Flue gas purification system of low-emission environment-friendly electrode paste roasting furnace
By improving the smoke exhaust method and flue gas treatment system of the well-type roasting furnace, the serious problem of black smoke in the early stage of electrode paste roasting is solved, and efficient and low-cost flue gas purification and standard emissions are achieved.
Patent Information
- Application Number
- CN202422208085.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the prior art, the high-temperature harmful flue gas generated by roasting electrode paste products is difficult to be treated environmentally friendly under the premise of small investment, especially the black smoke in the early stage of roasting, and existing equipment consumes water resources and pollutes the environment.
Change the smoke exhaust direction of the well-type roasting furnace to the lower smoke exhaust, and fully burn through the high-temperature zone of the well-type roasting furnace. Combined with the extended and enlarged smoke exhaust pipes and cold air inlet, the flue gas temperature is reduced to below 120℃, and dust removal is performed using a bag dust collector. The bending flue is designed and equipped with a flip valve and air distribution valve to control the air flow.
It has achieved the standard emissions of flue gas, reduced equipment investment and water resource consumption, improved flue gas treatment efficiency, and reduced environmental pollution.
Smart Images
Figure CN223077452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a flue gas purification system for a low-emission environmental protection type electrode paste roasting furnace. Background Technique
[0002] In the experiment of strength detection of electrode paste products, it is necessary to roast the experimental samples. However, harmful gas-containing flue gas will be generated during roasting. Especially in the first 6 hours of the roasting process, due to the incomplete combustion of the experimental samples, black smoke will appear. Only in the subsequent 18 hours of operation, the soot will gradually decrease.
[0003] In the prior art, most carbon enterprises use the test roasting furnace as the equipment for strength detection of electrode paste products. Due to its short working time, limited sample roasting amount, and small flue gas volume generated, and at the same time, the flue gas generated by roasting has a very high temperature and is difficult to treat. Or use water-cooling, air-cooling and other equipment with mature market technology, which requires a large investment and consumes water resources. Therefore, the flue gas is discharged outside, causing certain pollution to the environment. Content of the Utility Model
[0004] The purpose of the utility model is to solve the problem in the prior art that when conducting a strength experiment on an electrode paste product, it is difficult to carry out environmental protection treatment on the generated high-temperature harmful flue gas under the premise of a small investment.
[0005] In order to achieve the above purpose, the present application proposes a flue gas purification system for a low-emission environmental protection type electrode paste roasting furnace, including: a shaft roasting furnace, an underground flue arranged at the flue gas output port of the shaft roasting furnace, a ground flue connected to the output port of the underground flue, a fan module connected to the output end of the ground flue, and an air outlet pipe connected to the fan module and arranged vertically.
[0006] The flue gas purification system of the low-emission environmental protection type electrode paste roasting furnace of the present application changes the smoke exhaust direction of the shaft roasting furnace from upward smoke exhaust to downward smoke exhaust, so that the flue gas generated by roasting passes through the high-temperature area of the shaft roasting furnace, enabling it to burn and burn out completely. The discharged high-temperature flue gas is cooled from 350 °C to below 120 °C and introduced into a bag filter for dust removal, completely solving the problem of black smoke emission from the roasting furnace and achieving up-to-standard emission.
[0007] Furthermore, in order to lengthen and increase the smoke exhaust pipe, reduce the flow rate of the flue gas, and thus increase the heat dissipation area, the diameter of the underground flue is larger than that of the ground flue.
[0008] As an improvement of the above ground flue of the present application, in order to prevent flue gas from flowing back and reduce noise, the ground flue includes: a vertical section arranged vertically; a horizontal section arranged horizontally; and a bending section connecting the vertical section and the horizontal section and presenting a 90° bend.
[0009] Further, in order to introduce a certain amount of cold air into the flue and clean the dust particles accumulated in the flue, a flap valve is provided on the vertical section, and a air distribution valve is provided on the horizontal section.
[0010] Further, in order to improve the fan efficiency, an air outlet reducer assembly is provided at the input end of the air outlet pipe.
[0011] Further, in order to make the installation of the fan module more stable, the fan module includes a fan body, a fan base buried underground, and a fan bracket connecting the fan body and the fan base.
[0012] Further, in order to improve the sealing performance between the fan and the flue and facilitate the installation of the fan, the output end of the above-ground flue is connected to the air inlet of the fan body through a flexible connection.
[0013] The beneficial effects of this application are as follows:
[0014] 1. For the flue gas purification system of the low-emission and environment-friendly electrode paste roasting furnace of this application, the smoke exhaust direction of the shaft furnace is changed from upward smoke exhaust to downward smoke exhaust, so that the flue gas generated by roasting passes through the high-temperature area of the shaft furnace, making it burn and burn out completely. The discharged high-temperature flue gas is cooled from 350 °C to below 120 °C and introduced into the bag filter for dust removal, completely solving the problem of black smoke emission from the roasting furnace and achieving up-to-standard emission.
[0015] 2. For the cooling module of this application, by using a method of lengthening and enlarging the smoke exhaust pipe, reducing the flow rate of the flue gas, increasing the heat dissipation area, and appropriately introducing a certain amount of cold air, the technical effect of cooling the high-temperature flue gas is achieved, enabling the flue gas to directly pass through the bag filter for dust removal without using water-cooling, air-cooling and other equipment with mature market technologies, with a small investment ratio and less water consumption.
[0016] 3. The flue of this application is arranged in a 90° bend, and an air distribution valve and a flap valve are arranged on the flue. By introducing cold air into the flue, on the one hand, sufficient air can be provided to ensure the combustion efficiency of the flue gas. On the other hand, the introduced cold air can further reduce the temperature of the flue gas. At the same time, the arrangement of the air distribution valve and the flap valve can also control the flow direction of the gas or particulate material to further improve the smoke exhaust efficiency of the flue gas. Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 This is a structural schematic diagram of a flue gas purification system of a low-emission and environmentally friendly electrode paste baking furnace in an embodiment of the present application;
[0019] Description of reference numerals:
[0020] 1. Pit-type roasting furnace; 2. Underground flue; 3. Ground flue; 31. Vertical section; 32. Horizontal section; 33. Bending section; 4. Fan module; 41. Fan body; 42. Fan bracket; 43. Fan base; 5. Air outlet pipe; 6. Flap valve; 7. Air distribution valve; 8. Air outlet reducing assembly; 9. Soft connection. DETAILED DESCRIPTION
[0021] The following will be combined with the attached Figure 1 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.
[0022] like Figure 1 The present application illustrates a flue gas purification system for a low-emission, environmentally friendly electrode paste roasting furnace, comprising: a pit-type roasting furnace 1, an underground flue 2 arranged at the flue gas outlet of the pit-type roasting furnace 1, an above-ground flue 3 connected to the outlet of the underground flue 2, a fan module 4 connected to the output end of the above-ground flue 3, and an air outlet pipe 5 connected to the fan module 4 and arranged in a vertical direction.
[0023] In one embodiment of the present application, the core component includes a pit type roasting furnace 1, which has a smoke outlet on the top or side for discharging smoke generated during the roasting process. Below the smoke outlet, an underground flue 2 is provided, and the pipe diameter of the underground flue 2 is designed to be larger than the subsequent ground flue 3 to lengthen and increase the length and area of the smoke exhaust pipe, thereby slowing down the smoke flow rate, increasing the heat dissipation area, and facilitating the initial cooling of the smoke.
[0024] Continue to refer to Figure 1 In a further embodiment, the design of the above-ground flue 3 adopts a segmented structure, specifically including a vertical section 31 arranged along the vertical direction, which is directly connected to the output port of the underground flue 2; a horizontal section 32 arranged along the horizontal direction, which is used to change the direction of the flue gas flow and facilitate the installation of subsequent equipment; and a bending section 33 connecting the vertical section 31 and the horizontal section 32, and the bending section 33 is designed to be a 90° bend, which not only effectively prevents the backflow of flue gas, but also reduces the noise to a certain extent.
[0025] Continue to refer to Figure 1, in a further embodiment, a flap valve 6 is provided on the vertical section 31. The flap valve 6 can be opened or closed as needed, used to clean the dust particles accumulated in the flue, and can adjust the flow rate and temperature of the flue gas by opening appropriately. On the horizontal section 32, an air distribution valve 7 is provided, used to introduce a certain amount of cold air into the flue when necessary, so as to further reduce the temperature of the flue gas and ensure its full combustion.
[0026] Continue to refer to Figure 1 , in a further embodiment, the output end of the above-ground flue 3 is connected to the air inlet of the fan module 4 through a flexible connection 9. The design of the flexible connection 9 improves the sealing performance between the fan and the flue, and facilitates the installation and maintenance of the fan. The fan module 4 includes a fan body 41, a fan base 43 buried underground, and a fan bracket 42 connecting the fan body 41 and the fan base 43. This design makes the fan module 4 installed stably and operates smoothly.
[0027] Continue to refer to Figure 1 , in a further embodiment, after the fan module 4, an air outlet pipe 5 is arranged in the vertical direction. An air outlet diameter-changing assembly 8 is provided at its input end. By adjusting the pipe diameter of the air outlet pipe, the efficiency of the fan can be improved to ensure that the flue gas can be discharged smoothly.
[0028] The working principle of the entire flue gas purification system is as follows: The flue gas generated during the roasting process first passes through the high-temperature area of the shaft roasting furnace 1 for combustion and complete burnout, and then enters the underground flue 2 for preliminary cooling. Since the diameter of the underground flue 2 is relatively large, the flow rate of the flue gas slows down, the heat dissipation area increases, and the temperature of the flue gas is further reduced. Subsequently, the flue gas enters the above-ground flue 3. Through the guidance of the vertical section 31, the bending section 33, and the horizontal section 32, the flow rate and direction of the flue gas are adjusted. When needed, cold air can be introduced into the flue through the flap valve 6 and the air distribution valve 7 to further reduce the temperature of the flue gas and ensure its full combustion. Finally, the cooled and purified flue gas is discharged through the air outlet pipe 5 under the action of the fan module 4, and can be introduced into a bag filter for further dust removal treatment as needed, so as to achieve up-to-standard discharge.
[0029] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application.
[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "arrange", "be provided with", "connect", "install" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application may be understood according to specific circumstances.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A flue gas purification system for a low-emission and environmentally friendly electrode paste roasting furnace, comprising: Vertical shaft roasting furnace (1), characterized in that it comprises an underground flue (2) provided at the flue gas outlet of the vertical shaft roasting furnace (1), a ground flue (3) connected to the outlet of the underground flue (2), a fan module (4) connected to the output end of the ground flue (3), and an air outlet pipe (5) connected to the fan module (4) and arranged vertically.
2. The flue gas purification system according to claim 1, characterized in that, The diameter of the underground flue (2) is larger than that of the ground flue (3).
3. The flue gas purification system according to claim 1, characterized in that, The ground flue (3) includes: a vertical section (31) arranged vertically; a horizontal section (32) arranged horizontally; and a bending section (33) connecting the vertical section (31) and the horizontal section (32) and presenting a 90° bend.
4. The flue gas purification system according to claim 3, characterized in that A flap valve (6) is provided on the vertical section (31), and a air distribution valve (7) is provided on the horizontal section (32).
5. The flue gas purification system according to claim 1, characterized in that, An air outlet diameter-changing assembly (8) is provided at the input end of the air outlet pipe (5).
6. The flue gas purification system according to claim 1, characterized in that, The fan module (4) includes a fan body (41), a fan base (43) buried underground, and a fan bracket (42) connecting the fan body (41) and the fan base (43).
7. The flue gas purification system according to claim 1, wherein, The output end of the ground flue (3) is connected to the air inlet of the fan body (41) through a flexible connection (9).