The expander plays a key role in the cryogenic oxygen plant. According to structure, expanders are divided into piston expanders and turbine expanders. Compared with piston expander, turbine expander has the following advantages: the efficiency of turbine expander is higher than that of piston expander; The circulation part of the turbine expander has no mechanical friction parts and does not need lubrication, which is conducive to the reliable operation of the air separation unit; The turbine expander can be directly installed in the cold insulation box, which can shorten the length of the pipe connected with the air separation unit and reduce the cold loss.
DEAR Air separation on scientific research is reflected in its strong support for the R&D team and a large proportion of R&D expenses: the R&D expenses of the technical center account for 4.1% of the company's total expenses. The total number of employees of the company is 331, including 85 technicians and 27 researchers from the Engineering Technology Research Center, including 4 technical leaders with senior professional titles and doctoral degrees. The engineering center covers an area of 684 square meters, and the existing equipment of the engineering technology research center is 7.3455 million yuan.
