Application Of Infrared Thermal Imaging Temperature Measurement In Ethylene Cracking Furnace Temperature Detection

Ethylene production is the basis of the petrochemical industry, highly automated modern petrochemical industry, making our daily production process of the production equipment requirements are also increasing.In the ethylene production process, the operating level and the duty cycle of the ethylene cracking furnace is also directly affects the production efficiency and yield of ethylene.However, due to traditional manual observation accuracy is poor, and the contact temperature measurement is difficult to complete the ethylene cracking furnace area, the whole point, high-precision real-time temperature measurement,Planck’s blackbody radiation law we as the basic principles of non-contact temperature measurement colorimetric technique that emerged in this case.This thesis introduces the basic principles of infrared imaging temperature measurement, as well as the basic theory of blackbody radiation Planck’s law gradually starting from the theoretical analysis to derive the final temperature than the color temperature of the formula.Then Guangzhou Petrochemical, for example, ethylene production facilities in the process of transformation, we set up two sets of pre-hearth furnace temperature endoscopic security monitoring and analysis system on the B1110D cracker,The system can be used for comprehensive monitoring of the combustion chamber and the furnace temperature field, according to the site collection of continuous, stable, real-time data is processed on a computer to get real-time operating temperature, then its actual thermocouple a temperature comparison. Two sets of data as a basis for comparison of various parameters to debug infrared camera, video camera so that we come through the gray image reflected temperature close enough to the real temperature.In this case, we have a production cycle of the data for statistical processing, and ultimately achieve our furnace temperature real time, accurate and stable measurement results.While the temperature data based on the measurement results we compare the collected statistics, the curve can be accurately obtained for normal operation cycle time and temperature.To meet the diverse needs of ethylene feedstock optimization, production of raw materials for the production of ethylene by light diesel oil and naphtha mainly based, becomes at the same time you can use hydrogenated tail light hydrocarbon oil furnace and stove. This can save the cost of raw materials to improve the economic efficiency of enterprises.Currently, the technology successfully applied B1110D type cracking furnace tube temperature detection can be achieved on a large area of he furnace tube, the whole point, high-precision, continuous, real-time temperature measurements, and can give the temperature curve.After101days of continuous measurement system to measure the temperature measured with a thermocouple actual site geodesic temperature has good similarity.Showed that infrared thermography technology and colorimetric temperature cracking furnace tube temperature in the detection of not only conducive to achieving real-time monitoring, and improve work efficiency, economic efficiency, product quality and production safety have a broad application prospects.