Design of the Helium Purifier for IHEP-ADS Helium Purification System

TL;DR

This paper details the design of a helium purifier for IHEP-ADS, capable of continuous operation at 77K, removing impurities to achieve less than 5ppm purity in high-pressure helium flow.

Contribution

It presents a specific design for a helium purifier tailored for high-pressure, low-temperature operation in a subcritical accelerator system.

Findings

Purifier achieves impurity content below 5ppm.

Operates continuously for 12 hours at 5g/s flow rate.

Effectively removes oil, moisture, nitrogen, and oxygen.

Abstract

Helium Purification System is an important sub-system in the Accelerator Driven Subcritical System of the Institute of High Energy Physics(IHEP ADS). The purifier is designed to work at the temperature of 77K. The purifier will work in a flow rate of 5g/s at 20MPa in continuous operation of 12 hours. The oil and moisture are removed by coalescing filters and a dryer, while nitrogen and oxygen are condensed by a phase separator and then adsorbed in several activated carbon adsorption cylinders. After purification, the purified helium has an impurity content of less than 5ppm.