Discussion on the installation location of condensers in vacuum systems
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Expert, the factory uses single-effect concentrators to concentrate materials under low pressure in order to recover ethanol. A water ring vacuum pump is used for vacuum pumping. Currently, the ethanol recovery efficiency of the single-effect concentrator is too low; therefore, it is planned to add a condenser to recover ethanol. At the same time, considering replacing the water-ring vacuum pump with a dry vacuum pump, it is worth asking whether the condenser should be installed ahead of or behind the dry vacuum pump Why? Known advantages of the front-end design: 1. Reduces the amount of air drawn, thereby lowering the load on the dry pump. 2. Prevent ethanol vapor from entering the pump chamber to avoid damaging it. Known advantages of the backend: It can be cooled directly using cooling water
It is recommended to move this to the process section. Your idea of adding a condenser is excellent; it can improve the yield. The condenser should be placed before the vacuum pump. The advantages are as follows: 1. It enhances the efficiency of the pump, increases the vacuum level, and thus boosts the yield of alcohol. 2. It prevents alcohol from entering the vacuum pump, as otherwise, when alcohol gets into the water ring pump, the wastewater becomes difficult to treat, and there are also significant safety risks. Recommendation 1: Use two-stage condensers, with circulating water and 7-degree water. Recommendation 2: Replace the vacuum pump with a W3 reciprocating vacuum pump, as it is simple to maintain and has low costs
Thank you. I plan to replace the water ring pump with a dry pump, which can directly draw in and exhaust air; there is also a vacuum buffer tank in front of the pump to prevent liquid from entering the pump chamber.
I have a gentle question: do you work with equipment or with manufacturing processes?
Neither. I’m the user; I just encountered this problem and wanted to ask the experts for advice.