Dust collector

A dust collector, comprising:

• charging means for charging a substance which is contained in a gas and is to be collected;
• spray means for spraying a dielectric on said substance to be collected charged by said charging means;
• electric field forming means, having first and second electrodes for forming a direct current electric field, for dielectrically polarizing said dielectric sprayed by said spray means by means of said direct current electric field, wherein said polarized dielectric arrests said substance;
• and
• dielectric collecting means for collecting said dielectric which has arrested said substance to be collected,
• wherein the distribution of said dielectric sprayed by said spray means is set so that the distribution of said dielectric at the rear part of said first and second electrodes is uniformed.

A dust collector, comprising:

• charging means for charging a substance which is contained in a gas and is to be collected;
• spray means for spraying a dielectric on said substance to be collected charged by said charging means;
• electric field forming means, having first and second electrodes for forming a direct current electric field, for dielectrically polarizing said dielectric sprayed by said spray means by means of said direct current electric field, wherein said polarized dielectric arrests said substance;
• and
• dielectric collecting means for collecting said dielectric which has arrested said substance to be collected,
• wherein said spray means is provided with charge providing means for providing said dielectric before being sprayed with a charge having a reverse polarity of the charging polarity of said substance to be collected.

A dust collector comprising:

• a charging unit configured to charge a substance which is contained in a gas and is to be collected;
• a spray unit configured to spray a dielectric on said substance to be collected;
• an electric field forming device configured with first and second electrodes to form a direct current electric field, said direct current electric field dielectrically polarizing said dielectric sprayed by said spray unit such that a polarized dielectric arrests said substance;
• a dielectric collector configured to collect said dielectric which has arrested said substance to be collected;
• a plurality of corona discharge sections arranged in a flow direction of said gas at given intervals, formed on opposed surfaces of said first and second electrodes, and configured to generate a band-shaped uniform corona discharge perpendicular to the gas flow;
• and
• said dielectric provided alternately with a charge of reverse polarity by the corona discharge.

A dust collector comprising:

• a charging unit configured to charge a substance which is contained in a gas and is to be collected;
• a spray unit configured to spray a dielectric on said substance to be collected charged by said charging unit;
• an electric field forming device configured with first and second electrodes to form a direct current electric field, said direct current electric field dielectrically polarizing said dielectric sprayed by said spray unit such that a polarized dielectric arrests said substance;
• a dielectric collecting device configured to collect said dielectric which has arrested said substance to be collected;
• and
• said spray unit configured to provide a spray distribution of said dielectric sprayed such that the distribution of said dielectric at a rear part of said first and second electrodes is uniform.

A dust collector comprising:

• a charging unit configured to charge a substance which is contained in a gas and is to be collected;
• a spray unit configured to spray a dielectric on said substance to be collected charged by said charging unit;
• an electric field forming device configured with first and second electrodes to form a direct current electric field, said direct current electric field dielectrically polarizing said dielectric sprayed by said spray unit such that a polarized dielectric arrests said substance;
• a dielectric collecting device configured to collect said dielectric which has arrested said substance to be collected;
• and
• said spray unit is provided with a charge providing unit configured to provide the dielectric before being sprayed with a charge having a reverse polarity of a charging polarity of said substance to be collected.