Suggestions for Selecting Odorants
① Regardless of which type of odorant gas companies choose as a warning additive for gas leaks, the concentration of odorants in the pipeline should be detected and analyzed, and if conditions permit, chromatographic analyzers should be used for odorant concentration detection.
② When using tetrahydrothiophene as an odorant, the adsorption loss of the odorant in the pipeline should be fully considered. When the amount of odorant added at the end of the pipeline does not meet the requirements, the initial addition amount should be appropriately increased.
③ Gas companies with conditions can consider using sulfur free odorants. The new odorant, which does not contain sulfur, can reduce the sulfides produced during natural gas combustion and effectively reduce SO2 emissions. It has a good demonstration effect in environmental protection.
④ Due to the lower adsorption of sulfur free odorants in pipelines compared to tetrahydrothiophene, the loss at the end of the pipeline is smaller, which can achieve central odorization of the pipeline, reduce the deployment of odorants, and lower the safety management risks of odorants.
⑤ When selecting tetrahydrothiophene as an odorant, attention should be paid to setting the odorant point as close as possible to the pressure regulator, meter, and gas storage tank to prevent the maximum concentration of odorant from corroding these devices. At the same time, the odor point should be at a certain distance from the PE pipe and aluminum-plastic composite pipe, as tetrahydrothiophene has a certain degree of corrosion on these pipes. When the setting distance of the odorant point does not meet the requirements, sulfur free odorants can be considered for use.Info Box
