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Gasifier of entrained-flow bed with single nozzle

A technology of gasifier and entrained bed, which is applied in the field of single-nozzle entrained bed gasifier, can solve the problems of downcomer ablation, affecting system stability and availability, etc., achieves reduced operation stability, and is easy to scale up and apply , Reduce the effect of equipment investment

Active Publication Date: 2013-06-12
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem that high-temperature synthesis gas entrains molten ash into the washing and cooling chamber, which leads to ablation of the downcomer and seriously affects the stability and availability of the system. Environmentally friendly and energy-saving single-nozzle entrained-bed gasifier

Method used

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  • Gasifier of entrained-flow bed with single nozzle
  • Gasifier of entrained-flow bed with single nozzle
  • Gasifier of entrained-flow bed with single nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A set of dry coal powder pressurized single-nozzle entrained flow gasifier with a daily processing capacity of 3,000 tons of coal. The inner diameter of the shell of the gasification reaction chamber (that is, the wall 2 of the gasifier) ​​is 3850mm, and the inner diameter of the lower slag port of the gasifier is 4 1100mm. A total of 100% pulverized coal, 100% water vapor and 100% pure oxygen are injected into the process burner 16 on the top of the gasifier body, and the top process burner chamber 11 is used as an ignition / start-up burner.

[0047] The cylinder diameter of the syngas quenching conversion chamber is 4800 mm. There is a layer of quenching ring 14. 128 cooling nozzles 13 are evenly arranged along the quenching ring 14. Liquid water is sprayed. There is a total of one layer of quenching nozzles. The first angle λ of the radial injection is 15°, the second angle α of the radial injection is -3°, and the injection speed is about 5m / s.

[0048] The flaring ...

Embodiment 2

[0075] A set of coal-water slurry pressurized single-nozzle entrained-bed gasifier with a daily processing capacity of 3000 tons of coal. The inner diameter of the gasifier body (namely the gasifier wall 2) is 4000 mm, and the inner diameter of the lower slag port 4 of the gasifier is 1000 mm. A total of 100% coal water slurry and 100% pure oxygen are sprayed into the process burner 16 in the process burner chamber 11 at the top of the gasifier body.

[0076] The cylinder diameter of the syngas quenching conversion chamber is 4800 mm. The quenching ring 14 is provided with a layer. The quenching nozzles 13 are evenly arranged along the quenching ring 14. There are 1 layer. The included angle λ is 30°, the second included angle α of radial injection is -0.5°, and the injection speed is about 8m / s.

[0077] The flaring angle ε of the guide pipe 12 of the chilling conversion chamber is set to 30°.

[0078] The diameter of the downcomer 7 in the washing and slag removal chamber i...

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Abstract

The invention discloses a gasifier of an entrained-flow bed with a single nozzle. The gasifier is characterized by comprising a gasifier body, wherein a chilling conversion chamber is arranged below the gasifier body, and a washing deslagging chamber is arranged below the chilling conversion chamber. The gasifier body, the chilling conversion chamber and the washing deslagging chamber are coaxially arranged. The gasifier body is internally provided with a technical nozzle chamber. The chilling conversion chamber is internally provided with a chilling ring. The gasifier provided by the invention has the characteristics of easiness in amplified application in a large scale, stable and reliable operation, environmental friendliness, energy conservation and the like.

Description

technical field [0001] The invention relates to a single-nozzle entrained-bed gasification furnace, which belongs to the technical field of energy clean utilization. Background technique [0002] The development of fuel gasification technology has a history of more than 100 years. With the continuous advancement of technology and the continuous change of application requirements, more technical categories have emerged in gasification technology. From the popularization, application and development scale of gasification technology today, we can see It is pointed out that the entrained bed coal gasification technology gradually stands out from many coal gasification technologies and becomes one of the typical representative technologies of the third generation or the most advanced gasification technology. [0003] Gasifier is a leading technology in chemical industry, fuel cell, power generation and other industries. Its technical reliability, operation stability, equipment in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48C10J3/50C10J3/84
Inventor 倪建军张建文程相宣池国镇
Owner SHANGHAI BOILER WORKS
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