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Liquid continuous slag-removal fixed bed gasification furnace and gasification method thereof

A fixed bed gasifier, liquid technology, applied in chemical instruments and methods, gasification process, gasification device details, etc., can solve the problem of high cost of coal water slurry

Active Publication Date: 2015-02-04
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this measure solves the problem of environmental protection, the cost of coal-water slurry in the transportation process is relatively high

Method used

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  • Liquid continuous slag-removal fixed bed gasification furnace and gasification method thereof
  • Liquid continuous slag-removal fixed bed gasification furnace and gasification method thereof
  • Liquid continuous slag-removal fixed bed gasification furnace and gasification method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] The gasifier used in the test has an inner diameter of 2.0m and four nozzles. The effective volume of the gasification chamber is 30m 3 , the height-to-diameter ratio is 6, the nozzles are evenly arranged in the circumferential direction of one layer, the axial deflection angle α is 19°, and the vertical distance from the intersection of the extension lines of the nozzles to the slag discharge port at the upper end of the slag discharger is 0.2 times the diameter of the furnace body. The furnace lining in the upper area of ​​the furnace body has a two-layer structure, the outer layer is a jacket, and the inner layer is clay bricks. The furnace lining in the lower area has a four-layer structure, the outer layer is a jacket, and the inner layer is a ramming material layer, a water wall, and a refractory material layer. Among them, the water-cooled wall is assembled in blocks, consisting of 8 water-cooled walls. The wall thickness of the water-cooled wall is 150mm, and t...

Embodiment 2

[0132] The gasifier used in the test has an inner diameter of 3.6m and six nozzles. The effective volume of the gasification chamber is 180m 3 , the height-to-diameter ratio is 5, the nozzles are evenly arranged in the circumferential direction of one layer, the axial deflection angle α is 19°, and the vertical distance from the intersection of the extension lines of the nozzles to the slag discharge port at the upper end of the slag discharger is 0.1 times the diameter of the furnace body. The furnace lining in the upper area of ​​the furnace body has a two-layer structure, the outer layer is a jacket, and the inner layer is clay bricks. The furnace lining in the lower area has a four-layer structure, the outer layer is a jacket, and the inner layer is a ramming material layer, a water wall and a refractory material layer. Among them, the water cooling wall is assembled in blocks, a total of 12 pieces, the thickness of the water cooling wall is 150mm, the height is 1850mm, a...

Embodiment 3

[0155]The gasifier used in the test has an inner diameter of 5.0m and eight nozzles. The effective volume of the gasification chamber is 450m3, the height-to-diameter ratio is 5, the nozzles are evenly arranged in the circumferential direction of one layer, the axial deflection angle α is 19°, and the vertical distance from the intersection of the nozzle extension lines to the slag discharge port at the upper end of the slag discharger is 0.1 times furnace diameter. The furnace lining in the upper area of ​​the furnace body has a two-layer structure, the outer layer is a jacket, and the inner layer is clay bricks. The furnace lining in the lower area has a four-layer structure, the outer layer is a jacket, and the inner layer is a ramming material layer, a water wall and a refractory material layer. Among them, the water cooling wall is assembled in blocks, a total of 18 pieces, the thickness of the water cooling wall is 150mm, and the height is 1850mm. The water cooling wall...

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Abstract

The invention relates to a liquid continuous slag-removal fixed bed gasification furnace and a gasification method thereof, the liquid continuous slag-removal fixed bed gasification furnace is characterized in that: the liquid continuous slag-removal fixed bed gasification furnace from top to bottom in turn comprises a raw material bin, a material lock hopper, a furnace body, a plurality of gasification agent nozzles, a slag-removal device, a molten slag quenching chamber and a slag lock; the raw material bin is funnel-shaped, the lower end of the raw material bin is in fastening connection with the upper end of the raw material lock hopper; the raw material lock hopper is in fastening connection with an upper end port of the furnace body, the upper part of the furnace body is provided with a crude gas outlet, the furnace body inner wall located below the crude gas outlet is provided with a layer of furnace lining; the plurality of gasification agent nozzles are in fastening connection with the lower part of the furnace body and are arranged uniformly along the circumferential direction of the furnace body, the outlet of each gasification agent nozzle passes through the furnace body furnace wall and the furnace lining and extends into the furnace body; the slag-removal device is installed in the furnace body located below the furnace lining, the lower end of the furnace body is in fastening connection with the upper end of the molten slag quenching chamber, and the lower end of the molten slag quenching chamber is in fastening connection with the upper end of the slag lock. The gasification agent nozzles adopt a single channel structure only conveying a gasifying agent, the service life of the gasification agent nozzles is improved, and an overflow type slag pool can effectively ensure the smooth slag removal, and improves the operation efficiency of the fixed bed molten slag gasification furnace.

Description

technical field [0001] The invention relates to a gasification furnace and a gasification method thereof, in particular to a liquid continuous slagging fixed-bed gasification furnace and a gasification method thereof. Background technique [0002] Gasifiers are mainly divided into solid-state slagging gasifiers and liquid slagging gasifiers according to the form of ash discharge. Liquid slagging gasifiers mainly include Shell pulverized coal gasifiers, GSP pulverized coal gasifiers (Siemens pulverized coal gasifiers), aerospace furnaces, entrained bed gasifiers such as coal-water slurry pressurized gasifiers, and crushed coal slag gasifiers Furnace (BGL gasifier). Traditional slag gasifiers generally include key components such as gasification agent nozzles, furnace linings, slag pools, and burners. [0003] The gasification agent nozzle is one of the key components of the gasifier. During the use of the gasifier, the nozzle needs to be maintained or replaced regularly. Ho...

Claims

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Application Information

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IPC IPC(8): C10J3/20C10J3/72C10J3/74
CPCC01B3/34C01B3/36C10J3/20C10J3/34C10J3/46C10J3/48C10J3/72C10J3/76C10J2200/152C10J2300/0956C10J2300/0959C10J2300/0976
Inventor 董卫果张科达陈贵锋晁俊楠王鹏徐春霞文芳杨宗仁唐楠郭良元李小亮
Owner CCTEG CHINA COAL RES INST
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