Dimethyl Carbonate (DMC) Refining Technology

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 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.




Отправить запрос

Кому: Hubei Sanli Fengxiang Technology Co., Ltd
Ваш E-mail:
Текст письма:


Send to other suppliers

Другие товары поставщика

Formic acid production technology
Formic acid production technology Formic acid production technology Agent Technology and Plants  Technical Features: Methanol Carbonylation Synthesis of Formic Acid from M...
Crude methanol refinery technology
Crude methanol refinery technology Crude methanol refinery technology Proprietary Technology and Plants Technology Introdction: Crude methanol rectification process includes sin...
MMA Plant
MMA Plant MMA Plant Agent Technology and Plants  Technology Introduction: There are three prevailing processes for MMA, or methyl methacrylate prod...
Acetate Series Technology
Acetate Series Technology Acetate Series Technology Technology Introdction Acetate as green solvents are widely used in all fields. Our company adopts continuous esteri...
Dimethyl Carbonate (DMC) Refining Technology
Dimethyl Carbonate (DMC) Refining Technology Dimethyl Carbonate (DMC) Refining Technology Proprietary Technology and Plants Technology Introdction: Dimethyl carbonate (DMC) is an importan...
Все товары поставщика

Похожие товары

AMG350C-04D SMC water separator from China SMC
AMG350C-04D SMC water separator from China SMC Продавец: Nanjing Meily Mechanical and Electrical Equipment Co.,Ltd. contact: Helen Ye Tex: +86 25 52328744...
IHF Series Chemical Transfer Centrifugal Pump
IHF Series Chemical Transfer Centrifugal Pump Продавец: Anhui Prestolite Chemical Pump Co.,ltd IHF series chemical transfer Centrifugal Pumps :★Operating temperature:-20oC ~ 150 oC★ Pump Flow:...
Sand dryer/ River sand drying plant/Mingzheng machinery
Sand dryer/ River sand drying plant/Mingzheng machinery Продавец: Xingyang City Ming Zheng Machinery Equipment Co., Ltd.      Ming Zheng machinery is a professional sand dryer factory.You can find river ...
U Tube Heat Exchanger
U Tube Heat Exchanger Продавец: DFC pressure vessel manufacturer Co.Ltd U Tube Heat Exchanger heat exchanger As a professional manufacturer of quality Pressure Vessel,...
BEU Heat Exchanger
BEU Heat Exchanger Продавец: DFC pressure vessel manufacturer Co.Ltd BEU Heat Exchanger   heat exchanger As a professional manufacturer of quality Pressure Ve...