JP2005233519A - Flue gas treatment device and stove with flue gas treatment device - Google Patents

Flue gas treatment device and stove with flue gas treatment device Download PDF

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JP2005233519A
JP2005233519A JP2004043712A JP2004043712A JP2005233519A JP 2005233519 A JP2005233519 A JP 2005233519A JP 2004043712 A JP2004043712 A JP 2004043712A JP 2004043712 A JP2004043712 A JP 2004043712A JP 2005233519 A JP2005233519 A JP 2005233519A
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exhaust gas
ventilation
treatment
stove
forming
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Shoichi Ueno
正一 上野
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Shoichi Ueno
正一 上野
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<P>PROBLEM TO BE SOLVED: To provide a flue gas treatment device not using noble metal and ceramic of high heat resistance in an oxidation catalyst. <P>SOLUTION: This flue gas treatment device 30 wherein an exhaust gas including at least one of carbon fine particles and carbon monoxide flows in from an inflow port 31, and the exhaust gas is oxidized and discharged from a discharge port 32, comprises a horn-shaped ventilation part forming body 33 having the wide inflow port 31 and the narrow discharge port 32, and an oxidation treatment part 34 mounted at a peripheral edge part of the ventilation part forming body 33 for oxidizing the exhaust gas. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a flue gas treatment apparatus suitable for use in a stove using woody biomass such as firewood as a fuel, and more particularly to a flue gas treatment apparatus that efficiently removes solid particulates contained in smoke. The present invention also relates to a stove with a flue gas treatment device that efficiently removes solid particulates contained in smoke when woody biomass such as firewood is used as fuel. Furthermore, the present invention relates to a flue gas treatment apparatus suitable for use in a stove using a high-calorie fuel such as coal, and in particular, flue gas that efficiently removes solid particulates contained in exhaust gas having an ignition temperature higher than that of carbonized fuel. The present invention relates to a processing apparatus and a stove with a flue gas processing apparatus.

  As a stove using woody biomass such as firewood as a fuel, there is, for example, a chimney equipment type firewood stove equipped with an oxidation catalyst disclosed in Patent Document 1. According to this wood stove, an excellent heating effect can be obtained by the powerful thermal power generated by burning fuel such as soot, and the unburned gas generated in the combustion space for soot charging is oxidized by the oxidation catalyst from the chimney. Exhausted outside the room. In the soot stove, a partition body is provided inside the cylindrical furnace body in order to prevent the flame generated in the soot-burning combustion space from blowing out from the upper lid portion of the soot stove. Therefore, by providing the oxidation catalyst in the partition, the oxidation catalyst can be maintained in an atmosphere at which the unburned gas can be oxidized efficiently, for example, in an atmosphere of 300 ° C. to 600 ° C. during use of the wood stove. .

  In addition to primary air and secondary air as disclosed in Patent Document 2, other types of wood stoves use tertiary air that completely burns solid particulates and carbon monoxide contained in smoke. Is known and is also called the clean burning method. The clean burning method emits clean exhaust gas during complete operation during steady operation, but the controller is used to properly open and close the inlets of primary air, secondary air, and tertiary air during ignition, fuel addition, and fire extinguishing. Is controlling.

JP 2000-46334 A US Pat. No. 6,595,199B1

  However, according to the oxidation catalyst type disclosed in Patent Document 1, since noble metals such as platinum, palladium, and rhodium are used for the oxidation catalyst, there is a problem that the cost of the exhaust gas treatment mechanism becomes expensive. Further, in order to withstand the high temperature caused by the flame generated in the combustion space, since the ceramic is used as the carrier of the oxidation catalyst, there has been a problem that the exhaust gas treatment mechanism is easily broken and the replacement cost is expensive.

  According to the clean burning method disclosed in Patent Document 2, at the time of ignition, fuel addition, and fire extinguishing, a temperature for completely burning solid particulates and carbon monoxide contained in smoke by tertiary air, for example, 600 ° C. is obtained. However, there was a problem of being discharged as unburned gas. In addition, it is necessary to properly control the open / close state of the primary air, secondary air, and tertiary air intakes during ignition, fuel addition, and fire extinguishing. There was a problem of becoming expensive. In addition, as a popular product, there is a form in which the user manually performs open / close control. However, in the case of manual operation, when the open / close state at ignition is switched to the open / close state at steady state, the open / close operation of the air damper is performed. There is a problem that it is necessary to do this and becomes complicated for the user.

  The present invention solves the above-mentioned problems, and a first object thereof is to provide a flue gas treatment apparatus that does not require the use of a noble metal or a highly heat-resistant ceramic as an oxidation catalyst. It is a second object of the present invention to provide a stove with a smoke treatment device that does not require a complicated air damper opening / closing operation at the time of transition from ignition to steady combustion. Furthermore, a third object of the present invention is to provide a flue gas treatment device and a stove with a flue gas treatment device that do not deteriorate the flue gas treatment characteristics even when used in a stove using a high calorie fuel such as coal. .

  As shown in FIG. 1, for example, as shown in FIG. 1, an exhaust gas containing at least one of carbon-based fine particles or carbon monoxide flows into the flue gas treatment apparatus 30 of the present invention that achieves the first object. A smoke treatment apparatus 30 that oxidizes exhaust gas and discharges it from a discharge port 32, a horn-shaped vent portion forming body 33 having a wide inlet 31 and a narrow discharge port 32, and a peripheral portion of the vent portion forming body 33 And an oxidation treatment unit 34 for oxidizing the exhaust gas.

  In the apparatus configured as described above, the ventilation portion forming body 33 has a horn shape in which the inflow port 31 is wide and the discharge port 32 is narrow, and communicates in a cylindrical shape. Therefore, there is little ventilation resistance of the exhaust gas flow discharged from the discharge port 32, and woody biomass fuel such as soot can be burned smoothly. Further, since the oxidation treatment part 34 is arranged at the peripheral edge of the ventilation part forming body 33, the exhaust gas flow passing through the ventilation part forming body 33 can easily flow into the inside from the interface of the oxidation treatment part 34. Can be efficiently oxidized.

  As shown in FIG. 1, for example, as shown in FIG. 1, an exhaust gas containing at least one of carbon-based fine particles or carbon monoxide flows into the flue gas treatment apparatus 30 of the present invention that achieves the first object. A flue gas treatment device 30 that oxidizes exhaust gas and discharges it from a discharge port 32, a horn-shaped vent portion forming body 33 having a wide inlet 31 and a narrow discharge port 32, and a horn shape of the vent portion forming body 33 A ventilation portion cover portion 38 capable of holding at least two states, a first state in which the region near the discharge port is narrow and a second state in which the region near the discharge port is expanded more than the first state; A cover operation part 39 for holding the part cover part 38 in at least one posture of the first state or the second state, and a peripheral part of the ventilation part forming body 33, in the vicinity of the ventilation part cover part 38. Excluding the waste gas The and an oxidation processing unit 34 for oxidization treatment.

  In the apparatus configured as described above, the horn shape of the ventilation portion forming body 33 is changed by the ventilation portion cover portion 38 from the first state where the region near the discharge port is narrower and the region near the discharge port than the first state. Can also be transformed into the second state of expansion. Therefore, when the horn shape of the ventilation portion forming body 33 is set to the second state, the ventilation resistance is reduced. Therefore, even when the combustion exhaust gas flow is weak, for example, when the stove is ignited, ignition of woody biomass fuel such as firewood Proceeds smoothly and easily shifts to autonomous combustion. Next, when the horn shape of the ventilation part forming body 33 is set to the first state by the cover operating part 39, the combustion exhaust gas is oxidized in the oxidation processing part 34, and the exhaust gas treatment can be performed smoothly.

  Preferably, in the flue gas treatment apparatus of the present invention, the oxidation treatment unit 34 is carbon-based fiber cotton produced from spinning fibers to which carbon fibers or activated carbon having a fine particle size is attached, and the exhaust gas is the carbon. It is desirable that it is below the thermal decomposition start temperature (for example, 230 ° C.) of the base fiber cotton. In the case of carbon fiber cotton, since it is a cotton with many voids, the contact area with the exhaust gas per unit weight is wide, the oxidation reaction and adsorption reaction in the carbon fiber cotton are actively progressed, and the ventilation part forming body The exhaust gas flowing in from the 33 side is discharged to the discharge port 32 side with a small air resistance. In addition, since the exhaust gas temperature is equal to or lower than the thermal decomposition start temperature, carbon-based fiber cotton and carbon-based fine particles adsorbed on the carbon-based fiber cotton do not start thermal decomposition, and stable oxidation characteristics can be obtained over a long period of time. . Preferably, when the exhaust gas temperature is equal to or higher than a thermal decomposition start temperature of the carbon fiber cotton and equal to or lower than an ignition temperature (eg, 600 ° C.), the carbon fine particles adsorbed on the carbon fiber cotton or the carbon fiber cotton are obtained. It does not ignite and is highly safe.

  Preferably, in the flue gas treatment apparatus of the present invention, for example, as shown in FIG. 3, the ventilation part forming body 33 includes an inlet ring 331 that forms the inlet 31, an outlet ring 332 that forms the outlet 32, and It has at least three connecting rods 333 that connect the inlet ring 331 and the discharge port ring 332, and the oxidation treatment unit 34 oxidizes the exhaust gas flowing in through the gap between the connection rods 333 to discharge the exhaust ring 332 side. It is good to have a structure that makes it discharge.

  As shown in FIG. 5, for example, as shown in FIG. 5, the smoke treatment apparatus 30 of the present invention that achieves the third object includes an oxidation treatment unit 34 made of slag, refractory pebbles, perforated refractory pebbles, slag, The ventilation part forming body 33 includes at least one kind, and the reticulated container 33 is a reticulated container that accommodates the constituent members of the oxidation treatment part 34, and the inner peripheral surface of the reticulated container may have a horn shape. If comprised in this way, even if exhaust gas is more than the ignition temperature of carbon-type fuel, and it is below the melting start temperature of the structural member of the oxidation process part 34, the flue gas process by the oxidation process part 34 can be performed smoothly.

  In the smoke treatment apparatus 30 of the present invention that achieves the third object, for example, as shown in FIG. 8, the oxidation treatment part 34 is a porous ceramic produced by high-temperature treatment of the ceramic, and a ventilation part is formed. The body 33 has a horn shape formed on the inner peripheral surface of the porous ceramic, and the combustion exhaust gas is preferably not lower than the ignition temperature of the carbon-based fuel and not higher than the melting start temperature of the porous ceramic.

  A stove with a smoke treatment apparatus of the present invention that achieves the second object is a cylindrical furnace body 11 in which woody biomass fuel such as firewood burns, for example, as shown in FIG. 4. A stove 10 having a vent 12 for supplying air and a chimney connection port 16 for exhausting combustion exhaust gas from the furnace body 11, and the smoke treatment apparatus 30 according to claim 1. The chimney connection port 16 attached to at least one location of the chimney 20 connected to the chimney connection port 16 is provided.

  In the apparatus configured in this manner, the flue gas treatment apparatus 30 is mounted not in the furnace body 11 but in at least one place of the chimney 20 connected through the chimney connection port 16. Woody biomass fuel such as firewood is low in calories compared to high-calorie fuels such as coal because the fuel contains moisture. Therefore, it has been found that the exhaust gas temperature inside the chimney during steady combustion rarely reaches the thermal decomposition start temperature (for example, 230 ° C.) of the carbon-based fiber cotton used in the smoke treatment apparatus 30. . Therefore, the oxidation treatment of the exhaust gas can be efficiently performed using the oxidation treatment unit 34 using, for example, carbon fiber cotton as the smoke treatment apparatus 30.

  The stove with a smoke treatment apparatus of the present invention that achieves the third object is a cylindrical furnace body 71 in which a high calorie fuel such as coal burns, for example, as shown in FIG. A stove 70 having a vent 72 for supplying air, a chimney connection port 76 for exhausting combustion exhaust gas from the furnace body 71, and the smoke treatment apparatus 90 according to claim 4, wherein the furnace body 71 And a flue gas treatment device 90 mounted in an upper combustion chamber 79 that communicates with the chimney connection port 76.

  In the apparatus configured as described above, the smoke treatment apparatus 90 is attached to the upper combustion chamber 79 that connects the furnace body 71 and the chimney connection port 76 instead of the chimney 20. Inside the cylindrical furnace body 71, high-calorie fuel such as coal burns, so that the temperature is higher than the ignition temperature (for example, 600 ° C.) of the carbon fiber cotton. However, because the oxidation treatment part of the flue gas treatment device 90 uses a highly heat-resistant material such as slag, refractory pebbles, perforated refractory pebbles, slag, porous ceramics, etc. Does not deteriorate.

  According to the flue gas treatment apparatus of the first aspect of the present invention, since the oxidation treatment portion is disposed at the peripheral portion of the ventilation portion forming body, the exhaust gas flow passing through the ventilation portion formation body is discharged from the surface of the oxidation treatment portion. Since it can easily flow into the interior, the exhaust gas can be oxidized efficiently. In addition, when the smoke treatment apparatus according to claim 1 of the present invention is mounted on a stove, when the woody biomass fuel such as firewood is used as the fuel for the stove, the combustion exhaust gas temperature is a carbon system used in the smoke treatment apparatus. It rarely reaches the thermal decomposition start temperature of the fiber cotton, and it is not necessary to use a noble metal or a high heat-resistant ceramic for the oxidation catalyst in the oxidation treatment part.

  According to the smoke removal processing apparatus of the second aspect of the present invention, the ventilation portion cover 33 is configured to change the horn shape of the ventilation portion forming body 33 between the first state where the discharge port vicinity region is narrow and the discharge port vicinity region. It can deform | transform into the 2nd state expanded rather than the said 1st state. Therefore, when the horn shape of the ventilation portion forming body 33 is set to the second state, the ventilation resistance is reduced. Therefore, even when the combustion exhaust gas flow is weak, for example, when the stove is ignited, ignition of woody biomass fuel such as firewood Proceeds smoothly and easily shifts to autonomous combustion. Next, when the horn shape of the ventilation part forming body 33 is set to the first state by the cover operating part 39, the combustion exhaust gas is oxidized in the oxidation processing part 34, and the exhaust gas treatment can be performed smoothly. In addition, when the smoke emission treatment device according to claim 2 of the present invention is mounted on a stove, the ventilation resistance of the chimney portion is increased as in the case where a chimney having a horizontal portion is connected to the stove. Sometimes it becomes a condition. Even in this case, by setting the horn shape of the ventilation portion forming body 33 to the second state and reducing the ventilation resistance of the smoke treatment apparatus, the ignition of woody biomass fuel such as soot proceeds smoothly.

  According to the flue gas treatment apparatus according to claims 5 and 6 of the present invention, a material having high heat resistance such as slag, refractory pebbles, perforated refractory pebbles, slag, and porous ceramic is used as the oxidation treatment unit 34. Therefore, even if it is used for a stove that uses a high calorie fuel such as coal, the smoke treatment characteristics do not deteriorate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a structural cross-sectional view showing a first embodiment of a stove with a flue gas treatment apparatus according to the present invention. In the figure, the stove 10 is, for example, a general-purpose wood stove, and has a furnace body 11, a vent 12, a drop gap plate 13, an ash receiving portion 14, a viewing window 15, a chimney connection port 16, and a top surface 17. The furnace body 11 burns woody biomass fuel such as firewood, has a cylindrical shape, and is manufactured from cast iron having high heat resistance. The vent 12 supplies combustion air into the furnace body 11, and for example, an opening / closing door formed on a part of the peripheral surface of the ash receiving portion 14 and having an adjustable opening degree is used. The fall gap plate 13 is used to drop the ash content of fuel burned in the furnace body 11 and the refined fuel. When dropping a relatively large ash content, a rooster is used. When dropping a fine ash content, a screen is used. Is used. The ash receiving portion 14 receives and stores the ash that has fallen from the falling gap plate 13, and also includes a bottom space portion through which air flowing from the vent 12 is supplied into the furnace body 11 through the falling gap plate 13. Forming. The observation window 15 is for observing the combustion state inside the furnace body 11 from the outside. Preferably, the observation window 15 is formed on an opening / closing door provided on the peripheral surface of the furnace body 11. The chimney connection port 16 exhausts the combustion exhaust gas of the furnace body 11 and is provided on the top surface 17 and connected to the chimney 20. The top surface 17 is provided on the upper side surface of the furnace body 11.

  The chimney 20 includes a stove connection portion 21, a flue pipe portion 22, an exhaust portion 23, a rainwater intrusion prevention lid 24, and a windproof cover 25. The stove connection portion 21 is provided at the indoor side end portion of the flue pipe portion 22 and is connected to the chimney connection port 16. The flue pipe portion 22 is a pipe that guides the combustion exhaust gas of the stove 10 to the outside, and a straight pipe that penetrates the roof or a crank-shaped pipe that penetrates the wall is used depending on the installation location. The exhaust part 23 is provided in the outdoor side edge part of the flue pipe part 22, and exhaust gas is discharged | emitted outdoors. The rainwater intrusion prevention lid 24 is provided at the top of the exhaust part 23, and prevents rainwater from entering the flue pipe part 22 from the exhaust part 23 when it rains. The windproof cover 25 is provided on the top peripheral surface of the exhaust part 23, and prevents a situation in which strong wind blows into the flue pipe part 22 from the exhaust part 23 and the combustion exhaust gas flows backward to the stove 10 in a strong wind.

  The flue gas treatment device 30 includes an inlet 31, an outlet 32, a ventilation part forming body 33, an oxidation treatment part 34, a side peripheral wall part 35, a stove side flange 36, an adjuster part 37, a ventilation part cover part 38, and a cover operation part 39. The chimney side flange 40 is provided. The inflow port 31 is located on the stove 10 side of the ventilation part forming body 33, and the discharge port 32 is located on the chimney 20 side of the ventilation part forming body 33. The ventilation portion forming body 33 has a horn shape in which the inlet 31 is wide and the outlet 32 is narrow. For example, it has a high rigidity of about 6 to 12 like an umbrella bone and does not hinder the flow of exhaust gas. A structure using a thin metal rod is used.

  The oxidation treatment part 34 is disposed at the peripheral edge of the ventilation part forming body 33 except for the vicinity of the ventilation part cover part 38 and oxidizes the exhaust gas. The oxidation treatment unit 34 may use carbon fiber cotton produced from spinning fibers to which carbon fibers or activated carbon having a fine particle size are attached. The temperature of the exhaust gas is desirably equal to or lower than the ignition temperature (for example, 600 ° C.) of the carbon fiber cotton, or equal to or lower than the thermal decomposition start temperature (for example, 230 ° C.). In the case of carbon fiber cotton, since it is a cotton with many voids, the contact area with the exhaust gas per unit weight is wide, the oxidation reaction and adsorption reaction in the carbon fiber cotton are actively progressed, and the ventilation part forming body The exhaust gas flowing in from the 33 side is discharged to the discharge port 32 side with a small air resistance. Further, since the exhaust gas temperature is equal to or lower than the ignition temperature, the carbon-based fiber cotton and the carbon-based fine particles adsorbed on the carbon-based fiber cotton do not ignite and the safety is high. Furthermore, when the exhaust gas temperature is equal to or lower than the thermal decomposition start temperature, carbon-based fiber cotton and carbon-based fine particles adsorbed on the carbon-based fiber cotton do not start thermal decomposition, and stable oxidation treatment characteristics can be obtained over a long period of time.

  The side peripheral wall portion 35 forms a space for accommodating the oxidation treatment portion 34 together with the ventilation portion forming body 33. For example, the outer diameter of the chimney 20 is secured at the inlet 31 to ensure an inner diameter that is the same as the inner diameter of the chimney 20. The outer diameter is obtained by adding the effective thickness of the oxidation treatment section 34 to the outer diameter. The stove side flange 36 is a joint portion located on the stove 10 side of the side peripheral wall portion 35. The adjuster unit 37 connects the stove side flange 36 and the stove 10 and absorbs the difference in the positions of the stove 10 and the chimney 20 to prevent the exhaust gas from leaking into the room. The chimney side flange 40 is a joint portion located on the chimney 20 side of the side peripheral wall portion 35 and absorbs the difference between the outer diameter of the side peripheral wall portion 35 and the inner diameter of the chimney 20.

  The ventilation portion cover portion 38 has a horn shape of the ventilation portion forming body 33 in a closed state (first state) where the region near the discharge port is narrow and an open state (second state) where the region near the discharge port is expanded more than the closed state. For example, a shell that forms a partial peripheral surface of the truncated cone is used. 2A and 2B are cross-sectional views of the main part illustrating the open / close state of the vent cover portion 38, where FIG. 2A shows a closed state and FIG. 2B shows an open state. The ventilation portion cover portion 38 includes a shaft support portion 41 and a fiber cotton holding portion 42. The shaft support portion 41 is attached to the end portion on the stove side flange 36 side of the ventilation portion cover portion 38, and allows the ventilation portion cover portion 38 to be moved between a closed posture and an open posture.

  The fiber cotton holding part 42 is formed so that the width near the top of the ventilation part cover part 38 is wide and the width near the bottom part is narrow, and the ventilation part cover part 38 is in a closed state or an open state. Also, the carbon fiber cotton of the oxidation treatment unit 34 is held on the oxidation treatment unit 34 side. For the fiber cotton holding part 42, for example, one partition plate is used by being attached to the frame forming the ventilation part forming body 33. Then, the wing part of the partition plate attached to the ventilation part forming body 33 corresponds to the fiber cotton holding part 42. Therefore, accompanying the opening / closing operation of the ventilation portion cover portion 38, the carbon fiber cotton of the oxidation treatment portion 34 does not move beyond the ventilation portion cover portion 38. Therefore, when the vent cover portion 38 is opened, a gap between the vent cover portion 38 and the vent portion forming body 33 is secured, and air resistance can be reduced. Moreover, when the ventilation part cover part 38 is made into a closed state, combustion exhaust gas passes the oxidation process part 34 by the ventilation part cover part 38 and the fiber cotton holding | maintenance part, and combustion exhaust gas is oxidized efficiently.

  The cover operation unit 39 holds the ventilation unit cover unit 38 in either the closed state or the open state, and for example, a lever is used. Preferably, the cover operation part 39 may hold the ventilation part cover part 38 in an intermediate opening state between the closed state and the open state. The cover operation part connecting part 43 connects one end of the cover operation part 39 and the ventilation part cover part 38, and the connection with the ventilation part cover part 38 is smooth even if the cover operation part 39 moves in the axial direction. For example, it has a bearing mechanism. The lever penetrating portion 44 is a through hole formed in the side peripheral wall portion 35 and the other end of the cover operating portion 39 is exposed. The operator operates the other end of the cover operation part 39 exposed from the lever penetration part 44 to open and close the ventilation part cover part 38. 2 shows a case where the cover operation part 39 is attached to the upper part of the ventilation part cover part 38 via the cover operation part connection part 43. However, the cover operation part 39 is attached to the ventilation part cover part 38. And the chimney side flange 40 may be provided.

  FIG. 3 is a structural perspective view illustrating details of the ventilation portion forming body. The ventilation portion forming body 33 includes an inlet ring 331 located on the inlet 31 side, an outlet ring 332 located on the outlet 32 side, and a connecting rod 333 that connects the inlet ring 331 and the outlet ring 332. Has been. The connecting rods 333 are narrow enough to prevent the carbon fiber cotton of the oxidation treatment part 34 from moving toward the central axis side of the ventilation part forming body 33 and do not hinder the flow of combustion exhaust gas. The air gap is provided.

  FIG. 4 is a structural perspective view illustrating details of the ventilation part forming body and the ventilation part cover part. The ventilation part cover part 38 has a shape that covers, for example, a half circumference of the side surface of the ventilation part forming body 33. The shaft support portion 41 rotatably attaches the end portion on the inlet 31 side of the ventilation portion cover portion 38 and the inlet ring 331, and the ventilation portion cover portion 38 is placed between a closed posture and an open posture. It is movable. The fiber cotton holding portion 42 is a wing-shaped partition plate formed with a wide width in the vicinity of the top portion of the ventilation portion cover portion 38 and a narrow width in the vicinity of the bottom portion. For example, one partition plate is formed at the center of the ventilation portion forming body 33. A region attached to the shaft and projecting from the ventilation portion forming body 33 toward the side peripheral wall portion 35 acts as the fiber cotton holding portion 42. Preferably, when the fiber cotton holding portion 42 is attached to the ventilation portion forming body 33 in a state where the fiber cotton holding portion 42 is not in contact with the closed ventilation portion cover portion 38, the side peripheral wall portion 35 and the fiber cotton holding portion 42 are attached. The opening / closing operation of the ventilation portion cover portion 38 does not interfere with the carbon fibers or the like constituting the oxidation treatment portion 34 in the space regulated by

  In the apparatus configured in this manner, for example, an open / close door that forms the viewing window 15 is opened, and the soot is put into the furnace body 11. The soot is fired by, for example, using a thin soot or paper to raise the temperature inside the furnace body 11 to the ignition temperature of the soot and ignite it. At this time, by opening the ventilation portion cover portion 38 and reducing the air resistance, the combustion exhaust gas is surely discharged to the outside through the chimney 20 even by the rising airflow at the time of ignition. Most of the fireplaces installed in European cold districts have straight pipe chimneys, but in Japanese houses, the chimneys are installed horizontally along the ceiling surface, and then go through the walls and go out to the outdoors. There are many things which become posture of direction. It is known that the updraft at the time of ignition is weaker than the updraft when the soot is stably combusting. become weak. Therefore, it is preferable to open the ventilation portion cover portion 38 so that the combustion exhaust gas does not flow back into the room even during a weak updraft such as when the soot is ignited.

  When the soot is stably combusted and the ascending air current becomes strong, the ventilation portion cover portion 38 is closed, and the combustion exhaust gas is subjected to secondary combustion by the oxidation treatment portion 34. Therefore, even when incompletely burnt black smoke is generated as unburned gas due to burning of soot in the furnace body 11, the flue gas treatment device 30 to which this unburned gas is connected via the chimney connection port 16. Further, combustion (oxidation) is performed by the oxidation processing unit 34 provided in the gas generator, and this secondary combustion greatly reduces the amount of CO (carbon monoxide) in the unburned gas. Therefore, the exhaust gas from the smoke treatment apparatus 30 flows into the chimney 20 near colorless and transparent, which is close to complete combustion due to secondary combustion, and the exhaust gas treatment apparatus 30 is difficult to emit incomplete combustion gas.

  In addition, woody biomass fuel such as firewood has a lower calorie than high-calorie fuel such as coal because water is contained in the fuel. Typically, 2800 [kcal / kg] for well-dried pine cocoons, 2200 [kcal / kg] for thinned wood, and about 6000-8000 [kcal / kg] for high-calorie coal It is. Therefore, it has been found that the exhaust gas temperature inside the chimney during steady combustion rarely reaches the thermal decomposition start temperature (for example, 230 ° C.) of the carbon-based fiber cotton used in the smoke treatment apparatus 30. . Therefore, the oxidation treatment of the exhaust gas can be efficiently performed using the oxidation treatment unit 34 using, for example, carbon fiber cotton as the smoke treatment apparatus 30.

  It has been found that even when coal having a high calorie is burned instead of soot, it is rare to reach the ignition temperature (for example, 600 ° C.) of carbon fiber cotton. Therefore, even when coal is used as the fuel, the oxidation processing unit 34 using carbon fiber cotton does not burn. Moreover, the secondary combustion action of the oxidation process part 34 is stably maintained over a long period of time by using fiber cotton with high carbonization degree and high heat resistance as carbon fiber cotton.

  FIGS. 5A and 5B are perspective views of a main part configuration showing a second embodiment of the smoke emission processing device, where FIG. 5A shows a closed state and FIG. 5B shows an open state. Here, the inlet 31, the outlet 32, the ventilation part forming body 33, the ceramic oxidation treatment part 45, and the ventilation part cover part 38 are illustrated as the smoke emission treatment device 30. The side peripheral wall portion, the stove side flange, the adjuster portion, the cover operation portion, and the chimney side flange are omitted because they are the same as those in FIG. The ceramic oxidation treatment part 45 has higher heat resistance than the carbon fiber cotton oxidation treatment part. Therefore, when the fuel burned in the furnace body 11 is a high calorie fuel such as coke, the combustion exhaust gas temperature of the flue gas treatment device 30 may exceed the ignition temperature of the carbon fiber cotton system. It is beneficial to. The ceramic oxidation processing part 45 is provided with a noble metal oxidation catalyst such as platinum on the surface as a porous structure. Because of the porous structure, the air resistance is low and the surface area is large compared to the volume, so that the oxidation treatment of the combustion exhaust gas can be performed efficiently. Since the flue gas treatment apparatus having the ceramic oxidation treatment part 45 has high heat resistance, it can be installed inside the stove, for example, as shown in FIG.

  FIG. 6 is a structural cross-sectional view showing a third embodiment of the stove with a smoke treatment apparatus according to the present invention. 6 that have the same functions as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. In the figure, the stove 10 is a general-purpose wood stove. The chimney 50 has, for example, a straight pipe type flue that penetrates the roof, and has a stove connection part 51, a flue pipe part 52, an exhaust part 53, a rainwater intrusion prevention lid 54, and a windproof cover 55. The stove connection portion 51 is provided at the indoor side end portion of the flue pipe portion 52 and is connected to the chimney connection port 16. The flue pipe portion 52 is a pipe that guides the combustion exhaust gas of the stove 10 to the outside, and a straight pipe that penetrates the roof is used. The exhaust part 53 is provided in the outdoor side edge part of the flue pipe part 52, and waste gas is discharged | emitted outdoors. The rainwater intrusion prevention lid 54 is provided at the top of the exhaust part 53, and prevents rainwater from entering the flue pipe part 52 from the exhaust part 53 when it rains. The windproof cover 55 is provided on the top peripheral surface of the exhaust part 53, and prevents a situation in which strong wind blows into the flue pipe part 52 from the exhaust part 53 and the combustion exhaust gas flows backward to the stove 10 in a strong wind.

  FIG. 7 is a cross-sectional view of a principal part illustrating the smoke emission processing device 60. The exhaust gas treatment device 60 includes an inlet 61, an exhaust port 62, a ventilation part forming body 63, an oxidation treatment part 64, a side peripheral wall part 65, a stove side flange 66, an adjuster part 67, and a chimney side flange 68. The inflow port 61 is located on the stove 10 side of the ventilation part forming body 63, and the discharge port 62 is located on the chimney 50 side of the ventilation part forming body 63. The ventilation part forming body 63 has a horn shape in which the inflow port 61 is wide and the discharge port 62 is narrow, and has substantially the shape shown in FIG. 3, for example. The oxidation treatment unit 64 is disposed over the entire periphery of the peripheral portion of the ventilation portion forming body 63 and oxidizes the exhaust gas. The oxidation treatment unit 64 is preferably made of carbon fiber cotton produced from spinning fibers to which carbon fibers or activated carbon having a fine particle size are attached.

  The side peripheral wall portion 65 forms a space for accommodating the oxidation treatment portion 64 together with the ventilation portion forming body 63. For example, the outer diameter of the chimney 50 is secured by the inlet 61 so as to secure an inner diameter equal to the inner diameter of the chimney 50. The outer diameter is obtained by adding the effective thickness of the oxidation treatment portion 64 to the outer diameter. The stove side flange 66 is a joint portion located on the stove 10 side of the side peripheral wall portion 65. The adjuster portion 67 connects between the stove side flange 66 and the stove 10, and absorbs the difference in position between the stove 10 and the chimney 50 to prevent the exhaust gas from leaking into the room. The chimney side flange 68 is a joint located on the side of the side peripheral wall 65 on the side of the chimney 50 and absorbs the difference between the outer diameter of the side peripheral wall 65 and the inner diameter of the chimney 50.

  In the apparatus configured as described above, the chimney 50 has a straight pipe type flue, and therefore, compared with the type in which the chimney 20 has a horizontal flue as shown in FIG. Draft effect discharged outdoors is high. Therefore, the smoke exhausting treatment device 60 is provided with a mechanism corresponding to the ventilation portion cover portion 38 and the cover operating portion 39 so that the air resistance of the smoke exhausting treatment device is not adjusted at the time of soot ignition and stable combustion. I'm sorry. Therefore, the structure of the smoke removal processing device 60 is simple because the ventilation cover portion 38 and the cover operation portion 39 are removed from the smoke removal treatment device 30 shown in FIGS. become. Further, it is not necessary to adjust the open / close state of the ventilation portion cover portion 38 by the cover operation portion 39 when the soot is ignited and during stable combustion, and daily use of the soot stove is simple.

  FIG. 8 is a structural sectional view showing a fourth embodiment of the stove with a smoke treatment apparatus according to the present invention. In the figure, a stove 70 is a wood burning stove of, for example, a clean burning method, and includes a furnace body 71, a vent 72, a drop gap plate 73, an ash receiving portion 74, a viewing window 75, a chimney connection port 76, a top surface 77, an internal partition plate. 78, an upper combustion chamber 79, a primary combustion gas discharge port 80, and a flue gas treatment device 90. The furnace body 71 burns wood biomass fuel such as firewood, has a cylindrical shape, and is made of cast iron having high heat resistance. The vent 72 supplies combustion air into the furnace body 71. For example, an opening / closing door formed on a part of the peripheral surface of the ash receiving portion 74 and having an adjustable opening degree is used. The fall gap plate 73 is used for dropping the ash content of fuel burned in the furnace body 71 and the refined fuel. When dropping a relatively large ash content, a rooster is used, and when dropping a fine ash content, a screen is used. Is used. The ash receiving part 74 receives and stores the ash that has fallen from the falling gap plate 73, and at the same time, a bottom space part in which air flowing in from the vent 72 is supplied into the furnace body 71 through the dropping gap plate 73. Forming. The observation window 75 is for observing the combustion state inside the furnace body 71 from the outside. Preferably, the observation window 75 is formed on an open / close door provided on the peripheral surface of the furnace body 71. The chimney connection port 76 exhausts the combustion exhaust gas from the furnace body 71 and is provided on the top surface 77 to which the chimney 20 is connected. The top surface 77 is provided on the upper side surface of the furnace body 71.

  The internal partition plate 78 is a partition provided inside the furnace body 71 and above the viewing window 75, and is divided into a primary combustion chamber in which soot burns and an upper combustion chamber 79 in which combustion exhaust gas is secondary-combusted. doing. The upper combustion chamber 79 has a flue gas treatment device 90, and is preferably provided with a secondary air inlet (not shown) to be a clean burning method. The primary combustion gas discharge port 80 is formed at the inlet of the smoke treatment apparatus 90 of the internal partition plate 78 and sends the primary combustion gas to the smoke treatment apparatus 90. The flue gas treatment device 90 includes an inlet 91, an outlet 92, and a ceramic oxidation treatment unit 94. The ceramic oxidation treatment unit 94 is made of, for example, a porous ceramic produced by high-temperature treatment of ceramic, and an oxidation catalyst having high heat resistance is attached to the surface.

  FIG. 9 is a structural perspective view showing the shape of the ceramic oxidation processing portion in the fourth embodiment, where (A) shows a triangular pyramid and (B) shows a cylindrical shape. Here, when the ceramic oxidation treatment part is fired, consideration is given so that the hollow part has a horn shape. By burning the hollow portion of the ceramic oxidation treatment portion 94 into a horn shape, the ventilation portion forming body 93 is formed integrally with the ceramic oxidation treatment portion 94, and the inlet 91 and the discharge port 92 are formed. The outer shape of the ceramic oxidation processing unit 94 may be a triangular pyramid 94a or a cylindrical shape 94b.

  In the apparatus configured as described above, since the flue gas treatment device 90 is confiscated inside the stove 70, the temperature of the combustion exhaust gas is often 600 ° C. or more of the ignition temperature of the carbon-based fuel. . However, since the melting start temperature of the porous ceramic is, for example, about 1500 ° C., even when a high-calorie solid fuel such as coal is used, the melting temperature of the porous ceramic is equal to or lower than the melting start temperature of the porous ceramic at the inlet temperature of the flue gas treatment device 90. It is possible enough.

  FIG. 10 is a principal configuration perspective view showing a fifth embodiment of the flue gas treatment apparatus, and shows a form to be mounted between the stove 70 and the chimney 50. The flue gas treatment device 90 includes a horn-shaped inner cylindrical surface 95, a bottom support surface 96, an outer cylindrical surface 97, and a ceramic ball portion 98 as a ventilation portion forming body and a ceramic oxidation treatment portion. Further, the flue gas treatment device 90 has a side peripheral wall 99, a stove side flange 100, an adjuster 101, and a chimney side flange 102.

  The horn-shaped inner cylindrical surface 95 forms a horn-shaped inner surface between the inflow port 91 and the discharge port 92, and combustion exhaust gas flowing from the inflow port 91 to the discharge port 92 flows out to the ceramic ball portion 98. It has breathability. The bottom support surface 96 is a ring-shaped net surface that absorbs the difference in diameter between the inflow port 91 and the discharge port 92, and increases the capacity of the ceramic ball portion 98. The outer cylindrical surface 97 forms an outer peripheral surface having air permeability so that the ceramic ball portion 98 does not spill out on the side peripheral wall portion 99 side. The ceramic ball portion 98 is a small particle size oxidation treatment portion having an oxidation catalyst attached to the surface.

  The side peripheral wall portion 99 forms a space for accommodating the ceramic ball portion 98. For example, in order to secure the inner diameter of the chimney 20 to the same degree as the inner diameter of the chimney 20, the outer circumferential surface of the chimney 50 is used as an oxidation treatment portion. The outer diameter is obtained by adding the effective thickness of the ceramic ball portion 98. The stove side flange 100 is a joint portion located on the stove 70 side of the side peripheral wall portion 99. The adjuster unit 101 connects between the stove side flange 36 and the stove 70 and absorbs the difference in position between the stove 70 and the chimney 50 to prevent the exhaust gas from leaking into the room. The chimney side flange 102 is a joint portion located on the chimney 50 side of the side peripheral wall 99 and absorbs the difference between the outer diameter of the side peripheral wall 99 and the inner diameter of the chimney 50.

  In the above-described embodiment of the present invention, the present invention has been described using specific examples. However, the present invention is not limited to the above-described embodiment, and is obvious to those skilled in the art. The embodiment designed within the range is also included. For example, since the chimney has a horizontal part, the draft effect is small, and in order to prevent the combustion exhaust gas from flowing backward into the room when the soot is ignited, a mechanism corresponding to a ventilation part cover part or a cover operation part However, the present invention is not limited to this, and the fan is operated in the exhaust direction at the time of ignition by separately providing a fan. May be.

BRIEF DESCRIPTION OF THE DRAWINGS It is a structure sectional drawing which shows 1st Embodiment of the stove with a flue gas treatment apparatus concerning this invention. It is principal part structure sectional drawing explaining the opening / closing state of the ventilation part cover part 38, (A) has shown the closed state, (B) has shown the open state. It is a structure perspective view explaining the detail of a ventilation part formation body. It is a structure perspective view explaining the detail of a ventilation part formation body and a ventilation part cover part. It is a principal part structure perspective view which shows 2nd Embodiment of a flue gas processing apparatus, (A) has shown the closed state, (B) has shown the open state. It is a composition sectional view showing a 3rd embodiment of a stove with a flue gas treatment device concerning the present invention. FIG. 2 is a cross-sectional view of a main part illustrating a smoke removal processing device 60. It is a structure sectional view showing a 4th embodiment of a stove with a flue gas treatment device concerning the present invention. It is a structure perspective view which shows the shape of the ceramic oxidation process part in 4th Embodiment. It is a principal part structure perspective view which shows 5th Embodiment of a flue gas processing apparatus. It is the longitudinal cross-sectional view which abbreviate | omitted the chimney of the present Example.

10, 70 Stove 11, 71 Furnace 12, 72 Ventilation port 16, 76 Chimney connection port 20, 50 Chimney 30, 60, 90 Smoke treatment device 31, 61, 91 Inlet port 32, 62, 92 Outlet port 33, 63 Ventilation part forming bodies 34, 64, 94 Oxidation treatment part 38 Ventilation part cover part 39 Cover operation part

Claims (8)

  1. An exhaust gas treatment apparatus in which an exhaust gas containing at least one of carbon-based fine particles or carbon monoxide flows in from an inflow port, and the exhaust gas is oxidized to be discharged from an exhaust port;
    A horn-shaped ventilation part forming body having a wide inlet and a narrow outlet;
    An oxidation treatment unit that oxidizes the exhaust gas, which is disposed at a peripheral portion of the ventilation part forming body;
    Smoke removal equipment.
  2. An exhaust gas treatment apparatus in which an exhaust gas containing at least one of carbon-based fine particles or carbon monoxide flows in from an inflow port, and the exhaust gas is oxidized to be discharged from an exhaust port;
    A horn-shaped ventilation part forming body having a wide inlet and a narrow outlet;
    The horn shape of the ventilation part forming body is maintained in at least two states: a first state where the region near the discharge port is narrow and a second state where the region near the discharge port is expanded more than the first state. Possible vent cover part;
    A cover operating portion for holding the ventilation portion cover portion in at least one posture of the first state or the second state;
    An oxidization treatment unit that oxidizes the exhaust gas, which is disposed at a peripheral portion of the ventilation part forming body except in the vicinity of the ventilation part cover part;
    Smoke removal equipment.
  3. The oxidation treatment part is carbon fiber cotton produced from spinning fibers to which carbon fibers or activated carbon having a fine particle size is attached;
    The flue gas treatment apparatus according to claim 1 or 2, wherein the exhaust gas is not higher than a thermal decomposition start temperature of the carbon fiber cotton.
  4. The vent portion forming body includes an inlet ring that forms the inlet, an outlet ring that forms the outlet, and at least three connecting rods that connect the inlet ring and the outlet ring. ;
    The exhaust according to any one of claims 1 to 3, wherein the oxidation treatment unit oxidizes the exhaust gas flowing in through the gap between the connecting rods and discharges the exhaust gas toward the discharge port ring. Smoke treatment equipment.
  5. The oxidation treatment part includes at least one of slag, refractory pebbles, perforated refractory pebbles, slag, and porous ceramics;
    The ventilation part forming body is a mesh container that accommodates the components of the oxidation treatment part, and the inner peripheral surface of the mesh container has a horn shape;
    The flue gas treatment apparatus according to claim 1 or 2, wherein the exhaust gas is equal to or higher than an ignition temperature of the carbon-based fuel and equal to or lower than a melting start temperature of a constituent member of the oxidation treatment unit.
  6. The oxidation treatment part is a porous ceramic produced by high-temperature treatment of the ceramic;
    The ventilation part forming body has a horn shape formed on the inner peripheral surface of the porous ceramic;
    The flue gas treatment apparatus according to claim 1 or 2, wherein the exhaust gas is equal to or higher than an ignition temperature of the carbon-based fuel and equal to or lower than a melting start temperature of the porous ceramic.
  7. A cylindrical furnace body in which woody biomass fuel such as firewood burns, a vent for supplying combustion air to the furnace body, and a stove having a chimney connection port for exhausting combustion exhaust gas from the furnace body;
    5. The smoke treatment apparatus according to claim 1, further comprising: the smoke treatment apparatus mounted at at least one position of a chimney connected to the chimney connection port;
    Stove with smoke treatment device.
  8. A stove having a cylindrical furnace body in which high calorie fuel such as coal burns, a vent for supplying combustion air to the furnace body, and a chimney connection port for exhausting combustion exhaust gas of the furnace body;
    It is a flue gas processing apparatus of Claim 5 or Claim 6, Comprising: The said flue gas processing apparatus with which the said furnace body and the said chimney connection port are mounted | worn is equipped;
    Stove with smoke treatment device.
JP2004043712A 2004-02-19 2004-02-19 Flue gas treatment device and stove with flue gas treatment device Ceased JP2005233519A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251119A (en) * 1988-08-12 1990-02-21 Canon Inc Scanning optical device
JP2009085452A (en) * 2007-09-27 2009-04-23 Stella Kankyo Kagaku:Kk Solid biomass-firing compact incinerator for waste plastic to suppress generation of dioxine, and upper structure of chimney
JP2009115333A (en) * 2007-11-02 2009-05-28 Airpass Eco Project:Kk Woody pellet stove
JP2010133677A (en) * 2008-12-08 2010-06-17 Ueno Shoten:Kk Wood stove diagnosing system and wood stove diagnosing program
JP2011242120A (en) * 2010-04-20 2011-12-01 Dutchwest Japan Kk Combustion catalyst apparatus, and solid fuel combustor
JP2013064560A (en) * 2011-09-19 2013-04-11 Maruyama Tekkosho:Kk Solid fuel combustion device, solid fuel stove, boiler, and power generating apparatus
JP2014020573A (en) * 2012-07-12 2014-02-03 Okamoto Co Ltd Wood stove
WO2014083504A3 (en) * 2012-11-30 2014-07-24 Universidad De Santiago De Chile Post combustor
JP2014238246A (en) * 2013-06-10 2014-12-18 石村工業株式会社 Wood stove
JP2016084950A (en) * 2014-10-23 2016-05-19 株式会社野口鉄工 Firewood stove
CN106439923A (en) * 2016-10-27 2017-02-22 中国矿业大学徐海学院 Novel domestic energy-saving and environmental-friendly heating stove

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251119A (en) * 1988-08-12 1990-02-21 Canon Inc Scanning optical device
JP2009085452A (en) * 2007-09-27 2009-04-23 Stella Kankyo Kagaku:Kk Solid biomass-firing compact incinerator for waste plastic to suppress generation of dioxine, and upper structure of chimney
JP2009115333A (en) * 2007-11-02 2009-05-28 Airpass Eco Project:Kk Woody pellet stove
JP2010133677A (en) * 2008-12-08 2010-06-17 Ueno Shoten:Kk Wood stove diagnosing system and wood stove diagnosing program
JP2011242120A (en) * 2010-04-20 2011-12-01 Dutchwest Japan Kk Combustion catalyst apparatus, and solid fuel combustor
JP2013064560A (en) * 2011-09-19 2013-04-11 Maruyama Tekkosho:Kk Solid fuel combustion device, solid fuel stove, boiler, and power generating apparatus
JP2014020573A (en) * 2012-07-12 2014-02-03 Okamoto Co Ltd Wood stove
WO2014083504A3 (en) * 2012-11-30 2014-07-24 Universidad De Santiago De Chile Post combustor
JP2014238246A (en) * 2013-06-10 2014-12-18 石村工業株式会社 Wood stove
JP2016084950A (en) * 2014-10-23 2016-05-19 株式会社野口鉄工 Firewood stove
CN106439923A (en) * 2016-10-27 2017-02-22 中国矿业大学徐海学院 Novel domestic energy-saving and environmental-friendly heating stove
CN106439923B (en) * 2016-10-27 2019-01-29 中国矿业大学徐海学院 A kind of home-use energy-saving environmental protection heating stove

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