Flue gas treatment equipment for calcining furnace

Abstract

The invention relates to the technical field of flue gas treatment, in particular to calcining furnace flue gas treatment equipment which comprises a gas collecting hopper, a flue gas treatment barrel and an output pump. The gas collecting hopper is externally connected with a gas guiding pipe group for guiding flue gas, the output end of the gas guiding pipe group is connected to the top of a hopper body of the gas collecting hopper, a turnover pipe group is arranged at the bottom of the hopper body of the gas collecting hopper, and the output end of the turnover pipe group is communicated into an inner cavity of the flue gas treatment barrel; a mixing assembly and a circumferential rotating machine pump are arranged on a barrel body of the flue gas treatment barrel, a flue gas white eliminating machine barrel is erected on the side edge of the barrel body of the flue gas treatment barrel, and the input end of the flue gas white eliminating machine barrel is connected with the circumferential rotating machine pump. A heat energy transfer assembly is further erected on the side edge of a barrel body of the flue gas treatment barrel, and the heat energy transfer assembly is connected with the flue gas white smoke eliminating machine barrel and externally connected with a water liquid circulation system. Through the synergistic effect of the gas collecting hopper, the flue gas treatment barrel and the multi-stage purification equipment, pollutants in flue gas can be efficiently removed, heat energy recycling is achieved, and the environment-friendly and low-carbon development concept is met.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, in particular to a calcining furnace flue gas treatment device. Background Art

[0002] Calcination furnaces are widely used in industrial production, especially in the fields of metal, ceramics, glass, and chemicals. However, they produce a large amount of flue gas during operation. These flue gases often contain harmful substances such as sulfur dioxide (SO2) and dust. If not treated, they will cause serious pollution to the environment.

[0003] The existing high-efficiency calciner flue gas treatment equipment generally includes a chassis, a support frame, an air inlet pipe, an air outlet pipe and a control valve. The flue gas is injected into a slurry of a desulfurizer to achieve desulfurization through an oxidation reaction. However, white smoke and water vapor often appear during the flue gas desulfurization process, resulting in the problem of residual harmful substances, thereby affecting the subsequent flue gas exhaust quality. Summary of the Invention

[0004] The object of the present invention is to provide a calciner flue gas treatment device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A calcining furnace flue gas treatment device includes a gas collecting hopper, a flue gas treatment barrel, and an output pump. The gas collecting hopper is a hopper-shaped structure. The gas collecting hopper is externally connected to an air duct assembly for introducing flue gas. The output end of the air duct assembly is connected to the top of the gas collecting hopper. A turnover pipe assembly is provided at the bottom of the gas collecting hopper. The output end of the turnover pipe assembly leads to the inner cavity of the flue gas treatment barrel. The barrel of the flue gas treatment barrel is provided with a mixing assembly and a turnover pump installed on the top of the barrel of the flue gas treatment barrel. A flue gas bleaching barrel is mounted on the side of the barrel of the flue gas treatment barrel. The input end of the flue gas bleaching barrel is connected to the turnover pump. The output end of the flue gas bleaching barrel is externally connected to a lifting barrel. The lifting barrel is connected to the output pump via a secondary adsorption barrel. A heat energy transfer assembly is also mounted on the side of the barrel of the flue gas treatment barrel. The heat energy transfer assembly is connected to the flue gas bleaching barrel and is externally connected to a water circulation system.

[0006] As a further solution of the present invention: the air bleed pipe group includes a first air bleed pipe and a second air bleed pipe, the first air bleed pipe and the second air bleed pipe are both connected to the air collecting hopper, the ends of the first air bleed pipe and the pipe bodies are both provided with air intake heads and regulating valves; the air intake head of the second air bleed pipe is externally connected to a spray branch pipe, and the pipe body of the first air bleed pipe is also provided with a three-way junction valve, and the three-way junction valve is connected to the second air bleed pipe through a junction pipe.

[0007] As a further solution of the present invention: the bottom of the gas collecting hopper is provided with a gas collecting end, a turnover output pump installed at the bottom of the gas collecting end, and a turnover branch pipe provided on the turnover output pump, the pipe end of the turnover branch pipe is installed with a treatment inlet pipe, the output pipe of the treatment inlet pipe extends to the inner cavity of the cylinder of the flue gas treatment barrel, and the bottom of the gas collecting hopper is also provided with a reverse blower.

[0008] As a further solution of the present invention: a positioning bracket and a first drive motor arranged on the positioning bracket are installed on the cylinder body of the flue gas treatment barrel, and a drive shaft is installed on the driving end of the first drive motor. The drive shaft extends into the inner cavity of the cylinder body of the flue gas treatment barrel and is installed with a spiral stirring frame; the top of the cylinder body of the flue gas treatment barrel is also respectively provided with a first auxiliary material adding barrel, a second auxiliary material adding barrel and a treatment barrel output port, and the turnover machine pump is installed on the treatment barrel output port.

[0009] As a further solution of the present invention: a smoke bleaching operating frame is provided in the barrel body of the smoke bleaching barrel, and a second drive motor for driving the smoke bleaching operating frame to rotate is provided at the barrel end of the smoke bleaching barrel; the smoke bleaching barrel as a whole is installed obliquely downward and the height of the input end of the smoke bleaching barrel is lower than the height of the output end of the smoke bleaching barrel; a lifting turnover pipe is installed upward at the output end of the smoke bleaching barrel, and the lifting turnover pipe is connected to the lifting barrel.

[0010] As a further solution of the present invention: the heat energy transfer component includes a side wing fixing column, a reinforced support frame installed on the side wing fixing column, and a circulation pump arranged on the reinforced support frame; pipe body support frames are provided on both sides of the outer periphery of the cylinder body of the flue gas treatment barrel, and input pipe racks and return pipe racks are respectively installed on the pipe body support frames on both sides, and pipelines are provided in the input pipe rack and the return pipe rack, and the pipe ends of the pipelines are connected to the circulation pump through connecting ducts; the other ends of the input pipe rack and the return pipe rack are externally connected to the heat exchange system.

[0011] As a further solution of the present invention: a circulation pump and a circulation pipe group installed on the circulation pump are also provided on the top of the reinforced support frame, a heat energy transfer connecting end is provided on the barrel of the flue gas bleaching machine barrel, and the circulation pipe group is connected to the flue gas bleaching machine barrel through the heat energy transfer connecting end.

[0012] As a further solution of the present invention: the descaling operation frame includes a middle support shaft and a spiral mixing element arranged on the periphery of the middle support shaft, and the middle support shaft extends from the driving end of the second driving motor to the midpoint of the inner cavity of the flue gas descaling barrel; the spiral mixing element includes a front spiral section and a rear spiral section, and the front spiral section is wound around the periphery of the middle support shaft, and the rear spiral section is integrated with the front spiral section and extends to the input end of the flue gas descaling barrel.

[0013] As a further solution of the present invention: the inner cavity of the flue gas whitening machine barrel is provided with a plurality of inner barrel wall spiral blocks, and the inner barrel wall spiral blocks and the front spiral sections are arranged in a staggered manner.

[0014] As a further solution of the present invention: a ventilation cavity is provided in the turnover machine pump, and the side edge of the ventilation cavity is also connected to a booster pump; a closing valve core is provided in the ventilation cavity, and the side edge of the turnover machine pump is also provided with a regulator for controlling the opening and closing of the closing valve core.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The gas collection hopper, the system's initial component, features a hopper-shaped design that effectively collects and directs the calciner's flue gas. This hopper is connected to the calciner's flue gas outlet via an air duct assembly, ensuring smooth flue gas flow. The duct assembly includes multiple branch pipes, enhancing the system's flexibility and adaptability, while the recirculation pipe assembly ensures smooth, leak-free flue gas transfer. The flue gas treatment barrel is filled with a treatment solvent, such as a limestone-gypsum wet desulfurization agent, which reacts with harmful substances in the flue gas to produce gypsum, achieving desulfurization. The mixing assembly within the barrel utilizes mechanical or fluid dynamic design to promote thorough mixing of the solvent and flue gas. The treated flue gas is pumped out by a recirculation pump and fed into the flue gas whitening barrel, which removes harmful substances carried by water vapor and reduces "white smoke." The flue gas then enters the lift barrel, where it is conveyed to the secondary adsorption barrel using air pressure or mechanical lifting. High-efficiency adsorbent materials within this barrel, such as activated carbon and molecular sieves, further remove fine particulate matter and harmful gases, ensuring that flue gas emissions meet standards. To improve energy efficiency, a heat transfer assembly is installed on the side of the flue gas treatment barrel, connected to the flue gas whitening barrel and connected to an external water circulation system. This design recycles the flue gas heat energy and transfers it to the circulating water through a heat exchanger, reducing the temperature and reusing energy, thereby improving system energy efficiency.

[0016] Through the synergistic effects of a gas collection hopper, flue gas treatment barrel, and multi-stage purification equipment, this invention efficiently removes pollutants from flue gas, significantly improving emission quality. The integration of a heat transfer component with a water circulation system not only effectively reduces flue gas temperature and eliminates white smoke, but also enables heat recovery and utilization, in line with green, low-carbon development concepts. Through gas collection, treatment, white smoke elimination, lifting, and adsorption, the system effectively purifies flue gas while simultaneously recycling heat energy for efficient and environmentally friendly flue gas treatment.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. These drawings and the accompanying description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

[0019] Figure 1 A schematic diagram of the overall structure of a calcining furnace flue gas treatment device provided in an embodiment of the present invention; Figure 2 A schematic structural diagram of an air bleed tube assembly provided in an embodiment of the present invention; Figure 3 A schematic diagram of the bottom view structure of a gas collecting hopper provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a flue gas treatment barrel provided in an embodiment of the present invention; Figure 5 A schematic structural diagram of a mixing assembly provided in an embodiment of the present invention; Figure 6 A schematic cross-sectional structural diagram of a flue gas whitening barrel provided by an embodiment of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure of area A in the middle.

[0020] In the figure: 11, gas collecting hopper; 12, flue gas treatment barrel; 13, output pump; 21, air bleed pipe group; 22, turnover pipe group; 23, mixing assembly; 24, turnover pump; 25, flue gas whitening barrel; 26, heat energy transfer assembly; 27, output end outer bracket; 28, lifting barrel; 29, secondary adsorption barrel; 31, first air bleed pipe; 32, second air bleed pipe; 33, air inlet head; 34, regulating valve; 35, three-way junction valve; 36, junction pipe; 37, spray branch pipe; 41, gas gathering end; 42, turnover output pump; 43, turnover branch pipe; 44, treatment inlet pipe; 45, counter-blowing blower; 51, positioning bracket; 52, first drive motor; 53, first auxiliary material adding barrel ; 54. Second auxiliary material adding cylinder; 55. Treatment barrel output port; 56. Drive shaft; 57. Spiral stirring rack; 61. De-whitening operation rack; 62. Second drive motor; 63. Heat energy transfer connection end; 64. Lifting circulation pipe; 71. Ventilation cavity; 72. Booster pump; 81. Regulator; 82. Closing valve core; 91. Middle support shaft; 92. Spiral mixing element; 93. Front spiral section; 94. Rear spiral section; 95. Inner cylinder wall spiral block; 101. Side wing fixing column; 102. Strengthening support frame; 103. Circulation turnover pump; 104. Pipe body support frame; 105. Input pipe rack; 106. Return pipe rack; 107. Circulation pump; 108. Circulation pipe group; 109. Connecting conduit. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0022] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0024] In one embodiment, see Figure 1 , provides a calcining furnace flue gas treatment equipment, including a gas collecting hopper 11, a flue gas treatment barrel 12 and an output pump 13; it also includes: the gas collecting hopper 11 is a hopper-shaped structure, the gas collecting hopper 11 is externally connected to an air duct group 21 for introducing flue gas, the output end of the air duct group 21 is connected to the top of the hopper body of the gas collecting hopper 11, and a turnover pipe group 22 is provided at the bottom of the hopper body of the gas collecting hopper 11, and the output end of the turnover pipe group 22 is connected to the inner cavity of the flue gas treatment barrel 12; a mixing component 23 and a turnover pump 24 installed on the top of the cylinder body of the flue gas treatment barrel 12 are provided on the cylinder body of the flue gas treatment barrel 12, a flue gas deoxidizer barrel 25 is mounted on the side edge of the cylinder body of the flue gas treatment barrel 12, the input end of the flue gas deoxidizer barrel 25 is connected to the turnover pump 24, and the output end of the flue gas deoxidizer barrel 25 is externally connected to a lifting barrel 28, and the lifting barrel 28 is connected to the output pump 13 through a secondary adsorption barrel 29. A heat transfer component 26 is also mounted on the side of the flue gas treatment barrel 12. The heat transfer component 26 is connected to the flue gas deoxidizer barrel 25 and is externally connected to a water circulation system.

[0025] First, the gas hopper 11 serves as the initial collection component of the entire system. Its hopper-shaped structure effectively gathers and guides the flue gas from the calciner. The top of the gas hopper 11 is connected to the flue gas outlet of the calciner via an air duct assembly 21, ensuring that the flue gas can be smoothly and efficiently introduced into the gas hopper 11. The air duct assembly 21 includes multiple branch pipes to accommodate flue gas sources in different locations or with different emission volumes, thereby enhancing the flexibility and adaptability of the system. Furthermore, the design of the circulation pipe assembly 22 must take into account the flue gas flow rate and pressure to ensure smooth and leak-free transfer of the flue gas.

[0026] The flue gas treatment barrel 12 is filled with a treatment solvent that chemically reacts with harmful substances in the flue gas, thereby purifying the flue gas. This embodiment utilizes a limestone-gypsum wet desulfurizer. The alkalinity of lime milk reacts with sulfur dioxide (SO2) in the flue gas to produce calcium sulfite (CaSO3). This oxidizes to produce calcium sulfate (CaSO4), also known as gypsum, thereby achieving desulfurization. A mixing assembly 23 is installed on the barrel. This assembly, through specialized mechanical or fluid dynamic design, thoroughly mixes the treatment solvent with the flue gas. A rotary pump 24 is installed at the top of the flue gas treatment barrel 12 to extract the treated flue gas and deliver it to the flue gas desulfurization barrel 25.

[0027] The lifting barrel 28 and the secondary adsorption barrel 29 are vertically mounted on the output-end external bracket 27. The main function of the flue gas whitening barrel 25 is to remove harmful substances carried by water vapor in the flue gas, thereby reducing the "white smoke" phenomenon and improving emission quality. Its input end is connected to the turnover pump 24 to receive the treated flue gas. After the whitening treatment, the flue gas is sent to the lifting barrel 28, which uses air pressure or mechanical lifting principles to transport the flue gas to the secondary adsorption barrel 29. The secondary adsorption barrel 29 is filled with high-efficiency adsorption materials such as activated carbon and molecular sieves to further remove fine particulate matter and harmful gases in the flue gas, ensuring that the final flue gas emissions meet national or local environmental protection standards.

[0028] Furthermore, to further improve the equipment's energy efficiency, a heat transfer assembly 26 is installed on the side of the flue gas treatment barrel 12. This assembly is connected to the flue gas deoxidizer barrel 25 and to an external water circulation system. This design aims to recycle the heat energy in the flue gas, transferring it to the circulating water through a heat exchanger and other means. This not only reduces the flue gas temperature, but also recycles energy, improving the energy efficiency of the entire system.

[0029] This embodiment, through the synergistic effect of the gas collection hopper 11, flue gas treatment barrel 12, and multi-stage purification equipment, can efficiently remove pollutants from flue gas, significantly improving emission quality. The design of the combination of heat transfer assembly 26 and the water circulation system not only effectively reduces flue gas temperature and eliminates white smoke, but also realizes heat recovery and reduces energy consumption, in line with the concept of green and low-carbon development.

[0030] The entire system of this embodiment effectively purifies the flue gas through the steps of gas collection, treatment, whitening, lifting and adsorption, while recycling and utilizing heat energy to achieve efficient and environmentally friendly flue gas treatment.

[0031] In one embodiment, see Figure 1 、 Figure 2 and Figure 3Based on the contents of the above embodiment, the specific implementation structure of the air bleed pipe group 21 and the air collecting hopper 11 is designed as follows: The air bleed pipe group 21 includes a first air bleed pipe 31 and a second air bleed pipe 32. The first air bleed pipe 31 and the second air bleed pipe 32 are both connected to the air collecting hopper 11. The ends of the first air bleed pipe 31 and the second air bleed pipe 32 are both provided with an air intake head 33 and a regulating valve 34 is provided on the pipe body; the air intake head 33 of the second air bleed pipe 32 is externally connected to a spray branch pipe 37, and the pipe body of the first air bleed pipe 31 is also provided with a three-way connecting valve 35, and the three-way connecting valve 35 is connected to the second air bleed pipe 32 through a connecting pipe 36.

[0032] The first air duct 31 is designed specifically to introduce flue gas with a low dust content. This type of flue gas typically originates from specific areas of the calciner, such as the upper or rear end of the furnace, and has a relatively low concentration of particulate matter. The air inlet head 33 of the first air duct 31 features an optimized design to ensure smooth flue gas flow into the hopper 11 while reducing airflow resistance. A regulating valve 34 on the pipe allows the operator to adjust the flue gas flow rate according to actual needs, achieving more precise control. The second air duct 32 is responsible for introducing flue gas with a higher dust content. This type of flue gas typically originates from the combustion area of ​​the calciner and contains large amounts of particulate matter and fly ash. To reduce the risk of wear and clogging of subsequent processing equipment caused by these particulates, a spray branch 37 is connected to the air inlet head 33 of the second air duct 32. The spray branch 37 sprays an appropriate amount of water mist to moisten and agglomerate particulate matter in the flue gas, making it easier to capture and process. The addition of water mist also lowers the flue gas temperature, improving the stability of subsequent processing equipment.

[0033] A three-way confluence valve 35 is installed on the first air duct 31, connecting it to the second air duct 32 via a confluence pipe 36, thus interconnecting the two pipes. When needed, the operator can open the three-way confluence valve 35 to allow the flue gases in the first and second air ducts 31 and 32 to mix. This design allows for flexible adjustment of the flue gas ratio between the two pipes based on the actual dust content and treatment requirements, for optimal treatment results.

[0034] The bottom of the gas collecting hopper 11 is provided with a gas collecting end 41, a turnover output pump 42 installed at the bottom of the gas collecting end 41, and a turnover branch pipe 43 provided on the turnover output pump 42. The pipe end of the turnover branch pipe 43 is installed with a treatment inlet pipe 44, and the output pipe of the treatment inlet pipe 44 extends to the inner cavity of the cylinder of the flue gas treatment barrel 12. The bottom of the gas collecting hopper 11 is also provided with a reverse blower 45.

[0035] A filtering device is specially provided inside the body of the gas collecting hopper 11. The device is composed of multiple layers of filtering materials, and each layer of material is optimized for specific flue gas components and particle sizes. The main function of the filtering device is to intercept and capture particulate matter, smoke dust and some harmful substances in the flue gas, so as to ensure that the flue gas entering the subsequent treatment equipment is cleaner. The turnover output pump 42 installed at the bottom of the gas gathering end 41 is a flue gas transmission device, and the output pipe of the treatment inlet pipe 44 extends directly to the inner cavity of the cylinder of the flue gas treatment barrel 12. A reverse blower 45 is also provided at the bottom of the body of the gas collecting hopper 11. The function of the reverse blower 45 is to back-blow and clean the gas collecting hopper 11 when necessary to prevent particulate matter in the flue gas from accumulating and clogging in the hopper body.

[0036] In one embodiment, see Figure 1 、 Figure 4 and Figure 5 Based on the contents of the above embodiment, the specific implementation structure of the flue gas treatment barrel 12 is designed as follows: A positioning bracket 51 and a first drive motor 52 arranged on the positioning bracket 51 are installed on the cylinder body of the flue gas treatment barrel 12. A drive shaft 56 is installed on the driving end of the first drive motor 52. The drive shaft 56 extends into the inner cavity of the cylinder body of the flue gas treatment barrel 12 and is installed with a spiral stirring frame 57. The top of the cylinder body of the flue gas treatment barrel 12 is also respectively provided with a first auxiliary material adding cylinder 53, a second auxiliary material adding cylinder 54 and a treatment barrel output port 55, and the turnover machine pump 24 is installed on the treatment barrel output port 55.

[0037] A positioning bracket 51 is firmly installed on the barrel of the flue gas treatment barrel 12. This design ensures the stability of the barrel during operation and prevents vibration and shaking caused by flue gas flow or stirring operations. The driving end of the first drive motor 52 is connected to the drive shaft 56, which extends into the inner cavity of the barrel of the flue gas treatment barrel 12 through a sealing device. At the end of the drive shaft 56, we installed a spiral stirring frame 57, which utilizes the stirring principle of the spiral structure to achieve uniform and efficient mixing of flue gas and auxiliary materials. A first auxiliary material adding barrel 53 and a second auxiliary material adding barrel 54 are also provided on the top of the barrel of the flue gas treatment barrel 12. These two auxiliary material adding barrels are used to add different auxiliary materials, such as desulfurizers, dust removers, etc., into the flue gas treatment barrel 12 to achieve further purification and treatment of the flue gas.

[0038] In one embodiment, see Figure 1 、 Figure 4 and Figure 6 Based on the contents of the above embodiment, the specific implementation structure of the flue gas descaling barrel 25 is designed as follows: A smoke bleaching operating frame 61 is provided in the barrel body of the smoke bleaching barrel 25, and a second drive motor 62 is provided at the barrel end of the smoke bleaching barrel 25 for driving the smoke bleaching operating frame 61 to rotate; the smoke bleaching barrel 25 is installed as a whole at an angle downward and the height of the input end of the smoke bleaching barrel 25 is lower than the height of the output end of the smoke bleaching barrel 25; a lifting circulation pipe 64 is installed upward at the output end of the smoke bleaching barrel 25, and the lifting circulation pipe 64 is connected to the lifting barrel 28.

[0039] The heat transfer assembly 26 includes a side wing fixing column 101, a reinforcement support frame 102 installed on the side wing fixing column 101, and a circulation pump 103 provided on the reinforcement support frame 102; a pipe body support frame 104 is provided on both sides of the outer periphery of the cylinder body of the flue gas treatment barrel 12, and an input pipe rack 105 and a return pipe rack 106 are respectively installed on the pipe body support frames 104 on both sides, and pipelines are provided in the input pipe rack 105 and the return pipe rack 106. The end is connected to the circulation pump 103 through the connecting conduit 109; the other end of the input pipe rack 105 and the return pipe rack 106 is connected to the external heat exchange system; the top of the reinforced support frame 102 is also provided with a circulation pump 107 and a circulation pipe group 108 installed on the circulation pump 107, and the barrel of the flue gas bleaching machine barrel 25 is provided with a heat energy transfer connecting end 63, and the circulation pipe group 108 is connected to the flue gas bleaching machine barrel 25 through the heat energy transfer connecting end 63.

[0040] The wing fixing columns 101 serve as the supporting structure for the entire heat transfer assembly, capable of withstanding the various forces and pressures during operation. A reinforcement frame 102 is mounted on the wing fixing columns 101 to further reinforce and support components such as the circulation pump 103. The circulation pump 103 is the core device for heat transfer. It is connected to the input pipe rack 105 and the return pipe rack 106 via pipes, forming a closed heat transfer loop. White smoke is primarily composed of water vapor and also contains trace amounts of pollutants such as particulate matter and aerosols. In this embodiment, the circulation pump 107 powers the circulation pipe assembly 108, enabling it to transfer heat energy out of the flue gas de-whitening barrel 25. This heat energy is extracted through the input pipe rack 105 and transported to the heat exchange system for utilization. Simultaneously, the cooling medium, after heat exchange, flows back to the circulation pump 103 through the return pipe rack 106, forming a closed loop. This design not only improves thermal energy utilization efficiency but also reduces energy consumption, aligning with the principles of energy conservation and emission reduction.

[0041] The flue gas de-whitening barrel 25 is installed at an angled downward, with the input end lower than the output end. This design facilitates the natural flow of flue gas within the barrel while leveraging gravity to promote thorough mixing and reaction between the condensate and flue gas. The flue gas temperature is rapidly lowered to below the saturation point, triggering the condensation of water vapor. The condensed water droplets are collected and discharged, while the treated flue gas continues to be discharged. By lowering the flue gas temperature, the water vapor condenses into liquid water, which mixes with the condensate, thereby reducing white smoke emissions.

[0042] In one embodiment of the present invention, see Figure 6 and Figure 7 The smoke bleaching operating frame 61 includes a middle support shaft 91 and a spiral mixing element 92 arranged on the periphery of the middle support shaft 91. The middle support shaft 91 extends from the driving end of the second driving motor 62 to the midpoint of the inner cavity of the flue gas bleaching barrel 25; the spiral mixing element 92 includes a front spiral section 93 and a rear spiral section 94. The front spiral section 93 is wound around the periphery of the middle support shaft 91, and the rear spiral section 94 is integrally connected with the front spiral section 93 and extends to the input end of the flue gas bleaching barrel 25; the inner cavity of the barrel wall of the flue gas bleaching barrel 25 is provided with a plurality of inner barrel wall spiral blocks 95, and the inner barrel wall spiral blocks 95 and the front spiral section 93 are arranged in an interlaced manner.

[0043] The center support shaft 91, serving as the support and rotation axis for the entire work frame, is precisely designed to be half the length of the spiral mixing element 92. One end is securely connected to the drive end of the second drive motor 62, while the other end extends to the midpoint of the inner cavity of the flue gas whitening barrel 25. This design ensures that the center support shaft 91 can stably support the front spiral section 93 while maintaining the stability of the overall structure. As a result, a large space exists in the rear half (input end) of the flue gas whitening barrel 25, where condensate is concentrated. After being introduced, the flue gas preferentially contacts the large amount of condensate, fully mixing and reacting with the condensate or chemical reagents, achieving rapid cooling of the entire unit. The front half (output end) of the flue gas decolorization barrel 25 is supported by the central support shaft 91 on the front spiral section 93, and the inner barrel wall spiral blocks 95 and the front spiral section 93 are arranged in an interlaced manner, forming a complex twisted channel, which has a certain retardation effect on the water, and the formed liquid substance is retained in the flue gas decolorization barrel 25, and the treated flue gas then enters the lifting barrel 28 through the lifting turnover pipe 64.

[0044] In one embodiment, see Figure 6 The rotary pump 24 is provided with a vent chamber 71, with a booster pump 72 connected to its side. A closing valve core 82 is located within the vent chamber 71, and a regulator 81 is also provided on the side of the rotary pump 24 to control the opening and closing of the closing valve core 82. Flue gas is injected from the rotary pump 24 into the flue gas whitening barrel 25 through a one-way valve.

[0045] The flue gas is injected into the flue gas bleaching machine barrel 25 through the one-way valve of the turnover pump 24. The turnover pump 24 is a key component connecting the calcining furnace and the flue gas bleaching machine barrel 25. The ventilation chamber 71, booster pump 72, closing valve core 82 and regulator 81 designed inside it together constitute an efficient flue gas flow and injection speed control system. The ventilation area per unit time of the ventilation chamber 71 can be changed according to actual needs to control the injection speed of the flue gas. When the flue gas needs to be injected quickly, the ventilation area per unit time is the largest, and the flue gas enters the flue gas bleaching machine barrel 25 at a faster speed. When the flue gas needs to be injected slowly, the ventilation area per unit time is the largest, and the flue gas injection speed is reduced accordingly. This precise injection speed control helps to optimize the mixing and reaction process of the flue gas in the flue gas bleaching machine barrel 25 and improve the purification efficiency.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0047] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A calcining furnace flue gas treatment device, comprising a gas collecting hopper (11), a flue gas treatment barrel (12) and an output pump (13), characterized in that: The gas collecting hopper (11) is in a hopper-shaped structure. The gas collecting hopper (11) is externally connected to an air duct group (21) for introducing flue gas. The output end of the air duct group (21) is connected to the top of the hopper body of the gas collecting hopper (11). A circulation tube group (22) is arranged at the bottom of the hopper body of the gas collecting hopper (11). The output end of the circulation tube group (22) is connected to the inner cavity of the flue gas treatment barrel (12). The cylinder body of the flue gas treatment barrel (12) is provided with a mixing assembly (23) and a rotary pump (24) installed on the top of the cylinder body of the flue gas treatment barrel (12); a flue gas deoxidizer barrel (25) is mounted on the side edge of the cylinder body of the flue gas treatment barrel (12); the input end of the flue gas deoxidizer barrel (25) is connected to the rotary pump (24); the output end of the flue gas deoxidizer barrel (25) is externally connected to a lifting barrel (28); the lifting barrel (28) is connected to the output pump (13) via a secondary adsorption barrel (29); A heat energy transfer component (26) is also mounted on the side edge of the barrel of the flue gas treatment barrel (12), and the heat energy transfer component (26) is connected to the flue gas deoxidizer barrel (25) and is externally connected to a water circulation system.

2. The calcining furnace flue gas treatment equipment according to claim 1, characterized in that: The air duct group (21) comprises a first air duct (31) and a second air duct (32), the first air duct (31) and the second air duct (32) are both connected to the air collecting hopper (11), the first air duct (31) and the second air duct (32) are both provided with air inlet heads (33) at the ends of the pipes, and the pipe bodies are both provided with regulating valves (34); The air inlet head (33) of the second air duct (32) is externally connected to a spray branch pipe (37), and the pipe body of the first air duct (31) is also provided with a three-way connecting valve (35), and the three-way connecting valve (35) is connected to the second air duct (32) via a connecting pipe (36).

3. The calcining furnace flue gas treatment equipment according to claim 2, characterized in that: The bottom of the gas collecting hopper (11) is provided with a gas collecting end (41), a circulating output pump (42) installed at the bottom of the gas collecting end (41), and a circulating branch pipe (43) arranged on the circulating output pump (42); a treatment inlet pipe (44) is installed at the end of the circulating branch pipe (43); the output pipe of the treatment inlet pipe (44) extends to the inner cavity of the cylinder of the flue gas treatment barrel (12); A counter-blowing blower (45) is also provided at the bottom of the air collecting hopper (11).

4. The calcining furnace flue gas treatment equipment according to claim 1, characterized in that: A positioning bracket (51) and a first drive motor (52) arranged on the positioning bracket (51) are installed on the barrel of the flue gas treatment barrel (12); a drive shaft (56) is installed on the driving end of the first drive motor (52); the drive shaft (56) extends into the inner cavity of the barrel of the flue gas treatment barrel (12) and is installed with a spiral stirring frame (57); The top of the barrel of the flue gas treatment barrel (12) is also provided with a first auxiliary material adding barrel (53), a second auxiliary material adding barrel (54) and a treatment barrel output port (55), and the turnover machine pump (24) is installed on the treatment barrel output port (55).

5. The calcining furnace flue gas treatment equipment according to claim 4, characterized in that: A smoke bleaching operating frame (61) is arranged in the barrel body of the smoke bleaching machine barrel (25), and a second driving motor (62) for driving the smoke bleaching operating frame (61) to rotate is arranged at the barrel end of the smoke bleaching machine barrel (25); The flue gas bleaching machine barrel (25) is installed as a whole in an oblique downward manner, and the height of the input end of the flue gas bleaching machine barrel (25) is lower than the height of the output end of the flue gas bleaching machine barrel (25); the output end of the flue gas bleaching machine barrel (25) is upwardly installed with a lifting circulation pipe (64), and the lifting circulation pipe (64) is connected to the lifting machine barrel (28).

6. The calcining furnace flue gas treatment equipment according to claim 5, characterized in that: The heat energy transfer assembly (26) comprises a wing fixing column (101), a reinforcement support frame (102) mounted on the wing fixing column (101), and a circulation pump (103) arranged on the reinforcement support frame (102); Tube support frames (104) are provided on both sides of the outer periphery of the barrel of the flue gas treatment barrel (12), and input pipe racks (105) and return pipe racks (106) are respectively installed on the tube support frames (104) on both sides, and pipelines are provided in the input pipe racks (105) and the return pipe racks (106), and the pipe ends of the pipelines are connected to the circulation pump (103) through connecting conduits (109); The other ends of the input pipe rack (105) and the return pipe rack (106) are externally connected to a heat exchange system.

7. The calcining furnace flue gas treatment equipment according to claim 6, characterized in that: A circulation pump (107) and a circulation pipe group (108) mounted on the circulation pump (107) are also provided on the top of the reinforced support frame (102); a heat energy transfer connection end (63) is provided on the barrel of the flue gas bleaching machine barrel (25); and the circulation pipe group (108) is connected to the flue gas bleaching machine barrel (25) via the heat energy transfer connection end (63).

8. The calcining furnace flue gas treatment equipment according to claim 7, characterized in that: The smoke bleaching operation frame (61) comprises a central support shaft (91) and a spiral mixing element (92) arranged on the periphery of the central support shaft (91), wherein the central support shaft (91) extends from the driving end of the second driving motor (62) to the midpoint of the inner cavity of the smoke bleaching machine barrel (25); The spiral mixing element (92) comprises a front spiral section (93) and a rear spiral section (94), wherein the front spiral section (93) is wound around the periphery of the middle support shaft (91), and the rear spiral section (94) is integrally connected to the front spiral section (93) and extends to the input end of the flue gas deoxidizer barrel (25).

9. The calcining furnace flue gas treatment equipment according to claim 8, characterized in that: The inner cavity of the barrel wall of the flue gas deoxidizer barrel (25) is provided with a plurality of inner barrel wall spiral blocks (95), and the inner barrel wall spiral blocks (95) and the front spiral sections (93) are arranged in a staggered manner.

10. The calcining furnace flue gas treatment equipment according to claim 5, characterized in that: A ventilation cavity (71) is provided in the turnover machine pump (24), and a booster pump (72) is externally connected to the side edge of the ventilation cavity (71); A closing valve core (82) is disposed in the ventilation cavity (71), and a regulator (81) for controlling the opening and closing of the closing valve core (82) is also disposed on the side edge of the turnover machine pump (24).

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