Process for improving the bunkerability of coal
阅读：64发布：2021-11-19
专利汇可以提供Process for improving the bunkerability of coal专利检索，专利查询，专利分析的服务。并且This invention relates to the treatment of a coal slurry and particularly to the adiabatic flashing of the coal slurry solids removed from a centrifuge to effect a reduction in the moisture content present before the coal is sent to the pulverized coal mill or cyclone burner to improve the bunkerability of the solids.，下面是Process for improving the bunkerability of coal专利的具体信息内容。
1. A PROCESS FOR IMPROVING THE BUNKERABILITY OF COAL WHICH HAS BEEN TRANSPORTED AS A COAL SLURRY, COMPRISING THE STEPS OF HEATING THE SLURRY TO A TEMPERATURE OF ABOUT 190*F, MECHANICALLY DEWATERING THE SLURRY TO PRODUCE A HEATED CAKE, ADIABATICALLY FLASHING THE HEATED CAKE TO REDUCE THE TEMPERATURE THEREOF TO ABOUT 100*F, CONTACTING THE CAKE WITH A PURGE GAS AND REDUCING THE SURFACE MOISTURE OF THE CAKE TO BETWEEN ABOUT 5% AND ABOUT 8%.
2. A process as in claim 1 including the step of sweeping the cake with hot steam from an external source to aid the flashing operation, more than half of the dryer load being due to the sensible heat in the cake.
3. A process as in claim 1 wherein the coal slurry is mixed with a heavy hydrocarbon before being heated, the hydrocarbon having a viscosity at 190*F. of less than 3 centipoises and at 60*F. of greater than 12 centipoises.
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