Pollution discharge device, demister and absorption tower

Abstract

The utility model relates to a blow-down device, a demister and an absorption tower. The blow-down device comprises a flushing pipe; the water inlet main pipe extends into the absorption tower from the outside of the absorption tower and is connected with the water inlet; the pollution discharge assembly is connected with the pollution discharge port and extends out of the absorption tower from the inside of the absorption tower; and the control valve is arranged on the pollution discharge assembly to control a switch of the pollution discharge assembly. The flushing pipe is arranged in the demister of the absorption tower to clean the demister, the pollution discharge assembly is connected with the pollution discharge port and extends out of the absorption tower from the interior of the absorption tower, the water inlet main pipe is connected with the water inlet to provide cleaning water for the flushing pipe, and when the flushing pipe needs to be cleaned, the control valve is opened, and the control valve is closed. Impurities in the flushing pipe are discharged from the sewage draining outlet and the sewage draining assembly through flushing water entering from the water inlet, a new cleaning water inlet does not need to be connected, cleaning can be carried out under the non-stop condition, the flushing pipe is prevented from being blocked, therefore, the demister is prevented from being blocked, and the reliability and economical efficiency of the demister are improved.

Description

Technical Field

[0001] This disclosure relates to the field of demister technology, specifically to a sewage discharge device, a demister, and an absorption tower. Background Technology

[0002] Currently, tube bundle demisters are widely used in industrial production in the field of engineering technology. In the field of wet flue gas desulfurization, the demister plays a role in further purifying the flue gas within the absorption tower. After the flue gas passes through the demister, a large number of water droplets and dust particles in the flue gas are intercepted, flushed with water, and returned to the slurry pool for recycling. The purified flue gas is then discharged into the atmosphere through the chimney. Under special operating conditions, the demister in the absorption tower is subjected to high temperatures and corrosive gases (NO2, SO2, HCl, etc.) for a long time, and the increase in slurry deposits may lead to blockage. In engineering applications, flushing pipes are designed to avoid blockage, but flushing pipes can also become blocked under complex operating conditions. Once the flushing water pipe is blocked, the demister will inevitably become blocked as well. Currently, when the demister is blocked, it can only be shut down for manual cleaning, which will result in significant economic losses for the power plant. Utility Model Content

[0003] The purpose of this disclosure is to provide a sewage discharge device, a demister, and an absorption tower that can solve the aforementioned technical problems.

[0004] To achieve the above objectives, this disclosure provides a wastewater discharge device, comprising: a flushing pipe, vertically installed inside a demister of an absorption tower, wherein the flushing pipe is provided with a plurality of nozzles for cleaning the demister, the flushing pipe being provided with a water inlet and a wastewater outlet; a main water inlet pipe, extending from the outside of the absorption tower into the absorption tower and connected to the water inlet; a wastewater discharge assembly, connected to the wastewater outlet and extending from the inside of the absorption tower out of the absorption tower; and a control valve, disposed on the wastewater discharge assembly to control the opening and closing of the wastewater discharge assembly.

[0005] Optionally, the sewage discharge assembly includes a connecting pipe and a sewage discharge pipe, the sewage discharge pipe extending horizontally to discharge sewage to the outside of the absorption tower, the control valve being disposed on the portion of the sewage discharge pipe located outside the absorption tower, and the sewage discharge pipe being connected to the sewage discharge port via the connecting pipe.

[0006] Optionally, the drain pipe is provided with multiple connection ports at intervals to connect multiple demisters.

[0007] Optionally, the connecting pipe is constructed as a flexible hose.

[0008] Optionally, the water inlet and the sewage outlet can be the same opening or two different openings.

[0009] Optionally, the water inlet is located at the top of the flushing pipe, the water inlet header is located above the demister and connected to the water inlet, the drain outlet is located at the bottom of the flushing pipe, the drain assembly is located below the demister and connected to the drain outlet.

[0010] Optionally, the diameter of the drain pipe is larger than the diameter of the inlet main pipe.

[0011] Optionally, the inlet header and the drain pipe are constructed as the same pipe, and the inlet and the drain outlet are the same opening, which is located at the bottom of the flushing pipe and connected to the pipe.

[0012] A second object of this disclosure is to provide a demister, comprising: the aforementioned sewage discharge device.

[0013] A third object of this disclosure is to provide an absorption tower comprising the aforementioned demister.

[0014] With the above technical solution, the flushing pipe is installed inside the demister of the absorption tower to clean the demister. The cleaning water enters the flushing pipe through the inlet and is sprayed out from the nozzle. The sewage discharge component is connected to the sewage discharge port and extends from inside the absorption tower to outside the absorption tower. The water inlet header is connected to the inlet to provide cleaning water for the flushing pipe. When the flushing pipe needs to be cleaned, the control valve is opened, and the flushing water entering through the inlet is used to discharge the impurities in the flushing pipe through the sewage discharge port and the sewage discharge component. There is no need to connect a new cleaning water inlet, and cleaning can be carried out online without stopping the machine, avoiding clogging of the flushing pipe, thereby avoiding demister clogging and improving the reliability and economy of the demister.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the demister structure in the first embodiment of this disclosure;

[0018] Figure 2 This is a schematic diagram of the flushing tube in the first embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of the demister structure in the second embodiment of this disclosure;

[0020] Figure 4This is a schematic diagram of the flushing tube in the second embodiment of this disclosure.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Demister; 2. Flushing pipe; 21. Water inlet; 22. Sewage outlet; 23. Nozzle; 3. Water inlet header; 4. Sewage discharge assembly; 41. Connecting pipe; 42. Sewage discharge pipe; 421. Connecting port; 5. Control valve. Detailed Implementation

[0023] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0024] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the upper, lower, top, and bottom of the corresponding component in the direction of gravity when in use, while "inner" and "outer" refer to the inner and outer contours relative to the component or structure itself. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0025] like Figure 1-4 As shown, this disclosure provides a sewage discharge device, including: a flushing pipe 2, which is vertically installed inside the demister 1 of the absorption tower and is provided with a plurality of nozzles 23 to clean the demister 1; the flushing pipe 2 is provided with a water inlet 21 and a sewage outlet 22; a main water inlet pipe 3, which extends from the outside of the absorption tower into the absorption tower and is connected to the water inlet 21; a sewage discharge assembly 4, which is connected to the sewage outlet 22 and extends from the inside of the absorption tower out of the absorption tower; and a control valve 5, which is provided on the sewage discharge assembly 4 to control the opening and closing of the sewage discharge assembly 4.

[0026] Through the above technical solution, the flushing pipe 2 is installed inside the demister 1 of the absorption tower to clean the demister 1. The cleaning water enters the flushing pipe 2 through the inlet 21 and is sprayed out from the nozzle 23. The sewage discharge component 4 is connected to the sewage discharge port 22 and extends from inside the absorption tower to outside the absorption tower. The water inlet header 3 is connected to the inlet 21 to provide cleaning water for the flushing pipe 2. When the flushing pipe 2 needs to be cleaned, the control valve 5 is opened, and the flushing water entering through the inlet 21 is used to discharge the impurities in the flushing pipe 2 through the sewage discharge port 22 and the sewage discharge component 4. There is no need to connect a new cleaning water inlet, and the cleaning can be carried out online without stopping the machine, avoiding the clogging of the flushing pipe 2, thereby avoiding the clogging of the demister 1 and improving the reliability and economy of the demister 1.

[0027] As an optional implementation, the sewage discharge assembly 4 includes a connecting pipe 41 and a sewage discharge pipe 42. The sewage discharge pipe 42 extends horizontally to discharge sewage to the outside of the absorption tower. A control valve 5 is installed on the portion of the sewage discharge pipe 42 located outside the absorption tower. The sewage discharge pipe 42 is connected to the sewage discharge port 22 through the connecting pipe 41. The sewage discharge pipe 42 is horizontally positioned to facilitate the transport of impurities, while the flushing pipe 2 is vertically positioned, so a connecting pipe 41 is required for connection. The control valve 5 is installed on the sewage discharge pipe 42 and is closed when sewage discharge is not performed and opened when sewage discharge is required. The control valve 5 is located outside the absorption tower for easy control and operation.

[0028] Optionally, the drain pipe 42 is provided with a plurality of connection ports 421 at intervals to connect to a plurality of the demisters 1, so that a plurality of demisters 1 can be connected to one drain pipe 42.

[0029] Optionally, the connecting pipe 41 is constructed as a flexible hose that can be bent to adjust the angle, making it convenient to selectively connect to the connecting port 421 and easy to install.

[0030] As an optional implementation method, such as Figure 1-4 As shown, the inlet 21 and the outlet 22 can be the same opening or two different openings. The inlet header 3 can be arranged in two ways: top inlet and bottom inlet. When the bottom inlet mode is used, the inlet and outlet can share the same opening, and the flushing pipe 2 is cleaned at the same time as the water is inlet. When the top inlet mode is used, the flushing pipe 2 is provided with two different openings, one for water inlet and one for outlet.

[0031] The first embodiment, such as Figure 1-2 As shown, the water inlet 21 is located at the top of the flushing pipe 2, the water inlet header 3 is located above the demister 1 and is connected to the water inlet 21, the drain outlet 22 is located at the bottom of the flushing pipe 2, and the drain assembly 4 is located below the demister 1 and is connected to the drain outlet 22. This is the top water inlet mode. The water inlet header 3 is located above the demister 1 and is connected to the water inlet 21 located at the top of the flushing pipe 2. The drain assembly 4 is located below the demister 1 and is connected to the drain outlet 22 located at the bottom of the flushing pipe 2. The flushing water enters from the top to clean the flushing pipe 2 and then flows out from the bottom.

[0032] The diameter of the drain pipe 42 is larger than that of the inlet main pipe 3, which allows the flushing water and the impurities flushed out to be discharged smoothly outside the absorption tower, and also reduces the pressure of the drain pipe 42.

[0033] The second embodiment, such as Figure 3-4As shown, the inlet header 3 and the drain pipe 42 are constructed as the same pipe, and the inlet 21 and the drain outlet 22 are the same opening. This opening is located at the bottom of the flushing pipe 2 and connected to the pipe. This is the bottom water inlet mode. The inlet 21 and the inlet header 3 are located below the demister 1. At this time, the inlet header 3 and the drain pipe 42 are constructed as the same pipe, and the inlet 21 and the drain outlet 22 are the same opening. The cleaning water enters the flushing pipe 2 from the inlet header 3 through the inlet 21 to clean the demister 1. At the same time as cleaning the demister 1, the cleaning water entering the flushing pipe 2 also cleans the flushing pipe 2. The impurities flushed down fall to the drain outlet 22 below under the action of gravity, and then fall into the drain pipe 42 to settle. When it is necessary to clean the drain pipe 42, the control valve 5 is opened, and the flushing water flushes away the impurities deposited in the drain pipe 42 and discharges them.

[0034] The second objective of this disclosure is to provide a demister comprising: the aforementioned drain device, which can be cleaned without shutting down the machine, thereby preventing the flushing pipe 2 from becoming clogged and thus preventing the demister 1 from becoming clogged, thereby improving the reliability and economy of the demister 1.

[0035] The third objective of this disclosure is to provide an absorption tower, including the aforementioned demister 1, to ensure the smooth operation of the absorption tower and to perform cleaning without shutting down the tower.

[0036] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0038] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A sewage discharge device, characterized in that, include: A flushing pipe is used to be vertically installed inside the demister of the absorption tower, and the flushing pipe is equipped with several nozzles to clean the demister. The flushing pipe is equipped with a water inlet and a sewage outlet. The inlet header extends from the outside of the absorption tower into the absorption tower and is connected to the inlet. A sewage discharge assembly, which is connected to the sewage discharge outlet and extends from inside the absorption tower to outside the absorption tower; A control valve is provided on the sewage discharge assembly to control the switching of the sewage discharge assembly.

2. The sewage discharge device according to claim 1, characterized in that, The sewage discharge assembly includes a connecting pipe and a sewage discharge pipe. The sewage discharge pipe extends horizontally to discharge sewage to the outside of the absorption tower. The control valve is located on the portion of the sewage discharge pipe outside the absorption tower. The sewage discharge pipe is connected to the sewage outlet through the connecting pipe.

3. The sewage discharge device according to claim 2, characterized in that, The drain pipe is provided with multiple connection ports at intervals to connect to multiple demisters.

4. The sewage discharge device according to claim 3, characterized in that, The connecting pipe is constructed as a flexible hose.

5. The sewage discharge device according to claim 2, characterized in that, The water inlet and the sewage outlet can be the same opening or two different openings.

6. The sewage discharge device according to claim 5, characterized in that, The water inlet is located at the top of the flushing pipe, the water inlet header is located above the demister and is connected to the water inlet, the drain outlet is located at the bottom of the flushing pipe, the drain assembly is located below the demister and is connected to the drain outlet.

7. The sewage discharge device according to claim 6, characterized in that, The diameter of the sewage pipe is larger than the diameter of the water inlet main pipe.

8. The sewage discharge device according to claim 5, characterized in that, The inlet water pipe and the outlet sewage pipe are constructed as the same pipe, and the inlet water port and the outlet sewage port are the same opening, which is located at the bottom end of the flushing pipe and connected to the pipe.

9. A demister, characterized in that, include: The sewage discharge device according to any one of claims 1-8.

10. An absorption tower, characterized in that, include: The demister according to claim 9.

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