Lignite dry distillation and gasification furnace provided with annular fire grate

Abstract

The invention relates to the field of lignite dry distillation and gasification, in particular to a lignite dry distillation and gasification furnace provided with an annular fire grate. The lignite dry distillation and gasification furnace comprises a water jacket, an outer water cooling wall, an inner water cooling wall, a hearth, a furnace frame, furnace legs, a water inlet, a water inlet flange pipe, a water outlet, a water outlet flange pipe, a feed port, a feed port flange pipe, a diffusing port, a diffusing port flange pipe, a fuel gas outlet, a fuel gas outlet flange pipe, a fuel gas burner, an air port flange pipe, a fuel gas port flange pipe, an annular fuel gas pipe, a fuel gas inlet, a fuel gas inlet flange pipe, a water seal plate ring, a coke discharging guide plate and the like, wherein the water jacket is formed by the outer water cooling wall, the inner water cooling wall and the water seal plate ring; a coke discharging disc water seal tank, a coke discharging tower and a paddle type discharger are arranged at the upper part of a water seal type coke discharging disc; a driven gear ring, a coke discharging disc support, a support roller assembly, a driving gear, a speed reducer, a coupling and a motor are arranged at the lower part. The lignite dry distillation and gasification furnace provided with the annular fire grate has the benefits as follows: the furnace body structure is simple and compact, and lignite can be subjected to quality improvement to form clean fuel including lignitous coal and lignite gas.

Description

technical field [0001] The invention relates to the field of lignite dry distillation gasification, in particular to an annular grate lignite dry distillation gasifier. Background technique [0002] Lignite is a kind of mineral coal with the lowest degree of coalification. It has high water content, high volatile components, high sulfur and phenol content, and is easy to weather and fragment in the air. If it is directly used as fuel, the environmental risk is relatively large, so the market of lignite is also limited. At present, lignite upgrading methods are mainly used as fuel for power plants after drying and dehydration; lignite carbonization is used as chemical raw materials, catalyst carriers, adsorbents, sewage purification and metal recovery, etc.; lignite coking is used to make briquettes for cooking and heating . The equipment used is a drum dryer, a gas generator, a fluidized bed furnace and a carbonization kiln. Contents of the invention [0003] The purpos...

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Problems solved by technology

[0002] Lignite is a kind of mineral coal with the lowest degree of coalification. It has high water content, high volatile components, high sulfur and phenol content, and is easy to weather and fragment in the air. Directly used as fuel, the environmental risk is relatively high, so the market of lignite is also limited

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