Outlet of admixture of hot gas and grains of liquid dregs

Abstract

This invention discloses an exit of a mixture of hot gas and liquid slag granules. The exit has a serpentine-pipe water-cooling wall. The cooling medium in the serpentine pipe enters from the bottom and exits from the top. The inner surface of the water-cooling wall is coated with a layer of refractory casting material. During the working process, part of liquid slag granules form a solid slag layer and a liquid slag layer at the inner side of the refractory casting material, while hot gas and the rest slag exit through the center. The cross section of the exit tunnel is circular. The longitude section of the exit is X-shape, the furl angle alpha is 80-120 deg., and the expanding angle beta is 30-60 deg. The exit has such advantages as good heat resistance, long service life, low blockage probability, simple and tight structure, and wide applications.

Description

technical field [0001] The invention relates to a mixture discharge port, in particular to a mixture discharge port for discharging high-temperature synthesis gas and liquid slag particles which are produced by using pulverized coal as fuel. Background technique [0002] Among the existing coal gasification technologies, Texaco and Shell are more mature and have been applied by many domestic manufacturers. Both have their own characteristics in the design of the discharge port. Among them, the synthesis gas and slag of the Texaco gasifier are discharged from the discharge port at the bottom of the gasification chamber, and both the gasification chamber and the discharge port are lined with refractory bricks to withstand the high temperature in the gasification chamber. This structure brings limitations to the Texaco gasifier: refractory bricks are easily eroded by the multiphase material flow involved in the gasification reaction under high temperature conditions, and it tak...

AI Technical Summary

Problems solved by technology

The gas slag separation and discharge method is determined by the special furnace body structure of the Shell gasifier. The gasification process is completed by 4 to 8 burners arranged in the middle and lower part of the furnace body to form opposing flames in the furnace. The product synthesis gas Use its own buoyancy to discharge from the upper part, and liquid slag to be discharged from the lower part by gravity. This method is not suitable for all furnace types, especially not suitable for the furnace type with the burner on the top and the synthesis gas and liquid slag are mixed and discharged.

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