CN211411580U - VOC exhaust treatment system - Google Patents
VOC exhaust treatment system Download PDFInfo
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- CN211411580U CN211411580U CN201921533336.9U CN201921533336U CN211411580U CN 211411580 U CN211411580 U CN 211411580U CN 201921533336 U CN201921533336 U CN 201921533336U CN 211411580 U CN211411580 U CN 211411580U
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Abstract
The utility model discloses a VOC exhaust-gas treatment system, include liquid adsorption equipment, waste gas washing tower device, physical adsorption device and the on-line monitoring device that sets gradually along the air current direction. The utility model discloses a VOC exhaust-gas treatment system handles waste gas in proper order through combining liquid adsorption device, exhaust gas washing tower device and physical adsorption device, can guarantee the treatment effect of waste gas, discharges out clean gas. The utility model discloses a liquid adsorption device utilizes the absorption liquid to adsorb a large amount of harmful organic matters in the waste gas, and the air current through introducing the whirl direction drives and adsorbs impeller mechanism, pivot and rotates, has saved a actuating mechanism, has practiced thrift the energy consumption, and has simplified equipment. The utility model discloses a set up on-line monitoring device for the content of the main harmful substance in the gas to a plurality of operation district section detects, whether the operating condition of monitoring system and final combustion gas are up to standard.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, in particular to VOC exhaust-gas treatment system.
Background
VOC (Volatile Organic Compound) is a general name of Volatile Organic compounds at normal temperature, and a large amount of VOC exhaust gas is generated in the production and use processes in the industries of petrochemical industry, pharmacy, paint, coating, electronic manufacturing, surface anticorrosion, shoe manufacturing, printing, transportation and the like. The VOC waste gas contains formaldehyde, dimethylbenzene, methylbenzene, acetone, butanone, halogen compounds and the like, most of the compounds have pungent smell, the air quality is greatly influenced, the harm to human health can be caused by direct contact, and potential safety hazard is caused by the characteristic of inflammability of the VOC waste gas. Common methods for exhaust gas purification are: absorption, adsorption, condensation, and combustion. The adsorption method has the advantages of low cost, simple system structure and the like, and is generally applied. Usually comprises spraying and adsorbing acid and alkali liquid medicine or physically adsorbing by adopting a filter substance. The existing waste gas treatment system usually adopts a single means to treat, and the problem that the waste gas treatment effect is not up to standard often exists, so that the emission requirement can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a VOC exhaust-gas treatment system.
In order to solve the technical problem, the utility model discloses a technical scheme is: a VOC waste gas treatment system comprises a liquid adsorption device, a waste gas washing tower device, a physical adsorption device and an online monitoring device which are sequentially arranged along the direction of an air flow;
the liquid adsorption device comprises a columnar liquid containing tank which is horizontally arranged, a rotating shaft which is rotatably arranged in the columnar liquid containing tank and is parallel to the central axis of the columnar liquid containing tank, and an adsorption impeller mechanism arranged on the rotating shaft;
the air inlet end part of the columnar liquid containing tank along the axial direction is provided with a main air inlet, and the side wall of the columnar liquid containing tank along the radial direction is provided with an auxiliary air inlet; the auxiliary air inlet is tangentially arranged along the periphery of the air inlet end part of the columnar liquid containing tank and is vertical to the arrangement direction of the main air inlet;
the adsorption impeller mechanism comprises a first adsorption impeller component, and the first adsorption impeller component comprises a rotating wheel fixedly connected on the rotating shaft, a plurality of impeller blades uniformly arranged on the rotating wheel at intervals and a driving plate connected to the end parts of the impeller blades; the driving plate is provided with a groove, the opening direction of the groove faces the air inlet direction of the auxiliary air inlet, so that the driving plate is driven to rotate by the airflow of the auxiliary air inlet, and the first adsorption impeller assembly and the rotating shaft are driven to rotate in the cylindrical liquid containing tank;
VOC waste gas enters the system through a first gas transmission pipeline, wherein one part of the VOC waste gas enters the columnar liquid containing tank through a main gas inlet pipeline through a main gas inlet, and the other part of the VOC waste gas enters the columnar liquid containing tank through an auxiliary gas inlet pipeline through an auxiliary gas inlet; and gas discharged from the columnar liquid containing tank sequentially passes through the waste gas washing tower device and the physical adsorption device and is discharged.
Preferably, the thickness of the impeller blade is gradually increased from the connecting end of the impeller blade and the rotating wheel to the outer end;
the impeller sheet is densely provided with ventilation micropores which are communicated along the thickness direction of the impeller sheet; the ventilation micropores are tapered holes, and the diameters of the ventilation micropores are gradually reduced along the airflow direction.
Preferably, the surfaces of the two sides of the impeller blade in the airflow direction are provided with flow guide long grooves, and the flow guide long grooves are arranged along the radial direction of the impeller blade;
and filter membranes are covered on the surfaces of the two sides of the impeller blade along the airflow direction.
Preferably, a first annular baffle is further arranged on the inner wall of the columnar liquid containing tank, and the first annular baffle is arranged at the front end of the first adsorption impeller assembly along the airflow direction;
the ring width of the first annular baffle plate is larger than the distance between the outer end of the driving plate and the inner wall of the cylindrical liquid containing tank.
Preferably, the adsorption impeller mechanism further comprises a second adsorption impeller assembly, a third adsorption impeller assembly and a fourth adsorption impeller assembly which are sequentially arranged at the downstream of the first adsorption impeller assembly along the airflow direction;
a second annular baffle, a third annular baffle and a fourth annular baffle are sequentially arranged on the inner wall of the columnar liquid containing tank along the airflow direction; and the second annular baffle, the third annular baffle and the fourth annular baffle are respectively arranged at the front ends of the second adsorption impeller assembly, the third adsorption impeller assembly and the fourth adsorption impeller assembly along the airflow direction.
Preferably, the side wall of the cylindrical liquid containing tank along the radial direction is also provided with an exhaust gas outlet.
Preferably, the exhaust gas scrubber device comprises a scrubber, a spray header arranged in the scrubber, and a scrubbing liquid supply assembly connected with the spray header;
and the waste gas outlet is communicated to the gas inlet end of the washing tower through a second gas transmission pipeline.
Preferably, the physical adsorption device comprises a shell, a filter layer arranged in the shell, and a gas inlet and a gas outlet which are respectively arranged at the lower end and the upper end of the shell;
the filtering layer comprises a non-woven fabric layer, a polypropylene fiber layer, an activated carbon layer, a carbon nanofiber fabric layer, a polyurethane foam layer and a polyphenylene sulfide fiber layer which are sequentially arranged from bottom to top.
Preferably, the gas outlet end of the washing tower is communicated to the gas inlet of the shell through a third gas transmission pipeline;
a first fan is arranged on the first gas transmission pipeline; a second fan is arranged on the second gas transmission pipeline; and a dryer is also arranged on the third gas transmission pipeline.
Preferably, the on-line monitoring device includes a first gas detection assembly disposed on the first gas transmission pipe, a second gas detection assembly disposed on the second gas transmission pipe, and a third gas detection assembly disposed on the gas outlet of the housing.
The utility model has the advantages that: the utility model discloses a VOC exhaust-gas treatment system handles waste gas in proper order through combining liquid adsorption device, exhaust gas washing tower device and physical adsorption device, can guarantee the treatment effect of waste gas, discharges out clean gas.
The liquid adsorption device of the utility model utilizes the adsorption liquid to adsorb a large amount of harmful organic matters in the waste gas, and drives the adsorption impeller mechanism and the rotating shaft to rotate by introducing the airflow in the rotational flow direction, thereby saving a driving mechanism, saving energy consumption and simplifying equipment; the adsorption impeller mechanism continuously rotates, so that the impeller blades can continuously adsorb the adsorption liquid in the cylindrical liquid storage tank, the adsorption liquid on the impeller blades is ensured to be continuously supplemented and replaced, and the effect of the adsorption liquid on the impeller blades is ensured; the waste gas whirls and advances through the impeller blade, enables waste gas and the abundant collision contact of absorption liquid on the impeller blade, can improve waste gas treatment effect greatly.
The utility model discloses a physical adsorption device can carry out effectual filtration to waste gas through setting up the multiple-layer filtering structure, realizes the effective purification to waste gas.
The utility model discloses a set up on-line monitoring device for the content of the main harmful substance in the gas to a plurality of operation district section detects, whether the operating condition of monitoring system and final combustion gas are up to standard.
Drawings
Fig. 1 is a schematic structural view of a VOC exhaust gas treatment system of the present invention;
FIG. 2 is a schematic structural view of the liquid adsorption apparatus of the present invention;
FIG. 3 is a schematic view of a first adsorption impeller assembly of the present invention;
fig. 4 is a schematic sectional structure view of the driving plate of the present invention;
FIG. 5 is a schematic cross-sectional view of an impeller blade according to the present invention;
fig. 6 is a schematic structural view of a second adsorption impeller assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of the physical adsorption device of the present invention.
Description of reference numerals:
1-a liquid adsorption device; 10-a columnar liquid containing tank; 11-a rotating shaft; 12-an adsorption impeller mechanism; 13-a first adsorption impeller assembly; 14-a second adsorption impeller assembly; 15-a third adsorption impeller assembly; 16-a fourth adsorption impeller assembly; 100 — primary air intake; 101 — secondary air intake; 102 — an exhaust gas outlet; 103 — a first annular baffle; 104 — a second annular baffle; 105 — a third annular baffle; 106 — a fourth annular baffle; 107-adsorption liquid inlet; 108-discharge port of adsorption liquid; 130-a rotating wheel; 131-impeller blades; 132-a drive plate; 133-groove; 134-vent micropores; 135-long diversion groove; 136-a filter membrane;
2-a waste gas scrubber unit; 20-a washing column; 21-a spray header; 22-a washing liquid supply assembly; 23-a washing liquid storage tank; 24-a washing liquid supply pump; 25-a second solenoid valve; 200-a waste liquid discharge port;
3-a physical adsorption device; 30-a housing; 31-a filter layer; 32-gas inlet; 33-gas outlet; 310-a non-woven fabric layer; 311-a polypropylene fiber layer; 312 — an activated carbon layer; 313-carbon nanofiber cloth layer; 314 — a polyurethane foam layer; 315-polyphenylene sulfide fiber layer;
40 — a first gas detection assembly; 41 — a second gas detection assembly; 42 — a third gas detection assembly;
50-a first gas transmission pipeline; 51-main intake duct; 52-auxiliary inlet duct; 53-second gas transmission pipeline; 54-a third gas transmission pipeline; 55-a first fan; 56-a second fan; 57-a dryer; 58-first solenoid valve.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 5, the VOC exhaust gas treatment system of the present embodiment includes a liquid adsorption device 1, an exhaust gas washing tower 20, a physical adsorption device 3, and an on-line monitoring device, which are sequentially arranged along an air flow direction.
The VOC waste gas is sequentially treated by a liquid adsorption device 1, a waste gas washing tower 20 device 2 and a physical adsorption device 3, the liquid adsorption device 1 absorbs a large amount of organic pollutants in the VOC waste gas by using adsorption liquid (or absorption liquid), and then the pollutants in the waste gas are further removed by the waste gas washing tower 20 device 2; and finally, carrying out physical adsorption through a physical adsorption device 3 to deeply purify the waste gas so as to ensure that clean tail gas is discharged.
In this embodiment, the liquid adsorption device 1 includes a columnar liquid containing tank 10 horizontally disposed, a rotating shaft 11 rotatably disposed in the columnar liquid containing tank 10 and parallel to the central axis of the columnar liquid containing tank 10, and an adsorption impeller mechanism 12 disposed on the rotating shaft 11; the column-shaped liquid container 10 contains an adsorption liquid, and in a preferred embodiment, the liquid level of the adsorption liquid is lower than the height of the rotating shaft 11, so that the adsorption liquid does not submerge the rotating shaft 11, and the corrosion to the rotating shaft 11 is reduced. The rotating shaft 11 and the adsorption impeller mechanism 12 are made of corrosion-resistant materials in the prior art.
The air inlet end part of the columnar liquid containing tank 10 along the axial direction is provided with a main air inlet 100, and the side wall of the columnar liquid containing tank along the radial direction is provided with an auxiliary air inlet 101; the auxiliary air inlet 101 is tangentially arranged along the periphery of the air inlet end part of the columnar liquid containing tank 10 and is vertical to the arrangement direction of the main air inlet 100;
the absorption impeller mechanism 12 comprises a first absorption impeller assembly 13, the first absorption impeller assembly 13 comprises a rotating wheel 130 fixedly connected on the rotating shaft 11, a plurality of impeller blades 131 uniformly arranged on the rotating wheel 130 at intervals and a driving plate 132 connected with the end parts of the impeller blades 131; a groove 133 is formed in the driving plate 132, and the opening direction of the groove 133 faces the air intake direction of the auxiliary air inlet 101, so that the driving plate 132 is driven to rotate by the air flow of the auxiliary air inlet 101, and the first adsorption impeller assembly 13 and the rotating shaft 11 are driven to rotate in the cylindrical liquid containing tank 10;
VOC waste gas enters the system through a first gas transmission pipeline 50, wherein one part of the VOC waste gas enters the columnar liquid containing tank 10 through a main gas inlet 100 through a main gas inlet pipeline 51, and the other part of the VOC waste gas enters the columnar liquid containing tank 10 through an auxiliary gas inlet 101 through an auxiliary gas inlet pipeline 52; the gas discharged from the column-shaped liquid containing tank 10 passes through the waste gas washing tower 20 device 2 and the physical adsorption device 3 in sequence and then is discharged. The first gas transmission pipeline 50 is provided with a first fan 55 for conveying the exhaust gas.
In this embodiment, the airflow through the auxiliary air inlet duct 52 drives the adsorption impeller mechanism 12 and the rotating shaft 11 to rotate, so that other flowing power is fully utilized, a driving mechanism is omitted, energy consumption is reduced, and the equipment is simplified. The airflow in the auxiliary air inlet duct 52 enters tangentially along the periphery of the cylindrical liquid containing tank 10, and the airflow reaches the driving plate 132 and generates power in the rotating direction to the driving plate 132, so that the driving plate 132 and the first adsorption impeller assembly 13 are driven to rotate around the axis of the cylindrical liquid containing tank 10, the rotating shaft 11 is driven to rotate together, and other adsorption impeller assemblies on the rotating shaft 11 also rotate together. The adsorption impeller assembly continuously rotates, so that the impeller blades 131 can continuously adsorb the adsorption liquid in the cylindrical liquid containing tank 10, continuous supplement and replacement of the adsorption liquid on the impeller blades 131 are ensured, the phenomenon of saturation caused by excessive absorption of waste gas by the adsorption liquid on the impeller blades 131 is prevented, and the effect of the adsorption liquid on the impeller blades 131 is ensured. The air flow of the main air inlet pipe 51 flows from left to right along the axial direction of the columnar liquid containing tank 10, and the air filters harmful substances through the micropores on the impeller blades 131. The combination of the transverse air flow (the air flow in the main air inlet pipeline 51) and the circumferential rotational flow (the air flow in the auxiliary air inlet pipeline 52) enables the rotational flow of the waste gas to advance through the impeller blades 131, so that the waste gas can fully collide and contact with the adsorption liquid on the impeller blades 131, and the waste gas treatment effect can be greatly improved. Referring to fig. 4, a front view of the impeller blades 131 and the drive plate 132 is taken along the thickness direction. Referring to fig. 5, a side view of impeller blade 131 taken in the thickness direction is shown.
Wherein, the thickness of the impeller blade 131 is increased from the connecting end of the impeller blade 131 and the runner 130 to the periphery;
the impeller blades 131 are densely provided with ventilation micropores 134 which are penetrated through along the thickness direction; the venting micropores 134 are tapered holes with a diameter that gradually decreases in the direction of gas flow. After the gas flows into the small-diameter end from the large-diameter end (from left to right), the air flow rate is increased, and the air flow rate can be increased compared with that of a cylindrical hole.
Flow guide long grooves 135 are formed in the surfaces of the two sides of the impeller blade 131 in the airflow direction, and the flow guide long grooves 135 are arranged in the radial direction of the impeller blade 131; since the rotating shaft 11 is exposed to the adsorption solution to reduce corrosion, when the impeller blades 131 are immersed in the adsorption solution, the portions of the impeller blades 131 close to the rotating wheel 130 cannot be immersed in the adsorption solution. By arranging the long diversion groove 135, when the impeller blade 131 rotates, the adsorption liquid at the outer end of the impeller blade 131 can be promoted to flow to the inner end (the part close to the rotating wheel 130) of the impeller blade 131, so that the whole impeller blade 131 is uniformly filled with the adsorption liquid, and the waste gas treatment effect is improved. The surfaces of the impeller blades 131 on both sides in the direction of the air flow are covered with filter membranes 136. The filter membrane 136 can promote the exhaust gas to fully contact with the adsorption liquid and can also generate a filtering effect on the exhaust gas. The filter membrane 136 may be a carbon fiber filter membrane 136 or other corrosion resistant filter membrane 136.
A first annular baffle plate 103 is further arranged on the inner wall of the columnar liquid containing tank 10, and the first annular baffle plate 103 is arranged at the front end of the first adsorption impeller assembly 13 along the airflow direction; the first annular baffle plate 103 has an annular width greater than the distance between the outer end of the drive plate 132 and the inner wall of the cylindrical liquid-containing tank 10. The arrangement of the first annular baffle plate 103 can prevent the waste gas from directly passing through the gap between the outer end of the impeller blade 131 and the inner wall of the cylindrical liquid containing tank 10 without being filtered by the impeller blade 131, thereby further ensuring the waste gas treatment effect.
The exhaust gas treatment effect of the first adsorption impeller assembly 13 may be controlled by varying the number of impeller blades 131 on the first adsorption impeller assembly 13 or the rotation speed of the impeller blades 131. The more the number of the impeller blades 131 is, the faster the rotation speed is, and the more thorough the exhaust gas treatment is. The speed of rotation is primarily controllable by the amount and rate of air flow in the secondary intake conduit 52.
In a preferred embodiment, the suction impeller mechanism 12 further comprises a second suction impeller assembly 14, a third suction impeller assembly 15 and a fourth suction impeller assembly 16, which are arranged in the air flow direction in sequence downstream of the first suction impeller assembly 13; the second suction impeller assembly 14, the third suction impeller assembly 15 and the fourth suction impeller assembly 16 have substantially the same structure as the first suction impeller assembly 13 except that the driving plate 132 is not provided, the size of the impeller blades 131 is slightly larger, and the number of the impeller blades 131 is increased in turn. In this embodiment, the number of the impeller blades 131 on the first adsorption impeller assembly 13, the second adsorption impeller assembly 14, the third adsorption impeller assembly 15 and the fourth adsorption impeller assembly 16 is 3, 4, 6 and 8 in sequence, and all the impeller blades are uniformly spaced (fig. 6 shows a structural diagram of the second adsorption impeller assembly 14). Therefore, the waste gas treatment effect of the first adsorption impeller assembly 13, the second adsorption impeller assembly 14, the third adsorption impeller assembly 15 and the fourth adsorption impeller assembly 16 is sequentially enhanced, and the waste gas is sequentially treated in a layered manner through the four groups of impeller blades 131, so that the adsorption effect on harmful substances in the waste gas can be greatly improved.
A second annular baffle plate 104, a third annular baffle plate 105 and a fourth annular baffle plate 106 are further sequentially arranged on the inner wall of the columnar liquid containing tank 10 along the airflow direction; and the second annular baffle 104, the third annular baffle 105 and the fourth annular baffle 106 are respectively arranged at the front ends of the second adsorption impeller assembly 14, the third adsorption impeller assembly 15 and the fourth adsorption impeller assembly 16 along the airflow direction. The second, third and fourth annular baffles 104, 105 and 106 function in the same manner as the first annular baffle 103. The second adsorption impeller assembly 14, the third adsorption impeller assembly 15 and the fourth adsorption impeller assembly 16 rotate together with the first adsorption impeller assembly 13 along with the rotation of the rotating shaft 11, the exhaust gas sequentially passes through the impeller blades 131 on the first adsorption impeller assembly 13, the second adsorption impeller assembly 14, the third adsorption impeller assembly 15 and the fourth adsorption impeller assembly 16, and the exhaust gas is contacted with the adsorption liquid to remove a large amount of organic matters in the exhaust gas. The columnar liquid containing tank 10 is also provided with an adsorption liquid inlet 107 and an adsorption liquid discharge port 108, and the adsorption liquid inlet 107 is used for adding and supplementing adsorption liquid; when the absorption liquid needs to be replaced, the absorption liquid is discharged through the waste discharge port.
In the preferred embodiment, the cylindrical tank 10 is also provided with an exhaust gas outlet 102 along the radial side wall. The exhaust gas washing tower 20 device 2 comprises a washing tower 20, a spray header 21 arranged in the washing tower 20 and a washing liquid supply component 22 connected with the spray header 21; the exhaust gas outlet 102 is connected to the gas inlet side of the scrubber 20 via a second gas transfer line 53. The exhaust gas treated by the liquid adsorption device 1 enters the exhaust gas washing tower 20 through the exhaust gas outlet 102 for further purification treatment. The gas outlet end of the washing tower 20 is communicated to the gas inlet 32 of the shell 30 through a third gas transmission pipeline 54; the first gas transmission pipeline 50 is provided with a first fan 55; the second air transmission pipeline 53 is provided with a second fan 56; a dryer 57 is also provided on the third gas delivery conduit 54. The washing tower 20 is further provided with a waste liquid discharge port 200 to discharge the washing liquid therein.
The washing liquid supply assembly 22 comprises a washing liquid storage tank 23 and a washing liquid supply pump 24, the washing liquid is pumped into the spray header 21 through the washing liquid supply pump 24, the spray header 21 sprays the washing liquid from top to bottom, the waste gas entering from the lower part is in reverse contact with the washing liquid to remove a large amount of harmful substances in the waste gas, the treated waste gas is discharged from the gas outlet end on the upper part and enters the dryer 57 for drying, and the dried gas enters the physical adsorption device 3 for further treatment.
In the above embodiments, the adsorbing solution and the washing solution are selected from the reagents commonly used in the field, such as acid solution or alkali solution. For example: sodium hydroxide solution, ammonia, sodium hypochlorite, diethylpropanolamine, and the like. The person skilled in the art can select the main pollutant components in the exhaust gas from the existing adsorption liquid and washing liquid, and the present invention is not limited to this.
In a further preferred embodiment, the physical adsorption device 3 comprises a housing 30, a filter layer 31 disposed inside the housing 30, and a gas inlet 32 and a gas outlet 33 respectively opened at the lower end and the upper end of the housing 30;
the filter layer 31 includes a non-woven fabric layer 310, a polypropylene fiber layer 311, an activated carbon layer 312, a carbon nanofiber fabric layer 313, a polyurethane foam layer 314, and a polyphenylene sulfide fiber layer 315, which are sequentially disposed from bottom to top. The physical adsorption device 3 mainly performs deep filtration on the entering gas through the filter layer 31 to ensure that clean gas is finally discharged. Wherein the non-woven layer 310 provides outer layer protection. The activated carbon layer 312 has a good adsorption effect on most organic and inorganic substances. The polypropylene fiber layer 311 has a porous structure, has an excellent adsorption effect, and is high in adsorption rate, and good in mechanical property and corrosion resistance; the carbon nanofiber cloth layer 313 has good adsorption performance and has good adsorption effect on most organic matters and inorganic matters; and the coating also has good weather resistance and corrosion resistance, and can be arranged on the inner layer, so that the strength of the filter layer 31 can be obviously improved, and the service life of the coating is prolonged. The polyurethane foam layer 314 has a porous structure, which has excellent adsorption properties. The polyphenylene sulfide fiber layer 315 has high porosity, large pollutant carrying capacity, good pressure resistance and capability of deep filtration. The utility model discloses a range upon range of the lamellar filtering structure who sets up in proper order, can carry out effectual filtration to waste gas, realize the effective purification to waste gas.
In a further preferred embodiment, the on-line monitoring device includes a first gas sensing assembly 40 disposed on the first gas delivery conduit 50, a second gas sensing assembly 41 disposed on the second gas delivery conduit 53, and a third gas sensing assembly 42 disposed on the gas outlet 33 of the housing 30. The three gas detection assemblies are used for detecting the content of main harmful substances in the gas of each operation section so as to know the operation state of the system and whether the finally discharged gas reaches the standard. The three gas detection assemblies are integrated with a plurality of gas sensors and used for detecting the content of various gases, and in the embodiment, the three gas detection assemblies are integrated with a formaldehyde sensor, a xylene sensor, a toluene sensor, an acetone sensor and a butanone sensor; the method is used for detecting formaldehyde, dimethylbenzene, methylbenzene, acetone and butanone. The gas detection subassembly can select to have the sensor of corresponding function in prior art can, specific model select according to actual conditions can, the utility model discloses in need not do the injecing. Of course, for different compositions of source exhaust gas, sensors with different kinds of gas detection functions can be selected in an integrated manner, and those skilled in the art can select the sensors according to actual conditions.
The system is also provided with a controller (which is controlled by a conventional controller in the field or a computer) and a display, the three gas detection assemblies are all connected with the display and the controller (wirelessly or in a wired mode), and the display can display respective detection results of the three gas detection assemblies for a user to obtain. The sub-intake duct 52 is provided with a first solenoid valve 58, the delivery duct of the washing liquid supply pump 24 is provided with a second solenoid valve 25, and the first solenoid valve 58 and the second solenoid valve 25 can be controlled by the controller. The flow rate of exhaust gas entering the secondary intake conduit 52 may be controlled by a first solenoid valve 58. The controller is further connected with the first fan 55, the second fan 56 and the third fan, and the fans can be controlled (switched on and off, power and the like) through the controller. The controller can be provided with a control panel for manual control.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A VOC waste gas treatment system is characterized by comprising a liquid adsorption device, a waste gas washing tower device, a physical adsorption device and an online monitoring device which are sequentially arranged along the direction of air flow;
the liquid adsorption device comprises a columnar liquid containing tank which is horizontally arranged, a rotating shaft which is rotatably arranged in the columnar liquid containing tank and is parallel to the central axis of the columnar liquid containing tank, and an adsorption impeller mechanism arranged on the rotating shaft;
the air inlet end part of the columnar liquid containing tank along the axial direction is provided with a main air inlet, and the side wall of the columnar liquid containing tank along the radial direction is provided with an auxiliary air inlet; the auxiliary air inlet is tangentially arranged along the periphery of the air inlet end part of the columnar liquid containing tank and is vertical to the arrangement direction of the main air inlet;
the adsorption impeller mechanism comprises a first adsorption impeller component, and the first adsorption impeller component comprises a rotating wheel fixedly connected on the rotating shaft, a plurality of impeller blades uniformly arranged on the rotating wheel at intervals and a driving plate connected to the end parts of the impeller blades; the driving plate is provided with a groove, the opening direction of the groove faces the air inlet direction of the auxiliary air inlet, so that the driving plate is driven to rotate by the airflow of the auxiliary air inlet, and the first adsorption impeller assembly and the rotating shaft are driven to rotate in the cylindrical liquid containing tank;
VOC waste gas enters the system through a first gas transmission pipeline, wherein one part of the VOC waste gas enters the columnar liquid containing tank through a main gas inlet pipeline through a main gas inlet, and the other part of the VOC waste gas enters the columnar liquid containing tank through an auxiliary gas inlet pipeline through an auxiliary gas inlet; and gas discharged from the columnar liquid containing tank sequentially passes through the waste gas washing tower device and the physical adsorption device and is discharged.
2. A VOC exhaust treatment system according to claim 1 wherein the impeller blades have a thickness that gradually increases from the connecting ends of the impeller blades with the rotor toward the outer ends;
the impeller sheet is densely provided with ventilation micropores which are communicated along the thickness direction of the impeller sheet; the ventilation micropores are tapered holes, and the diameters of the ventilation micropores are gradually reduced along the airflow direction.
3. A VOC exhaust gas treatment system according to claim 2, wherein flow guide grooves are provided on both side surfaces of the impeller blades in the direction of air flow, and the flow guide grooves are provided in the radial direction of the impeller blades;
and filter membranes are covered on the surfaces of the two sides of the impeller blade along the airflow direction.
4. A VOC exhaust gas treatment system according to claim 3 wherein the inner wall of the cylindrical tank is further provided with a first annular baffle plate, the first annular baffle plate being provided at the front end of the first adsorption impeller assembly in the direction of gas flow;
the ring width of the first annular baffle plate is larger than the distance between the outer end of the driving plate and the inner wall of the cylindrical liquid containing tank.
5. The VOC exhaust treatment system of claim 4 wherein the sorption impeller mechanism further comprises a second sorption impeller assembly, a third sorption impeller assembly and a fourth sorption impeller assembly disposed downstream of the first sorption impeller assembly in the gas flow direction;
a second annular baffle, a third annular baffle and a fourth annular baffle are sequentially arranged on the inner wall of the columnar liquid containing tank along the airflow direction; and the second annular baffle, the third annular baffle and the fourth annular baffle are respectively arranged at the front ends of the second adsorption impeller assembly, the third adsorption impeller assembly and the fourth adsorption impeller assembly along the airflow direction.
6. A VOC waste gas treatment system as claimed in claim 5, wherein said cylindrical tank is further provided with a waste gas outlet on the radial side wall.
7. A VOC exhaust treatment system as claimed in claim 6, wherein the exhaust scrubber device comprises a scrubber, a spray header disposed within the scrubber, and a scrubber supply assembly connected to the spray header;
and the waste gas outlet is communicated to the gas inlet end of the washing tower through a second gas transmission pipeline.
8. A VOC exhaust treatment system as claimed in claim 7, wherein the physical adsorption device comprises a housing, a filter layer disposed inside the housing, and a gas inlet and a gas outlet disposed at the lower end and the upper end of the housing, respectively;
the filtering layer comprises a non-woven fabric layer, a polypropylene fiber layer, an activated carbon layer, a carbon nanofiber fabric layer, a polyurethane foam layer and a polyphenylene sulfide fiber layer which are sequentially arranged from bottom to top.
9. A VOC exhaust gas treatment system according to claim 8 wherein the scrubber outlet end is connected to the housing gas inlet by a third gas transfer duct;
a first fan is arranged on the first gas transmission pipeline; a second fan is arranged on the second gas transmission pipeline; and a dryer is also arranged on the third gas transmission pipeline.
10. A VOC exhaust treatment system according to claim 8 wherein the on-line monitoring device comprises a first gas detection assembly disposed on the first gas transmission conduit, a second gas detection assembly disposed on the second gas transmission conduit, and a third gas detection assembly disposed on the gas outlet of the housing.
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| CN201921533336.9U CN211411580U (en) | 2019-09-16 | 2019-09-16 | VOC exhaust treatment system |
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| CN201921533336.9U CN211411580U (en) | 2019-09-16 | 2019-09-16 | VOC exhaust treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496513A (en) * | 2019-09-16 | 2019-11-26 | 苏州仕净环保科技股份有限公司 | A kind of VOC exhaust treatment system |
| CN112275075A (en) * | 2020-10-21 | 2021-01-29 | 湖南青涟环保科技有限公司 | Fountain exhaust treatment device |
-
2019
- 2019-09-16 CN CN201921533336.9U patent/CN211411580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496513A (en) * | 2019-09-16 | 2019-11-26 | 苏州仕净环保科技股份有限公司 | A kind of VOC exhaust treatment system |
| CN112275075A (en) * | 2020-10-21 | 2021-01-29 | 湖南青涟环保科技有限公司 | Fountain exhaust treatment device |
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