Issue 1, 2016 - "New Technology for Catalytic Distillation of Methanol to Dimethyl Ether" passed the scientific and technological achievement appraisal

"New Technology of Catalytic Distillation of Methanol to Dimethyl Ether" passed the identification
of scientific and technological achievementsOn December 19, 2015, organized by the Department of Science and Technology of Hebei Province, well-known experts in the industry were invited to form an appraisal committee to identify
the scientific and technological achievements of the "new technology of catalytic rectification of methanol to dimethyl ether" completed by Kerry Environmental Protection Technology Co.
, Ltd.
Experts attending the meeting unanimously agreed that this technological achievement is the first in China, the overall technology has reached the international advanced level, and the demonstration role is remarkable
.

"New Technology for Catalytic Distillation of Methanol to Dimethyl Ether" introduces catalytic distillation technology into the production of dimethyl ether for the
first time.
Under the action of the catalytic distillation column, the etherification reaction and separation are carried out at the same time, constantly breaking the reaction equilibrium, so that the reaction is carried out in the direction of generating dimethyl ether, and finally the methanol conversion rate reaches more than
99.
5%.
The top of the tower obtains a dimethyl ether product with a purity of more than 99.
5%, which can meet the purity requirements of aerosol without further refining and separation
.
The maximum methanol content in the effluent water from the tower does not exceed 300ppm, which can be directly discharged to the sewage treatment plant without methanol recovery
.
This technology has the advantages of
short process flow, low reaction temperature, no gasification of raw materials, no side reactions, low energy consumption, and high product purity.
It solves the problems of long process flow of
traditional gas phase method, high reaction temperature, high energy consumption, methanol raw materials need to be gasified, low conversion rate, methanol needs to be refined and recovered, and dimethyl ether products need to be refined.

Compared with the traditional gas phase method, the energy consumption of this technology is about 60% of the gas phase method, the investment is about 90% of the gas phase method (calculated by 200,000 tons/year dimethyl ether plant), and the production and operating cost per ton of dimethyl ether is reduced by about 70 yuan, which can greatly improve the competitive advantage and profit margin
of dimethyl ether production enterprises.