Fluidized bed drying of water soluble polymer

Loading...
Thumbnail Image

URL

Journal Title

Journal ISSN

Volume Title

Kemian tekniikan korkeakoulu | Master's thesis

Date

2019-05-07

Department

Major/Subject

Chemical and Process Engineering

Mcode

CHEM3043

Degree programme

Master's Programme in Chemical, Biochemical and Materials Engineering

Language

en

Pages

97+48

Series

Abstract

The objective of this thesis was to study the effect of various operating parameters on the fluidized bed drying of water-soluble polyacrylamide-gel (PAM-gel). The elucidated information about PAM-gel, synthesis, and drying of PAM and application of dry-polyacrylamide (DPAM) is in the introductory part. Conventional fluid bed dryers (FBDs) and alternative technology in fluidized bed drying are also discussed in the later sections. This study focuses on the effect of varying operating parameters on the fluidized bed drying of PAM-gel. It was necessary to determine the equilibrium moisture content (EMC) for DPAM to examine the effect of operating parameters on the drying process. Moreover, the analysis was based on data obtained from the in-built data logger of lab-scale batch fluidized bed drying equipment. Various operating parameters such as residence time, airflow, feed particle size, bed load, and inlet temperature were studied by analyzing the difference between moisture content and particle size distribution before and after the drying process. The analysis confirmed that neither cutting oil nor particle size had any effect on EMC, as expected. Furthermore, examination of operating parameters displayed some operating parameters exhibit direct and some effect indirectly the drying process of PAM-gel in FBDs.

Description

Supervisor

Alopaeus, Ville

Thesis advisor

Laakkonen, Marko
Zhao, Wenli

Keywords

equilibrium moisture content (EMC), fluidized bed dryers (FBDs), polyacrylamide-gel (PAM-gel), dry-polyacrylamide (DPAM)

Other note

Citation