A flue gas waste heat power generation device

Abstract

The utility model discloses a flue gas waste heat power generation device relates to tail gas treatment technical field, the utility model discloses a mounting bin is communicated with the air inlet pipe on the positive face upper side of mounting bin, the top of mounting bin is communicated with the feed pipe, the bottom middle part of mounting bin is communicated with the discharge pipe, the pipe body of air inlet pipe, feed pipe and discharge pipe all is equipped with the valve, the inside bottom side of mounting bin is equipped with lime milk, first spoiler is equidistance fixed in the inner top wall of mounting bin, and first spoiler bottom is lower than lime emulsion surface, and the middle structure has U type gap, and the component is used for stirring lime milk. The utility model discloses full stirring of the component to lime milk and the first spoiler effect of the disturbance of flue gas, make flue gas and lime milk fully contact and take place the reaction, significantly improve the desulfurization effect, reduce the emission of pollutant in flue gas, enhance the environmental protection performance.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas treatment equipment, specifically to a flue gas waste heat power generation device. Background Technology

[0002] Industrial production processes generate large amounts of flue gas containing pollutants. Direct emission of this flue gas can cause serious environmental pollution. At the same time, the flue gas contains a certain amount of waste heat. If this waste heat can be recovered and utilized, it will help improve energy efficiency and is in line with the development concept of energy conservation and environmental protection.

[0003] Chinese utility model patent with announcement number CN222480450U proposes a flue gas waste heat power generation device, including a steam turbine and a generator, and also includes a flue gas treatment component. The output end of the flue gas treatment component is connected to the steam input end of the steam turbine, and the drive end of the steam turbine is connected to the input end of the generator.

[0004] By installing the flue gas treatment components, the flue gas can be filtered and desulfurized before being discharged, reducing the pollution of the environment caused by flue gas emissions. In addition, the flue gas filtered by the flue gas treatment components can also cause the water in the lime slurry inside the components to evaporate and form water vapor. This water vapor can be used to drive the rotation of the impeller in the steam turbine, and then cooperate with the generator to generate electricity, realizing the recovery and utilization of waste heat from the flue gas and improving the overall energy utilization efficiency.

[0005] However, this device uses spiral blades to transport and agitate the lime slurry, which cannot adequately stir the lime slurry. Furthermore, the short residence time of the flue gas within the casing prevents sufficient contact and reaction between the flue gas and the lime slurry. This not only affects the desulfurization effect and results in incomplete flue gas treatment, but also significantly limits the energy efficiency and environmental performance of the entire device. Therefore, we propose a flue gas waste heat power generation device to solve these problems. Utility Model Content

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A flue gas waste heat power generation device, comprising:

[0008] The installation chamber has an air inlet pipe connected to the upper front side, a feed pipe connected to the top of the installation chamber, and a discharge pipe connected to the middle of the bottom of the installation chamber. Valves are installed on the pipe bodies of the air inlet pipe, the feed pipe, and the discharge pipe. The bottom inside of the installation chamber is filled with lime slurry.

[0009] The first baffle plate is fixed at equal intervals on the top wall of the installation chamber. The bottom of the first baffle plate is lower than the lime slurry surface, and it has a U-shaped notch in the middle.

[0010] A stirring assembly for stirring lime slurry;

[0011] A support plate is fixed to the back of the installation chamber. A steam turbine is installed on the top of the support plate, and a generator is installed on one side of the steam turbine. The rotor of the steam turbine is connected to the rotor of the generator through a coupling.

[0012] The U-shaped pipe has two ends connected to the top of the installation compartment, and the steam inlet of the steam turbine is connected to the U-shaped pipe.

[0013] Furthermore, the material feeding assembly includes a mounting rod installed between the inner sidewalls of the mounting chamber. The mounting rod slides through a U-shaped notch. A drive motor is installed on one side of the mounting chamber. The output shaft of the drive motor is connected to one end of the mounting rod. Material feeding plates are fixedly arranged in a ring array on the surface of the mounting rod between adjacent first spoilers.

[0014] Furthermore, the height of the mounting rod is lower than the height of the lime slurry surface.

[0015] Furthermore, a second baffle is vertically fixed on both sides of the surface of the material feeding plate.

[0016] Furthermore, the bottom of the installation compartment is shaped like a square bucket.

[0017] Furthermore, transparent observation windows are provided on both sides of the front of the installation compartment.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model, by setting a first baffle, allows flue gas to pass through its U-shaped opening, changing the flow path of the flue gas and extending its residence time in the installation chamber. In conjunction with the material feeding assembly, the material feeding plate, driven by the installation rod, stirs the lime slurry, causing the lime slurry to tumble and fully contact the flue gas, greatly improving the reaction efficiency. A second baffle is also vertically fixed on both sides of the material feeding plate surface to further enhance the disturbance effect on the lime slurry. In addition, the waste heat of the flue gas is used to evaporate the water in the lime slurry to form steam for power generation, effectively recovering the originally wasted waste heat and improving the comprehensive utilization efficiency of energy. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is another three-dimensional structural schematic diagram of this utility model;

[0022] Figure 3 This is a top view of the present invention;

[0023] Figure 4 This is a utility model Figure 3 Schematic diagram of cross-section along the AA direction.

[0024] Reference numerals: 1. Installation chamber; 101. Transparent observation window; 2. Air inlet pipe; 3. Feed pipe; 4. Discharge pipe; 5. First spoiler; 501. U-shaped notch; 6. Material feeding assembly; 601. Mounting rod; 602. Drive motor; 603. Material feeding plate; 604. Second spoiler; 7. Support plate; 8. Steam turbine; 9. Generator; 10. U-shaped pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] This application provides a flue gas waste heat power generation device, mainly to solve the problems of existing technologies that use spiral blades to transport and stir lime slurry, which cannot fully stir the lime slurry, and the short residence time of flue gas in the shell, preventing the flue gas from fully contacting and reacting with the lime slurry. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-4 Please provide a detailed explanation:

[0027] A flue gas waste heat power generation device, comprising:

[0028] Installation chamber 1, with an air inlet pipe 2 connected to the upper front side of installation chamber 1, a feed pipe 3 connected to the top of installation chamber 1, and a discharge pipe 4 connected to the middle of the bottom of installation chamber 1. Valves are installed on the pipe bodies of air inlet pipe 2, feed pipe 3 and discharge pipe 4. Lime slurry is installed inside the bottom side of installation chamber 1.

[0029] The first baffle plate 5 is fixed at equal intervals on the top wall of the installation chamber 1. The bottom of the first baffle plate 5 is lower than the lime slurry surface, and there is a U-shaped notch 501 in the middle.

[0030] The material feeding assembly 6 is used to stir the lime slurry. The material feeding assembly 6 includes a mounting rod 601 installed between the inner side walls of the installation chamber 1. The mounting rod 601 slides through the U-shaped notch 501. A drive motor 602 is installed on one side of the installation chamber 1. The output shaft of the drive motor 602 is connected to one end of the mounting rod 601. Material feeding plates 603 are fixedly arranged in a ring array on the surface of the mounting rod 601 between adjacent first baffles 5.

[0031] The bearing plate 7 is fixed on the back of the installation chamber 1. A steam turbine 8 is installed on the top of the bearing plate 7. A generator 9 is installed on one side of the steam turbine 8, and the rotor of the steam turbine 8 is connected to the rotor of the generator 9 through a coupling.

[0032] The U-shaped pipe 10 has two ends connected to the top of the installation chamber 1, and the steam inlet of the steam turbine 8 is connected to the U-shaped pipe 10.

[0033] Workflow Description:

[0034] Preparation stage: Open the valve of feed pipe 3 and inject an appropriate amount of lime slurry into the bottom of the installation chamber 1 through feed pipe 3. After completion, close the valve of feed pipe 3.

[0035] Flue gas introduction and reaction stage: The valve of the inlet pipe 2 is opened, and the flue gas containing pollutants enters the middle of the installation chamber 1 through the inlet pipe 2. During the continuous delivery of flue gas, the flue gas passes through the U-shaped openings of multiple first baffles 5 in sequence. At the same time, the drive motor 602 is started, and the output shaft of the drive motor 602 drives the installation rod 601 to rotate. The material-pulling plate 603 located on the surface of the installation rod 601 between adjacent first baffles 5 rotates accordingly. Since the height of the installation rod 601 is lower than the height of the lime slurry liquid, part of the material-pulling plate 603 is inside the lime slurry and part is above the liquid surface. During the rotation of the material-pulling plate 603, the lime slurry is driven to tumble in the installation chamber 1, which promotes full contact and reaction between the flue gas and the lime slurry.

[0036] Power generation stage: The heat released during the reaction of flue gas and lime slurry causes the moisture in the installation chamber 1 to evaporate and form water vapor. The water vapor enters the steam inlet of the steam turbine 8 through the U-shaped pipe 10, driving the impeller of the steam turbine 8 to rotate. The rotor of the steam turbine 8 drives the rotor of the generator 9 to rotate through the coupling, thereby realizing power generation.

[0037] Discharge stage: After the reaction is completed, open valve 4 of discharge pipe to discharge the reacted lime slurry and other products from discharge pipe 4.

[0038] The device, by setting a first baffle 5, allows flue gas to pass through its U-shaped opening, changing the flow path of the flue gas and extending its residence time in the installation chamber 1. In conjunction with the material feeding assembly 6, the material feeding plate 603, driven by the mounting rod 601, stirs the lime slurry, causing it to tumble and fully contact the flue gas, greatly improving the reaction efficiency. The material feeding plate 603 is also vertically fixed on both sides of its surface with a second baffle 604, further enhancing the disturbance effect on the lime slurry. In addition, the waste heat of the flue gas is used to evaporate the water in the lime slurry to form steam for power generation, effectively recovering the waste heat that was originally wasted and improving the overall energy utilization efficiency.

[0039] like Figure 4As shown, in some embodiments, the height of the mounting rod 601 is lower than the height of the lime slurry surface. More specifically, when the mounting rod 601 is below the lime slurry surface, the material-pulling plate 603 fixed to the rod will be in a state of "partially immersed in the liquid and partially exposed above the liquid surface". When the drive motor 602 drives the mounting rod 601 to rotate, the part of the material-pulling plate 603 immersed in the lime slurry will directly agitate the liquid, forming a violent vortex and tumbling, causing the lime slurry to generate vertical convection; while the part exposed above the liquid surface will throw the splashed lime slurry droplets into the air, forming a "liquid mist" effect with the rising flue gas. This dual disturbance allows the flue gas to fully contact the tumbling liquid surface and react with the suspended droplets when passing through the U-shaped opening of the first baffle 5, greatly increasing the gas-liquid contact area.

[0040] like Figure 4 As shown, in some embodiments, second baffles 604 are vertically fixed on both sides of the surface of the feeding plate 603. More specifically, they work in conjunction with the first baffle 5 to form a "three-dimensional baffle network." The first baffle 5 guides the flue gas to flow in a tortuous manner through a U-shaped notch, while the second baffle 604 creates longitudinal disturbances in a direction perpendicular to the rotation plane of the feeding plate 603. When the lime slurry is pushed towards the first baffle 5 by the feeding plate 603, the second baffle 604 forces some of the liquid to change its flow direction, forming oblique or vertical convection. This interacts with the lateral backflow formed by the obstruction of the first baffle 5, constructing a three-dimensional baffle network. This network can break the "laminar contact" mode between the flue gas and the lime slurry, allowing them to continuously collide and mix in a complex flow field, significantly improving mass transfer efficiency.

[0041] like Figure 1 As shown, in some embodiments, the bottom of the installation chamber 1 is shaped like a square bucket. More specifically, the inclined sidewalls of the square bucket-shaped bottom form a natural guiding structure. When the precipitate (such as calcium sulfate, calcium sulfite, etc.) generated by the reaction of flue gas and lime milk is released from the suspension, it will slide along the inclined sidewalls towards the center of the bottom under the action of gravity. Compared with the problem of precipitate easily accumulating in corners in the traditional flat-bottom structure, this design with a wide top and narrow bottom can make the precipitate automatically gather in the discharge pipe 4 area at the center of the bottom, avoiding cleaning dead corners caused by the dispersion and residue of precipitate, and reducing the frequency and difficulty of manual cleaning from the root.

[0042] like Figure 1As shown, in some embodiments, transparent observation windows 101 are provided on both sides of the front of the installation chamber 1. More specifically, the transparent observation windows 101 allow the operator to directly observe the liquid level of the lime slurry, the tumbling state, and the contact reaction between the flue gas and the lime slurry in the installation chamber 1. As the reaction proceeds, the sediment (such as calcium sulfate precipitate) at the bottom of the installation chamber 1 will gradually increase. The operator can monitor the accumulation height of the sediment in real time through the observation windows: when the sediment approaches the inclined turning point of the bottom of the square bucket, the discharge pipe 4 valve can be opened in advance to avoid excessive accumulation of sediment that may block the discharge port or affect the effective reaction space of the lime slurry.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flue gas waste heat power generation device characterized by comprising: include: The installation chamber (1) has an air inlet pipe (2) connected to the upper front side, a feed pipe (3) connected to the top of the installation chamber (1), and a discharge pipe (4) connected to the middle bottom of the installation chamber (1). Valves are installed on the pipe bodies of the air inlet pipe (2), feed pipe (3) and discharge pipe (4). Lime slurry is installed inside the bottom side of the installation chamber (1). The first baffle (5) is fixed at equal intervals on the top wall of the installation chamber (1). The bottom of the first baffle (5) is lower than the lime slurry surface, and there is a U-shaped notch in the middle. The material feeding assembly (6) is used to stir the lime slurry. A bearing plate (7) is fixed on the back of the installation chamber (1). A steam turbine (8) is installed on the top of the bearing plate (7). A generator (9) is installed on one side of the steam turbine (8). The rotor of the steam turbine (8) is connected to the rotor of the generator (9) through a coupling. The U-shaped pipe (10) has two ends connected to the top of the installation chamber (1), and the steam inlet of the steam turbine (8) is connected to the U-shaped pipe (10).

2. The flue gas waste heat power generation device according to claim 1, characterized in that, The material feeding assembly (6) includes a mounting rod (601) installed between the inner side walls of the mounting chamber (1). The mounting rod (601) slides through a U-shaped notch. A drive motor (602) is installed on one side of the mounting chamber (1). The output shaft of the drive motor (602) is connected to one end of the mounting rod (601). Material feeding plates (603) are fixedly arranged in a ring array on the surface of the mounting rod (601) between adjacent first spoilers (5).

3. The flue gas waste heat power generation device according to claim 2, characterized in that, The height of the mounting rod (601) is lower than the height of the lime slurry surface.

4. The flue gas waste heat power generation device according to claim 2, characterized in that, The material feeding plate (603) has a second baffle plate (604) fixed vertically on both sides of its surface.

5. A flue gas waste heat power generation device according to claim 1, characterized in that, The bottom of the installation compartment (1) is shaped like a square bucket.

6. A flue gas waste heat power generation device according to claim 1, characterized in that, The installation compartment (1) has transparent observation windows (101) on both sides of its front.

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