CN101804277B - 煤气过滤系统 - Google Patents

煤气过滤系统 Download PDF

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CN101804277B
CN101804277B CN2010101721038A CN201010172103A CN101804277B CN 101804277 B CN101804277 B CN 101804277B CN 2010101721038 A CN2010101721038 A CN 2010101721038A CN 201010172103 A CN201010172103 A CN 201010172103A CN 101804277 B CN101804277 B CN 101804277B
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CN101804277A (zh
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高麟
贺跃辉
汪涛
徐进辉
蒋敏
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Intermet Technology Chengdu Co Ltd
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Abstract

本发明公开了一种将煤炭气化后产生的煤气与粉尘分离的煤气过滤系统,可防止辅助过滤器的滤芯之间积聚过多粉尘,从而提高辅助过滤器的使用寿命。该煤气过滤系统,包括主过滤器以及连接在主过滤器粉尘出口端的粉尘冷却器,粉尘冷却器通过泄压管道连接具有滤芯的辅助过滤器,在辅助过滤器顶部连接有净化煤气排出管道以及反冲气管道,泄压管道的出口连接在辅助过滤器的侧面,在辅助过滤器底部与粉尘冷却器之间连接有排灰管道,在排灰管道上设置有排灰启闭阀门。能使大部分粉尘均沉积到辅助过滤器底部,反冲气体可轻易将少部分粉尘从滤芯之间清除并从排灰管道流回到粉尘冷却器内,从而大大提高了滤芯的使用寿命,适合在制备煤气的工艺系统中推广应用。

Description

煤气过滤系统
技术领域
本发明涉及一种过滤系统,具体涉及一种将煤炭气化后生成的煤气与粉尘分离的煤气过滤系统。
背景技术
目前,煤气的制备过程为:将煤通过高温高压气化后形成煤气与粉尘的混合物,然后通过主过滤器进行过滤,煤气从主过滤器的顶部煤气管道排走,粉尘从主过滤器底部排出到粉尘冷却器中,该粉尘冷却器一般具有多级并串联布置,使得粉尘进行逐级冷却后排出;但是,在粉尘排出到粉尘冷却器后,仍然在粉尘冷却器中存在部分的煤气,因此,为充分将煤气分离出来,在粉尘冷却器上通过管道连接有辅助过滤器,使得煤气通过该辅助过滤器过滤后排出。在辅助过滤器工作过程中,粉尘与煤气一同从辅助过滤器的底部进入,通过辅助过滤器的滤芯过滤,粉尘留在滤芯之间并填满滤芯,然后利用反充气管道将粉尘从滤芯内冲下脱离滤芯,并使粉尘从粉尘冷却器与辅助过滤器之间的管道排出到粉尘冷却器中。在该过程中,由于粉尘与煤气同时从辅助过滤器底部进入,使得粉尘与煤气在辅助过滤器中均往上运动,长期工作以后,导致在辅助过滤器的滤芯之间积聚粉尘过多,容易将滤芯之间的通道堵死,使得在反冲气进入辅助过滤器后,不易将粉尘从滤芯之间清除;同时,粉尘在滤芯之间的填塞分布不均匀,导致反冲气工作时,滤芯有的地方受力较大,有的地方受力较小,且粉尘与煤气均是高温,容易导致滤芯弯曲变形甚至折断,影响辅助过滤器的使用寿命。
发明内容
本发明所要解决的技术问题是提供一种可防止辅助过滤器的滤芯之间积聚过多粉尘的煤气过滤系统。
本发明解决其技术问题所采用的技术方案是:煤气过滤系统,包括主过滤器以及连接在主过滤器粉尘出口端的粉尘冷却器,粉尘冷却器通过泄压管道连接具有滤芯的辅助过滤器,在辅助过滤器顶部连接有净化煤气排出管道以及反冲气管道,泄压管道的出口连接在辅助过滤器的侧面,在辅助过滤器底部与粉尘冷却器之间连接有排灰管道,在排灰管道上设置有排灰启闭阀门。
进一步的是,在泄压管道上设置有泄压启闭阀门。
进一步的是,所述粉尘冷却器具有多个并串联设置。
本发明的有益效果是:由于在辅助过滤器与粉尘冷却器之间同时设置有泄压管道与排灰管道,且泄压管道的出口设置在辅助过滤器的侧面,可使得煤气与粉尘的混合物从泄压管道进入辅助过滤器时形成旋流状态,使大部分粉尘均沉积到辅助过滤器底部,而很少一部分粉尘经过辅助过滤器的滤芯进行过滤,从而可很好地防止在辅助过滤器的滤芯之间填塞过多的粉尘,反冲气管道内的反冲气体工作时,滤芯之间的粉尘阻力将大大减小,能很好地将粉尘从滤芯之间清除并从排灰管道流回到粉尘冷却器内,也就不会造成滤芯的弯曲变形甚至断裂,大大提高了滤芯的使用寿命;而排灰启闭阀门的设置,可在煤气与粉尘的混合物从泄压管道进入辅助过滤器时,将该排灰启闭阀门关闭,防止煤气与粉尘的混合物经排灰管道从辅助过滤器的底部进入,可防止辅助过滤器的滤芯之间填塞粉尘过多,适合在制备煤气的工艺系统中推广应用。
附图说明
图1为本发明的系统示意图。
图中标记为:主过滤器1、粉尘冷却器2、泄压管道3、辅助过滤器4、净化煤气排出管道5、反冲气管道6、排灰管道7、排灰启闭阀门8、泄压启闭阀门9。
具体实施方式
下面结合附图和实施例对本发明进一步说明。
如图1所示,本发明的煤气过滤系统,包括主过滤器1以及连接在主过滤器1粉尘出口端的粉尘冷却器2,粉尘冷却器2通过泄压管道3连接具有滤芯的辅助过滤器4,在辅助过滤器4顶部连接有净化煤气排出管道5以及反冲气管道6,泄压管道3的出口连接在辅助过滤器4的侧面,在辅助过滤器4底部与粉尘冷却器2之间连接有排灰管道7,在排灰管道7上设置有排灰启闭阀门8。由于在辅助过滤器4与粉尘冷却器2之间同时设置有泄压管道3与排灰管道7,且泄压管道3的出口设置在辅助过滤器4的侧面,在系统工作过程中,粉尘冷却器2中的煤气与粉尘经泄压管道3从辅助过滤器4的侧面进入,在辅助过滤器4内形成旋流状态,使得粉尘在辅助过滤器4内往下运动,而煤气则往上运动,在该过程中,大部分粉尘均沉积到辅助过滤器4底部,只要很少一部分粉尘经过辅助过滤器4的滤芯进行过滤,从而可很好地防止在辅助过滤器4的滤芯之间填塞过多的粉尘,则反冲气管道6内的反冲气体工作时,滤芯之间的粉尘阻力大大减小,能很好地将粉尘从滤芯之间清除并从排灰管道7流回到粉尘冷却器2内,也就不会造成滤芯的弯曲变形甚至断裂,大大提高了滤芯的使用寿命。排灰管道7上设置的排灰启闭阀门8,可在煤气与粉尘的混合物从泄压管道3进入辅助过滤器4时,将该排灰启闭阀门8关闭,防止煤气与粉尘的混合物经排灰管道7从辅助过滤器4的底部进入,即防止辅助过滤器4的滤芯之间填塞粉尘过多。
在上述实施方式中,为更好将粉尘清除,作为优选方式,在泄压管道3上设置有泄压启闭阀门9。则在粉尘冷却器2向辅助过滤器4排出煤气与粉尘的混合物时,该泄压启闭阀门9打开,而排灰启闭阀门8关闭,使煤气与粉尘的混合物从泄压管道3进入辅助过滤器4;而当反冲气体工作时,泄压启闭阀门9关闭,排灰启闭阀门8打开,使得反冲气体全部作用在辅助过滤器4的滤芯之间,利于将粉尘清除。
在以上的实施方式中,连接在主过滤器1粉尘出口端的粉尘冷却器2可仅设置一个,作为优选方式,所述粉尘冷却器2具有多个并串联设置。这样,可对高温的粉尘进行逐级冷却,提高粉尘冷却器2的使用寿命。

Claims (3)

1.煤气过滤系统,包括主过滤器(1)以及连接在主过滤器(1)粉尘出口端的粉尘冷却器(2),粉尘冷却器(2)通过泄压管道(3)连接具有滤芯的辅助过滤器(4),在辅助过滤器(4)顶部连接有净化煤气排出管道(5)以及反冲气管道(6),其特征是:泄压管道(3)的出口连接在辅助过滤器(4)的侧面,在辅助过滤器(4)底部与粉尘冷却器(2)之间连接有排灰管道(7),在排灰管道(7)上设置有排灰启闭阀门(8)。
2.如权利要求1所述的煤气过滤系统,其特征是:在泄压管道(3)上设置有泄压启闭阀门(9)。
3.如权利要求1或2所述的煤气过滤系统,其特征是:所述粉尘冷却器(2)具有多个并串联设置。
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CN103657270B (zh) * 2012-09-19 2015-06-10 中国石油化工集团公司 一种固体进出料高温变压设备充泄压过滤系统及过滤方法
CN114870532B (zh) * 2022-05-23 2023-08-04 成都易态科技有限公司 卸灰平衡装置以及过滤器

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