Dynamic modeling method for syngas one-step dimethyl ether preparation

A dynamic modeling, DME technology, used in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2015-01-21
杭州百子尖科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

With the development of the DME market, its demand is increasing day by day, and the current research and development model is more idealistic. Therefore, it is particularly necessary to develop a dynamic model for the one-step synthesis of DME.

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  • Dynamic modeling method for syngas one-step dimethyl ether preparation
  • Dynamic modeling method for syngas one-step dimethyl ether preparation
  • Dynamic modeling method for syngas one-step dimethyl ether preparation

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings.

[0058] The object of the present invention is to propose a dynamic modeling method for the one-step synthesis of dimethyl ether from synthetic gas, which regards the feed and discharge conditions of the reactor as non-stable quantities, and solves the kinetic equation at a certain temperature according to the kinetic equation of atomic conservation and reaction. The material composition inside the reactor, the heat loss is introduced into the energy balance equation for the first time, and the temperature in the reactor is solved through the balance equation.

[0059] Under the action of a composite catalyst, the main reactions of syngas one-step direct synthesis of dimethyl ether include methanol synthesis, methanol dehydration and water-gas shift reaction:

[0060] Methanol synthesis reaction: CO+2H 2 CH 3 Oh

[0061] Methanol dehydration reaction: 2CH 3 Oh ...

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Abstract

The invention relates to a dynamic modeling method for syngas one-step dimethyl ether preparation. The method is a novel method for dynamical modeling for the syngas one-step dimethyl ether preparation and firstly shows that including heat loss into the energy conservation equation for performing iterative computation to judge whether the temperature in a reactor is reasonable so as to calculate the ingredients in the reaction according to atomic material conservation, reaction kinetics equation and energy conservation equation; when calculating, the temperature and the content of each ingredient in the syngas one-step dimethyl ether preparation reactor are assumed; the contents of the ingredients in the reactor are calculated through the material conservation equation and reaction kinetics equation, and then whether the assumed temperature is reasonable is determined through the energy conservation equation. According to the reactor-based dynamic modeling method for syngas one-step dimethyl ether preparation, a novel path is provided for the calculation of dynamic modeling for the dynamic modeling method for syngas one-step dimethyl ether preparation.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a dynamic modeling method for one-step synthesis gas production of dimethyl ether. Background technique [0002] Dimethyl ether is a basic chemical raw material, which is widely used in chemical industries such as pharmaceuticals, fuels, and pesticides. Dimethyl ether can be used as a solvent and anesthetic, and can also be used as an aerosol propellant and refrigerant instead of Freon to reduce the damage of Freon to air pollution and the ozone layer; it has similar physical properties to LPG and can be used as a clean energy source; It can also be used as fuel in combined cycle power plants. [0003] At present, there are two main methods for the synthesis of DME, namely the dehydration of methanol to produce DME and the one-step method of synthesis gas to directly produce DME. Among them, the one-step synthesis gas direct production of dimethyl ether is a combination ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 魏江葛铭葛文锋郑小青郑松李小爽
Owner 杭州百子尖科技股份有限公司
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