The production purpose of catalytic combustion equipment is for environmental protection. The focus is on the treatment of industrial waste gas pollution. In industrial production, a large amount of organic waste gas containing benzene, alcohol and ketone is emitted. Endanger the health of workers and pollute the environment. The catalytic combustion device provided by the catalytic combustion equipment manufacturers, as a means of treating organic waste gas pollution, has achieved considerable results in China. However, there are still some potential risk factors in the design, processing and application of catalytic combustion device. In Beijing, Shanghai, Shenyang and other places, there have been fire and explosion accidents due to ineffective preventive measures. Therefore, enough attention should be paid to the application of catalytic combustion equipment to avoid the occurrence of dangerous accidents.
Fire and explosion will occur in the heavy time device. Therefore, the concentration control standards or design specifications for the treatment of organic waste gas by catalytic combustion equipment should be unified. In addition to the above factors, the following risk factors should also be noted from a technical point of view:
1、 The lower explosion limit of organic gas is related to temperature. Generally, the higher the temperature, the faster the reaction speed and the larger the explosion range. When the concentration of organic waste gas entering the catalytic combustion device is too high, The temperature of catalytic combustion device will rise, and since the previous domestic catalytic combustion device has not been equipped with exhaust gas concentration detection and control equipment, the lower explosion limit of organic exhaust gas after the temperature rise will be smaller than the value given in the manual. In addition, due to the non-uniformity of organic exhaust gas composition mixing in the device, the explosion limit of organic exhaust gas may increase in some areas_ If the explosion limit of exhaust gas is too high, there is a risk of explosion.
2、 Generally speaking, the combustion calorific value of the organic components in most organic waste gas can be regarded as the same value under the same lower explosive limit concentration, and each 1% lower explosive limit value contains about 1868 kJ / N · m spoon. If all the components are burned, that is, the calorific value is used to raise the temperature of the waste gas itself, the combustion of 1% lower explosive limit value can raise the temperature of the waste gas by 15.3 ℃; when the concentration of the waste gas reaches 25% The temperature of the exhaust gas can be increased when the explosion limit is lower than the explosion limit. The manufacturers of catalytic combustion equipment remind you to keep these problems in mind at all times.