Catalytic cracking addition agent for heavy hydrocarbon oil and preparation method thereof

Abstract

The invention relates to a heavy hydrocarbon oil catalytic cracking addition agent and a preparation method which belongs to the field of catalytic cracking catalyst of hydrocarbon oil, in particular to an optimized addition agent of a hydrocarbon oil catalytic cracking catalyst. The invention is characterized by comprising the following components (weight percent): 10 to 65 percent of Al2O3, 2 to 13 percent of P (counted in P element), 1 to 15 percent of SiO2 as well as 10 to 65 percent of clay. The addition agent of the invention can be compounded and used with various catalytic cracking catalysts to improve the effective conversion rate of the heavy hydrocarbon oil and the selectivity of a cracking reaction is good, thereby improving the yield of gasoline and liquid gas, improving the gasoline octane number, reducing the olefin content in the gasoline, endowing the catalyst with the performance for resisting the pollution of heavy metals, providing and maintaining the continuous high activity and aquathermal stability of the catalyst, enhancing the wear-resistant intensity performance of the catalyst, and prolonging the service life of the catalyst. The addition agent is an ideal heavy hydrocarbon oil catalytic cracking addition agent.

Description

technical field [0001] The invention relates to a catalytic cracking additive for heavy hydrocarbon oil and a preparation method thereof. The invention belongs to the category of catalytic cracking catalysts for hydrocarbon oils; in particular, it relates to performance optimization aids for catalytic cracking catalysts for hydrocarbon oils. Background technique [0002] With the continuous extraction of oil, crude oil gradually becomes thicker and heavier; the demand for energy drives people not only to convert wax oil into gasoline and liquefied gas as much as possible, but also to convert inferior hydrocarbon oils such as heavy oil and residual oil The conversion rate of catalytic cracking is improved; high octane number and low olefin content are the eternal pursuit of catalytic cracking gasoline. Apparently, the tendency of catalytic cracking raw oil to be heavier is becoming more and more prominent. The heavy conversion of raw oil brings the following problems to the...

AI Technical Summary

Problems solved by technology

[0004] 2. The enrichment of heavy metal ions in heavy raw oil will lead to catalyst poisoning, reduced activity, or even loss of activity. Anti-heavy metal pollution has also become an essential performance of catalytic cracking catalysts;

[0005] 3. Highly active catalysts increase the conversion rate of heavy feedstock oil, but at the same time lead to an increase in the content of olefins in catalytic cracking product gasoline, which is limited by environmental protection;

[0006] 4. The forced increase of the catalytic cracking temperature will increase the output of coke and dry gas, which will affect the normal operation of the catalytic cracking equipment, and the requirements for the wear resistance strength and hydrothermal stability of the catalyst will continue to increase

But the effect is not ideal