Method for online soft measurement of ethylene content in co-polypropylene resin

A technology of copolymerizing polypropylene and polypropylene ethylene, which is applied in the field of online soft measurement design of ethylene content in copolymerized polypropylene resin, and can solve problems such as poor practicability, complicated operation, and difficulty in online operation

Inactive Publication Date: 2014-11-12
海宁市盐官工业投资有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing on-line measurement method of ethylene content of copolymerized polypropylene, which are complex in operation, difficult to put into operation online, and poor in practicability, the present invention provides a ethylene content measurement method of copolymerized polypropylene resin with simple design, easy on-line put into operation, and strong practicability. Online Soft Sensing Method

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 soft measurement of ethylene content in co-polypropylene resin
  • Method for online soft measurement of ethylene content in co-polypropylene resin
  • Method for online soft measurement of ethylene content in co-polypropylene resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] refer to Figure 1 ~ Figure 2 , an on-line soft measurement method for ethylene content of a copolymerized polypropylene resin, said method comprising the steps of:

[0048] 1), establish the p-order dynamic mathematical model structure of the ethylene content of the copolymerized polypropylene resin, see formula (1):

[0049] y ( k ) = b 0 + Σ i = 1 p B i ( q - 1 ) u i ( k - d ) + A ...

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 online soft measurement of ethylene content in co-polypropylene resin. The online soft measurement of the ethylene content in the co-polypropylene resin is realized by clicking a button on a configuration interface of an industrial personal computer to start an ethylene content online soft measurement program which is compiled in advance, and combining with a recursive extended least square based on a dynamical mathematic model of ethylene content in a polypropylene full-flow process. The method disclosed by the invention is mostly characterized in that under the continuous production state of a polymerization device, the ratio of propylene concentration and ethylene concentration is measured on line only, so that the online soft measurement of the ethylene content in the co-polypropylene resin can be realized within a quite wide range, the method has the advantages of simplicity, convenience, effectiveness, convenience in implementation, low cost and the like, and can be used for greatly increasing the frequency and efficiency of detecting the critical quality of polypropylene, reducing the discharge of rejected products and increasing the economic benefits and the market competitiveness.

Description

technical field [0001] The invention relates to an online soft measurement design method for the ethylene content of a copolymerized polypropylene resin. Background technique [0002] Copolymerized polypropylene (including random copolymerized polypropylene and impact copolymerized polypropylene) is a general-purpose synthetic resin material polymerized from two or more monomers, and is a high-end brand product among polypropylene resins. In copolymerized polypropylene resin products, ethylene content is a key quality index, which is usually strictly controlled by manual sampling and testing every 12 hours in industrial production. However, in order to improve the quality of copolymerized polypropylene products and the economic benefits of the enterprise, the polymerization unit needs to realize on-line monitoring of product quality, that is, on-line measurement and control of ethylene content. However, as a multi-input and multi-output strongly nonlinear production process...

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): G01N33/44
Inventor 何德峰俞立黄骅
Owner 海宁市盐官工业投资有限公司
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