Negative energy consumption dioxin emission reducing system of sintering machine and method thereof

A technology of dioxin and energy consumption, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of difficulty in large-scale promotion, unsuitable sintering, high operating costs, and achieve obvious energy-saving effect and emission reduction. Improve the effect and ensure the effect of the same quality

Inactive Publication Date: 2010-09-15
BAOSTEEL ENG & TECH GRP
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Problems solved by technology

[0003] At present, the existing dioxin emission reduction technologies mainly include methods such as rapid cooling, activated carbon adsorption, high-temperature oxidation, and cat

Method used

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  • Negative energy consumption dioxin emission reducing system of sintering machine and method thereof
  • Negative energy consumption dioxin emission reducing system of sintering machine and method thereof
  • Negative energy consumption dioxin emission reducing system of sintering machine and method thereof

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] see first figure 2 , a sintering machine negative energy consumption dioxin emission reduction system of the present invention is mainly composed of switching valve 1, switching valve 2, air mixing valve 3, dust collector 4, switching valve 5, waste heat boiler 6, switching valve 7, bypass Pipe 8, switching valve 9, bypass flue 10, circulating smoke pipe 11, circulating fan 12, circulating smoke hood 13, dust collector, fan, desulfurization tower and chimney.

[0051] The present invention divides the exhaust box at the lower part of the sintering trolley into a high-dioxin area and a low-dioxin area, collects the flue gas generated in the high-dioxin area separately, and then circulates this part of the flue gas to the upper part of the sintering machine as a Combustion air, dioxins are decomposed at high temperature, so as to achieve the purp...

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Abstract

The invention relates to a negative energy consumption dioxin emission reducing system of sintering machine and a method thereof. The system comprises a main flue, a dust remover, a bypass flue, a circulating flue, a circulating fan and a circulating gas hood. A high-concentration area wind chamber is arranged in an area accounting for 55 to 95 percent of the length from a sintering machine head to a machine tail of a sintering machine trolley; a low-concentration area wind chamber is connected with the main flue to reach a flue sequentially from the dust remover, the fan and a desulfurizing tower so as to exhaust smoke into air; a circulating gas hood is covered above the sintering machine trolley; the high-concentration area wind chamber is connected with the circulating gas hood through the circulating flue; and the circulating flue is provided with the dust remover and the circulating fan. The method comprises the following steps of collecting the smoke, removing dust, mixing the smoke of the low-concentration area with the smoke of the high-concentration area to remove the dust, performing desulfuration on the smoke, exhausting the smoke into the air and the like. The system has the advantages of simple and convenient construction, installation, operation management and maintenance, shorter construction period, the negative cost operation for emission reduction of the dioxin, and obvious energy-conservation and emission-reduction effects.

Description

technical field [0001] The invention relates to the emission reduction of dioxins in the sintering process of the metallurgical industry and the recovery and utilization of waste heat of high-temperature flue gas from sintering machines, in particular to a dioxin emission reduction system with negative energy consumption for sintering machines in the sintering process of the iron and steel manufacturing industry and its method. Background technique [0002] Dioxins are the general term for polychlorinated dibenzodioxins and polychlorinated dibenzofurans. They are difficult to degrade and easy to bioaccumulate. They are the most carcinogenic substances that have been discovered so far. The International Center for Cancer Research has List it as a first-class human carcinogen. According to analysis, sintering dioxin emissions account for about 95% of the total emissions of the entire iron and steel industry; therefore, dioxin emission reduction in the iron and steel industry ...

Claims

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Application Information

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IPC IPC(8): B01D53/70B01D53/48F23J15/02
Inventor 张传秀刘旭华刘平吴伟王彦宁冀蓉王永忠
Owner BAOSTEEL ENG & TECH GRP
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