Color coating wire harmful gas central incineration residual heat utilization

A harmful gas and color coating line technology, which is applied to the surface coating liquid device, coating, incinerator, etc., can solve the problems of polluting the environment, energy consumption, etc., and achieve the goal of reducing heat emission, saving costs, and solving environmental pollution Effect

Active Publication Date: 2012-11-07
北京星和众智科技有限公司
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Problems solved by technology

[0003] In order to overcome the problems of environmental pollution and high energy consumption in the original waste gas treatment, the present invention adopts the method of cracking the waste gas to avoid polluting the environment and making full use of the heat energy after cracking, and supplying the generated heat energy to the whole production line with a heat exchanger. Heat energy required to save energy to meet production needs

Method used

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  • Color coating wire harmful gas central incineration residual heat utilization
  • Color coating wire harmful gas central incineration residual heat utilization

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Embodiment Construction

[0010] Concentrated incineration waste heat utilization of harmful gases in the color coating line is composed of exhaust gas incinerator 4 and exhaust gas preheater 5, etc. The exhaust gas at about 250 ° C from the primary coating furnace 2 and finishing coating furnace 3 is drawn by the induced draft fan through the exhaust gas preheater 5 After preheating to about 350-400°C, send it to the exhaust gas incinerator 4. After heating to the cracking and incineration temperature above 733°C, a large amount of heat energy greater than 650-700°C will be generated, and the fresh air will come from the first stage of the exhaust gas of the curing furnace containing very little exhaust gas. Heater 6 replaces the hot air at 420-450°C to supply the primary coating furnace 2 and the finishing coating furnace 3 for heating. The control of the furnace temperature is realized by PID. A spare burner is installed on the heating head of the furnace 3 to adjust the temperature, and the heat sup...

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Abstract

the present invention provides a method for utilization of waste heat of harmful gas central incineration of coating line, comprising feeding the generated waste gas in a primary coating furnace (2) and an accurate coating furnace (3) into a waste gas incineration furnace (4) to burn; feeding the heat generated by the burning cracking to other place of the product line by classification with a primary heat exchanger (6) and a secondary heat exchanger (7) to satisfy requisition of the product line. Each heat source is shown in the figure 2, heat supply from the waste gas is a fixed value, eachsupply point is equipped with a combustion machine, the temperature requirement is controlled by controlling the heat supply in the combustion machine to satisfy temperature regulation requirement ofthe product line. The invention not only resolves environmental pollution problem, but also fully uses energy source, which resolves heat source supply problem in the coating line production.

Description

technical field [0001] The invention belongs to the field of color-coating line production of steel plates in the metallurgical industry, and in particular relates to the production field of harmful gas treatment in curing furnaces of color-coating lines. Background technique [0002] The color-coated board production line is mainly divided into two categories according to the purpose, one is used for roof panels in the building materials industry, and the other is used in the home appliance industry. For panels used in the building materials industry, direct heating and drying methods are generally used, while for panels used in the home appliance industry, indirect heating and drying methods are generally used. Both direct-fired heating and indirect heating will consume a large amount of non-renewable fossil resources. In the fine coating section, after the paint on the steel plate is heated and cured, a large amount of toxic gases such as benzene, toluene, and xylene, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D3/02F23G7/06
Inventor 汪为健
Owner 北京星和众智科技有限公司
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