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Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas

A converter gas and coke oven gas technology, which is applied in the field of converter gas adsorption and regeneration heat utilization, can solve the problem that the heat of the adsorbent is not effectively utilized, and achieve the effects of saving cooling water consumption, reducing the use of steam, and reducing the heat source of regeneration heating

Active Publication Date: 2014-07-09
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Such converter gas purification requires external steam supply, and the heat generated during the regeneration of the adsorbent is not effectively utilized, and the waste water generated during the regeneration needs to be treated.

Method used

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  • Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas
  • Method for utilizing converter gas adsorption regeneration heat during preparing methyl alcohol by coke-oven gas and converter gas

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The heat recovery process of converter gas adsorption regeneration in this embodiment is as follows:

[0038] Coke oven gas pressure swing adsorption hydrogen extraction desorption gas flow ~ 23000Nm 3 / h (based on 100,000 tons / year of hydrogen stripping from coke oven gas and methanol from converter gas), the pressure is 30KPa, and the temperature is 40°C.

[0039] Its process is as follows figure 1 shown. The flow rate of desorption gas entering the regenerated converter gas temperature swing adsorber 1 for cold blowing is 3000Nm 3 / h, temperature 40°C, converter gas temperature swing adsorber 1 temperature ~ 350°C, desorption gas temperature after cold blowing is about ~ 180°C, enters the converter gas regeneration heater 5 and is heated to ~ 350°C, and then enters the converter that needs to be regenerated The gas temperature swing adsorber 2 heats and regenerates it, and the outlet desorption gas temperature is ~350°C; the desorption gas flow rate entering the ...

Embodiment 2

[0042] The heat recovery process of converter gas adsorption regeneration in this embodiment is as follows:

[0043] Coke oven gas pressure swing adsorption hydrogen extraction desorption gas flow ~ 16000Nm 3 / h (based on 70,000 tons / year of hydrogen stripping from coke oven gas and methanol from converter gas), the pressure is 40KPa, and the temperature is 40°C.

[0044] The flow rate of desorption gas entering the regenerated converter gas temperature swing adsorber 1 for cold blowing is 2200Nm 3 / h, temperature 40°C, converter gas temperature swing adsorber 1 temperature ~ 320°C, desorption gas temperature after cold blowing is about ~ 170°C, enters the converter gas regeneration heater 5 and is heated to ~ 320°C, and then enters the converter that needs to be regenerated The gas temperature swing adsorber 2 heats and regenerates it, and the outlet desorption gas temperature is ~320°C; the desorption gas flow rate entering the coke oven gas pre-purification adsorber 3 is 2...

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Abstract

The present invention relates to the technical field of methanol preparation, in particular to a method for utilizing heat of converter gas adsorption and regeneration in the production of methanol from coke oven gas and converter gas. The converter gas temperature swing adsorber is heated to the regeneration temperature required by the converter gas temperature swing adsorber after cold blowing, and then enters the converter gas temperature swing adsorber that needs to be regenerated to heat and regenerate it; the other part of the desorption first enters the completed heating regeneration The coke oven gas pre-purification adsorber is cold-blown; the two kinds of desorption gas are mixed, heated by the heater to the regeneration temperature required by the coke oven gas pre-purification adsorber, and enter the coke oven gas pre-purification adsorption that needs to be regenerated The device is heated and regenerated, and the regenerated desorbed gas is sent out after being water-cooled. The invention combines the regeneration of coke oven gas temperature swing adsorption and converter gas temperature swing adsorption, effectively utilizes the heat contained in the regeneration of the adsorbent, saves energy, and produces no waste water.

Description

technical field [0001] The invention relates to the technical field of methanol preparation, in particular to a method for utilization of converter gas adsorption regeneration heat in the technology of using coke oven gas to extract hydrogen and converter gas to prepare methanol. Background technique [0002] Under the condition of global economic integration, driven by the demand for coke and iron and steel products in the international market, the coking and iron and steel industries all over the country have developed rapidly. The rapid development of the iron and steel industry has driven economic development, but it also produces a lot of waste gas that pollutes the environment. The waste gases produced by the steel industry mainly include coke oven gas, converter gas and blast furnace gas. If these gases are not recycled and comprehensively utilized, they will cause environmental pollution. It has been seriously damaged, and this problem has attracted great attention f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01D53/047C07C31/04C07C29/151
CPCY02P20/10Y02P20/50
Inventor 蹇守华黄维柱王小勤
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND