A kind of gasification furnace and its application, gasification method of carbonaceous material

A technology of gasification furnace and gasification reaction, which is applied in gasification process, gasification device details, granular/powder fuel gasification, etc. problems such as large losses, to achieve the effect of improving the online rate of the gasifier, improving the efficiency of cold gas, and reducing heat loss

Active Publication Date: 2017-04-05
EAST CHINA UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of low flux utilization rate, excessive wall heat loss, high oxygen consumption and low efficiency of gasification cold coal gasification in the existing high ash melting point coal gasification technology, and provide a gasification Furnace and its application, gasification method of carbonaceous substances

Method used

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  • A kind of gasification furnace and its application, gasification method of carbonaceous material
  • A kind of gasification furnace and its application, gasification method of carbonaceous material
  • A kind of gasification furnace and its application, gasification method of carbonaceous material

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Embodiment 1

[0038] In this embodiment, the structure of the gasifier used is as figure 1 As shown, the gasification furnace includes a vertical furnace body 1, and the vertical furnace body 1 is provided with a slag outlet 2, a synthesis gas outlet 3 and two process burners 4, the vertical furnace body Two flux nozzle chambers 5 and a flux nozzle 501 installed in the flux nozzle chamber 5 are also fixed on the side wall of the middle and lower section of 1, and the two flux nozzle chambers 5 are arranged in the vertical The furnace body 1 has the same cross section and is evenly distributed along the cross section. The slag outlet 2 and the synthesis gas outlet 3 are the same outlet, and both are arranged at the bottom of the vertical furnace body 1. The process burner 4 is arranged on the side wall of the upper section of the vertical furnace body 1.

[0039] The enlarged schematic diagram of the structure of the flux nozzle chamber 5 and the flux nozzle 501 is as follows: figure 2 Shown....

Embodiment 2

[0053] The condition of this embodiment is compared with that of embodiment 1, the only difference is: this embodiment uses image 3 In the structure of the gasification furnace, 6 is a staged oxygen supply nozzle chamber, and 601 is a staged oxygen supply nozzle set in the staged oxygen supply nozzle chamber 6. The angle between the axis of the flux nozzle 501 on the horizontal plane and the axis of the flux nozzle chamber 5 is 30°; the height of the axis of the flux nozzle chamber 5 from the bottom of the vertical furnace body 1 is 0.3 times the height of the vertical furnace body 1; on the side wall of the middle and lower section of the vertical furnace body 1, two graded oxygen feeding nozzle chambers 6 are also fixed, which are arranged in the flux nozzle chamber 5 On the vertical furnace body 1 below and on the vertical furnace body 1 above the slag tap 2; two graded oxygen nozzle chambers 6 are fixedly arranged on the same cross section of the vertical furnace body 1 Th...

Embodiment 3

[0059] The condition of this embodiment is compared with that of embodiment 1, the only difference is: this embodiment uses Figure 4 The structure of the gasification furnace, the number of process burners 4 is 3, in addition to the two process burners arranged on the side wall of the upper section of the vertical furnace body 1, it also includes the top of the vertical furnace body 1 A craft burner. In addition to the coal in Example 1, the raw materials are also blended with 10% residual oil.

[0060] After gasification using the gasifier of this embodiment, the amount of flux (limestone) added can be reduced to 6wt% (coal-based), the wall heat loss of the gasifier is reduced to 3%, and the effective gas component is increased to 89.5%.

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Abstract

The invention discloses a gasification furnace, its application and a method for gasifying carbonaceous substances. The gasification furnace includes a vertical furnace body, and a slag outlet, a synthesis gas outlet and at least one process burner are provided on the vertical furnace body. At least one flux nozzle chamber is fixed, and the flux nozzle installed in the flux nozzle chamber: the height of the axis of the flux nozzle chamber from the bottom of the vertical furnace body is less than or equal to the vertical furnace body 0.4 times the height. The gasification furnace provided by the invention can add flux from the bottom of the gasification furnace, which effectively ensures the liquid slag discharge at the slag outlet, improves the carbon conversion rate of the gasification furnace, reduces heat loss on the wall surface, and avoids The flux enters the fly ash, which improves the utilization rate of the flux.

Description

Technical field [0001] The invention relates to a gasification furnace, its application, and a method for gasifying carbonaceous substances. Background technique [0002] Coal gasification technology is the main way to convert solid primary energy such as coal into gaseous clean secondary energy. This technology is mainly used in the fields of ammonia synthesis, methanol synthesis, hydrogen production and gas preparation. Entrained bed gasification uses the principle of jet entrainment in fluid mechanics to inject coal slurry or pulverized coal particles and gasification medium into the gasification furnace at high speed through nozzles. The jet causes entrainment and is highly turbulent, thereby enhancing gasification. The mixing in the furnace is conducive to the full progress of the gasification reaction. The characteristics of high temperature, high pressure and good mixing of entrained bed gasifier determine that it has the greatest potential to increase production load per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/48C10J3/46C10J3/50
CPCC10J3/46C10J3/466C10J3/48C10J3/485C10J3/50C10J3/506C10J2200/152C10J2300/0956C10J2300/0976C10J2300/0983
Inventor 赵辉许建良刘海峰龚欣李伟锋梁钦锋郭晓镭王辅臣于广锁王亦飞代正华周志杰陈雪莉郭庆华王兴军刘霞陆海峰李超龚岩王立
Owner EAST CHINA UNIV OF SCI & TECH
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