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Process for preparing methanol by making steel enterprises coke oven gas and converter gas as raw material

A technology for coke oven gas and converter gas, which is applied in the preparation of hydroxyl compounds, the preparation of organic compounds, and organic chemistry, etc., can solve the problems of waste of chemical raw material resources, high content of inert components, and environmental pollution.

Inactive Publication Date: 2006-07-19
昆山市迪昆精细化工公司 +1
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Problems solved by technology

With the realization of the west-to-east gas transmission, coke oven gas has been replaced by cleaner natural gas with higher calorific value as city gas, and the amount of remaining coke oven gas will increase day by day, while converter gas and blast furnace gas are inert due to their low calorific value. The component content is high, and the converter gas also contains harmful impurities such as sulfur and phosphorus, so most of it can only be vented as waste gas, which not only pollutes the environment, but also wastes valuable chemical raw material resources

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  • Process for preparing methanol by making steel enterprises coke oven gas and converter gas as raw material

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Embodiment Construction

[0014] Coke oven gas contains 45%~60% hydrogen, 5%~7% CO, 2.0%~3.5% CO 2 , 22%~28%CH 4 , if a large amount of H in the coke oven gas 2 Reasonably mixed with converter gas containing 50% to 55% CO, it can be made into raw material gas that meets the requirements of methanol synthesis, so that coke oven gas and converter gas can be used reasonably and effectively.

[0015] The present invention utilizes the active ingredient H in the coke oven gas 2 and CO in converter gas and CO 2 To adjust the carbon-hydrogen ratio to meet (H 2 -CO 2 ) / (CO+CO 2 )=2.05~2.10 gas as raw material gas for methanol synthesis.

[0016] Utilization of active ingredient H in the coke oven gas said by the present invention 2 CO in converter gas can be directly blended with coke oven gas and converter gas, or H can be separated from the two gases 2 and CO and then re-deploy or separate H from coke oven gas 2 Mix with converter gas or separate CO from converter gas and mix with coke oven gas, and...

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Abstract

The disclosed preparation method for methanol comprises: using treated and initial desulfurized coking gas from the iron and steel enterprise to mix directly with the converter gas or first extracting H2 or CO, or discharging gas for the methanol synthesis pond to recover H2 and then mix with the coking gas and converter gas to adjust into the composite gas fit to technical request with (H2-CO2) / (CO+CO2) ratio as 2.05~2.10. Wherein, recovering all produced tail gas to dope with blast furnace gas and prepare the fuel gas for enterprise. This invention realizes comprehensive utilization for the three gases.

Description

technical field [0001] The invention relates to a methanol production process. Background technique [0002] Carbon-containing substances such as natural gas, coal, naphtha or heavy oil can be used as raw materials for methanol production. In foreign countries, natural gas is mainly used as the raw material for methanol production, which has accounted for more than 80% of the world's total methanol production capacity. my country is a country that lacks oil and gas but is extremely rich in coal resources, so coal is mainly used as raw material to produce methanol. With the development of my country's steel and coking industries, a large amount of coke oven gas, converter gas and blast furnace gas have been produced accordingly. Except part of the coke oven gas is used by the coke oven itself and used as city gas, the rest can only be released as waste gas. With the realization of the west-to-east gas transmission, coke oven gas has been replaced by cleaner natural gas wit...

Claims

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Application Information

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IPC IPC(8): C07C31/04C07C29/151
Inventor 方德巍郭新宇佟濬芳赵骧李永祥周荣龙顾志敏
Owner 昆山市迪昆精细化工公司
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