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Method and device for rapidly characterizing contamination characteristics of coal ash

A characterization and coal ash technology, applied in the field of pulverized coal boiler combustion, to achieve the effects of good feasibility, simple data processing, and stable and reliable results

Pending Publication Date: 2021-12-31
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention provides a method and device for quickly characterizing coal ash contamination characteristics, which can realize efficient and reliable characterization of coal contamination characteristics, and solve the contamination characteristics of power plant boiler fuel. The problem of convenient inspection and timely regulation

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  • Method and device for rapidly characterizing contamination characteristics of coal ash
  • Method and device for rapidly characterizing contamination characteristics of coal ash

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Embodiment Construction

[0039] 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 some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] refer to figure 1 and figure 2 , the device for quickly characterizing the characteristics of coal ash contamination according to the present invention includes a gas distribution device 1, a powder feeder 2, a feed pipe 3, a reaction pipe 4, a filter plate 6, a bracket 9, and an air extraction pipe 7 connected in sequence , air pump 8; wherein reaction tube 4 is placed in electric heating furnace 5, and electric heating furnace 5 realizes the...

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Abstract

The invention discloses a method and a device for rapidly characterizing contamination characteristics of coal ash. The method mainly comprises the steps that pulverized coal is conveyed into the experimental device to be combusted, ash particles and smoke are generated and flow through the porous filter plate, and the ash particles are intercepted by the filter plate; after the filter plate is taken out, the loose ash particles are removed, and the remaining ash particles are adhesive ash; then the value of a physical quantity index R = (G3-G1) / (G2-G1) is calculated according to the initial mass G1 of the filter plate, the mass G2 after the ash particles are intercepted and the mass G3 after the loose ash particles are removed, and the contamination characteristic is judged. The device comprises a gas distribution device, a powder feeder, a reaction tube, an electric heating furnace, a filter plate, a sucking pump and the like, and the filter plate is formed by sintering metal powder and located at the downstream section of the reaction tube. According to the method, high-efficiency and reliable characterization of the contamination characteristics of the coal ash is realized, the contamination characteristics of the in-furnace fuel of the power station boiler can be warned in time, and the operation safety of the boiler is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of combustion of pulverized coal boilers, and in particular relates to detection means for slagging and contamination of coal species, in particular to a method and device for rapidly characterizing coal ash contamination characteristics. Background technique [0002] Many coal resources have strong slagging and contamination characteristics, which are not conducive to the safe and stable operation of coal-fired power plant boilers. Boiler slagging mainly refers to the formation of a slag layer when molten or molten ash contacts the heating surface, which generally occurs on the water wall of the furnace and the bottom of the panel superheater; while boiler fouling mainly refers to the deposition and bonding of solid ash particles on the heating surface to form stains. Dirt layer can occur on the heating surface of furnace water wall, panel superheater, high temperature superheater, high temperature reheater...

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Application Information

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IPC IPC(8): G01N33/22G01N5/04G01N25/02
CPCG01N33/222G01N5/04G01N25/02
Inventor 郭洋洲姚伟张喜来孙军王志超王桂芳杨忠灿刘家利张森李宇航
Owner XIAN THERMAL POWER RES INST CO LTD
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