TREATMENT PROCESS FOR LIGNITE UPGRADING WASTE WATER AND LIGNITE UPGRADING SYSTEM

摘要

A treatment process for lignite upgrading waste water comprises: delivering exhaust gas with high content of steam, which is generated in a lignite upgrading process, to a combustor to be incinerated, and then delivering the exhaust gas together with heat-conducting media into a heat-conducting medium inlet of a lignite upgrading device. Also provided is a lignite upgrading system. In the process, contaminant is innocent treated by high-temperature incineration before the waste water is generated. The treatment process is simple, less equipment is involved, and treatment cost is low.