Water-cooled wall lining and gasification furnace comprising same

A water-cooled wall and gasifier technology, applied in the manufacture of combustible gas, petroleum industry, etc., can solve the problems of large heat loss, low effective utilization of gasifier space, low thermal efficiency, etc., to reduce maintenance costs and improve utilization. Efficiency, the effect of reducing wall heat loss

Pending Publication Date: 2021-06-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of large heat loss, low thermal efficiency, and low effective utilization of gasifier space in the prior art membrane water-cooled wall, and to provide a water-cooled wall lining and a gasification furnace containing it. furnace

Method used

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  • Water-cooled wall lining and gasification furnace comprising same
  • Water-cooled wall lining and gasification furnace comprising same
  • Water-cooled wall lining and gasification furnace comprising same

Examples

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Effect test

Embodiment 1

[0053] A water-cooled wall gasifier with a daily coal processing capacity of 1,500 tons uses pulverized coal as raw material for gasification; the gasification pressure is 4.0MPa, and the refractory lining is a tubular water-cooled wall. The coal consumption of the gasifier is 1500 tons / day, the inner diameter D of the water cooling wall of the gasification chamber is 2400 mm, the height H of the gasification chamber is 8000 mm, and the gasification temperature is 1500 °C. The outer diameter of the water-cooling tube is 38mm, the gap between the tubes is 150mm, the thickness of the connecting rib plate is 8mm, and the offset distance of the center line of the connecting rib plate is 15mm. It is covered with 16mm SiC refractory coating, and the surface of the connecting rib is filled with 50mm thick SiC refractory material. Other structural parameters are shown in Table 1.

Embodiment 2

[0055] The processing capacity of the gasifier is 2,000 tons / day of coal, and the coal-water slurry is used as the raw material for gasification. The gasification pressure is 6.5Mpa, the gasification temperature is 1,300°C, and the outer diameter of the metal shell of the gasifier is 3,000mm. Other conditions are all identical with embodiment 1.

Embodiment 3

[0057] The gasification furnace has a processing capacity of 2,000 tons / day of coal, and uses coal-water slurry as raw material for gasification. The gasification pressure is 6.5Mpa and the gasification temperature is 1300°C. The tube spacing is 68mm, the tube gap is 30mm, the surface of the connecting rib is filled with 20mm thick SiC refractory material, the outer diameter of the metal shell of the gasifier is 3600mm, and other conditions are the same as in 1.

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Abstract

The invention discloses a water-cooled wall lining and a gasification furnace comprising the same. The water-cooled wall lining comprises a plurality of water-cooling pipes and connecting rib plates; the plurality of water-cooling pipes are arranged in the circumferential direction, and every two adjacent water-cooling pipes are connected through the corresponding connecting rib plate to form a circumferentially-sealed gasification chamber cavity; the connecting rib plate is arranged on the outer side of the circumferential center line of the water cooling pipe. The distance between the circumferential center line of the connecting rib plate and the circumferential center line of the water cooling pipe is the offset distance y, 0 < y < d / 2, and d is the outer diameter of the water cooling pipe. A heat insulation groove with an opening in one end is formed by every two adjacent water cooling pipes and the corresponding connecting rib plate, and the heat insulation grooves are filled with refractory materials; and the outer side is one side far away from a vaporizing chamber cavity. The water-cooled wall lining can effectively reduce the heat loss of the wall surface of the gasification furnace, and improves the utilization efficiency of gasification raw materials and gasification agents.

Description

technical field [0001] The invention relates to a water-cooled wall lining and a gasification furnace containing the same. Background technique [0002] Coal gasification technology is one of the key technologies for the clean and efficient utilization of carbon-containing substances such as coal, and is also the main way to convert primary energy into clean secondary energy. This technology is mainly used in synthetic ammonia, synthetic methanol, hydrogen production in refineries, and blast furnace reduction Ironmaking, chemical and metallurgical industries and combined cycle power generation units. Entrained bed gasification technology has the characteristics of high carbon conversion rate and strong applicability of coal types, and has become the mainstream technology for coal gasification to prepare raw material gas. The salient features of entrained bed coal gasification technology are high temperature, high pressure, and liquid slag discharge. Therefore, the protectio...

Claims

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Application Information

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IPC IPC(8): C10J3/76
CPCC10J3/76
Inventor 许建良刘海峰梁钦锋代正华陆海峰于广锁郭庆华王兴军王亦飞王辅臣赵辉郭晓镭李伟锋陈雪莉刘霞龚岩赵丽丽沈中杰丁路
Owner EAST CHINA UNIV OF SCI & TECH
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