Efficient biomass feeding device

Abstract

The utility model discloses a kind of high-efficiency biomass into furnace devices, including furnace body and the feeding mechanism of being arranged in the side of furnace body, the furnace body is by integrally arranged water-cooling wall hearth, boiler combustion chamber and boiler air chamber, the water-cooling wall hearth, boiler combustion chamber and boiler air chamber are sequentially arranged from top to bottom, air inlet channel is installed in the side of the boiler air chamber, dust removal equipment is installed in the inside of air inlet channel close to pipe mouth, and induced draft fan is arranged between dust removal equipment and boiler air chamber, the side of the boiler combustion chamber is installed with feeding mechanism, feeding mechanism is used to carry out biomass feeding and auxiliary air supply, exhaust port is opened on the side of the boiler air chamber close to top side, for the steam generated after combustion is discharged. The utility model has the advantages of simple and reasonable structure, stable operation etc.

Description

Technical Field

[0001] This utility model belongs to the field of boiler technology and relates to a high-efficiency biomass feeding device. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy. Existing boilers using traditional screw conveyors may experience wear, blockage, and flameout problems after a period of use, leading to reduced boiler efficiency and potential safety hazards.

[0003] To address this issue, a high-efficiency biomass feeding device was designed to overcome the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a biomass high-efficiency furnace feeding device that is simple and reasonable in structure, convenient in installation and maintenance, stable in operation, and safe and reliable.

[0005] This utility model is achieved through the following technical solution: a high-efficiency biomass feeding device, comprising a furnace body and a feeding mechanism disposed on one side of the furnace body. The furnace body is composed of an integrally formed water-cooled wall furnace, a boiler combustion chamber, and a boiler air chamber. The water-cooled wall furnace, the boiler combustion chamber, and the boiler air chamber are arranged vertically. An air inlet channel is installed on one side of the boiler air chamber. A dust removal device is installed inside the air inlet channel near the pipe opening, and an induced draft fan is disposed between the dust removal device and the boiler air chamber. A feeding mechanism is installed on one side of the boiler combustion chamber for feeding biomass and providing auxiliary air supply. An exhaust port is provided on the side of the boiler air chamber near the top for discharging the steam generated after combustion.

[0006] Preferably, the feeding mechanism consists of a conveying pipe, a jet booster fan, and a feeding pipe. One end of the conveying pipe is inserted into the boiler combustion chamber and connected to it. The other end of the conveying pipe is provided with an inlet. A jet booster fan is provided at the inlet. The outlet of the jet booster fan is inserted into the conveying pipe through an external pipe and connected to it. A feeding pipe is provided at the upper part of the side of the conveying pipe near the inlet. The end of the feeding pipe is provided with a feeding port with a switch valve. After biomass is fed, it is sent into the boiler combustion chamber through the feeding pipe and the conveying pipe in sequence.

[0007] Preferably, the conveying pipe is inclined, with the height of the inlet side of the conveying pipe being higher than the height of the other end of the conveying pipe, which facilitates the feeding of biomass into the boiler combustion chamber.

[0008] Preferably, a feeding air duct is connected to the lower end of the side of the conveying pipe near the boiler combustion chamber. The feeding air duct conveys feeding air to prevent the biomass feed from accumulating and clogging the pipe, and to promote the mixing of the biomass feed with the hot materials in the furnace.

[0009] Preferably, the middle part of the conveying pipe is connected to the side of the boiler combustion chamber via a fixed bracket to ensure the stability of the conveying pipe after installation.

[0010] Preferably, a pressure monitor and a temperature monitor are installed on the outside of the boiler air chamber.

[0011] The beneficial effects of this utility model are as follows:

[0012] The biomass high-efficiency furnace feeding device designed in this utility model utilizes the height difference to build a gravity feeding and jet conveying feeding mechanism before the boiler is to be modified. It also uses jet technology to achieve stable atmospheric pressure fuel delivery to the positive pressure furnace. Combined with feeding air, it improves the overall working efficiency and can effectively solve a series of technical difficulties of traditional spiral auger machinery such as easy wear, jamming, and fire escaping.

[0013] This invention enables more efficient, safe, and stable co-firing of bulk biomass, reduces boiler fuel costs, and effectively prevents fire accidents caused by the outward spread of high-temperature flames from the boiler combustion chamber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0015] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1As shown, a high-efficiency biomass feeding device includes a furnace body 1 and a feeding mechanism disposed on one side of the furnace body 1. The furnace body 1 consists of an integrally formed water-cooled wall furnace 2, a boiler combustion chamber 3, and a boiler air chamber 4, arranged vertically. An air inlet channel 5 is installed on one side of the boiler air chamber 4. A dust removal device 19 is installed inside the air inlet channel 5 near the inlet. An induced draft fan 6 is disposed between the dust removal device 19 and the boiler air chamber 4. The feeding mechanism is installed on one side of the boiler combustion chamber 3 for feeding biomass and providing auxiliary air supply. An exhaust port 7 is opened on the side of the boiler air chamber 4 near the top to discharge the steam generated after combustion. The dust removal device of this utility model can be a conventional simple dust collector, jet dust collector, bag dust collector, magnetic dust collector, etc., whichever meets the actual situation and is existing technology, so it will not be explained in detail.

[0018] The feeding mechanism consists of a conveying pipe 8, a jet booster fan 9, and a feeding pipe 10. One end of the conveying pipe 8 is inserted into and connected to the boiler combustion chamber 3, and the other end is provided with an inlet 17. The jet booster fan 9 is installed at the inlet 17, and the outlet of the jet booster fan 9 is inserted into and connected to the conveying pipe 8 through an external pipe 11. The feeding pipe 10 is located at the upper part of the side of the conveying pipe 8 near the inlet 17. The end of the feeding pipe 10 is provided with a feeding port 12 with a switch valve 18, which is used for feeding biomass. After feeding, the biomass is sequentially fed into the boiler combustion chamber 3 through the feeding pipe 10 and the conveying pipe 8. The conveying pipe 8 is inclined, preferably at an inclination angle of 45 degrees, and the height of the inlet 17 side of the conveying pipe 8 is higher than the height of the other end of the conveying pipe 8, which facilitates the feeding of biomass into the boiler combustion chamber 3.

[0019] The conveying pipe 8 is connected to a feeding air duct 13 at its lower end near the boiler combustion chamber 3. The feeding air duct 13 delivers feeding air to prevent biomass feed from accumulating and clogging the pipe, and to promote mixing of the biomass feed with the hot materials in the furnace. The middle of the side of the conveying pipe 8 is connected to the side of the boiler combustion chamber 3 via a fixed bracket 14 to ensure the stability of the conveying pipe after installation. A pressure monitor 15 and a temperature monitor 16 are installed on the outside of the boiler air chamber 4.

[0020] The biomass high-efficiency furnace feeding device designed in this utility model utilizes the height difference to build a gravity feeding and jet conveying feeding mechanism before the boiler is to be modified. It also uses jet technology to achieve stable atmospheric pressure fuel delivery to the positive pressure furnace. Combined with feeding air, it improves the overall working efficiency and can effectively solve a series of technical difficulties of traditional spiral auger machinery such as easy wear, jamming, and fire escaping.

[0021] This invention enables more efficient, safe, and stable co-firing of bulk biomass, reduces boiler fuel costs, and effectively prevents fire accidents caused by the outward spread of high-temperature flames from the boiler combustion chamber.

[0022] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-efficiency biomass feeding device, comprising a furnace body (1) and a feeding mechanism disposed on one side of the furnace body (1), characterized in that: The furnace body (1) is composed of an integrally set water-cooled wall furnace (2), boiler combustion chamber (3) and boiler air chamber (4). The water-cooled wall furnace (2), boiler combustion chamber (3) and boiler air chamber (4) are arranged vertically. An air inlet channel (5) is installed on one side of the boiler air chamber (4). A dust removal device (19) is installed inside the air inlet channel (5) near the pipe opening. An induced draft fan (6) is set between the dust removal device (19) and the boiler air chamber (4). A feeding mechanism is installed on one side of the boiler combustion chamber (3). The feeding mechanism is used for feeding biomass and providing auxiliary air supply. An exhaust port (7) is opened on the side of the boiler air chamber (4) near the top to discharge the steam generated after combustion.

2. The high-efficiency biomass furnace feeding device according to claim 1, characterized in that: The feeding mechanism consists of a conveying pipe (8), a jet booster fan (9), and a feeding pipe (10). One end of the conveying pipe (8) is inserted into the boiler combustion chamber (3) and connected to the boiler combustion chamber (3). The other end of the conveying pipe (8) is provided with an inlet (17). A jet booster fan (9) is provided at the inlet (17). The outlet of the jet booster fan (9) is inserted into the conveying pipe (8) through an external pipe (11) and connected to the conveying pipe (8). A feeding pipe (10) is provided at the upper end of the side of the conveying pipe (8) near the inlet (17). The end of the feeding pipe (10) is provided with a feeding port (12) with a switch valve (18) for feeding biomass. After feeding, the biomass is fed into the boiler combustion chamber (3) through the feeding pipe (10) and the conveying pipe (8) in sequence.

3. The high-efficiency biomass furnace feeding device according to claim 2, characterized in that: The conveying pipe (8) is set at an angle, and the height of one side of the inlet (17) of the conveying pipe is higher than the height of the other end of the conveying pipe (8), which facilitates the feeding of biomass into the boiler combustion chamber (3).

4. The high-efficiency biomass furnace feeding device according to claim 3, characterized in that: The conveying pipe (8) is connected to the lower end of the side of the boiler combustion chamber (3) by a feeding air pipe (13). The feeding air pipe (13) conveys feeding air to prevent biomass feed from accumulating and clogging the pipe and to promote the mixing of biomass feed with hot materials in the furnace.

5. The high-efficiency biomass furnace feeding device according to claim 4, characterized in that: The middle part of the side of the conveying pipe (8) is connected to the side of the boiler combustion chamber (3) by a fixed bracket (14) to ensure the stability of the conveying pipe after installation.

6. The biomass high-efficiency furnace feeding device according to claim 1 or 5, characterized in that: A pressure monitor (15) and a temperature monitor (16) are installed on the outside of the boiler air chamber (4).

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