Dielectric barrier discharge fluid purification system
First Claim
1. A system for purification of contaminated fluids by use of non-thermal plasma produced by dielectric gas phase corona discharge, said system comprising:
- a housing provided with a fluid inlet and a fluid outlet;
a corona discharge reactor means arranged in said housing for passage of the contaminated fluids therethrough, said reactor means comprising;
upper and lower frame elements, and a plurality of spaced-apart oppositely charged electrodes being supported by said frame elements, arranged as a plurality of adjoining triangular modules, each of said electrodes having a conducting element surrounded by an insulating jacket, said plurality of electrodes being arranged perpendicular to said frame elements in rows of alternate polarity wherein spacing between said electrode rows of alternate polarity is less than or equal to a diameter of said electrodes; and
a fluid swiveling means in fluid communication with said corona discharge reactor means for creating and directing a turbulent flow of said fluid through said reactor, such that when an electrical power supply is connected to said electrodes, a substantially uniformly distributed plurality of electrical microdischarges is produced, said electrical microdischarges reacting with constituents of said fluid to produce activated radicals, said fluid swiveling means providing high exposure of said fluid to said electrical microdischarges, such that contaminants contained in said fluid are attacked and decomposed by said radicals.
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Abstract
A dielectric barrier discharge plasma reactor device for plasma-based gas and liquid purification. The device comprises a series of electrodes arranged in rows of alternating polarity so as to form a series of triangular modules in which the spacing between adjacent electrodes is less than or equal to the diameter of an individual electrode. When an electrical power supply is connected to the electrodes, an electrical discharge is produced which reacts with the constituents of the fluid to produce activated radicals. The device further comprises a fluid swiveling device which facilitates homogenous flow of the contaminated fluid through the reactor by providing effective mixing between activated radicals and fluid, such that toxins contained in the fluid are attacked and decomposed by the radicals. A number of alternative embodiments of the fluid swiveling device are described.
47 Citations
19 Claims
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1. A system for purification of contaminated fluids by use of non-thermal plasma produced by dielectric gas phase corona discharge, said system comprising:
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a housing provided with a fluid inlet and a fluid outlet;
a corona discharge reactor means arranged in said housing for passage of the contaminated fluids therethrough, said reactor means comprising;
upper and lower frame elements, and a plurality of spaced-apart oppositely charged electrodes being supported by said frame elements, arranged as a plurality of adjoining triangular modules, each of said electrodes having a conducting element surrounded by an insulating jacket, said plurality of electrodes being arranged perpendicular to said frame elements in rows of alternate polarity wherein spacing between said electrode rows of alternate polarity is less than or equal to a diameter of said electrodes; and
a fluid swiveling means in fluid communication with said corona discharge reactor means for creating and directing a turbulent flow of said fluid through said reactor, such that when an electrical power supply is connected to said electrodes, a substantially uniformly distributed plurality of electrical microdischarges is produced, said electrical microdischarges reacting with constituents of said fluid to produce activated radicals, said fluid swiveling means providing high exposure of said fluid to said electrical microdischarges, such that contaminants contained in said fluid are attacked and decomposed by said radicals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for purification of contaminated fluid by use of non-thermal plasma produced by dielectric gas phase corona discharge, said method comprising:
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providing a housing formed with a fluid inlet and a fluid outlet, a corona discharge reactor means arranged in said housing for passage of the contaminated fluids therethrough, said reactor means comprising upper and lower frame elements and a plurality of spaced-apart oppositely charged electrodes being supported by said frame elements, arranged as a plurality of adjoining triangular modules, each of said electrodes having a conducting element surrounded by an insulating jacket, said plurality of electrodes being arranged perpendicular to said frame elements in rows of alternate polarity wherein spacing between said electrode rows of alternate polarity is less than or equal to a diameter of said electrodes, and a fluid swiveling means in fluid communication with said corona discharge reactor for creating and directing a turbulent flow of said fluid through said reactor;
connecting an electrical power supply to said electrodes, such that a substantially uniformly distributed plurality of electrical microdischarges is produced; and
introducing the fluid into said fluid inlet, such that said electrical microdischarges react with constituents of said fluid to produce activated radicals, while said fluid swiveling means provides high exposure of said fluid to said electrical microdischarges, such that contaminants contained in the fluid are attacked and decomposed by said radicals.
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Specification