Tail gas pipeline anti-blocking system

Abstract

The utility model belongs to the technical field of tail gas treatment, and discloses a tail gas pipeline anti-blocking system which comprises a filtering device, a cooling device and an anti-blocking device. The filtering device comprises a first shell and a filtering structure, and the filtering structure is arranged in the first shell. The cooling device is arranged at the rear end of the filtering device in the tail gas flowing direction and comprises a second shell and a cooler, the second shell is communicated with the first shell, the cooler is arranged in the second shell, and a gas outlet of the second shell is communicated with the tail gas pipeline. The anti-blocking device comprises a heater which is arranged on the tail gas pipeline. According to the tail gas pipeline anti-blocking system, discharged tail gas can be cleaned, and environment protection is facilitated; smoothness of a tail gas pipeline can be guaranteed, and dangerous conditions such as pipeline breakage caused by rising of internal pressure of a system due to unsmooth tail gas emission are avoided; and the tail gas pipeline can be automatically cleaned without stopping production for manual cleaning, so that the production efficiency is improved, the labor cost is reduced, and the personal health of workers is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas treatment technical field especially relates to a tail gas pipeline anti -blocking system. BACKGROUND

[0002] Artificial graphite is an important negative material, is widely used in lithium ion battery and other fields, its preparation process will produce a large amount of tail gas, and the tail gas contains a variety of harmful substances, such as dust, sulfur dioxide, organic matter, heavy metal and so on, has great harm to the environment and human health. The content and species of these substances can change due to different production processes and raw materials, resulting in the complexity and variability of the composition of tail gas.

[0003] Due to the different physical and chemical properties of different components in the tail gas, in the continuous production process of graphite negative electrode, viscous gelatinous substances are formed, which will gradually accumulate in the tail gas discharge pipeline over time, causing tail gas to be unable to be discharged normally, affecting the exhaust effect of the tail gas pipeline, not only leading to the quality of the material to fluctuate, but also causing the pressure in the system to rise, causing pipeline rupture and other safety accidents. At present, regular shutdown is needed for manual cleaning of the tail gas pipeline, which affects production efficiency and endangers personal health.

[0004] Therefore, there is an urgent need for a tail gas pipeline anti-blocking system to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a tail gas pipeline anti-blocking system, which can automatically process and dredge the tail gas pipeline to prevent the tail gas pipeline from being blocked.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A tail gas pipeline anti-blocking system is provided, comprising:

[0008] A filtering device, the filtering device comprises a first shell and a filtering structure, the filtering structure is arranged in the first shell;

[0009] A cooling device, the cooling device is arranged at the rear end of the filtering device in the tail gas flow direction, the cooling device comprises a second shell and a cooler, the second shell is communicated with the first shell, the cooler is arranged in the second shell, and the gas outlet of the second shell is communicated with the tail gas pipeline;

[0010] A blocking prevention device, the blocking prevention device comprises a heater, and the heater is arranged on the tail gas pipeline.

[0011] As an optional scheme of the tail gas pipeline anti-blocking system, the anti-blocking device further comprises a gas agitator connected to the tail gas pipeline.

[0012] As an optional scheme of the tail gas pipeline anti-blocking system, the anti-blocking device further comprises a feeding mechanism connected to the tail gas pipeline.

[0013] As an optional scheme of the tail gas pipeline anti-blocking system, the filter device further comprises a first collector arranged at the bottom of the first shell.

[0014] As an optional scheme of the tail gas pipeline anti-blocking system, the first collector comprises a first hopper connected to the first shell and a first collecting valve arranged at the bottom of the first hopper.

[0015] As an optional scheme of the tail gas pipeline anti-blocking system, the cooling device further comprises a second collector arranged at the bottom of the second shell.

[0016] As an optional scheme of the tail gas pipeline anti-blocking system, the tail gas pipeline anti-blocking system further comprises a first cleaning device connected to the filter device, and the first cleaning device is used for cleaning the filter structure.

[0017] As an optional scheme of the tail gas pipeline anti-blocking system, the first cleaning device comprises a first detection element and a first cleaning mechanism, the first detection element is signal connected with the first cleaning mechanism, and the first detection element is connected to the filter structure.

[0018] As an optional scheme of the tail gas pipeline anti-blocking system, the tail gas pipeline anti-blocking system further comprises a second cleaning device connected to the cooling device, and the second cleaning device is used for cleaning the cooler.

[0019] As an optional scheme of the tail gas pipeline anti-blocking system, the second cleaning device comprises a second detection element and a second cleaning mechanism, the second detection element is signal connected with the second cleaning mechanism, and the second detection element is connected to the gas outlet.

[0020] The utility model discloses the beneficial effect:

[0021] The utility model provides a kind of tail gas pipeline anti-blocking system, tail gas passes through first shell, second shell and tail gas pipeline in turn and discharges.The filter structure is arranged in first shell, can remove large particle dust and leaked negative electrode material impurities in tail gas, realize preliminary tail gas filtration, reduce the large particle impurities in tail gas that can cause tail gas pipeline blockage, prevent its subsequent accumulation in tail gas pipeline.Cooler is arranged in second shell, the temperature in second shell is reduced below condensation temperature by cooler, so that tar component in tail gas condenses in second shell, further remove the impurities in tail gas that can condense in tail gas pipeline.Heater is arranged on tail gas pipeline, so that tail gas pipeline can be kept at preset temperature, prevent residual tar component in tail gas from cooling in tail gas pipeline, avoid tar from condensing into block in pipeline inner wall due to temperature fluctuation, prevent tail gas pipeline from blocking.The tail gas pipeline anti-blocking system can clean and discharge tail gas, is conducive to protecting environment;Can guarantee the smoothness of tail gas pipeline, avoid tail gas emission not smooth, cause system internal pressure to rise, cause pipeline rupture and other dangerous conditions;It can also automatically clean pipeline, without stopping production for manual cleaning, improve production efficiency, reduce labor cost, ensure the personal health of worker. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the schematic diagram of tail gas pipeline anti-blocking system provided by the utility model.

[0023] In the figure:

[0024] 100, filter device;110, first shell;120, filter structure;130, first collector;131, first hopper;132, first collection valve;

[0025] 200, cooling device;210, second shell;220, cooler;230, second collector;231, second hopper;232, second collection valve;

[0026] 300, anti-blocking device;310, heater;320, gas agitator;330, feeding mechanism;

[0027] 400, first cleaning device;410, first detection element;420, first cleaning mechanism;

[0028] 500, second cleaning device;510, second detection element;520, second cleaning mechanism. DETAILED DESCRIPTION

[0029] The utility model will be described further in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0033] As Figure 1As shown, the tail gas pipeline anti-blocking system of the embodiment includes a filtering device 100, a cooling device 200 and an anti-blocking device 300. The filtering device 100 includes a first shell 110 and a filtering structure 120, and the filtering structure 120 is arranged in the first shell 110. The cooling device 200 is arranged at the rear end of the filtering device 100 in the tail gas flow direction, and the cooling device 200 includes a second shell 210 and a cooler 220, the second shell 210 is in communication with the first shell 110, the cooler 220 is arranged in the second shell 210, and the gas outlet of the second shell 210 is in communication with the tail gas pipeline. The anti-blocking device 300 includes a heater 310 arranged on the tail gas pipeline. The tail gas passes through the first shell 110, the second shell 210 and the tail gas pipeline in sequence and is then discharged.

[0034] Based on the above design, by arranging the filtering structure 120 in the first shell 110, the large particle dust and the leaked negative electrode material impurities in the tail gas can be removed, the preliminary tail gas filtration is realized, and the large particle impurities in the tail gas which are easy to cause the tail gas pipeline to be blocked are reduced, thereby preventing the subsequent accumulation of the large particle impurities in the tail gas pipeline.

[0035] In the embodiment, the filtering structure 120 is arranged as a metal filter screen, and different filtering size metal filter screens can be replaced according to different production lines, so as to improve the filtering precision of the filtering structure 120 and prevent the accumulation of large particle impurities in the tail gas pipeline. In some other embodiments, the filtering structure 120 can also be arranged as filter cotton and the like, which will not be described here.

[0036] As preferred, the filtering structure 120 can be arranged in multiple layers, such as two layers, three layers, four layers and the like, and the filter hole size of the multiple layers of filtering structure 120 can gradually decrease along the tail gas flow direction, so as to gradually improve the filtering precision and improve the filtering effect.

[0037] It can be understood that the cooler 220 is arranged in the second shell 210, the temperature in the second shell 210 is reduced to below the condensation temperature of the tar component by the cooler 220, the tar component in the tail gas is condensed in the second shell 210, and the impurities in the tail gas which are easy to condense in the tail gas pipeline are further removed.

[0038] In the embodiment, an indirect cooling mode is adopted, the temperature of the cooler 220 is reduced to below 120 degrees Celsius by circulating water or other cooling medium, and part of the gaseous tar in the tail gas can be condensed into liquid state, so as to facilitate the subsequent collection of the tar.

[0039] Further, the heater 310 is arranged on the tail gas pipeline, so that the tail gas pipeline can be kept at a preset temperature, the residual tar component in the tail gas is prevented from being cooled in the tail gas pipeline, the tar is prevented from being condensed into blocks on the inner wall of the pipeline due to temperature fluctuation, and the blocking of the tail gas pipeline is prevented.

[0040] The tail gas pipeline anti-blocking system can filter and clean the tail gas discharged by the reaction, which is conducive to protecting the environment, can ensure the smoothness of the tail gas pipeline, avoid poor tail gas discharge, thereby causing the pressure in the system to rise and causing pipeline rupture and other dangerous situations, and can automatically clean the pipeline without stopping production for manual cleaning, thereby improving production efficiency, reducing labor costs, and ensuring the personal health of workers.

[0041] Further, the filtering device 100 further comprises a first collector 130, which is arranged at the bottom of the first shell 110 and used for collecting large impurity particles filtered out by the filtering structure 120.

[0042] Specifically, the first collector 130 comprises a first hopper 131 and a first collection valve 132, the first hopper 131 is connected to the first shell 110, the first hopper 131 has a conical structure, the radial dimension thereof gradually decreases from top to bottom, the first hopper 131 is provided with a first discharge port at the bottom, and the first collection valve 132 is arranged at the first discharge port and used for controlling the opening and closing of the first discharge port, thereby facilitating the periodic cleaning of the impurities accumulated in the first hopper 131.

[0043] Further, the tail gas pipeline anti-blocking system further comprises a first cleaning device 400, which is connected to the filtering device 100 and used for cleaning the filtering structure 120 to prevent the filtering structure 120 from losing its function or having its working capacity reduced due to the accumulation of impurity particles.

[0044] Specifically, the first cleaning device 400 comprises a first detection element 410 and a first cleaning mechanism 420, the first detection element 410 is signal-connected to the first cleaning mechanism 420, the first detection element 410 is connected to the filtering structure 120 and used for detecting whether the filtering structure 120 needs to be cleaned, and when the first detection element 410 determines that the filtering structure 120 needs to be cleaned, the first cleaning mechanism 420 can be controlled to be started to clean. In this embodiment, the first detection element 410 is arranged as a differential pressure sensor and can measure the pressure difference between the front end and the rear end of the filtering structure 120, and the first cleaning mechanism 420 is arranged as a back-blowing mechanism and can blow air to the filtering structure 120 in the direction opposite to the flow direction of the tail gas, when the pressure difference between the front end and the rear end of the filtering structure 120 exceeds a certain range, the back-blowing mechanism acts to blow the filtering structure 120 with 0.3 MPa-0.6 MPa compressed gas, the blowing time is set to 5-15 minutes, the filtering structure 120 is cleaned, and the blown-off impurity particles can be collected by the first collector 130 and periodically recovered.

[0045] Further, the cooling device 200 further comprises a second collector 230, which is arranged at the bottom of the second shell 210 and used for collecting the tar condensed and liquefied from the tail gas after cooling.

[0046] Specifically, the second collector 230 comprises a second hopper 231 and a second collecting valve 232. The second hopper 231 is connected to the second shell 210 and has a tapered structure with a gradually decreasing radial dimension from top to bottom. The second hopper 231 is provided with a second discharge port at the bottom, and the second collecting valve 232 is arranged at the second discharge port and used for controlling the opening and closing of the second discharge port, so as to facilitate the periodic cleaning of the liquid tar accumulated in the second hopper 231.

[0047] Further, the tail gas pipeline anti-blocking system further comprises a second cleaning device 500 connected to the cooling device 200, which is used for cleaning the cooler 220 and preventing the condensation of too much tar on the cooler 220, thereby affecting the refrigeration effect.

[0048] Specifically, the second cleaning device 500 comprises a second detection element 510 and a second cleaning mechanism 520. The second detection element 510 is signal-connected to the second cleaning mechanism 520. The second detection element 510 is connected to the gas outlet and used for detecting whether the gas outlet is unblocked. When the second detection element 510 detects that the gas outlet is blocked, the second detection element 510 can control the second cleaning mechanism 520 to clean the cooler 220, thereby preventing the liquefied tar from blocking the cooling device 200 and ensuring that the tail gas can be normally discharged.

[0049] In this embodiment, the second detection element 510 is a first pressure sensor, and the second cleaning mechanism 520 is a flushing device. When the second detection element 510 detects that the air pressure in the cooling device 200 rises to a preset value, it indicates that the cooling device 200 is blocked. At this time, the second cleaning mechanism 520 is started to inject cleaning liquid into the cooling device 200. The cleaning liquid flows on the inner wall of the cooling device 200 at a flow rate of 1 m / s-2 m / s to flush the impurities attached to the inner wall. The waste liquid after cleaning is collected and discharged by the second collector 230.

[0050] As a preferred, the second cleaning mechanism 520 can be started periodically to clean the cooling device 200, for example, with a periodic cleaning period of 8-10 hours, so as to clean the gradually accumulated impurities in time, prevent the blocking of the cooling device 200, and ensure the smooth discharge of the tail gas.

[0051] Optionally, the cooling device 200 can be provided with multiple cooling branches, for example, two, three, four, etc., each of which is provided with a second detection element 510 and a second cleaning mechanism 520, so that when one or several cooling branches are blocked, at least one cooling branch can normally discharge the tail gas, avoiding the safety hazard caused by the increase of internal pressure due to the blockage of tail gas.

[0052] After the tail gas flows out of the cooling device 200, it enters the tail gas pipeline. The heater 310 can be in the form of an electric heating wire coil, which can heat the tail gas pipeline moderately. The heater 310 can maintain the temperature of the tail gas pipeline at 300-500℃, preventing the temperature of the residual tar components in the tail gas from decreasing and causing condensation and blockage.

[0053] Further, the anti-blocking device 300 further comprises a gas agitator 320 connected to the inside of the tail gas pipeline, which can cause the tail gas in the pipeline to produce turbulent flow while maintaining the movement speed of the tail gas in the pipeline, so that the tiny impurities in the tail gas are difficult to adhere to the wall, avoiding the deposition of residual impurities on the wall. Optionally, the gas agitator 320 can be in the form of a rotating blade, which is simple in structure and saves cost.

[0054] Further, the anti-blocking device 300 further comprises a material adding mechanism 330 connected to the tail gas pipeline, which is used to periodically add anti-blocking agent to the tail gas pipeline. The amount of anti-blocking agent added can be automatically controlled according to the flow and composition of the tail gas. For example, the anti-blocking agent can be added periodically every month, which can reduce the viscosity of tar and other impurities and further prevent blockage.

[0055] In this embodiment, the tail gas pipeline anti-blocking system further comprises a control device, which can be a centralized or distributed controller. For example, the controller can be a single piece or multiple pieces of single-chip structure, or can be controlled by a PLC. The control device can run a control program to control and adjust the first cleaning device 400, the second cleaning device 500, the material adding mechanism 330, etc. to realize their functions.

[0056] Optionally, the control device further comprises a temperature sensor and a second pressure sensor connected to the tail gas pipeline, which can monitor the temperature and pressure of the tail gas in real time and feed back to the control device to adjust the heating power and air flow rate, so as to ensure that the viscous components in the tail gas remain in a flowing state while avoiding excessive pressure loss.

[0057] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A tail gas conduit anti-plugging system, characterized in that, The application relates to a tail gas pipeline anti-blocking system. The tail gas pipeline anti-blocking system comprises a filtering device (100), a cooling device (200) and a blocking prevention device (300). The filtering device (100) comprises a first shell (110) and a filtering structure (120), and the filtering structure (120) is arranged in the first shell (110). The cooling device (200) is arranged at the rear end of the filtering device (100) in the tail gas flow direction, and comprises a second shell (210) and a cooler (220).

2. The tailpipe anti-clogging system of claim 1, wherein, The second shell (210) is in communication with the first shell (110), and the cooler (220) is arranged in the second shell (210).

3. The tailpipe anti-clogging system of claim 1 or 2, wherein, The outlet of the second shell (210) is in communication with a tail gas pipeline.

4. The tailpipe anti-clogging system of claim 1, wherein, The blocking prevention device (300) comprises a heater (310) arranged on the tail gas pipeline.

5. The tailpipe anti-clogging system of claim 4, wherein, The blocking prevention device (300) further comprises a gas agitator (320) connected to the tail gas pipeline.

6. The tailpipe anti-clogging system of claim 1, wherein, The blocking prevention device (300) further comprises a feeding mechanism (330) connected to the tail gas pipeline.

7. The tailpipe anti-clogging system of claim 1, wherein, The filtering device (100) further comprises a first collector (130) arranged at the bottom of the first shell (110).

8. The tailpipe anti-clogging system of claim 7, wherein, The first collector (130) comprises a first hopper (131) connected to the first shell (110) and a first collecting valve (132) arranged at the bottom of the first hopper (131).

9. The tailpipe anti-clogging system of claim 1, wherein, The cooling device (200) further comprises a second collector (230) arranged at the bottom of the second shell (210).

10. The tailpipe anti-clogging system of claim 9, wherein, The tail gas pipeline anti-blocking system further comprises a first cleaning device (400) connected to the filtering device (100), and the first cleaning device (400) is used for cleaning the filtering structure (120). The first cleaning device (400) comprises a first detection element (410) and a first cleaning mechanism (420), and the first detection element (410) is in signal connection with the first cleaning mechanism (420). The first detection element (410) is connected to the filtering structure (120). The tail gas pipeline anti-blocking system further comprises a second cleaning device (500) connected to the cooling device (200), and the second cleaning device (500) is used for cleaning the cooler (220). The second cleaning device (500) comprises a second detection element (510) and a second cleaning mechanism (520), and the second detection element (510) is in signal connection with the second cleaning mechanism (520). The second detection element (510) is connected to the outlet.

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