Dimethyl Carbonate (DMC) Refining Technology
Proprietary Technology and Plants
Technology Introdction:
Dimethyl carbonate (DMC) is an important organic chemical intermediates, it widely used in carbonylation, methylation, methoxylation and carbonyl methylation and other organic synthesis reaction. Because DMC is non-toxic, it can replace the highly toxic phosgene, methyl chloroformate, dimethyl sulfate as a methylating agent or carbonylation agent used to improve the safety of production operations and reduce environmental pollution. As a solvent, DMC can replace freon, trichloroethane, trichlorethylene, benzene, xylene and so on for paint coatings, cleaning solvents. As a gasoline additive, DMC can improve its octane number and oxygen content, thereby enhancing its antiknock. In addition, DMC can be used as detergent, surfactant and softener additives.
In the process of oxidizing carbonylation of methanol to dimethyl carbonate, the reaction solution contains a large amount of unreacted raw materials and by-products (such as formaldehyde, trioxaldehyde and the like) in addition to DMC, and further separation is required to obtain DMC products.
As the raw materials containing formaldehyde, trioxaldehyde and other impurities, these impurities on the follow-up distillation process and equipment selection has a significant impact, so the need for pre-treatment device for pre-removal, removal of formaldehyde, trimethyl formaldehyde after the material into the follow-up Of the distillation system. Removal of formaldehyde and paraformaldehyde materials due to methanol and DMC forming azeotrope, ordinary distillation can not get a pure product, therefore, it usually using two-step separation combined?The first step is the initial distillation stage, the use of azeotropic distillation way, in the packed column to obtain methanol-DMC azeotrope, and other products separatedIn the second step, the DMC was obtained by the effective separation method. The main methods were low temperature crystallization, extraction distillation, azeotropic distillation and pressurized distillation. The purity was higher than 99.9 % High purity DMC products.
Dimethyl Carbonate (DMC) Refining Technology Proprietary Technology and Plants Technology Introdction: Dimethyl carbonate (DMC) is an important organic chemical intermediates, it widely used in carbonylation, methylation, methoxylation and carbonyl methylation and other organic synthesis reaction. Because DMC is non-toxic, it can replace the highly toxic phosgene, methyl chloroformate, dimethyl sulfate as a methylating agent or carbonylation agent used to improve the safety of production operations and reduce environmental pollution. As a solvent, DMC can replace freon, trichloroethane, trichlorethylene, benzene, xylene and so on for paint coatings, cleaning solvents. As a gasoline additive, DMC can improve its octane number and oxygen content, thereby enhancing its antiknock. In addition, DMC can be used as detergent, surfactant and softener additives. In the process of oxidizing carbonylation of methanol to dimethyl carbonate, the reaction solution contains a large amount of unreacted raw materials and by-products (such as formaldehyde, trioxaldehyde and the like) in addition to DMC, and further separation is required to obtain DMC products. As the raw materials containing formaldehyde, trioxaldehyde and other impurities, these impurities on the follow-up distillation process and equipment selection has a significant impact, so the need for pre-treatment device for pre-removal, removal of formaldehyde, trimethyl formaldehyde after the material into the follow-up Of the distillation system. Removal of formaldehyde and paraformaldehyde materials due to methanol and DMC forming azeotrope, ordinary distillation can not get a pure product, therefore, it usually using two-step separation combinedï¼?The first step is the initial distillation stage, the use of azeotropic distillation way, in the packed column to obtain methanol-DMC azeotrope, and other products separatedïIn the second step, the DMC was obtained by the effective separation method. The main methods were low temperature crystallization, extraction distillation, azeotropic distillation and pressurized distillation. The purity was higher than 99.9 % High purity DMC products.
Material: high carbon spring steel, spring steel, stainless steel, alloy steel Compression Spring, Extension Spring : Wire Diameter: 0.2-40.0mm Torsion spring wire diameter :0.2-35mm Surface Finish: black , Zinc, Nickel, silver, golden, tin, powder coating, shot pin Applications: Automotive, medical device, agricultural machinery ,electronics, toy, electric power distribution. Extension spring hook include Germany hook, British hook, Side hook We can customize special design of springs based on your requirement.
Product's name: Wood Charcoal Keywords: Flat cube charcoal,Flat cube burning,Lump charcoal , Lump Shisha Charcoal, Silver Charcoal. Specification as following: Specification: Grade A Material (Composition) 90% bamboo charcoal & 10% pure nature bonding Moisture Content less than 6% Fixed Carbon More than 85% Ash 4% Heat value 7000J-8000J Volatile Matter 2% Hardness 90% Temperature (Burning) 700-880°C Burning Time 4-5 hours Others feature smokeless,odourless,innocuity, no bursting it is an environment-friendly products , no any chemicals Size: hexagon shape square diameter outer diameter Æ 40mm 40x40mm inner diameter Æ 10mm Æ 10mm Length 18-25cm 18-25cm Weight (Average) 285g-295/pc 285-295g/pc
Specifications 1.odorless 2.low VOC 3.antimicrobial 4. mildew resistant 5.environmentally friendly 6.waterproof 7.Scrub resistance Description It is an enhanced mildew proof product adopting nano-scale Ag+ antimicrobial and mildew proof technology, integrating odorless formula, with fresh product smell, smooth paint film, durable and beautiful paint.As an affordable and environmentally friendly product with excellent decorative performance, it is characterized by fresh smell, environmental health, strong covering power, large painting area, convenient constructionapplication, short constructionapplication period, etc. Specification Data Solvent: Water Pigment: Non-lead pigment Theoretical Solids By Volume: more than 50% Theoretical Coverage: Theoretically 1 litre of this product covers 12 sqm in 1 coat Coverage varies considerably depending on application methods and surface roughness and porosity. Shelf Life: Minimum 12 months at 77F(25C) unopened and store in cool and dry places. Recommended Film Thickness: Wet: 80 micron Dry: 30 micron Dry Time: At 77F (25C) and 50% R.H. to recoat Touch Dry: 1 hours Recoat : 2-3 hours Application: Brush, Roll, conventional spray or Airless Spray. Thinner: Thin up 15% depend on different application methods & temperature. Do not over thin by adding more than 30% water. Brush or Roller: For sealing new or bare surfaces thin with up to 1 part of clean water to 5-10 parts of paint(10%-20%) Conventional Spray: Add up to 1 part clean water to 5 parts paint(20%) Airless spray: do not thin Clean-up: Clean up equipment with water Typical painting system Substrate System All kinds of Wall surfaces 1.Alkali Resistance Primer (1 coat) 2.Emulsion Wall Paint (2 coats)
Supplier: Herbs, extracts, oils, herbal tea, indian black tea, cosmetics & beauty products, herbal pesticide, aromatic chemicals use for manufacturing aromatic products, detergents, soaps, cosmetic products, household products, colour pigments, calcium carbonate, herbal extracts, powders, herbs, chemical organic & inorganic and derivatives, fluorescent colour pigments for plastics, ink, papers neon sign, food colours & flavours, herbal pesticides, enzyme
Services: Manufacturer & exporter
Carbon Blocks used in furnace having a great alternative against Petcoke. As it has high melting power and cheap as compared to Petcoke. Here in India, we are a supplier and exporters of Carbon blocks. Parameters- Total moisture (Mt): 1.80% Ash(Aad): 13.07 Volatile matter (Vad): 13.94 Fixed Carbon (FCad): 77.88 Sulfur (S): 3.10
Grade: 1. Carbon Black PL330J 2. Carbon Black PL330C 3. Carbon Black PL330C 4. Carbon Black PL550C 5. Carbon Black PL550B 6. Carbon Black PL550C 7. PL660B Beads 8. Carbon Black P330 9. Carbon Black P550 10. PL772B Beads Purity: 1.OAN (ml/100 gm) >90 2.OAN (ml/100 gm) >90 3.OAN (ml/100 gm) >95 4.OAN (ml/100 gm) >100 5.OAN (ml/100 gm) >100 6.OAN (ml/100 gm) >100 7.DBP No (OAN) (cc/100 gm) >100 8.DBP No (OAN) (cc/100 gm) >100 9.DBP No (OAN) (cc/100 gm) >105 10.DBP No (OAN) (cc/100 gm) >90 Actual price will be provided after your enquire.
We are exporter of Activated Carbon. Activated carbon made from raw organic material such as coconut shell. The raw material of activated carbon pulverized and sieved into appropriate and uniform particle sizes. Carbon has been used as an adsorbent for centuries. Activated carbon is a particularly good adsorbent due to its high surface area to volume ratio.
We are supplier and exporter of Activated Carbon. Granular Activated Carbon Products range from the size 0.2mm to 3.75mm. Granular Activated Carbon has relatively larger particles size compared to powdered activated carbon and consequently, presents a smaller external surface. Powdered Activated Carbon Powdered Activated Carbons are small activated carbon particles, with a size that is predominantly less than 0.075 mm. Activated Carbon is used worldwide in purification of Water, Air, etc. We are producers Dura specie of Palm Kernel Shells Powder & Pellets Activated Carbon, with over 1600 Iodine level and equally high level of Harness.
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