Anhui Power Plant Denitration Catalyst Regeneration Operation Instructions
Publishdate：2023-02-01 Views：51
Anhui Power Plant Denitration Catalyst: After long-term operation, the surface of the denitration catalyst will form solid waste soot mainly containing heavy ions. Its main components are silicates, aluminosilicates, silica, sulfates, and sulfides with high iron content, such as calcium oxide. Especially when coal with high sulfur content is used as fuel, the compound's smoke scale is more severe. Among many ions, toxic ions such as arsenic ions, potassium ions, sodium ions, ammonium salts, and fly ash will form a gas state, diffuse to the pores of the catalyst, and adsorb on the active surface of the catalyst, reacting with the catalyst, Has a long-lasting toxic effect on the catalyst, hindering its effective denitrification reaction.
Denitration catalyst for Anhui power plant: after long-term operation, the surface of denitration catalyst will form solid waste soot with heavy ions as the main body. Its main components are silicate, aluminosilicate, silica, sulfate. Sulfides with high iron content, such as calcium oxide, especially coal with high sulfur content as fuel, have more serious soot. Among many ions, toxic ions such as arsenic ion, potassium ion, sodium ion, ammonium salt and fly ash will form a gaseous state, diffuse into the pores of the catalyst, and adsorb on the active surface of the catalyst to react with the catalyst, It has a lasting toxic effect on the catalyst and hinders the effective denitration reaction of the catalyst.
Chemical cleaning is the method of catalyst regeneration failure, that is, to improve the use efficiency and save the replacement cost.
Acid washing and alkali washing will cause certain damage to the catalyst and reduce the effective activity of some catalysts. Strong sulfuric acid and strong base have the ability to decompose titanium dioxide and also have a reaction on vanadium compounds.
The chemical compound organic scale dissolving agent can solve these problems well, that is, cleaning the catalyst surface without damaging the catalyst, adding the catalyst protection nutrient solution can better improve the activity of the catalyst surface.
Operation suggestions
Use compressed air to blow out the floating ash first, then use compressed air to blow out the floating ash, hl-638 complex scale dissolving agent and HL dispersant 639, and wash the scale for 3-12 hours (or 24 hours as appropriate), so as to basically remove the dirt on the catalyst surface.
2. use hl-635 penetrant, hl-636 surfactant and hl-639 dispersant for deep stripping for 2-8 hours. (the dirt in the pores on the catalyst surface can be stripped off and the activity can be completely restored).
Filter with clean water for 1-2 hours.
4. finally, soak hl- in 630 compound dimethyl water-soluble protective solution, and take it out and dry.
If time is tight, article 1.2 can also be used at the same time.
(hl-660 is mainly used for long-term use and cleaning. The surface activity of useful ions such as titanium and vanadium will reduce the bottom. The use of protective fluid can limit the activity and quality of the product, and slow down the generation of soot. Hl-630 composite dimethyl water-soluble protective fluid is a kind of active ion bonding fluid composed of metal titanium, vanadium, tungsten and molybdenum.)
Anhui Power Plant Denitration Catalyst: After long-term operation, the surface of the denitration catalyst will form solid waste soot mainly containing heavy ions. Its main components are silicates, aluminosilicates, silica, sulfates, and sulfides with high iron content, such as calcium oxide. Especially when coal with high sulfur content is used as fuel, the compound's smoke scale is more severe. Among many ions, toxic ions such as arsenic ions, potassium ions, sodium ions, ammonium salts, and fly ash will form a gas state, diffuse to the pores of the catalyst, and adsorb on the active surface of the catalyst, reacting with the catalyst, Has a long-lasting toxic effect on the catalyst, hindering its effective denitrification reaction.
Denitration catalyst for Anhui power plant: after long-term operation, the surface of denitration catalyst will form solid waste soot with heavy ions as the main body. Its main components are silicate, aluminosilicate, silica, sulfate. Sulfides with high iron content, such as calcium oxide, especially coal with high sulfur content as fuel, have more serious soot. Among many ions, toxic ions such as arsenic ion, potassium ion, sodium ion, ammonium salt and fly ash will form a gaseous state, diffuse into the pores of the catalyst, and adsorb on the active surface of the catalyst to react with the catalyst, It has a lasting toxic effect on the catalyst and hinders the effective denitration reaction of the catalyst.
Chemical cleaning is the method of catalyst regeneration failure, that is, to improve the use efficiency and save the replacement cost.
Acid washing and alkali washing will cause certain damage to the catalyst and reduce the effective activity of some catalysts. Strong sulfuric acid and strong base have the ability to decompose titanium dioxide and also have a reaction on vanadium compounds.
The chemical compound organic scale dissolving agent can solve these problems well, that is, cleaning the catalyst surface without damaging the catalyst, adding the catalyst protection nutrient solution can better improve the activity of the catalyst surface.
Operation suggestions
Use compressed air to blow out the floating ash first, then use compressed air to blow out the floating ash, hl-638 complex scale dissolving agent and HL dispersant 639, and wash the scale for 3-12 hours (or 24 hours as appropriate), so as to basically remove the dirt on the catalyst surface.
2. use hl-635 penetrant, hl-636 surfactant and hl-639 dispersant for deep stripping for 2-8 hours. (the dirt in the pores on the catalyst surface can be stripped off and the activity can be completely restored).
Filter with clean water for 1-2 hours.
4. finally, soak hl- in 630 compound dimethyl water-soluble protective solution, and take it out and dry.
If time is tight, article 1.2 can also be used at the same time.
(hl-660 is mainly used for long-term use and cleaning. The surface activity of useful ions such as titanium and vanadium will reduce the bottom. The use of protective fluid can limit the activity and quality of the product, and slow down the generation of soot. Hl-630 composite dimethyl water-soluble protective fluid is a kind of active ion bonding fluid composed of metal titanium, vanadium, tungsten and molybdenum.)
