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Title:
SYSTEMS AND METHODS FOR PARTICLE SIZE DETERMINATION AND CONTROL IN A FLUIDIZED BED REACTOR
Document Type and Number:
WIPO Patent Application WO/2012/090132
Kind Code:
A3
Abstract:
Systems and methods are provided for determining the size of particles within a fluidized bed reactor. The pressure of gas adjacent a gas inlet and adjacent a gas outlet of the reactor are measured with pressure sensors. An algorithm is applied to at least one of the pressure measurements to determine the size of particles within the reactor. The determined size of the particles can be used to control the operation of the reactor. A dosing system and method is provided for measuring defined volumes of particles for transport to the reactor.

Inventors:
BHUSARAPU, Satish (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
NAWAZ, Arif (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
GUPTA, Puneet (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
BALAKRISHNAN, Karthik (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
Application Number:
IB2011/055882
Publication Date:
July 05, 2012
Filing Date:
December 21, 2011
Export Citation:
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Assignee:
MEMC ELECTRONIC MATERIALS, INC. (501 Pearl Drive, St. Peters, Missouri, 63376, US)
BHUSARAPU, Satish (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
NAWAZ, Arif (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
GUPTA, Puneet (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
BALAKRISHNAN, Karthik (Inc.501 Pearl Driv, St. Peters Missouri, 63376, US)
International Classes:
G01N15/02; F27B15/08
Foreign References:
JP2005140745A
Other References:
DAVIES ET AL: "Particle size monitoring in a fluidized bed using pressure fluctuations", POWDER TECHNOLOGY, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 180, no. 3, 2 January 2008 (2008-01-02), pages 307 - 311, XP022406249, ISSN: 0032-5910, DOI: 10.1016/J.POWTEC.2007.02.026
DAVIES C ET AL: "Pressure fluctuations in a fluidized bed: A potential route to the continuous estimation of particle size", INSTITUTION OF PROFESSIONAL ENGINEERS NEW ZEALAND. ELECTRICAL, MECHANICAL AND CHEMICAL ENGINEERING SECTION. TRANSACTIONS, IPENZ, NZ, vol. 24, no. 1, 1 January 1997 (1997-01-01), pages 12 - 20, XP007920407, ISSN: 0111-946X
ANONYMOUS: "Silo overfill monitoring system: the complete protection for silos and containers", 20061203, 3 December 2006 (2006-12-03), pages 1 - 5, XP007920814
Attorney, Agent or Firm:
MUNSELL, Michael, G. et al. (Armstrong Teasdale LLP, 7700 Forsyth Blvd. Suite 1800St. Louis, Missouri, 63105, US)
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