Activated Carbon Powder (Steam Activated)

Transcription

1 Activated Carbon Powder (Steam Activated) Our Powder activated carbon is manufactured using pure pine wood which is an excellent base for manufacturing activated carbons with good adsorption power. The steam activated process is done by activating the charcoal in a rotary kiln by heating at high temperatures by steam. The activated carbon that comes out from the kiln is called unwashed activated carbon. These unwashed activated carbon has higher ash and iron content. This is reduced by washing the unwashed activated carbon with acid (HCl / H 2 SO 4 ) and purified water. This results in reduction of ash content to as low as 1% and iron as low as 50 ppm. The gradation of different qualities of activated carbon is done on the basis of Methylene blue value and iodine value. The iodine value is a better test as the particle size of iodine molecule is small enough to penetrate the smallest of pores. We can relate the iodine value of activated carbon directly to its surface area because of the above fact. Given below are our standard technical specifications of our different washed and unwashed grades of steam activated carbon. You are requested to select your grade and let us know of your requirement. Technical Specification of Activated Carbon (Unwashed grade) Properties Grade DC-15 DC-21 DC-31 DC-41 Methylene Blue Value min (mg/gm) Iodine Value min (mg/gm) Moisture (%) Max ph Ash (%) Max Ironppm Max Acid Soluble Matter (%) Water Soluble Matter (%) Particle Size through 200 mesh (%) Technical Specification of activated carbon (Acid washed) Properties Grade DCW-21 DCW-31 DCW-41 DCW-51 Methylene Blue Value min (mg/gm) Iodine value min (mg/gm) Moisture (%) Max Ash (%)Max Ironppm Max ph Chlorides ppm Max Sulphate ppm Max Acid Soluble Matter (%) Water Soluble Matter (%) Partical Size Through 200 Mesh (%)

2 Applications of Steam Activated Carbon Powder : It is mainly used in the decolorisation of active pharmaceutical ingredients. Decolorisation of plasticizers, drugs intermediates, dyes and dye intermediates, food colors, glycerine and fine chemicals. Used also as a drug in capsules and tablet forms for stomach ailments and applications. Used to purify intravenous fluid and injections. Used by the pesticides and insecticides industry for decolorisation. Activated Carbon Powder (Chemically Activated) This form of activated carbons are manufactured from wood saw dust. The porous structure of chemically activated carbons have high developed macroporosity (large size pores) and to a much smaller extent mesoporosity. The chemically activated carbon made from saw dust produces activated carbon with an acidic ph. Manufacturing process: The finely pulverized saw dust is saturated with concentrated phosphoric acid. It is than taken out dried and heated to 600 C in a rotary kiln. The activation takes place as the phosphoric acid evaporates from the saw dust. These leads to the opening of the pores which increases the surface area of the carbon. Products obtained by fermentation processes can be purified using chemically activated carbons. It is specifically used in the purification of starch, glucose and sugar Our standard specification of chemically activated carbons are as under. Technical Specification of Chemically Activated Carbon (Phosphoric Acid Activation) Properties Grades DCP-15 DCP-20 DCP-40 Methylene Blue Value min mg/gm ph Ash (%) Max Moisture (%) Max Acid Soluble Matter (%) Kmn o 4 Adsorption Particle Size (200 Mesh) (%) Applications of Chemically Activated Carbon Powder : It is used in decolorisation of liquids having impurities with larger pore size i.e. Sugar Solutions, Glucose, Dextrose, Lactose & other starch sugar solution. Used in decolorisation of vegetable oils and fats and herbal products

3 Activated Carbon Granular Granular activated carbons are made from rigid raw materials, giving 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 continous adsorption process and offer unusual economy in cases where carbon regeneration is favorable. In liquid phase applications they remove colloids and organic substances that give undesirable odors, colors and taste to the products. They are efficiently used for water dechlorination in processes which require super chlorination as well as the removal of organic substances from the water. In vapor phase application they participate in the solvent recovery, adsorption of colors, purification of carbon dioxide and catalyst support. They are also used to reduce the COD and BOD in effluent waste water. Granular activated carbon is produced from coconut shell charcoal by the process of steam activation. The coconut shell charcoal is fed into the rotary kiln and activated by steam at high temperatures resulting in the evaporation of impurities and opening up of pores on the surface. The resultant big particles are then crushed and sieved to get the desired particle size. Our main grades of granular activated carbon are given as under. We can customize the iodine value as well as the particle size according to your requirements. Technical Specification of Granular Activated Carbon Properties Grades GL-50 GL-70 GL-100 Raw Material Coconut shell charcoal Appearance Black granules Black granules Black granules Particle Size Any sieve size Any sieve size Any sieve size 4/8, 8/16, 8/30 4/8, 8/16, 8/30 4/8, 8/16, 8/30 8/50, etc 8/50, etc 8/50, etc Bulk Density 0.55±0.05 gm/cc 0.55±0.05 gm/cc 0.55±0.05 gm/cc Carbon Tetra Chloride Adsorption 30% 45% 60% Iodine Adsorption mg/gm 500mg/gm±25 750mg/gm± mg/gm±50 Total Surface Area (min) 500 m 2 /gm 750 m 2 /gm 1000 m 2 /gm Ball Pan Hardness No ph 9 to 10 9 to 10 9 to 10 Ash Content 5% Max 5% Max 5% Max Moisture 5% Max 5% Max 5% Max Applications of Granular Activated Carbon : It is used in effluent treatment plant to reduce BOD / COD/ color from industrial waste water. It removes chlorine and organic impurities from drinking water in the last stage filtration in our common house hold filters. It is used as adsorbent of poisonous gases in gas masks for industrial as well as defence purposes. To adsorb moisture from compressed air in paint shops. To dechlorinate waters in swimming pool and soft drink plant. To remove oil from hot condensate. Top quality granular activated carbons are used in the process of gold recovery in which the molten ore is passed over a bed of activated carbon where the gold is adsorbed on the carbon and recovered. Used to manufacture catalyst.. Removal of dissolved organic impurities.. Breweries and distilleries. Catalyst carrier

4 Activated Carbon Cylindrical Pellet This type of activated carbon is used for vapour phase aapplications mainly solvent recovery. It is also used for making activated carbon caatalyst due to its large surface area and hardness. Properties PL - 60 PL - 70 PL - 90 Iodine Value (mg /gm ) min CTC (%) min Moisture (%) Ash Content Hardness Particle Diameeter 4 mm 4 mm 4 mm Applications of Cylindrical Pellets Activated Carbon: Air stripper off-gas. It purifies carbon dioxide. Used to purify nitrogen in various plastics manufacturing process. Used as a catalyst support and protector. Used in gasoline vapor recovery. Used in recovery of various useful solvents which are emitted out as waste gases in various industries. In gassifiers to purify the gases. To remove odors from the air and gases. GRAPHENE Graphite oxide, formerly called graphitic oxide or graphitic acid, is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers. The maximally oxidized bulk product is a yellow solid with C:O ratio between 2.1 and 2.9, that retains the layer structure of graphite but with a much larger and irregular spacing. Single-layer graphene oxide (GO) powder is produced from single-layer GO aqueous solutions with the same concentration. The GO aqueous solution, as shown in the ditigal image Figure 1, is very stable (more than 6 month). The GO solution is fabricated by sonicating the graphite oxide in water. The graphite oxide is produced through optimized Staudenmair method. The GO powder is extracted from this solution by removing water. Compared to the GO synthesized through Hummer method, which is generally employed by most GO providers, our product, DING-GO1, has much more single-layer sheets. Most importantly, our GO powder is solid product, and it is monodispersed according to its FESEM image Figure 2 and TEM image Figure 3. It can be easily mixed with other materials. DING-GO1 can be easily re-dispersed into singlelayered graphene oxide sheets in aqeous solutions.

5 Light Weight Carbon Fiber Fabrics

6 LIGHT WEIGHT CARBON FIBER FABRICS BIDIRECTIONAL CARBON FABRIC supplies the lightest highest quality carbon fabrics available. All of our 1K light weight fabrics use a unique flattened tow that results in a thinner fabric which requires less epoxy resin, producing parts that are lighter. Ultra light weight carbon fabrics start at 2 oz. per square yd. and only 0.004" thickness, with many ultra light fabrics to choose from. We also have many of the medium weight carbon fiber fabrics. All of our carbon fabrics are sold by the foot for small projects or by the full roll for larger projects. Carbon fiber fabric is the best choice if the part must have very high strength, high stiffness at the lowest possible weight. We recommend that you use a high performance laminating epoxy system for all carbon fiber parts. Both Pro-Set and MGS Epoxy systems are excellent for use with high performance fabrics. UNIDIRECTIONAL CARBON FABRIC Unidirectional Carbon Fabric is available in a wide range of weights, widths and binders. Starting with an ultra light weight of only 1.5 oz./sq. yd. and a thickness of only inch up to 8.85 oz./sq. yd. Web binder uni carbon is available in 1, 2 and 12 inch widths. This material can be cut into any width or shape and is easy to handle. High Modulus fiber unidirectional fabric is also available. Carbon Tow works well for many small parts that need unidirectional strength. We stock Carbon Tow in 1k, 3k, 6k, 12k, and 50k bundle sizes in short lengths and full spools.

7 CARBON FIBER TISSUE/VEIL Carbon Fiber Veil also known as Carbon Tissue is an ultra light non woven carbon fiber with random fiber orientation. This material is compatible with all epoxy systems and is used for a smooth surface on carbon fiber parts. It is also useful to provide some stiffness to extremely light weight parts. CST Carbon Fiber Veil is available in 0.2 oz./sq. yd. and 0.5 oz./sq. yd. weights. OTHER AVAILABLE LIGHT WEIGHT FABRICS LIGHT WEIGHT ARAMID (KEVLAR ) FABRIC Aramid Fabric (Kevlar ) is an excellent choice for structures where extreme light weight, toughness and strength are goals. Kevlar is a registered trademark of DuPont corporation. The generic form of the fiber is aramid. We use the generic product to help reduce the costs and offer a wider range of products. Ultra light weight Aramid Fabrics are available down to 1 oz./sq. yd. in weight. provides Aramid material in many forms: Ultra light bidirectional fabrics Bias cut short lengths of bidirectional fabric Unidirectional Fabric Tapes Braided sleeves Yarns and threads

8 LIGHT WEIGHT FIBERGLASS FABRIC Fiberglass cloth is a very cost effective composite fabric. Fiberglass Fabric is available in many forms: Ultra light bidirectional fabrics thru medium weights Barracuda Fiberglass cloth Unidirectional Fabric Tapes Braided sleeves Veil or tissue Chopped Strand Mat