A highly efficient and energy-saving device using biomass as fuel

Abstract

The invention discloses a high-efficiency energy-saving device using biomass as fuel. The device uses biomass materials as fuel. On the one hand, it is easy to obtain and relatively cheap. On the other hand, it also uses a new energy source to reduce the pressure of primary energy use and respond to the national call for energy conservation and emission reduction. The device is characterized by comprising a drying system, a conveying system, a combustion system and a waste heat recovery system. The drying system and the crushing system can fully and efficiently burn the fuel. The waste heat recovery system conveys the heat of the high-temperature flue gas to the drying stage to achieve efficient use of heat. The ashes after combustion can be collected and used in crops to fertilize the land and utilize waste. The whole process is basically automated, which greatly reduces manual operation and is very convenient.

Description

Technical Field

[0001] The present invention relates to the field of energy and energy conservation and emission reduction, and in particular to high-efficiency energy-saving equipment using biomass as fuel. Background Art

[0002] Biomass refers to various organisms produced by photosynthesis using the atmosphere, water, land, etc., that is, all living organic matter that can grow is generally called biomass. Biomass includes all plants, microorganisms, animals that feed on plants and microorganisms, and their waste products. Representative biomass includes crops, crop waste, wood, wood waste, and animal manure. It is renewable, low-pollution, and widely distributed. Biomass energy is the energy provided by living plants in nature. These plants use biomass as a medium to store solar energy and are renewable energy. It is calculated that the energy stored in biomass is twice the total energy consumption in the world. Therefore, using biomass energy as fuel is convenient and cheap on the one hand, and on the other hand, it is also a new energy source to reduce the pressure of primary energy use and respond to the national call for energy conservation and emission reduction. Some traditional biomass combustion equipment cannot understand the temperature in the furnace very well, and the moisture content of biomass fuel may be too high when it is sent into the furnace for combustion, resulting in poor combustion effect and low combustion efficiency. In view of the above problems, the present invention aims to set a temperature instrument to observe the temperature in the furnace. In addition, the biomass is dried and crushed before being sent into the furnace, and the high-temperature flue gas generated by the combustion is sent to the drying stage to realize heat recovery and utilization. Summary of the invention

[0003] The patent of this invention mainly aims at the deficiencies of the existing technology and provides a reasonable solution to improve the combustion efficiency and realize the heat recovery while monitoring the temperature in the furnace.

[0004] The technical solution of the patent of this invention is as follows:

[0005] A high-efficiency energy-saving equipment using biomass as fuel, comprising a drying system, a conveying system, a combustion system and a waste heat recovery system. One end of the conveying system is arranged in the drying system, and the fuel is dried by the drying system and then delivered by the conveying system; the other end of the conveying system is connected to the combustion system to burn the fuel. A waste heat recovery system is arranged between the combustion system and the drying system to convey the heat of the combustion system to the drying system for reuse.

[0006] Furthermore, the drying system includes a drying box, the interior of which is separated into an upper layer and a lower layer by an isolation plate. The upper and lower layers are both provided with doors that can be opened independently. Several electric heating tubes are arranged on the top of the upper layer, and the lower layer is connected to the waste heat recovery system.

[0007] Furthermore, the conveying system includes a conveyor belt shell, a conveyor belt and a curtain. An opening for installing the conveyor belt at the same height is provided on the right side of the upper layer of the drying box. One end of the conveyor belt shell is connected to the right side opening of the upper layer of the drying box, and a curtain is provided on the other end. One end of the conveyor belt is arranged inside the right side opening of the upper layer of the drying box, and the other end passes through the conveyor belt shell and extends to the position of the combustion system.

[0008] Furthermore, the combustion system includes a crusher and a combustion furnace. The crusher receives the fuel from the conveying system, and the crushed fuel is sent to the combustion furnace for combustion. The combustion furnace is divided into three layers. The lower layer is equipped with an ash collector to collect waste residue after combustion. The middle layer is the fuel area. A burner is arranged at the bottom of the middle layer to ignite the fuel. The lower layer and the middle layer are separated by a porous fence. The upper layer is used to place things that need to be heated according to actual needs.

[0009] Furthermore, the waste heat recovery system includes a smoke exhaust fan and a conveying pipeline. The combustion zone of the combustion system is provided with a waste heat exhaust hole, and the lower layer of the drying box of the drying system is provided with a waste heat inlet hole. The waste heat exhaust hole and the waste heat inlet hole are connected through a conveying pipeline, and the high-temperature flue gas of the combustion system is conveyed to the drying system through the smoke exhaust fan.

[0010] Furthermore, the combustion furnace is made of refractory materials, an accident handling hole and an observation hole are arranged on the combustion furnace, a thermocouple is arranged in the combustion furnace, and a temperature meter is installed on the surface of the combustion furnace to display the temperature in the furnace.

[0011] Furthermore, a conveyor belt accident handling hole is provided on the top of the conveyor belt shell.

[0012] Furthermore, the surface of the drying box is provided with an electric heating tube forced shutdown button, an electric heating tube shutdown button and an electric heating tube on button.

[0013] The beneficial effects of the present invention are as follows: the fuel drying in the drying stage allows the fuel to reach the ignition point faster and ignite and burn, thereby improving the combustion efficiency; the crusher further crushes the fuel so that the fuel can be fully burned, thereby increasing the combustion efficiency again; the design of the accident handling hole provides convenience for future maintenance; the design of the observation hole can better observe the combustion conditions in the furnace; the design of the thermocouple heat shield allows the temperature to be accurately reflected on the temperature instrument; finally, through the recovery and utilization of waste heat, the energy utilization rate is improved and energy is saved; it is basically fully automated control, which greatly reduces manual operation and is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the waste heat recovery system of the present invention;

[0016] Figure 3 It is a structural schematic diagram of a crusher of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the ash collector of the present invention;

[0018] Figure 5 It is a schematic diagram of the porous fence structure of the present invention;

[0019] In the figure: 1. Drying box; 2. Electric heating tube forced shutdown button; 3. Electric heating tube shutdown button; 4. Electric heating tube on button; 5. Electric heating tube; 6. Waste heat air inlet hole; 7. Isolation plate; 8. Conveyor belt accident handling hole; 9. Conveyor belt; 10. Support column; 11. Crusher; 12. Ash collector; 13. Porous fence; 14. Burner; 15. Combustion furnace; 16. Temperature display; 17. Waste heat exhaust hole; 18. Conveyor belt shell; 19. Curtain; 20. Observation hole; 21. Accident handling hole; 22. Smoke exhaust fan. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1-5 As shown, a high-efficiency energy-saving device using biomass as fuel includes a drying box 1, an electric heating tube forced shutdown button 2, an electric heating tube shutdown button 3, an electric heating tube on button 4, an electric heating tube 5, a waste heat air inlet hole 6, a partition plate 7, a conveyor belt accident handling hole 8, a conveyor belt 9, a support column 10, a crusher 11, an ash collector 12, a porous fence 13, a burner 14, a combustion furnace 15, a temperature display 16, a waste heat exhaust hole 17, a conveyor belt shell 18, a curtain 19, an observation hole 20, an accident handling hole 21 and a smoke exhaust fan 22.

[0022] Drying system: the surface of the drying box 1 is provided with an electric heating tube forced shutdown button 2, an electric heating tube shutdown button 3, and an electric heating tube on button 4 to prevent the electric heating tube 5 from being unable to be turned off. After the biomass fuel is placed in the upper layer of the drying box 1, if it is dry, it is directly placed on the conveyor belt 9 to save energy. Otherwise, the electric heating tube 5 is turned on, and the number of electric heating tubes 5 turned on is selective. After heating for a period of time, the moisture in the fuel is basically removed, and then it enters the conveying system.

[0023] The conveying system, after drying, is transported through the conveyor belt 9, which is heat-resistant and driven by a motor. The end of the conveying system is covered by a curtain 19 to reduce heat loss. It is tilted to let it fall into the crusher 11 by itself. The speed of the conveyor belt can be adjusted as needed to control the speed at which the fuel enters the crusher 11.

[0024] Combustion system, turn on the crusher 11 switch, after passing through the crusher 11, the fuel falls into the combustion zone 15, and the degree of crushing can be controlled by adjusting the blades of the crusher 11 as needed. The fuel entering the combustion zone 15 still has a certain temperature at this time, so it reaches the ignition point faster and makes it easy to burn. After entering the combustion zone 15, ignite the burner 14 to make the fuel burn. The burnt ashes have a special ash collector 12, and the ashes can be poured into the fertile land in the field for waste utilization. In addition, the accident handling hole 21 on the surface can handle emergency events, the observation hole 20 can observe the combustion situation in the furnace, and the temperature display instrument 16 can display the temperature in the furnace, which is very convenient.

[0025] The waste heat recovery system starts the exhaust fan 22, and the high-temperature flue gas generated by the combustion is transported to the drying stage through the exhaust duct via the exhaust fan 22, so that the heat recycling is realized. In this way, the electric heating tube 5 in the drying box can be turned off to save energy.

[0026] Working principle:

[0027] The fuel is placed in the drying box 1 for drying, and the electric heating tube 5 is turned on as needed and the number of times to be turned on is selected. If it is relatively dry, the drying stage is omitted and the fuel is directly sent to the crusher 11 through the conveying system with the conveyor belt 9. After being crushed by the crusher 11, the fuel can be burned more fully and the combustion efficiency is increased. The fuel enters the combustion zone and ignites the burner 14 to make the fuel burn. At the same time, the smoke exhaust fan 22 is turned on to transport the smoke heat to the drying stage through the pipeline, forming a cycle to achieve efficient energy utilization.

Claims

1. A highly efficient energy-saving device using biomass as fuel, characterized in that: It includes a drying system, a conveying system, a combustion system and a waste heat recovery system. One end of the conveying system is arranged in the drying system. After the fuel is dried by the drying system, it is delivered by the conveying system. The other end of the conveying system is connected to the combustion system to burn the fuel. A waste heat recovery system is arranged between the combustion system and the drying system to transport the heat of the combustion system to the drying system for reuse. The drying system comprises a drying box (1), the interior of the drying box (1) being separated into an upper layer and a lower layer by an isolation plate (7), the upper layer and the lower layer being provided with doors that can be opened independently, a plurality of electric heating pipes (5) being arranged on the top of the upper layer, and the lower layer being connected to a waste heat recovery system; The conveying system comprises a conveyor belt shell (18), a conveyor belt (9) and a curtain (19); an opening for installing the conveyor belt (9) at the same height is provided on the right side of the upper layer of the drying box (1); one end of the conveyor belt shell (18) is butted against the right side opening of the upper layer of the drying box (1); the other end is provided with a curtain (19); one end of the conveyor belt (9) is provided inside the right side opening of the upper layer of the drying box (1); the other end passes through the conveyor belt shell (18) and extends to the position of the combustion system; The combustion system comprises a crusher (11) and a combustion furnace (15), wherein the crusher (11) receives fuel from the conveying system, and the crushed fuel is sent to the combustion furnace (15) for combustion; the combustion furnace is divided into three layers, wherein an ash collector is placed on the lower layer for collecting waste residue after combustion, the middle layer is a fuel area, a burner (14) is arranged at the bottom of the middle layer for igniting the fuel, the lower layer and the middle layer are separated by a porous fence (13), and the upper layer is used to place things that need to be heated according to actual needs; The combustion furnace (15) is made of refractory material, and an accident handling hole (21) and an observation hole (20) are arranged on the combustion furnace (15). A thermocouple is arranged inside the combustion furnace (15), and a temperature meter (16) is installed on the surface of the combustion furnace (15) to display the temperature inside the furnace; The waste heat recovery system comprises a smoke exhaust fan (22) and a conveying pipeline; a waste heat exhaust hole (17) is provided in the combustion zone of the combustion system, and a waste heat inlet hole (6) is provided in the lower layer of the drying box (1) of the drying system; the waste heat exhaust hole (17) and the waste heat inlet hole (6) are connected through a conveying pipeline, and the high-temperature smoke of the combustion system is conveyed to the drying system through the smoke exhaust fan (22).

2. The high-efficiency energy-saving device using biomass as fuel according to claim 1, characterized in that: A conveyor belt accident handling hole (8) is provided on the top of the conveyor belt housing (18).

3. The high-efficiency energy-saving device using biomass as fuel according to claim 1, characterized in that: The surface of the drying box (1) is provided with an electric heating tube forced shut-off button (2), an electric heating tube shut-off button (3) and an electric heating tube shut-off button (4).

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