Method for in-line continuous detection of polymerization rate for polymerizing reaction of vinyl acetate

A vinyl acetate, polymerization technology, applied in the direction of analytical materials, instruments, etc., can solve the problems of high cost and time lag, and achieve the effect of low price, small lag time, stable and reliable performance

Inactive Publication Date: 2004-10-06
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are very few manufacturers to infer the polymerization rate of the polymerization reaction through material balance calculation according to the feed and the flow rate of different generated materials. Higher requirements, which are usually difficult to achieve, or

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 in-line continuous detection of polymerization rate for polymerizing reaction of vinyl acetate
  • Method for in-line continuous detection of polymerization rate for polymerizing reaction of vinyl acetate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] The following describes in detail how to implement the present invention through an application example.

[0035] The process parameters and other parameters are as follows: methanol ratio S is 15-20%; the polymerization rate varies from 50% to 60%; the temperature of the material in the polymerization vessel varies from 55°C to 70°C; the ambient temperature varies from -20°C To 45°C.

[0036] System configuration and installation such as figure 1 . The distance between the two pressure measuring points is 1300 mm, and the bottom pressure measuring point is 200 mm along the line from the cylindrical lower end of the polymerizer. The differential pressure signal is measured by a double-flange differential pressure transmitter, and the ambient temperature and material temperature are measured by the ambient temperature transmitter and the material temperature transmitter respectively. The above measured differential pressure signal, ambient temperature signal, material temper...

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

A method for in-line continuous detection of polymerizing rate in the polymerizing reaction of vinyl acetate incldues measuring pressure difference signal by two pressure-measuring points on the polymerizing reactor, measuring the temp. of material in the reactor, and measuring the ambient temp., and calculating the polymerizing rate according to the said three signals and the methanol ratio. Its advantage is high precision.

Description

Technical field: [0001] The invention relates to an on-line continuous detection method for the polymerization rate of vinyl acetate polymerization, which is used for parameter detection in process industries such as chemical industry, macromolecule and plastics. Background technique: [0002] Industrial process automation is the basic condition and important guarantee for safe, stable, high-efficiency, high-quality and low-consumption production. In order to effectively control the production process, an important prerequisite is to obtain information about the controlled variables. For the specific production process, most of the process parameters that really want to be controlled are concentration, density, polymerization rate, yield, naphtha dry point, light oil pour point, yield distribution, etc., which directly reflect the condition of the device and the quality of the product. "Quality parameters". However, the detection of these quality parameters is very difficul...

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): G01N35/00
Inventor 王豪
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap