Dust collector, electrode selection method for dust collector, and dust collection method

A method of electrode selection for a dust collector, the dust collector including 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, the method comprising the step of:

• performing a selection of the wire mesh so that 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).

A dust collection method comprising the step of collecting particulate material using a dust collector, the dust collector including 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).