Energy-saving and emission-reducing device for recycling boiler flue gas

Abstract

The utility model relates to the technical field of boiler flue gas recovery, and discloses an energy-saving and emission-reducing device for recycling boiler flue gas. The energy-saving and emission-reducing device for recycling the boiler flue gas comprises a heat exchanger, a base, a filtering barrel, a water inlet pipe, a heating pipeline, a capillary pipeline, a water outlet pipe, a temperature sensor, a sucking pump, a desulfurization and denitrification layer, an efficient filtering layer, a catalyst layer, a detection device, a flue gas outlet and a pressure gauge, and the flange ring is used for fixing and sealing connection between the flue gas inlet pipe and the heat exchanger, and flue gas leakage is prevented. According to the boiler flue gas recycling, energy-saving and emission-reducing device, through the design of the heat exchanger, waste heat in flue gas can be effectively recycled and used for heating inlet water or achieving other purposes, energy waste is reduced, the overall energy utilization efficiency is improved, and by means of the recycling method, the requirement for external energy is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler fume recovery, in particular to a boiler fume recovery and utilization energy-saving and emission reduction device. Background Art

[0002] Boiler is a commonly used equipment in industrial and civil fields to generate steam or hot water. It is widely used in heating, power generation and various industrial processes. It heats water by burning fuel and converts water into high-temperature and high-pressure steam or hot water to meet different energy needs.

[0003] Traditional boilers have some shortcomings during operation, mainly including relatively low energy efficiency and environmental pollution problems. The energy conversion efficiency of many traditional boilers is not high, resulting in a large amount of heat energy being wasted through flue gas emissions into the atmosphere, which not only increases energy consumption, but also aggravates dependence on fossil fuels. In addition, pollutants such as SOx, NOx and particulate matter contained in the flue gas have a serious impact on the environment and aggravate the air pollution problem. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler flue gas recovery and energy-saving emission reduction device to solve the problems of low energy conversion efficiency and environmental pollution of traditional boilers mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler flue gas recycling and energy-saving emission reduction device, which includes a heat exchanger, a flue gas inlet pipe, an air valve, a flange ring, a base, a filter barrel, a flue gas delivery pipeline, a water inlet pipe, a heating pipeline, a capillary pipeline, a water outlet pipe, a temperature sensor, a control panel, an air pump, a primary filter layer, an activated carbon layer, a metal oxide layer, a desulfurization and denitrification layer, a high-efficiency filter layer, a catalyst layer, a smoke exhaust pipe, a detection device, a smoke outlet and a pressure gauge. The left end of the heat exchanger is provided with a smoke inlet pipe, the upper end of the smoke inlet pipe is provided with an air valve, the right end of the air valve is provided with a flange ring, and the flange ring is provided on the heat exchanger. The left end of the heat exchanger is provided with a base at the right end of the heat exchanger, a filter barrel is provided at the upper end of the base, a smoke conveying pipe is provided between the filter barrel and the heat exchanger, a water inlet pipe is provided at the front end of the heat exchanger, a heating pipe is provided at the rear end of the water inlet pipe, the heating pipe is provided inside the heat exchanger and is an annular pipe, a plurality of capillary pipes are provided in the middle of the ring of the heating pipe, a water outlet pipe is provided at the other end of the heating pipe, a temperature sensor is provided at the upper end of the water outlet pipe, an air valve controls the rate and amount of smoke flowing into the heat exchanger to ensure the high efficiency of the heat exchange process, and a flange ring is used to fix and seal the connection between the smoke inlet pipe and the heat exchanger to prevent smoke leakage.

[0006] Preferably, a control panel is provided at the front end of the heat exchanger, and a vacuum pump is provided at the lower end of the heat exchanger. The pipes of the vacuum pump are respectively connected to the smoke conveying pipe and the heat exchanger. The vacuum pump helps the smoke pass through the heat exchanger and the filter barrel to ensure the fluidity of the smoke.

[0007] Preferably, a primary filter layer is provided at the bottom of the filter barrel, and one end of the smoke conveying pipe is connected to the position of the primary filter layer. The primary filter layer is the first stage of filtration inside the filter barrel to remove large particles in the smoke.

[0008] Preferably, an activated carbon layer is provided on the upper end of the primary filter layer, and a metal oxide layer is provided on the upper end of the activated carbon layer. The activated carbon layer adsorbs organic pollutants and some heavy metals in the flue gas to reduce environmental pollution, and the metal oxide layer removes acidic gases in the flue gas, such as sulfur dioxide, through chemical reactions.

[0009] Preferably, a desulfurization and denitrification layer is provided on the upper end of the metal oxide layer, and a high-efficiency filtration layer is provided on the upper end of the desulfurization and denitrification layer, which is specifically used to treat sulfur oxides and nitrogen oxides in the flue gas to reduce the emission of these harmful gases. The high-efficiency filtration layer captures finer particles and improves the overall purification effect of the flue gas.

[0010] Preferably, a catalyst layer is disposed on the upper end of the high-efficiency filter layer, and a smoke exhaust pipe is disposed on the upper end of the catalyst layer to catalyze further decomposition of residual pollutants in the flue gas and thoroughly purify the flue gas.

[0011] Preferably, a detection device is provided at the upper end of the filter barrel, a smoke outlet is provided at the upper end of the detection device, and a pressure gauge is provided at the upper end of the heat exchanger. The detection device monitors the composition and purification effect of the smoke to ensure that the emission meets environmental protection requirements.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The boiler flue gas recycling energy-saving and emission reduction device can effectively recycle the waste heat in the flue gas through the design of the heat exchanger, which can be used for heating water or other purposes, reducing energy waste and improving the overall energy utilization efficiency. This recycling method not only reduces the demand for external energy, but also reduces operating costs;

[0014] 2. The boiler flue gas recycling energy-saving and emission reduction device has a multi-stage filtration system inside, including an activated carbon layer, a metal oxide layer, and a desulfurization and denitrification layer, which can effectively remove harmful substances in the flue gas, such as SOx, NOx and particulate matter, greatly reducing the emission of pollutants and playing a positive role in improving air quality and protecting the environment;

[0015] 3. The boiler flue gas recovery and energy-saving emission reduction device can realize intelligent control and real-time monitoring of the flue gas recovery and purification process through an integrated control panel and temperature and pressure sensors. This not only ensures the stability and safety of the system operation, but also makes the operation of the equipment more convenient and efficient, meeting the needs of modern industry for intelligent management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heating pipe fitting of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the switch gas valve of the utility model;

[0019] Figure 4 This is a cross-sectional view of the filter barrel of the utility model.

[0020] In the figure: 1. heat exchanger; 2. flue gas inlet pipe; 3. air valve; 4. flange ring; 5. base; 6. filter barrel; 7. flue gas conveying pipeline; 8. water inlet pipe; 9. heating pipeline; 10. capillary pipe; 11. water outlet pipe; 12. temperature sensor; 13. control panel; 14. vacuum pump; 15. primary filter layer; 16. activated carbon layer; 17. metal oxide layer; 18. desulfurization and denitrification layer; 19. high-efficiency filter layer; 20. catalyst layer; 21. exhaust pipe; 22. detection device; 23. flue gas outlet; 24. pressure gauge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4The utility model provides a technical solution: a boiler flue gas recycling energy-saving and emission reduction device, which includes a heat exchanger 1, a flue gas inlet pipe 2, an air valve 3, a flange ring 4, a base 5, a filter barrel 6, a flue gas delivery pipeline 7, a water inlet pipe 8, a heating pipeline 9, a capillary pipe 10, a water outlet pipe 11, a temperature sensor 12, a control panel 13, an air pump 14, a primary filter layer 15, an activated carbon layer 16, a metal oxide layer 17, a desulfurization and denitrification layer 18, a high-efficiency filter layer 19, a catalyst layer 20, a smoke exhaust pipe 21, a detection device 22, a smoke outlet 23 and a pressure gauge 24. The left end of the heat exchanger 1 is provided with a smoke An air inlet pipe 2 and an air valve 3 are arranged at the upper end of the smoke inlet pipe 2, a flange ring 4 is arranged at the right end of the air valve 3, the flange ring 4 is arranged at the left end of the heat exchanger 1, a base 5 is arranged at the right end of the heat exchanger 1, a filter barrel 6 is arranged at the upper end of the base 5, a smoke conveying pipe 7 is arranged between the filter barrel 6 and the heat exchanger 1, a water inlet pipe 8 is arranged at the front end of the heat exchanger 1, a heating pipe 9 is arranged at the rear end of the water inlet pipe 8, the heating pipe 9 is arranged inside the heat exchanger 1, and is an annular pipe, a plurality of capillary pipes 10 are arranged in the middle of the ring of the heating pipe 9, a water outlet pipe 11 is arranged at the other end of the heating pipe 9, and a temperature sensor 12 is arranged at the upper end of the water outlet pipe 11.

[0023] A control panel 13 is provided at the front end of the heat exchanger 1, and an exhaust pump 14 is provided at the lower end of the heat exchanger 1. The pipes of the exhaust pump 14 are respectively connected to the flue gas conveying pipe 7 and the heat exchanger 1. A primary filter layer 15 is provided at the inner bottom end of the filter barrel 6. One end of the flue gas conveying pipe 7 is connected to the position of the primary filter layer 15. An activated carbon layer 16 is provided at the upper end of the primary filter layer 15, and a metal oxide layer 17 is provided at the upper end of the activated carbon layer 16.

[0024] A desulfurization and denitrification layer 18 is arranged on the upper end of the metal oxide layer 17, a high-efficiency filtration layer 19 is arranged on the upper end of the desulfurization and denitrification layer 18, a catalyst layer 20 is arranged on the upper end of the high-efficiency filtration layer 19, a smoke exhaust pipe 21 is arranged on the upper end of the catalyst layer 20, a detection device 22 is arranged on the upper end of the filter barrel 6, a smoke outlet 23 is arranged on the upper end of the detection device 22, and a pressure gauge 24 is arranged on the upper end of the heat exchanger 1.

[0025] Working principle: The flue gas is first introduced into the device through the flue gas inlet pipe 2. During this process, the air valve 3 controls the flow rate and flow of the flue gas to ensure the best heat exchange efficiency. The flue gas then enters the heat exchanger 1, which is the core of the equipment. The cold water introduced by the water inlet pipe 8 is used for heat exchange through the heating pipe 9. The interior of the heating pipe 9 is designed as a ring layout, in which the setting of the capillary tube 10 increases the surface area of ​​contact between water and flue gas, thereby improving the efficiency of heat exchange. The water temperature change during the heat exchange process is monitored in real time by the temperature sensor 12 to ensure that the heating effect meets expectations. The control panel 13 provides the user with an operating interface for the entire heat exchange process, including temperature adjustment, flow control and other functions. The flue gas after heat exchange is sent to the filter barrel 6 through the flue gas delivery pipe 7 for deep purification. The filter barrel 6 is provided with a primary filter layer 15, an activated carbon layer 16, a metal oxide layer 17, a desulfurization and denitrification layer 18, a high-efficiency filter layer 19 and a catalyst layer 20 from bottom to top, forming a multi-stage Purification system, the primary filter layer 15 mainly removes large particles in the flue gas to prepare for subsequent more refined filtering work, the activated carbon layer 16 absorbs organic pollutants and some heavy metals in the flue gas through its wide pore structure, the metal oxide layer 17 specifically neutralizes the acidic gas in the flue gas, the desulfurization and denitrification layer 18 effectively removes harmful gases such as SOx and NOx through chemical reactions, and the high-efficiency filter layer 19 captures finer particles, and the catalyst layer 20 finally catalytically treats the flue gas to completely decompose the remaining harmful substances. The top detection device 22 performs detection to ensure that the flue gas emissions meet environmental protection requirements. After this series of complex heat exchange and multi-stage purification processes, the flue gas is finally discharged to the outside through the exhaust pipe 21, and the heat energy generated during the purification process is transported out through the water outlet pipe 11, which can be used for heating or other heat energy needs, realizing energy recovery and utilization. The pressure gauge 24 monitors the pressure state of the system throughout the process to ensure the safety of the device operation.

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A boiler flue gas recycling and energy-saving emission reduction device, the boiler flue gas recycling and energy-saving emission reduction device comprising a heat exchanger (1), a flue gas inlet pipe (2) and a gas valve (3), characterized in that: A flue gas inlet pipe (2) is arranged at the left end of the heat exchanger (1), an air valve (3) is arranged at the upper end of the flue gas inlet pipe (2), a flange ring (4) is arranged at the right end of the air valve (3), the flange ring (4) is arranged at the left end of the heat exchanger (1), a base (5) is arranged at the right end of the heat exchanger (1), a filter barrel (6) is arranged at the upper end of the base (5), a flue gas conveying pipe (7) is arranged between the filter barrel (6) and the heat exchanger (1), a water inlet pipe (8) is arranged at the front end of the heat exchanger (1), a heating pipe (9) is arranged at the rear end of the water inlet pipe (8), the heating pipe (9) is arranged inside the heat exchanger (1) and is an annular pipe, a plurality of capillary pipes (10) are arranged in the middle of the annular heating pipe (9), a water outlet pipe (11) is arranged at the other end of the heating pipe (9), and a temperature sensor (12) is arranged at the upper end of the water outlet pipe (11).

2. The boiler flue gas recycling and energy-saving emission reduction device according to claim 1 is characterized in that: A control panel (13) is provided at the front end of the heat exchanger (1), and an air extraction pump (14) is provided at the lower end of the heat exchanger (1), wherein a pipeline of the air extraction pump (14) is respectively connected to the smoke delivery pipeline (7) and the heat exchanger (1).

3. The boiler flue gas recycling and energy-saving emission reduction device according to claim 1 is characterized in that: A primary filter layer (15) is provided at the inner bottom end of the filter barrel (6), and one end of the smoke conveying pipe (7) is connected to the position of the primary filter layer (15).

4. The boiler flue gas recycling and energy-saving emission reduction device according to claim 3 is characterized by: An activated carbon layer (16) is arranged at the upper end of the primary filter layer (15), and a metal oxide layer (17) is arranged at the upper end of the activated carbon layer (16).

5. The boiler flue gas recycling and energy-saving emission reduction device according to claim 4 is characterized in that: A desulfurization and denitrification layer (18) is arranged on the upper end of the metal oxide layer (17), and a high-efficiency filtration layer (19) is arranged on the upper end of the desulfurization and denitrification layer (18).

6. The boiler flue gas recycling and energy-saving emission reduction device according to claim 5 is characterized by: A catalyst layer (20) is provided at the upper end of the high-efficiency filter layer (19), and a smoke exhaust pipe (21) is provided at the upper end of the catalyst layer (20).

7. The boiler flue gas recycling and energy-saving emission reduction device according to claim 1 is characterized by: A detection device (22) is provided at the upper end of the filter barrel (6), a smoke outlet (23) is provided at the upper end of the detection device (22), and a pressure gauge (24) is provided at the upper end of the heat exchanger (1).

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