Hydrogen Chloride Formation

Question

Hydrogen Chloride Formation

TugboatEng (Marine/Ocean)

(OP)

24 May 24 02:04

Can hydrogen chloride be formed if sea water is present during a combustion process? I'm thinking about dissociation. More directly, is it possible to have hydrogen chloride present in the exhaust of a diesel engine operating in a marine environment?

Compositepro (Chemical) · Answer 1 · 2024-05-25 00:05:32

No. If you mean can the chloride in sodium chloride convert to hydrogen chloride. The sodium is far more attractive to chlorine than hydrogen.

TugboatEng (Marine/Ocean) · Answer 2 · 2024-05-25 00:32:43

I was thinking that if it were heated to a high enough temperature. I don't think peak combustion temperature in a diesel engine is high enough, though.

georgeverghese (Chemical) · Answer 3 · 2024-05-25 06:21:13

Organic chlorides used in detergent based enhanced oil recovery operations are finding their way into marine fuels; decomposition of these leads to corrosive HCl formation.

https://www.lr.org/en/knowledge/industry-news/2022...

TugboatEng (Marine/Ocean) · Answer 4 · 2024-05-25 15:35:13

That sounds like they're disposing of common industrial solvents such as carbon tetrachloride into residual fuel oils.

I'm asking this question with regards to saltwater contamination of diesel exhaust fluid or DEF.

KvdW (Chemical) · Answer 5 · 2024-05-26 20:33:59

Any chloride that you introduce in a combustion process will cause severe corrosion, in particular where flue gas is able to condense (exhaust pipe, stack, boiler, heat recovery economizer, …)

TugboatEng (Marine/Ocean) · Answer 6 · 2024-05-26 20:48:54

I was concerned about poisoned catalyst in the selective catalytic reduction unit based on some alarms we were seeing. The manufacturer uses some confusing terminology (deposition) that set me on the wrong path. As it turns out, the alarm condition is based on a timer and unrelated to performance.

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Hydrogen Chloride Formation