Hydrocarbon cracking catalyst containing phosphorus and its prepn

Abstract

The hydrocarbon cracking catalyst contains molecular sieve, binder and clay and its features are the mixed sol of chlorine-containing aluminum sol and phosphorus-containing aluminium sol used as binder. The binder raises the antiwear strength of the catalyst, and decreases the chlorine content in the spray drying slurry and the catalyst. The hydrocarbon cracking catalyst results in lower gas and coke yield and higher diesel oil yield and diesel oil / gasoline ratio.

Description

Technical field

[0001] The invention relates to a petroleum hydrocarbon cracking catalyst and a preparation method thereof, in particular to a molecular sieve-containing hydrocarbon cracking catalyst using aluminum sol and phosphorus-containing aluminum sol mixed sol as a binder and a preparation method thereof. Background technique

[0002] Phosphorus-containing hydrocarbon cracking catalysts mainly have the following three types: one type is the molecular sieve component of the catalyst is a phosphorus-containing zeolite molecular sieve, as described in USP5,312,792, USP5,472,594, EP667185, etc.; the other type is the catalyst containing aluminum phosphate Or alumina-aluminum phosphate as a part of the matrix or matrix. This type of catalyst matrix has good thermal stability, good activity and selectivity, and is suitable for heavy oil cracking, such as USP 4,158,621, USP 4,179,358, USP 4,210,560, USP 4,222,896, EP488427, EP4962267, etc.; the other is to treat molecular sieve, ...