US 9,808,809 B2
Dust collector, electrode selection method for dust collector, and dust collection method
Yasutoshi Ueda, Tokyo (JP); Katsuhisa Kojima, Tokyo (JP); Kazutaka Tomimatsu, Hyogo (JP); Masaya Kato, Hyogo (JP); and Takao Tanaka, Hyogo (JP)
Assigned to MITSUBISHI HITACHI POWER SYSTEMS ENVIRONMENTAL SOLUTIONS, LTD., Kanagawa (JP)
Appl. No. 14/764,976
Filed by MITSUBISHI HEAVY INDUSTRIES MECHATRONICS SYSTEMS, LTD., Kobe-shi, Hyogo (JP)
PCT Filed Feb. 7, 2013, PCT No. PCT/JP2013/052909
§ 371(c)(1), (2) Date Jul. 30, 2015,
PCT Pub. No. WO2014/122756, PCT Pub. Date Aug. 14, 2014.
Prior Publication US 2015/0360235 A1, Dec. 17, 2015
Int. Cl. B03C 3/47 (2006.01); B03C 3/011 (2006.01); B03C 3/41 (2006.01)
CPC B03C 3/47 (2013.01) [B03C 3/011 (2013.01); B03C 3/41 (2013.01); B03C 2201/10 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A dust collector comprising:
a discharge electrode configured to have a voltage applied thereto; and
a collecting electrode having a planar member formed of a wire mesh and disposed facing the discharge electrode; wherein
the wire mesh of the planar member satisfies equations (1) and (2) below, and a gas face velocity v of penetrating the wire mesh is such that v=not less than 0.1 m/s:
IndexT=(inter-wire distance÷2)÷opening ratio+wire diameter×gas face velocity v,  (1)
IndexT≤2,   (2)
wherein a unit of IndexT is m/s,
wherein, when the wire mesh is a plain-woven or twill-woven wire mesh, the inter-wire distance is set as a minimum aperture A of an opening which gas penetrates, the aperture A being expressed as: A=(wire pitch of the wire mesh)−(wire diameter), or when the wire mesh is a plain dutch woven wire mesh, the inter-wire distance is set as a particle diameter R of a penetrating spherical particle,
wherein, when the wire mesh is the plain-woven or twill-woven wire mesh, the opening ratio is a value obtained by (opening area of the wire mesh)/(area of the wire mesh), or when the wire mesh is the plain dutch woven wire mesh, the opening ratio is a value obtained by (area which the particle penetrates)/(area of the wire mesh),
wherein the gas face velocity v is a value obtained by (amount of gas)/(area of the wire mesh).