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Conversion catalyst for preparing small molecule olefin

A catalytic conversion and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, catalytic cracking, etc., can solve problems such as difficulty in maintaining the thermal balance of the reaction system, low catalyst coking rate, low acid density, etc., and achieve good hydrothermal stability and mechanical strength, good small molecular olefins, and the effect of increasing the carbon-hanging rate

Active Publication Date: 2007-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the raw materials used are light raw materials, the zeolite contained in the catalyst is a high-silica zeolite, and its acid density is low, so the coking rate on the catalyst is low, which makes it difficult to maintain the heat balance of the reaction system itself in the production process of the above-mentioned technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Example 1 illustrates: the preparation of the catalytic conversion catalyst for increasing the production of small molecule olefins provided by the present invention.

[0037] In 175 kilograms of aluminum sols (Shandong Zhoucun Catalyst Factory product, Al 2 o 3 11.4%, pH: 2-3), add 50 kg of kaolin (industrial product of Suzhou China Clay Company, solid content 80%), 15 kg of rectorite slurry (solid content is 35%) and stir for 90 minutes, then add 117 kg of Fe- ZRP (1) zeolite slurry (solid content is 30%), and 143 kg of decationized water, homogenized, spray-dried, the obtained sample was washed until the pH value was close to 6, dried, and roasted at 500 ° C for 3 hours to obtain the catalyst sample A1-5.

[0038] According to the content of each component shown in Table 4, the dosage ranges of rectorite slurry and kaolin were adjusted, and the catalysts numbered A1-10 and A1-20 were prepared according to the above method.

example 4

[0040] This example illustrates: the preparation of the catalytic conversion catalyst for increasing the production of small molecule olefins provided by the present invention.

[0041] In 160 kilograms of aluminum sols (Shandong Zhoucun Catalyst Factory product, Al 2 o 3 11.4%, pH: 2-3), add 44 kg of kaolin (industrial product of Suzhou China Clay Company, solid content 80%), 30 kg of rectorite slurry (solid content is 35%) and stir for 90 minutes, then add 117 kg of Fe- ZRP (2) zeolite slurry (solid content is 30%), and 149 kg of decationized water, homogeneous, spray-dried, the obtained sample was washed until the pH value was close to 6, dried, and roasted at 500 ° C for 3 hours to obtain the catalyst sample A2.

example 5

[0043] This example illustrates: the preparation of the catalytic conversion catalyst for increasing the production of small molecule olefins provided by the present invention.

[0044] In 160 kilograms of aluminum sols (Shandong Zhoucun Catalyst Factory product, Al 2 o 3 11.4%, pH: 2-3), add 44 kg of kaolin (industrial product of Suzhou China Clay Company, solid content 80%), 30 kg of rectorite slurry (solid content is 35%) and stir for 90 minutes, then add 117 kg of Fe- ZRP (3) zeolite slurry (solid content is 30%), and 149 kg of decationized water, homogeneous, spray-dried, the obtained sample was washed until the pH value was close to 6, dried, and roasted at 500 ° C for 3 hours to obtain the catalyst sample A3.

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PUM

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Abstract

Catalytic conversion catalyst to produce little molecule olefin comprises, with share based on catalyst weight, clay 10-70% contained rectorite of 10-50% weight, abio-oxide 5-75% and zeolite 10-65% belonged to rich-silicon of five-membered ring structure contained phosphor, rare earth, and one or more kinds of modified Fe, Zn, Mg and Ag. The catalyst has good hydrothermal stability, mechanical strength and propylene selective; besides, it improves carried carbon rate and benefit to maintain thermal balance of reaction-reproduce system self.

Description

technical field [0001] The invention relates to a catalytic conversion catalyst for preparing small molecular olefins. Background technique [0002] At present, the small molecular olefins needed in the chemical process, such as ethylene and propylene, mainly come from the steam cracking unit, and the rest come from the by-products of the refining process, such as the catalytic cracking process. In addition, small molecular olefins can also be produced by contacting hydrocarbons, especially olefins, with zeolite-containing catalysts for cracking reactions. For example, CN1414068A discloses a ZSM-5 zeolite catalyst with a silicon-aluminum ratio of 20-70 for preparing ethylene and propylene from low-value-added olefins. The zeolite contained in the catalyst is modified by at least two substances selected from group IIA metals, rare earth metal elements and phosphorus. [0003] CN1149185C discloses a method for producing ethylene and propylene by contacting a hydrocarbon feed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06C07C11/02C10G11/05
Inventor 朱根权舒兴田汪燮卿罗一斌吴治国施至诚
Owner CHINA PETROLEUM & CHEM CORP
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