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Integrated technology of city coal gas coproducing methanol

A technology for the synthesis of city gas and methanol, which is applied in the petroleum industry, the manufacture of combustible gas, and the mitigation of joint combustion, to achieve the effects of stable operation, saving construction investment and reducing land occupation.

Active Publication Date: 2008-09-24
WISON ENG
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  • Description
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AI Technical Summary

Problems solved by technology

But considering whether the coal gasification process is suitable for the co-production of methanol from city gas has not been reported yet.

Method used

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  • Integrated technology of city coal gas coproducing methanol
  • Integrated technology of city coal gas coproducing methanol

Examples

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Embodiment Construction

[0017] For better illustration of the present invention, by comparing with the technique of pure coal-to-gas production methanol, give examples as follows:

[0018] The invention adopts fixed-bed pressurized gasification, low-temperature methanol washing and purification, and gas water treatment production technology, and meets the following requirements of city gas supply: city gas supply with wide applicability of coal types, gas calorific value and carbon monoxide content complying with national regulations Standards and devices can operate safely and stably for a long period of time. The net gas composition and gas volume after washing with low-temperature methanol are:

[0019]

[0020] Daily supply of city gas (maximum) 91×10 4 N m 3 , calorific value 14.69MJ / Nm 3 (3510Kcal / Nm 3 ).

[0021] Simultaneous production of methanol:

[0022] (1) Methanol synthesis process

[0023] Adopt technological measures of increasing feed gas intake, reducing circulating gas vo...

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Abstract

The present invention discloses a new process for coproducing urban gas and methanol. Said process is characterized by that it adopts a technical scheme of properly enlarging diameter of methanol reactor, raising raw material gas capacity and increasing released gas capacity; utilizes the hydrogen gas in the released gas produced in the course of recovering methanol by means of membrane separation technique to regulate H / C ratio; changes the traditional compressor with two structure forms of raw material gas and circulating gas into the double-in double-out single-stage reciprocating compressor and adopts a low-temperature methanol washing desulfurization process so as to implement the invented goal.

Description

technical field [0001] The invention relates to a new organic synthesis chemical process, in particular to an integrated process for city gas co-production of methanol. Background technique [0002] At present, significant progress has been made in the new generation of coal chemical process technology of coal-to-synthesis gas and syngas-to-methanol, but all of them rely on the selection of effective gas components (H 2 The coal gasification process with high content of +CO) (more than 70%) is the focus. However, methanol as a chemical product has inconsistent requirements for gas composition and gas composition requirements, which brings certain difficulties to the configuration of methanol process. How to optimize the configuration of methanol process so that it can meet the requirements of city gas production is very important. According to the characteristics of the city gas co-production methanol process, which process technology to use to make the city gas co-product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/04C07C29/151C10J3/00C10K1/00
CPCY02E20/18
Inventor 杨志敏孙永亮张玉宝李福达李春生魏毅力吴邦庆张晓安
Owner WISON ENG
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