Discussion on the installation location of condensers in vacuum systems
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Experts, 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, there is consideration of replacing the water-ring vacuum pump with a dry vacuum pump. So, should the condenser be installed ahead of or behind the dry vacuum pump? Why? Known advantages of the front-end design: 1. Reduces exhaust volume, 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
Earlier, a heat exchanger was added to the exhaust port of the dry vacuum pump to reduce ethanol consumption.
You mean add it to both the front end and the back end?
It is best to add them on both the front and back side; secondary condensation on the front side, and primary circulating water heat exchanger condensation on the back side will be sufficient
Adding modifications to both the front and back makes things a bit more complicated. I visited a company’s site, and they had modifications on both sides as well, but the main processing still took place on the front side
For a dry vacuum pump like yours, a heat exchanger must be installed at the inlet side; it’s necessary in order to protect the vacuum pump. A heat exchanger with a large heat exchange surface area and low temperature at the inlet is essential, but still, solvents and non-condensable gases will be drawn in as well
Mm-hmm, the initial plan is also to add it on the frontend
Add it to the front end; adding it to the back end increases the load on the vacuum pump
Adding a personal touch at the beginning makes it better, and reduces the pump load
Adding a personal touch at the beginning makes it better, and reduces the pump load