Efficient denitration equipment for biomass furnace

Abstract

The utility model provides efficient denitration equipment for a biomass furnace, which belongs to the technical field of biomass furnaces and comprises a tower body, a preheating component, a spraying component and a catalytic material plate. A mixed gas chamber is mounted on one side of the tower body, and a gas inlet channel is mounted on one side of the mixed gas chamber; according to the utility model, one side of the tower body is provided with the mixed gas chamber, one side of the mixed gas chamber is provided with the gas inlet channel, discharged flue gas enters the mixed gas chamber through the gas inlet channel, the flue gas is preheated by the heating pipe in the gas inlet channel, the heated flue gas enters the mixed gas chamber, and ammonia water sprayed by the nozzle is mixed with the flue gas and enters the tower body. At the moment, the temperature of the flue gas is reduced, after the mixed flue gas is heated again through a rectifying heater in the tower body, the flue gas reacts after passing through a catalytic material plate made of titanium dioxide, nitrogen and water are generated, and the nitrogen and the water are discharged through a drainage pipe and an exhaust pipe, so that denitration treatment is completed, the content of nitrate in the flue gas is reduced, and pollution to the environment is avoided; the environment-friendly development is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass furnaces, in particular to a high-efficiency denitration device for a biomass furnace. Background Art

[0002] The biomass stove uses biomass molded fuel and supplies air through a fan to achieve controllable furnace temperature and air intake, so that the fuel is fully gasified and burned in the furnace. The traditional biomass stove has a small furnace, and the convection cycle oxygen supply from the bottom to the top of the furnace is completed through the suction of the chimney, and the fuel burns from bottom to top. However, adding firewood multiple times is cumbersome, the furnace chamber volume is a fixed value, and the amount of firewood added each time is also a fixed value. In actual application, the amount of firewood added once may not be enough, and multiple times of firewood may be added; or too much firewood may be added at one time, resulting in incomplete use of fuel, causing waste of fuel, and low practicality. Among them, a new type of biomass stove with application number "CN201620168794.7" includes a furnace body, a furnace cavity is provided in the furnace body, and the furnace cavity is an upper open mouth body, and a furnace cavity size adjustment device is provided in the furnace cavity. The utility model discloses a novel biomass stove which is more practical than the traditional biomass stove, and can independently select the size of the furnace cavity according to the actual use situation to maximize the fuel utilization rate. However, there is still some room for improvement in the use of the stove body: the flue gas of the biomass stove during the combustion process will contain a certain amount of nitrate substances. Since it does not have the function of denitrifying the flue gas, the exhausted flue gas has pollution hazards to the environment, which is not conducive to environmental protection development. Utility Model Content

[0003] The purpose of the utility model is to provide a high-efficiency denitrification equipment for a biomass furnace, so as to solve the problem that the flue gas of the biomass furnace mentioned in the above background technology contains a certain amount of nitrate substances during the combustion process, and because it does not have the function of denitrifying the flue gas, the exhausted flue gas has pollution hazards to the environment and is not conducive to environmental protection development.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency denitrification device for a biomass furnace, comprising a tower body, a preheating component, a spraying component and a catalytic material plate;

[0005] Wherein: a mixed gas chamber is installed on one side of the tower body, an air inlet is installed on one side of the mixed gas chamber, the air inlet is connected with the mixed gas chamber, and the mixed gas chamber is connected with the top of the tower body through an air guide pipe;

[0006] The preheating assembly comprises a mounting frame fixedly mounted on the inner wall of the air inlet duct, a plurality of heating tubes are arranged and mounted inside the mounting frame, and heat dissipation fins are mounted on the surface of the heating tubes;

[0007] The spray assembly comprises a main pipe fixedly installed inside the mixed air chamber, a plurality of branch pipes are distributed and installed on the surface of the main pipe, a plurality of nozzles are installed on the surface of the branch pipes, and the nozzles are installed in the direction of the air guide pipe;

[0008] Multiple layers of catalytic material plates are arranged in sequence up and down inside the tower body.

[0009] As a preferred solution of the utility model: an ammonia water tank is provided outside the tower body, a water pump is fixedly installed on one side of the ammonia water tank, the water outlet of the water pump is connected to the main pipeline through a connecting pipe, and a liquid level sensor is installed inside the ammonia water tank.

[0010] As a preferred solution of the utility model: a guide rail is installed on the inner wall of the tower body, a mounting plate is provided inside the tower body, a mounting groove is opened on the surface of the mounting plate, a limiting ring is provided at the bottom of the mounting groove, and the catalytic material plate is placed inside the mounting groove and in contact with the bottom limiting ring.

[0011] As a preferred solution of the utility model: slide bars are installed on both sides of the mounting plate, the slide bars are slidably installed inside the guide rails, and a handle is fixedly installed on the outer side of the mounting plate.

[0012] As a preferred solution of the utility model: high temperature resistant sealing rings are installed on the surface and bottom of the mounting plate.

[0013] As a preferred solution of the utility model: a guide plate is fixedly installed inside the air guide pipe.

[0014] As a preferred solution of the utility model: a rectifier heater is also fixedly installed on the top of the inner wall of the tower body.

[0015] As a preferred solution of the utility model: a drain pipe is installed at the bottom of the tower body, and an exhaust pipe is provided on one side of the drain pipe.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) A mixed gas chamber is provided on one side of the tower body, and an air inlet is installed on one side of the mixed gas chamber. Exhaust flue gas enters the mixed gas chamber through the air inlet. The heating tube inside the air inlet preheats the flue gas. The heated flue gas enters the mixed gas chamber, and the ammonia water sprayed from the nozzle mixes with the flue gas and enters the tower body. At this time, the flue gas temperature is reduced. After the mixed flue gas is heated again by the rectifier heater inside the tower body, the flue gas reacts after passing through the catalytic material plate made of titanium dioxide to generate nitrogen and water, which are discharged through the drain pipe and the exhaust pipe, completing the denitrification treatment, thereby reducing the nitrate content in the flue gas, avoiding pollution to the environment, and being conducive to environmental protection development;

[0018] (2) The tower body is provided with multiple layers of catalytic material plates, which are installed in the installation grooves opened on the surface of the installation plate. The limiting rings at the bottom of the installation grooves play the role of supporting the catalytic material plates. The installation plates slide in the guide rails installed on the inner wall of the tower body through the slide bars installed on both sides. The installation plates are taken out from the tower body by pulling the handle, which facilitates the replacement of the catalytic material plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the preheating component of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the spray assembly of the utility model;

[0023] Figure 5 This is a schematic diagram of the installation structure of the catalytic material plate of the utility model.

[0024] In the figure: 1. tower body; 2. mixing chamber; 3. air inlet; 4. air guide pipe; 5. preheating assembly; 51. mounting frame; 52. heating pipe; 53. cooling fins; 6. spray assembly; 61. main pipeline; 62. branch pipeline; 63. nozzle; 64. ammonia tank; 65. water pump; 66. liquid level sensor; 7. catalytic material plate; 8. guide rail; 9. mounting plate; 91. mounting groove; 92. limit ring; 93. slide bar; 94. handle; 10. sealing ring; 11. guide plate; 12. rectifier heater; 13. drain pipe; 14. exhaust pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 , a high-efficiency denitrification device for a biomass furnace, comprising: a tower body 1, a preheating component 5, a spraying component 6 and a catalytic material plate 7; a mixed gas chamber 2 is installed on one side of the tower body 1, an air inlet 3 is installed on one side of the mixed gas chamber 2, the air inlet 3 is connected to the mixed gas chamber 2, and the mixed gas chamber 2 is connected to the top of the tower body 1 through an air guide pipe 4;

[0027] See also Figure 3 The preheating assembly 5 includes a mounting frame 51 fixedly mounted on the inner wall of the air inlet duct 3 , a plurality of heating tubes 52 are arranged and mounted inside the mounting frame 51 , and heat dissipation fins 53 are mounted on the surface of the heating tubes 52 .

[0028] During specific use: the installation frame 51 installed inside the air inlet duct 3 is equipped with heating tubes 52 arranged inside. When the heating tubes 52 are powered on, the surface temperature rises. When the heating tubes 52 are heated up, the heat is transferred to the cooling fins 53, so that the contact with the flue gas is increased. When the flue gas passes through the cooling fins 53, the temperature will rise. The purpose of increasing the flue gas temperature is to accelerate the fluidity, so as to facilitate sufficient mixing with the subsequent ammonia water.

[0029] See also Figure 4 The spray assembly 6 includes a main pipeline 61 fixedly installed inside the mixed gas chamber 2, a plurality of branch pipelines 62 are distributed and installed on the surface of the main pipeline 61, a plurality of nozzles 63 are installed on the surface of the branch pipeline 62, and the nozzles 63 are installed in the direction of the air guide pipe 4. An ammonia water tank 64 is provided outside the tower body 1, a water pump 65 is fixedly installed on one side of the ammonia water tank 64, and the water outlet end of the water pump 65 is connected to the main pipeline 61 through a connecting pipe, and a liquid level sensor 66 is installed inside the ammonia water tank 64.

[0030] During specific use: after the flue gas enters the mixed gas chamber 2, the water pump 65 works to transport the ammonia water in the ammonia water tank 64 to the main pipeline 61 through the connecting pipe. The ammonia water is diverted to the branch pipeline 62 through the main pipeline 61 and finally sprayed out from the nozzle 63 installed on the surface of the branch pipeline 62, so that the ammonia water is atomized and fully mixed with the flue gas, which is convenient for full contact with the catalyst in the next step. The liquid level sensor 66 installed inside the ammonia water tank 64 is convenient for detecting the amount of ammonia water used, so as to facilitate refilling according to the detected liquid level.

[0031] See also Figure 5 The interior of the tower body 1 is sequentially provided with multiple layers of catalytic material plates 7, a guide rail 8 is installed on the inner wall of the tower body 1, a mounting plate 9 is provided inside the tower body 1, a mounting groove 91 is opened on the surface of the mounting plate 9, a limiting ring 92 is provided at the bottom of the mounting groove 91, the catalytic material plate 7 is placed inside the mounting groove 91 and contacts with the bottom limiting ring 92, sliding bars 93 are installed on both sides of the mounting plate 9, the sliding bars 93 are slidably installed inside the guide rail 8, a handle 94 is fixedly installed on the outer side of the mounting plate 9, and high temperature resistant sealing rings 10 are installed on the surface and bottom of the mounting plate 9.

[0032] During specific use: a plurality of layers of catalytic material plates 7 are arranged inside the tower body 1, and the catalytic material plates 7 are installed inside the mounting grooves 91 opened on the surface of the mounting plate 9. The limiting ring 92 at the bottom of the mounting groove 91 plays the role of supporting the catalytic material plates 7. The mounting plate 9 slides in the guide rails 8 installed on the inner wall of the tower body 1 through the slide bars 93 installed on both sides. The mounting plate 9 is taken out from the inside of the tower body 1 by pulling the handle 94, so that the catalytic material plates 7 can be replaced easily. The high temperature resistant sealing rings 10 installed on the surface and bottom of the mounting plate 9 are in sealing contact with the tower body 1 to prevent gas leakage from the connection between the mounting plate 9 and the tower body 1.

[0033] See also Figure 2 A guide plate 11 is fixedly installed inside the air guide pipe 4, and a rectifier heater 12 is also fixedly installed on the top of the inner wall of the tower body 1.

[0034] During specific use: the guide plate 11 installed inside the air guide pipe 4 facilitates the mixed ammonia water and flue gas mixture to enter the tower body 1, and the rectifier heater 12 installed on the top of the tower body 1 is used to heat the mixture to ensure that the ammonia water and flue gas mixture fully reacts with the catalytic material plate 7.

[0035] See also Figure 1 A drain pipe 13 is installed at the bottom of the tower body 1, and an exhaust pipe 14 is provided on one side of the drain pipe 13.

[0036] During specific use: a drain pipe 13 and an exhaust pipe 14 are installed at the bottom of the tower body 1 . When the ammonia water and the flue gas mixture react after catalyzing the material plate 7 , nitrogen and water are generated and discharged through the drain pipe 13 and the exhaust pipe 14 .

[0037] A mixing chamber 2 is provided on one side of the tower body 1, and an air inlet 3 is installed on one side of the mixing chamber 2. The exhausted flue gas enters the mixing chamber 2 through the air inlet 3. The heating tube 52 inside the air inlet 3 preheats the flue gas. The heated flue gas enters the mixing chamber 2, and the ammonia water sprayed through the nozzle 63 is mixed with the flue gas and enters the tower body 1. At this time, the flue gas temperature is reduced. After the mixed flue gas is heated again by the rectifier heater 12 inside the tower body 1, the flue gas passes through the catalytic material plate 7 made of titanium dioxide to react and generate nitrogen and water, which are discharged through the drain pipe 13 and the exhaust pipe 14, completing the denitrification treatment, thereby reducing the nitrate content in the flue gas, avoiding pollution to the environment, and being beneficial to environmental protection development.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency denitrification device for a biomass furnace, characterized in that: include: A tower body (1), wherein a mixed air chamber (2) is installed on one side of the tower body (1), an air inlet duct (3) is installed on one side of the mixed air chamber (2), the air inlet duct (3) is connected to the mixed air chamber (2), and the mixed air chamber (2) is connected to the top of the tower body (1) via an air guide pipe (4); A preheating assembly (5), the preheating assembly (5) comprising a mounting frame (51) fixedly mounted on the inner wall of the air inlet duct (3), a plurality of heating tubes (52) arranged and mounted inside the mounting frame (51), and heat dissipation fins (53) mounted on the surfaces of the heating tubes (52); A spray assembly (6), the spray assembly (6) comprising a main pipe (61) fixedly mounted inside the mixed gas chamber (2), a plurality of branch pipes (62) being mounted on the surface of the main pipe (61), a plurality of nozzles (63) being mounted on the surface of the branch pipes (62), the nozzles (63) being mounted in a direction toward the air guide pipe (4); Catalytic material plates (7), wherein multiple layers of catalytic material plates (7) are sequentially arranged up and down inside the tower body (1).

2. The high-efficiency denitrification equipment for a biomass furnace according to claim 1, characterized in that: An ammonia water tank (64) is provided outside the tower body (1), a water pump (65) is fixedly installed on one side of the ammonia water tank (64), a water outlet end of the water pump (65) is connected to the main pipeline (61) via a connecting pipe, and a liquid level sensor (66) is installed inside the ammonia water tank (64).

3. The high-efficiency denitrification equipment for a biomass furnace according to claim 1, characterized in that: A guide rail (8) is installed on the inner wall of the tower body (1), a mounting plate (9) is provided inside the tower body (1), a mounting groove (91) is provided on the surface of the mounting plate (9), a limiting ring (92) is provided at the bottom of the mounting groove (91), and the catalytic material plate (7) is placed inside the mounting groove (91) and in contact with the limiting ring (92) at the bottom.

4. The high-efficiency denitrification equipment for a biomass furnace according to claim 3, characterized in that: Slide bars (93) are installed on both sides of the mounting plate (9), and the slide bars (93) are slidably installed inside the guide rail (8). A handle (94) is fixedly installed on the outer side of the mounting plate (9).

5. The high-efficiency denitrification equipment for a biomass furnace according to claim 3, characterized in that: High temperature resistant sealing rings (10) are installed on the surface and bottom of the mounting plate (9).

6. The high-efficiency denitrification equipment for a biomass furnace according to claim 1, characterized in that: A guide plate (11) is fixedly installed inside the air guide pipe (4).

7. The high-efficiency denitrification equipment for a biomass furnace according to claim 1, characterized in that: A rectifying heater (12) is also fixedly mounted on the top of the inner wall of the tower body (1).

8. The high-efficiency denitrification equipment for a biomass furnace according to claim 1, characterized in that: A drainage pipe (13) is installed at the bottom of the tower body (1), and an exhaust pipe (14) is provided on one side of the drainage pipe (13).

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