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Petroleum hydrocarbon cracking catalyst

A cracking catalyst, catalyst technology, applied in cracking, petroleum industry, catalytic cracking and other directions, can solve the problems of poor heavy oil cracking capacity, influence of light oil yield, high coke yield, and achieve high light oil yield and increase Small, high-octane effect

Inactive Publication Date: 2004-09-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The active components of the catalysts in the above documents are all Y-type zeolite and / or ZSM-5 zeolite, wherein Y-type zeolite generally adopts a single hydrogen type, ultra-stable type or rare earth type Y zeolite, so the cracking capacity of heavy oil is slightly lower in the cracking reaction. Poor, high coke yield, and because the ZSM-5 zeolite used is mainly used to crack small straight-chain molecules, it is more inclined to produce propane and butane (liquefied petroleum gas) or low-carbon olefins, so light oil (gasoline + Diesel) Yield is affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of the ZSM-5 structure zeolite used in the catalyst of the present invention

[0035]Take 3 kilograms of HZSM-5 zeolite and place it in 50 liters of NaOH aqueous solution with a concentration of 0.1 mole (measured at PH=11.5), stir at a constant temperature of 80 ° C for 3 hours under reflux, filter, wash with 3 liters of deionized water, press Zeolite: ammonium nitrate: water = 1:1:10 weight ratio to make the zeolite ammonium exchange at 90°C for 0.5 hours, and then repeat the ammonium exchange once after filtering, then filter, wash, dry at 110°C for 5 hours, and roast at 500°C for 3 hours. hours, the ZSM-5 structure zeolite required in the present invention is obtained.

[0036] This zeolite is referred to as MMM-1. Its silicon-aluminum ratio is 45, the primary particle diameter measured by the electron microscope is 2.7 μm, and the mesopore surface area measured by the BET low-temperature nitrogen adsorption method is 50 m 2 / g.

[0037] (2) prepa...

Embodiment 2

[0040] (1) Preparation of the ZSM-5 structure zeolite used in the catalyst of the present invention

[0041] Take 3 kilograms of HZSM-5 zeolite and place it in 50 liters of NaOH aqueous solution with a concentration of 0.2 moles (measured pH = 11.8), stir at a constant temperature of 90 ° C for 1 hour under reflux, filter, wash with 3 liters of deionized water, press the zeolite : Ammonium nitrate: water = 1:1:10 weight ratio to make the zeolite exchange ammonium at 90°C for 0.5 hours, and then repeat the ammonium exchange once after filtration, then filter, wash, dry at 110°C for 5 hours, and roast at 500°C for 3 hours , that is, the required ZSM-5 structure zeolite in the present invention is obtained.

[0042] This zeolite is referred to as MMM-2. Its silicon-aluminum ratio is 38, the primary particle diameter measured by the electron microscope is 2.5 μm, and the mesopore surface area measured by the BET low-temperature nitrogen adsorption method is 95m 2 / g.

[0043] (...

Embodiment 3

[0046] (1) Preparation of the ZSM-5 structure zeolite used in the catalyst of the present invention

[0047] Take 3 kilograms of HZSM-5 zeolite and place it in 50 liters of NaOH aqueous solution with a concentration of 0.2 moles (pH = 11.8), stir at a constant temperature of 90 ° C under reflux for 3 hours, filter, wash with 3 liters of deionized water, press the zeolite : Ammonium nitrate: water = 1:1:10 weight ratio to make the zeolite exchange ammonium at 90°C for 0.5 hours, and then repeat the ammonium exchange once after filtration, then filter, wash, dry at 110°C for 5 hours, and roast at 500°C for 3 hours , that is, the required ZSM-5 structure zeolite in the present invention is obtained.

[0048] This zeolite is referred to as MMM-3. Its silicon-aluminum ratio is 31, the primary particle diameter measured by the electron microscope is 2.2 μm, and the mesopore surface area measured by the BET low-temperature nitrogen adsorption method is 120 m 2 / g.

[0049] (2) pre...

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Abstract

A cracking catalyst for petroleum hydrocarbon is composed of the Y-type zeolite which consists of super-stable RE Y-type zeolite and high-Si Y-type zeolite, the ZSM-5 zeolite whose mole ratio of silicon oxide to aluminium oxide is 15-200, and the carrier. It can decrease the coke output rate in the catalytic cracking of heavy oil, and increase the octane number of gasoline and the output rate of light oil.

Description

technical field [0001] The invention relates to a petroleum hydrocarbon cracking catalyst. Specifically, it relates to a catalyst for petroleum hydrocarbon cracking containing Y-type and ZSM-5 structure zeolites. Background technique [0002] With the development of the automobile industry and the enhancement of people's awareness of environmental protection, the demand for high-octane unleaded gasoline is increasing, and more than 70% of gasoline is produced by catalytic cracking technology, so the octane of catalytic cracking gasoline is increased. It is the task of petrochemical enterprises to increase the alkane number to meet the needs of the society. At present, a more flexible and effective method to increase the octane number of gasoline is to use ZSM-5 zeolite as one of the active components of the cracking catalyst. [0003] USP3,758,403 first reported a kind of zeolite containing Y-type zeolite and ZSM-5 zeolite, which can improve gasoline octane number and impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/05
Inventor 王殿中罗一斌宗保宁舒兴田何鸣元
Owner CHINA PETROLEUM & CHEM CORP
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