Film evaporator and falling film evaporator
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There is currently a falling film evaporator (with a heating area of 600 m2) that carries out evaporation and vaporization at a temperature 15°C below the boiling point of the solution, thereby reducing the partial pressure to achieve separation. If a wiped-film evaporator is used, vaporization can take place under boiling conditions to achieve separation. Can a film-evaporator be used to replace this falling-film evaporator? (The maximum heating area of a film-evaporator is only 100 m2.) Question: Can the heat transfer coefficient under boiling vaporization reach 6 times that under evaporative vaporization? If so, film evaporators could be used in place of falling film evaporators.
This post was last edited by jinjinaaaaaaaa on 2018-2-28 at 16:43. I found a similar example; the heat transfer coefficient for evaporation only (without boiling) is around 213 W/m2·°C. According to chemical engineering handbooks, the heat transfer coefficient of typical scraper evaporators can be as high as 1750–7000 W/m2·°C. It can be seen that it should be possible to achieve the use of a scraper evaporator in place of a thin-film evaporator (non-boiling vaporization) as mentioned above. Please give me some advice!
Sure, it’s best to use molecular distillation equipment; my film-evaporation evaporator can achieve a maximum heating area of 200 square meters. 183-07043628
Molecular distillation equipment and rotary film evaporators feature high thermal energy utilization! ! !
Does the heat exchange area of the thin-film evaporator reach 100 square meters? How big is it?
The exaggerations are amazing – lol
I discussed this with Wuxi Limi Huaji; they are capable of handling up to 100 m2, so it should be possible
Traditional molecular distillation equipment costs 50,000 per square meter; my version of molecular distillation equipment, which doesn’t require a motor or scrapers, only costs 20,000 per square meter. Traditional thin-film evaporators cost 20,000 per square meter, while my version of thin-film evaporator, which also doesn’t need a motor or scrapers, costs only 12,000 per square meter. It’s also more energy-efficient and requires no maintenance – the maintenance cost is 0.18307043628
Is it a molecular distillation unit that doesn’t require scrapers or a motor? Self-flowing? How is efficiency ensured? How is the separation efficiency ensured? Stop talking nonsense here;P
You’re always here attacking others; the effectiveness can be proven through experiments, so it’s necessary to use pilot-scale equipment for such experiments. . . . . . .
I saw on their website that it’s 50 square meters; if it were 100 square meters, it would really be a huge space.