Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing tert-butanol by extraction of carbon 4 hydrocarbon containing isobutene

A carbon tetrahydrocarbon and tert-butanol technology, applied in the field of continuous production of tert-butanol, can solve the problems of high energy consumption, reduced equipment utilization rate, etc., and achieves the advantages of reducing energy consumption, improving conversion rate and selectivity, and saving equipment investment costs Effect

Active Publication Date: 2009-05-06
PETROCHINA CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydration reaction of isobutene is a liquid phase reaction. A large amount of gas phase produced in the reactive distillation reduces the utilization rate of the equipment. The rectification process is a process of continuous vaporization and continuous condensation. Removal of heat from the agent is a high-energy-consuming operation

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
  • Method for preparing tert-butanol by extraction of carbon 4 hydrocarbon containing isobutene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] exist In the 100×11000mm reactive extraction tower, it is loaded in four sections in bulk 5×5mm cylindrical cation exchange resin catalyst, the total height of the catalyst is 10 meters, and the loading capacity of the catalyst is 70L. The specific surface area of ​​the catalyst is 42m 2 / g, the exchange equivalent is 4.3mmol / g (dry basis), the porosity of the catalyst bed is 50%, and the top of the catalyst bed is filled 6×6mm porcelain Raschig ring 0.5m. At a pressure of 2.0MPa, a reaction temperature of 85°C, water / C 4 = 4(v / v), C 4 The isobutene concentration in the medium is 38.35wt%, C 4 At a flow rate of 0.4mm / s, C 4 The isobutene in the process is operated through continuous reaction extraction, the conversion rate of isobutene is 94.2%, the selectivity is 100%, and the C 4 Does not contain TBA.

Embodiment 2

[0025] Composition with the same raw material of embodiment 1, in the reactive extraction tower among the embodiment 1, the catalyzer and the ceramic Raschig ring filler of packing same same amount, at pressure 2.0MPa, under 85 ℃ of temperature, C 4 At a flow rate of 0.5mm / s, C 4 Continuously carry out reactive extraction operation with water in the tower, when water / C 4 =8(v / v), C 4 The conversion rate of isobutene in the medium can reach 95.0%, and the selectivity is 100%; when water / C 4 =10(v / v), C 4 The conversion rate of isobutene can reach 99.4%, and the selectivity is 100%.

Embodiment 3

[0027] Adopt temperature of reaction in embodiment 1, pressure, water / C 4 (v / v) ratio and containing isobutene are 18.72wt% C4 hydrocarbons as raw material, in In the reactive extraction tower of 32 * 8000mm, the catalyst 6L identical with embodiment 1 is charged in 4 sections, in C 4 When the flow rate is 0.45mm / s, the continuous reaction extraction, the conversion rate of isobutene reaches 90.21%, and the selectivity is 100%.

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

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for continuously producing tertiary butyl alcohol by C4 hydrocarbon containing isobutene through a hydration reaction and extraction action in the presence of a cation exchange resin catalyst. The method is characterized in that a reactor and an extracting tower are combined in a device, the functions of the hydration reaction and the extraction separation are synchronously realized in the device, and the tertiary butyl alcohol generated by the reaction is extracted by water in time, thereby breaking through the limit of chemical equilibrium, improving the conversion rate and the selectivity of the isobutene, simplifying the flow, saving the investment cost for the device, also realizing heat integration, and greatly reducing the energy consumption in the production.

Description

technical field [0001] The invention relates to a method for preparing tert-butanol by reactive extraction of isobutene-containing C4 hydrocarbons, in particular to a method for continuously producing tertiary-butanol through reactive extraction with water in the presence of a cationic exchange resin catalyst. Background technique [0002] The C4 hydrocarbon fraction is a by-product of the ethylene unit and the catalytic cracking unit. Except for the butadiene in the cracked C4 hydrocarbon which is extracted as a chemical monomer, the chemical utilization rate of the remaining C4 hydrocarbon components is not high and is often used burnt as fuel. Tert-butyl alcohol (TBA) is an important chemical raw material, which can be used in paints and solvents to produce tert-butylphenol. Two-step oxidation and esterification of TBA can produce methyl methacrylate (MMA), which is an important plexiglass monomer and is widely used in the fields of automobiles, lighting, building materi...

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): C07C31/12C07C29/04B01J31/08
Inventor 李吉春林泰明李长明王小强董炳利王玫苟文甲孙世林程中克张慧刘飞杨利斌黄剑锋宋帮勇
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com