The existing process scheme to treat nitric acid tail gas from the washing stage of acrylon filature components in acrylon chemical Plant of Fushun Petrochemical Company was analyzed.

There always was much coherent sludge sediment in the blast furnace gas washing water pipe and the pipe became narrow in Hongfa iron making plant of Jiangsu Shagang group.

The coal washing plant steam boiler with high and new technology can effectively avoid the back wall by high temperature gas scour damage, safe and reliable to use.