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Testing apparatus for testing slagging resistance of material

A test device and slagging technology, which is applied in the direction of chemical analysis by combustion, can solve the problems of long time spent, waste of manpower and material resources, etc., and achieve the effect of easy blockage

Pending Publication Date: 2017-12-22
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method takes a long time and wastes a lot of manpower and material resources

Method used

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  • Testing apparatus for testing slagging resistance of material
  • Testing apparatus for testing slagging resistance of material
  • Testing apparatus for testing slagging resistance of material

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, the present invention includes an air compressor 1 connected by pipelines, a refrigerated dehumidifier 2, an air preheater 3, a pressure reducing valve 4, and a ball valve 5. The compressed air is divided into two paths after passing through the ball valve 5, and one path is connected to the pulverized coal bin 6 upper end, the other way enters the Venturi feeder 7 and enters the acceleration pipe 8 after mixing with the falling coal powder, and enters the mixing chamber 9 after the acceleration is completed. The left and right sides of the mixing chamber 9 are equipped with methane inlets and Bottles 15 are connected, compressed air, pulverized coal and methane are fully mixed, ignited by ignition controller 10 and enter nozzle 11 for combustion and injection. The nozzle 11 is facing the sample stand 13, and ...

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Abstract

The invention discloses a testing apparatus for testing slagging resistance of a material. The testing apparatus comprises an air compressor, a refrigeration dehumidifier, an air preheater, a reducing valve and a ball valve connected through pipelines, wherein the pipeline behind the ball valve is divided into two paths, one path is connected with the upper end of a pulverized coal bunker, and the other path is connected with a venturi feeder; the compressed air is mixed with falling pulverized coal to enter an accelerating tube positioned on the rear part of the venturi feeder; the accelerating tube is connected with a mixing chamber; a gas inlet is formed in the mixing chamber and connected with a gas cylinder; the compressed air, the pulverized coal and the gas are fully mixed, ignited by an ignition controller and then enter to a nozzle to be burned and sprayed; the nozzle is aligned at a sample rack; a temperature control device is arranged on the sample rack and is used for controlling the sample temperature; a test chamber is formed outside the nozzle and the sample rack; and a high-speed camera is arranged at an observation hole in the outer side of the test chamber. The testing apparatus can simulate actual conditions of a boiler heating surface and provide a certain basis for evaluating the slagging resistance of the coating.

Description

technical field [0001] The invention relates to a test device for testing the anti-slagging performance of materials, in particular to a test device for testing the anti-slagging coating of a coal-fired boiler or the anti-slagging performance of metal materials on a heating surface. Background technique [0002] Slagging and ash accumulation on the heating surface of coal-fired boilers are common problems encountered during operation. After slagging on the heating surface, the heat transfer will deteriorate, the exhaust gas temperature will increase, the thermal efficiency of the boiler will decrease, and the operating cost of the boiler will be greatly reduced. economy. At the same time, the inhomogeneity of slagging will lead to an increase in the thermal deviation of the superheater, causing the tube wall to overheat. When the slag on the upper part of the furnace falls, it may damage the cold ash hopper and water-cooled wall tubes below, seriously affecting the safety o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 池作和潜培豪王进卿张光学李锦
Owner CHINA JILIANG UNIV
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