TWI762399B - Environmentally friendly biomass fuel combustion furnace - Google Patents

Abstract

The present invention relates to an environmentally friendly biomass fuel combustion furnace, comprising: a furnace body is divided into a preheating zone and a heating zone, a material blanking seat is provided with a material holding area, and the material holding area drives two door plates through a rotating motor Actively open or close; a combustion unit is provided with a nozzle corresponding to the material holding area to spray a liquid fuel and ignites, the combustion unit is provided with a temperature detector to detect that the temperature in the material holding area reaches a combustion standard value, Then the rotating motor is controlled to drive the two door panels to open and move; the temperature detector controls a conveyor belt to move a distance at the same time; a hot water coil passes through the preheating zone and the heating zone. In this way, biomass fuel can be burned quickly and uninterruptedly.

Description

Environmentally friendly biomass fuel combustion furnace

The present invention relates to a furnace structure that can rapidly burn biomass fuel without interruption.

In recent years, due to the problems of fossil energy, air pollution and the aging of incinerators, a large amount of waste plastics cannot be effectively decomposed, and a large amount of dioxins are produced in the face of illegal burning, which affects public health. Using waste to make reusable energy, waste-derived fuel RDF (Refuse Derived Fuel), scholars have researched waste oil sludge, coal powder, wood chips (or rice straw) and PE and other wastes to make RDF-5 Fuel particles make a great contribution to the removal of waste. However, there are two ways to deal with waste plastics: gasifier and chemical dechlorination. The cost of gasifier construction and post-processing is high. The chemical dechlorination method can be applied to general combustion furnaces. It is made of biomass fuel particles after mixing the formula with plastic at atmospheric pressure. During combustion, the formula reacts with the chloride ions in the plastic to generate Stable compound, retained in the waste residue, can greatly reduce the dioxin in the exhaust gas. This new generation of recycled plastic environmentally friendly particles (with a calorific value of about 6000~7000kcal/kg) can be used in fluidized bed boilers (approved by the Industrial Bureau of the Ministry of Economic Affairs in September 2020) to replace coal fuels generated by steam and electricity, which can reduce fossil fuels energy consumption, while reducing air pollution.

For example, the new patent No. M590068 "Organic Waste Gas Concentration Regenerative Combustion Reflux Cooling System" announced on February 1, 2019 of the Republic of China discloses that the regenerative gas is recovered or discharged through different paths, and the regenerative combustion The exhaust gas of the furnace undergoes heat exchange through the cooler, and is sent to the exhaust gas intake pipe after cooling, so that the combusted gas enters the adsorption area of the adsorption runner without passing through the chimney for discharge. , so that the emission of the chimney is reduced, and the treatment efficiency of organic waste gas is improved. At the same time, the regenerative gas in the heating chamber of the regenerative combustion furnace is provided to the heater for use.

However, because biomass fuel is not easy to ignite, it will affect the efficiency of combustion and heating, so it is not ideal for use.

For this reason, in view of the above-mentioned disadvantages of the current combustion furnace for burning biomass fuel. Therefore, the present invention provides an environmentally friendly biomass fuel combustion furnace, which includes: a furnace body, the interior of which is divided into a preheating zone and a heating zone, and a connecting channel is connected between the preheating zone and the heating zone, The furnace body is respectively provided with an exhaust passage, a feeding port, an air inlet and an outlet, the exhaust passage is connected to the preheating zone, and the feeding port, the air inlet and the outlet are connected to the heating area; a blanking seat, which is arranged in the heating area and is located below the feeding port, a material holding area is arranged inside the blanking seat, and the material holding area drives the two door panels through a rotating motor Actively open or close; a combustion unit is arranged on the blanking seat, the combustion unit is provided with a nozzle corresponding to the material holding area to spray a liquid fuel and ignites it, and the combustion unit is provided with a temperature detector , the temperature detector is a signal connected to the rotating motor, and detects the temperature in the holding area, so that when the temperature in the holding area reaches a combustion standard value, it will control the rotating motor to drive the two The door panel is movably opened; a conveying unit is arranged at the lower position of the material holding area, a conveying belt in the form of a mesh that rotates intermittently is arranged on the conveying unit, and the conveying unit is signally connected to the temperature detector , so as to control the conveyor belt to move a distance when the temperature detector detects that the temperature in the storage area reaches the combustion standard value; a hot water coil is arranged inside the furnace body, and passes through the The preheating zone and the heating zone.

The above-mentioned preheating zone is located above the furnace body, and the heating zone is located below the furnace body.

The diameter of a first gas inlet end at one end of the connecting channel is smaller than that of a first gas outlet end at the other end, the first gas inlet end communicates with the heating zone, and the first gas outlet end communicates with the preheating zone.

A blower is arranged in the above-mentioned connecting channel, and a gas detector is arranged in the connecting channel. The gas detector is connected to the blower by a signal, and detects the carbon dioxide in the exhaust gas passing through the connecting channel. The concentration of carbon and nitrogen oxides, thereby controlling the blower to start when the concentration of the carbon dioxide or the nitrogen oxides exceeds a gas standard.

The diameter of a second gas inlet end at one end of the exhaust passage is smaller than that of a second gas outlet end at the other end, and the second gas inlet end communicates with the heating zone.

A drawer-type tray is set in the above-mentioned outlet for taking out or placing it at the bottom of the heating zone.

The above is further provided with a feeding unit, the feeding unit is arranged in the feeding port, and the feeding unit drives a feeding screw to rotate intermittently through a power motor.

A vibrating feeding table is provided at the end of the above-mentioned feeding screw, and the blanking seat is located below the vibrating feeding table.

The above is further provided with an air intake unit, the air intake unit is arranged in the heating zone and connected to the air inlet, and the bottom of the air intake unit is provided with a plurality of ventilation holes.

A water inlet end of one end of the above-mentioned hot water coil is located outside the preheating zone, and a water outlet end of the other end is located outside the heating zone.

The above technical features have the following advantages:

1. By coordinating the setting of the blanking seat and the combustion unit, the biomass fuel can be pre-burned first to help it burn quickly, and then by the setting of the conveying unit, the pre-burned biomass fuel can continue. Normal combustion, in order to efficiently process biomass fuels that are difficult to ignite and burn.

2 Through the setting of the connecting channel, the path of intake and exhaust is lengthened, and the resistance of the channel is also increased to improve the heat exchange efficiency and ash collection.

3. The air flow required for complete combustion can be ensured by the different upper and lower positions and diameters of the intake port and the exhaust port.

4. With the exhaust gas detection of the blower and the gas detector, the flow rate of the air entering can be adjusted to help the biomass fuel burn.

5. Using the feeding unit, the biomass fuel can be moved intermittently, and then the biomass fuel can be burned in batches, so that the biomass fuel can be continuously burned without interruption.

6. A mesh conveyor belt that can be rotated intermittently is attached to the conveying unit to help the biomass fuel burn into ashes, which can be dropped into the tray by gravity through the conveyor belt to be collected and then poured. drop processing.

7. And use the hot water coil to pass through the preheating zone and the heating zone in turn, which can improve the efficiency of heat exchange and accelerate the formation of hot water for use.

1: Furnace body

11: Preheating zone

12: Heating zone

13: even channel

131: The first air inlet

132: The first gas outlet

133: Gas Detector

14: Blower

15: Exhaust channel

151: Second air inlet

152: Second air outlet

16: Feeding port

17: Air intake

18: Export

181: plate

2: Feeding unit

21: Power Motor

22: Feeding screw

23: Vibration feeding table

3: Blanking seat

31: Containment area

32: Turn the motor

33: Door panel

4: Combustion unit

41: Nozzle

42: Temperature detector

5: Conveying unit

51: Conveyor belt

6: Air intake unit

61: ventilation holes

7: Hot water coil

71: Water entry

72: Water outlet

A: Biofuel

[Figure 1] is a three-dimensional appearance view of an embodiment of the present invention.

[The second figure] is a combined cross-sectional view of an embodiment of the present invention.

[Figure 3] is a schematic diagram of the structure of the blanking seat and the conveying unit according to the embodiment of the present invention.

[FIG. 4] is a schematic diagram of the structure of the air intake unit according to the embodiment of the present invention.

[Fig. 5] is a schematic diagram of feeding biomass fuel for ignition and combustion in the feeding unit according to the embodiment of the present invention.

[Fig. 6] is a schematic diagram of the blanking seat opening the door plate to make the biomass fuel fall onto the conveyor belt according to the embodiment of the present invention.

[Fig. 7] is a schematic diagram of the blanking seat closing the door plate for dropping the biomass fuel again according to the embodiment of the present invention.

[Figure 8] is a schematic diagram of the conveyor belt conveying biomass fuel according to the embodiment of the present invention.

Please refer to the first, second and third figures. The embodiment of the present invention includes: a furnace body 1, a feeding unit 2, a blanking seat 3, a combustion unit 4, a conveying unit 5, and an air intake unit 6 and hot water coil 7, where: The furnace body 1 is divided into a preheating zone 11 and a heating zone 12 by upper and lower partitions. A connecting channel 13 is connected between the preheating zone 11 located above and the heating zone 12 located below, and a first gas inlet end 131 at one end of the connecting channel 13 has a diameter smaller than a first gas outlet end at the other end. The first gas inlet end 131 communicates with the heating zone 12 , and the first gas outlet end 132 communicates with the preheating zone 11 . In addition, a blower 14 is arranged in the connecting channel 13, and a gas detector 133 is arranged in the connecting channel 13. The gas detector 133 is connected to the blower 14 by a signal and detects the exhaust gas passing through the connecting channel 13. The concentration of carbon dioxide and nitrogen oxides in the carbon dioxide gas, so that when the concentration of the carbon dioxide or the nitrogen oxides exceeds a gas standard, the blower 14 is controlled to start. The furnace body 1 is respectively provided with an exhaust passage 15 , a material inlet 16 , an air inlet 17 and an outlet 18 . The diameter of a second inlet end 151 at one end of the exhaust passage 15 is smaller than that of a second outlet end 152 at the other end, and the second inlet end 151 of the exhaust passage 15 communicates with the heating zone 12. The inlet 16 , the air inlet 17 and the outlet 18 communicate with the heating zone 12 . In addition, a drawer-type tray 181 is set in the outlet 18 so that it can be taken out or placed at the bottom of the heating zone 12 .

The feeding unit 2 is arranged in the feeding port 16 . The feeding unit 2 can drive a feeding screw 22 to rotate intermittently through a power motor 21 , and a vibrating feeding table 23 is provided at the end of the feeding screw 22 .

The blanking seat 3 is arranged in the heating zone 12 and is located below the vibrating feeding table 23 . The blanking seat 3 (as shown in the third figure) is internally provided with a material receiving area 31, and the bottom of the material receiving area 31 drives the two door panels 33 to open or close through a rotating motor 32. The two door panels 33 are arranged in the form of For the mesh structure.

The combustion unit 4 is arranged on the blanking seat 3 . The combustion unit 4 (as shown in the third figure) is provided with a nozzle 41 corresponding to the material holding area 31 of the blanking seat 3 to spray a liquid fuel, which is alcohol, gasoline or diesel, to be ignited. And the combustion unit 4 is provided with a temperature detector 42, the temperature detector 42 is connected to the rotating motor 32 by signal, and detects the temperature in the material holding area 31, thereby When the temperature in the material holding area 31 reaches a combustion standard value, the rotating motor 32 is controlled to drive the two door panels 33 to open.

The conveying unit 5 is arranged at a position below the material holding area 31 of the blanking seat 3 , and a conveying belt 51 in the form of a mesh that can rotate intermittently is fixed on the conveying unit 5 . The conveying unit 5 is signal-connected to the temperature detector 42, so that when the temperature detector 42 detects that the temperature in the material holding area 31 reaches the combustion standard value, the conveyor belt 51 is controlled to move an appropriate distance.

The air intake unit 6 is disposed in the heating zone 12 and connected to the air inlet 17 . In addition, the air intake unit 6 (as shown in the fourth figure) is configured in a tubular shape, and has a plurality of ventilation holes 61 at the bottom thereof.

The hot water coil 7 is arranged inside the furnace body 1 and passes through the preheating zone 11 and the heating zone 12 . A water inlet end 71 at one end of the hot water coil 7 is located outside the preheating zone 11 , and a water outlet end 72 at the other end is located outside the heating zone 12 .

When in use, as shown in the first and fifth figures, a biomass fuel A is placed through the feeding port 16, and the feeding unit 2 uses the power motor 21 to drive the feeding screw 22 to rotate to push The biomass fuel A moves forward and falls into the vibrating feeding table 23 , and the biomass fuel A can evenly drop into the material holding area 31 of the blanking seat 3 by means of vibration. Then, the nozzle 41 of the combustion unit 4 sprays the liquid fuel to the biomass fuel A in the material holding area 31, and then ignites, so that the biomass fuel A can be ignited to help the biomass fuel A preheat. burn. At the same time, the air outside the furnace body 1 can enter the air intake unit 6 through the air inlet 17, and then enter the heating zone 12 through the ventilation holes 61 to help the biomass fuel A pre-combustion. The exhaust gas and heat energy generated by the combustion of the biomass fuel A can be input into the preheating zone 11 through the connecting passage 13 , and the exhaust gas is discharged out of the furnace body 1 through the exhaust passage 15 .

As shown in the sixth figure, when the temperature detector 42 detects the combustion temperature of the biomass fuel A inside the material holding area 31 and exceeds the combustion standard value, it will control the temperature at the bottom of the material holding area 31 . The rotary motor 32 drives the two door panels 33 to open, so that the biomass fuel A in the material holding area 31 can fall onto the conveyor belt 51 of the conveying unit 5 , and then the biomass fuel A is transported on the conveyor belt 51 Continue to burn normally. When the biomass fuel A is burned, the heat energy can be exchanged upward for the hot water coil 7 passing through the preheating zone 11 and the heating zone 12 , so that the water inlet end 71 of the hot water coil 7 The incoming cold water can be converted into hot water through heat exchange, and then discharged from the water outlet 72 for use. After the biomass fuel A is burnt into ashes, it can be dropped into the tray 181 through the mesh-shaped conveyor belt 51 to be collected, the drawer-type tray 181 can be pulled out through the outlet 18, and then the tray 181 can be collected. Dispose of after disposal.

As shown in Figure 7, then the rotating motor 32 drives the two door panels 33 to move and close, and at the same time drives the feeding screw 22 to rotate through the power motor 21 to push the biomass fuel A forward and falls into the vibrating feed The stage 23 uses the vibration method to make the biomass fuel A evenly fall into the inside of the material holding area 31 of the blanking seat 3 . Then, the two door plates 33 are used to form a mesh structure, so that the flame of the biomass fuel A still burning on the conveyor belt 51 can pass through the two door plates 33 to ignite the biomass in the material holding area 31 fuel A, so that the biomass fuel A can be pre-burned.

As shown in Figure 8, when the temperature detector 42 detects that the combustion temperature of the biomass fuel A in the material holding area 31 exceeds the combustion standard value, it will control the The conveyor belt 51 moves an appropriate distance to drive the biomass fuel A that continues to burn on the conveyor belt 51 to leave the position below the blanking seat 3 . At the same time, the rotary motor 32 at the bottom of the material holding area 31 will be controlled again to drive the two door panels 33 to open, so that the biomass fuel A in the material holding area 31 can fall onto the conveyor belt 51 of the conveying unit 5 , The biomass fuel A continues to burn on the conveyor belt 51 . In this way, the biomass fuel A can be pre-combusted and continue normal combustion through the above-mentioned cyclic operation.

As shown in the fourth figure, when the gas detector 133 in the connecting channel 13 detects the concentration of carbon dioxide and nitrogen oxides in the exhaust gas passing through the connecting channel 13, when it exceeds the gas standard, it will control the The blower 14 is activated to enhance that the air outside the furnace body 1 can quickly enter the air intake unit 6 through the air inlet 17, and then enter the preheating zone 11 through the ventilation holes 61 to help the biomass Fuel A burns. Until the concentration of carbon dioxide and nitrogen oxides in the exhaust gas is lower than the gas standard, the drum will be controlled. The fan 14 stops rotating. In addition, the waste gas produced by the combustion of the biomass fuel A can be input into the heating zone 12 through the connecting passage 13 , and then discharged out of the furnace body 1 through the exhaust passage 15 .

In this way, through the cooperation of the blanking seat 3 and the combustion unit 4, the biomass fuel A can be pre-burned first, and then the pre-burned biomass fuel A can be pre-burned by the setting of the conveying unit 5. Continue to burn normally to help the biomass fuel A to ignite and burn quickly, so as to efficiently process the biomass fuel A that is difficult to ignite and burn. In order to improve the heat exchange efficiency and the ash collection, the arrangement of the connecting channel 13 can lengthen the paths of intake and exhaust, and at the same time improve the resistance of the channel. Moreover, the air flow required for complete combustion of the biomass fuel A can be ensured by the upper and lower positions and diameters of the exhaust passage 15 and the air inlet 17 . And through the design of the blower 14 and the exhaust gas detection of the gas detector 133, the flow rate of the air entering can be adjusted. In addition, the feeding unit 2 can be used for intermittent driving, and then the biomass fuel A can be burned in batches, so that the biomass fuel A can be continuously burned without interruption. The conveying unit 5 is also provided with a mesh-like conveying belt 51 that can rotate intermittently, so that after the biomass fuel A is burnt into ashes, it can fall into the tray through the conveying belt 51 by gravity. 181 are collected and then discarded for disposal. The hot water coil 7 can pass through the preheating zone 11 and the heating zone 12 in sequence, which can improve the efficiency of heat exchange and accelerate the formation of hot water for use.

Based on the descriptions of the above embodiments, one can fully understand the operation, use and effects of the present invention, but the above-mentioned embodiments are only preferred embodiments of the present invention, which should not limit the implementation of the present invention. Scope, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention, all fall within the scope of the present invention.

1: Furnace body

11: Preheating zone

12: Heating zone

13: even channel

131: The first air inlet

132: The first gas outlet

133: Gas Detector

14: Blower

15: Exhaust channel

151: Second air inlet

152: Second air outlet

16: Feeding port

17: Air intake

18: Export

181: plate

2: Feeding unit

21: Power Motor

22: Feeding screw

23: Vibration feeding table

3: Blanking seat

31: Containment area

32: Turn the motor

33: Door panel

4: Combustion unit

41: Nozzle

42: Temperature detector

5: Conveying unit

51: Conveyor belt

6: Air intake unit

61: ventilation holes

7: Hot water coil

71: Water entry

72: Water outlet

Claims (10)

An environmentally friendly biomass fuel combustion furnace, comprising: a furnace body, the interior is divided into a preheating zone and a heating zone, a connecting channel is connected between the preheating zone and the heating zone, and the furnace body is respectively There is an exhaust passage, a feeding port, an air inlet and an outlet, the exhaust passage is connected to the preheating zone, and the feeding port, the air inlet and the outlet are connected to the heating zone; a A blanking seat, which is arranged in the heating zone and below the feeding port, is provided with a material accommodating area inside the blanking seat, and the material accommodating area drives the two door panels to open or close through a rotating motor. ; A combustion unit is arranged on the blanking seat, the combustion unit is provided with a nozzle corresponding to the material holding area to eject a liquid fuel and ignites it, and the combustion unit is provided with a temperature detector, the temperature detection The signal of the detector is connected to the rotating motor, and detects the temperature in the material holding area, so that when the temperature in the material holding area reaches a combustion standard value, the rotating motor is controlled to drive the two door panels to move open; A conveying unit is arranged at the lower position of the material holding area. A conveying belt in the form of a mesh that rotates intermittently is arranged on the conveying unit. When the temperature detector detects that the temperature in the material holding area reaches the combustion standard value, it controls the conveyor belt to move a distance; a hot water coil is installed inside the furnace body, and passes through the preheating area and the heating zone. The environment-friendly biomass fuel combustion furnace according to claim 1, wherein the preheating zone is located above the furnace body, and the heating zone is located below the furnace body. The environment-friendly biomass fuel burner according to claim 1, wherein the diameter of a first gas inlet end at one end of the connecting channel is smaller than the diameter of a first gas outlet end at the other end, and the first gas inlet end communicates with the heating zone , the first gas outlet is connected to the preheating zone. The environment-friendly biomass fuel combustion furnace according to claim 1, wherein a blower is arranged in the connecting channel, a gas detector is arranged in the connecting channel, and the gas detector is connected to the signal The blower detects the concentration of carbon dioxide and nitrogen oxides in the exhaust gas passing through the connecting channel, so as to control the blower to start when the concentration of the carbon dioxide or the nitrogen oxide exceeds a gas standard. The environment-friendly biomass fuel burner according to claim 1, wherein a diameter of a second gas inlet end at one end of the exhaust passage is smaller than a diameter of a second gas outlet end at the other end, and the second gas inlet end is connected to the heating zone. The environment-friendly biomass fuel combustion furnace according to claim 1, wherein a drawer-type tray is set in the outlet for taking out or placing it at the bottom of the heating zone. The environmentally friendly biomass fuel combustion furnace according to claim 1, further, a feeding unit is provided, the feeding unit is arranged in the feeding port, and the feeding unit is driven by a power motor intermittently. The feed screw rotates. The environment-friendly biomass fuel combustion furnace according to claim 7, wherein a vibrating feeding table is provided at the end of the feeding screw, and the feeding seat is located below the vibrating feeding table. As claimed in claim 1, an environmentally friendly biomass fuel combustion furnace is further provided with an air intake unit, the air intake unit is arranged in the heating zone and connected to the air inlet, and the bottom of the air intake unit is provided with an air intake unit. Plural ventilation holes. The environmentally friendly biomass fuel burner according to claim 1, wherein a water inlet end of one end of the hot water coil is located outside the preheating zone, and a water outlet end of the other end is located outside the heating zone.

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