Method for preparing methanol synthesis gas with oven gas and blast furnace gas

A technology of methanol synthesis gas and blast furnace gas, which is applied in the direction of gas fuel, petroleum industry, fuel, etc., and can solve the problems of converter gas pressure and component fluctuations, insufficient methanol production for carbon supplementation, low CO content and calorific value, etc. Achieve the effects of low impurity gas content, low cost, and reduced emissions
CN101343580AInactive Publication Date: 2009-01-14SICHUAN TIANYI SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN TIANYI SCI & TECH
Publication Date
2009-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for methanol synthetic gas through coke oven gas and blast furnace gas. The preparation method adopts coke oven gas as the raw material, and H2 is extracted through pressure swing adsorption; the blast furnace gas with high yield and relatively low calorific value is adopted as the raw material, an adsorbent which can adsorb CO and CO2 is utilized to simultaneously extract and reclaim the CO and the CO2 in the blast furnace gas, and then the H2, the CO and the CO2 are mixed and prepared into the methanol synthetic gas. The hydrogencarbon ratio f value of the methanol synthetic gas prepared according to the method is within the optimum range of 2.05 to 2.60, and the contents of nitrogen gas and other impure gases are suitable for the methanol production. The by-product gas generated during the steel production process is utilized to prepare the methanol synthetic gas, the useful components in the gas are utilized, the discharging of harmful substances into the environment is reduced, and not only the chemical reaction can not occur during the process, but also the carbon adding is not required, the technical process is short, the process is simple, and the cost is low, so the preparation method is one of the preferable methods for the preparation of methanol synthetic gas.
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Description

technical field

[0001] The invention relates to a method for producing methanol synthesis gas, more specifically, relates to a method for producing methanol synthesis gas with coke oven gas and blast furnace gas. Background technique

[0002] Coke oven gas, blast furnace gas and converter gas are by-products in the iron and steel production process. At present, only part of the heat energy is recovered, and their effective components have not been utilized efficiently. The coke oven gas, blast furnace gas and converter gas produced in the iron and steel production process are rich in hydrogen, carbon and other elements, and useful components are recovered from them to prepare methanol synthesis gas and produce methanol. The production cost is low and has good economic benefits. It is an effective way to use it. Coke oven gas contains hydrogen (H 2 ) is high, contains low carbon monoxide (CO), and the hydrogen-to-carbon ratio f value reaches about 6 {f=(H 2 -CO 2 ) / CO+CO ...

Claims

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