How to determine the operating efficiency of a chlorine water scrubber tower?
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This post was last edited by sunjl1981 on 2013-1-6 at 23:56. Experts: In 2007, our facility installed a chlorine water scrubber for the 100,000 tons per year membrane caustic soda plant, with the aim of purifying chlorine gas by reducing the levels of sodium chloride, ferric trichloride, and nitrogen trichloride in it. However, the effect may not be significant: for example, the silica gel used in the sulfuric acid mist remover accumulates sodium sulfate powder at a rapid rate (we replace it every 3–4 days), and the concentration of nitrogen trichloride in the chlorine gas is often between 20–30 PPM (while the total amine content in the brine fed into the electrolytic cell is 0.8–2 mg/l)； Furthermore, we analyzed the chlorine water coming out of the scrubber and found that the sodium chloride content was 0.5 g/l; we’re not sure whether this figure is accurate So far, we are unable to draw a conclusion regarding the operating performance of the chlorine water scrubber tower. I would appreciate everyone’s advice! Thank you! # hcbbs
There is information on this topic in the forum; it is recommended that the original poster improve the mist removal efficiency of the exhaust gas from the chlorine water scrubber, which will solve the problem. The issue lies not with the chlorine water scrubber itself, but rather with the poor performance of the mist collector located after the scrubber.
The first phase of our plant’s 100,000-ton chlorine reduction facility has been in operation for a year without any occurrence of the phenomenon you mentioned. The water and acid mist capture equipment used there is different from that in your plant – it is imported from Germany; I recommend replacing the equipment. The concentration of elemental chlorine, NCl3, in our plant is only 0.55 PPm. This post was last edited by yzhms on 2009-4-13 at 18:12
This post was last edited by limingshuguang on 2009-7-2 at 16:50. The 100,000-ton chlor-alkali production facility in our plant has been in operation for a year without any occurrence of the phenomenon you mentioned. The water and acid mist capture equipment used there is different from that in your plant – it is imported from Germany; I recommend replacing the equipment. The concentration of elemental chlorine, NCl3, in our plant is only 0.55 PPm. This post was last edited by yzhms on 2009-4-13 at 18:13
The effectiveness of glass wool has no direct relation to chlorine water scrubbers; the accumulation rate of sodium sulfate-containing powder in the silica wool used in sulfuric acid mist eliminators is related to the drying tower
There is likely a problem with your drying tower; check whether the diameter of your tower matches your gas flow rate.
There may be issues with the operation of the drying system
It is recommended to check the effectiveness of the mist collector; that is where the problem lies
I agree with the opinions of those above; sampling and analysis of the aforementioned equipment at the export site are needed to confirm this further.
Thank you very much to all the experts for their responses! We will conduct a thorough inspection of the entire chlorine treatment system. Excuse me, on the 3rd floor: Which German company supplies the cotton for the water and acid mist capture equipment used in your facility? Can you tell me? Thank you!
The content of nitrogen trichloride has little to do with the washing in the water scrubber tower. It should be addressed at the source. Such as raw salt, water, etc.
11# 1qaz2wsx3edc The NCL3 in wet chlorine gas can have part of it washed away in the scrubber tower
Reply to floor 12； Then the water temperature must be above 70 degrees. But only a very small portion is washed.
Does the tower diameter match your gas flow rate?