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Topic: Safely filter Chlorine gas.  (Read 4361 times)

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Offline jarrod0987

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Safely filter Chlorine gas.
« on: December 25, 2014, 09:29:11 PM »
If I want to safely bind chlorine gas for disposal. I am to understand activated carbon will do. I also have heard something about using steal wool. Is one better then the other?

Offline curiouscat

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Re: Safely filter Chlorine gas.
« Reply #1 on: December 25, 2014, 11:56:23 PM »
I thought a caustic scrubber was typical?

Offline Zyklonb

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Re: Safely filter Chlorine gas.
« Reply #2 on: December 26, 2014, 01:18:26 PM »
I use a sodium hydroxide solution, but I guess steel wool will work if at a high enough temperature. I've use steel wool and chlorine to make iron (III) chloride, but I doubt the absorption was complete.

Offline jarrod0987

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Re: Safely filter Chlorine gas.
« Reply #3 on: December 27, 2014, 07:43:59 PM »
I think the causitc scrubber idea sounds better. I can use Sodium Hydroxide? Or is Sodium Carb or Bicarb better? Is there any designs out that that can maximize the contact time with the solution? Perhaps I could use a PH indicator to tell me when the scrubbing solution is expended? Or should I do it through a dry packed column like co2 scrubbers?

Thank You

Offline ioncube

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Re: Safely filter Chlorine gas.
« Reply #4 on: January 02, 2015, 08:57:37 AM »
We dispose Cl2 (that is otherwise utilised in HCl synthesis & NaOCl synthesis) by channeling it to a scrubber (a vertical ~100m concrete structure which is at a suction of ~200mmH2O via blower). Scrubbing agent is hydrated CaO slurry which is circulated via pumps, it turns pink (CaOCl) & we just visually get the idea of when it's exhausted

Offline curiouscat

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Re: Safely filter Chlorine gas.
« Reply #5 on: January 02, 2015, 09:43:57 AM »
We dispose Cl2 (that is otherwise utilised in HCl synthesis & NaOCl synthesis) by channeling it to a scrubber (a vertical ~100m concrete structure which is at a suction of ~200mmH2O via blower).

100m tall? Or was that a typo?

Offline ioncube

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Re: Safely filter Chlorine gas.
« Reply #6 on: January 03, 2015, 09:38:10 AM »
No is not... we produce tons of Cl2 via membrane electrolysis. In case of any emergency that had to be purged somewhere & disposed of safely

Offline curiouscat

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Re: Safely filter Chlorine gas.
« Reply #7 on: January 03, 2015, 11:25:48 AM »
No is not... we produce tons of Cl2 via membrane electrolysis. In case of any emergency that had to be purged somewhere & disposed of safely

Very interesting. I've only seen flue stacks & distillation columns that high.

Could you post a pic? I'd love to see this. A 100 m tall concrete scrubber ain't something one gets to see every day! :)

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