CN214141670U - Terminal curing system applied to zero discharge of wastewater - Google Patents
Terminal curing system applied to zero discharge of wastewater Download PDFInfo
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- CN214141670U CN214141670U CN202022418088.2U CN202022418088U CN214141670U CN 214141670 U CN214141670 U CN 214141670U CN 202022418088 U CN202022418088 U CN 202022418088U CN 214141670 U CN214141670 U CN 214141670U
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Abstract
The utility model relates to a be applied to terminal solidification system of waste water zero release, waste water baffle-box 1 is connected through waste water delivery pump 2 with waste water atomizing device 3, waste water is carried to waste water atomizing device with compressed air auxiliary atomization through waste water delivery pump pressurization from waste water baffle-box, waste water after the atomizing directly spouts in dry evaporation tower 4, utilize the waste heat of flue gas to evaporate waste water after the atomizing, dry evaporation tower top is provided with the flue gas import, the flue gas import links to each other with the high temperature flue before the air preheater, the exhanst gas outlet is located dry evaporation tower bottom and links to each other with low temperature flue behind the air preheater, the inside below of the import of high temperature flue gas is equipped with waste water import, the side of waste water import is connected with waste water atomizing device, the export of air compressor is connected to the atomizing device top. The utility model discloses terminal curing system after the concentrated processing of effluent disposal system optimizes, organizes the integration with prior art, fine solution current terminal curing system equipment huge, area is big, operate shortcoming such as complicated.
Description
Technical Field
The utility model relates to an end solidification technology field especially relates to an end solidification system for waste water zero release.
Background
The tail end wastewater is completely recycled after being concentrated and reduced and then being solidified, no waste liquid is discharged from factories, and the purpose of zero discharge of the wastewater is really realized. The main technology comprises the following steps: evaporative crystallization, main flue evaporative drying, bypass evaporative drying and the like.
The evaporative crystallization treatment technology is mainly characterized in that waste water is heated, evaporated and concentrated to saturation by using steam or electric energy, and soluble salt is crystallized and separated out. The evaporative crystallization is technically feasible for carrying out terminal solidification treatment, but the treatment and disposal problems of the evaporative crystallization are solved because the crystallized salt is mixed salt, and the application of the evaporative crystallization is greatly limited due to factors such as higher system investment cost, higher operation energy consumption, large occupied area, complex system and the like.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem that exists among the prior art, the utility model provides a be applied to terminal curing system of waste water zero release optimizes waste water zero release system, changes original mechanical rotation atomizing mode into the supplementary atomizing of compressed air, fine solution former mechanical rotation atomizing equipment expensive, the big scheduling problem of dry evaporation tower area.
A terminal solidification system applied to zero discharge of waste water comprises a waste water buffer tank 1, a waste water conveying pump 2, a waste water atomization device 3, a drying evaporation tower 4, an air compressor 5 and a pneumatic ash conveying device 6, wherein the waste water buffer tank 1 is connected with the waste water atomization device 3 through the waste water conveying pump 2, waste water is pressurized and conveyed from the waste water buffer tank through the waste water conveying pump to the waste water atomization device for auxiliary atomization by compressed air, the atomized waste water is directly sprayed into the drying evaporation tower 4, the atomized waste water is evaporated by using waste heat of the flue gas, the top of the drying evaporation tower is provided with a flue gas inlet, the flue gas inlet is connected with a high-temperature flue in front of an air preheater, the flue gas outlet is positioned at the bottom of the drying evaporation tower and is connected with a low-temperature flue behind the air preheater, the bottom of the drying evaporation tower is provided with the pneumatic ash conveying device 6, and the waste water inlet is arranged below the inlet of the high-temperature flue gas, the side of waste water import is connected with waste water atomizing device 3, and 5 exports of air compressor are connected to the atomizing device top, the exhanst gas outlet is connected with the import of dust remover through low temperature flue, and the export of dust remover is connected with the desulfurizing tower. The vapor and a large amount of crystal salt after the evaporation get into the dust remover along with the flue gas, and the crystal salt is caught together along with the ash and is got rid of in the dust remover, and the vapor condenses out in the desulfurizing tower and mends into desulfurization system, and the deposit of a minute amount of crystal salt falls into drying evaporation tower bottom, uses the defeated grey device of strength to get rid of.
Further, waste water atomizing device includes atomizing spray gun, flue gas distributor, atomizing spray gun is located inside the drying evaporation tower, atomizing spray gun sets up in the flue gas distributor below, atomizing spray gun top entry linkage air compressor export, its side entry linkage waste water delivery pump export, atomizing spray gun's single throughput is 0.25-2.5 t/h.
Furthermore, at least 1 atomizing device is arranged on the circumference of the same height.
Furthermore, the drying evaporation tower is arranged beside the high-temperature flue and is of a tower-type container structure, the top of the drying evaporation tower is connected with a flue gas distributor, the top of the drying evaporation tower is a 90-150-degree conical end socket, the bottom of the drying evaporation tower is a 50-120-degree conical end socket, the flowing direction of flue gas in the drying evaporation tower is from top to bottom, and the flow speed range of the flue gas is 0.3-3.0 m/s.
Furthermore, the wastewater buffer tank is a vertical storage tank, and a stirrer is arranged in the vertical storage tank.
Further, the wastewater is tail end wastewater, clarified tail end wastewater or unclarified slurry, the pH value of the wastewater is 6-9, and the concentration of suspended matters of the wastewater is 0-20%.
Further, an air source inlet below the side of the pneumatic ash conveying device is connected with an outlet of the air compressor; the power source of the pneumatic ash conveying device is compressed air, and the compressed air is a medium with the outlet pressure of the air compressor of 0.5-1.2 MPa.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model atomizes the tail end waste water after concentration and decrement treatment by using compressed air, then leads partial smoke gas to a single spray drying tower, and then uses a waste water atomizing device to spray the smoke gas into a drying evaporation tower, and uses the heat of the smoke gas to evaporate the atomized waste water;
2. the utility model discloses in dry evaporation tower, draw and connect the anterior part high temperature flue gas of air preheater as the heat source, evaporate the waste water after atomizing in solitary evaporation drying tower. The crystal salt generated after the waste water is evaporated enters a dust remover along with the flue gas, the crystal salt is collected and removed by the dust remover, and the water vapor is condensed in a desulfurizing tower and is supplemented into a desulfurizing system;
3. the utility model discloses area is little, and the system is simple relatively, and equipment is few, and investment, running cost are all lower, and no crystal salt handles the problem of handling, and utilizes flue gas waste heat to handle, and is limited to the unit boiler influence, has reached "treat useless with useless" purpose, and economic benefits is showing.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
as shown in figure 1, a terminal solidification system applied to zero discharge of waste water comprises a waste water buffer tank 1, a waste water delivery pump 2, a waste water atomization device 3, a drying evaporation tower 4, an air compressor 5 and a pneumatic ash conveying device 6, wherein the waste water buffer tank 1 is connected with the waste water atomization device 3 through the waste water delivery pump 2, waste water is pressurized and conveyed to the waste water atomization device from the waste water buffer tank through the waste water delivery pump and is atomized with the assistance of compressed air, the atomized waste water is directly sprayed into the drying evaporation tower 4 and is evaporated by using waste heat of flue gas, a flue gas inlet is arranged at the top of the drying evaporation tower and is connected with a high-temperature flue 10 in front of an air preheater 7, a flue gas outlet is arranged on the side wall at the bottom of the drying evaporation tower and is connected with a low-temperature flue behind the air preheater, the ash conveying device 6 is arranged at the bottom of the drying evaporation tower, and a waste water inlet is arranged below the inside of the high-temperature flue gas inlet, the side of waste water import is connected with waste water atomizing device 3, and 5 exports of air compressor are connected to the atomizing device top, the exhanst gas outlet is connected with the import of dust remover through low temperature flue, and the export of dust remover is connected with the desulfurizing tower. The vapor and a large amount of crystal salt after the evaporation get into dust remover 8 along with the flue gas, and crystal salt is caught together along with the ash and is got rid of in the dust remover, and the vapor condenses out in the desulfurizing tower and mends into desulfurization system, and the deposit of a minute amount of crystal salt falls into the bottom of the drying evaporation tower, and the defeated ash device of strength is connected with the ash storehouse, and the deposit that will fall into the bottom of the drying evaporation tower is passed into the ash storehouse through the defeated ash device of strength and is got rid of in shifting into ash storehouse 9.
Furthermore, waste water atomizing device includes atomizing spray gun, flue gas distributor, atomizing spray gun is located inside the drying evaporation tower, atomizing spray gun sets up in the flue gas distributor below, atomizing spray gun top entry linkage air compressor export, its side entry linkage waste water delivery pump export, the air compressor is opened earlier in the operation of atomizing spray gun, then opens the waste water delivery pump, stops to move with waste water delivery pump switch to washing water, washs atomizing spray gun, closes compressed air at last to the inside scale deposit phenomenon that appears of atomizing spray gun. The rifle body of atomizing spray gun is equipped with the carborundum protective layer, atomizing spray gun single handling capacity is 0.25-2.5t/h, atomizing spray gun's export droplet's particle diameter is 5um-50 um.
Furthermore, the number of the atomizing spray guns is at least 1, and can be set to be 1-12. The material of the atomizing spray gun at least comprises one or more of stainless steel, hastelloy and titanium alloy.
Furthermore, the drying evaporation tower is arranged beside the high-temperature flue and is of a tower-type container structure, and the top of the drying evaporation tower is connected with a flue gas distributor or the flue gas distributor is arranged on the side wall of the upper end of the drying evaporation tower; the smoke distributor comprises a flue and a smoke guide plate arranged in the flue; and the outlet of the flue is communicated with the inner cavity of the drying evaporation tower. The angle that the flow direction of flue gas guide plate and flue gas formed is adjustable setting, and the flue gas guide plate sets up to swing joint with the flue inner wall, and the velocity of flow that the flue gas was used for alleviating in the setting of flue gas guide plate and promote the flue gas homogeneous mixing in the flue, the spraying direction of atomizing spray gun is perpendicular with the air current direction of flue gas or unanimous with the air current direction of flue gas.
Furthermore, the top of the drying and evaporating tower is a conical end socket with the angle of 90-150 degrees, the bottom of the drying and evaporating tower is a conical end socket with the angle of 50-120 degrees, the flowing direction of flue gas in the drying and evaporating tower is from top to bottom, and the flow speed range is 0.3-3.0 m/s. The structure is environment-friendly and economical, and is suitable for environment-friendly treatment of tail-end wastewater.
Further, the waste water baffle-box is vertical box structure, the waste water baffle-box sets up the box into the structure of cuboid, the box is separated for one-level baffle-box, second grade baffle-box and final stage baffle-box by first baffle and second baffle in proper order, the bottom of the case of one-level baffle-box, second grade baffle-box and final stage baffle-box is decurrent arc slope setting, and waste water pours into in the one-level baffle-box to the angle of slope flows through in second grade baffle-box to the final stage baffle-box, and this kind of setting makes the velocity of flow increase of the waste water that flows into next stage, makes waste water flow into next stage baffle-box with the mode of pitch arc, carries out waste water neutralization with the big velocity of flow, and is more reasonable in the neutralization. First baffle and second baffle are the filter screen structure, the filter screen mesh aperture of first baffle is greater than the filter screen mesh aperture of second baffle, and second grade baffle-box and last-stage baffle-box are poured into to waste water filter screen mesh one deck layer, can carry out the neutralization of flow in-process with the waste water after the neutralization on different layers, but not all waste water are mixed together and can not fully flow. The aperture of the mesh of the filter screen of the first clapboard is larger than that of the mesh of the filter screen of the second clapboard, the lower layer of the waste water in the buffer tanks at all levels is turbid, and the waste water flows out from the gradually reduced filter screens layer by layer at one level.
Further, be provided with the spout that supplies first baffle and second baffle to place on the box inner wall, the spout is "U" type structure, and the inside shape size of spout is unanimous with the baffle for place first baffle and second baffle, make the simple to operate of first baffle and second baffle, the spout top is provided with bolt fastening structure for the position of fixed first baffle and second baffle, when needs change the baffle, unpack apart the bolt and can change the baffle. And the first-stage buffer tank, the second-stage buffer tank and the final-stage buffer tank are all provided with stirring devices. Agitating unit include the (mixing) shaft and with set up in the epaxial stirring vane of stirring, stirring vane sets up to 3, stirring vane is equidistance range on the (mixing) shaft, stirring vane structure is unanimous, stirring vane is the arc setting, and up extends the setting along the horizontal plane on the position of blade tail end third, be provided with circular through-hole on the below position of stirring vane's side, the last wear-resisting granule that is provided with of stirring vane, wear-resisting granule has reduced stirring vane's wearing and tearing, has prolonged stirring vane's life. Be provided with the waste water import on the one-level baffle-box lateral wall, be provided with the export on the lateral wall of last stage baffle-box, all be provided with the mud discharging port on the lower extreme central point of one-level baffle-box, second grade baffle-box and last stage baffle-box puts. The stirring device is connected with the stirring motor, and stirring power is provided by the stirring motor.
Furthermore, the wastewater is tail end wastewater, is clarified tail end wastewater or unclarified slurry, has the pH value of 6-9, and has the suspended matter concentration of 0-20%.
Further, the pneumatic ash conveying device comprises an ash conveying pipe, the lower side of the ash conveying pipe is connected with an outlet of an air compressor through a compressed air pipe, the compressed air pipe is fixedly arranged on the outer side of the ash conveying pipe, a plurality of nozzles are evenly arranged on the compressed air pipe, mounting holes matched with the nozzles are formed in the ash conveying pipe, and the nozzles penetrate through the mounting holes and extend into the ash conveying pipe. When the pneumatic ash conveying structure is used, compressed air is introduced into the compressed air pipe and is sprayed into the ash conveying pipe through the nozzle, so that dust accumulated in the ash conveying pipe is blown away. The power source of the pneumatic ash conveying device is compressed air, and the compressed air is a medium with the outlet pressure of the air compressor of 0.5-1.2 MPa.
The utility model discloses area is little, and the system is simple relatively, and equipment is few, and investment, running cost are all lower, and no crystal salt handles the problem of handling, and utilizes flue gas waste heat to handle, and is limited to the unit boiler influence, has reached "treat useless with useless" purpose, and economic benefits is showing.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. The utility model provides a be applied to terminal curing system of waste water zero release which characterized in that: comprises a waste water buffer tank (1), a waste water conveying pump (2), a waste water atomizing device (3), a drying evaporation tower (4), an air compressor (5) and a pneumatic ash conveying device (6), wherein the waste water buffer tank (1) is connected with the waste water atomizing device (3) through the waste water conveying pump (2), waste water is pressurized and conveyed from the waste water buffer tank through the waste water conveying pump to the waste water atomizing device for auxiliary atomization by compressed air, the atomized waste water is directly sprayed into the drying evaporation tower (4), the atomized waste water is evaporated by using waste heat of flue gas, the top of the drying evaporation tower is provided with a flue gas inlet, the flue gas inlet is connected with a high-temperature flue in front of an air preheater, the flue gas outlet is positioned at the bottom of the drying evaporation tower and connected with a low-temperature flue behind the air preheater, the bottom of the drying evaporation tower is provided with the pneumatic ash conveying device (6), the waste water inlet is arranged below the inlet of the high-temperature flue, the side of waste water import is connected with waste water atomizing device (3), and air compressor (5) export is connected to the atomizing device top, the exhanst gas outlet is connected with the import of dust remover through low temperature flue, and the export of dust remover is connected with the desulfurizing tower.
2. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: waste water atomizing device includes atomizing spray gun, flue gas distributor, atomizing spray gun is located inside the dry evaporation tower, atomizing spray gun sets up in the flue gas distributor below, atomizing spray gun top entry linkage air compressor export, its side entry linkage waste water delivery pump export, atomizing spray gun's single handling capacity is 0.25-2.5 t/h.
3. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: at least 1 atomizing device is arranged on the circumference of the same height.
4. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: the drying evaporation tower is arranged beside the high-temperature flue and is of a tower type container structure, the top of the drying evaporation tower is connected with a flue gas distributor, the top of the drying evaporation tower is a 90-150-degree conical end socket, the bottom of the drying evaporation tower is a 50-120-degree conical end socket, the flowing direction of flue gas in the drying evaporation tower is from top to bottom, and the flow speed range of the flue gas is 0.3-3.0 m/s.
5. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: the waste water buffer tank is a vertical storage tank, and a stirrer is arranged in the vertical storage tank.
6. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: the wastewater is tail end wastewater, is clarified tail end wastewater or unclarified slurry, and has a pH value of 6-9 and a suspended matter concentration of 0-20%.
7. The terminal solidification system for zero discharge of wastewater according to claim 1, wherein: an air source inlet below the side of the pneumatic ash conveying device is connected with an outlet of the air compressor; the power source of the pneumatic ash conveying device is compressed air, and the compressed air is a medium with the outlet pressure of the air compressor of 0.5-1.2 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022418088.2U CN214141670U (en) | 2020-10-27 | 2020-10-27 | Terminal curing system applied to zero discharge of wastewater |
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| CN202022418088.2U CN214141670U (en) | 2020-10-27 | 2020-10-27 | Terminal curing system applied to zero discharge of wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117886386A (en) * | 2024-03-14 | 2024-04-16 | 南京依涛环保科技有限公司 | Single-fluid spray evaporation system for drying desulfurization wastewater concentrated solution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117886386A (en) * | 2024-03-14 | 2024-04-16 | 南京依涛环保科技有限公司 | Single-fluid spray evaporation system for drying desulfurization wastewater concentrated solution |
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