Technology for producing hydrofluoric acid by adding water to anhydrous hydrogen fluoride
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This post was last edited by Wang Genrong on 2019-4-18 07:56. As the title suggests, I am looking for techniques to produce hydrofluoric acid by adding water to anhydrous hydrogen fluoride.
The last edit to this post was made by Wang Genrong on 2019-4-18 at 08:07. Hydrofluoric acid is generally produced by adding water to anhydrous hydrogen fluoride, using a falling film absorption process. Absorption takes place in the first-stage graphite falling film absorber, then in the second-stage graphite falling film absorber, and finally in the third-stage graphite packed tower. With stricter environmental regulations now, an additional alkali scrubber tower is usually added at the end to ensure that exhaust emissions meet the required standards. You may contact me for further discussion.
Anhydrous hydrogen fluoride, after being vaporized, enters a first-stage graphite falling-film absorption tower (equipped with a concentrated acid circulation tank), a second-stage dilute acid packed tower (equipped with a dilute acid circulation tank and a graphite heat exchanger), a third-stage water-washing packed tower (with a water supply flow meter), and a fourth-stage alkali absorption packed tower (equipped with an alkali solution circulation tank); the exhaust gas at the top of the towers is then discharged.