Catalytic thermal cracking catalyst and preparation method thereof
A catalytic thermal cracking and catalytic cracking technology, which is applied in the field of catalytic thermal cracking catalyst and its preparation, can solve the problem of insufficient ethylene yield, achieve good thermal and hydrothermal stability, improve sphericity, and high crystallinity.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0024] In the preparation method of the catalyst provided by the present invention, the preparation of the aluminum binder slurry described in step (2) is prepared according to the preparation method of the aluminum binder slurry in the existing cracking catalyst preparation process, including mixing the aluminum binder with water The steps of mixing, beating, and adding acid for acidification, the preferred amount of acid is one or more of the commonly used acids in cracking catalyst preparation such as hydrochloric acid, nitric acid and phosphoric acid so that the pH value of the slurry is 2-4. The aluminum binder is selected from pseudoboehmite, hydrated alumina with a gibbsite structure, hydrated alumina with a gibbsite structure, hydrated alumina with a Bayerite structure, γ-alumina, η- One or more of alumina, θ-alumina, χ-alumina, and aluminum sol. Based on the weight of the catalyst, the amount of alumina introduced into the aluminum binder slurry is 5-75% by weight, pr...
Embodiment 1
[0033] (1) 4Kg of ZrOCl 2 (wherein zirconia 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) is mixed with decationized water to make an aqueous solution with a concentration of 1.0mol / L, and ammonia (Beijing Chemical Plant, 25% by weight) is added to the pH value under stirring. 9, then aged at 25°C for 26 hours with stirring, and filtered to obtain ZrO(OH) 2 Gel, washed with deionized water until no Cl was detected in the washing solution after washing - , drying at 120°C for 24 hours, and calcining at 550°C for 2 hours to obtain zirconia powder;
[0034] (2) 20Kg decationized water is mixed with 10Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63m%), beating, and its pH value is 3 with hydrochloric acid adjustment;
[0035] (3) Add 19Kg halloysite (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) into the slurry obtained in step (2), beating for 5 minutes, then add 0.61Kg of zirconia powde...
Embodiment 2
[0039] (1) 20Kg decationized water is mixed with 10Kg pseudo-boehmite (industrial product of Shandong Aluminum Factory, solid content 63m%), beating, and its pH value is 2.5 with hydrochloric acid adjustment;
[0040] (2) 14Kg ZrOCl 2 (36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) mixes with decationized water to obtain an aqueous solution with a concentration of 1.5mol / L, and then adds ammoniacal liquor (Beijing Chemical Plant, 25% by weight) to it under stirring. The pH value is 9, aged for 16 hours under stirring at 30°C, and filtered to obtain ZrO(OH) 2 Gel, washed with deionized water until Cl-free in the washed water - Detected, dried at 115°C for 26 hours, and calcined at 600°C for 5 hours to obtain zirconia powder;
[0041] (3) 18Kg halloysite (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) is added in the slurry obtained in step (1) and mixed, beating for 5 minutes, then adding 3.21Kg of zirconia powder prepared i...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More