Dimethyl Carbonate (DMC) Refining Technology
Dimethyl Carbonate (DMC) Refining Technology
Proprietary Technology and Plants
TechnologyIntrodction:
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 separated；In 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.
To a company 30,000 tons / year crude dimethyl carbonate (DMC) refined, for example.
Send product request
Other supplier products
 |
Proprietary Technology and Plants China | Acetate Series Technology Proprietary Technology and Plants TechnologyIntrodction Acetate as green solvents are widely used in all fields. Our c... |
 |
Urea Formaldehyde (UF) Glue Plant | Urea Formaldehyde (UF) Glue Plant Agent Technology and Plants Technology Introduction The Urea Formaldehyde (UF) technology provided by SL... |
 |
Formaldehyde Plant | Formaldehyde Plant SL TEC has close to ten years experience in formaldehyde production technology based on silver contact process(or silver ca... |
 |
Acetic Acid Plant | Acetic Acid Plant Proprietary Technology and Plants SL TEC has 15 years experience in acetic acid industry from technology R&D, plant design, e... |
 |
Methylal Refining Technology | Methylal Refining Technology Proprietary Technology and Plants Technical Features: Methaldehyde has excellent physical and chemical properties, tha... |
Same products
 |
SK3000 E-E BLADE KNEADER REACTOR | Seller: Jiangsu Sunkaier Industrial Technology Co., Ltd. | BLADE KNEADER REACTOR DESCRIPTION SK3000E-E Type Blade Intermeshing Kneader is a state-of-t... |
 |
Intelligent Mechanical Equipment | Seller: CITIC IC LUOYANG HEAVY MACHINERY CO., LTD | With the development of modern science and technology, industrial arm is a kind of high-tech auto... |
 |
Horizontal Centrifuge Machine | Seller: CITIC IC LUOYANG HEAVY MACHINERY CO., LTD | TWZ series horizontal vibratory centrifuge belongs to the centrifugal dewatering machine, the ser... |
 |
Wet Grid Ball Mill | Seller: CITIC IC LUOYANG HEAVY MACHINERY CO., LTD | Wet ball mill is a kind of energy-saving industrial grinding mill which adopts rolling bearings a... |
 |
Vertical Centrifuge | Seller: CITIC IC LUOYANG HEAVY MACHINERY CO., LTD | The vertical centrifuge machineis made up of the screen which diameter range from 700 to 1,000 mm... |
