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Dry-pulverized-coal gasification combined burner

A technology of combining burners and dry coal powder, applied in the direction of granular/powder fuel gasification, etc., can solve the problems of uncontrollable combustion flame diameter, easy to burn membrane type water wall, etc., to improve the degree of mixing and turbulent kinetic energy , Improve reliability and safety, simple operation effect

Active Publication Date: 2014-01-08
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to optimize the combination of the ignition burner and the pulverized coal burner, so as to provide a new dry coal pulverized gasification combination burner, which does not need to insert or pull out the burner multiple times, and at the same time overcomes the uncontrollable combustion flame Diameter and the resulting problem of easy burning of the membrane water wall

Method used

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  • Dry-pulverized-coal gasification combined burner
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  • Dry-pulverized-coal gasification combined burner

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Embodiment Construction

[0019] A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the dry pulverized coal gasification combination burner of the present invention includes a pulverized coal burner 1 and an ignition burner 2 . The main body of the pulverized coal burner 1 is cylindrical, and includes the first water-cooled jacket, coal powder channel, first oxygen channel 7 and inner cylinder from outside to inside, wherein the first water-cooled jacket includes the first water inlet channel 3, the first The water outlet channel 4 and the window-type cooling water tank 5, the first water inlet channel 3 communicates with the first water outlet channel 4 through the window-type cooling water tank 5, and the window-type cooling water tank 5 spirally coils 4 times at the fire end of the pulverized coal burner 1. The pulverized coal channel includes a pulverized coal outlet channel 9 and 3 pu...

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Abstract

The invention discloses a dry-pulverized-coal gasification combined burner comprising a pulverized coal burner and an igniting burner. The pulverized coal burner sequentially comprises a first water-cooling jacket, a pulverized coal channel, a first oxidant channel and an inner barrel from outside to inside. The pulverized coal channel is directly adjacent to the first oxidant channel, and contracts toward the axial direction of the pulverized coal burner, at a position, adjacent to a flame-forward end. The first water-cooling jacket comprises a first water-inflowing channel, a window-type water-cooling groove and a first water-outflowing chanel, and the first water-inflowing channel is communicated with the first water-outflowing channel through the window-type water-cooling groove which is spirally wound at the flame-forward end of the pulverized coal burner. The igniting burner is arranged in the inner barrel and comprises a second water-cooling jacket, a second oxidant channel, a fuel channel, an igniter and a center nitrogen channel. By the arrangement, an ignition process is simplified, and reliability of ignition and operation of pulverized coal is improved; flame diameter is effectively controlled, a membrane water-cooling wall is prevented from being damaged by flames, and reliability of a gasification furnace is improved.

Description

technical field [0001] The invention relates to a dry coal powder gasification burner. Background technique [0002] Coal gasification refers to sending properly treated coal (such as coal powder, coke particles, combustible powder, etc.) into a reactor such as a gasifier, and passing an oxidant ( air or oxygen and steam) into gases in a certain way to obtain synthesis gas (such as CO, H 2 、H 2 O.CO 2 etc.), the synthesis gas generated by coal gasification can be widely used in various chemical industries. In the coal gasification process, the burner is an indispensable and important part. [0003] There are generally two feeding methods for the existing pulverized coal gasifier. One is to use the start-up burner to raise the temperature (boost pressure) of the gasifier. Coal powder, and start the gasification reaction; the second is to adopt the form of combined operation of the ignition burner and the coal powder burner, first use the ignition burner to ignite and boo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50C10J3/48
Inventor 焦洪桥郭伟罗春桃井云环黄斌雍晓静侯茂林杨磊
Owner CHNA ENERGY INVESTMENT CORP LTD
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