Containment of Slurries in Continuous and Batch Operations

In the 1970s, the chemical operations used acetone and benzene for the main slurry solid-liquid separation process. Next, there was a push to minimize solvent use. We looked to use water as the process liquid, but still had open filter presses and rotary drum filters; the entire plant was white from titanium dioxide or pharma … Continue reading Containment of Slurries in Continuous and Batch Operations

Changing from Batch to Continuous Processing

Our approaches to process engineering must always be evolving. Otherwise, we’ll never grow and innovate. Recently, I contributed a feature to The Chemical Engineer on making the change from batch to continuous processing. Here’s an edited version of that article for my loyal blog readers.  As there is a push to become more efficient, many … Continue reading Changing from Batch to Continuous Processing

Integration & Optimization of Unit Operations Table of Contents

Where do your ideas and experience fit in? I’m looking for authors to contribute in all of the areas identified in this Table of Contents.  I look forward to hearing from you.  INTEGRATION AND OPTIMIZATION OF UNIT OPERATIONS Introduction Lab-Scale Operations Reactors  2.1.1.Agitators Process 2.2.1.Crystallization 2.2.2.Precipitation and Evaporation  2.2.3.Extraction 2.2.4.Fractionation  2.2.5.Distillation 2.2.6.Fermentation Solid-Liquid Separation 2.3.1.Filtration … Continue reading Integration & Optimization of Unit Operations Table of Contents

Optimizing downstream final drying

Every year I look forward to attending AICHE, learning from peers, and sharing what knowledge I’ve gained in the past year. COVID-19 pushed us to meet virtually this year. Still, I was pleased to continue to share my talk on BHS-Sonthofen Inc.’s continuum approach to optimizing downstream final drying with upstream solid-liquid filtration. I thought … Continue reading Optimizing downstream final drying

Weighing Alternative API Filtration Technologies

Being a process engineer is all about making choices. When it comes API filtration technologies, many different types of equipment can be used for removing catalyst residues. While conventional filtration equipment is operated manually, I recently worked with PharmTech on an article outlining how both candle filters and pressure plate filters are operated as automated … Continue reading Weighing Alternative API Filtration Technologies

Changing it Up with Mixer-Dryer-Reactor Acquisition

  Starting off 2019, I talked about push pushing ourselves personally and professionally to embrace change. Well, I’m a man of my word, and I’m proud to announce a big change in filtration technology at BHS-Sonthofen GmbH. We’re looking at 2019 as a year of growth, starting with the acquisition of the internationally active AVA-GmbH … Continue reading Changing it Up with Mixer-Dryer-Reactor Acquisition

Benefits of a Continuum Approach to Optimizing Final Drying 

  As we announced in March, BHS has acquired AVA-GmbH. The AVA technologies provide for turbulent mixing, reacting and drying of wet cakes as well as powders and process slurries. The vertical and horizontal technologies are vacuum or atmospheric, batch and continuous, for final drying to “bone-dry” powders. They are an essential part of our … Continue reading Benefits of a Continuum Approach to Optimizing Final Drying 

Dryer Selection and Bulk Solids Handling 

  Solids handling is not a unit operation. Therefore, it’s not covered in engineering courses. This leaves process engineers struggling to understand the “flowability” of bulk solids. This blind spot is huge. So, let’s talk about dryer selection and bulk solids handling. Recently in The Chemical Engineer, Grant Wellwood described bulk solids handling as the … Continue reading Dryer Selection and Bulk Solids Handling 

Clear thinking about automated clarification technologies

This is an edited version of an article I wrote for The Chemical Engineer. I hope you enjoy this take on automated clarification technologies. Throughout my career in the solid-liquid separation market space, I have seen some interesting solid-liquid separation solutions. At one melamine resin facility, the slurry was in a formaldehyde process. The operators … Continue reading Clear thinking about automated clarification technologies

Troubleshooting Filter Aids and Filtration Systems

  Filter aid pretreatment can improve filtration properties and efficient removal of fine solids. Whether the filter aids are used in Plate-and-frame filter presses, horizontal and vertical pressure leaf filters, candle or tubular filters, Nutsche filters, or rotary vacuum drum filters, these practical tips can help this part of the process run smoothly. We typically … Continue reading Troubleshooting Filter Aids and Filtration Systems