Circulating fluidized bed gas generator system

Abstract

The invention discloses a circulating coal fluidized bed coal gas producer system, which is characterized by the following: comprising coal-gas producer, high temperature segregator, heat exchanger, low temperature segregator and exhaust heat boiler; arranging primary air port entered high temperature gasifying agents into the burner and at least a overfire air port on coal-gas producer; equipping circling coal inlet to enter circling coal into burner; connecting the primary air port and overfire air port with heat exchanger; connecting circulating coal inlet with high temperature segregator, low temperature segregator and heat exchange; proceeding twice air intake, twice coal intake and twice separation. This invention possesses low coal consumption, high heat value, high productive efficiency and low cost, which can make the temperature of gasifying agents reach 750-850 deg. c.

Description

technical field

[0001] The invention relates to a gas generator system, in particular to a circulating coal fluidized bed gas generator system. Background technique

[0002] In the prior art, the heat of the pulverized coal gasification gas generator is generally used to produce steam, and then steam and air are passed into the furnace as gasification agents to produce semi-water gas or water gas. Due to the large heat of gas, the amount of steam produced greatly exceeds the demand for the reaction of producing gas. Although the remaining steam can be used for other production steam, the coal consumption for gas production increases, and the coal consumption is 0.3Kg / Nm 3 ~0.4Kg / Nm 3 above.

[0003] In addition, the temperature of the gasification agent used in the prior art gas generator is generally 65°C to 120°C. When reacting in the furnace, the temperature of the gasification agent needs to rise to 1000°C to 1100°C, during which a large amount of reaction heat is con...

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