Components of desulfurization solution

There are many types of desulfurization solutions; I’m not sure which one you’re referring to. If it’s a thermally stable salt in an amine solution, your value might be incorrect – it can’t be that high. Treatment methods include distillation, ion exchange, etc. Thermally stable salts accelerate the corrosion of equipment and pipelines.

Hurry up and arrange it; otherwise your desulfurization solution will change color! Scientific approach: Recycle! For details, please refer to the Gas Design Manual

The high level of by-products is mainly due to the increased environmental regulations in recent times. In the past, when regulations were less strict, the sulfur melting liquid was not recycled, and there were no leaks each year; as a result, the problem of by-products did not arise. Now, everything has to be retained; the amount of evaporation is limited, and the inflow hasn’t decreased. It’s already a good situation that the volume of solution in the system isn’t increasing. Calculate the daily amount of alkali that needs to be added, and determine how much solution needs to be replaced over the course of a year. But your original solution volume doesn’t increase – it’s strange if no by-products accumulate As for processing: 1. It is possible to appropriately treat the solution (by regularly cooling a small amount of the solution on a daily basis to remove salts). Over time, it will have an effect. 2. Improve the regeneration process by properly controlling air, time, and temperature; strive to increase the sodium carbonate content in the lean solution, maintain stable solution alkalinity, reduce the amount of sodium salts added to the system, and stabilize the by-products. 3. Minimize the amount of water in contact with the system; when the liquid level is low, add fresh water instead of contaminated water, as this is beneficial for maintaining system stability. It can also reduce the formation of by-products. 4. Improve the sulfur melting process by trying to avoid heating large amounts of solution in the sulfur melting vessel. It is advisable to filter the solution first before melting it; this method helps to remove by-products and reduces solution loss, which is beneficial both for energy consumption in the sulfur melting process and for product quality. It is worth considering! !

What kind of process are you talking about? I feel like I don’t understand anything. Hehe, could you explain the process so I can learn it? Thank you

Since he mentioned the issue of by-products, it is not the Claus recovery system that you are familiar with; rather, it is wet-alkali desulfurization, which is used in nitrogen fertilizer plants with limited capacity. The main principle is: alkaline solution (sodium carbonate solution) is used to bind hydrogen sulfide in gas, and through the action of a catalyst, oxygen from the air replaces the sulfur in the solution, allowing it to be restored and reused. The process is as follows: 1. Liquid flow: Desulfurization pump – top of the desulfurization tower (packed tower) – regeneration tank (sulfur precipitation and separation) – lean liquid tank (solution recovery) – desulfurization pump. 2. Gas flow: Raw gas (under pressure) – separator (water removal) – bottom of the desulfurization tower – separator (water removal) – subsequent processing stages

I believe that, based on the selection of more mature desulfurization agents, the main factor affecting the stability of the desulfurization system is the continuous increase in side reactions and their resulting by-products. No matter how carefully such reactions are controlled, they are still inevitable; what is considered stability is only short-term stability. The true solution lies in completely eliminating the amount of by-products generated as a result of these unavoidable side reactions! The desulfurization solution can be subjected to crude salt (mixed salt) extraction, and the desalted desulfurization solution can be reused. This not only addresses the issue of increased by-products, keeping the content of by-products in the desulfurization solution stable, but also generates economic benefits. Low investment, small land footprint, easy operation – it completely solves the problems of environmental protection and low desulfurization efficiency. Other methods are neither thorough nor free of negative effects; they only provide temporary solutions rather than addressing the root cause. Speak up if there’s anything! My email address is: zhp1389@126.com