Questions about propylene refrigeration compressors

Thread Content

This post was last edited by Vinyl Noob on 2020-8-26 22:01 bg16.jpg As shown in the figure, the schematic diagram of the suction tank of a propylene compressor of an ethylene plant has the following three problems. I hope that the seniors in the industry will give you some advice. 1. The No. 1 pipeline in the picture is said to be a quenching line according to the master (I have seen a quenching line of a propylene machine of an MTO device with a valve). There is no valve in the pipeline here. How can it achieve a quenching effect when it needs to be used? 2. The size of the No. 2 pipeline in the picture is DN40. I have been looking at this pipeline for a long time and I don’t understand what it does. 3. In the picture, pipeline No. 3 passes through the cooler and then returns to the suction tank. It seems to be the principle of thermosiphon, but it feels a bit far-fetched (the temperature does not change much).