Desulfurization and denitration
Thread Content
I work in the reaction section. The plants I’ve worked on before did not have desulfurization and denitration functions, but this one does. I would appreciate it if everyone here could explain to me the process flow for desulfurization and denitration as well as the names of the relevant equipment. I don’t need the specific parameters; since I’m not yet familiar with the process flow, I’ll skip those details for now
What is the format of your desulfurization and desulfurization process?
It’s too general; I guess you work in the boiler auxiliary equipment department, and desulfurization and denitrification are adjusted based on the sulfur and nitrogen content in the flue gas
It means denitration of the flue gas first, followed by desulfurization – what are the different methods for this? Give me an introduction
It’s not nitrogen-containing, right! It should be a nitride, right? Could you give some specific details on what kind of problems are commonly encountered in this job?
Denitration methods include SCR and ozone oxidation； For denitration, there are EDV and WGS
Desulfurization is the process of wet absorption followed by reoxidation to treat wastewater. Wet absorption generally involves dust removal; water treatment units deal with the recycling of waste catalysts, and it essentially comes down to filtration. Depending on the design, different types of filters are used. Denitration is generally used in SCR power plants; SNCR is also available. It’s not difficult either; the key lies in the choice of catalyst. It should be a non-renewable fixed-bed reactor, with soot blowers used to maintain the catalytic reaction activity. Whether it is anaerobic regeneration or aerobic regeneration, it is generally installed in the evaporation section of the boiler, before the economizer; depending on the conditions of the boiler, it may also be placed before or after the superheating section. The temperature should generally be maintained above 300 degrees, with the exact value determined by the catalyst used. I have worked on projects before; for the initial selection, a catalyst activity temperature of 200 was sufficient. After I graduated, it was my junior colleagues who carried out the experiments, and I didn’t do much involved in them. However, that boiler isn’t very large either, and the environmental standards required are fairly modest. Currently, the requirements for production unit metrics are quite high.
I have another question: how often does the catalyst used for denitration need to be replaced? Is it troublesome?
EDV and ozone oxidation are relatively simple; just have the patent holder provide training for you when the time comes
What exactly are desulfurization and denitration processes? The company’s coke ovens are under construction; I would like to know more about three things: first, the process equipment; second, the process flow; and third, the staffing