Hydrogen Sulphide is a gravely dangerous gas that can cause too many complications, diseases and disorders ranging from breathing trouble to death. Therefore, it is very important and essential to control the presence of this gas inside a combustible environment in the best interest of the people as well as the equipment involved in the process.
Before we analyze the process of detecting and removing H2S from the combustion environment, we have to study about the obvious disadvantages of the gas itself.
Hydrogen Sulphide is a highly toxic and corrosive gas that is usually odorless. At times, it can also bear a rotten egg smell. Since it is corrosive, it can break down pipelines and other structures when its concentration increases a particular value. And also, since it is flammable, it can burn very easily. Since it is toxic in nature, prolonged exposure of the gas can cause severe diseases to human beings.
The following is a list of disorders that H2S causes to people at different concentrations.
• At 10-20 ppm, H2S is not that harmful and it causes eye irritation.
• Then at around 50-100 ppm, the gas causes throat pain, eye damage, shortness of breath and even pneumonia.
• At around 150 ppm, the gas causes a temporary loss of smelling sensation.
• When the value exceeds 200 ppm, various symptoms like nausea, dizziness, vomiting, edema and even lung damage can occur. Exposure to the same concentration for around 4-6 hours can even lead to death.
• When the value exceeds 350 ppm, the same symptoms listed above will occur. But the time of death will be even more acute and people will die within 1-3 hours when they are exposed to H2S gas of this concentration.
• If the concentration of H2S exceeds 500 ppm, the time of death will be less than an hour.
To control these sorts of problems, you need a fully fledged Hydrogen Sulphide Analyser. Various countries have devised different standards when it comes to a H2S analyser. For instance, in the United States of America, the maximum threshold value that must be set in a H2S analyser is 50 ppm.
But, then again, for small scale companies setting up a large industry standard analyser is literally an impossible job. That is why these companies can go with an easier and extremely cheap method for analyzing the presence of Hydrogen Sulphide – paper tape analysers that makes use of a lead acetate paper tape to detect H2S presence.
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