Exhaust gas scrubber tower
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1. Gentlemen, which company manufactured your exhaust gas scrubbers? What is the structure, and what is used as the leaching solution? How is it working?
These days, exhaust gas scrubber towers are generally made of fiberglass, and the cleaning solution is usually calcium hydroxide or sodium hydroxide, with only differences in concentration We use 15% sodium hydroxide, while Xinguang uses 10% calcium hydroxide! The effect is pretty good! The chlorosilane gas has been essentially removed; the gas after washing has almost no odor when released!
Isn’t calcium hydroxide slightly soluble? Could it be a suspension?
It’s just a turbid liquid! Stirring must be continuous in the alkali solution tank! If it’s in the pool, bubbles need to be generated continuously!
2# yanghening00 Oh, can that hydrolysate be controlled? Are there any other good methods? Thank you
Lime milk or 15% NaOH solution, 3# Minos
Generally, 10% calcium hydroxide or 15% sodium hydroxide is used; each of them has its own advantages. Calcium hydroxide has low solubility, so the slurry prepared from it needs to be continuously stirred in the storage tank, while in the case of the recovered slurry, bubbling is used to create circulation for use in the scrubber tower； Although sodium hydroxide has a high solubility, it easily forms silica hydrates, which can cause pipe blockages.
The scrubbing tower is made of fiberglass; it’s best to use a material that can prevent the generation of static electricity. The scrubbing liquid can be either recycled water from wastewater treatment or the concentrated water from desalination processes. Since lime is usually added during wastewater treatment, no alkali needs to be added when using this water for spraying, allowing for savings in tap water usage and reduced production costs. Moreover, the absorption efficiency is quite good!
Leaching towers are basically made of fiberglass, with some baffles inside; alkali washing is generally used
Made of fiberglass, using a sodium hydroxide solution at about 10%; its weakness is that the hydrolysis products it produces tend to cause clogging.
Sodium hydroxide solution is used; the concentration is unknown and will depend on the circumstances.