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 the problems of low selectivity and limited effect of low-carbon olefins, achieve rich mesopores, reduce coking deactivation, Effect of suppressing surface non-selective side reactions
CN107971028AActive Publication Date: 2018-05-01CHINA PETROLEUM & CHEM CORP +1
4 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-05-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides a catalytic cracking catalyst and a preparation method thereof, wherein the catalyst comprises 15-65% of natural minerals, 10-60% of an oxide, and 25-75% of a Y type molecular sieve and a phosphorus-containing IMF-structure molecular sieve, wherein the n(SiO2) / n(Al2O3) of the phosphorus-containing IMF-structure molecular sieve is more than 18 and less than 70, the phosphoruscontent is 1-15 wt%, the Al distribution parameter D is more than or equal to 0.6 and is less than or equal to 0.85, the volume of the mesopores accounts for 40-70% of the total pore volume, the volume of the mesopores with the pore size of 2-20 nm accounts for more than 85% of the total mesopore volume, the amount of the strong acid accounts for 45-75% of the total acid amount, and a ratio of the acid B to the acid L is 8-30. According to the present invention, the catalytic cracking catalyst has high low-carbon olefin yield and high BTX yield in the catalytic cracking of petroleum hydrocarbons.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof Background technique

[0002] For a long time, ethylene, propylene and butene have been the basic organic chemical raw materials for synthetic resin, synthetic fiber and synthetic rubber, among which propylene is an important raw material for the manufacture of petrochemical products after ethylene. At present, the largest source of propylene at home and abroad is the main by-product of thermal cracking to produce ethylene. Liquid-based ethylene plants usually produce about 15% of propylene, providing about 70% of the propylene consumed by the petrochemical industry, while the second largest source of propylene is almost all from FCC units, providing about 30% of demand, In the United States, FCC units provide about half of petrochemicals' propylene demand.

[0003] Due to the rapidly growing demand for polypropylene, the demand for propylene in the petrochemical ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More