Nitrogen protection sintering furnace waste gas treatment device

Abstract

The utility model discloses a nitrogen protection sintering furnace waste gas treatment device which comprises a sintering furnace, the sintering furnace is communicated with a glass condensation pipe through a glass pipeline, the bottom of the glass condensation pipe is communicated with an oil storage tank through a glass pipeline, and the right end of the oil storage tank is communicated with a glass three-way valve. The top of the glass three-way valve is connected with a first one-way valve, the right end of the glass three-way valve is connected with a second one-way valve, the end, away from the oil storage tank, of the second one-way valve is communicated with a first right-angle glass bent pipe, and the bottom of the first right-angle glass bent pipe is communicated with a water phase collecting tank. A second right-angle glass bent pipe is communicated with the position, close to the top, of the right side of the water phase collecting tank. According to the utility model, the cloth bag and the communicating coil pipe are arranged, so that harmful substances in waste gas are effectively absorbed, the harm to the environment and personnel is reduced, the treatment cost of the waste gas is integrally reduced, the economic benefit is improved, and the expenditure is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a nitrogen-protected sintering furnace. Background Art

[0002] Carbon black is an important raw material in tire production. When the tires are produced and the unknown carbon black products in the tires need to be re-analyzed, the carbon black needs to be extracted from the tires again. The equipment needed in this extraction process is the nitrogen protected sintering furnace.

[0003] At present, a variety of materials are used in tires, including rubber, environmentally friendly oil, antioxidants, vulcanizers, etc., and most of the materials used are organic matter. These organic matter will produce a variety of compounds when they are cracked at high temperature. These compounds are basically harmful to the human body and the environment. At the same time, these compounds are gaseous at high temperatures and will mix with the nitrogen in the sintering furnace to form high-temperature exhaust gas. Because there are many and complex toxic and harmful substances in the exhaust gas, the existing equipment is prone to insufficient treatment when treating these exhaust gases, thereby causing damage to the environment and test personnel. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the toxic and harmful substances in the waste gas are numerous and mixed, which easily leads to insufficient treatment, and proposes a nitrogen protection sintering furnace waste gas treatment device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A nitrogen-protected sintering furnace waste gas treatment device comprises a sintering furnace, wherein the sintering furnace is connected to a glass condenser through a glass pipe, the bottom of the glass condenser is connected to an oil storage tank through a glass pipe, the right end of the oil storage tank is connected to a glass three-way valve, the top of the glass three-way valve is connected to a first one-way valve, the right end of the glass three-way valve is connected to a second one-way valve, the end of the second one-way valve away from the oil storage tank is connected to a first right-angle glass elbow, the bottom of the first right-angle glass elbow is connected to a water phase collection tank, the right side of the water phase collection tank near the top is connected to a second right-angle glass elbow, the bottom of the second right-angle glass elbow is connected to an organic phase collection tank, the liquid in the organic phase collection tank generally adopts a high-boiling-point, non-volatile green solvent, such as dipropylene glycol dimethyl ether, etc., the right side of the organic phase collection tank near the top is connected to an activated carbon absorption tank, and the pipeline inside the activated carbon absorption tank is connected by a silicone tube.

[0007] Preferably, a top cover is movably sleeved on the top of the activated carbon absorption tank, a connecting pipe is fixedly sleeved on the bottom of the activated carbon absorption tank, a connecting coil is integrally formed on the top of the connecting pipe, an exhaust hole is opened at the bottom of the connecting coil, and a blocking frame is provided on the top of the connecting coil.

[0008] Preferably, the bottom of the blocking frame is movably clamped with a limiting ring, and the limiting ring is fixedly connected to the inner side of the activated carbon absorption tank at a position away from the center.

[0009] Preferably, the bottom of the connecting coil is movably connected to a bottom frame, and the bottom of the bottom frame is fixedly connected to the inner bottom of the activated carbon absorption tank.

[0010] Preferably, a cloth bag is arranged on the inner side of the top of the blocking frame, the bottom of the cloth bag is in a hollow mesh shape, and an air outlet pipe is arranged on the top of the cloth bag.

[0011] Preferably, the top of the top cover is fixedly connected to the air outlet pipe, and the top of the top cover enables the interior of the sintering furnace to communicate with the external air through the air outlet pipe.

[0012] Preferably, a vacant portion is provided in the middle of the barrier frame, and the vacant portion in the middle of the barrier frame enables the bottom of the barrier frame to be connected with the top of the barrier frame, and the interior of the cloth bag is filled with biological adsorption particles, and the biological adsorption particles are activated carbon.

[0013] Compared with the prior art, the utility model provides a nitrogen protection sintering furnace waste gas treatment device, which has the following beneficial effects:

[0014] 1. The nitrogen-protected sintering furnace waste gas treatment device is provided with a cloth bag and a connecting coil, which is conducive to allowing the neutral gas in the cloth bag to be discharged through the exhaust hole, then pass through the barrier frame and the cloth bag, and be fully adsorbed by the activated carbon in the cloth bag before being discharged from the exhaust pipe. In this way, the waste gas is fully in contact with the activated carbon. At the same time, it can also avoid the situation where the activated carbon or activated carbon debris clogs the exhaust hole, effectively absorbs the harmful substances in the waste gas, reduces the harm to the environment and personnel, and reduces the overall cost of waste gas treatment, improves economic benefits, and uses some conventional substances, such as water, activated carbon and other items with low economic value, saving expenses.

[0015] 2. The nitrogen-protected sintering furnace waste gas treatment device is provided with a glass condenser tube, which uses serpentine condensation and multi-channel condensation, that is, more than two channels are added to one condenser tube, so that the high-temperature gas flows into multiple channels at the same time, increasing the condensation area and ensuring the condensation effect. At the same time, the cooling water can be cooled in a low-temperature constant temperature bath and then connected to the condenser tube. After using the low-temperature constant temperature bath, the condensation effect is better, and no external water source is required, and it can be recycled.

[0016] 3. The nitrogen protection sintering furnace waste gas treatment device is provided with a first one-way valve and a second one-way valve. Under normal circumstances, the first one-way valve is closed and the second one-way valve is opened to ensure the normal operation of the equipment. However, when a sintering furnace fails, a negative pressure will be formed in the sintering furnace. At this time, the first one-way valve can be opened and the second one-way valve can be closed to prevent the liquid in the water phase collection tank from being sucked back and flowing into the oil storage tank or even the sintering furnace, causing damage to the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall process of a nitrogen protection sintering furnace waste gas treatment device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of an activated carbon absorption tank of a nitrogen-protected sintering furnace waste gas treatment device proposed in the utility model.

[0019] Figure 3 This is a schematic diagram of a bag for a nitrogen-protected sintering furnace waste gas treatment device proposed in the utility model.

[0020] Figure 4 This is a schematic diagram of the bottom frame of a nitrogen-protected sintering furnace waste gas treatment device proposed in the utility model.

[0021] Figure 5 This is a schematic diagram of the exhaust hole of a nitrogen-protected sintering furnace waste gas treatment device proposed in the utility model.

[0022] In the figure: 1. sintering furnace; 2. glass condenser; 3. oil storage tank; 4. glass three-way valve; 5. first one-way valve; 6. second one-way valve; 7. first right-angle glass elbow; 8. water phase collecting tank; 9. second right-angle glass elbow; 10. organic phase collecting tank; 11. activated carbon absorption tank; 12. connecting pipe; 13. top cover; 14. exhaust pipe; 15. cloth bag; 16. blocking frame; 17. limit ring; 18. bottom frame; 19. connecting coil; 20. exhaust hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Reference Figure 1-5 A nitrogen-protected sintering furnace waste gas treatment device comprises a sintering furnace 1, which is connected to a glass condenser 2 through a glass pipe. The glass condenser 2 is provided with: the glass condenser 2 uses serpentine condensation and multi-channel condensation at the same time, adopts multi-channel cooling to increase the condensation area and ensure the condensation effect. The bottom of the glass condenser 2 is connected to an oil storage tank 3 through a glass pipe, the right end of the oil storage tank 3 is connected to a glass three-way valve 4, the top of the glass three-way valve 4 is connected to a first non-return valve 5, the right end of the glass three-way valve 4 is connected to a second non-return valve 6, the end of the second non-return valve 6 away from the oil storage tank 3 is connected to a first right-angle glass bend 7, the bottom of the first right-angle glass bend 7 is connected to a water phase collection tank 8, the right side of the water phase collection tank 8 near the top is connected to a second right-angle glass bend 9, the bottom of the second right-angle glass bend 9 is connected to an organic phase collection tank 10, and the right side of the organic phase collection tank 10 near the top is connected to an activated carbon absorption tank 11.

[0026] Reference Figure 1-5The top of the activated carbon absorption tank 11 is movably sleeved with a top cover 13, and the top of the top cover 13 is fixedly connected to the air outlet pipe 14. The top of the top cover 13 connects the inside of the sintering furnace 1 with the outside air through the air outlet pipe 14. The bottom of the activated carbon absorption tank 11 is fixedly sleeved with a connecting pipe 12, and the top of the connecting pipe 12 is integrally formed with a connecting coil 19. The connecting coil 19 is provided with a function that allows the gas coming out of the exhaust hole 20 to fully contact with the activated carbon above the connecting coil 19 to ensure the adsorption effect of the activated carbon. The bottom of the connecting coil 19 is movably connected with a bottom frame 18, and the bottom frame 18 is provided with a function that is used to leave a certain space for the exhaust hole 20 to facilitate the exhaust of the exhaust hole 20. The bottom of the bottom frame 18 is fixedly connected to the inner bottom of the activated carbon absorption tank 11, and the connecting coil An exhaust hole 20 is provided at the bottom of 19. The exhaust hole 20 is provided at the bottom of the connecting coil 19. After being wrapped by the cloth bag 15, the activated carbon or activated carbon debris can be prevented from clogging the exhaust hole 20, which affects the gas outlet. An intercepting frame 16 is provided at the top of the connecting coil 19. A vacant portion is provided in the middle of the intercepting frame 16. The vacant portion in the middle of the intercepting frame 16 makes the bottom of the intercepting frame 16 connected to the top of the intercepting frame 16. The interior of the cloth bag 15 is filled with biological adsorption particles, which are activated carbon. The bottom of the intercepting frame 16 is movably connected to a limiting ring 17, and the limiting ring 17 is fixedly connected to the inner side of the activated carbon absorption tank 11 away from the center. A cloth bag 15 is provided on the inner side of the top of the intercepting frame 16, and an air outlet pipe 14 is provided on the top of the cloth bag 15.

[0027] In the utility model, when in use, the high-temperature exhaust gas generated by the cracking of the sintering furnace 1 is discharged through the glass tube mouth, and the gas flows into the glass condenser tube 2. At the same time, the condensing water is turned on, and the water enters from the left bottom mouth of the glass condenser tube 2 and exits from the right top mouth. The water should enter from a low place and exit from a high place to increase the condensation effect. At the same time, if you want to achieve a better condensation effect, the cooling water can be cooled in a low-temperature constant temperature tank and then connected to the condenser tube. After using the low-temperature constant temperature tank, the condensation effect is better, and there is no need to connect an external water source to circulate the water, and the high-temperature exhaust gas After condensation, a part of waste gas can be directly condensed into cracking oil, which flows into the oil storage tank 3, and the cracking oil is collected at the bottom of the oil storage tank 3. The remaining gas passes through the glass three-way valve 4. Normally, the first one-way valve 5 is closed, and the second one-way valve 6 is opened, so that the waste gas flows into the water phase collecting tank 8. When the sintering furnace 1 suddenly fails, negative pressure can be formed on the left side. At this moment, the first one-way valve 5 can be opened, and the second one-way valve 6 is closed to prevent the liquid in the water phase collecting tank 8 from being sucked back, and flows into the oil storage tank 3, even in the sintering furnace 1, causing the damage of the instrument;

[0028] The gas passing through the second one-way valve 6 flows into the water phase collection tank 8 through the first right-angle glass elbow 7, the outlet of the first right-angle glass elbow 7 is below the water surface, so as to fully absorb the nitrogen oxides, sulfur oxides and other harmful substances soluble in water in the gas. The remaining gas after the water phase absorption flows into the organic phase collection tank 10 through the second right-angle glass elbow 9, the outlet of the organic phase collection tank 10 is below the liquid surface of the organic phase. The organic phase generally uses a high-boiling point, non-volatile green solvent, such as dipropylene glycol dimethyl ether, so as to fully absorb the gas soluble in the organic phase. The gas after complete absorption is discharged to the activated carbon absorption tank 11 through a pipeline, and the oil storage tank 3, the water phase collection tank 8 and the organic phase collection tank 10 can all be replaced by commercially available suction bottles;

[0029] The gas entering the connecting pipe 12 is already a relatively clean gas, and the gas may contain substances that are insoluble in water and organic phase. The gas passes through the activated carbon absorption tank 11, which can be made of metal or glass. The gas in the connecting pipe 12 flows into the connecting coil 19, which is spiraled at the inner bottom of the activated carbon absorption tank 11 and mounted on the bottom frame 18, leaving a certain space for the exhaust hole 20. At the same time, the pipeline outlet of the connecting coil 19 is closed, and the bottom of the connecting coil 19 is covered with exhaust holes 20. When the gas flows through the connecting coil 19, it will slowly overflow from the exhaust hole 20. Because the gas is relatively light, after rising through the barrier frame 16, it will fully contact with the activated carbon in the bag 15. This method can increase the contact area between the gas and the activated carbon, making it easier to adsorb. After the toxic gas in the remaining gas is completely absorbed by the activated carbon, the treated gas is basically only nitrogen, without other dangerous substances. The composition is the same as that of normal air. After being discharged through the outlet pipe 14, it will not cause harm to the environment and personnel and can be directly discharged into the air.

[0030] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A nitrogen-protected sintering furnace waste gas treatment device, comprising a sintering furnace (1), characterized in that: The sintering furnace (1) is connected to a glass condenser (2) via a glass pipe, the bottom of the glass condenser (2) is connected to an oil storage tank (3) via a glass pipe, the right end of the oil storage tank (3) is connected to a glass three-way valve (4), the top of the glass three-way valve (4) is connected to a first one-way valve (5), the right end of the glass three-way valve (4) is connected to a second one-way valve (6), the end of the second one-way valve (6) away from the oil storage tank (3) is connected to a first right-angle glass bend (7), the bottom of the first right-angle glass bend (7) is connected to a water phase collection tank (8), the right side of the water phase collection tank (8) near the top is connected to a second right-angle glass bend (9), the bottom of the second right-angle glass bend (9) is connected to an organic phase collection tank (10), and the right side of the organic phase collection tank (10) near the top is connected to an activated carbon absorption tank (11).

2. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 1 is characterized in that: The top of the activated carbon absorption tank (11) is movably sleeved with a top cover (13), the bottom of the activated carbon absorption tank (11) is fixedly sleeved with a connecting pipe (12), the top of the connecting pipe (12) is integrally formed with a connecting coil (19), the bottom of the connecting coil (19) is provided with an exhaust hole (20), and the top of the connecting coil (19) is provided with a blocking frame (16).

3. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 2 is characterized in that: The bottom of the blocking frame (16) is movably engaged with a limiting ring (17), and the limiting ring (17) is fixedly connected to the inner side of the activated carbon absorption tank (11) at a position away from the center.

4. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 2 is characterized in that: The bottom of the connecting coil (19) is movably connected to a bottom frame (18), and the bottom of the bottom frame (18) is fixedly connected to the inner bottom of the activated carbon absorption tank (11).

5. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 2 is characterized in that: A cloth bag (15) is arranged on the inner side of the top of the blocking frame (16), and an air outlet pipe (14) is arranged on the top of the cloth bag (15).

6. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 2 is characterized in that: The top of the top cover (13) is fixedly connected to the air outlet pipe (14), and the top of the top cover (13) enables the interior of the sintering furnace (1) to communicate with the external air through the air outlet pipe (14).

7. The nitrogen protection sintering furnace exhaust gas treatment device according to claim 5, characterized in that: A vacant portion is provided in the middle of the barrier frame (16), and the vacant portion in the middle of the barrier frame (16) enables the bottom of the barrier frame (16) to be connected to the top of the barrier frame (16), and the interior of the cloth bag (15) is filled with biological adsorption particles.

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