H2S incinerator
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I need to design an acid gas incinerator with a H2S content of 70% (V/V), and the flue gases generated after combustion are to be discharged directly. What aspects should be taken into consideration? Thank you!
The SO2 concentration is too high to be discharged directly
I don’t know how much it is If there is a certain level of traffic that is relatively stable, considering the installation of a sulfur recovery unit would be advisable. Direct discharge is absolutely not allowed.
Environmental standards are certainly not being met; sulfur recovery was supposed to be implemented, but the management wanted to save on costs, so they abandoned that option and simply release the acidic gases after burning them. It was decided by the leadership; what can we do? :(
Direct discharge is not allowed; the environmental protection agency will definitely come after you. If there is sufficient capacity, considering installing a sulfur recovery unit would be an option. If space is limited, consider installing a sodium carbonate absorption unit. The furnace must take into account the complete combustion of hydrogen sulfide.
The quantity is being recycled; small amounts are neutralized and treated.
With such high hydrogen sulfide concentrations, releasing it directly after combustion – is that a joke? The consequences of doing so would likely be many times worse than those in Xiaozhaiba, Guizhou.
With such a high concentration of acidic gases, they can be used for the recovery of sulfur and sulfuric acid. If they are discharged directly through combustion, environmental standards will definitely not be met; so how can your facilities pass the inspections in the future?
They’re all shameless guys who only care about money and have no regard for their lives. China has the most such leaders – people who know nothing, are afraid of nothing, and are utterly insane! ! !
The flue gases from combustion are discharged through tall chimneys; I have seen this type of design before, and the person in charge must be quite experienced
The combustion temperature for hydrogen sulfide gas should be above 1100 degrees Celsius, and the combustion products are sulfur dioxide or sulfur trioxide, sulfur dioxide, etc. Incineration residues cannot be discharged directly. It is a matter of money, as well as something that affects future generations. It is recommended to change the unit, so as not to be the culprit who pollutes the environment and bears the blame.
1# kyzy_560 What is the data usage? If acid is produced by the wet process, there might still be some benefits in a few years.
I wonder if the gas supply is stable? Is the H2S level highly variable? It is recommended not to release it directly; there are already many successful examples of using H2S for acid production, so why not reduce pollution in the atmosphere? Furthermore, the gas must be properly purified before entering the furnace, by installing devices such as fiber foam eliminators.
For large-scale operations, WSA wet-process sulfuric acid production can be considered: hydrogen sulfide is burned to produce sulfur dioxide, which is then catalytically oxidized to sulfur trioxide, ultimately yielding sulfuric acid. The initial investment is recovered quite quickly, and this method is currently used by many companies in China. Shanghai Coking and Liuzhou Chemical are among the units that adopted it early on; other coking, steel, and petrochemical enterprises will also start using it one after another.
Oh my God! Can acidic gas at 70% concentration be directly released after being burned? ! At that concentration, Klaus has no problem at all; burning and venting can only be done after normal temperatures and low temperatures have been reached. In fact, even with the One-Constant-Three-Low MCRC standard, it’s difficult to meet the new standard of 550 that is set to be introduced soon; moreover, the exhaust gases still need to be desulfurized. With one normal and four low values, the MCRC can reach 550.
14# ygh06711 WSA process – isn’t the investment too high? In the past, when we were engaged in non-ferrous smelting, after much deliberation we ultimately gave up on WSA and opted instead for oxygen-enriched smelting; the flue gas was used to produce sulfuric acid through conventional processes, resulting in very low investment costs. Back then, Zugu Iron and Steel Company did not dare to adopt new smelting technologies; as a result, it passed on all the technical challenges, difficulties, and investment costs to WSA, which turned out to be a costly mistake. As a result, one of their executives wrote in several publications, demanding that **environmental monitoring and penalties be strengthened.