rotator
Powder and Bulk Engineering
Thursday, July 24, 2014
Skip Navigation LinksHome) Item Details
Powder and Bulk Engineering is a technical publication devoted to readers in the bulk solids market, worldwide.
Technical Articles
   
Item Details:
Publication Date: 10/1998
Pages: 5
Medium:
PDF Format
US:
$7.50
Author(s):
Recommended Item:
Pneumatic unloading: Staying ahead of the surge

If your plant uses a pneumatic unloading system to transfer material from pressure differential railcars and trucks, you're probably concerned about a phenomenon called the "surge." This is a large surge of air that can overwhelm your unloading system's receiving vessel and lead to other problems as well. This article discusses safe, reliable, and robust methods you can use to control surge effects.

As a pressure-differential railcar or truck compartment becomes nearly empty during pneumatic unloading, an air surge that's significantly larger than the airflow required for transferring your material will deluge the unloading system's receiving vessel [typically, a bin or silo with a dust collector such as a bin vent or baghouse]. This large surge is due to the compartment's sheer volume and can overwhelm the receiving vessel's dust collector. Commonly, the result is a dusty operation. In an extreme case, the surge can overpressurize the receiving vessel and cause it to fail. [Editor's note: For basic information on pneumatic unloading systems and how they operate, see "A practical approach to improving your pneumatic unloading rate" by Keith Solimar in Powder and Bulk Engineering, May 1994, pages 67- 74.]

To read this entire article:

You may purchase this article now for personal use. Simply click the Buy Item button above, enter your payment details, and download the article. It will be available to you for 7 days for viewing, printing, or saving for future reference. All articles are copyrighted by CSC Publishing, Inc. and cannot be used for commercial purposes without express permission in writing from the Publisher. This includes but is not limited to: web posting, printing, or sharing via email.

Security:

Your payment information is forwarded in an encrypted form, using 40- or 128-bit Secure Socket Layer technology, only to our payment gateway (Authorize.net) for processing.

Acrobat:

To view an article, you must have Acrobat Reader installed on your computer. Click on the icon to download Acrobat Reader free of charge.

HyperLink
      Copyright 2014, CSC Publishing Inc. ALL Rights Reserved * Privacy policy