Catalytic gasoline desulfurization technology
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The most widely used technology for gasoline desulfurization at present is hydrogenation. However, hydrogenation has many drawbacks, such as the easy saturation of olefins, high hydrogen consumption, high investment costs, and a decrease in gasoline octane rating. In the future, as environmental regulations become stricter and more stringent requirements are placed on the sulfur content in gasoline, adopting non-hydrogenation techniques to remove sulfur from gasoline could be a good approach while still striving for economic efficiency. So, what are the non-hydrogenation desulfurization techniques currently in use in industry?
Same question: are there any mature technologies that are already in industrial use?
The mature and reliable options left are probably Sinopec’s sulfur adsorption technology, or the catalytic devices used in the past to reduce olefins and sulfur content. However, with the introduction of the National VI standards, reducing olefins has become the main challenge. Many research institutions are currently studying whether catalytic methods or hydrogenation methods are more cost-effective for reducing olefins. Moreover, the cost associated with loss of octane value due to hydrogenation is lower than the cost increase resulting from gasoline upgrading; in other words, the only drawback of hydrogenation is its high investment requirements.