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A kind of catalytic cracking catalyst and its preparation method and application

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problem of high coke selectivity, achieve high diesel yield, be conducive to diffusion and cracking, and low coke selectivity. Effect

Active Publication Date: 2018-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the high defect of coke selectivity when adopting existing catalytic cracking catalyst to carry out heavy oil catalytic cracking, and to provide a kind of new one that has lower coke selectivity, higher cracking activity and can obtain higher The catalytic cracking catalyst of the diesel oil yield, the preparation method of the catalytic cracking catalyst and the application of the catalytic cracking catalyst in heavy oil catalytic cracking

Method used

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  • A kind of catalytic cracking catalyst and its preparation method and application
  • A kind of catalytic cracking catalyst and its preparation method and application

Examples

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preparation example Construction

[0023] In the preparation process of the above-mentioned modified aluminum sol, water can be introduced into the reactor through a soluble silicon-containing compound solution, through a chloride solution, through a soluble phosphorus-containing compound solution, by adding water such as deionized water, or through a combination of the above methods Water is introduced into the reactor, preferably, the weight ratio of the water introduced into the reactor before adding the chloride to the soluble silicon-containing compound (calculated as Si element) introduced into the reactor before adding the chloride is 100:0.1- 10, such as 100:1-10 or 100:0.1-5 or 100:0.15-1.4 or 100:0.2-1.3:1.

[0024] The content of silicon (calculated as silicon element) in the modified aluminum sol obtained in the present invention is 0.1-1 wt%, preferably 0.2-0.9 wt%, for example 0.3-0.85 wt%.

[0025] In the preparation process of the above-mentioned modified aluminum sol, the amount of metal alumin...

preparation example

[0069] In the following preparation examples, comparative preparation examples, examples and comparative examples:

[0070] The purity of aluminum chips used is 99.2% by weight, and the purity of aluminum particles is 98.8% by weight; the 1:1 chemically pure hydrochloric acid used is a mixture of 1 volume concentration of 36% by weight chemically pure hydrochloric acid and 1 volume water; the 1:1 chemically pure phosphoric acid used It is a mixture of 1 volume of chemically pure phosphoric acid with a concentration of 85% by weight and 1 volume of water; the rare earth chloride is purchased from Baotou Steel Rare Earth High Technology Co., Ltd., and the rare earth elements are La and Ce.

[0071] The specific surface area, pore volume and average pore diameter were all measured by the low-temperature nitrogen adsorption-desorption method, and the instrument used was the physical and chemical adsorption instrument ASAP2400 of Micro meritics company in the United States; 2 O, Al...

preparation example 1

[0076] This preparation example is used to illustrate the preparation method of the silicon-modified aluminum sol provided by the present invention.

[0077] 286 grams of aluminum chips (calculated as Al), 1481 grams of deionized water and 119 grams of water glass aqueous solution (containing 9.33% by weight of Si element and 4.63% by weight of Na element) were added into the three-necked flask and heated to 60°C. Slowly add 921 ml of 1:1 chemically pure hydrochloric acid into the three-necked flask to make it react with aluminum chips. The addition time of hydrochloric acid is 3 hours; The product was cooled to 60-70°C and filtered to obtain modified aluminum sol SA-1. The residual aluminum chips from the reaction were weighed to be 36 grams, that is, the aluminum excess was 14.8% by weight. After analyzing the modified aluminum sol SA-1, the results are as follows: Al content is 9.0% by weight, Cl content is 6.7% by weight, Si content is 0.41% by weight, Al / Cl (weight ratio...

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Abstract

The invention discloses a catalyst for catalytic cracking, its preparation method and application. The catalytic cracking catalyst contains a cracking active component, clay and a binder, wherein the cracking active component contains 35-70% by weight of the first Y-type molecular sieve, 20-60% by weight of the second Y-type molecular sieve and The third Y-type molecular sieve of 2-20% by weight; the binder is a modified aluminum sol containing Cl and Si, based on the total weight of the modified aluminum sol, the Al content is 8-13% by weight, The content of Cl is 4-9% by weight, the weight ratio of Al / Cl is 1.2-2.2:1, the content of Si is 0.1-1% by weight, and the pH value of the modified aluminum sol is 2.2-5.2. The catalytic cracking catalyst not only has lower coke selectivity and higher catalytic cracking activity in the process of catalytic cracking of heavy oil, but also can obtain higher yield of diesel oil.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst, a preparation method of the catalytic cracking catalyst and an application of the catalytic cracking catalyst in heavy oil catalytic cracking. Background technique [0002] Catalytic cracking (FCC) is an important secondary processing process of crude oil and occupies a pivotal position in the oil refining industry. In the catalytic cracking process, heavy fractions (such as vacuum distillate oil or residues of heavier components) react in the presence of catalysts and are converted into high value-added products such as liquefied gas, gasoline, and diesel oil. In this process, it usually requires Catalytic materials with high cracking activity are used. Microporous zeolite catalytic materials are widely used in petroleum refining and processing industries due to their excellent shape-selective catalytic performance and high cracking reactivity. At present, catalytic cracking catalysts mainly in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01J29/08B01J35/10C10G11/05
Inventor 严加松赵留周朱玉霞达志坚宋艾罗
Owner CHINA PETROLEUM & CHEM CORP
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