Novel entrained-flow bed gasification furnace radiation waste boiler and heat recovery system thereof

Abstract

The utility model discloses a novel entrained-flow bed gasification furnace radiation waste heat boiler which comprises a radiation waste heat boiler body, a cylindrical water cooling wall is arranged in the radiation waste heat boiler body, a radiation cooling space is arranged on the upper portion of the water cooling wall, and a plurality of groups of radiation heat exchange screens are further arranged in the radiation waste heat boiler body. The multiple sets of radiation heat exchange screens are distributed at equal intervals along the circumferential inner wall of the radiation waste boiler body. The utility model further discloses a heat recovery system of the novel entrained-flow bed gasification furnace radiation waste heat boiler, the heat recovery system comprises the novel entrained-flow bed gasification furnace radiation waste heat boiler, a saturated steam pocket and a superheated steam pocket, the saturated steam pocket is connected with a water cooling pipe through a pipeline, and the superheated steam pocket is connected with a steam pipe through a pipeline. Sufficient radiation heat exchange is achieved in the top radiation cooling space, the cooling speed of slag particles can be increased, the energy efficiency of a gasification system is improved, the problem that a large number of particles are deposited on a heat exchange screen is solved, the slag bonding phenomenon is avoided, the slag blocking risk is reduced, and cost is low.

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