Structure special for sampling of SCR (selective catalytic reduction) denitration system module of thermal power plant

Abstract

The utility model discloses a thermal power plant SCR (Selective Catalytic Reduction) denitration system module sampling special structure, which relates to the technical field of SCR denitration, and comprises a base, a reaction structure and a mixing structure, the upper surface of the base is fixedly connected with the reaction structure and the mixing structure; the heating temperature of a heating electric plate is controlled and adjusted through a control module and a temperature adjusting button on the control module, the reaction speed of flue gas and a reducing agent can be increased through heating of the heating electric plate, a stirring motor drives a rotating shaft to rotate, and the rotating shaft rotates to drive a rotating thin plate at the lower end of the rotating shaft to rotate; smoke and a reducing agent in the reaction box are stirred through rotation of a rotating thin plate, so that the smoke and the reducing agent can be in full contact, the reaction speed is increased, and after the reaction is completed, reacted gas is guided into a gas collecting box through a gas guide-out pipe and a sucking pump to be collected; when the reacted gas needs to be detected, the gas can be taken out through the exhaust pipe and the exhaust pump.

Description

Technical Field

[0001] The utility model relates to the technical field of SCR denitration, in particular to a special structure for sampling SCR denitration system modules in thermal power plants. Background Technique

[0002] SCR denitration technology is a technology widely used in thermal power plants to reduce the emission of nitrogen oxides (NOx). SCR is the abbreviation of Selective Catalytic Reduction technology. Its working principle is to inject ammonia or other suitable reducing agents into the high-temperature flue gas, and use catalysts (such as alkali metals like iron, vanadium, chromium, cobalt or molybdenum) in the temperature range of 200 - 450 °C to convert NOx in the flue gas into nitrogen and water. This technology has the advantages of high efficiency, flexibility, reliability, etc., and can effectively reduce the NOx emissions of thermal power plants, thus meeting environmental protection standards. In practice, it is necessary to detect the result of flue gas denitration to check whether the nitrogen oxides in the discharged flue gas meet the standards. However, there is currently a lack of a structure capable of sampling flue gas denitration. Therefore, technical personnel in this field have provided a special structure for sampling SCR denitration system modules in thermal power plants to solve the problems raised in the above background technique. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special structure for sampling SCR denitration system modules in thermal power plants to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A special structure for sampling SCR denitration system modules in thermal power plants includes a base, a reaction structure, and a mixing structure. The reaction structure and the mixing structure are fixedly connected to the upper surface of the base. The reaction structure includes: a reaction tank, a reducing agent feeding pipe, a pipe cap, a flue gas inlet pipe, a flue gas suction pump, a heating electric plate, a control module, a temperature display screen, a temperature adjustment button, a stirring motor, a rotating shaft, and a rotating thin plate. The reaction tank is fixedly connected to the left side of the upper surface of the base. The reducing agent feeding pipe is fixedly connected to the left side of the upper surface of the reaction tank. The upper end of the surface of the reducing agent feeding pipe is threadedly connected with a pipe cap. The flue gas inlet pipe is fixedly connected to the right side of the upper surface of the reaction tank. The flue gas suction pump is fixedly connected to the surface of the flue gas inlet pipe.

[0006] As a further solution of the utility model: The heating electric plate is fixedly connected to the bottom surface inside the reaction tank, and the control module is fixedly connected to the middle of the left side surface of the reaction tank.

[0007] As a further solution of the present utility model: a temperature display screen is fixedly connected to the left side surface of the control module, and two temperature adjustment buttons are fixedly connected to the lower end of the temperature display screen and on the left side surface of the control module.

[0008] As a further solution of the present utility model: a stirring motor is fixedly connected to the middle of the upper surface of the reaction tank, and a rotating shaft is movably connected to the middle of the bottom surface of the stirring motor.

[0009] As a further solution of the present utility model: one end of the rotating shaft away from the stirring motor penetrates the upper surface of the reaction tank and is located inside the reaction tank, and a rotating thin plate is fixedly connected to the bottom of the rotating shaft and inside the reaction tank.

[0010] As a further solution of the present utility model: the mixing structure includes: a gas outlet pipe, an air extraction pump, a gas collection tank, an exhaust pipe, an exhaust pump, a liquid outlet pipe and a manual valve, and a gas collection tank is fixedly connected to the right side of the upper surface of the base.

[0011] As a further solution of the present utility model: a gas outlet pipe is fixedly connected between the gas collection tank and the reaction tank, an air extraction pump is fixedly connected to the surface of the gas outlet pipe, and an exhaust pipe is fixedly connected to the front side surface of the gas collection tank.

[0012] As a further solution of the present utility model: an exhaust pump is fixedly connected to the surface of the exhaust pipe, a liquid outlet pipe is fixedly connected to the lower end of the front side surface of the reaction tank, and a manual valve is fixedly connected to the surface of the liquid outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. Appropriate amount of reducing agent is put into the reaction tank through the reducing agent feeding pipe, and then flue gas is drawn into the reaction tank through the flue gas inlet pipe and the flue gas extraction pump, so that the flue gas and the reducing agent react. The heating temperature of the heating electric plate is controlled and adjusted through the control module and the temperature adjustment buttons on the control module. By heating the heating electric plate, the reaction speed of the flue gas and the reducing agent can be increased;

[0015] 2. The stirring motor drives the rotating shaft to rotate, the rotating shaft drives the rotating thin plate at the lower end of the rotating shaft to rotate, and the flue gas and the reducing agent inside the reaction tank are stirred through the rotation of the rotating thin plate, so that the flue gas and the reducing agent can be fully contacted and the reaction speed is accelerated. After the reaction is completed, the reacted gas is introduced into the gas collection tank through the gas outlet pipe and the air extraction pump for collection. When it is necessary to detect the reacted gas, the gas can be taken out through the exhaust pipe and the exhaust pump. Description of the Drawings

[0016] Figure 1It is a schematic diagram of the overall structure of a special structure for sampling SCR denitration system modules in a thermal power plant.

[0017] Figure 2 It is a schematic diagram of the structure of a stirring motor, a rotating shaft and a rotating thin plate in a special structure for sampling SCR denitration system modules in a thermal power plant.

[0018] Figure 3 It is a schematic diagram of the structure of a heating electric plate in a special structure for sampling SCR denitration system modules in a thermal power plant.

[0019] In the figure: 1 - base, 2 - reaction tank, 3 - reductant feeding pipe, 301 - pipe cover, 4 - flue gas inlet pipe, 401 - flue gas suction pump, 5 - heating electric plate, 6 - control module, 601 - temperature display screen, 602 - temperature adjustment button, 7 - stirring motor, 701 - rotating shaft, 8 - rotating thin plate, 9 - gas outlet pipe, 901 - air extraction pump, 10 - gas collection tank, 11 - exhaust pipe, 1101 - exhaust pump, 12 - liquid outlet pipe, 1201 - manual valve. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1

[0022] Refer to Figures 1-3, this embodiment provides a special structure for sampling the SCR denitration system module of a thermal power plant, including a base 1, a reaction structure, and a mixing structure. The reaction structure and the mixing structure are fixedly connected to the upper surface of the base 1. The reaction structure includes: a reaction tank 2, a reductant feeding pipe 3, a pipe cap 301, a flue gas inlet pipe 4, a flue gas suction pump 401, a heating electric plate 5, a control module 6, a temperature display screen 601, a temperature adjustment button 602, a stirring motor 7, a rotating shaft 701, and a rotating thin plate 8. The left side of the upper surface of the base 1 is fixedly connected to the reaction tank 2. The left side of the upper surface of the reaction tank 2 is fixedly connected to the reductant feeding pipe 3. The upper end of the surface of the reductant feeding pipe 3 is threadedly connected to the pipe cap 301. The right side of the upper surface of the reaction tank 2 is fixedly connected to the flue gas inlet pipe 4. The surface of the flue gas inlet pipe 4 is fixedly connected to the flue gas suction pump 401. The bottom surface inside the reaction tank 2 is fixedly connected to the heating electric plate 5. The middle of the left side surface of the reaction tank 2 is fixedly connected to the control module 6. The left side surface of the control module 6 is fixedly connected to the temperature display screen 601. Two temperature adjustment buttons 602 are fixedly connected to the lower end of the temperature display screen 601 and on the left side surface of the control module 6. The middle of the upper surface of the reaction tank 2 is fixedly connected to the stirring motor 7. The middle of the bottom surface of the stirring motor 7 is movably connected to the rotating shaft 701. One end of the rotating shaft 701 away from the stirring motor 7 penetrates the upper surface of the reaction tank 2 and is located inside the reaction tank 2. The bottom of the rotating shaft 701 and inside the reaction tank 2 is fixedly connected to the rotating thin plate 8. The mixing structure includes: a gas outlet pipe 9, a suction pump 901, a gas collection tank 10, an exhaust pipe 11, an exhaust pump 1101, a liquid outlet pipe 12, and a manual valve 1201. The right side of the upper surface of the base 1 is fixedly connected to the gas collection tank 10. A gas outlet pipe 9 is fixedly connected between the gas collection tank 10 and the reaction tank 2. The surface of the gas outlet pipe 9 is fixedly connected to the suction pump 901. The front side surface of the gas collection tank 10 is fixedly connected to the exhaust pipe 11. The surface of the exhaust pipe 11 is fixedly connected to the exhaust pump 1101.

[0023] Example 2

[0024] Refer to Figures 1-3, this embodiment is based on the previous embodiment. The difference from the previous embodiment is that a liquid outlet pipe 12 is fixedly connected to the lower end of the front surface of the reaction tank 2. A manual valve 1201 is fixedly connected to the surface of the liquid outlet pipe 12. An appropriate amount of reducing agent is put into the interior of the reaction tank 2 through the reducing agent feeding pipe 3. Then, flue gas is drawn into the interior of the reaction tank 2 through the flue gas inlet pipe 4 and the flue gas suction pump 401, so that the flue gas and the reducing agent react. The heating temperature of the heating electric plate 5 is controlled and adjusted through the control module 6 and the temperature adjustment button 602 on the control module 6. By heating the heating electric plate 5, the reaction rate of the flue gas and the reducing agent can be increased. The stirring motor 7 drives the rotating shaft 701 to rotate. The rotation of the rotating shaft 701 drives the rotating thin plate 8 at the lower end of the rotating shaft 701 to rotate. The flue gas and the reducing agent in the reaction tank 2 are stirred by the rotation of the rotating thin plate 8, so that the flue gas and the reducing agent can be fully contacted and the reaction rate is accelerated. After the reaction is completed, the reacted gas is introduced into the interior of the gas collection tank 10 through the gas outlet pipe 9 and the air extraction pump 901 for collection. When it is necessary to detect the reacted gas, the gas can be taken out through the exhaust pipe 11 and the exhaust pump 1101.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A special structure for sampling SCR denitration system modules in thermal power plants, comprising a base (1), a reaction structure and a mixing structure, characterized in that, A reaction structure and a mixing structure are fixedly connected to the upper surface of the base (1). The reaction structure includes: a reaction tank (2), a reducing agent feeding pipe (3), a pipe cap (301), a flue gas inlet pipe (4), a flue gas suction pump (401), a heating electric plate (5), a control module (6), a temperature display screen (601), a temperature adjustment button (602), a stirring motor (7), a rotating shaft (701), and a rotating thin plate (8). The reaction tank (2) is fixedly connected to the left side of the upper surface of the base (1). The reducing agent feeding pipe (3) is fixedly connected to the left side of the upper surface of the reaction tank (2). The upper end of the surface of the reducing agent feeding pipe (3) is threadedly connected with the pipe cap (301). The flue gas inlet pipe (4) is fixedly connected to the right side of the upper surface of the reaction tank (2). The flue gas suction pump (401) is fixedly connected to the surface of the flue gas inlet pipe (4).

2. The special structure for sampling of the SCR denitration system module in a thermal power plant according to claim 1, wherein, The heating electric plate (5) is fixedly connected to the bottom surface inside the reaction tank (2). The control module (6) is fixedly connected to the middle of the left side surface of the reaction tank (2).

3. A special structure for sampling of SCR denitration system modules in a thermal power plant according to claim 1, characterized in that, The temperature display screen (601) is fixedly connected to the left side surface of the control module (6). Two temperature adjustment buttons (602) are fixedly connected to the lower end of the temperature display screen (601) and on the left side surface of the control module (6).

4. A special structure for sampling of SCR denitration system modules in thermal power plants according to claim 1, characterized in that, The stirring motor (7) is fixedly connected to the middle of the upper surface of the reaction tank (2). The rotating shaft (701) is movably connected to the middle of the bottom surface of the stirring motor (7).

5. A special structure for sampling of an SCR denitration system module in a thermal power plant according to claim 1, characterized in that, One end of the rotating shaft (701) away from the stirring motor (7) penetrates the upper surface of the reaction tank (2) and is located inside the reaction tank (2). The rotating thin plate (8) is fixedly connected to the bottom of the rotating shaft (701) and inside the reaction tank (2).

6. The special structure for sampling of the SCR denitration system module in a thermal power plant according to claim 1, characterized in that, The mixing structure includes: a gas outlet pipe (9), a suction pump (901), a gas collection tank (10), an exhaust pipe (11), an exhaust pump (1101), a liquid outlet pipe (12), and a manual valve (1201). The gas collection tank (10) is fixedly connected to the right side of the upper surface of the base (1).

7. A special structure for sampling of SCR denitration system modules in thermal power plants according to claim 6, characterized in that, The gas outlet pipe (9) is fixedly connected between the gas collection tank (10) and the reaction tank (2). The suction pump (901) is fixedly connected to the surface of the gas outlet pipe (9). The exhaust pipe (11) is fixedly connected to the front side surface of the gas collection tank (10).

8. A special structure for sampling of SCR denitration system modules in thermal power plants according to claim 6, characterized in that, The exhaust pump (1101) is fixedly connected to the surface of the exhaust pipe (11). The liquid outlet pipe (12) is fixedly connected to the lower end of the front side surface of the reaction tank (2). The manual valve (1201) is fixedly connected to the surface of the liquid outlet pipe (12).

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