carbon monoxide shift process

Abstract

The invention relates to a carbon monoxide conversion process, which solves the problems of the existing carbon monoxide conversion process such as complex, long process, unstable system temperature control and easy deactivation of catalysts. The technical solution includes that the crude gas is separated from the gas and liquid by the gas separator, and then sent to the gas filter for filtration, and then sent to the steam mixer to be mixed with medium-pressure steam, and the mixed gas is sent to the gas preheating gas to exchange heat with the reaction gas exiting the isothermal reactor Heating up, the heated mixed gas is sent to the isothermal reactor for reaction, so that the reaction conversion rate of the raw material gas reaches more than 90%, and the reacted reaction gas is sent to the gas preheater to exchange heat with the mixed gas and then sent to the low The adiabatic reactor is further fully reacted to obtain shift gas. The technical process of the invention is extremely simple, reliable in control, low in equipment investment, low in operating cost, energy-saving and consumption-reducing, and high-grade steam can be obtained.

Description

technical field [0001] The invention relates to a conversion process in the chemical industry, in particular to a carbon monoxide conversion process. Background technique [0002] Using shift reaction to adjust CO and H in gas 2 It is an important way in the coal chemical industry to produce chemical products such as methanol, synthetic ammonia, and natural gas. Taking synthetic ammonia as an example, the raw material gas required for the production of synthetic ammonia is hydrogen and nitrogen, while crude gas generally contains a relatively large amount of CO, which can reach more than 70%, which needs to be converted into CO by reacting with water 2 with H 2 . Carbon monoxide shift is a process in which crude gas reacts with water vapor in a shift reactor at a certain temperature with the help of a catalyst to generate carbon dioxide and hydrogen. [0003] The transformation reaction is a strongly exothermic reaction and is a process controlled by thermodynamics. In i...

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Problems solved by technology

[0003] The transformation reaction is a strongly exothermic reaction and is a process controlled by thermodynamics. In the industry, most transformation devices use adiabatic fixed-bed reactors. This reaction process is generally equipped with multi-stage reactors and multiple heat exchange equipment. The process route is long and the system resistance Large, large project investment, high energy consumption in operation, high energy consumption of low-grade heat but cannot be effectively used, high energy consumption of the system, easy overheating of the reactor, high temperature deactivation of the catalyst, etc.

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