Catalytic cracking catalyst

A cracking catalyst, catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low conversion rate of heavy oil, low gasoline yield, low rare earth content, etc.

Active Publication Date: 2009-09-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Due to the low content of rare earths in the crystals of ultra-stable Y molecular sieves currently used in catalytic cracking catalysts, the conversion rate of heavy oil and the yield of gasoline are relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 1500 grams of DASY2.0 (dry basis), add it to 15 liters of 0.2N oxalic acid aqueous solution and stir to mix evenly, raise the temperature to 90-100°C and keep it for 1 hour, then filter, wash with water, take out the filter cake, and place it in a 15-liter decanter. Cationic water, add 480ml of RECl 3 Solution (RE in solution 2 o 3 content is 319g / L), stirred, heated to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A1, and its physical data is shown in Table 2.

[0041] Take 952 grams of aluminum sol with an alumina content of 21% by weight and add it to 2086 grams of decationized water, start stirring, add 2105 grams of kaolin with a solid content of 76% by weight and beat for 60 minutes. Get 1311 grams of pseudo-boehmite with an alumina content of 61% by weight and add it to 5212 grams of decationized water, add 128ml of chemically pure...

Embodiment 2

[0043] Take 1500 grams of DASY2.0 (dry basis), add it to 15 liters of 0.1N oxalic acid aqueous solution and stir to make it evenly mixed, raise the temperature to 90-100°C and keep it for 1 hour, filter, wash with water, take out the filter cake, and place it in a 15-liter decationized water and add 480ml of RE(NO 3 ) 3 Solution (solution concentration: in RE 2 o 3 Calculated as 319g / L), stirred, heated up to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A2, and its physical properties are shown in the table 2.

[0044] 952 grams of aluminum sol with an alumina content of 21% by weight was added to 834 grams of decationized water, stirring was started, and 1947 grams of kaolin with a solid content of 76% by weight was added for beating for 60 minutes. Get 1311 grams of pseudo-boehmite with an alumina content of 61% by weight and add it to 6529 grams...

Embodiment 3

[0046] Take 1000 grams of DASY2.0 (dry basis), add it to 10 liters of 0.2N citric acid aqueous solution and stir to make it evenly mixed, raise the temperature to 90-100 ° C and keep it for 1 hour, filter, wash with water, take out the filter cake, and place it in 10 liters of deionized water and add 320ml of RECl 3 Solution (solution concentration: in RE 2 o 3 Calculated as 319g / L), stirred, heated up to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A3, and its physical properties are shown in the table 2.

[0047] 952 grams of aluminum sol with an alumina content of 21% by weight was added to 1522 grams of decationized water, stirring was started, and 1947 grams of kaolin with a solid content of 76% by weight was added for beating for 60 minutes. Get 1311 grams of pseudoboehmite with an alumina content of 61% by weight and add it to 4243 grams of d...

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Abstract

A cracking catalyst, containing 10% to 50% by weight of high rare earth ultra-stable Y-type molecular sieve based on dry basis, 10% to 40% by weight of alumina binder based on alumina and 10% by weight to 70% by weight of clay; the high-rare-earth ultra-stable Y molecular sieve is obtained by steps including the following method: ultra-stable Y-type zeolite and an acid solution with an equivalent concentration of 0.01N to 2N at a liquid-solid ratio of 4 to 20 at 20 Fully mix at a temperature range of ℃ to 100 ℃, stir for 10 minutes to 300 minutes, wash and filter, then add a rare earth salt solution to perform rare earth ion exchange, wash, filter and dry after the exchange. The catalyst of the invention is used for catalytic cracking of heavy oil, and has high gasoline yield and high conversion rate.

Description

technical field [0001] The invention relates to a hydrocarbon oil catalytic cracking catalyst. Background technique [0002] With the increasing weight of catalytic cracking raw oil and increasingly stringent environmental regulations, catalytic cracking catalysts are required to improve the conversion of heavy oil and the ability to resist heavy metal pollution, while at the same time producing more low-carbon olefins and low-sulfur high-octane gasoline. The key to obtaining high-yield, high-octane gasoline is that the active component of the catalyst, that is, the rare earth high-silicon Y-type zeolite, can keep the crystal structure intact, have high thermal and hydrothermal stability, strong acidity and low acid density. In order to obtain the rare earth high silica zeolite with the above properties, the artificially synthesized NaY zeolite is usually subjected to appropriate ion exchange and ultra-stable modification treatment to reduce the aluminum content in the Y-typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08
Inventor 周灵萍许明德朱玉霞田辉平张蔚琳于善青李峥唐立文龙军
Owner CHINA PETROLEUM & CHEM CORP
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