Gas decarbonization system and gas treatment system

Abstract

The invention discloses a gas decarbonization system and a gas treatment system and relates to the technical field of gas decarburization. The gas decarburization system comprises a raw material gas pipe, a non-adsorbed gas pipe, a reverse exhaust pipe, a rotary valve and an adsorption tower. The rotary valve comprises a non-rotatable member and a rotation member. The non-rotatable member is provided with a first flow path and the rotation member is provided with a second flow path. The rotation member realizes selective communication of the raw material gas pipe, the non-adsorbed gas pipe, the reverse exhaust pipe and the adsorption tower. The gas treatment system comprises the gas decarbonization system. The gas decarbonization system and the gas treatment system utilize the same rotary valve to control the multiple pipes so that a cost is reduced and control is convenient.

Description

technical field [0001] The invention relates to the technical field of gas decarburization, in particular to a gas decarbonization system and a gas treatment system. Background technique [0002] Since the PSA gas decarbonization system contains many operating steps, the number of program-controlled valves is very large, which increases the investment cost and equipment installation cost of the entire device, and the valve frame area occupies a large area, which is not conducive to the prying of the device. [0003] Due to the short cycle time of the pressure swing adsorption gas decarburization system, the switching frequency of the program-controlled valve is high, and the failure probability of each component of the valve is greatly increased. At the same time, during the pressure balance process of pressure swing adsorption, the valve core is washed by high-speed air flow, and the valve sealing surface is easily damaged, causing internal leakage of the valve, affecting t...

AI Technical Summary

Problems solved by technology

[0002] Since the PSA gas decarbonization system contains many operating steps, the number of program-controlled valves is very large, which increases the investment cost and equipment installation cost of the entire device, and the valve frame area occupies a large area, which is not conducive to the prying of the device.

[0003] Due to the short cycle time of the pressure swing adsorption gas decarburization system, the switching frequency of the program-controlled valve is high, and the failure probability of each component of the valve is greatly increased

At the same time, during the pressure balance process of pressure swing adsorption, the valve core is washed by high-speed air flow, and the valve sealing surface is easily damaged, causing internal leakage of the valve, affecting the operation of the device, increasing the daily maintenance cost and difficulty of repairing the device, and prolonging the production time. increased production costs

[0004] Judging from the current operation of the pressure swing adsorption gas decarburization device, the failure of the program-controlled valve or internal leakage of the sealing surface is the biggest bottleneck affecting the stable operation of the entire device

Although the service life of the programmable valve can be extended by improving the valve design and optimizing the structure of the sealing surface, the problems of the fault of the programmable valve and internal leakage of the sealing surface cannot be avoided fundamentally

[0005] In general, the time of adsorption operation in the process of gas decarburization is short (less than one second). Such a short time requires that the program-controlled valve must be able to respond quickly, which has very high requirements for the program-controlled valve, which greatly increases the cost of the program-controlled valve.

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