JP5764113B2 - Rice husk carbonization equipment - Google Patents

Description

  The present invention relates to a rice husk carbonization apparatus that burns and carbonizes rice husk generated in a grain storage facility such as a country elevator that dries and stores grains such as rice or wheat.

  Conventionally, in a grain storage facility such as a country elevator, received ginger is primarily stored in a plurality of storage bins, and then the ginger is taken out from each storage bin and dried in a koji dryer. Are stored in silos. And in the preparation parts, such as a rice huller, the dried rice cake taken out from the silo is made into brown rice and then packed and shipped (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 4-200748 JP-A-5-229667

  By the way, in a straw dryer installed in this kind of grain storage facility, kerosene, heavy oil or electric power is generally used for drying ginger. For this reason, depending on the price of kerosene, heavy oil, or electric power, there was a problem that the drying cost and the running cost of the grain storage facility increased. In addition, the energy consumption due to the use of kerosene, heavy oil, or electric power tends to increase, resulting in a large environmental load.

  Moreover, as rice husk dryers, rice husk carbonizers using rice husks as fuel are known (see, for example, FIG. 5 of JP-A-10-259992). The rice husk carbonizer heats the rice husk and carbonizes it, and dries the ginger with the combustion exhaust gas generated by heating and carbonizing the rice husk.

  However, the conventional rice husk carbonization apparatus is often of the rotary kiln type, and in that case, a mechanism for rotating a horizontal cylinder is required. In addition, since the rice husk moves along the bottom of the slightly inclined cylinder while being stirred by the rotation of the cylinder, a difference in the degree of heating tends to appear between the surface side and the inner side of the rice husk that is put in a lump. There is also a problem that it is difficult to uniformly burn unless the length is long.

  Therefore, the present invention has a technical problem to improve such a current situation.

To solve this technical problem, a first aspect of the invention, prepared portion and shipment of the grain storage facility to ship the brown rice was made dry paddy storage dried raw rice was consignee tone (CE) ( 34) In the rice husk carbonizer that carries the rice husk generated in (34) via the rice husk warehouse (57) and burns and carbonizes it to produce rice husk charcoal and combustion exhaust gas, the rice husk is formed at one end of the cylindrical furnace body (93). While providing the supply part (90) and the ignition burner (95), the other end side of the furnace body (93) is provided with an exhaust part (96) for discharging combustion exhaust gas of rice husks, and the furnace body (93) a concentric double-walled structure consisting of circular cylindrical inner wall (100) and a circular cylindrical outer wall (99), said inner wall (100) and said outer wall (99) and the distribution channel between the air ( 104) and a compound for forming a swirling flow of air on the peripheral wall of the inner wall (100). When the rice husk is configured to burn and carbonize while spirally moving along the inner periphery of the inner wall (100) in a swirling flow of air, the air holes (101) are provided. 101) opens in a direction inclined toward the exhaust part (96) by a predetermined angle (θ1) with respect to a virtual line (V1) orthogonal to the longitudinal center line of the inner wall (100), and the inner wall The exhaust section (96) opens in a direction inclined by a predetermined angle (θ2) with respect to a virtual line (V2) connecting the cross-sectional center of (100) and the inlet side of each air hole (101). , the furnace body so as to the opposing an ignition burner (95) provided on one side surface (93), and located in the central portion of the furnace other side portion of the main body (93), the other side surface portion and more projects, da flue gas from the exhaust portion (96) Winder (72) is that is configured to supply to the paddy dryer (14) of the grain storage facility (CE) via.

According to chaff carbonization apparatus according to the present invention, chaff generated in the preparation unit and shipment of the grain storage facility to ship the brown rice was made dry paddy storage dried raw rice was consignee tone (CE) (34) In the rice husk carbonization apparatus for carrying rice cake via the rice husk storage (57) and burning and carbonizing to produce rice husk charcoal and combustion exhaust gas, the rice husk supply section (90) and while having an ignition burner (95), to the other end of the furnace body (93) provided with an exhaust portion for discharging the combustion exhaust gas of the chaff (96), said furnace body (93) is a circular cylindrical inner wall ( 100) and a concentric double-walled structure consisting of a circular cylindrical outer wall (99), between said inner wall (100) and said outer wall (99) and distribution channels air (104), said inner wall A plurality of air holes for forming a swirling flow of air in the peripheral wall of (100) ( 01), and the rice husk is configured to burn and carbonize while spirally moving along the inner circumference of the inner wall (100) in a swirling flow of air, the air holes (101) The inner wall (100) opens in a direction inclined toward the exhaust part (96) by a predetermined angle (θ1) with respect to a virtual line (V1) orthogonal to the longitudinal center line of the inner wall (100), and the inner wall (100) Opening in a direction inclined by a predetermined angle (θ2) with respect to a virtual line (V2) connecting the center of the cross section and the inlet side of each air hole (101), the exhaust part (96) is the furnace body as the opposing an ignition burner (95) provided on one side surface (93), and located in the central portion of the furnace other side portion of the main body (93) protrudes from the other side surface portion The combustion exhaust gas from the exhaust part (96) is supplied to the duct device (7 ) Through the grain storage facility (CE) so as to be fed to the cocoon dryer (14), the furnace body (93) is shortened while the overall length of the furnace body (93) is shortened. The time during which the rice husk stays can be lengthened, and the rice husk can be reliably burned and carbonized.

  Moreover, since the rice husk is burned to generate high-temperature combustion exhaust gas, it is not necessary to use the ignition burner (95) continuously. Therefore, the consumption of conventional fossil fuels can be remarkably reduced, and the drying cost can be kept low. Further, each air hole (101) is directed in a direction inclined toward the exhaust part (96) by a predetermined angle (θ1) with respect to a virtual line (V1) perpendicular to the longitudinal center line of the inner wall (100). And opens in a direction inclined by a predetermined angle (θ2) with respect to a virtual line (V2) connecting the cross-sectional center of the inner wall (100) and the inlet side of each air hole (101). Therefore, a swirl flow toward the exhaust part (96) can be formed by blowing air from the air holes (101) to the inner peripheral surface of the inner wall (100). In other words, while effectively utilizing the shape of the inner peripheral surface of the inner wall (100), it is possible to make a swirl flow with a fast swirl speed without significantly reducing the blowing speed from each air hole (101). Therefore, the effect that it contributes to the improvement of the combustion efficiency of rice husk is produced.

It is a plane explanatory view of a country elevator. It is process explanatory drawing of a country elevator. It is a front view of a cocoon dryer and a hot air supply apparatus. It is process explanatory drawing of a hot air supply apparatus. It is a front view of a carbonization furnace. It is a side view of a carbonization furnace. It is a VII-VII sectional view taken on the line of FIG. It is a VIII-VIII sectional view taken on the line of FIG. It is a functional block diagram of a controller. It is a flowchart of supply amount control. It is a flowchart of drive switching control.

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

(1). First, an overview of a country elevator CE, which is an example of a grain storage facility, will be described with reference to FIGS. 1 and 2.

  The country elevator CE includes a building BG having a cargo receiving unit 1, a preparation unit / shipping unit 34, a self-inspection room 53, an office room 54, and an operation room 55. In the embodiment, the cargo receiving unit 1 and the preparation unit / shipping unit 34 are installed on one side of the building BG. An office room 54 and an operation room 55 are installed on the side of the cargo receiving unit 1. A self-inspection room 53 is installed on the back side of the office room 54. Further, the building BG is provided with a drying unit 10 and a storage unit 22, and a wet dust removing device 56, a rice husk storage 57, and a hot air supply device 70 are provided outside the building BG. In the embodiment, the storage unit 22 is installed on the back side of the preparation unit / shipping unit 34, and the drying unit 10, the wet dust removal device 56, and the hot air supply device are disposed on the opposite side of the self-inspection chamber 53 across the storage unit 22. 70 and rice husk storage 57 are installed.

  The load receiving unit 1 is a facility for receiving a ginger that is received by individual and by a loading port, and includes a coarse selection machine 5, a load receiving weighing machine 6, and a plurality of storage bins 9. The coarse sorter 5 removes impurities from the ginger that is carried from the load receiving hopper 2 via the load receiving conveyor 3 and the load receiving elevator 4. Measures the weight of the consignment and the amount of water. The storage bin 9 group temporarily stores the ginger that is carried from the load receiving weighing machine 6 through the bin loading elevator 7 and the top conveyor 8 before drying. The storage bin 9 group of the embodiment is installed on the back side of the operation chamber 55 and between the self-inspection chamber 53 and the storage unit 22.

  The drying unit 10 is a facility for drying the ginger after receiving the cargo while drying and temporarily suspending it while making the moisture in the grains uniform and preventing torso cracking. A plurality of secondary silos 19 as tempering tanks and a drying silo take-out elevator 21 are provided. The cocoon dryer 14 reduces the moisture content of the ginger carried from each storage bin 9 through the bottom conveyor 11, the bin discharge elevator 12, the dryer input elevator 13 and the dryer input conveyor 15a to a predetermined percentage or less (dried). ) The auxiliary silo 19 group carries the temporarily-dried suspension paddle taken out from the paddle dryer 14 via the dryer take-out conveyor 15b, the relay elevator 16, the drying silo loading elevator 17 and the drying silo loading conveyor 18, and temporarily suspends them. Is. The dry silo take-out elevator 21 retransmits the semi-dry soot taken out from each sub silo 19 to the soot dryer 14 via the dry silo take-out conveyor 20. The dried soot dried in the drying unit 10 is then sent out to the storage unit 22.

  The storage unit 22 includes a plurality of main silos 23 that are storage silos, a selection machine 26, an adjustment tank 30, a dewaxing machine 31, and a selection silo charging elevator 33. The main silo 23 group carries the dried rice cake from the drying unit 10 through the dryer take-out conveyor 15b, the relay elevator 16, the drying silo charging elevator 17 and the drying silo charging conveyor 18 and stores them for a long time. The sorting machine 26 separates and removes impurities in the dried soot introduced from each main silo 23 via the sorting silo take-out conveyor 24 and the sorting machine loading elevator 25. In the adjustment tank 30, the refined culm or pulverized rice taken out from the clarifier 26 is fed through a sales weighing machine 27 and a clarifier take-out elevator 28 or detached rice elevator 29. The detaching machine 31 is used for detaching the tacked potatoes taken out from the selective machine 26. The finely selected rice cake after the sales weighing is carried into each main silo 23 via the finely selected silo loading elevator 33 and the finely selected silo loading conveyor 32. The finely selected rice cake in the adjustment tank 30 is sent to the preparation / shipping unit 34 in the next process.

  The preparation unit / shipping unit 34 includes a rice huller 36, a rocking sorter 38, a stone remover 42, a grain sorter 41, a shipping tank 45 for a flexible container 44, a packaging shipping tank 46, an immature rice tank 48 and a white rice tank. 52. The huller 36 removes the finely selected rice cake that has been carried in from the adjustment tank 30 via the hail lift 35. The swing sorter 38 takes out only the good brown rice from the pulverized mixed rice that has passed through the rice huller 36 and the mixed rice elevator 37. The stone remover 42 removes stone from the brown rice that has passed through the swing sorter 38, the vibration conveyor 39, and the brown rice elevator 40. The grain sorter 41 sorts the unpolished rice after removing stones into those of predetermined particles. The unpolished rice after stone removal and grain selection is put into the shipping tank 45 for the flexible container 44 and the packaging shipping tank 46 via the unpolished rice elevator 43. The immature rice taken out from the grain sorter 41 is carried into the immature rice tank 48 via the immature rice elevator 47 and the deflated rice elevator 29. In the white rice tank 52, the good brown rice from the good brown rice elevator 43 is fed via the rice mill lift 49, the brown rice tank 50 and the rice mill 51.

  The wet dust removing device 56 installed outside the building BG collects and removes dust generated in the soot dryer 14 and is connected to the soot dryer 14 through a dust collecting duct 58. The rice husk storage 57 installed on the back side of the wet dust removing device 56 is for storing rice husk generated by the dehulling work of the hulling machine 36. The hot-air supply device 70 generates combustion exhaust gas by heating and carbonization of the rice husk stored in the rice husk warehouse 57, and the combustion exhaust gas is dried as a second heat source in the wood dryer 14 that is a thermal dryer. It is configured so that it can be supplied to the machine 14 and dried after receiving the goods.

(2). Next, the configuration of the soot dryer 14 will be described with reference to FIGS.

  As shown in detail in FIG. 3, the basket dryer 14 includes a square columnar drying cylinder 61 mounted on a support base 60, a hot air hood 62 attached to one outer surface of the drying cylinder 61, and a drying cylinder 61. Of these, an exhaust hood 63 attached to the opposite side of the hot air hood 63 is provided. Although not shown, the hot air hood 62 and the exhaust hood 63 communicate with the drying cylinder 61. The lower end side of the exhaust hood 63 is connected to the wet dust removing device 56 via the dust collection duct 58. At the upper part of the drying cylinder 61, the tip end side of the dryer charging conveyor 15a protruding from the building BG is arranged. At the lower part of the drying cylinder 61, the tip side of the dryer take-out conveyor 15b protruding from the building BG is arranged (see FIG. 4).

  Below the support base 61, two sets of burners 64 and blower fans 65 are arranged as heat source devices for generating hot air supplied into the drying cylinder 62. The blowing side of each blower fan 65 is connected to a blower duct 66 extending downward from the lower end side of the hot air hood 62. Inside the drying cylinder 62, a guide rod 67 having a bottom surface as a ventilation floor is arranged in a zigzag shape in which rhombuses are stacked in multiple stages. While the ginger or semi-dried rice cake that is introduced into the drying cylinder 61 from the dryer loading conveyor 15 a naturally falls along the guide rod 67, the ginger or semi-dried rice cake is exposed to hot air from the burner 64 and the blower fan 65. As a result, the water content of ginger or semi-dried rice cake is reduced (dried) to a predetermined percentage or less.

(3). Configuration and Operation Mode of Hot Air Supply Device Next, the configuration and operation mode of the hot air supply device 70 will be described with reference to FIGS.

  The hot air supply device 70 includes a rice husk carbonization device 71 that burns and carbonizes the rice husk generated in the preparation / shipping unit 34, and a duct device 72 that supplies the combustion exhaust gas from the rice husk carbonization device 71 to the wood dryer 14. It has. The rice husk carbonizer 71 is a rice husk storage tank 73 that temporarily retains the rice husk transferred from the rice husk storage 57, and a horizontally long cylinder that generates rice husk charcoal and combustion exhaust gas by heating and carbonizing the rice husk from the rice husk storage tank 73. A carbonized carbon furnace 74 and a coal removing device 75 that takes out the rice husk coal produced in the carbonized furnace 74 after lowering the temperature. The duct device 72 includes a hot air duct 76 that connects the carbonization furnace 74 and the blower fans 65 of the soot dryer 14, a hot air fan 77 disposed in the middle of the hot air duct 76, and a vertical cyclone dust collection as a relay means. Instrument 78.

  In the embodiment, a pedestal 79 is installed on the side of the wet dust removing device 56 and between the cocoon dryer 14 and the rice husk warehouse 57. A rice husk storage tank 73 and a cyclone dust collector 78 are mounted on the top surface of the gantry 57. A carbonization furnace 74 is installed below the rice husk storage tank 73. The charcoal extraction device 75 is installed through the top surface of the gantry 79 vertically (see FIG. 3).

  The rice husk storage 57 and the upper part of the rice husk storage tank 73 are connected to each other via a rice husk transfer duct 80. At the base end portion in the rice husk storage 57 of the rice husk transfer duct 80, a centrifugal rice husk transfer fan 81 and a charging hopper 82 for supplying rice husk are provided. By driving the rice husk transfer fan 81, the rice husk supplied to the charging hopper 82 is fed into the rice husk storage tank 73.

  A lock valve 83 that is opened and closed by a valve electric motor 84 is provided at the inlet of the charging hopper 82. The amount of rice husks thrown into the charging hopper 82 is adjusted by opening / closing the lock valve 83 by driving the valve electric motor 84. An upper limit level meter 85 that detects the upper limit of the amount of rice husk inside the rice husk storage tank 73 is attached to the upper part of the side surface of the rice husk storage tank 73. A lower limit level meter 86 that similarly detects the lower limit of the amount of rice husk inside is attached to the lower part of the side surface of the rice husk storage tank 73.

  At the bottom of the rice husk storage tank 73, a transfer feeder 87 that is transported and driven by a tank electric motor 88 is provided. The conveyance downstream side of the transfer feeder 87 is connected to a supply feeder 90 as a rice husk supply section provided in the carbonization furnace 74 via an introduction duct 89. The supply feeder 90 is configured to be transported by a supply electric motor 91. The rice husk in the rice husk storage tank 73 is introduced into the carbonization furnace 74 by the conveyance drive of the transfer feeder 87 and the supply feeder 90. A supply level meter 92 that detects the upper limit of the amount of rice husk in the supply feeder 90 is attached to the introduction duct 89.

  As shown in FIGS. 5 to 8, the horizontally long carbonization furnace 74 includes a furnace body 93 having a double wall structure, and a charcoal take-out feeder 94 as a carbide conveyor attached to the lower peripheral surface of the furnace body 93. It has. An ignition burner 95 for igniting rice husk is attached to one side surface of the furnace body 93. An exhaust portion 96 connected to the hot air duct 76 via the exhaust gas duct 97 is opened on the other side surface portion of the furnace body 93 so as to face the ignition burner 95. A supply feeder 90 as a rice husk supply unit is provided at a location near the ignition burner 95 in the peripheral surface portion of the furnace body 93. Note that one side portion of the furnace body 93 on the ignition burner 95 side is configured to be openable and closable via a hinge 98.

  The furnace body 93 has a concentric double wall structure including a horizontally long cylindrical inner wall 100 and a horizontally long cylindrical outer wall 99 surrounding the wall from the outside. For this reason, a space (a distribution path 104 described later) is vacant between the outer wall 99 and the inner wall 100. The inlet portions of the supply feeder 90, the ignition burner 95, and the charcoal extraction feeder 94 face the inner side of the inner wall 100, and all of them communicate with the space between the outer wall 99 and the inner wall 100 (distribution path 104). Not.

  As shown in FIGS. 7 and 8, the inner wall 100 is provided with a plurality of air holes 101 for forming a swirling flow of air therein. Each air hole 101 opens in a direction inclined by an angle θ1 as appropriate with respect to a virtual line V1 orthogonal to the longitudinal center line of the inner wall 100 (a direction inclined by about 10 ° in the embodiment) (see FIG. 7). ), And opens in a direction inclined by an angle θ2 as appropriate (a direction inclined by about 10 ° in the embodiment) with respect to a virtual line V2 connecting the cross-sectional center of the inner wall 100 and the inlet side of the air hole 101 ( (See FIG. 8).

  The combustion blower 102 disposed at the lower portion of the furnace body 93 is connected to the outer wall 99 via a trifurcated air duct 103. For this reason, combustion air is introduced into the space between the outer wall 99 and the inner wall 100 through the air duct 103 by driving the combustion blower 102. That is, the space between the outer wall 99 and the inner wall 100 serves as a combustion air circulation path 104. Combustion air sent from the combustion blower 102 to the flow path 104 blows out from the air holes 101 to the inner side of the inner wall 100, and the exhaust portion 96 from the ignition burner 95 side by the tilting action of the air holes 101 described above. Thus, a swirl flow SF that moves spirally along the inner side (inner circumference) of the inner wall 100 is formed.

  The rice husk introduced from the rice husk storage tank 73 into the inner wall 100 of the carbonization furnace 74 is ignited by the ignition burner 95 while being dispersed by the swirling flow SF by the combustion air from each air hole 101. The rice husk once started to burn is ignited by adjusting the introduction amount of the rice husk from the supply feeder 90 and the supply amount of combustion air from each air hole 101 without using the ignition burner 95 continuously. It burns and carbonizes while moving spirally along the swirl flow from the burner 95 side toward the exhaust part 96 (becomes rice husk charcoal). The rice husk charcoal falls on the charcoal extraction feeder 94 using the difference in specific gravity from the rice husk (self-weight of rice husk charcoal). The combustion exhaust gas generated by burning and carbonizing the rice husk is discharged from the exhaust part 96 toward the hot air duct 76 through the exhaust gas duct 97 by the action of the swirling flow SF itself and the suction action of the hot air fan 77. The temperature of the combustion exhaust gas in the embodiment is maintained around 700 ° C. Further, the rice husk continuously introduced into the inner wall 100 is burned with rice husk and rice husk charcoal that have been previously burned and carbonized in the inner wall 100. The amount of combustion air blown out from each air hole 101 is set to such an extent that rice husk charcoal generated in the inner wall 100 is difficult to be discharged from the exhaust part 96 together with the combustion exhaust gas.

  The charcoal extraction feeder 94 attached to the lower peripheral surface of the furnace body 93 is configured to be driven by an extraction electric motor 105 disposed below the furnace body 93. The downstream side of the coal extraction feeder 94 is connected to the lower side of the coal extraction elevator 106 constituting the coal extraction device 75.

  The charcoal extraction device 75 includes the charcoal extraction elevator 106 and the charcoal storage tank 107 described above. The upper side of the charcoal extraction elevator 106 is connected to the upper surface of the charcoal storage tank 107. The chaff husk charcoal dropped and deposited in the charcoal take-out feeder 94 is transported to the lower side of the charcoal take-out lift 106 by the transport drive of the charcoal take-out feeder 94 by the take-out electric motor 105, and It will be transported and collected in the charcoal storage tank 107. A charcoal level meter 108 for detecting the upper limit of the amount of rice husk charcoal inside the charcoal storage tank 107 is attached to the upper portion of the side surface of the charcoal storage tank 107.

  According to the configuration of the rice husk carbonizer 71 described above, a supply feeder 90 and an ignition burner 95 as a rice husk supply unit are provided on one end side of the cylindrical furnace body 93, while a rice husk is provided on the other end side of the furnace body 93. An exhaust part 96 for discharging combustion exhaust gas is provided, and a plurality of air holes 101 for forming a swirl flow of air are provided in the furnace main body 93, and the rice husk is formed in the furnace main body 93 by the swirl flow of air. Since it is configured to burn and carbonize while moving spirally along the inner periphery, it is possible to lengthen the time that the rice husk stays in the furnace body 93 while shortening the overall length of the furnace body 93. The rice husk can be burned and carbonized reliably.

  Moreover, since the rice husk is burned to generate high-temperature combustion exhaust gas, it is not necessary to use the ignition burner 95 continuously. Therefore, the consumption of conventional fossil fuels can be remarkably reduced, and the drying cost can be kept low. Moreover, since the outlet side of each air hole 101 is inclined toward the swirl downstream side so that the air blowing direction approaches the inner peripheral surface of the furnace body 93, the air from each air hole 101 is transferred to the furnace body. A swirling flow can be formed by spraying on the inner peripheral surface of 93. That is, while effectively utilizing the shape of the inner peripheral surface of the furnace body 93, it is possible to make the swirl flow at a high swirl speed without significantly reducing the blowing speed from each air hole 101. Therefore, the effect that it contributes to the improvement of the combustion efficiency of rice husk is produced. In addition, the lower part of the furnace body 93 is provided with a charcoal take-out feeder 94 as a carbide conveyor for collecting rice husk charcoal that has fallen by its own weight. For example, charcoal can be commercialized as a soil conditioner, nursery and horticultural material, a filter adsorbent, a deodorizing agent, and a humidity control agent. In addition, as shown in FIG. 8, the opening from the furnace body 93 to the carbide conveyor 94 is formed wider on the inlet side near the furnace body 93 when viewed from the longitudinal direction of the furnace body 93. It becomes easy to collect the rice husk charcoal produced in the main body 93 in the charcoal take-out feeder 94 as a carbide conveyor. It goes without saying that the rice husk can be made into kunchar or ash by adjusting the amount of rice husk introduced from the supply feeder 90 and the amount of combustion air blown out from each air hole 101.

  An ignition burner 95 on one end side of the furnace body 93 and an exhaust part 96 on the other end side are arranged to face each other, and a supply feeder 90 as a rice husk supply part is located at a location near the ignition burner 95 in the furnace body 93. Therefore, the length of the combustion chamber (inside the inner wall 100 in the embodiment) can be sufficiently secured by efficiently using the entire length of the furnace body 93 while making the furnace body 93 compact.

  In addition, the furnace body 93 has a double wall structure, and an air flow path 104 is formed between the outer wall 99 and the inner wall 100 in the furnace body 93, and a plurality of air holes 101 are provided in the inner wall 100. Therefore, there is an advantage that it is easy to form a swirling flow while having a simple structure.

  As shown in FIGS. 3 and 4, in the duct device 72, outside air introduction means for adjusting the temperature by mixing the outside air with the combustion exhaust gas at the inlet side of the hot air duct 76 (between the carbonization furnace 74 and the hot air fan 77). As an outside air introduction duct 109 is provided. On the inlet side of the hot air duct 76, due to the suction action of the hot air fan 77, the outside air is taken in through the outside air introduction duct 109 and mixed with the combustion exhaust gas, and the temperature is lowered to a temperature suitable for drying the ginger (ginger It becomes a mixed gas at a temperature suitable for drying). The temperature of the mixed gas in the embodiment is maintained at about 33 ° C.

  The cooled mixed gas is sent to the upper part of the cyclone dust collector 78 by driving the hot air fan 77. In the cyclone dust collector 78, the mixed gas and the dust (fine husk husk charcoal) in the mixture are separated vertically, and a clean mixed gas from which dust is removed (hereinafter referred to as a clean mixed gas) The air is sent toward both the blower fans 65. Although not shown, the lower part of the cyclone dust collector 78 is connected to the lower side of the charcoal extraction elevator 106 via a return duct, and dust (fine rice husk charcoal separated and removed from the mixed gas). ) Is returned to the charcoal take-out elevator 106 and is transported and collected in the charcoal storage tank 107.

  The downstream side of the hot air duct 76 is branched into two forks, and each of the two branch duct portions 76 a and 76 b is connected to the blower fan 65. Therefore, instead of the hot air from the burner 64 and the blower fan 65, the clean mixed gas from the hot air supply device 70 can be supplied into the soot dryer 14.

  Air flow dampers 110a to 110c as damper means are disposed at least at two locations on the upstream side and downstream side of the hot air duct 76. The first air volume damper 110a is provided at the upper end portion of the cyclone dust collector 78 and is configured to be opened and closed by the first damper electric motor 111a. When the first air volume damper 110a is in an open state, the portion of the hot air duct 76 communicates with the outside. The first damper electric motor 111a is driven based on the detection information of the temperature sensor 112, which is a temperature detection means in the cocoon dryer 14, so that the first air volume damper 110a opens and closes, and the cocoon dryer 14 is cleaned. The supply amount of the mixed gas is adjusted.

  The second air volume damper 110b is provided in one branch duct portion 76a, and is configured to be opened and closed by the second damper electric motor 111b. The third air volume damper 110c is provided in the other branch duct portion 76b, and is configured to be opened and closed by the third damper electric motor 111c. When the second and third air volume dampers 110b and 110c are closed, communication between the corresponding branch duct portions 76a and 76b and the soot dryer 14 is blocked.

  As shown in FIG. 1, a control box 115 is disposed in the vicinity of the carbonization furnace 74. One side of the control box 115 is a door that can be opened and closed. In the control box 115, a display unit such as a liquid crystal monitor, various operation switches, an alarm buzzer, a controller 116 as a control means, and the like are arranged. . The controller 116 mainly governs drive control of the hot air supply device 70.

  Although not shown, the controller 116 includes a CPU for executing various arithmetic processes and controls, a ROM for storing control programs and data, a RAM for temporarily storing control programs and data, and an input / output interface. Etc. The controller 116 includes two sets of a burner 64 and a blower fan 65 as heat source devices, a hot air fan 77 of the hot air supply device 70, a rice husk transfer fan 81, an electric motor 84 for the valve, an upper limit level meter 85, a lower limit level meter 86, and a tank. Electric motor 88, supply electric motor 91, supply level meter 92, ignition burner 95, combustion blower 102, take-out electric motor 105, charcoal level meter 108, electric motors 111a to 111c for each damper, temperature sensor 112, etc. Are electrically connected (see FIG. 9).

  The controller 116 is configured to be able to execute supply amount control of the clean mixed gas from the hot air supply device 70 toward the soot dryer 14. In this case, as shown in the flowchart of FIG. 10, when the temperature T in the cocoon dryer 14 detected by the temperature sensor 112 is higher than the set upper limit temperature TU when the ginger or semi-dried cocoon is dried, the first By driving the damper electric motor 111a, the first air volume damper 110a is completely opened to release the clean mixed gas to the outside, and the supply amount of the clean mixed gas to the soot dryer 14 is decreased. On the contrary, when the temperature T in the paddy dryer 14 is lower than the set lower limit temperature TD, the first air volume damper 110a is completely closed by driving the electric motor 111a for the first damper to clean the paddy dryer 14 The supply amount of the mixed gas is increased.

  As described above, in the embodiment, the supply amount of the clean mixed gas to the cocoon dryer 14 is adjusted by opening and closing the first air volume damper 110a according to the temperature T in the cocoon dryer 14, so the hot air supply device The combustion exhaust gas from 70 can be effectively used as a heat source for the soot dryer 14, which can contribute to a reduction in drying costs.

  Further, in the embodiment, two sets of driving of the burner 64 and the blower fan 65 that are heat source devices and driving of the hot air supply device 70 can be switched and stopped by operating a switch in the operation chamber 55. It has become. These drive switching operations are performed by the controller 116 in the control box 115. In this case, as shown in the flowchart of FIG. 11, when two sets of operation of the burner 64 and the blower fan 65 are started by operating the switch in the operation chamber 55, the second and third damper electric motors 111 b, The second and third air volume dampers 110b and 110c are completely closed by driving 111c, and the communication between the branch duct portions 76a and 76b and the soot dryer 14 is blocked.

  As described above, in the embodiment, when the two sets of the burner 64 and the blower fan 65 are driven, the controller 116 closes the second and third air volume dampers 110b and 110c, so even when the hot air supply device is not used. The hot air from the burner 64 and the blower fan 65 does not flow back to the branch duct portions 76a and 76b, and consequently the hot air duct 76, and the hot air from the burner 64 and the blower fan 65 can be stably supplied to the soot dryer 14.

  As is clear from the above configuration, in the country elevator CE of the embodiment, the rice husk carbonizer 71 that burns and carbonizes the rice husk generated in the preparation unit / shipping unit 34, and the combustion exhaust gas from the rice husk carbonizer 71 is a drying unit 10 is provided with a hot-air supply device 70 having a duct device 72 for supplying to the rice bran dryer 14 disposed in 10, so that rice husk charcoal is generated in the rice husk carbonizer 71 and combustion exhaust gas is generated. Is possible. For this reason, combustion exhaust gas can be utilized as a heat source for the paddy dryer 14, and drying of ginger and semi-dried paddy can be performed without consuming a large amount of fossil fuel as in the prior art. Therefore, it is easy to reduce the drying cost. In addition, environmental pollution caused by incineration or disposal of rice husks can be prevented. In addition, the hot air supply device 70 according to the embodiment can be easily retrofitted to the existing dryer 14 of the country elevator CE.

Furthermore, in the embodiment, the rice husk storage 57 for storing rice husk is provided, and the rice husk in the rice husk storage 57 is transported to the rice husk carbonization apparatus 71 to generate rice husk charcoal and combustion exhaust gas. for example if keep the chaff generated in the paddy tone made that consignee in previous year chaff box 57, facilitate flue gas required for the first goods receptacle paddy drying in the combustion and carbonization of rice husk year min Is obtained. That is, the rice husk of the previous year stored in the rice husk warehouse 57 can be effectively used as a heat source for drying the cargo receiving basket. In addition, since the rice husks need not be separately transported to, for example, a carbonization facility, an incineration facility, or a disposal site, such transportation work can be omitted.

  Moreover, the soot dryer 14 has two sets of a burner 64 and a blower fan 65 as heat source devices that generate a heat source different from the combustion exhaust gas, and these and the hot air supply device 70 are switchable. Therefore, even if there is no rice husk required for drying the first cargo receiving basket, the operation of the basket dryer 14 can be easily started by switching and driving the two sets of the burner 64 and the blower fan 65.

(4). Others The present invention is not limited to the above-described embodiment, and can be embodied in various forms. The configuration of each part is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

CE Country Elevator 1 Cargo receiving unit 10 Drying unit 14 Coffee dryer 22 Storage unit 34 Preparation unit / shipping unit 55 Operation room 57 Rice husk 61 Drying cylinder 64 Burner 65 Blower fan 66 Air duct 70 Hot air supply device 71 Rice husk carbonizer 72 Duct device 73 Rice husk storage tank 74 Carbonization furnace 75 Charcoal extraction device 76 Hot air duct 77 Hot air fan 90 Supply feeder 93 Furnace body 94 Charcoal extraction feeder 95 Ignition burner 96 Exhaust part 99 Outer wall 100 Inner wall 101 Air hole 102 Combustion blower 104 Distribution path 109 Outside air introduction ducts 110a to 110c Airflow dampers 111a to 111c Damper electric motor 112 Temperature sensor 116 Controller

Claims (1)

The chaff generated in the preparation unit and shipment of the grain storage facility to ship the brown rice was made dry paddy storage dried raw rice was consignee tone (CE) (34), carry-over chaff boxes (57) In the rice husk carbonizer that generates the rice husk charcoal and combustion exhaust gas by combustion and carbonization,
A cylindrical furnace main body (93) is provided with a rice husk supply part (90) and an ignition burner (95) on one end side, while the other end side of the furnace main body (93) is an exhaust part for discharging combustion exhaust gas of rice husk ( with 96), said furnace body (93), the circularly cylindrical inner wall (100) is a concentric double-walled structure consisting of a circular cylindrical outer wall (99), said inner wall (100) The air flow path (104) between the outer wall (99) and the inner wall (100) is provided with a plurality of air holes (101) for forming a swirling flow of air,
When the rice husk is configured to burn and carbonize while spirally moving along the inner circumference of the inner wall (100) in a swirling flow of air, the air holes (101) are formed in the inner wall (100). Opening toward a direction inclined toward the exhaust part (96) by a predetermined angle (θ1) with respect to a virtual line (V1) orthogonal to the longitudinal center line of the inner wall (100), and the cross-sectional center of the inner wall (100) Opening toward a direction inclined by a predetermined angle (θ2) with respect to a virtual line (V2) connecting the inlet side of the air hole (101),
The exhaust unit (96), said furnace body so as to the opposing an ignition burner (95) provided on one side surface (93), located in the central portion of the furnace other side portion of the main body (93) And projecting from the other side surface portion, and configured to supply the combustion exhaust gas from the exhaust portion (96) to the straw dryer (14) of the grain storage facility (CE) via a duct device (72). doing,
Rice husk carbonization equipment.

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