How to handle hydrogen exhaust gas
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This post was last edited by middle_kNagT on 2021-9-30 at 12:00. Request for help: Electroplating generates hydrogen at a rate of up to 32 L/h and 2.6 g/h, as well as a small amount of nitrogen oxides. Is this dangerous? How should these exhaust gases be treated?
Are there any without safety assessments or environmental impact assessments? Nitrogen oxides are air pollutants that require treatment using a spray tower. Hydrogen is also sprayed out for removal. The tower requires nitrogen purge for protection, and a lightning rod should be installed at the smoke outlet
If there is a residual pressure of at least 1 KPaG, a water seal can be installed; thereafter, a stove burner can be used to boil several pots of water, thus making the most of this setup.
Hello, we are still in the planning stage. For a small electroplating tank, is it a bit complicated to install things like a spray tower and lightning rods? Is there a simpler solution?
Ignoring environmental protection can result in factory closures at the least, and imprisonment at the worst
This hydrogen can be directly released into the atmosphere, while nitrogen oxides need to be treated
To reiterate, my reply regarding Building 3# was not a joke; it referred to a simple and practical method for dealing with small amounts of hydrogen and NOx emissions, where the furnace bed functions as a kind of basic ground-level torch. It would be even better to add a suction hood above the furnace tray and exhaust pipes leading to a high point for discharge.
The boiled water is practically useless and only adds to the workload. Creating an open flame increases the risk. Burning is useless for removing nitrogen oxides. Adding urea or other substances to the water seal can be somewhat effective in removing nitrogen oxides
An electroplating plant is not a petrochemical plant, and the industry standards applied there also differ. The exhaust volume is at most 32 L/h and 2.6 g/h; with such a low level of exhaust, there’s no need for excessive strictness as long as the nitrogen oxide concentration isn’t very high. This amount of exhaust isn’t even enough to heat a pot of water per hour – it’s less than the gas consumption of a household stove. Moreover, household stoves don’t require safety or environmental impact assessments before being used, nor are there any emissions checks while cooking.