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.

1 . A scrubber, characterized in that, treatment water of the scrubber is plasma electrolytic water, and the plasma electrolytic water is prepared by the following method: water is electrolysed, and the plasma electrolytic water is obtained. 
     
     
         2 . The scrubber according to  claim 1 , wherein the water after being electrolysed is immediately used in the scrubber; the water is electrolysed to obtain electrolytic acidic water or electrolytic alkaline water, or obtain electrolytic neutral water. 
     
     
         3 . The scrubber according to  claim 2 , wherein oxidation-reduction potential of the electrolytic acidic water is from 800 to 1500 mv; oxidation-reduction potential of the electrolytic alkaline water is from −800 to −1200 mv. 
     
     
         4 . The scrubber according to  claim 1 , wherein the water is electrolysed in a reactor continuously generating high redox water; wherein, the reactor continuously generating high redox water consists of a positive pole, a negative pole, a cation exchange film and an insulating housing, the positive pole and the negative pole are disposed on the inner side in longitudinal direction of the insulating housing with acid and alkali resistances, and high voltage resistance, the two poles are parallel and equidistant, the distance between the positive pole and the negative pole is 2-80 mm; a water inlet and a water outlet are disposed on the both sides of the insulating housing, water is injected into a pipe, water inflows from one end, and outflows from the other end; the water inlet, the negative pole, the cation exchange film, the positive pole and the water outlet are disposed in the longitudinal direction of the insulating housing in turn, the cation exchange film is located in the position parallel to the positive pole and the negative pole and respectively having equal distance from the two pole surfaces; the positive pole and the negative pole are connected to high voltage DC power supply, 100-5000 VDC of DC voltage is applied between the positive pole and the negative pole, to form the reactor continuously generating high redox water;
 and/or, in the reactor, the water outlet is disposed to one or more;   and/or, material of the positive pole is prepared using selected materials of graphite panel, platinum coating panel, ruthenium and iridium coated titanium panel or titanium panel.   
     
     
         5 . The scrubber according to  claim 4 , wherein the DC voltage is 3000-5000 VDC. 
     
     
         6 . The scrubber according to  claim 1 , wherein the water is electrolysed in an electromagnetic water treatment device; wherein, the electromagnetic water treatment device comprises a cation exchange film, a water flow passage, at least one positive pole panel and at least one negative pole panel, and a magnetic device; the positive pole panel and the negative pole panel 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 is disposed inside the water flow passage, is located between the positive pole panel and the negative pole panel, and divides the water flow passage into a first water flow passage and a second water flow passage; the magnetic device 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. 
     
     
         7 . The scrubber according to  claim 6 , wherein in the electromagnetic water treatment device, the magnetic device is several magnetic sheets, and the magnetic sheets are disposed to stick on two relative outer walls of the water flow passage; several discharge needles are distributed on the positive pole panel and the negative pole panel; the magnetic field intensity is 2000-6000 gauss;
 after being electrolysed outflows from an outlet of the electromagnetic water treatment device, the water outflows in any of the following ways:   way 1: water outflows respectively from the first water flow passage and the second water flow passage;   way 2: water outflows from confluence of the first water flow passage and the second water flow passage.   
     
     
         8 . The scrubber according to  claim 1 , wherein the scrubber comprises a tower tube, a gas inlet is disposed at the bottom of the tower tube, a gas outlet is disposed at the top of the tower tube; at least one nozzle, and at least one filler layer are disposed inside the tower tube. 
     
     
         9 . The scrubber according to  claim 8 , wherein two nozzles, and three filler layers are disposed inside the tower tube, the nozzles and the filler layers are alternately disposed from the top to the bottom; filling height of the filler layer is 1-10 m. 
     
     
         10 . The scrubber according to  claim 9 , wherein the filling height of the filler layer is 2-5 m. 
     
     
         11 . An exhaust gas purification system comprises the scrubber according to  claim 1 . 
     
     
         12 . The exhaust gas purification system according to  claim 11 , wherein the exhaust gas purification system further comprises an electrolysed water production device, a water tank, and a filter; the electrolysed water production device, the scrubber, the filter, and the water tank are circularly connected in turn. 
     
     
         13 . The exhaust gas purification system according to  claim 12 , wherein the electrolysed water production device is a reactor continuously generating high redox water; wherein, the reactor continuously generating high redox water consists of a positive pole, a negative pole, a cation exchange film and an insulating housing, the positive pole, and the negative pole are disposed on the inner side in longitudinal direction of the insulating housing with acid and alkali resistances, and high voltage resistance, the two poles are parallel and equidistant, the distance between the positive pole and the negative pole is 2-80 mm; a water inlet and a water outlet are disposed on the both sides of the insulating housing, water is injected into a pipe, water inflows from one end, and outflows from the other end; the water inlet, the negative pole, the cation exchange film, the positive pole and the water outlet are disposed in the longitudinal direction of the insulating housing in turn, the cation exchange film is located in the position parallel to the positive pole and the negative pole and respectively having equal distance from the two pole surfaces; the positive pole and the negative pole are connected to high voltage DC power supply, 100-5000 VDC of DC voltage is applied between the positive pole and the negative pole, to form the reactor continuously generating high redox water;
 and/or, in the reactor, the water outlet is disposed to one or more;
 and/or, material of the positive pole is prepared using selected materials of graphite panel, platinum coating panel, ruthenium and iridium coated titanium panel or titanium panel. 
   
     
     
         14 . The exhaust gas purification system according to  claim 13 , wherein the DC voltage is 3000-5000 VDC. 
     
     
         15 . The exhaust gas purification system according to  claim 12 , wherein the electrolysed water production device is an electromagnetic water treatment device; wherein, the electromagnetic water treatment device comprises a cation exchange film, a water flow passage, at least one positive pole panel and at least one negative pole panel, and a magnetic device; the positive pole panel and the negative pole panel 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 is disposed inside the water flow passage, is located between the positive pole panel and the negative pole panel, and divides the water flow passage into a first water flow passage and a second water flow passage; the magnetic device 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. 
     
     
         16 . The exhaust gas purification system according to  claim 15 , wherein in the electromagnetic water treatment device, the magnetic device is several magnetic sheets, and the magnetic sheets are disposed to stick on two relative outer walls of the water flow passage; several discharge needles are distributed on the positive pole panel and the negative pole panel; the magnetic field intensity is  2000 - 6000  gauss;
 after being electrolysed outflows from an outlet of the electromagnetic water treatment device, the water outflows in any of the following ways: 
 way 1: water outflows respectively from the first water flow passage and the second water flow passage; 
 way 2: water outflows from confluence of the first water flow passage and the second water flow passage. 
 
     
     
         17 . An air purification method, wherein the air purification method uses the exhaust gas purification system according to  claim 11  for treating exhaust gas. 
     
     
         18 . The air purification method according to  claim 17 , wherein the exhaust gas is exhaust gas of xylene and/or formaldehyde. 
     
     
         19 . The air purification method according to  claim 18 , wherein the concentration of the xylene or formaldehyde in the exhaust gas is 1 mg/m 3 -2000 mg/m 3 ;
 flow rate ratio of the treatment water to the exhausted gas in the scrubber is 1-3 L/m 3 ;   gas superficial velocity in the scrubber is 0.1-20 m/s.   
     
     
         20 . The air purification method according to  claim 19 , wherein the concentration of the xylene or formaldehyde in the exhaust gas is 10 mg/m 3 -50 mg/m 3 ; the gas superficial velocity in the scrubber is 0.5-1 m/s.