Curing oven flue gas treatment device
By combining sedimentation filtration and wet electrostatic filtration in the curing oven flue gas treatment device, and using a backwashing system to regularly clean the electrostatic dust removal filter, the problem of low efficiency in curing oven flue gas treatment is solved, achieving high-efficiency air protection and energy-saving effects.
Patent Information
- Application Number
- CN202520217810.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-12
AI Technical Summary
In existing technologies, the efficiency of treating flue gas emitted from curing ovens is low, and the electrostatic precipitator needs to be cleaned manually every time, which is labor-intensive and affects the dust removal efficiency, and cannot effectively reduce the harm of air pollution to the human body.
The curing oven flue gas treatment device includes a curing oven flue gas dust settling chamber, flue gas extraction pipeline, wet electrostatic precipitator, and backwashing system. It combines sedimentation filtration and wet electrostatic filtration, and uses backwashing pumps and nozzles to regularly flush the electrostatic precipitator filter components to improve cleaning efficiency.
It achieves effective treatment of curing oven flue gas, reduces air pollution, improves dust removal and cleaning efficiency, and achieves the goals of air protection and energy conservation.
Smart Images
Figure CN223811122U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of rock wool manufacturing, and particularly relates to a curing furnace flue gas treatment device. BACKGROUND
[0002] Rock wool is a common thermal insulation material, which is formed by basalt, coke, dolomite and slag and other raw materials through melting, centrifugation to fiberize and further processing into rock wool board or other products. With the development of national economy and the implementation of national energy-saving policy, the demand for rock wool products for building and industrial thermal insulation is increasing; the curing furnace is an industrial equipment, which is usually used for curing specific materials under certain temperature and time conditions, so that the materials become more solid, wear-resistant and corrosion-resistant, etc. In the rock wool manufacturing process, the working principle of the curing furnace is to make the chemical reaction between the molecules of the material occur through heating and heat preservation to achieve the effect of curing. However, during normal use of the curing furnace, flue gas is generated, which is directly discharged into the air to cause air pollution and harm the health of workers.
[0003] In the related art, the flue gas discharged from the curing furnace is treated by an electric dust removal device. The electric dust removal device uses electrons emitted from the cathode plate and discharge pole in the high-voltage electric field, and negative ions generated by the collision of air molecules with the electrons to capture oil smoke particles, so that the oil smoke particles are charged. Then, the charged oil smoke particles are adsorbed by the cathode plate by the action of the electric field, so as to remove the oily substances in the flue gas, and then discharge the flue gas to the atmosphere. However, the dust removal efficiency of this flue gas treatment method is limited, and the inside of the electric dust removal device needs to be cleaned regularly by workers, which consumes a lot of manpower and time, and affects the flue gas dust removal efficiency. CONTENT OF THE UTILITY MODEL
[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a curing furnace flue gas treatment device, which can effectively treat the flue gas discharged from the curing furnace, meet the air environmental protection requirements, reduce the harm of air pollution to the human body, achieve the purpose of energy saving and environmental protection, and improve the cleaning efficiency of the wet electric dust removal tank.
[0005] The present application provides a curing furnace flue gas treatment device, which comprises a curing furnace flue gas dust settling chamber, a flue gas suction and conveying pipeline, a wet electric dust removal tank, a wastewater discharge pipeline and a backwashing system.
[0006] The top of the solidification furnace flue gas dust settling chamber is provided with an exhaust pipe, the input end of the flue gas pumping pipeline is connected with the top of the solidification furnace flue gas dust settling chamber, the output end of the flue gas pumping pipeline is communicated with the inside of the wet electric dust removal tank, and the output end of the flue gas pumping pipeline is arranged close to the bottom of the wet electric dust removal tank, the backwashing system comprises a backwashing pump, a flushing water input pipeline, a backwashing nozzle and a circulating water pool, the backwashing nozzle is arranged in the inside of the wet electric dust removal tank, the output end of the flushing water input pipeline extends into the inside of the wet electric dust removal tank and is connected with the input end of the backwashing nozzle, the output end of the backwashing nozzle is arranged close to the top of the wet electric dust removal tank, the input end of the flushing water input pipeline extends into the circulating water pool, the backwashing pump is arranged on the flushing water input pipeline, and the backwashing pump is arranged close to the circulating water pool, the inside of the wet electric dust removal tank is provided with a collecting groove, the collecting groove is arranged close to the bottom of the wet electric dust removal tank, and the input end of the waste water discharge pipeline is arranged in the tank wall of the wet electric dust removal tank and extends into the collecting groove;
[0007] The solidification furnace flue gas dust settling chamber is used for receiving flue gas discharged by the solidification furnace and performing sedimentation filtering on the flue gas, obtaining preliminary filtered flue gas and conveying the preliminary filtered flue gas to the wet electric dust removal tank through the flue gas pumping pipeline, the wet electric dust removal tank is used for performing wet electrostatic filtering on the preliminary filtered flue gas, obtaining filtered gas and discharging the gas to the atmosphere through the exhaust pipe, the backwashing pump is used for extracting circulating water in the circulating water pool, filtering the circulating water and conveying the filtered circulating water to the backwashing nozzle, and the backwashing nozzle is used for flushing the inner wall of the wet electric dust removal tank and the electrostatic dust removal filter in the inside of the wet electric dust removal tank from top to bottom.
[0008] According to some embodiments of the present application, the solidification furnace flue gas treatment device further comprises a control mechanism connected with the backwashing pump.
[0009] According to some embodiments of the present application, the inside of the solidification furnace flue gas dust settling chamber is provided with an ash bucket collector arranged close to the bottom of the flue gas dust settling chamber.
[0010] According to some embodiments of the present application, the circulating water pool is provided with a cover plate.
[0011] According to some embodiments of the present application, the backwashing system further comprises a sealing barrel arranged on the cover plate, the input end of the flushing water input pipeline extends into the inside of the sealing barrel and into the circulating water pool, and the sealing barrel is arranged between the backwashing pump and the circulating water pool.
[0012] According to some embodiments of the present application, the electrostatic precipitation filter comprises a plurality of dust collection electrode plates arranged in multiple layers in sequence, and the dust collection electrode plates in each layer are formed by alternately arranging a plurality of electrostatic precipitation anode plates and a plurality of cathode wires in a layer and arranging them in a mesh shape.
[0013] According to some embodiments of the present application, the solidification furnace flue gas treatment device further comprises a wastewater filtering mechanism, and the output end of the wastewater discharge pipeline is connected to the wastewater filtering mechanism.
[0014] The beneficial effects of the present application are embodied in that the solidification furnace flue gas dust settling chamber is used to receive the flue gas discharged by the solidification furnace and perform sedimentation filtration on the flue gas, to obtain preliminary filtered flue gas and transport the preliminary filtered flue gas to the wet electrostatic precipitation tank through the flue gas pumping pipeline, the wet electrostatic precipitation tank is used to perform wet electrostatic filtration on the preliminary filtered flue gas, to obtain filtered gas and discharge the gas to the atmosphere through the exhaust pipe, the backwashing pump is used to extract the circulating water in the circulating water pool and transport the filtered circulating water to the backwashing nozzle, the backwashing nozzle is used to wash the inner wall of the wet electrostatic precipitation tank and the electrostatic precipitation filter inside the wet electrostatic precipitation tank from top to bottom, and the wastewater after washing falls into the collecting tank and is discharged through the wastewater discharge pipeline. Through such a design, the present application can effectively treat the flue gas discharged by the solidification furnace, meet the requirements of air environmental protection, reduce the harm of air pollution to the human body, achieve the purpose of energy saving and environmental protection, and improve the cleaning efficiency of the wet electrostatic precipitation tank.
[0015] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS
[0016] Additional aspects and advantages of the present application will become apparent and are in part defined by the description of embodiments given hereinafter with reference to the accompanying drawings wherein:
[0017] Figure 1 The structure diagram of the solidification furnace flue gas treatment device provided for the embodiments of the present application is shown.
[0018] Reference Signs:
[0019] The solidification furnace flue gas dust settling chamber 100, the flue gas pumping pipeline 110;
[0020] The wet electrostatic precipitation tank 200, the exhaust pipe 210, the flushing water input pipeline 220, and the wastewater discharge pipeline 230;
[0021] The circulating water pool 300, the backwashing pump 310, the cover plate 320, the sealing barrel 330, and the wastewater filtering mechanism 340. DETAILED DESCRIPTION
[0022] Embodiments of the present application are described below in detail with reference to examples thereof illustrated in the accompanying drawings, wherein like or similar elements across the various figures are denoted by like or similar reference numerals, and any reference to the application in the description is only for the purpose of exemplifying the application and cannot be understood in the sense of restricting the application.
[0023] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, 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, and therefore cannot be understood as a limitation on the present application.
[0024] In the description of the present application, if the first, second, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of technical features indicated or the order of the technical features indicated.
[0025] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection, etc. should be broadly understood, and the specific meaning of the above words in the present application can be reasonably determined by the person skilled in the art in combination with the specific content of the technical solution.
[0026] Rock wool is a common thermal insulation material, which is made of basalt, coke, dolomite and slag and other raw materials through melting, centrifugation to make it fibrous and further processing to form rock wool board or other products. With the development of national economy and the implementation of national energy-saving policy, the demand for rock wool products for building and industrial thermal insulation is increasing; the curing furnace is an industrial equipment, which is usually used for curing specific materials under certain temperature and time conditions, so that the materials become more solid, wear-resistant, corrosion-resistant, etc. In the process of rock wool manufacturing, the working principle of the curing furnace is to make the chemical reaction between the molecules of the material occur through heating and heat preservation to achieve the effect of curing. However, during normal use of the curing furnace, smoke will be generated, which will be directly discharged into the air, causing air pollution and endangering the health of workers.
[0027] In the related art, the flue gas discharged by the solidification furnace is treated by an electric dust removal device. The electric dust removal device uses electrons emitted in a high-voltage electric field by a cathode plate and a discharge electrode in cooperation with negative ions generated by electron collision with air molecules to capture oil fume particles, so that the oil fume particles are charged. Then, the charged oil fume particles are adsorbed by the cathode plate by the action of an electric field, so as to remove oily substances in the flue gas, and then the flue gas is discharged to the atmosphere. However, the dust removal efficiency of this flue gas treatment method is limited, and the inside of the electric dust removal device needs to be cleaned regularly by the staff, which consumes a lot of manpower and time, and at the same time affects the flue gas dust removal efficiency.
[0028] In order to solve the above problems, the present application provides a solidification furnace flue gas treatment device, which is further described below in combination with the drawings.
[0029] With reference to Figure 1 The present application provides a solidification furnace flue gas treatment device, which comprises a solidification furnace flue gas dust settling chamber 100, a flue gas pumping pipeline 110, a wet electric dust removal tank 200, a wastewater discharge pipeline 230 and a backwashing system. The top of the solidification furnace flue gas dust settling chamber 100 is provided with a smoke exhaust pipe 210. The input end of the flue gas pumping pipeline 110 is connected to the top of the solidification furnace flue gas dust settling chamber 100. The output end of the flue gas pumping pipeline 110 is in communication with the inside of the wet electric dust removal tank 200, and the output end of the flue gas pumping pipeline 110 is arranged close to the bottom of the wet electric dust removal tank 200. The backwashing system comprises a backwashing pump 310, a flushing water input pipeline 220, a backwashing nozzle and a circulating water pool 300. The backwashing nozzle is arranged in the inside of the wet electric dust removal tank 200. The output end of the flushing water input pipeline 220 extends into the inside of the wet electric dust removal tank 200 and is connected to the input end of the backwashing nozzle. The output end of the backwashing nozzle is arranged close to the top of the wet electric dust removal tank 200. The input end of the flushing water input pipeline 220 extends into the circulating water pool 300. The backwashing pump 310 is arranged on the flushing water input pipeline 220 and is arranged close to the circulating water pool 300. The inside of the wet electric dust removal tank 200 is provided with a collection tank, which is arranged close to the bottom of the wet electric dust removal tank 200. The input end of the wastewater discharge pipeline 230 is arranged through the tank wall of the wet electric dust removal tank 200 and extends into the collection tank. The solidification furnace flue gas dust settling chamber 100 is used for receiving the flue gas discharged by the solidification furnace and performing sedimentation filtration on the flue gas, so as to obtain the preliminarily filtered flue gas and transport the preliminarily filtered flue gas to the wet electric dust removal tank 200 through the flue gas pumping pipeline 110. The wet electric dust removal tank 200 is used for performing wet electrostatic filtration on the preliminarily filtered flue gas, so as to obtain the filtered gas and discharge the gas to the atmosphere through the smoke exhaust pipe 210. The backwashing pump 310 is used for extracting the circulating water in the circulating water pool 300, filtering the circulating water and then transporting the filtered circulating water to the backwashing nozzle. The backwashing nozzle is used for flushing the inner wall of the wet electric dust removal tank 200 and the electrostatic dust removal filter element in the inside of the wet electric dust removal tank 200 from top to bottom.
[0030] It should be noted that the curing furnace flue dust settling chamber 100 is connected with the flue gas discharge end of the curing furnace, so that the flue gas discharged by the curing furnace can be sequentially conveyed to the curing furnace flue dust settling chamber 100 and the wet electric dust removal tank 200 for secondary filtration to meet the standard and then discharged to the atmosphere.
[0031] In some embodiments, a plurality of backwashing nozzles are uniformly and spacedly arranged at the top inside the wet electric dust removal tank 200, which can flush the inner wall of the wet electric dust removal tank 200 and the electrostatic dust removal filter inside the wet electric dust removal tank 200 when the equipment of the wet electric dust removal tank 200 is powered off and air supply is stopped. The flushing time can be flexibly adjusted according to the actual operating conditions. The flushing sewage enters the collection water tank and is conveyed out through the wastewater discharge pipeline 230.
[0032] It should be noted that the electrostatic dust removal filter inside the wet electric dust removal tank 200 will have particles or colloidal substances attached to it during the filtration of flue gas, which will have strong adsorption force with the surface of the electrostatic dust removal filter. Over a long period of time, the adsorption effect of the electrostatic dust removal filter on impurities is reduced, and the dust removal effect is reduced. Therefore, the electrostatic dust removal filter needs to be regularly flushed by setting a backwashing system.
[0033] In this application, the curing furnace flue dust settling chamber 100 is used to receive the flue gas discharged by the curing furnace and to perform sedimentation filtration on the flue gas, to obtain the preliminary filtered flue gas and convey the preliminary filtered flue gas to the wet electric dust removal tank 200 through the flue gas pumping pipeline 110. The wet electric dust removal tank 200 is used to perform wet electrostatic filtration on the preliminary filtered flue gas, to obtain the filtered gas and discharge the gas to the atmosphere through the exhaust gas pipe 210. The backwashing pump 310 is used to extract the circulating water in the circulating water pool 300 and convey the filtered circulating water to the backwashing nozzle. The backwashing nozzle is used to flush the inner wall of the wet electric dust removal tank 200 and the electrostatic dust removal filter inside the wet electric dust removal tank 200 from top to bottom. The flushed wastewater falls into the collection water tank and is discharged through the wastewater discharge pipeline 230. Through this arrangement, the application can effectively treat the flue gas discharged by the curing furnace, meet the requirements of air environmental protection, reduce the harm of air pollution to the human body, achieve the purpose of energy saving and environmental protection, and improve the cleaning efficiency of the wet electric dust removal tank 200.
[0034] It can be understood that the curing furnace flue gas treatment device further comprises a control mechanism connected with the backwashing pump 310.
[0035] It should be noted that the control mechanism is used to control whether the backwashing pump 310 pumps the water in the circulating water pool 300 and conveys it to the backwashing nozzle to perform wet electric treatment on the wet electric dust removal tank 200.
[0036] It can be understood that the inside of the solidification furnace flue gas dust settling chamber 100 is provided with a hopper collector, which is arranged close to the bottom of the flue gas dust settling chamber.
[0037] It should be noted that after the flue gas enters the settling chamber, the area expands and the speed decreases. The large particle dust settles to the bottom before the flue gas flows out of the settling chamber due to its high settling speed. The dust that has not settled is carried out with the flue gas and collected and stored by the hopper collector at the bottom of the settling chamber.
[0038] Referring to Figure 1 It can be understood that the circulating water tank 300 is provided with a cover plate 320.
[0039] It should be noted that the cover plate 320 is arranged on the circulating water tank 300, i.e. the cover plate 320 is buckled on the circulating water tank 300, so as to seal the circulating water tank 300.
[0040] Referring to Figure 1 It can be understood that the backwashing system further comprises a sealing barrel 330, the sealing barrel 330 is arranged on the cover plate 320, the input end of the backwashing water input pipeline 220 penetrates into the inside of the sealing barrel 330 and extends into the circulating water tank 300, and the sealing barrel 330 is arranged between the backwashing pump 310 and the circulating water tank 300.
[0041] It should be noted that through the cooperation of the sealing barrel 330 and the cover plate 320, air is prevented from being sucked into the input end of the backwashing water input pipeline 220 and being transported to the backwashing pump 310. The air sucked into the backwashing pump 310 will have many adverse effects on the performance and operation of the backwashing pump 310. First, the air entering the backwashing pump 310 will reduce its water efficiency, because the air mixed with the liquid forms bubbles, and the accumulation of these bubbles in the pump body will cause pressure fluctuations, vibration and noise, thereby reducing the effective flow area of the pump body. Second, the air entering the backwashing pump 310 will affect the service life of the pump body, and long-term vibration and impact force will cause damage and wear to the parts of the pump, increasing maintenance costs. In addition, air entering the water pump will also increase energy consumption, because the pump needs to consume more energy to overcome the problem of water flow interruption and efficiency reduction, which may cause the motor to overheat and be damaged. Finally, the air entering the backwashing pump 310 will reduce the stability of the system, causing fluctuations in output flow and pressure, affecting the normal operation of the entire system.
[0042] It can be understood that the electrostatic dust removal filter comprises a plurality of layers of dust collecting plates arranged in sequence and at intervals, and each layer of dust collecting plates is formed by alternately arranging a plurality of electrostatic dust removal anode plates and a plurality of cathode lines in a layer and arranging them in a mesh shape.
[0043] It should be noted that the primary filtration flue gas is transported from the flue dust settling chamber to the wet electric dust removal tank 200 through the flue gas pumping pipeline 110, and a tens of thousands of volts of direct current high voltage is applied between the electric dust removal anode plate and the cathode wire, so that a corona layer is generated around the corona wire, air is ionized to generate a large number of negative ions and a small amount of positive ions, dust particles collide and combine with these ions to carry electric charges, and the charged dust particles are adsorbed to the dust collecting plate under the action of the electric field force, and the filtered gas meets the composite emission standard and is discharged to the atmosphere through the exhaust pipe 210 above the wet electric dust removal tank 200.
[0044] With reference to Figure 1 It can be understood that the solidification furnace flue gas treatment device further comprises a wastewater filtering mechanism 340, and the output end of the wastewater discharge pipeline 230 is connected to the wastewater filtering mechanism 340.
[0045] It should be noted that the wastewater in the wet electric dust removal tank 200 transported through the wastewater discharge pipeline 230 is filtered by the wastewater filtering mechanism 340 before being transported to the circulating water tank 300 for recycling, thereby avoiding waste of resources.
[0046] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0047] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered to be within the scope of protection of the present application.
[0048] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A curing oven flue gas treatment apparatus characterized by, The application relates to a solidification furnace flue gas dust settling chamber, a flue gas pumping pipeline, a wet electric dust removal tank, a waste water discharge pipeline and a backwashing system. The top of the solidification furnace flue gas dust settling chamber is provided with a flue gas discharge pipe, the input end of the flue gas pumping pipeline is connected with the top of the solidification furnace flue gas dust settling chamber, the output end of the flue gas pumping pipeline is communicated with the inside of the wet electric dust removal tank, and the output end of the flue gas pumping pipeline is arranged close to the bottom of the wet electric dust removal tank; the backwashing system comprises a backwashing pump, a flushing water input pipeline, a backwashing nozzle and a circulating water pool, the backwashing nozzle is arranged in the inside of the wet electric dust removal tank, the output end of the flushing water input pipeline extends into the inside of the wet electric dust removal tank and is connected with the input end of the backwashing nozzle, the output end of the backwashing nozzle is arranged close to the top of the wet electric dust removal tank, the input end of the flushing water input pipeline extends into the circulating water pool, the backwashing pump is arranged on the flushing water input pipeline, and the backwashing pump is arranged close to the circulating water pool; a collecting water tank is arranged in the inside of the wet electric dust removal tank and arranged close to the bottom of the wet electric dust removal tank, and the input end of the waste water discharge pipeline is arranged in the tank wall of the wet electric dust removal tank and extends into the collecting water tank. The solidification furnace flue gas dust settling chamber is used for receiving flue gas discharged from a solidification furnace and performing sedimentation filtering on the flue gas, obtaining primary filtered flue gas and conveying the primary filtered flue gas to the wet electric dust removal tank through the flue gas pumping pipeline; the wet electric dust removal tank is used for performing wet electrostatic filtering on the primary filtered flue gas, obtaining filtered gas and discharging the gas into the atmosphere through the flue gas discharge pipe; the backwashing pump is used for pumping circulating water in the circulating water pool, filtering the circulating water and conveying the filtered circulating water to the backwashing nozzle; and the backwashing nozzle is used for flushing the inner wall of the wet electric dust removal tank and the electrostatic dust removal filter element in the inside of the wet electric dust removal tank from top to bottom. The solidification furnace flue gas treatment device further comprises a control mechanism connected with the backwashing pump.
2. The curing oven flue gas treatment apparatus according to claim 1, characterized by The inside of the solidification furnace flue gas dust settling chamber is provided with an ash hopper collector arranged close to the bottom of the flue gas dust settling chamber.
3. The curing oven flue gas treatment apparatus of claim 1, wherein, A cover plate is arranged on the circulating water pool.
4. The curing oven flue gas treatment apparatus of claim 1, wherein, The backwashing system further comprises a sealing barrel arranged on the cover plate, the input end of the flushing water input pipeline extends into the inside of the sealing barrel and into the circulating water pool, and the sealing barrel is arranged between the backwashing pump and the circulating water pool.
5. The curing oven flue gas treatment apparatus of claim 4, wherein, The electrostatic dust removal filter element comprises a plurality of layers of dust collecting electrode plates arranged in sequence and at intervals, and each layer of the dust collecting electrode plates is formed by alternately arranging a plurality of electric dust removal anode plates and a plurality of cathode lines in a layer and arranging the anode plates and the cathode lines in a net shape.
6. The curing oven flue gas treatment apparatus of claim 1, wherein, The solidification furnace flue gas treatment device further comprises a waste water filtering mechanism, and the output end of the waste water discharge pipeline is connected to the waste water filtering mechanism.
7. The curing oven flue gas treatment apparatus of claim 1, wherein,