Pulverized coal concentrator and pulverized coal burner applying same

A pulverized coal burner and pulverized coal concentration technology, which is applied in the direction of burners, burners, and combustion methods for burning powder fuels, can solve problems such as poor separation and concentration effects, large air flow channel resistance, and limited space layout. Achieve good separation and concentration effects, rapid ignition and long service life

Active Publication Date: 2010-06-30
YANTAI LONGYUAN POWER TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Among them, the elbow structure uses the separation and concentration of pulverized coal particles when passing through the elbow due to the difference in inertia of the gas-solid two-phase flow, which has the disadvantage of limited space arrangement
The louver-type gas-solid two-phase flow separation and concentration device is equipped with multiple concentration grids in the combustion tube. The complex structure of the device easily leads to coal dust deposition, and has the disadvantages of poor separation and concentration effects, large air flow channel resistance and poor wear resistance.

Method used

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  • Pulverized coal concentrator and pulverized coal burner applying same
  • Pulverized coal concentrator and pulverized coal burner applying same
  • Pulverized coal concentrator and pulverized coal burner applying same

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] see figure 1 , which is a schematic structural diagram of a pulverized coal concentration device according to an embodiment of the present invention, wherein figure 1 (a) is the front view; figure 1 (b) is a left view. The pulverized coal concentration device described in the embodiment of the present invention is used to realize the concentration separation of solid fuel, which includes: a main body 1 with a spatial geometric structure, the main body...

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Abstract

The invention discloses a pulverized coal concentrator used for realizing concentration and dilution separation of solid fuel, which comprises a main body (1) with a spacial geometrical structure; the main body comprises a windward side (2) and a leeward side (3); and at least one deflector hole (4) is formed between the windward side (2) and the leeward side (3) of the main body (1). Because a principle of concentration impact guided separation is applied, the resistance is obviously reduced, and the size of the pulverized coal concentrator is conveniently adjusted flexibly in a certain specification range. The invention also discloses a pulverized coal burner applying the pulverized coal concentrator.

Description

technical field [0001] The invention relates to the technical field of pulverized coal burners, in particular to a pulverized coal concentration device and a pulverized coal burner using the device. Background technique [0002] In order to achieve stable combustion and reduce the formation of nitrogen oxides (NOx), the pulverized coal burner of the coal-fired boiler generally adopts a pulverized coal concentration device to make the pulverized coal form a specific thick-lean separation characteristic inside the burner and near the nozzle. The performance of the pulverized coal concentration device will directly affect the overall performance of the pulverized coal burner. The pulverized coal concentrating device for the separation of gas and solid two-phase flow used in conventional pulverized coal boilers generally adopts the structure of elbows and shutters. Among them, the elbow structure uses the separation and concentration of pulverized coal particles when passing th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00
Inventor 程昌业崔星源张广全张玉斌
Owner YANTAI LONGYUAN POWER TECH
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