大中型沼气工程增温及控制系统运行管理策略  

OPERATION AND MANAGEMENT STRATEGY OF CALESCENCE AND CONTROL SYSTEM IN MEDIUM AND LARGE-SCALE BIOGAS PROJECT

作　　者：常婧[1] 任绳凤[1] 管德星 

机构地区：[1]天津城建大学能源与安全工程学院,天津300384

出　　处：《太阳能学报》2017年第8期2077-2082,共6页Acta Energiae Solaris Sinica

基　　金：天津市科技支撑计划重点项目(13ZCZDNC01400);国家级星火计划(2013GA610005)

摘　　要：针对北方地区大中型养殖场沼气工程,制定一套发酵罐体增温及控制系统的运行管理策略,它分为供暖期与非供暖期两种模式。阐述两种系统的工作原理,对系统的热负荷、发电余热回收、沼气锅炉采暖及锅炉回水余热回收进行理论计算,并进行设备选型。计算可得:发酵系统平均每日热负荷为3.26 GJ,余热锅炉每日可提供的发电尾气余热回收量为3.64 GJ,发电量为1300 k Wh/d;通过板式换热器与沼气锅炉回水换热,每日集热量为4.41 GJ,可满足维持发酵罐体正常发酵温度的要求,从而保证厌氧发酵系统的稳定运行。Aiming at biogas project of medium and large scale farms in northern region, the operation and management strategy of calescence and control system for fermentation tank was designed for two different modes--heating period and non-heating period. Operating principles for two systems were elaborated. Furthermore, the thermal load of the system, waste heat recovery of power generation, heating of biogas boiler and waste heat recovery of boiler backwater were calculated theoretically, and the equipment selection was performed. The calculation results show that average daily thermal load of the fermentation system is 3.26 G J, the recycle quantity of generator＇ s waste heat provided by waste heat boiler is 3.64 GJ, and the daily power generation is 1300 kWh; biogas boiler backwater, the daily heat collection quantity is 4.41 normal temperature of the fermentation tank and ensure the stable Through the heat exchange of plate heat exchanger and GJ, which can meet the requirement of maintaining the operation of the anaerobic fermentation system.

关 键 词：发电余热 沼气锅炉 沼气 增温控制系统 管理策略 

分 类 号：TK6[动力工程及工程热物理—生物能]