The invention discloses a horizontal
coal gas gasifier and a gasification method thereof, and relates to the field of
clean coal gasification. According to the horizontal gas gasifier and the gasification method thereof, the horizontal gasifier comprises a gasification
reaction chamber, a gas-
slag separation section and a
slag pool which are sequentially arranged from top to bottom, burner channels are symmetrically arranged on the two sides of the gasification
reaction chamber, pulverized
coal is introduced into the burner channels for incomplete
combustion, and high-temperature
coal gas and
slag generated by gasification reaction enter the gas-slag separation section from a slag discharging opening; a membrane type
water cooling wall is vertically arranged in the middle of the gas-slag separation section, low-temperature
coal gas enters the gas-slag separation section from a chilling ring arranged on the upper portion of the membrane type
water cooling wall, the temperature of the high-temperature
coal gas is reduced to be below the ash
melting point of slag, the slag is solidified into
solid slag, the
coal gas and the
solid slag are subjected to gas-slag separation at the bottom, the slag falls into the slag
pool, coal gas enters a subsequent
system from the coal gas outlet in the upper portion, the horizontally-arranged gasification
reaction chamber and the membrane type
water cooling wall are adopted to play a baffling role, and then the overall height of the gasifier is greatly reduced.