JP2012017872A - Incineration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably perform generation of a combustion gas in a primary combustion chamber by smoothly performing starting of combustion of a combustion material in the primary combustion chamber and stably performing combustion of a combustion material even if the combustion material is charged thereafter, to reliably perform combustion in a secondary combustion chamber and to enhance combustion efficiency.SOLUTION: In an incineration device including a combustion tower 1 having the primary combustion chamber 2 wherein the combustion material W is charged, air is introduced and the combustion material W is burned and a secondary combustion chamber 3 provided to be continuously connected to an upper side of the primary combustion chamber 2, and burning the combustion gas from the primary combustion chamber 2 to exhaust resultant gas, a cylindrical body 30 provided to cross the primary combustion chamber 2, heated and igniting the combustion material W in the primary combustion chamber 2 and an ignition burner 31 radiating flame in the cylindrical body 30 to heat the cylindrical body 30 are provided in the primary combustion chamber 2.

Description

  The present invention relates to an incinerator for incinerating combustibles such as cattle and chickens such as animal dung, wood, paper, plastic, and the like, and in particular, a primary combustion chamber is provided at the lower side of one combustion tower. The present invention relates to an incinerator having a secondary combustion chamber on the upper side.

  Conventionally, as this type of incinerator, for example, a technique described in JP-A-9-49618 (Patent Document 1) is known. As shown in FIG. 6, the primary combustion chamber 100 that combusts the combustion product W and the secondary combustion chamber that is continuously provided on the upper side of the primary combustion chamber 100 and burns and exhausts the combustion gas from the primary combustion chamber 100. And a combustion chamber 101. In the primary combustion chamber 100, the combustion product W is introduced from the hopper 102 by the screw conveyor 103 and placed on the rooster 104, and is ignited and burned by the burner 105. The combusted combustion gas passes through the lattice-shaped shielding plate 106 while being swirled, reaches the secondary combustion chamber 101, and is further burned and exhausted in the secondary combustion chamber 101.

Japanese Patent Laid-Open No. 9-49618

  By the way, in the conventional incinerator, in the primary combustion chamber 100, the combustion product W is ignited by the burner 105, but the combustion product W is introduced from the hopper 102 by the screw conveyor 103 and placed on the rooster 104. Therefore, the combustion product W is dispersed on the rooster 104, so that when the combustion product W is ignited, the flame of the burner 105 only partially hits the combustion product W on the rooster 104, and the whole fire is turned on. There is a problem that it is difficult to start the combustion easily. In addition, even if the burnt material W is ignited and the whole burns up, when the next burned product W is supplied from the screw conveyor 103, when the temperature is lowered and an attempt is made to extinguish the fire, the burner 105 is operated again. In this case as well, the flame of the burner 105 only partially hits the combustible W on the rooster 104, and it is difficult for the entire fire to circulate. Therefore, it is difficult to obtain stable combustion of the combustible W. There was a problem. In particular, it is difficult to cope with burning while continuously burning the burned material W. This causes unevenness in the combustion gas that reaches the secondary combustion chamber 101, which also hinders combustion in the secondary combustion chamber 101 and impairs combustion efficiency.

  The present invention has been made in view of the above points, and makes it possible to smoothly start up combustion of the combusted material in the primary combustion chamber. Improve combustion efficiency by enabling stable combustion, generating stable combustion gas in the primary combustion chamber, and ensuring combustion in the secondary combustion chamber It aims at providing the incinerator which aimed at.

In order to achieve such an object, the incinerator of the present invention comprises a primary combustion chamber in which a combusted material is introduced and air is introduced to combust the introduced combusted material, and continuously above the primary combustion chamber. An incinerator provided with a combustion tower having a secondary combustion chamber provided with a secondary combustion chamber for burning and exhausting combustion gas from the primary combustion chamber,
A cylindrical body that is provided in the primary combustion chamber across the primary combustion chamber and is heated to ignite the combusted material in the primary combustion chamber, and a flame is emitted into the cylindrical body to heat the cylindrical body. It is configured with an ignition burner. The cylindrical body is formed of a heat resistant member such as ceramics or metal.

According to this incinerator, when the combusted material is burned for the first time, the combusted material is introduced into the primary combustion chamber, and in this state, the ignition burner is ignited. Thereby, a flame is emitted from the ignition burner into the cylindrical body, the cylindrical body is heated to a high temperature, and the combustion product is ignited. In this case, since the cylindrical body is provided across the primary combustion chamber, the range of the combustibles that come into contact with the surface of the cylindrical body becomes wide, so that it is easy for the entire combustibles to turn on fire. The combustion starts up smoothly. If combustion is stabilized, the ignition burner is stopped as necessary. In this case, since air is introduced into the primary combustion chamber, combustion of the combustion product is continuously performed.
In addition, while the combustion product is burning, even if the ignition burner is stopped, the combustion continues by heating the cylindrical body, and even if the combustion product is charged, the temperature of the combustion product during combustion is unlikely to decrease. If it falls too low, activate the ignition burner again in a timely manner. As a result, a flame is emitted from the ignition burner into the cylindrical body, and the cylindrical body is heated to a high temperature, so that combustion of the combustion product is continued. In this case as well, since the cylindrical body is provided across the primary combustion chamber, the range of the combustibles that come into contact with the surface of the cylindrical body becomes wide, so that the entire combustibles are ignited. This facilitates the combustion of the combustible material.

  The combustion gas generated by the combustion in the primary combustion chamber reaches the secondary combustion chamber, where it is further burned and exhausted. In this case, since combustion of the combustion products in the primary combustion chamber is stably performed, the generated combustion gas has no unevenness and is stably supplied to the secondary combustion chamber, so that combustion in the secondary combustion chamber is not performed. Surely done. As a result, combustion gas can be stably generated in the primary combustion chamber, combustion can be reliably performed in the secondary combustion chamber, and combustion efficiency can be greatly improved.

  And if necessary, a cylindrical body air supply section for supplying air to the cylindrical body is provided, and a plurality of air outlets are provided along the longitudinal direction of the cylindrical body at least on the lower side of the cylindrical body. It is set as the structure which provided. The function of the cylindrical body air supply unit can be realized by using an ignition burner, stopping feeding fuel to the ignition burner, and sending only air. When combustion of the ignition burner is stopped and air is fed by the cylindrical body air supply unit, air is blown out from at least the lower air outlet of the cylindrical body. In this case, since the cylindrical body is heated in a so-called burned ball state, the unburned gas around the cylindrical body burns upward as if it were a burner by the air blown from the air outlet, and releases the flame. To do. Therefore, the combustion product can be reliably burned. Further, in this case, since the cylindrical body is provided across the primary combustion chamber, the range of the combustibles that come into contact with the surface of the cylindrical body becomes wide, so that the air ejected from the cylindrical body Therefore, the combustion of the combustible material is performed more stably because air flows evenly from below to the combusted material and burns the unburned gas. Is called. If the temperature is low, the ignition burner may be activated again.

Further, if necessary, the lower side wall portion of the lower side of the combustion tower constituting the primary combustion chamber is configured to include a front wall, a rear wall, and a pair of side walls, and the pair of side walls are directed from the upper side to the lower side. Are formed so as to be gradually closer to each other, and an ash discharge opening is formed between the lower ends of the pair of side walls to discharge ash in the front-rear direction, and the lower end of the side walls is provided below the ash discharge opening. A bowl-shaped ash receiving groove for receiving ash is provided,
The tubular body is provided between the front wall and the rear wall,
A screw conveyor is disposed in the ash receiving groove to convey ash to either the front wall or the rear wall,
Provided on the upper side wall of the upper side of the combustion tower constituting the primary combustion chamber is an inlet that is positioned higher than the cylindrical body and into which the combustible material is introduced, and the combustible material is conveyed to the inlet and is introduced. A combustor transporting part that is introduced into the primary combustion chamber from the mouth is provided.

  Thereby, in the lower side wall portion on the lower side of the combustion tower, the pair of side walls are inclined so as to gradually approach each other from the upper side to the lower side. The burned product is deposited on the cylindrical body and burned while gradually moving down, and the burned ash falls to the ash receiving groove through the side of the cylindrical body. . The ash that has fallen into the ash receiving groove is discharged by operating the screw conveyor. In this case, the combustion product is burned while gradually moving downward, so that the combustion is performed without unevenness. In addition, the combustion product can be introduced from the inlet by the combustion material conveying section and the ash can be discharged from the ash receiving groove, so that the ash can be automatically discharged while automatically supplying the combustion product, thereby enabling a long-time automatic operation. .

  In this case, if necessary, the combusted material conveying portion is provided outside the combustion tower and stores a combusted material, and a passage pipe provided between the hopper outlet and the charging port through which the combusted material passes. And a screw conveyor that is provided in the passage pipe and conveys the combustion product from the hopper to the charging port. Automatic supply of the combustion product can be easily performed.

  If necessary, a plurality of air outlets for blowing air from the outside into the primary combustion chamber are provided on the lower side wall of the lower side of the combustion tower constituting the primary combustion chamber. Air can be blown upward from the lower side wall portion formed on the lower side of the combustion tower, so that the air can be reliably supplied to the combustion product and reliably burned.

  Further, if necessary, a partition wall for partitioning the primary combustion chamber and the secondary combustion chamber is provided, and a plurality of gas passage ports through which the combustion gas of the primary combustion chamber can pass are formed in the partition wall, The gas passage port is configured to have its axis inclined so that the combustion gas is ejected as a swirling flow into the secondary combustion chamber. As a result, the combustion gas is ejected as a swirling flow into the secondary combustion chamber, so that combustion in the secondary combustion chamber is reliably performed.

  Furthermore, if necessary, a discharge port for discharging the exhaust gas from the secondary combustion chamber is provided at the upper part of the combustion tower constituting the secondary combustion chamber, and a pipe body communicating with the discharge port is connected to the exhaust port from the discharge port. It is configured to be suspended in the secondary combustion chamber. The tubular body is formed of a heat resistant member such as ceramics or metal. As a result, a swirling flow of the combustion gas is also generated around the tube body, and when the tube body is heated, the combustion gas in contact with the tube body is more reliably burned. The exhaust gas is discharged from the discharge port through the pipe body.

  If necessary, a plurality of air outlets for blowing air from the outside into the secondary combustion chamber are provided in the wall portion of the combustion tower constituting the secondary combustion chamber. Thereby, since air is supplied into the secondary combustion chamber, combustion is reliably performed.

  Furthermore, it is set as the structure provided with the heat exchange part which performs heat exchange with the waste gas from the said secondary combustion chamber and water as needed. The heat of exhaust gas can be used, and labor saving can be achieved.

  In this case, if necessary, the heat exchanging section is provided with a front chamber in which exhaust gas from the secondary combustion chamber is collected, and a plurality of downfall smoke pipes provided below the front chamber and in which exhaust gas in the front chamber descends. An intermediate chamber in which exhaust gas from the descending smoke tube group is gathered, and a plurality of rising smoke tube groups provided in the upper side of the intermediate chamber in which the exhaust gas in the intermediate chamber rises A rear chamber that is located above the rising smoke tube group and is adjacent to the front chamber with a partition wall therebetween, in which exhaust gas from the rising smoke tube group is collected, and exhaust gas from the rear chamber connected to the rear chamber And a heat exchange water tank that surrounds the descending smoke tube group and the rising smoke tube group and stores water and performs heat exchange between the exhaust gas and the water through the descending smoke tube group and the rising smoke tube group. It is composed. Since heat exchange is performed for the exhaust gas through the descending smoke tube group and the ascending smoke tube group, that is, the exhaust gas is folded up and down to perform heat exchange, the heat exchange efficiency is extremely good.

  If necessary, an opening / closing door is provided in the partition that separates the front chamber and the rear chamber, and the partition is opened and closed to allow the exhaust gas in the front chamber to flow directly into the rear chamber. Thereby, when performing heat exchange with water and waste gas, an opening-and-closing door is closed. On the other hand, when heat exchange between water and exhaust gas is not performed, the door is opened. By controlling the door, for example, the door is normally closed and heat is exchanged between water and exhaust gas in the heat exchange tank. When the temperature of the water in the heat exchange tank rises, the door is opened. The water in the heat exchange tank can be maintained at a constant temperature without boiling. The control by the open / close door is extremely responsive compared to the combustion control on the combustion chamber side, and the hot water control becomes easy.

  Furthermore, it is set as the structure which provided the cooling tower through which waste gas passes between the said back chamber and the said chimney as needed. Since the exhaust is cooled, deterioration of the chimney is suppressed.

In addition, if necessary, a temperature sensor for measuring the temperature in the primary combustion chamber is provided, and when the temperature by the temperature sensor falls below a predetermined lower limit temperature, the ignition burner is operated, and the temperature by the temperature sensor is When the temperature becomes equal to or higher than a predetermined upper limit temperature, the ignition burner control unit is provided to stop the ignition burner.
As a result, the ignition burner automatically operates according to the temperature of the primary combustion chamber and the cylindrical body is heated, so that the combustion product can be burned with the temperature of the primary combustion chamber within the predetermined temperature range. Thus, combustion can be performed more stably.

  According to the present invention, since the cylindrical body heated by the ignition burner is provided across the primary combustion chamber, the range of the combustibles in contact with the surface of the cylindrical body is widened. It becomes easier for fire to turn around the entire combustion product, and the combustion can be started up smoothly. In addition, while the combustion product is burning, even if the ignition burner is stopped, the combustion continues by heating the cylindrical body, and even if the combustion product is charged, the temperature of the combustion product during combustion is unlikely to decrease. If it is too low, when the ignition burner is actuated again in a timely manner, the cylindrical body is similarly heated to a high temperature, so that the combustion of the combustion product is continued. In this case as well, since the cylindrical body is provided across the primary combustion chamber, the range of the combustibles that come into contact with the surface of the cylindrical body becomes wide, so that the entire combustibles are ignited. This facilitates the combustion of the combustible material.

It is a figure which shows the incinerator which concerns on embodiment of this invention, (a) is a front view, (b) is a right view. It is a figure which shows the incinerator which concerns on embodiment of this invention, (a) is a rear view, (b) is a left view. It is front sectional drawing which shows the incinerator of this invention with the effect | action. It is a figure which shows the incinerator of this invention, (a) is side sectional drawing shown with the effect | action of an incinerator, (b) is a cross-sectional view of a cylindrical body. It is front sectional drawing which shows the incinerator of this invention with the another effect | action. It is sectional drawing which shows an example of the conventional incinerator.

Hereinafter, based on an accompanying drawing, an incinerator concerning an embodiment of the invention is explained in detail.
1 to 5 show an incinerator S according to the embodiment. The incinerator S includes an incinerator Sa including the combustion tower 1 and a heat exchange unit Sb.

  The combustion tower 1 of the incinerator Sa is provided continuously with a primary combustion chamber 2 in which the combusted material W is introduced and air is introduced to combust the injected combusted material W, and above the primary combustion chamber 2. And a secondary combustion chamber 3 for burning the combustion gas from the primary combustion chamber 2 and exhausting it. The primary combustion chamber 2 and the secondary combustion chamber 3 are formed of a refractory material, and a heat insulating material is attached to the outer surface. The combustion tower 1 is covered with a metal covering member 4.

  As shown in FIGS. 3 to 5, an air chamber 5 in which air introduced from the outside is temporarily stored is formed between the combustion tower 1 and the covering member 4. In the air chamber 5, a portion corresponding to the connecting portion between the primary combustion chamber 2 and the secondary combustion chamber 3 is partitioned by a partition 8, and the lower side wall on the lower side of the combustion tower 1 constituting the primary combustion chamber 2 The portion corresponding to the connecting portion between the portion 6 and the upper upper side wall portion 7 is also partitioned by a partition 9, and is divided into a first air chamber 11, a second air chamber 12, and a third air chamber 13 in order from the bottom. ing. Air is supplied to the first air chamber 11, the second air chamber 12 and the third air chamber 13 through the air pipe 14 by the intake blower 10.

  The lower side wall 6 on the lower side of the combustion tower 1 that constitutes the primary combustion chamber 2 includes a front wall 15, a rear wall 16, and a pair of side walls 17 that are connected to the left and right of the front wall 15 and the rear wall 16, respectively. It is configured with. The pair of side walls 17 are inclined so as to gradually approach each other from the upper side to the lower side, and an ash discharge opening 18 for discharging ash in the front-rear direction is formed between the lower ends of the pair of side walls 17. ing. Below the ash discharge opening 18, a bowl-shaped ash receiving groove 19 is provided which is connected to the lower end of the side wall 17 and receives ash.

  A partition wall 20 that partitions the primary combustion chamber 2 and the secondary combustion chamber 3 is provided between the primary combustion chamber 2 and the secondary combustion chamber 3. The partition wall 20 is formed with a plurality of gas passage openings 20a through which the combustion gas in the primary combustion chamber 2 can pass, and the plurality of gas passage openings 20a swirl the combustion gas into the secondary combustion chamber 3. It is formed with its axis inclined so as to be ejected.

An exhaust port 21 for exhausting exhaust gas from the secondary combustion chamber 3 is provided in the upper center of the combustion tower 1 constituting the secondary combustion chamber 3. Inside the secondary combustion chamber 3 of the discharge port 21, a pipe body 22 communicating with the discharge port 21 is suspended from the discharge port 21 toward the secondary combustion chamber 3. The tubular body 22 is formed of a heat resistant member such as ceramic or metal. The secondary combustion chamber 3 is provided with an ignition burner 23 for igniting the combustion gas supplied to the secondary combustion chamber 3.
In addition, a flue pipe 24 formed of a refractory member that guides exhaust gas from the discharge port 21 to the heat exchange part Sb is connected to the outside of the discharge port 21.

  Further, in the lower side wall portion 6 on the lower side of the combustion tower 1 constituting the primary combustion chamber 2, a plurality of air that blows air from the outside obliquely upward through the first air chamber 11 into the primary combustion chamber 2 on the side wall 17. An air outlet 25 is provided. In addition, a plurality of air outlets 26 are provided in the upper side wall portion 7 on the upper side of the combustion tower 1 constituting the primary combustion chamber 2 so that air from outside is swirled into the primary combustion chamber 2 through the second air chamber 12 and blown out. Is provided. Further, a plurality of air outlets 27 for blowing air from the outside into the secondary combustion chamber 3 are provided in the wall portion of the combustion tower 1 constituting the secondary combustion chamber 3.

  In the primary combustion chamber 2, a cylindrical body 30 provided across the primary combustion chamber 2 and heated to ignite the combustion product W in the primary combustion chamber 2, and a flame is emitted into the cylindrical body 30. And an ignition burner 31 for heating the cylindrical body 30. The cylindrical body 30 is formed of a heat resistant member such as ceramic or metal. As shown in FIG. 4A, the cylindrical body 30 is provided between the front wall 15 and the rear wall 16 on the lower side wall portion 6 on the lower side of the combustion tower 1 constituting the primary combustion chamber 2. It has been. A plurality of air outlets 32 are provided along the longitudinal direction of the cylindrical body 30 at least on the lower side of the cylindrical body 30. As shown in FIG. 4B, the air outlet is opened downward at an angle of 45 ° with respect to the vertical center line P of the cylindrical body 30.

  An ignition burner 31 is provided on the rear wall 16 side. The ignition burner 31 injects liquid fuel such as kerosene with air and ignites the liquid fuel to generate a flame. In addition, a cylindrical air supply unit 35 that supplies air into the cylindrical body 30 is provided. In the embodiment, the function of the cylindrical body air supply unit 35 is realized by using the ignition burner 31 to stop sending fuel to the ignition burner 31 and sending only air.

  As shown in FIGS. 3 to 5, the ash receiving groove 19 has a screw conveyor 36 that conveys ash to either one of the front wall 15 and the rear wall 16 (in the embodiment, the rear wall 16 side). Has been placed. The screw conveyor 36 is rotationally driven by an electric motor 37 and discharges the ash that has fallen into the ash receiving groove 19 from a discharge port 38 outside the front wall 15.

  Furthermore, the upper side wall 7 on the upper side of the combustion tower 1 constituting the primary combustion chamber 2 is provided with an inlet 40 that is positioned higher than the cylindrical body 30 and into which the combustion product W is introduced. As shown in FIGS. 1 and 2, there is provided a combustible transporting portion 41 that transports the combustible W to the input port 40 and inputs the combustible W into the primary combustion chamber 2 from the input port 40. The combustible material transport unit 41 is provided outside the covering member 4 that covers the combustion tower 1 and stores the combustible material W, and is provided between the outlet and the inlet 40 of the hopper 42 and through which the combustible material W passes. A pipe 43, a screw conveyor 44 that is provided in the passage pipe 43 and conveys the combustion product W from the hopper 42 to the charging port 40, and an electric motor 45 that drives the screw conveyor 44 are configured.

  Next, the heat exchange part Sb will be described. As shown in FIGS. 3 and 4, the heat exchanging unit Sb performs heat exchange between the exhaust gas exhausted from the secondary combustion chamber 3 through the flue pipe 24 and water. The heat exchanging part Sb includes a front chamber 50 in which exhaust gas from the secondary combustion chamber 3 is collected, a number of descending smoke tube groups 51 provided below the front chamber 50 and in which the exhaust gas in the front chamber 50 descends, An intermediate chamber 52 provided below the smoke tube group 51 in which exhaust gas from the descending smoke tube group 51 is collected, a number of rising smoke tube groups 53 provided above the intermediate chamber 52 in which the exhaust gas in the intermediate chamber 52 rises, and a rise A rear chamber 54 that is provided on the upper side of the smoke tube group 53 and adjacent to the front chamber 50 with a partition wall therebetween, in which exhaust gas from the rising smoke tube group 53 is collected, and exhaust gas from the rear chamber 54 that is connected to the rear chamber 54 And a heat exchange water tank 56 that surrounds the descending smoke tube group 51 and the rising smoke tube group 53 and stores water and exchanges heat between the exhaust gas and water through the descending smoke tube group 51 and the rising smoke tube group 53. And is configured.

The partition wall that separates the front chamber 50 and the rear chamber 54 is provided with an opening / closing door 57 that opens and closes the partition wall and allows the exhaust gas in the front chamber 50 to flow directly into the rear chamber 54. This open / close door 57 is opened and closed in a timely manner by electric drive.
Further, a cooling tower 58 through which exhaust gas passes is provided between the rear chamber 54 and the lower end of the chimney 55. Above the cooling tower 58, there is provided a cooling door 58a that can be opened and closed in a timely manner and can introduce air when it is opened to cool the exhaust gas. Between the cooling tower 58 and the chimney 55, there is provided a discharge blower 59 for sucking exhaust gas and feeding it to the chimney 55.
In addition, a water expansion chamber 60 that is connected to the upper portion of the heat exchange water tank 56 via a conduit 61 and adjusts the pressure in the heat exchange water tank 56 is provided above the front chamber 50 and the rear chamber 54. The heat exchange water tank 56 is provided with a water supply port (not shown) for supplying water and a hot water outlet (not shown) for taking out the warm water.

  Furthermore, a temperature sensor for detecting the temperature in the primary combustion chamber 2 and the secondary combustion chamber 3 is provided. Various temperature sensors such as a water temperature sensor for detecting the water temperature, an exhaust temperature sensor for detecting the exhaust temperature of the chimney 55, a flame temperature sensor for detecting the temperature of the ignition burner 31, and the like are provided. A control unit (not shown) capable of performing various manual or automatic controls based on the detection is provided. In particular, the control unit operates the ignition burner 31 when the temperature of the temperature sensor of the primary combustion chamber 2 becomes equal to or lower than a predetermined lower limit temperature while the apparatus is in operation, and the temperature of the temperature sensor is equal to or higher than the predetermined upper limit temperature. When it becomes, the ignition burner control part which stops the ignition burner 31 is provided. Further, the control unit has a function of operating the screw conveyor 36 that conveys the ash dropped into the ash receiving groove 19 continuously, intermittently, or manually at an appropriate time. Further, the control unit operates the screw conveyor 44 of the combustion product transport unit 41 continuously or intermittently or at an appropriate time manually to transport the combustion product W. In this case, a limit switch for detecting the upper limit of the accumulation of the combustion substance W is provided in the primary combustion chamber 2, and the operation of the screw conveyor 44 of the combustion substance conveyance unit 41 can be stopped based on the detection of this limit switch. The conveyance of the combustion product W is adjusted so that the combustion amount of the combustion product W and the supply amount of the combustion product W are not excessive or insufficient.

  Therefore, according to the incinerator S according to this embodiment, when the combusted material W is combusted for the first time, the combusted material W is put into the primary combustion chamber 2 and the ignition burner 31 is ignited in this state. Thereby, a flame is radiated | emitted in the cylindrical body 30 from the ignition burner 31, the cylindrical body 30 is heated to high temperature, and the combustion thing W is ignited. In this case, since the cylindrical body 30 is provided across the primary combustion chamber 2, the range of the combustion product W in contact with the surface of the cylindrical body 30 becomes wide, so that the entire combustion product W is The fire is easily heated and the fire is easily turned on, and the combustion of the combustible W is started up smoothly.

If the combustion is stabilized, the ignition burner 31 is stopped as necessary. At this time, since air is introduced into the primary combustion chamber 2 from the air outlets 25 and 26, the combustion product W is continuously burned. In this case, air can be blown upward from the air outlet 25 of the lower wall portion 6 formed on the lower side of the combustion tower 1, so that the air is reliably supplied to the combustion product W. Can be reliably burned.
Further, as shown in FIG. 4, the combustion of the ignition burner 31 is stopped and air is sent in by the cylindrical body air supply unit 35, so that air blows out from the air outlet 32 on the lower side of the cylindrical body 30. Is issued. In this case, since the cylindrical body 30 is heated in a so-called roasted ball state, the unburned gas around the cylindrical body 30 burns upward as if by a blower air from the air outlet 32, Release a flame. Therefore, the combustible W can be reliably burned. Further, in this case, since the cylindrical body 30 is provided across the primary combustion chamber 2, the range of the combustible W that contacts the surface of the cylindrical body 30 becomes wide, and therefore the cylindrical body 30. Since the air blown out from the air easily travels around the entire combustion product W, the air flows evenly from the lower side of the combustion product W and burns the unburned gas. W is burned stably.

  Further, while the combustion product W is burning, even if the ignition burner 31 is stopped, the combustion is continued by heating the cylindrical body 30, and the temperature of the combustion product W during combustion even if the combustion product W is input. If the temperature of the primary combustion chamber 2 falls below 150 ° C., for example, the ignition burner 31 is actuated again in a timely manner based on the temperature detection of the temperature sensor. . As a result, a flame is emitted from the ignition burner 31 into the cylindrical body 30 and the cylindrical body 30 is heated to a high temperature, so that the combustion of the combustible W is continued. Also in this case, since the cylindrical body 30 is provided across the primary combustion chamber 2, the range of the combustion product W in contact with the surface of the cylindrical body 30 is widened. The fire is easy to turn around, and the combustion of the combustible W is performed stably.

  The combustion gas generated by the combustion in the primary combustion chamber 2 reaches the secondary combustion chamber 3, and is further combusted in the secondary combustion chamber 3 by the ignition by the ignition burner 23 and exhausted. In this case, since air is blown out from the air outlet 27 into the secondary combustion chamber 3, combustion is reliably performed. Further, in this case, since the combustion of the combustion product W in the primary combustion chamber 2 is stably performed, the generated combustion gas has no unevenness and is stably supplied to the secondary combustion chamber 3. Combustion in the chamber 3 is performed reliably. As a result, combustion gas can be stably generated in the primary combustion chamber 2, and combustion in the secondary combustion chamber 3 can be performed reliably, so that the combustion efficiency is greatly improved.

Furthermore, in this case, a plurality of gas passage ports 20a are formed in the partition wall 20 that partitions the primary combustion chamber 2 and the secondary combustion chamber 3, and the gas passage ports 20a are configured so that the combustion gas is swirled in the secondary combustion chamber 3. As a result, the combustion gas is ejected as a swirling flow into the secondary combustion chamber 3, so that combustion in the secondary combustion chamber 3 is performed. Surely done.
Furthermore, since the tubular body 22 is suspended from the discharge port 21 of the secondary combustion chamber 3, the swirling flow of the combustion gas is also generated around the tubular body 22, and when the tubular body 22 is heated, the tubular body 22 is heated. The combustion gas in contact with the body 22 burns more reliably. The exhaust gas is discharged from the discharge port 21 through the tube body 22.

  In addition, in the lower side wall portion 6 on the lower side of the combustion tower 1, the pair of side walls 17 are inclined so as to gradually approach each other from the upper side to the lower side. The combustion substance W introduced from the mouth 40 is deposited on the cylindrical body 30 and burned while gradually moving downward, and the burned ash passes through the side of the cylindrical body 30. It falls into the ash receiving groove 19. The ash that has fallen into the ash receiving groove 19 is discharged by operating the screw conveyor 36. In this case, the combustion product W is burned while gradually moving downward, so that the combustion is performed without unevenness. In addition, since the combustion product W can be input from the input port 40 by the combustion product transport unit 41 and the ash can be discharged from the ash receiving groove 19, the ash can be automatically discharged while the combustion product W is automatically supplied. Driving becomes possible.

  In the heat exchanging section Sb, as shown in FIG. 3, in the state where the open / close door 57 provided in the partition wall separating the front chamber 50 and the rear chamber 54 is closed, the exhaust gas is separated from the front chamber 50, the descending smoke tube group 51, the middle The air is exhausted from the chimney 55 through the chamber 52, the rising smoke tube group 53, the rear chamber 54 and the cooling tower 58. In this process, heat exchange between the exhaust gas and water is performed in the heat exchange water tank 56 via the descending smoke tube group 51 and the ascending smoke tube group 53, and hot water is generated. In this case, since the exhaust gas is heat-exchanged through the descending smoke tube group 51 and the ascending smoke tube group 53, that is, the exhaust gas is folded up and down to perform heat exchange, the heat exchange efficiency is extremely good. In addition, since the cooling tower 58 through which the exhaust gas passes is provided between the rear chamber 54 and the chimney 55, the exhaust gas is cooled, so that deterioration of the exhaust blower 59 and the chimney 55 is suppressed.

  If necessary, as shown in FIG. 5, the open / close door 57 provided on the partition wall separating the front chamber 50 and the rear chamber 54 is opened. For example, when the temperature of the water in the heat exchange tank 56 rises and the water temperature sensor detects that the temperature has reached a set temperature (for example, 70 ° C. to 80 ° C.), the open / close door 57 is opened and the water in the heat exchange tank 56 is boiled. So that the temperature can be maintained at a constant level. The control by the open / close door 57 is very responsive compared to the combustion control on the combustion chamber side, and the hot water control becomes easy. In this case, the cooling door 58a of the cooling tower 58 is opened to cool the exhaust gas. For example, when the open / close door 57 is opened, exhaust gas of 800 ° C. to 900 ° C. is released, and if left as it is, the exhaust blower 59 is likely to be damaged, but outside air is introduced by opening the cooling door 58a, for example, 80 ° C. of exhaust gas. The temperature can be lowered to about ˜120 ° C., thereby protecting the discharge blower 59.

DESCRIPTION OF SYMBOLS S Incinerator Sa Incineration part Sb Heat exchange part W Combustion thing 1 Combustion tower 2 Primary combustion chamber 3 Secondary combustion chamber 4 Cover member 5 Air chamber 6 Lower side wall part 7 Upper side wall part 8 Partition 9 Partition 10 Intake blower 11 1st air Chamber 12 Second air chamber 13 Third air chamber 14 Air tube 15 Front wall 16 Rear wall 17 Side wall 18 Ash discharge opening 19 Ash receiving groove 20 Partition wall 20a Gas passage port 21 Discharge port 22 Tube 23 Ignition burner 24 Flue tube 25 Air outlet 26 Air outlet 27 Air outlet 30 Cylindrical body 31 Ignition burner 32 Air outlet 35 Cylindrical body air supply part 36 Screw conveyor 37 Electric motor 40 Input port 41 Combustion conveyance part 42 Hopper 43 Passing pipe 44 Screw conveyor 45 Electric motor 50 Front chamber 51 Descent smoke tube group 52 Intermediate chamber 53 Rising smoke tube group 54 Rear chamber 55 Chimney 56 Heat exchange water tank 57 Opening / closing door 58 Cooling tower 58 Cooling door 59 exhaust blower 60 water expansion chamber 61 conduit

Claims (13)

A primary combustion chamber for burning the charged combusted material when the combusted material is charged and air is introduced, and a combustion gas from the primary combustion chamber that is provided continuously above the primary combustion chamber and burns In an incinerator equipped with a combustion tower having a secondary combustion chamber for exhausting,
A cylindrical body that is provided in the primary combustion chamber across the primary combustion chamber and is heated to ignite the combusted material in the primary combustion chamber, and a flame is emitted into the cylindrical body to heat the cylindrical body. An incinerator characterized by comprising an ignition burner.   A cylindrical body air supply section for supplying air into the cylindrical body is provided, and a plurality of air outlets are provided along the longitudinal direction of the cylindrical body at least on the lower side of the cylindrical body. The incinerator according to claim 1. The lower side wall portion on the lower side of the combustion tower constituting the primary combustion chamber is configured to include a front wall, a rear wall, and a pair of side walls, and the pair of side walls gradually approach each other from the upper side to the lower side. An ash discharge opening is formed between the lower ends of the pair of side walls so that ash is discharged in the front-rear direction, and a bowl-like shape is provided below the ash discharge opening so as to receive the ash. Ash receiving groove of
The tubular body is provided between the front wall and the rear wall,
A screw conveyor is disposed in the ash receiving groove to convey ash to either the front wall or the rear wall,
Provided on the upper side wall of the upper side of the combustion tower constituting the primary combustion chamber is an inlet that is positioned higher than the cylindrical body and into which the combustible material is introduced, and the combustible material is conveyed to the inlet and is introduced. The incinerator according to claim 1 or 2, further comprising a combustible material conveying unit that is introduced into the primary combustion chamber through a mouth.   The combustible material conveying unit is provided outside the combustion tower and stores the combustible material, a passage tube provided between the outlet of the hopper and the input port, through which the combustible material passes, and provided in the passage tube. The incinerator according to claim 3, further comprising a screw conveyor configured to convey a combustion product from the hopper to the charging port.   The incineration according to claim 3 or 4, wherein a plurality of air outlets for blowing air from outside into the primary combustion chamber are provided in a lower side wall portion on the lower side of the combustion tower constituting the primary combustion chamber. apparatus.   A partition wall for partitioning the primary combustion chamber and the secondary combustion chamber is provided, and a plurality of gas passage ports through which the combustion gas of the primary combustion chamber can pass are formed in the partition wall, and the plurality of gas passage ports are connected to the second combustion chamber. The incinerator according to any one of claims 1 to 5, wherein the incinerator is formed with an axis inclined so that the combustion gas is ejected as a swirling flow into the next combustion chamber.   An exhaust port for exhausting exhaust gas from the secondary combustion chamber is provided in the upper part of the combustion tower constituting the secondary combustion chamber, and a pipe body communicating with the exhaust port is suspended from the exhaust port into the secondary combustion chamber The incinerator according to any one of claims 1 to 6, wherein   The incinerator according to claim 6 or 7, wherein a plurality of air outlets for blowing air from outside into the secondary combustion chamber are provided in a wall portion of the combustion tower constituting the secondary combustion chamber.   The incinerator according to any one of claims 1 to 8, further comprising a heat exchanging unit that exchanges heat between the exhaust gas from the secondary combustion chamber and water.   The heat exchange section includes a front chamber in which exhaust gas from the secondary combustion chamber is collected, a number of descending smoke tube groups that are provided below the front chamber and in which the exhaust gas in the front chamber descends, and the descending smoke tube group An intermediate chamber in which exhaust gas from the descending smoke tube group is gathered below, a number of rising smoke tube groups provided in the upper side of the intermediate chamber in which exhaust gas in the intermediate chamber rises, and an upper side of the rising smoke tube group A rear chamber which is provided adjacent to the front chamber with a partition wall and in which exhaust gas from the rising smoke pipe group is collected, a chimney connected to the rear chamber and exhausting exhaust gas from the rear chamber, and It is characterized by comprising a heat exchange water tank that surrounds the descending smoke tube group and the rising smoke tube group, stores water, and performs heat exchange between exhaust gas and water through the descending smoke tube group and the rising smoke tube group. The incinerator according to claim 9.   The incinerator according to claim 10, wherein an opening / closing door is provided in the partition wall separating the front chamber and the rear chamber to open and close the partition wall and allow the exhaust gas in the front chamber to directly flow into the rear chamber.   The incinerator according to claim 11, wherein a cooling tower through which exhaust gas passes is provided between the rear chamber and the chimney.   A temperature sensor for measuring the temperature in the primary combustion chamber, and when the temperature by the temperature sensor falls below a predetermined lower limit temperature, the ignition burner is actuated so that the temperature by the temperature sensor exceeds a predetermined upper limit temperature; The incinerator according to any one of claims 1 to 12, further comprising an ignition burner control unit that stops the ignition burner.

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