CN112441642A - Be applied to terminal curing equipment of waste water zero release - Google Patents
Be applied to terminal curing equipment of waste water zero release Download PDFInfo
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- CN112441642A CN112441642A CN202011164579.7A CN202011164579A CN112441642A CN 112441642 A CN112441642 A CN 112441642A CN 202011164579 A CN202011164579 A CN 202011164579A CN 112441642 A CN112441642 A CN 112441642A
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- outer cylinder
- waste water
- wastewater
- roller dryer
- inner cylinder
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
Abstract
The invention relates to a tail end solidification device applied to zero discharge of waste water, wherein an outlet of a waste water buffer tank is connected with a water inlet of a roller dryer through waste water, the roller dryer comprises an outer cylinder and a hood positioned above the outer cylinder, the water inlet of the roller dryer is arranged on the left side of the outer cylinder, a discharge hole of the roller dryer is arranged on the right side of the outer cylinder, a condensate water recovery port is arranged behind the discharge hole of the roller dryer, a driving mechanism is arranged on the rear side of the water inlet and connected with a driving machine, the outer cylinder and the inner cylinder are arranged in the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, a heat conduction layer is arranged on the outer circumferential wall of the inner cylinder, a heat insulation layer is arranged on the inner wall of the outer cylinder, a medium cavity for storing a heat conduction medium is arranged between the outer cylinder and the inner cylinder, stirring structures are uniformly distributed on, and a compression roller mechanism is arranged above the roller.
Description
Technical Field
The invention relates to the technical field of terminal curing equipment, in particular to terminal curing equipment applied to zero discharge of wastewater.
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 prior art comprises the following steps: evaporative crystallization, main flue evaporative drying, bypass evaporative drying and the like.
The traditional multiple-effect evaporative crystallization or mechanical compression evaporative crystallization or flue evaporative drying has the defects of large equipment, large occupied area and complex operation.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides the tail end solidification equipment applied to zero discharge of wastewater, optimizes the tail end solidification system after the concentration treatment of the wastewater treatment system, organizes and integrates the prior art, and well solves the defects of large equipment, large occupied area, complex operation and the like of the prior tail end solidification system.
A terminal solidification device applied to zero discharge of wastewater comprises a wastewater buffer tank, a wastewater delivery pump and a roller dryer; the outlet of the waste water buffer tank is connected with the inlet of a waste water delivery pump, the outlet of the waste water delivery pump is connected with the water inlet of a roller dryer, the roller dryer comprises an outer cylinder and a hood positioned above the outer cylinder, the water inlet of the roller dryer is arranged on the left side of the outer cylinder, the right side of the outer cylinder is provided with a discharge port of the roller dryer, a condensate water recovery port is arranged behind the discharge port of the roller dryer, the rear side of the water inlet is provided with a driving mechanism, the driving mechanism is connected with a driving machine, the outer cylinder and the inner cylinder are arranged inside the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, the peripheral wall of the inner cylinder is provided with a heat conduction layer, the inner wall of the outer cylinder is provided with a heat insulation layer, a medium cavity for storing a heat conduction medium is arranged between the outer cylinder and the inner cylinder, the, and a heat source outlet is arranged at the same position on the side of the outer cylinder.
Further, the heat source introduced by the heat source inlet comprises high-temperature steam, high-temperature flue gas and heat conduction oil, wherein the high-temperature steam is saturated steam or superheated steam with the pressure of 120-500kPa and the temperature of 105-150 ℃, the high-temperature flue gas is high-temperature flue gas before a denitration outlet and an air preheater inlet, the temperature of 320-370 ℃, the heat conduction oil is a benzene ring compound, and the temperature of 240-340 ℃.
Furthermore, the wastewater in the wastewater buffer tank is a clear wastewater liquid after concentration and decrement treatment or a slurry without clarification treatment, the pH value is 6-9, and the concentration of suspended matters is 0-20%.
Further, collecting the tail end wastewater after concentration and decrement treatment in a wastewater buffer tank, and uniformly mixing the wastewater in the wastewater buffer tank; waste water is conveyed into a roller dryer through a waste water conveying pump from an outlet of a waste water buffer tank, a layer of uniform liquid film is formed on the inner surface of an inner cylinder by the waste water, the waste water is conducted and heated by a heat source guided by a heat source guide inlet to obtain dry crystalline salt, dry crystalline salt particles formed on the inner cylinder are scraped by a scraping mechanism arranged on the inner cylinder, dry slag is collected through a discharge port of the roller dryer, secondary steam generated while the dry crystalline salt is obtained is recycled into a condenser through a condensate water recycling port.
Furthermore, the thickness of the liquid film is 0.3-1.5mm, and the time required by the process of forming dry crystalline salt after the material film evaporates water from liquid state is 10-300 s.
Further, the temperature of the secondary steam is 50-120 ℃, and the pressure of the secondary steam is 12kPa-200 kPa.
Further, a filter screen is arranged at the condensed water recovery port.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention optimizes the tail end curing system after the concentration treatment of the waste water treatment system, organizes and integrates the prior art, and well solves the defects of huge equipment, large floor area, complex operation and the like of the prior tail end curing system;
2. the invention uses the roller dryer to dry the tail end wastewater after the concentration and decrement treatment, optimizes the original process compared with the original evaporative crystallization or flue gas drying process, greatly reduces the volume of the equipment, greatly reduces the occupied land, has simple operation and the like;
3. the method has the advantages of simple process flow, low total investment and operation cost, and certain operation flexibility, and can cope with the change of different qualities and quantities of raw wastewater and ensure the stable operation of the system.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1, a terminal solidification equipment for zero discharge of wastewater comprises a wastewater buffer tank, a wastewater delivery pump and a drum dryer; the outlet of the waste water buffer tank is connected with the inlet of a waste water delivery pump, the outlet of the waste water delivery pump is connected with the water inlet of a roller dryer, the roller dryer comprises an outer cylinder and a hood positioned above the outer cylinder, the water inlet of the roller dryer is arranged on the left side of the outer cylinder, the right side of the outer cylinder is provided with a discharge port of the roller dryer, a condensate water recovery port is arranged behind the discharge port of the roller dryer, the rear side of the water inlet is provided with a driving mechanism, the driving mechanism is connected with a driving machine, the inner cylinder is arranged inside the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, the peripheral wall of the inner cylinder is provided with a heat conduction layer, the inner wall of the outer cylinder is provided with a heat insulation layer, a medium cavity for storing a heat conduction medium is arranged between the outer cylinder and the inner cylinder, the side wall, and a heat source outlet is arranged at the same position on the side of the outer cylinder.
Further, collecting the tail end wastewater after concentration and decrement treatment in a wastewater buffer tank, and uniformly mixing the wastewater in the wastewater buffer tank; waste water is conveyed into a roller dryer through a waste water conveying pump from an outlet of a waste water buffer tank, a layer of uniform liquid film is formed on the inner surface of an inner cylinder by the waste water, the waste water is conducted and heated by a heat source guided by a heat source guide inlet to obtain dry crystalline salt, dry crystalline salt particles formed on the inner cylinder are scraped by a scraping mechanism arranged on the inner cylinder, dry slag is collected through a discharge port of the roller dryer, secondary steam generated while the dry crystalline salt is obtained is recycled into a condenser through a condensate water recycling port.
Further, 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 in proper order by first baffle and second baffle, 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 the one-level baffle-box into 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. 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. All be provided with agitating unit in the bottom of one-level baffle-box, second grade baffle-box and last stage baffle-box. 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.
Further, transmission includes the pivot, the pivot runs through on the horizontal central point of inner tube and urceolus puts, be provided with the axle sleeve in the pivot, the pivot is connected with the axle sleeve rotation, the pivot does not set up the axle sleeve in inner tube lateral wall position, pivot and inner tube fixed connection, and the inner tube rotates along with the rotation of pivot, and the urceolus does not rotate along with the rotation of pivot, and rotary motion between inner tube and the urceolus can not the mutual interference, transmission still includes driving motor, driving motor is connected with the pivot, provides rotary power for the pivot.
Further, scrape material mechanism including scraping board frame, wear-resisting scraper, scrape the board frame and set up in the first half of inner tube, scrape board frame and set up the for the axle sleeve mount fixed connection on the inner tube, axle sleeve and mount fixed connection. The wear-resistant scraper is fixedly connected with the scraper frame and is connected with the inner cylinder and used for scraping the dry crystal salt particles which rotate to the upper part along with the cylinder wall. The cutting edge of the wear-resistant scraper is tightly attached to the inner side face and does not rotate along with the rotation of the inner barrel, the inner side face is fixed above the inner barrel, dry crystalline salt particles adhered to the inner barrel wall can be scraped, the scraping effect is increased, the wear resistance of the scraper can be increased through the wear-resistant scraper, the wear speed is reduced, the wear-resistant scraper can be replaced, the use effect is improved, and the service life of the scraping mechanism is prolonged.
Preferably, the ratio between the inner diameter of the outer cylinder and the outer diameter of the inner cylinder is 1.25 to 1.5, and the ratio between the inner diameter of the outer cylinder and the outer diameter of the inner cylinder of the present invention is 1.3. By adopting the inner cylinder and the outer cylinder with the structure, the volume of a heat source placing area between the outer cylinder and the inner cylinder can be reduced, the usage amount of the heat source is less, and the energy can be effectively saved.
Further, the heat source introduced by the heat source inlet comprises high-temperature steam, high-temperature flue gas and heat conduction oil, wherein the high-temperature steam is saturated steam or superheated steam with the pressure of 120-500kPa and the temperature of 105-150 ℃, the high-temperature flue gas is high-temperature flue gas before a denitration outlet and an air preheater inlet, the temperature of 320-370 ℃, the heat conduction oil is a benzene ring compound, and the temperature of 240-340 ℃.
Furthermore, the wastewater in the wastewater buffer tank is a clear wastewater liquid after concentration and decrement treatment or a slurry without clarification treatment, the pH value is 6-9, and the concentration of suspended matters is 0-20%.
Furthermore, the thickness of the liquid film is 0.3-1.5mm, and the time required by the process of forming dry crystalline salt after the material film evaporates water from liquid state is 10-300 s.
Further, the temperature of the secondary steam is 50-120 ℃, and the pressure of the secondary steam is 12kPa-200 kPa.
Further, a filter screen is arranged at the condensed water recovery port.
Example 2:
the utility model provides a be applied to terminal solidification equipment of waste water zero release, the waste water baffle-box can also set up to the box of the structure of cuboid, the box is separated for one-level baffle-box, second grade baffle-box and final stage baffle-box in proper order by first baffle and second baffle, 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 the one-level baffle-box into, flows through second grade baffle-box to the final stage baffle-box in with the angle of slope, 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 in, carries. And circulation holes are uniformly distributed on the first clapboard and the second clapboard, and the circulation holes of the first clapboard are larger than the circulation holes of the second clapboard. All be provided with agitating unit on the top of one-level baffle-box, second grade baffle-box and last stage baffle-box. The stirring device comprises a stirring shaft and stirring blades arranged on the stirring shaft, the stirring blades are arranged in a fan shape, and the stirring device is connected with a stirring motor and provides stirring power through the stirring motor. 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 crystallized salt is obtained by drying the waste water at the tail end by a roller dryer, and can be sold as industrial salt and also can be conveyed into ash to be comprehensively utilized along with the ash. The industrial salt is the industrial salt meeting the requirements of GB/T5462-2015 industrial salt, and is mainly characterized in that the purity is more than or equal to 98.5 percent. And (3) secondary steam generated when the tail end wastewater is dried by the roller dryer to obtain crystallized salt is condensed by the condenser to obtain condensed water, and fresh water obtained by recovering the condensed water is reused for other water replenishing of the power plant. The tail end curing system after the concentration treatment of the wastewater treatment system is optimized, the prior art is organized and integrated, and the defects of large equipment, large occupied area, complex operation and the like of the conventional tail end curing system are well overcome.
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 to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a be applied to terminal solidification equipment of waste water zero release which characterized in that: comprises a wastewater buffer tank, a wastewater delivery pump and a roller dryer; the outlet of the waste water buffer tank is connected with the inlet of a waste water delivery pump, the outlet of the waste water delivery pump is connected with the water inlet of a roller dryer, the roller dryer comprises an outer cylinder and a hood positioned above the outer cylinder, the water inlet of the roller dryer is arranged on the left side of the outer cylinder, the right side of the outer cylinder is provided with a discharge port of the roller dryer, a condensate water recovery port is arranged behind the discharge port of the roller dryer, the rear side of the water inlet is provided with a driving mechanism, the driving mechanism is connected with a driving machine, the outer cylinder and the inner cylinder are arranged inside the outer cylinder, the outer cylinder and the inner cylinder are coaxially arranged, the peripheral wall of the inner cylinder is provided with a heat conduction layer, the inner wall of the outer cylinder is provided with a heat insulation layer, a medium cavity for storing a heat conduction medium is arranged between the outer cylinder and the inner cylinder, the, and a heat source outlet is arranged at the same position on the side of the outer cylinder.
2. The terminal solidification equipment applied to zero discharge of wastewater according to claim 1, wherein: the heat source introduced by the heat source inlet comprises high-temperature steam, high-temperature flue gas and heat conducting oil, wherein the high-temperature steam is saturated steam or superheated steam with the pressure of 120-filament-500 kPa and the temperature of 105-filament-150 ℃, the high-temperature flue gas is high-temperature flue gas at the denitration outlet and in front of the air preheater inlet, the temperature of 320-filament-370 ℃, the heat conducting oil is a benzene ring compound, and the temperature of 240-filament-340 ℃.
3. The terminal solidification equipment applied to zero discharge of wastewater according to claim 1, wherein: the wastewater in the wastewater buffer tank is clear wastewater liquid after concentration and decrement treatment or slurry without clarification treatment, the pH value is 6-9, and the concentration of suspended matters is 0-20%.
4. The terminal solidification equipment applied to zero discharge of wastewater according to claim 1, wherein: collecting the tail end wastewater after concentration and decrement treatment in a wastewater buffer tank, and uniformly mixing the wastewater in the wastewater buffer tank; waste water is conveyed into a roller dryer through a waste water conveying pump from an outlet of a waste water buffer tank, a layer of uniform liquid film is formed on the inner surface of an inner cylinder by the waste water, the waste water is conducted and heated by a heat source guided by a heat source guide inlet to obtain dry crystalline salt, dry crystalline salt particles formed on the inner cylinder are scraped by a scraping mechanism arranged on the inner cylinder, dry slag is collected through a discharge port of the roller dryer, secondary steam generated while the dry crystalline salt is obtained is recycled into a condenser through a condensate water recycling port.
5. The terminal solidification equipment applied to zero discharge of wastewater according to claim 4, wherein: the thickness of the liquid film is 0.3-1.5mm, and the time required by the process of forming dry crystalline salt after the material film evaporates water from liquid state is 10-300 s.
6. The terminal solidification equipment applied to zero discharge of wastewater according to claim 4, wherein: the secondary steam has a temperature of 50-120 deg.C and a pressure of 12-200 kPa.
7. The terminal solidification equipment applied to zero discharge of wastewater according to claim 4, wherein: the condensed water recovery port is provided with a filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164579.7A CN112441642A (en) | 2020-10-27 | 2020-10-27 | Be applied to terminal curing equipment of waste water zero release |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011164579.7A CN112441642A (en) | 2020-10-27 | 2020-10-27 | Be applied to terminal curing equipment of waste water zero release |
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| CN112441642A true CN112441642A (en) | 2021-03-05 |
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| CN202011164579.7A Pending CN112441642A (en) | 2020-10-27 | 2020-10-27 | Be applied to terminal curing equipment of waste water zero release |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI817593B (en) * | 2021-07-07 | 2023-10-01 | 陽程科技股份有限公司 | Seawater conversion mechanism |
-
2020
- 2020-10-27 CN CN202011164579.7A patent/CN112441642A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI817593B (en) * | 2021-07-07 | 2023-10-01 | 陽程科技股份有限公司 | Seawater conversion mechanism |
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