Gas phase polyethylene device quality index and operational constraint on-line estimation system and method thereof

• Main Authors: ZHAO ZHONG, SUN KANG
• Format: Patent
• Language: Chinese; English
• Published: 17.10.2012
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a polyethylene (PE) multi-trademark product quality index and operational constraint on-line estimation system for gas phase fluidized bed production technology. The system comprises a field process instrument which is connected with a gas phase PE object, a field analysis instrument, a distributed control system (DCS), a laboratory analysis data server and an advanced control server. The advanced control server includes an OPC client, a data interface module, a multi-trademark PE production process quality indicator and operational constraint model prediction module, a PE quality index prediction model parameter adaptive correction module, and a PE quality index robustness suboptimal filter estimation and quality indicator and operational constraint display module. The invention also provides a gas phase PE quality index and operational constraint on-line estimation method. The invention provides the real-time online estimation system and method of multi-trademark gas phase PE product