Feed the ammonium nitrate into the melting pot, add a small amount of water and catalyst, and use electric heating to melt the ammonium nitrate into the liquid state.
Then the material is injected into the reactor by the feeding pump, and the ammonium nitrate decomposes in the reactor where the temperature, pressure and liquid level are kept stable under the control system. The decomposition products enter the condenser for cooling, and the condensable water is discharged.
The cooled non-condensable gas N2O, etc. is washed by a multi-stage purification tower to remove impurity gases and then enters the buffer gas holder. After being pressurized by the compressor, impurities such as moisture being deeply removed through a multi-stage dry adsorber, and then being condensed and liquefied in a high-pressure condenser, it is at last stored in a low-temperature storage tank.
The industrial-grade liquid nitrous oxide from the storage tank enters the distillation tower after pre-cooling, and the light impurities are discharged from the top of the tower along with the gas phase. The purified liquid is transferred into the high purity storage tank after heat transfer by the cryogenic liquid pump, and the high purity product is filled with the cylinder through the filling pump.
Inspection report of food/medical grade nitrous oxide