Check patentability & draft patents in minutes with Patsnap Eureka AI!

Production increasing method for propylene

A technology of propylene and products, which is applied in the direction of ethylene production, bulk chemical production, and hydrocarbon production from oxygen-containing organic compounds. It can solve the problems of low selectivity and low propylene yield, and achieve the reduction of secondary reactions and radial distribution Homogeneous, less agglomerated effect

Active Publication Date: 2010-08-18
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that there are low yield and low selectivity of the target product propylene in the prior literature and technology, and a new method for increasing the production of propylene is provided

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
  • Production increasing method for propylene
  • Production increasing method for propylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The reaction is carried out in a gas-solid co-current downflow fluidized bed reactor, the feed is methanol, the catalyst is SAPO-34, the temperature of reactor A is 470°C, the pressure is 0.1MPa, the residence time is 5 seconds, and the ratio of catalyst to raw material is 4. The carbon four and above components in the reaction product of reactor A enter into reactor B, wherein the temperature of reactor B is 510°C, the pressure is 0.1MPa, the residence time is 8 seconds, the weight ratio of catalyst to hydrocarbon is 5, and the regenerator temperature is It is 530°C. The conversion rate of methanol was 99.8%. Among the hydrocarbon products, ethylene accounted for 52% and propylene accounted for 31%.

Embodiment 2

[0020] The reaction is carried out in a gas-solid co-current downflow fluidized bed reactor, the feed is methanol, the catalyst is SAPO-34, the temperature of reactor A is 450°C, the pressure is 0.02MPa, the residence time is 3 seconds, and the ratio of catalyst to raw material is 5. The carbon four and above components in the reaction product of reactor A enter into reactor B, wherein the temperature of reactor B is 560°C, the pressure is 0.2MPa, the residence time is 5 seconds, the weight ratio of catalyst to hydrocarbon is 1, and the regenerator The temperature is 580°C. The methanol conversion rate was 100%, and among the hydrocarbon products, ethylene accounted for 49% and propylene accounted for 36%.

Embodiment 3

[0022]The reaction is carried out in a gas-solid co-current downflow fluidized bed reactor, the feed is dimethyl ether, the catalyst is SAPO-34, the temperature of reactor A is 560 ° C, the pressure is 0.5 MPa, and the residence time is 15 seconds. The catalyst and raw materials The ratio is 26, and the carbon four and above components in the reaction product of reactor A enter into reactor B, wherein the temperature of reactor B is 620°C, the pressure is 0.4MPa, the residence time is 20 seconds, and the weight ratio of catalyst to hydrocarbon is 0.6, The regenerator temperature was 550°C. The conversion rate of dimethyl ether was 100%. Among the hydrocarbon products, ethylene accounted for 47% and propylene accounted for 28%.

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 present invention relates to one kind of propylene producing process with high propylene selectivity and high propylene yield. The production process includes the following steps: 1. reaction of oxygen compound material in reactor A through contacting with catalyst I to produce effluent I containing ethylene, propylene and C4 and C4+ hydrocarbons; and separating the effluent I in a separatingunit to obtain C4 and C4+ effluent II, ethylene product and propylene product; 2. reaction of the effluent II in reactor B through contacting with catalyst II to produce effluent III containing ethylene, propylene and C4 and C4+ hydrocarbons; and separating the effluent III in a separating unit to obtain C4 and C4+ effluent IV, ethylene product and propylene product; and 3. returning the effluentIII to reactor B. The production process may be applied in industrial production.

Description

technical field [0001] The invention relates to a method for increasing the production of propylene, in particular to a method for increasing the production of propylene by using a down-flow fluidized bed to catalyze the reaction of methanol or dimethyl ether and combining butene catalytic cracking technology. Background technique [0002] Petrochemical industry is an important pillar industry in the national economy. It provides a large amount of chemical raw materials for industry, agriculture, transportation and national defense. It is one of the most relevant and leading industrial sectors in the national economy. Propylene and ethylene are the two most important basic raw materials for modern petrochemical industry. [0003] Propylene is mainly used to produce polypropylene, cumene, carbonyl alcohol, acrylonitrile, propylene oxide, acrylic acid, isopropanol, etc. Among them, polypropylene accounts for more than half of the world's propylene demand. At present, 67% of t...

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 Patents(China)
IPC IPC(8): C07C1/20C07C11/04C07C11/06
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 刘俊涛钟思青齐国祯王华文
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com