How to deal with high sulfur content in hydrogenated naphtha?
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How to deal with high sulfur content in hydrogenated naphtha?
Increase the amount of stripping steam in the stripper appropriately, and check whether the sulfur content in the feed has increased. Is the purity of the recycled hydrogen low? The excess hydrogen can be properly discharged. Contact the scheduler to see if there are any changes to the product.
Check for internal leaks in the heat exchanger, increase the hydrogenation depth, and reduce the pressure in the stripping tower
Naphtha generally has a higher temperature than refined diesel. Hydrogen sulfide stripping, including reboiling at the bottom of the distillation column, can remove hydrogen sulfide from the oil to the top; it is possible to monitor the degree of reaction as well as the amount of stripping steam used
Naphtha generally has a higher temperature than refined diesel. Hydrogen sulfide stripping, including reboiling at the bottom of the distillation column, can remove hydrogen sulfide from the oil to the top; it is possible to monitor the degree of reaction as well as the amount of stripping steam used
Naphtha generally has a higher temperature than refined diesel. Hydrogen sulfide stripping, including reboiling at the bottom of the distillation column, can remove hydrogen sulfide from the oil to the top; it is possible to monitor the degree of reaction as well as the amount of stripping steam used
It is necessary to check whether it is organic sulfur or inorganic sulfur; if it is organic sulfur, the hydrogenation depth is insufficient, and if it is inorganic sulfur, the stripping tower needs to be adjusted
What kind of sulfur? What was said upstairs is quite comprehensive; I’ll add that I want to check whether the stabilization system is being operated correctly
The hydrogen sulfide concentration in the system is high, and the hydrogen sulfide dissolved at low concentrations has not been completely removed in the stripping tower.
Reduce the pressure in the stripping tower to see how the sulfur content of the feed changes, conduct a sulfur speciation analysis; if that doesn’t work, an external desulfurization reactor can be used.
It is necessary to analyze what causes the excessive sulfur content: 1. This can be due to insufficient reaction depth; in such cases, increasing the reaction depth, raising the temperature and pressure, reducing the feed rate, or even replacing the catalyst are all possible solutions； 2. If the reaction depth is sufficient but there are problems in the subsequent separation process, then focus on those separation steps by increasing the stripping volume and adjusting operational parameters such as the temperature and pressure of the stripping tower