Powder & Solids

on 'Powder & Solids'

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  • How Well Do You Know Your Dust?

    The collection and testing of dust samples is a long-established practice used by many powder and bulk processors to make informed dust collection decisions. Dust testing protocols have not changed markedly in recent years. The importance of dust testing, however, has changed, and the implications are significant. While knowing your dust has always been good practice, it is rapidly becoming a necessity in today's regulatory climate.

    This article will review two separate types of testing: (1) explosibility testing, which is used to determine whether a dust is combustible; and (2) bench testing, which pinpoints numerous physical properties of the dust. Both categories of tests are needed to determine the best dust collection system for your application and whether explosion venting equipment must be part of that system.

    Camfil Farr
    03/16/2010
  • Chemical Processing Special Report: Conveyors

    No matter what industry you’re in, chances are you use some form of conveying. Whether it be pneumatic, flexible screw, aeromechanical or other, different conveyors are required to handle different products. But which conveyor is best suited for your operation? Despite the fact that conveyors have been around for almost a hundred years, this question still baffles many industries. In order to choose the right conveyor for your operations, you need to consider your conveyor's use - production, processing, packaging, and you need to consider your business objectives - improve operations? reduce labor?

    In this special report, we look at the different types of conveyors, discuss the use of tubular bag conveyors, and provide 10 tips to prevent a variety of common problems that could occur with pneumatic conveyors.

    Hapman
    04/20/2009
  • Particle Image Understanding – A Primer

    This paper will discuss the use of pattern recognition techniques to identify and differentiate different particle types contained in a heterogeneous solution. This application involves imaging the microscopic particles in real-time as they flow in a solution, segregating each individual particle as a separate image, and then applying pattern recognition techniques to differentiate the individual particle types.A framework for discussing the complexity of a pattern recognition operation in this application will be proposed, along with some specific examples showing how this framework applies.

    Lew Brown, Fluid Imaging Technologies
    09/03/2008
  • Case Study: The Solex Heat Exchanger for Cooling Polypropylene Powder

    Samsung General Chemicals manufactures various petrochemicals and polymers. The cooling step in their polypropylene line was a bottleneck that limited the amount of powder polypropylene that they could produce per year. The PP is used for a wide variety of applications ranging from packaging films to automotive components.

    Craig Myers, Project Manager
    07/21/2008
  • Rectifier design for fuel ethanol plants reduces energy

    Plants have traditionally used trays in the distillation columns to produce fuels grade ethanol. Trays of various configurations have been adequate in this service and their technology is well founded. The ever-present desire to reduce the energy needed to produce a gallon of ethanol has opened the doors to structured packings being used in the rectification sections of ethanol distillation columns.

    Sulzer Chemtech USA
    04/10/2007
  • Process Moisture Analysis using FT-NIR

    Manufacturing a pure product can be critically important to the next steps in the manufacture of a powder-based product. As a result the removal of residual moisture and solvents from the crystallization, filtration and drying steps can be crucial to producing a stable product.

    Bruker Optics
    06/28/2006
  • Preventing Segregation During Powder Drying

    This 4-page case history by Jeroen van den Berg of Bolz-Summix discusses how changing process conditions within a conical screw dryer eliminated granulation and minimized product segregation.

    Bolz-Summix
    05/02/2006
  • Use CFD to Improve Crystallization | Chemical Processing

    In this article, Kumar Dhanasekharan, Ph.D., technical specialist with the computational fluid dynamics (CFD) specialist Fluent, Inc., shows how modelling crystallizers using CFD can help improve process understanding, control crystal size distribution (CSD) and improve pharmaceutical crystallization results.

    Fluent
    03/06/2006
  • Aseptic PAT and Particle Monitoring

    In this white paper, Mark Hallworth, pharmaceutical manager for Particle Measuring Systems, discusses continuous monitoring methods, how they’re evolving, and why they’re important.

    Particle Measuring Systems
    02/06/2006
  • Design Tips for Sensing Probes

    This application note from Delta Controls outlines selection and installation criteria for using admittance probes to monitor the level of powders, liquids and other materials. Dielectric constants of more than 200 materials are included.

    Delta Controls
    01/05/2006
  • Design Tips for Selecting Sensing Probes

    This application note from Delta Controls outlines selection and installation criteria for using admittance probes to monitor the level of powders, liquids and other materials. Dielectric constants of more than 200 materials are included.

    Delta Controls
    07/05/2005
  • Hygienic Feeder Design

    Specifying a hygienic bulk solids feeder is not a simple task. The wide variety of requirements needed for specific applications are similar in scope to explosion proof environmental requirement variations.

    Schenck
    06/06/2005
  • Systems Reliability in Material Handling

    This 23-page white paper is from the Material Handling Institute's Classic Series and discusses the reliability of automated material handling systems.

    Material Handling Institute
    05/31/2005
  • Understanding and preventing fine powder flushing

    This nine-page whitepaper discusses the sources of powder flooding, the dangers it can pose to your equipment and the steps you can take to prevent it from happening.

    Diamondback Technology
    03/01/2005
  • Eliminating arching hangups in hoppers

    This short two-page PDF whitepaper first discusses how an arch develops within a hopper and then disusses strategies for effectively removing them.

    Diamondback Technology
    01/31/2005
  • Level measurement of bulk solids and powders

    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.

    Monitor Technologies
    01/03/2005
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