Application introduction of special purification catalyst for waste incineration and digestion
Cas-kr-yl-f special catalyst for waste incineration and digestion produced by jiangxi zhongkekaili company is prepared by using cordierite honeycomb ceramics as the carrier, adopting unique high-temperature resistant rare earth coating materials and taking high content precious metals Pd and Pt as the active groups. It is mainly used in the field of waste incinerator and waste carbonization digestion furnace. It is installed in the exhaust gas treatment system of waste incineration digestion furnace and serves as the core component of catalytic combustion chamber. The special catalyst for waste incineration and digestion can greatly improve the emission control level of incinerator, and give play to the advantage of high activity and temperature resistance in the secondary flue gas recombustion treatment, so that the flue gas is fully treated. The emission of flue gas is much lower than the national emission standard, and the CO content in flue gas emission is 22mg/m3. Meanwhile, the waste heat of secondary catalytic combustion reaction can be reused.
Performance index of special catalyst for waste incineration and digestion
1. Ignition temperature: 260℃-280℃
2. CO conversion rate at 450℃ : > 99%
3. Maximum temperature resistance: 800℃
4. Service life: > years
5, 450℃ airspeed h-1: > 5000
6. Heap specific weight: 0.72±0.05g/mL
7. Crushing strength: ≥12MPa
8. Carrier specifications: according to customer requirements
9. Coating load: >8.0%
10. Shedding rate: , 0.1% or according to customer requirements
Appearance: honeycomb ceramic gray black
Working principle of special catalyst for waste incineration and digestion
CAS - KR - YL - F type waste incineration MSW (resolution) furnace digestion special catalyst as a core component, generally installed in garbage incinerator secondary combustion chamber or eliminate furnace exhaust catalytic reactor, the waste incineration furnace (resolution) is burned (resolution) equipment, energy saving and emission reduction waste waste incineration technology for garbage in a burning in the hearth, a burning (resolution) tail gas by the dust removal process is a medium temperature exhaust gas, such as medium temperature exhaust gas into the secondary catalytic combustion chamber, in the secondary combustion chamber with exothermic reaction catalyst in catalytic oxidation, medium temperature exhaust all into non-polluting carbon dioxide and water, To achieve the goal of eliminating CO and dioxins; After the catalytic oxidation combustion is complete, the waste heat of purification tail gas can be used for power generation and high temperature steam heating, and then discharged into the atmosphere through the chimney.
Notes for use of special catalyst for waste incineration and digestion
1) the installation of catalyst shall be sealed with steel frame. The installation of catalytic bed shall be divided into more than 2 sections, and the holes shall be aligned as far as possible. Section 1 temperature should be controlled below 800℃.
2) before use, the catalyst can be preheated to more than 400℃ with fresh air to enter waste gas for incineration (digestion), otherwise it will easily cause carbon deposition or fly temperature phenomenon.
3) at low temperature, a large amount of waste gas from waste incineration (digestion) enters the catalytic bed, causing the catalyst to "suffocate" and temporarily deactivate.
4) compounds containing sulfur, phosphorus, arsenic, halogen and other heavy metal compounds will react with the active ingredients, resulting in permanent deactivation of the catalyst; Flue gas should be used to pretreat various acidic gases and impurities.
5) dust, carbon deposit and high boiling viscosity adhere to the surface of the catalyst and cover the active point of the catalyst, resulting in the loss of catalysis; Flue gas filtration pretreatment should be used.
6) in the first stage of the catalytic bed, the long-term high temperature above 800℃ will agglomerate or sintering the catalyst support and active components, resulting in a substantial reduction in the number of active sites and eventual deactivation; The first stage of catalytic bed should be heat transfer in time.
Label: waste incineration tail gas purification catalyst waste gas purification catalyst for low temperature cracking CO catalyst noble metal catalyst