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Title: Electrostatic coalescence system with independent AC and DC hydrophilic electrodes

Abstract

An improved electrostatic coalescence system is provided in which independent AC and DC hydrophilic electrodes are employed to provide more complete dehydration of an oil emulsion. The AC field is produced between an AC electrode array and the water-oil interface wherein the AC electrode array is positioned parallel to the interface which acts as a grounded electrode. The emulsion is introduced into the AC field in an evenly distributed manner at the interface. The AC field promotes drop-drop and drop-interface coalescence of the water phase in the entering emulsion. The continuous oil phase passes upward through the perforated AC electrode array and enters a strong DC field produced between closely spaced DC electrodes in which small dispersed droplets of water entrained in the continuous phase are removed primarily by collection at hydrophilic DC electrodes. Large droplets of water collected by the electrodes migrate downward through the AC electrode array to the interface. All phase separation mechanisms are utilized to accomplish more complete phase separation.

Inventors:
 [1];  [2]
  1. (Arlington, VA)
  2. (Morgantown, WV)
Issue Date:
Research Org.:
West Virginia Univ., Morgantown (USA)
OSTI Identifier:
863807
Patent Number(s):
4252631
Assignee:
United States of America as represented by United States (Washington, DC) NETL
DOE Contract Number:  
EY-76-S-05-5105
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrostatic; coalescence; independent; dc; hydrophilic; electrodes; improved; provided; employed; provide; complete; dehydration; oil; emulsion; field; produced; electrode; array; water-oil; interface; positioned; parallel; grounded; introduced; distributed; manner; promotes; drop-drop; drop-interface; water; phase; entering; continuous; passes; upward; perforated; enters; strong; closely; spaced; dispersed; droplets; entrained; removed; primarily; collection; collected; migrate; downward; separation; mechanisms; utilized; accomplish; electrode array; phase separation; field produced; continuous phase; closely spaced; water phase; positioned parallel; oil phase; passes upward; grounded electrode; hydrophilic electrodes; electrostatic coalescence; dc hydrophilic; /204/

Citation Formats

Hovarongkura, A. David, and Henry, Jr., Joseph D. Electrostatic coalescence system with independent AC and DC hydrophilic electrodes. United States: N. p., 1981. Web.
Hovarongkura, A. David, & Henry, Jr., Joseph D. Electrostatic coalescence system with independent AC and DC hydrophilic electrodes. United States.
Hovarongkura, A. David, and Henry, Jr., Joseph D. Thu . "Electrostatic coalescence system with independent AC and DC hydrophilic electrodes". United States. https://www.osti.gov/servlets/purl/863807.
@article{osti_863807,
title = {Electrostatic coalescence system with independent AC and DC hydrophilic electrodes},
author = {Hovarongkura, A. David and Henry, Jr., Joseph D.},
abstractNote = {An improved electrostatic coalescence system is provided in which independent AC and DC hydrophilic electrodes are employed to provide more complete dehydration of an oil emulsion. The AC field is produced between an AC electrode array and the water-oil interface wherein the AC electrode array is positioned parallel to the interface which acts as a grounded electrode. The emulsion is introduced into the AC field in an evenly distributed manner at the interface. The AC field promotes drop-drop and drop-interface coalescence of the water phase in the entering emulsion. The continuous oil phase passes upward through the perforated AC electrode array and enters a strong DC field produced between closely spaced DC electrodes in which small dispersed droplets of water entrained in the continuous phase are removed primarily by collection at hydrophilic DC electrodes. Large droplets of water collected by the electrodes migrate downward through the AC electrode array to the interface. All phase separation mechanisms are utilized to accomplish more complete phase separation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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