WO2005052100A1

WO2005052100A1 - A system and method for manufacturing solid fuel form waste

Info

Publication number: WO2005052100A1
Application number: PCT/KR2004/003093
Authority: WO
Inventors: Jae Youl Kim
Original assignee: Jae Youl Kim
Priority date: 2003-11-26
Filing date: 2004-11-26
Publication date: 2005-06-09

Abstract

The present invention relates to an apparatus for manufacturing waste solid fuel and method thereof, wherein solid fuel is manufactured using waste. The apparatus The present invention relates to an apparatus for manufacturing waste solid fuel comprises a waste inflow unit 10 for firstly removing metallic waste from received waste; a crusher 30 for crushing waste P via the waste inflow unit 10; an underwater separator 40 for secondly removing metallic waste from the waste crushed by the crusher 30 by way of a difference in specific gravity; a dehydrator 50 for dehydrating the waste from the underwater separator 40; a drier 60 for drying the waste from the dehydrator 50; a pulverizer 70 for pulverizing the waste from the drier 60; and a compression and shaping machine 90 for compressing the pulverized waste into solid fuel. The method comprises the steps of firstly removing metallic waste from conveyed waste; crushing the waste from which the metallic waste is firstly removed; secondly removing metallic waste from the crushed waste by using a difference in specific gravity; dehydrating the waste from which the metallic waste is removed; drying the dehydrated waste; pulverizing the dried waste; and compressing and shaping the pulverized waste, thus producing solid fuel.

Description

A SYSTEM AND METHOD FOR MANUFACTURING SOLID FUEL FORM WASTE

[Technical Field] The present invention relates to an apparatus for manufacturing waste solid fuel and method thereof, wherein solid fuel is manufactured using waste.

[Background Art] With the industrialization being in progress and population being on the rise, a lot amount of wastes is generated. These wastes can be classified into combustible wastes such as a class of paper, a class of wood, a class of rubber and leather, a class of animal and

plant dregs, and a class of sludge, and incombustible wastes such as a class of slag, a class of combustibles, a class of dust, a class of building waste materials, a class of metal and super ceramics, and a

class of waste lime and plaster. Of them, the amount of combustible wastes increase as industry development is in progress. Theses combustible wastes are mainly processed through incineration.

However, as wastes are processed through incineration, air pollution worsens. More particularly, generation of a large amount of

environmental hormone such as dioxin becomes the cause of various cancers. Furthermore, although the demand for an incineration plant for processing wastes increases, foundation of the incineration plant is not easy due to the NIMBY syndrome. Thus, the problem of processing the wastes becomes worse.

[Disclosure] [Technical Problem] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus for manufacturing waste solid fuel and method thereof, wherein the problem of incineration is solved and energy is reproduced by reprocessing wastes into solid fuel.

[Technical Solution]

To achieve the above object, according to the present invention, there is provided an apparatus for manufacturing waste solid fuel, comprising a waste inflow unit 10 for firstly removing metallic waste

from received waste; a crusher 30 for crushing waste P via the waste inflow unit 10; an underwater separator 40 for secondly removing

metallic waste from the waste crushed by the crusher 30 by way of a difference in specific gravity; a dehydrator 50 for dehydrating the waste from the underwater separator 40; a drier 60 for drying the

waste from the dehydrator 50; a pulverizer 70 for pulverizing the

waste from the drier 60; and a compression and shaping machine 90 for

compressing the pulverized waste into solid fuel.

[Description of Drawings]

FIG. 1 is a view illustrating the construction of an apparatus

for manufacturing waste solid fuel according to the present invention; FIG. 2 is an extracted view of a crusher in FIG. 1; FIG. 3 is an extracted view of an underwater separator in FIG.

l;

FIG. 4 is an extracted view of a dehydrator in FIG. 1; and

FIG. 5 is an extracted view of a drier and a pulverizer in FIG.

1.

[Best Mode]

In the present invention, the crusher 30 comprises a

crusher body 31 having a large inlet 31a and a small inlet 31b formed

in, a plurality of crusher drums 32, 33, 34, 35 and 36 disposed within

the crusher body 31, for crushing the introduced waste, the crusher

drums being sequentially disposed in order of a smaller diameter, and

driving units 37 for rotating the crusher drums, wherein the interior

of the crusher body 31 has a semi -cylindrical shape, and has a plurality of crushing vanes 31C formed on, and the crusher drums 32,

33, 34, 35 and 36 have a plurality of crusher gears 32a, 33a, 34a, 35a

and 36a formed on the outer surfaces of the cylindrical drums,

respectively, in a crossing manner. In the present invention, the underwater separator 40 serves to

secondly remove metallic waste from the waste, which is crushed by the

crusher 30, and comprises a water tank 41 for containing water, the

water tank having an inflow port 41a and an outlet port 41b formed in;

transfer drums 43 that rotate within the water tank 41, the transfer

drums having a plurality of transfer vanes 43a formed on, a rotary

driving units (not shown) for rotating the transfer drums 43; a valve

48 disposed in the outlet port; and a collection container 49 for

collecting the metallic waste discharged through the valve 48.

To achieve the above object, according to the present invention,

there is provided a method of manufacturing waste solid fuel,

comprising the steps of firstly removing metallic waste from conveyed

waste; crushing the waste from which the metallic waste is firstly

removed; secondly removing metallic waste from the crushed waste by

using a difference in specific gravity; dehydrating the waste from

which the metallic waste is removed; drying the dehydrated waste;

pulverizing the dried waste; and compressing and shaping the

pulverized waste, thus producing solid fuel. [Mode for Invention]

An apparatus for manufacturing waste solid fuel and method

thereof according to the present invention will now be described in

detail with reference to the accompanying drawings. FIG. 1 is a view illustrating the construction of an apparatus

for manufacturing waste solid fuel according to the present invention.

FIG. 2 is an extracted view of a crusher in FIG. 1. FIG. 3 is an

extracted view of an underwater separator in FIG. 1. FIG. 4 is an

extracted view of a dehydrator in FIG. 1. FIG. 5 is an extracted view

of a drier and a pulverizer in FIG. 1.

Referring to FIGS. 1 to 5, The apparatus for manufacturing the

waste solid fuel according to the present invention includes a waste

inflow unit 10 for firstly removing metallic waste from received waste,

a pressure transfer unit 20 for transferring the waste P via the waste

inflow unit 10, a crusher 30 for crushing the waste received from the

pressure transfer unit 20 into large dumps, an underwater separator 40

for secondly removing metallic waste from the waste crushed by the

crusher 30 by way of a difference in specific gravity, a dehydrator 50

for dehydrating the waste from the underwater separator 40, a drier 60

for drying the waste from the dehydrator 50, a pulverizer 70 for

pulverizing the waste from the drier 60 into small dumps, a silo 80

for storing the waste pulverized in the pulverizer 70, and a

compression and shaping machine 90 for compressing the waste received from the silo 80 into solid fuel. The waste, which is compressed and

shaped in the compression and shaping machine 90, becomes the solid

fuel. The solid fuel is transferred to the outside through a mesh

conveyer 95. The waste P is loaded at a given location. The loaded waste P

is introduced into the waste inflow unit 10 by means of a first

transfer conveyer Cl.

The waste inflow unit 10 is for firstly removing metallic waste

(incombustibles) of large dumps from the collected waste. The waste

inflow unit 10 has a magnet conveyer 15 installed at the top of a

second conveyer C2. An electromagnet is disposed within the magnet

conveyer 15, and serves to selectively separate the metallic waste

from the waste that is conveyed by means of the transfer conveyer C.

This magnet conveyer 15 is well known in the art, and further

description on it will be thus omitted.

The pressure transfer unit 20 is for forcibly transferring the

waste from the magnet conveyer 15 to the inlet of the crusher 30. It

has a pressure plate 22, which is moved front and rear by means of an

oil pressure cylinder 21. In this time, a curved face 22a is formed

in front of the pressure plate 22, and serves to forcibly transfer the

waste in an effective way.

The crusher 30 includes a crusher body 31 in which a large inlet

31a and a small inlet 31b are formed, a plurality of crusher drums 32, 33, 34, 35 and 36 disposed within the crusher body 31, for crushing

the introduced waste, and driving units 37 for rotating the crusher

drums. In this time, the crusher drums are sequentially disposed in

order of a smaller diameter. The interior of the crusher body 31 has a semi-cylindrical shape,

and has a plurality of crushing vanes 31C formed on. The crusher

drums 32, 33, 34, 35 and 36 have a plurality of crusher gears 32a, 33a,

34a, 35a and 36a formed on the outer surfaces of the cylindrical drums,

respectively, in a crossing manner. Crushing spaces are formed

between the tops of the crusher drums and the crusher body 31. It is

preferred that the crushing spaces are sequentially narrowed. This

makes the crushing pressure weighted by the crusher gears and the

crushing vanes, and also facilitates the transfer of the waste. Each

of the driving units 37 consists of a motor and a decelerator, and is

thus connected to the crusher drum in an organic manner. For example,

a pulley can be installed in the shaft of the motor and the

decelerator, and the pulley can be connected to a belt. The

construction of the driving units 37 is a conventional one. Further

description on it will be thus omitted. The waste crushed by the crusher 30 is conveyed to the

underwater separator 40 by means of a third transfer conveyer C3. In

this time, the third transfer conveyer C3 can be a conveyer of a screw

type. The underwater separator 40 serves to secondly remove the

metallic waste from the waste, which is crushed by the crusher 30, by

way of specific gravity. The underwater separator 40 includes a water

tank 41 for containing water, the water tank having an inflow port 41a

and an outlet port 41b formed in, transfer drums 43 that rotate within

the water tank 41, the transfer drums having a plurality of transfer

vanes 43a formed on, a rotary driving units (not shown) for rotating

the transfer drums 43, a valve 48 disposed in the outlet port, and a

collection container 49 for collecting the metallic waste discharged

through the valve 48. In this time, the transfer vanes 43a preferably

has nets formed in.

The water tank 41 has a structure in which the inflow port 41a

is wide and the outlet port 41b is tapered. The driving units are

substantially the same as the driving units 37 described in the

crusher body 31. Detailed description on them will be thus omitted.

In the underwater separator 40, if the transfer drums 43 rotate,

the surface of water laps. Heavy metallic waste subsides, and light

plastic, wood, etc. rise to the surface of water, clue to a difference

in specific gravity of water. In this time, since water passes

through the net, only floated light wastes are conveyed to the

dehydrator 50.

Meanwhile, if a large amount of the metallic wastes is

accumulated on the water tank 41, the valve 48 is opened so that the metallic wastes are collected in the collection container 49. If a

sufficient amount of the metallic wastes is accumulated, they are

discharged toward the outside.

The waste from which the metallic waste is secondly removed in

the underwater separator 40 is conveyed to the dehydrator 50 by means

of a fourth transfer conveyer C4. In this time, the fourth transfer

conveyer C4 is a conveyer of a screw type.

The dehydrator 50 serves to firstly remove moisture from the

waste from the underwater separator 40. The dehydrator 50 includes a

housing 51 having a cylindrical shape, wherein the housing 51 has a

drop port 51a formed at one upper side and an outlet port 51b formed

at the other lower side, a screw 53 disposed within the housing 51,

and a driving unit 57 for rotating the screw 53. In this time, the

driving unit 57 is similar as that used in the crusher or the

underwater separator. Through this structure, the waste introduced

into the drop port 51a is compressed and conveyed to the outlet port

51b by means of the screw 53. Moisture contained in the waste is

removed during the compressed convey process. The removed moisture is

discharged toward the outside through a duct 54 disposed near the

outlet port .

The waste from which moisture is removed in the dehydrator 50 is

conveyed to the drier 60 by means of a fifth transfer conveyer C5. In

this time, the sixth transfer conveyer C5 can be a conveyer of a screw type. The drier 60 serves to secondly remove moisture from the waste

from the dehydrator 50. The drier 60 includes a housing 61 having a

cylindrical shape, wherein the housing 61 has a drop port 61a formed

at one upper side and an outlet port 61b formed at the other lower

side, a rotary support unit 62 for rotatably supporting both sides of

the housing 61, a cooling material 63 coated on the inner

circumference of the housing 61, spiral guide vanes 64 projected from

the inner circumference of the cooling material 63 in a spiral

direction, a hot air machine 65 for supplying hot air into the housing

61, and a driving unit 67a, 67b, 67c for rotating the housing 61.

The driving unit 67a, 67b, 67c can be implemented in a variety

of shapes. For example, the driving unit can have a structure for

rotating the whole housing 61. The driving unit 67a, 67b, 67c can

include a housing gear 67a formed on an outer circumference of the

housing 61, a deceleration gear 67b engaged with the housing gear 67a

at the bottom of the housing 61, and a motor 67c for rotating the

deceleration gear 67b. Accordingly, if the deceleration gear 67b is

rotated by the motor 67c, the housing 61 is rotated with it being

supported by the rotary support unit 62.

Through this structure, if the waste hydrated through the drop

port 61a is slowly introduced in a state where the driving unit 67a,

67b, 67c slowly rotates the housing 61 and the hot air machine 65 flows hot air into the housing 61, the waste is slowly moved toward

the outlet port 6.1b through the spiral guide vanes 64 while being

turned over several times. Through this process, hot air removes

moisture within the waste, thus drying the waste. The pulverizer 70 serves to pulverize the waste, which has

passed through the drier 60, into a powder shape. It includes a

housing 71 having a drop port 71a of a hopper type disposed at the top

and an outlet port 71b disposed at a lower side, a pulverizing gear 73

disposed within the housing 71, and a driving unit 77 for rotating the

pulverizing gear 73. In this time, the driving unit 77 is similar as

that used in the crusher 30 or the underwater separator 40. Further

description on it will be thus omitted.

Through this structure, the waste dried through the drop port

71a is pulverized into a power shape by means of the pulverizing gear

73, and is then discharged through the outlet port 71b.

The silo 80 temporarily stores powder waster, which is

pulverized by the pulverizer 70. This silo 80 can include a

conventional one.

The waste stored in the silo 80 is conveyed to the compression

and shaping machine 90 by means of a sixth transfer conveyer C6. The

sixth transfer conveyer C6 can be a conveyer of a screw type.

The compression and shaping machine 90 compresses the powder

waste stored in the silo 80 into solid fuel of a given shape. This compression and shaping machine 90 can be implemented into various

shapes. For example, the compression and shaping machine 90 can have

a structure in which a compression screw is installed within the

housing, or a structure in which the powder waste is compressed by a

piston driven by the oil pressure cylinder. This compression and

shaping machine 90 can have a variety of shapes depending upon the

shape or size of solid fuel to be fabricated.

A method of manufacturing solid fuel using the apparatus

constructed above will now be described. First, metallic waste is firstly removed from waste conveyed to

the waste inflow unit 10. This step is performed by the magnet

conveyer 15 of the waste inflow unit 10.

Next, the waste from which the metallic waste is firstly removed

is forcedly transferred to the crusher 30. This step is performed by

the pressure transfer unit 20.

The transferred waste is then crushed into dumps of a relatively

large size. This step is performed by the crusher 30.

Metallic waste is secondly removed from the crushed waste by

ways of a difference in specific gravity. This step is performed by

the underwater separator 40.

The waste from which the metallic waste is secondly removed is

dehydrated. This step is performed by the dehydrator 50.

Next, the dehydrated waste is dried. This step is performed by the drier 60.

The dried waste is pulverized. This step is performed by the

pulverizer 70.

The pulverized waste is conveyed to the silo 80 for temporary

storage.

Thereafter, the waste conveyed from the silo 80 is compressed

and shaped into solid fuel. This step is performed by the compression

and shaping machine 90.

While the present invention has been described with reference to

the particular illustrative embodiments, it is not to be restricted by

the embodiments but only by the appended claims. It is to be

appreciated that those skilled in the art can change or modify the

embodiments without departing from the scope and spirit of the present

invention.

[Industrial Applicability]

As described above, according to an apparatus for manufacturing

waste solid fuel and method of manufacturing solid fuel in accordance

with the present invention, solid fuel is reprocessed from waste.

Accordingly, there are effects in that the problem of incineration can

be solved, and solid fuel that can reproduce energy can be effectively

reproduced.

Claims

[Claims]

1. An apparatus for manufacturing waste solid fuel, comprising: a waste inflow unit 10 for firstly removing metallic waste from received waste; a crusher 30 for crushing waste P via the waste inflow unit 10; an underwater separator 40 for secondly removing metallic waste from the waste crushed by the crusher 30 by way of a difference in specific gravity; a dehydrator 50 for dehydrating the waste from the underwater separator 40; a drier 60 for drying the waste from the dehydrator 50; a pulverizer 70 for pulverizing the waste from the drier 60; and a compression and shaping machine 90 for compressing the pulverized waste into solid fuel.

2. The apparatus as claimed in claim 1, further comprising a silo 80 for temporarily storing the waste pulverized in the pulverizer 70.

3. The apparatus as claimed in claim 1, wherein the crusher 30 co pr i ses : a crusher body 31 having a large inlet 31a and a small inlet 31b formed in; a plurality of crusher drums 32, 33, 34, 35 and 36 disposed

within the crusher body 31, for crushing the introduced waste, the

crusher drums being sequentially disposed in order of a smaller

diameter; and driving units 37 for rotating the crusher drums, wherein the interior of the crusher body 31 has a semi-

cylindrical shape, and has a plurality of crushing vanes 31C formed on,

and the crusher drums 32, 33, 34, 35 and 36 have a plurality of

crusher gears 32a, 33a, 34a, 35a and 36a formed on the outer surfaces

of the cylindrical drums, respectively, in a crossing manner.

4. The apparatus as claimed in claim 1, wherein the underwater

separator 40 serves to secondly remove metallic waste from the waste,

which is crushed by the crusher 30, and comprises: a water tank 41 for containing water, the water tank having an

inflow port 41a and an outlet port 41b formed in; transfer drums 43 that rotate within the water tank 41, the

transfer drums having a plurality of transfer vanes 43a formed on, a

rotary driving units (not shown) for rotating the transfer drums 43; a valve 48 disposed in the outlet port; and a collection container 49 for collecting the metallic waste

discharged through the valve 48.

5. The apparatus as claimed in claim 4, wherein the transfer

vanes 43a has nets formed in.

6. A method of manufacturing waste solid fuel, comprising the

steps of: firstly removing metallic waste from conveyed waste; crushing the waste from which the metallic waste is firstly

removed; secondly removing metallic waste from the crushed waste by using

a difference in specific gravity; dehydrating the waste from which the metallic waste is removed; drying the dehydrated waste; pulverizing the dried waste; and compressing and shaping the pulverized waste, thus producing solid fuel .