Flue gas desulfurization device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a flue gas desulfurization device. Comprising a desulfurizing tower used for desulfurizing flue gas, a bottom plate used as a supporting foundation, a flue gas guiding piece used for prolonging the staying time of the flue gas in the desulfurizing tower, a spraying assembly used for spraying an alkaline solution and a circulating assembly used for recycling the alkaline solution, the bottom plate is arranged on the ground, and the desulfurizing tower is arranged on the bottom plate. After entering the desulfurization tower, flue gas flows along the flue gas guide piece, the residence time of the flue gas is prolonged, the spraying assembly sprays an alkaline solution, sulfur dioxide in the flue gas reacts with the alkaline solution, finally sulfur dioxide is removed, and the circulating assembly can collect the alkaline solution sprayed by the spraying assembly to be recycled. According to the arrangement, the desulfurization rate of flue gas is improved, and sulfur dioxide discharged into the atmosphere is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a flue gas desulfurization device. Background Technology

[0002] Flue gas desulfurization refers to the removal of sulfur oxides from flue gas or other industrial waste gases. The main sulfide is sulfur dioxide, a gas harmful to the environment and human health. When sulfur dioxide is emitted into the atmosphere, it easily reacts with water vapor and oxygen to form sulfuric acid rain, causing corrosion and pollution to soil, water bodies, and vegetation, disrupting the ecological balance. Desulfurization treatment can reduce sulfur dioxide emissions from flue gas, thus reducing environmental pollution.

[0003] Currently, the existing desulfurization method involves cooling flue gas or other industrial waste gas before it enters the desulfurization tower. The flue gas rises in the spray tower, and a spray device is installed at the top of the desulfurization tower to spray alkaline solution. However, the concentration of the alkaline solution decreases after the reaction, and the contact time between the alkaline solution spray and the flue gas needs to be increased to ensure that the flue gas discharge meets the standards. The reaction time between the alkaline solution spray and the flue gas in the existing desulfurization tower is relatively short, which cannot guarantee the removal rate of sulfur dioxide in the flue gas after the concentration of the alkaline solution decreases after a period of reaction. Utility Model Content

[0004] In order to improve the removal rate of sulfur dioxide in flue gas, this utility model provides a flue gas desulfurization device.

[0005] This utility model provides a flue gas desulfurization device, which adopts the following technical solution:

[0006] A flue gas desulfurization device includes a desulfurization tower, a base plate, a flue gas guide, and a spray assembly. The desulfurization tower has a reaction chamber inside, and an inlet pipe communicating with the reaction chamber is provided on the side of the desulfurization tower. The desulfurization tower is located on the upper part of the base plate. The flue gas guide is fixedly connected to the reaction chamber inside the desulfurization tower. The flue gas guide is used to extend the movement path of the flue gas in the desulfurization tower to extend the residence time of the flue gas in the desulfurization tower. The spray assembly is provided on the flue gas guide inside the desulfurization tower. The spray assembly includes at least one spray pipe, and a plurality of nozzles are provided on one spray pipe. The nozzles are communicated with the spray pipe.

[0007] By adopting the above technical solution, flue gas or other industrial waste gas is cooled externally and then enters the reaction chamber of the desulfurization tower through the flue gas inlet pipe. The flue gas flows along the channel formed by the flue gas guide and the desulfurization tower. The spray assembly sprays alkaline solution, which reacts with sulfur dioxide in the flue gas to remove sulfur dioxide. The path length of the flue gas flowing along the flue gas guide is longer than the path length of the flue gas directly released into the distillation tower and discharged at the top. This ensures that even after the concentration of alkaline solution in the spray assembly decreases after a period of reaction, it can still react completely with sulfur dioxide in the flue gas, thereby improving the desulfurization rate of the flue gas and reducing the emission of sulfur dioxide into the atmosphere.

[0008] Furthermore, the flue gas guide is configured as a spiral blade, and a fixing rod is provided in the middle of the flue gas guide. The outer side of the flue gas guide rod is fixedly connected to the inner side of the desulfurization tower.

[0009] Furthermore, the spray pipe is configured as a spiral and connected to the flue gas guide, and both ends of the spray pipe are closed.

[0010] Furthermore, the bottom of the desulfurization tower is located at the lower part of the base plate, and the bottom of the desulfurization tower is cone-shaped.

[0011] Furthermore, the base plate has a top end face and a bottom end face, and a circulation assembly is provided on the base plate. The circulation assembly includes a storage tank, a first water pump, and a second water pump. The storage tank is fixedly connected to the top end face of the base plate, the first water pump is fixedly connected to the bottom end face of the base plate, and the second water pump is fixedly connected to the outer side of the desulfurization tower. Both the first and second water pumps have inlets and outlets. The outlet of the first water pump is connected to the storage tank. The inlet pipe of the first water pump is connected to a first connecting pipe. The end of the first connecting pipe away from the first water pump enters the desulfurization tower and extends to the bottom of the desulfurization tower. The inlet of the second water pump is connected to the storage tank through a second connecting pipe. The outlet of the second water pump is connected to a third connecting pipe. The end of the third connecting pipe away from the second water pump enters the desulfurization tower and is connected to the spray pipe.

[0012] Furthermore, a filter screen is installed at the end of the first connecting pipe away from the liquid storage tank.

[0013] Furthermore, a liquid filling port is provided on the end face of the liquid storage tank away from the bottom plate.

[0014] Furthermore, the bottom of the desulfurization tower is provided with an opening, and a sealing element is provided at the opening. The sealing element is detachably connected to the desulfurization tower, and a sealing ring is provided at the contact surface between the desulfurization tower and the sealing element.

[0015] Furthermore, a support leg is provided on the bottom end face of the base plate.

[0016] In summary, this utility model has at least one of the following beneficial technical effects:

[0017] 1. By setting up the flue gas guide, a spiral airflow channel can be formed between the flue gas guide and the inner wall of the desulfurization tower, which can prolong the flow path of the flue gas, increase the residence time of the flue gas in the desulfurization tower, thereby increasing the reaction time of sulfur dioxide in the flue gas with the alkaline solution and improving the removal rate of sulfides in the flue gas.

[0018] 2. Through the circulation component, alkaline solution is added to the inlet of the storage tank. Then, the second water pump is started. The second water pump draws the alkaline solution from the storage tank through the second connecting pipe and into the third connecting pipe, finally entering the spray pipe and being sprayed out through the nozzles. The sprayed alkaline solution absorbs sulfides in the flue gas and eventually collects at the bottom of the desulfurization tower. The first water pump operates, drawing the alkaline solution from the desulfurization tower into the first connecting pipe, and then back into the storage tank. The filter screen in the first connecting pipe prevents sediment from the desulfurization tower from entering the first water pump and damaging it. After a period of time, alkaline solution can be added to the storage tank again to increase the concentration of the alkaline solution, thereby increasing the removal rate of sulfides in the flue gas and reducing environmental pollution.

[0019] 3. By setting the bottom of the desulfurization tower to a cone shape, the alkaline solution reacts with the sulfides in the flue gas to produce precipitates. The precipitates slide down the desulfurization tower into the bottom cone surface, making it easy to collect the precipitates. Attached Figure Description

[0020] Figure 1 This is a first-person view structural diagram of the entire application;

[0021] Figure 2 This is a structural diagram of the entire application from a second perspective;

[0022] Figure 3 This is a cross-sectional structural diagram of the entire application;

[0023] Figure 4 This is a schematic diagram of the structure of the flue gas guide and the spray assembly in this application;

[0024] Figure 5 This is a schematic diagram of the structure of the loop component of this application;

[0025] Reference numerals: 100, desulfurization tower; 110, reaction chamber; 120, flue gas inlet pipe; 130, sealing element; 200, base plate; 210, support leg; 300, flue gas guide; 310, fixing rod; 400, spray assembly; 410, spray pipe; 420, nozzle; 500, circulation assembly; 510, liquid storage tank; 511, liquid filling port; 520, first water pump; 530, second water pump; 540, first connecting pipe; 550, second connecting pipe; 560, third connecting pipe. Detailed Implementation

[0026] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following combination Figures 1-5 The present invention will be described in further detail below.

[0028] This embodiment discloses a flue gas desulfurization device, referring to... Figures 1-3 The system includes a desulfurization tower 100 for flue gas desulfurization, a base plate 200 as a supporting foundation, a flue gas guide 300 for extending the residence time of flue gas in the desulfurization tower 100, a spray assembly 400 for spraying alkaline solution, and a circulation assembly 500 for recycling the alkaline solution. The base plate 200 is set on the ground, and the desulfurization tower 100 is set on the base plate 200. After the flue gas enters the desulfurization tower 100, it flows along the flue gas guide 300 to increase the residence time of the flue gas. The spray assembly 400 sprays alkaline solution, and the sulfur dioxide in the flue gas reacts with the alkaline solution, ultimately removing the sulfur dioxide. The circulation assembly 500 can collect the alkaline solution sprayed by the spray assembly 400 for recycling. The above configuration improves the desulfurization rate of flue gas and reduces the emission of sulfur dioxide into the atmosphere.

[0029] Reference Figures 3-4In this embodiment, the desulfurization tower 100 is cylindrical, with both the top and bottom of the desulfurization tower 100 being conical and having openings for external communication. The desulfurization tower 100 has a reaction chamber 110 inside, and a flue gas inlet pipe 120 communicating with the reaction chamber 110 is provided on the side of the desulfurization tower 100. The bottom conical structure of the desulfurization tower 100 is located at the lower part of the bottom plate 200, and the rest of the structure is located at the upper part of the bottom plate 200. The spray assembly 400 includes at least one spray pipe 410, and a plurality of nozzles 420 are provided on one spray pipe 410, with the nozzles 420 communicating with the spray pipe 410.

[0030] Thus, the nozzles 420 on the spray pipe 410 can spray an alkaline solution, which is lime water, to react with the sulfur dioxide in the desulfurization tower 100, absorb the sulfur dioxide, and produce precipitates. The precipitates slide down the desulfurization tower 100 into the bottom cone surface for collection.

[0031] Reference Figures 3-4 In this embodiment, the flue gas guide 300 is fixedly connected to the reaction chamber 110 inside the desulfurization tower 100. The flue gas guide 300 is used to extend the movement path of the flue gas inside the desulfurization tower 100 to extend the residence time of the flue gas inside the desulfurization tower 100. The flue gas guide 300 is configured as a spiral blade. A fixing rod 310 is provided in the middle of the flue gas guide 300. The outer side of the flue gas guide rod is fixedly connected to the inner side of the desulfurization tower 100. The spray pipe 410 is configured as a spiral and connected to the flue gas guide 300. The spray nozzles 420 are evenly arranged on the spray pipe 410.

[0032] Thus, the fixing rod 310 improves the stability of the flue gas guide 300, and a spiral airflow channel can be formed between the flue gas guide 300 and the inner wall of the desulfurization tower 100, which can prolong the flow path of the flue gas, increase the residence time of the flue gas in the desulfurization tower 100, thereby increasing the reaction time of sulfur dioxide in the flue gas with the alkaline solution and improving the removal rate of sulfides in the flue gas. The spiral spray pipe 410 also ensures the degree of contact between the alkaline solution and the flue gas.

[0033] Reference Figures 1-3 , Figure 5In this embodiment, the base plate 200 has a top end face and a bottom end face. A support leg 210 is provided on the bottom end face of the base plate 200. A circulation assembly 500 is provided on the base plate 200. The circulation assembly 500 includes a liquid storage tank 510, a first water pump 520, and a second water pump 530. The liquid storage tank 510 is fixedly connected to the top end face of the base plate 200. The first water pump 520 is fixedly connected to the bottom end face of the base plate 200. The second water pump 530 is fixedly connected to the outer side of the desulfurization tower 100. Both the first water pump 520 and the second water pump 530 have an inlet and an outlet. The outlet of the first water pump 520 is connected to the liquid storage tank 510. The inlet pipe of the first water pump 520 is connected to the first connecting pipe 540. The end of the first connecting pipe 540 away from the first water pump 520 enters the desulfurization tower 100 and extends to the bottom of the desulfurization tower 100. The inlet of the second water pump 530 is connected to the storage tank 510 through the second connecting pipe 550. The outlet of the second water pump 530 is connected to the third connecting pipe 560. The end of the third connecting pipe 560 away from the second water pump 530 enters the desulfurization tower 100 and is connected to the spray pipe 410. A filter screen is installed at the end of the first connecting pipe 540 away from the storage tank 510. A liquid filling port 511 is installed on the end face of the storage tank 510 away from the bottom plate 200.

[0034] Thus, an alkaline solution is added to the inlet 511 of the storage tank 510, and then the second water pump 530 is started. The second water pump 530 draws the alkaline solution from the storage tank 510 through the second connecting pipe 550 and into the third connecting pipe 560, finally entering the spray pipe 410 and spraying it out through the nozzles 420 of the spray pipe 410. The sprayed alkaline solution absorbs the sulfides in the flue gas, and the alkaline solution finally collects at the bottom of the desulfurization tower 100. The first water pump 520 then... The system allows the alkaline solution in the desulfurization tower 100 to enter the first connecting pipe 540, and then re-enter the storage tank 510 via the first water pump 520. The filter screen in the first connecting pipe 540 prevents the sediment in the desulfurization tower 100 from entering the first water pump 520 and damaging it. After a period of time, alkaline solution can be added to the storage tank 510 to increase the concentration of the alkaline solution, thereby increasing the removal rate of sulfides in the flue gas and reducing environmental pollution.

[0035] In this embodiment, the bottom of the desulfurization tower 100 is provided with an opening, and a sealing element 130 is provided at the opening. The sealing element 130 is detachably connected to the desulfurization tower 100, and a sealing ring is provided at the contact surface between the desulfurization tower 100 and the sealing element 130.

[0036] In this way, the sealing ring can prevent the flue gas or alkaline solution in the desulfurization tower 100 from leaking out at the bottom of the desulfurization tower 100. The sealing element 130 is disassembled periodically to remove the precipitates in the desulfurization tower 100 and prevent excessive precipitates from affecting the normal operation of the desulfurization tower 100.

[0037] The implementation principle of this embodiment is as follows:

[0038] After the flue gas enters the desulfurization tower 100, it flows along the flue gas guide 300, increasing the residence time of the flue gas. The spray assembly 400 sprays an alkaline solution, and the sulfur dioxide in the flue gas reacts with the alkaline solution, ultimately removing the sulfur dioxide. The circulation assembly 500 can collect the alkaline solution sprayed by the spray assembly 400 for recycling.

[0039] Specifically, an alkaline solution is added to the inlet 511 of the storage tank 510, and then the second water pump 530 is started. The second water pump 530 draws the alkaline solution from the storage tank 510 through the second connecting pipe 550 and into the third connecting pipe 560, finally entering the spray pipe 410 and spraying it out through the nozzles 420 of the spray pipe 410. The sprayed alkaline solution absorbs the sulfides in the flue gas, and the alkaline solution finally collects at the bottom of the desulfurization tower 100. The first water pump 520... The system allows the alkaline solution in the desulfurization tower 100 to enter the first connecting pipe 540, and then re-enter the storage tank 510 via the first water pump 520. The filter screen in the first connecting pipe 540 prevents the sediment in the desulfurization tower 100 from entering the first water pump 520 and damaging it. After a period of time, alkaline solution can be added to the storage tank 510 to increase the concentration of the alkaline solution, thereby increasing the removal rate of sulfides in the flue gas and reducing environmental pollution.

[0040] The nozzle 420 on the spray pipe 410 can spray an alkaline solution, which is lime water. The alkaline solution reacts with the sulfur dioxide in the desulfurization tower 100, absorbs the sulfur dioxide, and produces precipitates. The precipitates slide down the desulfurization tower 100 into the bottom cone surface for collection.

[0041] The fixing rod 310 improves the stability of the flue gas guide 300. A spiral airflow channel can be formed between the flue gas guide 300 and the inner wall of the desulfurization tower 100, which can extend the flow path of the flue gas, increase the residence time of the flue gas in the desulfurization tower 100, thereby increasing the reaction time of sulfur dioxide in the flue gas with the alkaline solution and improving the removal rate of sulfides in the flue gas. The spiral spray pipe 410 also ensures the degree of contact between the alkaline solution and the flue gas.

[0042] The sealing ring prevents the flue gas or alkaline solution in the desulfurization tower 100 from leaking out at the bottom of the desulfurization tower 100. The seal 130 is disassembled periodically to remove the precipitates in the desulfurization tower 100.

[0043] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A flue gas desulfurization device, characterized in that, The system includes a desulfurization tower, a base plate, a flue gas guide, and a spray assembly. The desulfurization tower has a reaction chamber inside, and an inlet pipe communicating with the reaction chamber is provided on the side of the desulfurization tower. The desulfurization tower is located on the upper part of the base plate. The flue gas guide is fixedly connected to the reaction chamber inside the desulfurization tower. The flue gas guide is used to extend the movement path of the flue gas in the desulfurization tower to extend the residence time of the flue gas in the desulfurization tower. The spray assembly is provided on the flue gas guide inside the desulfurization tower. The spray assembly includes at least one spray pipe, and multiple nozzles are provided on one spray pipe. The nozzles are communicated with the spray pipe.

2. The flue gas desulfurization device according to claim 1, characterized in that, The flue gas guide is configured as a spiral blade, and a fixing rod is provided in the middle of the flue gas guide. The outer side of the flue gas guide rod is fixedly connected to the inner side of the desulfurization tower.

3. The flue gas desulfurization device according to claim 2, characterized in that, The spray pipe is spiral-shaped and connected to the flue gas guide, with both ends of the spray pipe being closed.

4. The flue gas desulfurization device according to claim 1, characterized in that, The bottom of the desulfurization tower is located at the lower part of the base plate, and the bottom of the desulfurization tower is cone-shaped.

5. The flue gas desulfurization device according to claim 1, characterized in that, The base plate has a top end face and a bottom end face. A circulation assembly is provided on the base plate. The circulation assembly includes a liquid storage tank, a first water pump, and a second water pump. The liquid storage tank is fixedly connected to the top end face of the base plate. The first water pump is fixedly connected to the bottom end face of the base plate. The second water pump is fixedly connected to the outer side of the desulfurization tower. Both the first and second water pumps have inlets and outlets. The outlet of the first water pump is connected to the liquid storage tank. The inlet pipe of the first water pump is connected to a first connecting pipe. The end of the first connecting pipe away from the first water pump enters the desulfurization tower and extends to the bottom of the desulfurization tower. The inlet of the second water pump is connected to the liquid storage tank through a second connecting pipe. The outlet of the second water pump is connected to a third connecting pipe. The end of the third connecting pipe away from the second water pump enters the desulfurization tower and is connected to the spray pipe.

6. The flue gas desulfurization device according to claim 5, characterized in that, A filter screen is installed at the end of the first connecting pipe away from the liquid storage tank.

7. The flue gas desulfurization device according to claim 5, characterized in that, The liquid storage tank has a liquid filling port on the end face away from the bottom plate.

8. The flue gas desulfurization device according to any one of claims 1-7, characterized in that, The desulfurization tower has an opening at its bottom, and a sealing element is provided at the opening. The sealing element is detachably connected to the desulfurization tower, and a sealing ring is provided at the contact surface between the desulfurization tower and the sealing element.

9. The flue gas desulfurization device according to any one of claims 1-7, characterized in that... The bottom end face of the base plate is provided with support legs.

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