A semi-dry deacidification reaction tower ash control device

Abstract

The utility model relates to the technical field of ash cleaning, disclose a kind of semi-dry method deacidification reaction tower ash control device, including patch type load cell, rapping device and PLC controller, the patch type load cell is installed on the reaction tower body support frame and is used to detect the ash weight in reaction tower, the rapping device with the reaction tower body contact is used to rapping reaction tower body to realize the ash in reaction tower to fall off, the PLC controller with the patch type load cell and the rapping device are connected, to receive the weight signal of the patch type load cell feedback and control the rapping device work.The utility model provides a kind of semi-dry method deacidification reaction tower ash control device, the weight data of reaction tower body by patch type load cell, can more accurately characterize ash weight;And patch type load cell can be installed later, beneficial to the reconstruction implementation on the project that has been put into production.

Description

Technical Field

[0001] This utility model relates to the field of ash removal technology, and in particular to an ash control device for a semi-dry deacidification reaction tower. Background Technology

[0002] In waste-to-energy projects, ash removal from semi-dry desulfurization reaction towers has long been a challenging problem for operators and maintenance teams. Ash removal from semi-dry desulfurization reaction towers is affected by numerous factors, including but not limited to load fluctuations leading to a decrease in flue gas temperature entering the tower, changes in the flow field within the tower due to combustion conditions, and the impact of atomizer atomization effects. Therefore, it is difficult to accurately predict ash accumulation over time. Furthermore, the increase in ash accumulation can easily lead to large-scale ash collapse, and the instantaneous increase in ash volume has an extremely adverse impact on the subsequent ash conveying system.

[0003] The main challenges in solving the problem of ash accumulation in reaction towers are: 1) Detecting the ash accumulation inside the tower. Ash accumulation points are affected by various factors such as flow field, temperature, and humidity (resulting in significant randomness), and the large amount of floating ash inside the reaction tower makes radar and ultrasonic level measurements ineffective. Other detection devices on the market are mostly localized measurements; for example, rotary paddle, radio frequency admittance, and non-circuit nuclear detectors have limited application in large-volume reaction towers. 2) Limitations and timing of ash removal capabilities. Currently, all reaction towers are equipped with ash removal equipment such as air cannons, but without monitoring the ash accumulation inside the tower, it's impossible to confirm whether the ash removal equipment is effective or under what operating conditions it should be used. Summary of the Invention

[0004] The purpose of this utility model is to provide an ash accumulation control device that can more accurately reflect the ash accumulation in the tower and verify the cleaning effect, and to provide at least a beneficial option or create conditions for solving one or more technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A semi-dry deacidification reaction tower ash accumulation control device includes a patch-type weighing sensor, a vibrator, and a PLC controller. The patch-type weighing sensor is installed on the tower support structure to detect the weight of the ash accumulation inside the reaction tower. The vibrator contacts the tower body to vibrate the tower body and dislodge the ash accumulation inside the reaction tower. The PLC controller is connected to the patch-type weighing sensor and the vibrator to receive the weight signal fed back by the patch-type weighing sensor and control the operation of the vibrator.

[0007] More preferably, the support structure of the reaction tower body is a channel steel bracket, and each support leg of the channel steel bracket is provided with a corresponding patch-type weighing sensor.

[0008] More preferably, the patch-type load cell measures weight using a resistive strain gauge, which is mounted on the outer surface of the support leg.

[0009] More preferably, a display instrument is connected to the patch-type load cell. The display instrument is used to display the weighing data and send the weight signal to the PLC controller in the form of analog output.

[0010] More preferably, the vibrator is a pneumatic hammer, which is installed at the ash hopper section of the reaction tower body.

[0011] More preferably, there are at least two vibrators, each vibrating the reaction tower body from a different direction.

[0012] More preferably, a vibration controller is connected to the vibrator to control the vibration force and vibration frequency of the vibrator.

[0013] More preferably, the vibration controller and the PLC controller are the same component or different components.

[0014] The technical solution provided by this utility model has at least the following technical effects or advantages.

[0015] I. A patch-type load cell generally consists of an elastic body, strain gauges attached to specific deformation locations on the elastic body, and peripheral circuitry. An external force applied to the sensor causes deformation of the elastic body, resulting in tensile or contractile deformation proportional to the force at a specific deformation location. This causes a change in the electrical parameters of the strain gauge attached to that location. The peripheral circuitry detects the degree of change in the strain gauge's electrical parameters to determine the magnitude of the external force applied to the sensor, ultimately achieving the measurement of physical quantities such as force and weight. This utility model provides a semi-dry desulfurization reaction tower ash accumulation control device. Using a patch-type load cell to reflect the weight data of the tower body, it can accurately characterize the ash accumulation weight. Furthermore, the patch-type load cell can be installed later, facilitating retrofitting of existing projects. In addition, this ash accumulation control device can be used for daily operation monitoring of the tower body quality, verification of the rapping ash removal effect, and as a reference for pre-shutdown maintenance planning.

[0016] Second, by controlling the excitation force and vibration frequency of the vibrator, multiple operating modes of the vibrator can be achieved. By comparing the operating modes with the changes in the tower mass, the vibration mode can be confirmed and the amount of ash falling can be effectively controlled, thereby controlling the ash conveying amount of the reaction tower.

[0017] Other beneficial effects or technical advantages of this invention will become more apparent in the following description or practice. Attached Figure Description

[0018] Figure 1 The diagram shows the structure of the ash accumulation control device for the semi-dry deacidification reaction tower provided by this utility model.

[0019] Figure 2 The diagram shows the structure of a semi-dry deacidification reaction tower.

[0020] Figure 3 The diagram shows the installation of a patch-type load cell.

[0021] Explanation of the reference numerals in the attached figures.

[0022] 1: Surface mount load cell; 2: Vibrator; 3: PLC controller; 4: Reactor tower support structure; 5: Reactor tower body; 6: Display instrument; 7: Power air source.

[0023] 401: Support leg.

[0024] 501: Ash hopper section. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention.

[0027] Reference Figure 1 As shown, a semi-dry deacidification reaction tower ash accumulation control device includes a patch-type weighing sensor 1, a vibrator 2, and a PLC controller 3. The patch-type weighing sensor 1 is installed on the reaction tower support structure 4 to detect the weight of the ash accumulation inside the reaction tower. The vibrator 2 contacts the reaction tower body 5 to vibrate the reaction tower body 5 to remove the ash accumulation inside the reaction tower. The PLC controller 3 is connected to the patch-type weighing sensor 2 and the vibrator 3 to receive the weight signal fed back by the patch-type weighing sensor 2 and control the operation of the vibrator 3.

[0028] Combination Figure 2 , Figure 3As shown, the reactor tower support structure 4 is preferably a channel steel bracket, and each support leg 401 of the channel steel bracket 4 is provided with a corresponding patch-type load cell 1. In this embodiment, the patch-type load cell 2 measures the weight through a resistive strain gauge, which is mounted on the outer surface of the support leg 401. Obviously, the reactor tower support structure 4 is not limited to a channel steel bracket. Those skilled in the art can also use other known or future structural forms of support structures according to different actual needs, as long as the support structure can produce a small deformation that can be detected by the patch-type load cell 1 when the ash accumulation in the reactor tower reaches a certain amount.

[0029] Combined Figure 1 As shown, a display instrument 6 is connected to the patch-type load cell 1 to display the weighing data, allowing the user to more intuitively understand the weight of the accumulated dust. Preferably, after connecting the display instrument 6 to the patch-type load cell 1, the display instrument 6 sends the weight signal to the PLC controller 3 using analog output, effectively ensuring the accuracy of the weight signal.

[0030] In this embodiment, the vibrator 2 is preferably a pneumatic hammer, and a power air source 7 is connected to the pneumatic hammer. At least two pneumatic hammers are provided corresponding to the ash hopper section 501 of the reaction tower body 5, and vibrate the reaction tower body from different directions to achieve the best vibration and ash removal effect.

[0031] Preferably, a rapping controller is also connected to the rapper 2 to control the excitation force and vibration frequency of the rapper. The rapping controller can be the same component as the PLC controller 3, or they can be two different components. By controlling the rapper to control the excitation force and vibration frequency, multiple rapping operation modes can be realized. By comparing the operation mode with the tower mass change, the vibration mode can be confirmed and the ash falling amount can be effectively controlled, thereby realizing the control of the ash conveying amount of the reaction tower.

[0032] In this embodiment, the excitation force F is calculated as follows: F ≥ W * ν * K, where W is the total weight of the material (kg); ν is the coefficient of friction of the material (0.8-1.2 for viscous materials); and K is the safety factor, with a higher value of 1.2-2.0 for highly viscous materials. There are two vibration frequencies: high frequency (50-100Hz) and low frequency (10-30Hz), suitable for fine particles and materials with poor flowability; and low frequency (10-30Hz), suitable for large materials or loosely structured applications.

[0033] This embodiment provides a semi-dry desulfurization reaction tower ash accumulation control device. It uses a patch-type weighing sensor 1 to reflect the weight data of the tower body, providing a relatively accurate representation of ash accumulation weight. Furthermore, the patch-type weighing sensor 1 can be installed later, facilitating retrofitting of existing projects. In addition, this ash accumulation control device can be used for daily operation monitoring of the tower body quality, verification of the rapping ash removal effect, and as a reference for pre-shutdown maintenance planning.

[0034] It should be noted that the specific product model selection of the patch weighing sensor 1, PLC controller 3 and display instrument 6, as well as the design of the connection circuit between them, are all common technical knowledge mastered by those skilled in the art, and will not be elaborated here.

[0035] It should also be noted that in the description of this utility model, directional terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model, which should be defined by the claims and their equivalents. Parts not described in the specific embodiments are all prior art or common knowledge.

Claims

1. A device for controlling ash accumulation in a semi-dry deacidification reaction tower, characterized in that, The system includes a patch-type load cell, a vibrator, and a PLC controller. The patch-type load cell is installed on the support structure of the reaction tower to detect the weight of the ash accumulated inside the reaction tower. The vibrator contacts the reaction tower body to vibrate the reaction tower body and remove the ash accumulated inside the reaction tower. The PLC controller is connected to the patch-type load cell and the vibrator to receive the weight signal fed back by the patch-type load cell and control the operation of the vibrator.

2. The ash accumulation control device for a semi-dry deacidification reaction tower according to claim 1, characterized in that, The reaction tower's support structure is a channel steel bracket, and each support leg of the channel steel bracket is equipped with a corresponding patch-type weighing sensor.

3. The ash accumulation control device for a semi-dry deacidification reaction tower according to claim 2, characterized in that, The patch-type load cell measures weight using a resistive strain gauge, which is mounted on the outer surface of the support leg.

4. The ash accumulation control device for a semi-dry deacidification reaction tower according to claim 1, characterized in that, A display instrument is connected to the patch-type load cell. The display instrument is used to display the weighing data and send the weight signal to the PLC controller in the form of analog output.

5. The ash accumulation control device for a semi-dry deacidification reaction tower according to claim 1, characterized in that, The vibrator is a pneumatic hammer, which is installed at the ash hopper section of the reaction tower body.

6. A semi-dry deacidification reaction tower ash accumulation control device according to claim 1 or 5, characterized in that, The vibrator is at least two, and each vibrator vibrates the reaction tower body from different directions.

7. A semi-dry deacidification reaction tower ash accumulation control device according to claim 1 or 5, characterized in that, A vibration controller is connected to the vibrator to control the vibration force and vibration frequency of the vibrator.

8. The ash accumulation control device for a semi-dry deacidification reaction tower according to claim 7, characterized in that, The vibration controller and the PLC controller may be the same component or different components.

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