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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 7. Отображено 7.
28-04-2023 дата публикации

Catalytic ozonation catalyst carrier, catalyst and preparation method and application of catalytic ozonation catalyst carrier

Номер: CN116020443A
Принадлежит:

The invention relates to the field of waste recovery treatment, and discloses a catalytic ozonation catalyst carrier, a catalyst and a preparation method and application thereof. The catalytic ozonation catalyst carrier has a core-shell structure, the core of the catalytic ozonation catalyst carrier is formed by a core composition, the shell of the catalytic ozonation catalyst carrier comprises alumina, and the core composition contains a waste FCC catalyst, an active metal oxide and a binder. The catalytic ozonation catalyst carrier can realize resource utilization of the waste FCC catalyst, and the obtained composite core-shell catalytic ozonation catalyst is high in catalytic activity and has an excellent catalytic oxidation effect on organic wastewater.

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14-04-2023 дата публикации

Evaluation method of pseudo-boehmite for preparing FCC (fluid catalytic cracking) catalyst

Номер: CN115963034A
Принадлежит:

The invention relates to the technical field of analysis and detection of pseudo-boehmite, and discloses an evaluation method of pseudo-boehmite for FCC (fluid catalytic cracking) catalyst preparation, which comprises the following steps: 1) carrying out first roasting on a pseudo-boehmite sample with the weight of M1, and measuring the weight M2 of the residual sample; (2) carrying out first mixing on a pseudo-boehmite sample with the weight of M3 and water to obtain an aluminum oxide suspension, and then carrying out second mixing on the aluminum oxide suspension and acid to obtain a colloidal solution; (3) carrying out solid-liquid separation on the glue solution obtained in the step (2), sequentially carrying out drying and secondary roasting on a solid phase obtained by the solid-liquid separation, and measuring the residual weight M4 of the solid phase; and 4) evaluating the performance of the pseudo-boehmite sample according to a calculation result of a formula Q% = M4/(M3 * M2/M1 ...

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20-06-2023 дата публикации

Recovery method and application of aluminum-based petroleum refining waste catalyst

Номер: CN116265591A
Принадлежит:

The invention relates to the field of resource recycling, and discloses a recycling method and application of an aluminum-based petroleum refining waste catalyst. The recovery method comprises the following steps: 1) mixing the aluminum-based petroleum refining waste catalyst with alkali metal salt and a carbon source, and then carrying out a carbon thermal reduction reaction in an inert atmosphere; 2) mixing the carbon thermal reduction product with water or an alkaline aqueous solution, and then carrying out solid-liquid separation to obtain a liquid phase containing aluminum and sulfur elements and a solid phase containing heavy metals and rare metals; 3) mixing the solid phase containing the heavy metals and the rare metals with acid, and then carrying out solid-liquid separation to obtain a liquid phase containing the heavy metals and a solid phase containing the rare metals; wherein the method does not comprise the step of roasting the aluminum-based petroleum refining waste catalyst ...

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28-04-2023 дата публикации

Ozone oxidation catalyst as well as preparation method and application thereof

Номер: CN116020463A
Принадлежит:

The invention relates to the field of resource utilization of industrial waste catalysts, and discloses an ozone oxidation catalyst as well as a preparation method and application thereof. The preparation method of the ozone oxidation catalyst comprises the following steps: 1) mixing a binder, an auxiliary agent, a flexibilizer and waste FCC catalyst powder; 2) contacting an active metal salt aqueous solution with the mixed material obtained in the step 1); and (3) carrying out extrusion molding on the wet material obtained in the step (2). The preparation method of the ozone oxidation catalyst is a one-step method for preparing the ozone oxidation catalyst containing active components, the preparation process flow is simple, the price is low, industrial application is easy, and the prepared ozone catalyst is good in mechanical strength, high in catalytic activity and stable in catalytic performance.

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28-04-2023 дата публикации

Regeneration method of FCC waste catalyst

Номер: CN116020551A
Принадлежит:

The invention relates to the technical field of catalyst regeneration, and discloses a regeneration method of an FCC waste catalyst. The method comprises the following steps: (1) mixing the FCC waste catalyst with a hydrogen peroxide solution, and carrying out heat treatment on the obtained mixture to obtain clinker; (2) carrying out acid leaching on the clinker obtained in the step (1) by using an acid solution, and carrying out solid-liquid separation to obtain a regenerated FCC catalyst; wherein in the step (1), the liquid-solid ratio of the hydrogen peroxide solution to the FCC waste catalyst is (0.6-1.1): 1mL/g, and the concentration of the hydrogen peroxide solution is 1-10wt%. The regeneration method has the advantages that the treatment process is simple, the operation time is short, the removal rate of harmful metals is high, and the obtained silicon-aluminum salt molecular sieve in the leaching residues is complete in structure.

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25-04-2023 дата публикации

Preparation method and application of catalyst for removing NOx in situ

Номер: CN115999578A
Принадлежит:

The invention relates to the field of catalyst preparation, and discloses a preparation method and application of a catalyst for in-situ removal of NOx. The method comprises the step of roasting a catalyst carrier impregnated with metal nitrate in the presence of a reducing substance, and the metal nitrate contains one or more of nitrates of chromium, manganese, iron, cobalt, nickel, copper, cerium, rhodium, palladium, silver and platinum. The method is economical and efficient, and NOx can be removed in situ in the catalyst roasting process, so that the difficulty of the subsequent tail gas denitration process is reduced, and the scale and operation cost of a subsequent treatment device are reduced.

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28-04-2023 дата публикации

Catalytic ozonation catalyst, preparation method thereof and wastewater treatment method

Номер: CN116020462A
Принадлежит:

The invention relates to the field of wastewater treatment, and discloses a catalytic ozonation catalyst, a preparation method thereof and a wastewater treatment method adopting the catalytic ozonation catalyst. The catalyst comprises a carrier and an active component loaded on the carrier, the carrier is one or more of alumina pellets, molecular sieve pellets, silicon-aluminum pellets and activated carbon pellets, and the active component contains iron oxyhydroxide. The ozone catalytic oxidation catalyst provided by the invention has excellent catalytic performance in organic wastewater treatment.

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