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

Gas-liquid stirring reactor for synthesizing acrylic acid and ester through acetylene carbonylation method

A gas-liquid stirring and carbonylation technology, which is applied in the fields of carbon monoxide or formate reaction preparation, chemical/physical/physical-chemical stationary reactors, and chemical methods for reacting liquid and gaseous media, etc., and can solve engineering scale-up applications. Restrictions, poor gas-liquid distribution, large equipment investment, etc., to achieve the effect of improved gas-liquid mass transfer, good fluid mixing effect, and uniform distribution

Active Publication Date: 2015-05-20
PUJING CHEM IND SHA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tube-and-tube reactor has problems such as large reaction volume, large equipment investment, and poor gas-liquid phase distribution. Especially, the engineering scale-up application of the acetylene carbonylation method for the synthesis of acrylic acid and esters under pressure will be limited to a certain extent.

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
  • Gas-liquid stirring reactor for synthesizing acrylic acid and ester through acetylene carbonylation method
  • Gas-liquid stirring reactor for synthesizing acrylic acid and ester through acetylene carbonylation method
  • Gas-liquid stirring reactor for synthesizing acrylic acid and ester through acetylene carbonylation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a gas-liquid stirring reactor for synthesizing acrylic acid and esters by acetylene carbonylation, the reactor includes: kettle body 1, stirring shaft 2, axial flow stirring paddle 3, radial flow stirring paddle 4, gas distributor 5, baffle Plate 6, guide tube 7, the kettle body 1 has a steam heating jacket, the middle of the kettle body 1 is cylindrical, its top and bottom are ellipsoidal, and the side wall of the kettle body 1 is with The steam heating jacket side wall has a jacket steam inlet 13 on the upper part, a jacket steam outlet 14 on the lower part, and a waste liquid discharge port 12 on the bottom of the kettle body 1 . The side wall of the kettle body 1 is provided with a liquid inlet 8, a liquid outlet 10 and a gas outlet 11, and the bottom of the kettle body 1 is provided with a gas inlet 9, which is connected to the gas distributor 5, and the gas distributor 5 It is an annular pipe with evenly distributed openings or a diverg...

Embodiment 2

[0034] Using the present invention as figure 1 The reactor structure shown, the material of the reactor is high pressure resistant, high temperature and anti-corrosion stainless steel material, the kettle body has a steam heating jacket, the diameter of the reactor body T=300mm, the total height H=2.3×T=700mm, The bottom of the kettle and the top of the kettle are also elliptical, with a height of H3=0.3×T=90mm, a volume of about 45L, a liquid level of H4=1.5×T=450mm, and a volume of about 30L; a double-layer is installed on a vertical stirring shaft in the center of the kettle. Stirring paddle, the upper end of the stirring shaft protrudes out of the top cover of the reactor through sealing measures to connect with the power unit, and the lower end is fixed through the groove in the center of the bottom of the reactor. 0.45×T=135mm, the distance C2 from the liquid surface is 0.5×T=150mm, the paddle type of the axial flow stirring paddle in the lower layer is a four-blade 45° ...

Embodiment 3

[0037] Using the present invention as figure 1 The reactor structure shown, the material of the reactor is high pressure resistant, high temperature and anti-corrosion stainless steel material, the kettle body has a steam heating jacket, the diameter of the reactor body T=400mm, the total height H=2.5×T=1000mm, The bottom of the kettle and the top of the kettle are also oval, with a height of H3=0.3×T=120mm, a volume of about 120L, a liquid level of H4=1.5×T=600mm, and a volume of about 70L; a double-layer is installed on a vertical stirring shaft in the center of the kettle. Stirring paddle, the upper end of the stirring shaft protrudes out of the top cover of the reactor through sealing measures to connect with the power unit, and the lower end is fixed through the groove in the center of the bottom of the reactor. 0.45×T=180mm, the distance C2 from the liquid surface is 0.55×T=220mm, the paddle type of the axial flow stirring paddle in the lower layer is a four-blade 45° ob...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a gas-liquid stirring reactor for synthesizing acrylic acid and ester through an acetylene carbonylation method. According to the gas-liquid stirring reactor, a reaction kettle with a steam heating jacket is adopted, the inner side of the kettle wall is provided with a baffle, an upper entering type stirring shaft is adopted, double layers of stirring paddles are adopted, the upper layer blade is a run-off type blade, the lower layer blade is an axial flow type blade and is arranged inside a diversion cylinder, and a porous gas distributor is arranged between the axial flow stirring paddle and the bottom of the stirring kettle. Compared with the gas-liquid stirring reactor in the prior art, the gas-liquid stirring reactor of the present invention has the following characteristics that: radial flow formation on the upper end blade zone is achieved, and regular and rapid axial flow formation on the lower end blade zone is achieved, such that bubbles in the radial flow zone are well dispersed into the lower segment kettle under a fluid drag force effect, and a flow type structure is formed through combination of the baffle so as to substantially improve effects of mixing and heat transfer, uniformly beak the bubbles, uniformly disperse the bubbles and effectively increase a gas-liquid mass transfer performance, wherein the flow type structure is that: two small axial flow circulations are nested inside the whole kettle large axial flow circulation. In addition, the gas-liquid stirring reactor is further suitable for other atmospheric or pressurized gas-liquid reactions.

Description

technical field [0001] The invention relates to a chemical reactor, in particular to a stirred-tank reaction in which gas-phase carbon monoxide, acetylene and water or alcohol dissolved in the liquid phase are reacted in the gas-liquid phase to synthesize acrylic acid and esters in the presence of a homogeneous catalyst. device. Background technique [0002] Most of the reactions of synthesizing acrylic acid and esters by carbon monoxide in the gas phase, dissolving acetylene in the liquid phase, water or alcohol and the presence of catalysts in the acetylene carbonylation method use tubular reactors. Such as US3023237, JP4235951.1992, etc. have used shell and tube reactors to synthesize acrylic acid. Since the acetylene carbonylation reaction is a fast reaction, the heat of reaction is large, and the reaction selectivity is significantly affected by temperature, so rapid and uniform mixing, bubble breaking, and good dispersion are required to improve heat transfer and mass...

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): B01J19/18B01J10/00C07C69/54C07C67/38
CPCY02P20/582
Inventor 庄庆龙
Owner PUJING CHEM IND SHA
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