The temperature of the two-stage distillation tower at the top of the upper tower is related to its nitrogen discharge concentration and pressure. The temperature of the top of the upper tower can be checked from the gas liquid equilibrium diagram according to the top pressure and nitrogen concentration of the upper tower. When the upper tower pressure is constant, the higher the nitrogen discharge concentration, the lower the corresponding saturation temperature. Since there is such a relationship between the upper tower temperature and nitrogen purity, the nitrogen purity can also be judged from the upper tower temperature.
In the KDON-300/3000 (100Y) air separation plant of Shandong Kenli Petrochemical Co., Ltd. supplied by Kaifeng DEAR Air Separation Plant, Deer Design and Research Institute independently developed a gas monitoring terminal system with the function of self-organization network, which is composed of a combustible gas alarm host designed and manufactured by Deer Air Separation Plant+combustible gas detector+toxic gas detector+gas solenoid valve and other external linkage equipment+corresponding auxiliary signal modules, The management card and channel card can be flexibly configured according to actual needs. The gas monitoring terminal system and wireless combustible gas detector designed with independent plug-in card provide the safety of equipment operation and reduce the probability of accidents.
