What are some of the better National IV gasoline desulfurization processes available in China currently?
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As the title suggests, I hope everyone can offer plenty of guidance~
s-Zorb and gasoline hydrodesulfurization technologies – these are the main methods used for desulfurization at present. There is also pre-desulfurization, which primarily involves residue hydrodesulfurization and hydrocracking processes; relatively speaking, the investment required for these methods is somewhat high. But the yield is better than that of catalysis
It should be the use of catalysis for desulfurizing gasoline in order to produce National V gasoline. The technology we have here is of French origin; it’s sufficient for producing National IV gasoline. However, when producing National V gasoline, the processing volume has to be reduced significantly, and the octane rating drops by almost 2 points. But facilities will need to be upgraded soon, and it seems that the technology used will be from Hebei Jingzi
What you’re describing sounds a bit too advanced for us. We are a local refinery; we carry out hydrogenation of gasoline, followed by alkaline washing and desulfurization in fixed-bed reactors to meet the National IV standards. Our processing techniques are somewhat outdated, and it’s also difficult to deal with the alkaline residues resulting from this process.
Oh, thank you for the advice! :handshake
From a long-term investment perspective, the mainstream hydrogenation desulfurization method used abroad is the best option; the method of refining desulfurized alcohols will gradually be phased out due to environmental concerns and the fact that it can only remove hydrogen sulfide and thiol compounds
In 2014, the PrimeG+ process from AXENS abroad was already used in over 100 small refineries in China – what are you still waiting for?
They are all now at National V standard; our company hasn’t produced vehicles meeting National IV standards for a long time now
This is exactly our current situation: the technical department in the factory is weak and unable to solve even the most basic problems. Whenever there are issues in production, it’s up to the production workshop to handle them on its own. They only come to check whether the process parameters are being followed – it’s frustrating!
We’re the type of people who only realize we need to act when it’s already too late. The technical department in the factory isn’t strong enough, and besides, it’s not something that can be decided by the technical department alone; introducing new equipment or technologies requires approval from the boss. Private enterprise owners don’t understand these things either – they only take action when new standards are issued and it becomes necessary to do so. ;P
Yes, that’s right; while implementing National Standard IV, the developed coastal areas have already adopted National Standard V. :handshake