Calcining furnace flue gas treatment equipment

Abstract

The present invention relates to the field of flue gas treatment technology, specifically a calcining furnace flue gas treatment equipment, including a gas collecting hopper, a flue gas treatment barrel and an output pump; the gas collecting hopper is externally connected to an air duct group for introducing flue gas, the output end of the air duct group is connected to the top of the gas collecting hopper, the bottom of the gas collecting hopper is provided with a turnover pipe group, and the output end of the turnover pipe group is connected to the inner cavity of the flue gas treatment barrel; the barrel of the flue gas treatment barrel is provided with a mixing component and a turnover pump, the side edge of the barrel of the flue gas treatment barrel is provided with a flue gas bleaching machine barrel, and the input end of the flue gas bleaching machine barrel is connected to the turnover pump. A heat energy transfer component is also provided on the side edge of the barrel of the flue gas treatment barrel, and the heat energy transfer component is connected to the flue gas bleaching machine barrel and is externally connected to a water circulation system. The present invention can efficiently remove pollutants in flue gas through the synergistic effect of the gas collecting hopper, the flue gas treatment barrel and the multi-stage purification equipment, and also realizes the recycling of heat energy, which is in line with the green and low-carbon development concept.

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 they are not treated, they will cause serious pollution to the environment.

[0003] The high-efficiency calcining furnace flue gas treatment equipment in the prior art generally includes a chassis, a support frame, an air inlet pipe, an air outlet pipe and a control valve, and injects the flue gas into the slurry of the desulfurizer to achieve desulfurization through an oxidation reaction; however, white smoke and water vapor often appear in the process of flue gas desulfurization treatment, 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 calcining furnace 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:

[0006] A calcining furnace flue gas treatment equipment 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 group for introducing flue gas, the output end of the air duct group is connected to the top of the gas collecting hopper, the bottom of the gas collecting hopper is provided with a turnover pipe group, the output end of the turnover pipe group is connected to the inner cavity of the flue gas treatment barrel; the cylinder of the flue gas treatment barrel is provided with a mixing component and a turnover pump installed on the top of the cylinder of the flue gas treatment barrel, the side edge of the cylinder of the flue gas treatment barrel is provided with a flue gas bleaching machine barrel, the input end of the flue gas bleaching machine barrel is connected to the turnover pump, the output end of the flue gas bleaching machine barrel is externally connected to a lifting machine barrel, and the lifting machine barrel is connected to the output pump through a secondary adsorption machine barrel. A heat energy transfer component is also provided on the side edge of the cylinder of the flue gas treatment barrel, the heat energy transfer component is connected to the flue gas bleaching machine barrel and is externally connected to a water circulation system.

[0007] As a further solution of the present invention: the air duct group includes a first air duct and a second air duct, the first air duct and the second air duct are both connected to the air collecting hopper, the pipe ends of the first air duct and the second air duct are both provided with air inlet heads and the pipe bodies are both provided with regulating valves; the air inlet head of the second air duct is externally connected to a spray branch pipe, and the pipe body of the first air duct is also provided with a three-way junction valve, and the three-way junction valve is connected to the second air duct through a junction pipe.

[0008] As a further solution of the present invention: a gas gathering end, a turnover output pump installed at the bottom of the gas gathering end, and a turnover branch pipe arranged on the turnover output pump are provided at the bottom of the gas gathering hopper, a treatment inlet pipe is installed at the pipe end of the turnover branch pipe, the output pipe of the treatment inlet pipe extends to the inner cavity of the cylinder of the flue gas treatment barrel, and a reverse blower is also provided at the bottom of the gas collecting hopper.

[0009] 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, 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; a first auxiliary material adding cylinder, a second auxiliary material adding cylinder and a treatment barrel output port are also respectively arranged on the top of the cylinder body of the flue gas treatment barrel, and the turnover machine pump is installed on the treatment barrel output port.

[0010] As a further solution of the present invention: a smoke bleaching operating frame is arranged in the barrel body of the smoke bleaching barrel, and a second driving motor for driving the smoke bleaching operating frame to rotate is arranged 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 circulation pipe is installed upward at the output end of the smoke bleaching barrel, and the lifting circulation pipe is connected with the lifting barrel.

[0011] 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 arranged 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 arranged 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 a heat exchange system.

[0012] As a further solution of the present invention: a circulation pump and a circulation pipe group installed on the circulation pump are also arranged on the top of the reinforced support frame, a heat energy transfer connecting end is arranged 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.

[0013] As a further solution of the present invention: the smoke elimination operating 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 smoke elimination barrel; the spiral mixing element includes a front spiral segment and a rear spiral segment, and the front spiral segment is wound around the periphery of the middle support shaft, and the rear spiral segment is integrally connected with the front spiral segment and extends to the input end of the flue gas smoke elimination barrel.

[0014] As a further solution of the present invention: the inner cavity of the barrel wall of the flue gas deoxidizer 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.

[0015] As a further solution of the present invention: a ventilation cavity is arranged in the turnover machine pump, and a booster pump is externally connected to the side edge of the ventilation cavity; a closing valve core is arranged in the ventilation cavity, and a regulator for controlling the opening and closing of the closing valve core is also arranged on the side edge of the turnover machine pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The gas collecting hopper is the starting part of the system. Its hopper design effectively gathers and guides the flue gas of the calciner. Through the air duct group, the hopper is connected to the flue gas outlet of the calciner to ensure smooth introduction of flue gas. The air duct group contains multiple branch pipes to enhance the flexibility and adaptability of the system, while the turnover pipe group ensures smooth and leak-free transfer of flue gas. The flue gas treatment barrel is filled with a treatment solvent, such as a limestone-gypsum wet desulfurizer, which reacts with harmful substances in the flue gas to produce gypsum to achieve desulfurization. The mixing components on the barrel promote the full mixing of the solvent and the flue gas through mechanical or fluid dynamic design. The treated flue gas is pumped out by the turnover pump and sent to the flue gas dewhitening barrel to remove harmful substances carried by water vapor and reduce "white smoke". Subsequently, the flue gas enters the lifting barrel and is transported to the secondary adsorption barrel using air pressure or mechanical lifting principles. The high-efficiency adsorption materials in the barrel, such as activated carbon and molecular sieves, further remove tiny particles and harmful gases to ensure that the flue gas emissions meet the standards. To improve energy efficiency, a heat transfer component is installed on the side of the flue gas treatment barrel, connected to the flue gas deoxidizer barrel, and connected to an external water circulation system. This design recycles the heat energy of the flue gas and transfers it to the circulating water through a heat exchanger, which not only reduces the temperature but also realizes energy reuse, thereby improving the energy efficiency of the system.

[0018] The present invention can efficiently remove pollutants from flue gas and significantly improve emission quality through the synergistic effect of the gas collecting hopper, flue gas treatment barrel and multi-stage purification equipment. The combination of the heat transfer component and the water circulation system not only effectively reduces the flue gas temperature and eliminates the white smoke phenomenon, but also realizes the recycling of heat energy, which is in line with the green and low-carbon development concept. The system effectively purifies the flue gas through the steps of gas collection, treatment, white smoke elimination, lifting and adsorption, while recycling heat energy to achieve efficient and environmentally friendly flue gas treatment.

[0019] 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

[0020] The drawings herein are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and are used together with the specification to explain the principles of the present application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0021] 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;

[0022] Figure 2 A schematic structural diagram of an air duct assembly provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a gas collecting hopper from a bottom perspective provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a flue gas treatment barrel provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a mixing assembly provided in an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the cross-sectional structure of a flue gas descaling barrel provided in an embodiment of the present invention;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of area A in the middle.

[0028] In the figure: 11, gas collecting hopper; 12, flue gas treatment barrel; 13, output pump; 21, air duct group; 22, turnover pipe group; 23, mixing assembly; 24, turnover pump; 25, flue gas de-whitening barrel; 26, heat energy transfer assembly; 27, output end outer bracket; 28, lifting barrel; 29, secondary adsorption barrel; 31, first air duct; 32, second air duct; 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, reverse 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 frame; 61. De-whitening operation frame; 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 circulation pump; 104. Pipe body support frame; 105. Input pipe rack; 106. Reflux pipe rack; 107. Circulation pump; 108. Circulation pipe group; 109. Connecting conduit. DETAILED DESCRIPTION

[0029] 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.

[0030] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0032] 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; 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 arranged 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 arranged on the cylinder body of the flue gas treatment barrel 12, a flue gas deoxidizer barrel 25 is arranged 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.

[0033] First, the gas collecting hopper 11 is the starting collection component of the entire system. Its bucket-shaped structure design can effectively collect and guide the flue gas from the calciner. The top of the gas collecting hopper 11 is connected to the flue gas outlet of the calciner through the air duct group 21 to ensure that the flue gas can be smoothly and efficiently introduced into the gas collecting hopper 11. The air duct group 21 includes multiple branch pipes to adapt to flue gas sources at different locations or with different emission volumes, thereby enhancing the flexibility and adaptability of the system. At the same time, the design of the turnover pipe group 22 needs to consider the flow and pressure of the flue gas to ensure that the flue gas can be transferred smoothly and without leakage.

[0034] The flue gas treatment barrel 12 is filled with treatment solvents, which can react chemically with harmful substances in the flue gas to achieve the purpose of purifying the flue gas. In this embodiment, a limestone-gypsum wet desulfurizer can be used, and the alkalinity of lime milk can be used to react chemically with sulfur dioxide (SO2) in the flue gas to generate calcium sulfite (CaSO3), which is then oxidized to generate calcium sulfate (CaSO4), i.e. gypsum, to achieve the purpose of desulfurization. A mixing component 23 is installed on the barrel, which can fully mix the treatment solvent with the flue gas through a specific mechanical or fluid dynamic design. At the top of the flue gas treatment barrel 12, we installed a turnover pump 24, which is responsible for extracting the treated flue gas and transporting it to the flue gas desulfurization barrel 25.

[0035] The lifting barrel 28 and the secondary adsorption barrel 29 are vertically mounted on the output end outer bracket 27. The main function of the flue gas de-whitening barrel 25 is to remove harmful substances carried by water vapor in the flue gas to reduce the "white smoke" phenomenon and improve the emission quality. Its input end is connected to the turnover pump 24 to receive the treated flue gas. After de-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, molecular sieves, etc., which are used to further remove tiny particles and harmful gases in the flue gas to ensure that the final flue gas discharged meets national or local environmental protection standards.

[0036] In addition, in order to further improve the energy efficiency of the equipment, a heat transfer component 26 is installed on the side of the flue gas treatment barrel 12. The component is connected to the flue gas deoxidizer barrel 25 and is externally connected to a water circulation system. This design aims to recycle the heat energy in the flue gas and transfer the heat energy to the circulating water through a heat exchanger or other means, which not only reduces the flue gas temperature, but also realizes the reuse of energy and improves the energy efficiency of the entire system.

[0037] This embodiment can effectively remove pollutants in the flue gas and significantly improve the emission quality through the synergistic effect of the gas collecting hopper 11, the flue gas treatment barrel 12 and the multi-stage purification equipment. The combination of the heat transfer component 26 and the water circulation system not only effectively reduces the flue gas temperature and eliminates the white smoke phenomenon, but also realizes the recycling of heat energy and reduces energy consumption, which is in line with the green and low-carbon development concept.

[0038] The entire system of this embodiment effectively purifies the flue gas through the steps of gas collection, treatment, whitening, lifting and adsorption, while recycling heat energy to achieve efficient and environmentally friendly flue gas treatment.

[0039] In one embodiment, see Figure 1 , Figure 2 and Figure 3 Based on the contents of the above embodiment, the specific implementation structure of the air duct assembly 21 and the air collecting bucket 11 is designed as follows:

[0040] The air duct group 21 includes a first air duct 31 and a second air duct 32, both of which are connected to the air collecting hopper 11, and both ends of the first air duct 31 and the second air duct 32 are 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 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 through a connecting pipe 36.

[0041] The first air duct 31 is designed to specifically introduce flue gas with low dust content. This type of flue gas usually comes from certain specific parts of the calciner, such as the upper part or the tail of the furnace, and its particle concentration is relatively low. The air inlet head 33 of the first air duct 31 adopts an optimized design to ensure that the flue gas can smoothly enter the gas collecting hopper 11 while reducing the air flow resistance. The regulating valve 34 on the pipe body allows the operator to adjust the flow of the flue gas according to actual needs to achieve more precise control. The second air duct 32 is responsible for introducing flue gas with high dust content. This type of flue gas usually comes from the combustion area of ​​the calciner and contains a large amount of particulate matter and fly ash. In order to reduce the risk of wear and blockage of these particulates on subsequent processing equipment, a spray branch 37 is connected to the air inlet head 33 of the second air duct 32. The spray branch 37 can spray an appropriate amount of water mist to moisten and agglomerate the particulate matter in the flue gas, making it easier to capture and process. At the same time, the addition of water mist can also reduce the temperature of the flue gas and improve the stability of the subsequent processing equipment.

[0042] A three-way confluence valve 35 is also provided on the pipe body of the first air duct 31, which is connected to the second air duct 32 through a confluence pipe 36 to achieve interconnection between the two pipes. When necessary, the operator can open the three-way confluence valve 35 to mix the flue gas in the first air duct 31 and the second air duct 32. The purpose of this design is to flexibly adjust the ratio of the flue gas in the two pipes according to the actual dust content and treatment requirements of the flue gas to achieve the best treatment effect.

[0043] 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 pipe 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 reverse blower 45 is also provided at the bottom of the gas collecting hopper 11.

[0044] A filtering device is specially arranged inside the bucket 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 collecting end 41 is a flue gas transmission device, and the output pipeline 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 arranged at the bottom of the bucket 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 the particulate matter in the flue gas from accumulating and clogging in the bucket body.

[0045] 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:

[0046] 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, and 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.

[0047] 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 further purify and treat the flue gas.

[0048] 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:

[0049] A smoke bleaching operating frame 61 is arranged in the barrel body of the smoke bleaching 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 barrel 25; the smoke bleaching barrel 25 is installed obliquely downward as a whole, 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.

[0050] The heat transfer assembly 26 includes a side wing fixing column 101, a reinforcement frame 102 installed on the side wing fixing column 101, and a circulation pump 103 installed on the reinforcement frame 102; the outer periphery of the cylinder body of the flue gas treatment barrel 12 is provided with a pipe body frame 104 on both sides, and the pipe body frame 104 on both sides is respectively installed with an input pipe rack 105 and a return pipe rack 106, and the input pipe rack 105 and the return pipe rack 106 are both provided with pipelines and the pipes of the pipelines are The end is connected to the circulation pump 103 through the connecting conduit 109; the other ends of the input pipe rack 105 and the return pipe rack 106 are externally connected to the 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.

[0051] The wing fixed column 101 serves as the supporting structure of the entire heat transfer assembly and can withstand various forces and pressures during the operation of the equipment. The strengthening frame 102 is installed on the wing fixed column 101 to further reinforce and support components such as the circulation pump 103. The circulation pump 103 is the core equipment of heat transfer. It is connected to the input pipe rack 105 and the return pipe rack 106 through pipelines to form a closed heat transfer loop. The main component of white smoke is water vapor, and it also contains trace amounts of pollutants such as particulate matter and aerosols. In this embodiment, the circulation pump 107 provides power for the circulation pipe group 108, so that it can transfer heat energy out of the flue gas de-whitening barrel 25, and the heat energy is extracted through the input pipe rack 105 and transported to the heat exchange system for utilization. At the same time, the cooling medium after heat exchange flows back to the circulation pump 103 through the return pipe rack 106 to form a closed cycle. This design not only improves the utilization efficiency of thermal energy, but also reduces energy consumption, which is in line with the concept of energy conservation and emission reduction.

[0052] The flue gas de-whitening barrel 25 is installed obliquely downward as a whole, and the height of its input end is lower than that of the output end. This design helps the flue gas to flow naturally in the barrel, and at the same time can use gravity to promote the full mixing and reaction of condensate and flue gas. The flue gas temperature is quickly reduced to below the saturation point, thereby inducing 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 is condensed into liquid water and mixed into the condensate, thereby reducing the emission of white smoke.

[0053] In one case of this embodiment, see Figure 6 and Figure 7The smoke bleaching operating frame 61 includes 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 includes a front spiral segment 93 and a rear spiral segment 94, wherein the front spiral segment 93 is wound around the periphery of the central support shaft 91, and the rear spiral segment 94 is integrally connected with the front spiral segment 93 and extends to the input end of the smoke bleaching machine barrel 25; the inner cavity of the barrel wall of the smoke bleaching machine barrel 25 is provided with a plurality of inner barrel wall spiral blocks 95, and the inner barrel wall spiral blocks 95 are arranged in a staggered manner with the front spiral segment 93.

[0054] The middle support shaft 91 serves as the support and rotation axis of the entire operating frame. Its length is precisely designed to be half the length of the spiral mixer 92, and one end is firmly connected to the driving end of the second drive motor 62, and the other end extends to the midpoint of the inner cavity of the flue gas deoxidizer barrel 25. This design ensures that the middle support shaft 91 can stably support the front spiral section 93, but its overall structure remains stable; therefore, there is a large space in the second half of the flue gas deoxidizer barrel 25 (input end), and the condensate is concentrated in this area. After the flue gas is introduced, it first contacts with a large amount of condensate, and the flue gas and the condensate or chemical reagent are fully mixed and reacted to achieve rapid overall cooling. The front half (output end) of the flue gas deoxidizer barrel 25 is supported by the middle support shaft 91, and the inner barrel wall spiral block 95 and the front spiral segment 93 are arranged in an alternating manner, forming a complex twisted channel, which has a certain retardation effect on the water liquid, and the formed liquid substance is retained in the flue gas deoxidizer barrel 25, and the treated flue gas then enters the lifting barrel 28 through the lifting circulation pipe 64.

[0055] In one embodiment, see Figure 6 The rotary pump 24 is provided with a vent cavity 71, and the side edge of the vent cavity 71 is also connected to a booster pump 72; a closing valve core 82 is provided in the vent cavity 71, and a regulator 81 for controlling the opening and closing of the closing valve core 82 is also provided on the side edge of the rotary pump 24. The flue gas is injected into the flue gas bleaching machine barrel 25 through a one-way valve in the rotary pump 24.

[0056] The flue gas is injected into the flue gas bleaching machine barrel 25 through the one-way valve in the rotary pump 24. The rotary 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.

[0057] 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes 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; 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); 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).

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: 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.

5. The calcining furnace flue gas treatment equipment according to claim 4, 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).

6. The calcining furnace flue gas treatment equipment according to claim 1, 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).

7. The calcining furnace flue gas treatment equipment according to claim 6, 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.

8. The calcining furnace flue gas treatment equipment according to claim 1, 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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