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Inorganic binder containing phosphorus and aluminum compounds

A technology of inorganic binders and aluminum compounds, applied in molecular sieve catalysts, chemical/physical processes, catalyst activation/preparation, etc., can solve the problems of solidification of reactants and low activity of cracking catalysts, and achieve increased feeding speed and wear resistance Proximity, the effect of high propylene content

Active Publication Date: 2014-05-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method of phosphoraluminum sol is likely to cause solidification of reactants due to fluctuations in reaction conditions during the preparation process, and the activity of the cracking catalyst prepared by the phosphoraluminum sol prepared by this method is not high

Method used

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  • Inorganic binder containing phosphorus and aluminum compounds
  • Inorganic binder containing phosphorus and aluminum compounds
  • Inorganic binder containing phosphorus and aluminum compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This example prepares the inorganic binder of the phosphorus-containing aluminum compound provided by the present invention.

[0036] At room temperature (25°C), 1.25 kg of pseudo-boehmite (containing Al 2 o 30.76 kg), 0.26 kg of retort soil (0.20 kg on a dry basis) mixed with 1.57 kg of decationized water, beat for 30 minutes, add 1.69 kg of concentrated phosphoric acid (mass concentration 85%) to the slurry under stirring, and the addition rate of phosphoric acid is 0.03Kg Phosphoric acid / min / Kg alumina source, heat up to 70°C, and then react at this temperature for 45 minutes to prepare an inorganic binder containing phosphorus-aluminum compounds. The material ratio is shown in Table 1.

Embodiment 2～11

[0038] Examples 2-11 illustrate the preparation of the inorganic binder containing phosphorus-aluminum compound provided by the present invention.

[0039] At room temperature (25°C), mix alumina source (aluminum hydroxide or aluminum oxide), clay (rectorite or kaolin) and decationized water, beat for 30 minutes, add concentrated phosphoric acid (mass concentration 85 %), and then reacted at a temperature of 70° C. for 45 minutes to obtain an inorganic binder containing phosphorus-aluminum compounds. See Table 1 for materials, their proportions and preparation conditions.

Embodiment 12

[0049] This example illustrates the preparation of a zeolite cracking catalyst using the phosphorus-aluminum inorganic binder provided by the invention.

[0050] 4 kg (dry basis) rare earth ultra-stable Y-type zeolite is added to 8 kg of water to make rare-earth ultra-stable Y-type zeolite slurry, then add 3.5 kg (dry basis) kaolin and 1.5 kg (based on dry basis) in the zeolite slurry Alumina meter) pseudoboehmite, beating for 60 minutes, adding 0.16 kg of hydrochloric acid (concentration 36% by weight), beating for 20 minutes, to obtain slurry, its pH value is 3.1, then adding the phosphorus-containing aluminum prepared in Example 3 0.4 kg of inorganic binder was beaten for 10 minutes, then 0.6 kg of aluminum sol was added, beaten for 30 minutes, spray-dried, and calcined at 600°C for 2 hours to obtain a cracking catalyst. The feed ratio and wear index of the catalyst are shown in Table 3.

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Abstract

The inventive inorganic binder containing phosphorus and aluminum compounds comprises (by weight percentages) alumina 15-40, phosphorus pentoxide 45-80, and clay 1-40. The binder has P / Al weight ratio of 1-6, pH of 1-3, and solid content of 15-60 wt%. The preparation method includes mixing acid-soluble aluminum hydroxide and / or alumina, clay and deionized water; pulping into pulp having solid content of 15-45%; adding concentrated phosphoric acid into the pulp under stirring at P / Al weight ratio of 1-6; and reacting at 50-99 DEG C for 15-90 min. The preparation method can avoid binder solidification due to overheat caused by heat release of non-uniform local instantaneous intensive reaction of materials. The binder can improve wear resistance, activity and selectivity of FCC catalyst.

Description

technical field [0001] The invention relates to an inorganic binder of a phosphorus-containing aluminum compound used for a cracking catalyst and a preparation method thereof. Background technique [0002] Heavy oil catalytic cracking usually uses a cracking catalyst with a high molecular sieve content. In order to make it have better wear resistance, a binder with better bonding performance is often used, such as a binder containing phosphorus and aluminum compounds. [0003] CN1070384A and CN1070385A respectively disclose a preparation method of phosphorus-containing aluminum sol. The preparation method provided by CN1070384A is: adding orthophosphoric acid or aluminum dihydrogen phosphate into aluminum sol, and then preparing phosphorus-containing aluminum sol through steps such as high-temperature depolymerization and concentration. The preparation method provided by CN1070385A is: reacting the mixed solution of metal aluminum, hydrochloric acid (or aluminum chloride) a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/185B01J29/14B01J37/00C10G11/02
Inventor 陈蓓艳朱玉霞蒋文斌沈宁元田辉平黄志青宋海涛罗一斌欧阳颖
Owner CHINA PETROLEUM & CHEM CORP
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