摘要
为保证兰州地区大中型沼气工程的产气稳定性,解决由于环境温度低而造成发酵塔内温度跨度较大的问题。笔者针对兰州市花庄镇沼气工程,构建一套太阳能与发电余热增温保温系统,达到保证发酵塔在不同季节均能维持恒温厌氧发酵的目的。文章阐述了系统的原理,并对系统的各部分的热量需求进行理论计算。结果表明,该沼气工程平均日需热量7531.9 MJ,太阳能与发电余热增温保温系统平均日产热量7623.4 MJ,使整个发酵塔的温度在夏季和其他季节分别维持在52℃和37℃,完全能满足整个工程的热量需求。该系统可使发酵系统在不同季节均能保持恒温厌氧发酵,保证了其产气稳定,因而这套系统是可行的,为兰州地区太阳能与发电余热增温保温系统提供了参考。
In order to ensure the biogas production stability for large and medium-sized biogas project in Lanzhou and solve the problem of low temperature, a insulation system for biogas project in Huazhuang town of Lanzhou was established adop- ting solar energy and waste heat from power generation as heat supply. The system principles were elaborated, and the theo- retical energy requirement were calculated. The result showed that the biogas project needed a daily heat of 7531.9 MJ for keeping a proper temperature, while the solar energy and waste heat from power generation could provide 7623.4 MJ per day on average, which were able to meet the heat demand for the biogas project, keeping the fermentation temperature maintained at 52℃ in summer and 37℃ in other seasons.
作者
李金平
曹岗林
曹忠耀
李娟
冯琛
LI Jin-ping CAO Gang-lin CAO Zhong-yao LI Juan FENG Chen(Western China En- ergy ＆ Environment Research Center, Lanzhou University of Technology, I.anzhou 730050, China Gansu Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou 73（3050, China China North- western Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzbou 730050, China)
出处
《中国沼气》
北大核心
2017年第2期90-95,共6页
China Biogas
基金
国家"863"计划课题(2014AA052801)
甘肃省杰出青年基金(2012GS05601)
兰州理工大学"红柳杰出人才计划"(Q201101)
甘肃省建设科技攻关项目(JK2010-29)
关键词
太阳能
增温保温
恒温厌氧发酵
solar energy
insulation system
temperature increase
anaerobic fermentation
waste heat from power generation
