Boiler denitration device capable of automatically adjusting ammonia spraying amount and ammonia spraying method

Abstract

The invention relates to a boiler denitration device capable of automatically adjusting the ammonia spraying amount and an ammonia spraying method, the boiler denitration device comprises denitration equipment, an adjusting mechanism is arranged in the denitration equipment, and a mounting mechanism is arranged on one side of the surface of a mounting plate. According to the boiler denitration device capable of automatically adjusting the ammonia spraying amount, through the arrangement of the adjusting mechanism, when air enters the denitration equipment, a high-temperature-resistant flow velocity sensor carries out flow velocity measurement on the air entering the denitration equipment at the moment, then measured data is transmitted to a control instrument, and digital display is carried out through a display screen; an operator can intuitively know the air flow speed condition in the denitration equipment, and then the control instrument controls the high-pressure pump to transfer materials in the material storage box to the atomization spraying nozzle through the connecting pipe so as to carry out mixing reaction on the air in the denitration equipment; the control instrument can control the spraying state of the atomization spraying nozzle in real time through the high-temperature-resistant flow speed sensor, and the automatic adjusting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to gas purification, and in particular to a boiler denitration device capable of automatically adjusting the amount of ammonia sprayed, and a method for adjusting the amount of ammonia sprayed. Background Art

[0002] The importance of preventing environmental pollution has been sharply raised as a worldwide issue. With the development of modern industrial production and the improvement of living standards, air pollution has become a problem that people are very concerned about. Sulfur dioxide is one of the important sources of air pollution, and its pollution is very harmful. Therefore, in the mid-1970s, research on flue gas desulfurization technology was listed as a priority for preventing and controlling air pollution by many countries, and some practical treatment devices on an industrial scale were built one after another. At the same time, people also began to research and develop prevention and control technologies for another major problem in air pollution, namely the pollution problem of nitrogen oxides NOx. Boilers contain a large amount of nitrogen oxides in the flue gas during the coal burning process, which requires denitrification treatment. Therefore, a boiler denitrification device that automatically adjusts the amount of ammonia injection is particularly needed.

[0003] However, the existing boiler denitrification device is unable to automatically adjust the amount of ammonia sprayed during use, so that the sprayed ammonia cannot automatically adapt to the specific environment, resulting in poor denitrification effect, and further causing the air to fail to meet the standards during the emission process. Summary of the invention

[0004] The object of the present invention is to provide a boiler denitrification device and an ammonia injection method that can automatically adjust the ammonia injection amount, so as to solve the problem that the existing boiler denitrification device proposed in the above background technology cannot automatically adjust the ammonia injection amount during use, so that the injected ammonia cannot automatically adapt to the specific environment, resulting in poor denitrification effect, and further causing the air to fail to meet the standards during the emission process.

[0005] To achieve the above object, the present invention provides the following technical solutions: A boiler denitration device for automatically adjusting the amount of ammonia injection, comprising a denitration device and an adjustment mechanism, wherein the denitration device is provided with the adjustment mechanism inside, a mounting plate is fixedly connected inside the denitration device, a catalyst placement frame is installed on the surface of the mounting plate, and a mounting mechanism is provided on one side of the surface of the mounting plate; The regulating mechanism includes a fixed frame, a high temperature resistant flow rate sensor, a connecting pipe, an atomizing spray nozzle, a high pressure pump, a storage box, a controller, a display screen and buttons. The inner wall of the denitrification equipment is fixedly connected with the fixed frame, the inner wall of the denitrification equipment is installed with a high temperature resistant flow rate sensor, a connecting pipe runs through the interior of the denitrification equipment, an atomizing spray nozzle is installed on the surface of the connecting pipe, one end of the connecting pipe is connected to the high pressure pump, one end of the high pressure pump is connected to the storage box, the surface of the storage box is installed with a controller, one side of the surface of the controller is installed with a display screen, and one side of the surface of the controller is installed with buttons.

[0006] Preferably, one end of the connecting pipe is embedded in the interior of the fixing frame, and four groups of the high temperature resistant flow velocity sensors are provided.

[0007] Preferably, ten groups of the atomizing spray nozzles are provided, and the atomizing spray nozzles are distributed in two rows at equal intervals.

[0008] Preferably, the controller is electrically connected to the high temperature resistant flow rate sensor, and the controller is electrically connected to the high pressure pump.

[0009] Preferably, the mounting mechanism includes a movable groove, a sliding groove, a limiting groove, a return spring, a limiting block and a wrench. A movable groove is provided on one side of the surface of the mounting plate, a sliding groove is provided on the other side of the surface of the mounting plate, a limiting groove is provided on one side of the surface of the catalyst placement frame, a return spring is arranged inside the movable groove, one end of the return spring is fixedly connected to the limiting block, and one end of the limiting block is fixedly connected to the wrench.

[0010] Preferably, the movable groove is communicated with the slide groove, and the cross-sectional dimensions of the movable groove and the limiting groove are consistent.

[0011] Preferably, one end of the return spring is fixedly connected to the mounting plate inside the movable groove, and one end of the wrench passes through the interior of the slide groove. Beneficial Effects

[0012] The boiler denitrification device with automatic adjustment of ammonia spraying amount monitors the flow rate of air entering the denitrification equipment through the setting of the adjustment mechanism, and the high-temperature resistant flow rate sensor monitors the flow rate of air entering the denitrification equipment, so as to judge the air content inside the denitrification equipment. At this time, the controller controls the high-pressure pump to make the atomizing spray nozzle spray out an appropriate amount of ammonia. Real-time adjustment can achieve precise control to avoid situations that affect the denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the side appearance structure of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the regulating mechanism of the present invention; Figure 3This is a schematic diagram of the structure of the mounting plate and the catalyst placement frame cooperating with each other in the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the installation mechanism of the present invention.

[0014] In the figure: 1. Denitrification equipment; 2. Adjustment mechanism; 201. Fixed frame; 202. High temperature resistant flow rate sensor; 203. Connecting pipe; 204. Atomizing spray nozzle; 205. High pressure pump; 206. Storage box; 207. Controller; 208. Display screen; 209. Button; 3. Mounting plate; 4. Catalyst placement frame; 5. Mounting mechanism; 501. Movable groove; 502. Slide groove; 503. Limiting groove; 504. Reset spring; 505. Limiting block; 506. Wrench. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-4 The present invention provides a technical solution: a boiler denitration device for automatically adjusting the amount of ammonia injection, comprising a denitration device 1 and a regulating mechanism 2, wherein the regulating mechanism 2 is arranged inside the denitration device 1, a mounting plate 3 is fixedly connected inside the denitration device 1, a catalyst placement frame 4 is installed on the surface of the mounting plate 3, and a mounting mechanism 5 is arranged on one side of the surface of the mounting plate 3; The regulating mechanism 2 includes a fixed frame 201, a high temperature resistant flow rate sensor 202, a connecting pipe 203, an atomizing spray nozzle 204, a high pressure pump 205, a storage box 206, a controller 207, a display screen 208 and a button 209. The inner wall of the denitration equipment 1 is fixedly connected with the fixed frame 201, the inner wall of the denitration equipment 1 is installed with the high temperature resistant flow rate sensor 202, the interior of the denitration equipment 1 is penetrated by a connecting pipe 203, the surface of the connecting pipe 203 is installed with an atomizing spray nozzle 204, one end of the connecting pipe 203 is connected with the high pressure pump 205, one end of the high pressure pump 205 is connected with the storage box 206, the surface of the storage box 206 is installed with a controller 207, a display screen 208 is installed on one side of the surface of the controller 207, and a button 209 is installed on one side of the surface of the controller 207. 206, the controller 207, the display screen 208 and the button 209 are set. When in use, when air enters the interior of the denitrification equipment 1, the high-temperature resistant flow rate sensor 202 measures the flow rate of the air entering the denitrification equipment 1, and then transmits the measured data to the controller 207, which is digitally displayed through the display screen 208, so that the operator can intuitively understand the air flow rate inside the denitrification equipment 1. Then the controller 207 controls the high-pressure pump 205 to transfer the material inside the storage box 206 to the atomizing spray nozzle 204 through the connecting pipe 203 to mix and react with the air inside the denitrification equipment 1. The controller 207 can control the spraying state of the atomizing spray nozzle 204 in real time through the high-temperature resistant flow rate sensor 202 to achieve the effect of automatic adjustment. At the same time, the operator can also control the controller 207 through the button 209, so as to manually adjust the state of the atomizing spray nozzle 204.

[0017] Furthermore, one end of the connecting pipe 203 is embedded in the interior of the fixed frame 201, and four groups of high-temperature resistant flow velocity sensors 202 are provided. Through the setting of the high-temperature resistant flow velocity sensors 202, when in use, the high-temperature resistant flow velocity sensors 202 can measure the flow velocity of the air flowing into the denitrification equipment 1.

[0018] Furthermore, ten groups of atomizing spray nozzles 204 are provided, and the atomizing spray nozzles 204 are distributed in two columns at equal intervals. Through the arrangement of the atomizing spray nozzles 204, when in use, the atomizing spray nozzles 204 can spray the material inside the storage box 206 in an atomized state.

[0019] Furthermore, the controller 207 is electrically connected to the high temperature resistant flow rate sensor 202 , and the controller 207 is electrically connected to the high pressure pump 205 . Through the setting of the controller 207 , the controller 207 can control the high pressure pump 205 when in use.

[0020] Furthermore, the mounting mechanism 5 includes a movable groove 501, a slide groove 502, a limiting groove 503, a return spring 504, a limiting block 505 and a wrench 506. A movable groove 501 is provided on one side of the surface of the mounting plate 3, a slide groove 502 is provided on the other side of the surface of the mounting plate 3, a limiting groove 503 is provided on one side of the surface of the catalyst placement frame 4, a return spring 504 is provided inside the movable groove 501, one end of the return spring 504 is fixedly connected to the limiting block 505, and one end of the limiting block 505 is fixedly connected to the wrench 506. Through the arrangement of the movable groove 501, the slide groove 502, the limiting groove 503, the return spring 504, the limiting block 505 and the wrench 506, when in use, when the catalyst placement frame 4 needs to be disassembled and assembled, the wrench 506 can be moved, and at this time, the wrench 506 drives the limiting block 505 to move toward the inside of the movable groove 501, and at the same time The return spring 504 is compressed and deformed, and the wrench 506 slides inside the slide groove 502. When the limit block 505 is fully embedded in the movable groove 501, the limit block 505 loses its limiting effect on the catalyst placement frame 4, so that the catalyst placement frame 4 can be removed. When it needs to be installed, the wrench 506 can be turned to make the limit block 505 fully embedded in the movable groove 501, and the catalyst placement frame 4 is placed in the mounting plate 3 so that the limit groove 503 is aligned with the movable groove 501. At this time, the force applied to the wrench 506 is released, so that the return spring 504 rebounds and deforms to drive the limit block 505 to return to its original position. At this time, one end of the limit block 505 is embedded in the movable groove 501, and the other end is embedded in the limit groove 503, so that the limit block 505 fixes the catalyst placement frame 4 inside the mounting plate 3.

[0021] Furthermore, the movable groove 501 is connected to the slide groove 502 , and the cross-sectional dimensions of the movable groove 501 and the limiting groove 503 are consistent. Through the setting of the movable groove 501 , the movable groove 501 can provide movable space for the return spring 504 and the limiting block 505 .

[0022] Furthermore, one end of the return spring 504 is fixedly connected to the mounting plate 3 inside the movable groove 501, and one end of the wrench 506 passes through the interior of the slide groove 502. Through the setting of the return spring 504, when in use, the rebound deformation of the return spring 504 can drive the limit block 505 to return to its original position.

[0023] When air enters the interior of the denitrification equipment 1, the high temperature resistant flow rate sensor 202 measures the flow rate of the air entering the denitrification equipment 1, and then transmits the measured data to the controller 207, which is digitally displayed on the display screen 208, so that the operator can intuitively understand the air flow rate inside the denitrification equipment 1. Then the controller 207 controls the high pressure pump 205 to transfer the material inside the storage box 206 to the atomizing spray nozzle 204 through the connecting pipe 203 to mix the air inside the denitrification equipment 1. The controller 207 can control the spraying state of the atomizing spray nozzle 204 in real time through the high temperature resistant flow rate sensor 202 to achieve the effect of automatic adjustment. At the same time, the operator can also control the controller 207 through the button 209, so as to manually adjust the state of the atomizing spray nozzle 204. When the catalyst placement frame 4 needs to be disassembled and assembled, the wrench 506 can be moved. At this time, the wrench 506 The limit block 505 is driven to move toward the inside of the movable groove 501, and the return spring 504 is compressed and deformed, and the wrench 506 slides inside the slide groove 502. When the limit block 505 is fully embedded in the inside of the movable groove 501, the limit block 505 loses its limiting effect on the catalyst placement frame 4, so that the catalyst placement frame 4 can be removed. When it needs to be installed, the wrench 506 can be bent to make the limit block 505 fully embedded in the inside of the movable groove 501, and the catalyst placement frame 4 is placed in the mounting plate 3, so that the position of the limit groove 503 is aligned with the position of the movable groove 501. At this time, the force applied to the wrench 506 is released, so that the return spring 504 rebounds and deforms to drive the limit block 505 to return to its original position. At this time, one end of the limit block 505 is embedded in the inside of the movable groove 501, and the other end is embedded in the inside of the limit groove 503, so that the limit block 505 fixes the catalyst placement frame 4 to the inside of the mounting plate 3.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler denitration device capable of automatically adjusting the amount of ammonia sprayed, comprising a denitration device (1) and a regulating mechanism (2), characterized in that: The denitration device (1) is provided with an adjusting mechanism (2) inside, the denitration device (1) is fixedly connected with a mounting plate (3) inside, a catalyst placement frame (4) is mounted on the surface of the mounting plate (3), and a mounting mechanism (5) is provided on one side of the surface of the mounting plate (3); The regulating mechanism (2) comprises a fixing frame (201) connected to the inner wall of the denitration device (1); a high temperature resistant flow rate sensor (202) is installed on the inner wall of the denitration device (1); a connecting pipe (203) runs through the interior of the denitration device (1); an atomizing spray nozzle (204) is installed on the surface of the connecting pipe (203); one end of the connecting pipe (203) is connected to a high pressure pump (205); one end of the high pressure pump (205) is connected to a material storage box (206); a controller (207) is installed on the surface of the material storage box (206); a display screen (208) is installed on one side of the surface of the controller (207); and a button (209) is installed on one side of the surface of the controller (207).

2. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 1 is characterized in that: One end of the connecting pipe (203) is embedded in the interior of the fixing frame (201), and four groups of high temperature resistant flow velocity sensors (202) are provided.

3. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 1 is characterized in that: Ten groups of the atomizing spray nozzles (204) are provided, and the atomizing spray nozzles (204) are distributed in two rows at equal intervals.

4. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 1 is characterized in that: The control instrument (207) is electrically connected to the high temperature resistant flow rate sensor (202), and the control instrument (207) is electrically connected to the high pressure pump (205).

5. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 1 is characterized in that: The mounting mechanism (5) comprises a movable groove (501), a movable groove (501) is formed on one side of the mounting plate (3), a sliding groove (502) is formed on the mounting plate (3), a limiting groove (503) is formed on the surface of the catalyst placement frame (4), a return spring (504) is provided in the movable groove (501), the return spring (504) is fixedly connected to a limit block (505), and the limit block (505) is connected to a wrench (506).

6. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 5 is characterized in that: The movable groove (501) is connected to the sliding groove (502), and the cross-sectional dimensions of the movable groove (501) and the limiting groove (503) are consistent.

7. The boiler denitration device with automatic adjustment of ammonia injection amount according to claim 5 is characterized in that: The return spring (504) is fixedly connected to the mounting plate (3), and one end of the wrench (506) passes through the interior of the slide groove (502).

8. A method for adjusting ammonia injection of the device according to any one of claims 1 to 7, characterized in that: When the air enters the interior of the denitrification equipment, the high-temperature resistant flow velocity sensor measures the flow velocity of the air entering the denitrification equipment, and then transmits the measured data to the controller, which is digitally displayed on the display screen. The controller then controls the high-pressure pump to transfer the material inside the storage box to the atomizing spray nozzle through the connecting pipe to mix with the air inside the denitrification equipment. The controller controls the spraying state of the atomizing spray nozzle in real time through the high-temperature resistant flow velocity sensor to achieve automatic adjustment.

9. The method for adjusting ammonia injection of the device according to claim 8, characterized in that: The operator can also control the controller by pressing buttons to manually adjust the state of the atomizing spray nozzle. When the catalyst placement frame needs to be disassembled, the operator moves the wrench, and the wrench drives the limit block to move into the movable groove. At the same time, the reset spring is compressed and deformed, and the wrench slides inside the slide groove. When the limit block is completely embedded in the movable groove, the limit block loses its limiting effect on the catalyst placement frame, so that the catalyst placement frame can be removed. When installation is required, the wrench can be turned to make the limit block completely embedded in the movable groove, and the catalyst placement frame can be placed in the mounting plate so that the limit groove and the movable groove are aligned. At this time, the force applied to the wrench can be released, so that the reset spring rebounds and deforms to drive the limit block to return to its original position. At this time, one end of the limit block is embedded in the movable groove, and the other end is embedded in the limit groove, so that the limit block fixes the catalyst placement frame inside the mounting plate.

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