Continuous phosphorus vaporization burner

Abstract

The technical solution of the present invention provides a continuous phosphorus vaporization burner, comprising: a tail gas mixing flow box, a gas delivery cylinder, a gas mixing flow box, a diversion structure and a combustion cylinder; the internal structures of the tail gas mixing flow box and the gas mixing flow box are both mixed flow structures, and the mixed flow structure comprises a circular box body, two diagonally symmetrical input pipes tangent to and connected to the circular box body, two arc ribs arranged in the circular box body and tangent to the input pipes, two air inlets respectively arranged between the ribs and the input pipes for communication, and an exhaust port opened at the axis of the circular box body and perpendicular to the circular box body. The present invention comprehensively improves the success rate of ignition by fully mixing yellow phosphorus tail gas and air, and is not easy to burn and explode. In addition, with the cooperation of multiple evenly distributed auxiliary burners and main burners on the burner ring disk, the yellow phosphorus tail gas can be output more finely, and the combustion is more complete and stable.

Description

Technical Field

[0001] The invention relates to the technical field of yellow phosphorus tail gas combustion, in particular to a continuous phosphorus vaporization burner. Background Art

[0002] In the existing production of yellow phosphorus, the generated yellow phosphorus tail gas is usually recycled and reused. Taking advantage of its combustible properties, the yellow phosphorus tail gas is burned as a heat source, saving the consumption of energy consumables such as coal.

[0003] For example, the Chinese patent with authorization announcement number CN 201722151 U utilizes the yellow phosphorus tail gas from an electric furnace to heat a device for recovering yellow phosphorus from mud phosphorus. The yellow phosphorus tail gas from an electric furnace is used as a heating source, and the tail gas combustion is used to replace the original raw coal as fuel, which not only saves raw coal but also reduces the pollution to the atmosphere caused by the combustion of raw coal.

[0004] Most of the current utilization of yellow phosphorus tail gas is similar to that in the above-mentioned patent, using the tail gas as fuel, and the heating of continuous phosphorus evaporation also uses the yellow phosphorus tail gas for combustion heating. However, when the yellow phosphorus tail gas burner in the existing technology burns it, the ignition success rate is low due to insufficient mixing of the tail gas and air, and insufficient stability of the yellow phosphorus tail gas pre-combustion. Ignition failure will cause gas to accumulate at the combustion site, and re-ignition is likely to cause explosion. Therefore, a continuous phosphorus evaporation burner is needed to improve the above-mentioned problems. Summary of the Invention

[0005] In view of this, it is necessary to provide a continuous phosphorus vaporization burner to solve the technical problem of low ignition success rate in the prior art.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a continuous phosphorus vaporization burner, comprising: an exhaust gas mixing flow box, a gas delivery cylinder, a fuel gas mixing flow box, a diversion structure and a combustion cylinder;

[0007] The internal structures of the exhaust gas mixing box and the gas mixing box are both mixed flow structures, which include a circular box body, two diagonally symmetrical input pipes tangent to and connected to the circular box body, two arc ribs arranged in the circular box body and tangent to the input pipes, two air inlets respectively arranged between the ribs and the input pipes for communication, and an exhaust port opened at the axis of the circular box body and perpendicular to the circular box body. The exhaust port on the exhaust gas mixing box is connected to a control valve, and the exhaust port on the gas mixing box is connected to a gas pipe.

[0008] The gas cylinder is connected to the control valve, the gas mixing box is installed on the outside of the gas cylinder, the diversion structure is located on the inside of the gas cylinder and connected to the gas pipe, the combustion cylinder is threadedly connected to the gas cylinder, a burner ring disk is inserted between the combustion cylinder and the gas cylinder, a main burner is inserted between the diversion structure and the burner ring disk, and the diversion structure is used to switch the air intake between gas combustion and exhaust gas combustion.

[0009] Furthermore, the two input pipes on the exhaust gas mixing box are respectively connected to the exhaust gas pipe and the first air pipe.

[0010] Furthermore, the two input pipes on the gas mixing box are respectively connected to the gas pipe and the second air pipe, and the bottom end of the gas pipe passes through the gas cylinder and extends to the inner side of the gas cylinder.

[0011] Furthermore, the diversion structure is fixed to the inner wall of the gas cylinder through several rods, and the diversion structure is fixed to the inner wall of the gas cylinder through several rods. The diversion structure includes a main cylinder, a first valve, a second valve and a connecting hole. The main cylinder is connected to the rod, and the first valve and the second valve are respectively arranged on the outside and the left end of the main cylinder. The connecting hole is opened on the right side of the main cylinder, and the first valve is connected to the gas pipe.

[0012] Furthermore, the main burner is connected to the communicating hole, and a groove is provided on the right side of the communicating hole. A clamping ring is provided on the left side of the main burner, and the clamping ring is plugged into the groove.

[0013] Furthermore, a magnetic ring is provided on one side of the clamping ring opposite to the groove.

[0014] Furthermore, the burner ring disk includes a disk body, an inner ring hole, several auxiliary burners and several electrode sockets. Several of the auxiliary burners are evenly distributed on the right side of the disk body, and several of the electrode sockets are opened on the right side of the disk body. The inner ring hole is located at the axial center of the disk body. Several ignition electrodes are arranged in the gas cylinder, and the electrode sockets are used to pass through the ignition electrodes.

[0015] Furthermore, the main burner is plugged into the inner ring hole, and a first sealing gasket is provided on the left side of the disc body, and the position of the first sealing gasket corresponds to the position of the main cylinder body.

[0016] Furthermore, a first inner step groove is opened on the right side of the gas cylinder, and the disc body is inserted into the first inner step groove.

[0017] Furthermore, a second inner step groove is opened on the left side of the combustion tube, and a second sealing gasket ring is provided on the right side wall of the second inner step groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the spiral mixed gas structure of the mixed flow structure, the yellow phosphorus tail gas and air can be fully mixed. Combined with the gas pre-ignition method, the ignition success rate is comprehensively improved, and it is not easy to burn or explode. In addition, with the cooperation of multiple evenly distributed auxiliary burners and main burners on the burner ring disk, the yellow phosphorus tail gas can be output more densely, and the combustion is more complete and stable.

[0020] 2. The combustion tube is connected to the gas cylinder through threads, and under the threaded connection, the burner ring disk and the main burner are installed in a plug-in installation manner and fixed in position, which is convenient for disassembly, assembly and cleaning of the combustion tube, burner ring disk and main burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 2 is a schematic structural diagram of a continuous phosphorus evaporation burner according to an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional view of a gas delivery cylinder and a combustion cylinder according to an embodiment of the present invention;

[0023] Figure 3 is a structural cross-sectional view of a mixed flow structure according to an embodiment of the present invention;

[0024] Figure 4 is a three-dimensional diagram of a burner ring disk according to an embodiment of the present invention;

[0025] Figure 5 According to an embodiment of the present invention Figure 2 A partial enlarged view of part A;

[0026] Figure 6 According to an embodiment of the present invention Figure 2 A partial enlarged view of part B;

[0027] In the figure: 1, exhaust gas mixing box; 11, control valve; 2, gas cylinder; 3, gas mixing box; 31, gas pipe;

[0028] 4. Diversion structure; 41. Main cylinder; 42. First valve; 43. Second valve; 44. Connecting hole; 45. Magnetic ring; 441. Groove;

[0029] 5. Combustion tube; 51. Ignition electrode; 52. Second inner step groove; 53. Second sealing ring;

[0030] 6. Burner ring disc; 61. Disc body; 62. Inner ring hole; 63. Auxiliary burner; 64. Electrode socket; 65. First sealing ring;

[0031] 7. Main burner; 71. Snap ring;

[0032] 100. Mixed flow structure; 101. Circular box; 102. Input pipe; 103. Arc rib; 104. Air inlet; 105. Exhaust port. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0034] like Figure 1-3 As shown, the present invention provides a continuous phosphorus vaporization burner, including an exhaust gas mixing flow box 1, a gas cylinder 2, a fuel gas mixing flow box 3, a diversion structure 4 and a combustion cylinder 5. The fuel gas mixing flow box 3 is installed on the outside of the gas cylinder 2. The gas cylinder 2 is used to connect the exhaust gas mixing flow box 1 and the fuel gas mixing flow box 3. The diversion structure 4 is used to switch the air intake of fuel gas combustion and exhaust gas combustion, and the gas burns in the combustion cylinder 5.

[0035] Furthermore, the internal structures of the exhaust gas mixing box 1 and the gas mixing box 3 are both mixing structures 100. The mixing structure 100 mainly realizes the function of fully mixing two different gases. Specifically, the mixing structure 100 includes a circular box body 101, two diagonally symmetrical input pipes 102 that are tangent to and connected to the circular box body 101, two arc ribs 103 arranged in the circular box body 101 and tangent to the input pipes 102, two air inlets 104 respectively arranged between the ribs 103 and the input pipes 102 for communication, and an exhaust port 104 opened at the axis of the circular box body 101 and perpendicular to the circular box body 101. 5. The arc ribs 103 form an inner circle concentric with the circular box body 101. When the two tangent input pipes 102 input the gas, the gas enters the circular box body 101 along the input pipes 102 and passes through the air inlet 104 in an arc curve under the guidance of the arc ribs 103 and enters the inner side of the two arc ribs 103. Under the inner spiral, the two gases impact and mix, and then are discharged from the exhaust port 105. This structure is used to spirally mix the two gases, making the mixing more complete, reducing ignition failure and unstable combustion caused by insufficient mixing of fuel gas and air, and improving the ignition success rate and combustion stability.

[0036] Furthermore, the exhaust port 105 on the exhaust mixing box 1 is connected to a control valve 11, which is used to control the output of the exhaust gas and air mixture. When the control valve 11 is open, the yellow phosphorus exhaust gas mixture can be output. Conversely, when the control valve 11 is closed, the yellow phosphorus exhaust gas mixture is not output; the exhaust port 105 on the gas mixing box 3 is connected to a gas pipe 31, which mainly outputs a mixture of gas and air. Using the same mixing structure 100, a gas mixture with a better mixing effect can be obtained; the gas cylinder 2 is connected to the control valve 11, and the diverter structure 4 is located on the inner side of the gas cylinder 2 and is connected to the gas pipe 31. The diverter structure 4 is used to receive the gas mixture and output it, and has a switchable control function to control the input of the gas mixture and can switch to the input of the yellow phosphorus exhaust mixture.

[0037] Furthermore, the combustion tube 5 is threadedly connected to the gas cylinder 2, and the combustion tube 5 is sleeved on the outside of the gas cylinder 2. A threaded groove is provided on the inner side of the combustion tube 5, and the threaded groove matches the external thread provided on the outside of the gas cylinder 2. The combustion tube 5 is threadedly connected to the gas cylinder 2 by sleeved on the gas cylinder 2 and rotated; a burner ring disk 6 is inserted between the combustion tube 5 and the gas cylinder 2, and a main burner 7 is inserted between the diversion structure 4 and the burner ring disk 6, and the main burner 7 passes through the inner hole of the burner ring disk 6. The burner ring disk 6 and the main burner 7 are installed in a detachable manner of threaded connection and insertion, which is convenient for the subsequent one-time disassembly of the burner ring disk 6, the combustion tube 5 and the main burner 7, as well as cleaning and maintenance.

[0038] During use, the gas and air are first mixed through the gas mixing box 3, and then input into the diversion structure 4 through the gas pipe 31. The diversion structure 4 controls the flow direction so that it flows to the main burner 7 to ignite the gas mixture. The gas mixture has a higher combustion stability than the yellow phosphorus tail gas mixture. The gas mixture is pre-combusted to improve the success rate of ignition. Then, the control valve 11 is opened and the gas mixed with tail gas and air is input into the main burner 7 through the tail gas mixing box 1 through the gas cylinder 2. To the burner ring disk 6, in conjunction with the gas flame that has been ejected and burned at the main burner 7, and re-ignited, the exhaust gas mixture output from the burner ring disk 6 is ignited, with a high ignition success rate, and then the gas intake is cut off through the diversion structure 4, and the exhaust gas mixture intake at this position is opened, thereby replacing the fuel source of the main burner 7 with the exhaust gas mixture. With the cooperation of the main burner 7 and the burner ring disk 6, sufficient air intake is carried out with multiple burners distributed in a dispersed manner, which can fully burn the exhaust gas mixture and form a more stable flame.

[0039] Optionally, in this embodiment, the two input pipes 102 on the exhaust gas mixing box 1 are connected to the exhaust pipe and the first air pipe respectively. The exhaust pipe inputs yellow phosphorus exhaust gas, and the first air pipe inputs air, thereby mixing the yellow phosphorus exhaust gas with the air.

[0040] It can be understood that both the exhaust pipe and the first air pipe are provided with valves for control so as to control the amount of air intake and whether air intake occurs.

[0041] This embodiment is optional. The two input pipes 102 on the gas mixing box 3 are respectively connected to a gas pipe and a second air pipe. The gas pipe inputs gas, and the second air pipe inputs air, thereby mixing the gas and air. The bottom end of the gas pipe 31 passes through the gas cylinder 2 and extends to the inner side of the gas cylinder 2. The gas mixture is introduced into the diversion structure 4 through the gas pipe 31.

[0042] It can be understood that the fuel gas can be a stable gas fuel such as coal gas, and both the gas pipeline and the second air pipeline are provided with valves for control so as to control the air intake amount and whether air is intaken.

[0043] In one embodiment, in order to achieve the effect of switching between gas and exhaust gas, refer to Figure 2 The diversion structure 4 is fixed to the inner wall of the gas cylinder 2 through a number of rods. The number of rods can be three, and the three rods are distributed in a circle on the inner wall of the gas cylinder 2. The diversion structure 4 includes a main cylinder 41, a first valve 42, a second valve 43 and a connecting hole 44. The main cylinder 41 is connected to the rod, and the rod plays a fixing role, fixing the main cylinder 41 in the gas cylinder 2. The first valve 42 and the second valve 43 are respectively arranged on the outside and the left end of the main cylinder 41. The connecting hole 44 is opened on the right side of the main cylinder 41. The first valve 42 is connected to the gas pipe 31 for controlling the input of the yellow phosphorus tail gas mixture. The first valve 42 corresponds to the air intake and air closing of the gas pipe 31 to control the entry of the gas mixture. The second valve 43 is closed when the gas mixture is opened to enter, and is open when the tail gas mixture needs to enter. At this time, the first valve 42 is closed.

[0044] It can be understood that when the fuel gas mixture enters the state, the first valve 42 is opened and the second valve 43 is closed; when the fuel gas mixture enters the state, the first valve 42 is closed and the second valve 43 is opened.

[0045] Further, in order to conveniently install the main burner 7, refer to Figure 2 and Figure 5The main burner 7 is docked with the connecting hole 44, and the connecting hole 44 connects the main burner 7 and the diversion structure 4. The connecting hole 44 is used to transport gas to the main burner 7, and a groove 441 is provided on the right side of the connecting hole 44. A clamping ring 71 is provided on the left side of the main burner 7, and the clamping ring 71 is plugged into the groove 441. A magnetic ring 45 is provided on the side opposite to the clamping ring 71 and the groove 441. The clamping ring 71 is inserted into the groove 441 and can be quickly connected and positioned through the magnetic ring 45. In addition, the outer diameter of the clamping ring 71 is larger than the outer diameter of the main burner 7. Under the step difference of the outer diameter, the main burner 7 is inserted into the inner hole of the burner ring disk 6, and then the burner ring disk 6 is fitted, and the burner ring disk 6 is fitted to the other side of the clamping ring 71. The clamping ring 71 is positioned to complete the installation of the main burner 7.

[0046] In one embodiment, in order to obtain a more uniform exhaust gas mixture output, reference is made to Figure 2 and Figure 4 The burner ring disk 6 includes a disk body 61, an inner ring hole 62, a plurality of auxiliary burners 63 and a plurality of electrode sockets 64. The plurality of auxiliary burners 63 are evenly distributed on the right side of the disk body 61. The number of auxiliary burners 63 is thirty. The auxiliary burners 63 pass through the left and right sides of the disk body 61 to output the yellow phosphorus tail gas mixture; the plurality of electrode sockets 64 are all opened on the right side of the disk body 61. The number of electrode sockets 64 is five, four of which are distributed in a circle and one is located next to the inner ring hole 62; the inner ring hole 62 is located at the axial center position of the disk body 61, and the inner ring hole 62 is used for the penetration of the main burner 7; a plurality of ignition electrodes 51 are arranged in the gas cylinder 2, the number of the ignition electrodes 51 is the same as the number of the electrode sockets 64, and the position of the ignition electrode 51 also corresponds to the position of the electrode socket 64. The electrode socket 64 is used to penetrate the ignition electrode 51 and ignite the combustible gas through the ignition electrode 51.

[0047] It can be understood that with the dispersed and uniform distribution of multiple auxiliary burners 63, the exhaust gas mixture can be discharged more finely, so that the exhaust gas mixture can be more evenly distributed inside the combustion tube 5, obtaining more complete combustion and a more stable flame.

[0048] This embodiment is optional. In order to obtain a good sealing effect during installation, refer to Figure 2 、 Figure 5 and Figure 6The main burner 7 is plugged into the inner ring hole 62, and a first sealing gasket ring 65 is provided on the left side of the disc body 61, and the position of the first sealing gasket ring 65 corresponds to the position of the main cylinder body 41. The first sealing gasket ring 65 is in close contact with the main cylinder body 41 to seal the disc body 61, the main burner 7 and the diversion structure 4; a first inner step groove 21 is provided on the right side of the gas cylinder 2, and the disc body 61 is inserted into the first inner step groove 21, and a second inner step groove 52 is provided on the left side of the combustion cylinder 5, and a second sealing gasket ring 53 is provided on the right side wall of the second inner step groove 52, which is inserted into the first inner step groove 21 through the disc body 61, and the second sealing gasket ring 53 in the second inner step groove 52 is in contact with the disc body 61, so as to seal the disc body 61 and the disc body 61 and the combustion cylinder 5.

[0049] The specific working process of the present invention is as follows: before ignition, the gas and air are first mixed through the gas mixing box 3, and the mixed gas and air are introduced into the diversion structure 4 through the gas pipe 31. The first valve 42 on the diversion structure 4 is opened, and the second valve 43 is closed. The gas mixture is stably output by the main burner 7 and then ignited by the ignition electrode 51, thereby obtaining a stable pre-ignition effect; after pre-ignition, the control valve 11 is opened, and the exhaust gas mixture is input from the exhaust gas mixing box 1, and the exhaust gas is mixed and enters the gas cylinder 2, and is output by the auxiliary burner 63, and is ignited in conjunction with the reburned gas flame and the secondary ignition electrode 51, thereby stably igniting the yellow phosphorus exhaust gas mixture, and the ignition success rate is high; after the exhaust gas mixture is ignited, the first valve 42 is closed and the second valve 43 is opened, and then all the yellow phosphorus exhaust gas is input. When it is necessary to clean and replace the combustion tube 5, the burner ring disk 6 and the main burner 7, the combustion tube 5, the burner ring disk 6 and the main burner 7 can be disassembled together by directly rotating and disassembling the combustion tube 5. When installing, first insert the main burner 7 into the groove 441, then put the disk body 61 into the first inner step groove 21, and insert the main burner 7 into the inner ring hole 62, and the ignition electrode 51 into the electrode socket 64. Finally, put the combustion tube 5 onto the gas cylinder 2 and rotate it to install it so that the right side wall of the second inner step groove 52 fits the disk body 61. The installation is quick and convenient for disassembly and cleaning of the burner part.

[0050] The entire workflow is complete, and all contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A continuous phosphorus vaporization burner, characterized in that: include: Exhaust gas mixing box, gas delivery cylinder, fuel gas mixing box, diversion structure and combustion cylinder; The internal structures of the exhaust gas mixing box and the gas mixing box are both mixed flow structures, which include a circular box body, two diagonally symmetrical input pipes tangent to and connected to the circular box body, two arc ribs arranged in the circular box body and tangent to the input pipes, two air inlets respectively arranged between the ribs and the input pipes for communication, and an exhaust port opened at the axis of the circular box body and perpendicular to the circular box body. The exhaust port on the exhaust gas mixing box is connected to a control valve, and the exhaust port on the gas mixing box is connected to a gas pipe. The gas cylinder is connected to the control valve, the gas mixing box is installed on the outside of the gas cylinder, the diverter structure is located on the inside of the gas cylinder and connected to the gas pipe, the combustion cylinder is threadedly connected to the gas cylinder, a burner ring disk is inserted between the combustion cylinder and the gas cylinder, a main burner is inserted between the diverter structure and the burner ring disk, and the diverter structure is used to switch the air intake between gas combustion and exhaust gas combustion; The two input pipes on the exhaust gas mixing box are respectively connected to the exhaust gas pipe and the first air pipe; The two input pipes on the gas mixing box are connected to the gas pipe and the second air pipe respectively, and the bottom end of the gas pipe passes through the gas cylinder and extends to the inside of the gas cylinder; The diversion structure is fixed to the inner wall of the gas cylinder through a plurality of rods. The diversion structure includes a main cylinder, a first valve, a second valve, and a communication hole. The main cylinder is connected to the rod. The first valve and the second valve are respectively arranged on the outside and the left end of the main cylinder. The communication hole is opened on the right side of the main cylinder. The first valve is connected to the gas pipe. The main burner is connected to the communication hole, and a groove is provided on the right side of the communication hole. A clamping ring is provided on the left side of the main burner, and the clamping ring is plugged into the groove. A magnetic ring is provided on one side of the clamping ring opposite to the groove; The burner ring disk includes a disk body, an inner ring hole, several auxiliary burners and several electrode sockets. The several auxiliary burners are evenly distributed on the right side of the disk body. The several electrode sockets are all opened on the right side of the disk body. The inner ring hole is located at the axial center of the disk body. Several ignition electrodes are arranged in the gas cylinder, and the electrode sockets are used to pass through the ignition electrodes.

2. The continuous phosphorus vaporization burner according to claim 1, characterized in that: The main burner is plugged into the inner ring hole. A first sealing gasket is provided on the left side of the disc body, and the position of the first sealing gasket corresponds to the position of the main cylinder body.

3. The continuous phosphorus vaporization burner according to claim 2, characterized in that: A first inner step groove is provided on the right side of the gas delivery cylinder, and the disc body is inserted into the first inner step groove.

4. The continuous phosphorus vaporization burner according to claim 3, characterized in that: A second inner step groove is provided on the left side of the combustion tube, and a second sealing gasket ring is provided on the right side wall of the second inner step groove.

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