用于管式反应器中醋酸乙烯酯连续乳液共聚的基于超声波和转换的在线污垢测量

Ultrasonic and conversion-based inline fouling measurements for continuous emulsion copolymerisation of vinyl acetate in a tubular reactor.

作者信息

Rust Sören, Osenberg Marco, Musch Thomas, Pauer Werner

机构信息

Institute for Technical and Macromolecular Chemistry, University of Hamburg, Bundesstraße 45, 20146, Hamburg, Germany.

Chair of Electronic Circuits, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany.

出版信息

Sci Rep. 2024 Feb 19;14(1):4077. doi: 10.1038/s41598-024-54321-4.

DOI:10.1038/s41598-024-54321-4

PMID:38374142

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10876618/

Abstract

One of the serious challenges for the implementation of continuous emulsion polymerisation is their significant fouling. The elucidation of time-dependent fouling processes and the development of inline analysis methods for fouling mass quantification are crucial to making progress in this area. Inline-sensor concepts based on ultrasonic measurements as well as residence time and conversion analysis were investigated regarding their suitability for the detection of time-dependent fouling formation and compared with gravimetrical results in order to validate their precision. Both a set-up using a turnover analysis for determination of losses in reaction volume by fouling and an ultrasound-based measurement system detecting deposit-caused changes by evaluating the average sound velocity could be used as suitable sensor concepts. The accuracies of both sensors are below 10% deviation to fouling references.

摘要

连续乳液聚合实施过程中的一个严峻挑战是其严重的结垢问题。阐明随时间变化的结垢过程以及开发用于结垢质量定量的在线分析方法对于该领域的进展至关重要。研究了基于超声测量以及停留时间和转化率分析的在线传感器概念在检测随时间变化的结垢形成方面的适用性，并与重量分析结果进行比较以验证其精度。一种通过周转分析确定因结垢导致的反应体积损失的装置以及一种基于超声的测量系统（通过评估平均声速检测由沉积物引起的变化）都可以用作合适的传感器概念。两种传感器的精度与结垢参考值的偏差均低于10%。