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化工学报  2015 

沼气调峰用LNG混空装置的设计与测试

DOI: 10.11949/j.issn.0438-1157.20150764, PP. 405-412

Keywords: 沼气,天然气,混合器,设计,实验验证

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Abstract:

针对沼气产气量不稳定的问题,提出了采用LNG气化掺混空气作为沼气调峰气源的解决方案,设计并加工了一种LNG引射空气混合器,模拟生产实际对引射混合器的运行特性进行了实验研究。结果表明在引射器出口压力一定时,混气比(空气:天然气)随着进口压力的增加而显著提升;进口压力一定时,混气比随着出口压力的增加而逐渐减小;考虑进出口压力对混气比的共同作用时,提高进口压力,混气比随出口压力升高而降低的趋势减缓;提高出口压力,混气比随进口压力升高而上升的趋势加剧。为获得与沼气发酵罐相同的出口压力,引射器进口压力应为0.25MPa。

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