CN212924465U - Ultralow-emission wastewater zero discharge system based on boiler flue gas - Google Patents
Ultralow-emission wastewater zero discharge system based on boiler flue gas Download PDFInfo
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- CN212924465U CN212924465U CN202021067412.4U CN202021067412U CN212924465U CN 212924465 U CN212924465 U CN 212924465U CN 202021067412 U CN202021067412 U CN 202021067412U CN 212924465 U CN212924465 U CN 212924465U
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Abstract
The utility model discloses an ultralow emission waste water zero release system based on boiler flue gas relates to waste water desulfurization technical field, and the investment that exists to the concentrated technology desulfurization waste water treatment method of traditional salt is high, the energy consumption is high, evaporimeter scale deposit and system corrosion and waste salt are useless admittedly as danger, the problem of difficult processing, now proposes following scheme, including boiler flue, drying tower, injection apparatus, electrostatic precipitator dust pelletizing system, wet flue gas desulfurization tower and effluent disposal system, boiler flue's end connection has dust remover flange, boiler flue is arranged in and is connected to dust remover flange to the drying tower, electrostatic precipitator dust pelletizing system's flue gas discharge port is connected with the wet flue gas desulfurization tower. The utility model discloses a desulfurization waste water zero release method of realizing need not extra energy consumption, also need not extra equipment, does not have solitary waste salt to produce simultaneously, and the increase of a small amount of salt does not have big influence to fly ash comprehensive utilization's quality.
Description
Technical Field
The utility model relates to a waste water desulfurization technical field especially relates to an ultralow emission waste water zero discharge system based on boiler flue gas.
Background
At present, aiming at a salt concentration method of desulfurization wastewater, a salt concentration process treats desulfurization wastewater pretreated by an FGD system through a vapor compression type thin film evaporator to generate pure distilled water for recycling the FGD system as process make-up water. However, the introduction of a vapor compression type thin film evaporator is required, so that the technical problems of high investment, high energy consumption, evaporator scaling and system corrosion are the biggest problems. And huge investment causes huge burden to coal-electricity enterprises with generally poor profits at present. Meanwhile, high energy consumption and high maintenance cost enable the electric power enterprise to avoid or reduce equipment application as much as possible even if a wastewater zero discharge device is built. In addition, the export of waste salt as a hazardous solid waste remains a problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of ultralow emission waste water zero release system based on boiler flue gas has solved the high, energy consumption height of investment, evaporimeter scale deposit and system corrosion and the waste salt of traditional salt concentration technology desulfurization waste water treatment method existence and has regarded as dangerous solid useless, the difficult problem of handling.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an ultralow emission waste water zero discharge system based on boiler flue gas, includes boiler flue, drying tower, injection apparatus, electrostatic precipitator dust pelletizing system, wet flue gas desulfurization tower and effluent disposal system, boiler flue's end connection has dust remover flange, boiler flue is arranged in and is connected to dust remover flange to the drying tower, electrostatic precipitator dust pelletizing system's fume outlet is connected with the wet flue gas desulfurization tower, injection apparatus includes first injector head, second injector head, third injector head and fourth injector head.
Preferably, the waste water treatment system comprises a clean water tank and two waste water pumps, and one of the waste water pumps is a standby waste water pump.
Preferably, the electrostatic precipitator dust pelletizing system includes electrostatic precipitator, compressed air import and desulfurization waste water import.
Preferably, one end of the first spray head, one end of the second spray head, one end of the third spray head and one end of the fourth spray head are connected with the boiler, and the other end of the first spray head, the other end of the second spray head, the other end of the third spray head and the other end of the fourth spray head are connected with the electrostatic dust collector.
Preferably, the openings of the first spray head, the second spray head, the third spray head and the fourth spray head are upward.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a desulfurization waste water zero release method of realizing need not extra energy consumption, also need not extra equipment, does not have solitary waste salt to produce simultaneously, and the increase of a small amount of salt does not have big influence to fly ash comprehensive utilization's quality.
Drawings
FIG. 1 is a schematic view of the connection between a boiler and an injection device of an ultra-low emission wastewater zero discharge system based on boiler flue gas;
FIG. 2 is a schematic view of the view direction A-A of FIG. 1 according to the present invention;
FIG. 3 is a diagram of a wastewater treatment system according to the present invention;
fig. 4 is a diagram of a dust removing system of the electrostatic dust collector of the present invention.
In the figure: boiler 1, 2 dust remover flange, 3 first shower nozzle, 4 second shower nozzle, 5 third shower nozzle, 6 fourth shower nozzle, 7 electrostatic precipitator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a zero discharge system of ultralow emission waste water based on boiler flue gas, includes boiler flue 1, drying tower, injection apparatus, electrostatic precipitator dust pelletizing system, wet flue and effluent disposal system, and the end connection of boiler flue 1 has dust remover flange 2, and the drying tower is arranged in boiler flue and is connected to dust remover flange 2, and electrostatic precipitator dust pelletizing system's flue gas discharge port and wet flue are connected, and injection apparatus includes first injector head 3, second injector head 4, third injector head 5 and fourth injector head 6.
In this embodiment, the wastewater treatment system includes a clean water tank and two wastewater pumps, and one of the wastewater pumps is a standby wastewater pump.
In this embodiment, the electrostatic precipitator dust pelletizing system includes electrostatic precipitator 7, compressed air import and desulfurization waste water import.
In this embodiment, one ends of the first spray head 3, the second spray head 4, the third spray head 5, and the fourth spray head 6 are connected to the boiler 1, and the other ends of the first spray head 3, the second spray head 4, the third spray head 5, and the fourth spray head 6 are connected to the electrostatic precipitator 7.
In the present embodiment, the openings of the first ejection heads 3, the second ejection heads 4, the third ejection heads 5, and the fourth ejection heads 6 are directed upward.
The working process is as follows: after the desulfurization wastewater is primarily treated by the wastewater treatment system, the wastewater is conveyed into an inlet flue of the electrostatic dust collector 7 through a wastewater pump and a jet device; water in the flue is quickly evaporated into steam under the heating action of high-temperature flue gas, and salt in the liquid wastewater is crystallized into tiny solid particles; tiny solid particles generated by crystallization enter the electrostatic precipitator 7 along with the flue gas, and are captured by the electrostatic precipitator 7 and separated from the flue gas; the evaporated moisture enters the wet desulphurization tower along with the flue gas after dust removal, the moisture is condensed to enter a slurry circulating system of the desulphurization tower under the spraying and cooling effects of the desulphurization tower, and the addition of the moisture can reduce the water demand of the desulphurization system for supplementing the moisture to a certain extent.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides an ultralow emission waste water zero discharge system based on boiler flue gas, includes boiler flue (1), drying tower, injection apparatus, electrostatic precipitator dust pelletizing system, wet flue gas desulfurization tower and effluent disposal system, its characterized in that, the end connection of boiler flue (1) has dust remover flange (2), boiler flue is arranged in and is connected to dust remover flange (2) to the drying tower, electrostatic precipitator dust pelletizing system's flue gas discharge port is connected with the wet flue gas desulfurization tower, injection apparatus includes first injector head (3), second injector head (4), third injector head (5) and fourth injector head (6).
2. The system of claim 1, wherein the wastewater treatment system comprises a clean water tank and two wastewater pumps, and one of the wastewater pumps is a backup wastewater pump.
3. The boiler flue gas based ultra-low emission wastewater zero discharge system of claim 1, wherein the electrostatic precipitator dust removal system comprises an electrostatic precipitator (7), a compressed air inlet and a desulfurized wastewater inlet.
4. The system of claim 3, wherein one end of the first spray head (3), the second spray head (4), the third spray head (5) and the fourth spray head (6) is connected with the boiler flue (1), and the other end of the first spray head (3), the second spray head (4), the third spray head (5) and the fourth spray head (6) is connected with the electrostatic precipitator (7).
5. The system for the zero discharge of the ultra-low emission waste water based on the boiler flue gas as claimed in claim 1, wherein the first spray head (3), the second spray head (4), the third spray head (5) and the fourth spray head (6) are opened upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067412.4U CN212924465U (en) | 2020-06-11 | 2020-06-11 | Ultralow-emission wastewater zero discharge system based on boiler flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021067412.4U CN212924465U (en) | 2020-06-11 | 2020-06-11 | Ultralow-emission wastewater zero discharge system based on boiler flue gas |
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| CN212924465U true CN212924465U (en) | 2021-04-09 |
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| CN202021067412.4U Active CN212924465U (en) | 2020-06-11 | 2020-06-11 | Ultralow-emission wastewater zero discharge system based on boiler flue gas |
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