基于振动混流原理的油页岩风选除尘技术研究

Experimental study on oil shale winnowing dust removal technology based on the vibration francis principle

为解决油页岩干馏后页岩油中粒径0.2 mm以下粉尘、杂质难分离而影响油品质的问题,试验利用风选选煤系统,对干馏前的油页岩进行风选除尘处理,通过调节风量大小以及更换风选筛网的形式,研究了不同条件下风选试验系统的除尘效果。试验结果表明:油页岩风选除尘试验系统能够完成选煤条件,除尘效率可达91%以上;风选效果因筛选条件不同而有所不同,在本试验条件下,筛网类型为10 mm×10 mm方孔筛,对应风量值为4 767.2 m^3/h时除尘效率达到最大值。

The mixture of-0.2 mm dust and impurities in shale oil which was prepared by destructive distillation method decreased the quality of shale oil.In order to resolve the problem,the pneumatic cleaning method was adopted to treat oil shale.The dust removal efficiency was investigated by adjusting wind volume and changing screen mesh. The results showed that,the dust removal efficiency could reach up to 91%.The dust removal efficiency was reached the maximum when the screen mash type was 10 mm×10 mm square,the wind volume was 4 767. 2 m^3/ h.