Trial of Sulfur Free Odorant

      Gas odorization, as one of the proactive safety measures taken by gas companies, has always been a concern. At present, the commonly used odorants in China are tetrahydrothiophene (THT) and thiol mixture (TBM), both of which contain sulfur (S) elements. When burned, they produce SO2 gas, which affects the quality of gas combustion and also affects the product quality of some industrial users, while polluting the environment. With the increasing demand for clean energy and the strengthening of control over the sulfur content in natural gas, the use of sulfur free odorants has become a future development trend.

      Sulfur free odorants have the same function as conventional odorants, serving as a warning substance with strong mixing ability with natural gas. They exist in a gaseous state in gas pipelines, are non corrosive, and do not pose any harm to human health or the environment during combustion. In addition to providing sulfur free natural gas to its customers, the user can also reduce operating costs and bring corresponding economic benefits.

       As an industrialized country that attaches great importance to environmental protection, Germany first proposed the use of sulfur free odorants in 1993 by the gas supply company Ruhr Gas and began research and development. In 1998, Germany obtained permission and participation from the German Gas Water Technology Association, conducted a series of on-site tests under different conditions, and obtained permission from gas supply enterprises.