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Catalytic cracking catalyst and preparation method thereof

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as chlorine corrosion and environmental protection problems that cannot be excluded, and achieve a simple and easy preparation method, good adhesion performance, and improved Effect of Aromatic Content

Active Publication Date: 2015-08-19
山东迅达化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method simplifies the process of phosphorus-containing aluminum sol, it still only partially replaces chlorine-containing aluminum sol, and the corrosion and environmental protection problems of chlorine cannot be ruled out.

Method used

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  • Catalytic cracking catalyst and preparation method thereof
  • Catalytic cracking catalyst and preparation method thereof
  • Catalytic cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of phosphoraluminum glue with Al / P=0.45:1:

[0042] 1200 grams of aluminum hydroxide (containing Al 2 o 3 65%) with 6500 grams of deionized water to disperse and beat, then raise the temperature to 100±5°C, stir and slowly add 3918.5 grams of concentrated phosphoric acid, and keep reacting at 100±5°C for 1 hour until it becomes a transparent colloid. After analysis, the phosphoraluminum glue contains 7.6% Al 2 o 3 , containing 23.5% by weight of P 2 o 5 , Al / P=0.45.

Embodiment 2

[0044] Preparation of phosphoraluminum glue with Al / P=0.75:1:

[0045] 1200 grams of pseudoboehmite (containing Al 2 o 3 65%) with 4200 grams of deionized water to disperse and beat, then raise the temperature to 100±5°C, slowly add 2351 grams of concentrated phosphoric acid with stirring, and keep reacting at 100±5°C for 2 hours until it becomes a transparent colloid. After analysis, the phosphoraluminum glue contains 11.4% by weight Al 2 o 3 , containing 21.2 wt% P 2 o 5 , Al / P=0.75.

Embodiment 3

[0047] 1500 grams (dry basis) of rare earth-containing ultra-temperature Y molecular sieve and 400 grams (dry basis) of ZSM-5 molecular sieve and 4000 grams of water were beaten evenly to make molecular sieve slurry for later use.

[0048] Beat 1,700 grams of kaolin and 4,000 grams of water evenly, add 1,400 grams (in Al 2 o 3 Calculated) aluminum sol, beating evenly, then adding the prepared molecular sieve slurry, spray drying after homogenization, and roasting at 650°C for 3 hours to obtain catalyst A. Its composition and wear strength are shown in Table 1, and the evaluation results of heavy oil micro-reflection are shown in Table 2.

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Abstract

The invention belongs to the technical field of catalysts, and in particular relates to a catalytic cracking catalyst and a preparation method thereof. According to the catalytic cracking catalyst, phosphorus aluminum glue is used as an adhesive; and in a catalyst preparation process, zinc oxide is added and is used as an auxiliary agent. The catalyst contains the zinc oxide, and the phosphorus aluminum glue is used as the adhesive; and the catalyst has the functions of improving the yield of propylene and increasing the aromatics content in gasoline. Compared with the catalyst which is high in cost and contains chlorine aluminum gel, the catalyst solves the problems of corrosion and discharging of hydrochloric acid gas and does not contain chlorine; the phosphorus aluminum glue is high in adhesion, so that the catalyst is high in abrasion resistance; and the preparation method is simple and feasible and is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalytic cracking catalyst and a preparation method thereof. Background technique [0002] At present, catalytic cracking catalysts used in industry are generally made of molecular sieves (active components), matrix clay and binders, and the binders used are mostly pseudoboehmite and alumina sol. However, the use of aluminum-based binders, especially the use of aluminum sol, will cause serious problems. The higher chloride ions contained in them will produce a large amount of hydrochloric acid gas during spray drying, which will corrode equipment and cause air pollution. When the catalyst is used in the device, the residual chloride ions in the catalyst will corrode the equipment and affect the activity of the catalyst. [0003] In recent years, phosphorus-aluminum glue has been introduced into the preparation of catalytic cracking catalysts as a binder to impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/40C10G11/05
Inventor 苏建明崔立滨胡文宾朱敦富王强路新龙
Owner 山东迅达化工集团有限公司
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