On the evening of the 27th, an explosion occurred at the Otake Mingxin Chemical Plant in Otake City, Hiroshima Prefecture. Three staff members were injured and one of the men was s…
The low-temperature rotary valve type high-pressure helium gas with liquid nitrogen pre-cooling is firstly exchanged with the low-pressure helium gas in the first-stage heat exchanger, and then enters the liquid nitrogen precooler, and then enters the second-stage heat exchanger after …