CN104762201A - 基于cstr发酵装置的沼气资源化处理系统 - Google Patents
基于cstr发酵装置的沼气资源化处理系统 Download PDFInfo
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Abstract
本发明公开了一种基于CSTR发酵装置的沼气资源化处理系统,包括秸秆储存仓、快速降解罐、水解罐、独立换热器、CSTR一体化反应器、沼气纯化装置、叶面肥仓、沼液暂存池、固液分离器、有机肥仓;所述CSTR一体化反应器包括罐体、电机、反向搅拌装置和回流系统。本发明在CSTR一体化反应器中,增添了回流系统和反向搅拌装置可有效提高对碎秸秆和厌氧发酵液的搅拌效率,有助于提高秸秆产沼气的效率。同时本发明在出料口处增加螺旋桨,可快速将废料从罐体内排出。
Description
技术领域
本发明属于沼气制备技术领域,特别涉及一种基于CSTR发酵装置的沼气资源化处理系统。
背景技术
我国是一个农业大国,农作物播种面积居世界第一位,据统计,目前我国每年秸秆产量大约有7亿吨。在过去农作物秸秆多被作为燃料使用,但随着我国人民生活水平的不断提高,以及农村经济的发展和能源供应的改善,近些年来,农民对秸秆的燃烧利用也逐渐减少,剩余农作物秸秆的数量越来越大,据估计每年已达到4亿吨左右。大量剩余秸秆的随地堆弃和任意焚烧,造成了大气污染、土壤矿化、火灾事故、堵塞交通等大量的社会、经济和生态问题;与此同时,秸秆作为一种可再生能源,蕴含着巨大的生物质能量,它的资源化利用,对节约能源、改善生态环境、实现社会的可持续发展,有着重大意义。
秸秆干发酵产沼气是水稻、玉米、花生等农作物秸秆作为原料,经过粉碎并添加发酵菌剂做堆沤等预处理后,加入厌氧发酵装置中进行厌氧发酵来生产沼气和有机肥料,在工业生产中,通常采用CSTR反应器(continuous stirred tank reactor,即连续搅拌反应器系统)作为厌氧发酵装置来生产沼气,传统的厌氧发酵装置搅拌效率有待提高,搅拌效率的高低直接影响到秸秆的发酵效率和沼气的产气率;另外,当发酵完成后需要将废料从发酵装置内排出,由于废料具有一定粘性,因此废料不易排出且废料常常会黏在装置内壁。
发明内容
本发明的目的在于克服现有技术的不足,提供一种基于CSTR发酵装置的沼气资源化处理系统。
本发明采用以下技术方案来实现:
一种基于CSTR发酵装置的沼气资源化处理系统,包括秸秆储存仓、快速降解罐、水解罐、独立换热器、CSTR一体化反应器、沼气纯化装置、叶面肥仓、沼液暂存池、固液分离器、有机肥仓;秸秆储存仓连接快速降解罐;快速降解罐通过管道与水解罐连接;水解罐通过管道与独立换热器连接;独立换热器分别通过管道与CSTR一体化反应器和固液分离器连接;CSTR一体化反应器通过管道与沼气纯化装置连接;固液分离器通过管道与沼液暂存池连接;固液分离器通过管道与有机肥仓连接;沼液暂存池分别通过管道与水解罐和叶面肥仓连接。
所述CSTR一体化反应器包括罐体、电机、反向搅拌装置和回流系统。所述罐体的外壁设置有保温层,且在罐体外壁和保温层之间设置有加热层,加热层内设置有加热装置;罐体顶端设置有出气口;罐体底端设置有出料口;出料口处设置有螺旋桨,当发酵完成后,通过螺旋桨的搅动,可快速将废料从罐体内排出;罐体顶端设置有进料口;罐体内部设置有反向搅拌装置;所述电机设置在罐体的顶端,电机与反向搅拌装置连接,并驱动反向搅拌装置运动进行搅拌;罐体上设置有防爆口,防止发酵时罐体内的压力过大而发生爆炸;罐体上还设置有压力传感器和温度传感器,用于监控罐体内的压力和温度;所述回流系统包括回流出口、回流入口和循环泵,回流入口和回流出口之间通过管道连接,循环泵设置在回流入口和回流出口之间的管道上;回流出口设置在罐体的底端,回流入口设置在罐体的顶端。工作时,在循环泵的作用下,罐体内的发酵原料和发酵液从回流出口循环流入回流入口,有助于发酵原料和发酵液的充分搅拌。所述反向搅拌装置,包括行星轮系机构、轴、外搅拌叶、内搅拌叶;所述行星轮系机构由内齿圈、行星轮、行星架和太阳轮组成,行星轮系机构固定在轴上;所述内搅拌叶固定在轴上;所述外搅拌叶紧贴罐体内壁,且外搅拌叶的一端通过螺栓固定在内齿圈上,另一端通过轴套固定在轴的下端。
本发明在CSTR一体化反应器中,增添了回流系统和反向搅拌装置可有效提高对碎秸秆和厌氧发酵液的搅拌效率,有助于提高秸秆产沼气的效率。同时本发明在出料口处增加螺旋桨,可快速将废料从罐体内排出。
附图说明
图1是本发明的CSTR一体化反应器的结构示意图,
图2是CSTR一体化反应器的反向搅拌装置的结构示意图,
图3是图2的俯视图,
图4是反向搅拌装置的行星轮系机构的结构示意图,
图5是反向搅拌装置的行星轮系机构的结构简图,
图6是本发明的结构示意图。
图中:a为秸秆储存仓,b为快速降解罐,c为水解罐,d为独立换热器,e为CSTR一体化反应器,f为沼气纯化装置,g为叶面肥仓,h为沼液暂存池,i为固液分离器,j为有机肥仓,1为罐体,2为进料口,3为电机,4为出气口,5为防爆口,6螺旋桨,7为出料口,8为加热层,9为保温层,10温度传感器,11为压力传感器,12为行星轮系机构,12-1为内齿圈,12-2为行星轮,12-3为行星架,12-4为太阳轮,12-5螺栓,13为轴,14为外搅拌叶,15为内搅拌叶,16为轴套,17为回流出口,18为循环泵,19为回流入口。
具体实施方式
下面结合具体实施例进一步说明本发明的技术方案。
如附图6所示,本发明所涉及的一种基于CSTR发酵装置的沼气资源化处理系统,包括秸秆储存仓a、快速降解罐b、水解罐c、独立换热器d、CSTR一体化反应器e、沼气纯化装置f、叶面肥仓g、沼液暂存池h、固液分离器i、有机肥仓j;秸秆储存仓连接快速降解罐;快速降解罐通过管道与水解罐连接;水解罐通过管道与独立换热器连接;独立换热器分别通过管道与CSTR一体化反应器和固液分离器连接;CSTR一体化反应器通过管道与沼气纯化装置连接;固液分离器通过管道与沼液暂存池连接;固液分离器通过管道与有机肥仓连接;沼液暂存池分别通过管道与水解罐和叶面肥仓连接。
如附图1所示,所述CSTR一体化反应器包括罐体1、电机3、反向搅拌装置和回流系统。
所述罐体的外壁设置有保温层9,且在罐体外壁和保温层之间设置有加热层8,加热层内设置有加热装置;罐体顶端设置有出气口4;罐体底端设置有出料口7;出料口处设置有螺旋桨6,当发酵完成后,通过螺旋桨的搅动,可快速将废料从罐体内排出;罐体顶端设置有进料口2;罐体内部设置有反向搅拌装置;所述电机3设置在罐体的顶端,电机与反向搅拌装置连接,并驱动反向搅拌装置运动进行搅拌;罐体上设置有防爆口5,防止发酵时罐体内的压力过大而发生爆炸;罐体上还设置有压力传感器11和温度传感器10,用于监控罐体内的压力和温度。
所述回流系统包括回流出口17、回流入口19和循环泵18,回流入口和回流出口之间通过管道连接,循环泵设置在回流入口和回流出口之间的管道上;回流出口设置在罐体的底端,回流入口设置在罐体的顶端。工作时,在循环泵的作用下,罐体内的发酵原料和发酵液从回流出口循环流入回流入口,有助于发酵原料和发酵液的充分搅拌。
如图2至图5所示,所述反向搅拌装置,包括行星轮系机构12、轴13、外搅拌叶14、内搅拌叶15;所述行星轮系机构12由内齿圈12-1、行星轮12-2、行星架12-3和太阳轮12-4组成,行星轮系机构12固定在轴13上;所述内搅拌叶15固定在轴13上;所述外搅拌叶14紧贴罐体内壁,且外搅拌叶14的一端通过螺栓12-5固定在内齿圈12-1上,另一端通过轴套16固定在轴13的下端。
CSTR一体化反应器使用时,当原料从进料口进入罐体后,启动电机,电机带动轴以及固定于其上的内搅拌叶转动,与此同时,固定在轴上的太阳轮通过与之相互啮合的行星轮带动内齿圈反向转动,由于外搅拌叶固定内齿圈上,从而使外搅拌叶和内搅拌叶形成相互反向转动。使得在搅拌过程中,原料能在两个搅拌叶之间形成对流,以解决传统搅拌机搅而不拌的问题;同时,启动循环泵,在循环泵的作用下,罐体内的发酵原料和发酵液从回流出口循环流入回流入口,有助于发酵原料和发酵液的充分搅拌。另外对于粘性原料的搅拌,由于本发明的外搅拌叶紧贴罐体的内壁,使得粘性原料不会粘着在搅拌筒的内壁,有利于粘性原料的搅拌和排出。当发酵完成后,开启出料口处的螺旋桨,通过螺旋桨的搅动,可快速将废料从罐体内排出。
以上对本发明做了示例性的描述,应该说明的是,在不脱离本发明的核心的情况下,任何简单的变形、修改或者其他本领域技术人员能够不花费创造性劳动的等同替换均落入本发明的保护范围。
Claims (5)
1.一种基于CSTR发酵装置的沼气资源化处理系统,包括秸秆储存仓、快速降解罐、水解罐、独立换热器、CSTR一体化反应器、沼气纯化装置、叶面肥仓、沼液暂存池、固液分离器、有机肥仓;秸秆储存仓连接快速降解罐;快速降解罐通过管道与水解罐连接;水解罐通过管道与独立换热器连接;独立换热器分别通过管道与CSTR一体化反应器和固液分离器连接;CSTR一体化反应器通过管道与沼气纯化装置连接;固液分离器通过管道与沼液暂存池连接;固液分离器通过管道与有机肥仓连接;沼液暂存池分别通过管道与水解罐和叶面肥仓连接;其特征在于:
所述CSTR一体化反应器包括罐体、电机、反向搅拌装置和回流系统;所述罐体的外壁设置有保温层,且在罐体外壁和保温层之间设置有加热层,加热层内设置有加热装置;罐体顶端设置有出气口;罐体底端设置有出料口;出料口处设置有螺旋桨;罐体顶端设置有进料口;罐体内部设置有反向搅拌装置;所述电机设置在罐体的顶端,电机与反向搅拌装置连接;
所述回流系统包括回流出口、回流入口和循环泵,回流入口和回流出口之间通过管道连接,循环泵设置在回流入口和回流出口之间的管道上;
所述反向搅拌装置,包括行星轮系机构、轴、外搅拌叶、内搅拌叶;所述行星轮系机构由内齿圈、行星轮、行星架和太阳轮组成,行星轮系机构固定在轴上;所述内搅拌叶固定在轴上;所述外搅拌叶紧贴罐体内壁,且外搅拌叶的一端通过螺栓固定在内齿圈上,另一端通过轴套固定在轴的下端。
2.根据权利要求1所述的基于CSTR发酵装置的沼气资源化处理系统,其特征在于:所述罐体上设置有防爆口。
3.根据权利要求1所述的基于CSTR发酵装置的沼气资源化处理系统,其特征在于:所述罐体上设置有压力传感器和温度传感器。
4.根据权利要求1所述的基于CSTR发酵装置的沼气资源化处理系统,其特征在于:所述回流出口设置在罐体的底端。
5.根据权利要求1所述的基于CSTR发酵装置的沼气资源化处理系统,其特征在于:所述回流入口设置在罐体的顶端。
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