The problem of compressing a mixture of nitrogen and chlorine gases
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We have a current operating condition in which nitrogen makes up 85% and chlorine 15%; the gas needs to be compressed to around 2 MPa. Reciprocating compressors are the only option available. We have consulted many manufacturers, but none of them have any experience with similar applications, although they all believe that such compressors can meet the requirements. I would like to ask the experts: in the absence of similar project examples, is this approach feasible? Is there any risk of creating unpredictable situations through the combined compression of nitrogen and chlorine (such as the formation of the flammable and explosive substance nitric trichloride)? ）
This post was last edited by CHANGBAISHI on 2020-11-11 at 16:38. It would be good to determine the operating conditions of the machinery used based on the physical and chemical properties of this product. For example, hydrogen and other flammable and explosive gases can also be compressed. But it must meet its usage conditions. When selecting equipment, it is also important to consider whether mechanical friction is permitted; centrifugal, piston, and other positive-displacement air pumps should be chosen in accordance with their required physical and chemical properties. For reference.
Can’t we compress each one separately and then mix them?
Nitrogen and chlorine do not react, so a centrifugal compressor can be used; manufacturers include Siemens and SHENGU, among others.
It won’t explode, right? Even if the substance you mentioned is produced, it won’t explode without the right conditions
When a large gas volume is required, a multi-stage centrifugal compressor is chosen, with inter-stage cooling to prevent excessive compression temperature rise. A high nitrogen content results in a large temperature rise during compression, which requires special attention. When the gas volume is small, a multi-stage reciprocating compressor should be selected, with inter-stage cooling to prevent excessive compression temperature rise. Moisture content is a sensitive factor for corrosion; it is generally required to be below 50 ppmv, with 30 ppmv being the ideal level.