A tail gas treatment system

Abstract

The utility model provides a kind of tail gas treatment system, it is related to furnace body tail gas treatment technical field, the tail gas treatment system includes: cooling component, filter component and spray blowing component, cooling component is used to cool process tail gas;Filter component is connected with the cooling component, for filtering solid material in process tail gas;The spray blowing component is connected with the filter component, for dust is discharged from the output end of tail gas treatment system;The tail gas treatment system of the utility model sets up spray blowing component, when pump is in non-working state, spray blowing component forms negative pressure in tail gas treatment system by output protection gas, dust in tail gas treatment system is output to plant waste disposal system under the action of negative pressure by the output end of tail gas treatment system. Since the dust deposited in tail gas treatment system is removed by spray blowing component, the working efficiency of tail gas treatment system is high, and the safety is strong.

Description

Technical Field

[0001] This utility model relates to the field of furnace exhaust gas treatment technology, and in particular to an exhaust gas treatment system. Background Technology

[0002] A tail gas treatment system is a device used to treat the process tail gas discharged from the furnace to meet emission requirements. Typically, the tail gas treatment system uses a pump to drive the process tail gas through pipelines and processes it through several steps to ultimately achieve the emission standards.

[0003] However, the process exhaust gas contains a large amount of dust. When the pump is not in operation, the dust will accumulate in the pipeline, causing blockage. This results in low efficiency in treating the process exhaust gas, and in severe cases, excessive blockage can even lead to an explosion, posing a safety hazard.

[0004] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an exhaust gas treatment system that is highly efficient and safe.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] This utility model provides an exhaust gas treatment system, comprising:

[0008] Cooling components are used to cool process exhaust gases;

[0009] A filter assembly, connected to a cooling assembly, is used to filter solid substances in process exhaust gas.

[0010] The jet cleaning assembly, connected to the filter assembly, is used to discharge dust from the output of the exhaust gas treatment system.

[0011] Optionally, it also includes a pump, the input of which is connected to the filter assembly, and the output of which is connected to the jetting assembly.

[0012] Optionally, it also includes an external waste discharge pipe and a tee pipe, the external waste discharge pipe being connected to the pump and the jetting assembly respectively through the tee pipe.

[0013] Optionally, the input end of the exhaust gas treatment system is configured to be connected to a vacuum chamber, and one or more exhaust gas treatment lines are provided between the vacuum chamber and the pump, and the cooling component and the filter component are provided on each of the exhaust gas treatment lines.

[0014] Optionally, the blowing assembly includes a protective gas source and a blowing switch. The protective gas source is used to store protective gas and is connected to a tee pipe via a connecting branch pipe. The blowing switch is located between the protective gas source and the tee pipe.

[0015] Optionally, the filter assembly includes a filter housing and a filter element disposed within the filter housing, with an inlet and an outlet provided on the filter housing.

[0016] Optionally, the filter assembly also includes a fastener, through which the filter element is detachably connected to the filter housing.

[0017] Optionally, the filter element is configured to be pleated, hollow, and contains a filter screen.

[0018] Optionally, a manual valve is also included, which is located between the cooling assembly and the filter assembly.

[0019] Optionally, it also includes a control module, a flow meter, and an automatic valve, with the control module electrically connected to the flow meter and the automatic valve respectively, and the automatic valve located between the filter assembly and the pump.

[0020] Compared with the prior art, this utility model brings the following technical effects:

[0021] This utility model's exhaust gas treatment system is equipped with a jet cleaning component. When the pump is not in operation, the jet cleaning component creates a negative pressure within the exhaust gas treatment system by outputting protective gas. Under this negative pressure, dust within the exhaust gas treatment system is discharged from the system's output end to the factory's waste treatment system. Because the dust deposited within the exhaust gas treatment system is removed by the jet cleaning component, the system boasts high efficiency and strong safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The diagram shows a schematic representation of the exhaust gas treatment system according to some embodiments of the present invention.

[0024] Figure 2 The diagram shows a schematic representation of the exhaust gas treatment system according to some embodiments of the present invention.

[0025] Figure 3 The diagram shows a schematic representation of the cooling assembly according to some embodiments of the present invention;

[0026] Figure 4 for Figure 3 A sectional view cut along axis AA;

[0027] Figure 5 A cross-sectional view of a filter assembly according to some embodiments of the present invention is shown;

[0028] Figure 6 A cross-sectional view of a filtering component according to some embodiments of the present invention is shown.

[0029] Explanation of key component symbols:

[0030] 100 - Vacuum chamber; 200 - Exhaust gas treatment system; 300 - Plant waste treatment system;

[0031] 10 - Pump; 11 - Tee pipe;

[0032] 20-Cooling assembly; 21-Cooling component; 211-Housing shell; 212-Inlet connector; 213-Outlet connector; 214-Cooling plate; 2141-Cooling hole; 22-Refrigeration component;

[0033] 30-Filter assembly; 31-Filter housing; 311-Inlet; 312-Outlet; 32-Filter element; 33-Filter screen; 34-Fixing component;

[0034] 40 - Purge assembly; 41 - Purge switch; 42 - Protective gas source;

[0035] 50 - External waste discharge pipe;

[0036] 61 - Manual valve; 62 - Automatic valve. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0039] Please see Figure 1This utility model provides an exhaust gas treatment system 200, which has an input end and an output end. The input end of the exhaust gas treatment system 200 is connected to a vacuum chamber 100, and the output end of the exhaust gas treatment system 200 is connected to a plant waste treatment system 300. The exhaust gas treatment system 200 is used to transfer the process exhaust gas in the vacuum chamber 100 to the plant waste treatment system 300, and to treat the process exhaust gas during the transfer process.

[0040] The vacuum chamber 100 is composed of vacuum equipment used to create a vacuum environment to draw in process tail gas from the furnace. The tail gas treatment system 200 further treats the process tail gas that has already passed through the tail gas treatment system 200.

[0041] The exhaust gas treatment system 200 includes a cooling component 20, a filter component 30, a pump 10, and an external exhaust pipe 50 connected in sequence.

[0042] An exhaust gas treatment line is provided between the vacuum chamber 100 and the pump 10, and the cooling component 20 and the filter component 30 are located on the same exhaust gas treatment line.

[0043] Pump 10 can switch between operating and non-operating states. In operating state, pump 10 drives the process exhaust gas from the input end of the exhaust gas treatment system 200 into the exhaust gas treatment system 200 and from the output end of the exhaust gas treatment system 200 out of the exhaust gas treatment system 200. In non-operating state, residual dust in the process exhaust gas will gradually accumulate inside the exhaust gas treatment system 200, causing blockage of the exhaust gas treatment system 200, and may even lead to an explosion.

[0044] To address the problem of dust accumulation clogging the interior of the exhaust gas treatment system 200, one specific embodiment of the exhaust gas treatment system 200 includes a jet blowing assembly 40. The jet blowing assembly 40 is connected to the output end of the pump 10 via a three-way pipe 11 and an external exhaust pipe 50, and is used to blow the dust inside the exhaust gas treatment system 200 out of the external exhaust pipe 50.

[0045] Specifically, the first input end of the three-way pipe 11 is connected to the output end of the pump 10, the second input end of the three-way pipe 11 is connected to the jetting assembly 40, and the output end of the three-way pipe 11 is connected to the peripheral waste discharge pipe 50. The protective gas enters the three-way pipe 11 through the second input end and enters the peripheral waste discharge pipe 50 through the output end of the three-way pipe 11.

[0046] The exhaust gas treatment system 200 of this invention is equipped with a jet cleaning assembly 40. When the pump 10 is not in operation, the jet cleaning assembly 40 creates a negative pressure within the exhaust gas treatment system 200 by outputting protective gas. Under the action of this negative pressure, the dust within the exhaust gas treatment system 200 is output from the output end of the exhaust gas treatment system 200 to the plant waste treatment system 300. Because the dust deposited within the exhaust gas treatment system 200 is removed by the jet cleaning assembly 40, the exhaust gas treatment system 200 has high working efficiency and strong safety.

[0047] In other words, the jet cleaning assembly 40 creates a pressure difference in the process exhaust gas path of the exhaust gas treatment system 200 by outputting protective gas, thereby forcing the dust from the high pressure at the input end (high pressure position) of the exhaust gas treatment system 200 to the output end (low pressure position) of the exhaust gas treatment system 200. In addition, the protective gas does not chemically react with the dust in the process exhaust gas, so there is no need to consider the reaction conditions between the protective gas and the dust, the amount of protective gas added, etc., making it simple and convenient to use.

[0048] The jetting component 40 is used to output protective gas, which is nitrogen. Nitrogen contains no moisture, effectively preventing dust from condensing into clumps when it comes into contact with water. It also does not chemically react with dust, exhibits high stability, and has low operating costs.

[0049] Specifically, the blowing assembly 40 is connected to the tee pipe 11 via a connecting branch pipe. The blowing assembly 40 includes a protective gas source 42 and a blowing switch 41. The protective gas source 42 is used to store protective gas. The blowing switch 41 is provided between the protective gas source 42 and the tee pipe 11. The blowing switch 41 can switch between open and closed states.

[0050] When pump 10 is not in operation, the blow-off switch 41 is turned on, and the blow-off assembly 40 is connected to the tee pipe 11, allowing the protective gas to enter the tee pipe 11 through the connecting branch pipe. When pump 10 is in operation, the blow-off switch 41 is turned off, and the blow-off assembly 40 and the pipeline for process exhaust gas flow are set up independently. That is to say, the protective gas in the blow-off assembly 40 cannot enter pump 10 and the external waste discharge pipe 50.

[0051] For example, the protective gas source 42 can be a steel cylinder with nitrogen storage function, and the blow switch 41 can be a handle or a knob.

[0052] Specifically, when pump 10 is in operation, the blow switch 41 disconnects the protective gas source 42 from the three-way pipe 11. The process exhaust gas in the vacuum chamber 100 flows sequentially along the cooling assembly 20, the filter assembly 30, the pump 10, and the external waste discharge pipe 50, ultimately entering the plant waste treatment system 300. The flow direction of the process exhaust gas and the flow direction of the protective gas are as follows: Figure 1 The direction indicated by the middle arrow.

[0053] In one specific embodiment, the input end of the cooling assembly 20 is connected to the vacuum chamber 100, and the output end of the cooling assembly 20 is connected to the filter assembly 30. The cooling assembly 20 is used to cool the process exhaust gas flowing through it.

[0054] Please see Figure 2 In one specific embodiment, several exhaust gas treatment lines are connected in parallel between the vacuum chamber 100 and the pump 10, and each exhaust gas treatment line is equipped with a cooling assembly 20 and a filter assembly 30. A manual valve 61 is provided between the cooling assembly 20 and the filter assembly 30, and an automatic valve 62 is provided between the filter assembly 30 and the pump 10.

[0055] The exhaust gas treatment device in this embodiment has several exhaust gas treatment lines connected in parallel, and each exhaust gas treatment line is equipped with a cooling component 20 and a filter component 30, which greatly improves the cooling and filtering capacity of the process exhaust gas.

[0056] Please see Figure 3 and Figure 4 The cooling assembly 20 includes a cooling element 21 and a refrigeration element 22, the refrigeration element 22 being used to cool the process exhaust gas flowing through the cooling element 21.

[0057] Specifically, the cooling component 21 includes a housing 211 and a cooling plate 214 disposed within the housing 211. The housing 211 is provided with an air inlet 212 and an air outlet 213. The air inlet 212 is connected to the vacuum chamber 100, and the air outlet 213 is connected to the filter assembly 30. Several cooling holes 2141 are formed on the cooling plate 214. The cooling component 22 can be a heat exchanger or a fan. The heat exchanger housing is disposed close to the cooling component 21 to exchange heat with the process exhaust gas inside the cooling component 21. The fan's exhaust direction is directed towards the cooling component 21 to cool the process exhaust gas inside the cooling component 21.

[0058] The cooling plate 214 divides the internal space of the housing into a first cavity and a second cavity, and the first cavity is connected to the second cavity through the cooling hole 2141.

[0059] By providing a cooling plate 214 inside the housing and opening cooling holes 2141 on the cooling plate 214, the cooling plate 214 can block the process exhaust gas from entering the cooling component 21, thereby extending the time of the process exhaust gas in the first cavity. The cooling component 22 has a longer time to cool the process exhaust gas in the first cavity, thereby improving the cooling efficiency of the cooling assembly 20.

[0060] In one embodiment, the filter assembly 30 is used to remove solid matter (such as particulate matter) from the process exhaust gas, thereby preventing the solid matter in the process exhaust gas from clogging the exhaust gas treatment pipeline.

[0061] Please see Figure 5 The filter assembly 30 includes a filter housing 31 and a filter element 32 disposed within the filter housing 31. The filter housing 31 has an inlet 311 and an outlet 312, which are substantially coaxial. Process exhaust gas enters the filter assembly 30 through the inlet 311, passes through the filter element 32, and finally exits the filter assembly 30 through the outlet 312. Solid substances in the process exhaust gas are filtered into the filter element 32. For the specific flow direction of the process exhaust gas in the filter assembly 30, please refer to [reference needed]. Figure 5 The direction of the arrow in the image.

[0062] The filter element 32 has several through holes inside, with one end of each through hole facing the inlet 311 and the other end facing the outlet 312. Process exhaust gas passes through the filter element 32 through these through holes. The cross-sectional diameter of the through holes is configured to block the diameter of particulate matter in the process exhaust gas, meaning that only the gaseous portion of the process exhaust gas is allowed to pass through the filter element 32.

[0063] Furthermore, the through holes can be configured to be independently set or interconnected. When the through holes are interconnected, the contact area between the filter element 32 and the process exhaust gas can be increased, thereby further improving the filtration effect of the filter element 32.

[0064] In other alternative embodiments, the inlet 311 and outlet 312 may also be staggered. For example, both the inlet 311 and outlet 312 may be located on the peripheral wall of the filter housing 31 and perpendicular to each other at the same height. Alternatively, both the inlet 311 and outlet 312 may be located on the peripheral wall of the filter housing 31 but at different heights. Or, the inlet 311 may be located at the top of the filter housing 31, and the outlet 312 may be located on the peripheral wall of the filter housing 31. Correspondingly, the through holes in the filter element 32 should be adaptively adjusted to accommodate changes in the position of the inlet 311 and outlet 312.

[0065] In one specific embodiment, the filter element 32 is configured as a pleated shape. That is, the surface of the filter element 32 is a non-flat surface with irregular protrusions and pits. The pleated filter element 32 can increase the contact area with the process exhaust gas, thereby improving the filtration capacity for solid substances in the process exhaust gas.

[0066] Please see Figure 6 For the flow direction of the process exhaust gas, please refer to [reference needed]. Figure 6 The arrow in the image indicates the direction of the filter. In one specific embodiment, the filter assembly 30 further includes a fixing member 34, through which the filter element 32 is detachably disposed within the filter housing 31.

[0067] When the filter element 32 is not in operation, the user can remove the fixing piece 34 and take the filter element 32 out of the filter assembly 30. This allows the solid matter in the exhaust gas inside the filter element 32 to be cleaned, preventing the filter element 32 from becoming clogged due to excessive solid matter inside the filter element 32 after long-term use of the filter assembly 30.

[0068] Specifically, the fixing member 34 is an insert rod with a baffle at one end, the filter housing 31 is provided with a mounting seat, the insert rod passes through the filter element 32 and the mounting seat, and the baffle abuts against one side of the filter element 32; and the insert rod is pressed with a nut to install the insert rod on the mounting seat.

[0069] When the filter assembly 30 is not in operation, the insert rod can be pulled out of the filter element 32 by removing the nut, and the filter element 32 can be removed from the housing 211.

[0070] In other embodiments, the fastener 34 can be a snap fastener, with a corresponding slot on the filter element 32. The connection between the snap fastener and the slot forms a detachable connection between the fastener 34 and the filter element 32. Alternatively, the fastener 34 can be a magnetic fastener, with a magnet on the filter element 32 that matches the magnetic fastener. The magnetic attraction of the magnetic fastener to the magnet forms a detachable connection between the fastener 34 and the filter element 32. The fastener 34 can also be a Velcro fastener, with a female Velcro fastener on the filter element 32 that matches the male Velcro fastener. The adhesion of the male and female Velcro fasteners forms a detachable connection between the fastener 34. Of course, the form of the fastener 34 is not limited to any specific embodiment.

[0071] In one specific embodiment, the filter element 32 is hollow, and a filter screen 33 is disposed inside the filter element 32. The filter element 32 and the filter screen 33 are interconnected. The process exhaust gas is initially filtered in the filter element 32 and further filtered in the filter screen 33. That is, the filter element 32 and the filter screen 33 form a double-layer filtration structure. The combination of the filter element 32 and the filter screen 33 can further improve the filtration effect of the filter assembly 30.

[0072] Please see again Figure 1 The outer waste discharge pipe 50 forms a channel for the flow of process exhaust gas to the plant waste treatment system 300. The outer waste discharge pipe 50 is fixedly connected to the plant waste treatment system 300.

[0073] In one specific embodiment, the exhaust gas treatment system 200 further includes a manual valve 61 and an automatic valve 62, wherein the manual valve 61 is disposed between the cooling assembly 20 and the filter assembly 30, and the automatic valve 62 is disposed between the filter assembly 30 and the pump 10.

[0074] The manual valve 61 is used to manually adjust the exhaust gas flow rate in the exhaust gas treatment system 200 by a small margin. This allows the exhaust gas flow rate in the exhaust gas treatment system 200 to be adjusted to a suitable range according to different process requirements, thereby improving the treatment efficiency of the exhaust gas treatment system 200. Moreover, in case of excessive exhaust gas flow, emergency adjustments can be made using the manual valve 61 and the automatic valve 62 to prevent damage to the exhaust gas treatment system 200.

[0075] For example, when the flow rate of the process exhaust gas is too high and the cooling assembly 20 is unable to reduce the process exhaust gas to the specified temperature, the flow rate of the process exhaust gas is reduced by decreasing the manual valve 61 to improve the degree of cooling of the process exhaust gas. When the flow rate of the process exhaust gas is too low and the cooling effect of the cooling assembly 20 is excessive, the flow rate of the process exhaust gas is increased by increasing the manual valve 61, thereby improving the working efficiency of the exhaust gas treatment system 200.

[0076] The exhaust gas treatment system 200 also includes a flow meter (not shown) and a control module (not shown), with the control module electrically connected to both the flow meter and the control module. For example, the control module is connected to the flow meter via a wire and also to an automatic valve 62 via a wire. The automatic valve 62 is used to automatically regulate the exhaust gas flow rate in the exhaust gas treatment system 200. Exemplarily, the flow meter is mounted on the cooling element 21.

[0077] The flow meter is used to obtain the real-time flow rate of the process exhaust gas in the exhaust gas treatment system 200; the control module is used to compare the obtained real-time flow rate with the flow rate threshold to generate control commands; the automatic valve 62 is used to receive and respond to the control commands to regulate the flow rate of the process exhaust gas passing through.

[0078] For example, when the real-time flow rate acquired by the flow meter remains above a first flow threshold for 10 seconds, the control module generates a flow reduction command, automatically switches to acquire and respond to the flow reduction command to reduce the flow rate of the process exhaust gas, thereby increasing the cooling time of the process exhaust gas; when the real-time flow rate acquired by the flow meter remains below a second flow threshold for 10 seconds, the control module generates a flow increase command, automatically switches to acquire and respond to the flow increase command to increase the flow rate of the process exhaust gas, thereby improving the process exhaust gas treatment efficiency. The first flow threshold is higher than the second flow threshold.

[0079] In addition, by combining the automatic valve 62 and the manual valve 61, even if one of the automatic valve 62 and the manual valve 61 fails, the flow rate can still be adjusted by operating the other one, so the flow control of the exhaust gas treatment system 200 is stable and reliable.

[0080] In other embodiments, the exhaust gas treatment system 200 may only have a manual valve 61, or only an automatic valve 62. The location of the manual valve 61 is not limited to between the cooling assembly 20 and the filter assembly 30, but may also be located between the filter assembly 30 and the pump 10. The location of the automatic valve 62 is not limited to between the filter assembly 30 and the pump 10, but may also be located between the cooling assembly 20 and the filter assembly 30.

[0081] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom still fall within the protection scope of this invention.

Claims

1. An exhaust gas treatment system, characterized in that, include: Cooling components are used to cool process exhaust gases; A filter assembly, connected to the cooling assembly, is used to filter solid substances in the process exhaust gas; A jet-blowing assembly, connected to the filter assembly, is used to discharge dust from the output end of the exhaust gas treatment system.

2. The exhaust gas treatment system according to claim 1, characterized in that, It also includes a pump, the input of which is connected to the filter assembly, and the output of which is connected to the jetting assembly.

3. The exhaust gas treatment system according to claim 2, characterized in that, It also includes an external waste discharge pipe and a T-connector, wherein the external waste discharge pipe is connected to the pump and the jetting assembly respectively through the T-connector.

4. The exhaust gas treatment system according to claim 2, characterized in that, The input end of the exhaust gas treatment system is configured to be connected to a vacuum chamber, and one or more exhaust gas treatment lines are provided between the vacuum chamber and the pump. The cooling component and the filter component are provided on each of the exhaust gas treatment lines.

5. The exhaust gas treatment system according to claim 3, characterized in that, The blowing assembly includes a protective gas source and a blowing switch. The protective gas source is used to store protective gas and is connected to the tee pipe through a connecting branch pipe. The blowing switch is located between the protective gas source and the tee pipe.

6. The exhaust gas treatment system according to claim 1, characterized in that, The filtration assembly includes a filter housing and a filter element disposed within the filter housing, wherein the filter housing has an inlet and an outlet.

7. The exhaust gas treatment system according to claim 6, characterized in that, The filter assembly also includes a fixing member, through which the filter element is detachably connected to the filter housing.

8. The exhaust gas treatment system according to claim 6, characterized in that, The filter element is configured in a pleated shape, the filter element is hollow, and a filter screen is disposed inside the filter element.

9. The exhaust gas treatment system according to claim 1, characterized in that, It also includes a manual valve located between the cooling assembly and the filter assembly.

10. The exhaust gas treatment system according to claim 2, characterized in that, It also includes a control module, a flow meter, and an automatic valve. The control module is electrically connected to the flow meter and the automatic valve, respectively. The automatic valve is located between the filter assembly and the pump.

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