沼液余热回收对高温发酵沼气工程净产气率的影响

被引：34

作者：

花镜

滕子言

陆小华

杨祝红

王昌松

机构：

[1] 南京工业大学材料化学工程国家重点实验室

来源：

化工学报 | 2014年 / 65卷 / 05期

关键词：

厌氧; 生物能源; 甲烷; 沼气; 高温发酵; 净产气率; 余热回收;

D O I：

暂无

中图分类号：

S216.4 [沼气];

学科分类号：

090302 [植物营养学];

摘要：

以瑞典Alviksg?rden养猪场高温发酵沼气工程为分析对象,通过传热模型计算发酵罐加热负荷,通过与江苏金坛永康农牧养猪场同等规模的中温发酵沼气工程对比,讨论高温发酵的容积产气率和余热回收对沼气工程净产气率的影响。结果表明虽然瑞典Alviksg?rden养猪场高温发酵沼气工程的加热能耗是江苏金坛永康农牧养猪场中温发酵沼气工程的2.1倍,但由于产气速率达到2.3 m3·m-3·d-1,增产的沼气量远远大于增温的能耗;若进一步在瑞典Alviksg?rden养猪场沼气工程中增加余热回收,可将沼气净产气率从82%提高至90%。相对于提高容积产气率,采用余热回收技术对降低高温发酵沼气工程的增温能耗、提高净产气率效果更加显著。

引用

页码：1888 / 1892

页数：5

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