Method for synthesizing methanol through low-carbon technology

A technology for synthesizing methanol and technology, which is applied in the field of methanol synthesis with low-carbon technology, can solve the problems of affecting conversion efficiency and difficult cost control, and achieve the effects of increasing economic benefits, significant energy saving effects, and reducing energy consumption

Active Publication Date: 2012-07-04
SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology

[0002] Using natural gas or petroleum gas to produce methanol has a mature process, because the production of methanol from natural gas or petroleum gas will produce a large amount of excess hydrogen, which will affect the conversion ef

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  • Method for synthesizing methanol through low-carbon technology
  • Method for synthesizing methanol through low-carbon technology
  • Method for synthesizing methanol through low-carbon technology

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Embodiment Construction

[0040] Such as figure 1 As shown, the principle of process 1 for methanol production in coal chemical industry is: the crude gas generated by coal gasification is transformed through CO conversion process 2, that is, CO+H 2 O—→H 2 +CO 2 The transformation reaction produces H 2 +CO+CO 2 Completion: The crude water gas from the gasification scrubber is separated by the gas-liquid separator to remove the moisture entrained in the gas, and then divided into two streams, one part enters the raw material gas preheater and exchanges heat with the shift gas to about 305°C, enters the shift furnace, and is separated from itself The carried water vapor undergoes a partial shift reaction under the action of the sulfur-tolerant shift catalyst; the high-temperature shift gas exiting the shift furnace passes through the feed gas preheater for heat exchange, and then enters the medium-pressure steam generator to produce 2.5MPa(G) saturated steam by-product. The gas at the outlet of the m...

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Abstract

The invention relates to a manufacturing process of methanol and in particular to a method for synthesizing methanol through a low-carbon technology. The method is characterized by comprising the following steps: mixing synthesis gas transformed from methane gas and the synthesis gas produced by coal gasification in proportion, performing a synthesis compression process on the mixed gas, and then enabling the mixed gas to enter into a methanol reactor for producing the methanol, wherein the methane gas is natural gas or oil-associated gas or coal bed gas or coke oven gas or blast furnace gas or oil refining dry gas and other CH4-rich mixed gas; the hydrogen-carbon ratio or the ratio of H:C is the proportion of (H2-CO)/(CO+CO2) in the synthesis gas, and H2, CO and CO2 gas components are calculated by percentage content; and the production of the synthesis gas by coal gasification comprises the production of raw gas and the regulation process of the hydrogen-carbon ratio. The method for synthesizing the methanol through the low-carbon technology, provided by the invention, has the advantages of high production efficiency, high utilization rate of resources and low emission of carbon dioxide.

Description

technical field [0001] The invention relates to a methanol manufacturing process, in particular to a method for synthesizing methanol with low-carbon technology. Background technique [0002] Using natural gas or petroleum gas to produce methanol has a mature process, because the production of methanol from natural gas or petroleum gas will produce a large amount of excess hydrogen, which will affect the conversion efficiency on the one hand, on the other hand, natural gas or petroleum gas is used as raw material to produce methanol, due to natural gas or petroleum gas. The international price of oil is affected, and its cost is difficult to control. For this reason, a process of producing methanol through coal chemical industry is being widely used. Due to the abundance of coal resources in our country, the cost control of methanol produced therefrom is relatively easier than that of natural gas or oil. However, the biggest problem of methanol production in coal chemical...

Claims

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Application Information

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IPC IPC(8): C07C31/04C07C29/151C01B3/12
Inventor 沈浩张积耀袁定雄李大鹏王香增王思晨王昌瑞李成义高瑞民段文杰
Owner SHAANXI YANCHANG PETROLEUM GRP
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