Phosphorus sludge filtering device

Abstract

The phosphorus sludge filtering device comprises a tank body, a filtering device is arranged in the tank body, the filtering device is annularly arranged in the tank body, and a liquid inlet is formed in the middle of the tank body; a liquid discharging pipe is arranged on one side of the filtering device and communicated with the filtering device, the other end of the filtering device extends out of the tank body, and a plurality of liquid discharging openings are formed in one end of the liquid discharging pipe; a sealing cover is arranged at the upper end of the tank body and is connected with the tank body in a sealing fit manner; nitrogen inlets are formed in the sealing cover and the tank body and are communicated with the interior of the tank body; a drain outlet and a liquid outlet are formed in the bottom of the tank body, and the drain outlet and the liquid outlet are electromagnetic valves. The utility model aims to solve the problems of non-uniform liquid feeding, low liquid discharge efficiency, easy oxidation and inconvenience in sewage discharge and liquid discharge of the existing phosphorus sludge filtering device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of chemical technology, and relates to a mud phosphorus filtering device. BACKGROUND

[0002] Phosphorus is an extremely important element in the chemical industry, and has a wide range of applications in many industrial processes. Mud phosphorus is a byproduct produced during the production of yellow phosphorus, and its main components include not only yellow phosphorus, but also a large amount of impurities such as sand, carbon powder and other minerals. The presence of mud phosphorus not only occupies a large amount of storage space, but also poses a serious threat to the environment and safety due to the flammable and toxic nature of the yellow phosphorus in it if not properly handled. Therefore, effective treatment of mud phosphorus is a crucial link in the phosphorus chemical industry.

[0003] In the traditional mud phosphorus treatment process, the filtration of mud phosphorus has always been a problem. Due to the special nature of mud phosphorus, its viscosity is large and its composition is complex, so conventional filtration equipment cannot achieve efficient solid-liquid separation. For example, ordinary screen filters are prone to clogging when processing mud phosphorus, resulting in a sharp decline in filtration efficiency, which requires frequent cleaning and maintenance, not only increasing labor costs, but also causing production interruptions and seriously affecting production efficiency. In addition, the yellow phosphorus in mud phosphorus is easily oxidized by air during the filtration process, generating heat and harmful gases, further increasing the risk and complexity of the treatment process. At the same time, the traditional filtration device cannot accurately control the filtration precision, and cannot meet the requirements of different production processes for the purity of mud phosphorus, resulting in poor recovery and utilization of yellow phosphorus in mud phosphorus and waste of resources.

[0004] Currently, there are mainly the following solutions to the problem of mud phosphorus filtration:

[0005] Centrifugal filtration method: through the centrifugal force generated by high-speed rotation, the liquid and solid particles in mud phosphorus are separated. It uses centrifugal force field to intensify the solid-liquid separation process. The advantage of this method is that it can improve the filtration speed to a certain extent, reduce the filtration time, and can be continuously operated, suitable for large-scale mud phosphorus treatment. However, its disadvantages are also obvious, the structure of centrifugal equipment is complex, the cost is high, the installation and maintenance requirements of the equipment are high, and in the centrifugal process, due to the high-speed friction between mud phosphorus and the internal parts of the equipment, static electricity is easily generated, increasing the risk of spontaneous combustion of yellow phosphorus.

[0006] Heating filtration method: the melting point of yellow phosphorus in mud phosphorus is reduced by heating, and the fluidity is enhanced, so that filtration is facilitated. After heating the mud phosphorus in a certain temperature range and then performing the filtration operation, the advantages of this method are that the viscosity of the mud phosphorus can be reduced, the plugging phenomenon can be reduced, and the filtration efficiency can be improved. Meanwhile, the heating process helps to remove part of the moisture in the mud phosphorus. However, this method consumes a large amount of heat energy, increases the energy cost, and requires strict temperature control during the heating process, otherwise it is easy to cause excessive evaporation or combustion of yellow phosphorus, which is difficult to operate.

[0007] Multi-stage filtration method: a plurality of filters with different precision are connected in series or parallel to gradually realize fine filtration of mud phosphorus. The advantage is that the filtration precision can be flexibly adjusted according to production needs, the filtration quality of mud phosphorus can be improved, and different particle sizes of impurities can be removed. However, the multi-stage filtration system occupies a large area, the equipment investment is high, and the connection and flow control between the filters are complex, which can easily cause pressure imbalance and affect the overall filtration effect.

[0008] Considering the efficiency, cost, safety and filtration quality in the production process, the utility model intends to adopt a new mud phosphorus filtration device combining optimized structure design and special material application, aiming to overcome the shortcomings of the above-mentioned traditional methods, realize efficient, safe and accurate filtration of mud phosphorus, and improve the overall efficiency of mud phosphorus treatment. SUMMARY

[0009] The present application provides a kind of mud phosphorus filtration device, to solve the problem of uneven liquid inlet, low drainage efficiency, easy oxidation and inconvenient drainage of existing mud phosphorus filtration device.

[0010] In order to solve the above problems, the technical scheme adopted by the application is:

[0011] A mud phosphorus filtration device, characterized in that it comprises a tank body, a filter device is arranged inside the tank body, the filter device is arranged in a ring shape inside the tank body, and a liquid inlet is arranged at the middle position of the tank body; one side of the filter device is provided with a drainage pipe in communication with the filter device, and the other end extends to the outside of the tank body; a plurality of drainage openings are arranged at one end of the drainage pipe; a sealing cover is arranged at the upper end of the tank body and is sealingly connected with the tank body; nitrogen gas inlets are arranged on the sealing cover and the tank body and are in communication with the tank body; a sewage outlet and a drainage outlet are arranged at the bottom of the tank body, and the sewage outlet and the drainage outlet are both provided with electromagnetic valves.

[0012] The principle of the scheme is that the sludge phosphorus enters from the liquid inlet at the middle position of the tank body, and the annular filter device is arranged in the tank body, so that the sludge phosphorus can uniformly contact the filter device, thereby realizing filtration. The filtered liquid is discharged through the liquid discharge pipe in communication with the filter device. The plurality of liquid discharge openings arranged at one end of the liquid discharge pipe increase the liquid discharge channel and improve the liquid discharge speed and efficiency. The sealing cover at the upper end of the tank body is sealingly connected with the tank body, effectively preventing external air from entering the tank. The sealing cover and the nitrogen gas inlet arranged on the tank body introduce nitrogen gas into the tank body, forming an inert protective atmosphere, avoiding the oxidation reaction of sludge phosphorus with oxygen in the air. The pollution discharge port arranged at the bottom of the tank body is used to discharge the impurities deposited during the filtration process, and the liquid discharge port is used to discharge the filtered liquid, so that the pollution discharge and liquid discharge can be carried out separately and do not interfere with each other, ensuring the continuous and stable operation of the filter device.

[0013] The beneficial effects of the scheme are as follows:

[0014] The annular filter device in combination with the liquid inlet at the middle position ensures that the sludge phosphorus can be uniformly distributed to each part of the filter device, realizing efficient and comprehensive filtration, improving the filtration effect and quality. The plurality of liquid discharge openings arranged at one end of the liquid discharge pipe increase the liquid discharge flow and speed, shorten the filtration period, and improve the production efficiency. The good sealing cooperation of the sealing cover with the tank body and the arrangement of the nitrogen gas inlet effectively prevent the contact of sludge phosphorus with oxygen, avoid the occurrence of oxidation reaction, ensure the stability of the chemical properties of sludge phosphorus, improve the purity and quality of the product, and the separate pollution discharge port and liquid discharge port arranged at the bottom of the tank body enable the impurities and filtrate to be discharged separately and orderly, facilitating operation and management, reducing problems caused by mutual interference of pollution discharge and liquid discharge, and ensuring the continuity and stability of the filtration process.

[0015] Further, the outer side wall of the tank body is provided with a jacket, which is a hollow structure. The jacket is provided with a steam inlet and a steam outlet. The steam inlet is arranged at the upper position of the tank body, and the steam outlet is arranged at the lower end position of the tank body. The hollow structure of the jacket and the introduction of steam can provide a stable temperature environment for the filtration process of sludge phosphorus in the tank body. Through the heat transfer of steam, the temperature in the tank can be controlled within a suitable range, which helps to optimize the filtration performance of sludge phosphorus and improve the filtration efficiency. Furthermore, the steam inlet is arranged at the upper part of the tank body, and the steam outlet is arranged at the lower end of the tank body, so that the steam can fully flow through the inside of the jacket, prolonging the heat exchange path and improving the heat utilization efficiency, ensuring the uniformity of the heating of the tank body. At the same time, the steam flows from top to bottom, which can fully release heat before being discharged, reducing energy waste and production cost.

[0016] Further, the filtering device comprises a solid-liquid filter element and a storage tank, the solid-liquid filter element is annularly arranged on the storage tank and is in communication with the storage tank, the storage tank is fixedly arranged on the side wall of the tank body and is in a gap with the side wall, the solid-liquid filter element is annularly arranged on the storage tank, which increases the filtering area, improves the filtering efficiency and processing capacity, and the storage tank is fixedly arranged on the side wall of the tank body and is in a gap with the side wall, which on the one hand provides convenience for installation and maintenance and facilitates maintenance and replacement of components by the operator; and on the other hand, the gap helps heat dissipation, avoiding the influence of heat accumulation in the filtering process on the filtering effect and the service life of the equipment.

[0017] Further, a concentration sensor is arranged at the position of the liquid outlet, the concentration sensor is a phosphorus concentration sensor, and the concentration sensor is electrically connected with the blowdown outlet and the liquid outlet; by arranging the phosphorus concentration sensor at the liquid outlet, the concentration of phosphorus in the discharged liquid can be monitored in real time, which enables the operator to timely understand the filtering effect and judge whether the filtering meets the expected standard; meanwhile, automatic control can be realized, and when the detected phosphorus concentration is too high, the blowdown outlet can be automatically controlled to increase the blowdown amount or the flow of the liquid outlet can be adjusted to ensure the quality of the discharged liquid.

[0018] Further, a stirring rod is arranged inside the tank body, the stirring rod is provided with a stirring blade at one end close to the bottom of the tank body, the stirring blade is fixedly connected with the stirring rod, and the other end of the stirring rod penetrates the sealing cover and is fixedly connected with the output shaft of the motor arranged on the sealing cover; the arrangement of the stirring rod and the stirring blade can keep the sludge phosphorus in the tank body dynamically mixed during the filtering process, avoiding the sludge phosphorus from being deposited and accumulated, thereby ensuring the uniformity of the filtering, and the arrangement of the stirring blade close to the bottom of the tank body can effectively stir the sludge phosphorus deposited on the bottom, preventing the bottom from being blocked.

[0019] Further, a clean water inlet is arranged on the sealing cover and is in communication with the tank body; if the filtering device is blocked or the filtering effect is poor during the filtering process, a proper amount of clean water can be injected through the clean water inlet for flushing and dredging, which helps to restore the normal operation of the filtering device and improve the filtering efficiency.

[0020] Further, a plurality of lifting lugs are arranged around the tank body, the lifting lugs are arranged at the middle position of the tank body and are welded with the tank body; the arrangement of the lifting lugs at the middle position of the tank body can better utilize the center of gravity of the tank body, making the hoisting more stable.

[0021] Further, the solid-liquid filter element comprises a steel wire mesh, a filtering layer and a porous ceramic filter mesh, and the pore diameters of the steel wire mesh, the filtering layer and the porous ceramic filter mesh are arranged in a gradient decreasing manner; the design of the gradient decreasing pore diameters can realize graded filtering; the steel wire mesh with larger pore diameters can first intercept larger particles of impurities, playing a role of preliminary filtering and reducing the filtering burden of the subsequent filtering layer and the porous ceramic filter mesh.

[0022] Furthermore, the gaps between the wire mesh, filter layers, and porous ceramic filter screen provide storage space for impurities intercepted during the filtration process, preventing them from quickly clogging the filter screen, extending the service life of the filter element, and reducing the need for frequent replacement or cleaning of the filter element. The gaps also facilitate the flow and distribution of liquid during the filtration process, allowing the liquid to pass through each filter layer more evenly, thereby improving the efficiency and effectiveness of filtration. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a top view of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of this utility model;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure of I. Detailed Implementation

[0027] The reference numerals in the accompanying drawings include: tank body 1, filter element 2, feed inlet 3, liquid outlet 4, storage tank 5, steam inlet 6, steam outlet 7, nitrogen inlet 8, drain outlet 9, liquid outlet 10, auxiliary drain outlet 11, jacket 12, concentration sensor 13, motor 14, stirring blade 15, lifting lug 16, sealing cover 17, stirring rod 18, filtration device 19, wire mesh 20, filter holes 21, filter layer 22, porous ceramic filter screen 23.

[0028] The basic implementation examples are as follows: Figures 1-4 As shown, a mud-phosphorus filtration device 19 includes a tank 1, with a filter device 19 arranged in a ring inside the tank 1. An inlet is provided at the middle of the tank 1, through which mud-phosphorus enters the tank 1. Due to the ring distribution of the filter device 19, it can ensure that the mud-phosphorus is in uniform contact with the filter device 19, thereby achieving comprehensive and efficient filtration and improving the filtration effect and quality.

[0029] A drain pipe is provided on one side of the filter device 19 and is connected to the filter device 19. The other end of the drain pipe extends to the outside of the tank body 1. Multiple drain ports 10 are provided at one end to increase the drain channel, improve the flow rate and speed of the drain, shorten the filtration cycle, and significantly improve production efficiency.

[0030] A sealing cover 17 is sealingly connected to the upper end of the tank body 1. Nitrogen gas inlets 8 are provided on the sealing cover 17 and the tank body 1 and communicate with the tank body 1. The sealing connection between the tank body 1 and the sealing cover 17 effectively prevents external air from entering. The introduction of nitrogen gas forms an inert protective atmosphere, avoiding the contact between the mud phosphorus and oxygen, and ensuring the stability of the chemical properties of the mud phosphorus.

[0031] The bottom of the tank body 1 is provided with a sewage outlet 9 and a liquid outlet 10, both of which are provided with electromagnetic valves, so that the impurities and filtrate can be discharged separately and orderly, facilitating operation and management, and ensuring the continuity and stability of the filtration process.

[0032] The outer side wall of the tank body 1 is provided with a jacket 12, which is a hollow structure. The jacket 12 is provided with a steam inlet 6 and a steam outlet 7. The steam inlet 6 is located at the upper part of the tank body 1, and the steam outlet 7 is located at the lower end of the tank body 1. The introduction of steam provides a stable and suitable temperature environment for the filtration process of the mud phosphorus in the tank body 1, optimizing the filtration performance of the mud phosphorus. The design of the steam flow path prolongs the heat exchange path, improves the heat utilization efficiency, ensures uniform heating of the tank body 1, and reduces energy waste and production costs.

[0033] The filtration device 19 includes a solid-liquid filter core 2 and a storage tank 5. The solid-liquid filter core 2 is annularly arranged on the storage tank 5 and communicates with the storage tank 5. The storage tank 5 is fixed to the side wall of the tank body 1 and has a gap between the storage tank 5 and the side wall. The annular distribution of the solid-liquid filter core 2 increases the filtration area, improves the filtration efficiency and processing capacity, and provides convenience for installation and maintenance. It is convenient for maintenance and replacement of parts, and is also conducive to heat dissipation, avoiding the accumulation of heat affecting the filtration effect and equipment life.

[0034] A concentration sensor 13 is provided at the position of the liquid outlet 10. The concentration sensor 13 is a phosphorus concentration sensor 13 and is electrically connected with the sewage outlet 9 and the liquid outlet 10. The concentration sensor 13 can monitor the concentration of phosphorus in the discharged liquid in real time, so that the operator can timely understand the filtration effect and judge whether the expected standard is reached. The concentration sensor 13 can also realize automatic control. According to the concentration, the sewage discharge amount and the flow of the liquid outlet 10 can be automatically adjusted to ensure the quality of the discharged liquid.

[0035] The inside of the tank body 1 is provided with a stirring rod 18. One end of the stirring rod 18 close to the bottom of the tank body 1 is provided with a stirring blade 15 and is fixedly connected with the stirring blade 15. The other end of the stirring rod 18 penetrates the sealing cover 17 and is fixedly connected with the output shaft of the motor 14 provided on the sealing cover 17. The stirring rod 18 and the stirring blade 15 make the mud phosphorus in the tank body 1 keep dynamic mixing during the filtration process, avoiding sedimentation and accumulation, and ensuring uniform filtration. The stirring blade 15 close to the bottom can effectively stir the deposited mud phosphorus, preventing the bottom from being blocked.

[0036] The sealing cover 17 is provided with a clean water port which is communicated with the tank body 1. When the filtering device 19 is blocked or the filtering effect is poor, clean water can be injected through the clean water port to flush and dredge, which helps to restore normal operation and improve the filtering efficiency.

[0037] The tank body 1 is provided with a plurality of lifting lugs 16 at the middle position of the periphery and is welded with the tank body 1, so that the center of gravity of the tank body 1 is better utilized, the hoisting is more stable, and the transportation and installation of the tank body 1 are facilitated.

[0038] The solid-liquid filter element 2 comprises a steel wire mesh 20, a filtering layer 22 and a porous ceramic filtering mesh 23, and the pore diameters of the three are gradiently reduced. The steel wire mesh 20 with a larger pore diameter first intercepts large-particle impurities to perform preliminary filtering and reduce the burden of the subsequent filtering layer 22 and the porous ceramic filtering mesh 23.

[0039] The steel wire mesh 20, the filtering layer 22 and the porous ceramic filtering mesh 23 are provided with gaps, which provide storage space for impurities, prolong the service life of the filter element 2, reduce the cleaning and replacement requirements, and also help the liquid flow and uniform distribution, improve the filtering efficiency and effect.

[0040] In actual use, first, connect the nitrogen gas source, the steam supply source and the pipelines of the liquid discharge port 10 and the sewage discharge port 9, inject the mud phosphorus wastewater into the tank body 1 through the liquid inlet, open the nitrogen gas inlet 8 to introduce nitrogen gas, at the same time, introduce steam into the steam inlet 6 of the jacket 12 to keep the temperature in the tank constant, start the motor 14 to make the stirring rod 18 rotate, in the filtering process, the concentration sensor 13 monitors the phosphorus concentration of the liquid discharge port 10, and when the concentration is lower than the set standard value, the liquid discharge port 10 and the sewage discharge port 9 are normally discharged, after the filtering is completed, clean water is injected through the clean water port to flush the device, ready for next use.

[0041] The above is only an embodiment of the present application, and the common knowledge of specific structures and characteristics in the scheme is not described in detail, the ordinary skilled in the art knows all the ordinary technical knowledge in the field of the present application before the application date or the priority date, can know all the prior art in the field and has the ability to apply the conventional experimental means before the date, the ordinary skilled in the art can improve and implement the present scheme under the inspiration given by the present application combined with their own ability, some typical known structures or known methods should not be an obstacle for the ordinary skilled in the art to implement the present application. It should be pointed out that, for the skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be regarded as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the description can be used to explain the content of the claims.

Claims

1. A device for filtering sludge phosphorus, characterized by, The application relates to a filter device for a liquid tank, which comprises a tank body, a filter device arranged in the tank body, a liquid inlet arranged at the middle of the tank body, a liquid outlet arranged at one side of the filter device and extending to the outside of the tank body, a plurality of liquid discharge ports arranged at one end of the liquid outlet, a sealing cover arranged at the upper end of the tank body and connected with the tank body in a sealing mode, a nitrogen inlet arranged on the sealing cover and the tank body and communicated with the tank body, a sewage outlet and a liquid outlet arranged at the bottom of the tank body, and a jacket arranged on the outer wall of the tank body.

2. A device for filtering sludge phosphorus according to claim 1, characterized in that The jacket is a hollow structure, steam inlets and steam outlets are arranged on the jacket, the steam inlets are arranged at the upper end of the tank body, and the steam outlets are arranged at the lower end of the tank body.

3. A device for filtering sludge phosphorus according to claim 1, characterized in that, The filter device comprises a solid-liquid filter core and a storage tank, the solid-liquid filter core is arranged in the storage tank in a ring mode and communicated with the storage tank, and the storage tank is fixedly arranged on the side wall of the tank body and arranged in a gap mode with the side wall.

4. The device of claim 1, wherein, A concentration sensor is arranged at the liquid outlet, the concentration sensor is a phosphorus concentration sensor, and the concentration sensor is electrically connected with the sewage outlet and the liquid outlet.

5. The device of claim 1, wherein, A stirring rod is arranged in the tank body, stirring blades are arranged on one end of the stirring rod close to the bottom of the tank body and fixedly connected with the stirring rod, and the other end of the stirring rod penetrates through the sealing cover and is fixedly connected with the output shaft of a motor arranged on the sealing cover.

6. A device for filtering sludge phosphorus according to claim 1, characterized in that, A clean water inlet is arranged on the sealing cover and communicated with the tank body.

7. The device of claim 1, wherein, A plurality of lifting lugs are arranged around the tank body, the lifting lugs are arranged at the middle of the tank body and welded with the tank body.

8. A device for filtering sludge phosphorus according to claim 3, characterized in that, The solid-liquid filter core comprises a steel wire mesh, a filter layer and a porous ceramic filter screen, and the pore diameters of the steel wire mesh, the filter layer and the porous ceramic filter screen are arranged in a gradient decreasing mode.

9. A device for filtering sludge phosphorus according to claim 8, characterized in that The steel wire mesh, the filter layer and the porous ceramic filter screen are arranged in a gap mode.

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