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Soot blowing explosion wave method

An explosion wave and oxygen technology, applied in the field of explosion wave soot blowing, can solve the problems of low volume energy density of premixed gas, low explosion pressure, weak explosion wave, etc., and achieve good soot blowing effect, low cost and fuel saving effect

Inactive Publication Date: 2006-08-02
BEIJING FANYUANXING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method of utilizing fuel-combustion-supporting gas premixed gas combustion explosion to produce explosive wave soot blowing, the adopted combustion-supporting gas is all air, and the volumetric energy density of the premixed gas is low, so the explosion pressure formed is low, The resulting blast wave is also weaker

Method used

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Embodiment 1

[0019] This embodiment is a method of soot-blowing the vertical flue of a coal-fired forging heating furnace using explosion waves, as shown in the attached figure 1 As shown, at first the explosion tank 1 is installed outside the furnace wall 5 of the flue 4 and the explosion tank 1 is communicated with the flue 4 by the nozzle 3 passing through the furnace wall 5, then the electromagnetic valve 6 is opened, and the explosion tank 1 is opened. Fill the premixed gas fully mixed with liquefied petroleum gas and industrial oxygen until it is full. The ratio of liquefied petroleum gas and oxygen is chemically equivalent, and then close the solenoid valve 6. After 0.1 seconds, it will be ignited by the spark plug 2. The premixed gas in the explosion tank 1 The gas will burn and explode, producing a strong explosion wave, and lead it into the flue 4 through the nozzle 3, and act on the soot on the wall surface of the flue to make it fall off.

Embodiment 2

[0021] This embodiment is a method of soot-blowing the tubular air preheater in the tail flue of the boiler by using the explosion wave, as shown in the attached figure 2 As shown, at first an explosion tank 1,13 is respectively installed outside the furnace wall 5 on both sides, and the explosion tank 1,13 is communicated with the flue 4 by two spray pipes 3,10 passing through the furnace wall 5 respectively, Then in explosion tank 1,13, charge into the premixed gas after acetylene and oxygen fully mix to be full of, the proportioning of acetylene and air is 0.8 times of stoichiometric ratio, then by ignition tank 7,11 ignition, explosion tank 1 , the premixed gas in 13 will burn and explode, produce a strong explosion wave, and lead into the flue 4 through the nozzles 3 and 10, and act on the dust accumulation on the inner wall of the tube of the air preheater 9, so that the dust accumulation fall off. Since the inlet pipelines of the explosion pots 1,13 are respectively c...

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Abstract

The present invention belongs to the field of soot blowing explosion wave technology, and is especially one method of blowing soot with the explosion wave produced with the burning and exploding pre-mixed gas of fuel and combustion assisting gas. The pre-mixed gas of fuel and combustion assisting gas, which is oxygen, is made to burn and explode inside the explosion tank communicated via nozzle with flue. Compared with available technology, the present invention has even high explosion wave strength, raised soot blowing effect, greatly reduced volume of the explosion tank, low cost and saving in fuel.

Description

Technical field [0001] The invention belongs to the technical field of explosive wave soot blowing, and in particular relates to a method for utilizing explosive wave soot blowing, in particular to a method for utilizing explosive wave soot blowing produced by fuel-combustion-supporting gas premixed combustion explosion. Background technique [0002] The method of using explosion waves to blow off boiler heat exchange surfaces and other industrial furnace ash deposits was first proposed by Ukrainian scientists and technicians in the 1980s. The explosion tank connected with the pipe and the flue is burned and exploded, so that the explosion wave and high-speed jet generated by the explosion are introduced into the flue, and the dust accumulation on the heat exchange surface and the wall of the flue is removed through the action of the explosion wave and high-speed jet. Domestically, it has been developing since the 1990s. Due to the good cleaning effect and the ability to rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B7/00F23D14/32C10L3/00
Inventor 曹义东
Owner BEIJING FANYUANXING SCI & TECH
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