CN116920536A - Coal-fired flue gas and desulfurization waste water treatment device - Google Patents
Coal-fired flue gas and desulfurization waste water treatment device Download PDFInfo
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- CN116920536A CN116920536A CN202310541523.6A CN202310541523A CN116920536A CN 116920536 A CN116920536 A CN 116920536A CN 202310541523 A CN202310541523 A CN 202310541523A CN 116920536 A CN116920536 A CN 116920536A
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- flue gas
- coal
- purification
- fired flue
- desulfurization wastewater
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000003546 flue gas Substances 0.000 title claims abstract description 128
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 99
- 230000023556 desulfurization Effects 0.000 title claims abstract description 99
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 37
- 238000000746 purification Methods 0.000 claims abstract description 120
- 239000002351 wastewater Substances 0.000 claims abstract description 60
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 29
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 18
- 230000000712 assembly Effects 0.000 claims description 16
- 238000000429 assembly Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/79—Regeneration of the filtering material or filter elements inside the filter by liquid process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The application provides a coal-fired flue gas and desulfurization wastewater treatment device, and relates to the technical field of environmental protection. The coal-fired flue gas and desulfurization wastewater treatment device comprises: the treatment box is provided with a flue gas inlet, a flue gas outlet and a sewage outlet; the multi-layer purification assembly is arranged in the treatment box in a layered manner and is used for filtering heavy metals and particulate matters in the coal-fired flue gas entering the treatment box from the flue gas inlet; the spraying assembly is arranged in the treatment box and is used for spraying desulfurization wastewater to the purification assembly so as to flush heavy metals and particulate matters filtered by the purification assembly; wherein, the multilayer purification assembly can also neutralize the pH value of desulfurization waste water. The coal-fired flue gas and desulfurization wastewater treatment device provided by the application solves the problem that coal-fired flue gas generated in the power generation process of a coal-fired power plant and desulfurization wastewater generated after desulfurization of the coal-fired flue gas cannot be treated simultaneously in the prior art, so that waste is reused, and the treatment cost of the coal-fired flue gas and the desulfurization wastewater is reduced.
Description
Technical Field
The application relates to the technical field of environmental protection, in particular to a coal-fired flue gas and desulfurization wastewater treatment device.
Background
In a flue gas desulfurization system of a coal-fired power plant, tail end produced water is desulfurization wastewater, the desulfurization wastewater is the most difficult to treat in the power plant due to low pH, high salt content and a large amount of heavy metals, and along with the implementation of a series of water pollution control policy regulations such as water pollution control action plan (2015), implementation of pollutant emission control permission system (2016), pollution control technical policy of a thermal power plant (2017), wastewater treatment design specification of a power plant (2018) and the like, wastewater emission reduction, reuse and zero emission are also important tasks of the coal-fired power plant.
Therefore, there is a need for a device capable of treating coal-fired flue gas generated in the power generation process of a coal-fired power plant and desulfurization wastewater discharged from the coal-fired flue gas in the desulfurization process.
Disclosure of Invention
The embodiment of the application aims to provide a coal-fired flue gas and desulfurization wastewater treatment device which is used for solving the problem that coal-fired flue gas generated in the power generation process of a coal-fired power plant and desulfurization wastewater generated after desulfurization of the coal-fired flue gas cannot be treated simultaneously in the prior art.
In order to achieve the above object, the present application provides a coal-fired flue gas and desulfurization wastewater treatment apparatus comprising:
the treatment box is provided with a flue gas inlet, a flue gas outlet and a sewage outlet;
the multi-layer purification assemblies are arranged in the treatment box in a layered manner, each purification assembly is perpendicular to the extending direction of the flue gas inlet, and the purification assemblies are used for filtering heavy metals and particulate matters in the coal-fired flue gas entering the treatment box from the flue gas inlet;
the spraying assembly is arranged in the treatment box and is used for spraying desulfurization wastewater to the purification assembly so as to flush heavy metals and particulate matters filtered by the purification assembly;
wherein, the multilayer purification assembly can also neutralize the pH value of desulfurization waste water.
Specifically, each purification assembly includes: a pair of purification trays and purification brackets;
the purification bracket is arranged in the treatment box and is fixed with the wall of the treatment box;
the purifying support is movably provided with a pair of purifying trays, filtering materials for filtering heavy metals and particles in the coal-fired flue gas are paved in each purifying tray, and the bottom of each purifying tray is of a net structure.
Specifically, the filter material is steel slag.
Specifically, each purification assembly further comprises: the filter material is paved in each grid groove.
Specifically, the bottom of each purification tray is provided with the gyro wheel, be provided with on the purification support with the guide rail of gyro wheel adaptation, each purification tray passes through the gyro wheel activity and sets up on the guide rail of purification support.
Specifically, the treatment box is also provided with a plurality of pairs of tray inlets and outlets corresponding to the number of the purification brackets, each pair of tray inlets and outlets are symmetrically arranged on the box walls of the treatment box at two sides of the purification brackets, and each purification tray enters and exits the treatment box through the corresponding tray inlet and outlet.
Specifically, the spray assembly includes: the spray pump, the main pipe and the plurality of branch pipes;
the plurality of branch pipes are arranged in parallel below the flue gas inlet in the treatment box, a plurality of water outlets are formed along the extending direction of each branch pipe, each branch pipe is communicated with the main pipe, and the spray pump sprays desulfurization wastewater to the purification assembly through the main pipe and each branch pipe.
Specifically, the coal-fired flue gas and desulfurization wastewater treatment device further comprises: and the flue gas concentration detector is arranged at the flue gas outlet and used for detecting the concentration of the filtered coal-fired flue gas.
Specifically, the coal-fired flue gas and desulfurization wastewater treatment device further comprises: and the alarm is arranged on the treatment box, is electrically connected with the flue gas concentration detector and is used for sending out corresponding early warning prompts according to the concentration of the filtered coal-fired flue gas.
Specifically, the coal-fired flue gas and desulfurization wastewater treatment device further comprises: the PH value tester is arranged at the sewage outlet and used for detecting the PH value of the desulfurization wastewater neutralized by the purification component.
The application provides a coal-fired flue gas and desulfurization waste water treatment device, wherein a plurality of layers of purification components are arranged in a treatment box, heavy metals and particulate matters in the coal-fired flue gas entering the treatment box from a flue gas inlet are filtered through the purification components, in order to improve the filtering effect of the purification components, desulfurization waste water is sprayed on the purification components through a spraying component after the purification components are filtered for a period of time, so that the filtering effect of the coal-fired flue gas is ensured by flushing the heavy metals and particulate matters filtered out by the purification components through the desulfurization waste water, the purification components can neutralize the pH value of the desulfurization waste water and filter the heavy metals in the desulfurization waste water in the process of flushing the purification components, thereby completing the filtering treatment of the coal-fired flue gas and the neutralization treatment and the filtering treatment of the pH value of the desulfurization waste water.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
FIG. 1 is a schematic diagram of a coal-fired flue gas and desulfurization wastewater treatment device provided by the application;
FIG. 2 is a schematic diagram of the structure of a pair of purification trays in the coal-fired flue gas and desulfurization wastewater treatment device provided by the application;
FIG. 3 is a schematic diagram of the structure of a purification bracket in the coal-fired flue gas and desulfurization wastewater treatment device provided by the application;
FIG. 4 is a schematic bottom view of a purification tray in the coal-fired flue gas and desulfurization wastewater treatment apparatus provided by the present application;
FIG. 5 is a schematic diagram showing the arrangement of branch pipes in the coal-fired flue gas and desulfurization wastewater treatment device provided by the application.
Description of the reference numerals
1-a treatment box; 2-a purification assembly; 3-a spray assembly; 11-a flue gas inlet; 12-a flue gas outlet; 13-a sewage outlet; 14-a tray access; 15-cover plate; 16-an electric valve; 21-a purge tray; 22-purifying support; 23-dividing plates; 221-guiding tracks; 31-a spray pump; 32-a main pipe; 33-branch pipes.
Detailed Description
The following describes the detailed implementation of the embodiments of the present application with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
FIG. 1 is a schematic diagram of a coal-fired flue gas and desulfurization wastewater treatment plant; FIG. 2 is a schematic diagram of the structure of a pair of cleaning trays in a coal-fired flue gas and desulfurization wastewater treatment plant; FIG. 3 is a schematic diagram of the structure of a purification rack in a coal-fired flue gas and desulfurization wastewater treatment device; FIG. 4 is a schematic bottom view of a purification tray in a coal-fired flue gas and desulfurization wastewater treatment plant; FIG. 5 is a schematic diagram of the arrangement of the branch pipes in the coal-fired flue gas and desulfurization wastewater treatment apparatus. As shown in fig. 1 to 5, the present application provides a coal-fired flue gas and desulfurization wastewater treatment apparatus comprising:
a treatment tank 1 having a flue gas inlet 11, a flue gas outlet 12 and a sewage outlet 13;
the multi-layer purification assemblies 2 are arranged in the treatment box 1 in a layered manner, each purification assembly 2 is perpendicular to the extending direction of the flue gas inlet 11, and the purification assemblies 2 are used for filtering heavy metals and particulate matters in the coal-fired flue gas entering the treatment box 1 from the flue gas inlet 11;
the spraying assembly 3 is arranged in the treatment box 1 and is used for spraying desulfurization wastewater to the purification assembly 2 so as to wash heavy metals and particulate matters filtered by the purification assembly 2;
wherein, the multi-layer purification assembly 2 can also neutralize the pH value of desulfurization wastewater.
In order to ensure that the coal-fired flue gas can be fully contacted with the purification assemblies 2 to filter heavy metals and particulate matters in the coal-fired flue gas through the purification assemblies 2, the multiple purification assemblies 2 are horizontally arranged and mutually parallel as shown in fig. 1, a flue gas outlet 12 is arranged at the top of the treatment box 1, the extending direction of the flue gas outlet 12 is perpendicular to each purification assembly 2, and the flue gas outlet 12 is arranged in an inverted horn shape, so that the larger the opening of one end of the flue gas outlet 12, which is close to the purification assemblies 2, is, the better the coal-fired flue gas can be contacted with each layer of purification assemblies 2 after entering the treatment box 1 so as to filter heavy metals and particulate matters with different granularity in the coal-fired flue gas through each layer of purification assemblies 2, so that the coal-fired flue gas can be fully purified, and after the coal-fired flue gas is filtered by the purification assemblies 2, the coal-fired flue gas is discharged from the flue gas outlet 12 arranged on the side wall of the treatment box 1. After filtering coal-fired flue gas for a period of time, the purification assembly 2 can accumulate more and more heavy metals and particulate matters on the purification assembly 2, thereby influence the filter effect of the purification assembly 2, at this moment, spray desulfurization waste water to the purification assembly 2 through spray assembly 3, wash away heavy metals and particulate matters that accumulate on the purification assembly 2 through the desulfurization waste water that sprays, thereby resume the filter effect of purification assembly 2 to coal-fired flue gas, the filter media in the purification assembly 2 can also neutralize the pH value of desulfurization waste water and filter the heavy metals in the desulfurization waste water when washing the heavy metals and particulate matters on the purification assembly 2, thereby realize the filtration treatment to desulfurization waste water, desulfurization waste water after the filtration treatment of purification assembly 2 is discharged through the sewage outlet 13 of seting up in the bottom of the treatment box 1. The filter material in the purification component 2 is steel slag, so that desulfurization waste water and steel slag waste are utilized, desulfurization waste water is purified, the problem that coal-fired flue gas generated in the power generation process of a coal-fired power plant and desulfurization waste water generated after desulfurization of the coal-fired flue gas cannot be treated simultaneously in the prior art is solved, and the treatment cost of the coal-fired flue gas and the desulfurization waste water is reduced.
In one embodiment, to facilitate disassembly and assembly of the decontamination assemblies 2, as shown in fig. 2-4, each decontamination assembly 2 includes: a pair of purge trays 21 and purge holders 22;
the purifying bracket 22 is arranged in the processing box 1 and is fixed with the box wall of the processing box 1;
a pair of purifying trays 21 are movably arranged on the purifying bracket 22, filtering materials for filtering heavy metals and particles in the coal-fired flue gas are paved in each purifying tray 21, and the bottom of each purifying tray 21 is of a net structure.
Specifically, each purification assembly 2 further comprises: a plurality of partition plates 23 are provided in each of the purge trays 21 so as to cross the inside of the purge tray 21 into a plurality of grill grooves, and a filter material is laid in each of the grill grooves.
Specifically, the bottom of each cleaning tray 21 is provided with a roller, the cleaning support 22 is provided with a guide rail 221 adapted to the roller, and each cleaning tray 21 is movably arranged on the guide rail 221 of the cleaning support 22 through the roller.
Specifically, the treatment box 1 is further provided with a plurality of pairs of tray inlets and outlets 14 corresponding to the number of the purification brackets 22, each pair of tray inlets and outlets 14 is symmetrically arranged on the box wall of the treatment box 1 at two sides of the purification bracket 22, and each purification tray 21 enters and exits the treatment box 1 through the corresponding tray inlet and outlet 14.
A pair of purifying brackets 22 are welded on the inner side wall of the treatment box 1 in a layered manner, a pair of purifying trays 21 are respectively arranged on each layer of purifying brackets 22, a pair of tray inlets and outlets 14 are arranged on the wall of the treatment box 1 at positions corresponding to each layer of purifying brackets 22, and the pair of tray inlets and outlets 14 are symmetrically arranged on two sides of the corresponding layer of purifying brackets 22, so that the pair of purifying trays 21 of the layer can enter the treatment box 1 through the corresponding tray inlets and outlets 14 and are supported and arranged in the treatment box 1 through the purifying brackets 22, each purifying tray 21 is divided into a plurality of grid grooves by a partition plate 23, filter material steel slag is filled in each grid groove, honeycomb-shaped air holes are formed in the surface of the steel slag, particles can be adsorbed, and meanwhile, the steel slag contains a large amount of alkaline oxides such as CaO, can neutralize the pH value of desulfurization waste water and can filter heavy metals in the desulfurization waste water through the steel slag. The bottom of the purification tray 21 is of a net structure, so that coal-fired flue gas and desulfurization wastewater can pass through the purification tray 21 conveniently after passing through the filter material. In order to facilitate the purification trays 21 to enter the treatment box 1 through the corresponding tray inlets and outlets 14 and be arranged on the purification support 22, rollers are arranged at the bottom of each purification tray 21, guide rails 221 are arranged on the purification support 22, and the rollers roll into the treatment box 1 along the guide rails 221, so that the task of replacing filter materials in the purification trays 21 is conveniently carried out by staff.
In one embodiment, in order to facilitate the replacement of the purifying tray 21 on each layer of the purifying support 22 in the processing box 1 by the staff, a working platform is arranged outside the processing box 1 corresponding to each layer of the tray inlet and outlet 14, the working platform on the same side is connected through a ladder stand, a cover plate 15 is hinged at each tray inlet and outlet 14, the cover plate 15 can be opened and closed, the control cover plate 15 can close the corresponding tray inlet and outlet 14, the control cover plate 15 can be opened to expose the corresponding tray inlet and outlet 14, when the filtering material in the purifying tray 21 is replaced, the cover plate 15 is opened, the purifying tray 21 is pulled out from the tray inlet and outlet 14, the filtering material in the purifying tray 21 is replaced, and then the purifying tray 21 is pushed into the processing box 1 again from the tray inlet and outlet 14.
In order to ensure the filtering effect of the purifying assembly 2 on the coal-fired flue gas, the spraying assembly 3 comprises: a shower pump 31, a main pipe 32, and a plurality of branch pipes 33;
the plurality of branch pipes 33 are arranged in parallel below the flue gas inlet 11 in the treatment tank 1, a plurality of water outlets are formed along the extending direction of each branch pipe 33, each branch pipe 33 is communicated with the main pipe 32, and the spray pump 31 sprays desulfurization wastewater to the purification assembly 2 through the main pipe 32 and each branch pipe 33.
After the purification assembly 2 is used for a period of time, excessive heavy metals and particulate matters are attached to the filter materials of the purification assembly 2, the filter materials are steel slag, so that the filtering effect of coal-fired flue gas is affected, at this time, the spray pump 31 sprays desulfurization waste water onto the purification assembly 2 through the main pipe 32 and the plurality of branch pipes 33, the heavy metals and the particulate matters attached to the steel slag are washed out through the desulfurization waste water, the filtering performance of the steel slag is recovered, and in order to ensure that the desulfurization waste water can wash out the heavy metals and the particulate matters attached to the steel slag as much as possible, the duration of washing the purification assembly 2 can last for a given duration, for example, the duration of each time the spray assembly 3 washes the purification assembly 2 is not less than 10min, and the washing is repeated for not less than three times. In the process of the desulfurization waste water contacting with the steel slag, the alkaline oxide in the steel slag simultaneously neutralizes the pH value of the desulfurization waste water and filters heavy metals in the desulfurization waste water, thereby realizing the treatment of the coal-fired flue gas and the desulfurization waste water.
In order to ensure the filtering effect of the purification assembly 2, the coal-fired flue gas and desulfurization wastewater treatment apparatus further includes: and a flue gas concentration detector, which is arranged at the flue gas outlet 12 and is used for detecting the concentration of the filtered coal-fired flue gas. The coal-fired flue gas and desulfurization wastewater treatment device further comprises: the alarm is arranged on the processing box 1, is electrically connected with the flue gas concentration detector and is used for sending out corresponding early warning prompts according to the concentration of the filtered coal-fired flue gas.
The concentration of the filtered coal-fired flue gas discharged from the flue gas outlet 12 is detected in real time through the flue gas concentration detector, the filtering effect of the purification assembly 2 is judged according to the detected concentration of the filtered coal-fired flue gas, when the detected concentration of the filtered coal-fired flue gas is larger than the set flue gas concentration, the filtering effect of the purification assembly 2 is reduced, the filter material of the purification assembly 2 needs to be washed in time, after the filter material of the purification assembly 2 is washed, the filter material in the purification assembly 2 needs to be replaced when the detected concentration of the filtered coal-fired flue gas is still larger than the set flue gas concentration, and in order to remind workers that the concentration of the filtered coal-fired flue gas is not up to standard, when the detected concentration of the coal-fired flue gas is larger than the set flue gas concentration, an alarm is sent out to give an alarm prompt to remind workers to wash the filter material of the purification assembly 2 in time or replace the filter material in the purification assembly 2.
In order to ensure that the pH value of the treated desulfurization wastewater can meet the specified requirement, the coal-fired flue gas and desulfurization wastewater treatment device further comprises: the PH value tester is arranged at the sewage outlet 13 and is used for detecting the PH value of the desulfurization wastewater neutralized by the purification component 2. The PH value of the desulfurization waste water neutralized by the purification assembly 2 discharged from the sewage outlet 13 is detected by a PH value tester, and when the PH value of the discharged desulfurization waste water is detected to not meet the specified requirement, the filter materials in the purification assembly 2 should be replaced in time so as to ensure that the PH value of the desulfurization waste water can be effectively neutralized.
In one embodiment, an electric valve 16 is arranged at the sewage outlet 13, and the sewage outlet 13 is controlled to be blocked or unblocked by the electric valve 16, so that the treated desulfurization wastewater can be conveniently and rapidly discharged out of the treatment tank 1 after being neutralized by the purification assembly 2, as shown in fig. 1, the bottom of the treatment tank 1 is designed to be in a slope structure, and the treated desulfurization wastewater can be conveniently and smoothly discharged.
The application provides a coal-fired flue gas and desulfurization waste water treatment device, wherein a plurality of layers of purification components are arranged in a treatment box, heavy metals and particulate matters in the coal-fired flue gas entering the treatment box from a flue gas inlet are filtered through the purification components, in order to improve the filtering effect of the purification components, desulfurization waste water is sprayed on the purification components through a spraying component after the purification components are filtered for a period of time, so that the filtering effect of the coal-fired flue gas is ensured by flushing the heavy metals and particulate matters filtered out by the purification components through the desulfurization waste water, the purification components can neutralize the pH value of the desulfurization waste water and filter the heavy metals in the desulfurization waste water in the process of flushing the purification components, thereby completing the filtering treatment of the coal-fired flue gas and the neutralization treatment and the filtering treatment of the pH value of the desulfurization waste water.
The foregoing details of the optional implementation of the embodiment of the present application have been described in detail with reference to the accompanying drawings, but the embodiment of the present application is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present application within the scope of the technical concept of the embodiment of the present application, and these simple modifications all fall within the protection scope of the embodiment of the present application.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations of embodiments of the present application are not described in detail.
Those skilled in the art will appreciate that all or part of the steps in implementing the methods of the embodiments described above may be implemented by a program stored in a storage medium, including instructions for causing a single-chip microcomputer, chip or processor (processor) to perform all or part of the steps of the methods of the embodiments described herein. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In addition, any combination of various embodiments of the present application may be performed, so long as the concept of the embodiments of the present application is not violated, and the disclosure of the embodiments of the present application should also be considered.
Claims (10)
1. A coal-fired flue gas and desulfurization wastewater treatment device, characterized in that the coal-fired flue gas and desulfurization wastewater treatment device comprises:
a treatment box (1) provided with a flue gas inlet (11), a flue gas outlet (12) and a sewage outlet (13);
the multi-layer purification assemblies (2) are arranged in the treatment box (1) in a layered manner, each purification assembly (2) is perpendicular to the extending direction of the flue gas inlet (11), and the purification assemblies (2) are used for filtering heavy metals and particulate matters in the coal-fired flue gas entering the treatment box (1) from the flue gas inlet (11);
the spraying assembly (3) is arranged in the treatment box (1) and is used for spraying desulfurization wastewater to the purifying assembly (2) so as to flush heavy metals and particulate matters filtered by the purifying assembly (2);
wherein, the multi-layer purification component (2) can also neutralize the PH value of desulfurization wastewater.
2. The coal-fired flue gas and desulfurization wastewater treatment apparatus according to claim 1, wherein each of the purification assemblies (2) comprises: a pair of purge trays (21) and a purge rack (22);
the purifying bracket (22) is arranged in the processing box (1) and is fixed with the box wall of the processing box (1);
a pair of purification trays (21) are movably arranged on the purification support (22), filter materials for filtering heavy metals and particles in the coal-fired flue gas are paved in each purification tray (21), and the bottom of each purification tray (21) is of a net structure.
3. The apparatus for treating coal-fired flue gas and desulfurization wastewater according to claim 2, wherein the filter material is steel slag.
4. The coal-fired flue gas and desulfurization wastewater treatment apparatus according to claim 2, wherein each of the purification assemblies (2) further comprises: a plurality of separation plates (23), a plurality of separation plates (23) are arranged in each purification tray (21) in a crossing way so as to separate a plurality of grid grooves in the purification tray (21), and filtering materials are paved in each grid groove.
5. The coal-fired flue gas and desulfurization wastewater treatment device according to claim 2, wherein rollers are arranged at the bottom of each purification tray (21), guide rails (221) matched with the rollers are arranged on the purification support (22), and each purification tray (21) is movably arranged on the guide rail (221) of the purification support (22) through the rollers.
6. The coal-fired flue gas and desulfurization wastewater treatment device according to claim 5, wherein the treatment tank (1) is further provided with a plurality of pairs of tray inlets and outlets (14) corresponding to the number of the purification brackets (22), each pair of tray inlets and outlets (14) is symmetrically arranged on the tank walls of the treatment tank (1) at two sides of the purification brackets (22), and each purification tray (21) enters and exits the treatment tank (1) through the corresponding tray inlet and outlet (14).
7. The coal-fired flue gas and desulfurization wastewater treatment apparatus according to claim 1, wherein the spray assembly (3) comprises: a spray pump (31), a main pipe (32) and a plurality of branch pipes (33);
the flue gas inlet (11) of many branch pipes (33) parallel arrangement each other are in the below of processing case (1), have seted up a plurality of delivery ports along the extending direction of every branch pipe (33), every branch pipe (33) with be responsible for (32) intercommunication, spray pump (31) are through be responsible for (32) and every branch pipe (33) to purification module (2) spray desulfurization waste water.
8. The coal-fired flue gas and desulfurization wastewater treatment apparatus according to claim 1, further comprising: and the flue gas concentration detector is arranged at the flue gas outlet (12) and is used for detecting the concentration of the filtered coal-fired flue gas.
9. The coal-fired flue gas and desulfurization wastewater treatment apparatus according to claim 8, further comprising: the alarm is arranged on the treatment box (1), is electrically connected with the flue gas concentration detector and is used for sending out corresponding early warning prompts according to the concentration of the filtered coal-fired flue gas.
10. The device for treating coal-fired flue gas and desulfurization wastewater according to claim 1, further comprising a PH tester arranged at the wastewater outlet (13) for detecting the PH value of desulfurization wastewater neutralized by the purification assembly (2).
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