KR101255114B1

KR101255114B1 - Pellet type novel recycled fuel using sawdust and production system and method thereof

Info

Publication number: KR101255114B1
Application number: KR1020090123033A
Authority: KR
Inventors: 문영묵
Original assignee: 천호산업(주); 문영묵
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2013-04-17
Also published as: KR20110066397A

Abstract

The present invention relates to a pellet type renewable fuel using sawdust (Sawdusst), and a production system and a production method thereof, the sawdust raw material manufacturing unit (10); Sawdust raw material drying unit 20 for drying the sawdust raw material; Renewable fuel molding unit 30 for molding a sawdust raw material into a pellet type renewable fuel products; A product packaging part 40 for transporting, storing, and packaging the molded renewable fuel; It consists of a system control unit 50 for controlling the pellet type renewable fuel production system and can effectively remove the dust generated in the sawdust manufacturing process, drying in accordance with the moisture content of sawdust using a double drum dryer in the sawdust drying process By adjusting the drum's operating condition automatically, the moisture content of sawdust can be the optimum moisture content for pellet molding and the productivity can be increased.When water or adhesiveness is insufficient during the pellet molding process, it can automatically supply moisture or adhesive. In addition, by applying the air transport device to transport the produced product, it can be easily transported to various places, loaded into the truck without packing or packing variously, and the height of the product opening can be automatically adjusted when loading on the truck. Easy to load and simple to load The use to recover waste heat from the reduction and product production and economic efficiency is excellent in saving energy, it is a useful invention that has particular advantages which contribute to reduce greenhouse gas emissions.

Sawdust, pellets, renewable fuels, peelers, crushers, blowers, cyclone dust collectors, airlocks.

Description

Pellet type novel recycled fuel using sawdust and production system and method

The present invention relates to a recycled fuel and its production system, and more specifically, to produce a pellet-type fuel from sawdust, sawdust that can be used as a fuel for steam generation, such as domestic heating materials, cogeneration power plant fuel, sauna rooms of commercial buildings, etc. The present invention relates to a pellet type renewable fuel and its production system and production method.

In general, the means of providing renewable fuels using waste such as wood, plywood, and waste furniture generated and discharged from sawmills and construction sites is very urgent and important for energy conservation and recycling.

Sawdust manufacturing apparatus for transporting wastes, waste furniture, etc. generated at construction sites to conveyors and recycling them into shredding chambers and recycling shredded materials in shredding chambers is well disclosed in Korean Patent Registration No. 10-0543676.

Although different materials, a pellet fuelization apparatus using wood sawdust medium generated in the mushroom cultivation is disclosed in detail in Korean Patent Laid-Open Publication No. 10-2009-0114961, the collection, crushing, separation, drying of sawdust medium , Pellet and briquette molding process.

On the other hand, with respect to the sawdust, grain-derived fuel stove produced as described above in the Korean Patent Application Publication No. 10-2008-0055629 and sawdust fuel using a sawdust storage hopper and sawdust transfer means for the combustion chamber The automatic supply device for supplying the gas is disclosed in detail in Korean Utility Model Publication No. 1993-0006568.

The prior arts investigated by the present inventors have been found to have been mostly related to the fuelization apparatus of various sawdust materials or the transfer and combustion apparatus of sawdust fuel.

However, until now, there has never been any technology that has been industrialized by presenting a series of process systems from pulverizing wood-based and herbaceous raw materials to sawdust, drying them without dust, pelletizing them by compression molding, and packaging and commercializing them. .

Renewable fuel of the present invention has a socio-economic effect that can reduce the greenhouse gas CO2 emissions to less than 1/12 as well as a replacement fuel to replace the existing coal or fossil fuel.

Accordingly, the present invention has been invented to solve various drawbacks and problems caused by the prior arts in view of the above circumstances, and an object thereof is to produce sawdust by grinding wood-based and herbal-based raw materials not developed until now. After drying and pelletizing and packaging, it provides pellet-type renewable fuel using eco-friendly sawdust, which reduces greenhouse gas CO ₂ emissions, and its production system and production method.

Pellet-type renewable fuel production system using the present invention for achieving the above object is a sawdust raw material manufacturing unit 10 for producing a sawdust raw material by grinding wood-based and herbaceous raw materials; A sawdust raw material drying unit 20 for drying the sawdust raw material manufactured by the sawdust raw material manufacturing unit 10; Renewable fuel molding unit 30 for molding a sawdust raw material into a pellet type renewable fuel products; Product packaging unit 40 for transporting and storing the molded renewable fuel; Characterized in that the system control unit 50 for controlling the pellet type renewable fuel production system.

The present invention can effectively remove the dust generated during the sawdust manufacturing process, by using a double drum in the sawdust drying process, the moisture content of the sawdust by pelletizing the operating conditions of the drying drum according to the moisture content of the sawdust, the optimum moisture content for pellet molding In this way, the productivity can be increased, and when water or adhesiveness is insufficient in the pellet forming process, it can automatically supply moisture or adhesive, as well as apply an air transfer device to transfer the produced products. It can be easily transported to a place, loaded into a truck without packing or packing variously, and the height of the product inlet can be automatically adjusted when loading on a truck, making it easy and convenient to load, thereby reducing the loading cost and By recovering and using waste heat in the production process, The economy is excellent and there are special advantages that contribute to reducing greenhouse gas emissions.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the pellet-type renewable fuel using the present invention, its production system and production method.

1 is a block diagram of a pellet type renewable fuel production system using the sawdust of the present invention, Figure 2 is a detailed block diagram of a pellet type renewable fuel production system using the sawdust of the present invention, Figure 3 is a drying according to the present invention Sectional view of the apparatus, Figure 4 is a cross-sectional view of the mixed-quantity feeder according to the present invention, Figure 5 is a flow chart of the execution of the pellet-type renewable fuel production method using the sawdust of the present invention, the pellet-type renewable fuel production using the sawdust of the present invention The system includes a sawdust raw material manufacturing unit 10 for producing sawdust raw materials by grinding wood-based and herbal raw materials; A sawdust raw material drying unit 20 for drying the sawdust raw material manufactured by the sawdust raw material manufacturing unit 10; Renewable fuel molding unit 30 for molding a sawdust raw material into a pellet type renewable fuel products; Product packaging unit 40 for transporting and storing the molded renewable fuel; It is composed of a system control unit 50 for controlling the pellet type renewable fuel production system.

The sawdust raw material manufacturing unit 10 is a peeling machine 11 to peel the wood-based raw material; A crusher 12 for crushing the peeled wood; A first blower 13 which blows the sawdust A formed by crushing with air and passes it through the pipe P1; A first cyclone dust collector (14) for suctioning sawdust (A) to separate air and sawdust (A); A sorter (15) for sorting the sawdust (A) transferred from the first cyclone dust collector (14) through a pipe (P2) and an airlock valve (V1) according to size; A grinder 16 for regrinding sawdust A which does not pass through the sorter 15; A blower (17) for conveying the sawdust (A) passing through the sorter (15) through a pipe (P3) and a valve (V1); A second cyclone dust collector (18) separating the air and the sawdust (A) by suctioning the sawdust (A) through the pipe (P3); It consists of a filter bag dust collector (19) having a suction blower (19a) for collecting dust in the sawdust raw material manufacturing unit 10 to separate the dust and air.

The sawdust raw material drying unit 20 is an underground hopper (21) for temporarily storing the sawdust produced in the sawdust raw material manufacturing unit 10, the upper end is installed in parallel with the ground; A first screw feeder 21 'for transporting the sawdust A stored in the underground hopper 21 in a horizontal direction; A bucket elevator 22 for moving the sawdust A conveyed to the first screw feeder 21 'upwardly; A storage hopper 23 for temporarily storing the transferred sawdust A; A second screw feeder 24 for conveying the sawdust A stored in the storage hopper 23 by a predetermined amount; A drying device 25 for drying the sawdust introduced; A third cyclone dust collector (26) which separates air and dust by sucking dust generated in the drying device (25); A third blower (27) for delivering air separated from the third cyclone dust collector (26); A waste heat recovery unit 28 for recovering waste heat from the air introduced; The hot air supplier 29 is provided with the 4th blower 29a which supplies hot air to the said drying apparatus 25. As shown in FIG.

Wherein the storage hopper 23 is to install the low leveler 23a for detecting the minimum amount of sawdust (A) to be stored and the high leveler (23b) for detecting the maximum amount of sawdust (A) is the storage of sawdust (A) It is preferable because it can control the discharge and discharge automatically.

In addition, the drying device 25 is composed of a third screw feeder (25a), the inner rotating drum (25b) and the outer rotating drum (25c) to form a double drum structure, the inner periphery and the outer of the inner rotating drum (25b) On the inner circumference of the rotating drum 25c is provided a plurality of feed wings so that the sawdust (A) is transported in the set transport direction.

The new renewable fuel molding unit 30 is a fourth cyclone dust collector (31) for separating the air and sawdust (A) by sucking the sawdust (A) from the drying device 25 through the pipe (P4); Dry sawdust storage tank 32 for temporarily storing the introduced dry sawdust (A); Mixed-quantity feeder 33 for controlling the moisture content of the sawdust while transferring the dry sawdust (A) by a predetermined amount from the dry sawdust storage tank 32; A flat die pellet machine (34) for introducing a sawdust (A) from the mixing quantitative feeder (33) and molding the pellet into a pellet type; A belt conveyor 35 for conveying the shaped fuel pellets; A fixed quantity feeder 36 for discharging the fuel pellets by a predetermined amount from the belt conveyor 35; A cooler (37) having a cold air blower (37a) for cooling fuel pellets introduced by a predetermined amount by said metering feeder (36); And a fifth cyclone dust collector 38 having an exhaust blower 38a for collecting the exhaust discharged from the cooler 37 and separating it into dust and air.

Here, the dry sawdust storage tank 32 is provided with a low leveler 32a for detecting the minimum amount of sawdust (A) to be stored and a high leveler (32b) for detecting the maximum amount of sawdust (A), the mixed quantity The feeder 33 is composed of two casings 33a and two rotary shafts 33b and 33b 'installed in parallel in the interior of the casing 33a, and a spray nozzle 33c for supplying water. The rotary shafts 33b, 33b ') Each of the outer periphery is provided with a plurality of feed blades 33d so that sawdust (A) is transferred in the set feed direction, the feed blade (33d) of the rotary shaft (33b) and the feed blade (33b') of the rotary shaft (33b ') 33d) overlap each other but do not strike.

The product packaging unit 40 and the first product selector 41 for separating the impurities (dust) and the product in the fuel pellet product conveyed through the pipe (P5); A first product storage tank 42 for temporarily storing the products selected by the first product selector 41; A packing means (43) having a packing machine for carrying out and packing the product stored in the first product storage tank (42), a heat sealer (43a), and a wrapping machine (43b); A second product selector 44 which stops the function of the first product selector 41 and separates the dust and the product from the fuel pellet product conveyed through the pipe P5 and the pipe P6; A second product storage tank 45 for temporarily storing the products selected by the second product selector 44; An up and down chute 46 connected to a lower end of the second product storage tank 45 and having a vibration feeder 46a for carrying out products stored in the second product storage tank 45 to the bulk truck D; A fifth cyclone dust collector (47) having an exhaust blower (47a) for collecting and treating the dust separated by the second product selector (44); It consists of a filter bag dust collector 48 having a suction blower (48a) for collecting the dust in the product packaging unit 40 to separate the dust and air.

In addition, the system control unit 50 is an air compressor 51 for compressing and supplying the air required by the new renewable fuel production system of the present invention; Computational control equipment comprising a memory in which a control program required for controlling the renewable fuel production system is stored, a display indicating an operating state of the CPU, a renewable fuel production system, an operation switch, and an operation panel on which a setting button is installed. 52).

On the other hand, a pellet-type renewable fuel production method using the sawdust of the present invention is a sawdust raw material manufacturing process (S1) for producing a sawdust raw material by grinding the wood-based and herbal raw materials; Sawdust raw material drying step (S2) of drying the sawdust raw material produced in the sawdust raw material manufacturing process (S1); Renewable fuel molding process (S3) for molding the sawdust raw material into a pellet type renewable fuel products; It consists of a product packaging process (S4) for packaging the molded renewable fuel.

The sawdust raw material manufacturing process (S1) is a process of peeling the wood-based raw material with a peeler 11; Pulverizing the wood peeled by the crusher 12; Separating the air from the sawdust (A) by sucking the first sawdust (14) crushed sawdust (A); Selecting a sawdust (A) with a sorter (15); Regrinding the sawdust (A) that does not pass through the sorter (15) with a grinder (16); Separating the air and the sawdust (A) by suctioning the sawdust (A) with the second cyclone dust collector (18); The filter bag dust collector 19 is composed of a process of separating the air and dust by collecting dust in the sawdust raw material manufacturing unit 10.

Here, the sorter 15 is preferably to screen the sawdust (A) of 1.5 to 2.5mm size, it can be arbitrarily adjusted in size by the setting of the strainer if necessary.

The sawdust raw material drying step (S2) is a process of temporarily storing the sawdust (A) produced in the underground hopper 21; Transferring sawdust (A) stored in the underground hopper (21) in a horizontal direction with a first screw feeder (21 '); Moving the sawdust (A) upward with a bucket elevator (22); Temporarily storing sawdust (A) in the storage hopper 23; Transferring a sawdust (A) stored in the storage hopper (23) by a predetermined amount to a second screw feeder (24); Drying the sawdust introduced into the drying apparatus 25; Separating dust from air by sucking dust generated by the drying apparatus 25; Recovering waste heat from the air separated by the waste heat recoverer 28; The hot air supplier 29 is made of a process for supplying hot air to the drying device (25).

Here, the moisture content of the sawdust (A) dried through the drying device 25 is 14 to 16%, the temperature is 70 to 80 ℃, the drying device 25 before the flat die pellet machine 34 to maintain the water content It is preferable to add a water supply device for supplying water to the).

The renewable fuel forming step (S3) is a process of separating the air and sawdust (A) by sucking the sawdust (A) with a fourth cyclone dust collector (31); Temporarily storing the dry sawdust (A) introduced into the dry sawdust storage tank (32); Adjusting the moisture content of the sawdust while transferring the dry sawdust (A) by a predetermined amount to the mixing quantitative feeder (33); Introducing a sawdust (A) into a flat die pellet machine (34) and forming the pellet into a pellet type; Transferring the fuel pellets formed into the belt conveyor 35; Discharging the fuel pellets by a predetermined amount to the metering feeder 36; Cooling the fuel pellets with a cooler 37; The fifth cyclone dust collector 38 is configured to collect the exhaust discharged from the cooler 37 and separate the dust and air.

Here, the pressure-sensitive adhesive supply device 33a for supplying an adhesive may be added to the mixed quantitative feeder 33, and the fuel pellets manufactured by the renewable fuel forming process S3 may have a diameter of 6 to 10 mm and a length of 20 to 30 mm. desirable.

In addition, the product packaging process (S4) is the process of separating the dust and the product from the fuel pellet product is transported through the pipe (P5) to the first product selector (41); Temporarily storing the products selected by the first product selector 41 in a first product storage tank 42; Packing the product with the packing means 43; Separating dust and products from the fuel pellet product transferred through the pipe P5 and the pipe P6 to the second product selector 44; Temporarily storing products selected by the second product selector 44 in a second product storage tank 45; Exporting the product through the up and down chute 46; The filter bag dust collector 47 is composed of a process of collecting and treating the dust separated by the second product selector (44).

Here, the product selection in the first product selector 41 increases the diameter of the first product selector 41 than the diameter of the pipe P5 to be introduced so that the air and the product are separated by the method in which the product naturally falls due to its own weight. The product is separated and the product is transferred to the second product selector 44 through the pipe P6 by installing a gate switch 41a in the first product selector 41 to block the drop of the product.

In addition, the process of packaging the product by the packaging means 43 may be packed in units of various weights, such as 20kg, 500 ~ 1,000kg, it is possible to wrap a predetermined amount of the packaged product by the wrapping machine 43b, packaging When the product is loaded into the truck or the like without being loaded, the product is loaded onto the truck by using the up / down chute 46 having the second product selector 44 and the vibration feeder 46a.

Next, the operation of the present invention will be described in detail as an embodiment of making a pellet-type renewable fuel by actually producing sawdust using wood-based and herbal-based raw materials.

Example

Fuel pellets were manufactured as follows using a pellet type renewable fuel production system and production method using sawdust of wood and herbal raw materials.

In the sawdust raw material manufacturing process (S1), first, wood-based and herbaceous-based raw materials were collected, and the collected wood-based raw materials were peeled using the peeler 11, and then the wood peeled with the shredder 12 was crushed. Subsequently, the crushed sawdust (A) is introduced into the first cyclone dust collector (14) in a manner that blows off using a turbo blower (13) to separate air and sawdust (A), and the separated sawdust (A) is sorted ( 15) and screened.

Here, the sorter 15 employs a strainer that passes a sawdust A having a size of 2 mm, and sawdust A that does not pass through the strainer is recovered by the grinder 16 and regrind by the turbo blower 13. 1 was sent to the cyclone dust collector 14 to be introduced to the sorter 15 again.

Subsequently, the sawdust (A) that passed through the sorter 15 is suctioned by the second cyclone dust collector 18 to separate air and sawdust (A), and then loaded on a predetermined ground to complete the manufacture of the sawdust raw material. It was.

At this time, the dust generated in the sawdust raw material manufacturing process (S1) is collected by the filter bag dust collector 19 to separate the air and dust to discharge the air, the dust is to be transported to the 1 cyclone dust collector (14).

Next, in the sawdust raw material drying step (S2), the sawdust (A) manufactured in the underground hopper 21 installed so that the upper end is coincident with the ground is temporarily stored, and the stored sawdust (A) of the first screw feeder 21 ' Sawdust (A) stored in the storage hopper 23 by the operation of the second screw feeder 24 and then stored in the storage hopper 23 by sequentially moving in the horizontal direction and up by the operation of the bucket elevator 22 Was introduced into the drying apparatus 25 by a fixed amount.

Here, the drying apparatus 25 is composed of a third screw feeder 25a, an internal rotating drum 25b and an external rotating drum 25c, and employs a drying apparatus 25 having a double drum structure to provide high drying efficiency in a short time. Drying is made, and hot air is supplied to the drying apparatus 25 by the hot air supplier 29, and the waste heat recovered by the waste heat recovery 28 is introduced into the hot air supplier 29 so that the present invention is a renewable fuel production system of the present invention. To reduce the energy consumption.

In addition, at the inlet side and the outlet side of the sawdust (A) of the drying device 25 is installed separately the sensor means for detecting the function of the tobacco (A) to dry by analyzing the detection signal of the sensor means by the CPU of the system control unit 50 The moisture content of the sawdust (A) can be accurately known, and the operation of the renewable fuel production system according to the moisture content of the sawdust (A) was to be automatically controlled.

In this way, the moisture content of the dried sawdust (A) was 15%, and the dried sawdust (A) was introduced into the fourth cyclone dust collector (31) in the new and renewable fuel forming process (S3) to air and dried sawdust. (A) was separated and then temporarily stored in the dry sawdust storage tank (32).

Here, the dry sawdust storage tank 32 is provided with a low leveler 32a capable of detecting a minimum storage amount of dried sawdust A and a high leveler 32b detecting a maximum storage amount of dried sawdust A. For example, when the low leveler 32a detects a minimum amount of dried sawdust A, the new sawtooth storage tank 32 is operated to operate a new and renewable fuel production system in front of the dry sawdust storage tank 32. When A) is automatically introduced and the high leveler 32b detects the maximum storage amount of the dried sawdust A, the operation of the renewable fuel production system in front of the dry sawdust storage tank 32 is automatically stopped and dried. The introduction of the sawdust (A) into the dry sawdust storage tank 32 was stopped.

Subsequently, by operating the mixing quantitative feeder 33 to transfer the dry sawdust A by a fixed amount, a water supply means having a spray nozzle 33c is provided to the mixing quantitative feeder 33 to automatically adjust the moisture content of the sawdust A. After adjusting, the sawdust (A) having a water content adjusted thereto was introduced into a flat die pellet machine 34 to form a fuel pellet having a diameter of 6 mm and a length of 20 mm. Subsequently, the fuel pellets formed by the operation of the belt conveyor 35 are introduced into the cooler 37 via the metering feeder 36 to cool the fuel pellets to room temperature, and the exhaust discharged from the cooler 37 is collected to collect the fifth. The cyclone dust collector 38 is separated into dust and air, and the separated air is discharged to the outside, and the dust is introduced into the dry sawdust storage tank 32.

Next, the fuel pellet product molded and cooled in the product packaging process S4 is sorted by the first product sorter 41 and temporarily stored in the first product storage tank 42, and then stored in the first product storage tank 42. The fuel pellets were taken out in a weight unit of 20 kg and packed with the packing means 43. In addition, the packaged products were stacked by wrapping the wrapping machine (43b) by 50 bags.

As a result of actually using the packaged fuel pellets as a fuel for steam generation, such as fuel for heating material, fuel for cogeneration plant, and sauna room of a commercial building, it can be confirmed that the fuel having excellent thermal efficiency that can replace existing coal or fossil fuel. In particular, it was confirmed that CO2 emissions, called greenhouse gases, can be reduced by more than 1/12 compared with conventional coal or fossil fuels.

In addition, the packing weight unit of the fuel pellet product in the product packaging process (S4) can be set to 20kg, 500 to 1,000kg, etc., and can also be packed in a bag unit, as well as the gate switch in the first product selector (41). Operate (41a) to shut off the discharge of fuel pellets to the first product storage tank 42, transfer the fuel pellets to the second product selector 44 through the pipe P5 and pipe P6. The pellet product may be stored in the second product storage tank 45 to operate the up / down chute 46 having the vibrating feeder 46a from the second product storage tank 45 to load and unload the fuel pellet product in the bulk truck.

Here, the fuel stored in the first and second product storage tanks 42 and 45 is installed in the first and second product storage tanks 42 and 45 by installing a low leveler and a high leveler, similarly to the dry sawdust storage tank 32. According to the amount of the pellet product, the fuel pellet product is automatically supplied into the first and second product storage tanks 42 and 45 or the fuel pellet product is automatically discharged from the first and second product storage tanks 42 and 45.

While the present invention has been described as a preferred embodiment, the present invention is not limited thereto, and various modifications can be made without departing from the gist of the invention.

1 is a block diagram of a pellet type renewable fuel production system using the present invention sawdust,

Figure 2 is a detailed configuration of the pellet type renewable fuel production system using the present invention,

3 is a cross-sectional view of the drying apparatus according to the present invention,

4 is a cross-sectional view of the mixed quantitative feeder according to the present invention;

5 is a flowchart illustrating a pellet type renewable fuel production method using the present invention.

Description of the Related Art

10: sawdust raw material manufacturing unit 11: peeling machine

12: crusher 13: turbo blower

14: first cyclone dust collector 15: sorting machine

16: grinder 17: blower

18: second cyclone dust collector 19: filter cloth dust collector

20: sawdust raw material drying unit 21: underground hopper

21 ': first screw feeder 22: bucket elevator

23: storage hopper 23a: low leveler

23b: high leveler 24: second screw feeder

25 drying device 25a third screw feeder

25b: inner rotating drum 25c: outer rotating drum

25d: feed wing 26: third cyclone dust collector

27: 3rd blower 28: waste heat recovery

29: hot air supply 29a: fourth blower

30: renewable fuel molding unit 31: fourth cyclone dust collector

32: dry sawdust storage tank 32a: low leveler

32b: high leveler 33: mixed-quantity feeder

33a: casing 33b, 33b ': rotating shaft

33c: injection nozzle 33d: feed wing

34: flat die pellet machine 35: belt conveyor

36: fixed-quantity feeder 37: cooler

37a: cold air blower 38: fifth cyclone dust collector

38a: exhaust blower 40: product packaging part

41: first product sorter 42: first product storage tank

43: packaging means 43a: heat sealer

43b: lapping machine 44: second product selector

45: second product storage tank 46: up and down chute

46a: vibration feeder 47a: discharge blower

47: fifth cyclone dust collector 48: filter cloth dust collector

48a: suction blower 50: system control

51: air compressor 52: computerized control equipment

A: Sawdust D: Bulk Truck

P1 to P6: Piping V1, V2: Valve

Claims

Sawdust raw material manufacturing unit 10 for grinding the wood-based and herbaceous raw materials to produce a sawdust raw material; A sawdust raw material drying unit 20 for drying the sawdust raw material manufactured by the sawdust raw material manufacturing unit 10; Renewable fuel molding unit 30 for molding a sawdust raw material into a pellet type renewable fuel products; A product packaging part 40 for packaging the molded renewable fuel; In a pellet type renewable fuel production system using a sawdust consisting of a system control unit 50 for controlling the pellet type renewable fuel production system;

The sawdust raw material manufacturing unit 10 is a peeling machine 11 to peel the wood-based raw material; A crusher 12 for crushing the peeled wood; A turbo blower 13 which blows the sawdust A formed by crushing with air and passes it through the pipe P1; A first cyclone dust collector (14) for suctioning sawdust (A) to separate air and sawdust (A); A sorter (15) for sorting the sawdust (A) transferred from the first cyclone dust collector (14) through a pipe (P2) and an airlock valve (V1) according to size; A grinder 16 for regrinding sawdust A which does not pass through the sorter 15; A blower (17) for conveying the sawdust (A) passing through the sorter (15) through a pipe (P3) and a valve (V1); A second cyclone dust collector (18) separating the air and the sawdust (A) by suctioning the sawdust (A) through the pipe (P3); Pellet-type renewable fuel production system using a sawdust, characterized in that the filter bag dust collector (19) having a suction blower (19a) for collecting dust in the sawdust raw material manufacturing unit 10 to separate the dust and air.

delete

The sawdust raw material drying unit 20 is an underground hopper (21) for temporarily storing the sawdust produced in the sawdust raw material manufacturing unit 10, the upper end is installed in parallel with the ground; A first screw feeder 21 'for transporting the sawdust A stored in the underground hopper 21 in a horizontal direction; A bucket elevator 22 for moving the sawdust A conveyed to the first screw feeder 21 'upwardly; A storage hopper 23 for temporarily storing the transferred sawdust A; A second screw feeder 24 for conveying the sawdust A stored in the storage hopper 23 by a predetermined amount; A drying device 25 for drying the sawdust introduced; A third cyclone dust collector (26) which separates air and dust by sucking dust generated in the drying device (25); A third blower (27) for delivering air separated from the third cyclone dust collector (26); A waste heat recovery unit 28 for recovering waste heat from the air introduced; Pellet-type renewable fuel production system using a sawdust, characterized in that consisting of a hot air supply (29) having a fourth blower (29a) for supplying hot air to the drying device (25).

According to claim 3, wherein the storage hopper 23 is provided with a low leveler (23a) for detecting the minimum amount of sawdust (A) stored and a high leveler (23b) for detecting the maximum amount of sawdust (A) Pellet-type renewable fuel production system using sawdust.

4. The drying apparatus 25 according to claim 3, wherein the drying device 25 is constituted by a third screw feeder 25a, an internal rotating drum 25b, and an external rotating drum 25c to form a double drum structure, and an internal rotating drum 25b. Pellet-type renewable fuel production system using a sawdust, characterized in that the inner peripheral edge and the inner circumference of the outer rotary drum (25c) is equipped with a plurality of transfer blades so that the sawdust (A) is transferred in the set transport direction.

According to claim 1, The renewable fuel molding unit 30 is a fourth cyclone dust collector (Sec) to suck the sawdust (A) from the drying device 25 through the pipe (P4) to separate the air and sawdust (A) 31); Dry sawdust storage tank 32 for temporarily storing the introduced dry sawdust (A); Mixed-quantity feeder 33 for controlling the moisture content of the sawdust while transferring the dry sawdust (A) by a predetermined amount from the dry sawdust storage tank 32; A flat die pellet machine (34) for introducing a sawdust (A) from the mixed quantitative feeder (33) and forming a pellet; A belt conveyor 35 for conveying the shaped fuel pellets; A fixed quantity feeder 36 for discharging the fuel pellets by a predetermined amount from the belt conveyor 35; A cooler (37) having a cold air blower (37a) for cooling fuel pellets introduced by a predetermined amount by said metering feeder (36); Production of pellet-type renewable fuel using sawdust comprising a fifth cyclone dust collector 38 having an exhaust blower 38a for collecting the exhaust discharged from the cooler 37 and separating it into dust and air. system.

According to claim 6, The dry sawdust storage tank 32 has a low leveler (32a) for detecting the minimum storage amount of the sawdust (A) to be stored and a high leveler (32b) for detecting the maximum storage amount of the sawdust (A) Pellet-type renewable fuel production system using sawdust, characterized in that installed.

The mixing quantity feeder (33) according to claim 6, wherein the mixing quantitative feeder (33) is provided with two rotary shafts (33b, 33b ') installed in parallel in the casing (33a) and the casing (33a), and the injection nozzle (33c) for supplying water. Consisting of the rotary shafts 33b, 33b 'each of the outer periphery is provided with a plurality of feed blades (33d) so that sawdust (A) is transported in the set transport direction and the feed blade (33d) of the rotary shaft (33b) Pellet-type renewable fuel production system using a sawdust, characterized in that the feed blade (33d) of the rotary shaft (33b ') does not overlap each other.

The product packaging part 40 of claim 1, further comprising: a first product selector (41) for separating impurities (dust) and products from the fuel pellet product conveyed through the pipe (P5); A first product storage tank 42 for temporarily storing the products selected by the first product selector 41; Packaging means (43) having a heat sealer (43a) and a wrapping machine (43b) for carrying out and packing products stored in the first product storage tank (42); A second product selector 44 which stops the function of the first product selector 41 and separates the dust and the product from the fuel pellet product conveyed through the pipe P5 and the pipe P6; A second product storage tank 45 for temporarily storing the products selected by the second product selector 44; An up and down chute 46 connected to a lower end of the second product storage tank 45 and having a vibration feeder 46a for carrying out products stored in the second product storage tank 45 to the bulk truck D; A fifth cyclone dust collector (47) having an exhaust blower (47a) for collecting and treating the dust separated by the second product selector (44); Pellet-type renewable fuel production system using a sawdust, characterized in that made of a filter bag dust collector (48) having a suction blower (48a) for collecting dust in the product packaging unit 40 to separate the dust and air.

According to claim 1, wherein the system control unit 50 comprises an air compressor (51) for generating and supplying air required by the new renewable fuel production system of the present invention; Computational control equipment 52 comprising a memory in which a control program necessary for controlling the renewable fuel production system is stored, a display indicating an operating state of the CPU, a renewable fuel production system, an operation switch, and an operation panel provided with setting buttons. Pellet-type new renewable fuel production system using a sawdust, characterized in that consisting of.

Sawdust raw material manufacturing process (S1) for crushing wood and herbal raw materials to produce sawdust raw materials; Sawdust raw material drying step (S2) of drying the sawdust raw material manufactured in the sawdust raw material manufacturing process (S1); Renewable fuel molding process (S3) for molding the sawdust raw material into a pellet type renewable fuel products; In the pellet-type renewable fuel production method using a sawdust consisting of a product packaging process (S4) for packaging the molded renewable fuel;

The sawdust raw material manufacturing process (S1) is a process of peeling the wood-based raw material with a peeler 11; Pulverizing the wood peeled by the crusher 12; Separating the air from the sawdust (A) by sucking the first sawdust (14) crushed sawdust (A); Selecting a sawdust (A) with a sorter (15); Regrinding the sawdust (A) that does not pass through the sorter (15) with a grinder (16); Separating the air and the sawdust (A) by suctioning the sawdust (A) with the second cyclone dust collector (18); Pellet-type dust regenerator (19) to collect the dust in the sawdust raw material manufacturing unit 10 by the process of separating the air and dust, pellet type new renewable fuel production method using a sawdust.

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12. The method of claim 11, wherein the sorter (15) selects sawdust (A) having a size of 1.5 to 2.5 mm.

The method of claim 11, wherein the sawdust raw material drying step (S2) comprises the steps of temporarily storing the sawdust (A) produced in the underground hopper 21; Transferring the sawdust (A) stored in the underground hopper (21) in a horizontal direction with a first screw feeder (21 '); Moving the sawdust (A) upward with a bucket elevator (22); Temporarily storing sawdust (A) in the storage hopper 23; Transferring a sawdust (A) stored in the storage hopper (23) by a predetermined amount to a second screw feeder (24); Drying the sawdust introduced into the drying apparatus 25; Separating dust from air by sucking dust generated by the drying apparatus 25; Recovering waste heat from the air separated by the waste heat recoverer 28; Pellet-type renewable fuel production method using a sawdust, characterized in that made of a process for supplying hot air to the drying device 25 with a hot air feeder (29).

15. The method of claim 14, wherein the moisture content of the sawdust (A) dried through the drying device 25 is 14 to 16%, the temperature is 70 to 80 ℃, before the flat die pellet machine 34 to maintain the moisture content Pellet-type renewable fuel production method using a sawdust, characterized in that the water supply device for supplying water to the water.

The method of claim 11, wherein the renewable fuel forming step (S3) comprises the steps of separating the air and sawdust (A) by sucking the sawdust (A) with a fourth cyclone dust collector (31); Temporarily storing the dry sawdust (A) introduced into the dry sawdust storage tank (32); Adjusting the moisture content of the sawdust while transferring the dry sawdust (A) by a predetermined amount to the mixing quantitative feeder (33); Introducing a sawdust (A) into a flat die pellet machine (34) and forming the pellet into a pellet type; Transferring the fuel pellets formed into the belt conveyor 35; Discharging the fuel pellets by a predetermined amount to the metering feeder 36; Cooling the fuel pellets with a cooler 37; Pellet-type renewable fuel production method using a sawdust, characterized in that the fifth cyclone dust collector (38) to collect the exhaust discharged from the cooler (37) to separate the dust and air.

The pressure-sensitive adhesive supply device (33a) for supplying the pressure-sensitive adhesive is added to the mixed quantitative feeder (33), and the fuel pellets produced by the renewable fuel forming process (S3) have a diameter of 6 to 10 mm and a length of 20. Pellet-type renewable fuel production method using a sawdust, characterized in that ~ ~ 30mm.

The method of claim 11, wherein the product packaging process (S4) comprises the steps of separating the dust and the product from the fuel pellet product is transported through the pipe (P5) to the first product selector (41); Temporarily storing the products selected by the first product selector 41 in a first product storage tank 42; Packing the product with the packing means 43; Separating dust and products from the fuel pellet product transferred through the pipe P5 and the pipe P6 to the second product selector 44; Temporarily storing products selected by the second product selector 44 in a second product storage tank 45; Exporting the product through the up and down chute 46; Collecting and treating the dust separated by the second product selector 44 with an exhaust blower 47; Pellet-type new renewable fuel production method using a sawdust, characterized in that consisting of a process for separating the air and dust by collecting dust in the product packaging unit 40 with a filter cloth dust collector (48).

19. The method of claim 18, wherein the product selection in the first product selector 41 is such that the product naturally falls due to its own weight by making the diameter of the first product selector 41 larger than the diameter of the pipe P5 to be introduced. Air and the product is separated by, and the product is transferred to the second product selector 44 through the pipe (P6) by installing the gate switch 41a in the first product selector 41 to block the fall of the product. Pellet-type renewable fuel production method using a sawdust, characterized in that.

20. The method of claim 19, wherein the packaging of the product by the packaging means 43 is to wrap the product in a predetermined weight unit, and includes a lapping process of wrapping a predetermined amount of the packaged product by the wrapping machine 43b. Sawdust, characterized in that the unloaded product is loaded and unloaded in a truck or the like using the up and down chute 46 having a second product selector 44 and the vibration feeder 46a when the product is loaded into the container Pellet-type renewable fuel production method.

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