Articles covered in this issue:
Case study: Rotordynamic instabilities during shop testing of a large centrifugal compressor train
Neetin Ghaisas, Steven Hallt, Fluor
This paper details the problem of a compressor experiencing excessive vibrations during testing and how a lasting solution was found. A structured fault diagnosis methodology
was used to minimize the time and effort being focused on issues that were not directly attributable to the problem.
Benefits of converting batch to continuous processes
Dr. Dimitrios Gerogiorgis, University of Edinburgh
In stark contrast to most chemical process industries, where continuous manufacturing
is the perennial standard, the pharmaceutical industry has traditionally relied on batch
processing for producing innovative products of extreme added value and societal importance. This article discusses continuous pharmaceutical manufacturing as a viable option to streamline product development and simultaneously improve process economics.
New impellers for stirred tank reactors: a brief review from the recent literature
Gunwant M. Mule, Amol A. Kulkarni, NCL
Continuous efforts are on to improve the performance of the stirred tank reactors in terms of mixing time, power consumption, gas dispersion and solid suspension. This article reviews some of the new impeller designs which address specific issues related to a range of mixing situations.
Swivel-angle tank mixers provide a solution in the crude oil tank farm
Chris Hastings, Philadelphia Mixing Solutions
The petroleum industry has to deal with the inherent problem of presence of basic sediment and water. If not addressed, it could lead to corrosion, causing serious damage to the floating roof. Swivel-angle side-entry tank mixer provides the most economical option to prevent this problem.
Reactor Maintenance Tips
Raghava Chari, Industry Consultant
A reactor is the heart of a chemical process plant. Reactors operate at pressures as high as 350 bars and temp of 150 ˚C and of different materials of construction to suit the process conditions. This paper presents two case studies of innovative repairs done on a urea reactor that averted months of plant outages.
