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达禹环境-环保百科 当前位置: 达禹环境 > 环保百科 > 中德沼气工程发展过程比较分析
中德沼气工程发展过程比较分析
时间 : 2019-08-24 浏览量 : 8

在化石能源日渐匮乏的今天,能源紧张已成为  全球重大问题。为缓解能源压力,世界各国积极将  能源发展转至可再生资源领域。沼气作为安全稳定的可再生能源在全球得到了快速发展。虽然沼气工程彩经网在中国受到了极大的重视,取得了迅速的发展,但也存在着沼气产品补贴力度不够、沼气配套技术、沼气行业产业化和规范化程度低等问题。德国是当今沼气工程技术发展和实践应用最成功的国家


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出我国沼气工程主要用于处理农业废弃物和净化生  活污水,较少用于处理工业废弃物。表5显示出我  国从2000年-2016年农村户用沼气池的数量上增  长了约5.5倍,并且存在新增量、报废量、户用沼气  利用量和总产气量均较大,年户均产气量较低的特  点。截至2015年底,中小型沼气工程有103898处,  大型沼气工程6737处,特大型沼气工程34处,以秸  秆为主要原料的沼气工程有458处,以畜禽粪污为主要原料的沼气工程110170。至2012年底,我国沼气工程装机容量达165731KW,年发电量达43280.02万KW·h

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3.2.2中国发酵工艺及技术发展  与德国不同的是,我国沼气工程对常规、高效的  厌氧发酵工艺都有所应用。从发酵技术上来看,秸


秆高效厌氧发酵固态化学预处理技术、秸秆及畜禽  粪便干发酵技术、有机废弃物一体化两相发酵技术尚处于示范阶段,粪便厌氧发酵除沙技术、沼气发酵功能微生物强化技术均在实际的沼气工程中得到了推广应用。表6显示了我国典型的沼气工程案例,可见我国沼气工程的发酵工艺选择主要根据发酵原料,不同的技术指标,实现对不同原料的资源化利用。在沼气工程自动化控制程度上,由于研发人  员比较重视厌氧消化工艺本身的研究开发,忽视了  配套设备的研制与引入,因此自动化程度较低2。  从我国近几年沼气热电联产相关报道可知,我  国沼气发电机热电联产效率在20%-30%3。  国家现阶段也开始大力发展沼气热电联产,其中国  家能源局出台了“关于开展‘百个城镇’生物质热电  联产县域清洁供热示范项目建设的通知”,为探索  生物质发电全面转向热电联产、完善生物质热电联产政策措施提供依据。


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山东达禹环境工程有限公司已在沼气工程领域深耕十年,有着丰富的行业经验,生产各种沼气设备,承接大中小各种规模的沼气工程,承建黑膜沼气池红泥膜沼气池等各种软体沼气池及双膜气柜、集雨窑等,同时生产加工各类液袋水囊、桥梁预压水袋、森林消防水袋、可拆卸游泳池等,欢迎新老客户洽谈合作,共谋发展!