Multi-effect spray gasifier chilling device

Abstract

The invention relates to a multi-effect spray type gasifier chilling device, which includes a number of spray rings fixed inside the gasifier under the brick support plate or / and under the brick support flange, the outer wall of the spray ring is in contact with the brick support plate or / Contact with the flange of the supporting brick, use the flowing spray water to take away part of the heat, so that when the gasifier is running at high load or full load, the temperature of the supporting brick plate does not exceed the maximum operating temperature; The gradual expansion structure combined with the cylindrical structure in any way, the cross-sectional area of ​​the bottom of the downcomer is larger than the cross-sectional area of ​​the top, which can reduce the speed at which the synthesis gas enters the black water at the bottom of the gasifier, so as to reduce the amount of water carried by the synthesis gas; A number of water outlets are arranged, and the spray water is directed towards the direction of the downcomer, and the direction of the chilled water outlet of the chilling ring is also towards the downcomer, so as to enhance the cooling of the downcomer and reduce the occurrence of ablation and deformation of the downcomer; at the same time, through the counter spray It can greatly reduce the amount of water in the syngas, which is conducive to the stable operation of the gasifier at high load or full load.

Description

technical field [0001] The invention belongs to the technical field of coal-water slurry or dry coal powder or any other carbon-containing raw material gasification equipment, and in particular relates to a multi-effect spray type gasification furnace quenching device for cooling the synthesis gas of the gasification furnace. Background technique [0002] In the currently widely used pressurized entrained-bed refractory brick gasifier, coal-water slurry or dry coal powder undergoes gasification reaction in the combustion chamber of the gasifier, and the high-temperature and high-pressure syngas produced is rapidly cooled by the quenching water ejected from the quenching ring. Cooling, while entraining ash and slag along the downcomer in the quenching chamber of the gasifier into the black water at the bottom of the gasifier, the coarse slag is deposited at the bottom of the gasifier and discharged through the lock hopper. After further water bath dedusting and cooling, the s...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art, and propose a multi-effect spray type gasifier quenching device, which can effectively improve the water entrainment of syngas by changing the shape of the downcomer and improving the water outlet direction of the quenching ring. Combined with the addition of spray devices to cool the brick support plate, it can effectively and comprehensively solve the problems of syngas carrying water, brick support plate overtemperature and downcomer ablation deformation, and avoid the problem of gasifier load reduction or shutdown occur

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