Patent ID: 9126134
Filing Date: 2015-09-08
Classification: B01D,B01F

Abstract:
1. An exhaust gas separating tower, comprising: a washing section configured for washing an exhaust gas entering the tower with a cooling liquid so as to at least partially remove solid dust entrained in the exhaust gas, cool the exhaust gas, and condense at least a portion of moisture in the exhaust gas into liquid, the washing section comprising an exhaust gas inlet, an exhaust gas outlet arranged above the exhaust gas inlet, and a cooling liquid outlet for discharging the cooling liquid having washed the exhaust gas; a flash-distilling section arranged above the washing section and configured for flash-distilling the cooling liquid from the washing section to produce a cooled cooling liquid to be provided to the washing section and a cooling liquid vapor, the flash-distilling section comprising a cooling liquid inlet through which the cooling liquid from the washing section enters the flash-distilling section, a flash-distilling space for performing flash-distillation therein, and a vapor outlet through which the cooling liquid vapor is discharged; and a liquid seal means arranged between the flash-distilling section and the washing section, so that the cooled cooling liquid produced by flash-distillation is able to enter the washing section through the liquid seal means while the flash-distilling section is in gas-phase isolation from the washing section, wherein a pressure in the flash-distilling section is lower than that in the washing section.