Method and system for recovering hydrogen after hydrogenation of unsaturated rubber and use thereof
By combining membrane separation and pressure swing adsorption processes, the problems of low hydrogen recovery rate and low purity in existing technologies have been solved, achieving efficient hydrogen recovery and purification and improving the economics of unsaturated rubber hydrogenation processes.
CN116062691BActive Publication Date: 2026-06-16CHINA PETROLEUM & CHEMICAL CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2021-11-01
- Publication Date
- 2026-06-16
AI Technical Summary
⚠Technical Problem
In existing technologies, the hydrogen recovery rate in pressure swing adsorption (PSA) processes is low, and the purity of hydrogen in membrane separation processes is not high, resulting in unsatisfactory hydrogen recovery and purification effects after hydrogenation of unsaturated rubber.
⚗Method used
By combining membrane separation and pressure swing adsorption (PSA) processes, hydrogen can be efficiently recovered through steps such as condensation, gas-liquid separation, coalescence, pressurization, membrane separation, and PSA.
🎯Benefits of technology
It improves the recovery rate and purity of hydrogen, reduces energy consumption and material costs, and enhances the economics of the hydrogenation process for unsaturated rubber.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116062691B_ABST
Abstract
The present application relates to the field of rubber, and discloses a method and system for recycling hydrogen after hydrogenation reaction of unsaturated rubber and application thereof. The method comprises the following steps: (1) condensing and performing first gas-liquid separation on residual hydrogen from the hydrogenation reaction of unsaturated rubber to obtain first gas phase and first liquid phase; (2) performing coalescence and pressure boosting on the first gas phase, and then performing second gas-liquid separation to obtain second gas phase and second liquid phase; (3) performing membrane separation treatment on the second gas phase to obtain permeation gas; and (4) performing pressure swing adsorption treatment on the permeation gas to obtain recycled hydrogen. The method combines membrane separation and pressure swing adsorption process technologies, fully utilizes the advantages of the two processes, ensures the recycling rate and quality of residual hydrogen after hydrogenation reaction, makes hydrogen as much as possible to be recycled, and improves the economy of the hydrogenation process of unsaturated rubber.
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