The steam evacuator was replaced with a water ring vacuum pump
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The steam ejectors used in catalytic cracking units cause significant dust pollution; there are plans to replace them with water ring vacuum pumps. However, since the existing ejector equipment is old, no relevant information is available. It is difficult to determine the appropriate flow rate for the water ring vacuum pumps – please offer some advice! The pipeline for transporting the catalyst into the catalyst tank is DN150, and the catalyst addition rate should ideally be at least 1 ton per 40 minutes!
1: What is the vacuum volume? 2: From 1000 mbar ----- 500 seconds, 500---100 seconds
Water ring vacuum pumps are still widely used; just do a search online!