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Radiation waste boiler system and working method thereof

A waste boiler and water-cooled wall technology, applied in gasification process, chemical industry, petroleum industry, etc., can solve the problem of high system energy consumption

Pending Publication Date: 2018-10-26
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the chemical production process that requires conversion reactions, the radiation + chilling process has great advantages, while the chilling + convection waste boiler process requires a large amount of chilled air, which makes the system consume more energy

Method used

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  • Radiation waste boiler system and working method thereof
  • Radiation waste boiler system and working method thereof
  • Radiation waste boiler system and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] like Figure 1~3 As shown, the present embodiment provides a radiation waste pot system, which includes:

[0077] A casing 51, on which a syngas / gas outlet 52 is arranged, and a radiation waste pot and a purge assembly are arranged inside the casing 51;

[0078] Radiation waste pot, the upper and lower parts of the radiation waste pot are respectively provided with an inlet 12 and an outlet 13, and the straight section 11 is surrounded by a cylinder water cooling wall 111, and a plurality of sets of radial water cooling walls are arranged radially inside the cylinder water cooling wall 111. wall 112;

[0079] The purge assembly is provided with at least one purge gas ring pipe 201 on the outer side of the water wall 111 of the cylinder, and the purge gas ring pipe 201 communicates with the purge gas inlet pipe 202 on the outside and several purge gas branch pipes 203 on the inside in turn One end of the purge gas branch pipe 203 communicates with the purge gas ring pi...

Embodiment 2

[0099] like Figure 4 As shown, on the basis of Embodiment 1, the radiation waste boiler system of this embodiment also includes a monitoring component, which includes a number of thermocouples 31 and a flow meter 32, and the thermocouples 31 are used to measure the cylinder water wall 111 and / or Or the surface temperature of the radial water cooling wall 112, the temperature of the cooling water entering the cylinder water cooling wall 111 and / or the radial water cooling wall 112, and the steam temperature of the cylinder water cooling wall 111 and / or the radial water cooling wall 112 steam drum, the flowmeter 32 is used to measure the flow of cooling water entering the cylinder water wall 111 and / or the radial water wall 112 and the steam output of the steam drum 41 .

[0100] The radiant waste pot also includes a steam drum 41, which is used to separate saturated steam and water generated in the cylindrical water-cooled wall 111 and / or the radial water-cooled wall 112.

[...

Embodiment 3

[0119] A multi-nozzle opposed coal-water slurry gasification device for the production of chemicals, in which the daily processing scale of the gasifier is 1500t / d, and the high-temperature gas flow rate from the gasifier into the radiant waste pot is about 190,000Nm 3 / h, the temperature is 1340°C, the ash flow rate is 6800kg / h (the ash content is about 30%), and the pressure is 6.5MPa. In order to recover the sensible heat carried by the high-temperature gas, a radiant waste boiler system shown in Embodiment 2 is arranged at the bottom of the gasification chamber, wherein,

[0120] The inner diameter of the shell 51 is 4200mm, the inner diameter D of the lining of the cylindrical water-cooled wall 111 is 3200mm, the height of the straight section 11 is 22m, the number of radial water-cooled walls 112 is 16, and the inner diameter of the radial water-cooled wall 112 is 2600mm. The SiC layer stacked on the inner wall of the lower cone section water cooling wall 132 is 16mm, an...

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Abstract

The invention discloses a radiation waste boiler system and a working method thereof. The radiation waste boiler system comprises a shell, a radiation waste boiler and a purging assembly, wherein synthesis gas / fuel gas and slag enter the radiation waste boiler from an upper inlet of the radiation waste boiler, are subjected to heat exchange through the radiation waste boiler and are discharged from a synthesis gas / fuel gas outlet, and the slag is discharged from a lower outlet of the radiation waste boiler; and the purging assembly is used for purging the radiation waste boiler from the innerdiameter to a water-cooling wall. According to the radiation waste boiler system, the sensible heat of high-temperature gas can be recycled through radiation heat transfer; by utilizing the measures of setting the purging assembly and the like, dust accumulated on the surface of the water-cooling wall during the operation of the radiation waste boiler can be effectively eliminated, and meanwhile,the efficient radiation heat exchange and the purging of dust or slag accumulated on the surface of the water-cooling wall can be realized; and the heat recovery efficiency of the radiation waste boiler is improved, and the safe and long-term stable operation level of the radiation waste boiler is increased.

Description

technical field [0001] The invention relates to a high-temperature synthetic gas / gas high-temperature sensible heat recovery device, in particular to a radiation waste boiler system and a working method thereof. Background technique [0002] The coal gasification process uses oxygen (air, oxygen-enriched or industrial pure oxygen) and water vapor as the gasification agent to convert the combustible part of coal or coal char into synthesis gas / combustible gas through chemical reaction. Coal gas The gasification process can be divided into fixed bed atmospheric pressure (pressurized) gasification process, fluidized bed coal gasification process and entrained bed coal gasification process. And other characteristics, become the mainstream technology of coal gasification today. [0003] The entrained bed gasification process is characterized by high temperature, that is, the use of pure oxygen / oxidant to undergo partial oxidation reaction with coal, so that most of the combustib...

Claims

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Application Information

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IPC IPC(8): C10J3/72C10J3/86
CPCC10J3/723C10J3/86C10J2300/0956C10J2300/0959C10J2300/0976C10J2300/093Y02P20/129Y02P20/10
Inventor 许建良于广锁刘海峰郭庆华梁钦锋王兴军王亦飞龚欣王辅臣代正华赵辉郭晓镭李伟锋陈雪莉刘霞陆海峰龚岩赵丽丽
Owner EAST CHINA UNIV OF SCI & TECH
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