Those whose tannin desulfurization process is working well, please show it – I want to learn!*
Thread Content
Since the conversion and desulfurization process in our factory has not been functioning properly, we have discussed this issue with the forum moderators and other users before, but the problem still remains unresolved. Therefore, we would like to ask those users who are having good results with their processes to share their experiences. The aspects to cover include: 1) the components of the conversion and desulfurization liquid; 2) the process parameters; 3) the conditions under which the liquid is prepared; 4) the manufacturer of the catalysts used and how they are utilized (it’s not necessary to reveal this information); 5) the operating procedures; 6) the efficiency of sulfur removal, etc. Let’s start by discussing our situation here. As for the components of the conversion and desulfurization liquid: sodium carbonate at 1.59%, tannin at 1.0%, vanadium at 0.55%, sodium bicarbonate at 45%, sodium thiosulfate at 32%, sodium sulfate at 38%. The pH level of the alkaline solution is 50, while the suspended sulfur content is 0.13%. Regarding the process parameters: the spraying density is 50, the regeneration pressure is 0.70, the regeneration temperature is 39–40 degrees Celsius. The sulfur content after processing is 0.0052, while it was 0.220 before processing. The liquid level in the conversion and desulfurization tower ranges from 70% to 90%. For the preparation of the liquid, tannin, vanadium, and soft water are used. The air is heated to 90°C using steam and held at that temperature for 4 hours; after cooling, it is added to the system. Catalyst usage: To be honest, it’s hard to say. . . . . . Currently, the sulfur level is zero; there is no overflow from the foam layer, and the liquid that flows out is clear – sulfur cannot be melted out. Experts and seniors, please analyze it!
What pressure level do your variable decouplers have? The issue the original poster is talking about might well be the one you find difficult to express.
Based on the poster’s situation, I’ll add a few more points for enthusiastic discussion among all of you: 1. Components used in the liquid separation process; 2. Parameters related to the liquid separation process; 3. Conditions under which the liquid is produced; 4. Manufacturers of catalysts and their usage (it’s not necessary to specify them); 5. Operating procedures; 6. Desulfurization efficiency; 7. Operating pressure; 8. Regeneration pressure; 9. Regeneration temperature; 10. Sulfur recovery rate; 11. Whether clear liquid is recovered; 11. The sulfur recovery process used.
I would like to ask the original poster: How long has this situation been going on for you, and when was the vehicle first purchased?
Regeneration is not very good; is the regeneration pressure appropriate? Is it too high?
OP, could you tell us about the desulfurization process in your factory and what measures were taken to get things back to normal?
The poster is referring to a variable disengagement system with a pressure of 2.0 MPa, right? It seems that the systems that can achieve disengagement at this pressure level are not very good
This post was last edited by dpn103 on 2012-9-28 03:11. It seems that the amount of air drawn in by the nozzle is insufficient; generally, the pressure at the nozzle should be around 4-5 kilograms, and the regeneration temperature should be maintained between 42-45 degrees. Additionally, a release tank should be installed before entering the regeneration tank to reduce pressure and remove carbon dioxide. The tannin needs to be aged in air for 24 hours – is the gas too dirty?
The tannin solution needs to be aerated and allowed to mature for 24 hours; moreover, the gas contains too many impurities and oil.
Given the high levels of thiosulfate and sulfate and the absence of sulfur formation, it seems that the catalyst did not function.
I’m stunned! My zombie post has already been posted, and it seems like everyone is very interested in itaaaaa. But things are back to normal now, and consumption has also decreased.