Compressor
Thread Content
The stone wall phenomenon in propylene compressors refers to
The stone wall phenomenon occurs in centrifugal compressors; similar to surge, once a stone wall appears, the pressure no longer increases
The surge curve of a centrifugal compressor is an important parameter for ensuring its proper operation. It’s similar to human breathing: if you cover your nose and mouth, no air can enter, and it becomes difficult to breathe; one has to exhale forcefully through an open mouth. After a minute, one can no longer tolerate this situation and also starts to struggle to breathe. Therefore, centrifugal compressors must have limits set at the lowest pressure with maximum flow rate, as well as at the highest pressure with minimum flow rate
A shock wall generally occurs at a certain stage of the compressor; when the flow velocity at that stage reaches the speed of sound, the flow rate at that stage can no longer increase, and thus a shock wall is formed.