Looking for information on the selection and configuration of liquid oxygen pumps
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Does anyone have any information on the selection and specification of liquid oxygen pumps, such as their structural features and details about the manufacturers? I looked on the forum for the relevant date, but it seems there isn’t much useful information available
The current manufacturers of liquid oxygen pumps are Cryostar; followed by Cryomec, then ACD, followed by Sefco, and finally the domestic company Dalian Deep Blue
It was already mentioned on the 3rd floor: it’s about the ranking of liquid oxygen pump manufacturers. Cryostar is the best choice, followed by Cryomec. . The several major air separation processes that ACD has gone through are rarely seen; usually, these processes are referred to as references for one another. Rich state-owned enterprises use Cryostar, while those looking to save costs opt for Cryomec. . The quality is excellent; we now use Cryomec, and the results are good as well. 2 units, with 1 as a spare, for a total of 3
In fact, there are no particularly specific standards for liquid oxygen pumps, liquid ammonia pumps, or Freon pumps. Firstly, such pumps need to be able to withstand low temperatures; secondly, they must be able to handle pressure, as long as the outlet pressure is sufficient. There is no requirement regarding the specific type of pump that must be used. Centrifugal pumps can be used, and positive displacement pumps can actually also meet the requirements. It’s just that many manufacturers are not involved in this industry. Pumps for transporting such liquid gases can be multi-stage centrifugal pumps, canned pumps, or diaphragm pumps – any of these can be used.
The main manufacturers of liquid oxygen pump inlet components at present are Cryostar and Cryomec. In particular, ACD, which produces high-pressure pumps for the coal chemical industry, also manufactures cryogenic pumps; however, its SEFCO models do not have high pressure capabilities. These products are not used very often in recent years due to the associated risks. In China, they are employed mainly in applications such as tank cleaning and bottle filling, as well as as backup pumps. Hangyang Pump Valve, Xinya, and Dalian Shenlan have very limited achievements in the air separation industry
ACD can only produce single-stage liquid oxygen pumps; there are currently no records of multi-stage pumps being manufactured by them. They are currently working together with Sulzer to use deep well pump technology to develop multi-stage cryogenic pumps for ACD. There shouldn’t be any major technical issues, and with proper market demand, they will be able to compete with companies like CryoStar in no time!