APPARATUS FOR TREATING FLY ASH AND DRAIN WATER OF NON-SLAGGING GASIFIER AND METHOD THEREOF

摘要

The present invention relates to an apparatus and method for treating a fly ash and discharge water of a non-melting gasifier, which, during gasification in an entrained-flow gasifier using non-melting technique, are capable of reducing a dust load in a dust collector by treating some heavy fly ash using a coolant of a quencher and recirculating the coolant to the gasifier without releasing a stinking gas into the atmosphere by separating a hydrogen sulfide gas into a liquid phase and a gas phase, wherein the hydrogen sulfide gas is discharged together with a coolant discharged from the quencher of the gasifier operated under a high pressure. More particularly, the present invention relates to an apparatus and method for treating a fly ash and discharge water of a non-melting gasifier, which includes: a circulation line resupplying, to the non-melting gasifier, the coolant discharged from the quencher of the non-melting gasifier, in which an ash is generated in a form of the fly ash, and having a opening/closing valve and a pump for transferring the coolant; a hydrocyclone installed on the circulation line and separating the fly ash collected in the coolant supplied from the quencher; a gas separator installed on the circulation line to be placed downstream of the hydrocyclone, and separating the hydrogen sulfide gas contained in the coolant; a gas combustion unit combusting the hydrogen sulfide gas separated by the gas separator; and a storage tank installed on the circulation line to be placed downstream of the gas separator, and storing the coolant circulating through the circulation line.