CN107042055B - Waste gas treatment system - Google Patents
Waste gas treatment system Download PDFInfo
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- CN107042055B CN107042055B CN201710509686.0A CN201710509686A CN107042055B CN 107042055 B CN107042055 B CN 107042055B CN 201710509686 A CN201710509686 A CN 201710509686A CN 107042055 B CN107042055 B CN 107042055B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1431—Pretreatment by other processes
- B01D53/145—Pretreatment by separation of solid or liquid material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Abstract
The invention relates to a waste gas treatment system which comprises a preceding stage dust collecting device, a first waste gas treatment tower, a second waste gas treatment tower and an induced draft fan. Preceding stage dust collecting device is connected with first exhaust-gas treatment tower through first pipeline, first exhaust-gas treatment tower passes through the second pipeline and is connected with second exhaust-gas treatment tower, second exhaust-gas treatment tower is connected with the draught fan through first exhaust pipe, and the gas after the second treatment tower is handled is discharged by the draught fan. The first pipeline is led out to form a first branch which enables the first pipeline to be communicated with the second pipeline, a first valve is arranged on the first branch, a second valve is arranged on the first pipeline after the first branch is led out, and a third valve is arranged on the second pipeline close to the first waste gas treatment tower. The first valve is interlocked with the second valve and the third valve respectively. The invention has simple structure, can effectively treat waste gas to meet the standard requirement, has good flexibility and can greatly reduce the operation cost.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment system.
Background
The waste gas treatment mainly refers to the treatment of industrial waste gas such as dust particles, smoke and dust, peculiar smell gas and toxic and harmful gas generated in industrial places. Common waste gas treatment includes factory smoke waste gas purification, workshop dust waste gas purification, organic waste gas purification, waste gas peculiar smell purification, acid-base waste gas purification, chemical waste gas purification and the like. The common methods are as follows: the water absorption method, the aeration activated sludge deodorization method and the multi-medium catalytic oxidation process have the advantages that the waste gas pollutes air seriously, so strict requirements are made for waste gas treatment environmental protection departments of chemical plants, and the waste gas can be discharged after the treatment of each plant reaches the standard.
The industrial waste gas discharged by general industrial production contains volatile harmful gas and a small amount of solid particulate impurities such as dust, and the solid particulate impurities can often block subsequent treatment equipment and even lead a catalyst of subsequent treatment gas to lose efficacy, thereby reducing the treatment effect of the waste gas. In addition, although the treatment effect of the existing exhaust gas treatment system can meet the specification requirements, the flexibility is poor, and the operation cost is high.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide an exhaust gas treatment system with a simple structure, which not only can effectively treat exhaust gas to meet the specification requirements, but also has good flexibility and can greatly reduce the operation cost.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
the utility model provides a waste gas treatment system, includes preceding stage dust collecting device, first exhaust-gas treatment tower, second exhaust-gas treatment tower and draught fan, preceding stage dust collecting device through first pipeline with first exhaust-gas treatment tower is connected, makes the process gas after preceding stage dust collecting device handles can enter into first exhaust-gas treatment tower, first exhaust-gas treatment tower pass through the second pipeline with second exhaust-gas treatment tower is connected, makes the process gas after first exhaust-gas treatment tower handles can enter into second exhaust-gas treatment tower, second exhaust-gas treatment tower pass through first exhaust pipeline with the draught fan is connected, process gas after second exhaust-gas treatment tower handles is discharged by the draught fan,
a first branch is led out of the first pipeline, the first pipeline is communicated with the second pipeline through the first branch, a first valve is arranged on the first branch, a second valve is arranged on the first pipeline after the first branch is led out, a third valve is arranged on the second pipeline close to the first waste gas treatment tower, and the first valve is linked with the second valve and the third valve respectively.
Furthermore, a second branch is led out from the second pipeline, the second branch enables the second pipeline to be communicated with the first exhaust pipeline, a fourth valve is arranged on the second branch, the first exhaust pipeline is close to the second exhaust gas treatment tower, a fifth valve is arranged on the second pipeline after the second branch is led out, and the fourth valve is respectively linked with the fifth valve and the sixth valve.
Further, the first waste gas treatment tower and the second waste gas treatment tower respectively comprise a storage tank, a tower body and a circulating pump, the tower body is arranged on the upper portion of the storage tank, the interior of the tower body is communicated with the interior of the storage tank, an inlet of the circulating pump is communicated with the storage tank through a first circulating pipeline, an outlet of the circulating pump is communicated with the tower body through a second circulating pipeline,
and an absorbent solution for absorbing impurities in the gas to be treated is stored in the storage tank.
Furthermore, the tower body is provided with an air inlet and an air outlet, the air inlet is used for the gas to be treated to enter the tower body, the air outlet is used for the treated gas to be discharged out of the tower body,
the air inlet is close to the holding vessel sets up on the tower body, the gas outlet sets up the tower body top.
Further, be equipped with gas distribution device in the tower body, gas distribution device with the air inlet is connected, makes from the gas that the air inlet got into can evenly distributed in the tower body.
Further, a liquid distributor is arranged in the tower body and close to the air outlet, and the liquid distributor is communicated with the second circulating pipeline, so that liquid entering from the second circulating pipeline can be uniformly distributed in the tower body.
Further, a packing bed layer is arranged in the tower body and is arranged between the gas distribution device and the liquid distributor.
Furthermore, a defoaming device is arranged in the tower body and used for removing foams carried in the treated gas, and the defoaming device is arranged between the gas outlet and the liquid distributor.
Furthermore, a first dust collecting unit and a second dust collecting unit are sequentially arranged in the front-stage dust collecting device along the gas flowing direction, the first dust collecting unit is used for collecting solid particles with the particle size not smaller than the first diameter, and the second dust collecting unit is used for collecting solid particles with the particle size not smaller than the second diameter.
Further, exhaust-gas treatment system still includes eduction gear, eduction gear pass through the second exhaust pipe with the exit linkage of draught fan, eduction gear's the distance of the export of airing exhaust apart from ground is not less than 15 meters.
The waste gas treatment system has the following beneficial effects:
1) according to the waste gas treatment system, the solid particle impurities in the waste gas to be treated can be removed in time by arranging the front-stage dust collecting device, so that the blockage of subsequent treatment equipment can be effectively avoided, and the waste gas treatment effect is ensured.
2) According to the invention, a first branch is led out of a first pipeline, the first branch enables the first pipeline to be communicated with a second pipeline, and a first valve is respectively interlocked with a second valve and a third valve. When the waste gas contains more gas impurities, the emission standard of the standard requirement cannot be met through the primary waste gas treatment, the first valve is closed at the moment, the second valve and the third valve are opened in a linkage manner at the same time, and the first waste gas treatment tower and the second waste gas treatment form a series connection relationship at the moment, so that the gas treated by the front-stage dust collecting device firstly enters the first waste gas treatment tower for treatment, the treated waste gas enters the second waste gas treatment tower for further treatment, and the gas after the two-stage treatment is discharged from the discharging device through the induced draft fan; when the gas impurities contained in the waste gas are less, the first valve can be opened, the second valve and the third valve are closed in a linkage manner, the gas treated by the front-stage dust collecting device directly enters the second waste gas treatment tower through the first branch for treatment, and the treated gas is discharged from the discharge device through the induced draft fan. Therefore, the waste gas treatment system can select one-stage waste gas treatment or two-stage waste gas treatment according to the amount of the gas impurities in the waste gas, thereby having good flexibility, namely reducing the operation cost and effectively treating the waste gas.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of an exhaust treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an exhaust treatment system according to another embodiment of the present invention;
in the figure: 10-a front-stage dust collecting device, 20-a first waste gas treatment tower, 30-a second waste gas treatment tower, 40-an induced draft fan, 50-an exhaust device, 101-a first dust collecting unit, 102-a second dust collecting unit, 21, 31-a storage tank, 22, 32-a tower body, 221, 321-an air inlet, 222, 322-an air outlet, 223, 323-a gas distribution device, 224, 324-a liquid distributor, 225, 325-a defoaming device, 226, 326-a packing bed layer, 201, 301-a circulating pump, 201a, 301 a-a first circulating pipeline, 201b, 301 b-a second circulating pipeline, 1-a first pipeline, 2-a second pipeline, 3-a first branch, 4-a second branch, 5-a first exhaust pipeline, 6-a second exhaust pipeline, k 1-k 6 valves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
The embodiment provides a simple structure's exhaust-gas treatment system, and this system not only can effectual processing waste gas, reaches the standard requirement, but also has fine flexibility, can greatly reduced running cost. Specifically, please refer to fig. 1.
The exhaust treatment system shown in fig. 1 comprises a preceding stage dust collecting device 10, a first exhaust treatment tower 20, a second exhaust treatment tower 30 and a draught fan 40, wherein the preceding stage dust collecting device 10 is connected with the first exhaust treatment tower 20 through a first pipeline 1, so that the gas processed by the preceding stage dust collecting device 10 can enter the first exhaust treatment tower 20. The air inlet of the pre-stage dust collecting device 10 is connected to an exhaust gas manifold, and exhaust gas to be treated collected in the exhaust gas manifold first enters the pre-stage dust collecting device 10 to be treated.
First exhaust-gas treatment tower 20 through second pipeline 2 with second exhaust-gas treatment tower 30 is connected, makes the process gas after first exhaust-gas treatment tower 20 handles can get into second exhaust-gas treatment tower 30, second exhaust-gas treatment tower 30 through first exhaust pipe 5 with draught fan 40 is connected, the process gas after second exhaust-gas treatment tower 30 handles is discharged by draught fan 40.
In one embodiment, the exhaust gas treatment system further comprises an exhaust device 50, wherein the exhaust device 50 is arranged behind the induced draft fan 40 and is connected with the outlet of the induced draft fan 40 through the second exhaust pipeline 6, so that the gas exhausted from the induced draft fan 40 can enter the exhaust device 50 and be exhausted by the exhaust device 50. The distance between the gas outlet of the discharging device 50 and the ground is required to be not less than 15 m so as to meet the standard of environmental protection.
As shown in fig. 1, each of the first and second exhaust gas treatment towers 20 and 30 includes a storage tank 21, 31, a tower body 22, 32, and a circulation pump 201, 301, the tower body 22, 32 is disposed on the storage tank 21, 31, the tower body 22, 32 is communicated with the storage tank 21, 31, the inlet of the circulation pump 201, 301 is communicated with the storage tank 21, 31 through a first circulation pipe 201a, 301a, and the outlet of the circulation pump 201, 301 is communicated with the tower body 22, 32 through a second circulation pipe 201b, 301 b. The storage tanks 21, 31 store therein an absorbent solution for absorbing impurities in the gas to be treated. When the first exhaust gas treatment tower 20 and the second exhaust gas treatment tower 30 are in operation, the circulation pumps 201, 301 pump the absorbent solution in the storage tanks 21, 31, for example, in the tower bodies 22, 32.
In one embodiment, the tower body 22, 32 is provided with a gas inlet 221, 321 and a gas outlet 222, 322, the gas inlet 221, 321 is used for the gas to be treated to enter the tower body 22, 32, the gas outlet 222, 322 is used for the treated gas to exit the tower body 22, 32, the gas inlet 221, 321 is arranged on the tower body 22, 32 near the storage tank 21, 31, and the gas outlet 222, 322 is arranged at the top of the tower body 22, 32. A liquid distributor 224, 324 is disposed in the tower body 22, 32 near the air outlet 222, 322, and the liquid distributor 224, 324 is communicated with the second circulation pipeline 201b, 301b, so that the liquid entering from the second circulation pipeline 201b, 301b can be uniformly distributed in the tower body 22, 32.
In order to make the gas entering the tower body 22, 32 uniformly distributed in the tower body, thereby enhancing the treatment effect, in one embodiment, a gas distribution device 223, 323 is provided in the tower body 22, 32, and the gas distribution device 223, 323 is connected with the gas inlet 221, 321, so that the gas entering from the gas inlet 221, 321 can be uniformly distributed in the tower body 22, 32. In order to increase the contact area between the gas to be treated and the absorbent solution, a bed of packing is also provided in the column 22, 32, which is arranged between the gas distributor 223, 323 and the liquid distributor 224, 324.
In one embodiment, a first branch 3 leads from the first pipeline 1, the first branch 3 connects the first pipeline 1 with the second pipeline 2, a first valve k1 is provided on the first branch 3, the first pipeline 1 is provided with a second valve k2 after leading from the first branch 3, the second pipeline 2 is provided with a third valve k3 near the first exhaust gas treatment tower 20, and the first valve k1 is interlocked with the second valve k2 and the third valve k3 respectively. Thus, when the first valve k1 is opened, the second valve k2 and the third valve k3 are interlocked, so that the second valve k2 and the third valve k3 are closed, the first pipeline 1 is communicated with the second pipeline 2, the first pipeline 1 is not communicated with the first exhaust gas treatment tower 20, and the exhaust gas treated by the front stage dust collector 10 directly enters the second exhaust gas treatment tower 30 to be treated without passing through the first exhaust gas treatment tower 20; when the first valve k1 is closed, the second valve k2 and the third valve k3 are interlocked to open the second valve k2 and the third valve k3, and the first pipeline 1 is not communicated with the second pipeline 2, the first pipeline 1 is communicated with the first exhaust gas treatment tower 20, and the exhaust gas treated by the pre-stage dust collector 10 enters the first exhaust gas treatment tower 20 through the first pipeline 1.
By adopting the connection mode of the pipelines, when the exhaust gas contains more gas impurities, the emission standard of the standard requirement cannot be met through the primary exhaust gas treatment, at the moment, the first valve k1 is closed, and the second valve k2 and the third valve k3 are opened in a linkage manner at the same time, at the moment, the first exhaust gas treatment tower 20 and the second exhaust gas treatment tower 30 form a series connection relationship, so that the gas treated by the primary dust collecting device 10 firstly enters the first exhaust gas treatment tower 20 for treatment, the treated exhaust gas enters the second exhaust gas treatment tower 30 for further treatment, and the gas treated by the two stages is discharged from the discharge device 50 through the induced draft fan 40; when the exhaust gas contains less gas impurities, the first valve k1 can be opened, and the second valve k2 and the third valve k3 can be closed in a linkage manner at the same time, so that the gas treated by the pre-stage dust collector 10 directly enters the second exhaust gas treatment tower 30 through the first branch 3 for treatment, and the treated gas is discharged from the exhaust device 50 through the induced draft fan 40. Therefore, the waste gas treatment system can select one-stage waste gas treatment or two-stage waste gas treatment according to the amount of the gas impurities in the waste gas, thereby having good flexibility, namely reducing the operation cost and effectively treating the waste gas.
In one embodiment, a demister 225, 325 is provided in the tower 22, 32, the demister 225, 325 being configured to remove entrained foam from the treated gas, the demister 225, 325 being arranged between the gas outlet 222, 322 and the liquid distributor 224, 324.
In one embodiment, a first dust collecting unit 101 and a second dust collecting unit 102 are sequentially disposed in the front stage dust collecting device 10 along the gas flow direction, the first dust collecting unit 101 is used for collecting solid particles with a particle size not smaller than a first diameter, and the second dust collecting unit 102 is used for collecting solid particles with a particle size not smaller than a second diameter, so that solid particle impurities in the exhaust gas entering a subsequent exhaust gas treatment tower can be more sufficiently removed.
Example 2
The present embodiment provides another exhaust gas treatment system, as shown in fig. 2, the basic structure of which is completely the same as that of embodiment 1, except that a second branch 4 is led out from the second pipeline 2, the second branch 4 connects the second pipeline 2 with the first exhaust pipe 5, a fourth valve k4 is provided on the second branch 4, the first exhaust pipe 5 is provided with a fifth valve k5 near the second exhaust gas treatment tower 30, the second pipeline 2 is provided with a sixth valve k6 after leading out from the second branch 4, and the fourth valve k4 is interlocked with the fifth valve k5 and the sixth valve k6, respectively. Thus, when the fourth valve k4 is opened, the fifth valve k5 and the fourth valve k6 are interlocked, so that the fifth valve k5 and the fourth valve k6 are closed, at this time, the second pipeline 2 is communicated with the first exhaust pipeline 5, the second pipeline 2 is not communicated with the second exhaust gas treatment tower 30, and the exhaust gas treated by the front-stage dust collector 10 or the gas treated by the front-stage dust collector 10 and the first exhaust gas treatment tower 20 in sequence is directly exhausted by the induced draft fan 40 through the first exhaust pipeline 5; when the fourth valve k4 is closed, the fifth valve k5 and the fourth valve k6 are interlocked to open the fifth valve k5 and the fourth valve k6, at this time, the second pipeline 2 is not communicated with the first exhaust pipeline 5, the second pipeline 2 is communicated with the second exhaust gas treatment tower 30, the exhaust gas treated by the front stage dust collector 10 or the gas treated by the front stage dust collector 10 and the first exhaust gas treatment tower 20 in sequence must be treated by the second exhaust gas treatment tower 30, and the treated exhaust gas is exhausted by the induced draft fan 40 through the first exhaust pipeline 5.
The flexibility of the waste gas treatment system is further enhanced by adopting the pipeline connection, when the waste gas does not need to be treated, the first valve k1 and the fourth valve k4 can be selectively opened, and other valves are closed, so that the waste gas treated by the front stage dust collecting device 10 can be directly discharged by the induced draft fan 40 without passing through a waste gas treatment tower. In addition, the above pipeline connection can also be used for flexibly replacing the packing bed layer, for example, when the first waste gas treatment tower 20 needs to replace the packing bed layer, the first valve k1 can be selectively opened and the fourth valve k4 can be closed, and then the waste gas enters the second waste gas treatment tower 30 through the first branch 3 for treatment; when the second waste gas treatment tower 30 needs to replace the packing bed, the first valve k1 can be selectively closed and the fourth valve k4 can be opened, at this time, the waste gas enters the first waste gas treatment tower 20 from the first pipeline 1 for treatment, and the treated gas enters the induced draft fan 40 through the second branch 4 and is discharged.
The waste gas treatment system has the following beneficial effects:
1) according to the waste gas treatment system, the solid particle impurities in the waste gas to be treated can be removed in time by arranging the front-stage dust collecting device, so that the blockage of subsequent treatment equipment can be effectively avoided, and the waste gas treatment effect is ensured.
2) According to the invention, a first branch is led out of a first pipeline, the first branch enables the first pipeline to be communicated with a second pipeline, and a first valve is respectively interlocked with a second valve and a third valve. When the waste gas contains more gas impurities, the emission standard of the standard requirement cannot be met through the primary waste gas treatment, the first valve is closed at the moment, the second valve and the third valve are opened in a linkage manner at the same time, and the first waste gas treatment tower and the second waste gas treatment form a series connection relationship at the moment, so that the gas treated by the front-stage dust collecting device firstly enters the first waste gas treatment tower for treatment, the treated waste gas enters the second waste gas treatment tower for further treatment, and the gas after the two-stage treatment is discharged from the discharging device through the induced draft fan; when the gas impurities contained in the waste gas are less, the first valve can be opened, the second valve and the third valve are closed in a linkage manner, the gas treated by the front-stage dust collecting device directly enters the second waste gas treatment tower through the first branch for treatment, and the treated gas is discharged from the discharge device through the induced draft fan. Therefore, the waste gas treatment system can select one-stage waste gas treatment or two-stage waste gas treatment according to the amount of the gas impurities in the waste gas, thereby having good flexibility, namely reducing the operation cost and effectively treating the waste gas.
The foregoing description has disclosed fully preferred embodiments of the present invention. It should be noted that those skilled in the art can make modifications to the embodiments of the present invention without departing from the scope of the appended claims. Accordingly, the scope of the appended claims is not to be limited to the specific embodiments described above.
Claims (7)
1. A waste gas treatment system, characterized in that, includes preceding stage dust collecting device, first exhaust-gas treatment tower, second exhaust-gas treatment tower and draught fan, preceding stage dust collecting device through first pipeline with first exhaust-gas treatment tower is connected, makes the process gas after preceding stage dust collecting device handles can get into first exhaust-gas treatment tower, first exhaust-gas treatment tower pass through the second pipeline with second exhaust-gas treatment tower is connected, makes the process gas after first exhaust-gas treatment tower handles can get into second exhaust-gas treatment tower, second exhaust-gas treatment tower pass through first exhaust pipeline and be connected with the draught fan, and the process gas after second exhaust-gas treatment tower handles is discharged by the draught fan, draw forth first branch road on the first pipeline, first branch road makes first pipeline with the second pipeline intercommunication, be equipped with first valve on the first branch road, the first pipeline is provided with a second valve after leading out a first branch, the second pipeline is provided with a third valve close to the first waste gas treatment tower, the first valve is respectively linked with the second valve and the third valve, a second branch is led out of the second pipeline, the second branch enables the second pipeline to be communicated with the first exhaust pipeline, the second branch is provided with a fourth valve, the first exhaust pipeline is provided with a fifth valve close to the second waste gas treatment tower, the second pipeline is provided with a sixth valve after leading out the second branch, and the fourth valve is respectively linked with the fifth valve and the sixth valve;
when the waste gas contains more gas impurities, the emission standard of the standard requirement cannot be met through the primary waste gas treatment, the first valve is closed at the moment, the second valve and the third valve are opened in a linkage manner at the same time, and the first waste gas treatment tower and the second waste gas treatment form a series connection relationship at the moment, so that the gas treated by the front-stage dust collecting device firstly enters the first waste gas treatment tower for treatment, the treated waste gas enters the second waste gas treatment tower for further treatment, and the gas after the two-stage treatment is discharged from the discharging device through the induced draft fan; when the gas impurities contained in the waste gas are less, the first valve can be opened, and the second valve and the third valve are closed in a linkage manner at the same time, at the moment, the gas treated by the front-stage dust collecting device directly enters the second waste gas treatment tower through the first branch for treatment, and the treated gas is discharged from the discharge device through the induced draft fan; when the waste gas is not required to be treated, the first valve and the fourth valve can be selectively opened, and other valves are closed, so that the waste gas treated by the front-stage dust collecting device can be directly discharged by the induced draft fan without passing through the waste gas treatment tower;
a packing bed layer is also arranged in the tower body and is arranged between the gas distribution device and the liquid distributor; the filler bed layer can be flexibly replaced by adopting the pipeline connection, for example, when the filler bed layer needs to be replaced in the first waste gas treatment tower, the first valve can be selectively opened and the fourth valve can be closed, and at the moment, waste gas enters the second waste gas treatment tower through the first branch for treatment; when the second waste gas treatment tower needs to replace the packing bed layer, the first valve can be selectively closed and the fourth valve can be opened, at the moment, waste gas enters the first waste gas treatment tower for treatment through the first pipeline, and treated gas enters the induced draft fan through the second branch for discharge;
the foreline dust collecting device is equipped with first dust collecting unit and second dust collecting unit in proper order along the gas flow direction in, first dust collecting unit is used for collecting the solid particle that the particle size is not less than first diameter, the second dust collecting unit is used for collecting the solid particle that the particle size is not less than the second diameter.
2. The exhaust gas treatment system according to claim 1, wherein each of the first exhaust gas treatment tower and the second exhaust gas treatment tower comprises a storage tank, a tower body and a circulation pump, the tower body is disposed at an upper portion of the storage tank, an interior of the tower body communicates with an interior of the storage tank, an inlet of the circulation pump communicates with the storage tank through a first circulation line, an outlet of the circulation pump communicates with the tower body through a second circulation line,
and an absorbent solution for absorbing impurities in the gas to be treated is stored in the storage tank.
3. The waste gas treatment system of claim 2, wherein the tower body is provided with a gas inlet and a gas outlet, the gas inlet is used for gas to be treated to enter the tower body, the gas outlet is used for treated gas to exit the tower body, the gas inlet is arranged on the tower body close to the storage tank, and the gas outlet is arranged at the top of the tower body.
4. An effluent treatment system as claimed in claim 3 wherein gas distribution means is provided within said tower and is connected to said gas inlet to enable gas entering from said gas inlet to be distributed uniformly within said tower.
5. An effluent treatment system as claimed in claim 3 wherein a liquid distributor is located within the tower adjacent said gas outlet, said liquid distributor communicating with said second recirculation conduit so that liquid entering from said second recirculation conduit is evenly distributed within said tower.
6. An effluent treatment system as claimed in claim 5 wherein a demister is provided within the column for removing entrained foam from the treated gas, the demister being disposed between the outlet and the liquid distributor.
7. The exhaust treatment system of claim 1, further comprising an exhaust device connected to an outlet of the induced draft fan through a second exhaust line, wherein an exhaust outlet of the exhaust device is spaced from the ground by a distance of not less than 15 m.
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| CN108579406A (en) * | 2018-02-05 | 2018-09-28 | 江苏新聚环保技术有限公司 | A kind of new polycyclic guarantor advanced oxidation wheeled apparatus |
| KR20200069536A (en) * | 2018-12-07 | 2020-06-17 | 삼성전자주식회사 | Water purifier and control method of the same |
| CN111729462A (en) * | 2020-07-03 | 2020-10-02 | 江苏兴达钢帘线股份有限公司 | Exhaust gas treatment system and exhaust gas treatment method |
| CN112325157A (en) * | 2020-10-22 | 2021-02-05 | 邬春杨 | Industrial production waste gas administers environmental protection equipment |
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| CN206198963U (en) * | 2016-11-03 | 2017-05-31 | 浙江邦成化工有限公司 | A kind of waste gas centralized processor in β nicotinamide mononucleotides production technology |
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| CN103537173A (en) * | 2013-11-07 | 2014-01-29 | 中国海洋石油总公司 | Pilot-scale experiment device of gas-liquid mass transfer tower with switchable series-parallel connection |
| CN203750382U (en) * | 2014-02-28 | 2014-08-06 | 苏州格胜环保设备有限公司 | Double-tower type waste gas treatment device |
| CN104888585A (en) * | 2015-06-17 | 2015-09-09 | 苏州斯洛莱自动化设备有限公司 | Efficient waste gas spray device |
| CN206198963U (en) * | 2016-11-03 | 2017-05-31 | 浙江邦成化工有限公司 | A kind of waste gas centralized processor in β nicotinamide mononucleotides production technology |
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