CN217249732U - Cooperative non-dosing washing water recycling system for wet electrostatic precipitator - Google Patents
Cooperative non-dosing washing water recycling system for wet electrostatic precipitator Download PDFInfo
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- CN217249732U CN217249732U CN202220831778.7U CN202220831778U CN217249732U CN 217249732 U CN217249732 U CN 217249732U CN 202220831778 U CN202220831778 U CN 202220831778U CN 217249732 U CN217249732 U CN 217249732U
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Abstract
The utility model discloses a cooperative non-dosing washing water recycling system of a wet electrostatic dust collector, which comprises a wet electrostatic dust collector washing waste water collecting pipe, a waste water collecting box, a clarifier body, a recovery water tank body, a sewage pump inlet valve, a sewage pump, a desulfurization absorption tower and a wet dehumidification washing water replenishing tank; a clarifier stirrer is arranged in the clarifier body, the wet-type electric precipitation washing wastewater collecting pipe is communicated with an inlet of a wastewater collecting tank, an outlet of the wastewater collecting tank is communicated with an inlet at the top of the clarifier body, an outlet at the top of the clarifier body is communicated with an inlet of a recovery water tank body, and an outlet at the bottom of the clarifier body is communicated with a desulfurization absorption tower through a sewage pump inlet valve and a sewage pump; the bottom outlet of the recovery water tank body is divided into two paths, wherein one path is communicated with a pipeline between the inlet valve of the sewage pump and the sewage pump, and the other path is communicated with the moisture-removing flushing water replenishing water tank.
Description
Technical Field
The utility model discloses energy-concerving and environment-protective field relates to a wet electrostatic precipitator sparge water recycle system of medicine is not added to collaborative formula.
Background
Along with the continuous increase of the installed capacity of thermal power in recent years and the great pressure on the atmospheric environment caused by the increase of the total amount of discharged pollutants, the understanding of people on the environment and body health harmed by pollutants such as fine dust, acid mist and heavy metal is further improved, and particularly, the PM2.5 which is fine particulate matters extremely harmful to the human health is bound to be a more strict atmospheric pollutant discharge control index in China. The existing wet desulphurization system hardly has the capability of removing PM2.5 particulate matters, and in order to improve the overall dust removal efficiency, the conventional method is to improve the dust removal effect before wet desulphurization, such as an electric-bag composite dust removal technology, a low-temperature dust removal technology, a cloth bag dust removal technology and the like. The technologies can reduce the inlet concentration of smoke dust before wet desulphurization, but can not solve the problems of liquid drop entrainment, gypsum rain and the like caused by wet desulphurization, so that the phenomena of acid rain, gypsum rain and the like frequently occur at the downstream of the wind direction of the chimney. Moreover, the removal of mercury and sulfur dioxide aerosols, etc. is very limited.
The wet electric dust collector has been widely accepted in meeting the requirements of ultra-low emission and PM2.5 treatment. Relevant documents and practices at home and abroad show that the wet-type electric dust collector has an ideal removal effect on pollutants such as acid mist, aerosol, liquid drops, heavy metals, dioxin and the like in fine, viscous or high-specific-resistance dust and flue gas, and is efficient equipment for deeply treating atmospheric pollutants.
The wet electrostatic precipitator works on the principle that dust particles are adsorbed to a dust collecting electrode under the action of an electric field, and then the dust is washed away by water, so that a washing water system matched with the wet electrostatic precipitator is needed. The rinse water system is one of the most important components of a wet electrostatic precipitator system. However, in the operation process, due to fluctuation of factors such as coal quality and the like, the increase of the dust content in the flue gas also needs to increase the washing water amount, raw water is continuously supplemented, and waste water is discharged, the waste water discharge amount and the dust content in the flue gas are almost in a linear relation, and finally the washing waste water enters a desulfurization system, so that the difficulty of water balance of a wet desulfurization system is increased, and the desulfurization waste water amount is greatly increased. The method is contradictory to the current requirements of thermal power plants in China on water conservation and emission reduction, the realization of quality-based recycling and classification treatment of waste water in the plants and the realization of zero emission of waste water in the whole plants. Therefore, a technology is urgently needed to be found, which can reduce the amount of wastewater under the condition that the emission of the atmospheric pollutants reaches the standard, and realize the important aims of 'recycling and classifying treatment' of wastewater in the plant according to the quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a wet electrostatic precipitator sparge water recycle system that does not add medicine of tandem, this system can realize the branch matter recovery and the classification of waste water in the factory.
In order to achieve the purpose, the cooperative non-dosing washing water recycling system for the wet electrostatic precipitator comprises a wet electrostatic precipitator washing wastewater collecting pipe, a wastewater collecting box, a clarifier body, a recovery water tank body, a sewage pump inlet valve, a sewage pump, a desulfurization absorption tower and a wet dehumidification washing water replenishing tank;
a clarifier stirrer is arranged in the clarifier body, the wet-type electric precipitation washing wastewater collecting pipe is communicated with an inlet of a wastewater collecting tank, an outlet of the wastewater collecting tank is communicated with an inlet at the top of the clarifier body, an outlet at the top of the clarifier body is communicated with an inlet of a recovery water tank body, and an outlet at the bottom of the clarifier body is communicated with a desulfurization absorption tower through a sewage pump inlet valve and a sewage pump;
the bottom outlet of the recovery water tank body is divided into two paths, wherein one path is communicated with a pipeline between the inlet valve of the sewage pump and the sewage pump, and the other path is communicated with the moisture-removing flushing water replenishing water tank.
The outlet of the wastewater collecting box is communicated with the top inlet of the clarifier body sequentially through a wastewater conveying pipe, a wastewater pump inlet valve, a wastewater pump outlet pressure gauge, a wastewater pump outlet valve, a clarifier inlet flow meter and a clarifier inlet regulating valve.
The top outlet of the clarifier body is communicated with the inlet of the recovery water tank body through a clarifier effluent turbidity meter, a clarifier effluent regulating valve and a clarifier effluent pipe.
The bottom outlet of the clarifier body is communicated with the desulfurization absorption tower through a clarifier sewage discharge valve, a sewage discharge pump inlet valve, a sewage discharge pump outlet valve, a sewage discharge flowmeter and a sewage discharge pipe.
The outlet at the bottom of the recovery water tank body is divided into two paths after passing through a recovery water tank outlet valve, a recovery water pump, a recovery water main pipe and a recovery water pump outlet pressure gauge.
The bottom outlet of the recovery water tank body is communicated with a pipeline between the inlet valve of the sewage pump and the sewage pump through a flushing water pipe and a flushing valve of the sewage pump.
The bottom outlet of the recovery water tank body is communicated with the wet-removing flushing water replenishing tank through a reuse water branch pipe, a reuse flowmeter and a wet-removing flushing water replenishing tank water inlet regulating valve.
A recycling water tank liquid level meter is arranged on the recycling water tank body.
The device also comprises a water tank, a clarifier bottom discharge, a return pipe of the reuse water tank and a drain valve of the reuse water tank; an overflow port at the top of the recovery water tank body is communicated with the water tank through an overflow pipe of the recovery water tank, and a drain outlet at the bottom of the recovery water tank body is communicated with the water tank through a drain valve of the recovery water tank;
the outlet at the bottom of the clarifier body is communicated with the bottom row of the clarifier.
The side surface of the clarifier body is provided with a clarifier sampling point.
The utility model discloses following beneficial effect has:
the utility model discloses a cooperative wet electrostatic precipitator sparge water recycle system of medicine not when concrete operation, wet-type electric precipitation washes the drainage and gets into waste water collection box, waste water in the waste water collection box gets into the clarifier body, the wet-type electric precipitation that contains suspended particles such as dust washes waste water in the clarifier body, carry out the homogeneity clarification under the effect of agitator, and carry out solid-liquid separation through the swash plate clarification region that clarifier body upper portion set up, the supernatant after removing suspended particles such as dust gets into and receives the water tank body, the sediment of clarifier body bottom finally gets into the desulfurization absorption tower, wherein, the play water of retrieving the water tank body is divided into two routes, wherein one route gets into in the dehumidification sparge water moisturizing box, another route is retrieved to the desulfurization absorption tower after using as the sparge water, because sulfur trioxide that wet electrostatic precipitator collected can become sulphuric acid with water, the pH value of the washing water is acidic, so the washing water is supplemented into a desulfurization absorption tower to neutralize limestone slurry for neutralization reaction without adding sodium hydroxide; it should be noted that, the utility model discloses can guarantee wet electrostatic precipitator's operation effect furthest, wash waste water to a large amount of direct addendum desulfurization systems originally carries out retrieval and utilization aftertreatment, in order to reduce desulfurization system's moisturizing volume, maintain desulfurization system's water balance, do not increase desulfurization waste water yield, realize waste water "branch matter retrieval and utilization in the factory, the important target of classification treatment", moreover, because do not add coagulant, polymer organic matter such as coagulant, therefore the washing water after handling is mended behind the desulfurization absorption tower, the influence to power plant's desulfurization system is very little, can not cause the thick liquid poisoning, phenomenons such as foaming, guarantee desulfurization system's normal operating, have no secondary pollution, characteristics with low costs.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a wet-type electric precipitation washing wastewater collecting pipe, 2 is a wastewater collecting box, 3 is a wastewater conveying pipe, 4 is a wastewater pump inlet valve, 5 is a wastewater pump, 6 is a wastewater pump outlet pressure gauge, 7 is a wastewater pump outlet valve, 8 is a clarifier inlet flowmeter, 9 is a clarifier inlet regulating valve, 10 is a clarifier body, 11 is a clarifier stirrer, 12 is a clarifier sampling point, 13 is a clarifier outlet turbidimeter, 14 is a clarifier outlet regulating valve, 15 is a clarifier outlet pipe, 16 is a recycling water tank body, 17 is a recycling water tank overflow pipe, 18 is a recycling water tank blow-off valve, 19 is a recycling water tank liquid level gauge, 20 is a recycling water tank outlet valve, 21 is a recycling water pump, 22 is a recycling water pump outlet pressure gauge, 23 is a recycling water main pipe, 24 is recycling water branch pipe, 25 is a recycling flowmeter, 26 is a wet-removal washing water tank inlet regulating valve, 27 is a wet-removal washing water-replenishing tank, 28 is a flushing water pipe, 29 is a sewage pump flushing valve, 30 is a clarifier sewage valve, 31 is a sewage pump inlet valve, 32 is a clarifier bottom discharge, 33 is a sewage pump, 34 is a sewage pump outlet valve, 35 is a sewage flowmeter, 36 is a sewage pipe, and 37 is a desulfurization absorption tower.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution 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, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the cooperative wet electrostatic precipitator washing water recycling system without adding chemicals comprises a wet electrostatic precipitator washing water collecting pipe 1, a waste water collecting tank 2, a waste water conveying pipe 3, a waste water pump inlet valve 4, a waste water pump 5, a waste water pump outlet pressure gauge 6, a waste water pump outlet valve 7, a clarifier inlet flow meter 8, a clarifier inlet regulating valve 9, a clarifier body 10, a clarifier stirrer 11, a clarifier sampling point 12, a clarifier outlet turbidimeter 13, a clarifier outlet regulating valve 14, a clarifier outlet pipe 15, a recycle water tank body 16, a recycle water tank overflow pipe 17, a recycle water tank blow-off valve 18, a recycle water tank level meter 19, a recycle water tank outlet valve 20, a recycle water pump 21, a recycle water pump outlet pressure gauge 22, a recycle water main pipe 23, a recycle water branch pipe 24, a recycle flow meter 25, a wet de-make-up water tank inlet regulating valve 26, A wet dehumidification washing water replenishing tank 27, a washing water pipe 28, a sewage pump washing valve 29, a clarifier sewage valve 30, a sewage pump inlet valve 31, a clarifier bottom drain 32, a sewage pump 33, a sewage pump outlet valve 34, a sewage flowmeter 35, a sewage pipe 36 and a desulfurization absorption tower 37;
the wet-type electric precipitation washing wastewater collecting pipe 1 is communicated with an inlet of a wastewater collecting box 2, an outlet of the wastewater collecting box 2 is communicated with an inlet at the top of a clarifier body 10 through a wastewater conveying pipe 3, a wastewater pump inlet valve 4, a wastewater pump 5, a wastewater pump outlet pressure gauge 6, a wastewater pump outlet valve 7, a clarifier water inlet flow meter 8 and a clarifier water inlet regulating valve 9 in sequence, and an outlet at the top of the clarifier body 10 is communicated with an inlet of a recovery water tank body 16 through a clarifier water outlet turbidity meter 13, a clarifier water outlet regulating valve 14 and a clarifier water outlet pipe 15;
the bottom outlet of the clarifier body 10 is communicated with a desulfurization absorption tower 37 through a clarifier sewage discharge valve 30, a sewage discharge pump inlet valve 31, a sewage discharge pump 33, a sewage discharge pump outlet valve 34, a sewage discharge flowmeter 35 and a sewage discharge pipe 36;
the bottom outlet of the recovery water tank body 16 is divided into two paths through a recovery water tank outlet valve 20, a recovery water pump 21, a recovery water main pipe 23 and a recovery water pump outlet pressure gauge 22, wherein one path is communicated with a pipeline between a sewage pump inlet valve 31 and a sewage pump 33 through a flushing water pipe 28 and a sewage pump flushing valve 29, and the other path is communicated with a wet dehumidification flushing water replenishing tank 27 through a recovery water branch pipe 24, a recovery flow meter 25 and a wet dehumidification replenishing water tank inlet regulating valve 26.
A recycling water tank liquid level meter 19 is arranged on the recycling water tank body 16; the overflow port at the top of the recovery water tank body 16 is communicated with the water tank through a return water tank overflow pipe 17, and the drain outlet at the bottom of the recovery water tank body 16 is communicated with the water tank through a return water tank drain valve 18.
An outlet at the bottom of the clarifier body 10 is communicated with a clarifier bottom row 32; the clarifier sampling point 12 is arranged on the side surface of the clarifier body 10.
A clarifier agitator 11 is provided in the clarifier body 10.
The utility model discloses a concrete working process does:
when concrete operation, wet-type electric precipitation washes the drainage and washes waste water collecting pipe 1 entering wastewater collection box 2 through wet-type electric precipitation, waste water in the wastewater collection box 2 gets into clarifier body 10 along waste water conveying pipe 3 under the effect of wastewater pump 5, the wet-type electric precipitation who contains suspended particles such as dust washes waste water in clarifier body 10, carry out the homogeneity clarification under clarifier agitator 11's effect, and the swash plate clarification region through clarifier body 10 upper portion setting carries out solid-liquid separation, the supernatant of having got rid of suspended particles such as dust collects to clarifier outlet pipe 15 through the overflow weir of clarifier body 10. Because the inclined plate clarifier can remove a large amount of turbid impurity particles, suspended colloidal substances and the like, the removal rate reaches 95%, the sedimentation efficiency is high, a coagulant does not need to be added additionally, the effluent water quality is better, the treated supernatant is supplemented into the recovery water tank body 16 through the clarifier water outlet pipe 15, the effluent water quality of the clarifier body 10 is subjected to online detection and flow control through the clarifier effluent turbidity meter 13 and the clarifier effluent regulating valve 14, the outer wall of the clarifier body 10 is provided with a clarifier sampling point 12, the water quality is sampled and analyzed, the water quality condition is detected, the operation parameters are adjusted in time, and the effluent water quality is ensured to be stable;
the lower part of the clarifier body 10 is provided with a mud bucket, and the accumulated mud subjected to solid-liquid separation through sedimentation can automatically fall into the mud bucket, so that mud is convenient to discharge, and the labor intensity of mud cleaning is reduced. The sludge at the bottom passes through a clarifier blowoff valve 30 at the bottom of the clarifier body 10 and is supplemented into a desulfurization absorption tower 37 through a blowoff pipe 36 under the action of a blowoff pump 33 to be used as supplementing water. The sulfur trioxide collected by the wet electrostatic precipitator and water generate sulfuric acid, and the sulfuric acid is acidic in the pH value of the washing, so the sulfuric acid is supplemented into a desulfurization absorption tower 37 to be repeatedly reacted and neutralized with limestone slurry, sodium hydroxide is not needed for neutralization, and particles such as dust and the like are finally removed after being dehydrated by a gypsum dehydrator;
the supernatant in the recovery water tank body 16 is respectively communicated with a recycle branch pipe 24 and a flushing water pipe 28 through a recycle water main pipe 23 by a recycle water pump 21, wherein most of the treated flushing water enters a wet dehumidification flushing water replenishing tank 27 through the recycle branch pipe 24 for recycling. The reuse water branch pipe 24 is provided with a reuse flowmeter 25 and a water inlet regulating valve 26 of the dehumidification and water replenishing tank, and the water replenishing quantity can be regulated and controlled according to actual needs. The other part of supernatant is connected to a pipeline between a sewage pump 33 and a sewage pump inlet valve 31 through a flushing water pipe 28 and a sewage pump flushing valve 29 and is used as a flushing water source of the sewage pump 33; a small amount of flushing wastewater after flushing also enters the desulfurization absorption tower 37 for recycling. The recovery water tank body 16 is provided with a recycling water tank liquid level meter 19, a recycling water pump 21 is linked with the recycling water tank liquid level meter 19, the automatic start and stop are carried out according to the water level condition, and the bottom of the clarifier body 10 is provided with a clarifier bottom row 32, so that the overhaul is convenient.
The utility model discloses can guarantee wet electrostatic precipitator's operational effect furthest, carry out retrieval and utilization aftertreatment to the washing waste water that originally directly mends a large amount of desulfurization systems, reduce desulfurization system's moisturizing, maintain desulfurization system's water balance, do not increase desulfurization waste water yield, realize the important target of waste water "branch matter retrieval and utilization, classification" in the factory.
Claims (10)
1. A cooperative non-dosing wet electrostatic precipitator washing water recycling system is characterized by comprising a wet electric precipitation washing wastewater collecting pipe (1), a wastewater collecting box (2), a clarifier body (10), a recovery water tank body (16), a sewage pump inlet valve (31), a sewage pump (33), a desulfurization absorption tower (37) and a wet dehumidification washing water replenishing tank (27);
a clarifier stirrer (11) is arranged in the clarifier body (10), the wet-type electric dust removal washing wastewater collecting pipe (1) is communicated with an inlet of the wastewater collecting tank (2), an outlet of the wastewater collecting tank (2) is communicated with an inlet at the top of the clarifier body (10), an outlet at the top of the clarifier body (10) is communicated with an inlet of the recovery water tank body (16), and an outlet at the bottom of the clarifier body (10) is communicated with a desulfurization absorption tower (37) through a sewage pump inlet valve (31) and a sewage pump (33);
the bottom outlet of the recovery water tank body (16) is divided into two paths, wherein one path is communicated with a pipeline between a sewage pump inlet valve (31) and a sewage pump (33), and the other path is communicated with a wet dehumidification flushing water replenishing water tank (27).
2. The cooperative non-dosing wet electrostatic precipitator washing water recycling system according to claim 1, wherein an outlet of the waste water collection tank (2) is communicated with a top inlet of the clarifier body (10) through a waste water delivery pipe (3), a waste water pump inlet valve (4), a waste water pump (5), a waste water pump outlet pressure gauge (6), a waste water pump outlet valve (7), a clarifier inlet flow meter (8) and a clarifier inlet regulating valve (9) in sequence.
3. The cooperative non-medicated wet electrostatic precipitator flushing water recycling system according to claim 1, wherein the top outlet of the clarifier body (10) is communicated with the inlet of the recovery tank body (16) through a clarifier effluent turbidity meter (13), a clarifier effluent regulating valve (14) and a clarifier effluent pipe (15).
4. The system for recycling washing water of a cooperative non-dosing wet electrostatic precipitator according to claim 1, wherein the bottom outlet of the clarifier body (10) is communicated with the desulfurization absorption tower (37) through a clarifier sewage discharge valve (30), a sewage discharge pump inlet valve (31), a sewage discharge pump (33), a sewage discharge pump outlet valve (34), a sewage discharge flow meter (35) and a sewage discharge pipe (36).
5. The system for recycling washing water of the cooperative non-dosing wet electrostatic precipitator according to claim 1, wherein the bottom outlet of the recycling water tank body (16) is divided into two paths through a recycling water tank outlet valve (20), a recycling water pump (21), a recycling water main pipe (23) and a recycling water pump outlet pressure gauge (22).
6. The cooperative non-medicated wet electrostatic precipitator washing water recycling system according to claim 1, wherein the bottom outlet of the recovery tank body (16) is communicated with the pipe between the sewage pump inlet valve (31) and the sewage pump (33) through the washing water pipe (28) and the sewage pump washing valve (29).
7. The system for recycling the rinsing water of the collaborative non-medicated wet electrostatic precipitator according to claim 1, wherein the bottom outlet of the recycling water tank body (16) is communicated with the wet dehumidification rinsing water replenishing tank (27) through the recycling water branch pipe (24), the recycling flow meter (25) and the wet dehumidification replenishing tank water inlet regulating valve (26).
8. The cooperative non-medicated wet electrostatic precipitator washing water recycling system according to claim 1, wherein a reuse tank level gauge (19) is provided on the recovery tank body (16).
9. The cooperative non-medicated wet electrostatic precipitator flushing water recycling system of claim 1, further comprising a water tank, a clarifier bottom (32), a reuse tank overflow pipe (17) and a reuse tank blowdown valve (18); an overflow port at the top of the recovery water tank body (16) is communicated with the water tank through a return water tank overflow pipe (17), and a sewage outlet at the bottom of the recovery water tank body (16) is communicated with the water tank through a return water tank sewage valve (18);
the outlet at the bottom of the clarifier body (10) is communicated with the clarifier bottom row (32).
10. The system for recycling rinsing water of a collaborative non-medicated wet electrostatic precipitator according to claim 1, wherein a clarifier sampling point (12) is provided at the side of the clarifier body (10).
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| CN202220831778.7U CN217249732U (en) | 2022-04-11 | 2022-04-11 | Cooperative non-dosing washing water recycling system for wet electrostatic precipitator |
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| CN202220831778.7U CN217249732U (en) | 2022-04-11 | 2022-04-11 | Cooperative non-dosing washing water recycling system for wet electrostatic precipitator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875612A (en) * | 2022-11-30 | 2023-03-31 | 华能兰州西固热电有限公司 | Automatic blowdown of high temperature sampling frame of infrared thermal imaging opens and stops system |
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2022
- 2022-04-11 CN CN202220831778.7U patent/CN217249732U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875612A (en) * | 2022-11-30 | 2023-03-31 | 华能兰州西固热电有限公司 | Automatic blowdown of high temperature sampling frame of infrared thermal imaging opens and stops system |
| CN115875612B (en) * | 2022-11-30 | 2023-09-19 | 华能兰州西固热电有限公司 | Automatic blowdown start-stop system of high-temperature sampling frame for infrared thermal imaging |
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