Vacuum pumps for atmospheric and vacuum distillation: manufacturers and usage status
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Our company is carrying out renovations to its vacuum extraction system for atmospheric and vacuum distillation; we would like to know more about the current manufacturers and users of vacuum pumps. Please help us by recommending some options, especially those related to screw vacuum pumps. Those who have relevant information are asked to get in touch with me. Thank you. .
Domestic brands include Foshan water pumps and Zibo vacuum pumps, while imported brands include Puxu vacuum pumps, Leybold vacuum pumps, Beck vacuum pumps, etc
We use Graham’s model, which is of the water-ring type; it operates very stably and has hardly ever needed repairs.
No need for steam spraying; just use a water ring
My brother would like to ask you: what is the performance of steam injectors in industrial applications at present, and what is their energy-saving efficiency? . . The project I was working on focused on using ejectors for vacuum creation. It seems that most of the literature available online dates back to the 1990s, and much of it is nonsense regarding how ejectors can replace mechanical pumps in cold cycles; to this day, there’s no evidence that such replacement has actually taken place
We use Haimen Longying; depending on the medium, water-soluble media make it unsuitable to use water ring pumps, as otherwise the circulating water would need to be treated. You can choose a single unit or a set of units.
You might want to take a look at Kesselnash’s water ring vacuum pump systems; we have carried out many technical upgrades on them, and they are performing quite well
To save energy, mechanical methods are now used in place of spraying; do you still want to go back to the old method?
For water ring pumps: domestically – Foshan, Zibo, Bozhong; internationally – NASH, SIHI
OP, how much pressure or vacuum do you need? A standalone water ring pump generally cannot achieve the pressure requirements of a vacuum distillation tower ； And the pumping capacity of screw pumps is limited. If a steam ejector is not used at the first stage, what else can be used?