A sleeve kiln for calcining yellow phosphorus ore from yellow phosphorus tail gas

Abstract

The application discloses a sleeve kiln for calcining yellow phosphorus ore by using yellow phosphorus tail gas and belongs to the technical field of heating and drying devices. The sleeve kiln for calcining yellow phosphorus ore by using yellow phosphorus tail gas comprises a sleeve kiln and a preheating bin. The application can concentrate and collect tail gas generated in the calcination of yellow phosphorus ore, absorb harmful gases in the tail gas, collect and ignite combustible gases in the tail gas, heat yellow phosphorus ore by the preheated gas, and then deliver the preheated yellow phosphorus ore to the sleeve kiln for calcination. The application fully utilizes the energy in the tail gas, saves energy, shortens the calcination time of the yellow phosphorus ore, and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to a sleeve kiln for calcining yellow phosphorus ore using tail gas from burning yellow phosphorus ore. Specifically, it relates to a sleeve kiln that utilizes the tail gas generated from burning yellow phosphorus ore to preheat and calcine the ore, belonging to the technical field of heating and drying devices. Background Technology

[0002] In my country's yellow phosphorus production, the main method used is the electric arc furnace method with a double-walled kiln to refine yellow phosphorus ore. During the production process, yellow phosphorus tail gas is generated. The production of 1 ton of yellow phosphorus produces approximately 2500-3000 Nm3 of yellow phosphorus tail gas as a byproduct. The tail gas contains 82-95% CO (vol) and has a calorific value of 10.7475-12.0119 MJ / m3, which is classified as a medium-calorific-value fuel. The composition of yellow phosphorus tail gas is complex. In addition to CO, it also contains corrosive gases such as 800-6000 mg / Nm3 of H2S, 3500-900 mg / Nm3 of pH, and 100-500 mg / Nm3 of HF.

[0003] Yellow phosphorus tail gas has a good calorific value and can be burned. In the early days, China mainly treated yellow phosphorus tail gas by lighting sky lamps, which not only caused environmental pollution but also wasted resources. As research progressed, some domestic companies used it as fuel for boilers. However, yellow phosphorus tail gas contains harmful and corrosive substances such as phosphorus, sulfur, and fluorine, which cause severe equipment corrosion and greatly shorten the equipment's lifespan.

[0004] When refining yellow phosphorus ore using the electric arc furnace method in a sleeve kiln, the ore is first crushed and screened before being transported into the sleeve kiln. Since the yellow phosphorus ore requires a long time to heat up in the sleeve kiln, and a large amount of water vapor is generated during calcination, the calcination effect is poor. Therefore, the best solution is to pre-dry and calcine the yellow phosphorus ore before it enters the sleeve kiln. However, existing drying methods suffer from uneven drying. To address this, those skilled in the art have invented a sleeve kiln for calcining yellow phosphorus ore using tail gas to solve the problems mentioned above. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sleeve kiln for calcining yellow phosphorus ore using yellow phosphorus tail gas, which removes toxic gases from the tail gas generated by calcining yellow phosphorus ore in the sleeve kiln by acid and alkali treatment, collects and ignites the combustion components, and then preheats and dries the screened yellow phosphorus ore. This saves energy and shortens the calcination time of yellow phosphorus ore in the sleeve kiln, thereby improving the production efficiency of yellow phosphorus ore in the sleeve kiln.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A sleeve kiln for calcining yellow phosphorus ore with yellow phosphorus tail gas includes a sleeve kiln and a preheating chamber. The preheating chamber is equipped with a circulation pipe. One end of the circulation pipe is connected to a feed pipe. A feed three-way valve is provided between the two. The other end of the feed pipe is connected to the feed port at the top of the sleeve kiln. The circulation pipe is equipped with circulation blades. The end of the circulation pipe is connected to a circulation motor. A first temperature sensor is also provided on the circulation pipe.

[0008] The preheating chamber is equipped with an upper rotary switch at the top and a lower rotary switch at the bottom. The preheating chamber is also equipped with a preheating hood, which is a funnel shape with openings at the top and bottom and has a mesh structure.

[0009] Furthermore, the inner part of the sleeve kiln is equipped with a calcination layer, which is connected to one end of an exhaust pipe. The other end of the exhaust pipe is connected to an air compressor. A condenser is provided between the two. The air compressor is connected to one end of a first pipe, and the other end of the first pipe is connected to the bottom of the reaction tank.

[0010] Furthermore, the bottom of the reaction vessel is provided with a calcium hydroxide solution, and a water-spinning device is provided in the middle of the reaction vessel. The water-spinning device includes spiral blades with a certain curvature, which are arranged in a disc shape. The spiral blades rotate in the direction of the center. A water-spinning motor is connected to the top of the water-spinning device.

[0011] Furthermore, calcium oxide is provided above the water-spinning device, and one end of the second pipe is connected to the upper part of the reaction tank, while the other end of the second pipe is connected to a gas storage tank.

[0012] The gas storage tank is equipped with a pressure sensor at its upper end, and a gas pipeline is also connected to the upper part of the gas storage tank. A gas PID valve is also installed on the gas pipeline.

[0013] Furthermore, the surface of the preheating hood is also connected to a heating pipe, which is connected to a gas pipe. An ignition structure is also provided inside the heating pipe. The heating pipe is also connected to an air intake pipe, which is equipped with an air PID valve. A second temperature sensor is also provided on the heating pipe.

[0014] Furthermore, the lower part of the preheating chamber is connected to a feeding pipe, which is equipped with feeding blades in a spiral shape. The end of the feeding pipe is connected to a feeding motor, and the upper part of the preheating chamber is connected to a feeding hopper, which is equipped with a feeding assembly.

[0015] Furthermore, the feeding assembly includes a screen cylinder, which is placed at an angle and has uniformly distributed screen holes on its surface. A baffle is also fixed to the inner surface of the screen cylinder, which extends through both ends of the screen cylinder and is in a spiral shape. Fixed blocks are fixed to the surfaces of both ends of the screen cylinder, and there is a groove in the middle of the fixed blocks. A drive roller is embedded in the groove. A drive connecting rod is provided on one side of the screen cylinder, and the drive roller is fixed to the drive connecting rod. A drive motor is connected to the end of the drive connecting rod. A vibrating roller is provided on the other side of the screen cylinder, opposite to the drive connecting rod.

[0016] Furthermore, a rubber hammer is connected to the surface of the vibrating roller by a thin rope, and a vibrating gear is fixedly connected to the middle surface of the vibrating roller. The vibrating gear meshes with a screening gear through its teeth, and the screening gear is fixedly connected to the middle surface of the screening cylinder.

[0017] Furthermore, the upper outlet of the preheating chamber is connected to one end of an exhaust duct, and the other end of the exhaust duct is connected to the inlet of a steam-water separator. An exhaust fan and a third temperature sensor are installed inside the exhaust duct. The outlet of the steam-water separator is connected to one end of a return air duct, and the other end of the return air duct is connected to a heating pipe.

[0018] Furthermore, the sleeve kiln for calcining yellow phosphorus ore with yellow phosphorus tail gas also includes a central controller. The central controller is connected to an input section and an output section. The central controller is also connected to a touch screen. The touch screen is used to display the operating status and parameters of each part inside the sleeve kiln. The input section is used to detect the operating status of each part inside the sleeve kiln and feed it back to the central controller. The central controller drives each part inside the sleeve kiln to operate automatically through the output section.

[0019] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0020] 1. The calcination layer inside the sleeve kiln of the present invention is connected to an exhaust pipe. The exhaust pipe collects the mixed gas generated by calcining yellow phosphorus ore. The harmful gases in the mixed gas are neutralized by air compressor and reaction tank. The combustible gases contained in the mixed gas are collected into the gas storage tank. The tail gas generated by yellow phosphorus ore is recycled and reused, which reduces the corrosion of the sleeve kiln by harmful gases and improves the service life of the equipment.

[0021] 2. This invention includes a preheating chamber, which contains a circulation pipe and a preheating hood. The lower end of the preheating chamber is connected to a feeding pipe, which is used to transport yellow phosphorus ore into the circulation pipe. Through the circulation pipe, the yellow phosphorus ore can form a circulation within the preheating chamber. The preheating hood is connected to a heating pipe, which contains an ignition structure that can ignite the tail gas from the processed yellow phosphorus ore, thereby uniformly preheating and drying the circulating yellow phosphorus ore within the preheating chamber, thus improving the preheating effect of the yellow phosphorus ore. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale and orientation.

[0023] Figure 1 This is a schematic diagram of the device in this invention;

[0024] Figure 2 This is a top view of the water-spinning device of the present invention;

[0025] Figure 3 This is a cross-sectional view of the feeding component of the present invention;

[0026] Figure 4 This is a front view of the feeding component of the present invention;

[0027] Figure 5 This is a schematic diagram of the electrical network connection principle of the central controller in this invention;

[0028] Figure 6 This is a flowchart of the method implemented in this invention.

[0029] In the diagram: 1-Sleeve kiln, 2-Feed pipe, 3-Preheating chamber, 4-Circulation pipe, 5-Circulation blade, 6-First temperature sensor, 7-Preheating hood, 8-Feed three-way valve, 9-Circulation motor, 10-Heating pipe, 11-Second temperature sensor, 12-Air inlet pipe, 13-Air PID valve, 14-Gas pipe, 15-Gas PID valve, 16-Feeding pipe, 17-Feeding blade, 18-Feeding motor, 19-Feeding hopper, 20-Screening cylinder, 21-Screening gear, 22-Drive roller, 23-Fixing block, 24-Vibrating roller, 25-Rubber hammer, 2 6-Vibrating gear, 27-Feeding assembly, 28-Baffle, 29-Drive linkage, 30-Drive motor, 31-Calcination layer, 32-Exhaust pipe, 33-Air compressor, 34-Condenser, 35-First pipe, 36-Reaction vessel, 37-Calcium oxide, 38-Water separator, 39-Second pipe, 40-Gas storage tank, 41-Pressure sensor, 42-Upper rotary switch, 43-Third temperature sensor, 44-Exhaust fan, 45-Exhaust duct, 46-Gas-water separator, 47-Lower rotary switch, 48-Water separator motor, 49-Return air duct, 50-Helical blade. Detailed Implementation

[0030] like Figure 1 and Figure 2As shown, a sleeve kiln for calcining yellow phosphorus ore with tail gas includes a sleeve kiln 1 and a preheating chamber 3. The sleeve kiln 1 is provided with a calcination layer 31. One end of the calcination layer 31 is connected to an exhaust pipe 32, and the other end of the exhaust pipe 32 is connected to an air compressor 33. A condenser 34 is provided between the two. The air compressor 33 is connected to one end of a first pipe 35, and the other end of the first pipe 35 is connected to the bottom of a reaction tank 36. The mixed gas generated by calcining the yellow phosphorus ore in the calcination layer 31 is extracted by the air compressor 33, condensed by the condenser 34, and enters the reaction tank 36.

[0031] The bottom of the reaction vessel 36 is provided with a calcium hydroxide solution. The calcium hydroxide is used to absorb harmful gases such as sulfides and fluorides in the mixed gas. After absorption by the reaction vessel 36, only flammable gases remain in the mixed gas. A water-spinning device 38 is also provided in the middle of the reaction vessel 36. The water-spinning device 38 includes spiral blades 50. The spiral blades 50 have a certain curvature and form a disc shape with each other. The spiral blades 50 rotate towards the center. A water-spinning motor 48 is connected above the water-spinning device 38. The water-spinning motor 48 is used to rotate the spiral blades 50. The water-spinning device 38 is used to adsorb the water in the mixed gas after passing through the calcium hydroxide solution and throw the water onto the inner wall of the reaction vessel 36, and then let it flow to the bottom of the reaction vessel 36.

[0032] Above the water separator 38, calcium oxide 37 is also provided. Calcium oxide 37 is used to further absorb moisture and harmful gases in the gas in the reaction tank 36. The upper part of the reaction tank 36 is also connected to one end of a second pipe 39, and the other end of the second pipe 39 is connected to a gas storage tank 40. The mixed gas in the reaction tank 36 is adsorbed by calcium hydroxide solution and calcium oxide 37, and the moisture is adsorbed by the water separator 38, so that the dry combustible gas is stored in the gas storage tank 40.

[0033] The upper end of the gas storage tank 40 is equipped with a pressure sensor 41, which is used to detect the pressure of the combustible gas in the gas storage tank 40. The upper part of the gas storage tank 40 is also connected to a gas pipeline 14, and a gas PID valve 15 is also provided on the gas pipeline 14. The gas PID valve 15 is used to control the flow rate of the combustible gas flowing through the gas pipeline 14.

[0034] The preheating chamber 3 is used to temporarily store the screened yellow phosphorus ore. The upper part of the preheating chamber 3 is also equipped with an upper rotary switch 42, and the lower part of the preheating chamber 3 is also equipped with a lower rotary switch 47. The upper rotary switch 42 is used to detect the high liquid level of the yellow phosphorus ore in the preheating chamber 3, and the lower rotary switch 47 is used to detect the low liquid level of the yellow phosphorus ore in the preheating chamber 3. The preheating chamber 3 is also equipped with a preheating cover 7, which is a funnel shape with openings at the top and bottom and has a mesh structure.

[0035] The preheating chamber 3 is equipped with a circulation pipe 4. The bottom opening of the circulation pipe 4 is connected to one end of the feed pipe 2, and a feed three-way valve 8 is provided between the two. The other end of the feed pipe 2 is connected to the upper feed port of the sleeve kiln 1. Normally, the feed three-way valve 8 is closed, and the circulation pipe 4 is not connected to the feed pipe 2. When the feed three-way valve 8 is opened, the circulation pipe 4 is connected to the feed pipe 2. The circulation pipe 4 is equipped with circulation blades 5, which are spiral in shape. The end of the circulation pipe 4 is connected to a circulation motor 9, which drives the circulation blades 5 to rotate, so as to transport the yellow phosphorus ore at the bottom of the preheating chamber 3 to the top of the preheating chamber 3, thereby realizing the circulation of yellow phosphorus ore in the preheating chamber 3. The circulation pipe 4 is also equipped with a first temperature sensor 6, which is used to detect the temperature of the circulating yellow phosphorus ore in the circulation pipe 4.

[0036] The surface of the preheating hood 7 is also connected to a heating pipe 10, which is connected to a gas pipe 14. An ignition structure is also provided inside the heating pipe 10. The heating pipe 10 is also connected to an air intake pipe 12, which is equipped with an air PID valve 13. The air PID valve 13 is used to regulate the amount of air entering the heating pipe 10. A second temperature sensor 11 is also provided on the heating pipe 10, which is used to detect the temperature of the air inside the heating pipe 10 after heating.

[0037] The preheating chamber 3 is also connected to a feeding pipe 16 at the bottom. The feeding pipe 16 is equipped with feeding blades 17, which are spiral in shape. The feeding pipe 16 is connected to a feeding motor 18 at the end. The feeding motor 18 is used to drive the feeding blades 17 to rotate and transport yellow phosphorus ore into the preheating chamber 3. The preheating chamber 3 is connected to a feeding hopper 19 at the top. The feeding hopper 19 is equipped with a feeding assembly 27 at the top.

[0038] like Figure 3 and Figure 4 As shown, the feeding assembly 27 includes a screen cylinder 20, which is placed at an angle. The surface of the screen cylinder 20 is evenly distributed with screen holes. A baffle 28 is also fixed to the inner surface of the screen cylinder 20. The baffle 28 passes through both ends of the screen cylinder 20 and is in a spiral shape. Fixed blocks 23 are fixed to the surfaces of both ends of the screen cylinder 20. There is a groove in the middle of the fixed block 23, and a drive roller 22 is embedded in the groove. A drive connecting rod 29 is provided on one side of the screen cylinder 20. The drive roller 22 is fixed to the drive connecting rod 29. A drive motor 30 is connected to the end of the drive connecting rod 29. The drive motor 30 is used to drive the roller 22 to rotate, thereby driving the screen cylinder 20 to rotate. A vibrating roller 24 is provided on the other side of the screen cylinder 20, opposite to the drive connecting rod 29.

[0039] The surface of the vibrating roller 24 is connected to a rubber hammer 25 by a thin rope. A vibrating gear 26 is also fixed to the middle surface of the vibrating roller 24. The vibrating gear 26 meshes with a screening gear 21 through its teeth. The screening gear 21 is fixed to the middle surface of the screening cylinder 20. When the screening cylinder 20 rotates, it drives the vibrating roller 24 to rotate. The rubber hammer 25 strikes the screening cylinder 20 in turn, shaking off the yellow phosphorus ore in the screen of the screening cylinder 20 to prevent the screen from clogging.

[0040] The operator pours the crushed yellow phosphorus ore into the upper part of the screening cylinder 20. The screening cylinder 20 rotates, the feeding motor 18 starts, the vibrating roller 24 rotates, and the circulating motor 9 starts. After being screened by the rotating screen of the screening cylinder 20, the yellow phosphorus ore smaller than the screen diameter falls into the feeding hopper 19 and enters the bottom of the preheating chamber 3 through the feeding pipe 16. When the upper rotary switch 42 detects that the yellow phosphorus ore has reached the upper liquid level, the screening cylinder 20 and the feeding motor 18 are closed, the air PID valve 13 and the gas PID valve 15 are opened, the ignition structure is activated, and the combustible gas in the treated exhaust gas is ignited, and the air in the heating pipe 10 is heated.

[0041] like Figure 1 As shown, the upper outlet of the preheating chamber 3 is also connected to one end of an exhaust duct 45, and the other end of the exhaust duct 45 is connected to the inlet of a steam-water separator 46. An exhaust fan 44 and a third temperature sensor 43 are installed inside the exhaust duct 45. The third temperature sensor 43 is used to detect the temperature of the heated air inside the exhaust duct 45. The exhaust fan 44 is used to extract air and water vapor from the preheating chamber 3 to create a negative pressure inside the preheating chamber 3. The outlet of the steam-water separator 46 is connected to one end of a return air duct 49, and the other end of the return air duct 49 is connected to a heating pipe 10. The return air duct 49 is used to separate the air in the preheating chamber 3 from the water vapor in the steam-water separator 46, and then allow the air with residual heat to enter the heating pipe 10.

[0042] When the ignition structure is turned on, the induced draft fan 44 starts. The air temperature in the induced draft duct 45 is detected by the third temperature sensor 43, and the opening of the gas PID valve 15 and the air PID valve 13 is adjusted to maintain the preheating and calcination temperature of the yellow phosphorus ore in the preheating chamber 3 within the set value. When the preheating and calcination time reaches the set time, the gas PID valve 15, the air PID valve 13 and the induced draft fan 44 are closed, and the feed three-way valve 8 is opened. The preheated and calcined yellow phosphorus ore enters the calcination layer 31 for refining yellow phosphorus. When the rotary switch 47 detects that the liquid level of the yellow phosphorus ore has dropped to this point, the circulation motor 9 is turned off and the feed three-way valve 8 is closed.

[0043] like Figure 5As shown, the sleeve kiln for calcining yellow phosphorus ore with yellow phosphorus tail gas also includes a central controller. The central controller is connected to an input section and an output section. The central controller is also connected to a touch screen. The touch screen is used to display the operating status and parameters of each part in the sleeve kiln. The input section is used to detect the operating status of each part in the sleeve kiln and feed it back to the central controller. The central controller drives each part in the sleeve kiln to operate automatically through the output section.

[0044] The input section includes a first temperature sensor, a second temperature sensor, a third temperature sensor, a pressure sensor, an upper rotary switch, and a lower rotary switch. The output section includes a feed three-way valve, an air PID valve, a gas PID valve, a circulating motor, a feeding motor, a drive motor, an air compressor, and a water-spinning motor. The input section is used to detect the operating data of each part inside the kiln. The central controller sends operating commands to the output section based on the operating data detected by the input section, thereby realizing the automatic operation of each part inside the kiln.

[0045] The implementation method of this type of sleeve kiln for calcining yellow phosphorus ore with yellow phosphorus tail gas is described below.

[0046] like Figure 6 As shown, the process begins at step S100, and the process starts by executing step S101.

[0047] Step S101: Start the feeding motor, start the circulation motor, start the drive motor; after completion, proceed to step S102.

[0048] Step S102: The central controller determines whether there is yellow phosphorus ore at the upper rotary switch; if there is, proceed to step S103; if not, proceed to step S101.

[0049] Step S103: The feeding motor is turned off, the drive motor is turned off, and the induced draft fan is turned on; after completion, proceed to step S104.

[0050] Step S104: The air PID valve opens, the gas PID valve opens, and the ignition mechanism opens; after completion, proceed to step S105.

[0051] Step S105: The central controller determines whether the temperature inside the exhaust duct has reached the set value; if yes, proceed to step S107; otherwise, proceed to step S106.

[0052] Step S106: The central controller adjusts the opening of the air PID valve and the gas PID valve; after completion, proceed to step S105.

[0053] Step S107: The central controller determines whether the preheating and calcination time in the preheating chamber has reached the set value; if yes, proceed to step S108; otherwise, proceed to step S104.

[0054] Step S108: The air PID valve is closed, the gas PID valve is closed, and the ignition mechanism is closed; after completion, proceed to step S109.

[0055] Step S109: Open the feed three-way valve; after completion, proceed to step S110.

[0056] Step S110: The central controller determines whether there is yellow phosphorus ore at the lower rotary switch; if there is, proceed to step S109; if not, proceed to step S111.

[0057] Step S111: Close the feed three-way valve and shut down the circulation motor; after completion, proceed to step S112.

[0058] Step S112: The calcination layer of the sleeve kiln begins calcining yellow phosphorus ore, and the air compressor is turned on; after completion, proceed to step S113.

[0059] Step S113: Turn on the water-spinning motor; after completion, proceed to step S114.

[0060] Step S114: The central controller determines whether the yellow phosphorus ore in the sleeve kiln has been calcined; if yes, proceed to step S115; otherwise, proceed to step S112.

[0061] Step S115: Turn off the water spinneret motor and the air compressor.

[0062] The description of this invention is provided for illustrative purposes and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sleeve kiln device for calcining yellow phosphorus ore with yellow phosphorus tail gas, characterized in that: It includes a sleeve kiln (1) and a preheating chamber (3). The preheating chamber (3) is equipped with a circulation pipe (4). The upper end of the circulation pipe (4) is connected to one end of the feed pipe (2). A feed three-way valve (8) is provided between the two. The other end of the feed pipe (2) is connected to the upper feed port of the sleeve kiln (1). The circulation pipe (4) is equipped with circulation blades (5). The end of the circulation pipe (4) is connected to a circulation motor (9). The circulation pipe (4) is also equipped with a first temperature sensor (6). The upper part of the preheating chamber (3) is also provided with an upper rotary switch (42), the lower part of the preheating chamber (3) is also provided with a lower rotary switch (47), and the preheating chamber (3) is also provided with a preheating cover (7). The preheating cover (7) is in the shape of a funnel with openings at the top and bottom and has a mesh structure. The inner part of the sleeve kiln (1) is provided with a calcination layer (31), the calcination layer (31) is connected to one end of an exhaust pipe (32), the other end of the exhaust pipe (32) is connected to an air compressor (33), a condenser (34) is provided between the two, the air compressor (33) is connected to one end of a first pipe (35), the other end of the first pipe (35) is connected to the bottom of a reaction vessel (36); The bottom of the reaction tank (36) is provided with calcium hydroxide solution, and the middle part of the reaction tank (36) is also provided with a water-spinning device (38). The water-spinning device (38) includes a spiral blade (50). The spiral blade (50) has a certain curvature and forms a disc shape with each other. The spiral blade (50) rotates towards the center of the circle. A water-spinning motor (48) is connected above the water-spinning device (38). Above the water-spinning device (38) is a calcium oxide (37), and the upper part of the reaction tank (36) is connected to one end of a second pipe (39), and the other end of the second pipe (39) is connected to a gas storage tank (40). The upper end of the gas storage tank (40) is equipped with a pressure sensor (41), and the upper part of the gas storage tank (40) is also connected to a gas pipeline (14), and a gas PID valve (15) is also provided on the gas pipeline (14). The surface of the preheating cover (7) is also connected to a heating pipe (10), the heating pipe (10) is connected to a gas pipe (14), the heating pipe (10) is also provided with an ignition structure, the heating pipe (10) is also connected to an air intake pipe (12), the air intake pipe (12) is provided with an air PID valve (13), and the heating pipe (10) is also provided with a second temperature sensor (11). The preheating chamber (3) is also connected to one end of an exhaust pipe (45) at its upper outlet. The other end of the exhaust pipe (45) is connected to the inlet of a steam-water separator (46). An exhaust fan (44) and a third temperature sensor (43) are installed inside the exhaust pipe (45). The outlet of the steam-water separator (46) is connected to one end of a return air pipe (49). The other end of the return air pipe (49) is connected to a heating pipe (10). The preheating chamber (3) is also connected to a feeding pipe (16) at the bottom. The feeding pipe (16) is equipped with a feeding blade (17), which is spiral in shape. The feeding pipe (16) is connected to a feeding motor (18) at the end. The preheating chamber (3) is connected to a feeding hopper (19) at the top. The feeding hopper (19) is equipped with a feeding assembly (27) at the top.

2. The sleeve kiln device for calcining yellow phosphorus ore with yellow phosphorus tail gas as described in claim 1, characterized in that: The feeding assembly (27) includes a screen cylinder (20), which is placed at an angle. The surface of the screen cylinder (20) is evenly distributed with screen holes. A baffle (28) is also fixed to the inner surface of the screen cylinder (20). The baffle (28) passes through both ends of the screen cylinder (20) and is in a spiral shape. Fixed blocks (23) are fixed to the surfaces of both ends of the screen cylinder (20). There is a groove in the middle of the fixed block (23), and a drive roller (22) is embedded in the groove. A drive connecting rod (29) is provided on one side of the screen cylinder (20). The drive roller (22) is fixed to the drive connecting rod (29). A drive motor (30) is connected to the end of the drive connecting rod (29). A vibrating roller (24) is provided on the other side of the screen cylinder (20) relative to the drive connecting rod (29).

3. The sleeve kiln device for calcining yellow phosphorus ore with yellow phosphorus tail gas as described in claim 2, characterized in that: The surface of the vibrating roller (24) is connected to a rubber hammer (25) by a thin rope. A vibrating gear (26) is also fixed to the middle surface of the vibrating roller (24). The vibrating gear (26) meshes with a screening gear (21) through its teeth. The screening gear (21) is fixed to the middle surface of the screening cylinder (20).

4. The sleeve kiln device for calcining yellow phosphorus ore with yellow phosphorus tail gas as described in claim 1, characterized in that: It also includes a central controller, which is connected to an input section and an output section. The central controller is also connected to a touch screen, which is used to display the operating status and parameters of each part inside the sleeve kiln. The input section is used to detect the operating status of each part inside the sleeve kiln and feed it back to the central controller. The central controller drives each part inside the sleeve kiln to operate automatically through the output section.

Images