一种用于双螺杆脱挥挤压造粒机组在线脱挥系统及方法
By using a co-rotating twin-screw extruder with an aspect ratio of not less than 40 and an intelligent control system in the twin-screw extrusion granulation unit, efficient and stable solvent removal of polyolefin materials is achieved, solving the problems of large equipment investment, high energy consumption and unstable control in traditional processes, and improving production efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN ADVANCE TECH CO LTD
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
In the production of high-end polyolefin materials, the traditional devolatilization process is characterized by long process flow, large equipment investment, high energy consumption, and difficulty in achieving efficient and stable solvent removal. In particular, it is difficult to meet the stringent requirements at extremely low solvent content stages, and the multi-stage devolatilization control is unstable.
The co-rotating twin-screw extruder with a length-to-diameter ratio of not less than 40 is used. It is divided into three devolatilization zones: primary, secondary, and tertiary. The intelligent control system adjusts the temperature, vacuum valve opening, and stripping medium flow rate in real time. Synchronous independent control and online adaptive adjustment of each zone are achieved through mass transfer impedance curves and inverse configuration models.
It has achieved stable control of solvent residue below 150ppm under high production capacity, improving production stability and flexible production efficiency, and solving the problems of lag and overflow in multi-level coupled control.
Smart Images
Figure CN122143234B_ABST