Can the desulfurization targets be achieved this way?
Thread Content
Specifications for desulfurization catalyst: 1. Scale: Desulfurization project for coking gas with a capacity of 90,000 m3/h. 2. Equipment: A single-tower desulfurization and regeneration system is used; the diameter of the desulfurization tower is 8 meters, and it is equipped with three layers of lightweight ceramic packing. 3. Regeneration method: Jet self-priming regeneration. 4. Process flow: A three-tower series configuration for three-stage desulfurization. 5. Solution circulation rate: 2,400 m3/h per tower; solution volume held in each tower: 600 m3. 6. The H2S content before desulfurization is 10 g/Nm3. 7. The hydrogen sulfide content behind the tower is less than 100 Mg/Nm. Note: A wet desulfurization agent is required
1# wtchj You still need to provide pressure and temperature data to perform the calculation
The issue mentioned by the poster is related to the ammonia content; generally, the ammonia-to-sulfur ratio is greater than 1, and the gas temperature is around 30 degrees. Additionally, the investment required for such towers is high, although they require less space and compressed air. I suggest that the desulfurization tower and the regeneration tower be separate. If the ammonia content is sufficient, it is theoretically possible to achieve this by choosing a better catalyst.
The amount of catalyst required needs to be increased; based on my experience, it might be over 10 Kg per day. Moreover, the regeneration process may not be sufficient relying solely on the amount of air drawn in by self-priming, so compressed air needs to be supplied externally.
With such a large scale, it is essential to use high-quality injectors; otherwise, the regeneration effect cannot be guaranteed, and it will be difficult to achieve desulfurization
Does the poster need a catalyst or a tower-type process?
The desulfurization of coke oven gas should take place at normal temperature and pressure, right? What is the current operating status? What catalyst is used?
Whether the standards can be met is also related to the quality of production management; sometimes it is even the main factor
Such metrics and designs are unattainable; in a normal-pressure absorption process, over 600 self-priming nozzles are required for regeneration, while in a pressurized absorption process, more than 400 such nozzles are needed. Is it possible to build a regeneration tower of this kind? The circulation rate for a single tower is 2400 M3/h; with three towers connected in series, it is necessary to maintain an outlet pressure of over 10 kPa. The diameter of the absorption tower should be 10 meters (this refers to absorption under normal pressure)
In this way, the tower can be designed. I just completed a desulfurization project with a gas capacity of 100,000 cubic meters per hour; the sulfur content in the coke oven gas was quite high. The flow rate required for the injectors is 2,400 M3/H per regeneration tower, and injectors with a capacity of 30 are used – more than 40 such injectors are sufficient. A regeneration tower with a height of 10 meters is a bit too small.
What is the typical height of this single-tower desulfurization tower, and what size are the circulation pumps?