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New energy-saving process for preparing MTG (or DME) with rough (refined) methanol

A new process, methanol technology, applied in the field of crude methanol to MTG energy-saving new process, can solve the problems of repeated investment, high energy consumption, etc., achieve low energy consumption, reduce engineering investment, and realize the effect of comprehensive utilization of heat energy

Inactive Publication Date: 2010-05-12
王揽月
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of large energy consumption in the production of dimethyl ether from methanol, gasoline from methanol or gasoline from dimethyl ether, each unit of the device is an independent single system, and repeated investment in the project; the invention provides a method that can be directly produced by methanol A new energy-saving process for the direct production of DME from gasoline or methanol, and a low-energy-consumption process that combines parts of the two sets of equipment to achieve comprehensive utilization of heat energy, reduce engineering investment, and facilitate product structure adjustment

Method used

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  • New energy-saving process for preparing MTG (or DME) with rough (refined) methanol
  • New energy-saving process for preparing MTG (or DME) with rough (refined) methanol
  • New energy-saving process for preparing MTG (or DME) with rough (refined) methanol

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Embodiment Construction

[0027] specific implementation plan

[0028] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0029] Option 1, a new process for methanol to produce dimethyl ether and dimethyl ether to regenerate gasoline, such as figure 1 As shown, has the following process:

[0030] a. Methanol transportation and waste heat recovery process;

[0031] b. Methanol separation and concentration process;

[0032] c, methanol dehydration reaction process;

[0033] d. DME (or methanol) conversion process to MTG;

[0034] e. Product distillation and separation process;

[0035] f. Exhaust gas washing and recovery process.

[0036] In step a of the process of the present invention, after the methanol is pressurized by the raw material pump 17, the waste heat heater 7, the second-stage waste heat heater 8, and the third-stage waste heat heater 9 are respectively used to recover residual liquid, steam condensed water and reacted ga...

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Abstract

The invention relates to a new energy-saving process for preparing MTG (or DME) with rough (refined) methanol. The process comprises the following steps: a. conveying methanol and recovering afterheat; b. separating and thick extracting the methanol; c. dehydrating and reacting the methanol; d. rectifying and separating the product; and e. washing and recovering tail gas. By organically combining partial devices of the two sets of apparatuses, the new energy-saving process with low energy consumption not only realizes comprehensive utilization of heat energy and reduces the project investment, but also facilitates product structure adjustment.

Description

technical field [0001] The present invention relates to the fields of MTG (gasoline) produced from methanol, DME (dimethyl ether) produced from methanol and MTG produced from DME (gasoline produced from dimethyl ether), especially a new energy-saving process for producing MTG (or DME) from crude (refined) methanol . Background technique [0002] my country is a country rich in coal and poor in oil. The import of gasoline has exceeded 50% of the total consumption, and the demand is still increasing. In recent years, my country's methanol and dimethyl ether installations and production have experienced a temporary surplus. The existing invention patent can fully realize the new energy-saving process of methanol production of gasoline, dimethyl ether production of gasoline or methanol production of dimethyl ether. It has a large market at home and abroad, and has a good prospect. [0003] Gas-phase crude (refined) methanol production of dimethyl ether technology is very matu...

Claims

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Application Information

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IPC IPC(8): C10G3/00C07C43/04C07C41/09
CPCY02P20/10Y02P30/20
Inventor 王庆新
Owner 王揽月
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