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Abstract

Tests were conducted to study the initial deposition of water-suspended PbS particles in a 13 mm ID, 304 Stainless Steel pipe. The tests covered the range of Reynolds number between 3000 and 12000 and pH between 1.5 and 6.5. Initial deposition rates were obtained by weighing specially made coupons over a period of 24 hr. The deposits were also examined under a Scanning Electron Microscope. The maximum deposition rates occur in the vicinity of the isoelectric point of PbS particles, while far from this point no significant deposition is observed. The deposition rates increase linearly with flow rate in the range of Reynolds numbers investigated. Two types of deposits are recognized; i.e. hard and loosely bound sludgy'' deposits. Particle-wall physicochemical interactions, modified through the solution pH, appear to play a dominant role in PbS deposition.

Additional information

Authors: ANDRITSOS N, CHEMICAL PROCESS ENGINEERING RESEARCH INSTITUTE (GREECE) DEPARTMENT OF CHEMICAL ENGINEERING, UNIVERSITY OF THESSALONIKI (GREECE);KARABELAS A J CHEMICAL PROCESS ENGINEERING RESEARCH INSTITUTE (GREECE) DEPARTMENT OF CHEMICAL ENGINEERING, UNIVERSITY OF THESSALONIKI (GREECE), CHEMICAL PROCESS ENGINEERING RESEARCH INSTITUTE (GREECE) DEPARTMENT OF CHEMICAL ENGINEERING, UNIVERSITY OF THESSALONIKI (GREECE)
Bibliographic Reference: INTERNATIONAL CONFERENCE ON FOULING AND CLEANING OF PROCESS PLANTS, ST. CATHERINE'S COLLEGE, OXFORD (UK), JULY, 25-29, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3, POB 1907, MENTIONING PAPER EN 34164 ORA
Availability: Can be ordered online
Record Number: 1989126101800 / Last updated on: 1989-06-01
Category: PUBLICATION
Available languages: en