Scrubber, exhaust gas purification system comprising scrubber, and air purification method

Abstract

A scrubber, an exhaust gas purification system comprising the scrubber, and an air purification method. The treatment water of the scrubber is plasma electrolytic water. The plasma electrolytic water is obtained after water is electrolyzed. The process of electrolysis is carried out in an electromagnetic water treatment device. The electromagnetic water treatment device comprises a cation exchange film, a water flow passage, at least one positive pole panel, at least one negative pole panel, and a magnetic device.

Claims

1. An exhaust gas purification system, comprising: a scrubber, wherein treatment water of the scrubber is plasma electrolytic water prepared by electrolyzing water; an electromagnetic water treatment device including a water flow passage, at least one positive pole panel and at least one negative pole panel disposed on opposing sections of the water flow passage, and a cation exchange film disposed within the water flow passage and located between the at least one positive pole panel and the at least one negative pole panel to thereby divide the water flow passage into a first water flow passage and a second water flow passage; a water tank; and a filter, wherein the filter, the water tank, the electromagnetic water treatment device, and the scrubber are connected to one another; the electromagnetic water treatment device further including a magnetic device having at least one pair of magnetic sheets adheringly disposed on two opposing outer walls of the water flow passage, whereby respective electric fields generated by the at least one positive and negative pole panels electrolyze water in the first and second water flow passages, and a magnetic field generated by the at least one pair of magnetic sheets is in a direction perpendicular to a direction of the electric fields generated by the at least one positive and negative pole panels in the first and second water flow passages thereby generating the plasma electrolytic water.

2. The exhaust gas purification system according to claim 1, wherein the electromagnetic water treatment device is configured to generate high redox water, further includes a housing, wherein the at least one positive pole panel and the at least one negative pole panel are disposed on opposing inner sides of the housing in a longitudinal direction of the housing and having acidic and alkali resistances, and the at least one positive and negative pole panels are parallel with respect to one another and are equidistant from the cation exchange film, the cation exchange film being disposed in parallel relative to the at least one positive and negative pole panels, the distance between the at least one positive pole panel and the at least one negative pole panel being 2-80 mm; a water inlet and at least one water outlet are disposed on opposing longitudinal ends of the housing, whereby water is injected into a pipe and water inflows from one of the longitudinal ends of the housing and outflows from the other one of the longitudinal ends of the housing; thereby the water inlet, the at least one negative pole panel, the cation exchange film, the at least one positive pole panel, and the at least one water outlet are disposed in the longitudinal direction of the housing, the at least one positive pole panel and the at least one negative pole panel are connected to a voltage DC power supply whereby 100-5000 VDC of DC voltage is applied between the at least one positive pole panel and the at least one negative pole panel; and the at least one positive pole panel composition is selected from the group of graphite panel, platinum coating panel, ruthenium and iridium coated titanium panel, or titanium panel.

3. The exhaust gas purification system according to claim 2, wherein the DC voltage is 3000-5000 VDC.

4. The exhaust gas purification system according to claim 1, wherein a plurality of discharge needles are positioned on the at least one positive pole panel and the at least one negative pole panel, whereby magnetic field intensity is 2000-6000 gauss; and subsequent to the water being electrolyzed to generate the plasma electrolytic water, the plasma electrolytic water outflows from at least one outlet of the electromagnetic water treatment device by either: the plasma electrolytic water outflowing respectively from the first water flow passage and the second water flow passage; or the plasma electrolytic water outflowing from confluence of the first water flow passage and the second water flow passage.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present disclosure is described in conjunction with the appended figures:

(2) FIG. 1 is a partial structure view of the electromagnetic water treatment device producing the plasma electrolytic water in a preferred embodiment of the present invention.

(3) FIG. 2 is an internal structure view of the water flow passage of the electromagnetic water treatment device producing the plasma electrolytic water in a preferred embodiment of the present invention.

(4) FIG. 3 is a structure view of the exhaust gas purification system in a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(5) The following embodiments further illustrate the present invention, but the present invention is not limited thereto. The unspecified conditions of the experiment methods in the following embodiments are selected according to common method and condition, or according to the commodity instruction.

Embodiment 1

(6) FIGS. 1 and 2 illustrate an electromagnetic water treatment device 1 of the present invention. The electromagnetic water treatment device 1 comprises a cation exchange film 15, a water flow passage 14, at least one positive pole panel 111 and at least one negative pole panel 112, and a magnetic device 12; the positive pole panel 111 and the negative pole panel 112 are disposed on the water flow passage, and applied an electric field, to electrolyze the solution in the water flow passage; the cation exchange film 15 is disposed inside the water flow passage 14, is located between the positive pole panel and the negative pole panel, and divides the water flow passage 14 into a first water flow passage 142 and a second water flow passage 141; the magnetic device 12 is disposed on the water flow passage, to apply a magnetic field perpendicular to the direction of the electric field in the water flow passage, and in the present embodiment, the magnetic device is a plurality of magnetic sheets 121, the strength of the magnetic field produced by the magnetic sheets is 6000 gauss. Several discharge needles 114 are distributed on the positive pole panel and the negative pole panel. The positive pole panel and the negative pole panel are respectively connected to the positive and the negative of the power supply through a wire 113. When tap water passes through the electromagnetic water treatment device, electricity is provided for electrolysis. The tap water generally contains sodium chloride, magnesium chloride and other mineral salts, according to the principle of electrolysis of water, under the effect of the cation exchange film, electrolytic acidic water will be produced nearby the positive pole panel 111, and it contains a lot of negative oxygen ions (O.sup.2−, O.sup.3−), having strong oxidation; electrolytic alkaline water will be produced nearby the negative pole panel 112. And in the presence of the magnetic field perpendicular to the water flow passage, water flows in the pipe, in the case of cutting the magnetic field the positive and negative ions in the water will be affected by a Lorentz force which will accelerate the movement of the positive and negative ions towards the pole panels. Taking the present embodiment as an example, according to FIG. 2, the magnetic sheets 121 upper of the water flow passage are N-pole magnetic sheets, the magnetic sheets 121 lower of the water flow passage are S-pole magnetic sheets, during the electrolysis process while moving to the negative pole panel with a large number, the cations will also move and cut the magnetic induction line along the flow direction (the flow direction is shown as “x” in FIG. 2) and affected by the Lorentz force directing to the negative pole panel 112, to accelerate the movement of the cations. Water outflows from confluence of the first water flow passage 142 and the second water flow passage 141 to obtain electrolytic neutral water; water outflows respectively from the first water flow passage 142 and the second water flow passage 141 to simultaneously obtain electrolytic acidic water and electrolytic alkaline water.

(7) In practical applications, the disposition of positive and negative pole panels and N-pole and S-pole of the magnetic sheets, as well as the flow direction can be adjusted and coordinated in accordance with the actual situation, as long as the electrolysis and magnetic field cooperates to accelerate the movement of the ions in the water.

Embodiment 2

(8) As shown in FIG. 3, the present embodiment provides an exhaust gas purification system, the exhaust gas purification system comprises an electromagnetic water treatment device 1, a scrubber 4, a filter 3, and a water tank 2; the electromagnetic water treatment device 1, the scrubber 4, the filter 3, and the water tank 2 are circularly connected in turn. The scrubber 4 comprises an gas inlet 42, a tower tube 48, a gas outlet 41, and a water outlet 49; two nozzles, and three filler layers are disposed inside the tower tube 48, from the top to the bottom a first nozzle 43, a first filler layer 44, a second filler layer 45, a second nozzle 46 and a third filler layer 47 are disposed in turn.

(9) Water from the water tank 2 enters the electromagnetic water treatment device 1 after being electrolysed to obtain plasma electrolytic water of the present invention, the plasma electrolytic water is sprayed to the first filler layer 44, the second filler layer 45 and the third filler layer 47 inside the tower tube through the first nozzle 43 and second nozzle 46, and the exhaust gas enters into the tower tube through the gas inlet 42 at the bottom of the tower tube and then passes through the third filler layer 47, the second filler layer 45 and the first filler layer 44 in turn, after the absorption of the plasma electrolytic water and decomposition reaction, the gas is expelled from the gas outlet 41 at the top of the tower tube. The plasma electrolytic water outflows from the water outlet 49 at the bottom of the tower tube, flowing through the filter 3 to filter, passing through the water tank 2 and re-entering the electromagnetic water treatment device 1, and repeating the above processes, the water of which has always been recycled. After the end of the exhaust gas treatment process, expelling the plasma electrolytic water.

Embodiment 3

(10) The present embodiment is substantially the same as embodiment 2, except that, using a reactor continuously generating high redox water in embodiment 1 of Chinese patent application having an authorization publication No.: CN102320684B of invention patent (the content of which is incorporated herein by reference in its entirety) to replace the electromagnetic water treatment device 1 in the embodiment 2 of the present invention. The height of the filler layer in the scrubber is 2 m, and the gas superficial velocity in the scrubber is 0.5 m/s.

Embodiment 4

(11) The present embodiment is substantially the same as embodiment 2, except that, the voltage between the positive pole and negative pole is 3000 volts DC; using a reactor continuously generating high redox water in embodiment 2 of the invention patent having an authorization publication No.: 102320684B (the content of which is incorporated herein by reference in its entirety) to replace the electromagnetic water treatment device 1 in the embodiment 2 of the present invention. The height of the filler layer in the scrubber is 5 m, and the gas superficial velocity in the scrubber is 1 m/s.

Embodiment 5

(12) This embodiment is substantially the same as embodiment 3, except that, the voltage between the positive pole and negative pole is 100 volts DC. The oxidation-reduction potential of the produced electrolytic acidic water is 800 mv, and the oxidation-reduction potential of the electrolytic alkaline water is preferably −800 my. The height of the filler layer in the scrubber is 1 m, and the gas superficial velocity in the scrubber is 20 m/s. The flow rate ratio of the treatment water to the exhausted gas in the scrubber is 1 L/m.sup.3.

Embodiment 6

(13) This embodiment is substantially the same as embodiment 3, except that, the voltage between the positive pole and negative pole is 5000 volts DC. The oxidation-reduction potential of the produced electrolytic acidic water is 1500 mv, and the oxidation-reduction potential of the electrolytic alkaline water is −1200 mv. The height of the filler layer in the scrubber is 10 m, and the gas superficial velocity is 0.1 m/s. The flow rate ratio of the treatment water to the exhausted gas in the scrubber is 3 L/m.sup.3.

(14) Using the double-deck scrubber of the exhaust gas purification system in embodiment 3, the conventional absorption liquid and the plasma electrolytic water are respectively used for treating exhaust gas. Conventional absorption liquid generally may be sodium hydroxide solution, sulfuric acid solution or sodium hypochlorite solution. Conventional absorbent solution used in the present embodiment is sodium hypochlorite solution. The water amount in the double-deck scrubber is 1 ton.

(15) 10000 m.sup.3 of the exhaust gas containing xylene or formaldehyde is hourly passed into for treatment. The concentration of the xylene in the exhaust gas in table 1 is 50 mg/m.sup.3. The concentration of the formaldehyde in the exhaust gas in table 2 is 10 mg/m.sup.3. After the treatments respectively using the methods of the present invention and conventional treatment, test the concentration of the xylene or formaldehyde in the gas outlet and in the water.

(16) The detection method of the formaldehyde in the air: spectrophotometer chemical analysis

(17) The detection method of the formaldehyde in the water: AHMT spectrophotometry of GB/T5750.10-2006 “Standard Examination Methods for Drinking Water”.

(18) The detection method of the xylene in the air: GB11737-89 gas chromatographic method

(19) The detection method of the xylene in the water: gas chromatographic method

(20) TABLE-US-00001 TABLE I Treatment of the exhaust gas containing the xylene concentration concentration initial concentration concentration in the plasma in the plasma concentration of the gas of the gas electrolytic electrolytic of the gas outlet after outlet after water after water after inlet 2 hours 4 hours 2 hours 4 hours the treatment 50 mg/m.sup.3  5 mg/m.sup.3 4.5 mg/m.sup.3 1 g/m.sup.3 0.9 g/m.sup.3 using the plasma electrolytic water of the present invention conventional 50 mg/m.sup.3 49 mg/m.sup.3  48 mg/m.sup.3 4 g/m.sup.3   4 g/m.sup.3 treatment

(21) TABLE-US-00002 TABLE II Treatment of the exhaust gas containing the formaldehyde concentration concentration initial concentration concentration in the plasma in the plasma concentration of the gas of the gas electrolytic electrolytic of the gas outlet after outlet after water after water after inlet 2 hours 4 hours 2 hours 4 hours the treatment 10 mg/m.sup.3 0.05 mg/m.sup.3 0.047 mg/m.sup.3 0.7 mg/m.sup.3 0.65 mg/m.sup.3 using the plasma electrolytic water of the present invention Conventional 10 mg/m.sup.3  0.7 mg/m.sup.3  0.65 mg/m.sup.3 190 g/m.sup.3  350 g/m.sup.3 treatment

(22) All of embodiments 1, 2, and 4-6 can achieve the above effects.

(23) Although the specific embodiments of the present invention are described foregoing, a person skilled in the art should understand that these are only illustrative examples, various changes or modifies can be made to these embodiments without departing from the principle and essence of the invention.