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Method for producing methanol synthetic gas with hydrocarbon gas and coal as raw materials

A technology for methanol synthesis gas and gaseous hydrocarbons, applied in chemical instruments and methods, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve problems such as high content, less hydrogen and more carbon in synthesis gas, more hydrogen and less carbon in synthesis gas, etc. Achieve the effects of increasing methanol content, reasonable hydrogen-carbon ratio, and reducing conversion load

Active Publication Date: 2008-01-02
庞玉学
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Problems solved by technology

[0025] The technical problem to be solved by the present invention is to provide a method for producing methanol synthesis gas using natural gas and coal as raw materials, which not only solves the problem of less hydrogen and more carbon in the synthesis gas obtained from pressurized coal gasification, but also Solve the synthesis gas produced by gaseous hydrocarbon conversion with more hydrogen and less carbon and residual CH 4 The essential problem of high content, make full use of the H in the synthesis of two kinds of methanol 2 , CO, CO 2 and CH 4 and other effective gas resources to increase production, reduce energy consumption, and achieve the purpose of saving construction investment, reducing production costs, and improving economic benefits

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  • Method for producing methanol synthetic gas with hydrocarbon gas and coal as raw materials

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Embodiment Construction

[0046] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] As shown in Figure 1, it is a schematic diagram of the structural relationship of the process system of the present invention and the flow of various reactants. As can be seen from Fig. 1, this method provided by the present invention takes gaseous hydrocarbon and coal as raw material production methanol synthesis gas is such:

[0048] Raw material natural gas 1 with a flow rate of 13.8Kmol / h, a pressure of 3.8MPa, and a temperature of 350°C that has been refined and desulfurized to a sulfur content of 4 The conversion reaction with water vapor, the first-stage reforming gas exiting the externally heated first-stage reformer has a pressure of 3.5MPa and a temperature of 800°C, and the residual CH 4 Content 6%. Another stream of mixed gas 4, accounting for about 45% of the total, goes to the reforming tube of ...

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Abstract

Disclosed is a method for producing methanol synthetic gas with hydrocarbon gas and coal as raw materials, which comprises preparing methanol synthetic gas using gaseous hydrocarbon and coal as raw material, mixing by the following proportion, 0.5-1 part of methanol synthetic gas by using gaseous hydrocarbon as the raw material, 1 part of methanol synthetic gas by using coal as the raw material, making the hydrogen-carbon ratio of the obtained methanol raw material gas to be (H2-CO2) / (CO+CO2)=2.0-2.1, compressing and loading into methanol synthesizing procedure.

Description

technical field [0001] The invention relates to a method for producing methanol synthesis gas by using gaseous hydrocarbons and coal as raw materials, especially a method for producing methanol synthesis gas by using natural gas and coal as raw materials, which belongs to the technical field of petrochemical industry. Background technique [0002] Using gaseous hydrocarbons as raw materials to produce methanol synthesis gas, including raw material gas compression, purification and desulfurization, hydrocarbon steam reforming and other steps; using coal as raw material to produce methanol synthesis gas, including coal water slurry or dry powder preparation, pressurized gasification, CO conversion, Steps such as removal of acid gas. Methanol synthesis gas and cycle gas are compressed, synthesized, rectified and other processes to produce refined methanol. Methanol is a high-energy-consuming product, and hydrocarbon steam reforming and coal gasification, or gas-making processe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/04C07C29/151C01B3/34
Inventor 庞玉学王志坚张学仲刘武烈万蓉庞彪曾竹萍冉龙鸣
Owner 庞玉学
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