Catalyst for producing propane and high octane number gasoline by using butane, and preparation method thereof

A high-octane gasoline and catalyst technology, which is applied in the non-hydrogenation conversion of alkanes into small molecular alkanes and gasoline components, can solve the problems of low propane content, not very good ethylene cracking raw materials, and high butane content, and achieve dry Low gas yield, reduced olefin content, good economical effect

Active Publication Date: 2012-12-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of butane in the liquefied gas produced by the aromatization of carbon tetraolefins is relatively high (60%-90% by mass), and the content of propane is relatively small, so it is not a good raw material for ethylene cracking

Method used

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  • Catalyst for producing propane and high octane number gasoline by using butane, and preparation method thereof

Examples

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preparation example Construction

[0018] The preparation method of the catalyst provided by the present invention comprises mixing the mesoporous silica-alumina zeolite and the precursor of the binder, extruding into rods, drying, roasting, and treating with steam at 430-570°C. The mass ratio of the catalyst is 0.5-5.0, so that the α value of the catalyst after steam treatment is 25-50, preferably 25-40.

[0019] In the above method, the mesoporous silica-alumina zeolite is selected from one of ZSM-5, ZSM-11, ZSM-12, ZSM-35, MCM-22 and MCM-41 zeolites or any two or more of them The form in which the zeolite exists is preferably the hydrogen form. The binder precursor is preferably pseudo-boehmite, boehmite or silica sol.

[0020] The molding method of the catalyst of the present invention is: mixing the mesoporous silica-alumina zeolite and the precursor of the binder, adding an appropriate amount of water and a peptizer to knead and extrude into a strip. The peptizer is selected from nitric acid, hydrochlori...

example 1

[0029] The following examples prepare catalysts of the invention.

[0030] Get 130 gram of silicon oxide / alumina mol ratios and be 56 HZSM-5 zeolite powder (build factory molecular sieve factory production), 70 gram aluminum hydroxide powders (Qilu Catalyst Factory production, dry basis alumina content 75 mass %), add 90 Milliliters of water and 4 milliliters of nitric acid solution with a concentration of 1% by mass were kneaded, extruded, dried at 110° C. for 4 hours, and calcined at 550° C. for 4 hours. Then put it into a tubular reactor, raise the temperature to 550° C. in an air stream under normal pressure, and pass in steam for 4 hours, with a total water intake of 300 grams. The composition and α value of the prepared catalyst A are shown in Table 1.

example 2

[0032] Getting 130 grams of silicon oxide / alumina mol ratio is the hydrogen type MCM-22 zeolite powder (production of molecular sieve factory) of 30, 70 grams of aluminum hydroxide powder (production of Qilu Catalyst Factory, dry base alumina content 75 mass %), Add 90 milliliters of water and 4 milliliters of nitric acid solution with a concentration of 1% by mass, knead, extrude, dry at 110° C. for 4 hours, and roast at 550° C. for 4 hours. Then put it into a tubular reactor, raise the temperature to 550° C. in an air stream under normal pressure, and pass in steam for 4 hours, with a total water intake of 300 grams. The composition and α value of the prepared catalyst B are shown in Table 1.

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Abstract

The invention provides a catalyst for producing propane and high octane number gasoline by using butane. The catalyst comprises, by mass, 20-85% of mesoporous Si-Al zeolite and 15-80% of a binder, and has an alpha value of 25-50. With the catalyst of the present invention, butane can be converted into propane under a certain reaction condition, and a high octane number gasoline blending component is by-produced, wherein the produced propane is used for ethylene cracking raw materials and other chemical industry uses, and the high octane number gasoline blending component is used for blending catalytic cracking gasoline so as to substantially reduce olefin content.

Description

technical field [0001] The invention relates to a method for catalytic conversion of alkanes, specifically, a method for non-hydrogenation conversion of alkanes into small molecular alkanes and gasoline components. Background technique [0002] In recent years, the domestic liquefied petroleum gas market has overcapacity, coupled with the fact that the consumption structure of civil liquefied petroleum gas resources is tilting towards clean and environmentally friendly energy sources such as natural gas and coal power, the existing market resource supply pattern of liquefied petroleum gas is under great impact. At the same time, with the gradual excavation of various components in liquefied gas, the deep processing of liquefied gas has developed rapidly. The aromatization, isomerization, methyl ethyl ketone, and sec-butyl acetate projects using olefins in liquefied gas as raw materials and Projects such as maleic anhydride, butadiene and isobutene, which use alkanes as raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J29/70C07C9/08C07C4/06C10G50/00
Inventor 于中伟王子健马爱增刘洪全
Owner CHINA PETROLEUM & CHEM CORP
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