.

Proprietary Technology and Plants China

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.



Отправить запрос, связаться с поставщиком

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


Send to other suppliers

Другие товары поставщика

Chemical Distillation Plant
Chemical Distillation Plant We offer complete package solutions for chemical /distillation design/distillation tailoring using all-component analysis, process simulation, and...
Methylal Refining Technology China
Methylal Refining Technology China Methylal Refining Technology Proprietary Technology and Plants Technical Features: Methaldehyde has excellent physical and chemical properties, ...
SL TEC Formaldehyde Plant
SL TEC Formaldehyde Plant SL TEC has close to ten years experience in based on silver contact process(or silver catalyzed process). A lower methanol consumption, higher for...
Methylal Refining Technology China
Methylal Refining Technology China Formaldehyde Plant SL TEC has close to ten years experience in formaldehyde production technology based on silver contact process(or silver ca...
Methylal Refining Technology China
Methylal Refining Technology China Concentrated Recycling Technology of Formaldehyde Proprietary Technology and Plants Technical Features: In the production of paraformaldehyde an...
Все товары поставщика

Похожие товары

Оборудование для перегонки джина водки на 500 л Медный дистиллятор
Оборудование для перегонки джина водки на 500 л Медный дистиллятор Продавец: Компания Shandong Degong Equipment Co., Ltd. Медь обеспечивает необходимую химическую реакцию, особенно при более низких стандартах, которая м...
Автоматическая установка смешивания и дозирования...
Автоматическая установка смешивания и дозирования... Продавец: 779326 WhatsApp 0086 134 2516 4065Скайп: дзылджы Предлагаем автоматический дозатор для дегазации, дозиро...
Автоматический дозатор клея для светодиодного модуля
Автоматический дозатор клея для светодиодного модуля Продавец: 779326 Введение: модульная автоматическая машина для впрыска клея, которую легко чистить, смесительная т...
GREENMAX Foam Densifier M-C50 Hot Sale
GREENMAX Foam Densifier M-C50 Hot Sale Продавец: INTCO Recycling GREENMAX foam densifier Mars series C50 is specialized in compacting EPS&EPE and could save l...
DT-i Servo Energy-saving Injection Molding Machine
DT-i Servo Energy-saving Injection Molding Machine Продавец: Tederic machinery Co., Ltd. Introduction DT-i servo energy saving injection molding machine is basically the High rigidity do...