A water washing and chlorine reduction device for desulfurization gypsum in power plants

Abstract

This disclosure relates to the technical field of water washing and dechlorination devices. One embodiment of this disclosure provides a water washing and dechlorination device for power plant desulfurization gypsum, which includes a container, a water collection hopper, a treatment chamber, a filtration mechanism, an adsorption mechanism, a clamping plate, a sealing plate, a clamping mechanism, a water storage tank, and a circulating pump. The water collection hopper is connected to the lower side of the container, and the lower side of the water collection hopper is connected to four treatment chambers through four drain pipes. The corresponding drain pipes are connected to the upper side of the corresponding treatment chamber. The filtration mechanism is located at the upper part of the treatment chamber and is used to filter impurities in the wastewater. The adsorption mechanism is located at the lower part of the treatment chamber and is used to adsorb harmful substances in the wastewater. This technical solution addresses the technical problem in the prior art where water washing and dechlorination devices struggle to achieve secondary utilization of wastewater, resulting in direct wastewater discharge and increased water washing costs and wastewater treatment pressure.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of water washing and dechlorination devices, specifically to a water washing and dechlorination device for desulfurized gypsum in power plants. Background Technology

[0002] With increasingly stringent environmental protection requirements, power plants need to desulfurize flue gas during emissions. Desulfurized gypsum, a byproduct of the flue gas desulfurization process, is produced in large quantities. Desulfurized gypsum, also known as flue gas desulfurization gypsum, sulfur gypsum, or FGD gypsum, has the same main component as natural gypsum: calcium sulfate dihydrate CaSO4·2H2O, with a content ≥93%. Excessive chlorine content in desulfurized gypsum can have many adverse effects on its subsequent applications. Therefore, a water washing dechlorination device is needed to reduce the chlorine content inside the desulfurized gypsum. The water washing dechlorination device consists of a container, a stirring mechanism, and a packing layer. The desulfurized gypsum enters the container and reacts with the water inside. After the stirring mechanism is fully stirred, the chlorine molecules inside the desulfurized gypsum are separated from the desulfurized gypsum under the action of water flow and adhere to the packing layer as it passes through it. Existing water washing dechlorination devices generate a large amount of wastewater during use. This wastewater is usually treated by direct discharge. Direct discharge of wastewater not only wastes water resources but also impacts the environment, increases water washing costs, and puts pressure on wastewater treatment. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a water washing and dechlorination device for power plant desulfurization gypsum, which solves the technical problem that existing water washing and dechlorination devices are difficult to reuse wastewater, resulting in direct discharge of wastewater, which increases the cost of water washing and the pressure of sewage treatment.

[0004] According to one aspect, at least one embodiment of this disclosure provides a water washing and dechlorination device for desulfurization gypsum in power plants, comprising a container, wherein an agitator and a packing layer are disposed inside the container, a feed pipe is connected to the upper right side of one of the two sides of the container, and an external pipe is connected to the upper other side of the other side of the container, and further comprising a water collecting hopper, a treatment chamber, a clamping plate, a sealing plate, a water storage tank and a circulation pump, wherein the water collecting hopper is connected to the lower side of the container, and the lower side of the water collecting hopper is connected to four treatment chambers through four drain pipes, the corresponding drain pipes being connected to the upper side of the corresponding treatment chamber, a filtration mechanism is disposed above the interior of the treatment chamber, the filtration mechanism is used to filter impurities in the wastewater, and an adsorption mechanism is disposed... Below the interior of the treatment chamber, the adsorption mechanism is used to adsorb harmful substances in the wastewater. Both the filtration mechanism and the adsorption mechanism are equipped with snap-fit ​​plates, and a sealing plate is fitted onto the snap-fit ​​plate. The sealing plate can move horizontally along the snap-fit ​​plate and is used to seal the treatment chamber. Two sets of snap-fit ​​mechanisms are provided on one side of the sealing plate. The snap-fit ​​mechanism moves synchronously with the sealing plate and is used to snap the snap-fit ​​plate. The water storage tank is connected to the lower side of the treatment chamber through a water supply pipe. The upper side of the water storage tank is connected to a circulation pump through a first return pipe. The output end of the circulation pump is connected to the upper side of the container through a second return pipe.

[0005] The filtration mechanism includes a first mounting frame, a first filter layer, and a second filter layer. The first mounting frame is mounted on the upper side of the inner wall of the processing chamber. The first filter layer is disposed on the upper side of the inner wall of the first mounting frame. The second filter layer is disposed on the lower side of the inner wall of the first mounting frame and is located below the first filter layer.

[0006] As a preferred embodiment of the water washing and chlorination reduction device for power plant desulfurization gypsum described in this utility model, in order to ensure the filtration effect on wastewater, both the first filter layer and the second filter layer are composed of multiple filter screens, and the pore size of the filter screens decreases from top to bottom.

[0007] The adsorption mechanism includes a second mounting frame, a first adsorption layer, and a second adsorption layer. The second mounting frame is installed on the lower side of the inner wall of the processing chamber. The first adsorption layer is disposed on the upper side of the inner wall of the second mounting frame. The second adsorption layer is disposed on the lower side of the inner wall of the second mounting frame and is located below the first adsorption layer.

[0008] As a preferred embodiment of the water washing and chlorination reduction device for power plant desulfurization gypsum described in this utility model, in order to achieve a seal between the treatment chamber and the sealing plate, a sealing ring is provided on one side of the two sides of the sealing plate, and a sealing groove is provided on the treatment chamber, the width of the sealing groove being adapted to the width of the sealing ring.

[0009] The snap-fit ​​mechanism includes a snap-fit ​​seat, adjusting bolts, a sliding plate, and a snap-fit ​​block. The snap-fit ​​seat is mounted on the sealing plate. Two adjusting bolts are inserted through both sides of the snap-fit ​​seat. The sliding plate is disposed on one end of the adjusting bolts that are inserted into the snap-fit ​​seat and moves synchronously with the adjusting bolts. The adjusting bolts and the sliding plate are rotatably connected. The snap-fit ​​block is mounted on the inner side of the sliding plate and moves synchronously with the sliding plate.

[0010] As a preferred embodiment of the water washing and dechlorination device for power plant desulfurization gypsum described in this utility model, in order to achieve sliding limit of the sliding plate and ensure the stability of the sliding plate during sliding, the locking seat is equipped with multiple slide rails inside. The slide rails are I-shaped, and the sliding plate is slidably connected to the slide rails.

[0011] As a preferred embodiment of the water washing and dechlorination device for power plant desulfurization gypsum described in this utility model, in order to achieve the snap-fit ​​between the snap-fit ​​plate and the snap-fit ​​block, thereby realizing the rapid installation of the sealing plate, snap-fit ​​grooves are provided on both sides of the snap-fit ​​plate, and the width of the snap-fit ​​grooves is adapted to the width of the snap-fit ​​block.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In contrast to the existing technology where water washing and dechlorination devices struggle to achieve secondary utilization of wastewater and directly discharge it, increasing washing costs and wastewater treatment pressure, this disclosure addresses the technical problems of wastewater recirculation and recycling. By combining a treatment chamber, storage tank, and circulation pump, the treated wastewater is recycled, saving water resources and reducing washing costs and wastewater treatment pressure. Furthermore, the treatment chamber, filtration mechanism, and adsorption mechanism work together to achieve clean treatment of wastewater, reducing impurities and harmful substances and facilitating secondary utilization of the treated wastewater. In this disclosure, the quick installation or removal of the sealing plate is achieved through the cooperation of the snap-fit ​​plate and the snap-fit ​​mechanism, which enables the staff to install or remove the sealing plate according to the usage requirements. This facilitates the cleaning of the filtration and adsorption mechanisms inside the treatment chamber and ensures the treatment effect of the filtration and adsorption mechanisms on wastewater. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structure of the processing chamber, snap-fit ​​plate, sealing plate, and snap-fit ​​mechanism of this utility model. Figure 3 This is a vertical sectional view of the internal structure of the processing chamber of this utility model; Figure 4 This is a schematic diagram of the structure of the filter mechanism, adsorption mechanism, snap-fit ​​plate and sealing plate of this utility model after they have been exploded. Figure 5 This is a cross-sectional view of the internal structure of the snap-fit ​​mechanism of this utility model.

[0015] In the diagram: 1. Container; 2. Water collection hopper; 3. Treatment chamber; 4. Connecting plate; 5. Sealing plate; 6. Water storage tank; 7. Circulation pump; 101. First mounting frame; 102. First filter layer; 103. Second filter layer; 201. Second mounting frame; 202. First adsorption layer; 203. Second adsorption layer; 301. Snap-fit ​​seat; 302. Adjusting bolt; 303. Sliding plate; 304. Snap-fit ​​block. Detailed Implementation

[0016] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0017] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0018] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0019] In this disclosure, unless otherwise expressly 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," "over," and "on top" of the second feature includes the first feature 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. "Below," "below," and "under" the second feature includes the first feature 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.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0021] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] like Figures 1-5 As shown, this embodiment illustrates a water washing and dechlorination device for power plant desulfurization gypsum according to one embodiment of the present disclosure. The device includes a container 1, a water collection hopper 2, a treatment chamber 3, a filtration mechanism, an adsorption mechanism, a clamping plate 4, a sealing plate 5, a clamping mechanism, a water storage tank 6, and a circulation pump 7. Compared to existing water washing and dechlorination devices, which struggle to achieve secondary utilization of wastewater and directly discharge it, increasing washing costs and wastewater treatment pressure, this embodiment addresses these technical problems. Through the cooperation of the treatment chamber 3, the water storage tank 6, and the circulation pump 7, the treated wastewater is returned to its source, achieving wastewater recycling and saving water. This reduces water washing costs and the pressure of wastewater treatment. Through the cooperation of treatment chamber 3, filtration mechanism and adsorption mechanism, the wastewater is cleaned and treated, reducing impurities and harmful substances in the wastewater. This makes it easier for staff to reuse the treated wastewater. Through the cooperation of snap-fit ​​plate 4 and snap-fit ​​mechanism, the sealing plate 5 can be quickly installed or removed, allowing staff to install or remove the sealing plate 5 according to usage needs. This also makes it easier for staff to clean the filtration mechanism and adsorption mechanism inside treatment chamber 3, ensuring the treatment effect of the filtration mechanism and adsorption mechanism on wastewater. like Figure 1 As shown, the water collection hopper 2 is connected to the lower side of the container 1. The lower side of the water collection hopper 2 is connected to four treatment chambers 3 through four drain pipes. The corresponding drain pipes are connected to the upper side of the corresponding treatment chambers 3. The water collection hopper 2 can collect the wastewater generated during the water washing and dechlorination process. like Figure 2 and Figure 3 As shown, the filtration mechanism is located at the top inside the treatment chamber 3, and the adsorption mechanism is located at the bottom inside the treatment chamber 3. Figure 4 As shown, the filtration mechanism includes a first mounting frame 101, a first filter layer 102, and a second filter layer 103. Both the first filter layer 102 and the second filter layer 103 are composed of multiple filter screens, with the pore size of the filter screens decreasing from top to bottom. The multiple filter screens can achieve multi-stage filtration of wastewater, thereby enhancing the filtration effect of wastewater. The adsorption mechanism includes a second mounting frame 201, a first adsorption layer 202, and a second adsorption layer 203. The cooperation between the filtration mechanism and the adsorption mechanism can achieve the cleaning treatment of wastewater entering the treatment chamber 3, reducing the impurities and harmful substances carried in the wastewater, and facilitating the secondary use of the treated wastewater by the staff. like Figure 4 As shown, both the filtration mechanism and the adsorption mechanism are equipped with snap-fit ​​plates 4. Two snap-fit ​​plates 4 are respectively installed on the first mounting frame 101 and the second mounting frame 201. A sealing plate 5 is fitted onto the snap-fit ​​plate 4. A sealing ring is provided on one side of each side of the sealing plate 5. A sealing groove is provided on the treatment chamber 3, the width of which matches the width of the sealing ring. The sealing ring can seal the treatment chamber 3 and the sealing plate 5 through the sealing groove, thus ensuring the airtightness between the treatment chamber 3 and the sealing plate 5. Two sets of snap-fit ​​mechanisms are provided on one side of each side of the sealing plate 5, such as... Figure 5 As shown, the snap-fit ​​mechanism includes a snap-fit ​​base 301, an adjusting bolt 302, a sliding plate 303, and a snap-fit ​​block 304. Multiple slide rails are installed inside the snap-fit ​​base 301. The slide rails are I-shaped. The sliding plate 303 is slidably connected to the slide rails, which limit the sliding movement of the sliding plate 303, thus ensuring its stability during sliding. Snap-fit ​​grooves are provided on both sides of the snap-fit ​​plate 4. The width of the snap-fit ​​grooves matches the width of the snap-fit ​​block 304. The snap-fit ​​block 304 can snap-fit ​​with the snap-fit ​​plate 4 through the snap-fit ​​grooves, thus enabling the rapid installation of the sealing plate 5. The cooperation between the snap-fit ​​plate 4 and the snap-fit ​​mechanism allows for the rapid installation or removal of the sealing plate 5, facilitating the cleaning of the filtration and adsorption mechanisms by staff. like Figure 1 As shown, the water storage tank 6 is connected to the lower side of the treatment chamber 3 through a water supply pipe. The upper side of the water storage tank 6 is connected to the circulation pump 7 through the first return pipe. The output end of the circulation pump 7 is connected to the upper side of the container 1 through the second return pipe. The cooperation of the water storage tank 6 and the circulation pump 7 can realize the return of the treated wastewater, thereby realizing the recycling of wastewater and saving water resources.

[0023] Working principle: Workers connected the external pipeline to the external water supply equipment, and then added the desulfurized gypsum requiring chlorine reduction to container 1 through the feed pipe. After the feeding was completed, the external water supply equipment delivered water to container 1 through the external pipeline. The desulfurized gypsum and water reacted. During the reaction, the stirring mechanism was activated to agitate the desulfurized gypsum and water. Chlorine molecules on the desulfurized gypsum were separated during this process. The chlorine molecules were adsorbed onto the packing layer as they passed through it. The wastewater entered the collection hopper 2 and then flowed into the treatment chamber 3 through the drain pipe. As the wastewater flowed through the filtration mechanism, the filter... The first filter layer 102 and the second filter layer 103 inside the structure filter impurities in the wastewater. When the filtered wastewater flows through the adsorption mechanism, the first adsorption layer 202 and the second adsorption layer 203 inside the adsorption mechanism adsorb harmful substances in the wastewater, thereby achieving the cleaning treatment of the wastewater. The treated wastewater flows into the storage tank 6 through the water supply pipe. When the wastewater needs to be reused, the circulation pump 7 is started. The circulation pump 7 transports the treated wastewater inside the storage tank 6 to the container 1 through the first return pipe and the second return pipe, thereby realizing the recycling of wastewater. When it is necessary to clean the filtration and adsorption mechanisms inside the treatment chamber 3, the operator turns the adjusting bolt 302 counterclockwise. The adjusting bolt 302 rotates outward, causing the sliding plate 303 to slide outward along the slide rail. The sliding plate 303 causes the locking block 304 to move outward, canceling the locking between the locking plate 4 and the locking block 304. After cancellation, the operator removes the sealing plate 5 from the treatment chamber 3. After cancellation, the operator cleans the filtration and adsorption mechanisms inside the treatment chamber 3.

[0024] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant, comprising a container (1), characterized in that, Also includes: Water collection hopper (2), the water collection hopper (2) is connected to the lower side of the container (1), and the lower side of the water collection hopper (2) is connected to four processing chambers (3) through four drain pipes, and the corresponding drain pipes are connected to the upper side of the corresponding processing chambers (3); A filtration mechanism is disposed above the interior of the treatment chamber (3) and is used to filter impurities in the wastewater. An adsorption mechanism is located below the interior of the treatment chamber (3) and is used to adsorb harmful substances in the wastewater. The snap-fit ​​plate (4) is installed on both the filter mechanism and the adsorption mechanism. A sealing plate (5) is sleeved on the snap-fit ​​plate (4). The sealing plate (5) can move horizontally along the snap-fit ​​plate (4). The sealing plate (5) is used to seal the processing chamber (3). The locking mechanism is provided on one side of the sealing plate (5). The locking mechanism moves synchronously with the sealing plate (5) and is used to lock the locking plate (4). A water storage tank (6) is connected to the lower side of the treatment chamber (3) via a water supply pipe. A circulation pump (7) is connected to the upper side of the water storage tank (6) via a first return pipe. The output end of the circulation pump (7) is connected to the upper side of the container (1) via a second return pipe.

2. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 1, characterized in that, The filtration mechanism includes: The first mounting frame (101) is mounted on the upper side of the inner wall of the processing chamber (3); The first filter layer (102) is disposed on the upper side of the inner wall of the first mounting frame (101); The second filter layer (103) is disposed on the lower side of the inner wall of the first mounting frame (101) and below the first filter layer (102).

3. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 2, characterized in that, Both the first filter layer (102) and the second filter layer (103) are composed of multiple filter screens, and the pore size of the filter screens decreases from top to bottom.

4. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 1, characterized in that, The adsorption mechanism includes: The second mounting frame (201) is installed on the lower side of the inner wall of the processing chamber (3); The first adsorption layer (202) is disposed on the upper side of the inner wall of the second mounting frame (201); The second adsorption layer (203) is disposed on the lower side of the inner wall of the second mounting frame (201) and below the first adsorption layer (202).

5. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 1, characterized in that, A sealing ring is provided on one side of the two sides of the sealing plate (5), and a sealing groove is provided on the processing chamber (3), the width of the sealing groove being adapted to the width of the sealing ring.

6. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 1, characterized in that, The latching mechanism includes: A snap-fit ​​connector (301) is mounted on the sealing plate (5); Adjusting bolts (302): Two adjusting bolts (302) are provided on both sides of the snap-fit ​​seat (301). A sliding plate (303) is arranged on one end of the adjusting bolt (302) penetrating into the clamping seat (301) and moves synchronously with the adjusting bolt (302), and the adjusting bolt (302) and the sliding plate (303) are rotationally connected; A clamping block (304) is installed on the inner side of the sliding plate (303) and moves synchronously with the sliding plate (303).

7. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 6, characterized in that, A plurality of slide rails are installed inside the clamping seat (301), the slide rails are in the shape of an I-beam, and the sliding plate (303) is slidingly connected to the slide rails.

8. A device for washing and reducing the chlorine content of desulfurization gypsum from a power plant according to claim 6, characterized in that, Clamping grooves are formed on both sides of the clamping plate (4), and the width of the clamping grooves is adapted to the width of the clamping block (304).

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