Have you ever wondered why natural gas smells differently from one place to another? While the mercaptan family compounds are the most used to odorize natural gas, other chemicals, and blends of compounds satisfy specific applications.
Have you ever wondered why natural gas smells differently from one place to another?
The government requires natural gas to be odorized as a safety measure since it is combustible and odorless. An odorant is introduced via chemical vaporization or chemical injection. We further share the advantages and disadvantages of various odorization systems, whether wick-type, bypass, pulse bypass, drip injection, or pump injection systems.
An essential aspect of any odorization system is the selection of odorant. Selecting the proper odorant requires an in-depth understanding of the gas (being odorized), the odorization system layout, and ambient conditions. It is also essential to understand what chemical is used to odorize any nearby gas systems. Odorant manufacturers often recommend staying with an odorant utilized in neighboring regimes. Odorants can smell differently, so it is vital to use a familiar scent so that people will not be confused by another odor. For this reason, the natural gas smell is at times described differently, like:
- natural gas smells like rotten eggs
- natural gas smells like kerosene
- natural gas smells like lighter fluid
- natural gas smells like skunk
We also suggest that you consult your odorant manufacturer when selecting the odorant for a system or consider changing the odorant.
Natural Gas Odorants
While some compounds are used by themselves (such as tetrahydrothiophene), most odorants today consist of a mixture of various compounds, such as:
- Dimethyl Sulfide
- Isopropyl Mercaptan
- Methyl Ethyl Sulfide
- Normal Propyl Mercaptan
- Secondary Butyl Mercaptan
- Tertiary Butyl Mercaptan
Odorant manufacturers create custom blends of the noted compounds so that they are more suitable for specific applications. When selecting an odorant or odorant mixture, it is crucial to understand the odorant’s vapor pressure, odor, soil penetrability, and oxidation resistance.
Another essential aspect when dealing with the odorant is to take great care to eliminate or minimize the fugitive odorant emissions during the filling process. Odorant manufacturers can deliver the chemical via truck or transportable containers for smaller applications.
Natural Gas Mercaptan
At GPL Odorizers, we request that our clients buy their selection of odorant from their preferred odorant supplier.