Catalytic conversion method for preparing lower olefins and aromatics

A technology of low-carbon olefins and aromatics, applied in the field of catalytic conversion, can solve the problems of low yield of propylene and aromatics, underutilization of low-carbon olefins potential content, etc.

Active Publication Date: 2010-06-23
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 61 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above prior art still has deficiencies in the design of alkane molecular cracking reactions. At the same time, the product distribution of the prior art is cut according to the convent

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
  • Catalytic conversion method for preparing lower olefins and aromatics
  • Catalytic conversion method for preparing lower olefins and aromatics
  • Catalytic conversion method for preparing lower olefins and aromatics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0049] The preferred technical solution of this embodiment comprises the following steps:

[0050] (1) The difficult-to-crack raw oil enters the bottom of the first riser reactor and contacts with the thermally regenerated catalytic cracking catalyst. -1 -800h -1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst and raw material is 30-150, and the weight ratio of water vapor and raw material is 0.05-1.0 to carry out the cracking reaction;

[0051] (2) The reaction effluent is not separated from the oil agent, and is mixed with the easily cracked raw material oil. -1 -100h -1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst to raw material is 2-30, and the weight ratio of water vapor to raw material is 0.05-1.0 to carry out the cracking reaction;

[0052] (3) The reaction effluent is mixed with one or more of optional difficult-to-crack raw material oil,...

Embodiment approach 2

[0058] The preferred technical solution of this embodiment comprises the following steps:

[0059] (1) The difficult-to-crack raw oil enters the bottom of the first riser reactor and contacts with the thermally regenerated catalytic cracking catalyst. -1 -800h -1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst and raw material is 30-150, and the weight ratio of water vapor and raw material is 0.05-1.0 to carry out the cracking reaction;

[0060] (2) The reaction effluent is not separated from the oil agent, and is mixed with the easily cracked raw material oil. -1 -100h -1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst to raw material is 2-30, and the weight ratio of water vapor to raw material is 0.05-1.0 to carry out the cracking reaction;

[0061] (3) The reaction effluent is mixed with one or more of optional difficult-to-crack raw material oil,...

Embodiment approach 3

[0067] The preferred technical solution of this embodiment comprises the following steps:

[0068] (1) The difficult-to-crack raw oil enters the bottom of the first riser reactor and contacts with the thermally regenerated catalytic cracking catalyst. -1 -800h -1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst and raw material is 30-150, and the weight ratio of water vapor and raw material is 0.05-1.0 to carry out the cracking reaction;

[0069] (2) The reaction effluent is not separated from the oil agent, and is mixed with the easily cracked raw material oil. -1 -100h1-1 , the reaction pressure is 0.10MPa-1.0MPa (absolute pressure), the weight ratio of catalytic cracking catalyst to raw material is 2-30, and the weight ratio of water vapor to raw material is 0.05-1.0 to carry out the cracking reaction;

[0070] (3) The reaction effluent is mixed with one or more of optional difficult-to-crack raw material oil, ...

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 relates to a catalytic conversion method for preparing lower olefins and aromatics. Raw oil with different cracking performances enters different reaction zones of a first riser reactor to contact with a catalytic cracking catalyst for cracking reaction to separate a spent catalyst from reaction oil gas, wherein the reaction oil gas is separated to obtain a product containing lower olefins, gasoline, distillates with distillation range of 180-250 DEG C and catalytic wax oil, wherein the gasoline is extracted by light aromatics to obtain light aromatics and gasoline raffinate; the raw materials are cracked to be sent into a second riser reactor to contract with a hot regenerated catalyst for catalytic conversion; and the spent catalysts of the two riser reactors are burned and regenerated in the same one regenerator and then returns to the two riser reactors. The method uses heavy raw materials to furthest produce the lower olefins, such as propylene, ethylene, and the like, particularly the propylene, the production rate can exceed 40 wt%, and at the same time the method can coproduce the aromatics, such as toluene, xylene, and the like.

Description

technical field [0001] The invention belongs to the catalytic conversion method of hydrocarbons in the absence of hydrogen, more specifically, it is a method for converting heavy raw materials into low-carbon olefins rich in propylene and ethylene and aromatics rich in toluene and xylene method. Background technique [0002] Low-carbon olefins such as ethylene and propylene are important organic chemical raw materials, among which propylene is a synthetic monomer for products such as polypropylene and acrylonitrile. With the rapid growth of demand for derivatives such as polypropylene, the demand for propylene is also increasing year by year. The demand in the world propylene market has increased from 15.2 million tons 20 years ago to 51.2 million tons in 2000, with an average annual growth rate of 6.3%. It is estimated that the demand for propylene will reach 86 million tons by 2010, with an average annual growth rate of about 5.6%. [0003] The methods for producing pro...

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
IPC IPC(8): C10G11/00C10G11/02C07C15/02C07C11/02
CPCY02P20/584
Inventor 崔守业许友好龚剑洪张执刚马建国程从礼刘守军杨轶男
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