Gasifying furnace for synthetic gas from coal

Abstract

The invention discloses a gasifying furnace for synthetic gas from coal. The gasifying furnace comprises a jetting fluidized bed reaction unit, a semi-coke reaction unit and a slag storage unit. The jetting fluidized bed reaction unit comprises a jetting fluidized bed reaction unit body, a gas distribution plate, a coal inlet, a fluidizing gas inlet, a semi-coke outlet and a synthetic gas outlet, wherein a gas inlet chamber is arranged below the gas distribution plate, and the coal inlet, the fluidizing gas inlet, the semi-coke outlet and the synthetic gas outlet are formed in the jetting fluidized bed reaction unit body. The semi-coke reaction unit comprises a semi-coke reaction unit body, a semi-coke inlet, a steam inlet, a secondary fuel inlet and a melt outlet, wherein the semi-coke inlet, the steam inlet, the secondary fuel inlet and the melt outlet are formed in the semi-coke reaction unit body. The slag storage unit is provided with a melt inlet and a slag discharging outlet, wherein the melt inlet is connected with the melt outlet. The gasifying furnace has the advantages of high operation pressure, great loading and unloading capacity and the like and can substantially improve the conversion rate of carbon, so high yield of synthetic gas is realized.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, in particular, the invention relates to a gasifier for coal-to-synthesis gas. Background technique [0002] Because the operating temperature of traditional fluidized bed gasifier is lower than the ash melting point of coal, the coal with poor gasification reaction activity has a low carbon conversion rate in the fluidized bed gasifier, and the material cannot be fully utilized and converted. . Moreover, traditional fluidized bed gasifiers generally use dry slagging. At present, it is difficult to operate the dry slagging device under high pressure, which results in low operating pressure of the gasifier and limits the production capacity of the gasifier. [0003] Therefore, the existing coal-to-synthesis gas gasifier needs to be further improved. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to...

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Problems solved by technology

[0002] Because the operating temperature of the traditional fluidized bed gasifier is lower than the ash melting point of coal, the coal with poor gasification reaction activity has a low carbon conversion rate in the fluidized bed gasifier, and the material cannot be fully utilized and converted.

Moreover, traditional fluidized bed gasifiers generally use dry slagging

At present, it is difficult to operate the dry slagging device under high pressure, resulting in low operating pressure of the gasifier, which limits the production capacity of the gasifier

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