Gas desulfurization process: flow direction of materials on the liquid cutoff tray in the regenerator tower

Thread Content

I have been researching the gas desulfurization process known as the vacuum potassium carbonate method recently. There isn’t much information available on this topic, and there is one aspect I haven’t understood, so I’m reaching out to ask for advice from everyone. The rich liquid is sprayed at the top of the regeneration tower, where it comes into contact with the water vapor rising from the bottom of the tower, thereby enabling desorption and regeneration. Acidic gases exit the tower from the top; according to the process flow, the lean liquid should exit the tower from the bottom. However, the equipment diagram of the regeneration tower shows a liquid cut-off disk in the lower part of the tower. Based on the function of this liquid cut-off disk, the lean liquid should exit the tower through the outlet pipe associated with it. So how does it manage to exit the tower from the bottom, bypassing this liquid cut-off disk? . .