Combustion device of gasified carbocoal type nonflammable fine-grained fuel and combustion method with same

A combustion device and fine particle technology, applied in the direction of combustion method, fuel burned in molten state, fluidized bed combustion equipment, etc., can solve the problem of low combustion efficiency of gasified semi-coke-like refractory fine particle fuel, and avoid staying If the time is too short, the effect of prolonging the residence time and reducing the maintenance cost

Active Publication Date: 2014-08-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of low combustion efficiency of gasified semi-coke-like refractory fine-particle fuels in a circulating fluidized bed, and provides a combustion device for gasified semi-coke-like refractory fine-particle fuels and a combustion method using the device

Method used

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  • Combustion device of gasified carbocoal type nonflammable fine-grained fuel and combustion method with same
  • Combustion device of gasified carbocoal type nonflammable fine-grained fuel and combustion method with same

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine figure 1 Describe this embodiment, the combustion device of the gasified semi-coke class flame retardant fine particle fuel in this embodiment includes a raw material bin 5, a pneumatic injector 6, a Roots blower 12, a regulating valve 10, an injection pipe 15, and an inclined return pipe 18 , cyclone separator 3, return valve 4 and furnace 1, furnace 1 includes furnace dense-phase zone 1-2 and furnace dilute-phase zone 1-1, furnace dilute-phase zone 1-1 and furnace dense-phase zone 1-2 from above Arranged in order from bottom to bottom and made into one, the raw material bin 5 is located above the pneumatic injector 6 and communicates with the pneumatic injector 6, and the ejector pipe 15 includes the ejector pipe horizontal section 20, the ejector pipe elbow 19, and the ejector pipe standpipe section 16 And the ejector guide nozzle 21, the ejector horizontal section 20, the ejector elbow 19, the ejector standpipe section 16 an...

specific Embodiment approach 2

[0021] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the ejector pipe guide nozzle 21 of the ejector pipe 15 is inserted into the flange seat 17 on the return inclined pipe 18, and the ejector pipe guide nozzle 21 is above the Connect the riser section 16 of the injection pipe by flanges, and fasten the flanges with bolts. Others are the same as in the first embodiment.

[0022] The schematic diagram of the assembly of the ejector pipe guide nozzle 21 is as follows: figure 2 shown.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: each section of the injection pipe 15 is connected by a flange. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a combustion device of gasified carbocoal type nonflammable fine-grained fuel and a combustion method with the same, which relate to a combustion device and a combustion method with the same and aim to solve the problem of low combustion efficiency of gasified carbocoal type nonflammable fine-grained fuel in a circulating fluidized bed in the prior art. The device comprises a raw material bin, a pneumatic ejector, a Roots blower, a regulating valve, an ejector pipe, a return inclined pipe, a cyclone separator, a return valve and a hearth, wherein the raw material bin is positioned above the pneumatic ejector, the ejector pipe is connected to one end of the pneumatic ejector, the Roots blower is connected to the other end of the pneumatic ejector, the return valve is connected to one end of the return inclined pipe, a dense-phase zone of the hearth is connected to the other end of the return inclined pipe, and the cyclone separator is connected to the return valve below. The combustion method comprises the following steps: (1) turning on a boiler of a circulating fluidized bed and starting the Roots blower, and (2) putting the fuel into the raw material bin, opening the regulating valve and starting the pneumatic ejector, so that the fuel enters the return inclined pipe and then is sent to the dense-phase zone of the hearth to be burnt. The combustion device and the method are used for combustion of the vaporized carbocoal type nonflammable fine-grained fuel.

Description

technical field [0001] The invention relates to a combustion device and a combustion method using the device. Background technique [0002] Industrial gasifiers have strong coal adaptability. However, coals with high fixed carbon, high melting point and high ash content will produce solid fly ash, namely gasified semi-coke during the gasification process, and a large amount of gasified semi-coke is fine particles, which cannot be efficiently captured by the cyclone separator, causing gasification furnace Efficiency decreases, causing pipeline system wear and tear, and also brings environmental pollution. Rational use of this part of resources has significant economic and ecological benefits. [0003] Gasified semi-coke has the characteristics of small particle size, high carbon content, low volatile matter, poor reactivity, difficulty in ignition, and difficulty in burning out. The effect of regasification cannot be achieved by directly returning the gasified semi-coke to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/10F23C10/18F23C10/22
Inventor 王辉杨利郑志敏郭帅蔡永铁刘雪龙郭永军
Owner HARBIN INST OF TECH
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