CN112007423B - Slope crystallization and solid-liquid separation system - Google Patents
Slope crystallization and solid-liquid separation system Download PDFInfo
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- CN112007423B CN112007423B CN202010808059.9A CN202010808059A CN112007423B CN 112007423 B CN112007423 B CN 112007423B CN 202010808059 A CN202010808059 A CN 202010808059A CN 112007423 B CN112007423 B CN 112007423B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/08—Preparation by working up natural or industrial salt mixtures or siliceous minerals
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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Abstract
The invention relates to the field of environmental protection, energy conservation and salt chemical industry, in particular to a slope crystallization and solid-liquid separation system. The utility model provides a slope crystallization and solid-liquid separation system, includes brine buffer tank, slope crystallization system and solid-liquid separation system, slope crystallization system below be provided with brine buffer tank, brine buffer tank is in with the setting the brine distribution system at slope crystallization system top is connected. The brine in the brine buffer tank is lifted and distributed to the top of the slope, so that falling film is formed in the process that the brine flows up and down the slope and is quickly evaporated or frozen for crystallization, and high-purity salt and nitrate crystals are obtained by precipitation in a slope bottom solid-liquid separation system and can be automatically transmitted to an external device. The invention can provide a larger interface for exchanging energy and substances between the brine and the air through the slope crystallization system, so that the brine can quickly reach the temperature of the environment or the surface of the slope, and the evaporation effect is greatly improved compared with that in the traditional crystallization tank or a frozen nitre tank.
Description
Technical Field
The invention relates to the fields of environmental protection, energy conservation and salt chemical industry, in particular to a slope crystallization and solid-liquid separation system.
Background
The traditional saltpeter industry mostly adopts a saltpeter pond or a salt pond for freezing separation or evaporation and crystallization, and is characterized in that brine in the pond has a certain depth, so that energy obtained (or emitted) through the environment is diluted and averaged by a large amount of brine, the temperature change of the whole brine is small, the saltpeter separated by freezing or the salt separated by evaporation at the average temperature is too thin to be collected in the same year, and the efficiency of freezing the saltpeter in winter or drying the salt in the sun in summer is limited. Because the open-air brine ponds can be harvested after years of accumulation, the open-air brine ponds are also polluted by rainwater dilution and sand wind, so that the efficiency of freezing saltpeter or drying salt in the sun is further reduced, and a certain amount of sand dust and the like are mixed in the products. In addition, because the product crystals are uniformly distributed at the bottom of the wide tank, a large-scale mechanical pushing shovel is required to be used for concentration during harvesting, and the product pollution risk and the harvesting cost are further increased.
In the traditional method for freezing the saltpeter, heat exchange between brine and cold air only occurs on a gas-liquid contact surface in winter, total energy exchange is limited, the heat capacity of the brine in the whole pool is large, and the freezing and crystallizing process of the sodium sulfate is a heating process, so that the temperature reduction of the brine in the whole pool caused in winter is limited, the total amount of the sodium sulfate frozen and separated out every year is limited, the economic exploitation amount can be reached only by the accumulation of the frozen saltpeter for many years, and the frozen saltpeter interlayer formed every year contains a large amount of sandy soil precipitated in other seasons, so that the cost is increased for the exploitation and utilization of the frozen saltpeter. In addition, because the temperature of the whole nitre solution can not be reduced to the minimum, the content of sodium sulfate in the nitre solution is still quite high, which is not beneficial to the subsequent utilization of the mother solution, such as the operation of solar salt drying. The operation of evaporating, crystallizing and separating the brine of saltpeter by using temperature change is a mature scheme of the current industry. Through search, pengxue et al, light international engineering limited company, china, discloses in the invention patent with application number CN 201811472718.5: the invention discloses a process for producing saltpeter by evaporating saltpeter system brine, and provides a device for carrying out evaporation separation operation on saltpeter brine by taking the saltpeter system brine as a raw material and utilizing different evaporation devices and a process method using the device. However, the invention needs more process steps and corresponding devices, the operation flow needs to consume steam, the larger industrial production energy correspondingly needs larger device structure and larger energy consumption, and the unit economic value of the produced main and auxiliary products is not too high, which restricts the possibility of large-scale quantitative production in industrial practical application and improves the economic risk of practical industrial production. Therefore, the mature industrial market puts forward the actual demands for large-scale processing of mass production raw materials, reduction of various related costs, reduction of energy consumption in the process flow by using natural force and more automatic and intelligent completion of industrial quantitative production in the field of salt and nitrate production.
Disclosure of Invention
Aiming at the problems of large starting energy consumption and low economic benefit of the device, the invention provides a slope crystallization and solid-liquid separation system, which comprises a brine buffer tank, a slope crystallization system and a solid-liquid separation system for separating mother liquor and crystals output by the slope crystallization system, wherein the brine buffer tank is positioned below the slope crystallization system and is connected with a brine distribution system arranged at the top of the slope crystallization system through a pipeline, and the solid-liquid separation system is positioned at the bottom of the slope crystallization system.
In the technical scheme, the brine buffer tank is arranged under the inclined plate component of the inclined slope crystallization system, can avoid the dilution of brine by rainwater in rainy days, the saturated brine in the brine buffer tank is uniformly spread on the top of the slope through the communicating pipeline, and flows down along the surface of the slope to form a falling film, brine is subjected to energy exchange with air in the falling process, supersaturation and continuous crystallization are realized, crystals and mother liquor are collected and converged in a solid-liquid separation system at the bottom of the slope, the crystals are automatically conveyed to an external output device after the solid-liquid separation system performs solid-liquid separation operation, and the mother liquor is led into the brine buffer tank for cyclic crystallization again, the slope crystallization and solid-liquid separation system realizes efficient and automatic brine crystallization operation through simple structural design, makes full use of natural force to improve brine crystallization rate, and realizes large-scale industrial demands of low cost, high efficiency and environmental protection.
Preferably, the brine distribution system includes brine lift pump, brine pipeline and is located the water distributor at slope crystallization system top, the water distributor pass through brine pipeline with the brine buffer tank is connected, be provided with directional orifice or slit on the water distributor. In this technical scheme, brine buffer tank carries brine to the water distributor at slope crystallization device top through brine pipeline, and through the even distribution of water distributor, brine can flow down along the slope surface, forms the falling film, and through the setting of water distributor, the speed that makes brine flow down at the slope top is freely controllable, has improved the maneuverability of operation.
Preferably, slope crystallization system includes the support and installs a plurality of swash plate assembly on the support, the swash plate assembly adopts ventilation structure design, the swash plate assembly includes the swash plate of a plurality of ladder settings and connects the bottom plate of a plurality of swash plates. In this technical scheme, the swash plate subassembly of different gradients is formed on multichannel horizontal beam and the swash plate messenger slope crystallization device surface that erects, and brine can trickle down in proper order in the swash plate subassembly of co-altitude not, and the clearance between the swash plate subassembly makes the air freely circulate around the swash plate, has further strengthened brine and the energy exchange of air when the swash plate subassembly trickles down, has improved the efficiency of evaporation and crystallization. Each inclined plate is longitudinally provided with a plurality of horizontal steps so that the brine flows down to generate turbulent flow, and the energy exchange between the brine and the air is further enhanced.
Preferably, the solid-liquid separation system comprises a collecting tank arranged at the bottom of the inclined plate of the slope crystallization system and a solid-liquid separation tank arranged at the bottom of the collecting tank. In the technical scheme, the collecting tank arranged at the bottom of the slope crystallization system can automatically collect and gather the liquid and crystals falling from the whole slope and automatically guide the liquid and crystals into the solid-liquid collecting tank, so that the automation of related operation is realized.
Preferably, the collecting tank comprises a solid-liquid collecting tank, a rainwater collecting tank, an inclined fine net and a testing device for detecting the conductivity of the mother liquor, a flow guide plate turnover device for guiding the mother liquor into the solid-liquid collecting tank or the rainwater collecting tank is arranged between the solid-liquid collecting tank and the rainwater collecting tank, and the flow guide plate turnover device is electrically connected with the testing device; in this technical scheme, be provided with rainwater collecting vat and solid-liquid collecting vat in the collecting vat, the solid-liquid collecting vat is provided with the solid-liquid collecting vat export, and the rainwater collecting vat is provided with rainwater pipeline, can derive crystallization bittern and rainwater respectively, solves the dilution pollution problem of rainwater to the mother liquor.
Preferably, the diversion flap device comprises a flap motor arranged on the collecting tank, a flap mechanism arranged on an output shaft of the flap motor, and a diversion flap fixedly connected with the flap mechanism, and the diversion flap is arranged below the inclined fine net and between the solid-liquid collecting tank and the rainwater collecting tank; the turning plate motor is electrically connected with the testing device. In this technical scheme, carry out the analysis to the brine that gets into the solid-liquid collecting vat through liquid collection shallow tray and conductivity sensor wherein, then the panel turnover mechanism among the control water conservancy diversion panel turnover carries out corresponding action, the leading-in rainwater collecting vat of the rainwater that crosses brine concentration low, derive outside channel through rainwater pipeline, the solid-liquid mixture that will brine concentration be normal is leading-in to the solid-liquid collecting vat, and in leading-in solid-liquid separation groove through the solid-liquid collecting vat export, put the fine screen to one side simultaneously and can guarantee all collect in the leading-in solid-liquid collecting vat of solid crystallization under the different conditions. Through the guide function of the plate turnover mechanism, the slope crystallization and solid-liquid separation system can automatically perform corresponding adjustment on different weather or other conditions, so that the automatic operation of the whole mechanism is realized, manpower is liberated, and a foundation is laid for the practical application of industrialization.
Preferably, the testing device comprises a liquid collection tray arranged between the inclined fine mesh and the diversion turning plate, a conductivity sensor arranged in the liquid collection tray, and a controller electrically connected with the conductivity sensor, wherein the controller is electrically connected with the turning plate motor. In the technical scheme, the conductivity sensor in the liquid collecting tray detects the conductivity of the liquid which passes through the inclined fine screen to filter out solid crystals, and the flap motor is controlled by the controller according to the detection result, so that the timely detection and corresponding operation of weather conditions and system working conditions are realized.
Preferably, the solid-liquid separation tank is provided with an overflow weir, the overflow weir divides the solid-liquid separation tank into a solid settling tank and a mother liquor buffer tank, and the mother liquor buffer tank is provided with a first liquid level sensor, a mother liquor pump and a mother liquor pumping pipeline. In the technical scheme, the solid settling tank automatically guides the mother liquor into the mother liquor buffer tank through the arrangement of the overflow weir structure, so that the automatic separation of the mother liquor and crystals is completed; on the other hand, the mother liquor pump is controlled to be started and stopped through the first liquid level sensor, the mother liquor in the mother liquor buffer tank is automatically transferred away through the mother liquor pumping pipeline, the maximum development rate of brine and the utilization treatment of the mother liquor are guaranteed through circulating crystallization, and the automatic operation of the process flow is realized.
Preferably, a solid lifting device is arranged in the solid settling tank, one end of the solid lifting device is positioned at the bottom of the solid settling tank, and the other end of the solid lifting device is connected with an external solid conveying device. In this technical scheme, thereby solid promotes conveyor and passes through its inside helical structure of drive arrangement drive and rotates and carry solid material from one end to the other end, promotes the crystal of bottom in the conveyor with solid sedimentation tank through solid and carries to the loading outside the solid sedimentation tank or transport the yard through other transport machinery, has realized the high efficiency automation mechanized operation of process flow.
Preferably, the top of the slope crystallization system is provided with an air temperature sensor, a humidity sensor and a light intensity sensor for detecting the climate conditions; and a second liquid level sensor is arranged in the brine buffer tank. In the technical scheme, the brine buffer tank is arranged, so that the adjustment and control can be performed among different brine evaporation tanks, saturated brine is extracted as much as possible, and the crystallization efficiency in the subsequent slope falling film crystallization operation is ensured; the temperature sensor, the humidity sensor and the illuminance sensor at the top of the slope crystallization system can monitor weather conditions, so that a brine pumping distribution system is regulated and controlled, the pumping speed of a brine pump is properly regulated and controlled, the crystallization effect of brine crystallization operation is improved, and different weather conditions are met;
compared with the prior art, the invention has the following advantages:
1. through the energy exchange and crystallization inclined plate component, brine can form a uniform falling film on the surface of the brine, and the large and small steps longitudinally distributed along the inclined plane provide a larger interface for the most effective energy and material exchange between the brine and air, so that the brine quickly reaches the temperature of the environment or the surface of a slope, and the crystallization effect is greatly improved compared with that in a crystallization tank;
2. on the energy exchange and crystallization inclined plate component, the gas and liquid energy exchange forms directional airflow along the inclined surface, and further enhances the gas and liquid energy exchange and evaporation;
3. because of the rapid and effective gas-liquid energy exchange on the energy exchange and crystallization inclined plate component, the original saturated or nearly saturated components in the brine are supersaturated in the falling film flow process, crystals are rapidly separated out and grow on a slope, and the crystals roll down the slope along with the mother liquor;
4. the crystals and the mother liquor are converged at the slope bottom through the collecting tank and enter the solid-liquid separation tank, and are immediately and intensively separated, so that the production and the collection are realized, the salt fishing operation or the nitre pool excavation operation in a crystallization tank in the traditional salt drying process is omitted, the mechanical and labor cost is saved, the sand pollution is reduced, in addition, the timely collection is realized before the adhesion of small crystals, the procedures of crushing and the like are omitted, and the energy consumption and the cost are further reduced;
5. the crystals obtained by the slope crystallization and solid-liquid separation system are quickly crystallized on the slope through clarification of a brine buffer tank, so that the product has high purity and high value;
6. the crystal obtained by the slope crystallization and solid-liquid separation system is fine and uniform in granularity, and is beneficial to later-stage utilization or reprocessing;
8. the slope crystallization and solid-liquid separation system creates conditions for the modernization and the intellectualization of the ancient traditional industry of salt nitrate production, can utilize the energy exchange and the crystallization inclined plate component to accurately freeze or crystallize according to weather conditions, can more fully utilize the temperature difference between seasons and day and night to prolong the total time of natural energy utilization, and can reduce the pollution of wind and sand to products and the dilution of rain and snow to brine through the optimized management of product fluid.
Drawings
FIG. 1 is a schematic diagram of a slope crystallization and solid-liquid separation system according to the present invention;
FIG. 2 is a schematic structural diagram of a ramp assembly in the ramp crystallization and solid-liquid separation system according to the present invention;
FIG. 3 is a schematic diagram of a collecting tank in the slope crystallization and solid-liquid separation system according to the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is a schematic structural diagram of a solid-liquid separation tank in the slope crystallization and solid-liquid separation system according to the present invention.
In the drawings: the device comprises a water distribution pipe, 2-inclined plates, 21-supports, 22-bottom plates, 23-first bayonet structures, 24-second bayonet structures, 25-upper flanging structures, 3-collecting tanks, 31-solid-liquid collecting tanks, 32-rainwater collecting tanks, 33-diversion turning plates, 34-turning plate motors, 35-turning plate mechanisms, 36-rainwater pipelines, 37-inclined fine nets, 38-testing devices, 39-solid-liquid collecting tank outlets, 4-solid-liquid separating tanks, 41-solid settling tanks, 42-overflow weirs, 43-mother liquid buffer tanks, 44-mother liquid pumping pipelines, 45-first liquid level sensors, 5-solid lifting devices, 6-flat temperature sensors and 7-humidity sensors.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the specific embodiments and the accompanying drawings:
example 1
As shown in fig. 1 to 5, a slope crystallization and solid-liquid separation system comprises a brine buffer tank, a slope crystallization system and a solid-liquid separation system for separating mother liquor and crystals output by the slope crystallization system, wherein the brine buffer tank is located below the slope crystallization system and is connected with a brine distribution system arranged at the top of the slope crystallization system through a pipeline, and the solid-liquid separation system is located at the bottom of the slope crystallization system.
Wherein, the slope subassembly of slope crystallization system is located to the brine buffer pool covers down, rainwater dilution brine in the time of can avoiding raining, saturated brine in the brine buffer pool is evenly spread at the slope top through the intercommunication pipeline to form the falling film along the trickle of slope surface, brine takes place the energy exchange with the air at the decline in-process, the salt crystallization is appeared to the supersaturation and constantly, crystal and mother liquor are collected in the solid-liquid separation system of slope bottom and are assembled, solid-liquid separation system carries out automatic transport to outside output device with the crystal after the solid-liquid separation operation. This slope crystallization and solid-liquid separation system has strengthened the energy exchange efficiency of brine and environment through simple structural design greatly, make full use of the natural force in order to improve the speed of brine crystallization, has realized the industrial appeal of scale low-cost high-efficient environmental protection salt nitre.
In addition, brine distribution system includes the brine elevator pump, brine pipeline and be located the water distributor 1 at slope crystallization system top, water distributor 1 is connected with the brine buffer tank through brine pipeline, be provided with directional orifice or slit on water distributor 1, brine buffer tank carries brine to the water distributor 1 at slope crystallization device top through brine pipeline, uniform dispersion through water distributor 1, brine can flow down along the slope surface, form the falling film, setting through water distributor 1, the speed that makes brine flow down at the slope top is freely controllable, the maneuverability of operation has been improved.
The slope crystallization system comprises a support 21 and a plurality of inclined plate assemblies arranged on the support 21, each inclined plate assembly comprises a plurality of inclined plates 2 arranged in a ladder manner and a bottom plate 22 connected with the inclined plates 2, a first bayonet structure 23 is arranged at one end, far away from the solid-liquid separation system, of the bottom plate 22, and the first bayonet structure 23 is clamped with a cross beam of the support 21; a second bayonet structure 24 is arranged at one end of the bottom plate 22 close to the solid-liquid separation system; an upper flanging structure 25 matched with the second bayonet structure 24 is arranged on the inclined plate 2 far away from the solid-liquid separation system in the inclined plate assembly, the inclined plate assembly with different gradients is formed on the surface of the slope crystallization device by the aid of the plurality of horizontal cross beams and the erected inclined plate 2, brine can flow down in the inclined plate assemblies with different heights in sequence, air can freely circulate in the gaps among the inclined plate assemblies around the inclined plate 2, the contact area between the brine and the air when the inclined plate assemblies flow down is further increased while total wind pressure received by the inclined plane is dispersed, and evaporation and crystallization efficiency is improved.
In addition, the solid-liquid separation system comprises a collecting tank 3 arranged at the bottom of the inclined plate 2 of the slope crystallization system and a solid-liquid separation tank 4 arranged at the bottom of the collecting tank 3, the collecting tank 3 arranged at the bottom of the slope crystallization system can automatically collect and gather liquid and crystals falling from the whole slope, and automatically guide the liquid and crystals into the solid-liquid collecting tank 4, so that the automation of related operation is realized.
The collecting tank 3 comprises a solid-liquid collecting tank 31, a rainwater collecting tank 32, an inclined fine net 37 and a testing device 38 for detecting the conductivity of the mother liquor, a flow guide plate turnover device for guiding the mother liquor into the solid-liquid collecting tank 31 or the rainwater collecting tank 32 is arranged between the solid-liquid collecting tank 31 and the rainwater collecting tank 32, and the flow guide plate turnover device is electrically connected with the testing device 38; solid-liquid collecting tank 31 is provided with solid-liquid collecting tank export 39, and rainwater collecting tank 32 is provided with rainwater pipeline 36 that is linked together with outside drainage system, is provided with rainwater collecting tank 32 and solid-liquid collecting tank 31 in the collecting tank 3, and solid-liquid collecting tank 31 is provided with solid-liquid collecting tank export 39, and rainwater collecting tank 32 is provided with rainwater pipeline 36, can derive crystallization bittern and rainwater respectively, solves the dilution problem of rainwater to bittern.
In addition, the diversion flap device comprises a flap motor 34 arranged on the collecting tank 3, a flap mechanism 35 arranged on an output shaft of the flap motor 34, and a diversion flap 33 fixedly connected with the flap mechanism 35, wherein the diversion flap 33 is arranged below the inclined fine net 37 and between the solid-liquid collecting tank 31 and the rainwater collecting tank 32; the plate turning motor is electrically connected with the testing device 38, brine entering the solid-liquid collecting tank 31 is analyzed through the liquid collecting tray and a conductivity testing sensor in the liquid collecting tray, then the plate turning mechanism 35 in the flow guide plate turning device is controlled to perform corresponding actions, the rainwater with the brine concentration being too low is led into the rainwater collecting tank 32, an external channel is led out through the rainwater pipeline 36, a solid-liquid mixture with the brine concentration being normal is led into the solid-liquid collecting tank 31, the solid-liquid separating tank 4 is led into the solid-liquid separating tank 4 through the solid-liquid collecting tank outlet 39, and meanwhile, the inclined fine net 37 can guarantee that solid crystals are collected in the solid-liquid collecting tank 4 under different conditions. Through the guide function of the plate turning mechanism 35, the slope crystallization and solid-liquid separation system can automatically perform corresponding adjustment on different weather or other conditions, so that the automatic operation of the whole mechanism is realized, manpower is liberated, and a foundation is laid for the practical application of industrialization.
The testing device 38 comprises a liquid collecting tray arranged between the inclined fine mesh 37 and the diversion turning plate 35, a conductivity sensor arranged in the liquid collecting tray and a controller electrically connected with the conductivity sensor, the controller is electrically connected with the turning plate motor 34, the conductivity sensor in the liquid collecting tray is used for conducting conductivity detection on liquid which penetrates through the inclined fine mesh 37 and is filtered out solid crystals, and the turning plate motor 34 is controlled through the controller according to a detection result, so that timely detection and corresponding operation of weather conditions and system working conditions are realized.
In addition, an overflow weir 42 is arranged in the solid-liquid separation tank 4, the solid-liquid separation tank 4 is divided into a solid settling tank 41 and a mother liquid buffer tank 43 by the overflow weir 42, a first liquid level sensor 45, a mother liquid pump and a mother liquid pumping pipeline 44 connected with the brine buffer tank are arranged in the mother liquid buffer tank 43, the mother liquid is automatically guided into the mother liquid buffer tank 43 by the solid settling tank 41 through the arrangement of the structure of the overflow weir 42, and the automatic separation of the mother liquid and the crystals is completed; on the other hand, the mother liquor pump is controlled to be started and stopped by the first liquid level sensor 45, and mother liquor in the mother liquor buffer tank 43 is automatically transferred away through the mother liquor pumping pipeline 44, so that the automatic operation of the process flow is realized.
Wherein, be provided with solid hoisting device 5 in the solid sedimentation tank 41, the one end of solid hoisting device 5 is located the bottom of solid sedimentation tank 41, the other end of solid hoisting device 5 is connected with outside solid conveyor, thereby solid hoisting conveyor 5 drives its inside helical structure through drive arrangement and rotates and carry solid material from one end to the other end, thereby promote the crystal of bottom in the solid sedimentation tank 41 through solid hoisting conveyor 5 and carry to solid sedimentation tank 41 external loading car or transport the product storage yard through other transport machinery, the high efficiency automation operation of process flow has been realized.
In addition, the top of the slope crystallization system is provided with an air temperature sensor, a humidity sensor and a light intensity sensor which are used for detecting the climate conditions; the brine buffer tank is internally provided with a second liquid level sensor, and the brine buffer tank can be regulated and controlled among brine tanks of different sources, so that the normal operation of the slope falling film crystallization operation is ensured; the temperature sensor, the humidity sensor and the illuminance sensor at the top of the slope crystallization system can monitor weather conditions, so that a brine pumping distribution system is regulated and controlled, the pumping speed of a brine pump is properly regulated and controlled, the crystallization effect of brine crystallization operation is improved, and different weather conditions are met; .
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A slope crystallization and solid-liquid separation system is characterized in that: the device comprises a brine buffer tank, a slope crystallization system and a solid-liquid separation system for separating mother liquor and crystals output by the slope crystallization system, wherein the brine buffer tank is positioned below the slope crystallization system and is connected with a brine distribution system at the top of the slope crystallization system through a pipeline, and the solid-liquid separation system is positioned at the bottom of the slope crystallization system; the solid-liquid separation system comprises a collecting tank (3) arranged at the bottom of the inclined plate (2) of the slope crystallization system and a solid-liquid separation tank (4) arranged at the bottom of the collecting tank (3); the collecting tank (3) comprises a solid-liquid collecting tank (31), a rainwater collecting tank (32), an inclined fine net (37) and a testing device (38) for detecting the conductivity of mother liquor, a flow guide plate turnover device for guiding the mother liquor into the solid-liquid collecting tank (31) or the rainwater collecting tank (32) is arranged between the solid-liquid collecting tank (31) and the rainwater collecting tank (32), and the flow guide plate turnover device is electrically connected with the testing device; the solid-liquid collecting tank (31) is provided with a solid-liquid collecting tank outlet (39), and the rainwater collecting tank (32) is provided with a rainwater pipeline (36) communicated with an external drainage system.
2. The slope crystallization and solid-liquid separation system according to claim 1, wherein: the brine distribution system comprises a brine lift pump, a brine conveying pipeline and a water distribution pipe (1) arranged at the top of the slope crystallization system, wherein the water distribution pipe (1) is connected with the brine buffer tank through the brine conveying pipeline, and directional spray holes or slits are formed in the water distribution pipe.
3. The slope crystallization and solid-liquid separation system according to claim 1, wherein: slope crystallization system includes support (21) and installs a plurality of swash plate subassembly on support (21), the swash plate subassembly adopts the ventilation structural design, swash plate (2) and bottom plate (22) of connecting a plurality of swash plate (2) that include a plurality of blocks of ladder setting.
4. The slope crystallization and solid-liquid separation system according to claim 1, wherein: the diversion flap device comprises a flap motor (34) arranged on the collecting tank (3), a flap mechanism (35) arranged on an output shaft of the flap motor (34) and a diversion flap (33) fixedly connected with the flap mechanism (35), and the diversion flap (33) is arranged below the inclined fine net (37) and between the solid-liquid collecting tank (31) and the rainwater collecting tank (32); the flap motor is electrically connected with a testing device (38).
5. The system according to claim 4, wherein: the testing device (38) comprises a liquid collecting tray arranged between the inclined fine mesh (37) and the diversion flap (33), a conductivity sensor arranged in the liquid collecting tray and a controller electrically connected with the conductivity sensor, wherein the controller is electrically connected with the flap motor (34).
6. The slope crystallization and solid-liquid separation system according to claim 1, wherein: the device is characterized in that an overflow weir (42) is arranged in the solid-liquid separation tank (4), the solid-liquid separation tank (4) is divided into a solid settling tank (41) and a mother liquor buffer tank (43) by the overflow weir (42), and a first liquid level sensor (45), a mother liquor pump and a mother liquor pumping pipeline (44) are arranged in the mother liquor buffer tank (43).
7. The slope crystallization and solid-liquid separation system according to claim 6, wherein: and a solid lifting device (5) is arranged in the solid settling pond (41), one end of the solid lifting device (5) is positioned at the bottom of the solid settling pond (41), and the other end of the solid lifting device (5) is connected with an external solid conveying device.
8. The slope crystallization and solid-liquid separation system according to claim 1, wherein: the top of the slope crystallization system is provided with an air temperature sensor, a humidity sensor and a light intensity sensor which are used for detecting the climate conditions; and a second liquid level sensor is arranged in the brine buffer tank.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808059.9A CN112007423B (en) | 2020-08-12 | 2020-08-12 | Slope crystallization and solid-liquid separation system |
| PCT/CN2021/111378 WO2022033408A1 (en) | 2020-08-12 | 2021-08-09 | Slope crystallization and solid-liquid separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808059.9A CN112007423B (en) | 2020-08-12 | 2020-08-12 | Slope crystallization and solid-liquid separation system |
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| CN112007423B (en) * | 2020-08-12 | 2022-05-27 | 暨南大学 | Slope crystallization and solid-liquid separation system |
| CN114733225B (en) * | 2022-03-09 | 2023-11-03 | 福建省南仹生物科技有限公司 | Crystallization tank for hyodeoxycholic acid extraction |
| CN117125761B (en) * | 2023-09-06 | 2024-03-12 | 河北金科环保设备有限公司 | Evaporation tower for desulfurization wastewater |
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| CN2099121U (en) * | 1991-02-01 | 1992-03-18 | 陈肇谟 | Equipment for production of sea salt |
| FR2838115A1 (en) * | 2002-04-08 | 2003-10-10 | Lycee La Baugerie | Apparatus for producing natural salt from brine comprises a concrete tank, a hydraulic circuit, a solar panel, a feed pump and a battery |
| HRP20100353C1 (en) * | 2010-06-24 | 2021-04-16 | Ivan Šimić | Sea-water salt-plant with overflowing pans |
| CN103949082B (en) * | 2014-04-25 | 2016-08-31 | 涂海军 | A kind of double cold cooling flowing crystallization apparatus |
| CN205127449U (en) * | 2015-11-14 | 2016-04-06 | 河北博锐达数控科技有限公司 | Evaporative concentration crystallizer |
| CN206063956U (en) * | 2016-08-17 | 2017-04-05 | 临沂润达水务有限公司 | A kind of sedimentation tank grit water separator |
| CN107441748A (en) * | 2017-09-22 | 2017-12-08 | 安丘瑞源机械制造有限公司 | A kind of bittern nature falling film evaporation device and the brine concentration method using its realization |
| CN112007423B (en) * | 2020-08-12 | 2022-05-27 | 暨南大学 | Slope crystallization and solid-liquid separation system |
| CN111943231A (en) * | 2020-08-12 | 2020-11-17 | 暨南大学 | Energy-saving salt solarizing system and salt solarizing method applying same |
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