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
CN102847547BActive Publication Date: 2014-05-28CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2014-05-28

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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.
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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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