Intelligent temperature control reaction device for biomass boiler denitration system
Patent Information
- Application Number
- CN202522176619.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-15
AI Technical Summary
[0004]本实用新型的目的在于提供一种生物质锅炉脱硝系统智能温控反应装置，以解决上述背景技术中提出的生物质燃料成分复杂，燃烧时产生的氮氧化物（NOx）浓度波动较大，而传统的脱硝技术（如SNCR或SCR）对反应温度极为敏感，缺少一种温控反应装置，导致温度过高或过低都会显著降低脱硝效率的问题
1、通过烟气温度检测器、温度传感器、烟气阀板、电机、通气孔和分气管的设置，实现了对烟气温度的精准检测与智能调控，温度传感器持续监测烟气温度检测器内的温度变化，并将实时数据传输至PLC控制系统，系统根据预设温度参数自动调节电机运转，驱动烟气阀板精确旋转，使通气孔与对应分气管形成最佳通路配置，当监测到烟气温度超过设定阈值时，系统自动引导高温烟气通过分气管进入烟气冷却器进行快速降温，当检测到温度偏低时，则引导烟气通过另一路分气管进入烟气加热器进行升温补偿，这种智能温控机制有效维持了烟气在脱硝反应中的最佳温度范围，既显著提升了脱硝系统的处理效率，又有效防止了因温度异常导致的催化剂性能衰减和设备损伤。
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Figure CN224730682U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of boiler denitrification equipment, specifically relating to an intelligent temperature control reaction device for a biomass boiler denitrification system. Background Technology
[0002] A biomass boiler denitrification system is an environmentally friendly technology device used to reduce nitrogen oxide (NOx) emissions generated during biomass combustion. Biomass boilers use biomass pellets, wood chips, straw, etc. as fuel, which produce nitrogen oxides during combustion. These substances are harmful to the environment and human health. The denitrification system converts these harmful gases into harmless nitrogen and water through physical or chemical methods, thereby reducing emission concentrations and meeting environmental protection requirements. Common denitrification technologies include selective non-catalytic reduction (SNCR) and selective catalytic reduction (SCR). SNCR technology involves injecting a reducing agent (such as ammonia or urea solution) into the boiler furnace, which reacts with nitrogen oxides at high temperatures to produce nitrogen and water. SCR technology involves injecting a reducing agent into the flue gas, and under the action of a catalyst, reducing nitrogen oxides to nitrogen and water at lower temperatures.
[0003] However, biomass fuels have complex compositions, and the concentration of nitrogen oxides (NOx) produced during combustion fluctuates greatly. Traditional denitrification technologies (such as SNCR or SCR) are extremely sensitive to reaction temperature and lack a temperature control device, which means that excessively high or low temperatures will significantly reduce denitrification efficiency. Utility Model Content
[0004] The purpose of this invention is to provide an intelligent temperature control reaction device for a biomass boiler denitrification system, in order to solve the problem mentioned in the background art that biomass fuel has a complex composition and the concentration of nitrogen oxides (NOx) produced during combustion fluctuates greatly. Traditional denitrification technologies (such as SNCR or SCR) are extremely sensitive to reaction temperature, and the lack of a temperature control reaction device leads to a significant reduction in denitrification efficiency due to excessively high or low temperatures.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent temperature control reaction device for a biomass boiler denitrification system, comprising a boiler and an oxygen pipe and a gas pipe installed at the bottom of the boiler; A support frame is provided on one side of the boiler, a blower is provided on the support frame, a support rod is provided on the support frame, a hopper is provided on the support rod, and a feeding channel is provided between the hopper and the boiler; A gas supply pipe is installed at the top of the boiler, and a flue gas temperature detector is installed above the gas supply pipe. Temperature sensors are installed on both sides of the flue gas temperature detector. A flue gas valve plate is installed inside the flue gas temperature detector, and a vent hole is provided on the flue gas valve plate. A motor is installed at the top center of the flue gas temperature detector, and the motor is powered by an external power source. Two gas distribution pipes are installed on the flue gas temperature detector. A mounting frame is installed on the outside of the boiler, and a flue gas heater and a flue gas cooler are respectively installed on the mounting frame. A gas outlet pipe is provided on the flue gas heater and the flue gas cooler.
[0006] Preferably, the gas supply pipe is welded to the flue gas temperature detector, the temperature sensor is fixedly installed to the flue gas temperature detector, the motor is fixedly installed to the flue gas temperature detector by screws, the flue gas valve plate is fixedly connected to the output shaft of the motor, and the motor can drive the flue gas valve plate to rotate.
[0007] Preferably, the temperature sensor can detect the flue gas temperature inside the flue gas temperature detector. After detecting the temperature, the temperature sensor can transmit an electrical signal to an external PLC device, which can then control the motor switch. The rotation of the flue gas valve plate can connect the flue gas temperature detector to one of the gas distribution pipes.
[0008] Preferably, the gas distribution pipe is welded to the flue gas temperature detector, the two gas distribution pipes are fixedly connected to the flue gas heater and the flue gas cooler respectively, one side of the mounting frame is welded to the boiler, and the flue gas heater and the flue gas cooler are respectively installed on the upper and lower layers of the mounting frame.
[0009] Preferably, a heating element is provided at one end of the flue gas heater, and multiple sets of heating wires are provided on the inner wall of the flue gas heater. One end of each heating wire is connected to the heating element. The heating element can be connected to an external power source to heat the heating wires. The exhaust pipe is welded to the flue gas heater.
[0010] Preferably, the flue gas cooler has multiple layers of heat dissipation plates inside, and a connecting pipe is provided between the heat dissipation plates. The connecting pipe is welded to the heat dissipation plates. Two cooling water inlets are provided on the outside of the flue gas cooler, through which cooling water can be supplied to the heat dissipation plates.
[0011] Preferably, the exhaust pipe is welded to the flue gas cooler, and the flue gas in the distribution pipe passes through the heat dissipation plate in sequence to cool the flue gas temperature.
[0012] Compared with the prior art, this utility model provides an intelligent temperature control reaction device for a biomass boiler denitrification system, which has the following beneficial effects: 1. By configuring a flue gas temperature detector, temperature sensor, flue gas valve plate, motor, vent, and distribution pipe, precise detection and intelligent control of flue gas temperature are achieved. The temperature sensor continuously monitors the temperature change within the flue gas temperature detector and transmits the real-time data to the PLC control system. The system automatically adjusts the motor operation according to preset temperature parameters, driving the flue gas valve plate to rotate precisely, ensuring that the vent and the corresponding distribution pipe form the optimal pathway configuration. When the flue gas temperature exceeds the set threshold, the system automatically guides the high-temperature flue gas through the distribution pipe into the flue gas cooler for rapid cooling. When the temperature is detected to be too low, the flue gas is guided through another distribution pipe into the flue gas heater for temperature compensation. This intelligent temperature control mechanism effectively maintains the optimal temperature range for the flue gas in the denitrification reaction, significantly improving the processing efficiency of the denitrification system and effectively preventing catalyst performance degradation and equipment damage caused by abnormal temperature.
[0013] 2. Through the configuration of flue gas heater, heating element, heating wire, flue gas cooler, cooling water inlet, heat dissipation plate, and connecting pipe, the heating element drives the heating wire to rapidly heat the medium in the flue gas heater, ensuring that the denitrification reaction is always in the most suitable temperature environment. The flue gas cooler, through the circulating cooling water supply from the cooling water inlet, combined with the expanded heat dissipation area of the multi-layer heat dissipation plate and the detour cooling path designed by the connecting pipe, achieves rapid cooling of high-temperature flue gas. This dual-mode temperature control system can not only accurately maintain the reaction temperature, but also effectively prevent the catalyst from being deactivated due to temperature fluctuations, ensuring the long-term stable operation of the denitrification system. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the internal structure of the flue gas temperature detector of this utility model.
[0016] Figure 3 This is a schematic diagram of the internal structure of the flue gas heater of this utility model.
[0017] Figure 4 This is a schematic diagram of the internal structure of the flue gas cooler of this utility model.
[0018] In the diagram: 1. Boiler; 2. Oxygen pipe; 3. Gas pipe; 4. Bracket; 5. Support rod; 6. Blower; 7. Feeding channel; 8. Hopper; 9. Temperature sensor; 10. Gas delivery pipe; 11. Flue gas temperature detector; 12. Gas distribution pipe; 13. Flue gas heater; 14. Gas outlet pipe; 15. Mounting bracket; 16. Cooling water inlet; 17. Heating element; 18. Flue gas cooler; 19. Heat sink; 20. Flue gas valve plate; 21. Connecting pipe; 22. Vent hole; 23. Motor; 24. Heating wire. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] This utility model provides, for example Figure 1-4 The intelligent temperature control reaction device for a biomass boiler denitrification system shown includes a boiler 1 and an oxygen pipe 2 and a gas pipe 3 installed at the bottom of the boiler 1. A support 4 is provided on one side of the boiler 1. A blower 6 is provided on the support 4. A support rod 5 is provided on the support 4. A hopper 8 is provided on the support rod 5. A feeding channel 7 is provided between the hopper 8 and the boiler 1. A gas supply pipe 10 is installed at the top of the boiler 1. A flue gas temperature detector 11 is installed above the gas supply pipe 10. Temperature sensors 9 are installed on both sides of the flue gas temperature detector 11. A flue gas valve plate 20 is installed inside the flue gas temperature detector 11. A vent hole 22 is installed on the flue gas valve plate 20. A motor 23 is installed at the center of the top of the flue gas temperature detector 11. The motor 23 is powered by an external power supply. Two gas distribution pipes 12 are installed on the flue gas temperature detector 11. A mounting frame 15 is installed on the outside of the boiler 1. A flue gas heater 13 and a flue gas cooler 18 are installed on the mounting frame 15. An exhaust pipe 14 is installed on the flue gas heater 13 and the flue gas cooler 18.
[0021] In this embodiment, the biomass boiler denitrification system is an environmentally friendly technology device for reducing nitrogen oxide (NOx) emissions generated during biomass combustion. The biomass boiler denitrification system is used as follows: First, gas is introduced into the boiler 1 through the gas pipe 3, and oxygen is provided for combustion through the oxygen pipe 2. The blower 6 is started to enhance combustion efficiency. Biomass fuel is put into the hopper 8, and the fuel is transported into the boiler 1 for combustion through the feeding channel 7 on the support rod 5. Finally, the flue gas is discharged from the boiler through the gas transmission pipe 10 and denitrification is carried out through the subsequent reducing agent to achieve efficient combustion and reduce nitrogen oxide emissions.
[0022] like Figure 1 and Figure 2As shown, the gas supply pipe 10 is welded to the flue gas temperature detector 11, the temperature sensor 9 is fixedly installed to the flue gas temperature detector 11, the motor 23 is fixedly installed to the flue gas temperature detector 11 by screws, the flue gas valve plate 20 is fixedly connected to the output shaft of the motor 23, the motor 23 can drive the flue gas valve plate 20 to rotate, the temperature sensor 9 can detect the flue gas temperature inside the flue gas temperature detector 11, and after the temperature sensor 9 detects the temperature, it can transmit the electrical signal to the external PLC device, and then control the switch of the motor 23 through the external PLC device. The rotation of the flue gas valve plate 20 can connect the flue gas temperature detector 11 to one of the gas distribution pipes 12, the gas distribution pipe 12 is welded to the flue gas temperature detector 11, the two gas distribution pipes 12 are fixedly connected to the flue gas heater 13 and the flue gas cooler 18 respectively, one side of the mounting frame 15 is welded to the boiler 1, and the flue gas heater 13 and the flue gas cooler 18 are respectively installed on the upper and lower layers of the mounting frame 15.
[0023] Preferably, by setting up a flue gas temperature detector 11, a temperature sensor 9, a flue gas valve plate 20, a motor 23, a vent 22, and a gas distribution pipe 12, the flue gas temperature can be detected and intelligently controlled. The temperature sensor 9 can monitor the flue gas temperature in the flue gas temperature detector 11 in real time and transmit the signal to an external PLC device. The PLC device controls the start and stop of the motor 23 according to a preset temperature threshold, thereby driving the flue gas valve plate 20 to rotate, so that the vent 22 is aligned with the corresponding gas distribution pipe 12. When the flue gas temperature is too high, the flue gas enters the flue gas cooler 18 through the gas distribution pipe 12 for cooling. When the flue gas temperature is too low, the flue gas enters the flue gas heater 13 through another gas distribution pipe 12 for heating. This dynamic adjustment mechanism ensures that the flue gas is always in the optimal reaction temperature range, which not only improves the denitrification efficiency, but also avoids catalyst failure or equipment damage caused by temperature fluctuations.
[0024] like Figure 3 and Figure 4 As shown, a heating element 17 is provided at one end of the flue gas heater 13. Multiple sets of heating wires 24 are provided on the inner wall of the flue gas heater 13. One end of each heating wire 24 is connected to the heating element 17. The heating element 17 can be connected to an external power source to heat the heating wires 24. The exhaust pipe 14 is welded to the flue gas heater 13. The flue gas cooler 18 is provided with multiple layers of heat dissipation plates 19. A connecting pipe 21 is provided between the heat dissipation plates 19. The connecting pipe 21 is welded to the heat dissipation plates 19. Two cooling water inlets 16 are provided on the outside of the flue gas cooler 18. Cooling water can be supplied to the heat dissipation plates 19 through the cooling water inlets 16. The exhaust pipe 14 is welded to the flue gas cooler 18. The flue gas in the gas distribution pipe 12 passes through the heat dissipation plates 19 in sequence to cool the flue gas temperature.
[0025] Preferably, the arrangement of the flue gas heater 13, heating element 17, heating wire 24, flue gas cooler 18, cooling water inlet 16, heat dissipation plate 19 and connecting pipe 21 enables the heating and cooling of flue gas. The heating element 17 drives the heating wire 24 to rapidly heat the flue gas in the flue gas heater 13, ensuring that the denitrification reaction takes place within the optimal temperature range. The flue gas cooler 18 injects cooling water through the cooling water inlet 16, and in conjunction with the meandering heat dissipation structure of the multi-layer heat dissipation plate 19 and connecting pipe 21, it can efficiently reduce the excessively high flue gas temperature and prevent catalyst failure.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A smart temperature control reaction device for a biomass boiler denitrification system, comprising a boiler (1) and an oxygen pipe (2) and a gas pipe (3) disposed at the bottom of the boiler (1). A support (4) is provided on one side of the boiler (1), a blower (6) is provided on the support (4), a support rod (5) is provided on the support (4), a hopper (8) is provided on the support rod (5), and a feeding channel (7) is provided between the hopper (8) and the boiler (1). Its features are: The boiler (1) is provided with a gas supply pipe (10) at the top. A flue gas temperature detector (11) is provided above the gas supply pipe (10). Temperature sensors (9) are provided on both sides of the flue gas temperature detector (11). A flue gas valve plate (20) is provided inside the flue gas temperature detector (11). A vent hole (22) is provided on the flue gas valve plate (20). A motor (23) is provided at the top center of the flue gas temperature detector (11). The motor (23) is powered by an external power supply. Two gas distribution pipes (12) are provided on the flue gas temperature detector (11). A mounting frame (15) is provided on the outside of the boiler (1). A flue gas heater (13) and a flue gas cooler (18) are provided on the mounting frame (15). An outlet pipe (14) is provided on the flue gas heater (13) and the flue gas cooler (18).
2. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 1, characterized in that: The gas supply pipe (10) is welded to the flue gas temperature detector (11), the temperature sensor (9) is fixedly installed to the flue gas temperature detector (11), the motor (23) is fixedly installed to the flue gas temperature detector (11) by screws, the flue gas valve plate (20) is fixedly connected to the output shaft of the motor (23), and the motor (23) can drive the flue gas valve plate (20) to rotate.
3. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 2, characterized in that: The temperature sensor (9) can detect the flue gas temperature inside the flue gas temperature detector (11). After detecting the temperature, the temperature sensor (9) can transmit an electrical signal to an external PLC device, and then control the switch of the motor (23) through the external PLC device. The rotation of the flue gas valve plate (20) can connect the flue gas temperature detector (11) to one of the gas distribution pipes (12).
4. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 3, characterized in that: The gas distribution pipe (12) is welded to the flue gas temperature detector (11), and the two gas distribution pipes (12) are fixedly connected to the flue gas heater (13) and the flue gas cooler (18) respectively. One side of the mounting frame (15) is welded to the boiler (1), and the flue gas heater (13) and the flue gas cooler (18) are respectively installed on the upper and lower layers of the mounting frame (15).
5. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 1, characterized in that: The flue gas heater (13) is provided with a heating element (17) at one end. Multiple sets of electric heating wires (24) are provided on the inner wall of the flue gas heater (13). One end of each electric heating wire (24) is connected to the heating element (17). The heating element (17) can be connected to an external power source to heat the electric heating wires (24). The exhaust pipe (14) is welded to the flue gas heater (13).
6. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 1, characterized in that: The flue gas cooler (18) is provided with multiple layers of heat dissipation plates (19), and a connecting pipe (21) is provided between the heat dissipation plates (19). The connecting pipe (21) is welded to the heat dissipation plates (19). Two cooling water inlets (16) are provided on the outside of the flue gas cooler (18), and cooling water can be delivered to the heat dissipation plates (19) through the cooling water inlets (16).
7. The intelligent temperature control reaction device for a biomass boiler denitrification system according to claim 6, characterized in that: The exhaust pipe (14) is welded to the flue gas cooler (18), and the flue gas in the distribution pipe (12) can be cooled by passing through the heat dissipation plate (19).