The objective of this project is to integrate a domestic photocatalytic desulphurization facility with a biogas upgrading module and try to develop a system for biogas desulphurization and upgrading under ambient conditions. Four photocatalytic desulphurization reactors (PDRs) and one activated carbon reactor (ACR) were applied for biogas desulphurization and filtration under ambient conditions. Moreover, a hollow fibre carbon dioxide (CO2) adsorption module was applied for biogas upgrading. The operation pressure of the PDR and ACR was under ambient pressure. Results showed that hydrogen sulphide removal efficiency of the photocatalytic desulphurizer was about 0.99–1.00 (v/v) under the inlet biogas flow less than 5 litres/min and the concentration of inlet hydrogen sulphide was lower than 5600 mg/m3. For desulphurized biogas upgrading, the removal efficiency of CO2 was higher than 0.90 (v/v) under the outlet biogas flow was 1 litre/min (i.e. inlet biogas flow was about 2 litres/min). However, the ratio of methane in the upgrading biogas was lower than 0.90 (v/v). Thus, nitrogen gas removal cartridges will be integrated with the biogas upgrading module to promote methane concentration in the upgraded biogas.

中文翻译：

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中试光催化脱硫后中空纤维二氧化碳吸附模块畜牧沼气提质研究

本项目的目标是将国内的光催化脱硫装置与沼气提质模块相结合，并尝试开发一种常温条件下的沼气脱硫提质系统。4台光催化脱硫反应器（PDR）和1台活性炭反应器（ACR）用于环境条件下的沼气脱硫和过滤。此外，中空纤维二氧化碳（CO2) 吸附模块应用于沼气提质。PDR 和 ACR 的操作压力在环境压力下。结果表明，在入口沼气流量小于5 litres/min且入口硫化氢浓度低于5600 mg/m的情况下，光催化脱硫器的硫化氢去除效率约为0.99~1.00 (v/v)3. 对于脱硫沼气提质，CO的去除效率2在出口沼气流量为 1 升/分钟（即入口沼气流量约为 2 升/分钟）下高于 0.90 (v/v)。然而，提质沼气中的甲烷比例低于 0.90 (v/v)。因此，氮气去除滤筒将与沼气提质模块集成，以提高提质沼气中的甲烷浓度。