一种煤气变温变压吸附耦合净化并加压发酵的方法及系统

By deeply removing impurities from coal gas and optimizing the component ratio through temperature and pressure swing adsorption coupled purification method, combined with staged pressurization technology, the problems of incomplete purification, low fermentation efficiency and high energy consumption in existing coal gas purification technologies have been solved, achieving high-efficiency and high-value conversion and low carbon emissions.

CN122405331APending Publication Date: 2026-07-17河北首朗新能源科技有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
河北首朗新能源科技有限公司
Filing Date
2026-04-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing gas purification technologies are insufficient to remove impurities deeply, resulting in low fermentation efficiency and high energy consumption. Atmospheric pressure fermentation has low solubility, while high pressure fermentation inhibits the activity of microorganisms. Existing processes cannot balance purification depth and energy economy.

Method used

A temperature- and pressure-swing adsorption-coupled purification method is adopted, which deeply removes impurities through composite adsorbents and selective adsorbents, and optimizes the component ratio through staged pressurization technology, ultimately achieving efficient fermentation in a pressurized fermentation unit.

Benefits of technology

It achieves efficient and deep purification, optimizes component ratios, improves fermentation conversion rate and gas-liquid mass transfer efficiency, reduces energy consumption and carbon emissions, and meets the requirements of green and low-carbon development.

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Abstract

本发明公开了一种煤气变温变压吸附耦合净化并加压发酵的方法及系统,该方法包括:对原料煤气进行除尘、降温预处理;将预处理煤气通入变温吸附单元,通过复合吸附剂脱除水分、硫化物、重烃及挥发性有机物,得到净化气;将净化气通入变压吸附单元,通过选择性吸附剂将CO和CO2与H2和N2分离,得到富含CO和CO2的目标发酵气;将目标发酵气分级加压至预设压力;将加压后的目标发酵气通入加压发酵单元,与乙醇梭菌菌液逆流接触反应,生成乙醇、乙酸或微生物蛋白。本发明通过变温吸附与变压吸附耦合净化,深度脱除有害杂质并优化底物比例,结合分级加压发酵,有效解决了现有技术净化不彻底、发酵效率低、能耗高的问题,实现了煤气的高效高值转化。
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