Carbonaceous organic material pressurized-gasification solid wet deslagging device and method

Abstract

The invention relates to a carbonaceous organic material pressurized-gasification solid wet deslagging device comprising an upper slag bucket and a lower slag bucket, wherein the top end of the upper slag bucket is provided with a high-temperature ash inlet pipe (17); a jacket pipe (1) is arranged outside the high-temperature ash inlet pipe (17) and provided with a water or low-temperature gas inlet (2); the lower end of the annular gap of the jacket pipe (1) is open; the middle of the upper slag bucket is provided with an upper slag bucket temperature measuring port (6), a liquidometer upper mounting port (3), a liquidometer lower mounting port (5) and a high-pressure water overflow port (4); the high-pressure water overflow port (4) is lower than the liquidometer upper mounting port (3); the lower part of the upper slag bucket is provided with a high-pressure water inlet (7) and a circulating water inlet (8); the bottom of the upper slag bucket is provided with an upper slag bucket slag drop pipe (18) which is provided with a loose water inlet (9); a lower slag bucket upper valve (10) is connected with the upper slag bucket slag drop pipe (18) and a lower slag bucket slag drop pipe (13); the lower slag bucket slag drop pipe (13) is positioned in the middle of the top of the lower slag bucket; two sides of the lower slag bucket slag drop pipe (13) at the top of the lower slag bucket are provided with a pressure measuring port (11) and a depressurizing port (12); the upper part of the lower slag bucket is provided with a lower slag bucket pressurizing water inlet (14) and a circulating water outlet (19); the middle of the lower slag bucket is provided with a lower slag bucket temperature measuring port (15); and the bottom of the lower slag bucket is provided with a lower slag bucket lower valve (16). The invention has the advantages of simple structure, low maintenance amount, long operation cycle and friendly operating environment.

Description

technical field [0001] The invention relates to a solid-state wet slag discharge device and method for pressurized gasification of carbon-containing organic matter, in particular to a cooling and discharge device and method for high-temperature and high-pressure ash during the solid-state slag discharge gasification process. Background technique [0002] Coal gasification technology is widely used in chemical industry, metallurgy, machinery, building materials and civil gas, etc., and is the leading technology in these industries. [0003] Coal gasification technology can be divided into three categories according to the movement state of raw coal in the gasifier: moving bed, fluidized bed and entrained bed. In the fixed bed, the block coal and the gasification agent are added in reverse. After the carbon and other organic matter in the coal are gasified, the ash will be discharged from the bottom of the furnace. Discharge in solid state, if the ash and slag flow out in a l...

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Problems solved by technology

[0004] For fixed bed and fluidized bed gasification processes, there are many problems in the existing high-temperature solid-state dry slagging method, which seriously affect the long-term operation of the gasifier: 1) The high-temperature solid material is cooled by gas, which is only suitable for fixed-bed gasification The process is not suitable for fluidized bed; fluidized bed generally adopts water-cooled screw machine, but for large slag discharge, due to indirect heat exchange, a large heat exchange area is required, so multi-stage series connection has to be used, the equipment is complicated, and the mechanical transmission parts It is also easily damaged; 2) For the high-pressure dry slag discharge lock hopper, a large amount of high-pressure gas (nitrogen or CO 2 and other gases), and the dust entrained in the discharge gas during the decompression process causes wear and tear on pipes and valves, and the exhaust gas contains combustible gases and sulfides, which can cause environmental pollution; Severe dust

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