Slurry distillation system

Abstract

The invention relates to the field of slurry distillation, in particular to a slurry distillation system which is internally provided with a heating assembly, a deslagging assembly, a phosphorus collecting assembly and a waste gas treatment assembly. A plurality of layers of fixing plates are arranged in the slurry distillation machine, and slurry enters from the top of the slurry distillation machine, sequentially penetrates through the fixing plates and then falls into the deslagging assembly; the phosphorus collecting assembly comprises a plurality of phosphorus collecting pipes arranged below the fixing plate, and the phosphorus collecting pipes all extend out of the slurry distillation machine, sequentially pass through a condensation pipe and a phosphorus collecting header pipe and are communicated with a phosphorus collecting pool. According to the system disclosed by the invention, the slurry distillation machine with multiple layers of fixing plates and an elastic stirring scraper is arranged and is matched with heat exchange for continuous heating, so that phosphorus-containing gas in slurry is separated out and is collected through the phosphorus collecting assembly, and waste gas treatment can be realized through the waste gas treatment assembly; the efficient distillation pretreatment on the slurry material can be realized.

Description

Technical Field

[0001] This invention relates to the field of mud distillation technology, and more particularly to mud distillation systems. Background Technology

[0002] Elemental phosphorus is an important basic chemical raw material, traditionally produced mainly by the electric furnace process. This method uses phosphate rock, silica, and coke as raw materials, and carries out a carbothermic reduction reaction in a closed submerged arc furnace at a high temperature above 1400℃, causing phosphorus to escape in the form of vapor, which is then collected by condensation. This process is mature and is the mainstream technology for large-scale production of yellow phosphorus.

[0003] However, the electric furnace method requires the raw materials to be lumpy or shaped mineral mixtures. For slurry materials with high water content and viscous texture, they cannot be directly fed into the furnace, resulting in high pretreatment costs and huge energy consumption. Therefore, there is an urgent need for a slurry distillation system that facilitates the release of phosphorus-containing gases. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mud distillation system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A mud distillation system, including a mud distillation machine, wherein the mud distillation machine is equipped with a heating component, a slag discharge component, a phosphorus collection component, and a waste gas treatment component; The mud distillation machine is equipped with multiple layers of fixing plates. The mud enters from the top of the mud distillation machine and passes through the fixing plates in sequence before falling into the slag discharge assembly. The phosphorus collection assembly includes multiple phosphorus collection pipes located below the fixed plate. The phosphorus collection pipes all extend from the mud distillation machine and pass through the condenser pipe and the main phosphorus collection pipe in sequence, and are connected to the phosphorus collection tank. The heating assembly includes multiple heat exchange plates disposed below the fixed plate. Each heat exchange plate has a heat exchange channel for circulating hot air and for exchanging heat with the material. The waste gas treatment assembly includes a waste heat exchanger, an induced draft fan, and a water film dust collector connected in sequence, and the waste heat exchanger is connected to the hot air outlet of the heat exchange plate.

[0006] In addition, a preferred structure is that a main shaft is rotatably installed inside the mud distillation machine, and an elastic stirring scraper is installed on the main shaft above each fixed plate, and multiple vertical feeding channels for the flow of mud are opened through each fixed plate.

[0007] In addition, a preferred structure is that a hot air chamber is provided below the mud distillation machine, a hot air supply port is provided on one side of the hot air chamber, and air supply chambers communicating with the hot air chamber are provided vertically on both sides of the mud distillation machine.

[0008] In addition, a preferred structure is that the heat exchange plate has a labyrinth-shaped heat exchange channel inside, the air inlet of the heat exchange channel is connected to the air supply chamber, and the air outlet of the heat exchange channel is connected to the waste heat exchanger.

[0009] Furthermore, a preferred structure is that an anti-clogging screw is rotatably installed inside the phosphorus collection tube to prevent clogging.

[0010] In addition, the preferred structure is that the heat exchange plate and the phosphorus collection tube at the bottom of the fixed plate are arranged alternately, and condenser tubes are provided on both sides of the mud distillation machine. Condensed water is sprayed inside the condenser tubes, and the condenser tubes and the phosphorus collection tubes are adapted to be connected.

[0011] In addition, the preferred structure is that the phosphorus collection main pipe is connected to multiple phosphorus collection tanks, including a first phosphorus collection tank, a second phosphorus collection tank and a third phosphorus collection tank. The first phosphorus collection tank is provided with an inspection port, and each phosphorus collection tank is provided with an exhaust gas discharge pipe and an air replenishment port.

[0012] Furthermore, in a preferred configuration, the slag discharge assembly includes a slag discharge auger located at the bottom of the mud distillation machine. The discharge end of the slag discharge auger is connected to the slag discharge chamber through a material sealing gap. A connecting slag discharge channel is provided at the bottom of the slag discharge chamber. A sealing plate is movably installed inside the slag discharge chamber. A guide rod for guiding is provided on the back of the sealing plate. The sealing plate is pressed against the material sealing gap by the preload of a spring to achieve a seal.

[0013] Furthermore, a preferred configuration is that the top of the mud distillation machine is provided with a feed inlet and a pressure relief valve.

[0014] The beneficial effects of this invention are as follows: by setting up a mud distillation machine with multiple fixed plates and elastic stirring scrapers, and cooperating with heat exchange for continuous heating, phosphorus-containing gases in the mud are precipitated and collected by a phosphorus collection component. The waste gas can be treated by a waste gas treatment component. With the setting of this system, efficient distillation pretreatment of mud materials can be achieved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the mud distillation system proposed in this invention; Figure 2 This is a schematic diagram of the structure of the mud distillation machine, slag discharge auger, hot air chamber, and phosphorus collection main pipe proposed in this invention; Figure 3 for Figure 2 Magnified detailed view of the interior of the mud distillation machine in China; Figure 4 This is a schematic diagram of the internal structure of the heat exchange plate proposed in this invention; Figure 5 This is a schematic diagram of the slag discharge auger proposed in this invention; Figure 6 for Figure 5 A schematic diagram of the structure after the sealing plate is pushed out.

[0016] In the diagram: 1. Slurry distillation machine, 11. Main shaft, 111. Elastic stirring scraper, 12. Fixed plate, 121. Discharge channel, 13. Feed inlet, 14. Pressure relief valve, 2. Slag discharge auger, 20. Material sealing gap, 21. Slag discharge bin, 211. Slag discharge channel, 22. Sealing plate, 221. Guide rod, 222. Spring, 3. Hot air chamber, 31. Hot air supply port, 32. Air supply cavity, 33. Heat exchange plate, 330. Heat exchange channel, 331. Air inlet, 332. Air outlet, 4. Phosphorus collection main pipe, 41. First phosphorus collection tank, 411. Inspection port, 42. Second phosphorus collection tank, 43. Third phosphorus collection tank, 44. Waste gas discharge pipe, 45. Air replenishment port, 46. Condenser pipe, 47. Phosphorus collection pipe, 471. Anti-clogging screw, 5. Waste heat exchanger, 6. Exhaust fan, 7. Water film dust collector. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] See Figure 1 The mud distillation system includes a mud distillation machine 1, which is equipped with a slag discharge assembly, a heating assembly, a phosphorus collection assembly, and a waste gas treatment assembly.

[0019] The exhaust gas treatment assembly includes a waste heat exchanger 5, an induced draft fan 6, and a water film dust collector 7. The hot air discharged from the air outlet 332 can pass through the waste heat exchanger 5, the induced draft fan 6, and the water film dust collector 7 in sequence to achieve heat exchange treatment of the exhaust gas.

[0020] The phosphorus collection main pipe 4 is connected to the phosphorus collection tank, which includes a first phosphorus collection tank 41, a second phosphorus collection tank 42, and a third phosphorus collection tank 43. This allows the phosphorus-containing gas collected in the phosphorus collection main pipe 4 to be discharged into the phosphorus collection tank for collection.

[0021] The first phosphorus collection tank 41 is equipped with an inspection port 411 to facilitate user maintenance in the future. The first phosphorus collection tank 41, the second phosphorus collection tank 42 and the third phosphorus collection tank 43 are all equipped with exhaust gas discharge pipes 44 and air replenishment ports 45.

[0022] See Figure 2-4 The mud distillation machine 1 has multiple circular fixed plates 12 fixedly installed inside. Multiple feeding channels 121 are vertically opened inside the fixed plates 12, and the mud passes through the fixed plates 12 through the feeding channels 121.

[0023] A heat exchange plate 33 is fixedly installed on one side of the bottom of the fixed plate 12 inside the mud distillation machine 1, which heats the mud. A phosphorus collection pipe 47 is fixedly installed on the other side of the bottom of the fixed plate 12 inside the mud distillation machine 1, which collects phosphorus-containing gases precipitated from the mud. The heat exchange plates 33 and phosphorus collection pipes 47 at the bottom of each layer of fixed plate 12 are arranged alternately.

[0024] The mud distillation machine 1 is equipped with a rotating main shaft 11, which is driven to rotate by a motor at the top of the machine. The main shaft 11 passes through the center of the fixed plate 12, and elastic stirring scrapers 111 are installed on the main shaft 11 above the fixed plate 12. By rotating the elastic stirring scrapers 111 driven by the main shaft 11, the mud remaining on the fixed plate 12, the heat exchange plate 33, and the phosphorus collection pipe 47 can be scraped off, allowing the mud to pass through the feed channel 121.

[0025] The mud distillation machine 1 has a hot air chamber 3 installed at its bottom, and a hot air supply port 31 is connected to one side of the hot air chamber 3. Vertical air supply chambers 32 are connected to both sides of the mud distillation machine 1 above the hot air chamber 3, and the air supply chambers 32 are connected to the air inlets 331 on the heat exchange plate 33.

[0026] The heat exchange plate 33 is provided with a heat exchange channel 330. Hot air in the air supply chamber 32 enters from the air inlet 331, then flows in the heat exchange channel 330, and finally flows out from the air outlet 332 and enters the waste heat exchanger 5 to achieve waste gas treatment.

[0027] The heat exchange plate 33 extends into the mud still 1, and a seal is provided at the insertion point of the heat exchange plate 33 to ensure the airtightness of the mud still 1. The heat exchange channel 330 is not connected to the mud still 1. Hot air flows within the heat exchange channel 330 to heat the heat exchange plate 33, thereby heating the mud. Furthermore, the labyrinth-shaped heat exchange channel 330 increases the residence time of the hot air within the heat exchange plate 33, thus improving heat exchange efficiency.

[0028] The phosphorus collection tubes 47 extend from the mud distillation machine 1. An anti-clogging screw 471 driven by a motor is rotatably installed inside the phosphorus collection tube 47. By rotating the anti-clogging screw 471, the mud that accidentally enters the phosphorus collection tube 47 can be pushed out to prevent the mud from clogging the phosphorus collection tube 47.

[0029] Both sides of the mud distillation machine 1 are vertically equipped with condenser tubes 46, and the extended phosphorus collection tubes 47 are connected to the condenser tubes 46. Cooling water is sprayed downwards from the top of the condenser tubes 46. When phosphorus-containing gas in the phosphorus collection tubes 47 enters the condenser tubes 46, it comes into contact with the cooling water. At this point, the phosphorus-containing gas rapidly condenses into tiny liquid phosphorus beads upon contact with the cold water and settles. Finally, the liquid phosphorus beads enter the main phosphorus collection pipe 4 and flow into the phosphorus collection tank.

[0030] The mud distillation machine 1 is equipped with a feed inlet 13 at the top, which allows for the input of mud. Furthermore, the top of the mud distillation machine 1 is equipped with a pressure relief valve 14 to ensure the safety of the pressure inside the machine.

[0031] See Figure 4-5 The bottom of the mud distillation machine 1 is equipped with a slag discharge auger 2, which contains a screw driven by a motor to transport the mud slag.

[0032] The discharge end of the slag discharge auger 2 is connected to a slag discharge bin 21. A material sealing gap 20 is provided between the slag discharge bin 21 and the slag discharge auger 2, and a slag discharge channel 211 is provided at the bottom of the slag discharge bin 21.

[0033] A sealing plate 22 is movably installed inside the slag discharge bin 21 facing the material sealing gap. A guide rod 221 is provided behind the sealing plate 22 for guidance, and a spring 222 is installed behind the sealing plate 22 on the outside of the guide rod 221. The elastic force provided by the spring 222 can push the sealing plate 22 towards the material sealing gap 20 to seal the material sealing gap 20.

[0034] After the sludge discharged from the mud distillation machine 1 enters the sludge discharge auger 2, it is continuously moved towards the sealing plate 22 by the push of the screw. Then, the sludge can push the sealing plate 22 outward, at which time the spring 222 is compressed, and the sludge can enter the sludge discharge chamber 21, and then be discharged through the sludge discharge channel 211.

[0035] When no more sludge is discharged, the sludge at the end of the slag discharge auger 2 is no longer pushed towards the sealing plate 22. At this time, the sealing plate 22 can automatically reset due to the elastic force of the spring 222, thus re-sealing the slag discharge auger 2. Furthermore, the remaining sludge inside the slag discharge auger 2 is sealed at the material sealing gap 20, achieving material sealing and further improving the sealing performance inside the slag discharge auger 22.

[0036] In this embodiment, the slurry enters from the top of the slurry distillation machine 1 through the feed inlet 13, and then, with the push of the elastic stirring scraper 111, the slurry in the slurry distillation machine 1 can continuously fall from the discharge channel 121 on the fixed plate 12.

[0037] When the slurry falls to the bottom of the slurry distillation machine 1, it automatically enters the slag discharge auger 2 by gravity and moves towards the sealing plate 22 by the screw. The slag pushes the sealing plate 22 outward, at which point the spring 222 is compressed, and the slag enters the slag discharge chamber 21, and is then discharged through the slag discharge channel 211.

[0038] When no more sludge is discharged, the sludge at the end of the slag discharge auger 2 is no longer pushed towards the sealing plate 22. At this time, the sealing plate 22 can automatically reset due to the elastic force of the spring 222, thus re-sealing the slag discharge auger 2. Furthermore, the remaining sludge inside the slag discharge auger 2 is sealed at the material sealing gap 20, achieving material sealing and further improving the sealing performance inside the slag discharge auger 22.

[0039] Furthermore, as the mud continuously falls onto the multi-layer fixed plate 12, it continuously comes into contact with the heat exchange plate 33, thereby heating the mud and releasing the phosphorus-containing gas from the mud.

[0040] After the phosphorus-containing gas is released, it can enter the condenser 46 through the phosphorus collection pipe 47, and condensate water is continuously sprayed downwards from the top of the condenser 46. After the phosphorus-containing gas enters and comes into contact with the condensate water, it quickly condenses into tiny liquid phosphorus beads and settles. Finally, the liquid phosphorus beads enter the phosphorus collection main pipe 4 and flow into the phosphorus collection tank, thereby realizing the collection of phosphorus-containing gas.

[0041] Furthermore, a hot air chamber 3 is installed at the bottom of the mud distillation machine 1, and a hot air supply port 31 is connected to one side of the hot air chamber 3. The hot air in the hot air chamber 3 is diverted to the air supply chamber 32, and then the hot air in the air supply chamber 32 enters from the air inlet 331, flows in the heat exchange channel 330, and finally flows out from the air outlet 332 and enters the waste heat exchanger 5, the induced draft fan 6, and the water film dust collector 7 in sequence to achieve waste gas treatment. By controlling the flow of hot air in the heat exchange channel 330, the heat exchange plate 33 can be heated, and thus the mud can be heated through the heat exchange plate 33.

[0042] In this invention, a mud distillation machine 1 with multiple fixed plates 12 and elastic stirring scraper 111 is set up and continuously heated with heat exchange plate 33 to precipitate phosphorus-containing gas in the mud and collect it through phosphorus collection component. The waste gas can be treated through waste gas treatment component. With the setting of this system, efficient distillation pretreatment of mud material can be achieved.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A mud distillation system, comprising a mud distillation machine (1), characterized in that, The mud distillation machine (1) is equipped with a heating component, a slag discharge component, a phosphorus collection component and a waste gas treatment component; The mud distillation machine (1) is equipped with multiple layers of fixing plates (12). The mud enters from the top of the mud distillation machine (1) and passes through the fixing plates (12) in sequence before falling into the slag discharge assembly. The phosphorus collection assembly includes multiple phosphorus collection pipes (47) located below the fixed plate (12). The phosphorus collection pipes (47) extend from the mud distillation machine (1) and pass through the condenser pipe (46) and the phosphorus collection main pipe (4) in sequence, and are connected to the phosphorus collection tank. The heating assembly includes multiple heat exchange plates (33) arranged below the fixed plate (12). The heat exchange plates (33) are provided with heat exchange channels (330) for circulating hot air and exchange heat with the material. The exhaust gas treatment assembly includes a waste heat exchanger (5), an induced draft fan (6), and a water film dust collector (7) connected in sequence, and the waste heat exchanger (5) is connected to the hot air outlet of the heat exchange plate (33).

2. The mud distillation system according to claim 1, characterized in that, The mud distillation machine (1) is equipped with a rotating main shaft (11). An elastic stirring scraper (111) is installed on the main shaft (11) above each fixed plate (12). The fixed plate (12) is also provided with multiple vertically penetrating feeding channels (121) for the flow of mud.

3. The mud distillation system according to claim 1, characterized in that, A hot air chamber (3) is provided below the mud distillation machine (1). A hot air supply port (31) is provided on one side of the hot air chamber (3), and air supply chambers (32) that communicate with the hot air chamber (3) are provided vertically on both sides of the mud distillation machine (1).

4. The mud distillation system according to claim 3, characterized in that, The heat exchange plate (33) is provided with a labyrinth-shaped heat exchange channel (330) inside. The air inlet (331) of the heat exchange channel (330) is connected to the air supply cavity (32), and the air outlet (332) of the heat exchange channel (330) is connected to the waste heat exchanger (5).

5. The mud distillation system according to claim 1, characterized in that, The phosphorus collection tube (47) is rotatably equipped with an anti-blocking screw (471) for preventing blockage.

6. The mud distillation system according to claim 1, characterized in that, The heat exchange plate (33) and phosphorus collection pipe (47) at the bottom of the fixed plate (12) are arranged alternately. Condensing pipes (46) are provided on both sides of the mud distillation machine (1). Condensed water is sprayed inside the condensing pipes (46), and the condensing pipes (46) and phosphorus collection pipes (47) are adapted to be connected.

7. The mud distillation system according to claim 6, characterized in that, The phosphorus collection main pipe (4) is connected to multiple phosphorus collection tanks, including a first phosphorus collection tank (41), a second phosphorus collection tank (42) and a third phosphorus collection tank (43). The first phosphorus collection tank (41) is provided with an inspection port (411), and each phosphorus collection tank is provided with a waste gas discharge pipe (44) and a gas replenishment port (45).

8. The mud distillation system according to claim 1, characterized in that, The slag discharge assembly includes a slag discharge auger (2) located at the bottom of the mud distillation machine (1). The discharge end of the slag discharge auger (2) is connected to the slag discharge bin (21) through a material sealing gap (20). A slag discharge channel (221) is provided at the bottom of the slag discharge bin (21). A sealing plate (22) is movably installed inside the slag discharge bin (21). A guide rod (221) for guiding is provided on the back of the sealing plate (22). The sealing plate (22) is pressed against the material sealing gap (20) by the pre-tightening force of the spring (222) to achieve sealing.

9. The mud distillation system according to claim 1, characterized in that, The top of the mud distillation machine (1) is provided with a feed inlet (13) and a pressure relief valve (14).

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