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

Method for online analysis of water content of solid master batch recovery system in aromatic acid production

The technology of a recovery system and an analysis method is applied in the field of on-line moisture analysis of the mother solid material recovery system in the production of aromatic acids, which can solve the problems of inability to realize automatic operation of the device, complex water quality components, and high labor intensity, and achieve reliable moisture measurement results, Short response time and reproducible results

Inactive Publication Date: 2012-09-19
NANJING TECH UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides an on-line analysis method for moisture in the recovery system of the parent solid material in the production of aromatic acids, which mainly solves the problem that the water quality components in the recovery system of the recovery system of the parent solid material in the production of aromatic acids are relatively complex, and the moisture content can only be analyzed offline by sampling, which is complicated to operate. The labor intensity is high, the analysis time is long, and the automatic operation of the device cannot be realized

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 online analysis of water content of solid master batch recovery system in aromatic acid production
  • Method for online analysis of water content of solid master batch recovery system in aromatic acid production
  • Method for online analysis of water content of solid master batch recovery system in aromatic acid production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0039] Establishment of moisture content BP neural network model:

[0040]Feed-forward neural network (BP model) is the most researched and most used network model in the field of neural network. Its nonlinear approximation capabilities are the main reason for its popularity. But the BP algorithm also has some defects, mainly the uncertainty of its training process. The specific performance is: for some complex problems, because the learning rate is too small, the BP algorithm may need to be trained for several hours or even longer. Many people have proposed many improved algorithms for the shortcomings of the gradient descent method, such as the second-order fast BP algorithm, the momentum factor method, and the action function adjustment method. Compared with the gradient descent method, these improved methods have significantly improved convergence spe...

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 discloses a method for the online analysis of the water content of a solid master batch recovery system in aromatic acid production, which comprises: firstly, normalizing the parameters, such as temperature, metal ion concentration and conductivity, influencing water content analysis; secondly, calculating the soft measurement value of the water content by using a neural network model; and finally, performing real-time deduction control of the water content according to the soft measurement value. The method is used for performing the online analysis of the water content of a solid master batch circulating oxidization and recovery system in aromatic acid production and mainly solves the problem that the water components of the conventional solid master batch circulating oxidization and recovery system in aromatic acid production is so complex that the water content can be measured by sample off-line analysis which leads to complex operation, high labor intensity, long analysis time and unavailable automatic operation of the device. The method for the online analysis of the water content of the solid master batch recovery system in aromatic acid production has the advantages of simple operation, high stability, short response time, high repeatability and the like and can measure the water content of solution of complex components continuously on line in real time.

Description

Technical field: [0001] The invention relates to a method for applying the principle of electrical conductivity to online analysis of moisture content, and a modeling technology for realizing online analysis of moisture through a neural network, in particular to an online analysis method for moisture in a master solid material recovery system in aromatic acid production. Background technique: [0002] Purified terephthalic acid (PTA) is an important raw material for the production of polyester chips, films, coatings and engineering plastics. It is produced by high-temperature oxidation of p-xylene to produce crude terephthalic acid, which is then refined by hydrogenation. The oxidation process of p-xylene is a process in which the methyl group on the aromatic hydrocarbon is finally transformed into a carboxyl group through a series of oxidation reactions. It is a series of reactions. The simplified reaction path is as follows: [0003] [0004] In the purified terephthali...

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): G05D27/02G01N27/04G06N3/08
Inventor 管国锋万辉佟丽
Owner NANJING TECH UNIV
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