Continuous smoke and sulfur discharge waste gas treatment device for graphitization furnace

Abstract

The invention discloses a continuous smoke and sulfur discharge waste gas treatment device for a graphitization furnace, the continuous smoke and sulfur discharge waste gas treatment device comprises a collection mechanism, an asphalt removal mechanism and a desulfurization mechanism, the collection mechanism comprises a transfer track and a gas collection hood; the asphalt removal mechanism comprises a spray tower and an electrical tar precipitator, an inlet of the spray tower is communicated with an outlet of the gas collecting hood, and an inlet of the electrical tar precipitator is communicated with an outlet of the spray tower; the desulfurization mechanism comprises an induced draft fan and a desulfurization tower, an inlet of the induced draft fan is communicated with an outlet of the electrical tar precipitator, and an outlet of the induced draft fan is communicated with an inlet of the desulfurization tower. The technical scheme provided by the invention has the beneficial effects that each graphitization furnace is moved through the transfer track, so that each graphitization furnace is respectively moved below the gas collecting hood, a flue gas collecting device does not need to be independently arranged for each graphitization furnace, the production cost is reduced, the waste gas is subjected to spraying and humidifying pretreatment through the spraying tower, and the production efficiency is improved. The specific resistance of the asphalt fume can be reduced, and the removal efficiency of the asphalt fume is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device for continuous smoke and sulfur exhaust of a graphitization furnace. Background Art

[0002] During the production process of the graphitization furnace, the waste gas generated mainly contains harmful components such as particulate matter and asphalt smoke, which causes certain pollution to the environment and also affects the stable operation of desulfurization. Therefore, the flue gas must be sprayed for cooling and dust removal and asphalt smoke control first.

[0003] The characteristics of asphalt smoke are that at lower temperatures, particulate matter will mix with the collected asphalt smoke, reducing the fluidity of asphalt tar, causing the asphalt tar collected by the electric tar collector to adhere to the equipment wall and cannot be discharged, thereby clogging the equipment and pipelines, affecting the operation of environmental protection equipment. At the same time, the specific resistance of dry asphalt smoke is large, resulting in a decrease in the asphalt smoke removal efficiency of the electric tar collector.

[0004] In addition, the existing graphitization furnaces are usually fixed. If flue gas is to be collected and treated, a flue gas collection device needs to be installed above each graphitization furnace. Usually, there are many graphitization furnaces in a factory area. If a flue gas collection device is installed above each graphitization furnace, the cost will be high. Therefore, traditional graphitization furnaces are usually not equipped with flue gas collection and treatment devices, which leads to serious environmental pollution. Summary of the invention

[0005] In view of this, it is necessary to provide a continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace to solve the technical problems that the asphalt tar collected by the electric tar precipitator adheres to the wall of the equipment and cannot be discharged, thereby clogging the equipment and pipelines, affecting the operation of environmental protection equipment, the asphalt smoke removal efficiency is low, and the flue gas collection device needs to be set up separately for each graphitization furnace, resulting in high cost.

[0006] In order to achieve the above object, the present invention provides a continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace, comprising: A collecting mechanism, the collecting mechanism comprising a transfer track and a gas collecting hood, the transfer track is used for the graphitization furnace to move, and the gas collecting hood is arranged above a preset position of the transfer track; An asphalt removal mechanism, the asphalt removal mechanism comprising a spray tower and an electric tar collector, the inlet of the spray tower is connected to the outlet of the gas collecting hood, the inlet of the electric tar collector is connected to the outlet of the spray tower; and, The desulfurization mechanism comprises an induced draft fan and a desulfurization tower, the inlet of the induced draft fan is connected to the outlet of the electric tar precipitator, and the outlet of the induced draft fan is connected to the inlet of the desulfurization tower.

[0007] In some embodiments, the collection mechanism further includes an outlet pipe, one end of which is connected to the outlet of the gas collecting hood, and the other end of which is connected to the inlet of the spray tower.

[0008] In some embodiments, a plurality of first filter plates are fixed in the spray tower, and a plurality of first nozzles are fixed on each of the first filter plates; The asphalt removal mechanism further includes a first water pool and a submersible pump. The inlet of the submersible pump is connected to the first water pool, and the outlet of the submersible pump is connected to the inlet of each of the first nozzles.

[0009] In some embodiments, a first partition is provided in the first water pool, a plurality of first filter holes are provided on the first partition, the first partition divides the first water pool into a first left water pool and a first right water pool, the discharge port of the spray tower is located above the first left water pool, and the inlet of the submersible pump is connected to the first right water pool.

[0010] In some embodiments, the inlet of the electric tar collector is connected to the outlet of the spray tower via a first connecting pipe.

[0011] In some embodiments, a plurality of second filter plates are fixed in the desulfurization tower, and a plurality of second nozzles are fixed on each of the second filter plates; The desulfurization mechanism also includes a second water tank and a liquid pump. The second water tank is used to load lime slurry. The inlet of the liquid pump is connected to the second water tank, and the outlet of the liquid pump is connected to the inlet of each of the second nozzles.

[0012] In some embodiments, a second partition is provided in the second water tank, a plurality of second filter holes are opened on the second partition, the second partition divides the second water tank into a second left water tank and a second right water tank, the discharge port of the desulfurization tower is located above the second left water tank, and the inlet of the liquid pump is connected to the second right water tank.

[0013] In some embodiments, the desulfurization mechanism further includes a dust collector, and an inlet of the dust collector is connected to an outlet of the desulfurization tower.

[0014] In some embodiments, the inlet of the dust collector is connected to the outlet of the desulfurization tower via a second connecting pipe.

[0015] In some embodiments, a demister is provided at the outlet of the desulfurization tower.

[0016] Compared with the prior art, the technical solution proposed in the present invention has the following beneficial effects: each graphitization furnace is moved to the bottom of the gas collecting hood by a transfer track, so that there is no need to set up a flue gas collection device for each graphitization furnace, thereby reducing production costs. In addition, by pre-treating the waste gas by spraying and humidifying the waste gas through a spray tower, the resistivity of the asphalt fume can be reduced and the asphalt fume removal efficiency can be improved. At the same time, the viscosity of the asphalt tar collected by the electric tar precipitator is reduced, which can improve the fluidity of the asphalt tar, prevent the asphalt tar from clogging the equipment and pipelines, and improve the stability of the operation of the environmental protection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a device for treating continuous smoke and sulfur exhaust waste gas for a graphitization furnace provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the collection mechanism in FIG. Figure 3 yes Figure 1 A schematic diagram of the structure of the asphalt removal mechanism; Figure 4 yes Figure 1 A schematic diagram of the structure of the desulfurization mechanism; In the figure: 1-collecting mechanism, 11-transfer track, 12-gas collecting hood, 13-export pipe, 2-asphalt removal mechanism, 21-spray tower, 211-first filter plate, 212-first nozzle, 213-drainage port, 22-electric tar collector, 23-first water tank, 231-first partition plate, 232-first left water tank, 233-first right water tank, 24-submersible pump, 25-first connecting pipe, 3-desulfurization mechanism, 31-induced draft fan, 32-desulfurization tower, 321-second filter plate, 322-second nozzle, 33-second water tank, 34-liquid pump, 35-dust collector, 36-second connecting pipe, 37-demister, 4-graphitization furnace. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are 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, but are not used to limit the scope of the present invention.

[0019] Please refer to Figure 1 The present invention provides a continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace, comprising a collecting mechanism 1, an asphalt removal mechanism 2 and a desulfurization mechanism 3.

[0020] The collecting mechanism 1 includes a transfer track 11 and a gas collecting hood 12 . The transfer track 11 is used for the graphitization furnace 4 to move, and the gas collecting hood 12 is arranged above a preset position of the transfer track 11 .

[0021] The asphalt removal mechanism 2 includes a spray tower 21 and an electric tar collector 22 . The inlet of the spray tower 21 is connected to the outlet of the gas collecting hood 12 , and the inlet of the electric tar collector 22 is connected to the outlet of the spray tower 21 .

[0022] The desulfurization mechanism 3 includes an induced draft fan 31 and a desulfurization tower 32 . The inlet of the induced draft fan 31 is connected to the outlet of the electric tar precipitator 22 , and the outlet of the induced draft fan 31 is connected to the inlet of the desulfurization tower 32 .

[0023] When in use, the material to be graphitized is loaded into the graphitization furnace 4, and then the graphitization furnace 4 is moved along the transfer track 11 to the bottom of the gas collecting hood 12, and then the graphitization furnace 4 is powered on, and the exhaust gas generated during the operation of the graphitization furnace 4 is collected by the gas collecting hood 12, and the collected exhaust gas enters the spray tower 21 for spray humidification pretreatment to remove most of the particulate matter in the exhaust gas and reduce the resistivity of the asphalt smoke. The exhaust gas after humidification pretreatment enters the electric tar precipitator 22, and the electric tar precipitator 22 filters the asphalt tar in the exhaust gas. Then the exhaust gas is introduced into the desulfurization tower 32 by the induced draft fan 31 to desulfurize the exhaust gas.

[0024] The technical solution provided by the present invention moves each graphitization furnace 4 through the transfer track 11, so that each graphitization furnace 4 is moved to the bottom of the gas collecting hood 12 respectively, so that there is no need to set up a flue gas collection device separately for each graphitization furnace, thereby reducing the production cost. In addition, by pre-treating the waste gas by spraying and humidifying the waste gas through the spray tower 2, the resistivity of the asphalt fume can be reduced and the asphalt fume removal efficiency can be improved. At the same time, the viscosity of the asphalt tar collected by the electric tar precipitator 22 is reduced, which can improve the fluidity of the asphalt tar, prevent the asphalt tar from clogging the equipment and pipelines, and improve the stability of the operation of the environmental protection equipment.

[0025] Please refer to Figure 1 and Figure 2 In a preferred embodiment, the collecting mechanism 1 further includes an outlet pipe 13 , one end of which is connected to the outlet of the gas collecting hood 12 , and the other end of which is connected to the inlet of the spray tower 21 .

[0026] Please refer to Figure 1 and Figure 3 In a preferred embodiment, a plurality of first filter plates 211 are fixed in the spray tower 21, and a plurality of first nozzles 212 are fixed on each of the first filter plates 211; the asphalt removal mechanism 2 also includes a first water tank 23 and a submersible pump 24, the inlet of the submersible pump 24 is connected to the first water tank 23, and the outlet of the submersible pump 24 is connected to the inlet of each of the first nozzles 212.

[0027] Please refer to Figure 1 and Figure 3 In a preferred embodiment, a first partition 231 is provided in the first water pool 23, and a plurality of first filter holes are opened on the first partition 231. The first partition 231 divides the first water pool 23 into a first left water pool 232 and a first right water pool 233. The discharge port 213 of the spray tower 21 is located above the first left water pool 232, and the inlet of the submersible pump 24 is connected to the first right water pool 233. When in use, the submersible pump 24 draws the water in the first right water tank 233 to each first nozzle 212, and each first nozzle 212 sprays the water downward, which comes into countercurrent contact with the rising exhaust gas in the spray tower 21, thereby settling the particles in the exhaust gas and increasing the humidity of the exhaust gas. The water is then discharged from the drain port 213 of the spray tower 21 and falls into the first left water tank 232. The water enters the first right water tank 233 after being filtered through the first partition 231, forming a cycle. It should be understood that the first right water tank 233 needs to be replenished with water regularly, and at the same time, the first left water tank 232 needs to be cleaned regularly.

[0028] Please refer to Figure 1 and Figure 3 In a preferred embodiment, the inlet of the electric tar collector 22 is connected to the outlet of the spray tower 21 via a first connecting pipe 25 .

[0029] Please refer to Figure 1 and Figure 4 In a preferred embodiment, a plurality of second filter plates 321 are fixed in the desulfurization tower 32, and a plurality of second nozzles 322 are fixed on each of the second filter plates 321; the desulfurization mechanism 3 also includes a second water tank 33 and a liquid pump 34, the second water tank 33 is used to load lime slurry, the inlet of the liquid pump 34 is connected to the second water tank 33, and the outlet of the liquid pump 34 is connected to the inlet of each of the second nozzles 322.

[0030] Please refer to Figure 1 and Figure 4 In a preferred embodiment, a second partition 331 is provided in the second water tank 33, and a plurality of second filter holes are opened on the second partition 331. The second partition 331 divides the second water tank 33 into a second left water tank 332 and a second right water tank 333. The discharge port of the desulfurization tower 32 is located above the second left water tank 332, and the inlet of the liquid pump 34 is connected to the second right water tank 333.

[0031] When in use, the liquid pump 34 draws the lime slurry in the second right water tank 333 to each second nozzle 322 and sprays it downward, countercurrently contacting the rising exhaust gas in the desulfurization tower 32, and the sulfur dioxide in the flue gas reacts chemically with the calcium oxide (lime desulfurizer) in the lime slurry and the oxidizing air blown in to be removed, and the final reaction product is gypsum. The liquid after the reaction is discharged through the drain port of the desulfurization tower 32 and enters the second left water tank 332. The liquid in the second left water tank 332 is filtered by the second partition plate 331 and enters the second right water tank 333 for recycling.

[0032] Please refer to Figure 1 and Figure 4 In a preferred embodiment, the desulfurization mechanism 3 further includes a dust collector 35 , and the inlet of the dust collector 35 is connected to the outlet of the desulfurization tower 32 .

[0033] Please refer to Figure 1 and Figure 4 In a preferred embodiment, the inlet of the dust collector 35 is connected to the outlet of the desulfurization tower 32 via a second connecting pipe 36 .

[0034] Please refer to Figure 1 and Figure 4 In a preferred embodiment, a demister 37 is provided at the outlet of the desulfurization tower 32, and the demister 37 can remove fine droplets in the flue gas after desulfurization.

[0035] In order to better understand the present invention, the following Figure 1-Figure 4 The working process of the continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace provided by the present invention is described in detail: when in use, the material to be graphitized is loaded into the graphitization furnace 4, and then the graphitization furnace 4 is moved along the transfer track 11, so that the graphitization furnace 4 is moved to the bottom of the gas collecting hood 12, and then the graphitization furnace 4 is powered on, and the waste gas generated during the operation of the graphitization furnace 4 is collected by the gas collecting hood 12, and the collected waste gas enters the spray tower 21 for spray humidification pretreatment to remove most of the particulate matter in the waste gas and reduce the resistivity of the asphalt smoke. The waste gas after humidification pretreatment enters the electric tar precipitator 22, and the electric tar precipitator 22 filters the asphalt tar in the waste gas. Then the waste gas is introduced into the desulfurization tower 32 by the induced draft fan 31 to desulfurize the waste gas.

[0036] The technical solution provided by the present invention moves each graphitization furnace 4 through the transfer track 11, so that each graphitization furnace 4 is moved to the bottom of the gas collecting hood 12 respectively, so that there is no need to set up a flue gas collection device separately for each graphitization furnace, thereby reducing the production cost. In addition, by pre-treating the waste gas by spraying and humidifying the waste gas through the spray tower 2, the resistivity of the asphalt fume can be reduced and the asphalt fume removal efficiency can be improved. At the same time, the viscosity of the asphalt tar collected by the electric tar precipitator 22 is reduced, which can improve the fluidity of the asphalt tar, prevent the asphalt tar from clogging the equipment and pipelines, and improve the stability of the operation of the environmental protection equipment.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace, characterized in that: include: A collecting mechanism, the collecting mechanism comprising a transfer track and a gas collecting hood, the transfer track is used for the graphitization furnace to move, and the gas collecting hood is arranged above a preset position of the transfer track; An asphalt removal mechanism, the asphalt removal mechanism comprising a spray tower and an electric tar collector, the inlet of the spray tower is connected to the outlet of the gas collecting hood, the inlet of the electric tar collector is connected to the outlet of the spray tower; and, The desulfurization mechanism comprises an induced draft fan and a desulfurization tower, the inlet of the induced draft fan is connected to the outlet of the electric tar precipitator, and the outlet of the induced draft fan is connected to the inlet of the desulfurization tower.

2. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1 is characterized in that: The collecting mechanism further comprises an outlet pipe, one end of which is communicated with the outlet of the gas collecting hood, and the other end of which is communicated with the inlet of the spray tower.

3. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1 is characterized in that: A plurality of first filter plates are fixed in the spray tower, and a plurality of first nozzles are fixed on each of the first filter plates; The asphalt removal mechanism further includes a first water pool and a submersible pump. The inlet of the submersible pump is connected to the first water pool, and the outlet of the submersible pump is connected to the inlet of each of the first nozzles.

4. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 3 is characterized in that: A first partition is provided in the first water pool, a plurality of first filter holes are provided on the first partition, and the first partition divides the first water pool into a first left water pool and a first right water pool. The discharge port of the spray tower is located above the first left water pool, and the inlet of the submersible pump is connected to the first right water pool.

5. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1, characterized in that: The inlet of the electric tar collector is connected to the outlet of the spray tower via a first connecting pipe.

6. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1, characterized in that: A plurality of second filter plates are fixed in the desulfurization tower, and a plurality of second nozzles are fixed on each of the second filter plates; The desulfurization mechanism also includes a second water tank and a liquid pump. The second water tank is used to load lime slurry. The inlet of the liquid pump is connected to the second water tank, and the outlet of the liquid pump is connected to the inlet of each of the second nozzles.

7. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 6, characterized in that: A second partition is arranged in the second water tank, a plurality of second filter holes are opened on the second partition, and the second partition divides the second water tank into a second left water tank and a second right water tank. The discharge port of the desulfurization tower is located above the second left water tank, and the inlet of the liquid pump is connected with the second right water tank.

8. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1, characterized in that: The desulfurization mechanism further includes a dust collector, and the inlet of the dust collector is connected to the outlet of the desulfurization tower.

9. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 8, characterized in that: The inlet of the dust collector is connected to the outlet of the desulfurization tower via a second connecting pipe.

10. The continuous smoke and sulfur exhaust waste gas treatment device for a graphitization furnace according to claim 1, characterized in that: The outlet of the desulfurization tower is provided with a demister.

Images