Ammonia gas conveying and spraying device

Abstract

The invention provides an ammonia gas conveying and spraying device, and relates to the technical field of gas conveying and spraying devices.The ammonia gas conveying and spraying device comprises a storage tank, the first end of a conveying pipeline is communicated with the storage tank, the second end of the conveying pipeline is communicated with the first end of a branch pipeline, and the second end of the branch pipeline is communicated with a spraying head; the spray head comprises a first spraying plate, a part of a second spraying plate is rotationally connected to the inner side of the first spraying plate, and the second spraying plate is driven by a driving mechanism to rotate. When the ammonia gas conveying and spraying device is specifically operated, a toothed plate is rotated to drive a second spraying plate to rotate on the surface of a first spraying plate, the toothed plate drives a gear to rotate on the arc surface of a round rod, after rotation is stopped, the toothed plate is engaged with the gear to limit the toothed plate, and at the moment, the second spraying plate and the first spraying plate are staggered; the injection range of the ammonia gas is adjusted through the injection orifices with different sizes, so that the problem of out-of-control reaction caused by excessive flow of the ammonia gas is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gas transportation and injection devices, and particularly to an ammonia transportation and injection device. Background Art

[0002] Ammonia, as an important chemical raw material, is widely used in multiple fields such as fertilizers, refrigeration, and cleaning. To ensure the safety and efficiency of ammonia during production and transportation, the design and use of ammonia transportation and injection devices are particularly important.

[0003] Publication No. CN215311328U, an ammonia recovery and conversion device, includes a recovery tank. A bearing seat is fixedly installed at the top of the recovery tank. A hollow rotating shaft is rotatably connected inside the bearing seat. A first gear is fixedly connected to the outer surface of the hollow rotating shaft. A second gear meshes with the outer surface of the first gear. A motor is fixedly connected to one side of the second gear. One end of the hollow rotating shaft is fixedly connected to a shunt pipe. A number of first high-pressure nozzles are fixedly connected to the outer surface of the shunt pipe. Second high-pressure nozzles are fixedly connected to both ends of the shunt pipe. A shunt box is fixedly connected inside the recovery tank. A number of air outlet holes are provided on one side of the shunt box. An exhaust pipe is fixedly connected to the top of the recovery tank. A first electromagnetic control valve and an ammonia concentration detector are arranged on the outer surface of the exhaust pipe. A return pipe is fixedly connected to the outer surface of the exhaust pipe. A second electromagnetic control valve is arranged on the outer surface of the return pipe. A controller is arranged at the top of the recovery tank. In this ammonia recovery and conversion device, through the cooperative setting of the hollow rotating shaft, the first gear, the second gear, the motor, the shunt pipe, the first high-pressure nozzles, the second high-pressure nozzles, the shunt box and the air outlet holes, the shunt box is located inside the recovery tank, and ammonia flows outwards from a number of air outlet holes, so that ammonia can be evenly distributed inside the recovery tank. Start the motor, the second gear will drive the first gear to rotate, and then the hollow rotating shaft will drive the shunt pipe to rotate. As the shunt pipe rotates, the first high-pressure nozzles and the second high-pressure nozzles will also rotate accordingly. Water is introduced into the interior of the hollow rotating shaft, and the water flow will enter the interior of the shunt pipe and be sprayed out from the first high-pressure nozzles and the second high-pressure nozzles. The nozzle direction of the first high-pressure nozzles is vertically downward, and the nozzle direction of the second high-pressure nozzles is obliquely downward, and the first high-pressure nozzles and the second high-pressure nozzles rotate to spray water, so that the water sprayed by the first high-pressure nozzles and the second high-pressure nozzles can fully contact the gas inside the recovery tank, thus achieving the effect of improving the efficiency of ammonia recovery and ensuring that the ammonia recovery effect of this device is relatively good. In this ammonia recovery and conversion device, through the cooperative setting of the exhaust pipe, the first electromagnetic control valve, the ammonia concentration detector, the return pipe, the control valve and the controller, when the ammonia concentration detector detects that the ammonia concentration reaches the emission standard, the ammonia concentration detector will transmit a signal to the controller, and then the first electromagnetic control valve will be opened to discharge the gas. When the ammonia concentration sensor detects that the ammonia concentration does not reach the emission standard, the controller will control the second electromagnetic control valve to open, so that the gas returns to the inside of the suction pipe from the return pipe, so that the gas can be recycled again, avoiding the discharge of non-standard gas, ensuring the quality of the discharged gas, avoiding the pollution of the air by non-standard gas, and the gas that does not reach the emission standard will re-enter the recovery tank for conversion work, thus further improving the conversion efficiency.

[0004] Traditional fixed injection nozzles may not be able to flexibly adjust the ammonia injection according to different reaction scales and the distribution of the reaction medium, which is likely to cause uneven distribution of ammonia in the reaction space, with excessive ammonia in some areas and insufficient ammonia in some areas. For example, in chemical production, if the distribution of ammonia in the reaction medium is uneven, the chemical reactions in some areas will proceed too fast while those in other areas will proceed too slowly, ultimately affecting the quality and output of the product. Moreover, for some chemical reactions that are sensitive to the ammonia flow rate and concentration, if the ammonia flow rate is too high, it may lead to a runaway reaction, resulting in dangerous or adverse side reactions. Therefore, an ammonia transportation and injection device is proposed to address the above problems. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned drawbacks of the prior art and provide an ammonia transportation and injection device that can avoid the problem of runaway reaction caused by excessive ammonia flow rate.

[0006] To solve the above technical problems, the present invention discloses an ammonia transportation and injection device, which includes a storage tank. The first end of the transportation pipeline is connected to the storage tank, the second end of the transportation pipeline is connected to the first end of a branch pipeline, and the second end of the branch pipeline is connected to a spray head. The spray head includes a first spray plate, and a part of the second spray plate is rotatably connected to the inside of the first spray plate, and the second spray plate is driven to rotate by a driving mechanism.

[0007] Preferably, the driving mechanism includes: A toothed plate, which is arranged on the outer peripheral surface of the second spray plate; A fixing plate, which is fixedly connected to the first spray plate; A round rod and a gear. The round rod is rotatably connected to the fixing plate, a gear is connected to the round rod, and the gear meshes with the toothed plate.

[0008] Preferably, a valve and a gas flow regulating valve are installed on the transportation pipeline, and a pressure gauge is arranged on the top of the storage tank.

[0009] Preferably, an auxiliary rod is fixedly connected to the toothed plate.

[0010] Preferably, the end of the second spray plate away from the first spray plate has an arc surface structure.

[0011] Preferably, an anti-corrosion coating is applied to the inner wall of the branch pipeline.

[0012] Preferably, the current demand ammonia injection range where the current spray head is applied is divided into multiple spray areas, each spray area corresponds to several spray holes of the current spray head, and at least one ammonia concentration detection device is arranged in each spray area; The ammonia transportation and injection device further includes: Flow detection device: used to detect the flow rate inside the second end of the branch pipeline; Control device, the control device is connected to the flow detection device; The control device includes: First acquisition unit: used to acquire the parameters of the current required ammonia injection range applied by the current nozzle, and the parameters of the required ammonia injection range include: the total volume of the required ammonia injection range and the application type of ammonia; First determination unit: used to determine the first required ammonia flow rate range during injection of the current required ammonia injection range applied by the current nozzle based on the first acquisition unit; First control unit: used to control the gas flow regulating valve so that the detection value of the flow detection device is the median of the first required ammonia flow rate range acquired by the first acquisition unit, and spray and test for the first duration within the current required ammonia injection range applied by the current nozzle; Second acquisition unit: used to acquire the detection value of the ammonia concentration detection device within the current required ammonia injection range applied by the current nozzle during the first duration; First calculation unit: used to calculate the injection difference degree of each injection area based on the second acquisition unit; Second determination and warning unit: Used to determine that: the injection area where the injection difference degree is greater than the second difference degree is the first injection area, determine the spray holes of the current nozzle corresponding to the first injection area as abnormal spray holes, and give a warning.

[0013] Preferably, the second determination and warning unit is further used to determine that: the injection area where the injection difference degree is greater than the first difference degree and less than the second difference degree is the second injection area; The control device further includes: Second calculation unit: used to calculate the target injection flow rate during injection of the current required ammonia injection range applied by the current nozzle based on the first calculation unit and the second determination and warning unit when there is no first injection area; after the current first duration is completed, adjust, and the first control unit controls the gas flow regulating valve so that the detection value of the flow detection device is the target injection flow rate during injection of the current required ammonia injection range applied by the current nozzle, and spray through the current nozzle within the current required ammonia injection range applied by the current nozzle until the set duration.

[0014] Compared with the prior art, the beneficial effects of the present invention are: When the ammonia gas transportation and injection device of the present invention is in specific operation, the second injection plate is driven to rotate on the surface of the first injection plate by rotating the toothed plate. The toothed plate drives the gear to rotate on the arc surface of the round rod. After stopping the rotation, the toothed plate engages with the gear to limit the toothed plate. At this time, the second injection plate is misaligned with the first injection plate, forming injection ports of different sizes, and the injection range of ammonia gas is adjusted through the injection ports of different sizes, avoiding the problem of reaction out of control caused by excessive ammonia gas flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 In the present invention Figure 1 is a partial structural schematic diagram; Figure 3 is a structural schematic diagram of the second injection plate in the present invention; Figure 4 is a structural schematic diagram of the first injection plate in the present invention; Figure 5 is a structural schematic diagram of the branch pipeline in the present invention.

[0017] Among them, 1, storage tank; 2, transportation pipeline; 3, branch pipeline; 4, nozzle; 5, first injection plate; 6, second injection plate; 7, toothed plate; 8, fixing plate; 9, round rod; 10, gear; 11, baffle; 12, auxiliary rod; 13, pressure gauge; 14, gas flow regulating valve; 15, valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0019] As is well known, ammonia gas transportation and injection devices are key equipment involved in ammonia gas treatment and application, and they play an important role in multiple industrial fields. The following is a detailed introduction to the ammonia gas transportation and injection devices: I. Ammonia Gas Transportation Device The ammonia gas delivery device is mainly used to transport ammonia gas from the storage container to the point of use. These devices usually include the following key components: Storage container: Used to store liquid or gaseous ammonia. Liquid ammonia is usually stored under high pressure to ensure its stability.

[0020] Delivery pipeline: Connects the storage container and the point of use and is used for the transmission of ammonia gas. The pipeline material needs to have good corrosion resistance to cope with the chemical properties of ammonia gas.

[0021] Booster pump: Used to increase the pressure of ammonia gas to ensure that ammonia gas can be smoothly transported to the point of use. In some cases, a multi-stage booster pump may be required to meet the needs of high-pressure transportation.

[0022] Control system: Used to monitor and regulate the ammonia gas delivery process. This includes the monitoring and control of pressure, flow rate, and temperature to ensure the safety and stability of the delivery process.

[0023] For large-flow ammonia gas delivery systems, such as the bulk special gas supply system (BSGS) in the semiconductor industry, the heating and evaporation devices of the cylinders also need to be considered to ensure the stable supply of ammonia gas. The heating device usually uses a heating blanket or an evaporator to improve the vaporization efficiency of ammonia gas.

[0024] II. Ammonia gas injection device The ammonia gas injection device is mainly used to inject ammonia gas into the target area at a certain speed and pressure. These devices usually include the following key components: Nozzle: The nozzle is the core component of the ammonia gas injection device, and its shape and size directly affect the injection effect. The design of the nozzle needs to consider factors such as the flow rate, pressure, and injection angle of ammonia gas.

[0025] Injection pipe: Connects the nozzle and the ammonia gas supply pipeline and is used to transport ammonia gas to the nozzle. The injection pipe material needs to have good corrosion resistance and strength.

[0026] Control system: Used to control the injection process, including parameters such as injection time, injection volume, and injection pressure. This helps to ensure the accuracy and stability of the injection process.

[0027] In specific application scenarios, such as the SCR denitration system, the ammonia gas injection device also needs to consider the coordination with the catalytic reactor. The injection device needs to adjust the injection volume of each nozzle according to the NOx distribution to achieve the full mixing and reaction of ammonia gas and NOx.

[0028] Example 1 This embodiment discloses an ammonia gas transportation and injection device, including a storage tank 1. A transportation pipeline 2 (the first end of the transportation pipeline 2) is communicated with the side surface of the storage tank 1. One end of the transportation pipeline 2 far from the storage tank 1 (the second end of the transportation pipeline 2) is installed with a branch pipeline 3 (the first end of the branch pipeline 3). One end of the branch pipeline 3 far from the branch pipeline 3 (the second end of the branch pipeline 3) is communicated with a nozzle 4. A valve 15 is installed on the transportation pipeline 2. A first injection plate 5 is fixedly connected inside the nozzle 4. A second injection plate 6 is rotatably connected to the outside of the first injection plate 5. A toothed plate 7 is arranged on the outer peripheral surface of the second injection plate 6. A fixing plate 8 is arranged on the side wall of the nozzle 4. The fixing plate 8 is connected with a round rod 9. A gear 10 is connected to the round rod 9. The gear 10 meshes with the toothed plate 7. A pressure gauge 13 is arranged on the top of the storage tank 1. A gas flow regulating valve 14 is arranged on the transportation pipeline 2. As Figure 3 , both the first injection plate 5 and the second injection plate 6 are provided with a plurality of injection ports. Rotating the second injection plate 6 can adjust the communication size between the first injection plate 5 and the second injection plate 6 (that is, form injection ports of different sizes); Embodiment 2 The ammonia transportation and injection device described in the present invention includes a storage tank 1. One side of the storage tank 1 is connected to a transportation pipeline 2 (the first end of the transportation pipeline 2). The end of the transportation pipeline 2 far from the storage tank 1 (the second end of the transportation pipeline 2) is connected to a branch pipeline 3 (the first end of the branch pipeline 3). The end of the branch pipeline 3 far from the transportation pipeline 2 (the second end of the branch pipeline 3) is connected to a nozzle 4. A valve 15 is installed on the transportation pipeline 2. A first injection plate 5 is arranged inside the nozzle 4. A second injection plate 6 is rotatably connected to the outside of the first injection plate 5. A toothed plate 7 is arranged on the outer peripheral surface of the second injection plate 6. A fixing plate 8 is fixedly connected to the side wall of the nozzle 4. A round rod 9 is fixedly connected to the fixing plate 8. A gear 10 is rotatably connected to the round rod 9. The gear 10 meshes with the toothed plate 7. The fixing plate 8 is located above the toothed plate 7. To prevent the impact generated by the ammonia injection of the nozzle 4 from causing the second injection plate 6 to fall off, an auxiliary rod 12 is fixedly connected to the surface of the toothed plate 7. Rotating the auxiliary rod 12 drives the toothed plate 7 to rotate, and the toothed plate 7 drives the second injection plate 6 to rotate, so as to facilitate the operator to quickly adjust the second injection plate 6. A pressure gauge 13 is arranged on the top of the storage tank 1, which helps the operator to master the storage state of ammonia in the tank, avoid safety accidents such as the rupture of the tank body caused by too high pressure, or affect subsequent transportation and injection operations due to too low pressure. A gas flow regulating valve 14 is arranged on the arc surface of the transportation pipeline 2. By controlling the ammonia flow in the transportation pipeline 2 through the gas flow regulating valve 14, the ammonia transportation volume of the whole system can be adjusted to meet the ammonia requirements under different working conditions. The end of the second injection plate 6 far from the first injection plate 5 is in an arc shape. By making the edge of the second injection plate 6 in an arc shape, it can prevent ammonia from crystallizing and accumulating on the surface of the second injection plate 6, affecting ammonia injection. The inner wall of the branch pipeline 3 is coated with an anti-corrosion coating. The anti-corrosion coating forms a protective film on the inner wall, preventing corrosive substances from contacting the inner wall of the pipeline and extending the service life of the pipeline.

[0029] Embodiment III This embodiment discloses a working method of an ammonia transportation and injection device. The ammonia transportation and injection device includes a storage tank 1, a transportation pipeline 2, a branch pipeline 3, a nozzle 4, a first injection plate 5, a second injection plate 6, a toothed plate 7, a fixing plate 8, a round rod 9, a gear 10, a baffle 11, an auxiliary rod 12, a pressure gauge 13, a gas flow regulating valve 14 and a valve 15. The specific connection relationship is as shown in Embodiment II.

[0030] Specifically, the working method of the ammonia transportation and injection device includes the following steps: Step 1: Rotate the auxiliary rod 12 to drive the toothed plate 7 to rotate. The toothed plate 7 drives the second spray plate 6 to rotate on the surface of the first spray plate 5. The toothed plate 7 drives the gear 10 to rotate on the arc surface of the round rod 9. During the rotation of the gear 10, the fixed plate 8 is always above the second spray plate 6. After stopping the rotation, the toothed plate 7 meshes with the gear 10 to limit the toothed plate 7. At this time, the second spray plate 6 is misaligned with the first spray plate 5, forming spray openings of different sizes, and the spraying range of ammonia is adjusted through the spray openings of different sizes.

[0031] Step 2: When ammonia is transported to the nozzle 4, open the valve 15 and adjust the gas flow regulating valve 14. Control the gas flow by adjusting the opening degree of the valve 15. The actuator generates corresponding actions according to the received control signal, driving the valve core to move in the valve body, thereby changing the flow cross-sectional area of the valve.

[0032] The present invention has the following characteristics: The anti-corrosion coating forms a protective film on the inner wall, preventing the contact between corrosive substances and the inner wall of the pipeline, and extending the service life of the pipeline.

[0033] By making the edge of the second spray plate 6 in an arc shape, it prevents the crystallization and accumulation of ammonia on the surface of the second spray plate 6, which affects the ammonia spraying.

[0034] By controlling the ammonia flow rate in the conveying pipeline 2, the ammonia delivery volume of the entire system can be adjusted to meet the ammonia requirements under different working conditions.

[0035] It helps the operator to master the storage state of ammonia in the tank, avoiding safety accidents such as the rupture of the tank body caused by too high pressure, or affecting subsequent conveying and spraying operations due to too low pressure.

[0036] One end of the round rod 9 is fixedly connected with a fixed plate 8, and the fixed plate 8 is located above the toothed plate 10, preventing the second spray plate 6 from falling due to the impact force generated by the nozzle 4 spraying ammonia.

[0037] Example 4 On the basis of any one of Examples 1 to 3, the current required ammonia spraying range where the current nozzle 4 is applied is divided into multiple spraying areas, each spraying area corresponds to a number of spray holes of the current nozzle 4, and at least one ammonia concentration detection device is arranged in each spraying area; The ammonia delivery and spraying device further includes: Flow detection device: used to detect the flow rate in the second end of the branch pipeline 3; Control device, and the control device is connected to the flow detection device; The control device includes: The first acquisition unit: used to acquire the parameters of the current required ammonia injection range applied by the current nozzle 4. The parameters of the required ammonia injection range include: the total volume of the required ammonia injection range and the application type of ammonia (which can be a specific reaction type (the reactant parameters and reaction conditions are the same for the same application type)); The first determination unit: used to determine, based on the first acquisition unit, the first required ammonia flow rate range during the injection of the current required ammonia injection range applied by the current nozzle 4 (which can be calculated based on the specific relevant parameters of the application type of ammonia in the current required ammonia injection range or determined based on tests); The first control unit: used to control the gas flow regulating valve 14 so that the detection value of the flow rate detection device is the median of the first required ammonia flow rate range acquired by the first acquisition unit, and to inject and test for the first duration within the current required ammonia injection range applied by the current nozzle 4; The second acquisition unit: used to acquire the detection value of the ammonia concentration detection device within the current required ammonia injection range applied by the current nozzle 4 during the first duration; The first calculation unit: used to calculate the injection difference degree of each injection area based on the second acquisition unit; The second determination and warning unit: used to determine that: the injection area where the injection difference degree is greater than the second difference degree is the first injection area, determine the nozzle holes of the current nozzle 4 corresponding to the first injection area as abnormal nozzle holes, and give a warning.

[0038] The first calculation unit calculates based on the following formula: ; is the injection difference degree of the i-th injection area; is the average detection value of the ammonia concentration detection device in the i-th injection area during the current first duration acquired by the second acquisition unit; is the standard detection value (i.e., the standard ammonia concentration) of the ammonia concentration detection device in the i-th injection area when the detection value of the flow rate detection device is the median of the first required ammonia flow rate range during the injection of the current required ammonia injection range applied by the current nozzle 4.

[0039] In one embodiment: the application type of ammonia is a reaction type; ; is the ammonia density; M is the molar mass of ammonia; V is the total volume of the current required ammonia injection range applied by the current nozzle 4; the reaction order of ammonia in the current required ammonia injection range, and k is the reaction rate constant of ammonia in the current required ammonia injection range (related to the specific reaction type); is related to the current required ammonia injection range and The required value corresponding to (reflecting the reaction rate parameter); The beneficial effects of the above technical solution are: Since the nozzle 4 may have abnormal flow rates ejected from some spray holes after long-term use; When the current required ammonia injection range parameters applied to the nozzle 4 are different, different injection effects are required. Therefore, the first required ammonia flow rate range during injection for the current required ammonia injection range applied to the nozzle 4 is determined according to the current required ammonia injection range parameters applied to the nozzle 4; Then, injection tests are carried out with the median value of the first required ammonia flow rate range during injection for the current required ammonia injection range applied to the nozzle 4 that is matched, and the ammonia injection effect (corresponding injection difference degree) for the current required ammonia injection range applied to the nozzle 4 is determined. When the injection effect is abnormal, an alarm is given in a timely manner to facilitate reminding for maintenance of the nozzle 4.

[0040] Embodiment 5, based on any one of Embodiments 1 to 4, The second determination and warning unit is further configured to determine that: the injection area where the injection difference degree is greater than the first difference degree (which can take a value of 0.05) and less than the second difference degree (which can take a value of 0.15) is the second injection area; The control device further includes: The second calculation unit: used to calculate the target injection flow rate during injection for the current required ammonia injection range applied to the current nozzle 4 based on the first calculation unit and the second determination and warning unit when there is no first injection area; after the current first duration is completed, the first control unit controls the gas flow regulating valve 14 so that the detection value of the flow rate detection device is the target injection flow rate during injection for the current required ammonia injection range applied to the current nozzle 4, and injects through the current nozzle 4 into the current required ammonia injection range applied to the current nozzle 4 until the set duration; ; ; is the compensation flow rate corresponding to the i-th second injection area; is the compensation flow rate obtained by combining the i-th second injection area with (for each injection area, a corresponding mapping table of standard ammonia concentration - difference between standard ammonia concentration and actual ammonia concentration - injection area volume - compensation flow rate can be set, and this mapping table can be determined based on tests); N is the total number of second injection areas determined by the second determination and warning unit based on the current first duration; is the first difference degree; is the median value of the first required ammonia flow rate range obtained by the first acquisition unit detected by the flow rate detection device; is the volume of the i-th second injection area.

[0041] The beneficial effects of the above technical solutions are as follows: The spraying effect of the second spraying area is different from the initial spraying effect (such as due to an increase in the nozzle resistance in the nozzle), but it does not reach the abnormal spraying effect (blockage). Based on the standard ammonia concentration, actual ammonia concentration, spraying difference degree, and volume of the second spraying area, the compensation flow rate is determined, and the target spraying flow rate during spraying of the current required ammonia spraying range applied to the current nozzle 4 is obtained by combining the compensation flow rate. The current nozzle 4 sprays the current required ammonia spraying range applied to the current nozzle 4 for a set duration to ensure reliable ammonia spraying for the current required ammonia spraying range.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ammonia delivery and injection device, comprising a storage tank (1), a first end of a delivery pipeline (2) being connected to the storage tank (1), characterized in that: The second end of the delivery pipeline (2) is connected to the first end of the branch pipeline (3), and the second end of the branch pipeline (3) is connected to a nozzle (4), wherein the nozzle (4) comprises a first injection plate (5), a second injection plate (6) is partially rotatably connected to the inner side of the first injection plate (5), and the second injection plate (6) is driven to rotate by a driving mechanism.

2. An ammonia delivery and injection device according to claim 1, characterized in that: The driving mechanism comprises: a tooth plate (7), the tooth plate (7) being arranged on the outer peripheral surface of the second injection plate (6); A fixed plate (8), the fixed plate (8) being fixedly connected to the first injection plate (5); A round rod (9) and a gear (10), wherein the round rod (9) is rotatably connected to the fixed plate (8), the round rod (9) is connected to a gear (10), and the gear (10) is meshed with the toothed plate (7).

3. An ammonia delivery and injection device according to claim 1, characterized in that: The delivery pipeline (2) is installed with a valve (15) and a gas flow regulating valve (14), and the top of the storage tank (1) is provided with a pressure gauge (13).

4. An ammonia delivery and injection device according to claim 2, characterized in that: An auxiliary rod (12) is fixedly connected to the toothed plate (7).

5. The ammonia delivery and injection device according to claim 1, characterized in that: An end of the second injection plate (6) away from the first injection plate (5) is in an arc surface structure.

6. The ammonia delivery and injection device according to claim 1, characterized in that: An anti-corrosion coating is applied on the inner wall of the branch pipe (3).

7. The ammonia delivery and injection device according to claim 1, characterized in that: The ammonia injection range currently required by the current nozzle (4) is divided into a plurality of injection areas, each injection area corresponds to a plurality of injection holes of the current nozzle (4), and at least one ammonia concentration detection device is provided in each injection area; The ammonia delivery and injection device also includes: A flow detection device: used for detecting the flow rate in the second end of the branch pipeline (3); A control device, wherein the control device is connected to the flow detection device; The control device includes: A first acquisition unit is used to acquire parameters of a current required ammonia injection range applied by the current nozzle (4), the parameters of the required ammonia injection range including: a total volume of the required ammonia injection range and an application type of ammonia; A first determining unit is used to determine, based on the first acquiring unit, a first required ammonia flow rate range when the current nozzle (4) injects the current required ammonia injection range applied by the current nozzle (4); A first control unit is used to control the gas flow regulating valve (14) so ​​that the detection value of the flow detection device is the median value of the first required ammonia flow range obtained by the first acquisition unit, and the current required ammonia injection range applied by the current nozzle (4) is sprayed through the current nozzle (4) for a first duration of the test; A second acquisition unit is used to acquire a detection value of an ammonia concentration detection device within a currently required ammonia injection range applied by a current nozzle (4) within a first time period; A first calculation unit: used for calculating the injection difference degree of each injection area based on the second acquisition unit; Second confirmation and early warning unit: Used to determine: a spraying area with a spraying difference greater than a second difference is a first spraying area, determine that a spray hole of a current spray head (4) corresponding to the first spraying area is an abnormal spray hole, and issue an early warning.

8. An ammonia delivery and injection device according to claim 7, characterized in that: The second determination and warning unit is further used to determine: the injection area whose injection difference is greater than the first difference and less than the second difference is the second injection area; The control device also includes: A second calculation unit is used for calculating, when the first injection area does not exist, a target injection flow rate when injecting the currently required ammonia injection range applied to the current nozzle (4) based on the first calculation unit and the second determination and warning unit; After the current first duration is completed, the first control unit controls the gas flow regulating valve (14) so ​​that the flow detection device detects a target injection flow rate when the current nozzle (4) applies the currently required ammonia injection range, and the current nozzle (4) injects the currently required ammonia injection range to the set duration through the current nozzle (4).

9. The ammonia delivery and injection device according to claim 7, characterized in that: The first calculation unit is based on the following formula: ； is the injection difference of the i-th injection area; is an average detection value of the ammonia concentration detection device of the i-th injection area within the current first time period acquired by the second acquisition unit; The standard detection value of the ammonia concentration detection device in the i-th injection area when the flow detection device detection value is the median value of the first required ammonia flow range when the current required ammonia injection range applied by the current nozzle (4) is injected.

10. An ammonia delivery and injection device according to claim 9, characterized in that: The second calculation unit is calculated based on the following formula: ； ； is the compensation flow corresponding to the i-th second injection area; Combined for the i-th second injection area The obtained compensation flow; N is the total number of second injection areas determined by the second determination and warning unit based on the current first duration; is the first degree of difference; is the natural logarithm, e is the natural constant; The detection value of the flow detection device is the median value of the first required ammonia flow range obtained by the first obtaining unit; is the volume of the i-th second injection area.

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