Flue gas cooling device

Abstract

The utility model discloses a flue gas cooling device, include: the flue gas inlet between the flue gas ammonia removal processing tower of going into the flue duct for setting in the flue fan, spray pipe, the spray pipe is set to multiple, multiple the spray pipe is located on the flue duct and is along the transverse interval distribution of flue duct, be provided with the spray head on the spray pipe, form the water mist in the flue channel through the spray head, water inlet pipe, the water inlet pipe with the spray pipe is connected for the water supply to the spray pipe. The utility model realizes the preliminary cooling of high temperature flue gas, ensures the flue gas temperature in the design range in the flue gas treatment tower, guarantees the processing effect of flue gas in the flue gas treatment tower, avoids the influence of high temperature flue gas to the anticorrosive layer of flue gas ammonia removal processing tower inner wall simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and more specifically, to a flue gas cooling device. Background Technology

[0002] The flue gas from cement kilns is generally treated by a flue gas treatment tower. The treatment process mainly involves passing the flue gas into the flue gas treatment tower, spraying absorbent downwards inside the tower, and then allowing the flue gas to flow upwards and come into contact with the absorbent. The absorbent then absorbs and treats some of the substances in the flue gas. However, when the temperature of the flue gas entering the flue gas treatment tower is high, it will affect the durability of the anti-corrosion coating on the inner wall of the flue gas treatment tower. Utility Model Content

[0003] The main objective of this invention is to provide a flue gas cooling device to solve the problem in related technologies where high-temperature flue gas affects the durability of the anti-corrosion layer on the inner wall of the flue gas treatment tower.

[0004] To achieve the above objectives, this utility model provides a flue gas cooling device, comprising:

[0005] The flue gas inlet duct is used to be installed between the flue gas inlet of the flue gas blower and the flue gas deammoniation treatment tower;

[0006] A spray pipe, wherein multiple spray pipes are provided on the smoke inlet pipe and distributed at intervals along the transverse direction of the smoke inlet pipe, and each spray pipe is provided with a nozzle, through which water mist is formed in the smoke inlet pipe;

[0007] A water inlet pipe is connected to the spray pipe and is used to supply water to the spray pipe.

[0008] Furthermore, the nozzle is oriented in the direction of the flue gas flow.

[0009] Furthermore, each of the spray pipes is provided with multiple nozzles, which are distributed at intervals along the axial direction of the spray pipe.

[0010] Furthermore, it also includes a support frame, which is fixed inside the smoke inlet duct, and the lower end of the spray pipe is fixed on the support frame.

[0011] Furthermore, the two ends of the support frame are fixedly connected to the two side walls of the smoke inlet pipe, and the lower end of the spray pipe is close to the bottom edge of the smoke inlet pipe and fixedly connected to the support frame by pipe clamps.

[0012] Furthermore, the upper end of the smoke inlet pipe is provided with multiple first flange connection ports at horizontal intervals, the upper end of the spray pipe is fixedly connected to the first flange connection ports, and the water outlet end of the water inlet pipe is fixedly connected to the first flange connection ports.

[0013] Furthermore, multiple spray pipes are connected in parallel to the same water inlet pipe.

[0014] Furthermore, the flue gas inlet duct is provided with multiple second flange connection ports, which are closer to the flue gas inlet than the first flange connection port;

[0015] At least one of the plurality of second flange connection ports is used to connect a temperature detection device, and the temperature detection device detects the flue gas temperature in the flue gas duct.

[0016] At least one of the plurality of second flange connection ports is used to connect a pressure detection device, which detects the pressure inside the flue gas inlet pipe.

[0017] At least one of the plurality of second flange connection ports is used to connect an ammonia detection device, which detects the ammonia content of the flue gas in the flue gas inlet duct.

[0018] At least one of the plurality of second flange connection ports is used to connect a dust detection device to detect the dust content of the flue gas in the flue gas inlet duct.

[0019] Furthermore, a control valve is installed on the water inlet pipe. The flue gas cooling device also includes a temperature detection device and a control module. The temperature detection device is installed on one of the second flange connection ports. The control module is configured to control the opening and closing of the control valve based on the temperature signal obtained by the temperature detection device.

[0020] Furthermore, the cross-section of the flue gas inlet pipe is rectangular, and the first end of the flue gas inlet pipe is provided with an arc-shaped opening, which is used to connect to the arc-shaped flue gas inlet on the flue gas deammoniation treatment tower. The second end of the flue gas inlet pipe is provided with a circular opening, which is used to connect to the flue gas supply fan through a pipe.

[0021] In this embodiment of the invention, a flue gas treatment tower is provided, which includes a flue gas inlet and a flue gas outlet; a flue gas inlet pipe connected to the flue gas inlet; multiple spray pipes arranged on the flue gas inlet pipe and spaced laterally along the flue gas inlet pipe, each spray pipe equipped with a nozzle to form a water mist inside the flue gas inlet pipe; and a water inlet pipe connected to the spray pipes for supplying water to the spray pipes, thus achieving the effect of water mist being formed by the nozzles inside the flue gas inlet pipe, and the high-temperature flue gas being treated by the water mist after passing through the inlet pipe. The flue gas comes into contact with water mist in the flue gas duct to reduce its temperature. The cooled flue gas then enters the flue gas treatment tower through the flue gas inlet for further treatment. This achieves the purpose of pre-cooling the high-temperature flue gas, ensuring that the temperature of the flue gas entering the flue gas treatment tower is within the design range, thus guaranteeing the treatment effect of the flue gas in the flue gas treatment tower. At the same time, it avoids the impact of high-temperature flue gas on the anti-corrosion layer of the inner wall of the flue gas deammoniation treatment tower. This solves the problem in related technologies where high-temperature flue gas affects the durability of the anti-corrosion layer of the inner wall of the flue gas treatment tower. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model, making other features, objects, and advantages of the utility model more apparent. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the flue gas cooling device after it is installed in the flue gas deammoniation treatment tower according to the embodiment of this utility model;

[0024] Figure 2 yes Figure 1 A top-view structural diagram;

[0025] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of BB;

[0027] Among them, 1. Flue gas deammoniation treatment tower; 10. Flue gas inlet; 2. Flue gas inlet pipe; 3. Spray pipe; 4. Spray head; 5. First flange connection port; 6. Second flange connection port; 7. Support frame. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein.

[0030] In this invention, the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0032] Furthermore, the terms "set up," "equipped with," "connected," and "fixed" should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In addition, the term "multiple" should mean two or more.

[0034] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] To solve related technical problems, such as Figures 1 to 4 As shown, this utility model embodiment provides a flue gas cooling device, including:

[0036] Smoke inlet pipe 2 is used to be installed between the smoke supply fan and the flue gas inlet of the flue gas deammoniation treatment tower 1;

[0037] Spray pipe 3, wherein multiple spray pipes 3 are provided on the smoke inlet pipe 2 and are distributed at intervals along the transverse direction of the smoke inlet pipe 2. Spray pipe 3 is provided with nozzle 4, through which water mist is formed in the smoke inlet pipe 2.

[0038] A water inlet pipe is connected to the spray pipe 3 and is used to supply water to the spray pipe 3.

[0039] In this embodiment, the flue gas ammonia removal treatment tower 1 can be a commonly used treatment tower in related technologies. The main flue gas treatment method is to introduce flue gas from the lower part of the flue gas ammonia removal treatment tower 1 through a flue gas fan. Simultaneously, absorbent is sprayed downwards inside the flue gas ammonia removal treatment tower 1. As the flue gas flows upwards, it comes into contact with the absorbent, and the absorbent absorbs and treats the flue gas. The treated flue gas is discharged from the flue gas outlet at the upper part of the flue gas ammonia removal treatment tower 1. The flue gas inlet pipe 2 is connected to the flue gas inlet 10. Depending on actual needs, the flue gas inlet pipe 2 can be a rectangular pipe with a rectangular cross-section or a circular pipe with a circular cross-section. Correspondingly, the flue gas inlet 10 has different structural forms, which are not limited in this embodiment. Figures 1 to 3 As shown in the figure, in this embodiment, the liquid inlet pipe is a rectangular pipe with a rectangular cross-section.

[0040] For high-temperature flue gas, it is necessary to cool it down before it enters the flue gas deammoniation treatment tower 1. Therefore, in this embodiment, multiple spray pipes 3 are installed in the liquid inlet pipe. The spray pipes 3 are connected to the water inlet pipe (not shown in the figure) and water is supplied to the spray pipes 3 through the water inlet pipe. The multiple spray pipes 3 are distributed at intervals along the transverse direction of the flue gas inlet pipe 2. Each spray pipe 3 is equipped with a nozzle 4. The water mist sprayed from the multiple nozzles 4 can cover the transverse space of the liquid inlet pipe together, so that the flue gas in the flue gas inlet pipe 2 can fully contact the water mist to reduce the temperature of the flue gas.

[0041] This embodiment achieves the goal of forming water mist in the flue gas inlet duct 2 through the nozzle 4. When the high-temperature flue gas passes through the flue gas inlet duct 2, it comes into contact with the water mist and its temperature is reduced. The cooled flue gas then enters the flue gas deammoniation treatment tower 1 through the flue gas inlet 10 for further treatment. This achieves the purpose of pre-cooling the high-temperature flue gas, ensuring that the temperature of the flue gas entering the flue gas treatment tower is within the design range, ensuring the treatment effect of the flue gas in the flue gas treatment tower, and at the same time avoiding the impact of high-temperature flue gas on the anti-corrosion layer of the inner wall of the flue gas deammoniation treatment tower. Thus, it solves the problem in related technologies that high-temperature flue gas affects the durability of the anti-corrosion layer of the inner wall of the flue gas treatment tower 1.

[0042] To improve the efficiency of the exhaust fan, it is necessary to prevent the sprayed water mist from entering the fan through the pipes. Therefore, in this embodiment, the nozzle 4 is oriented in the direction of flue gas flow. In one embodiment, the nozzle 4 may be perpendicular to the spray pipe 3.

[0043] To ensure that the water mist sprayed from the nozzles 4 on the spray pipe 3 can better cover the transverse space of the smoke inlet duct 2, such as Figure 3 As shown, in this embodiment, multiple nozzles 4 are provided on each spray pipe 3, and the multiple nozzles 4 are distributed at intervals along the axial direction of the spray pipe 3. The specific number and interval of the nozzles 4 can be adjusted according to the spray range of a single nozzle 4, as long as it can cover the lateral space of the smoke inlet duct 2.

[0044] To ensure that the water mist from the nozzle 4 covers the lateral space of the smoke inlet duct 2, the lower end of the spray pipe 3 needs to extend close to the bottom of the smoke inlet duct 2, thus allowing the nozzle 4 to be installed at the lower part of the smoke inlet duct 2. Obviously, this results in a relatively long spray pipe 3, and the flue gas entering the smoke inlet duct 2 carries pressure and velocity, making it prone to misalignment upon contact with the longer spray pipe 3. Therefore, as... Figure 3 As shown, this embodiment also includes a support frame 7, which is fixed inside the smoke inlet pipe 2, and the lower end of the spray pipe 3 is fixed on the support frame 7.

[0045] After the support frame 7 is installed, the upper end of the spray pipe 3 is fixed to the upper end of the smoke inlet pipe 2, and the lower end is fixed to the support frame 7. Fixing both ends of the spray pipe 3 makes it less likely for the spray pipe 3 to deviate. In one embodiment, the spray pipe 3 may include a straight pipe, and a plug is installed at the lower end of the straight pipe.

[0046] In one embodiment, the two ends of the support frame 7 are fixedly connected to the two side walls of the smoke inlet duct 2, and the lower end of the spray pipe 3 is close to the bottom edge of the smoke inlet duct 2 and fixedly connected to the support frame 7 by pipe clamps. The pipe clamps can be clamp-like structures capable of fixing circular pipe fittings. The support frame 7 can be a rigid support structure such as channel steel.

[0047] To facilitate the connection between spray pipe 3 and water inlet pipe, such as Figures 1 to 3 As shown in this embodiment, the upper end of the smoke inlet pipe 2 is provided with a plurality of first flange connection ports 5 at horizontal intervals, the upper end of the spray pipe 3 is fixedly connected to the first flange connection ports 5, and the water outlet end of the water inlet pipe is fixedly connected to the first flange connection ports 5.

[0048] In one embodiment, multiple spray pipes 3 are connected in parallel to the same water inlet pipe, thereby facilitating the same control of multiple nozzles 4.

[0049] In one implementation, such as Figure 1 and Figure 4 As shown, the flue gas inlet duct 2 is provided with a plurality of second flange connection ports 6, and the second flange connection ports are closer to the flue gas inlet 10 than the first flange connection ports;

[0050] At least one of the plurality of second flange connection ports 6 is used to connect a temperature detection device to detect the flue gas temperature in the flue gas duct 2.

[0051] At least one of the plurality of second flange connection ports is used to connect a pressure detection device, which detects the pressure inside the smoke inlet pipe 2.

[0052] At least one of the multiple second flange connection ports is used to connect an ammonia detection device, which detects the ammonia content of the flue gas in the flue gas inlet duct 2.

[0053] At least one of the plurality of second flange connection ports is used to connect a dust detection device to detect the dust content of the flue gas in the flue gas inlet duct 2.

[0054] Specifically, in this embodiment, a control valve is provided on the water inlet pipe, and the flue gas cooling device also includes a temperature detection device and a control module. When the temperature detection device is installed on one of the second flange connection ports, the control module is configured to control the opening and closing of the control valve according to the temperature signal obtained by the temperature detection device, thereby flexibly controlling the activation and deactivation of the nozzle 4 according to the flue gas temperature.

[0055] After installing pressure detection equipment, the pressure of flue gas before entering the flue gas deammoniation treatment tower 1 can be detected. At the same time, pressure detection equipment can also be installed at the flue gas outlet to detect the pressure of flue gas when it exits the flue gas deammoniation treatment tower 1. By comparing the two pressures, the resistance to flue gas in the flue gas deammoniation treatment tower 1 can be determined.

[0056] After installing the ammonia detection equipment, the ammonia content of the flue gas entering the flue gas deammoniation treatment tower 1 can be detected in real time, thus providing data for subsequent treatment.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flue gas cooling device, characterized in that, include: The flue gas inlet duct is used to be installed between the flue gas inlet of the flue gas blower and the flue gas deammoniation treatment tower; A spray pipe, wherein multiple spray pipes are provided on the smoke inlet pipe and distributed at intervals along the transverse direction of the smoke inlet pipe, and each spray pipe is provided with a nozzle, through which water mist is formed in the smoke inlet pipe; A water inlet pipe is connected to the spray pipe and is used to supply water to the spray pipe.

2. The flue gas cooling device according to claim 1, characterized in that, The nozzle is oriented in the direction of the flue gas flow.

3. The flue gas cooling device according to claim 1, characterized in that, Each of the spray pipes is provided with multiple nozzles, which are distributed at intervals along the axial direction of the spray pipe.

4. The flue gas cooling device according to claim 1, characterized in that, It also includes a support frame, which is fixed inside the smoke inlet duct, and the lower end of the spray pipe is fixed on the support frame.

5. The flue gas cooling device according to claim 4, characterized in that, The two ends of the support frame are fixedly connected to the two side walls of the smoke inlet pipe, and the lower end of the spray pipe is close to the bottom edge of the smoke inlet pipe and fixedly connected to the support frame by pipe clamps.

6. The flue gas cooling device according to claim 1, characterized in that, The upper end of the smoke inlet pipe is provided with a plurality of first flange connection ports at horizontal intervals. The upper end of the spray pipe is fixedly connected to the first flange connection ports, and the water outlet end of the water inlet pipe is fixedly connected to the first flange connection ports.

7. The flue gas cooling device according to any one of claims 1 to 6, characterized in that, Multiple spray pipes are connected in parallel to the same water inlet pipe.

8. The flue gas cooling device according to claim 6, characterized in that, The flue gas inlet pipe is provided with multiple second flange connection ports, and the second flange connection ports are closer to the flue gas inlet than the first flange connection ports. At least one of the plurality of second flange connection ports is used to connect a temperature detection device, and the temperature detection device detects the flue gas temperature in the flue gas duct. At least one of the plurality of second flange connection ports is used to connect a pressure detection device, which detects the pressure inside the flue gas inlet pipe. At least one of the plurality of second flange connection ports is used to connect an ammonia detection device, which detects the ammonia content of the flue gas in the flue gas inlet duct. At least one of the plurality of second flange connection ports is used to connect a dust detection device to detect the dust content of the flue gas in the flue gas inlet duct.

9. The flue gas cooling device according to claim 8, characterized in that, A control valve is installed on the water inlet pipe. The flue gas cooling device also includes a temperature detection device and a control module. The temperature detection device is installed on one of the second flange connection ports. The control module is configured to control the opening and closing of the control valve based on the temperature signal obtained by the temperature detection device.

10. The flue gas cooling device according to claim 1, characterized in that, The cross-section of the flue gas inlet pipe is rectangular. The first end of the flue gas inlet pipe is provided with an arc-shaped opening, which is used to connect to the arc-shaped flue gas inlet on the flue gas deammoniation treatment tower. The second end of the flue gas inlet pipe is provided with a circular opening, which is used to connect to the flue gas fan through a pipe.

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