Catalytic cracking catalyst

A cracking catalyst and catalyst technology, applied in catalytic cracking, cracking, petroleum industry and other directions, can solve the problems of low conversion rate of heavy oil, low yield of light oil, low content of rare earth, etc.

Active Publication Date: 2008-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Due to the low content of rare earths in the ultra-stable Y molecular sieve crystals currently used in catalytic cracking catalysts, the conversion rate of heavy oil and the yield of light oil are relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix 1500 grams of DASY2.0 (dry basis) with 15 liters of 0.2N oxalic acid aqueous solution, stir to make it evenly mixed, raise the temperature to 95°C, keep it for 1 hour, filter, wash with water, take out the filter cake, and place it in 15 liters of decationized water , add 480ml RECl 3 Solution (RE in solution 2 o 3 content is 319g / L), stirred, heated to 92°C and maintained 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 properties are shown in Table 2 .

[0043] Get 524 grams of pseudo-boehmite with an alumina content of 61% by weight and add it to 2606 grams of decationized water, add 65ml of chemically pure hydrochloric acid (containing 31% by weight of HCl) under stirring, and age at 70°C for 1 hour, then Add 55ml of phosphoric acid (produced by Beijing Chemical Plant, concentration 85%, analytically pure) and magnesium chloride hexah...

Embodiment 2

[0046] 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 95 ° C, keep it for 1 hour, filter, wash with water, take out the filter cake, and place it in a 15 liter cationic 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 92°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 designated as A2, and its physical properties are shown in Table 2.

[0047] 328 grams of pseudo-boehmite with an alumina content of 61% by weight was added to 1632 grams of decationized water, and 41 ml of chemically pure hydrochloric acid (containing 31% by weight of HCl) was added under stirring, then aged at 70° C. for 1 hour, and then Add 240 grams of magnesium chloride hexahydrate (produced by Beijing Shuanghuan Reage...

Embodiment 3

[0050] Take 1000 grams of DASY2.0 (dry basis), add it to 10 liters of 0.2N citric acid aqueous solution, stir to make it evenly mixed, raise the temperature to 95°C and keep it for 1 hour, filter, wash with water, take out the filter cake, and place it in a 10-liter deionized water and add 320ml of RECl 3 Solution (solution concentration: in RE 2 o 3 Calculated as 319g / L), stirred, heated up to 93°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 Table 2.

[0051] Get 328 grams of pseudo-boehmite with an alumina content of 61% by weight and add it to 1632 grams of decationized water, add 41ml of chemically pure hydrochloric acid (with an HCl content of 31% by weight) under stirring, and age at 70°C for 1 hour, then Add 98ml of phosphoric acid (produced by Beijing Chemical Plant, concentration 85%, analytically pure),...

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Abstract

The invention relates to cracking catalyst, containing rare earth ultrastable Y-type zeolite and stroma, wherein the stroma contains alumina with additive; the alumina with additive contains the following composition in percentage by weight: 60 to 99.5 percent of alumina and 0.5 to 40 percent of additive; the additive is selected from one or a plurality of compounds containing alkaline earth, lanthanide metal, silicon, gallium, boron or phosphorus elements; the rare earth ultrastable Y-type zeolite is obtained through a method comprising the following steps that: ultrastable Y-type zeolite and an acid solution with the equivalent concentration between 0.01 and 2 N are mixed with the liquid/solid weight ratio of 4 to 20 in the temperature range between 20 and 100 DEG C, stirred for 10 to 300 minutes, washed and filtered; rare earth salt solution is added in to exchange rare earth ions; the solution is washed and filtered after exchange. The catalyst is strong in heavy oil cracking capability, high in light oil yield and low in coke yield.

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 Applications(China)
IPC IPC(8): C10G11/05
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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