Powder Activated Carbon for Flue Gas Treatment

March 12th, 2013

Powder Activated Carbon for Flue Gas Treatment

The incineration of wastes such as municipal waste(MSW),hazardous industrial waste, medical waste and sewerage sludge results in the formation of a flue gas containing a range of pollutants .Methods such as scrubbing, bag filters and electrostatic precipitators (ESP) are used to remove most of these pollutants. However these methods cannot remove dioxins and heavy metals such as mercury and cadmium

Activated carbon injection has been identified as the best available control technology (BACT) for the removal of above said range of pollutants. There are a variety of ways to use activated carbon in flue gas treatment. The best application method depends on the existing pollution abatement system.

Boyce standard range of powder activated carbon (PAC) proved to be an efficient solution for this purposes

Dry Abatement System

Dry powdered activated carbon (PAC) is injected into cooled (<200oC) flue gas. The carbon can be injected in numerous locations, including prior to or after acid gas scrubbing. The overall design is similar to the semi wet/semi-dry abatement equipment except the PAC is injected dry. The used PAC will be collected in the particulate matter (PM) collection device and safely disposed of with the ash. Typically, the usage of activated carbon ranges from 50 to 500 mg per Nm3 of flue gas. Carbon usage rate is highly dependent on the flue gas temperature, available contact time, and the particulate matter collection device.

Semi Dry/Semi Wet Abatement System

Powdered activated carbon (PAC) is injected (dry or as a slurry) into the humidified 130 to 160oC flue gas stream. Although the contact time in the gas stream is usually less than a second, the contact time is substantially increased by the residence time of the carbon in the particulate matter (PM) removal equipment. The PAC can typically be disposed of as non-hazardous with the other ash. PAC can be added alone or in conjunction with lime used for acid gas treatment. When mixed with lime, some of the PAC or PAC/lime can be re-circulated. Carbon usage rates range from 50 to 500 mg per Nm3.

Wet Scrubber Abatement System

For over 20 years, activated carbon has been used to remove mercury and dioxins from water. In a wet scrubber system, granular (GAC) or powdered (PAC) activated carbon is used to remove dioxins from the scrubber liquid. Powdered carbon is added to the re-circulating liquid, and a small slipstream of solution is continuously purged. Alternatively, the re-circulation scrubber solution is continuously pumped through a GAC bed and purified. When the GAC is saturated and no longer performs as required, the spent carbon must be disposed of in an environmentally safe method.

Powdered activated carbons supplied by Boyce, have been consistently meeting emission discharge standards of 0.5 µg/Nm3 mercury and 0.01 ng/Nm3 T. E .dioxins throughout Europe. In the United States, proposed incinerator facilities and existing incinerator facilities face stringent flue gas discharge requirements. Many facilities are currently using Boyce standard range of powdered carbons for mercury, dioxin, and VOC control. Some local governments and state environmental agencies have already established flue gas treatment objectives prior to upcoming federal regulations.

For flue gas treatment, removal of trace levels of mercury and dioxin is required. To accomplish the adsorption of these micro-pollutants, the adsorbent must have sufficient high energy adsorption sites. Boyce coconut-based powdered activated carbons have a high minimum Iodine Number (measurement of available surface area) with up to twice the amount of high energy adsorption sites when compared to other adsorbent carbons. With proper dosing levels, over 95 percent reduction in mercury/dioxin is achievable.

Recommended! For Exports of Activated Carbon

September 5th, 2012

Boyce Carbon, a leading manufacturers and exporters of Activated Carbon Granules from Coconut Shell Charcoal for variety of industrial application is highly recommended by Industry experts; with proven applications in water and air purification, control of pollutants, emissions & other systems, including recovery of precious metals. Companies buy activated carbon from Boyce carbon for more than 5 years comment that annually they save up to 20-30% as the pricing factor remains almost constant. Unlike other vendors where is a variable pricing depending of the season and availability of the coconut shell.

Activated Carbon for Purification-Boyce Carbon produces many types of activated carbon designed for specific liquid purification objectives. Applications typically include the adsorption of organic contaminants’ from potable water, wastewater, and process water as well as the purification of industrial raw ingredients and finished products. Activated carbon for Industrial separation.

Boyce Carbon holds expertise in providing fine quality Activated Carbon from coconut shell; this Activated Carbon is widely appreciated by our precious customers and most of our employees have richful export experience. We offer this Activated Carbon to our customers’ at most reasonable rates. With stringent quality control measures and constant upgrading, Boyce Carbon is of top notch superior-it

Please visit www.carbonsuppliers.com to learn more about the product range, applications and do not hesitate to call the product specialist to discuss your requirements.

Boyce PAC for waste water treatment.

June 21st, 2012

The incineration of wastes such as municipal waste(MSW),hazardous industrial waste, medical waste and sewerage sludge results in the formation of a flue gas containing a range of pollutants .Methods such as scrubbing, bag filters and electrostatic precipitators (ESP) are used to remove most of these pollutants. However these methods cannot remove dioxins and heavy metals such as mercury and cadmium

Activated carbon injection has been identified as the best available control technology (BACT) for the removal of above said range of pollutants. There are a variety of ways to use activated carbon in flue gas treatment. The best application method depends on the existing pollution abatement system.

Boyce standard range of powder activated carbon (PAC) proved to be an efficient solution for this purposes

Dry Abatement System

Dry powdered activated carbon (PAC) is injected into cooled (<200oC) flue gas. The carbon can be injected in numerous locations, including prior to or after acid gas scrubbing. The overall design is similar to the semi wet/semi-dry abatement equipment except the PAC is injected dry. The used PAC will be collected in the particulate matter (PM) collection device and safely disposed of with the ash. Typically, the usage of activated carbon ranges from 50 to 500 mg per Nm3 of flue gas. Carbon usage rate is highly dependent on the flue gas temperature, available contact time, and the particulate matter collection device.

Semi Dry/Semi Wet Abatement System
BOYCE Powdered activated carbon ROLE IN FULE GAS Treatment

Powdered activated carbon (PAC) is injected (dry or as a slurry) into the humidified 130 to 160oC flue gas stream. Although the contact time in the gas stream is usually less than a second, the contact time is substantially increased by the residence time of the carbon in the particulate matter (PM) removal equipment. The PAC can typically be disposed of as non-hazardous with the other ash. PAC can be added alone or in conjunction with lime used for acid gas treatment. When mixed with lime, some of the PAC or PAC/lime can be re-circulated. Carbon usage rates range from 50 to 500 mg per Nm3.

Wet Scrubber Abatement System

For over 20 years, activated carbon has been used to remove mercury and dioxins from water. In a wet scrubber system, granular (GAC) or powdered (PAC) activated carbon is used to remove dioxins from the scrubber liquid. Powdered carbon is added to the re-circulating liquid, and a small slipstream of solution is continuously purged. Alternatively, the re-circulation scrubber solution is continuously pumped through a GAC bed and purified. When the GAC is saturated and no longer performs as required, the spent carbon must be disposed of in an environmentally safe method.

Powdered activated carbons supplied by Boyce, have been consistently meeting emission discharge standards of 0.5 µg/Nm3 mercury and 0.01 ng/Nm3 T. E .dioxins throughout Europe. In the United States, proposed incinerator facilities and existing incinerator facilities face stringent flue gas discharge requirements. Many facilities are currently using Boyce standard range of powdered carbons for mercury, dioxin, and VOC control. Some local governments and state environmental agencies have already established flue gas treatment objectives prior to upcoming federal regulations.

For flue gas treatment, removal of trace levels of mercury and dioxin is required. To accomplish the adsorption of these micro-pollutants, the adsorbent must have sufficient high energy adsorption sites. Boyce coconut-based powdered activated carbons have a high minimum Iodine Number (measurement of available surface area) with up to twice the amount of high energy adsorption sites when compared to other adsorbent carbons. With proper dosing levels, over 95 percent reduction in mercury/dioxin is achievable.

Have more questions? Please give us a call for multiple sack or pallet orders +9198420 91301 (or) mail@boyce.in

BOYCE ACTIVATED CARBON SOLUTIONS FOR REFINING INDUSTRIES

April 6th, 2012

Boyce is uniquely equipped to supply a full range of activated carbon products

for variety of applications in refineries. We currently supply best quality of Granular and powder activated carbon for dozens of refineries, offering prompt, expert service. Regulatory compliance and the desire to improve product quality are key drivers for the use of activated carbon in Refineries.

The following discussion highlights these common applications and the solutions that Boyce Carbon can supply.

VOC Treatment & Control

Compliance with either the Benzene National Emission Standard for Hazardous Air Pollutants (NESHAP) regulation or local air emission regulations drives the need for VOC control at several emission points within the refinery, including:

v  Sewer pumps / junction boxes

v  Covered API separators and DAF units (level changes and diurnal breathing losses) Vacuum truck exhaust

v  Wastewater and storm water storage tanks (level changes and diurnal breathing losses)

Boyce activated carbon grades are particularly designed for these applications to be used in carbon adsorption units.

Vapor / Solvent Recovery

Activated carbon is often used in systems designed for the recovery of economically valuable products (gasoline vapors, benzene, and solvents) at refineries and terminals. Both pressure swing (for gasoline vapors) and temperature swing (for benzene and solvents) designs are commonly used. In this application, Boyce  special grades of activated carbons with high working capacities allows for effective adsorption and desorption through numerous cycles.

Hydrogen Sulfide Removal

The processing of sour crude oil often results in the formation of hydrogen sulfide (H2S) at various points in the refinery. Activated carbon is a common technology to control the nuisance odors and corrosion issues that often result from H2S. Boyce Specialty grades of carbon are often used to enhance the H2S capacity.

Amine Purification

Various alkanolamines are used by refineries to purify gas streams by removing acid gases such as CO2, H2S, and COS. During this process, the amine solution picks up hydrocarbons and organic acids. Activated carbon is utilized to treat a slipstream of the amine solution to prevent buildup of these hydrocarbons, and provides several benefits to the refinery:

v  Improved amine scrubbing efficiency

v  Reduced corrosion rate

v  Reduced operating costs

Decolorization

Boyce Activated carbon is the perfect choice to remove unwanted color or other organic impurities from desired end products such as jet fuel, kerosene, gasoline, lube oil, and other products.

Boyce Granular activated carbon is produced from coconut shell charcoal by the process of steam activation.  It gives the necessary hardness to avoid excessive losses due to attrition and handling. They present large internal surface of pore structure, ensuring high adsorption power in specific purposes and uses. They are used in fixed or moving beds as columns where the liquid or gas passes through and gets purified. They can be used in liquid or gas phase continuous adsorption process and offer unusual economy in cases where carbon regeneration is favorable.

Specification of our main grade of granular activated carbon for refining industry is given as under. We can customize the iodine value as well as the particle size according to your requirements.

Technical Specification of Boyce Granular Activated Carbon

Properties Specification
Raw Material Coconut shell charcoal
Appearance Black granules
Particle Size Any sieve size
4/8, 8/16, 8/30
8/50, etc
Bulk Density 0.55±0.05 gm/cc
Carbon Tetra Chloride Adsorption 30%
Iodine Adsorption mg/gm 500mg/gm±25
Total Surface Area (min) 500 m2/gm
Ball Pan Hardness No. 95
pH 9 to 10
Ash Content 5% Max
Moisture 5% Max

The Greener side of Carbon

March 3rd, 2012

Innovation for sustainability, Innovation is the act or process of inventing or introducing something new, and it is more than just research.
It is the need to be complemented by other elements in order to really become an innovation. Innovation or the ‘turning of good ideas into competitive solutions for society’ is an investment which only competitive industries are able to accommodate. Sustainability, is the ability to be maintained, and needs to be kept alive without being overlooked. The triangle of sustainability acts on three pillars; economic, social and environmental.
At Boyce Carbon we constantly fsund research projects that lead to innovation; innovation to increase the life of our resources like water and air. Innovation for sustainability works hand in hand, like the sun and water for the growth of nature. At Boyce, we constantly seek to explore the green side of carbon, to innovate for sustainability. Boyce Carbon is a company into sustainability based solutions and products. We work towards identifying and procuring carbon based products that are used across industry like food processing, pharmaceutical, water management and treatment, chemical and other industry applications.
We source from the optimal sources with a technical orientation on the product. The sourcing is done from the best sources networked across Asia, India, Srilanka, Philippines, Indonesia and Malaysia. Our comprehensive product range includes activated carbon and coconut shell based products.
COCONUT SHELL IS MORE EFFICIENT
Activated carbons produced from coconut shells typically have a tighter, more micro porous pore structure than their coal-based counterparts. This is due to the inherent pore structure of the raw material coconut shell as compared to raw material coals. This micro porosity lends itself towards certain applications where activated carbon is used. Also, coconut shell-based carbons tend to be harder, more resistant to abrasion, and lower in ash than similar grades of coal-based carbons. A quick comparison of standard specification measures on coconut shell carbons versus coal carbons is as follows: A complete range of premium virgin activated carbons made from high quality coconut shell charcoal, and Coconut Shell Charcoal in granular and powder forms are available in the form of Coconut Shell Cakes, Desiccated Coconut, Coconut shell charcoal Briquettes, Coconut Shell Charcoal Granules, Coconut Shell Charcoal Lumps, Coconut Shell Charcoal Powder, Coconut shell powder, Coconut shell chips, etc. The company has been certified for ASNI/NSF, Standard 61 and ISO 9001 and satisfies the requirements of the Food Chemical Codex.

Activated Carbon Adsorption and How it Works

February 4th, 2012

Activated Carbon Adsorption and How it Works
There are many uses of carbon adsorption technology in chemical industry. Adsorption is a process where a substance sticks to the surface of a solid to remove a soluble substance from water or air. Activated carbon is an adsorbent for removing pollutants and organics from both air and water. It is mainly used in the purification of drinking water, de-chlorination of ground water and polishing of treated effluent.
Activated carbon is a highly permeable filtering material with immense surface area. It has special connection to organic materials such as solvents used in printing inks and ordinary coatings. It can be made from materials such as coal, wood, and coconut shells because of the large size of their surfaces and the permeable nature of its pores. The bigger pores helped to longer the activated carbon functions. The material which has selected to be used as activated carbon must undergo an oxidation process. The dehydration and carbonization process involves the slow heating of the material at high temperatures. The carbon material is activated to density and hardness with the help of other oxidizing substances like chemicals or gases.
To determine the breaking point, the activated carbon undergoes a number of tests. Breaking point is important in chemical processes as it is the time when the activated carbon begins to lose its adsorbent quality. The point helps the user to know when the activated carbon needs to be replaced and reactivated. The process of adsorption has three stages. When the activated carbon placed in the water, the polluted substances started to stick to the carbon first. Then the polluted matter started to move into the big pores. Finally it adsorbed to the inner surface of the carbon.
How activated carbon works
Activated carbon has the filtering capacity that suck contaminants from water and gases like a sponge. The benefit of adsorption is that it does not create a chemical reaction between the carbon and the pollutants. But it may create some reaction during the filtering process due to the presence of oxygen and hydrogen atom sticking to the surface of carbon molecules.
The success of the activated carbon filtration method depends on the source and nature of the carbon source. The strength of the carbon source is important in filtering as the walls of the carbon pores must resist the pressures generated by the filtering process. In the filtering process, two mechanisms are working at the same time. Particles of contaminants are adhered to the pores of the activated carbon first. The available surface area and the pore size are important in the filtering process. In the second mechanism, the contaminants held against the walls of the pores by the force that exists in the molecules of like substances.
In simple words, activated carbon adsorption taken place to the exterior of the activated carbon first and then it move to the carbon pores and finally adsorb to the interior walls of the carbon. Adsorption capacity of the activated carbon decreases over time and it will need to be reactivated or replaced.

Why should you look at buying activated carbon and charcoal from India?

December 12th, 2011

Well, first of all one should know what activated carbon actually is.  It is an eco friendly  water treatment medium, which is found in granulated, block, or powdered form, produced by heating carbonaceous materials, such as coal, wood, or coconut shells, in the absence of air, creating a highly porous adsorbent material. Mostly coconut shells are used for this process.

Coming to why activated carbon from India. It is a well known fact that India is the largest producer and exporter of coconut and coconut based products in the world.  India is also the 3rd largest producer of coal.  Here in India, there are 12 major ports and 135 minor ports which are so well connected by a road system that it makes it very easy for transportation.

The Government of India considers the exports of coconut shell products so important that they have a department dedicated to promote export of coconut shell products.  Indian companies, a minimum of at least 100 manufacturers make activated carbon from coal and coconut shell as per specifications of the customer, exporting around 25000 tons of activated carbon and importing 1000 tons of activated carbon every year.  India also has an excellent relationship with countries like Sri Lanka, Malaysia, Indonesia and The Philippines etc, who are also major coconut producing countries.

Coming to the global scenario here, the demand for activated carbon is around 0.50 million tones per annum with a global growth rate of 2 to 3% per annum.  The wood based activated carbon accounts for about 40% of the total production in the world. Cost advantages can be obtained for both coconut shell and coal-based activated carbon.

Why Boyce Carbon?

  • Have a pristine network of sourcing to countries like India, Sri Lanka, The Philippines, Indonesia, Malaysia, and Vietnam etc.
  • Technical staff who can offer hands-on guidance in selecting the most appropriate system, operating conditions and carbon to meet your needs.
  • Supplies activated carbon to major municipal corporations like The Dubai Municipal Corporation, major Parma companies, waste water management and processing companies in the world.
  • Has stockiest in major locations in the Middle East and Europe
  • Can provide consistent delivery throughout the year.
  • Has 12 years of experience in supplying activated carbon and charcoal.

On your Activated carbon requirements please call +91 9842091301
Email: boycecarbon@gmail.com. Visit: www.carbonsuppliers.com

Boyce have learned to control adsorption capacity on gold recovery

December 8th, 2011

Use of chars in gold recovery began in the late 1800s. The 1930s and 1940s were periods of experimentation in North America, resulting in new or improved approaches for carbon use, both in pulverized and granular form. A major breakthrough was reported by J.B.Zadra of the US Bureau of Mines in 1950. He demonstrated that adsorbed gold and silver values could be desorbed from the carbon by low cost procedures, thereby allowing the carbon to be recovered and recycled to the adsorption circuit.

The carbon-in-pulp (CIP) process for gold recovery has now been in use for more than a decade. Based on this experience, carbon companies and metallurgists are addressing several of the early concepts about the selection and performance of the activated carbon, particularly as they relate to soluble gold loss and/or subsequent efforts to being soluble losses into line. Carbons used in South Africa and North America for gold recoveries are almost exclusively coconut shell-based granular types which are also very popular in Australia. Typically, 6×12 or 6×16 mesh coconut carbons are used in pulp, and 6 x 16 or 12 x 30 mesh are used in columns.

In 1970, the US Bureau of Mines investigated bituminous coal-base carbon for gold adsorption. However it was found that coconut carbons would stand up better in a pulp circuit than other base material carbons. Since coconut carbon was available and worked well, granular carbons from other base materials receives minimal importance.

Selection of activated carbon for gold recovery service includes consideration of:

(a)Presence of other substances that may affect or interfere with loading of carbon (b)

Adsorption capacity(c) Rate of adsorption and desorption (d) Residual gold on stripped carbon.

(e)Resistance to abrasion (f) Reproducibility of test methods (g) Consistency of product for gold recovery service.

Boyce have learned to control adsorption capacity for gold cyanide, providing carbon possessing consistent gold absorption properties. Some users believe that carbons with high adsorption capacity for gold will not strip to low levels. Plant performance is the best proof of how well high capacity/fast loading carbon will strip. Boyce activated carbon is routinely stripped to 20-30 gm/ton in several operating plants. Thus Boyce activated carbon meets all the requirements for gold recovery services.

The product is applied in CIP process and heap leaching by gold extraction and the precious metals extraction, separation of metallurgical industry. It is used the high-quality coconut shell from Hainan as raw material. It is refined by the high temperature steam activation. It has the advantages such as developed pore structure, high specific, surface area, strong adsorption capability, high wear-resistance, and high decolorizing purity, renew ability etc

Boyce would like to prove how to increase your gold yield, and consequently your profits, using a granular activated carbon, or an extruded activated carbon. The granular activated carbon are premium coconut shell-based carbons that are among the best available and have been specially pre-treated to reduce platelet content and initial wear of the carbon, which gives you more carbon for your money. The extruded activated carbon was specifically developed by Boyce to reduce the amount of gold lost during the gold recovery process. It improves plant performance, significantly reducing gold losses to the tailings.

Boyce activated carbon is known for its features of hardness, free of platelets, large pore volume, rapid adsorption and max gold loading, this range exhibits the following advantages: • Low attrition values • Large pores value with selected pore size • Suitable for “carbon in leach”(CIL) and “carbon in pulp” (CIP) process • Available in granular form

Following are the technicalities of this range:

Grade CTC Iodine Adsorption Apparent Density Hardness pH Ash Moisture Mesh Size
BOYCEGAC 60 1150mgm/gm
Min
0.48gm/cc
Min
98% Min 9-11 3%
Max
5 Max 8 x 16
6 x 12
BOYCE GAC 55 1050mgm/gm
Min
0.5gm/cc
Min
99% Min 9-11 3%
Max
5 Max

Boyce superior granular coconut shell based carbon offers:

• Low initial loses due to pre-wear and reduced platelet content

• High gold loading capacity

• High gold loading kinetics, reducing losses by pre-robbers

• Excellent gold release during stripping

• Excellent screen ability, low pegging

Powder Activated Carbon for Flue Gas Treatment

December 13th, 2010

The incineration of wastes such as municipal waste(MSW),hazardous industrial waste, medical waste and sewerage sludge results in the formation of a flue gas containing a range of pollutants .Methods such as scrubbing, bag filters and electrostatic precipitators (ESP) are used to remove most of these pollutants. However these methods cannot remove dioxins and heavy metals such as mercury and cadmium

Activated carbon injection has been identified as the best available control technology (BACT) for the removal of above said range of pollutants. There are a variety of ways to use activated carbon in flue gas treatment. The best application method depends on the existing pollution abatement system.

Boyce standard range of powder activated carbon (PAC) proved to be an efficient solution for this purposes

Dry Abatement System

Dry powdered activated carbon (PAC) is injected into cooled (<200oC) flue gas. The carbon can be injected in numerous locations, including prior to or after acid gas scrubbing. The overall design is similar to the semi wet/semi-dry abatement equipment except the PAC is injected dry. The used PAC will be collected in the particulate matter (PM) collection device and safely disposed of with the ash. Typically, the usage of activated carbon ranges from 50 to 500 mg per Nm3 of flue gas. Carbon usage rate is highly dependent on the flue gas temperature, available contact time, and the particulate matter collection device.

Semi Dry/Semi Wet Abatement System

Powdered activated carbon (PAC) is injected (dry or as a slurry) into the humidified 130 to 160oC flue gas stream. Although the contact time in the gas stream is usually less than a second, the contact time is substantially increased by the residence time of the carbon in the particulate matter (PM) removal equipment. The PAC can typically be disposed of as non-hazardous with the other ash. PAC can be added alone or in conjunction with lime used for acid gas treatment. When mixed with lime, some of the PAC or PAC/lime can be re-circulated. Carbon usage rates range from 50 to 500 mg per Nm3.

Wet Scrubber Abatement System

For over 20 years, activated carbon has been used to remove mercury and dioxins from water. In a wet scrubber system, granular (GAC) or powdered (PAC) activated carbon is used to remove dioxins from the scrubber liquid. Powdered carbon is added to the re-circulating liquid, and a small slipstream of solution is continuously purged. Alternatively, the re-circulation scrubber solution is continuously pumped through a GAC bed and purified. When the GAC is saturated and no longer performs as required, the spent carbon must be disposed of in an environmentally safe method.

Powdered activated carbons supplied by Boyce, have been consistently meeting emission discharge standards of 0.5 µg/Nm3 mercury and 0.01 ng/Nm3 T. E .dioxins throughout Europe. In the United States, proposed incinerator facilities and existing incinerator facilities face stringent flue gas discharge requirements. Many facilities are currently using Boyce standard range of powdered carbons for mercury, dioxin, and VOC control. Some local governments and state environmental agencies have already established flue gas treatment objectives prior to upcoming federal regulations.

For flue gas treatment, removal of trace levels of mercury and dioxin is required. To accomplish the adsorption of these micro-pollutants, the adsorbent must have sufficient high energy adsorption sites. Boyce coconut-based powdered activated carbons have a high minimum Iodine Number (measurement of available surface area) with up to twice the amount of high energy adsorption sites when compared to other adsorbent carbons. With proper dosing levels, over 95 percent reduction in mercury/dioxin is achievable.

Have more questions? Please give us a call for multiple sack or pallet orders   +9198420 91301 (or) mail@boyce.in.

BOYCE ACTIVATED CARBON SOLUTIONS FOR Decolonization & Amine Purification

November 16th, 2010

REFINING INDUSTRIES

Boyce is uniquely equipped to supply a full range of activated carbon products for variety of applications in refineries. We currently supply best quality of Granular and powder activated carbon for dozens of refineries, offering prompt, expert service. Regulatory compliance and the desire to improve product quality are key drivers for the use of activated carbon in Refineries.

The following discussion highlights these common applications and the solutions that Boyce Carbon can supply.

VOC Treatment & Control

Compliance with either the Benzene National Emission Standard for Hazardous Air Pollutants (NESHAP) regulation or local air emission regulations drives the need for VOC control at several emission points within the refinery, including:

v     Sewer pumps / junction boxes

v     Covered API separators and DAF units (level changes and diurnal breathing losses)        Vacuum truck exhaust

v     Wastewater and storm water storage tanks (level changes and diurnal breathing losses)

Boyce activated carbon grades are particularly designed for these applications to be used in carbon adsorption units.

Vapor / Solvent Recovery

Activated carbon is often used in systems designed for the recovery of economically valuable products (gasoline vapors, benzene, and solvents) at refineries and terminals. Both pressure swing (for gasoline vapors) and temperature swing (for benzene and solvents) designs are commonly used. In this application, Boyce  special grades of activated carbons with high working capacities allows for effective adsorption and desorption through numerous cycles.

Hydrogen Sulfide Removal

The processing of sour crude oil often results in the formation of hydrogen sulfide (H2S) at various points in the refinery. Activated carbon is a common technology to control the nuisance odors and corrosion issues that often result from H2S. Boyce Specialty grades of carbon are often used to enhance the H2S capacity.

Amine Purification

Various alkanolamines are used by refineries to purify gas streams by removing acid gases such as CO2, H2S, and COS. During this process, the amine solution picks up hydrocarbons and organic acids. Activated carbon is utilized to treat a slipstream of the amine solution to prevent buildup of these hydrocarbons, and provides several benefits to the refinery:

v       Improved amine scrubbing efficiency

v       Reduced corrosion rate

v       Reduced operating costs

Decolorization

Boyce Activated carbon is the perfect choice to remove unwanted color or other organic impurities from desired end products such as jet fuel, kerosene, gasoline, lube oil, and other products.

Boyce Granular activated carbon is produced from coconut shell charcoal by the process of steam activation.  It gives the necessary hardness to avoid excessive losses due to attrition and handling. They present large internal surface of pore structure, ensuring high adsorption power in specific purposes and uses. They are used in fixed or moving beds as columns where the liquid or gas passes through and gets purified. They can be used in liquid or gas phase continuous adsorption process and offer unusual economy in cases where carbon regeneration is favorable.

Specification of our main grade of granular activated carbon for refining industry is given as under. We can customize the iodine value as well as the particle size according to your requirements.

Technical Specification of Boyce Granular Activated Carbon

Properties Specification
Raw Material Coconut shell charcoal
Appearance Black granules
Particle Size Any sieve size
4/8, 8/16, 8/30
8/50, etc
Bulk Density 0.55±0.05 gm/cc
Carbon Tetra Chloride Adsorption 30%
Iodine Adsorption mg/gm 500mg/gm±25
Total Surface Area (min) 500 m2/gm
Ball Pan Hardness No. 95
pH 9 to 10
Ash Content 5% Max
Moisture 5% Max

For more details Please visit www.carbonsuppliers.com . Please feel free to call us on quires +91 9842091301 or mail@boyce.in.