Atmosphere furnace waste gas treatment system

Abstract

The utility model discloses an atmosphere furnace waste gas treatment system which comprises an atmosphere furnace and a treatment device connected to an exhaust port of the atmosphere furnace, the treatment device comprises a dust remover, and the treatment device further comprises a heat exchange box connected with the exhaust port of the atmosphere furnace and a temperature control box, a first water inlet, a first water outlet, a first air inlet and a first air outlet are formed in the heat exchange box, the first air inlet is connected with the exhaust port, a second water inlet and a second water outlet are formed in the temperature control box, a cooling part and a heating part are connected between the second water inlet and the second water outlet in parallel, and the first water outlet is communicated with the second water inlet; the first water inlet is communicated with the second water outlet, the dust remover is provided with a second air inlet and a second air outlet, and the first air outlet is communicated with the second air inlet. According to the utility model, the detection instrument can be effectively protected and the service life is prolonged; the detection accuracy is improved; the effective monitoring and improvement on the process are realized; and the system operation stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery material sintering equipment field especially relates to an atmosphere furnace waste gas treatment system. BACKGROUND

[0002] Atmosphere furnace is widely used in battery positive material sintering field, and the atmosphere environment in atmosphere furnace, including the moisture content and carbon dioxide concentration and other gas phase components, has a crucial influence on the quality, stability and performance of the final product of the whole process. For moisture, its content change in atmosphere furnace will affect the oxidation-reduction reaction process of the material. At the same time, the fluctuation of moisture content can also affect the uniformity of the temperature in the furnace, because the evaporation and condensation process of moisture will be accompanied by heat absorption and release, which can cause local temperature deviation, affect the uniformity of material heating in the furnace, and thus have adverse effects on the stability of the whole process. Carbon dioxide also plays an important role in atmosphere furnace process. The change of its concentration will affect the chemical reaction equilibrium in the furnace, and the change of carbon dioxide concentration can affect the oxidation-reduction state of carbon. In addition, the abnormal increase or decrease of carbon dioxide concentration may indicate that the atmosphere control system in the furnace has problems, such as gas supply ratio imbalance, poor furnace body sealing, etc. If these problems are not found and solved in time, it will cause deviation of the whole process and affect the consistency and stability of product quality. At present, when detecting the moisture and carbon dioxide of atmosphere furnace exhaust gas, the commonly used method is a relatively direct detection method, that is, the gas discharged from the atmosphere furnace exhaust port is directly introduced into the corresponding detection instrument for measurement. Although this direct detection method seems simple and direct, it has many serious drawbacks, which can easily damage the detection instrument and affect the normal development of detection work and effective monitoring and improvement of the process. SUMMARY

[0003] The utility model aims at providing an atmosphere furnace waste gas treatment system which can effectively protect the detection instrument and prolong the service life of the instrument.

[0004] In order to achieve the above object, the utility model adopts the technical scheme: an atmosphere furnace waste gas treatment system, it includes atmosphere furnace, the treatment device that is connected to the atmosphere furnace exhaust port, the treatment device includes dust remover, the treatment device still includes the heat exchange box that is connected with the exhaust port of atmosphere furnace and temperature control box, be equipped with first water inlet, first water outlet, first air inlet and first air outlet on the heat exchange box, the first air inlet is connected with the exhaust port, be equipped with second water inlet and second water outlet on the temperature control box, the second water inlet and second water outlet are connected with cooling part and heating part in parallel, the first water outlet with the second water inlet is linked together, the first water inlet with the second water outlet is linked together, be equipped with second air inlet and second air outlet on the dust remover, the first air outlet with the second air inlet is linked together, the temperature control box according to the temperature of the gas that the first air outlet discharges adjusts the temperature of water in heat exchange box, when the temperature of the gas that the first air outlet discharges is low, the second water inlet and heating part are connected and cooling part is disconnected, when the temperature of the gas that the first air outlet discharges is low, the second water inlet and cooling part are connected and heating part is disconnected.

[0005] Another embodiment, the heat exchange box includes heat exchange box body, the gas heat exchange pipe that is arranged in the heat exchange box body and extends in S type.

[0006] Another embodiment, the first air inlet and first air outlet are arranged at the front end and rear end of the gas heat exchange pipe respectively, the bending part of the gas heat exchange pipe is the bending point thereof, the bending point is divided into the front end bending point close to the first air inlet side and the rear end bending point close to the first air outlet side, all the rear end bending points and the first air outlet are connected through the communication pipe, and the temperature control electromagnetic valve is arranged on each communication position of the communication pipe and the gas heat exchange pipe respectively, the actual distance of the gas passing through the gas heat exchange pipe can be changed by adjusting the temperature control electromagnetic valve, and then the heat exchange time of the gas and the water in the box body is adjusted, so that the temperature of the gas discharged from the box body is adjusted.

[0007] Another embodiment, the temperature control electromagnetic valve is a three-position two-way valve, which is used for closing the gas circuit, or connecting the gas heat exchange pipe at the bending part, or connecting the gas heat exchange pipe at the bending part and the communication pipe downstream thereof.

[0008] Another embodiment, the dust remover is a bag type dust remover, which includes a dust removal box body divided into a clean gas chamber and a dust removal chamber, a back flushing dust removal mechanism arranged in the clean gas chamber, a material collecting barrel arranged at the bottom of the dust removal box body, and a gas hammer arranged on the side wall of the dust removal box body.

[0009] Another embodiment, the treatment device includes a temperature and humidity detector, which is provided with a third air inlet and a third air outlet, and the third air inlet is connected with the second air outlet.

[0010] In another embodiment, the processing device includes a vacuum pump, which has a fourth air inlet and a fourth air outlet, and the fourth air inlet is connected to the third air outlet.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: this utility model can effectively protect the testing instrument and extend its service life; improve the testing accuracy; realize effective monitoring and improvement of the process; and achieve high system operation stability. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] like Figure 1 As shown, the exhaust gas treatment system for the atmosphere furnace 0 includes an atmosphere furnace 0 and a treatment device connected to the exhaust port J of the atmosphere furnace 0. The treatment device includes a dust collector 3, a heat exchange box 1, a temperature control box 2, a temperature and humidity detector 4, and an air pump 5.

[0014] The heat exchange box 1 includes a heat exchange box body 11 and a gas heat exchange tube 12 that is arranged inside the heat exchange box body 11 and extends in an S-shape. The heat exchange box 1 is connected to the exhaust port J of the atmosphere furnace 0. The heat exchange box 1 is provided with a first water inlet 1A, a first water outlet 1B, a first air inlet 1C, a first air outlet 1D, a water filling port 1G, and a water drain port 1H. The first air inlet 1C is connected to the exhaust port. The temperature control box 2 is provided with a second water inlet 2A and a second water outlet 2B. A cooling section (the cooling section can be implemented using a heat exchange principle mechanism similar to that of a refrigerator, which is not the focus of this utility model and will not be described in detail here) and a heating section are connected in parallel between the second water inlet 2A and the second water outlet 2B. The heating section can be implemented by heating the water pipe with a resistance wire. The first water outlet 1B is connected to the second water inlet 2A, and the first water inlet 1A is connected to the second water outlet 2B. The temperature control box 2 adjusts the temperature of the water in the heat exchange box 1 according to the temperature of the gas discharged from the first gas outlet 1D. When the temperature of the gas discharged from the first gas outlet 1D is too low, the second water inlet 2A is connected to the heating part and disconnected from the cooling part.

[0015] The first gas inlet 1C and the first gas outlet 1D are respectively arranged at the front end and the rear end of the gas heat exchange pipe 12, the bending part of the gas heat exchange pipe 12 is a bending point, the bending point is divided into a front end bending point E close to the first gas inlet 1C side and a rear end bending point F close to the first gas outlet 1D side, all the rear end bending points F and the first gas outlet 1D are communicated through the communication pipe 13, and a temperature control electromagnetic valve 14 is arranged at each communication position of the communication pipe 13 and the gas heat exchange pipe 12. By adjusting the temperature control electromagnetic valve 14, the actual distance of the gas passing through the gas heat exchange pipe 12 can be changed, and then the heat exchange time of the gas and the water in the box is adjusted, so that the temperature of the gas discharged from the box is adjusted; the temperature control electromagnetic valve 14 is a three-position two-way valve, which is used to close the gas path, or connect the gas heat exchange pipe 12 at the bending part, or connect the gas heat exchange pipe 12 at the bending part and the communication pipe 13 downstream of the bending part.

[0016] By arranging a series of pretreatment devices such as the heat exchange box 1 and the temperature control box 2 between the atmosphere furnace 0 gas outlet and the detection instrument, the problem that the existing technology directly impacts the detection instrument with high-temperature gas and impurities, which causes the instrument to be easily damaged, is successfully solved. The heat exchange box 1 and the temperature control box 2 can accurately control the temperature of the cooled gas, so that it reaches a suitable range for the detection instrument to work, avoiding the interference of the detection result caused by the gas temperature being too high or too low (such as excessive cooling leading to crystallization and blocking of materials affecting the gas flow). At a suitable temperature, the detection process of the detection instrument based on a specific physical or chemical principle can be more accurately carried out, for example, the physical properties (density, viscosity, etc.) of the gas remain relatively stable, and the detection method based on the chemical reaction principle can also be carried out under normal reaction rate and equilibrium conditions, thereby greatly improving the accuracy of the detection result and more truly reflecting the actual content of the gas phase components such as moisture and carbon dioxide in the atmosphere furnace 0 gas.

[0017] The dust remover 3 is a bag-type dust remover 3, and the dust remover 3 is provided with a second gas inlet 3A and a second gas outlet 3B, and the first gas outlet 1D is communicated with the second gas inlet 3A. The dust remover 3 includes a dust removal box 31 divided into a clean gas chamber and a dust removal chamber, a back-blowing dust removal mechanism 32 arranged in the clean gas chamber, a material collecting barrel 34 arranged at the bottom of the dust removal box 31, and a gas hammer 33 arranged on the side wall of the dust removal box 31. The back-blowing dust removal mechanism 32 blows air to the cloth bag of the bag-type dust remover in the clean gas chamber to shake off the dust on the surface of the cloth bag on one side of the dust removal chamber, and the dust is shaken off into the material collecting barrel 34. The gas hammer 33 is used to shake off the accumulated dust on the side wall of the dust removal chamber, and the accumulated dust is shaken off into the material collecting barrel 34. The strong dust removal and impurity cleaning capacity of the dust remover 3 ensures that the purity of the gas entering the detection instrument is greatly improved. The reduction of impurities avoids the interference of the impurities on the gas diffusion path, sensor sensing and other aspects of the detection instrument, so that the detection signal can be accurately obtained, and the detection accuracy is further improved, providing reliable data support for process monitoring and improvement.

[0018] The temperature and humidity detector 4 is provided with a third air inlet 4A and a third air outlet 4B, and the third air inlet 4A is connected with the second air outlet 3B. The air pump 5 is provided with a fourth air inlet 5A and a fourth air outlet 5B, and the fourth air inlet 5A is connected with the third air outlet 4B. In the whole technical scheme, the air pump 5 is arranged to maintain the stable flow of the gas in the system. The air pump 5 ensures that the gas can pass through the heat exchange box 1, the dust collector 3 and other links in turn, and avoids the problems of too high or too low local pressure caused by poor gas flow. At the same time, the self-cleaning function (such as the cooperation of the air hammer and the air storage back flushing device) of the dust collector 3 can ensure that it always maintains good filtering effect during long time operation, and will not affect the gas flow due to impurity blockage. These measures jointly ensure the stable operation of the whole system, so that the detection work can be continuously and uninterruptedly carried out, and stable data source is provided for process monitoring.

[0019] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An atmosphere furnace exhaust gas treatment system comprising an atmosphere furnace, a treatment device connected to an exhaust port of the atmosphere furnace, the treatment device comprising a dust collector, characterized by: The processing device further comprises a heat exchange box connected with the exhaust port of the atmosphere furnace, and a temperature control box, the heat exchange box is provided with a first water inlet, a first water outlet, a first air inlet and a first air outlet, the first air inlet is connected with the exhaust port, the temperature control box is provided with a second water inlet and a second water outlet, the second water inlet and the second water outlet are connected in parallel with a cooling part and a heating part, the first water outlet is connected with the second water inlet, the first water inlet is connected with the second water outlet, the dust collector is provided with a second air inlet and a second air outlet, and the first air outlet is connected with the second air inlet.

2. The atmospheric furnace off-gas treatment system according to claim 1, characterized by: The heat exchange box comprises a heat exchange box body and a gas heat exchange pipe extending in an S shape in the heat exchange box body.

3. The atmospheric furnace off-gas treatment system according to claim 2, characterized by: The first air inlet and the first air outlet are respectively arranged at the front end and the rear end of the gas heat exchange pipe, the bending part of the gas heat exchange pipe is a bending point, the bending point is divided into a front end bending point close to the first air inlet and a rear end bending point close to the first air outlet, all the rear end bending points and the first air outlet are connected through a communication pipe, and a temperature control electromagnetic valve is arranged at each communication position of the communication pipe and the gas heat exchange pipe, the actual distance of the gas passing through the gas heat exchange pipe can be changed by adjusting the temperature control electromagnetic valve, and then the heat exchange time of the gas and the water in the box body is adjusted, so that the temperature of the gas discharged from the box body is adjusted.

4. The atmospheric furnace off-gas treatment system according to claim 3, characterized by: The temperature control electromagnetic valve is a three-position two-way valve, which is used to close the gas path, or connect the gas heat exchange pipe at the bending part, or connect the gas heat exchange pipe at the bending part and the communication pipe downstream of the gas heat exchange pipe.

5. The atmospheric furnace off-gas treatment system according to claim 1, characterized by: The dust collector is a bag type dust collector, which comprises a dust removal box body divided into a clean gas chamber and a dust removal chamber, a back flushing dust removal mechanism arranged in the clean gas chamber, a material collecting barrel arranged at the bottom of the dust removal box body, and a gas hammer arranged on the side wall of the dust removal box body.

6. The atmospheric furnace off-gas treatment system according to claim 1, characterized by: The processing device comprises a temperature and humidity detector, which is provided with a third air inlet and a third air outlet, and the third air inlet is connected with the second air outlet.

7. The atmospheric furnace off-gas treatment system according to claim 6, characterized by: The processing device comprises an air pump, which is provided with a fourth air inlet and a fourth air outlet, and the fourth air inlet is connected with the third air outlet.

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