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07

2020

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05

Principle and starting method of waste heat boiler

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【概要描述】The rapid development trend of social and economic development, heating furnace is widely used in the manufacturing of each manufacturing industry, waste heat boiler as a kind of heating furnace, but there is no natural material ignition equipment, it has other heating furnace does not have the characteristics, then the principle of waste heat boiler is how, waste heat boiler start to pay attention to what problems, the following to the big guys to explain in detail.

The rapid development trend of social and economic development, heating furnace is widely used in the production of each manufacturing industry, waste heat boiler as a kind of heating furnace, but no natural material ignition equipment, it has other heating furnace does not have the characteristics, then the principle of waste heat boiler is how, waste heat boiler start to pay attention to what difficulties, the following to the big guys to explain in detail.
The use of high temperature waste heat recovery of organic waste gas is generally waste heat generation. Considering the manufacturing must, in order to prevent the heating furnace stop using, repair endangering manufacturing, generally have a bypass exhaust flue and auxiliary smoke tube, when the waste heat power generation, turn off the bypass exhaust flue, its soot into the waste heat boiler, soot steps are as follows: high temperature soot a soot spacer a high temperature heating surface a super low temperature heating surface a convection tube bundle (air conditioning evaporator) a boiler energy saver a dust removal equipment a centrifugal fan a main smoke tube
余热锅炉
This kind of heating furnace using waste heat recovery of organic waste gas will generally 800 ~ ℃ (such as coke power plant waste heat boiler soot temperature of 900 ~ 1O00 ~ ℃) above, the design program for the reasonable use of organic waste gas heat, to enhance the steam temperature, the heating surface is generally put into the high-temperature organic waste gas entrance. That way in the start, because there is a full process of steam flow creation, when the high-temperature soot directly into the waste heat boiler, the heating surface because there is no steam cooling, it is very easy to overheating overtemperature conditions.
Start and stop more often, the heating surface due to frequent overheating material changes, resulting in lower compressive strength, operation will appear deformation and burst conditions. Therefore, this kind of waste heat boiler starting method is different from the general use of ultra-low temperature organic waste gas waste heat boiler, start, to prevent the heating surface overheating becomes the first problem to deal with.
Start-up method to prevent overheating of the heating surface
In the start, the heating surface will be full of oil and water, in the whole process of starting, because of the heating effect of high-temperature organic waste gas, so that the water in the heating surface is slowly heated gasification, high-temperature organic waste gas by the heating surface after cooling, into the convection tube bundle (air conditioning evaporator) area, so that the volatile encounter with the water in the heating surface is slowly heated. With the increase of time, the heated surface of the original water all become steam, and outward discharge, and the volatile encounter surface of the water also just began to cause steam, and according to the furnace wall, steam guide tube into the heated surface, starting the whole process into the basic heating furnace all normal starting situation.
This starting method, the use of water and water heat absorption reaction caused by the vapor cooling heated surface, reduce the wall temperature of the heated surface to start, the way effective. However, after the evaporation of water, the residue of the melting in the water will dissolve and settle on the wall thickness of the heated surface, start more often, when the accumulation of thickening, will cause the wall temperature of the heated surface all normal operation is high, unfavorable to the safe operation of the heated surface. Therefore, the choice of this method, the water body regulations are very high.

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Foshan Teng Hui Boiler Manufacturing Co.,Ltd.

Phone:0757-86255766

E-mail:boiler@fs-boiler.com

Address: Tan Tou Industrial Zone, Guijiao Avenue, Guicheng, Nanhai District, Foshan City, Guangdong Province

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