Phosphoric acid recycling low-temperature evaporation system
Technical Field
The application belongs to the technical field of phosphoric acid recovery treatment, and particularly relates to a phosphoric acid recycling low-temperature evaporation system.
Background
The metal aluminum material is a product made of aluminum and other alloy elements, and is usually manufactured by cold bending, sawing, drilling, assembling, coloring and other procedures after being processed into cast products, forged products, foils, plates, belts, pipes, bars, sectional materials and the like, wherein the main metal element is aluminum, and the performance of the aluminum material is improved by adding some alloy elements;
the metal aluminum material is required to be subjected to a surface treatment process in the production process, a large amount of phosphoric acid and mixed acid are required to be used in the surface treatment process of the metal aluminum material, and the acid is adhered to the surface of the aluminum material after the metal aluminum material is processed, so that the aluminum material brings a large amount of acid and forms an acid-water mixture in the subsequent water washing process, the existing acid water treatment device generally adopts a large amount of neutralization substances for treatment, the environment is easy to pollute and waste resources are caused, some of the devices on the market adopt high-temperature evaporation, a large amount of electric energy is required to be converted into heat energy to form phosphoric acid and water separation, the energy conservation is not facilitated, the service life of the devices is reduced due to the fact that the devices work in a high-temperature environment, and meanwhile, the high temperature is easy to cause harm to equipment maintenance personnel, so that improvement is necessary.
Disclosure of Invention
The application aims to solve the technical problems, and provides a phosphoric acid recycling low-temperature evaporation system so as to reduce energy consumption and improve the phosphoric acid recycling effect.
In view of this, the present application provides a phosphoric acid recycling low temperature evaporation system comprising:
the machine body is provided with an installation platform at the bottom;
the acid water tank is provided with a sensing assembly, an acid water inlet and an acid water outlet;
the heating device is used for heating the acid water in the acid water tank to form water vapor;
the inlet end of the water-steam separation device is communicated with the acid water tank through a steam pipe;
the controller is arranged on the machine body;
further comprises:
the negative pressure device is a vacuum pump and is connected with the steam pipe in series;
the heat exchange tube is used for uniformly guiding the heat of the heating device into the acid water tank;
the acid water tank is a sealed pressure tank, the acid water inlet and the acid water outlet are integrated on a T-shaped pipe communicated with the bottom of the acid water tank, and the water-vapor separation device, the negative pressure device, the heating device and the acid water tank are all arranged on the mounting platform.
In the technical scheme, the vacuum pump of the negative pressure device reduces the atmospheric pressure in the acid tank, acid water in the washing tank enters the acid tank through the acid water inlet under the negative pressure state, the heating device generates heat and conveys and flows a heat medium along the direction of the heat exchange tube, the heat medium exchanges heat with acid water in the acid tank in the flowing process to heat the acid water, the acid water can be evaporated at a lower temperature after the air pressure in the acid tank is reduced, and compared with the prior art, the application can effectively reduce the energy consumption, has low evaporation temperature of the acid water, is not easy to be damaged by high temperature, and is not easy to be scalded by a user.
In the above technical scheme, further, the heat exchange tube is in a spiral tube shape, the heat exchange tube is arranged in the tank wall of the acid water tank and extends upwards spirally from the bottom of the acid water tank, and the medium flow direction in the heat exchange tube is from bottom to top.
In the above technical solution, further, the method further includes:
the heat preservation sleeve is arranged on the outer surface of the acid water tank.
In the above technical scheme, further, the insulation sleeve further includes:
the heat radiation reflecting layer is fixedly arranged on the outer surface of the acid water tank;
and the aerogel film layer is arranged on the surface of the thermal radiation reflecting layer.
In the above technical solution, further, the method further includes:
the drainage device is arranged in the acid water tank and used for improving the heating uniformity and the heating rate of the acid water in the acid water tank.
In the above technical solution, further, the drainage device further includes:
the rotating motor is arranged at the top end of the acid water tank, and the output end of the rotating motor is overlapped with the central axis of the acid water tank;
the rotating rod is vertically arranged in the acid water tank and is connected with the output end of the rotating motor;
the drainage rod is horizontally arranged on the rotating rod, and can drain the acid water at the center of the acid water tank to the periphery of the acid water tank along with the rotation of the rotating rod;
the drainage rods can be symmetrically arranged along the radial direction of the rotating rod.
In the above technical solution, further, the drainage rod further includes:
the rod body is hollow with one end open, the non-open end of the rod body is connected with the rotating rod, and the open end of the rod body faces the inner wall of the acid water tank;
the water inlet is arranged at one end of the rod body, close to the rotating rod, and is communicated with the inside of the rod body, and the rotating direction of the water inlet towards the rod body is consistent;
wherein, the hollow interior of the rod body can form a drainage channel.
In the above technical solution, further, the method further includes:
the steam power generation device is arranged on the machine body and can generate power by utilizing water vapor flowing in the steam pipe.
In the above technical solution, further, the steam power generation device further includes:
the small worm wheel machine is connected with the steam pipe in series and can be driven by the steam pipe;
and the generator can generate electricity under the drive of the small turbine.
In the above technical scheme, the application further discloses an operation method suitable for the phosphoric acid recycling low-temperature evaporation system, which comprises the following steps:
s1 acid water input: the negative pressure device reduces the air pressure in the acid water tank, and after the water in the washing tank is used for treating the metal aluminum material, the generated acid water enters the acid water tank through the acid water inlet under the action of negative pressure;
s2, heating acid water: the heating device generates heat and conveys and flows the heat medium along the direction of the heat exchange tube, the heat medium exchanges heat with acid water in the acid water tank in the flowing process so as to heat the acid water, the acid water can be evaporated at a lower temperature after the air pressure in the acid water tank is reduced, and meanwhile, the drainage device can further enable the acid water and the heat medium to exchange heat sufficiently so as to improve the heating uniformity and the heating efficiency of the acid water;
s3, collecting water vapor: the water in the acid water is conveyed into a steam pipe after being evaporated, moves to a water-steam separation device along the steam pipe and is condensed into liquid water;
s4, recycling: the condensed liquid water is input into the water washing tank again and is recycled;
s5, acid water collection: the acid water in the acid water tank is concentrated and then discharged and collected through an acid water outlet for centralized treatment.
In the technical scheme, the phosphoric acid recycling low-temperature evaporation system is simple to operate, low in difficulty in the hand, good in acid water treatment effect, and capable of effectively separating water vapor for recycling, so that the phenomenon of environmental pollution is reduced, and meanwhile, the energy consumption is reduced.
The beneficial effects of the application are as follows:
1. through the arrangement of the negative pressure device, the acid water can be evaporated at a lower temperature, so that the energy consumption can be effectively reduced, the evaporation temperature of the acid water is low, the equipment is not easily damaged by high temperature, and a user is not easily scalded by high temperature;
2. through the arrangement of the heat exchange tubes, the heating uniformity and the heating efficiency of the acid water are improved;
3. the drainage device can further enable the acid water and the heat medium to perform sufficient heat exchange so as to improve the heating uniformity and the heating efficiency of the acid water;
4. the steam power generation device can fully utilize the steam and further reduce the energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic diagram of the front view structure of fig. 1 according to the present application.
Fig. 3 is a schematic diagram of the left-side view of fig. 1 according to the present application.
FIG. 4 is a schematic diagram of the cross-sectional structure of the acid tank of the present application.
FIG. 5 is a schematic view of the structure of the drainage rod of the present application.
FIG. 6 is a schematic view of the structure of the insulating layer of the present application.
The label in the figure is:
the device comprises a 1-machine body, a 100-mounting platform, a 2-acid water tank, a 200-acid water inlet, a 201-acid water outlet, a 3-heating device, a 4-water vapor separation device, a 5-steam pipe, a 6-controller, a 7-negative pressure device, an 8-heat exchange pipe, a 9-heat insulation sleeve, a 90-heat radiation reflecting layer, a 91-aerogel film layer, a 10-rotating motor, a 11-rotating rod, a 12-drainage rod, a 120-rod body, a 121-water inlet, a 122-drainage channel and a 13-steam power generation device.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Example 1:
the embodiment of the application provides a phosphoric acid recycling low-temperature evaporation system, which comprises the following components: the machine body 1, the bottom of the machine body 1 is provided with a mounting platform 100; the acid water tank 2, wherein a sensing component, an acid water inlet 200 and an acid water outlet 201 are arranged on the acid water tank 2; the heating device 3 is used for heating the acid water in the acid water tank 2 to form water vapor; the inlet end of the water-steam separation device 4 is communicated with the acid tank 2 through a steam pipe 5; a controller 6, the controller 6 being provided on the body 1;
further comprises: the negative pressure device 7 is a vacuum pump, and the negative pressure device 7 is connected with the steam pipe 5 in series; the heat exchange tube 8 is used for uniformly guiding the heat of the heating device 3 into the acid water tank 2;
wherein, sour water tank 2 is sealed pressure tank, and sour water entry 200 and sour water outlet 201 are integrated on a T pipe that communicates with sour water tank 2 bottom, and water vapor separation device 4, negative pressure device 7, heating device 3 and sour water tank 2 all set up on mounting platform 100.
Moreover, heating device 3 still includes air can heating system and air can the compressor, vapor separation device 4 adopts the conventional vapor separation structure in the art, vapor separation device 4's exit end and the washing groove intercommunication of metal aluminum product, steam outlet has been seted up at the top of acid water jar 2, the one end of vacuum pump is through steam pipe 5 and steam outlet intercommunication, thereby the other end is through steam pipe 5 and vapor separation device 4's entrance point intercommunication series connection on steam pipe 5, the sensing component includes conventional pressure sensing piece, temperature sensing piece, acid concentration sensing piece and liquid level sensing piece, still install the solenoid valve on the T-shaped pipe, controlling means is conventional intelligent cavity system and with phosphoric acid retrieval and utilization cryogenic evaporation system's each part electricity is connected in order to realize controlling.
In this embodiment, the vacuum pump of the negative pressure device 7 reduces the atmospheric pressure in the acid water tank 2, the acid water in the rinsing tank enters the acid water tank 2 through the acid water inlet 200 under the negative pressure state, the heating device 3 generates heat and conveys the heat medium along the direction of the heat exchange tube 8 to flow, the heat medium exchanges heat with the acid water in the acid water tank 2 in the flowing process so as to heat the acid water, the acid water can be evaporated at a lower temperature after the air pressure in the acid water tank 2 is reduced, compared with the prior art, the application can effectively reduce the energy consumption, the evaporation temperature of the acid water is low, the equipment is not easily damaged by high temperature, and the phenomenon that the user is not easily scalded by high temperature can be avoided.
Example 2:
the embodiment provides a phosphoric acid recycling low-temperature evaporation system, which comprises the technical scheme of the embodiment, and has the following technical characteristics that a heat exchange tube 8 is in a spiral tube shape, the heat exchange tube 8 is arranged in the tank wall of an acid water tank 2 and extends upwards spirally from the bottom of the acid water tank 2, and the flow direction of a medium in the heat exchange tube 8 is from bottom to top.
In this embodiment, the heat exchange tube 8 is spiral tubular and extends upwards from the bottom spiral of the acid water tank 2, so that the heat medium can be gradually heated from the bottom to the top in the process of exchanging heat with the acid water in the acid water tank 2 and heating the acid water, the heating uniformity and heating efficiency of the acid water are improved, the heat exchange tube 8 is not in direct contact with the acid water, the corrosion to the heat exchange tube 8 is reduced, and the service life of the heat exchange tube 8 is prolonged.
Example 3:
the embodiment provides a phosphoric acid recycling low-temperature evaporation system, which comprises the technical scheme of the embodiment, the following technical characteristics, and further comprises: the heat preservation sleeve 9, the heat preservation sleeve 9 sets up the surface at sour water pitcher 2.
The insulating sleeve 9 further includes: a heat radiation reflection layer 90, the heat radiation reflection layer 90 being fixedly provided on the outer surface of the acid water tank 2; aerogel film layer 91, aerogel film layer 91 is disposed on the surface of heat radiation reflective layer 90.
In this embodiment, through the setting of insulation cover 9 can effectively guarantee that the thermal radiation that the thermal medium produced in heat exchange tube 8 is to sour water pitcher 2 in, improved the utilization efficiency of heat energy to can effectively prevent the outward loss of heat, improve the thermal insulation performance of sour water pitcher 2.
Example 4:
the embodiment provides a phosphoric acid recycling low-temperature evaporation system, which comprises the technical scheme of the embodiment, the following technical characteristics, and further comprises: the drainage device is arranged in the acid water tank 2 and is used for improving the heating uniformity and the heating rate of the acid water in the acid water tank 2.
The drainage device further comprises: the rotary motor 10 is arranged at the top end of the acid water tank 2, and the output end of the rotary motor 10 coincides with the central axis of the acid water tank 2; the rotating rod 11 is vertically arranged in the acid tank 2, and the rotating rod 11 is connected with the output end of the rotating motor 10; the drainage rod 12 is horizontally arranged on the rotating rod 11, and the drainage rod 12 can drain the acid water at the center of the acid water tank 2 to the periphery of the acid water tank 2 along with the rotation of the rotating rod 11;
the drainage bars 12 may be provided in several numbers and symmetrically arranged in the radial direction of the rotation bar 11.
The drainage bar 12 further comprises: the rod body 120 is hollow with one end open, the non-open end of the rod body 120 is connected with the rotating rod 11, and the open end of the rod body 120 faces the inner wall of the acid tank 2; the water inlet 121 is arranged at one end of the rod body 120, which is close to the rotating rod 11, and is communicated with the inside of the rod body 120, and the rotating direction of the water inlet 121 towards the rod body 120 is consistent;
wherein, the hollow interior of the rod 120 may form a drainage channel 122.
In this embodiment, in the heating process of the acid water, the rotating motor 10 drives the rotating rod 11 to rotate so as to drive the drainage rod 12 to rotate, the water inlet 121 and the acid water impact and squeeze in the rotating process of the drainage rod 12 so that the acid water enters the drainage channel 122, the acid water continuously enters the drainage channel 122 from the water inlet 121 under the rotation of the drainage rod 12, and the acid water flows out from the opening end of the rod body after entering the drainage channel 122, so that the part of the inner center of the acid water moves to the outside so as to fully exchange heat with the heat exchange tube 8, and therefore, the heating device can fully heat the acid water.
Example 5:
the embodiment provides a phosphoric acid recycling low-temperature evaporation system, which comprises the technical scheme of the embodiment, the following technical characteristics, and further comprises:
and a steam power generator 13, wherein the steam power generator 13 is arranged on the machine body 1 and can generate power by utilizing the steam flowing in the steam pipe 5.
The steam power generation device 13 further comprises a small turbine, the small turbine is connected with the steam pipe 5 in series and can be driven by the steam pipe 5, and a generator can generate electricity under the driving of the small turbine.
In this embodiment, by setting the steam power generation device 13, steam can drive the carnot worm gear to operate in the moving process, so that the generator can generate power, the steam is fully utilized to generate electric energy, and the energy consumption is further reduced.
Example 6:
the embodiment provides an operation method of a phosphoric acid recycling low-temperature evaporation system, which comprises the following technical characteristics besides the technical scheme of the embodiment, and comprises the following steps:
s1 acid water input: the negative pressure device 7 reduces the air pressure in the acid water tank 2, and after the water in the water washing tank is used for treating the metal aluminum material, the generated acid water enters the acid water tank 2 through the acid water inlet 200 under the action of negative pressure;
s2, heating acid water: the heating device 3 generates heat and conveys and flows a heat medium along the direction of the heat exchange tube 8, the heat medium exchanges heat with acid water in the acid water tank 2 in the flowing process so as to heat the acid water, the acid water can be evaporated at a lower temperature after the air pressure in the acid water tank 2 is reduced, and meanwhile, the drainage device can enable the acid water and the heat medium to exchange heat fully so as to improve the heating uniformity and heating efficiency of the acid water;
s3, collecting water vapor: the water in the acid water is conveyed into a steam pipe 5 after being evaporated, moves to a water-steam separation device 4 along the steam pipe 5 and is condensed into liquid water;
s4, recycling: the condensed liquid water is input into the water washing tank again and is recycled;
s5, acid water collection: the acid water in the acid water tank 2 is concentrated and then discharged and collected through the acid water outlet 201 to be concentrated.
In the embodiment, the phosphoric acid recycling low-temperature evaporation system is simple to operate, low in difficulty in the hand, good in acid water treatment effect, and capable of effectively separating water vapor for recycling, so that the phenomenon of environmental pollution is reduced, and meanwhile, the energy consumption is reduced.
The embodiments of the present application have been described above with reference to the accompanying drawings, in which the embodiments of the present application and features of the embodiments may be combined with each other without conflict, the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, of the present application, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are protected by the present application.