Chemical Engineering
AccountGuest Edition My Account My Che.com Log In

Archives :: Processing & Handling :: Solids Handling

Displaying 281 - 300 of 326 stories.
May 1, 2009
Evaporation of moisture or volatile organic compounds (VOCs) from bulk solids usually takes place in two stages: one in which the drying rate is constant, and the second in which the rate decreases over time. Devolatilization during the first stage is rapid and can be readily accomplished in flash, spray, or fluidized bed dryers. In the second stage, however, the VOC or moisture removal rate is diffusion...
http://www.che.com/processing_and_handling/solids_handling/bins_silos_and_storage/Designing-and-Operating-Gravity-Dryers_4768.html
April 1, 2009
Pneumatic conveying of bulk solids has been successfully practiced — in industries as diverse as chemical, agricultural, pharmaceutical, plastics, food, mineral processing, cement and power generation — for more than a century. Pneumatic conveying provides advantages over mechanical conveying systems in many applications, including those that require complex routing, multiple source-destination...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Understanding-Bends-In-Pneumatic-Conveying-Systems_4655.html
March 1, 2009
The patented design of this unit improves grinder efficiency The Annihilator (photo) is a twin-shaft, solids-reduction unit designed for a variety of industrial and municipal installations, including sewage lift stations, head works and sludge processing systems. The unit’s counter-rotating, hexagonal-shaft design coupled with its five-tooth, hardened-steel cutters provide the maximum shredding...
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Focus-on-Milling-and-Grinding_4585.html
February 1, 2009
Conveyor selection is always defined by the larger project that it is meant to serve. First, there is a broad range of performance factors that must be met. Meanwhile, health, safety and environmental considerations usually outweigh the costs involved. After that, it comes down to the usual commercial considerations of price and delivery. This article covers the main parameters, benefits and disadvantages...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Selecting-A-Conveyor_4493.html
January 1, 2009
Portable mixers for pilot plant and small-scale production processing The PB Series pharmaceutical mixers (photo) feature a lightweight frame motor with a right-angle drive, 316 stainless-steel wetted parts, dry running mechanical shaft seal with CIP (clean in place) capabilities and vibration-free operation. Easily tailored to user requirements, the mixers can be configured with shafts up to 48-in. long...
http://www.che.com/processing_and_handling/solids_handling/blending/Focus-on-Mixing-and-Blending_4448.html
November 1, 2008
As chemical processors continue to feel the pinch of the worsening economy, particle sizing is becoming an increasingly important issue because it can impact reaction rates and productivity. With the needs of chemical-process-industries (CPI) customers in mind, manufacturers of a variety of particle sizing equipment — from classifiers to hammer mills to grinders — are enabling their products to...
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Newsfront-Particle-sizing-When-size-matters_4312.html
September 15, 2008
Accuracy and reliability, ease of use, the ability to handle special materials and compactness are all factors to consider when purchasing weighing, proportioning and feeding equipment for use in the chemical process industries (CPI). Because each CPI application differs, there’s a host of new technologies available to suit a variety of needs. Presented here is a round up of the latest developments...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Newsfront-Weighing-In_4164.html
August 15, 2008
  Caking occurs when an easy-flowing powder becomes cohesive after storage or transport, forming agglomerates comprised of individual particles that are bonded together. As a consequence, a powder that flowed freely during packaging may contain lumps when the package is opened by a customer; a silo that readily discharges a bulk material when in continuous operation may become plugged when its feeder...
http://www.che.com/processing_and_handling/solids_handling/Solids-Processing-Prevent-Caking-and-Unintended-Agglomeration_4084.html
July 15, 2008
The incorporation of floating solids into liquids is a common challenge throughout the chemical process industries (CPI) in operations ranging from polymerization reactions to fermentation processes and water treatment. Yet, it has received much less attention in comparison to processes involving heavy solids that tend to settle. Both established and recently proven design recommendations for incorporating...
http://www.che.com/processing_and_handling/solids_handling/blending/Feature-Report-Incorporate-Floating-Solids-Into-Liquids_4011.html
June 15, 2008
In many plants that batch-blend bulk products, weigh batching is a manual, time-consuming operation in which ingredients are weighed individually before being discharged to a blender or some other process vessel. A significant number of such plants could benefit from the installation of an automated weigh-batching system. For small as well as large operations, an automated weigh-batching system can pay for...
http://www.che.com/processing_and_handling/solids_handling/Solids-Processing-Automating-Your-Weigh-Batching-System_3953.html
June 15, 2008
TubeMaster, Inc. (Louisville, Ky.; edlinks.che.com/7373-547) has filed U.S. and foreign patents for Dog-leg — claimed to be the world’s first articulating catalyst-loading...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Chementator-Catalyst-loading_3970.html
May 15, 2008
A. Alexander and F. Muzzio, Rutgers University Proper blender selection can improve the mixing of bulk solids. Be sure to consider post-blending segregation problems Mixing and blending of bulk solids occurs frequently in many industrial processes. Though small-scale mixing and blending functions were in use back in the early days of man (for example, mixing flour, salt, yeast and water to make bread)...
http://www.che.com/processing_and_handling/solids_handling/Solids-Processing-Blender-Selection-And-Avoidance-of-Post-Blender-Segregation_3867.html
April 28, 2008
Several manufacturing procedures for chemical, cosmetic, pharmaceutical or food products distribute powder-like solids during the liquid or pasty phases of operations. The systems usually used for these operations require the injection of powders in an agitation tank. Dispersion is often performed by the same tool (located on the bottom of the tank) as the one that insures (if required) the emulsion of...
http://www.che.com/processing_and_handling/solids_handling/Vacuum-Injection-of-Powders-in-the-Center-of-the-Emulsifier_3834.html
April 15, 2008
Convey tough bulk materials that tend to pack, cake, smear, break apart or fluidize, and prevent separation of blended products Flexible screw conveyors are suitable for use with most bulk materials, from sub-micron powders to large pellets, both free-flowing and non-free-flowing. They are capable of conveying bulk materials at any angle, moving over or under obstructions and through small holes in walls...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Cover-Story-Move-Difficult-to-Handle-Bulk-Materials-with-Flexible-Screw-Conveyors_3795.html
March 15, 2008
An automated and precise powder dispenser Intended for distributing resins from reservoirs into reactors, reaction blocks, and microplates, The REDI automated powder-dispensing platform (photo) is available in several configurations. These include: the REDI super, which distributes powder samples from 100 mg to 100 g with ±2% accuracy; the REDI plus, a powder pipette suited for distributing a solid...
http://www.che.com/processing_and_handling/solids_handling/Focus-on-Bulk-Solids-Storage-Handling-and-Packaging_3721.html
March 15, 2008
Scientists at the Science and Technology Facilities Council (STFC) Rutherford Appleton Laboratory (Chilton, Didcot, U.K.; edlinks.che.com/7370-573) have developed a laser-based method for the characterization of the bulk-chemical content of pharmaceutical capsules — without opening the capsules. In...
http://www.che.com/processing_and_handling/solids_handling/testing_and_modeling/Chementator-Non-invasive-detector_3744.html
February 15, 2008
The interior surfaces of your storage tanks are constantly at risk. If you walk past a tank often without giving thought to what is happening on the inside, it is because you trust the interior coating to protect not only the storage vessel, but also to protect the product being stored from any corrosion that might occur on the tank. Without a doubt, corrosion is the principal enemy of a storage vessel. It...
http://www.che.com/processing_and_handling/solids_handling/bins_silos_and_storage/Tank-Coatings-Covering-the-Basics-of-Selection-and-Specification_3665.html
December 15, 2007
At the Chem Show last month (New York; Oct. 30 – Nov. 1), Resodyn Acoustic Mixers Inc. (Butte, Mont.; edlinks.che.com/6902-531) demonstrated its new, impeller-free mixing technology, which induces microscale turbulence through the propagation of acoustic waves. Dubbed ResonantAcoustic Mixing (RAM), the now commercially available process promises solutions for many of the complications associated with...
http://www.che.com/processing_and_handling/solids_handling/Chementator-Resodyn-Unveils-Entirely-New-Mixing-Technology-_3549.html
December 15, 2007
Scales are available in a dizzying array of types and sizes to suit different needs. Although it’s easy to default to price in order to eliminate the tedious task of researching your options, a basic knowledge of these ten key factors can help you secure the scale with the best overall value and utility for your specific application. #1: Primary Use Determining the proper style and size of the scale...
http://www.che.com/processing_and_handling/solids_handling/weighing/Solids-Processing-Weighing-Your-Options-The-10-Most-Important-Scale-Considerations_3564.html
November 15, 2007
A molecular testing method that attains a viable count of microbial organisms in as little as 4 h compared to the typical 3–14...
http://www.che.com/processing_and_handling/solids_handling/Microbial-testing_3506.html
Pages: « Previous  6 7 8 9 10 11 12 13 14 [15] 16 17 Next »

Get more from Che.com
Get email updates in your inbox

 

Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 26,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors


Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now



We also offer the following subgroup for more targeted discussions:

Tools
Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
X
To access this area, please log in or create an account.
Username:
Password:
Forgot your password?
Request it now.
Processing...
Live chat by BoldChat