Technology is introduced: |
|
Rerponse characteristics: |
There are four basic characteristics of catalytic reactions, which can be derived by definition and are important for understanding the functions of catalysts.
1. A catalyst can only accelerate reactions that are thermodynamically possible. When developing a new chemical reaction catalyst, the first step is to perform a thermodynamic analysis of the reaction to see if it is a thermodynamically feasible reaction.
2. The catalyst can only accelerate the reaction towards equilibrium and cannot change the equilibrium position (equilibrium constant) of the reaction.
3. The catalyst is selective to the reaction. When the reaction may have more than one direction, the catalyst accelerates only one of them, which promotes the reaction rate and selectivity.
4. Catalyst life. A catalyst can change the rate of a chemical reaction, it does not enter the reaction itself, and in an ideal world the catalyst is not changed by the reaction. But in the actual reaction process, some irreversible physical and chemical changes will also occur when the catalyst is heated and chemically treated for a long time.
According to the definition and characteristic analysis of catalyst, there are three important catalyst indexes: activity, selectivity and stability.
|
A necessary condition for: |
Necessary guarantee conditions for catalyst efficiency and life:
1. Guarantee of pulp shedding rate < 2% per piece: the pulp shedding rate is less than 2% under the wind speed of 6kg pressure
2. Guarantee of advanced coating technology: automatic sizing, vacuum automatic mechanical coating
3. Guarantee of sufficient precious metal content: don't cut corners, and get profits by reducing precious metal content
4. International standards - Performance testing
- Performance testing
The current catalyst life cycle is 3 years or 24,000 hours
Before our company installs the machine, we need to pass the laboratory performance test, or equip the relevant third-party test report.
|
Distinction between good and bad catalysts: |
|
Recovery and treatment: |
- The service life of the catalyst is generally 24000h, and the deactivated catalyst should be replaced in time after the deadline.
- Landfill is widely used in the disposal of waste denitrification catalysts. However, the landfill of a large number of discarded SCR destocking catalysts will exert great environmental pressure on soil and water in China.
- Vanadium based catalyst is toxic catalyst, the catalyst must be recovered by the qualified unit and harmless treatment.
- The catalyst after harmless treatment enters the hazardous waste safety disposal center for landfill.
- Our company will provide catalyst replacement business and also provide catalyst recovery business.
|