[Ten years of major development of chemical equipment] 1021-2023 China’s first natural gas chemical relaxation and helium extraction industrial device

Because of its unique physical and chemical properties such as low density, low boiling point, good thermal conductivity, and stable chemical properties, helium is widely used in high-end equipment manufacturing fields such as aerospace, major scientific engineering, medical nuclear magnetic resonance, semiconductors/optical fibers, etc. It is a relationship* * An important strategic resource for safety, high-tech industry development and people’s livelihood and health. However, as a scarce resource, helium mainly exists in natural gas, with a very low helium content. The extraction technology and cost are extremely high, causing almost all domestic helium to rely on imports. Zhongke Fuhai is an industrialization company of the Institute of Physics and Chemistry, Chinese Academy of Sciences. It will solve the problem of * * The strategic helium resource bottleneck problem is one of the company's core tasks. Relying on the large-scale low-temperature helium refrigeration technology achievements of the Institute of Physics and Chemistry of the Chinese Academy of Sciences, Zhongke Fuhai has successfully realized the industrialization of domestic helium refrigeration equipment and formed a low-temperature industrial chain layout based on LNG-BOG helium extraction, recovery, purification and liquefaction. The helium extraction project from natural gas chemical relaxation gas that was put into operation this time is the third helium extraction unit of Zhongke Fuhai that has been successfully put into operation. This set of natural gas helium extraction equipment is the first domestic one for ammonia synthesis plants. It separates helium from the purge gas and at the same time liquefies a large amount of hydrogen in the purge gas before returning it to the synthesis tower without any loss of hydrogen. This project purifies 99.9997% high-purity helium. The equipment can operate for 8,000 hours per year, and the synthetic ammonia relief gas processing capacity exceeds 1,000Nm3/hour. All helium extraction equipment units are integrated into a skid. The core device covers an area of ​​less than 200 square meters. It uses cold recovery technology and has low operating power consumption. It is expected to produce approximately 200,000 cubic meters of high-purity helium per year.

[Ten years of development of chemical equipment] 1022-2023 Domestic Class4500 ultra-high pressure stop valve for severe working conditions https://bbs.hcbbs.com/thread-4304623-1-1.html (Source: Haichuan Chemical Forum Network)