Desulfurized ash conveying and discharging device for gas-fired boiler

Abstract

The utility model relates to the technical field of desulfurization ash conveying and discharging, and provides a gas-fired boiler desulfurization ash conveying and discharging device which comprises an ash silo, an ash conveying pipe and at least one ash hopper, the ash hopper is used for collecting desulfurization ash discharged by a bag-type dust remover, a bin pump is arranged below the ash hopper and discharges the desulfurization ash to the ash conveying pipe, one end of the ash conveying pipe is connected with an air inlet pipe, and the other end of the ash conveying pipe is connected with an air outlet pipe. An air inlet valve is arranged on the air inlet pipe, the other end of the ash conveying pipe is connected with the ash silo, an ash conveying valve is arranged on the ash conveying pipe, the bin pump is located between the ash conveying valve and the air inlet valve, a first discharging pipe and a second discharging pipe are arranged between the ash hopper and the bin pump, a first ash discharging valve is arranged on the first discharging pipe, and a second ash discharging valve is arranged on the second discharging pipe. A first vibrator is arranged outside the ash hopper, a first level gage is arranged on the ash hopper, a second vibrator is arranged outside the ash silo, and an ash discharging pipe is arranged at the lower end of the ash silo. The ash hopper and the ash silo are vibrated, the discharging smoothness of the ash hopper and the ash silo is improved, and the conveying pipe can be prevented from being blocked by adopting a pneumatic conveying mode.

Description

Technical Field

[0001] This application relates to the field of desulfurization ash conveying technology, and more specifically, to a desulfurization ash conveying device for a gas-fired boiler. Background Technology

[0002] To ensure that the flue gas emitted by gas-fired boilers meets national environmental protection requirements, the flue gas must be purified, namely, desulfurization, denitrification, and dust removal. Most boiler flue gas desulfurization and dust removal processes adopt dry desulfurization (SDS dry desulfurization) + low-pressure medium-high temperature pulse bag filter technology. This process utilizes the reducing and combustible properties of SO2, using solid oxidants or adsorbents for desulfurization, and the process involves the reaction of NaHCO3 with SO2 to generate Na2SO4. However, current desulfurization ash (Na2SO4) conveying devices on the market suffer from problems such as caking of conveying containers, blockage of conveying pipelines, caking and blockage of valves, and leakage of desulfurization ash from ash silos, resulting in system malfunctions. Therefore, we propose a desulfurization ash conveying device for gas-fired boilers. Utility Model Content

[0003] The purpose of this application is to provide a desulfurization ash conveying device for a gas-fired boiler, thereby solving the problem of poor operation of the desulfurization ash conveying system.

[0004] This application provides a desulfurization ash conveying device for a gas-fired boiler, which adopts the following technical solution:

[0005] A desulfurization ash conveying device for a gas-fired boiler includes an ash silo, an ash conveying pipe, and at least one ash hopper. The ash hopper is used to collect desulfurization ash discharged from a bag filter. A silo pump is installed below the ash hopper, and the silo pump discharges the desulfurization ash to the ash conveying pipe. One end of the ash conveying pipe is connected to an air inlet pipe, and an air inlet valve is installed on the air inlet pipe. The other end of the ash conveying pipe is connected to the ash silo, and an ash conveying valve is installed on the ash conveying pipe. The silo pump is located between the ash conveying valve and the air inlet valve. A first discharge pipe and a second discharge pipe are installed between the ash hopper and the silo pump. A first ash discharge valve is installed on the first discharge pipe, and a second ash discharge valve is installed on the second discharge pipe. A first vibrator and a first level gauge are installed outside the ash hopper. A second vibrator is installed outside the ash silo. An ash discharge pipe is installed at the lower end of the ash silo, and a third ash discharge valve is installed on the ash discharge pipe.

[0006] Preferably, a pressure relief pipe is provided at the upper end of the ash silo, and a pressure relief valve is provided on the pressure relief pipe.

[0007] Preferably, a cloth bag is provided on the pressure relief pipe.

[0008] Preferably, the ash silo is equipped with a second level gauge.

[0009] Preferably, a backflow blower is provided at the upper end of the ash storage.

[0010] Preferably, a buffer is provided at the upper end of the ash silo, and the buffer is connected to the ash conveying pipe.

[0011] Preferably, a purge pipe is connected to the lower side of the ash silo, the purge pipe is connected to an air cannon, and a control valve is provided on the purge pipe.

[0012] Preferably, the third ash discharge valve is connected to a transparent flexible hose, and the transparent flexible hose is connected to a star-shaped discharge valve.

[0013] Preferably, there are two ash discharge pipes, one of which is connected to a suction device via a star-shaped discharge valve, and the other is connected to an automatic packaging machine via a star-shaped discharge valve.

[0014] Preferably, the end of the second discharge pipe near the ash hopper is higher than the end of the first discharge pipe near the ash hopper, and the second ash discharge valve is a ball valve.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] This application sets up a first vibrator and a second vibrator. The first vibrator acts on the ash hopper to improve the smoothness of material discharge from the ash hopper, and the second vibrator acts on the ash silo to improve the smoothness of material discharge from the ash silo.

[0017] By setting up a second discharge pipe and a first level gauge, the first level gauge detects the material level inside the ash hopper. When the material level inside the ash hopper is too high, it indicates that the material discharge from the first discharge pipe is not smooth, and the second discharge pipe can be used to assist in the discharge. After the desulfurization ash enters the ash conveying pipe, the air inlet valve is opened, and compressed air is introduced through the air inlet pipe. Under the action of pneumatic force, the desulfurization ash is sent into the ash silo. Pneumatic conveying can avoid blockage of the ash conveying pipe, thereby improving the smoothness of the operation of the desulfurization ash conveying system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of some embodiments of the present utility model.

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Ash silo; 2. Ash conveying pipe; 3. Ash hopper; 4. Silo pump; 5. Air inlet pipe; 6. Air inlet valve; 7. Ash conveying valve; 8. First discharge pipe; 9. Second discharge pipe; 10. First ash discharge valve; 11. Second ash discharge valve; 12. First vibrator; 13. First level gauge; 14. Second vibrator; 15. Ash discharge pipe; 16. Third ash discharge valve; 17. Pressure relief pipe; 18. Pressure relief valve; 19. Filter bag; 20. Second level gauge; 21. Backflow fan; 22. Buffer; 23. Blowpipe; 24. Air cannon; 25. Control valve; 26. Transparent flexible hose; 27. Rotary star valve; 28. Suction device; 29. ​​Automatic baler. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and 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 application based on the specific circumstances.

[0028] Example

[0029] like Figure 1 As shown in the embodiment of this application, the desulfurization ash conveying device for a gas-fired boiler includes an ash silo 1, an ash conveying pipe 2, and at least one ash hopper 3. The ash hopper 3 is used to collect the desulfurization ash discharged from the bag filter 19. A silo pump 4 is installed below the ash hopper 3. The silo pump 4 discharges the desulfurization ash to the ash conveying pipe 2. One end of the ash conveying pipe 2 is connected to an air inlet pipe 5, and an air inlet valve 6 is installed on the air inlet pipe 5. The other end of the ash conveying pipe 2 is connected to the ash silo 1, and an ash conveying valve 7 is installed on the ash conveying pipe 2. The silo pump 4 is located at the ash conveying pipe 1. A first discharge pipe 8 and a second discharge pipe 9 are provided between valve 7 and air inlet valve 6, and between ash hopper 3 and silo pump 4. A first ash discharge valve 10 is provided on the first discharge pipe 8, and a second ash discharge valve 11 is provided on the second discharge pipe 9. A first vibrator 12 is provided on the outside of ash hopper 3, and a first level gauge 13 is provided on ash hopper 3. A second vibrator 14 is provided on the outside of ash silo 1. An ash discharge pipe 15 is provided at the lower end of ash silo 1, and a third ash discharge valve 16 is provided on the ash discharge pipe 15.

[0030] In operation, the desulfurization ash discharged from the bag filter is collected using the ash hopper 3. The first ash discharge valve 10 is opened, and the desulfurization ash in the ash hopper 3 enters the silo pump 4 through the first discharge pipe 8. The silo pump 4 then sends the desulfurization ash into the ash conveying pipe 2. The air inlet valve 6 is opened, and compressed air is supplied into the air inlet pipe 5 using an external air source. Under pneumatic force, the desulfurization ash is sent into the ash silo 1. Using pneumatic conveying avoids clogging of the ash conveying pipe 2. The third ash discharge valve 16 is then opened, and the ash inside the ash silo 1... The desulfurization ash is discharged through the ash discharge pipe 15. During this process, the first level gauge 13 detects the material level inside the ash hopper 3. When the material level inside the ash hopper 3 is too high, it indicates that the material discharge from the first discharge pipe 8 is not smooth. The material can be discharged through the second discharge pipe 9. The first vibrator 12 acts on the ash hopper 3 to improve the smoothness of the material discharge from the ash hopper 3. The second vibrator 14 acts on the ash silo 1 to improve the smoothness of the material discharge from the ash silo 1, thereby improving the overall smoothness of the desulfurization ash conveying system.

[0031] In this embodiment, a pressure relief pipe 17 is provided at the upper end of the ash silo 1, and a pressure relief valve 18 is provided on the pressure relief pipe 17. When the internal air pressure of the ash silo 1 is too high, the pressure relief valve 18 opens, and the pressure relief pipe 17 is used to discharge the excess gas inside the ash silo 1 to avoid damage to the structure of the ash silo 1.

[0032] In this embodiment, a filter bag 19 is provided on the pressure relief pipe 17. The filter bag 19 is a thickened canvas bag. When the pressure relief pipe 17 exhausts gas, the filter bag 19 filters the dust in the gas to improve the cleanliness of the exhaust gas.

[0033] In this embodiment, a second level gauge 20 is provided on the ash silo 1. The second level gauge 20 is used to detect the material level height inside the ash silo 1.

[0034] In this embodiment, a back-blowing fan 21 is provided at the upper end of the ash silo 1. The back-blowing fan 21 can generate stable air pressure and improve the safety of the ash silo 1.

[0035] In this embodiment, a buffer 22 is provided at the upper end of the ash silo 1. The buffer 22 is connected to the ash conveying pipe 2. When the production needs to suddenly increase or decrease the material conveying volume, the buffer 22 can adjust the material conveying volume and speed in real time according to the actual production needs.

[0036] In this embodiment, a purge pipe 23 is connected to the lower side of the ash silo 1. An air cannon 24 is connected to the purge pipe 23. A control valve 25 is provided on the purge pipe 23. When in use, the control valve 25 is opened, and the air cannon 24 sprays a high-speed airflow into the interior of the purge pipe 23. The high-speed airflow purges the inner wall of the ash silo 1, thereby preventing desulfurization ash from caking on the wall of the ash silo 1.

[0037] In this embodiment, the third ash discharge valve 16 is connected to a transparent hose 26, and the transparent hose 26 is connected to a star-shaped discharge valve 27. By setting the transparent hose 26, the staff can directly observe the ash discharge inside the transparent hose 26, and at the same time, it is convenient to clear blockages.

[0038] In this embodiment, there are two ash discharge pipes 15. One of them, a star-shaped unloading valve 27, is connected to an attraction device 28. The attraction device 28 uses the principle of negative pressure to more effectively extract the ash from the ash silo 1 and transport it to a designated location, thereby improving the conveying efficiency of the ash. An automatic baler 29 bales the desulfurization ash, and the baled desulfurization ash is transported away by a belt conveyor.

[0039] In this embodiment, the end of the second discharge pipe 9 near the ash hopper 3 is higher than the end of the first discharge pipe 8 near the ash hopper 3, and the second ash discharge valve 11 is a ball valve.

[0040] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A desulfurization ash conveying device for a gas-fired boiler, characterized in that: The device includes an ash silo, an ash conveying pipe, and at least one ash hopper. The ash hopper is used to collect desulfurization ash discharged from a bag filter. A silo pump is installed below the ash hopper, and the silo pump discharges the desulfurization ash to the ash conveying pipe. One end of the ash conveying pipe is connected to an air inlet pipe, and an air inlet valve is installed on the air inlet pipe. The other end of the ash conveying pipe is connected to the ash silo, and an ash conveying valve is installed on the ash conveying pipe. The silo pump is located between the ash conveying valve and the air inlet valve. A first discharge pipe and a second discharge pipe are installed between the ash hopper and the silo pump. A first discharge valve is installed on the first discharge pipe, and a second discharge valve is installed on the second discharge pipe. A first vibrator and a first level gauge are installed outside the ash hopper. A second vibrator is installed outside the ash silo. An ash discharge pipe is installed at the lower end of the ash silo, and a third ash discharge valve is installed on the ash discharge pipe.

2. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: The upper end of the ash silo is equipped with a pressure relief pipe, and the pressure relief pipe is equipped with a pressure relief valve.

3. The desulfurization ash conveying device for a gas-fired boiler according to claim 2, characterized in that: A cloth bag is installed on the pressure relief pipe.

4. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: A second level gauge is installed on the ash silo.

5. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: A backflow blower is installed at the top of the ash silo.

6. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: A buffer is provided at the upper end of the ash silo, and the buffer is connected to the ash conveying pipe.

7. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: The lower side of the ash silo is connected to a purge pipe, which is connected to an air cannon and is equipped with a control valve.

8. The desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: The third ash discharge valve is connected to a transparent flexible hose, and the transparent flexible hose is connected to a star-shaped discharge valve.

9. The desulfurization ash conveying device for a gas-fired boiler according to claim 8, characterized in that: There are two ash discharge pipes, one of which is connected to a suction device via a star-shaped discharge valve, and the other is connected to an automatic packaging machine via a star-shaped discharge valve.

10. A desulfurization ash conveying device for a gas-fired boiler according to claim 1, characterized in that: The end of the second discharge pipe near the ash hopper is higher than the end of the first discharge pipe near the ash hopper, and the second ash discharge valve is a ball valve.

Images