Flue gas desulfurization equipment for electric power engineering

Abstract

The invention discloses electric power engineering flue gas desulfurization equipment, which comprises: a desulfurization tower body, which is provided with a flue gas treatment cavity, and a flue gas inlet pipe and a flue gas discharge pipe which are communicated with the flue gas treatment cavity, and the flue gas treatment cavity is filled with a desulfurization treatment liquid; the spraying device is arranged in the flue gas treatment cavity and is positioned between the flue gas inlet pipe and the flue gas exhaust pipe; the treatment liquid circulating system is used for pumping the desulfurization treatment liquid in the flue gas treatment cavity to the spraying device; and the autorotation stirring turbine is arranged in the flue gas treatment cavity and is arranged between the spraying device and the flue gas inlet pipe. According to the invention, through the arrangement of the autorotation stirring turbine, after flue gas enters the flue gas treatment cavity of the desulfurization tower body, formed airflow can enable the autorotation stirring turbine to rotate, so that the autorotation stirring turbine can stir the flue gas more uniformly, and the flue gas and a water-mist-shaped desulfurization mixing agent sprayed by the spraying device are enabled to react uniformly and fully; the problems that in the prior art, when flue gas is treated, the flue gas is difficult to be fully treated, and the treatment effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection equipment, and more specifically to a flue gas desulfurization equipment for electric power engineering. Background Art

[0002] The desulfurization boiler smoke tower is a tower-type equipment for desulfurization of industrial waste gas. The desulfurization boiler smoke tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal, also known as granite water film desulfurization dust collector or granite water film desulfurization dust collector. The large-scale desulfurization device for flue gas desulfurization of the desulfurization tower is called a desulfurization tower, while the small-scale desulfurization and dust removal device used for flue gas desulfurization of coal-fired industrial boilers and kilns is mostly called a desulfurization dust collector.

[0003] The existing boiler smoke tower used for pollution prevention and control and desulfurization is difficult to fully treat the flue gas when treating the flue gas, and the treatment effect is poor.

[0004] Therefore, how to fully treat the flue gas and improve the desulfurization effect is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a flue gas desulfurization device for a power engineering project, so that the flue gas can be fully treated and the desulfurization effect can be improved.

[0006] To achieve the above object, the present invention provides the following technical solutions: A flue gas desulfurization device for power engineering, comprising: The desulfurization tower body comprises a flue gas treatment chamber and a smoke inlet pipe and a smoke exhaust pipe connected to the flue gas treatment chamber, wherein the smoke exhaust pipe is located above the smoke inlet pipe, and the flue gas treatment chamber contains a desulfurization treatment liquid; A spray device, disposed in the smoke treatment chamber and located between the smoke inlet pipe and the smoke exhaust pipe; A treatment liquid circulation system, used for pumping the desulfurization treatment liquid in the flue gas treatment chamber to the spraying device; The self-rotating stirring turbine is arranged in the smoke treatment chamber and between the spray device and the smoke inlet pipe.

[0007] Optionally, in the above-mentioned flue gas desulfurization equipment for electric power engineering, the self-rotating stirring turbine is arranged in the flue gas treatment chamber through a mounting bracket.

[0008] Optionally, in the above-mentioned power engineering flue gas desulfurization equipment, the treatment liquid circulation system includes: Circulation pump; a first connecting pipe, one end of which is connected to the bottom of the flue gas treatment chamber, and the other end of which is connected to the first pump port of the circulation pump; A second connecting pipe, one end of which is connected to the second pump port of the circulation pump, and the other end of which is connected to the spraying device.

[0009] Optionally, in the above-mentioned flue gas desulfurization equipment for power engineering, the treatment liquid circulation system further comprises a three-way valve, the second pump port of the circulation pump is connected to the first valve port of the three-way valve, the second valve port of the three-way valve is connected to the second connecting pipe, and the third valve port of the three-way valve is connected to a discharge pipe; When the three-way valve is in the first working state, the first valve port is connected to the second valve port and is cut off from the third valve port; When the three-way valve is in the second working state, the first valve port is connected to the third valve port and is blocked from the second valve port.

[0010] Optionally, the above-mentioned flue gas desulfurization equipment for electric power engineering further includes a stirrer for stirring the desulfurization treatment liquid in the flue gas treatment chamber.

[0011] Optionally, the above-mentioned power engineering flue gas desulfurization equipment further includes an oxidation air inlet pipe, which is connected to the flue gas treatment chamber and is used to introduce oxygen into the desulfurization treatment liquid in the flue gas treatment chamber.

[0012] Optionally, in the above-mentioned flue gas desulfurization equipment for power engineering, the oxidation air inlet pipe includes a main air inlet pipeline and a plurality of branch air inlet pipelines connected to the main air inlet pipeline; The main air intake pipeline is used to communicate with the air source, and each of the branch air intake pipelines is connected to the flue gas treatment chamber.

[0013] Optionally, the above-mentioned flue gas desulfurization equipment for electric power engineering further includes a filter plate arranged in the flue gas treatment chamber, the filter plate is used to filter particulate matter in the flue gas, and the filter plate is arranged below the spray device.

[0014] Optionally, the above-mentioned flue gas desulfurization equipment for electric power engineering further includes a demister arranged in the flue gas treatment chamber, wherein the demister is arranged between the spray device and the smoke exhaust pipe and is used to demist the flue gas treated by spraying.

[0015] Optionally, in the above-mentioned flue gas desulfurization equipment for electric power engineering, the top of the desulfurization tower body has an opening, and a top cover is detachably provided at the top opening of the desulfurization tower body, and the smoke exhaust pipe is arranged on the top cover.

[0016] The power engineering flue gas desulfurization equipment provided by the present invention, when in use, the flue gas enters the flue gas treatment chamber of the desulfurization tower body through the smoke inlet pipe and flows upward. The treatment liquid circulation system pumps the desulfurization treatment liquid in the flue gas treatment chamber to the spray device, and the spray device sprays the desulfurization treatment liquid downward. The desulfurization treatment liquid sprayed downward contacts the flue gas flowing upward, and continuously desulfurizes the flue gas. The present invention sets a self-rotating stirring turbine. After the flue gas enters the flue gas treatment chamber of the desulfurization tower body, the airflow formed will cause the self-rotating stirring turbine to rotate. In this way, the self-rotating stirring turbine can stir the flue gas more evenly, so that the flue gas and the water mist desulfurization mixture sprayed by the spray device react evenly and fully, which solves the problem that it is difficult to fully treat the flue gas and the treatment effect is poor when treating the flue gas in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a flue gas desulfurization device for a power engineering project disclosed in an embodiment of the present invention; Figure 2 A cross-sectional view of a flue gas desulfurization device for a power engineering project disclosed in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of the top cover disclosed in an embodiment of the present invention.

[0019] The meanings of the reference numerals in the figures are as follows: 1-desulfurization tower body; 2-desulfurization treatment liquid; 3-installation bracket; 4-self-rotating stirring turbine; 5-stirrer; 6-first connecting pipe; 7-circulation pump; 8-second connecting pipe; 9-spraying device; 10-oxidation air inlet pipe; 11-smoke inlet pipe; 12-filter plate; 13-demister; 14-base; 15-top cover; 16-smoke exhaust pipe. DETAILED DESCRIPTION

[0020] The core of the present invention is to provide a flue gas desulfurization device for power engineering, so that the flue gas can be fully treated and the desulfurization effect can be improved.

[0021] The following embodiments are described with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention contents described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions to the inventions described in the claims. It should be noted that, for ease of description, only the parts related to the inventions are shown in the accompanying drawings. The embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0022] like Figure 1 and Figure 2 As shown, the flue gas desulfurization equipment for electric power engineering disclosed in the embodiment of the present invention includes a desulfurization tower body 1, a spray device 9, a treatment liquid circulation system and a self-rotating stirring turbine 4.

[0023] The desulfurization tower body 1 has a flue gas treatment chamber and a smoke inlet pipe 11 and a smoke exhaust pipe 16 connected to the flue gas treatment chamber. The flue gas to be treated enters the flue gas treatment chamber through the smoke inlet pipe 11, and after the desulfurization treatment is completed in the flue gas treatment chamber, it is discharged through the smoke exhaust pipe 16. The desulfurization tower body 1 can be fixed on a base 14, and the base 14 has a larger floor space to improve the stability of the desulfurization tower body 1.

[0024] The exhaust pipe 16 is located above the smoke inlet pipe 11. The smoke treatment chamber contains a desulfurization treatment liquid 2, which is located at the bottom of the smoke treatment chamber under the action of gravity. The exhaust pipe 16 is usually set at the top of the desulfurization tower body 1, and the smoke inlet pipe 11 is set at the bottom of the desulfurization tower body 1.

[0025] The spray device 9 is arranged in the flue gas treatment chamber and is located between the smoke inlet pipe 11 and the smoke exhaust pipe 16, so as to spray the desulfurization treatment liquid 2 on the flue gas entering the flue gas treatment chamber before the flue gas is discharged from the flue gas treatment chamber for desulfurization treatment. The treatment liquid circulation system is used to pump the desulfurization treatment liquid 2 in the flue gas treatment chamber to the spray device 9, and the treatment liquid circulation system is used to realize the recycling of the desulfurization treatment liquid 2, and continuously transport the desulfurization treatment liquid 2 in the flue gas treatment chamber to the spray device 9.

[0026] The self-rotating stirring turbine 4 is disposed in the flue gas treatment chamber and arranged between the spraying device 9 and the smoke inlet pipe 11. The self-rotating stirring turbine 4 can rotate under the action of the airflow, and the rising flue gas passes through the self-rotating stirring turbine 4, and the self-rotating stirring turbine 4 will rotate to make the flue gas more evenly distributed in the flue gas treatment chamber and fully react with the sprayed desulfurization treatment liquid 2.

[0027] In summary, in the power engineering flue gas desulfurization equipment provided by the present invention, when in use, the flue gas enters the flue gas treatment chamber of the desulfurization tower body 1 through the smoke inlet pipe 11 and flows upward. The treatment liquid circulation system pumps the desulfurization treatment liquid 2 in the flue gas treatment chamber to the spray device 9, and the spray device 9 sprays the desulfurization treatment liquid 2 downward.

[0028] The desulfurization treatment liquid 2 sprayed downward contacts the flue gas flowing upward, and continuously desulfurizes the flue gas. The present invention sets a self-rotating stirring turbine 4. After the flue gas enters the flue gas treatment chamber of the desulfurization tower body 1, the airflow formed will cause the self-rotating stirring turbine 4 to rotate, so that the self-rotating stirring turbine 4 can stir the flue gas more evenly, so that the flue gas and the water mist desulfurization mixture sprayed by the spray device 9 react evenly and fully, solving the problem that it is difficult to fully treat the flue gas and the treatment effect is poor when treating the flue gas in the prior art.

[0029] In this embodiment, the self-rotating stirring turbine 4 can be arranged in the flue gas treatment chamber through the mounting bracket 3. The mounting bracket 3 is fixed to the inner wall of the desulfurization tower body 1 and can be fixed by fasteners so that the self-rotating stirring turbine 4 can be removed for repair or replacement after a failure occurs.

[0030] In a specific embodiment of the present invention, the treatment liquid circulation system may include a circulation pump 7, a first connecting pipe 6 and a second connecting pipe 8. One end of the first connecting pipe 6 is connected to the bottom of the flue gas treatment chamber, and the other end is connected to the first pump port of the circulation pump 7. It should be noted that the connection between the first connecting pipe 6 and the desulfurization tower body 1 should be sealed to prevent leakage of the desulfurization treatment liquid 2 at the connection between the two. Through the first connecting pipe 6, the circulation pump 7 can pump out the desulfurization treatment liquid 2 stored in the flue gas treatment chamber.

[0031] One end of the second connecting pipe 8 is connected to the second pump port of the circulating pump 7, and the other end is connected to the spray device 9. The second connecting pipe 8 can inject the desulfurization treatment liquid 2 pumped out by the circulating pump 7 into the spray device 9, and spray it downward through the spray device 9. In order to prevent the high-temperature flue gas from affecting the service life of the circulating pump 7, the circulating pump 7 should be arranged outside the desulfurization tower body 1, and the first connecting pipe 6 and the second connecting pipe 8 are also arranged outside the desulfurization tower body 1, and then pass through the side wall of the desulfurization tower body 1 to be connected to the flue gas treatment chamber and the spray device 9 respectively. The position where the first connecting pipe 6 and the second connecting pipe 8 contact the desulfurization tower body 1 should be sealed.

[0032] Furthermore, the treatment liquid circulation system may also include a three-way valve, the second pump port of the circulation pump 7 is connected to the first valve port of the three-way valve, the second valve port of the three-way valve is connected to the second connecting pipe 8, and the third valve port of the three-way valve is connected to the discharge pipe.

[0033] When the three-way valve is in the first working state, the first valve port is connected to the second valve port, and the first valve port is cut off from the third valve port. At this time, the circulation pump 7 can pump the desulfurization treatment liquid 2 in the flue gas treatment chamber to the spray device 9 through the first connecting pipe 6 and the second connecting pipe 8. When the three-way valve is in the second working state, the first valve port is connected to the third valve port, and the second valve port is cut off. At this time, the circulation pump 7 can discharge the desulfurization treatment liquid 2 in the flue gas treatment chamber from the desulfurization tower body 1 through the first connecting pipe 6 and the discharge pipe, and the desulfurization treatment liquid 2 can be transported to other equipment through the discharge pipe, and then recycled after being processed by other equipment.

[0034] One of the first pump port and the second pump port of the circulation pump 7 is an inlet, and the other is an outlet; which one is the inlet and which one is the outlet is related to the rotation direction of the blades of the circulation pump 7, so the inlet and the outlet can be changed by changing the rotation direction. Based on this, the desulfurization treatment liquid 2 treated by other equipment can be pumped into the desulfurization tower body 1 through the discharge pipe, the circulation pump 7, and the first connecting pipe 6 by changing the options of the circulation pump 7. In addition, the circulation pump 7 can have a built-in filtering structure to block the particulate matter in the desulfurization treatment liquid 2.

[0035] In order to ensure that the desulfurization agent in the desulfurization treatment liquid 2 is uniform, in this embodiment, the flue gas desulfurization equipment for power engineering may also include a stirrer 5 for stirring the desulfurization treatment liquid 2 in the flue gas treatment chamber. The stirrer 5 may include a stirring motor and a stirring blade, and the stirring blade is arranged in the flue gas treatment chamber and submerged in the desulfurization treatment liquid 2 at the bottom of the flue gas treatment chamber. The stirring motor is arranged outside the desulfurization tower body 1, and the output shaft of the stirring motor extends into the desulfurization tower body 1 and is connected to the stirring shaft of the stirring blade to drive the stirring blade to rotate, so as to achieve the effect of stirring the desulfurization treatment liquid 2, and prevent the desulfurization agent in the desulfurization treatment liquid 2 from precipitating and affecting the desulfurization effect of the desulfurization treatment liquid 2.

[0036] In a specific embodiment of the present invention, the flue gas desulfurization equipment for power engineering may also include an oxidation air inlet pipe 10, which is connected to the flue gas treatment chamber and is used to introduce oxygen into the desulfurization treatment liquid 2 in the flue gas treatment chamber. It should be noted that the oxygen introduced into the flue gas treatment chamber by the oxidation air inlet pipe 10 does not only refer to pure oxygen, but can be any gas with an oxygen concentration greater than that of the atmosphere. The air containing a high concentration of oxygen entering the flue gas treatment chamber through the oxidation air inlet pipe 10 will oxidize the sulfur in the desulfurization treatment liquid 2 and perform harmless treatment. The treatment is efficient and the treatment cost is low, which solves the problem that the desulfurization treatment liquid 2 in the prior art is difficult to recycle and has a high treatment cost.

[0037] Furthermore, the oxidation air inlet pipe 10 may include a main air inlet pipe and a plurality of branch air inlet pipes connected to the main air inlet pipe; the main air inlet pipe is used to be connected to the air source, and each branch air inlet pipe is connected to the flue gas treatment chamber. In this embodiment, by connecting the plurality of branch air inlet pipes to the flue gas treatment chamber, air containing high concentration of oxygen can be introduced into the desulfurization treatment liquid 2 from multiple points, thereby improving the mixing effect of air and the desulfurization treatment liquid 2.

[0038] Furthermore, in this embodiment, the flue gas desulfurization equipment for power engineering may also include a filter plate 12 disposed in the flue gas treatment chamber, the filter plate 12 is used to filter the particulate matter in the flue gas, and the filter plate 12 is disposed below the spray device 9. In this embodiment, by providing the filter plate 12 to filter the particulate matter in the flue gas, the flue gas carrying the particulate matter can be prevented from being discharged into the atmosphere and polluting the air. In addition, the filter plate 12 is disposed below the spray device 9, and the water mist desulfurization treatment liquid 2 sprayed by the spray device 9 can also flush the filter plate 12, flushing the particulate matter on the filter plate 12, and preventing the filter plate 12 from being blocked and causing poor flue gas circulation.

[0039] In a specific embodiment of the present invention, the power engineering flue gas desulfurization equipment may further include a demister 13 disposed in the flue gas treatment chamber, the demister 13 being disposed between the spray device 9 and the exhaust pipe 16, and being used to perform demister treatment on the flue gas treated by spraying. The demister 13 removes moisture from the flue gas and then discharges it out of the desulfurization tower body 1 through the exhaust pipe 16, thereby avoiding air pollution.

[0040] like Figure 3 As shown, the top of the desulfurization tower body 1 has an opening, and a top cover 15 is detachably provided at the top opening of the desulfurization tower body 1, and a smoke exhaust pipe 16 is provided on the top cover 15. After opening the top cover 15, the components in the desulfurization tower body 1 can be installed and repaired. The installation method of the top cover 15 and the top opening of the desulfurization tower body 1 can be arbitrary, for example, they can be assembled by fasteners or by threads, as long as the top cover 15 can be fixed. This embodiment does not limit the installation method of the top cover 15 and the top opening of the desulfurization tower body 1, but it is necessary to perform sealing between the two to prevent smoke leakage.

[0041] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0042] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A flue gas desulfurization equipment for power engineering, characterized in that: include: A desulfurization tower body (1) comprises a flue gas treatment chamber and a smoke inlet pipe (11) and a smoke exhaust pipe (16) connected to the flue gas treatment chamber, wherein the smoke exhaust pipe (16) is located above the smoke inlet pipe (11), and a desulfurization treatment liquid (2) is contained in the flue gas treatment chamber; A spray device (9) is arranged in the smoke treatment chamber and is located between the smoke inlet pipe (11) and the smoke exhaust pipe (16); A treatment liquid circulation system, used for pumping the desulfurization treatment liquid (2) in the flue gas treatment chamber to the spray device (9); A self-rotating stirring turbine (4) is disposed in the smoke treatment chamber and arranged between the spray device (9) and the smoke inlet pipe (11).

2. The power engineering flue gas desulfurization equipment according to claim 1, characterized in that: The self-rotating stirring turbine (4) is arranged in the flue gas treatment chamber via a mounting bracket (3).

3. The power engineering flue gas desulfurization equipment according to claim 1, characterized in that: The treatment liquid circulation system comprises: Circulation pump (7); A first connecting pipe (6), one end of the first connecting pipe (6) being connected to the bottom of the flue gas treatment chamber, and the other end of the first connecting pipe (6) being connected to a first pump port of the circulation pump (7); A second connecting pipe (8), one end of the second connecting pipe (8) is connected to the second pump port of the circulation pump (7), and the other end is connected to the spray device (9).

4. The flue gas desulfurization equipment for electric power engineering according to claim 3, characterized in that: The treatment liquid circulation system further comprises a three-way valve, the second pump port of the circulation pump (7) is connected to the first valve port of the three-way valve, the second valve port of the three-way valve is connected to the second connecting pipe (8), and the third valve port of the three-way valve is connected to the discharge pipe; When the three-way valve is in the first working state, the first valve port is connected to the second valve port and is cut off from the third valve port; When the three-way valve is in the second working state, the first valve port is connected to the third valve port and is blocked from the second valve port.

5. The flue gas desulfurization equipment for electric power engineering according to any one of claims 1 to 4, characterized in that: It also includes a stirrer (5) for stirring the desulfurization treatment liquid (2) in the flue gas treatment chamber.

6. The flue gas desulfurization equipment for electric power engineering according to any one of claims 1 to 4, characterized in that: It also comprises an oxidizing air inlet pipe (10), wherein the oxidizing air inlet pipe (10) is connected to the flue gas treatment chamber and is used to introduce oxygen into the desulfurization treatment liquid (2) in the flue gas treatment chamber.

7. The flue gas desulfurization equipment for electric power engineering according to claim 6, characterized in that: The oxidation air inlet pipe (10) comprises a main air inlet pipeline and a plurality of branch air inlet pipelines connected to the main air inlet pipeline; The main air intake pipeline is used to communicate with the air source, and each of the branch air intake pipelines is connected to the flue gas treatment chamber.

8. The flue gas desulfurization equipment for electric power engineering according to any one of claims 1 to 4, characterized in that: It also comprises a filter plate (12) arranged in the smoke treatment chamber, the filter plate (12) being used to filter particulate matter in the smoke, and the filter plate (12) being arranged below the spray device (9).

9. The flue gas desulfurization equipment for electric power engineering according to any one of claims 1 to 4, characterized in that: It also includes a demister (13) disposed in the smoke treatment chamber, wherein the demister (13) is disposed between the spray device (9) and the smoke exhaust pipe (16) and is used to perform demister treatment on the smoke that has been sprayed.

10. The flue gas desulfurization equipment for electric power engineering according to any one of claims 1 to 4, characterized in that: The top of the desulfurization tower body (1) has an opening, and a top cover (15) is detachably provided at the top opening of the desulfurization tower body (1), and the smoke exhaust pipe (16) is provided on the top cover (15).

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