Leakage faults have successively occurred on flame-isolating cover of the burning-nozzle used for imported pulverized coal gasification equipment.From analysis

it is believed that the unresonable cooling water system for said flame-isolating cover is one of the causes leading to leakage.For this

directing against operating features of steam/water system of the gasifier

a new scheme for cooling the flame-isolating cover

in which the cooling water is separated from steam/water system of the gasifier and lower temperature cooling water being used as cooling medium

has been put forward

and new flow process of cooling water for the flame-isolating cover being designed.The new scheme has low invested capital

and maintains integrity of the original steam/water system of gasifier

providing reference for designing similar equipment.