Information About Hydrogen Sulfide Reduction

It is true that some gases are quite dangerous, especially in poorly ventilated spaces. One example is hydrogen sulfide or H2S, which is known to be quite pungent at first. However, it quickly deadens ones sense of smell. The result is that it will go undetected until it is too late. Hydrogen sulfide reduction is therefore very vital.

It is a common off gas that is produced in the mining and steel industries. It is still fatal, even at extremely low concentration levels. It can be reduced by thermal oxidation to SO2 and SO3 for any possible utilization in other plant processes. It may be removed if it is not used for other applications.

Thermal oxidizer systems have been used by numerous industrial engineers and other people. Oftentimes, it is used to treat CS2 and H2S pollutants. After several failures or sub standard trails, many have devoted themselves to researching and product development in order to come up with thermal oxidizers that will, in fact, work.

While designing these things, there are a few limiting factors. There are a few considerations to take, and they would include blocking H2S from any possible leakage from the regenerative thermal oxidizer system. Any fatal H2S gas must be blocked from directly emitting into the immediate atmosphere as it can cause severe safety and health issues.

Consideration must also be given to the thickness of materials as well as flow design. This is with the potential of high operation pressures. Many systems have been installed and those have not taken the high pressure into consideration.

The type and metal thickness must be considered so that high outlet temperatures are obtained. The temperatures need to be above the possible condensation levels of the by products. That will cause a reduction of sulfuric acid formation within the exhaust system.

The process of hydrogen sulfide reduction continues with the generation of high pressure steam. This steam is generated with the use of the exhausts along with the high outlet temperatures. It may be used in steam operations or maybe a turbine may be powered creating offset electricity.

The stack or the inlet process line is typically equipped with ports that can allow stack testing from time to time. There are some area regulations that may need the continuous monitoring of SO2 emissions. It all depends on utility costs as well as plant size as far as the decision to apply waste heat recovery to oxiderizers are concerned.