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Catalyst for producing gasoline by methanol conversion and giving consideration to propylene yield and preparation method thereof

A methanol conversion and catalyst technology, which is used in physical/chemical process catalysts, molecular sieve catalysts, and bulk chemical production to improve the ability to resist market risks, reduce molecular diffusion resistance, and facilitate olefin selectivity.

Active Publication Date: 2014-12-17
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems in the methanol conversion reaction in the prior art, the embodiment of the present invention provides a catalyst for methanol conversion to produce gasoline while taking into account the yield of propylene and its preparation method

Method used

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  • Catalyst for producing gasoline by methanol conversion and giving consideration to propylene yield and preparation method thereof
  • Catalyst for producing gasoline by methanol conversion and giving consideration to propylene yield and preparation method thereof
  • Catalyst for producing gasoline by methanol conversion and giving consideration to propylene yield and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0052] Specifically, the preparation method of the modified binder includes:

[0053] Metal modification treatment: Mix the binder with 2mol / L metal salt solution under 60℃ water bath conditions and stir for 4h, and then stand at room temperature for 4-6h to obtain modified binder I; among them, the metal salt solution The mass of the metal salt is calculated based on the mass of the metal oxide corresponding to the metal. The metal oxide is selected from at least one of Zn, W, B, P, Zr, Mg and Mn oxides. The mass is 0.5%-15% of the mass of the binder;

[0054] Static hydrothermal crystallization treatment: Put the binder in a crystallization kettle, statically crystallize at 100°C for 2-8 hours, and then stand at room temperature for 4-6 hours to obtain modified binder II;

[0055] The modified binder I and the modified binder II are mixed in a mass ratio of 0.1-10:1, and the modified binder is obtained after uniform stirring.

[0056] The binder is at least one of silica sol, alumi...

Embodiment 1

[0061] Preparation of modified silica sol: first mix 20g silica sol with 5mL2mol / L zinc nitrate solution under 60℃ water bath and stir for 4h, then let it stand at room temperature for 6h to obtain modified silica sol I; then add 20g silica sol Put it in a crystallization kettle, statically crystallize at 100℃ for 6 hours, and then stand at room temperature for 4 hours to obtain modified silica sol II; finally, the modified silica sol I and modified silica sol II are made at a mass ratio of 1:1 The modified silica sol is obtained after mixing and stirring uniformly.

Embodiment 2

[0063] Preparation of modified aluminum sol: first mix 10g water glass with 8mL2mol / L magnesium nitrate solution under 60℃ water bath and stir for 4h, then let it stand at room temperature for 4h to obtain modified aluminum sol Ⅰ; then add 30g water glass Put it in a crystallization kettle, statically crystallize at 100°C for 4 hours, and then stand at room temperature for 4 hours to obtain modified aluminum sol II; finally, the modified aluminum sol I and modified aluminum sol II are mass ratio 1:3 The modified aluminum sol is obtained after mixing and stirring uniformly.

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Abstract

The invention discloses a catalyst for producing gasoline by methanol conversion and giving consideration to propylene yield and a preparation method thereof. The catalyst comprises an active component, a carrier, a modified binder and a metal oxide, wherein the active component is ZSM-11 molecular sieve, the ZSM-11 molecular sieve has mesopore and micropore cascade pore structure and nanorod splice morphology, the volume ratio of mesopore and micropore is (0.2-3): 1, the grain size is 50-1900nm, the silicon aluminum ratio is 30-300, the modified binder is composed of a modified binder I and a modified binder II in the ratio of 0.1-10:1, the modified binder I is prepared by using a metal modification method, and the modified binder II is prepared by using a static hydrothermal crystallization method. The catalyst prepared by the preparation method can produce gasoline and also give consideration to propylene yield during methanol conversion reaction, realizes the adjustment of gasoline and propylene yield in the methanol conversion reaction, is adapted to market changes in gasoline and propylene, and improve the ability to resist the market risk of the methanol conversion technology.

Description

Technical field [0001] The invention relates to a catalyst for methanol conversion to produce gasoline and a propylene yield and a preparation method thereof, in particular to a catalyst for methanol conversion to produce gasoline with a ZSM-11 molecular sieve active component and a propylene yield and a preparation method thereof. Background technique [0002] The technology of methanol conversion to produce gasoline is a technology that uses methanol as a raw material to produce gasoline with the help of a catalyst. Compared with catalytic cracking gasoline, the gasoline produced by methanol conversion shows good properties. For example, the content of olefins, aromatics, and S are all within the range of clean gasoline, which meets the strict restrictions on S content in the National IV and National V gasoline standards. [0003] The methanol conversion process to produce gasoline is developed on the basis of the conversion of methanol to aromatics on the ZSM-5 molecular sieve c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J29/46C10G3/00C07C11/06C07C1/20
CPCY02P20/52Y02P30/20
Inventor 张强孟晓静李春义刘艳苹于庆君尤廷正
Owner BC P INC CHINA NAT PETROLEUM CORP
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