CN115554824A - Gaseous multi-pollutant combined removal device - Google Patents
Gaseous multi-pollutant combined removal device Download PDFInfo
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- CN115554824A CN115554824A CN202211161472.6A CN202211161472A CN115554824A CN 115554824 A CN115554824 A CN 115554824A CN 202211161472 A CN202211161472 A CN 202211161472A CN 115554824 A CN115554824 A CN 115554824A
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims description 49
- 238000005406 washing Methods 0.000 claims description 48
- 239000007921 spray Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 23
- 231100000719 pollutant Toxicity 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 13
- 239000012855 volatile organic compound Substances 0.000 abstract description 12
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 238000004332 deodorization Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 54
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 3
- 238000009841 combustion method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003307 slaughter Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
- B01D53/323—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 electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
- B03C3/0175—Amassing particles by electric fields, e.g. agglomeration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a gas multi-pollutant combined removal device in the technical field of gas deodorization, dust removal and VOCs treatment, and aims to solve the problems of low treatment efficiency, high treatment cost, large equipment floor area and the like in the prior art. The invention not only removes dust and VOCs in the gas in a synergic manner, but also has the advantages of simple equipment, small occupied area and simple and convenient operation.
Description
Technical Field
The invention relates to a gas multi-pollutant combined removal device, and belongs to the technical field of gas deodorization, dust removal and VOCs treatment.
Background
In recent years, environmental regulations and emission standards for gaseous pollutants have become more stringent in order to improve and enhance the quality of ambient air. With the development of environmental protection treatment equipment, on-line monitoring technology, environmental management and the like, the traditional coal-fired flue gas SO 2 The emission of NOx and dust is obviously reduced, however, ozone and PM2.5 in part of urban ambient air show an increasing trend and become the primary factors influencing the quality of the ambient air.
The existing research proves that the substances such as active free radicals generated by VOCs under the irradiation of ultraviolet light are precursors of ozone and PM2.5, SO that the VOCs replace SO 2 The pollutants are listed as the primary control pollutants of the quality of the atmospheric environment. In addition, malodorous gases generated in the industries of domestic garbage storage, transportation and treatment, sewage treatment, livestock breeding and slaughtering, pharmaceutical chemical industry, rubber, leather and the like seriously affect the health and the quality of life of residents, the related complaints caused by the malodorous gases tend to increase year by year, and the treatment demand of the malodorous gases is increasingly strong.
The existing VOCs and malodorous gas treatment mainly comprises the following steps: combustion method, adsorption method, washing method, biodegradation method, low-temperature plasma method and the like, and one or more combined processes thereof. The combustion method is considered to be one of the most effective and widely applied VOCs treatment technologies at present, but the investment and operation cost are high, and the combustion method is not suitable for low-concentration VOCs, chlorinated organic compounds and malodorous gases. The biodegradation and low-temperature plasma are common low-concentration VOCs and malodorous gas treatment technologies at present, but the treatment efficiency is generally low, combined processes such as adsorption and washing are often accompanied, the system is complex, and the occupied area of equipment is large.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a combined removal device for multiple pollutants in gas, which not only has a good treatment effect on stink and VOCs in the gas, but also can remove dust in the gas in a synergistic manner, and has the advantages of simple equipment, small occupied area and simplicity and convenience in operation.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a gaseous many pollutants unites desorption device, includes the washing liquid storage box, be equipped with low temperature plasma body and spray column on the washing liquid storage box, low temperature plasma body top is equipped with gas inlet, the spray column top is equipped with gas outlet, and gas can loop through behind low temperature plasma body, washing liquid storage box and the spray column from the gas inlet in low temperature plasma body top gas outlet discharge in the spray column top after getting into.
Optionally, the low temperature plasma body includes a plurality of high-voltage discharge anode cylinders, the high-voltage discharge anode cylinder is laid in the middle of the low temperature plasma body, and a cathode line is arranged inside each high-voltage discharge anode cylinder.
Optionally, the high-voltage discharge anode tube further comprises a cathode line limiting grating plate arranged at the upper end and the lower end of the high-voltage discharge anode tube, a plurality of nodes are arranged on the cathode line limiting grating plate, each node corresponds to the center of the high-voltage discharge anode tube, the cathode line penetrates through the center of the high-voltage discharge anode tube, and the two ends of the cathode line are fixed at the corresponding node positions respectively.
Optionally, the high-voltage discharge anode cylinder is connected with one end of the boost voltage regulator, the other end of the boost voltage regulator is connected with the power supply, and the grounding electrode is connected with the cathode wire limiting grating plate.
Optionally, the spray tower is sequentially provided with a demister and a spray layer from top to bottom, the spray layer is used for absorbing gas pollutants generated by low-temperature plasma oxidation and decomposition and washing fine dust in purified gas, and the demister is used for removing liquid drops carried in the washed gas.
Optionally, the number of the spraying layers is 2, and the two spraying layers are both provided with an inspection manhole above the demister.
Optionally, the washing liquid storage box comprises a washing liquid inlet and a washing liquid outlet, the washing liquid inlet is arranged at the upper part of one side, and the washing liquid outlet is arranged at the lower part of the other side.
Optionally, still include and be used for monitoring the washing liquid level's in the washing liquid storage box level gauge, one side of washing liquid storage box is located to the level gauge.
Optionally, an inclined slurry guide plate is arranged at the bottom of the washing liquid storage box, and the lower side of the slurry guide plate is located at the washing liquid outlet.
Compared with the prior art, the invention has the following beneficial effects:
the invention combines low-temperature plasma, liquid-phase washing and inertial dust removal technologies, and can effectively and synergistically purify various organic and inorganic gaseous pollutants such as dust, VOCs, stink, heavy metals and the like in the gas;
on one hand, a uniform low-temperature plasma discharge area is formed in the anode cylinder by utilizing high-voltage discharge, gaseous pollutants are decomposed or oxidized by utilizing active free radicals such as high-energy electrons, O and OH generated by partial gas ionization, and the oxidized pollutants are sprayed, dissolved and absorbed by a washing tower, so that the aim of gas purification is fulfilled;
on the other hand, by means of a low-temperature plasma high-voltage electric field, dust generates charge and agglomeration effects and is separated from gas under the synergistic effect of gravity, inertia force and turning centrifugal force;
compared with the traditional treatment technology, the method has the advantages that low-temperature plasma and liquid-phase diffusion absorption are coupled, the particle agglomeration effect and the strengthening effect of various force fields are combined, the synergistic removal effect of various pollutants in gas is realized, and the method has the advantages of high economy, good treatment effect, small equipment floor area and the like.
Drawings
FIG. 1 is a schematic front view of a combined gas multi-pollutant removal device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cathode wire position-limiting grid plate of a combined gas multi-pollutant removal device according to an embodiment of the present invention;
in the figure: 1 washing liquid storage box, 2 low temperature plasma bodies, 3 spray towers, 4 negative pole lines, 5 high-pressure discharge anode cylinders, 6 negative pole line limit grating plate, 7 washing liquid import, 8 mud guide plate, 9 step-up voltage regulator, 10 power, 11 gas inlets, 12 spray layers, 13 defroster, 14 maintenance manholes, 15 gas outlets, 16 level gauge, 17 washing liquid outlets.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1:
as shown in fig. 1, the device for removing multiple gaseous pollutants in combination provided by the embodiment of the present invention includes a washing liquid storage tank 1, and a low-temperature plasma body 2 and a spray tower 3 are disposed on the washing liquid storage tank 1. The cross section of the low-temperature plasma body 2 is rectangular, but the low-temperature plasma body is not limited to the rectangular cross section, and other shapes which do not influence the use are also possible.
The low-temperature plasma body 2 is internally provided with a plurality of high-voltage discharge anode cylinders 5 in the middle, the upper end and the lower end of each high-voltage discharge anode cylinder 5 are respectively provided with a cathode line limiting grating plate 6, the shape of each cathode line limiting grating plate 6 is matched with the shape of the low-temperature plasma body 2, the cathode line limiting grating plates are arranged in a rectangular grid mode, and a plurality of uniformly arranged nodes are arranged on the cathode line limiting grating plates 6.
As shown in fig. 2, the position of each node corresponds to the center of each high-voltage discharge anode cylinder 5, the cathode line 4 penetrates through the center of the high-voltage discharge anode cylinder 5, and the two ends of the cathode line are fixed to the corresponding nodes on the cathode line limiting grid plate 6. A high voltage discharge phenomenon occurs on each cathode line 4 to generate a uniform low temperature plasma discharge region.
The high-voltage end of the booster voltage regulator 9 is connected with the high-voltage discharge anode cylinder 5, the low-voltage end of the booster voltage regulator is connected with the power supply 10, and the grounding electrode is connected with the cathode wire limiting grid plate 6. The voltage of the booster voltage regulator 9 is provided by an alternating current power supply, the discharge intensity and the electron density of the low-temperature plasma region are regulated, and the effective regulation of the quantity and the types of the active free radicals can be realized so as to meet the market demands of treatment of different concentrations and gaseous pollutant components.
The top of the low-temperature plasma body 2 is provided with a gas inlet 11, the top of the spray tower 3 is provided with a gas outlet 15, and gas enters from the gas inlet 11 and then passes through the low-temperature plasma body 2, the washing liquid storage box 1 and the spray tower 3 in sequence and then is discharged from the gas outlet 15.
Example 2:
on the basis of embodiment 1, the spray tower 3 of the present embodiment is provided with a demister 13 and two spray layers 12 in sequence from top to bottom, the spray layers 12 are used for absorbing gas pollutants oxidized and decomposed by low-temperature plasma and washing fine dust in purified gas, and the demister 13 is used for removing liquid droplets entrained in the gas. The gas is absorbed and dissolved by the spraying washing liquid in the process of flowing from bottom to top in the spraying tower 3, and the purified gas is discharged from a gas outlet 15 at the top after water vapor is removed by a demister 13.
All be equipped with maintenance manhole 14 in the middle of spraying layer 12 and the defroster 13 top, make things convenient for the staff to overhaul the operation to the device.
The bottom of the washing liquid storage box 1 is provided with a slurry guide plate 8, the slurry guide plate 8 is obliquely arranged, the upper part of the higher side is provided with a washing liquid inlet 7, the lower side is provided with a washing liquid outlet 17, and a liquid level meter 16 used for monitoring the liquid level of the washing liquid in the storage box is further arranged on one side of the washing liquid outlet 17.
The working principle of the invention is as follows: gas containing dust and multi-component pollutants enters the low-temperature plasma body 2 through the gas inlet 11 and flows from top to bottom, and after the voltage of the power supply 10 is boosted by the boosting pressure regulator 9, a high-voltage plasma discharge area is formed between the connected high-voltage discharge anode cylinder 5 and the cathode wire 4.
At this time, the gas is partially ionized through the high-voltage plasma discharge region, the generated high-energy electrons, active free radicals such as O and OH and the like decompose or oxidize gaseous pollutants into substances which are easily dissolved in water, and partial particles are charged and generate an agglomeration effect.
The gas flows vertically downwards after leaving the high-pressure plasma discharge area, collides with the surface of the washing liquid in the washing liquid storage box 1 and flows tangentially, the flowing direction of the gas is turned by 180 degrees, and dust in the gas is separated from the gas under the combined action of gravity, inertia and centrifugal force generated by turning of the gas flow in the process and is collected by the surface of the washing liquid.
The gas with 180-degree turning direction enters the spray tower 3 from the lower part and is in countercurrent contact with the spray liquid from the two spray layers 12, and the gas is dissolved and absorbed by the gaseous pollutants which are decomposed or oxidized into water-soluble gas, thereby playing the role of purifying the gas. The purified gas is discharged from a gas outlet 15 at the top of the spray tower 3 after liquid droplets are removed by a demister 13.
The invention can realize the purposes of gas dust removal, deodorization, VOCs purification, heavy metal removal and other multiple pollutants cooperative purification.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A gaseous many pollutants unites desorption device which characterized in that: including the washing liquid storage box, be equipped with low temperature plasma body and spray column on the washing liquid storage box, low temperature plasma body top is equipped with gas inlet, the spray column top is equipped with the gas outlet, and gas loops through behind low temperature plasma body, washing liquid storage box and the spray column behind the gas inlet gets into from the gas outlet of spray column top behind low temperature plasma body, the washing liquid storage box and the spray column.
2. A combined gas multi-pollutant removal device according to claim 1, characterized in that: the low-temperature plasma body comprises a plurality of high-voltage discharge anode cylinders, the high-voltage discharge anode cylinders are arranged in the middle of the low-temperature plasma body, and cathode lines are arranged in the high-voltage discharge anode cylinders.
3. A combined removal unit for multiple pollutants from a gas as claimed in claim 2, wherein: the high-voltage discharge anode tube is characterized by further comprising cathode line limiting grating plates arranged at the upper end and the lower end of the high-voltage discharge anode tube, a plurality of nodes are arranged on the cathode line limiting grating plates, each node corresponds to the center of the high-voltage discharge anode tube respectively, the cathode lines penetrate through the center of the high-voltage discharge anode tube, and the two ends of each cathode line are fixed in the corresponding node positions respectively.
4. A combined gas multi-pollutant removal device according to claim 3, characterized in that: the high-voltage discharge anode cylinder is connected with one end of a boosting voltage regulator, the other end of the boosting voltage regulator is connected with a power supply, and an earth electrode is connected with a cathode wire limiting grating plate.
5. The combined removal device for multiple gaseous pollutants according to claim 1, characterized in that: the spray tower is provided with a demister and a spray layer from top to bottom in sequence, the spray layer is used for separating and absorbing pollutants in gas, and the demister is used for removing liquid drops in the gas.
6. A combined gas multi-pollutant removal device according to claim 5, characterized in that: spray layer quantity and be 2, two-layerly spray in the middle of the layer and the defroster top all is equipped with the maintenance manhole.
7. A combined gas multi-pollutant removal device according to claim 1, characterized in that: the washing liquid storage box comprises a washing liquid inlet and a washing liquid outlet, the washing liquid inlet is arranged at the upper part of one side, and the washing liquid outlet is arranged at the lower part of the other side.
8. The combined removal device of multi-pollutants for gas of claim 7, wherein: still including being used for the monitoring the level gauge of washing liquid level in the washing liquid storage box, one side of washing liquid storage box is located to the level gauge.
9. The combined removal device of multi-pollutants for gas of claim 7, wherein: the bottom of the washing liquid storage box is provided with an inclined slurry guide plate, and the lower side of the slurry guide plate is positioned at the washing liquid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211161472.6A CN115554824A (en) | 2022-09-23 | 2022-09-23 | Gaseous multi-pollutant combined removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211161472.6A CN115554824A (en) | 2022-09-23 | 2022-09-23 | Gaseous multi-pollutant combined removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115554824A true CN115554824A (en) | 2023-01-03 |
Family
ID=84742050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211161472.6A Withdrawn CN115554824A (en) | 2022-09-23 | 2022-09-23 | Gaseous multi-pollutant combined removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115554824A (en) |
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2022
- 2022-09-23 CN CN202211161472.6A patent/CN115554824A/en not_active Withdrawn
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Application publication date: 20230103 |
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