Speaker
Description
The helium recovery and purification system at the IHEP is build to recover and repurify helium containing 10% water saturated air at a rate of 210 Nm3/h and a pressure of 1.05 bar to a contaminant level below 5ppm. Low pressure gas is recovered through a pipeline from the BEPCII cryogenic system， ADS-inject I cryogenic system，and other cryogenic equipment test which evaporate the impurity helium gas.
The impurity helium gas, which is compressed from 1.05bar to 200bar with the flow rate of 210m3/h, are compressed into impurity gas cylinder. The impure helium gas is purified to the purify helium, which are stored in the purified helium gas cylinder, by the LN2 cooled adsorber. Total LN2 consumption is 200L/h. When any buffer tank need the helium gas, the system can distribute the purified gas helium from the purified gas cylinder to the A，B，or 1# tank.