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为解决青藏高原地区气温低所带来的沼气池发酵物料温度低、沼气产气效率低等问题,充分利用该地区丰富的太阳能光热资源,本研究设计了一种以太阳能为辅助加热源的沼气发酵装置。结合当地气候条件,确定了该装置总体结构与关键部件设计选型,并进行了相关沼气发酵试验。试验结果表明,该装置能够实现在太阳辐射强度高、昼夜温差大的高原地区处于不同日照环境下的沼气发酵,能够使各种常用沼气发酵物在较为恒定温度下,产气时间缩短,较普通沼气池产气效率有所提高,增加了经济与使用效益。该装置的设计将为中国太阳能辅助沼气发酵装置的研发提供参考。
In order to solve the problem of low temperature of biogas fermentation materials and low gas production efficiency of biogas brought by the low temperature in the Qinghai-Tibet Plateau, and by making full use of the abundant solar thermal resources in the region, this study designed a solar-assisted heating source Biogas fermentation plant. Combined with the local climatic conditions, the overall structure of the device and key components design and selection were determined, and the relevant biogas fermentation test was carried out. The test results show that the device can realize biogas fermentation under different sunshine environments in the plateau where the solar radiation intensity is high and the temperature difference between day and night is high, which can shorten the gas production time of the common biogas fermentation products at a relatively constant temperature, Biogas gas production efficiency has increased, an increase of economic and operational efficiency. The design of this device will provide a reference for the research and development of solar assisted biogas fermentation plant in China.