A method for recovering and reusing waste hydrocracking catalyst
A hydrocracking and catalyst technology, applied in the direction of catalyst regeneration/reactivation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of high pollution, low recycling rate, etc., and achieve simple process, environmental protection and recycling Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] Take the FC-12 flexible hydrocracking catalyst (regenerated twice, with a total service life of 9 years) that has completed its service life in industry, grind it into powder, and sieve it with a 200-mesh standard sieve. Then, the catalyst powder was placed in a muffle furnace, and a nitrogen-oxygen mixture with an oxygen content of 2.0% was introduced into the muffle furnace, and calcined at 460 °C for 6 h. Put 200g of calcined powder into an alkaline buffer solution of sodium carbonate and sodium hydroxide with a pH value of 12 for beating, the solid-to-liquid ratio is 1:4, the beating temperature is 75°C, and the time is 60min. The cake was neutralized and dried at 120 °C for 6 hours; 400 g of the above dry powder was placed in a roller compactor, 4 g / 100 mL of dilute nitric acid solution, and saffron powder were added and rolled into a paste, and extruded into a diameter of 1.5 mm cylindrical. Then, it was dried at 120° C. for 4 hours, and calcined at 480° C. for 3...
Embodiment 2
[0024] Change the buffer solution of Example 1 to ammonium nitrate and ammonia water, adjust the pH value to 11.0, the solid-liquid ratio to 1:6, and add 15.0 g of modified Y-1 molecular sieve (unit cell constant 24.40, crystallinity 90%) during the rolling process. ), 28.0 g of tungstic acid and 20.0 g of nickel nitrate, other preparation methods are the same as those in Example 1, and the obtained catalyst number is RFC12-2.
Embodiment 3
[0026] The medium-sized industrial waste catalyst D-39 in Example 1 was replaced with a buffer solution of ammonium carbonate and ammonia, the pH value was adjusted to 12.0, the solid-to-liquid ratio was 1:5, the beating temperature was 65°C, the beating time was 120 min, and the rolling process 16.0g of modified Y-2 molecular sieve (unit cell constant 24.30, crystallinity 95%), 28.0g of tungstic acid and 20.0g of nickel nitrate were added to the mixture.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| crystallinity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More