TW202307374A - Combustion furnace for environmentally friendly biomass fuel which can burn the biomass fuel rapidly without interruption - Google Patents

Abstract

The present invention relates to a combustion furnace for environmentally friendly biomass fuel, which comprises a furnace body divided into a preheating zone and a heating zone; a blanking seat having a material storage area at the interior thereof, wherein the material storage area drives two door panels to open or close through a rotating motor; a combustion unit provided with a nozzle corresponding to the material storage area to spray a liquid fuel and ignite it, wherein the combustion unit is equipped with a temperature detector for detecting the temperature in the material storage area and controlling the rotating motor to drive the two door panels to open when the temperature in the material storage area reaches a combustion standard value, and the temperature detector simultaneously controls a conveyor belt to move a distance; and a hot water coil passing through the preheating zone and the heating zone. Thus, the biomass fuel can be burned rapidly without interruption.

Description

Environmentally friendly biomass fuel combustion furnace

The present invention relates to a combustion furnace structure capable of rapidly burning biomass fuel without interruption.

In recent years, due to fossil energy, air pollution problems, and the age of incinerators, a large amount of waste plastics cannot be effectively removed, and a large amount of dioxins are produced by illegal combustion, which affects public health. Using waste to make reusable energy, waste-derived fuel RDF (Refuse Derived Fuel), scholars have studied waste oil sludge, coal powder, wood chips (or rice straw) and PE to produce RDF-5 Fuel pellets make a great contribution to the degassing of waste. However, there are two ways to deal with waste plastics: gasification furnace and chemical dechlorination. The cost of gasification furnace construction and post-treatment is high. The chemical dechlorination method can be applied to general combustion furnaces. It is made of biofuel particles after mixing the formula with plastic at normal pressure. The formula reacts with chloride ions in the plastic during combustion A stable compound is produced and left in the waste residue, which can greatly reduce the dioxin in the exhaust gas. This new generation of recycled plastic environmental protection particles (with a calorific value of about 6000~7000kcal/kg) can already be applied to fluidized bed boilers (approved by the Industrial Bureau of the Ministry of Economic Affairs in September 2020) to replace coal fuel in steam and electricity generation, 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 disclosed that the heat storage gas is recovered or discharged through different paths, and the heat storage gas is burned The exhaust gas of the furnace passes through the cooler for heat exchange, and after being cooled, it is transported to the exhaust gas inlet pipeline, so that the combusted gas enters the adsorption area of the adsorption runner instead of being discharged through the chimney , so that the emission of the chimney is reduced, and the treatment efficiency of organic waste gas is improved. At the same time, the heat storage gas in the heating chamber of the heat storage combustion furnace is provided to the heater for use.

However, due to the non-ignitable characteristics of biomass fuel, which will affect the efficiency of combustion and heating, it is not ideal in use.

Therefore, in view of the above-mentioned shortcoming that the burner that is used for burning biomass fuel has above-mentioned at present. Therefore, the present invention provides a combustion furnace for environmentally friendly biomass fuels, which includes: a furnace body, the interior 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 channel, a material inlet, an air inlet and an outlet, the exhaust channel is connected to the preheating zone, and the material inlet, the air inlet and the outlet are connected to the Heating zone; a blanking seat, which is set in the heating zone and located below the material inlet, a material holding area is provided 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 set 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, and the combustion unit is provided with a temperature detector , the temperature detector is signal connected to the rotating motor, and detects the temperature in the material storage area, so that when the temperature in the material storage area reaches a combustion standard value, it will control the rotation motor to drive the two The door panel is movable and opened; a conveying unit is arranged at the lower position of the material holding area, and a mesh-shaped conveying belt that rotates intermittently is arranged on the conveying unit, and the conveying unit is signal-connected to the temperature detector, In order to control the conveyor belt to move a distance when the temperature detector detects that the temperature in the material storage area reaches the combustion standard value; a hot water coil is arranged inside the furnace body, and passes through the preset hot zone and the heated zone.

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

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

A blower is installed in the above-mentioned connecting channel, and a gas detector is installed in the connecting channel, and the gas detector is signal-connected to the blower, and detects the carbon dioxide and nitrogen oxides in the exhaust gas passing through the connecting channel. concentration, so as to control the start of the blower when the concentration of the carbon dioxide or the nitrogen oxide exceeds a gas standard.

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

A drawer-type serving tray is provided in the above-mentioned outlet for taking out or putting in 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 driving screw to rotate intermittently through a power motor.

A vibrating feeding table is arranged at the end of the above-mentioned material shifting screw, and the blanking seat is located under the vibrating feeding table.

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

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

The above technical features have the following advantages:

1. With the combination of the blanking seat and the combustion unit, the biomass fuel can be pre-combusted first to help burn quickly, and then the pre-combusted biomass fuel can be continued through the setting of the delivery unit. Normal combustion, in order to efficiently process biofuels 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 at the same time, so as to improve the heat exchange efficiency and ash collection.

3. Due to the difference in the upper and lower positions and diameters of the air inlet and the exhaust port, the air flow required for complete combustion can be ensured.

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

5. The feed unit can intermittently drive the biomass fuel to move, and then burn the biomass fuel in batches, so that the biomass fuel can continue to burn without interruption.

6. The conveying unit is equipped with a mesh conveyor belt that can be rotated intermittently to help the biomass fuel burn into ashes, and then use gravity to fall into the pan through the conveyor belt to be collected and then dumped. Dispose of it.

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

Please refer to the first figure, the second figure and the third figure, 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, wherein:

The furnace body 1 is divided into a preheating zone 11 and a heating zone 12 by upper and lower partitions. A connecting passage 13 is connected between the preheating zone 11 located above and the heating zone 12 located below, and the diameter of a first gas inlet port 131 at one end of the communicating channel 13 is smaller than that of a first gas outlet port at the other end. 132, the first gas inlet port 131 communicates with the preheating zone 11, and the first gas outlet port 132 communicates with the heating zone 12. In addition, a blower 14 is arranged in the connecting passage 13, and a gas detector 133 is arranged in the connecting passage 13. The gas detector 133 is signal-connected to the blower 14, and detects the waste gas passing through the connecting passage 13. The concentration of carbon dioxide and nitrogen oxides in the gas will control the blower 14 to start when the concentration of the carbon dioxide or the nitrogen oxides exceeds a gas standard. The furnace body 1 is respectively provided with an exhaust channel 15 , a material inlet 16 , an air inlet 17 and an outlet 18 . The aperture of a second air inlet 151 at one end of the exhaust passage 15 is smaller than the aperture of a second air outlet 152 at the other end, and this second air inlet 151 of the exhaust passage 15 is connected to the heating zone 12. The material inlet 16 , the gas inlet 17 and the outlet 18 are connected to the heating zone 12 . In addition, a drawer-type serving tray 181 is provided in the outlet 18 for taking out or putting in the bottom of the heating zone 12 .

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

The blanking seat 3 is arranged in the heating zone 12 and is located below the vibrating feeding table 23 . This blanking seat 3 (as shown in the third figure) is provided with a material holding area 31 inside, and the bottom of the material holding 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 network structure.

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

The conveying unit 5 is arranged at the position below the material receiving area 31 of the blanking seat 3 , and the conveying unit 5 is provided with a mesh-shaped conveying belt 51 which can rotate intermittently. The conveying unit 5 is signal-connected to the temperature detector 42, so as to control the conveyor belt 51 to move an appropriate distance when the temperature detector 42 detects that the temperature in the storage area 31 reaches the combustion standard value.

The air intake unit 6 is arranged in the heating zone 12 and connected to the air intake 17 . The air intake unit 6 [as shown in the fourth figure] is set to be a tube, and a plurality of ventilation holes 61 are provided at the bottom.

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 71 at one end of the hot water coil 7 is located outside the preheating zone 11 , and a water outlet 72 at the other end is located outside the heating zone 12 .

When in use, as shown in the first figure and the fifth figure, a biomass fuel A is inserted through the feed port 16, and the power motor 21 is used to drive the screw 22 to rotate through the feed unit 2 to push The biomass fuel A advances and falls into the vibrating feeding platform 23 , and the biomass fuel A can evenly fall into the material receiving area 31 of the dropping 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 the biomass fuel A to help the biomass fuel A to pre-heat. 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 air holes 61, so as to help the biomass fuel A to pre-combust. The exhaust gas and heat energy produced by the combustion of the biomass fuel A can be input into the preheating zone 11 through the connecting channel 13 , and the exhaust gas is discharged out of the furnace body 1 through the exhaust channel 15 .

As shown in the sixth figure, when the temperature detector 42 detects that the combustion temperature of the biomass fuel A inside the container area 31 exceeds the combustion standard value, the temperature at the bottom of the container area 31 will be controlled. The rotating motor 32 drives the two door panels 33 to move open, so that the biomass fuel A inside the material storage area 31 can fall onto the conveyor belt 51 of the conveying unit 5, and then the biomass fuel A is on the conveyor belt 51 Continue to burn normally. The heat energy generated when the biomass fuel A burns can upwardly exchange heat with 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 turned into hot water through heat exchange, and then discharged from the water outlet 72 for use. After the biomass fuel A is burned into ashes, it can be collected by falling into the tray 181 through the mesh conveyor belt 51, and the drawer-type tray 181 can be pulled out through the outlet 18, and then Throw it away and dispose of it.

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

As shown in the eighth figure, when the temperature detector 42 detects that the combustion temperature of the biomass fuel A inside the storage area 31 exceeds the combustion standard value, the delivery unit 5 will be controlled. 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 lower position of the blanking seat 3 . At the same time, the rotating motor 32 at the bottom of the material holding area 31 will be controlled again to drive the two door panels 33 to move open, so that the biomass fuel A inside the material holding area 31 can fall onto the conveyor belt 51 of the conveying unit 5, The biomass fuel A is continuously burned on the conveyor belt 51 . In this way, through the above-mentioned cyclic operation, the biomass fuel A can be pre-combusted and continue to burn normally.

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 the gas standard is exceeded, the gas will be controlled. The air blower 14 starts to strengthen the air outside the furnace body 1 to quickly enter the air intake unit 6 through the air inlet 17, and then enter the preheating zone 11 through the air 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 air blower 14 will be controlled to stop rotating. In addition, the exhaust gas generated after the biomass fuel A is burned can be input into the heating zone 12 through the connecting channel 13 , and then discharged out of the furnace body 1 through the exhaust channel 15 .

In this way, through the cooperative arrangement of the blanking seat 3 and the combustion unit 4, the biomass fuel A can be pre-combusted first, and then the pre-combusted biomass fuel A can be burnt through the setting of the delivery unit 5 Continue normal combustion 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 heat exchange efficiency and ashes collection, the connecting channel 13 is provided to lengthen the path of intake and exhaust, and simultaneously increase the resistance of the channel. Moreover, the air flow required for the 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 by the design of the blower 14, in conjunction with the exhaust gas detection of the gas detector 133, the flow rate of the air entering can be adjusted. The feed unit 2 can be used to drive intermittently, and then burn the biomass fuel A in batches, so that the biomass fuel A can continue to burn without interruption. In addition, the delivery unit 5 is provided with a mesh-like conveyor belt 51 that can be rotated intermittently to help the biomass fuel A burn into ashes, and then use gravity to fall into the tray through the conveyor belt 51 After being collected within 181 days, it will be discarded for disposal. And 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 description of the above-mentioned embodiments, it is possible to fully understand the operation of the present invention, use and the effect that the present invention produces, but the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the implementation of the present invention. The scope, that is, the simple equivalent changes and modifications made according to the patent scope of the present invention and the content 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: Connection channel 131: The first air inlet 132: The first outlet port 133: Gas detector 14: Blower 15: exhaust channel 151: The second air inlet 152: The second outlet port 16: Feed port 17: air inlet 18: Export 181: pan 2: Feed unit 21: Power motor 22: Dial screw 23: Vibration feeding table 3: blanking seat 31: Containing material area 32: Turn the motor 33: door panel 4: Combustion unit 41: Nozzle 42:Temperature detector 5: Conveyor unit 51: conveyor belt 6: Air intake unit 61: ventilation hole 7: Hot water coil 71: water inlet 72:Water outlet A: Biomass fuel

[The first figure] is a three-dimensional appearance view of an embodiment of the present invention.

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

[The third figure] is a schematic diagram of the structure of the blanking seat and the conveying unit of the embodiment of the present invention.

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

[Figure 5] is a schematic diagram of the feed unit conveying biomass fuel for ignition and combustion according to the embodiment of the present invention.

[Figure 6] is a schematic diagram of opening the door panel of the blanking seat according to the embodiment of the present invention so that the biomass fuel falls onto the conveyor belt.

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

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

1: furnace body

11: Preheating zone

12: Heating zone

13: Connection channel

131: The first air inlet

132: The first outlet port

133: Gas detector

14: Blower

15: exhaust channel

151: The second air inlet

152: The second outlet port

16: Feed port

17: air inlet

18: Export

181: pan

2: Feed unit

21: Power motor

22: Dial screw

23: Vibration feeding table

3: blanking seat

31: Containing material area

32: Turn the motor

33: door panel

4: Combustion unit

41: Nozzle

42:Temperature detector

5: Conveyor unit

51: conveyor belt

6: Air intake unit

61: ventilation hole

7: Hot water coil

71: water inlet

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, and a connecting channel is connected between the preheating zone and the heating zone, and the furnace body is respectively provided with an exhaust channel, a material inlet, a an air inlet and an outlet, the exhaust channel is connected to the preheating zone, and the material inlet, the air inlet and the outlet are connected to the heating zone; A blanking seat, which is set in the heating area and located below the material inlet, a material storage area is provided inside the blanking seat, and the material storage area drives the two door panels to open or open through a rotating motor closure; A combustion unit is arranged on the blanking seat, and the combustion unit is provided with a nozzle corresponding to the storage area to spray a liquid fuel and ignites it, and the combustion unit is provided with a temperature detector, the temperature detection The signal of the device is connected to the rotating motor, and the temperature in the material holding area is detected, so that when the temperature in the material holding area reaches a combustion standard value, the rotating motor will be controlled to drive the two door panels to move open; A conveying unit is arranged at the lower position of the material holding area, and a mesh-like conveying belt that rotates intermittently is arranged on the conveying unit. The conveying unit is signal-connected to the temperature detector, so that the When the detector detects that the temperature in the material storage area reaches the combustion standard value, the conveyor belt is controlled to move a certain distance; A hot water coil is arranged inside the furnace body and passes through the preheating zone and the heating zone. The combustion furnace for environmentally friendly biomass fuels as described in Claim 1, wherein the preheating zone is located above the furnace body, and the heating zone is located below the furnace body. The burner of environmentally friendly biomass fuel as described in claim 1, wherein the diameter of a first gas inlet port at one end of the communication channel is smaller than the diameter of a first gas outlet port at the other end, and the first gas inlet port communicates with the preheating zone , the first gas outlet is connected to the heating zone. The burner of environmentally friendly biomass fuel as described in claim 1, wherein, a blower is arranged in the connecting passage, a gas detector is arranged in the connecting passage, and the gas detector is signal-connected to the blower, and Detecting the concentration of carbon dioxide and nitrogen oxide in the exhaust gas passing through the connecting channel, so as to control the start of the blower when the concentration of the carbon dioxide or the nitrogen oxide exceeds a gas standard. The burner of environmentally friendly biomass fuel as described in claim 1, wherein the diameter of a second air inlet at one end of the exhaust passage is smaller than the diameter of a second air outlet at the other end, and the second air inlet is connected to the heating zone. The combustion furnace for environmentally friendly biomass fuels as described in claim 1, wherein a drawer-type serving tray is provided in the outlet for taking out or putting in the bottom of the heating zone. The combustion furnace of environmentally friendly biomass fuel as described in claim 1 further has a feeding unit, the feeding unit is arranged in the feeding port, and the feeding unit is intermittently driven by a power motor. The feed screw rotates. The combustion furnace for environmentally friendly biomass fuels as described in claim 7, wherein a vibrating feeding table is provided at the end of the feeding screw, and the blanking seat is located below the vibrating feeding table. The combustion furnace of environmentally friendly biomass fuel as described in claim 1 further has an air intake unit, which is arranged in the heating zone and connected to the air inlet, and the bottom of the air intake unit is provided with Multiple ventilation holes. The burner of environmentally friendly biomass fuel as described in Claim 1, wherein a water inlet at one end of the hot water coil is located outside the preheating zone, and a water outlet at the other end is located outside the heating zone.

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