两级串联卧螺离心机用于飞灰水洗料浆固液分离试验研究  

STUDY OF SOLID-LIQUID SEPARATION TEST ON FLY ASH WATER SLURRY USING TWO-STAGE SERIES DECANTER CENTRIFUGE

作　　者：朱延臣[1] 顾军[1] 张国亮[2] 蔡文涛[1] 练礼财 

机构地区：[1]北京建筑材料科学研究总院固废资源化利用与节能建材国家重点实验室,北京100041 [2]北京市琉璃河水泥有限公司,北京102403

出　　处：《环境工程》2015年第9期121-124,共4页Environmental Engineering

摘　　要：采用两级串联卧螺离心机对飞灰水洗料浆进行现场固液分离试验,研究了转鼓转速、差转速和溢流半径等对分离效果的影响,选择并确定了合适的操作参数,通过长时间连续运行试验,分离后平均泥饼含水率为39.8%,平均滤液含渣率为0.6%,平均固相回收率达98.1%,分离效果明显优于真空过滤机,且卧螺离心机运行平稳,未出现异常,因此两级串联卧螺离心机可完全代替真空过滤机。A solid-liquid separation test on fly ash water slurry was conducted by using two-stage series decanter centrifuge.Firstly,the effects of drum rotating speed,differential rotating speed and radius on the separation were studied and the appropriate operating parameters were determined. Through continuous operation test for a long time,the results showed that the average moisture content of mud cake was 39. 8%,the average filtrate cinder rate was 0. 6%,and the average solid phase recovery rate was 98. 1%. The separation effect was superior to that of the vacuum filter. In addition,the decanter centrifuges ran stably,and the result was satisfying. The test showed that two-stage series decanter centrifuge could completely replace the vacuum filter.

关 键 词：两级 卧螺离心机 飞灰 固液分离 

分 类 号：X773[环境科学与工程—环境工程]