Catalytic cracking additive for promoting liquid gas propylene concentration
A catalytic cracking additive and liquefied gas technology, applied in physical/chemical process catalysts, molecular sieve catalysts, hydrocarbon cracking and hydrocarbon production, etc., can solve the problems of low propylene concentration and low propylene selectivity, and achieve increased propylene concentration and selectivity sexual effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0029] The catalytic cracking aid of the present invention can be prepared by adding steps of introducing copper additives and phosphorus additives and roasting in the existing cracking catalyst preparation method. For example, the preparation method includes mixing zeolite, clay, and inorganic oxide binders. Beating, spray drying, any steps of slurry preparation before spray drying or steps of introducing copper additives and phosphorous additives by means of impregnation (or chemisorption) and roasting after spray drying. The order of introducing copper and phosphorus is not required, they can be introduced at the same time or separately. If the copper or phosphorus additive is introduced by impregnation or chemical adsorption after spray drying, the introduction should also include the steps of separating the additive from the impregnation solution or adsorption solution, and drying, wherein the drying temperature is from room temperature to 400°C. Preferably, it is 100°C t...
Embodiment 1
[0055] Preparation of phosphate-aluminum sol: 1.05 kilograms of pseudoboehmite (dry basis) and 3.35 kilograms of decationized water were mixed and beaten for 30 minutes, and 4.9 kilograms of concentrated phosphoric acid (chemically pure, containing 85% by weight of phosphoric acid) were added to the slurry under stirring, and the temperature was raised. to 70°C, and react at this temperature for 45 minutes to produce a colorless and transparent phosphoraluminum sol. where P 2 o 5 The content is 30.6% by weight, Al 2 o 3 The content is 10.5% by weight, pH=1.7.
[0056] Take 1.75 kg (dry basis) A 1 , 1.4 kg (dry basis) of kaolin and 0.65 kg (dry basis) of pseudo-boehmite, mixed with 6.2 kg of decationized water and 2.79 kg of aluminum sol for beating for 120 minutes, adding 1 liter of CuCl under stirring 2 .2H 2 O aqueous solution (which contains 100 grams of CuO), the pH value of the slurry is adjusted to 3.0 with hydrochloric acid. Continue to beat the mixture for 45 mi...
Embodiment 2
[0058] Take 1.84 kg (dry basis) A 1 , 1.33 kilograms (dry basis) kaolin and 0.98 kilograms (dry basis) pseudo-boehmite, add 7.2 kilograms of deionized water and 2.79 kilograms of aluminum sol beating for 120 minutes, add 1 liter of Cu(NO 3 ) 2 .6H 2 O aqueous solution (which contains 250 grams of CuO), the pH value of the slurry is adjusted to 2.8 with hydrochloric acid. The mixture was further beaten for 45 minutes, and then the resulting slurry was spray-dried at an inlet temperature of 500° C. and an exhaust gas temperature of 180° C. to obtain microspheres with an average particle diameter of 65 μm. The microspheres were calcined at 500°C for 1 hour to obtain 36.8 wt% A 1 , 26.6 wt% kaolin, 31.6 wt% Al 2 o 3 and 5.0 wt % Cu additive (as CuO).
[0059] Get 1 kg (dry basis) of the obtained microsphere product, add 10 liters of decationized water and 100 grams of diammonium hydrogen phosphate, heat up to 60° C. under stirring, react at this temperature for 20 minutes, v...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
| Average particle diameter | aaaaa | aaaaa |
| Grain diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More