CN211411579U - An industrial organic waste gas treatment system - Google Patents

Abstract

The utility model discloses an industrial organic waste gas treatment system, which comprises a heat exchanger, a first physical adsorption device, a liquid adsorption device, a dryer, a second physical adsorption device, a chimney and a gas monitoring device arranged in sequence along the airflow direction. The utility model first recovers the waste heat through the heat exchanger, then uses the first physical adsorption device for preliminary filtering and purification, and then further removes the pollutants in the waste gas through the liquid adsorption device, then enters the dryer for drying, and finally passes through the second physical adsorption device. Carry out physical adsorption to deeply purify the exhaust gas to ensure the discharge of clean exhaust gas. The liquid adsorption device of the utility model utilizes the adsorption liquid to adsorb a large amount of harmful organic matter in the waste gas, which can greatly improve the waste gas treatment effect. The utility model can monitor the content of the main harmful organic substances in the exhaust gas entering the system and the exhaust gas discharged from the system by arranging a gas monitoring device.

Description

An industrial organic waste gas treatment system

technical field

The utility model relates to the technical field of waste gas treatment, in particular to an industrial organic waste gas treatment system.

Background technique

At present, with the rapid development of industrialization, a large amount of organic industrial waste gas is inevitably generated, which will not only affect the normal production of factories, but also cause serious pollution to the environment. Therefore, how to effectively reduce the pollution caused by industrial waste gas has become a problems that urgently need to be solved.

VOC (Volatile Organic Compound, volatile organic compound) refers to the general term for volatile organic compounds at room temperature, which are used in the production and production of petrochemical, pharmaceutical, paint, coating, electronic manufacturing, surface anticorrosion, shoemaking, printing and transportation industries. During use, a large amount of VOC waste gas will be generated. VOC waste gas contains formaldehyde, xylene, toluene, acetone, methyl ethyl ketone, halogen compounds, etc. Most of these compounds have irritating odors, which not only have a great impact on air quality, but also cause harm to human health through direct contact, and VOC The flammable characteristics of exhaust gas also pose a safety hazard. Commonly used exhaust gas purification methods are: absorption method, adsorption method, condensation method and combustion method. Some of the existing exhaust gas treatment systems use a single method for treatment, but often have the problem that the exhaust gas treatment effect is not up to standard and cannot meet the emission demand; some use multiple methods for joint treatment, but often the system structure is complex and the treatment efficiency is low. And other issues.

Utility model content

The technical problem to be solved by the utility model is to provide an industrial organic waste gas treatment system aiming at the above-mentioned deficiencies in the prior art.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is: an industrial organic waste gas treatment system, comprising a heat exchanger, a first physical adsorption device, a liquid adsorption device, a dryer, a second physical adsorption device arranged in sequence along the airflow direction. Adsorption devices, chimneys and gas monitoring devices;

The liquid adsorption device comprises a horizontal cylindrical reaction tank, an impeller mechanism disposed in the cylindrical reaction tank and rotatable around the central axis of the cylindrical reaction tank, and an adsorption liquid circulation mechanism connected to the cylindrical reaction tank ;

The adsorption liquid circulation mechanism includes a sedimentation tank connected with the columnar reaction tank through a discharge pipeline, an oxidation device connected with the sedimentation tank, and a buffer tank connected with the oxidation device, and the buffer tank is connected through a feed pipeline. communicated with the columnar reaction tank.

Preferably, the end of the feed pipe is connected with a distribution pipe, the distribution pipe is arranged in the columnar reaction tank, and the pipe wall of the distribution pipe is provided with a number of liquid outlet holes;

The discharge pipe is communicated with the adsorption liquid discharge port opened on the columnar reaction tank, and the feed pipe is communicated with the adsorption liquid inlet opened on the columnar reaction tank;

The discharge pipe is provided with a discharge pump, and the feed pipe is provided with a feed pump.

Preferably, a main air inlet is arranged at the air inlet end of the cylindrical reaction tank along the axial direction, and a secondary air inlet is arranged on the side wall along the radial direction; the auxiliary air inlet is arranged along the columnar reaction The outer periphery of the tank is arranged tangentially, which is perpendicular to the arrangement direction of the main air inlet;

A part of the exhaust gas entering the system enters the columnar reaction tank through the main air inlet pipe through the main air inlet, and the other part enters the columnar reaction tank through the auxiliary air inlet pipe through the auxiliary air inlet.

Preferably, the impeller mechanism includes a rotating shaft rotatably disposed in the cylindrical reaction tank and parallel to the central axis of the cylindrical reaction tank, and an adsorption impeller disposed on the rotating shaft;

The adsorption impeller includes a runner fixed on the rotating shaft and a plurality of impeller blades arranged on the runner at regular intervals.

Preferably, the adsorption impellers are sequentially arranged in four groups on the rotating shaft along the airflow direction: a first adsorption impeller, a second adsorption impeller, a third adsorption impeller and a fourth adsorption impeller.

The outer end of the impeller blade of the first adsorption impeller is also connected with a driving plate; the driving plate is provided with a groove, and the opening direction of the groove faces the air intake direction of the auxiliary air inlet, so as to pass through the auxiliary air inlet. The air flow of the auxiliary air inlet drives the driving plate to rotate, thereby driving the rotating shaft and other adsorption impellers on the rotating shaft to rotate together in the cylindrical reaction tank.

Preferably, the thickness of the impeller blade gradually increases from the connecting end of the impeller blade and the runner to the outer end;

The impeller blades are densely provided with ventilation micro-holes that pass through along the thickness direction thereof; the ventilation micro-holes are conical holes, and their diameters gradually decrease along the airflow direction;

Both sides of the impeller blade along the airflow direction are provided with long guide grooves, and the long guide grooves are arranged along the radial direction of the impeller blade;

Both sides of the impeller sheet along the airflow direction are covered with filter membranes.

Preferably, a first annular baffle, a second annular baffle, a third annular baffle and a fourth annular baffle are sequentially arranged on the upper half of the inner wall of the cylindrical reaction tank along the airflow direction; The annular baffle, the second annular baffle, the third annular baffle and the fourth annular baffle are respectively arranged at the front ends of the first adsorption impeller, the second adsorption impeller, the third adsorption impeller and the fourth adsorption impeller along the airflow direction .

Preferably, the first physical adsorption device includes a first shell and activated carbon filled in the first shell;

The second physical adsorption device includes a second shell, two M-shaped splints fixed in the second interior, a filter layer arranged between the two M-shaped splints, and a lower end respectively opened on the second shell. and the gas inlet and gas outlet at the upper end;

The M-shaped splint is provided with ventilation holes;

The filter layer includes a nylon layer, a polypropylene fiber layer, a glass fiber layer, a PTFE fiber layer and a polyphenylene sulfide fiber layer that are sequentially stacked from bottom to top.

Preferably, the gas monitoring device includes a first gas detection component provided at the inlet end of the first physical adsorption device and a second gas detection component provided at the gas outlet end of the second physical adsorption device components.

Preferably, the exhaust gas enters the system through the first gas transmission pipeline, the heat exchanger and the first physical adsorption device are sequentially arranged on the first gas transmission pipeline along the airflow direction, and the first gas transmission pipeline is also provided with the first fan;

An exhaust gas outlet is also provided on the radial side wall of the cylindrical reaction tank, and the exhaust gas discharged from the cylindrical reaction tank is transported to the second physical adsorption device through the exhaust gas outlet through the second gas pipeline. The second gas pipeline is also provided with a second fan;

The exhaust gas discharged from the second physical adsorption device is transported to the chimney through a third gas pipeline.

The beneficial effects of the present utility model are as follows: the industrial organic waste gas treatment system of the present utility model firstly recovers the waste heat through the heat exchanger, then uses the first physical adsorption device to perform preliminary filtering and purification, and then uses the liquid adsorption device to further remove the pollutants in the waste gas. , and then enter the dryer for drying, and finally carry out physical adsorption through the second physical adsorption device to deeply purify the exhaust gas to ensure the discharge of clean exhaust gas.

The liquid adsorption device of the utility model utilizes the adsorption liquid to adsorb a large amount of harmful organic matter in the exhaust gas, and drives the adsorption impeller mechanism and the rotating shaft to rotate by introducing the airflow in the direction of the swirling flow, so that a driving mechanism is omitted, energy consumption is saved, and equipment is simplified; The adsorption impeller mechanism rotates continuously, so that the impeller blades can continuously adsorb the adsorption liquid in the columnar reaction tank, ensuring the continuous replenishment and replacement of the adsorption liquid on the impeller blades, and ensuring the effect of the adsorption liquid on the impeller blades; The exhaust gas and the adsorption liquid on the impeller are fully collided and contacted, which can greatly improve the exhaust gas treatment effect.

The second physical adsorption device of the present utility model can effectively filter the exhaust gas and realize the effective purification of the exhaust gas by setting the multi-layer filtering structure.

The utility model can monitor the content of the main harmful organic substances in the exhaust gas entering the system and the exhaust gas discharged from the system by setting the gas monitoring device.

The utility model combines adsorption liquid adsorption and physical adsorption device adsorption means, which can improve the waste gas treatment effect of the system, and the utility model has the advantages of simple structure, low energy consumption and low treatment cost.

Description of drawings

Fig. 1 is the structural representation of the industrial organic waste gas treatment system of the present invention;

Fig. 2 is the structural representation of the liquid adsorption device of the present invention;

3 is a schematic structural diagram of the first adsorption impeller of the present invention;

Fig. 4 is the structural representation of the distribution pipe of the present invention;

5 is a cross-sectional structural schematic diagram of a drive plate of the present invention;

Fig. 6 is the sectional structure schematic diagram of the impeller blade of the present invention;

7 is a schematic structural diagram of a second adsorption impeller in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of the physical adsorption device of the present invention.

Description of reference numbers:

1—heat exchanger;

2—the first physical adsorption device; 20—the first shell; 21—the activated carbon;

3—Liquid adsorption device; 30—Columnar reaction tank; 31—Impeller mechanism; 32—Adsorption liquid circulation mechanism; 33—Rotating shaft; 34—Adsorption impeller; 35—First adsorption impeller; 36—Second adsorption impeller; Three adsorption impellers; 38—fourth adsorption impeller; 39—drive plate; 300—main air inlet; 301—secondary air inlet; 302—exhaust gas outlet; 303—first annular baffle; 304—second annular baffle 305—the third annular baffle; 306—the fourth annular baffle; 307—the adsorption liquid inlet; 308—the adsorption liquid discharge port; 320—the discharge pipe; 321—the sedimentation tank; 324—feeding pipeline; 325—distributing pipe; 326—liquid outlet; 327—discharge pump; 328—feeding pump; 340—runner; 341—impeller blade; Long groove; 344—filter membrane; 390—groove;

4—dryer;

5—Second physical adsorption device; 50—Second shell; 51—M-type splint; 52—Filter layer; 53—Gas inlet; 54—Gas outlet; 520—Nylon layer; 521—Polypropylene fiber layer; 522—Glass Fiber layer; 523—PTFE fiber layer; 524—Polyphenylene sulfide fiber layer;

6—chimney;

70—the first gas detection component; 71—the second gas detection component;

80—first gas pipeline; 81—main intake pipeline; 82—secondary intake pipeline; 83—second gas pipeline; 84—third gas pipeline; 85—first fan; 86—second fan; 87—the first solenoid valve; 88—the second solenoid valve; 89—the third solenoid valve.

Detailed ways

The present utility model will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

As shown in Figures 1-7, an industrial organic waste gas treatment system in this embodiment includes a heat exchanger 1, a first physical adsorption device 2, a liquid adsorption device 3, a dryer 4, a second Physical adsorption device 5, chimney 6 and gas monitoring device;

After the industrial organic waste gas enters the system, it first recovers the waste heat through the heat exchanger 1 to save energy, and then enters the first physical adsorption device 2 for preliminary filtering and purification, and then enters the liquid adsorption device 3 to further remove the pollutants in the exhaust gas, and then enters the drying process. The device 4 is dried, and finally the second physical adsorption device 5 is used for physical adsorption to deeply purify the exhaust gas to ensure the discharge of clean exhaust gas. The gas monitoring device is mainly used to monitor the content of the main harmful organic compounds in the exhaust gas entering the system and the exhaust gas discharged from the system.

In this embodiment, the liquid adsorption device 3 includes a horizontal cylindrical reaction tank 30 , an impeller mechanism 31 disposed in the cylindrical reaction tank 30 and rotatable around the central axis of the cylindrical reaction tank 30 , and an adsorption device connected to the cylindrical reaction tank 30 . Liquid circulation mechanism 32 ; the exhaust gas passes through the impeller mechanism 31 in the axial direction, and the liquid adsorption device 3 repeatedly impregnates the adsorption liquid through the impeller mechanism 31 , thereby absorbing pollutants in the exhaust gas passing through the impeller mechanism 31 . The columnar reaction tank 30 contains the adsorption liquid.

The main air inlet 300 is provided at the air inlet end of the cylindrical reaction tank 30 along the axial direction, and the auxiliary air inlet 301 is provided on the side wall along the radial direction; The periphery is arranged tangentially, which is perpendicular to the setting direction of the main air inlet 300; part of the exhaust gas entering the system enters the columnar reaction tank 30 through the main air inlet 81 through the main air inlet 300, and the other part passes through the auxiliary air inlet duct 82 enters the cylindrical reaction tank 30 through the auxiliary air inlet 301 .

The impeller mechanism 31 includes a rotating shaft 33 rotatably disposed in the cylindrical reaction tank 30 and parallel to the central axis of the cylindrical reaction tank 30 and an adsorption impeller disposed on the rotating shaft 33; the cylindrical reaction tank 30 contains adsorption liquid, and preferably In this embodiment, the liquid level of the adsorption liquid is lower than the height of the rotating shaft 33, and the adsorption liquid does not flood the rotating shaft 33, so as to reduce the corrosion of the rotating shaft 33. The rotating shaft 33 and the adsorption impeller mechanism 31 are made of corrosion-resistant materials from the prior art, either plastic or metal.

The adsorption impeller 34 includes a runner 340 fixed on the rotating shaft 33 and a plurality of impeller blades 341 arranged on the runner 340 at regular intervals. In a preferred embodiment, four groups of adsorption impellers are sequentially arranged on the rotating shaft 33 along the airflow direction: a first adsorption impeller 35 , a second adsorption impeller 36 , a third adsorption impeller 37 and a fourth adsorption impeller 38 .

The outer end of the impeller blade 341 of the first adsorption impeller 35 is also connected with a drive plate 39; the drive plate 39 is provided with a groove 390, and the opening direction of the groove 390 faces the air intake direction of the auxiliary air inlet 301, so as to pass the auxiliary air inlet 301. The air flow of the air inlet 301 drives the driving plate 39 to rotate, thereby driving the rotating shaft 33 and other adsorption impellers on the rotating shaft 33 to rotate together in the cylindrical reaction tank 30 . There is no driving plate 39 on the second adsorption impeller 36 , the third adsorption impeller 37 and the fourth adsorption impeller 38 , the length of the impeller blades 341 is slightly longer, and the rest of the structure is the same as that of the first adsorption impeller 35 .

In this embodiment, the adsorption impeller mechanism 31 and the rotating shaft 33 are driven to rotate by the air flow of the auxiliary air intake duct 82 , which makes full use of the power of other flows, saves a driving mechanism, saves energy consumption, and simplifies the equipment. The air flow in the auxiliary air inlet pipe 82 enters tangentially along the periphery of the cylindrical reaction tank 30, and is the air flow in the rotation direction. The impeller 35 rotates around the axis of the cylindrical reaction tank 30 and drives the rotating shaft 33 to rotate together, so that other adsorption impellers on the rotating shaft 33 also rotate together. The adsorption impeller rotates continuously, so that the impeller blade 341 can continuously adsorb the adsorption liquid in the cylindrical reaction tank 30, so as to ensure the continuous replenishment and replacement of the adsorption liquid on the impeller blade 341, and prevent the adsorption liquid on the impeller blade 341 from absorbing too much waste gas and appearing saturated. phenomenon, to ensure the effect of the adsorption liquid on the impeller blade 341. The air flow of the main air inlet duct 81 flows from left to right along the axial direction of the cylindrical reaction tank 30 , and the air passes through the pores on the impeller blade 341 to filter harmful substances. The transverse airflow (airflow in the main intake duct 81 ) and the circumferential swirling flow (airflow in the auxiliary intake duct 82 ) are combined to make the exhaust gas swirl forward through the impeller blade 341 , so that the exhaust gas can fully collide and contact the adsorption liquid on the impeller blade 341 , which can greatly improve the exhaust gas treatment effect. Referring to FIG. 5 , it is a front view of the impeller blade 341 and the drive plate 39 cut away in the thickness direction. Referring to FIG. 6 , it is a side view of the impeller blade 341 cut away in the thickness direction.

The thickness of the impeller blade 341 gradually increases from the connection end between the impeller blade 341 and the runner 340 to the outer end;

The effect of the swirl flow, the closer to the middle of the axis, the smaller the airflow density, the greater the airflow density at both ends, and the more pollutants. The greater the thickness of the impeller blade 341, the stronger the adsorption effect on pollutants. Therefore, the adsorption efficiency and effect of the impeller blade 341 can be improved.

The impeller blade 341 is densely provided with ventilation micro-holes 342 that pass through along its thickness direction; the ventilation micro-holes 342 are conical holes whose diameter gradually decreases along the airflow direction; the gas moves from the large-diameter end to the small-diameter end (from left to right). ), the air flow rate will increase, which can increase the flow rate compared to the cylindrical hole.

Both sides of the impeller blade 341 along the airflow direction are provided with long guide grooves 343, and the guide long grooves 343 are arranged along the radial direction of the impeller blade 341;

Both sides of the impeller blade 341 along the airflow direction are covered with filter membranes 344 . In order to keep the rotating shaft 33 in the adsorption liquid to reduce corrosion, when the impeller blade 341 is immersed in the adsorption liquid, the part of the impeller blade 341 close to the runner 340 cannot be immersed in the adsorption liquid. By setting the long diversion groove 343, when the impeller blade 341 rotates, the adsorption liquid at the outer end of the impeller blade 341 can be promoted to flow to the inner end of the impeller blade 341 (the part close to the runner 340), so that the entire impeller blade 341 is evenly filled with the adsorption liquid. Improve the exhaust gas treatment effect. Both sides of the impeller blade 341 along the airflow direction are covered with filter membranes 344 . The filter membrane 344 can promote the exhaust gas to be fully contacted with the adsorption liquid, and can also produce a filtering effect on the exhaust gas. The filter membrane 344 can be a carbon fiber filter membrane 344 or other corrosion-resistant filter membranes 344 .

Wherein, the inner wall of the cylindrical reaction tank 30 is sequentially provided with a first annular baffle 303, a second annular baffle 304, a third annular baffle 305 and a fourth annular baffle 306 along the airflow direction; and the first annular baffle 303 , the second annular baffle 304, the third annular baffle 305, and the fourth annular baffle 306 are respectively arranged on the first adsorption impeller 35, the second adsorption impeller 36, the third adsorption impeller 37 and the fourth adsorption impeller 38 along the airflow direction Front end. The ring width of the first annular baffle 303 is larger than the distance between the outer end of the drive plate 39 and the inner wall of the cylindrical reaction tank 30; the ring widths of the remaining second, third and fourth annular baffles 306 are all larger than their corresponding positions The distance between the outer end of the impeller blade 341 and the inner wall of the columnar reaction tank 30 ensures the blocking effect on the airflow and prevents the exhaust gas from being directly filtered from the outer end of the impeller blade 341 and the inner wall of the columnar reaction tank 30 without being filtered by the impeller blade 341 The gap between them passes through to ensure the exhaust gas treatment effect.

In a preferred embodiment, the number of impeller blades 341 on the first adsorption impeller 35 , the second adsorption impeller 36 , the third adsorption impeller 37 and the fourth adsorption impeller 38 are 3, 4, 6 and 8 in sequence. , are evenly spaced apart ( FIG. 7 shows the structure diagram of the second adsorption impeller 36 ). Within a certain range, the larger the number of impeller blades 341, the better the adsorption effect. The first adsorption impeller 35, the second adsorption impeller 36, the third adsorption impeller 37 and the fourth adsorption impeller 38 rotate together, so that the first adsorption impeller 35 The waste gas treatment effects of the second adsorption impeller 36, the third adsorption impeller 37 and the fourth adsorption impeller 38 are sequentially enhanced, and the waste gas is processed in layers by the four groups of impeller blades 341, and the adsorption effect on pollutants in the waste gas is getting stronger and stronger. , which can greatly improve the adsorption effect of harmful substances in the exhaust gas.

In the above-mentioned embodiments, the adsorption liquid may be selected from a reagent commonly used in the field, such as acid liquid or alkali liquid. For example: sodium hydroxide solution, ammonia water, sodium hypochlorite, diethylpropanolamine, etc. Those skilled in the art can select from the existing adsorption liquids according to the specific components of the main pollutants in the exhaust gas, which are not specifically limited in the present invention.

The adsorption liquid circulation mechanism 32 includes a sedimentation tank 321 connected with the columnar reaction tank 30 through a discharge pipeline 320, an oxidation device 322 connected with the sedimentation tank 321, and a buffer tank 323 connected with the oxidation device 322. The buffer tank 323 passes through the feed pipeline 324. It communicates with the columnar reaction tank 30 . The end of the feed pipe 324 is connected with a distribution pipe 325, the distribution pipe 325 is arranged in the cylindrical reaction tank 30, and the pipe wall of the distribution pipe 325 is provided with a number of liquid outlet holes 326; The adsorption liquid discharge port 308 is connected, and the feed pipe 324 is connected with the adsorption liquid inlet 307 opened on the columnar reaction tank 30 ; The adsorption liquid circulation mechanism 32 is used to discharge and regenerate the used adsorption liquid, and then re-transmit the regenerated adsorption liquid to the columnar reaction tank 30 . A liquid outlet hole 326 is provided on the feed pipe 324 to facilitate the uniform entry of the adsorption liquid into the columnar reaction tank 30 . Among them, the oxidation device 322 is an iron-carbon micro-electrolysis reaction tower or a Fenton oxidation tower. Both the iron-carbon micro-electrolysis reaction tower and the Fenton oxidation tower are advanced oxidation, which can oxidize and decompose the refractory organic substances in the adsorption liquid. For inorganic substances such as carbon dioxide and water, it completely eliminates environmental pollution.

Specifically: after the adsorption liquid in the columnar reaction tank 30 adsorbs and treats a large amount of waste gas, a large amount of waste will be generated, and the adsorption liquid in the adsorption liquid will tend to be saturated with adsorption, and the adsorption effect on the pollutants in the exhaust gas will be significantly reduced. The adsorption liquid is discharged and replaced with a new adsorption liquid. At this time, the adsorption liquid is discharged to the sedimentation tank 321 through the discharge pipe 320 for sedimentation, and the overflow enters the oxidation device 322. A large amount of harmful organic substances in the adsorption liquid are decomposed into inorganic substances such as carbon dioxide and water, and the treated adsorption liquid can be regenerated. In use, the regeneration of the adsorption liquid is realized, and the regenerated adsorption liquid enters the buffer tank 323 for storage, and finally enters the columnar reaction tank 30 through the feeding pipeline 324 for reuse. The underflow sludge in the sedimentation tank 321 can enter the sludge thickening tank for processing, and finally obtain a sludge cake. The organic pollutants can be decomposed into inorganic substances by the adsorption liquid circulation mechanism 32 without secondary pollution, and the recycling and regeneration of the adsorption liquid can also be realized, which saves the processing cost.

The first physical adsorption device 2 includes a first shell 20 and activated carbon 21 filled in the first shell 20; the activated carbon 21 has a good adsorption effect, and can perform preliminary treatment on the exhaust gas to remove a large amount of particulate matter and pollutants therein.

The second physical adsorption device 5 includes a second housing 50 , two M-shaped splints 51 fixed in the second interior, a filter layer 52 disposed between the two M-shaped splints 51 , and a lower end and an upper end respectively opened on the second housing 50 The gas inlet 53 and the gas outlet 54;

The M-type splint 51 is provided with ventilation holes;

The filter layer 52 includes a nylon layer 520 , a polypropylene fiber layer 521 , a glass fiber layer 522 , a PTFE fiber layer 523 and a polyphenylene sulfide fiber layer 524 which are sequentially stacked from bottom to top.

The second physical adsorption device 5 mainly performs deep filtration on the incoming gas through the filter layer 52 to ensure the final discharge of clean gas. By arranging the M-shaped splint 51, each filter layer 52 is stacked in an M-shaped manner, and the M-shaped surface can increase the effective filtering area and improve the purification effect relative to the plane. Nylon layer 520 provides outer protection. The polypropylene fiber layer 521 has a porous structure, which has excellent adsorption effect, high adsorption rate, and good mechanical properties and corrosion resistance; the glass fiber layer 522 has a good adsorption effect on most organic and inorganic substances, and mechanical It has high strength, and also has good weather resistance and corrosion resistance. Setting it in the inner layer can significantly improve the strength of the filter layer 52 and prolong its service life. The PTFE fiber layer 523 has excellent adsorption properties and good mechanical properties, and can absorb a large amount of harmful substances. The polyphenylene sulfide fiber layer 524 has high porosity, large dirt holding capacity, good pressure resistance, and can perform deep filtration. The utility model can effectively filter the exhaust gas and realize the effective purification of the exhaust gas through the multi-layer filtering structure arranged in sequence.

The exhaust gas enters the system through the first gas transmission pipeline 80. The heat exchanger 1 and the first physical adsorption device 2 are sequentially arranged on the first gas transmission pipeline 80 along the airflow direction. The first gas transmission pipeline 80 is also provided with a first fan 85;

A waste gas outlet 302 is also provided on the side wall of the cylindrical reaction tank 30 along the radial direction, and the exhaust gas discharged from the cylindrical reaction tank 30 is transported to the second physical adsorption device 5 through the exhaust gas outlet 302 through the second gas pipeline 83, and the second gas pipeline 83 is also provided with a second fan 86;

The exhaust gas discharged from the second physical adsorption device 5 is transported to the chimney 6 through the third gas pipeline 84 .

In a further preferred embodiment, the gas monitoring device includes a first gas detection component 70 disposed at the inlet end of the first physical adsorption device 2 and a second gas disposed at the gas outlet end of the second physical adsorption device 5 Detection assembly 71 . The first gas detection component 70 and the second gas detection component 71 are used to detect the content of the main harmful organic compounds in the exhaust gas entering the system and the exhaust gas discharged from the system, so as to understand the feeding situation of the system and whether the final exhaust gas meets the standard . The two gas detection components are integrated with multiple gas sensors for detecting the content of various gases. In this embodiment, the three gas detection components are integrated with formaldehyde sensors, xylene sensors, toluene sensors, acetone sensors, and methyl ethyl ketone. Sensor; used to detect formaldehyde, xylene, toluene, acetone, butanone. The gas detection component can be selected from sensors with corresponding functions in the prior art, and the specific model can be selected according to the actual situation, which does not need to be limited in the present invention. Of course, for different compositions of source exhaust gas, sensors with different types of gas detection functions can be integrated and selected, and the technicians in the field can choose according to the actual situation.

Among them, the system also includes a controller (using a conventional controller in the field or using a computer control) and a display, the two gas detection components are connected to the display and the controller (wireless or wired), and the display can display the two gas detection components The respective test results are available for users to obtain. A first solenoid valve 87 is provided on the auxiliary intake pipe 82, a second solenoid valve 88 is provided on the discharge pipe 320, and a third solenoid valve 89 is provided on the feed pipe 324. The first solenoid valve 87 can be controlled by the controller. , the second solenoid valve 88 and the third solenoid valve 89 are controlled. The first solenoid valve 87 can control the flow rate of the exhaust gas entering the auxiliary intake pipe 82 , and the second solenoid valve 88 and the third solenoid valve 89 can control the discharge and feed of the absorbing liquid. The controller is also connected with the first fan 85 , the second fan 86 , the feed pump 328 and the discharge pump 327 , and each fan and pump can be controlled (switch, power, etc.) through the controller. A control panel can be provided on the controller for manual control.

The working process of the system is as follows: the industrial organic waste gas enters through the first gas transmission pipeline 80, and under the action of the first fan 85, the waste heat is recovered by the heat exchanger 1, and the first physical adsorption device 2 is preliminarily filtered and processed; then the waste gas is divided into two parts part, one part enters the cylindrical reaction tank 30 through the main air inlet 81 through the main air inlet 300, and the other part enters the cylindrical reaction tank 30 through the auxiliary air inlet 82 through the auxiliary air inlet 301; under the action of the second fan 86, the cylindrical reaction tank 30 The exhaust gas of the reaction tank 30 is transported to the second physical adsorption device 5 through the second gas transmission pipeline 83 through the exhaust gas outlet 302 for further filtering treatment; finally, the clean exhaust gas discharged from the second physical adsorption device 5 passes through the third gas transmission pipeline 84 It is transported to the chimney 6, and then discharged to the outside.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the description and the embodiments, and can be applied to various fields suitable for the present invention. For those skilled in the art, Additional modifications may readily be implemented, therefore, the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims (10)

1. an industrial organic waste gas treatment system, is characterized in that, comprises the heat exchanger, the first physical adsorption device, the liquid adsorption device, the dryer, the second physical adsorption device, the chimney and the gas monitoring device that are arranged successively along the airflow direction; The liquid adsorption device comprises a horizontal cylindrical reaction tank, an impeller mechanism disposed in the cylindrical reaction tank and rotatable around the central axis of the cylindrical reaction tank, and an adsorption liquid circulation mechanism connected to the cylindrical reaction tank ; The adsorption liquid circulation mechanism includes a sedimentation tank connected with the columnar reaction tank through a discharge pipeline, an oxidation device connected with the sedimentation tank, and a buffer tank connected with the oxidation device, and the buffer tank is connected through a feed pipeline. communicated with the columnar reaction tank. 2 . The industrial organic waste gas treatment system according to claim 1 , wherein a distribution pipe is connected to the end of the feed pipe, the distribution pipe is arranged in the columnar reaction tank, and the pipe of the distribution pipe A number of liquid outlet holes are opened on the wall; The discharge pipe is communicated with the adsorption liquid discharge port opened on the columnar reaction tank, and the feed pipe is communicated with the adsorption liquid inlet opened on the columnar reaction tank; The discharge pipe is provided with a discharge pump, and the feed pipe is provided with a feed pump. 3 . The industrial organic waste gas treatment system according to claim 1 , wherein a main air inlet is arranged at the air inlet end of the cylindrical reaction tank along the axial direction, and a secondary air inlet is arranged on the side wall along the radial direction. 4 . an air inlet; the auxiliary air inlet is arranged tangentially along the outer periphery of the cylindrical reaction tank, which is perpendicular to the setting direction of the main air inlet; A part of the exhaust gas entering the system enters the columnar reaction tank through the main air inlet pipe through the main air inlet, and the other part enters the columnar reaction tank through the auxiliary air inlet pipe through the auxiliary air inlet. 4 . The industrial organic waste gas treatment system according to claim 3 , wherein the impeller mechanism comprises a rotating shaft rotatably disposed in the cylindrical reaction tank and parallel to the central axis of the cylindrical reaction tank and a rotating shaft disposed in the cylindrical reaction tank. 5 . an adsorption impeller on the rotating shaft; The adsorption impeller includes a runner fixed on the rotating shaft and a plurality of impeller blades arranged on the runner at regular intervals. 5 . The industrial organic waste gas treatment system according to claim 4 , wherein the adsorption impellers are sequentially arranged in four groups on the rotating shaft along the airflow direction: a first adsorption impeller, a second adsorption impeller, and a third adsorption impeller. 6 . impeller and fourth adsorption impeller; The outer end of the impeller blade of the first adsorption impeller is also connected with a driving plate; the driving plate is provided with a groove, and the opening direction of the groove faces the air intake direction of the auxiliary air inlet, so as to pass through the auxiliary air inlet. The air flow of the auxiliary air inlet drives the driving plate to rotate, thereby driving the rotating shaft and the second to fourth adsorption impellers on the rotating shaft to rotate together in the cylindrical reaction tank. 6. The industrial organic waste gas treatment system according to claim 5, wherein the thickness of the impeller blade gradually increases from the connecting end of the impeller blade and the runner to the outer end; The impeller blades are densely provided with ventilation micro-holes that pass through along the thickness direction thereof; the ventilation micro-holes are conical holes, and their diameters gradually decrease along the airflow direction; Both sides of the impeller blade along the airflow direction are provided with long guide grooves, and the long guide grooves are arranged along the radial direction of the impeller blade; Both sides of the impeller sheet along the airflow direction are covered with filter membranes. 7. The industrial organic waste gas treatment system according to claim 5, wherein the upper half of the inner wall of the cylindrical reaction tank is sequentially provided with a first annular baffle, a second annular baffle, a third annular baffle along the airflow direction annular baffle plate and fourth annular baffle plate; and the first annular baffle plate, the second annular baffle plate, the third annular baffle plate, and the fourth annular baffle plate are respectively arranged on the first adsorption impeller, the first annular baffle plate and the fourth annular baffle plate along the airflow direction. The front ends of the second adsorption impeller, the third adsorption impeller and the fourth adsorption impeller. 8. The industrial organic waste gas treatment system according to claim 1, wherein the first physical adsorption device comprises a first shell and activated carbon filled in the first shell; The second physical adsorption device includes a second shell, two M-shaped splints fixed in the second interior, a filter layer arranged between the two M-shaped splints, and a lower end respectively opened on the second shell. and the gas inlet and gas outlet at the upper end; The M-shaped splint is provided with ventilation holes; The filter layer includes a nylon layer, a polypropylene fiber layer, a glass fiber layer, a PTFE fiber layer and a polyphenylene sulfide fiber layer that are sequentially stacked from bottom to top. 9 . The industrial organic waste gas treatment system according to claim 1 , wherein the gas monitoring device comprises a first gas detection component arranged at the inlet end of the first physical adsorption device and a first gas detection component arranged at the The second gas detection component at the gas outlet end on the second physical adsorption device. 10. The industrial organic waste gas treatment system according to claim 7, wherein the waste gas enters the system through the first gas transmission pipeline, and the heat exchanger and the first physical adsorption device are sequentially arranged in the first transmission line along the airflow direction. On the gas pipeline, the first gas pipeline is also provided with a first fan; An exhaust gas outlet is also provided on the radial side wall of the cylindrical reaction tank, and the exhaust gas discharged from the cylindrical reaction tank is transported to the second physical adsorption device through the exhaust gas outlet through the second gas pipeline. The second gas pipeline is also provided with a second fan; The exhaust gas discharged from the second physical adsorption device is transported to the chimney through a third gas pipeline.

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