Gasification technology burner protection device and protection method

Abstract

The invention belongs to a gasification technology burner protection device and a protection method. The gasification technology burner protection device comprises a gasification furnace, wherein a plurality of technology burner chambers are arranged at the upper part of the gasification furnace; each technology burner chamber is internally provided with a gasification technology burner and is connected with the gasification technology burner; a crude synthetic gas outlet is formed in the bottom of the gasification furnace; the crude synthetic gas outlet is connected with a CO2 absorption tower through a conversion furnace; the CO2 absorption tower is connected with a CO2 gas inlet hole through a CO2 resolving tower, a CO2 compressor, a first filter, a second filter, a heat exchanger and a regulating valve in sequence; the gasification technology burner comprises a technology burner body with a coal slurry and oxygen channel; a technology burner flange disc is adaptive to a flange at the end part of each technology burner chamber; the CO2 gas inlet hole is formed in the radial direction of an annular gasket. The gasification technology burner protection device has the advantages that the structure is simple, a technology design is reasonable, a thermal stress self-compensation space of the technology burner and a cooling water coiled pipe is established, relatively great thermal stress of the technology burner and the cooling water coiled pipe is prevented, the abrasion of the technology burner is reduced and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of protective gasification process burner devices, and in particular relates to a protective gasification process burner device and a protection method. Background technique [0002] The coal gasification process burner is one of the very important production devices in coal chemical enterprises. In the actual production process, the service life of the process burner will be shortened due to various reasons that are unfavorable to the process burner. Generally, the gasification process burner The replacement cycle is 2 months. This not only delays the production time due to the replacement of the process burner in the production process, but also affects the production economy of the enterprise to some extent. At present, the problem of short service life of process burners in China is still a difficult problem in the industry. Most of them have the following problems: a. The front end of the oxygen nozzle...

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Problems solved by technology

[0002] The coal gasification process burner is one of the very important production devices in coal chemical enterprises. In the actual production process, the service life of the process burner will be shortened due to various reasons that are unfavorable to the process burner. Generally, the gasification process burner The replacement cycle is 2 months

This not only delays the production time due to the replacement of the process burner in the production process, but also affects the production economy of the enterprise to some extent

At present, the problem of short service life of process burners in China is still a difficult problem in the industry. Most of them have the following problems: a. The front end of the oxygen nozzle outside the process burner faces the high-temperature process gas and secondary combustion particles in the gasifier. Under certain conditions, the alternation of oxidizing and reducing gases, as well as the wear of solids, the ablation phenomenon of the process burner will be more obvious, and the service life will be seriously reduced; b. There will be ash accumulation in the gasifier chamber in the nozzle chamber, and the ash accumulated in the process burner chamber will wear the process burner; at the same time, the accumulation of ash will reduce or lose the free volume in the process burner chamber, and the process burner The deformation of the nozzle and the cooling water coil due to the temperature difference is limited by the space, and the thermal stress cannot be compensated by itself, which makes the process burner more likely to be damaged; c. The raw material used for coal-water slurry gasification is coal slurry made of coal, and the coal slurry contains The wear of the process burner nozzle by the solid particles is inevitable, effectively prolonging the damage time of the process burner due to ablation is the key to prolonging the life of the process burner

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