Preparation method for hydrocracking catalyst
A hydrocracking and catalyst technology, which is applied in the field of hydrocracking, can solve the problems of poor catalyst activity, poor product properties, and accelerated catalysts, and achieve the effect of good activity and high nitrogen resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0035] The preparation method of hydrocracking catalyst of the present invention specifically comprises the following contents:
[0036] (1) Mix the modified Y molecular sieve, amorphous silica-alumina and / or alumina uniformly according to a certain ratio, add dilute nitric acid to form a slurry, extrude, dry and roast to obtain a silica-alumina carrier containing modified Y molecular sieve; The concentration of the dilute nitric acid is 3wt%~30wt%; the drying condition is: drying at 80~120°C for 1~5 hours; the roasting condition is: roasting at 400~700°C for 1~5 hours;
[0037] (2) The carrier in step (1) is impregnated with an impregnation solution containing active metals, and the impregnated carrier is dried and roasted to obtain a hydrocracking catalyst; the impregnated liquid-solid mass ratio is 1.5:1~3:1 , carried out by means of saturated impregnation well known in the art, the content of VIB group metal compounds in the impregnation solution is 20~60g / 100ml according ...
Embodiment 1
[0041] Molecular sieve modification process:
[0042] (1) Take 200g of NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.5mol / L according to the liquid-solid ratio of 3:1, exchange at 60°C for 2 hours, repeat this process twice, and the exchanged Y molecular sieve Na content in Na 2 O is calculated as 3.5%;
[0043] (2) The molecular sieve obtained in step (1) was mixed with distilled water according to the liquid-solid ratio of 5:1, then, 180ml of ammonium fluorosilicate solution with a concentration of 0.8mol / L was added, and treated at 60°C for 1.0 hour;
[0044] (3) Hydrothermally treat the Y molecular sieve obtained in step (2) at 560°C and 0.2MPa for 2 hours;
[0045] (4) The molecular sieve obtained in step (3) was stirred and mixed with distilled water according to the liquid-solid ratio of 5:1, and then the temperature was raised to 80°C. During the stirring process, 400ml of 0.6mol / L aluminum sulfate s...
Embodiment 2
[0057] Molecular sieve modification process:
[0058] (1) Take 200g of NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 0.6mol / L according to the liquid-solid ratio of 3:1, exchange at 70°C for 3 hours, repeat this process twice, and the Y molecular sieve after exchange The Na content is 3.0% as Na2O.
[0059] (2) The molecular sieve obtained in step (1) was mixed with distilled water according to the liquid-solid ratio of 6:1, then, 150ml of ammonium fluorosilicate solution with a concentration of 0.6mol / L was added, and treated at 70°C for 1.0 hour;
[0060] (3) Hydrothermally treat the Y molecular sieve obtained in step (2) at 540°C and 0.15Mpa for 2 hours;
[0061] (4) The molecular sieve obtained in step (3) was stirred and mixed with distilled water according to the liquid-solid ratio of 6:1, and then the temperature was raised to 80°C. During the stirring process, 400ml of 0.8mol / L aluminum sulfate solution...
PUM
Property | Measurement | Unit |
---|---|---|
specific surface area | aaaaa | aaaaa |
specific surface area | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com