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Method for preparing carbon monoxide from coke oven gas and carbon dioxide

A carbon dioxide, carbon monoxide technology, applied in carbon monoxide, chemical industry, climate sustainability, etc., to achieve the effect of good use value

Inactive Publication Date: 2014-07-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is limited to adjusting the hydrogen-carbon ratio of the synthesis gas based on the steam reforming of natural gas.
The catalyst is only suitable for the reverse water gas reaction of hydrogen and carbon dioxide

Method used

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  • Method for preparing carbon monoxide from coke oven gas and carbon dioxide
  • Method for preparing carbon monoxide from coke oven gas and carbon dioxide
  • Method for preparing carbon monoxide from coke oven gas and carbon dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 1 Described, implement the method that a kind of carbon dioxide conversion coke oven gas system carbon monoxide provided by the present invention, concrete processing steps are as follows:

[0046] First, under normal temperature and 3MPa, coke oven gas and carbon dioxide with a purity of 93% are used as raw material gas and mixed with the circulating gas. The volume ratio of coke oven gas and carbon dioxide in the raw gas is 1:2.2. Put it into the preheater to preheat to 700~1300℃;

[0047] Secondly, put the preheated mixture at 3500~8500h -1 It is sent into the reactor under the condition of space velocity, and the raw material gas entering the reactor is divided into three stages of reaction;

[0048] The first reaction stage is a non-catalytic conversion reaction of part of methane, part of hydrogen and carbon dioxide in the mixed gas;

[0049] In the second reaction stage, the bifunctional catalyst Ni-Fe-Cu / CaO / Al 2 o 3 Under the action, after ...

Embodiment 2

[0061] Such as figure 2 Described, implement the process of making carbon monoxide described in the present invention as follows:

[0062] First, at room temperature and 6MPa, carbon dioxide with a purity of 98% and coke oven gas are mixed with the circulating gas as raw material gas. The volume ratio of coke oven gas and carbon dioxide in the raw gas is 1:2.8; heat exchange with reformed gas;

[0063] Secondly, the mixed gas is mixed at 3500~8500h -1 The reaction heat is supplied by the reactor, and the reaction temperature is 700~1300°C. The raw material gas entering the reactor reacts in three stages. The first stage is part of the methane, part of the hydrogen and carbon dioxide in the mixed gas. Non-catalytic conversion reaction; the second stage is in the bifunctional catalyst Ni-Fe-Cu / MgO / Al 2 o 3 Under the action, after the first stage of reaction, methane and carbon dioxide in the reaction gas undergo a catalytic reforming reaction to generate carbon monoxide and ...

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Abstract

A method for reforming coke oven gas and carbon dioxide to produce carbon monoxide is to mix purified coke oven gas and carbon dioxide as raw material gas, and then send them into a reactor. Under a certain temperature and pressure, hydrogen, methane and The carbon dioxide undergoes a homogeneous and heterogeneous transformation reaction, and the obtained transformation gas is separated through a three-stage reaction to obtain carbon monoxide, and the remaining gas is returned to the reactor for circular reaction. The method of the invention uses a dual-function catalyst and an inverse conversion catalyst, which has a high conversion rate of carbon dioxide, a high yield of carbon monoxide, and is not easy to deposit carbon, and carbon monoxide is produced by using coke oven gas and carbon dioxide, which provides a new source of raw materials for the preparation of carbon monoxide, and also provides a new source of coke. The clean and efficient conversion of furnace gas and the effective value-added utilization of resources have opened up a new way, which has good utilization value in terms of energy saving, emission reduction and low-carbon economy.

Description

technical field [0001] The invention relates to a method for producing carbon monoxide from coke oven gas, in particular adopting a three-stage reaction process, using a dual-function catalyst and an inverse conversion catalyst to reform the methane-based hydrocarbon gas in coke oven gas with carbon dioxide, a greenhouse gas, and carbon dioxide Carbon monoxide can be produced by reverse conversion reaction with a large amount of hydrogen in coke oven gas. Background technique [0002] Carbon monoxide is the most important raw material for the synthesis of basic organic chemical products and intermediates, especially for the production of alcohols, aldehydes, ketones, anhydrides, acid chlorides, lactones, quinones, phosgene, etc., as well as the preparation of solvents and plasticizers by oxo synthesis. In recent years, the output of chemical products based on carbon monoxide has continued to increase. [0003] The composition of coke oven gas is slightly different due to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/18C01B32/40
CPCY02P20/10
Inventor 申曙光李安琪赵志军
Owner TAIYUAN UNIV OF TECH