Supercharge Your Innovation With Domain-Expert AI Agents!

Bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow

A technology of reactor and bubble column, which is applied in the field of liquid-phase catalytic oxidation of aromatic compounds, and can solve problems such as expensive

Active Publication Date: 2009-09-02
GRUPO PETROTEMEX SA
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While effective, such traditional purification methods can be very expensive

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
  • Bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow
  • Bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow
  • Bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0346] Example 1 is a calculated example of a bubble column oxidation reactor for the oxidation of para-xylene in the liquid phase of a three-phase reaction medium. The bubble column reactor of Example 1 represents a proven commercial design with a para-xylene feed rate of 7000 kg per hour. Examples 2 to 10 are calculation examples of bubble column oxidation reactors whose operating capacity is 7 times larger than that of the reactor in Example 1. Figure 58 Tables are provided for the various parameters of the modified bubble column oxidation reactors in Examples 1-10.

[0347] Example 1

[0348] This example utilizes a bubble column reaction vessel having a vertical, cylindrical section with an inner diameter equal to 2.44 m. The height of the cylindrical section is 32 m from the lower tangent (TL) to the upper TL of the cylindrical section. The vessel is fitted with 2:1 oval heads at the top and bottom of the cylindrical segment. The height from the bottom of the reacti...

Embodiment 2

[0354] In this example, the bubble column reactor was fed with para-xylene at an increased rate of 49000 kg per hour - 7 times the rate in Example 1. The superficial gas velocity (often considered an important scaling variable for bubble columns) was kept approximately equal to Example 1 by increasing the cross-sectional area of ​​the reaction vessel to about 7 times that in Example 1. The H:W and L:D ratios (often considered important scaling variables for bubble columns) were also kept approximately equal to Example 1.

[0355] The other feed streams were increased by the same ratio of 7:1 for Example 1. The feed composition was the same as in Example 1, and the same concentrations of water, cobalt, bromine and manganese as in Example 1 were provided within the liquid phase of the reaction medium. The operating pressure of the reaction vessel overhead gas was also 0.52 MPa gauge, and the operating temperature near the middle height of the reaction medium was also about 160°...

Embodiment 3

[0361]This example scales up the method of Example 1 using superficial velocities and space-time reaction strengths. This results in poor product quality, in short, because the natural convection mode inherently produces a poor reaction profile vertically.

[0362] In this example, the para-xylene feed rate was also 49000 kg per hour - 7 times the feed rate in Example 1. The superficial gas velocity also remains approximately equal to Example 1, but the L:D and H:W ratios do not remain equal. Instead, STR remained approximately equal to Example 1. This provides approximately equal values ​​for column bottoms pressure and acetic acid decomposition ratio of Example 1. The other feed streams were increased by the same ratio of 7:1 for Example 1. The feed composition was the same as in Example 1, and the same concentrations of water, cobalt, bromine and manganese as in Example 1 were provided within the liquid phase of the reaction medium. The operating pressure of the reactor...

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
lengthaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow. Disclosed is an optimized process and apparatus for more efficiently and eThe present invention relates to a bubble column reactor mainly used for reactions of liquid-phase flow and vapor-phase flow. Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at reconomically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by morlatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.e economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

Description

[0001] This application is a divisional application of the invention patent application with the application number 200580029538.4 (PCT / US2005 / 030547) and the application date of August 29, 2005. technical field [0002] The present invention generally relates to a process for the liquid phase catalytic oxidation of aromatic compounds. One aspect of the present invention relates to the partial oxidation of a dialkylaromatic compound (e.g., p-xylene) to produce a crude aromatic dicarboxylic acid (e.g., crude terephthalic acid), which can then be for purification and isolation. Another aspect of the invention relates to an improved bubble column reactor that provides a more efficient and economical liquid phase oxidation process. Background technique [0003] Liquid phase oxidation reactions are employed in various existing commercial processes. For example, liquid phase oxidation is currently frequently used for the oxidation of aldehydes to acids (eg, propionaldehyde to pr...

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): B01J19/24C07B33/00C07C51/265
Inventor M·德弗里德A·G·万德斯林鑫
Owner GRUPO PETROTEMEX SA
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