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Integrated coal gasification waste heat recovery device

A technology of waste heat recovery and coal gasification, which is applied to the gasification of granular/powdered fuels, chemical industry, and the manufacture of combustible gases. High comprehensive utilization rate, reduced fly ash content, and the effect of avoiding waste

Inactive Publication Date: 2015-01-07
中国东方电气集团有限公司
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  • Abstract
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Problems solved by technology

However, in this utility model, the gasification chamber and the radiation waste pot are integrated, and the convection waste pot and the chilling chamber are installed as a split device. The one-time investment of the equipment is high, and the gasification furnace and the convection waste pot are arranged separately, which takes up a lot of space and the system runs The reliability of the device is also affected by the complexity of the

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  • Integrated coal gasification waste heat recovery device
  • Integrated coal gasification waste heat recovery device
  • Integrated coal gasification waste heat recovery device

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Embodiment Construction

[0035] The present invention comprises a tank body 2, a flange 10 is connected to the top of the tank body, and a slag port 9 under the water wall is arranged sequentially from the top to the bottom of the tank body, and a quenching chamber 11 (a quenching nozzle 8 is installed in the quenching chamber 11) , Slag pool 7, gas distributor 12, convection waste pot and gas outlet 1.

[0036] The upper end of the flange 10 is connected to the gasifier. The gasifier can be a dry coal pulverized entrained bed gasifier, or a coal-water slurry entrained bed gasifier, can be a refractory brick lined gasifier, or can be a water-cooled wall gasifier. Furnace coal. The gasification reaction is carried out in the gasification furnace to generate coal gas entrained with a large amount of ash, which enters the chilling chamber 11 after being cooled by the spiral coil water wall 9 at the lower slag outlet. The quenching nozzle 8 injects pressurized quenching water to further cool down the gas...

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Abstract

The invention relates to an integrated coal gasification waste heat recovery device. The device comprises a tank, wherein a feeding hole, a quenching chamber, a slag pool, a convective waste heat boiler and a gas outlet are formed from top to bottom of the tank in sequence; the coal gas flows downwards from the feeding hole of the tank and is quenched in the quenching chamber; the temperature of the quenched coal gas is 800-900 DEG C; the wastewater enters the slag pool while the coal gas continuously flows downwards into the convective waste heat boiler to be cooled; the temperature of the cooled coal gas is 200-300 DEG C; the cooled coal gas is exhausted from the gas outlet. Combining the quenching chamber with the convective waste heat boiler into a whole, the device has the advantages that the device fully recovers high-temperature raw coal gases and slag sensible heat, removes fly ash, reduces the investment and improves the heat efficiency.

Description

technical field [0001] The invention relates to a coal gasification equipment, in particular to a waste heat recovery device used in the entrained bed gasification technology. Background technique [0002] The current mainstream entrained bed gasification technology is mainly divided into coal-water slurry gasification technology and dry coal powder gasification technology. Among them, the typical representative of coal-water slurry gasification technology is GE, whose gasification chamber adopts refractory brick lining structure. The gasification temperature is 1300~1400°C; Shell and GSP gasification chambers, which are typical representatives of dry coal gasification technology, generally adopt a water-cooled wall structure, and the gasification temperature can reach above 1500°C. [0003] After the coal reacts in the gasification chamber, high-temperature crude gas with ash entrained is produced. In order to meet the requirements of the follow-up process, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48C10J3/84C10J3/86
CPCC10J3/84C10J3/86Y02P20/10Y02P20/129
Inventor 陈鹏胡春云吴家桦王晓亮陶舒畅江维万志伟
Owner 中国东方电气集团有限公司
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