What are the reasons for the poor quality of the depleted liquid after regeneration?
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The designed circulation rate for the double-efflux regeneration tower is 200 tons per hour, while the actual circulation rate is 125 tons per hour. The operating pressure of the tower is 0.075 MPa; the bottom temperature is 121.7°C and the top temperature is 113°C. The sulfur content in the depleted liquid after regeneration is 0.1020%. How can the quality of this regenerated depleted liquid be improved?
The quality issue of the lean liquid in the regeneration tower generally requires checking the carbon dioxide content in the absorbed gas phase. When the carbon dioxide content is not high, the top and bottom temperatures of the regeneration tower can be appropriately reduced, and more steam can be used, which can effectively improve the quality of the lean liquid. Of course, the number of trays in the regeneration tower and other design factors are also important.
Reply 2# SHIBIN1: Was it already like this when the device started operating? The reasons for this are as follows: 1. The tray has flip plates; 2. The orientation of the guide valve trays is reversed; 3. There is a leak in the rich-lean liquid heat exchanger, causing the rich liquid to mix with the lean liquid