89 Air Separation Equipment Palladium Catalyst Acceptance Technical Conditions
1. General
1.1 Palladium catalysts are usually used in air separation equipment of 89 industry, so the technical conditions for acceptance must be paid attention to. This paper discusses related technical conditions for the acceptance of palladium catalysts in 89 air separation equipment.
1.2 The main purpose of this paper is to define the technical conditions of acceptance for palladium catalysts used in air separation equipment, as well as to ensure the uniformity of quality and parameters.
2. Requirements for Palladium Catalyst
2.1 The catalyst must meet the performance requirements of the catalytic reaction.
2.2 The palladium content of the catalyst must meet the prescribed specifications.
2.3 The structural characteristics of the catalyst must meet the required specifications.
2.4 The surface properties of the catalyst, such as particle size, porosity, surface area, surface wettability and surface area ratio of the catalyst should meet the requirements.
2.5 The catalytic reaction process must be stable and reliable, and the efficiency of the catalyst must meet the requirements.
2.6 The catalyst must meet the mechanical requirements such as compressive strength, water vapor pressure and impact resistance.
3. Test Method for Palladium Catalyst
3.1 Palladium catalysts should be tested for their performance, structure and surface properties.
3.2 Performance test: the performance of the catalyst is usually tested by the dynamic method. This method uses a simulated reaction system to simulate the reaction of the palladium catalyst used in air separation equipment, and evaluates the catalytic activity, selectivity and operational stability of the catalyst from the reaction data obtained.
3.3 Structure test: The internal structure of the catalyst is usually used X-ray diffraction (XRD) method to test: XRD is used to detect the basic data of the catalyst structure such as crystallinity, crystallite size, lattice constant and crystallinity of the catalyst.
3.4 Surface property test: To determine the surface properties of the catalyst, the specific surface area, porosity and surface wettability of the catalyst are usually tested by BET method and water adsorption method.
4. Performance Requirements for Palladium Catalysts
4.1 The catalyst must meet the requirements of temperature, reaction pressure and selectivity.
4.2 The temperature of the catalyst should be in the prescribed range, usually no more than 500℃.
4.3 The reaction pressure of the catalyst should be in the required range, usually no more than 100 atmospheres.
4.4 The selectivity of the catalyst should meet the requirements of the desired conversion rate.
4.5 The stability of the catalytic reaction process should meet the requirements, usually remaining unchanged for at least 24 hours.
5. Quality Inspection
5.1 After completing the product testing, it is necessary to inspect the palladium catalyst.
5.2 The product should be stored properly to prevent the degradation of the impurity to ensure the quality of the catalyst.
5.3 For each batch of products, a sample needs to be taken out to test: first of all, the performance and structure of the sample should be tested, and then a microscopic image of the sample should be taken.
6. Acceptance Procedure
6.1 After all the tests are completed, the acceptance of the palladium catalyst should be conducted according to the established acceptance procedure.
6.2 A complete acceptance report must be prepared after the acceptance of the palladium catalyst.
6.3 The technical conditions for acceptance of the palladium catalyst should be established for each batch of products, and all the acceptance data should be reviewed before the product is put into use.
Conclusion
The acceptance of palladium catalysts used in air separation equipment requires strict technical conditions. The acceptance technical conditions should be established according to the characteristics of the equipment, and the product quality should be tested according to the established technical conditions. A complete acceptance report should be prepared after the acceptance of the product.
