Can hydrogen-containing waste gas be discharged directly?
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There is a project recently that involves a hydrogenation process; after hydrogenation, the hydrogen contains organic compounds and other impurities. After purification, the hydrogen is reused, but it is necessary to discharge a certain amount of hydrogen periodically or irregularly (the current estimated discharge rate is 40 Nm3/h). In addition, a safety valve is used to discharge some of the hydrogen as well. Consideration is being given to using flares for the combustion treatment of waste gases; currently, there are suggestions that they can be released directly (after the pollutants are purified to meet standards). May I ask: Can it be discharged directly? If it is discharged directly, how can safety be ensured?
Discharging it directly is an irresponsible approach; it is recommended to burn it outright
For direct flame combustion and emission, some steam needs to be mixed in, right?~~~~
Wasting resources； Direct discharge can lead to fires and explosion accidents, so it cannot be discharged directly.
It cannot be discharged directly; it can be fed into a gas heating furnace for combustion. The waste gases generated from the production of hydrogen from methanol are fed into a heat transfer oil furnace for combustion.
It’s fine if the chimney is a bit taller; after all, with hydrogen, a small amount of emission is not a problem, as hydrogen tends to accumulate at higher altitudes.
Thank you all for your suggestions. I am currently looking for manufacturers who can produce torches, and I will ask them to help handle this matter
:(Our company installed a PP pipeline directly to the highest point of the equipment for venting; over ten kilograms are released per hour)
Hydrogen and nitrogen are released together; hydrogen is not considered a pollutant and will drift into the atmosphere, as Earth’s gravity cannot retain hydrogen
Direct discharge is fine; the reaction vessel is connected to a gas-liquid separator, as well as water seals 1 and 2, so direct discharge is possible. It has been operating safely for five years, but the issue of unpleasant odors remains unresolved. An RTO was installed in 2022