Electrostatic Ignition Hazards Associated with the Pneumatic Transfer of Flammable Powders through Insulating or Dissipative Tubes and Hoses

When transferring powder through pipes or hoses made from insulating material, propagating brush discharges cannot be excluded. To calculate the limit value of the resistivity of the insulating material, below which no propagating brush discharges will occur, the charging current due to the powder t...

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Bibliographic Details
Published in:Chemical engineering transactions 2013-01, Vol.31
Main Authors: M. Glor, C. Blum, W. Fath, C.D. Walther
Format: Article
Language:English
Online Access:Get full text
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Summary:When transferring powder through pipes or hoses made from insulating material, propagating brush discharges cannot be excluded. To calculate the limit value of the resistivity of the insulating material, below which no propagating brush discharges will occur, the charging current due to the powder transfer must be known. This charging current has been determined experimentally. Based on analytical calculations and computer models limit values for the resistivity of the hose material are derived from these experiments.
ISSN:2283-9216
DOI:10.3303/CET1331116