Odorant for gas and process for production of town gas with the odorant

Abstract

The invention relates to an odorant for imparting a warning smell of a gas leak to gas and a process for production of town gas with the odorant. The odorant is a mixture of n-butyl isocyanide with 2-hexyne and / or 1-pentyne; a mixture of ethyl isocyanide with 2-hexyne and / or 1-pentyne; a mixture of n-butyl isocyanide, ethyl isocyanide, 2-hexyne and 1-pentyne; 2-hexyne, 1-pentyne, or 1-butyne, or amixture of two or more of them; or a mixture of 2-hexyne and / or 1-pentyne with 3-methylbutanal and / or t-butylmercaptan. Since the odorant is completely free from sulfur, fuel gas containing the odorant does not generate sulfur oxides even in combustion to contribute to environment pollution control. Further, such fuel gas can be favorably used in fuel cells.

Description

technical field [0001] The present invention relates to a gas odorant that imparts a warning odor necessary for gas leakage detection to gas, and a method for producing city gas using the gas odorant. Background technique [0002] In recent years, fuel gas has become an indispensable substance in daily life, and its use has gradually expanded to various fields. However, as the fuel gas, there are, for example, hydrocarbon gases such as propane and butane (liquefied petroleum gas), motor gas (fuel for taxis), LNG (liquefied natural gas), city gas, industrial gas (acetylene, etc. ), gas for fuel cells (fuel for fuel cells), hydrogen, and DME (dimethyl ether), etc., but these fuel gases are flammable and explosive, but have very little odor, so sometimes even if they leak directly, they cannot It is recognized that sufficient countermeasures are required to prevent disasters such as fires and explosions caused by leakage in advance. [0003] Therefore, at present, as the easi...

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Problems solved by technology

This creates a problem that if the concentration of the odorant in the gas container increases, the gas leaks to the outside and becomes an unusually strong odor

[0009] Moreover, not only fuel gas, but also in the case of other gases such as oxygen, nitrogen, argon, and toxic gases whose odor is hardly perceived even if leaked, if it leaks, it is impossible to find the situation, waste gas or give There is a danger to life, so there is a need to impart an odor, and we have been researching odorants that can accurately impart an odor even in a very small amount.

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