This white paper discusses highly acidic chemical process slurries and the use of continuous vacuum filtration technologies for filtration, cake washing and drying.
First, the basics and benefits of continuous vacuum filtration technologies are reviewed followed by case-studies. In this first process, the precipitated solids are in sulfuric acid slurry. The challenge is to process 2200 kg/hour of dry solids for filtration, counter-current washing and drying in a contained environment.
In this second process, the objective is to process precipitated solids in an hydrochloric acid slurry. The white paper concludes with a framework for vacuum technology selection and how this can be applied to other toxic and difficult chemical process filtrations.10/18/2016
Guided wave radar (GWR) technology has been used successfully in industrial applications for over a decade. But not all applications are created equal. There are many factors that determine whether a GWR transmitter will perform well in a given application. One especially significant factor is the difference between the desired signal from a level surface and unwanted reflections that interfere with this signal, known as “signal-to-noise ratio.” Learn how signal-to-noise ratio can impact the performance of GWR transmitters.
Download the white paper now.05/03/2016
This article discusses process filtration approach developed for each technology stage starting from batch filtration in the lab to continuous filtration for the full-scale commercial operation. Process engineers must not “jump to conclusions”, a reference from Sherlock Holmes and Dr. John Watson who prove time and again is that there is no benefit to jumping to conclusions. Therefore, laboratory / bench top filtration testing is covered for problem analysis, technology selection and pilot and demonstration scale-up. The paper continues with the filtration testing and then scale-up to the commercial size. Finally, the paper concludes with a general review of the problem-solving skills of Holmes and Watson and how these skills can be utilized by process engineers as a framework for “idea-generation” when analyzing a new process scale-up.06/02/2015
Solid-liquid separation is an instrumental part of chemical processing. To separate the solid particles, filter media made of textile or metallic materials and of composite materials are used as the basis for the filter cake. Often there will also be a washing process to improve the purity of the filter cake or to increase the yield of the liquid phase. Solid-liquid separation can be carried out in continuous or batch operation. There are many factors for selecting the right process filtration system for your specific application. This white paper reviews methods for identifying the right process filtration technology for your application and highlights case studies illustrating the methods discussed.02/25/2014
Avoid Instrument Failure: Ensure Proper Filtration and Delivery of Samples to On Line Process Analyzers
Precise process control strategies have accelerated the use of on-line chemical composition analyzers in plant applications. Contaminants in plant samples are the most frequent cause of problems with on-line analyzers. Trace contaminants can rapidly build up and cause instrument failure.01/20/2012
During many chemical operations, cake washing is required since no filter system can remove all of the mother liquor by pressure or vacuum dewatering only. The topic of how to most efficiently wash the cake is important. This article introduces pragmatism into cake washing theory and will help engineers during their decision-making processes.05/13/2011
When choosing filters for your cartridge dust collector, a Total Cost of Ownership (TCO) calculation allows you to make the most economical and sustainable choice. TCO is a step-by-step evaluation that explores energy use, maintenance and other factors to compare the real costs of operating a dust collector with different filters. This white paper explains how to perform TCO calculations to save money, time and energy.03/04/2011
Organic cellulose and biomass filtration, washing and drying is very unpredictable and even minor differences in feedstock,washing or cake moisture requirements can require a different process solution. Both vacuum and pressure operations can provide equivalvent process results. On-site testing is required to determine the optimum filter selection.09/11/2009
Harmonics can have a detrimental effect on power generators and other sensitive electrical equipment for the user and utility alike. The number of adjustable speed drives (ASDs) has increased significantly in the past decade. Their contribution to the total electrical load of a power system is significant and cannot be neglected. This white paper discusses various passive techniques for reducing input current harmonics.06/18/2007
This paper discusses the problem of membrane fouling by antifoams, its leading causes and describes the development of a nonfouling antifoam for processes that use ultrafiltration downstream.09/22/2006
This article discusses the choice of thin-cake (2 25 mm) separation technologies and their benefits to optimizing the effectiveness of the production process. The paper continues with a discussion of clean-in-place operations to meet current Good Manufacturing Practices (cGMP) guidelines including riboflavin test and validations.04/20/2006
This 26-page white paper from Monitor Technologies discusses the difficulties in measuring bulk solids and powders in bins, silos and hoppers. Download this document to learn which technologies are out there that can make this job easier.01/03/2005
This 6-page primer explains the various forms of nonwoven media, their special characteristics, as well as filter configurations and function. It discusses advantages and disadvantages, and application trends.10/15/2004
This 30-page paper reviews proper engineering and design practices for enhancing the reliability of gravity flow. It covers bulk containers, including storage hoppers and bins, as well as pneumatic conveying systems.10/15/2004
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