CN212662725U - Device for evaporating by utilizing humidity difference of gas - Google Patents
Device for evaporating by utilizing humidity difference of gas Download PDFInfo
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- CN212662725U CN212662725U CN202022231193.5U CN202022231193U CN212662725U CN 212662725 U CN212662725 U CN 212662725U CN 202022231193 U CN202022231193 U CN 202022231193U CN 212662725 U CN212662725 U CN 212662725U
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Abstract
The utility model provides an utilize gaseous moisture difference to carry out device of evaporating relates to chemical wastewater technical field. Comprises a heating tower, a cooling tower, a centrifuge, a centrifugal mother liquor tank and a centrifugal fan; the lower part of the warming tower is communicated with a centrifugal fan, the bottom of the warming tower is communicated with a centrifugal machine, the other end of the centrifugal machine is connected with a centrifugal mother liquid tank, and the centrifugal mother liquid tank is communicated with the lower part of the warming tower; the lower part of the warming tower is also communicated with the top of the warming tower through the heat exchange assembly, special filler is arranged in the warming tower, the top of the warming tower is connected with a flow guide pipe, the other end of the flow guide pipe is communicated with the cooling tower and extends to the bottom in the cooling tower, a tower tray is arranged in the cooling tower, and the bottom of the cooling tower is also communicated with the heat exchange assembly; still include the water-cooling circulation subassembly, water-cooling circulation subassembly and cooling tower intercommunication, the cooling tower top still is connected with heat exchange assemblies. The device has the advantages of low energy consumption, simple and convenient maintenance, high comprehensive utilization rate and lower manufacturing cost.
Description
Technical Field
The utility model relates to a chemical industry waste water technical field particularly, relates to an utilize gaseous moisture difference to carry out device that evaporates.
Background
With the rapid development of the national economic construction, industrial enterprises are continuously developed and strengthened, and the method plays a positive promoting role in promoting the national economy of China. However, in the future of development, a large amount of hazardous waste is generated, including heavy metal waste, waste emulsion, waste organic solvent, waste paint, waste cyanide, waste drug, etc. The hazardous waste has complex components, and if the hazardous waste is not treated and disposed properly, the hazardous waste not only easily causes pollution to the atmosphere, water and soil, but also seriously affects the ecological environment and the physical health of people. At present, the hazardous waste is mainly disposed of in a manner of reduction treatment + disposal, sealing as it is, and the like. Obviously, the original storage mode is unrealistic due to the large amount of dangerous waste, wide range, miscellaneous and serious harm. The method for reducing the amount mainly adopts incineration reduction at present, when mixed hazardous waste enters a rotary kiln for combustion and volume reduction, a certain amount of harmful gas is generated, and in order to meet the emission requirement, the harmful gas and the like must be eliminated, so that slaked lime is sprayed in flue gas to neutralize the harmful gas: and the neutralized low-temperature flue gas enters a bag-type dust collector for purification and then enters an alkaline liquid spray tower for cleaning to remove residual harmful gas. And discharging the clean flue gas washed by the alkali liquor through a chimney. The high-salt-content wastewater generated by washing cannot be directly discharged due to high concentration, but the high-salt-content wastewater is difficult to treat, high in energy consumption and high in investment; in the field of zero discharge of wastewater treatment, after wastewater is concentrated through a membrane, a multi-effect evaporator or MVR evaporator is generally used for evaporating wastewater, salt and organic matters in water are separated from the water, the formed condensed water is recycled, and the salt is transported outside.
MVR and multi-effect evaporator are used for salt chemical industry field comparatively ripe, but in waste water zero release operating mode, because the complexity of waste water composition makes multi-effect or MVR evaporator be difficult to steady operation for a long time, mainly have following problem:
1. multiple-effect or MVR evaporation equipment is too heavy, and spare part is more moreover, and it is all more troublesome to dismantle and install, and multiple-effect evaporation's theory of operation is complicated, and the temperature in the intraductal at any time of observing needs someone always to be beside the machine, and it is more complicated that non-technical personnel operate.
2. During multi-effect evaporation, the heat transfer temperature difference loss is increased along with the increase of the effect number, so that the production intensity of the evaporator is greatly reduced, the equipment cost is doubled, and certain investment cost is required to be increased when the effect number is too much.
3. The MVR evaporator has the advantages of small effective temperature difference, large heat exchange area, overhigh equipment cost and small evaporation capacity activity space, the output of secondary steam of the evaporation capacity is increased on the original design capacity, the running current of a compressor is increased, and the evaporation capacity is reduced due to temperature reduction. After the predicted evaporation amount is reduced, the secondary steam is not enough to meet the requirement of the inlet of the compressor, surging is caused, the steam amount is reduced, and the compressor is forced to stop.
4. Multiple-effect or MVR evaporation equipment adopts the mode of negative pressure evaporation, and the equipment main part needs to adopt the metal of expensive price, and the cost is high, and is very easily corroded under high temperature.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize gaseous moisture difference to carry out device that evaporates, it can be directed against in the not enough of prior art, proposes the solution, has energy consumption few, maintains simple and conveniently, and comprehensive utilization is high, the comparatively cheap characteristics of cost.
A device for evaporating by utilizing gas humidity difference comprises a heating tower, a cooling tower, a centrifugal machine, a centrifugal mother liquid tank and a centrifugal fan; the lower part of the warming tower is communicated with a centrifugal fan, the bottom of the warming tower is communicated with a centrifugal machine, the other end of the centrifugal machine is connected with a centrifugal mother liquid tank, and the centrifugal mother liquid tank is communicated with the lower part of the warming tower;
the lower part of the warming tower is also communicated with the top of the warming tower through the heat exchange assembly, special filler is arranged in the warming tower, the top of the warming tower is connected with a flow guide pipe, the other end of the flow guide pipe is communicated with the cooling tower and extends to the bottom in the cooling tower, a tower tray is arranged in the cooling tower, and the bottom of the cooling tower is also communicated with the heat exchange assembly;
still include water-cooling circulation subassembly, water-cooling circulation subassembly and cooling tower bottom, cooling top of the tower portion intercommunication, cooling top of the tower portion still is connected with heat exchange assembly.
The utility model discloses an in some embodiments, still include the pump sending subassembly, the pump sending subassembly includes mother liquor circulating pump, comdenstion water cooling pump, preheats circulating pump and intensification circulating pump, and the mother liquor circulating pump sets up between centrifugal mother liquor groove and intensification tower lower part, and the comdenstion water cooling pump sets up between water-cooling circulation subassembly and cooling tower lower part, preheats the circulating pump and sets up between cooling tower lower part and heat exchange assemblies, and the intensification circulating pump sets up between intensification tower lower part and heat exchange assemblies.
The utility model discloses an in some embodiments, above-mentioned heat exchange assemblies is including preheating heat exchanger and steam heat exchanger, preheat the heat exchanger and be connected with intensification tower lower part, preheating circulating pump and steam heat exchanger respectively, and steam heat exchanger still is connected with intensification top of the tower portion.
In some embodiments of the present invention, a demister is disposed at the upper end of the temperature rising tower, and the demister is disposed above the special filler.
The utility model discloses an in some embodiments, the upper end still sets up sprinkler in above-mentioned intensification tower, and sprinkler sets up in the top of demister, and communicates with steam heat exchanger.
The utility model discloses an in some embodiments, the upper end is provided with the water distribution structure in the above-mentioned cooling tower, and the water distribution structure includes the water-locator, and the water-locator links to each other with the water-cooling circulation subassembly.
In some embodiments of the present invention, the trays are sequentially arranged in the cooling tower from top to bottom, the number of the trays is at least 2, and the height of the trays is 15-25 cm.
In some embodiments of the present invention, the special packing comprises a pore plate corrugated structured packing.
In some embodiments of the present invention, the water-cooling circulation assembly includes a condensed water heat exchanger, and the condensed water heat exchanger is provided with a condensed water circulation outlet and a condensed water circulation inlet.
The utility model discloses an in some embodiments, still be provided with on the above-mentioned comdenstion water heat exchanger and send mouth of a river and water inlet, send the top intercommunication of mouth of a river and cooling tower, the water inlet communicates with the bottom of cooling tower.
The embodiment of the utility model provides an at least, have following advantage or beneficial effect:
the effect is that energy consumption is low; the utility model is provided with a heating tower, a cooling tower, a centrifuge, a centrifugal mother liquid tank and a centrifugal fan; the lower part of the warming tower is communicated with a centrifugal fan, the bottom of the warming tower is communicated with a centrifuge, the other end of the centrifuge is connected with a centrifugal mother liquid tank, and the centrifugal mother liquid tank is communicated with the lower part of the warming tower; the lower part of the warming tower is also communicated with the top of the warming tower through the heat exchange assembly, special filler is arranged in the warming tower, the top of the warming tower is connected with a flow guide pipe, the other end of the flow guide pipe is communicated with the cooling tower and extends to the bottom in the cooling tower, a tower tray is arranged in the cooling tower, and the bottom of the cooling tower is also communicated with the heat exchange assembly; still include water-cooling circulation subassembly, water-cooling circulation subassembly and cooling tower bottom, cooling top of the tower portion intercommunication, cooling top of the tower portion still is connected with heat exchange assembly. Further, heat exchange assembly is including preheating heat exchanger and steam heat exchanger, the utility model discloses waste water gets into intensification tower lower part, with tower bottom liquid pump to preheating the heat exchanger, utilize the condensate (come from the water-cooling circulation subassembly, after the cooling tower heat transfer, have certain heat) heat as the heat medium to heat up successor afterflow to steam heat exchanger, rise the temperature to certain higher temperature, then get into through the connecting pipe at top of the tower portion, utilize the shower nozzle to spread water on the special material surface of packing. The air utilizes the centrifugal fan to get into the lower part of the warming tower, the gas rises naturally, flows through the special filler, exchanges heat with the water on the surface of the filler, part of the waste water is vaporized to the air, and flows to the cooling tower along with the air blown in, the utility model discloses a different with the boiling evaporation principle of the traditional evaporator (MVR, multi-effect evaporator), the surface vaporization mode that this application adopted can control to carry out spontaneous evaporation under the lower condition of temperature, has reduced energy consumption; and the steam source of the steam heat exchanger is directly the boiler of the factory building, and the heat source of the heat exchange does not need to consume additional energy. Therefore, the method has the characteristic of low energy consumption.
The effect is two, and the maintenance is simple and convenient; the utility model discloses be provided with the intensification tower, the cooling tower, centrifuge, centrifugation mother liquor groove and centrifugal fan, still include heat exchange assemblies and water-cooling circulation subassembly, furthermore, still include the pump sending subassembly, the water power of sending of whole application all comes from the pump sending subassembly, the power of sending gas comes from centrifugal fan, there is not other unnecessary electrical structure and complicated mechanical structure, power equipment only includes pump sending subassembly and centrifugal fan, the plant maintenance is simple, the easy-to-wear spare is few, whole device later stage life is longer, it is all more simple and convenient to go the maintenance after and the maintenance.
The effect is three, and the comprehensive utilization rate is high; the utility model discloses the energy heat source of the heat transfer of whole device is from heat exchange assembly, and furtherly, heat exchange assembly is including preheating heat exchanger and steam heat exchanger. The heat source of the preheating heat exchanger mainly comes from the cooling tower, hot air (from the heating tower) in the cooling tower is cooled through water-cooling circulation (spraying cold water of the water-cooling circulation), the temperature of the cold water is changed into hot water, the hot water of the part is communicated with the preheating heat exchanger, preheating treatment of waste water at the bottom of the heating tower can be achieved, then the waste water is heated through the steam heat exchanger, steam of the steam heat exchanger comes from a boiler in a factory building, heat exchange is carried out between generated high-temperature water and fresh air blown in by a centrifugal fan, the high-temperature water is vaporized and is sent into the cooling tower to circulate in sequence. Therefore, the steam is used as a heat source for heating, and the waste heat (the waste heat of the cooling tower) can be used as a heat source for preheating, so that the purpose of treating waste by waste is achieved, and the comprehensive utilization rate of the steam-steam preheating device is high.
The effect is four, and the manufacturing cost is lower; the utility model discloses a set up intensification tower, cooling tower, centrifuge, centrifugation mother liquor groove and centrifugal fan, what whole device operational mode adopted is the atmospheric evaporation, vaporization heat transfer mode, and the main part (intensification tower and cooling tower) can adopt non-metallic material, and the cost is lower relatively, and extremely corrosion-resistant, succinctly has reduced use cost, and purchasing cost is also comparatively cheap, is fit for using widely in this field.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall operation of the embodiment of the present invention.
Icon: 1-a heating tower; 2-a cooling tower; 3-a steam heat exchanger; 4-preheating a heat exchanger; 5-special filler; 6-a demister; 7-a tray; 8-heating circulating pump; 9-preheating a circulating pump; 10-a centrifuge; 11-centrifuging the mother liquor tank; 12-mother liquor circulating pump; 13-a condensate cooling pump; 14-a condensate water heat exchanger; 15-a flow guide pipe; 16-centrifugal fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if terms such as orientation words and the like appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the utility model is usually placed when the utility model is used, and is only for convenience of description and simplification of the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, "a plurality" means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
Referring to fig. 1, fig. 1 is a specific embodiment of the present invention.
The embodiment provides a device for evaporating by utilizing the humidity difference of gas, which comprises a heating tower 1, a cooling tower 2, a centrifuge 10, a centrifugal mother liquor tank 11 and a centrifugal fan 16; the lower part of the warming tower 1 is communicated with a centrifugal fan 16, fresh air is sent into the warming tower 1 by the centrifugal fan 16, the bottom of the warming tower 1 is communicated with a centrifugal machine 10, the other end of the centrifugal machine 10 is connected with a centrifugal mother liquid tank 11, and the centrifugal mother liquid tank 11 is communicated with the lower part of the warming tower 1; the device comprises a heating tower 1, a flow guide pipe 15, a cooling tower 2, a tower tray 7, a heat exchange assembly, a special filler 5, a special filler; still include water-cooling circulation subassembly, water-cooling circulation subassembly and 2 bottoms of cooling tower, 2 tops of cooling tower intercommunication, 2 tops of cooling tower still are connected with heat exchange assemblies. After waste water entered into rising temperature tower 1 bottom, send into heat exchange assembly and heat the back, spill hot water from rising temperature tower 1 top, spill on special filler 5, centrifugal fan 16 at this moment sends into outside fresh air (wind) from rising temperature tower 1 bottom, gas rises in rising temperature tower 1, take place heat exchange with the high temperature waste water that the upper end was sprayed, partial high temperature waste water takes place vaporization phenomenon, the high temperature water of vaporization is sent into in 2 bottoms of cooling tower through honeycomb duct 15, cool down and the heat transfer is carried out to water-cooling circulation subassembly. After the circulation operation, as the waste water is continuously partially vaporized in the warming tower 1, the residual waste water slowly reaches the crystallization saturation (mainly salt), at this time, the waste water reaching the crystallization saturation at the bottom is sent to the centrifuge 10 for salt water separation, the separated salt is separately collected and then carried away, the separated waste water is sent to the centrifugation mother liquid tank 11 for storage, then the mother liquid (the waste water after crystallization) in the centrifugation mother liquid tank 11 is continuously sent to the bottom of the warming tower 1 for circulation heating, and the separation is performed in sequence and circulation.
The system further comprises a pump feeding assembly, wherein the pump feeding assembly comprises a mother liquor circulating pump 12, a condensate water cooling pump 13, a preheating circulating pump 9 and a heating circulating pump 8, and the mother liquor circulating pump 12 is arranged between the centrifugal mother liquor tank 11 and the lower part of the heating tower 1 and is used for continuously feeding mother liquor (wastewater subjected to salt separation) in the centrifugal mother liquor tank 11 to the bottom of the heating tower 1; the condensed water cooling pump 13 is arranged between the water cooling circulation assembly and the lower part of the cooling tower 2 and is used for sending condensed water to the top of the cooling tower 2 and spraying the condensed water from top to bottom; the condensed water preheating circulating pump 9 is arranged between the lower part of the cooling tower 2 and the heat exchange assembly and is used for sending the heated condensed water to the heat exchange assembly to preheat the wastewater; the heating circulating pump 8 is arranged between the lower part of the heating tower 1 and the heat exchange assembly and is used for sending the waste water at the bottom of the heating tower 1 into the heat exchange assembly for heating treatment, so that subsequent vaporization with fresh air can be realized.
In this embodiment, the heat exchange assembly includes preheating heat exchanger 4 and steam heat exchanger 3, preheating heat exchanger 4 is connected with warming tower 1 lower part, preheating circulating pump 9 and steam heat exchanger 3 respectively, and steam heat exchanger 3 still is connected with warming tower 1 top. The steam heat exchanger 3 is connected with the boiler, and the boiler directly provides high-temperature steam for the boiler, and after the high-temperature steam heat exchange is completed, steam condensate water is formed and flows back to the boiler to be heated again, and the circulation is carried out in sequence. The steam heat exchanger 3 here enables the waste water to reach 80 c, but in other embodiments also other temperatures, here for illustration purposes. The heat source of preheating heat exchanger 4 is the intensification comdenstion water (the comdenstion water at this moment has the uniform temperature) after the comdenstion water that comes from the water-cooling circulation subassembly exchanges heat with the evaporation waste water in the cooling tower 2, and the intensification comdenstion water is sent to preheating heat exchanger 4 and is preheated with waste water, makes it reach the uniform temperature to reduce the heat transfer time at steam heat exchanger 3, improve holistic heat exchange efficiency, and then improve the work efficiency of whole this application.
In this embodiment, the water-cooling circulation assembly includes a condensate water heat exchanger 14, the condensate water heat exchanger 14 is provided with a condensate water circulation outlet and a condensate water circulation inlet, and the condensate water circulation outlet and the condensate water circulation inlet are connected to an external condensate water system (not specifically illustrated in the drawings); the condensed water heat exchanger 14 is also provided with a water feeding port and a water inlet, the water feeding port is communicated with the top of the cooling tower 2, the water inlet is communicated with the bottom of the cooling tower 2, and condensed water is fed to the top of the cooling tower 2 through the water feeding port, sprayed down and sent to the heating tower 1 to exchange heat with high-temperature vaporized wastewater for cooling; the condensed water after heat exchange is sent into the condensed water heat exchanger 14 through the water inlet and then discharged through the condensed water circulating outlet for recycling.
In one embodiment of the present invention, a demister 6 is installed at the upper end in the temperature rising tower 1, and the demister 6 is disposed above the special packing 5; i.e. below the draft tube 15, the demister 6 means that a large amount of liquid is entrained in the secondary steam during the evaporation operation, and in order to prevent loss of useful products or contamination of the condensed water, it is also necessary to reduce entrained liquid froth, so the demister 6 is provided near the steam outlet. The form of demister 6 is many, but the top at the evaporimeter of direct mount that often adopts, what not often adopt installs outside the evaporimeter, and demister 6 of this embodiment sets up at honeycomb duct 15 mouths, and the liquid foam can be reduced through demister 6 to vaporization waste water, when reducing the comdenstion water heat transfer and mixing, to its pollution, keeps the comdenstion water to reuse for a long time.
The utility model discloses in an embodiment of the embodiment, the upper end still sets up sprinkler in above-mentioned intensification tower 1, and sprinkler sets up in demister 6's top, and communicates with steam heat exchanger 3. The spraying device is arranged, so that high-temperature wastewater after heat exchange can be uniformly sprayed on the special packing 5, the special packing 5 of the embodiment adopts the orifice plate corrugated structured packing, the high-temperature wastewater is uniformly distributed on the orifice plate corrugated structured packing, the gas-liquid contact area is increased, and the thermal contact efficiency is improved; in addition, in the orifice plate corrugated structured packing of the present embodiment, it is preferable that the orifice plate is a perforated folded plate, and it is further preferable that each folded plate has a size of 2cm and an aperture of 5 mm. It should also be noted that the spraying device is preferably a plurality of nozzles, although other spraying devices are possible. The special filler 5 may also be other forms of fillers, which are not limited here.
The utility model discloses in the embodiment of the utility model provides an in the above-mentioned cooling tower 2 upper end be provided with the water distribution structure, the water distribution structure includes the water-locator, the water-locator links to each other with water-cooling circulation subassembly. Water distribution refers to the arrangement of water quantity according to a certain rule on a certain working area, and most commonly, water is distributed uniformly on a working surface. The device for completing the task is called a water distributor, and in the actual situation, a water distribution head is generally selected, and the style of the water distribution head is not limited.
The utility model discloses in the embodiment of the utility model provides an in the implementation of above-mentioned tray 7 from top to bottom sets gradually in cooling tower 2, and tray 7 sets up quantity for 6, and tray 7 highly is 20 cm. Tray 7 is the main component of the temperature reducing column 2 that provides the gas-liquid mass and heat transfer field. The two fluids are closely subjected to heat and mass exchange between two phases, and the heat exchange efficiency is accelerated.
In specific implementation, a water distributor is arranged at the top of the cooling tower 2 in the embodiment and used for uniformly distributing circulating condensed water on the surface of a tower tray 7, the tower tray 7 is arranged in the middle and used for vapor-liquid contact, the height of each layer of the tower tray 7 is 20cm, vaporized wastewater enters the tower from the lower part and rises to the middle upper part from the center of the tower, a branch pipe is arranged on the upper part of each layer of the tower tray 7, and the branch pipe is inserted into the middle liquid level of the tower tray 7 by about 5mm and fully contacted with the condensed water.
The embodiment of the utility model provides a principle is implemented in the work: when the utility model discloses carry out the during operation, directly utilize the pipeline to go to discharge waste water to intensification tower 1 in, for the convenience of control, can be provided with the switch on this pipeline and control. After the wastewater enters the bottom of the warming tower 1, the wastewater is sent to a heat exchange assembly (firstly preheated by a preheating heat exchanger 4 and then heated at high temperature by a steam heat exchanger 3) for heating, high-temperature wastewater is sprayed down from the top of the warming tower 1 (uniformly sprayed by a spraying device), the high-temperature wastewater is uniformly sprayed on the special filler 5, external fresh air (wind) is sent from the bottom of the warming tower 1 by a centrifugal fan 16 at the moment, the gas rises in the warming tower 1 to exchange heat with the high-temperature wastewater sprayed at the upper end (mainly the high-temperature wastewater on the special filler 5), partial wastewater can generate vaporization, the vaporized high-temperature wastewater is sent into the inner bottom of the cooling tower 2 by a guide pipe 15 after being defoamed by a demister 6, at the moment, the condensate water heat exchanger 14 is communicated with the top of the cooling tower 2, and condensed water is sent to the top of the cooling tower 2, spraying the waste water, and exchanging heat with high-temperature vaporized waste water (discharged from the bottom of the cooling tower 2) sent by the heating tower 1 to cool; the condensed water after heat exchange is sent into a condensed water heat exchanger 14 (the other part is sent into a preheating heat exchanger 4 through a preheating circulating pump 9 for heat exchange, and after the heat exchange is completed, the condensed water is sent into the upper part of the cooling tower 2 again for spraying and then is discharged through a condensed water circulating outlet. After the continuous work is carried out in a circulating manner, as the continuous part of the wastewater in the warming tower 1 is vaporized and discharged, the residual wastewater slowly reaches the crystallization saturation (mainly salt), at the moment, the wastewater reaching the crystallization saturation at the bottom is sent into the centrifuge 10 to be subjected to salt water separation, the separated salt is separately collected and then transported away, the separated wastewater is sent into the centrifugal mother liquor tank 11 to be stored, then the mother liquor (the wastewater subjected to crystallization and precipitation) in the centrifugal mother liquor tank 11 is continuously sent into the bottom of the warming tower 1 to be subjected to circulating heating, the salt water separation is carried out in a circulating manner in sequence, so that the salt in the wastewater is recovered, and the condensed water can also be continuously recycled.
In summary, the utility model is provided with a heating tower 1, a cooling tower 2, a centrifuge 10, a centrifugal mother liquid tank 11 and a centrifugal fan 16; the lower part of the warming tower 1 is communicated with a centrifugal fan 16, the bottom of the warming tower 1 is communicated with a centrifuge 10, the other end of the centrifuge 10 is connected with a centrifugal mother liquid tank 11, and the centrifugal mother liquid tank 11 is communicated with the lower part of the warming tower 1; the device comprises a heating tower 1, a flow guide pipe 15, a cooling tower 2, a tower tray 7, a heat exchange assembly, a special filler 5, a special filler; still include water-cooling circulation subassembly, water-cooling circulation subassembly and 2 bottoms of cooling tower, 2 tops of cooling tower intercommunication, 2 tops of cooling tower still are connected with heat exchange assemblies. Further, heat exchange assembly is including preheating heat exchanger 4 and steam heat exchanger 3, the utility model discloses waste water gets into 1 lower part in intensification tower, with liquid pump to preheating heat exchanger 4 at the bottom of the tower, utilize the condensate heat to heat up successor afterflow to steam heat exchanger 3 as the heat medium, rise the temperature to certain higher temperature, then get into through the connecting pipe at top of the tower portion, utilize the shower nozzle to disperse water on filling special-purpose material surface. The air utilizes the centrifugal fan 16 to enter the lower part of the tower, the gas rises naturally, flows through the filler, exchanges heat with the water on the surface of the filler, part of the waste water is vaporized to the air, and flows to the cooling tower 2 along with the blown air, the utility model discloses a different with the boiling evaporation principle of the traditional evaporator (MVR, multi-effect evaporator), this application adopts the surface vaporization mode, can control to carry out spontaneous evaporation under the lower condition of temperature, has reduced energy consumption; and the steam source of the steam heat exchanger 3 is directly the boiler of the factory building, and the heat source of the heat exchange does not need to consume additional energy. Therefore, the method has the characteristic of low energy consumption. The utility model discloses be provided with intensification tower 1, cooling tower 2, centrifuge 10, centrifugation mother liquor groove 11 and centrifugal fan 16, still include heat transfer module and water-cooling circulation subassembly, furthermore, still include the pump sending subassembly, the hydraulic power of sending of whole application all comes from the pump sending subassembly, the power of sending gas comes from centrifugal fan 16, do not have other unnecessary electrical structure and complicated mechanical structure, power equipment only includes pump sending subassembly and centrifugal fan 16, the plant maintenance is simple, the easy-to-wear part is few, whole device later stage life is longer, go to maintain and the maintenance after all more simple and convenient. The utility model discloses the energy heat source of the heat transfer of whole device is from heat transfer assembly, and furtherly, heat transfer assembly is including preheating heat exchanger 4 and steam heat exchanger 3. The heat source of the preheating heat exchanger 4 mainly comes from the cooling tower 2, and here, since hot air (from the warming tower 1) in the cooling tower 2 is cooled through water cooling circulation (spraying condensed water of the water cooling circulation), the temperature of the cold water is changed into hot water, the hot water of the part is communicated with the preheating heat exchanger 4, the waste water at the bottom of the warming tower 1 can be preheated and then is heated through the steam heat exchanger 3, steam of the steam heat exchanger 3 comes from a boiler in a factory, the generated high-temperature water exchanges heat with fresh air blown in by the centrifugal fan 16, the high-temperature water is vaporized and is sent into the cooling tower 2 to circulate in sequence. Therefore, the steam is used as the heat source to heat, and the waste heat (the waste heat of the cooling tower 2 and the condensed water after heat exchange as a carrier) can be used as the heat source to preheat, so that the purpose of treating waste by waste is achieved, and the comprehensive utilization rate of the steam-water separator is high. The utility model discloses a set up intensification tower 1, cooling tower 2, centrifuge 10, centrifugation mother liquor groove 11 and centrifugal fan 16, what whole device operation mode adopted is the atmospheric evaporation, vaporization heat transfer mode, and the main part (intensification tower 1 and cooling tower 2) can adopt non-metallic material, and the cost is lower relatively, and extremely corrosion-resistant, has succinctly reduced use cost, and purchasing cost is also comparatively cheap, is fit for using widely in this field.
To sum up, the embodiment of the utility model provides an utilize gaseous moisture difference to carry out device that evaporates, it can be directed against in the not enough of prior art, proposes the solution, has energy consumption and lacks, maintains simple and conveniently, and comprehensive utilization is high, and the characteristics that cost is comparatively cheap are fit for very much using widely in chemical industry waste water technical field.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A device for evaporating by utilizing the humidity difference of gas is characterized by comprising a heating tower, a cooling tower, a centrifugal machine, a centrifugal mother liquid tank and a centrifugal fan; the lower part of the warming tower is communicated with the centrifugal fan, the bottom of the warming tower is communicated with the centrifugal machine, the other end of the centrifugal machine is connected with the centrifugal mother liquid tank, and the centrifugal mother liquid tank is communicated with the lower part of the warming tower;
the lower part of the warming tower is communicated with the top of the warming tower through the heat exchange assembly, special packing is arranged in the warming tower, the top of the warming tower is connected with a flow guide pipe, the other end of the flow guide pipe is communicated with the cooling tower and extends to the bottom in the cooling tower, a tower tray is arranged in the cooling tower, and the bottom of the cooling tower is also communicated with the heat exchange assembly;
still include the water-cooling circulation subassembly, the water-cooling circulation subassembly with cooling tower bottom, cooling top of the tower portion intercommunication, the cooling top of the tower portion still with heat exchange assemblies connects.
2. The device for evaporating by utilizing the humidity difference of gas as claimed in claim 1, further comprising a pump feeding assembly, wherein the pump feeding assembly comprises a mother liquor circulating pump, a condensate water cooling pump, a preheating circulating pump and a warming circulating pump, the mother liquor circulating pump is arranged between the centrifugal mother liquor tank and the lower part of the warming tower, the condensate water cooling pump is arranged between the water cooling circulating assembly and the lower part of the cooling tower, the preheating circulating pump is arranged between the lower part of the cooling tower and the heat exchange assembly, and the warming circulating pump is arranged between the lower part of the warming tower and the heat exchange assembly.
3. The device for evaporation by utilizing humidity difference of gas as claimed in claim 2, wherein said heat exchange assembly comprises a preheating heat exchanger and a steam heat exchanger, said preheating heat exchanger is respectively connected with said lower part of said warming tower, said preheating circulation pump and said steam heat exchanger, said steam heat exchanger is further connected with said top of said warming tower.
4. The apparatus according to claim 3, wherein a demister is provided at an upper end of the temperature rising tower, and the demister is provided above the special packing.
5. The device for evaporation by utilizing humidity difference of gas as claimed in claim 4, wherein a spraying device is further disposed at the upper end in the temperature rising tower, and the spraying device is disposed above the demister and is communicated with the steam heat exchanger.
6. The device for evaporating by utilizing the humidity difference of the gas as claimed in claim 2, wherein a water distribution structure is arranged at the upper end in the cooling tower, the water distribution structure comprises a water distributor, and the water distributor is connected with the water-cooling circulation component.
7. The device for evaporation according to claim 2, wherein said trays are arranged in sequence from top to bottom in said temperature-reducing tower, the number of said trays is at least 2, and the height of said trays is 15-25 cm.
8. The apparatus for evaporation utilizing humidity difference of gas according to claim 7, wherein said dedicated packing comprises orifice plate corrugated structured packing.
9. The apparatus for performing evaporation by utilizing moisture content difference of gas according to any one of claims 1 to 8, wherein the water-cooling circulation assembly comprises a condensed water heat exchanger, and a condensed water circulation outlet and a condensed water circulation inlet are arranged on the condensed water heat exchanger.
10. The device for evaporation by utilizing humidity difference of gas as claimed in claim 9, wherein said condensed water heat exchanger is further provided with a water feeding port and a water inlet port, said water feeding port is communicated with the top of said cooling tower, and said water inlet port is communicated with the bottom of said cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022231193.5U CN212662725U (en) | 2020-09-30 | 2020-09-30 | Device for evaporating by utilizing humidity difference of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022231193.5U CN212662725U (en) | 2020-09-30 | 2020-09-30 | Device for evaporating by utilizing humidity difference of gas |
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| CN212662725U true CN212662725U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022231193.5U Active CN212662725U (en) | 2020-09-30 | 2020-09-30 | Device for evaporating by utilizing humidity difference of gas |
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| CN (1) | CN212662725U (en) |
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2020
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