Title:
ELECTROSTATIC SEPARATION METHOD AND ELECTROSTATIC SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2007/049667
Kind Code:
A1
Abstract:
[PROBLEMS] To provide an electrostatic separation method and an electrostatic separator
that, in the case where the unburned fuel concentration of coal ash produced from
a boiler in a coal burning thermal power plant is as high as 15 to 30%, the ash can
be stably separated (separation into high level of unburned fuel ash and low level
of unburned fuel ash)without generating any spark, and the high level of unburned
fuel ash can be reutilized as a fuel while the low level of unburned fuel ash can
be reutilized as an auxiliary material, for example, for concrete. [MEANS FOR
SOLVING PROBLEMS] A method for electrostatically separating unburned carbon
ash contained in coal ash by electrostatic force, characterized by comprising providing
a substantially flat lower electrode and an upper electrode having a high-permittivity
resin part provided above the lower electrode, generating a DC electric field
between the lower electrode and the upper electrode in such a state that either
the upper electrode or the lower electrode is used as a plus electrode and the other
electrode is used as a minus electrode, thereby forming a separation zone utilizing
electrostatic force, and separating the unburned carbon ash in the coal ash supplied
into the separation zone, and an electrostatic separator.
Inventors:
TAKIKAWA NOBORU
MASHIO KEIICHI
MASAMOTO MANABU
FUKUMOTO KOUJI
MAYUMI YASUHIRO
MASHIO KEIICHI
MASAMOTO MANABU
FUKUMOTO KOUJI
MAYUMI YASUHIRO
Application Number:
PCT/JP2006/321323
Publication Date:
May 03, 2007
Filing Date:
October 26, 2006
Export Citation:
Assignee:
KAWASAKI PLANT SYSTEMS KK (JP)
TAKIKAWA NOBORU
MASHIO KEIICHI
MASAMOTO MANABU
FUKUMOTO KOUJI
MAYUMI YASUHIRO
TAKIKAWA NOBORU
MASHIO KEIICHI
MASAMOTO MANABU
FUKUMOTO KOUJI
MAYUMI YASUHIRO
International Classes:
B03C7/02; B09B5/00
Domestic Patent References:
| WO2002076620A1 | 2002-10-03 |
Foreign References:
| JPS60148044U | 1985-10-01 | |||
| JP2004025128A | 2004-01-29 |
Other References:
See also references of EP 1941949A4
Attorney, Agent or Firm:
SUMIDA, Yoshihiro et al. (3rd Fl. Bo-eki Bldg., 123-1, Higashimachi, Chuo-k, Kobe-shi Hyogo 31, JP)
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