Catalyst for preparing olefins with same carbon atom number by dehydrogenizing alkane mixtures of C4 and above, and preparation method and application thereof

A kind of alkane mixture and catalyst technology, which is applied in the direction of physical/chemical process catalysts, hydrocarbons, hydrocarbons, etc., can solve the problems of high difficulty and weak conversion ability of heavy oil, so as to save energy, avoid strong endothermic process, and promote The effect of industrial application

Active Publication Date: 2011-11-23
CHINA PETROLEUM & CHEM CORP +1
View PDF16 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active component of catalytic cracking catalyst is mainly Y molecular sieve with large pores, and the macromolecular hydrocarbons of the reaction raw materials are easy to diffuse into the pores for reaction, so its heavy oil conversion ability is strong; catalytic cracking catalysts generally use pores with strong shape selectivity Smaller ZSM-5 molecular sieves are used as active components, and it is more difficult for the macromolecular hydrocarbons of the reaction raw materials to diffuse into the pores, so its ability to convert heavy oil is weak

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for preparing olefins with same carbon atom number by dehydrogenizing alkane mixtures of C4 and above, and preparation method and application thereof
  • Catalyst for preparing olefins with same carbon atom number by dehydrogenizing alkane mixtures of C4 and above, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Take 6g of alumina powder (Jiangyan Auxiliary Factory, γ-type) and 14g of HMCM-41 molecular sieve (Nankai University Catalyst Factory) after molding and roasting (the weight ratio is 3:7), impregnated in 0.2mol / L NaNO 3 In 44ml of aqueous solution, take it out and dry it at 120°C for 2 hours and bake it at 500°C for 2 hours; then dip it into the hydrochloric acid solution in which chloroplatinic acid is dissolved, the impregnation solution is 55ml of a solution with a concentration of 0.0074gPt / L, take it out and dry it at 120°C , 450 ° C air treatment for 2 hours; then soaked in 0.1mol / LBa (NO 3 ) 2 In 30ml of hydrochloric acid solution, take it out, dry it at 120°C for 2 hours and bake it at 500°C for 2 hours; obtain catalyst E.

Embodiment 2

[0052] Take 6g of alumina powder (Jiangyan Auxiliary Factory, γ-type) and 14g of Hβ molecular sieve (Nankai University Catalyst Factory) after molding and roasting (weight ratio is 3:7), impregnated in 0.1mol / L NaNO 3 In 44ml of aqueous solution, take it out and dry it at 120°C for 2 hours and bake it at 500°C for 2 hours; then immerse it in the hydrochloric acid solution in which chloroplatinic acid is dissolved. Dry for 2 hours, 450 ℃ air treatment for 2 hours; then impregnated in 0.05mol / L Ba(NO 3 ) 2 44ml of hydrochloric acid solution, took it out, dried it at 120°C for 2 hours and calcined at 500°C for 2 hours; Catalyst F was obtained.

Embodiment 3

[0054] Take 6g of alumina powder (Jiangyan Auxiliary Factory, γ-type) and 14g of HY molecular sieve (Nankai University Catalyst Factory) after molding and roasting (weight ratio is 3:7), impregnated in 0.1mol / L NaNO 3 In 44ml of aqueous solution, take it out and dry it at 120°C for 2 hours and bake it at 500°C for 2 hours; then immerse it in the hydrochloric acid solution in which chloroplatinic acid is dissolved. Dry for 2 hours, 450 ℃ air treatment for 2 hours; then impregnated in 0.1mol / L Ba(NO 3 ) 2 37ml of hydrochloric acid solution, after taking it out, it was dried at 120°C for 2 hours and calcined at 500°C for 2 hours; Catalyst G was obtained.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a catalyst for preparing olefins with the same carbon atom number by dehydrogenizing alkane mixtures of C4 and above, and a preparation method and application thereof. The catalyst comprises the following components: a) 0.01 to 5 percent of platinum, b) 0.05 to 5 percent of alkali metal, c) 1 to 20 percent of at least one of alkaline-earth metal and / or rare-earth metal, d)40 to 75 percent of at least one of molecular sieves with the diameters of more than 6A and regular channel structures, and e) an adhesive, wherein the weight ratio of the molecular sieve to the adhesive is 0.5:1-5:1. The catalyst is prepared by a method comprising the steps of impregnating, molding and roasting. In the catalyst, the porous molecular sieve with a regular channel structure is usedas a carrier, so that the selectivity of the catalyst is improved and the service life of the catalyst can be prolonged; and the catalyst is applied to the preparation of low-carbon olefins by dehydrogenizing petroleum saturated hydrocarbons, and can reduce energy consumption and save the cost.

Description

technical field [0001] The present invention relates to the field of petrochemical industry, and furthermore, relates to a catalyst, preparation method and application for dehydrogenating alkane mixture with carbon four or more to prepare olefins with the same carbon number. Background technique [0002] At present, the most common method of producing light olefins such as ethylene, propylene and butadiene from petroleum saturated hydrocarbons is steam cracking. About 99% of the world's ethylene and more than 50% of the propylene are produced by this method. Since the production of steam cracking method is currently operated under very harsh conditions, for example, the final temperature of the furnace tube in the radiant section of the cracking furnace reaches or exceeds 1125°C, and the residence time of materials in the furnace tube in the radiant section is shortened to 0.2s or even shorter. Under the current technical level, the possibility of improving the production o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/068C07C5/333
Inventor 郝雪松白杰陈硕刘小波郭敬杭王国清
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap