Air separation oxygen production unit manufacturers

The newly installed distillation column must be thoroughly heated and blown off before starting and returning to work after long-term parking. After being put into operation, when the liquid suspension failure of the distillation column can not be eliminated, or the pressure difference before and after the heat exchanger pressure at the end of the operation period is more than 0.5MPa, or the purity of oxygen and nitrogen and the output decrease, it should be heated and blown off. First of all, make preparations before heating: 1) discharge the liquid in the tower; 2) dismantle the flow meter and thermometer at the outlet of oxygen, nitrogen and distillation, dismantle the upper and lower joints of the liquid air and liquid oxygen level gauge, and dismantle all the pressure gauges except the low pressure gauge; 3) close the high pressure air General inlet valve, joint-1 valve, oxygen and nitrogen products outlet valve, and the heating inlet main valve; 4) open the top rod of the inle...

When the working condition of the air separation plant is stable, the cooling capacity of the unit keeps balance with the cooling capacity consumption, and the temperature, pressure, liquid level and other parameters of each part in the unit no longer change with time. The main cooling is the bond connecting the upper tower and the lower tower. The rising nitrogen from the lower tower is heated and condensed in the main cooling, and the reflux liquid oxygen from the upper tower is absorbed and evaporated in the main cooling. When the amount of recirculation liquid is equal to the evaporation, the liquid level remains unchanged. When the processed air enters the tower, it has certain "moisture content", that is, a small part of it is liquid. Most of the air will be liquefied in the main cooling. As for the low-pressure air separation equipment, the air going into the tower is composed of the air at the cold end of the main heat exchanger and the air passing through the liquid purifie...