JP2005349831A - Manufacturing method of rpf and manufacturing apparatus for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an RPF (recycled plastic fuel) enabling to make a calorific value uniform. <P>SOLUTION: Waste paper and a waste plastic are separately fed by shifting a time and crushed separately, a material of the crushed waste paper pieces and that of a crushed waste plastic pieces are respectively detected by irradiating a near infrared ray to the crushed waste paper pieces and crushed waste plastic pieces under carrying them, at the same time, each of the calorific values is respectively calculated by multiplying an inherent calorific value of the material to a number of the said crushed waste paper pieces the material of which is detected and a number of the said crushed waste plastic pieces the material of which is detected, the crushed waste paper pieces and the crushed waste plastic pieces are stored separately and mixed in a ratio corresponding to a desired calorific value according to a ratio based on the said calorific value calculated before are fed, extruded and molded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing RPF (Refuse Paper & Plastic Fuel) obtained by extruding a mixture of waste paper and waste plastic, and a manufacturing facility therefor.

  RPF is used as an alternative to fossil fuels for kilns for cement firing, coke for blast furnace injection, fuel for boilers and dryers, etc. The calorific value and ash content of waste paper and waste plastics are as shown in Table 1. Varies depending on the mixing ratio.

  Conventionally, in the production of RPF, mixing of waste paper and waste plastic is performed depending on the intuition of workers in the raw material yard.

  However, in the conventional RPF manufacturing method, the mixing ratio of waste paper and waste plastic varies, and there is a problem in that the amount of heat generated varies from product to product, especially when viewed over a short span.

  Then, this invention makes it a subject to provide the manufacturing method and its manufacturing equipment of RPF which can make calorific value more uniform.

  In order to solve the above-described problems, the first RPF manufacturing method of the present invention supplies waste paper and waste plastic separately at different times and crushed them separately. The materials of the waste paper shredded pieces and the waste plastic shredded pieces are separately detected by irradiating with infrared rays, and the number of the waste paper shredded pieces and the waste plastic shredded pieces detected by the material are multiplied by the calorific value specific to the material, respectively. After calculating the calorific value separately, the waste paper crushed pieces and the waste plastic crushed pieces are stored separately, and mixed and supplied at a ratio corresponding to the desired calorific value based on the calculated calorific value, and extrusion molding. It is characterized by doing.

  In the second RPF manufacturing method, waste paper and waste plastic are separately supplied and crushed separately, and the waste paper crushed pieces and waste plastic crushed pieces are irradiated with near infrared rays while being transported. After separately detecting the material of the waste plastic crushed pieces, and calculating the amount of generated heat separately by multiplying the number of the waste paper crushed pieces and the number of waste plastic crushed pieces detected by the material, The crushed pieces and the waste plastic crushed pieces are separately stored, mixed and supplied at a ratio corresponding to a desired calorific value based on the calculated calorific value, and extruded.

  In the first or second method, the third RPF production method detects the material separately when mixing and feeding the waste paper shredded pieces and the waste plastic shredded pieces, and the chlorine content thereof is determined. It is calculated separately.

  The fourth RPF manufacturing method is the first, second or third method, wherein the temperature at the time of the extrusion molding is measured, and the waste paper shredded pieces and the waste are made so that the molding temperature becomes a required value. It is characterized by controlling the supply amount of plastic fragments.

  The fifth RPF manufacturing method supplies waste paper and waste plastic separately at the same time, crushes them together, and irradiates the mixture of waste paper shattered pieces and waste plastic shredded pieces with near-infrared rays during transportation, thereby making the material of the mixture And the calorific value specific to the material is calculated by multiplying the number of waste paper crushing pieces and waste plastic crushing pieces of the mixture whose material is detected, and then calculating the respective calorific value, and then the desired calorific value based on the calorific value calculated. The ratio of the supplied amount of the used paper and the waste plastic is controlled so as to correspond to the above, while the mixture of the used paper crushed pieces and the waste plastic crushed pieces is stored and supplied and extruded.

  The sixth RPF manufacturing method is characterized in that, in the fifth method, the material is detected and the chlorine content is calculated when supplying the mixture of the waste paper fragment and the waste plastic fragment. To do.

  A seventh RPF manufacturing method is the fifth or sixth method, wherein the temperature at the time of the extrusion molding is measured, and the waste paper shredded pieces and the waste plastic shredded pieces so that the molding temperature becomes a required value. The amount of the mixture fed is controlled.

  The eighth RPF manufacturing method is the first, second, third, fourth, fifth, sixth or seventh method, wherein the moisture content of the extruded molded product is measured and molded. The water content of the mixture of the waste paper shredded pieces and the waste plastic shredded pieces is controlled so that the water content of the product becomes a required value.

  On the other hand, the first RPF manufacturing facility includes a supply conveyor for supplying waste paper or waste plastic, a crusher for crushing waste paper or waste plastic supplied from the supply conveyor, and a material for waste paper shredded pieces discharged from the crusher. The first material detector for detecting the amount of waste paper, the second material detector for detecting the material of the waste plastic fragment discharged from the crusher, and the calorific value of the waste paper fragment based on the detection result of the first material detector The first calorific value calculating means for calculating, the second calorific value calculating means for calculating the calorific value of the waste plastic fragment based on the detection result of the second material detector, and the material detected by the first material detector. A first supply machine with variable supply amount for storing and supplying waste paper fragments, and a second supply machine with variable supply amount for storing and supplying waste plastic fragments whose material has been detected by the second material detector, 1st, 1st The ratio of the supply amount of the feeder is controlled by the ratio control means for controlling the ratio of the supply amount so as to correspond to a desired heat generation amount based on the heat generation amounts calculated by the first and second heat generation amount calculation means. A molding machine for extruding a mixture of waste paper shredded pieces and waste plastic shredded pieces supplied from the first and second feeders, wherein the first material detector and the second material detector are the crusher The waste paper shredded piece or the waste plastic shredded piece being discharged from the container is irradiated with near infrared rays, the material of the waste paper shredded piece or the waste plastic shredded piece is detected, and the first calorific value calculating means and the first 2. The calorific value calculating means calculates the calorific value by multiplying the number of the used paper crushing pieces or waste plastic crushing pieces whose material has been detected by the calorific value specific to the material.

  The second RPF production facility includes a first supply conveyor that supplies waste paper, a second supply conveyor that supplies waste plastic, a first crusher that crushes waste paper supplied from the first supply conveyor, and a second A second crusher that crushes waste plastic supplied from the supply conveyor, a first material detector that detects the material of the waste paper crusher discharged from the first crusher, and waste plastic that is discharged from the second crusher A second material detector for detecting the material of the crushed pieces, a first calorific value calculating means for calculating the calorific value of the used paper crushed pieces based on the detection results of the first material detector, and the detection results of the second material detector A second calorific value calculation means for calculating the calorific value of the waste plastic crushed pieces based on the above, and a first supply machine with variable supply amount for storing and supplying the waste paper crushed pieces whose material is detected by the first material detector; By the second material detector The ratio of the supply amount of the supply amount variable and the supply amount of the first and second supply devices is stored by the first and second calorific value calculation means. Ratio control means for controlling the calorific value so as to correspond to a desired calorific value based on the calculated calorific value, and waste paper crushed pieces and waste plastic crushed pieces controlled by the ratio control means and supplied from the first and second feeders A molding machine for extruding the mixture of the first material detector and the second material detector, wherein the first material detector and the second material detector are discharged from the crusher and conveyed to the waste paper crushing piece or the waste plastic crushing piece near infrared. And the first calorific value calculating means and the second calorific value calculating means are configured to detect the used paper crushed piece or the waste plastic crushed piece. The number of ticks fragments, and calculating the respective calorific value by multiplying the material specific heat value.

  The third RPF production facility is supplied from the second supply device and a third material detector that detects the material of the waste paper fragment supplied from the first supply device in the first or second facility. A fourth material detector for detecting a material of the waste plastic fragment, a first chlorine content calculating means for calculating a chlorine content of the waste paper fragment based on a detection result of the third material detector, And a second chlorine content calculating means for calculating the chlorine content of the waste plastic fragment based on the detection result of the four-material detector.

  The fourth RPF manufacturing facility is the first, second or third facility, wherein a thermometer for measuring the temperature in the molding machine, and a temperature in the molding machine based on a measurement result of the thermometer is a required value. And a supply amount control means for controlling the supply amounts of the first and second feeders.

  The fifth RPF manufacturing facility includes a first supply conveyor with a variable supply amount for supplying waste paper, a second supply conveyor with a variable supply amount for supplying waste plastic, and a waste paper supplied from the first and second supply conveyors. The first material detector for detecting the material of the mixture of waste paper fragment and waste plastic fragment discharged from the disrupter, and the detection result of the first material detector The calorific value calculating means for calculating the calorific value of the mixture of the waste paper crushed pieces and the waste plastic crushed pieces, and the ratio of the supply amounts of the first and second supply conveyors based on the calorific value calculated by the calorific value calculating means A ratio control means for controlling so as to correspond to a desired calorific value, and a feeder for storing and supplying a mixture of waste paper fragments and waste plastic fragments whose material is detected by the first material detector, A molding machine for extruding and molding a mixture of waste paper shredded pieces and waste plastic shredded pieces supplied from a feeder, wherein the first material detector is discharged from the shredder and being transported. The waste plastic crushed pieces are irradiated with near infrared rays, and the material of the waste paper crushed pieces or the waste plastic crushed pieces is detected. The calorific value calculation means is the number of the used paper crushed pieces or the waste plastic crushed pieces detected. Each of the heat generation amounts is calculated by multiplying the heat generation amount specific to the material.

  The sixth RPF manufacturing facility is the fifth facility, wherein in the fifth facility, the second material detector detects the material of the mixture of waste paper fragment and waste plastic fragment supplied from the feeder, and the second material detector. And a chlorine content calculating means for calculating the chlorine content of the mixture of the waste paper fragment and the waste plastic fragment based on the detection result.

  The seventh RPF manufacturing facility is the fifth or sixth facility, wherein a thermometer for measuring the temperature in the molding machine and a temperature in the molding machine at a required value based on the measurement result of the thermometer. Supply amount control means for controlling the supply amount of the feeder is provided.

  In the fifth, sixth or seventh equipment, the eighth RPF manufacturing equipment is a water content measuring means for measuring the water content of the molded product discharged from the molding machine, and the amount of water sprayed into the molding machine. A variable watering device and watering amount control means for controlling the watering amount of the watering device so that the water content of the molded product becomes a required value based on the measurement result of the water content measuring means. To do.

(Function)
In the first RPF production method and production facility of the present invention, waste paper and waste plastic are supplied separately at different times, and are crushed separately to become waste paper crushed pieces and waste plastic crushed pieces. The material is separately detected by irradiating near infrared rays to the piece and the waste plastic crushed piece, and the number of the waste paper crushed piece and the waste plastic crushed piece detected by the material is multiplied by the calorific value specific to the material, respectively. After the calorific value is calculated, the waste paper crushed pieces and the waste plastic crushed pieces are mixed at a ratio corresponding to the desired calorific value based on the calculated calorific value when molding by the molding machine.

  In the second RPF manufacturing method and its manufacturing equipment, waste paper and waste plastic are supplied separately at the same time, and are separately crushed into waste paper shattered pieces and waste plastic shredded pieces. The material of the waste paper shredded piece and the waste plastic shredded piece is separately detected by irradiating the piece with near infrared rays, and the number of the waste paper shredded piece and the waste plastic shredded piece of material detected is a material-specific heat generation After the calorific value is calculated by multiplying the amount, the waste paper crushed pieces and the waste plastic crushed pieces are mixed at a ratio corresponding to a desired calorific value based on the calorific value calculated in molding by the molding machine.

  In the third RPF manufacturing method and manufacturing equipment, in addition to the effects of the first or second method and equipment, the waste paper shredded pieces and waste plastic shredded pieces to be mixed and supplied are separately detected in material, and chlorine The content is calculated.

  In the fourth RPF manufacturing method and its manufacturing facility, the temperature in the molding machine is maintained at a required value in addition to the effects of the first, second or third method and facility.

  In the fifth RPF manufacturing method and its manufacturing facility, waste paper and waste plastic are supplied separately and crushed together to form a mixture of waste paper crushed pieces and waste plastic crushed pieces, and then irradiated with near infrared rays. In addition to detecting the material of the mixture, the calorific value specific to the material is calculated by multiplying the number of waste paper fragments and waste plastic fragments of the mixture detected by the material detection, and then calculating the respective calorific value. While the mixture of plastic crushed pieces is formed by a molding machine, the ratio of the supply amount of waste paper and waste plastic is controlled to correspond to a desired heat generation amount based on the calculated heat generation amount.

  In the sixth RPF manufacturing method and its manufacturing equipment, in addition to the action of the fifth method and equipment, the material of the mixture of waste paper shredded pieces and waste plastic shredded pieces is detected, and the chlorine content is calculated. .

  In the seventh RPF manufacturing method and manufacturing equipment therefor, the temperature in the molding machine is maintained at a required value in addition to the effects of the fifth or sixth method and equipment.

  Further, in the eighth RPF manufacturing method and the manufacturing equipment thereof, in addition to the effects of the first, second, third, fourth, fifth, sixth or seventh method and equipment, the moisture content of the molded product Is held at the required value.

  The waste paper fragment and waste plastic fragment are preferably about 10 to 60 mm on a side. In addition, examples of the material of the used paper include newspapers and magazines. On the other hand, waste plastic materials include LDPE (low density polyethylene), HDPE (high density polyethylene), PP (polypropylene), PS (polystyrene), EPS (expanded polystyrene), A-PET (polyethylene terephthalate), m-PET. , PVC (vinyl chloride resin), PC (polycarbonate) and the like. Furthermore, the molded product is preferably a short cylinder having a diameter of 5 to 40 mm and a length of 10 to 100 mm. Furthermore, when the unsuitable fuel is not removed from the waste paper fragment and the waste plastic fragment, it is preferable to remove the unsuitable fuel from the waste paper and the waste plastic as a raw material in advance. Examples of unsuitable fuels include metals such as aluminum and chlorinated plastics such as PVC.

  As the crusher, there are a number of short columnar rotary blades projecting on the outer periphery of a horizontal rotor, a saw blade-like fixed blade disposed on one side of the rotor so as to mesh with the rotary blade, and a lower part of the rotor. A single-shaft crusher that is roughly composed of the arranged screen is used. The material detector irradiates near-infrared rays to the waste paper shredded pieces and waste plastic shredded pieces, and detects the material using the fact that the absorbance varies depending on the materials of the waste paper shredded pieces and waste plastic shredded pieces. The calorific value calculation means calculates the product by multiplying the calorific value inherent to the material detected by the material detector and the number of fragments of the inherent material. As the molding machine, there is used a ring die type molding machine that is roughly composed of a ring-shaped die, a plurality of rollers that roll on the inner periphery of the die, and a cutter that is in sliding contact with the outer periphery of the die. As a sorting means, a large number of air nozzles, which are arranged at the carry-out end of a transport conveyor for conveying waste paper fragments and waste plastic fragments to detect the material by a material detector, and blown away the fragments with compressed air, and a material detector A device having nozzle control means for controlling the air nozzle at a position corresponding to the fragment of the required material detected by the above is used. As the moisture content measuring means, a moisture meter that measures the moisture content on the surface of the molded product, and a measuring instrument such as a belt scale that measures the weight of the molded product to measure the specific gravity of the molded product are used.

  As described above, according to the first RPF manufacturing method and manufacturing equipment of the present invention, waste paper and waste plastic are supplied separately at different times, and are separately crushed and used paper crushed pieces and waste plastic crushed pieces. After that, the waste paper shredded pieces and the waste plastic shredded pieces are separately detected by irradiating near-infrared rays, and the material is specific to the number of the waste paper shredded pieces and waste plastic shredded pieces detected. After each calorific value is calculated by multiplying the calorific value of waste paper, the waste paper fragment and waste plastic fragment are mixed at a ratio corresponding to the desired calorific value based on the calorific value calculated when molding by the molding machine. Therefore, the heat generation amount of the RPF can be made uniform according to the desired heat generation amount.

  According to the second RPF manufacturing method and its manufacturing equipment, waste paper and waste plastic are supplied separately at the same time, and are separately crushed into waste paper shredded pieces and waste plastic shredded pieces. The material is separately detected by irradiating near infrared rays to the crushed pieces, and the number of the used paper crushed pieces and the waste plastic crushed pieces detected by the material is multiplied by the calorific value specific to the material to obtain each calorific value. Since it is calculated and mixed at a rate corresponding to the desired calorific value based on the calculated calorific value, the RPF calorific value is matched to the desired calorific value in the same manner as in the production of the first RPF and its manufacturing equipment. And uniform.

  According to the third RPF manufacturing method and its manufacturing equipment, in addition to the operational effects of the first or second method and equipment, the waste paper shredded pieces and waste plastic shredded pieces to be mixed and supplied are detected separately, Moreover, since the chlorine content is calculated, the quality of the RPF can be checked.

  According to the fourth RPF manufacturing method and its manufacturing equipment, in addition to the effects of the first, second or third method and equipment, the temperature in the molding machine is maintained at a required value. Can be performed satisfactorily.

  According to the fifth RPF manufacturing method and manufacturing equipment thereof, waste paper and waste plastic are supplied separately at the same time and crushed together to form a mixture of waste paper shatter and waste plastic shred. The material of the mixture of waste plastic crushed pieces is separately detected by irradiating near infrared rays, and the number of the waste paper crushed pieces and the number of waste plastic crushed pieces detected by the material are multiplied by the calorific value specific to the material, respectively. After the calorific value of the waste paper is calculated, a mixture of waste paper shattered pieces and waste plastic shredded pieces is formed by the molding machine, while the desired heat generation is based on the calculated calorific value of the ratio of the supplied amount of waste paper and waste plastic shredded pieces. The amount of heat generated by the RPF can be made uniform in accordance with the desired amount of heat generated in the same manner as the first and second RPF manufacturing methods and manufacturing facilities thereof. It can be reduced the number of equipment components.

  According to the sixth RPF manufacturing method and its manufacturing equipment, in addition to the effects of the fifth method and equipment, the material of the mixture of waste paper shredded pieces and waste plastic shredded pieces is detected, and the chlorine content is calculated. Therefore, the quality of the RPF can be checked in the same manner as the fifth RPF manufacturing method and the manufacturing equipment therefor.

  According to the seventh RPF manufacturing method and its manufacturing equipment, the temperature in the molding machine is maintained at a required value in addition to the effects of the fifth or sixth method and equipment, so that the fourth RPF is manufactured. As with the method and its manufacturing equipment, the RPF can be manufactured satisfactorily.

  Further, according to the eighth RPF manufacturing method and its manufacturing equipment, in addition to the effects of the first, second, third, fourth, fifth, sixth or seventh method and equipment, Since the moisture content is maintained at a required value, the heat generation amount of the RPF can be made more uniform according to the desired heat generation amount, and the RPF can be manufactured more satisfactorily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a first embodiment of an RPF manufacturing facility according to the present invention. In the figure, 1 is a supply conveyor for supplying used paper or waste plastic (not shown), 2 is a used paper or waste plastic supplied from the supply conveyor 1, and has a required size, for example, a waste paper fragment of about 10 to 60 mm on one side, waste This crusher 2 is a crusher that crushes into plastic crushing pieces. As this crusher 2, for example, a large number of short columnar rotary blades projecting from the outer peripheral surface of a horizontal rotor, and one side of the rotor engaged with the rotary blades. A single-shaft crusher that is roughly composed of a disposed saw blade-shaped fixed blade and a screen disposed below the rotor is used.

  Reference numeral 3A denotes a first material detector that is disposed above a conveyor 4A that horizontally conveys waste paper shredded pieces (not shown) discharged from the shredder 2, and detects a material of the waste paper shredded pieces. 3B denotes a shredder. 2 is a second material detector that is disposed above a conveyor 4B that horizontally conveys waste plastic crushed pieces (not shown) discharged from 2 and detects the material of the waste plastic crushed pieces. 3A, 3B irradiates near-infrared rays to waste paper shredded pieces and waste plastic shredded pieces transported on the transport conveyors 4A, 4B, and detects the material using the fact that the absorbance varies depending on the material (special (See Table 5-506832). Then, the detection results of both the material detectors 3A and 3B are input to the control panel 5, and a first calorific value calculating means (not shown) mounted on the control panel 5 is used to detect a metal such as aluminum or a chlorine such as PVC. The calorific value of waste paper fragments excluding plastics and other fuel inadequate materials (hereinafter the same) is calculated, and the second calorific value calculation means (not shown) mounted on the control panel 5 The calorific value of the waste plastic crushed pieces is calculated. Each calorific value is obtained by multiplying the number of crushed pieces by the calorific value of the crushed pieces.

  6A is a first sorting means for removing unsuitable fuel from waste paper fragments, 6B is a second sorting means for removing unsuitable fuel from waste plastic fragments, and both sorting means 6A and 6B are A large number of waste paper fragments and waste plastic fragments, which are horizontally disposed at the delivery end of the conveyors 4A and 4B at right angles to the conveying direction and are suitable as fuel, are blown over the branch plates 7A and 7B by compressed air, respectively. Air nozzles 8A and 8B, compressed air tanks (both not shown) connected to the air nozzles 8A and 8B via solenoid valves, and mounted on the control panel 5 described above, the first and second material detectors 3A, Based on the detection result of 3B, the operation of the required solenoid valve is controlled to operate the air nozzles 8A and 8B at the positions corresponding to the waste paper fragment and waste plastic fragment suitable as fuel. , The second nozzle control means (not shown), and the conveyance conveyor along with the non-operation of the air nozzles 8A and 8B at the positions corresponding to the unsuitable fuel based on the detection results of the first and second material detectors 3A and 3B. It consists of unsuitable material accommodation boxes 9A and 9B for housing unsuitable materials that fall from the unloading ends of 4A and 4B.

  Reference numeral 10A denotes a hopper 11A for storing used paper crushed pieces suitable as fuel selected by the first sorting means 6A, and a variable-feed screw feeder 12A for supplying the used paper crushed pieces stored in the hopper 11A to a molding machine to be described later. The first feeder 10B is a hopper 11B for storing waste plastic crushed pieces suitable as fuel sorted by the second sorting means 6B, and the waste plastic crushed pieces stored in the hopper 11B are fed to a molding machine to be described later. This is a second feeder comprising a variable feed amount screw feeder 12B, and the ratio of the supply amounts of both feeders 10A and 10B is mounted on the control panel 5 and calculated by the first and second calorific value calculation means. Based on the calorific value, the waste paper shredded pieces and the waste paper are made so that the calorific value of the RPF as the product (molded product) corresponds to the desired calorific value. And it is controlled by a ratio control means for controlling the ratio of the stick debris (not shown). Further, the supply amounts of the first and second supply machines 10A and 10B are set in the molding machine by a supply quantity control means (not shown) mounted on the control panel 5 in order to keep the temperature in the molding machine described later at a required value. It is controlled based on the temperature measurement result.

  13A is a third material detector for detecting the material of the waste paper fragment supplied from the first supply machine 10A, and 13B is a fourth material detector for detecting the material of the waste plastic fragment supplied from the second supply machine 10B. It is. Both material detectors 13A and 13B have the same functions as the first and second material detectors 3A and 3B described above, and the respective detection results are input to the control panel 5, and waste paper fragments, In order to check the quality of the waste plastic fragment, the chlorine content of the waste paper fragment and waste plastic fragment is calculated and displayed and recorded by first and second chlorine content calculation means (not shown). Is.

  14 is a waste paper shredded piece and waste plastic shredded piece mixed and supplied from the first and second feeders 10A and 10B at a ratio corresponding to a desired calorific value. This is a molding machine that extrudes into a 10-50 mm short cylinder, and this molding machine 14 is composed of a ring-shaped die, a plurality of rollers that roll on the inner periphery of the die, and a cutter that is in sliding contact with the outer periphery of the die. Has been. The molding machine 14 is provided with a thermometer 15 for measuring the temperature inside the molding machine 14, and the measurement result of the thermometer 15 is input to the control panel 5 and becomes a reference input element of the above-described supply amount control means. Is. Further, the molding machine 14 is provided with a sprinkling device 16 having a variable sprinkling amount for sprinkling water into a mixture of waste paper shredded pieces and waste plastic shredded pieces supplied therein. The watering amount of the watering device 16 is controlled by the watering amount control means described later based on the measurement result of the water content measuring means.

  17 is a cooler that cools a molded product (RPF) discharged from the molding machine 14 and air-fitted through the blower 18, and 19 is weighed to measure the specific gravity of the RPF cooled by the cooler 17. At the same time, a belt scale transported to the product yard 20 is disposed above the belt scale 19 and constitutes a moisture content measuring means 22 in combination with a moisture meter 21 for measuring the moisture content on the surface of the RPF. is there. Then, the measurement result of the moisture content measuring means 22 is input to the control panel 5, and based on this measurement result, the water content of the RPF is set to a required value by the sprinkling amount control means (not shown) mounted on the control panel 5. The watering amount of the watering device 16 is controlled so that

  In order to manufacture RPF by the RPF manufacturing facility having the above-described configuration, first, waste paper and waste plastic are supplied to the crusher 2 separately by shifting the time by the supply conveyor 1, and are separately crushed to the required dimensions, and the waste paper crushed pieces. Use waste plastic fragments. Next, the materials of the waste paper shredded pieces and the waste plastic shredded pieces are detected by the first and second material detectors 3A and 3B, and the waste paper shredded pieces and waste plastic shredded pieces excluding the unsuitable fuel based on the detection result. Are calculated by the first and second calorific value calculation means, and the first and second sorting means 6A and 6B perform sorting for removing unsuitable fuel from the waste paper fragment and waste plastic fragment.

  Next, the waste paper fragments and waste plastic fragments from which the unsuitable fuel has been removed are stored in the first and second feeders 10A and 10B, and based on the calorific values calculated by the first and second calorific value calculation means. The ratio of the supply amounts of the first and second feeders 10A and 10B is controlled by the ratio control means so as to correspond to the desired heat generation amount, and the waste paper crushed pieces and the waste plastic crushed pieces are mixed and supplied to the molding machine 14. Then, an RPF having a required dimension and shape is extruded. Next, after the molded product (RPF) is air conveyed to the cooler 17 by the blower 18 and cooled, the molded product (RPF) is conveyed to the product yard 20 by the belt scale 19 and stored.

  When supplying waste paper fragments and waste plastic fragments from the first and second feeders 10A and 10B to the molding machine 14, the first and second material detectors 13A and 13B are used to determine the first The chlorine content of the waste paper shredded piece and waste plastic shredded piece is calculated and displayed and recorded by the second chlorine content calculating means, and the quality of each can be checked. Further, at the time of molding in the molding machine 14, the supply amount of the waste paper shredded pieces and the waste plastic shredded pieces is controlled by the supply amount control means, and the temperature in the molding machine 14 is maintained at a required value. Furthermore, at the time of molding in the molding machine 14, the amount of water sprayed by the water spray device 16 is controlled by the water spray amount control means so that the water content of the molded product becomes a required value.

  FIG. 2 is a schematic configuration diagram showing a second embodiment of the RPF manufacturing facility according to the present invention. The RPF manufacturing equipment of the first embodiment described above has one supply conveyor 1 and one crusher 2, and separates waste paper and waste plastic into the crusher 2 by shifting the time with the supply conveyor 1 separately. While the paper is supplied and crushed separately into the required size and shape to make waste paper shredded pieces and waste plastic shredded pieces, the feed conveyor is the first feed conveyor 1A for feeding waste paper and the second feed conveyor for feeding waste plastic 1B and two crushers, the first crusher 2A for crushing waste paper supplied from the first supply conveyor 1A to the required dimensions, and the waste plastic supplied from the second supply conveyor 1B to the required dimensions 2nd crusher 2B that crushes into two, and waste paper and waste plastic are simultaneously supplied to first and second crushers 2A and 2B separately by first and second supply conveyors 1A and 1B Separately crushed waste paper fragments of the required size, in which to obtain separately the waste plastic fragments. Since other configurations and operations are the same as those of the first embodiment, the same reference numerals are given to structural members having the same functions, and the description thereof is omitted.

  FIG. 3 is a schematic configuration diagram showing a third embodiment of the RPF manufacturing facility according to the present invention. In the figure, 1C is a first supply conveyor with variable supply amount for supplying waste paper (not shown), 1D is a second supply conveyor with variable supply amount for supplying waste plastic (not shown), and both supply conveyors 1C and 1D. As will be described later, the ratio of the supply amount of the waste paper and the waste plastic is set so that the heat generation amount of the RPF as a product (molded product) corresponds to the desired heat generation amount based on the heat generation amount calculated by the heat generation amount calculation means. It is controlled by ratio control means for controlling the ratio. 2C is a crusher that crushes a mixture of waste paper and waste plastic supplied separately from the first and second supply conveyors 1C and 1D together to make waste paper shredded pieces and waste plastic shredded pieces of desired dimensions. As crusher 2C, the thing similar to crusher 2, 2A, 2B mentioned above is used.

  3C is disposed above a conveyor 4C that horizontally conveys a mixture (not shown) of waste paper fragments and waste plastic fragments discharged from the crusher 2C, and contains a mixture of waste paper fragments and waste plastic fragments. This is a first material detector that detects the material, and this first material detector 3C is the same as the first and second material detectors 3A and 3B described above. Then, the detection result of the first material detector 3C is input to the control panel 5, and the waste paper fragment and waste plastic fragment excluding the unsuitable fuel are removed by the calorific value calculation means (not shown) mounted on the control panel 5. The calorific value of the mixture of pieces is calculated, and the calorific value calculated by the calorific value calculation means is output to a ratio control means (not shown) mounted on the control panel 5, and by the ratio control means, The ratio of the supply amount of the first and second supply conveyors 1C and 1D is controlled so that the heat generation amount of the RPF corresponds to the desired heat generation amount. The calorific value is obtained by multiplying the number of crushed pieces by the calorific value of the crushed pieces.

  6C is a sorting means for performing sorting to remove unsuitable fuel from the mixture of waste paper shattered pieces and waste plastic shredded pieces. This sorting means 6C is transported in the same manner as the first and second sorting means 6A and 6B described above. A number of air nozzles 8C, each of which is disposed horizontally at the delivery end of the conveyor 4C in a direction perpendicular to the transport direction and blows off used paper crushed pieces and waste plastic crushed pieces over the branch plate 7C by compressed air. Compressed air tank (not shown) connected to 8C via a solenoid valve (both not shown), waste paper shredded piece mounted on the control panel 5 and adapted as fuel based on the detection result of the first material detector 3C, Nozzle control means (not shown) for controlling the operation of a required electromagnetic valve to operate the air nozzle 8C at a position corresponding to the waste plastic fragment, and the first material detector 3C Based on the detection result, consisting of unsuitable material accommodating box 9C for accommodating the fuel unsuitable material falling from the carry-out end of the conveyor 4C with the inoperative air nozzles 8C of positions corresponding to the fuel unsuitable product.

  Reference numeral 10C denotes a hopper 11C for storing a mixture of used paper crushed pieces and waste plastic crushed pieces sorted by the sorting means 6C, and a mixture of used paper crushed pieces and waste plastic crushed pieces stored in the hopper 11C to a molding machine to be described later. This is a feeder comprising a screw feeder 12C having a variable supply amount. The supply amount of the feeder 10C is a supply amount control means (see FIG. 5) mounted on the control panel 5 in order to keep the temperature in the molding machine described later at a required value. It is controlled based on the temperature measurement result in the molding machine.

  13C is a second material detector for detecting the material of the mixture of waste paper fragments and waste plastic fragments supplied from the feeder 10C. The second material detector 13C is the first material detector 3C described above. The detection result is input to the control panel 5, and a chlorine content calculation means (not shown) is used to check the quality of the mixture of waste paper shredded pieces and waste plastic shredded pieces. The chlorine content of the mixture is calculated and displayed and recorded.

  The configuration after the molding machine 14 for extruding a mixture of waste paper shredded pieces and waste plastic shredded pieces supplied from the feeder 10C into a required size and shape is the same as that of the first and second embodiments described above. Therefore, the same code | symbol is attached | subjected to the structural member etc. which show | play the same function, and the description is abbreviate | omitted.

  In order to manufacture RPF by the RPF manufacturing facility having the above-described configuration, first, waste paper and waste plastic are simultaneously supplied separately to the crusher 2C by the first and second supply conveyors 1C and 1D, and are crushed together to the required dimensions. A mixture of waste paper fragments and waste plastic fragments. Next, the material of the mixture of the waste paper fragment and waste plastic fragment is detected by the first material detector 3C, and the calorific value of the mixture of the waste paper fragment and waste plastic fragment excluding the unsuitable fuel based on the detection result. Is calculated by the calorific value calculation means, and the ratio of the supply amounts of the first supply conveyor 1C and the second supply conveyor 1C is set so that the RPF calorific value corresponds to the desired calorific value based on the calculated calorific value. While being controlled by the ratio control means, sorting is performed by the sorting means 6C to remove the unsuitable fuel from the mixture of the waste paper fragment and waste plastic fragment based on the detection result of the first material detector 3C.

  Next, the mixture of used paper crushed pieces and waste plastic crushed pieces from which fuel-inappropriate materials have been removed is stored in the feeder 10C and supplied to the molding machine 14 to extrude a PRF having a required size and shape. Next, after the molded product (RPF) is air conveyed to the cooler 17 by the blower 18 and cooled, the molded product (RPF) is conveyed to the product yard 20 by the belt scale 19 and stored.

  When supplying the mixture of waste paper fragments and waste plastic fragments from the feeder 10C to the molding machine 14, the chlorine content of the mixture is determined by the chlorine content calculation means based on the detection result of the second material detector 13C. It is calculated, displayed and recorded, and its quality can be checked. Further, at the time of molding in the molding machine 14, the supply amount of the mixture of the waste paper crushed pieces and the waste plastic crushed pieces is controlled by the supply amount control means, and the temperature in the molding machine 14 is maintained at a required value. Furthermore, at the time of molding in the molding machine 14, the amount of water sprayed by the water spray device 16 is controlled by the water spray amount control means so that the water content of the molded product becomes a required value.

  In each of the above-described embodiments, the case where the sorting means 6A, 6B, and 6C that perform sorting for removing unsuitable fuel from the crushed pieces has been described. However, the present invention is not limited to this, and the sorting means is not limited to this. There is no need. In this case, it is preferable to remove inadequate fuel from waste paper and waste plastic as raw materials. In addition, a thermometer 15 and a supply amount for maintaining the temperature in the third and fourth material detectors 13A and 13B, the second material detector 13 and the molding machine 14 for detecting the chlorine content at required values. The control means, the watering device 16, the belt scale 19 and the watering amount control means for maintaining the water content of the molded product at a required value may be omitted. Furthermore, the molding machine 14 is not limited to a ring die type molding machine, but may be a twin screw type extrusion molding machine or the like.

It is a schematic block diagram which shows 1st Embodiment of the manufacturing facility of RPF which concerns on this invention. It is a schematic block diagram which shows 2nd Embodiment of the manufacturing facility of RPF which concerns on this invention. It is a schematic block diagram which shows 3rd Embodiment of the manufacturing facility of RPF which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supply conveyor 1A 1st supply conveyor 1B 2nd supply conveyor 1C 1st supply conveyor 1D 2nd supply conveyor 2 Crusher 2A 1st crusher 2B 2nd crusher 2C Crusher 3A 1st material detector 3B 2nd material detection 3C First material detector 5 Control panel 6A First sorting means 6B Second sorting means 6C Sorting means 7A Branch plate 7B Branch plate 7C Branch plate 8A Air nozzle 8B Air nozzle 8C Air nozzle 9A Inappropriate material storage box 9B Inappropriate material storage box 9C Object storage box 10A First supply machine 10B Second supply machine 10C Supply machine 11A Hopper 11B Hopper 11C Hopper 12A Screw feeder 12B Screw feeder 12C Screw feeder 13A Third material detector 13B Fourth material detector 13C Second material detector 14 Molding machine 15 Thermometer 16 Watering device 19 Belt scale 21 moisture meter 22 water content measuring means

Claims (16)

  Waste paper and waste plastic are supplied separately at different times and crushed separately, and the waste paper crushed pieces and waste plastic crushed pieces are made of materials by irradiating near-infrared rays while transporting the waste paper crushed pieces and waste plastic crushed pieces. Detecting the waste paper separately, and multiplying the number of the waste paper pieces and waste plastic pieces by detecting the amount of heat generated by multiplying the number of the waste paper pieces and the waste plastic pieces separately, A method for producing an RPF, comprising separately storing pieces and mixing and supplying the pieces at a ratio corresponding to a desired calorific value based on the calculated calorific value.   Waste paper and waste plastic are supplied separately and crushed separately, and the waste paper crushed pieces and waste plastic crushed pieces are separated from each other by irradiating near-infrared rays while transporting the waste paper crushed pieces and waste plastic crushed pieces. After detecting and separately calculating the calorific value by multiplying the number of the waste paper crushing pieces and waste plastic crushing pieces whose materials were detected by multiplying the calorific value specific to the material, the waste paper crushing pieces and the waste plastic crushing pieces are A method for producing an RPF characterized by storing separately and mixing and supplying at a ratio corresponding to a desired calorific value based on the calculated calorific value.   3. The mixed material supply of the waste paper shredded piece and the waste plastic shredded piece, their materials are detected separately, and their chlorine content is calculated separately. Manufacturing method of RPF.   The temperature at the time of the extrusion molding is measured, and the supply amount of the waste paper crushed pieces and the waste plastic crushed pieces is controlled so that the molding temperature becomes a required value. The manufacturing method of RPF as described in any one of these.   Waste paper and waste plastic are supplied separately and crushed together, and the material of the mixture is detected by irradiating near-infrared rays while transporting the mixture of waste paper crushed pieces and waste plastic crushed pieces. After calculating the calorific value by multiplying the number of waste paper fragments and waste plastic fragments of the mixture by the calorific value specific to the material, the waste paper and the waste paper are adjusted to correspond to the desired calorific value based on the calorific value calculated. While controlling the ratio of the supply amount of waste plastic, while storing the mixture of the said waste paper crushing piece and the said waste plastic crushing piece, supplying and extruding it, The manufacturing method of RPF characterized by the above-mentioned.   6. The method for producing an RPF according to claim 5, wherein the material is detected and the chlorine content is calculated when supplying the mixture of the waste paper fragment and the waste plastic fragment.   The temperature at the time of the extrusion molding is measured, and the supply amount of the mixture of the waste paper crushed pieces and the waste plastic crushed pieces is controlled so that the molding temperature becomes a required value. Item 7. A method for producing an RPF according to Item 6.   The moisture content of the extruded molded product is measured, and the moisture content of the mixture of the waste paper fragment and the waste plastic fragment is controlled so that the moisture content of the molded product becomes a required value. The method for producing an RPF according to any one of claims 1 to 7. A supply conveyor that supplies waste paper or waste plastic, a crusher that crushes waste paper or waste plastic supplied from the supply conveyor, a first material detector that detects the material of the waste paper fragments that are discharged from the crusher, and crushing A second material detector for detecting the material of the waste plastic fragment discharged from the machine, a first calorific value calculating means for calculating the amount of heat generated from the waste paper fragment based on the detection result of the first material detector, The second calorific value calculation means for calculating the calorific value of the waste plastic crushed piece based on the detection result of the two material detectors, and the supply amount for storing and supplying the waste paper crushed piece whose material has been detected by the first material detector A variable first supply unit, a second supply unit having a variable supply amount for storing and supplying waste plastic fragments whose material is detected by the second material detector, and a supply amount of the first and second supply units. The ratio The ratio control means for controlling the calorific value calculated by the second calorific value calculation means so as to correspond to the desired calorific value, and the first and second feeders are controlled by the ratio control means. A molding machine for extruding a mixture of waste paper fragments and waste plastic fragments,
The first material detector and the second material detector irradiate near-infrared rays to the waste paper shredded piece or the waste plastic shredded piece that is discharged from the crusher and being conveyed, and the waste paper shredded piece or the waste plastic Detect the material of the fragment,
The first calorific value calculation means and the second calorific value calculation means calculate the respective calorific values by multiplying the number of the waste paper crush pieces or the waste plastic crush pieces whose materials are detected by a calorific value specific to the material. RPF production equipment characterized by the above. A first supply conveyor for supplying waste paper, a second supply conveyor for supplying waste plastic, a first crusher for crushing waste paper supplied from the first supply conveyor, and waste plastic supplied from the second supply conveyor A second crusher that crushes, a first material detector that detects the material of the waste paper crusher discharged from the first crusher, and a second that detects the material of the waste plastic crusher discharged from the second crusher. The material detector, the first calorific value calculating means for calculating the calorific value of the waste paper fragment based on the detection result of the first material detector, and the heat generation of the waste plastic fragment based on the detection result of the second material detector A second calorific value calculation means for calculating the amount, a first supply machine with variable supply amount for storing and supplying waste paper fragments whose material has been detected by the first material detector, and a material by the second material detector. Waste plus detected A calorific value calculated by the first and second calorific value calculation means for the ratio of the supply amount of the second supply device having a variable supply amount that stores and supplies the crushed pieces and the first and second supply devices And a ratio control means for controlling to correspond to a desired calorific value, and a mixture of waste paper crushed pieces and waste plastic crushed pieces controlled by the ratio control means and supplied from the first and second feeders. And a molding machine
The first material detector and the second material detector irradiate near-infrared rays to the waste paper shredded piece or the waste plastic shredded piece that is discharged from the crusher and being conveyed, and the waste paper shredded piece or the waste plastic Detect the material of the fragment,
The first calorific value calculation means and the second calorific value calculation means calculate the respective calorific values by multiplying the number of the waste paper crush pieces or the waste plastic crush pieces whose materials are detected by a calorific value specific to the material. RPF manufacturing equipment characterized by this.   A third material detector for detecting the material of the waste paper fragment supplied from the first supply device, a fourth material detector for detecting the material of the waste plastic fragment supplied from the second supply device, First chlorine content calculating means for calculating the chlorine content of the waste paper fragment based on the detection result of the third material detector, and the chlorine content of the waste plastic fragment based on the detection result of the fourth material detector The RPF manufacturing facility according to claim 9, further comprising: a second chlorine content calculating unit that calculates   A thermometer for measuring the temperature in the molding machine, and a supply amount control means for controlling the supply quantities of the first and second feeders so that the temperature in the molding machine becomes a required value based on the measurement result of the thermometer. The RPF manufacturing facility according to any one of claims 9 to 11, comprising: A first supply conveyor with a variable supply amount for supplying waste paper, a second supply conveyor with a variable supply amount for supplying waste plastic, and a shredding for crushing a mixture of waste paper and waste plastic supplied from the first and second supply conveyors , A first material detector for detecting the material of the mixture of waste paper shredder and waste plastic shredder discharged from the shredder, and waste paper shredder and waste plastic shredder based on the detection result of the first material detector The calorific value calculating means for calculating the calorific value of the mixture and the ratio of the supply amounts of the first and second supply conveyors to correspond to the desired calorific value based on the calorific value calculated by the calorific value calculating means. A ratio control means for controlling the supply, a feeder for storing and supplying a mixture of waste paper fragments and waste plastic fragments whose material has been detected by the first material detector, and waste paper breakage supplied from the feeder And a molding machine for extruding a mixture of pieces and waste plastic fragments,
The first material detector irradiates near-infrared rays to the used paper crushing piece or the waste plastic crushing piece discharged from the crusher and being conveyed, and detects the material of the used paper crushing piece or the waste plastic crushing piece. ,
The said calorific value calculation means calculates the calorific value by multiplying the calorific value peculiar to the material by the number of the used paper crushed pieces or the waste plastic crushed pieces whose material has been detected, and the RPF manufacturing facility.   A second material detector for detecting a material of the mixture of the used paper shredded piece and the waste plastic shredded piece supplied from the feeder; and a used paper shredded piece and a waste plastic shredded piece based on a detection result of the second material detector. The RPF manufacturing facility according to claim 13, further comprising: a chlorine content calculation unit that calculates a chlorine content of the mixture.   A thermometer for measuring the temperature in the molding machine, and a supply amount control means for controlling the supply amount of the feeder so that the temperature in the molding machine becomes a required value based on the measurement result of the thermometer. The RPF manufacturing facility according to claim 13 or 14, characterized in that it is characterized in that:   Moisture content measuring means for measuring the moisture content of the molded product discharged from the molding machine, a water spraying variable device for spraying water into the molding machine, and the moisture content of the molded product based on the measurement results of the moisture content measuring means. The RPF manufacturing facility according to any one of claims 9 to 15, further comprising: a sprinkling amount control unit that controls a sprinkling amount of the sprinkler so that the amount reaches a required value.

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