Methanol co-production recycling system

A circulation system, methanol technology, applied in the separation/purification of hydroxyl compounds, preparation of organic compounds, chemical instruments and methods, etc., can solve the problem that the service life of catalysts is difficult to guarantee, etc.

Inactive Publication Date: 2016-02-03
XUZHOU WEITIAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

It is difficult to guarantee the service life of the catalyst when the outlet temperature of the synthesis tower is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Coke oven gas from coking unit, flow rate 45000Nm 3 / h, temperature 30~40℃, H 2 S content≤50mg / Nm 3 , enter the coke oven gas cabinet through the air inlet water seal of the gas cabinet, and the pressure after buffering and stabilizing is about 200mmH 2 O (g), and then enter the coke oven gas compressor through the gas cabinet outlet water seal;

[0038] Coke oven gas from the gas tank, the pressure is about 200mmH 2 O, the temperature is about 40°C, after the four-stage compression of the coke oven gas compressor, the gas pressure is 2.5MPa(g), after buffering and cooling, the gas temperature drops to 40°C, and the water is separated by the main pipe Sent to fine desulfurization section. The fine desulfurization section comes from coke oven gas compressed by coke oven gas, with a pressure of 2.5MPa(g), a temperature of 40°C, and a flow rate of 45000Nm 3 / h,H 2 S content≤50mg / Nm 3 , organic sulfur content ≤ 250mg / Nm 3 , first enter the filter and pre-desulfuri...

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PUM

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Abstract

The invention discloses a methanol co-production recycling system. In the system, coke gas passes through a gas holder, a coke gas compression section, a fine desulfurization section I, a conversion section I, a synthetic gas compression section, a methanol synthesis tower, a methanol rectification section, a fine desulfurization section II, a conversion section II and a methanol synthesis section in sequence, which are all connected with a power station through heat pipelines. Through adoption of the system, heat is recycled, emission is reduced, and the methanol synthesis rate is high.

Description

technical field [0001] The invention relates to a methanol co-production circulation system. Background technique [0002] The main process of methanol production from coke oven gas in the prior art is to convert desulfurized coke oven gas to obtain CO, CO 2 and H 2 It is sent to a methanol synthesis tower and synthesized under the action of a catalyst. After the gas from the synthesis tower is cooled and separated from methanol, most of it is sent to the synthesis tower as recycle gas together with the fresh gas feed of the synthesis tower, and the remaining part of the gas is methanol purge gas. In order to maintain the balance of the system, coke oven gas is produced Methanol enterprises usually discharge the methanol purge gas directly or send it to coal for combustion. [0003] In coke oven gas to methanol enterprises, in order to meet the needs of economic development, it is required to increase production capacity. It is difficult to guarantee the service life of ...

Claims

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Application Information

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IPC IPC(8): C07C29/151C07C31/04C07C29/156C07C29/92C07C29/80C07C29/76
CPCC07C29/151C07C29/156C07C29/76C07C29/80C07C29/92C07C31/04
Inventor 王平山刘小源姜龙龙朱友光
Owner XUZHOU WEITIAN CHEM CO LTD
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