JPS603129B2 - High heat blast rice husk combustion furnace equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion furnace device that uses rice husk as fuel.

In recent years, due to the rise in oil prices, the fuel costs included in the production costs of greenhouse horticulture products have become a major burden.In order to stably supply greenhouse vegetables to the market, energy-saving alternatives to petroleum energy are needed. This heater is highly desired.

Taking the above points into consideration, the present invention has been developed to drop rice husk, which is agricultural waste, from an upper hopper into a furnace cylinder using a double-sealed cylinder, and to heat it at a high temperature and pressurize it from an air chamber provided on the outer periphery of the furnace cylinder. This is a combustion furnace that burns rice husk while blowing high-pressure hot air.The rice husk is heated to high temperature in a short time and completely combusted in the furnace. It is characterized by producing high-temperature combustion gas while efficiently burning rice husk without requiring a large amount of power. Hereinafter, the configuration of the present invention will be explained with reference to embodiment figures. The space between the upper and lower ends is sealed and divided by vertical partitions to create 4 sets of air chambers la, lb, and lc.
. At the upper part of each air chamber, holes extending through the inner and outer surfaces of the double sealed furnace body 2 were installed, and a nozzle shaft hole 4 was installed in the center, and a storm volume adjustment hole 5 was installed on the lower surface near the rear end. The nozzle shaft 8, which has the air volume adjustment hole 5 and the air velocity adjustment hole 5' passed through the nozzle hole 7 in the pipe body 6, is inserted into the nozzle shaft hole 4 from the rear end of the pipe body 6, and the cap is inserted. A Venturi pipe 9 is formed in the upper part of each air chamber, and a Venturi tube 9a, 9 is inserted into the hole at the upper position of each air chamber.
b, 9c, and 9d are penetrated and fixed from the outer surface to the inner surface, and the air volume adjustment holes 5, 5' are communicated with the air chamber, and the tip of the Venturi tube is made to protrude from the inner surface of the furnace body, and the upper end of the double-sealed furnace body 2 is fixed. An edge plate 10 is horizontally protruded from the inner peripheral surface, a double bonding ring 11 is protruded from the upper surface of the green plate 10, and a first heat-insulating cylinder 12 with a large number of holes on the outer peripheral surface is double-layered. The first rostol 14 inserted into the closed furnace body 2 and cut 13 at the center position is placed on the upper end of the first heat retention cylinder 12, and the center height position and the lower end position of the inner peripheral surface of the first heat retention cylinder 12 are set. A receiving part is provided in the 2nd heating cylinder 12' to support the second heating cylinder 14' and the third heating cylinder 14^, and the second heating cylinder 12' having a diameter smaller than that of the first heating cylinder 12 is provided in the space between the second heating cylinder 14' and the third heating cylinder 14''. is inserted into the third lost route 14'', legs 17 are provided protruding from the lower surface of the heat retaining body 16 made of a disc with a hole 16 in the center position, and the heat retaining body 16 is placed on the second lost route. 4' so that the first lost throughput 4 and the heat insulating body 16 face each other at an appropriate interval, and the flame port 18 is placed above the side surface of the first heat insulating cylinder 12. The ignition tube 19 is moved toward the inner surface from the upper side position to face the flame port 18, and at the lower position of the ignition tube 19, the air intake port 20 is passed from the outer surface to the inner surface of the double sealed furnace body 2. On the other side, the smoke exhaust port 21 is passed through in the same way, and a support plate 24 with a closed receiving hole 23 in the center is fixed to the inner surface near the lower end of the cylinder body 22, which has the same diameter as the outer diameter of the double-sealed furnace body 2. A funnel 25 for regulating the flow area is inserted into the cylindrical body 22, the lower end of the funnel 25 is received in the socket 23, and a joining double ring 11 is placed on the lower surface of the support plate 24.
A funnel cylinder 26 which has been threshed is fixed on the upper surface of the double-closed furnace body 2, and a cylinder 28 is fixed at the center of the upper surface of the support frame 27 of a suitable height, and stoppers are installed on the front and back of the cylinder 28. 2
9 is protruded, and the joint cylinder 3 is iron-fitted to the outer surface of the lower end of the cylinder 28.
An L-shaped groove 31 that engages with a stopper 29 is provided at the upper end of 0, and a joint cylinder 30 is attached to the cylinder 28, and a screw conveyor is provided at the bottom at the center of the upper surface of the stand 27 at the lower end of the support frame 27. The extraction device 32 is installed, the double-sealed furnace body 2 is mounted on the upper surface of the ash extraction device 32, and the upper end of the funnel cylinder 26 on the upper surface of the double-sealed furnace body 2 is fitted into the joint cylinder 30 and supported. It is constructed to constitute a high-pressure blast rice husk combustion furnace device 35 in which four sets of combreathers 33 are suspended from the upper end of the frame 27, and high-pressure hoses 34 extended from the combreathers are passed through corresponding air intake ports. .

In the figure, numeral 36 indicates a rice hull accommodating hopper, and numeral 37 indicates a heat exchanger. Next, the effects of the present invention will be explained with reference to embodiment figures.

The high-pressure blast rice husk combustion furnace device 35 according to the present invention includes a rice husk storage hopper 36 in which a cylindrical hopper is connected to a cylinder 28 provided at the center of the upper surface of a support frame 27, and a required amount of rice husks is placed in the rice husk storage hopper 36. The rice husks are dropped from the funnel cylinder 26 into the double-sealed furnace body 2 while being burnt, and each combustor 33 attached to the upper end of the support frame 27 is activated to start the double-sealed furnace. Four sets of air chambers la, lb, lc, ld around the outer periphery of the body 2
When low-pressure air is fed to the lower end, the fed air rises in the air chamber and is connected to each venturi tube 9a, 9b, 9c, 9 whose injection air amount is adjusted appropriately by rotation of the nozzle shaft 8.
d, the flame is injected radially symmetrically to the space between the heat retainer 16 in the first heat retaining cylinder 12 and the first rostre 14. At the same time, when the flame is injected from the ignition tube 19 with a burner, the heat retainer 1
6 and the first heating cylinder 12 are heated to red heat, and the first heating cylinder 14
The rice husk that fell onto the upper surface of the heat insulating body 16 through the interval continues to ignite and burn, and falls into the second roaster 14' through the gap between the center hole of the heat insulating body 16 and the first heat insulating cylinder 12, and further. It burns while falling with the third rostre 14'', and as the combustion progresses, the inner cylinder of the double-sealed furnace body 2 is simultaneously heated and the air chambers la, lb, lc, and ld are heated. The low-pressure air sent into the air chamber by each combustor immediately becomes high temperature and expands, and the high-temperature heated and pressurized air in the air chamber becomes high-pressure hot air and is injected from each venturi valve 9a, 90, 9c, and 9d. The combustion gas in the double-sealed furnace body 2 is discharged from the smoke exhaust port 21 to the heat exchanger 37 etc. under natural negative pressure for heat exchange, and is heated by hot air and hot water. A sensor detects the temperature of hot air or hot water, or the temperature of combustion gas at the smoke exhaust port 21, and when the temperature rises above a set value, the flame of the burner installed in the ignition tube 19 is stopped, and Each Venturi tube 9a, 9b, 9c, 9
The amount of air injected from d is adjusted, or the venturi tubes 9a, gb and venturi tubes 9c, 9d, which face each other in one venturi tube, are turned on and off by controlling the combustor as a pair. The relative combustion temperature of the combustion gas inside the furnace is adjusted by controlling the injection of high-pressure hot air into the furnace. The combustion ash of rice husk that fell and burned inside the double sealed furnace body 2 is stored in the third roaster 14 in the lower stage.
After falling into the ash extraction device 32 and being collected, the ash is continuously discharged outside the furnace using a conveyor.
, the third rostle 14, 14', 14^ is cut in the center 13
There are some types that can absorb the linear expansion of the rostle due to high heat and prevent distortion of the rostle gap.

The funnel cylinder 26 is disengaged from the cylinder 28 at the upper end of the support frame 27 and slid downward.
It is also possible to easily replace the double-sealed furnace body 2 and remove it for cleaning.It utilizes the natural falling of rice husks, and also uses low-pressure blown air to heat the furnace at high temperature in an air chamber provided around the outside of the furnace body. It can burn rice husk efficiently by injecting it as high-pressure hot air while pressurizing it, and does not require large power for supplying rice husk to the combustion furnace, injecting high-pressure hot air, or removing ash. It has the remarkable effects mentioned above, such as being able to utilize rice husk as agricultural waste at a low cost while burning it at a high temperature to extract energy for heat exchange.

[Brief explanation of the drawing]

Fig. 1 is a front view of a high-temperature blast rice husk combustion furnace according to an embodiment of the present invention, Fig. 2 is a vertical sectional view showing the main parts of the double-sealed furnace body 2, and Fig. 3 is an upper roaster. 4 is a cross-sectional view taken along the line A-A in FIG. 2, FIG. The figure is a partially enlarged sectional view, FIG. 9 is a partially enlarged sectional view of the furnace body showing the venturi tube 9, and FIG. 10 is a front view of the nozzle shaft 8, which is a component of the venturi tube.
FIG. 11 is a bottom view thereof, FIG. 12 is a front view with a portion of the tube body 6 cut away, FIG. 13 is a plan view thereof, and FIG. 14 is a front view with a portion of the first heat insulating cylinder cut away. Fig. 15 is a plan view thereof, Fig. 6 is a front view of the second heat insulating cylinder, Fig. 17 is a plan view thereof, Fig. 18 is a front view of the heat insulating body, Fig. 19 is a plan view thereof, Fig. 20 The figure is a partially cutaway front view of the cylinder 28 at the upper end of the support frame 27, FIG. 21 is a plan view thereof, FIG. 22 is a partially cutaway front view of the joint cylinder 30, and FIG. 23 is a plan view thereof. Figure 24 is a partially cutaway front view of the funnel cylinder;
FIG. 25 is a plan view thereof, and FIG. 26 is a sectional view taken along the line B--B in FIG. 24. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 1 Figure 18 Figure 19 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26

Claims (1)

[Claims] 1. A double sealed furnace body is formed by sealing the upper and lower ends and dividing it with vertical partitions and providing several sets of air chambers on the outer periphery. An air intake port is connected to the lower part of each air chamber, and each air chamber is separated by a vertical partition. A hole that communicates with the inner and outer surfaces of the furnace body is drilled at the upper part of the chamber, a nozzle shaft is inserted into the inside, and the air volume adjustment hole on the lower surface of the rear end of the tube is adjusted by rotating the nozzle shaft. A ventilator tube that adjusts the amount of ejection is passed through the hole at the top of each air chamber to communicate between each air chamber and the furnace body. The first rostol is mounted on the upper end of the first insulation cylinder, and the second rostol and the third rostol are supported at the center height position and the lower end position of the inside, and the second rostol and the third rostol are mounted on the upper end of the first insulation cylinder. A second heat insulating cylinder is inserted at intervals of The ignition tube is placed opposite to the bottom surface and has a flame port opened above the side surface of the first heat-retaining cylinder and communicated with from the outside surface of the furnace body. A funnel cylinder with a funnel inside is placed on the upper end of the double-sealed furnace body, communicating from the outer surface to the inner surface, and also communicating with the smoke exhaust port on the opposite side. A double-sealed furnace body is placed on top of the ash removal device installed at the same location, and the upper end of the funnel cylinder on the top of the double-sealed furnace body is fitted into the joint cylinder provided at the center of the upper end of the support frame to support the furnace. A high-heat blast rice husk combustion furnace device characterized by a high-pressure hose extending from a compressor installed in the frame and communicating with the air intake ports of each air chamber of the furnace body.