Vacuum pressure swing adsorption system running under stable pressure and process thereof

A technology of vacuum pressure swing adsorption and voltage stabilization, applied in the field of pressure swing adsorption, can solve the problems of reducing the fluctuation range, vacuum pump pressure fluctuation, pressure fluctuation, etc., to reduce the pressure fluctuation range, reduce the pressure fluctuation range, pressure fluctuation reduced effect
CN110860184AActive Publication Date: 2020-03-06马光俊 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
马光俊
Publication Date
2020-03-06

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Abstract

The invention discloses a vacuum pressure swing adsorption system running under a stable pressure and a control process thereof. The system comprises three sets of adsorption towers, fans and vacuum pumps, each set of adsorption towers consists of two adsorption towers, and each adsorption tower circulates according to the running mode of adsorption, primary even pressure drop, secondary even pressure drop, vacuum desorption, secondary even pressure rise, primary even pressure rise and feeding. The system adopts a six-tower process, through optimal control of the process itself, two pressure equalizing is adopted in adsorption and vacuum desorption processes, and compared with the existing two-tower to five-tower process, the fluctuation range is reduced due to one more pressure equalizing, thus solving the pressure fluctuation problem of the system itself, the problems of fan outlet pressure fluctuation and vacuum pump pressure fluctuation can be solved, and the system can operate stably.
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Description

technical field

[0001] The invention relates to a vacuum pressure swing adsorption system with stable voltage operation and its control process, in particular to a vacuum pressure swing adsorption system and its control process capable of overcoming pressure fluctuations in the system itself through process flow control, and belongs to the field of pressure swing adsorption. Background technique

[0002] Vacuum pressure swing adsorption (VPSA) is a commonly used process for separating or purifying gas mixtures. Its basic principle is to use the selectivity of adsorbents for gas adsorption. The adsorbent will adsorb and purify the mixed gas, and the purified gas will be discharged. After the adsorption is completed, it will be analyzed under vacuum, so that the adsorbed components can be separated from the corresponding adsorbent, and the adsorbent can be recycled.

[0003] The existing VPSA oxygen production system mostly adopts 2 to 5 tower processes, and the pressure fluct...

Claims

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