TWI598147B - Exhaust purifier - Google Patents

Description

Exhaust gas purification device

The present invention relates to a purification apparatus, and more particularly to an exhaust gas purification apparatus.

In order to balance economic development and environmental protection, international and national governments have enacted relevant laws and regulations to manage industrial waste gas generated by economic activities. It is required that factories must properly treat exhaust gas according to established procedures and reduce the toxic content of exhaust gas to a standard value in the factory. Only then can it be further discharged into the atmosphere, thereby avoiding the harm of air pollution to people's health.

Please refer to FIG. 1 , which is a conventional exhaust gas purifying device 9 . The conventional exhaust gas purifying device 9 includes a tower body 91 , a plurality of sprinkling pipes 92 , and a plurality of non-woven filter nets 93 . The plurality of sprinkling pipes 92 and The plurality of nonwoven filters 93 are staggered inside the tower 91. The tower body 91 has an air inlet 911 and an air outlet 912. The bottom of the tower body 91 is further provided with a liquid storage tank 913 for storing the washing liquid. The plurality of sprinkler pipes 92 are connected to the liquid storage tank 913, and each of the sprinkler pipes 92 is provided with a plurality of water discharge holes 921, and each of the non-woven filter nets 93 is located below the water discharge holes 921 of the sprinkler pipes 92. The conventional exhaust gas purifying device 9 is further provided with a pump 94 for pumping the washing liquid in the liquid storage tank 913 into the sprinkler pipe 92, so that the washing liquid is discharged from the plurality of water outlet holes 921. The bottom of the tower body 91 is sprayed.

When the industrial exhaust gas is treated by the conventional exhaust gas purifying device 9, the washing liquid in the liquid storage tank 913 is introduced into each of the sprinkling pipes 92 through the pump 94, and then the exhaust gas to be treated is introduced from the air inlet 911. The inside of the tower body 91 flows the exhaust gas to be treated in the direction of the exhaust port 912. When the exhaust gas to be treated passes through each of the non-woven filter screens 93, the macromolecular dust or suspended particles in the exhaust gas to be treated can be The non-woven filter screen 93 is filtered out while reducing the passage of the non-woven fabric The exhaust gas flow rate of the screen 93 allows the exhaust gas to have sufficient time to contact the washing liquid to adhere the dirt and suspended particles to the washing liquid, thereby reducing the amount of contaminants in the exhaust gas.

Although the conventional exhaust gas purifying device 9 can be used to filter out particulate pollutants (such as dirt and aerosols) in the exhaust gas, the exhaust gas generated by the coating process and the chemical raw material process often contains volatile organic compounds (volatile Organic compounds (VOCs) and odors, the conventional exhaust gas purifying device 9 cannot filter and purify these substances, so that the conventional exhaust gas purifying device 9 can only be applied to a part of the exhaust gas treating program, which greatly limits the conventional exhaust gas purifying device 9 Applicability.

In view of the above, it is necessary to provide an exhaust gas purifying device to solve the problem that the conventional exhaust gas purifying device 9 cannot reduce the volatile organic compound and odor content of the exhaust gas.

The invention provides an exhaust gas purifying device for effectively removing volatile organic substances and odor content in exhaust gas.

The present invention provides an exhaust gas purifying apparatus, comprising: a washing tower, a first gas inlet, a first gas outlet and a washing unit, wherein the washing unit is disposed at the first gas inlet and the first gas Between the outlets; an organic gas adsorber connected to the first gas outlet of the scrubbing tower; and an ozone generator for supplying ozone to the organic gas adsorber, wherein the connecting tube further comprises a connecting tube a first end connected to the first gas outlet of the scrubbing tower, the second end being connected to the organic gas adsorber, the ozone generator comprising a first ozone a conveying pipe, the first ozone conveying pipe is connected to the connecting pipe and adjacent to the second end, so that the ozone generator supplies ozone to the organic gas adsorber, and the ozone generator further comprises a second ozone conveying pipe The second ozone delivery tube is coupled to the connecting tube and adjacent to the first end.

The exhaust gas purifying device of the present invention further comprises an exhaust gas introduction pipe connected to the first gas inlet of the washing tower, and the ozone generator further comprises a a third ozone delivery pipe connected to the exhaust gas introduction pipe and adjacent to the first gas inlet.

In the exhaust gas purifying device of the present invention, the organic gas adsorber is provided with a second gas inlet, a second gas outlet and a first activated carbon filter layer, and the first activated carbon filter layer is disposed at the second gas inlet And between the second gas outlets.

In the exhaust gas purifying device of the present invention, the organic gas adsorber further comprises a filter layer disposed between the second gas inlet and the first activated carbon filter layer.

In the exhaust gas purifying apparatus of the present invention, the organic gas adsorber further comprises a second activated carbon filter layer disposed between the first activated carbon filter layer and the second gas outlet.

The exhaust gas purifying device of the present invention, wherein the washing tower further comprises at least one demisting member, the demisting member being disposed between the washing unit and the first gas outlet.

The exhaust gas purifying device of the present invention, wherein the washing unit comprises a water tank, a pumping pump, a first water pipe and a second water pipe, the water tank is disposed at the bottom of the washing tower, and the first water pipe and The second water conduit is in communication with the water tank, and the first water conduit and the second water conduit are in communication with the pumping pump.

In the exhaust gas purifying device of the present invention, the first gas inlet is disposed at a side of the washing tower near the bottom, the first gas outlet is disposed at the top of the washing tower, the first water conduit and the second Each of the water pipes is provided with a plurality of spray ports which are disposed in a direction toward the bottom of the wash tower.

In the exhaust gas purifying device of the present invention, the washing tower further comprises a separating filter layer disposed between the first water pipe and the second water pipe.

The exhaust gas purifying device of the present invention further comprises an exhaust pump and a discharge pipe, and the exhaust pump is connected to the organic gas adsorber and the discharge pipe.

The exhaust gas purifying device of the present invention, wherein the ozone generator has a pure oxygen And a plasma generating unit, the pure oxygen machine is connected to the plasma generating unit, and the plasma generating unit is connected to the first ozone conveying pipe, the second ozone conveying pipe and the third ozone conveying pipe.

An exhaust gas purifying apparatus according to the present invention, comprising: an organic gas adsorber and an ozone generator, wherein the organic gas adsorber is connected to the scrubbing tower to further remove exhaust gas of particulate contaminants by washing, further An activated carbon filter layer and the second activated carbon filter layer adsorb volatile organic compounds and odors in the exhaust gas, and ozone generated by the ozone generator also contributes to decomposition of volatile organic compounds, thereby making the exhaust gas purification device more It can effectively adsorb or decompose volatile organic compounds and odors, thereby improving the application of the exhaust gas purification device.

〔this invention〕

1‧‧‧washing tower

1a‧‧‧ top

1b‧‧‧ bottom

11‧‧‧First gas inlet

12‧‧‧First gas export

13‧‧‧Washing unit

131‧‧‧Water tank

132‧‧‧ pumping pump

133‧‧‧First water pipe

133a‧‧‧ spray port

134‧‧‧Second water pipe

134a‧‧‧ spray port

14‧‧‧Defogging parts

2‧‧‧Organic gas adsorber

21‧‧‧Second gas inlet

22‧‧‧Second gas outlet

23‧‧‧Adsorption space

24‧‧‧First activated carbon filter

25‧‧‧Second activated carbon filter

26‧‧‧Filter layer

3‧‧‧Ozone generator

31‧‧‧Oxygen machine

32‧‧‧Plastic generating unit

32'‧‧‧ Plasma generation module

321‧‧‧First Ozone Pipe

322‧‧‧Second ozone delivery tube

323‧‧‧ Third Ozone Pipe

33‧‧‧Display control unit

4‧‧‧Exhaust pump

5‧‧‧Exhaust gas inlet pipe

6‧‧‧Connecting tube

61‧‧‧ first end

62‧‧‧ second end

7‧‧‧Drainage tube

71‧‧‧Drainage

[study]

91‧‧‧Tower

911‧‧ Air intake

912‧‧ vent

913‧‧‧ liquid storage tank

92‧‧‧Sprinkles

921‧‧‧ water outlet

93‧‧‧Non-woven filter

Fig. 1 is a sectional view showing a combination of a conventional exhaust gas purifying device.

Fig. 2 is a plan view showing the appearance of the exhaust gas purifying apparatus of the present invention.

Fig. 3 is a sectional view showing the combination of the washing tower of the exhaust gas purifying apparatus of the present invention.

Fig. 4 is a sectional view showing the combination of an organic gas adsorber of the exhaust gas purifying apparatus of the present invention.

Fig. 5 is a view showing the internal arrangement of an ozone generator of the exhaust gas purifying apparatus of the present invention.

Fig. 6 is an external view of an ozone generator of the exhaust gas purifying apparatus of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Please refer to FIG. 2, which is a plan view of the exhaust gas purifying apparatus of the present invention. The exhaust gas purifying device comprises a washing tower 1, an organic gas adsorber 2 and an ozone generator 3, the washing tower 1 is connected to the organic gas adsorber 2, and the ozone generator 3 is used for supplying ozone to The organic gas adsorber 2 is. Preferably, the exhaust gas purifying device comprises an exhaust pump 4 for operating the exhaust gas in the exhaust gas purifying device under the operation of the exhaust pump 4 Flow in a predetermined direction.

Referring to Figures 2 and 3, the scrubbing tower 1 has a top portion 1a and a bottom portion 1b, and the scrubbing tower 1 includes a first gas inlet 11, a first gas outlet 12 and a washing unit 13. The first gas inlet 11 is disposed at a side of the washing tower 1 adjacent to the bottom portion 1b, the first gas outlet 12 is disposed at the top 1a of the scrubbing tower 1, and the washing unit 13 is located at the first gas Between the inlet 11 and the first gas outlet 12. Preferably, the washing tower 1 further comprises at least one mist removing member 14, and the number of the mist removing members 14 is preferably several, and the plurality of mist removing members 14 are disposed on the washing unit 13 and the first gas outlet 12 Between the plurality of defogging members 14 are arranged in a spaced apart arrangement to reduce the humidity of the washed exhaust gas.

Referring to FIG. 3, the washing unit 13 of the washing tower 1 comprises a water tank 131, a pumping pump 132, a first water pipe 133 and a second water pipe 134, and the water tank 131 is disposed in the washing. The bottom portion 1b of the tower 1 is connected to the water tank 131 to pump the liquid contained in the water tank 131 to the first The water pipe 133 and the second water pipe 134 are included. Further, the first water delivery pipe 133 and the second water delivery pipe 134 are provided with a plurality of spray ports 133a and 134a, and the plurality of spray ports 133a and 134a are disposed in the direction of the bottom portion 1b of the washing tower 1. In addition, the washing tower 1 may further include a separation filter layer 15 disposed between the first water conduit 133 and the second water conduit 134, and the separation filter layer 15 is arranged to prolong the exhaust gas retention. At the time of the scrubber 1, the efficiency of washing the scrubber 1 to remove particulate contaminants is increased.

Referring back to FIG. 2, the exhaust gas purifying apparatus of the present embodiment further includes an exhaust gas introduction pipe 5 and a connecting pipe 6, and the washing tower 1 communicates with other members through the exhaust gas introducing pipe 5 and the connecting pipe 6. The exhaust gas introduction pipe 5 is connected to the first gas inlet 11 of the washing tower 1 at one end, and the other end of the exhaust gas introduction pipe 5 is connected to an exhaust gas collecting device in the factory. The exhaust gas is directed into the scrub column 1 . In addition, the The connecting pipe 6 has a first end 61 and a second end 62. The connecting pipe 6 is connected to the first gas outlet 12 of the washing tower 1 by the first end 61, and is connected by the second end 62. In the organic gas adsorber 2, the connecting pipe 6 is used to discharge the exhaust gas washed by the washing column 1 to the washing column 1, and to the organic gas adsorber 2 for subsequent processing.

Referring to FIGS. 2 and 4, the organic gas adsorber 2 is provided with a second gas inlet 21, a second gas outlet 22, and an adsorption space 23, and the adsorption space 23 is disposed at the second gas inlet 21. And between the second gas outlet 22 and the second gas inlet 21 and the second gas outlet 22. A first activated carbon filter layer 24 is disposed in the adsorption space 23. Preferably, the organic gas adsorber 2 is further provided with a second activated carbon filter layer 25 and a filter layer 26, and the second activated carbon filter layer 25 It is disposed between the first activated carbon filter layer 24 and the second gas outlet 22, and the filter layer 26 is disposed between the second gas inlet 21 and the first activated carbon filter layer 24. It is to be noted that the first activated carbon filter layer 24 and the second activated carbon filter layer 25 are used for adsorbing VOCs and odors in the exhaust gas, and the filter layer 26 is used for adsorbing larger-sized particles in the exhaust gas. Shaped pollutants.

Please refer to FIGS. 5 and 6 , which are respectively an external view and an internal view of the ozone generator 3 of the exhaust gas purifying device of the present invention. The ozone generator of the present invention generates ozone by using plasma, but the ozone generator Without limiting the ozone generating mechanism, the ozone generator 3 includes at least one pure oxygen machine 31 and at least one plasma generating unit 32, and the pure oxygen machine 31 is connected to the plasma by an oxygen pipe t. Unit 32, the pure oxygen machine 31 is for generating oxygen (O ₂ ), and the plasma generating unit 32 decomposes oxygen in the air into oxygen ions (O ⁻ ) through plasma action, and causes oxygen and oxygen ions to Ozone (O ₃ ) is generated in the plasma generating unit 32. In addition, the ozone generator 2 includes a first ozone delivery tube 321 having one end connected to the plasma generating unit 32, and the first ozone delivery tube 321 is coupled at the other end. The connecting pipe 6 is adjacent to the second end 62 to provide ozone generated by the ozone generator 3 to the organic gas adsorber 2 through the first ozone conveying pipe 321 under the operation of the exhaust pump 4 in.

In the present embodiment, the ozone generator 3 is provided with a plurality of oxygen pipes t, the number of the pure oxygen machines 31 is two, the number of the plasma generating units 32 is twelve, and four of the plasmas The generating units 32 are arranged in a row to collectively form a plasma generating module 32' having three plasma generating modules 32'. And each of the plasma generating units 32 in the plasma generating module 32' is connected in series with three of the oxygen generating tubes t to ensure a sufficient amount of oxygen ions to react with oxygen, thereby increasing the output of the ozone generator 3. The amount of ozone. The ozone generator 3 is further provided with a display control unit 33 for presenting the operational state of the ozone generator 3 through the display control unit 33 and for the operator to operate the ozone generator 3.

In order to improve the processing capability of the exhaust gas purifying device of the present invention for VOCs and odors, the ozone generator 3 further includes a second ozone conveying pipe 322 and a third ozone conveying pipe 323, the second ozone conveying pipe 322 and the third ozone. The conveying pipe 323 is respectively connected to the other two plasma generating modules 32', and the second ozone conveying pipe 322 is for sending ozone to the connecting pipe 6 adjacent to the first end 61, the third ozone The conveying pipe 323 is configured to transport ozone to the exhaust gas inlet pipe 5 adjacent to the first gas inlet 11, so that the exhaust gas can react with ozone in different treatment stages of the exhaust gas purifying device to reduce the content of VOCs and odors therein. . It should be noted that, depending on the type of exhaust gas to be treated, the ozone generated by the ozone generator 3 can be transported to any position of the exhaust gas treatment device, and the ozone generator 3 of the present embodiment is not simultaneously provided. The first ozone transfer pipe 321, the second ozone transfer pipe 322, and the third ozone transfer pipe 323 are limited as long as the ozone generator 3 can transport ozone to any one of the exhaust gas treatment devices to remove VOCs and odors. All are within the scope of the invention.

In addition, the exhaust gas purifying apparatus of the present invention preferably further includes a discharge pipe 7 having a discharge port 71 which is in communication with the outside, and the discharge port 71 is disposed at a height, the discharge pipe 7 is connected to the exhaust pump 4 with respect to one end of the discharge port 71, so as to pass through the scrubber 1, the organic gas adsorber 2, and the ozone-treated exhaust gas. The discharge pipe 7 is discharged to a higher level atmosphere.

Referring to FIG. 2 again, the flow of treating the exhaust gas by the exhaust gas purifying device will be described. In short, the flow direction of the exhaust gas is driven by the exhaust pump 4, and sequentially through the exhaust gas delivery pipe 5. The washing tower 1, the connecting pipe 6, and the organic gas adsorbing device 2 to the discharge pipe 7. Referring again to FIG. 3, first, the exhaust gas enters the exhaust gas purifying device from the exhaust gas introduction pipe 5, and the ozone transported by the third ozone transport pipe 323 is first mixed with the exhaust gas before the exhaust gas enters the scrubbing tower 1. To initially remove some of the VOCs and odors in the exhaust gas. When the exhaust gas enters the scrubbing tower 1 through the first gas inlet 11, the particulate matter in the exhaust gas is removed by the scrubbing unit 13. In detail, the water in the water tank 131 is pumped to the first water delivery pipe 133 and the second water delivery pipe 134 through the pumping pump 132, so that water is sprayed from the spray ports 133a, 134a to the washing tower 1 The water tank 131 is sprayed over a large area, and the particulate pollutants mixed in the exhaust gas are sedimented by spraying to remove particulate pollutants such as dust and ash which are introduced into the exhaust gas of the washing tower 1.

Then, the exhaust gas which is initially removed by the particulate pollutants rises in the defogging tower 1 to contact the mist removing member 14 to increase the moisture in the exhaust gas due to the washing. The condensation can be condensed on the mist removing member 14, thereby reducing the humidity of the exhaust gas sent from the first gas outlet 12 to prevent the excessively humid exhaust gas from weakening the first activated carbon when subsequently entering the organic gas adsorber 2. The adsorption capacity of the filter layer 24 and the second activated carbon filter layer 25 for VOCs and odors.

Referring to Fig. 2, the exhaust gas treated by the scrubber 1 is sent to the organic gas adsorber 2 through the connecting pipe 6 for further processing. Since the first tube 61 and the second end 62 are respectively connected to the second ozone delivery tube 322 and the first ozone delivery tube 321 in the connecting tube 6, the exhaust gas is transported to the organic In the process of the gas adsorber 2, the second and third steps of removing VOCs and odors are performed on the exhaust gas. And, by the operation of the air pump 4, the first ozone delivery pipe 321 is sent to the company The ozone that takes over the second end 62 of the tube 6 can be further pumped into the organic gas adsorber 2.

Referring to FIG. 4, the exhaust gas continues to enter the organic gas adsorber 2 from the second gas inlet 21, and the filter layer 26 is used for adsorbing the particulate pollution remaining in the exhaust gas after being treated in the previous several steps. And preventing the particulate contaminants from blocking the activated carbon holes of the first activated carbon filter layer 24 and the second activated carbon filter layer 25. The mesh layer 26 may be made of stainless steel or non-woven fabric. After the exhaust gas passes through the filter layer 26, the first activated carbon filter layer 24 and the second activated carbon filter layer 25 are reached, and the first activated carbon filter layer 24 and the second activated carbon filter layer 25 are passed through to the VOCs. And the adsorption force of the odor to reduce the content of VOCs in the exhaust gas outputted from the second gas outlet 22, and simultaneously remove the odor.

In addition, the ozone transported to the organic gas adsorber 2 by the connecting pipe 6 can also decompose the VOCs adsorbed on the first activated carbon filter layer 24 and the second activated carbon filter layer 25, thereby regenerating and purifying the active substances. The carbon filter layers 24, 25 maintain the organic gas adsorber 2 with good VOCs adsorption capacity. Referring back to FIG. 2, the exhaust gas treated by the organic gas adsorber 2, and finally, under the operation of the exhaust motor 4, the exhaust gas is extracted from the organic gas adsorber 2 to the discharge pipe 7, and the treated exhaust gas is removed. The exhaust gas purifying device of the present invention has the ability to remove particulate contaminants, VOCs and odors in the exhaust gas, and the exhaust gas purifying device can be passed through the exhaust gas purifying device to complete the purification process of the industrial exhaust gas.

In summary, the exhaust gas purifying apparatus of the present invention comprises an organic gas adsorber 2 and the ozone generator 3, and the organic gas adsorber 2 is connected to the scrubbing tower 1 to further remove exhaust gas of particulate contaminants by washing, further The first activated carbon filter layer 24 and the second activated carbon filter layer 25 adsorb VOCs and odors in the exhaust gas, and the ozone generated by the ozone generator 3 also contributes to decomposition of VOCs, and the exhaust gas purifying device It can not only remove particulate pollutants in exhaust gas, but also effectively adsorb or decompose VOCs and odors. It is suitable for purifying general industrial combustion exhaust gas, coating process exhaust gas and chemical raw materials to make exhaust gas, etc., and can increase the treatment of the exhaust gas purification device. The type of exhaust gas can further improve the application of the exhaust gas purification device.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧washing tower

1a‧‧‧ top

1b‧‧‧ bottom

11‧‧‧First gas inlet

12‧‧‧First gas export

2‧‧‧Organic gas adsorber

21‧‧‧Second gas inlet

22‧‧‧Second gas outlet

3‧‧‧Ozone generator

321‧‧‧First Ozone Pipe

322‧‧‧Second ozone delivery tube

323‧‧‧ Third Ozone Pipe

33‧‧‧Display control unit

4‧‧‧Exhaust pump

5‧‧‧Exhaust gas inlet pipe

6‧‧‧Connecting tube

61‧‧‧ first end

62‧‧‧ second end

7‧‧‧Drainage tube

71‧‧‧Drainage

Claims (12)

An exhaust gas purification device comprising: a washing tower, a first gas inlet, a first gas outlet and a washing unit, the washing unit being disposed between the first gas inlet and the first gas outlet; An organic gas adsorber connected to the first gas outlet of the scrubbing tower; and an ozone generator for supplying ozone to the organic gas adsorber, wherein the other comprises a connecting pipe, the connecting pipe is provided with a first And a second end, the first end is connected to the first gas outlet of the washing tower, the second end is connected to the organic gas adsorber, and the ozone generator comprises a first ozone conveying pipe, a first ozone delivery pipe is connected to the connecting pipe and adjacent to the second end, so that the ozone generator supplies ozone to the organic gas adsorber, and the ozone generator further comprises a second ozone conveying pipe, the second An ozone delivery tube is coupled to the connecting tube and adjacent the first end. The exhaust gas purifying device according to claim 1, wherein the exhaust gas introducing pipe is connected to the first gas inlet of the washing tower, and the ozone generator further comprises a third An ozone delivery pipe is connected to the exhaust gas introduction pipe and adjacent to the first gas inlet. The exhaust gas purifying device of claim 1, wherein the organic gas adsorber is provided with a second gas inlet, a second gas outlet and a first activated carbon filter layer, the first activated carbon filter layer The system is disposed between the second gas inlet and the second gas outlet. The exhaust gas purifying device of claim 3, wherein the organic gas adsorber further comprises a filter layer disposed between the second gas inlet and the first activated carbon filter layer . The exhaust gas purifying device according to claim 4, wherein the mesh layer is made of stainless steel or non-woven fabric. An exhaust gas purifying device according to claim 5, wherein the organic gas adsorber is The second activated carbon filter layer is disposed between the first activated carbon filter layer and the second gas outlet. The exhaust gas purifying device according to claim 1, wherein the washing tower further comprises at least one demisting member, the demisting member being disposed between the washing unit and the first gas outlet. The exhaust gas purifying device of claim 1, wherein the washing unit comprises a water tank, a pumping pump, a first water pipe and a second water pipe, the water tank is disposed at the bottom of the washing tower. The first water pipe and the second water pipe are in communication with the water tank, and the first water pipe and the second water pipe are in communication with the pumping pump. The exhaust gas purifying device of claim 8, wherein the first gas inlet is disposed at a side of the washing tower near a bottom portion, and the first gas outlet is disposed at a top of the washing tower, the first Each of the water delivery pipe and the second water delivery pipe is provided with a plurality of spray ports, and the plurality of spray ports are disposed in a direction toward the bottom of the washing tower. The exhaust gas purification device of claim 8, wherein the washing tower further comprises a separation filter layer disposed between the first water conduit and the second water conduit. The exhaust gas purifying device according to claim 1, wherein the exhaust gas purging device and the exhaust pipe are connected to the organic gas adsorber and the discharge pipe. The exhaust gas purifying device according to claim 2, wherein the ozone generator has a pure oxygen machine and a plasma generating unit, the pure oxygen machine is connected to the plasma generating unit, and the plasma is The generating unit is connected to the first ozone conveying pipe, the second ozone conveying pipe and the third ozone conveying pipe.