Resource recycling device for waste phosphoric acid

Abstract

The utility model is applicable to the technical field of waste phosphoric acid recovery, and provides a waste phosphoric acid resource recycling device which comprises a box body, the box body is used for storing waste liquid after phosphoric acid replacement, and a blow-off pipe is mounted on the box body; the two filter tanks are both mounted at the top of the box body, and ion exchange resin is filled in the filter tanks; the liquid supplementing pipe is mounted on the two filter tanks, the liquid supplementing pipe is connected with a liquid outlet of waste liquid storage equipment, and the liquid supplementing pipe can be connected with the blow-off pipe; and the liquid discharge pipe is mounted at the bottoms of the two filter tanks. According to the resource recycling device for the waste phosphoric acid, the phosphoric acid in the waste liquid can be recycled, meanwhile, the waste liquid can be concentrated in the recycling process, and therefore the recycling rate of the phosphoric acid can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste phosphoric acid recovery, and particularly relates to a resource recycling device for waste phosphoric acid. Background Art

[0002] In the process of metal surface treatment, acidic detergents are often used for surface pickling. These waste liquids contain phosphoric acid. Recycling the phosphoric acid in these waste liquids can not only reduce the environmental burden but also lower the production cost.

[0003] When using the ion exchange method to recover waste phosphoric acid, it is impossible to perform cyclic ion exchange on the waste liquid containing phosphoric acid, thus making it difficult to ensure the recovery effect of waste phosphoric acid. Summary of the Utility Model

[0004] The utility model provides a resource recycling device for waste phosphoric acid, aiming to solve the problem that when using the ion exchange method to recover waste phosphoric acid, it is impossible to perform cyclic ion exchange on the waste liquid containing phosphoric acid, thus making it difficult to ensure the recovery effect of waste phosphoric acid as mentioned in the above background art.

[0005] To solve the above problems, the utility model is realized as follows. A resource recycling device for waste phosphoric acid includes: a box body for storing the waste liquid after phosphoric acid replacement, and a sewage discharge pipe is installed on the box body; two filter tanks, both of which are installed on the top of the box body. The top of the filter tank is communicated with a top connecting pipe, and the bottom of the filter tank is communicated with a bottom connecting pipe. The filter tank is filled with ion exchange resin; a liquid supplement pipe is communicated with the top connecting pipes of the two filter tanks and is connected to the liquid discharge port of the waste liquid storage device; a liquid discharge pipe is communicated with the bottom connecting pipes of the two filter tanks and extends into the box body. The liquid discharge pipe is used for discharging the waste water after ion exchange; two output pipes are installed on the two bottom connecting pipes, and the output pipes are used for discharging the flushing liquid; a cleaning component is installed on the top of the box body and is used for flushing the ion exchange resin.

[0006] Preferably, the cleaning component includes a liquid storage tank and a water pump. The liquid storage tank is installed on the top of the box body, the water pump is arranged in the liquid storage tank, and a connecting pipe is installed at the liquid discharge end of the water pump and is communicated with the two top connecting pipes.

[0007] Preferably, valves are provided on the liquid supplement pipe, the liquid discharge pipe, the two output pipes and the connecting pipe. A ventilation port is provided on the top of the liquid storage tank, and a dust-proof net is installed in the ventilation port.

[0008] Preferably, a metal box is installed on the inner side wall of the box body. A plurality of heating tubes are installed in the metal box. A stirring rod is rotatably installed in the box body. A motor is installed at the bottom of the box body. The output shaft of the motor is connected to the stirring rod.

[0009] Preferably, an exhaust pipe for discharging steam is installed at the top of the box body. A treatment box is installed on one side of the box body. The exhaust pipe extends into the treatment box. A medicament for treating harmful waste gas is poured into the treatment box.

[0010] Preferably, a metal section is provided on the exhaust pipe. A collection tank for collecting condensed water is detachably installed at the bottom of the metal section. A temperature sensor is provided in the box body. An observation window is provided on one side of the box body.

[0011] Preferably, a fan is installed at the top of the liquid storage tank. The exhaust end of the fan is installed with an exhaust pipe. The exhaust end of the exhaust pipe is located directly above the metal section.

[0012] Compared with the related art, the resource recycling device for waste phosphoric acid provided by the present utility model has the following beneficial effects:

[0013] Compared with the prior art, the resource recycling device for waste phosphoric acid provided by this solution can treat wastewater through another filter tank when flushing the ion exchange resin in one of the filter tanks by setting two filter tanks. The wastewater can be concentrated by heating the wastewater with heating tubes, which is convenient for putting the treated wastewater into purification again, realizing the recovery of waste phosphoric acid resources. The steam generated by heating can be discharged through the exhaust pipe, and the uniformity of the heating temperature of the wastewater can be increased by driving the stirring rod to rotate with the motor. Description of the Drawings

[0014] Figure 1 is the front view structural schematic diagram of a resource recycling device for waste phosphoric acid provided by the present utility model;

[0015] Figure 2 is the front view sectional structural schematic diagram of a resource recycling device for waste phosphoric acid provided by the present utility model;

[0016] Figure 3 is Figure 2 the enlarged structural schematic diagram of part A shown in ;

[0017] Figure 4 is the front view sectional structural schematic diagram of the liquid storage tank in the present utility model.

[0018] Reference numerals: 1, box body; 2, filter tank; 3, liquid replenishing pipe; 4, liquid discharging pipe; 5, output pipe; 6, liquid storage tank; 7, water pump; 8, connecting pipe; 9, valve; 10, vent port; 11, metal box; 12, heating pipe; 13, stirring rod; 14, motor; 15, treatment box; 16, exhaust pipe; 17, metal section; 18, collection tank; 19, fan; 20, exhaust duct; 21, observation window; 22, sewage discharge pipe. Detailed implementation manners

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order; the terms "inner", "outer", "left", "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0020] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the present utility model provides a resource recycling device for waste phosphoric acid, as Figures 1-4As shown in the figure, the resource recycling device for waste phosphoric acid includes: a box body 1, which is used to store the waste liquid after phosphoric acid replacement. A sewage discharge pipe 22 is installed on the box body 1; two filter tanks 2, both of the two filter tanks 2 are installed on the top of the box body 1. The top of the filter tank is communicated with a top connecting pipe, and the bottom of the filter tank is communicated with a bottom connecting pipe. The filter tank 2 is filled with ion exchange resin; a liquid supplement pipe 3, the liquid supplement pipe 3 is communicated with the top connecting pipes of the two filter tanks 2, and the liquid supplement pipe 3 is connected to the liquid discharge port of the waste liquid storage device; a liquid discharge pipe 4, the liquid discharge pipe 4 is communicated with the bottom connecting pipes of the two filter tanks 2, and the liquid discharge pipe 4 extends into the box body 1. The liquid discharge pipe 4 is used to discharge the waste water after ion exchange; two output pipes 5, the two output pipes 5 are installed on the two bottom connecting pipes. The output pipe 5 is used to discharge the flushing liquid; a cleaning component, the cleaning component is installed on the top of the box body 1, and the cleaning component is used to flush the ion exchange resin.

[0022] In this embodiment, the box body 1 is used to store the waste liquid after phosphoric acid replacement. As the center of the entire recovery system, it collects and temporarily stores the waste liquid. The filter tank 2 is used to selectively adsorb phosphoric acid in the waste liquid to realize the separation and recovery of phosphoric acid. Through ion exchange, phosphoric acid in the waste liquid is efficiently extracted, the recovery efficiency is improved, and environmental pollution is reduced. The liquid supplement pipe 3 realizes the automatic replenishment of the waste liquid. At the same time, it can be connected to the sewage discharge pipe 22 for the waste liquid circulation of the system. The liquid discharge pipe 4 discharges the waste water after ion exchange into the box body 1, and after concentration treatment, it is put into the filter tank 2 again for phosphoric acid recovery. Through cyclic treatment, the treatment efficiency of the waste water and the recovery rate of phosphoric acid are improved. The independent discharge of the flushing liquid ensures the flushing effect and avoids cross-contamination. The output pipe 5 is specifically used to discharge the flushing liquid for flushing the filter tank 2 and the ion exchange resin, keeping the resin clean and the exchange efficiency. Regular flushing can effectively prevent resin blockage and pollution, extend the service life of the resin, and ensure the continuous high efficiency of phosphoric acid recovery.

[0023] In a further preferred embodiment of the present invention, the cleaning component includes a liquid storage tank 6 and a water pump 7. The liquid storage tank 6 is installed on the top of the box body 1, the water pump 7 is arranged in the liquid storage tank 6, and a connecting pipe 8 is installed at the liquid discharge end of the water pump 7. The connecting pipe 8 is communicated with the two top connecting pipes.

[0024] In this embodiment, the liquid storage tank 6 is used to store cleaning water or a specific cleaning solution, providing the required medium for flushing the ion exchange resin, reducing the operation of frequent liquid addition, and improving the convenience and efficiency of the cleaning operation. The water pump 7 pumps the cleaning liquid in the liquid storage tank 6 to the filter tank 2 by generating pressure, strongly flushing the ion exchange resin to ensure that the cleaning liquid can evenly and efficiently scour the resin surface, thoroughly removing impurities and residues, and maintaining the cleanliness and exchange performance of the resin. The connecting pipe 8 serves as a conveying channel for the cleaning liquid, guiding the cleaning liquid discharged from the water pump 7 into the filter tank 2 to flush the resin.

[0025] In a further preferred embodiment of the present utility model, valves 9 are provided on the liquid supply pipe 3, the drain pipe 4, the two output pipes 5, and the connecting pipe 8. An air vent 10 is provided at the top of the liquid storage tank 6, and a dust-proof net is installed in the air vent 10.

[0026] In this embodiment, the valve 9 is used to control the on-off of each pipeline, achieving precise control of waste liquid supply, waste water discharge, flushing liquid discharge, and cleaning liquid conveyance, improving the operation flexibility and response speed of the system, and also facilitating cutting off the pipeline connection during maintenance and repair to ensure the safety of the operator. The air vent 10 provides a ventilation channel inside the liquid storage tank 6 to balance the air pressure inside and outside the tank. The design of the dust-proof net protects the purity of the cleaning liquid in the liquid storage tank 6 and avoids the decline of the cleaning effect caused by external pollution.

[0027] In a further preferred embodiment of the present utility model, a metal box 11 is installed on the inner side wall of the box body 1. A plurality of heating tubes 12 are installed in the metal box 11. A stirring rod 13 is rotatably installed in the box body 1, and a motor 14 is installed at the bottom of the box body 1. The output shaft of the motor 14 is connected to the stirring rod 13.

[0028] In this embodiment, the metal box 11 serves as a mounting base for the heating tubes 12, providing stable support and protecting the heating elements from the external environment. The heating tubes 12 generate heat through the electrothermal effect, heating the waste liquid in the box body 1 to evaporate the clear water and thus concentrate the waste liquid, making it more convenient for subsequent cyclic replacement. The stirring rod 13 rotates under the drive of the motor 14 to stir the waste liquid in the box body 1, increasing the temperature uniformity. The application of the motor 14 realizes the automatic control of the stirring rod 13, improving the convenience and efficiency of the operation. At the same time, the stable performance of the motor 14 ensures the continuous and uniform rotation of the stirring rod 13, providing reliable power support for the waste phosphoric acid treatment process.

[0029] In a further preferred embodiment of the present utility model, an exhaust pipe 16 for discharging steam is installed at the top of the box body 1. A treatment box 15 is installed on one side of the box body 1. The exhaust pipe 16 extends into the treatment box 15, and a medicament for treating harmful waste gas is poured into the treatment box 15.

[0030] In this embodiment, the exhaust pipe 16 is used to discharge the steam and possible accompanying harmful waste gas generated inside the box body 1 during the heating process, avoiding potential safety hazards caused by excessive internal pressure of the box body 1. At the same time, the steam and waste gas are guided to the treatment box 15 for further treatment, which helps to reduce environmental pollution. The treatment box 15, as a treatment device for steam and harmful waste gas, is filled with a chemical agent specifically used to treat these gases. Through the chemical reaction or physical adsorption of the agent, the harmful substances in the waste gas are converted into harmless or low-toxic substances, thereby reducing environmental pollution.

[0031] In a further preferred embodiment of the present utility model, a metal section 17 is provided on the exhaust pipe 16. A collection tank 18 for collecting condensed water is detachably installed at the bottom of the metal section 17. A temperature sensor is provided inside the box body 1, and an observation window 21 is provided on one side of the box body 1.

[0032] In this embodiment, the metal section 17 serves as a medium for steam condensation. Utilizing the heat conduction performance of the metal, the steam quickly condenses into water when flowing through it. The design of the metal section 17 effectively reduces the amount of steam directly discharged into the environment. At the same time, the collected condensed water can be further recycled or treated, improving the resource utilization rate. The collection tank 18 is used to collect the water condensed on the metal section 17 to prevent it from dripping onto the ground or equipment and causing corrosion. The detachable design makes the cleaning and replacement of the collection tank 18 more convenient. The temperature sensor monitors the temperature of the waste liquid inside the box body 1 in real time, providing feedback data for the control of the heating tube 12. By timely adjusting the heating power, it can ensure that the waste liquid reacts within the optimal temperature range, improving the recovery rate of phosphoric acid. The design of the observation window 21 enables the operator to understand the internal situation without opening the box body 1, improving the safety and convenience of operation. By observing changes in the color, state, etc. of the waste liquid, abnormal situations can be discovered and processed in a timely manner to ensure the smooth progress of the treatment process.

[0033] In a further preferred embodiment of the present utility model, a blower 19 is installed on the top of the liquid storage tank 6. The exhaust end of the blower 19 is installed with an exhaust pipe 20, and the exhaust end of the exhaust pipe 20 is located directly above the metal section 17.

[0034] In this embodiment, the blower 19 generates an air flow, increasing the heat exchange efficiency by increasing the air flow rate, thereby cooling the metal section 17 and condensing the steam passing through the metal section 17 into water. This not only improves the collection efficiency of the condensed water but also reduces the residence time of the steam in the air, reducing environmental pollution.

[0035] In summary, compared with the related art, by setting two filter tanks 2, the present device can treat wastewater through one filter tank 2 while flushing the ion exchange resin in the other filter tank 2. By heating the wastewater with the heating pipe 12, the wastewater can be concentrated, which is convenient for reintroducing the treated wastewater into the purification process to achieve the recovery of waste phosphoric acid resources. By setting the exhaust pipe 16, the steam generated by heating can be discharged. By driving the stirring rod 13 to rotate with the motor 14, the uniformity of the heating temperature of the wastewater can be increased.

[0036] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without making creative efforts, so as to obtain different technical solutions that essentially do not depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A waste phosphoric acid recycling device, characterized in that: include: A box body, the box body is used to store waste liquid after phosphoric acid replacement, and a sewage pipe is installed on the box body; two filter tanks, the two filter tanks are installed on the top of the box body, the top of the filter tank is connected with a top connecting pipe, and the bottom of the filter tank is connected with a bottom connecting pipe, and the filter tank is filled with ion exchange resin; a replenishment pipe, the replenishment pipe is connected with the top connecting pipes of the two filter tanks, and the replenishment pipe is connected to the drain port of the waste liquid storage device; a drain pipe, the drain pipe is connected with the bottom connecting pipes of the two filter tanks, the drain pipe extends into the box body, and the drain pipe is used to discharge the waste water after ion exchange; two output pipes, the two output pipes are installed on the two bottom connecting pipes, and the output pipes are used to discharge flushing liquid; a cleaning component, the cleaning component is installed on the top of the box body, and the cleaning component is used to flush the ion exchange resin.

2. The waste phosphoric acid recycling device according to claim 1, characterized in that: The cleaning assembly includes a liquid storage tank and a water pump. The liquid storage tank is installed on the top of the box body. The water pump is arranged in the liquid storage tank. A connecting pipe is installed at the discharge end of the water pump, and the connecting pipe is connected to two top connecting pipes.

3. The waste phosphoric acid recycling device according to claim 2, characterized in that: The liquid replenishing pipe, the liquid discharging pipe, the two output pipes and the connecting pipe are all provided with valves, and the top of the liquid storage tank is provided with an air vent, and a dustproof net is installed in the air vent.

4. The waste phosphoric acid recycling device according to claim 1, characterized in that: A metal box is installed on the inner wall of the box body, a plurality of heating tubes are installed in the metal box, a stirring rod is rotatably installed in the box body, a motor is installed at the bottom of the box body, and an output shaft of the motor is connected to the stirring rod.

5. The waste phosphoric acid recycling device according to claim 2, characterized in that: An exhaust pipe for discharging steam is installed on the top of the box body, a treatment box is installed on one side of the box body, the exhaust pipe extends into the treatment box, and the treatment box is filled with a reagent for treating harmful exhaust gas.

6. The waste phosphoric acid recycling device according to claim 5, characterized in that: The exhaust pipe is provided with a metal section, a collecting tank for collecting condensed water is detachably mounted on the bottom of the metal section, a temperature sensor is provided in the box body, and an observation window is provided on one side of the box body.

7. The waste phosphoric acid recycling device according to claim 6, characterized in that: A fan is installed on the top of the liquid storage tank, an exhaust pipe is installed at the exhaust end of the fan, and the exhaust end of the exhaust pipe is located directly above the metal section.

Images