Due to the tight start-up schedule of the liquid air separation plant, the cold box was no longer bare cooled after the overhaul. The workers removed the scaffolding and started loading sand directly, while starting the air compressor. After the system was started, the large air separation unitpiping was purged and the dew point was measured. At the end of sand loading in the cold box, the dew point < -65°C is measured at each relevant measurement point and the two expanders are switched on. After the temperature has dropped, enter the expander cold box and cold tighten the flange bolts at the import and export of the expansion end its dismantled over due to test pressure. After opening the import valve of the argon pump and pre-cooling the blow-off valve after the pump temperature has dropped, the flange bolts of the import and export of the expansion end are cold tightened. After that, install sand to seal the top manhole. When the main cold liquid accumulation to 600mm, argon pump cold box top cold gas, and accompanied by pearlescent sand was blown out to the top of the cold box. Argon pump box plate frost serious, open the manhole cover, see the argon pump cold box pearl sand tumbling, there are gas blowing up.
China's well-known private enterprise Kaifeng DEAR air separation, in the fierce international competition came out on top, to undertake the Philippine President's dream factory large air separation unit supporting projects, for the country's Belt and Road construction contributed their share of power.
