Polymer denitration system

Abstract

The utility model relates to the technical field of polymer denitration, in particular to a polymer denitration system with a spray gun cooling function. Comprising an incinerator, a control system, a material conveying unit, a material storage unit, a spray gun unit and a cooling unit. The material conveying unit comprises a first fan, a second fan, a branch pipe and a header pipe; the material storage unit is provided with a storage bin containing a dust remover and a vibrator; a first layer of spray cooling pipe and a second layer of spray cooling pipe of the spray gun unit are respectively communicated with the transport header pipe and the spray system; and an air cooler of the cooling unit is communicated with each cooling pipe and the storage bin through a header pipe. And each key component is reasonably arranged, and the system is further optimized by a plurality of optimal schemes. The system has numerous beneficial effects of prolonging the service life of the spray gun, improving the denitration efficiency, reducing the cost, enhancing the stability and the automation degree of the system, improving the environmental protection effect and the like, and has remarkable practicability and advancement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of high molecular denitration technology, especially to a kind of high molecular denitration system. BACKGROUND

[0002] In today's industrial production field, controlling the emission of nitrogen oxides (NOX) is one of the important tasks of environmental protection. With the increasing strictness of environmental protection regulations, various denitration technologies have emerged, among which high molecular denitration process, as an effective denitration means, has been gradually widely applied. In industrial production, such as thermal power generation, steel, cement and other industries, boilers are common equipment, but these boilers will produce a large amount of nitrogen oxides during operation. In order to reduce the emission of nitrogen oxides, high molecular denitration process emerges as the times require. The basic principle of this process is to select a suitable feeding position on the boiler, and spray the denitration agent into the boiler through a lance, so that the denitration agent is fully mixed with the high-temperature flue gas, and a chemical reaction occurs with nitrogen oxides in the temperature range of 850-950℃, thereby achieving the purpose of denitration.

[0003] In practical application, the existing high molecular denitration system faces many technical problems. Among them, the most prominent problem is the tolerance and service life of the lance in high-temperature environment. Because the temperature inside the boiler is usually very high, the lance is easily affected by high temperature for a long time in such a harsh environment. The material of the lance may undergo physical and chemical changes under the action of high temperature, resulting in a decrease in its structural strength and the occurrence of melting phenomenon, which further affects the normal spraying function of the lance. The damage of the lance not only directly affects the spraying effect of the denitration agent, reduces the denitration efficiency and cannot meet the increasingly strict environmental emission standards, but also increases the maintenance cost and downtime of the system. Frequent replacement of the lance not only consumes manpower and material resources, but also affects the stability and continuity of the entire production process. This not only brings economic burden to the enterprise, but also poses potential threat to the environment. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical problem of damage of traditional high molecular denitration system lance caused by high temperature, and proposes a kind of high molecular denitration system.

[0005] The technical problem of the utility model is solved by the following technical scheme:

[0006] A kind of high molecular denitration system, including incinerator, control system, it further includes material conveying unit, material storage unit, lance unit, cooling unit;

[0007] The material conveying unit includes first fan, second fan, the first fan is connected with first transport branch pipe, the second fan is connected with second transport branch pipe, the first transport branch pipe, second transport branch pipe are communicated with transport main respectively;

[0008] The material storage unit is communicated with the first transportation branch pipe;

[0009] The spray gun unit comprises a first layer of spray cooling pipes and a second layer of spray cooling pipes, which are communicated with the transportation main pipe respectively, the first layer of spray cooling pipes is communicated with the first layer of spray system, the second layer of spray cooling pipes is communicated with the second layer of spray system, and the first layer of spray system and the second layer of spray system are arranged in the incinerator;

[0010] The cooling unit is communicated with the first layer of spray cooling pipes and the second layer of spray cooling pipes respectively.

[0011] In some embodiments, the following technical features are further included:

[0012] The material storage unit comprises a storage bin, the storage bin is used for storing a high-molecular denitration agent, a dust remover and a vibrator are arranged in the storage bin, the storage bin is located above the first transportation branch pipe, a discharging device is arranged at a discharging port of the storage bin, and the discharging device, the dust remover and the vibrator are connected to the control system.

[0013] In some embodiments, the first layer of spray system and the second layer of spray system are respectively composed of a plurality of spray guns, the spray guns are provided with a rotating disc mechanism, and the rotating disc mechanism is provided with a driving system.

[0014] In some embodiments, the first layer of spray system and the second layer of spray system are respectively provided with a cooling unit loop.

[0015] In some embodiments, electromagnetic valves are arranged at positions where the cooling main pipe is communicated with the first layer of spray cooling pipes and the second layer of spray cooling pipes respectively, and the electromagnetic valves at the positions where the cooling main pipe is communicated with the first layer of spray cooling pipes and the second layer of spray cooling pipes are connected to the control system.

[0016] In some embodiments, the cooling main pipe is communicated with the storage bin through a cooling branch pipe, the cooling branch pipe is provided with an electromagnetic valve, and the electromagnetic valve of the cooling branch pipe is connected to the control system.

[0017] In some embodiments, electromagnetic valves are arranged at positions where the transportation main pipe is communicated with the first layer of spray cooling pipes and the second layer of spray cooling pipes respectively, and the electromagnetic valves at the positions where the transportation main pipe is communicated with the first layer of spray cooling pipes and the second layer of spray cooling pipes are connected to the control system.

[0018] The utility model has the advantages of:

[0019] This utility model proposes a polymer denitrification system with features such as a material conveying unit, a material storage unit, a spray gun unit, and a cooling unit. The spray gun unit includes a first layer of spray cooling pipes and a second layer of spray cooling pipes, and the cooling unit is connected to the first layer of spray cooling pipes and the second layer of spray cooling pipes respectively. This allows the first layer of spray cooling pipes and the second layer of spray cooling pipes to alternately cool the spray gun when it is not in operation, thereby cooling the spray gun unit and preventing it from melting due to high temperature. The rotary structure of the spray gun and the modular design of the spray gun itself enable convenient and quick replacement of the spray gun, improving maintenance efficiency and safety, and solving the problem of shortened service life of polymer denitrification systems in high-temperature operating environments in the prior art.

[0020] In some embodiments, the present invention also has the following beneficial effects:

[0021] This utility model features a first-layer spray system and a second-layer spray system, each composed of several spray guns. The spray guns are equipped with a rotary mechanism and other technical features, which enable the combination of the rotary mechanism and multiple spray guns in the first and second-layer spray systems. This increases the flexibility and coverage of the spraying, and further improves the denitrification effect.

[0022] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a polymer denitrification system with spray gun cooling function in an embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of the spray gun and rotary mechanism of a polymer denitrification system with spray gun cooling function in an embodiment of this utility model.

[0025] In the diagram: 1. Material conveying unit; 11. First fan; 12. Second fan; 13. First transport branch pipe; 14. Second transport branch pipe; 15. Transport main pipe; 2. Material storage unit; 21. Storage silo; 24. Feeder; 3. Spray gun unit; 31. First layer spray cooling pipe; 32. Second layer spray cooling pipe; 33. First layer spray system; 34. Second layer spray system; 35. Spray gun; 36. Rotary mechanism; 4. Cooling unit; 41. Air cooler; 42. Cooling main pipe; 43. Cooling branch pipe; 5. Incinerator. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of this utility model.

[0027] It should be noted that when a component is referred to as being "set" on another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected" to another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for fixing, coupling, or communication.

[0028] It should be understood that the terms "upper", "lower", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0030] This utility model embodiment provides a polymer denitrification system with spray gun cooling function, such as Figure 1 As shown, it includes an incinerator 5 and a control system, including a material conveying unit 1, a material storage unit 2, a spray gun unit 3, and a cooling unit 4.

[0031] The material conveying unit 1 includes a first fan 11 and a second fan 12. The first fan 11 is connected to a first transport branch pipe 13, and the second fan 12 is connected to a second transport branch pipe 14. The first transport branch pipe 13 and the second transport branch pipe 14 are respectively connected to the main transport pipe 15.

[0032] The material storage unit 2 includes a storage silo 21, the discharge port of which is connected to the first transport branch pipe 13. The storage silo 21 stores a polymeric denitrification agent and is equipped with a dust collector and a vibrator. The storage silo 21 is located above the first transport branch pipe 13. A feeder 24 is installed at the discharge port of the storage silo 21. The feeder 24, dust collector, and vibrator are all connected to the control system. The main transport pipe 15 has solenoid valves at its connections to the first-layer spray cooling pipe 31 and the second-layer spray cooling pipe 32. All solenoid valves at these connections are connected to the control system.

[0033] The spray gun unit 3 includes a first-layer spray cooling pipe 31 and a second-layer spray cooling pipe 32. The first-layer spray cooling pipe 31 and the second-layer spray cooling pipe 32 are respectively connected to the transport main pipe 15. The first-layer spray cooling pipe 31 is connected to the first-layer spray system 33, and the second-layer spray cooling pipe 32 is connected to the second-layer spray system 34. Both the first-layer spray system 33 and the second-layer spray system 34 are located inside the incinerator 5. The first-layer spray system 33 and the second-layer spray system 34 are each composed of several spray guns 35. Each spray gun 35 is equipped with a rotary mechanism 36, such as... Figure 2 As shown, a drive system is installed inside the rotary mechanism 36. Both the first-layer spray system 33 and the second-layer spray system 34 are equipped with a cooling unit 4 circuit.

[0034] Cooling unit 4 includes a cooler 41, which is connected to a first-layer spray cooling pipe 31 and a second-layer spray cooling pipe 32 via a main cooling pipe 42. Solenoid valves are installed at the connections between the main cooling pipe 42 and the first and second-layer spray cooling pipes 31, and these valves are all connected to a control system. The main cooling pipe 42 is connected to the storage silo 21 via cooling branch pipes 43, which are also equipped with solenoid valves connected to the control system.

[0035] The polymer denitrification system with spray gun cooling function provided in this embodiment includes the following steps in use:

[0036] S1: The control system sends control commands to the solenoid valves, dust collectors, and vibrators of the air cooler 41 and cooling branch pipe 43. The solenoid valve of the cooling branch pipe 43 opens, the air cooler 41 starts and delivers cold air to the cooling main pipe 42. The cold air from the air cooler 41 flows into the cooling branch pipe 43 through the cooling main pipe 42 and is finally blown into the storage silo 21. The dust collector and vibrator in the storage silo 21 start working, and the polymer denitrification agent in the storage silo 21 becomes liquid.

[0037] S2: The control system sends control commands to the feeder 24 and the first blower 11. The feeder 24 starts feeding, and the liquid polymer denitrification agent flows continuously into the first transport branch pipe 13 from the feed port. The first blower 11 starts and blows air into the first transport branch pipe 13. The polymer denitrification agent is continuously blown into the transport main pipe 15 by the air.

[0038] S3: The control system sends a control command to the solenoid valve at the connection between the second fan 12, the main transport pipe 15 and the first layer spray cooling pipe 31. The solenoid valve at the connection between the main transport pipe 15 and the first layer spray cooling pipe 31 opens, the second fan 12 starts and begins to deliver air. The air from the second fan 12 is blown into the main transport pipe 15 through the second transport branch pipe 14. The polymer denitrification agent is blown into the first layer spray cooling pipe 31 by the air and finally flows into the first layer spray system 33. It then flows into the incinerator 5 through several spray guns 35 of the first layer spray system 33.

[0039] S4: The control system sends control commands to the solenoid valves of the cooling branch pipe 43 and the solenoid valve at the connection between the cooling main pipe 42 and the second-layer spray cooling pipe 32. The solenoid valve at the connection between the cooling main pipe 42 and the second-layer spray cooling pipe 32 opens, and the solenoid valve of the cooling branch pipe 43 closes. The cold air from the air cooler 41 flows through the cooling main pipe 42 to the second-layer spray cooling pipe 32. The cold air from the air cooler 41 finally flows into the second-layer spray system 34 and cools down several spray guns 35 of the second-layer spray system 34. Finally, it flows into the circuit of the cooling unit to complete the cooling of the second-layer spray system 34.

[0040] S5: The control system sends control commands to the solenoid valves at the connection points of the cooling main pipe 42 and the first-layer spray cooling pipe 31, the cooling main pipe 42 and the second-layer spray cooling pipe 32, and the transport main pipe 15 and the first-layer spray cooling pipe 31. The solenoid valves at the connection points of the transport main pipe 15 and the first-layer spray cooling pipe 31 are closed, the cooling main pipe 42 and the second-layer spray cooling pipe 32 are closed, and the solenoid valves at the connection points of the cooling main pipe 42 and the first-layer spray cooling pipe 31 are opened. The cold air from the air cooler 41 flows through the cooling main pipe 42 to the first-layer spray cooling pipe 31. The cold air from the air cooler 41 eventually flows into the second-layer spray system 34 and cools down several spray guns 35 of the first-layer spray system 33. Finally, it flows into the loop of the cooling unit to complete the cooling of the first-layer spray system 33.

[0041] S6: The control system sends a control command to the solenoid valve at the connection between the transport main pipe 15 and the second-layer spray cooling pipe 32. The solenoid valve at the connection between the transport main pipe 15 and the second-layer spray cooling pipe 32 opens, and the polymer denitrification agent flows from the transport main pipe 15 into the second-layer spray cooling pipe 32, and finally into the second-layer spray system 34. It then flows into the incinerator 5 through several spray guns 35 of the second-layer spray system 34.

[0042] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0043] 1. The present invention uses a specially designed cooling unit to cool the spray gun, which effectively prevents the spray gun from melting and being damaged in a high-temperature environment, greatly extends the service life of the spray gun, and reduces the cost and labor consumption caused by frequent spray gun replacement.

[0044] 2. The spray gun in this embodiment of the invention can ensure the uniform and continuous spraying of the denitrification agent, thereby making the denitrification reaction more stable, improving the operational stability of the entire denitrification system, and ensuring the reliability of the denitrification effect.

[0045] 3. The good working condition of the spray gun in this embodiment of the utility model helps the denitrification agent to fully contact and react with nitrogen oxides, improves the utilization rate of the denitrification agent, and thus improves the denitrification efficiency, better meeting the environmental emission standards.

[0046] 4. This utility model embodiment reduces the repair and replacement work due to spray gun damage, lowers equipment maintenance costs, and also reduces production losses caused by system downtime for maintenance.

[0047] 5. In this embodiment of the utility model, each electromagnetic valve is connected to the control system, realizing precise and intelligent control of cooling and material conveying, and improving the automation level and ease of operation of the system.

[0048] 6. The dust collector and vibrator in the storage bin of this utility model embodiment help maintain the good condition of the materials and ensure smooth and stable material transportation.

[0049] 7. The efficient denitrification system of this utility model embodiment can reduce nitrogen oxide emissions, play a positive role in environmental protection, and meet the requirements of sustainable development.

[0050] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. A polymer denitrification system, comprising an incinerator and a control system, characterized in that, It also includes a material conveying unit, a material storage unit, a spray gun unit, and a cooling unit; The material conveying unit includes a first fan and a second fan. The first fan is connected to a first transport branch pipe, and the second fan is connected to a second transport branch pipe. The first transport branch pipe and the second transport branch pipe are respectively connected to the main transport pipe. The material storage unit is connected to the first transport branch pipe; The spray gun unit includes a first layer of spray cooling pipes and a second layer of spray cooling pipes. The first layer of spray cooling pipes and the second layer of spray cooling pipes are respectively connected to the main transport pipe. The first layer of spray cooling pipes is connected to the first layer of spray system, and the second layer of spray cooling pipes is connected to the second layer of spray system. Both the first layer of spray system and the second layer of spray system are installed inside the incinerator. The cooling unit is connected to the first layer of spray cooling pipes and the second layer of spray cooling pipes through a main cooling pipe.

2. The polymer denitrification system according to claim 1, characterized in that, The material storage unit includes a storage silo containing a polymer denitrification agent. The storage silo is equipped with a dust collector and a vibrator. The storage silo is located above the first transport branch pipe. The discharge port of the storage silo is equipped with a feeder. The feeder, dust collector, and vibrator are all connected to the control system.

3. The polymer denitrification system according to claim 1, characterized in that, The first-layer spray system and the second-layer spray system are each composed of several spray guns. Each spray gun is equipped with a rotary mechanism, and a drive system is installed inside the rotary mechanism.

4. The polymer denitrification system according to claim 1, characterized in that, Both the first-layer spray system and the second-layer spray system are equipped with cooling unit loops.

5. The polymer denitrification system according to claim 1, characterized in that, Solenoid valves are installed at the connection points between the main cooling pipe and the first-layer spray cooling pipe and the second-layer spray cooling pipe, and the solenoid valves at the connection points between the main cooling pipe and the first-layer spray cooling pipe and the second-layer spray cooling pipe are all connected to the control system.

6. The polymer denitrification system according to claim 1, characterized in that, The main cooling pipe is connected to the storage silo via cooling branch pipes. The cooling branch pipes are equipped with electromagnetic valves, which are connected to the control system.

7. The polymer denitrification system according to claim 1, characterized in that, The main transport pipe is connected to the first-layer spray cooling pipe and the second-layer spray cooling pipe at the connection points, and the solenoid valves at the connection points are all connected to the control system.

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