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Gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method

A technology of gasification agent and gasification furnace, which is applied in the direction of granular/powdered fuel gasification, etc., and can solve problems such as uneven slag hanging on the wall of the gasification furnace and difficulty in handling fly ash

Inactive Publication Date: 2015-12-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of uneven slag hanging on the wall surface of the gasification furnace and difficulty in handling fly ash in the prior art, the present invention proposes a device and method for gasification furnace with strong rotating coal powder and fly ash mixed combustion

Method used

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  • Gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method
  • Gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method
  • Gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method

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specific Embodiment approach 1

[0028] Specific implementation mode one: combine figure 1 with figure 2 This embodiment is described. This embodiment includes a pulverized coal burner 1, a gasification furnace body 2, a water wall 4, a synthesis gas channel 5, a slag pool 6, a gasification agent nozzle 7, a fly ash nozzle 8 and a fly ash delivery system, The water-cooled wall 4 is arranged on the inner side wall of the gasification furnace body 2. The water-cooled wall 4 is composed of several vertical circular tubes. The inner cavity of the rotator surrounded by the water-cooled wall 4 is the gasification furnace 3. The slag pool 6 is located in the gasification furnace. At the bottom of the body 2, the synthesis gas channel 5 is arranged in the middle and lower part of the gasification furnace body 2, and the synthesis gas channel 5 communicates with the gasification furnace 3. The gasification agent nozzle 7 is inserted into the gasification furnace 3 along the tangential direction of the gasification ...

specific Embodiment approach 2

[0029] Specific implementation mode two: combination figure 1 with figure 2 To describe this embodiment, the angle α between the axis of the fly ash nozzle 8 in the horizontal direction and the secant line M of the gasifier is 10°, and the secant line M of the gasifier is parallel to the axis of the gasification agent nozzle 7 . Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0030] Specific implementation mode three: combination figure 1 with figure 2 To describe this embodiment, the angle α between the axis of the fly ash nozzle 8 in the horizontal direction and the secant line M of the gasifier is 20°, and the secant line M of the gasifier is parallel to the axis of the gasification agent nozzle 7 . Other components and connections are the same as those in the first embodiment.

[0031] Specific implementation mode four: combination figure 1 with figure 2 Describe this embodiment, the fly ash conveying system of this embodiment comprises powder bin 11, powder bin valve 12, lock bucket 13, lock bucket valve 14, fly ash feeding tank 15 and fly ash feeding tank valve 16, powder bin 11 , powder bin valve 12, lock bucket 13, lock bucket valve 14, fly ash feeding tank 15 and fly ash feeding tank valve 16 are connected sequentially from top to bottom. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention discloses a gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and method. The gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device is characterized in that a gasification agent nozzle is inserted into a gasifier chamber along the tangential direction of the gasifier chamber; the axis of a fly ash nozzle and the axis of the gasification agent nozzle are located in the same horizontal plane; the lower part of a pulverized coal passage is provided with a rotational flow blade; a pulverized coal burner is arranged at the top part of a gasifier body; the axis of the pulverized coal burner is coincided with the axis of the gasifier chamber. The method comprises the steps of firstly, setting the pressure and the temperature in the gasifier chamber; secondly, sending dry pulverized coal which is carried by nitrogen or carbon dioxide into the gasifier chamber through the pulverized coal passage; thirdly, enabling mixed airflow of the dry pulverized coal and the gasification agent to be ignited by high-temperature synthesis gas; fourthly, spraying the fly ash which is carried by the nitrogen or the carbon dioxide into the gasifier chamber through the fly ash nozzle; fifthly, tangentially spraying the rest gasification agent into the gasifier chamber through the gasification agent nozzle; sixthly, enabling crude gas which is generated by gasifying to flow out of the gasifier chamber through a synthesis gas passage, and enabling generated liquid slag to flow into a slag bath along the wall. The gasification agent, strong-rotating pulverized coal and fly ash mixed-burning gasifier device and the method, disclosed by the invention, are applied to the field of coal gasification.

Description

technical field [0001] The invention relates to a gasification furnace and a gasification method, in particular to a device and method for a gasification furnace with strong rotation of coal powder and fly ash. Background technique [0002] Coal gasification technology is an efficient and clean clean coal technology. The current coal gasification technology is mainly divided into four categories: moving bed gasification, fluidized bed gasification, entrained flow gasification and molten bed gasification. Among them, entrained bed gasification technology has become the main development direction of coal gasification technology due to its advantages of high gasification intensity, large production capacity and high carbon conversion rate. Entrained bed gasification has two main features. One is the high operating temperature, about 1300-1600 ° C. The ash and slag formed in the furnace is liquid, and the slag discharge method is liquid slag discharge; "Technology to protect t...

Claims

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Application Information

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IPC IPC(8): C10J3/48C10J3/50
Inventor 曾令艳陈智超李争起王浩鹏刘晓英蒋炳坤朱群益
Owner HARBIN INST OF TECH
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