U.S. patent application number 16/202806 was filed with the patent office on 2020-02-27 for pyrolysis gasification system.
The applicant listed for this patent is CHI JUNG JEON, Kentec Enviro Solutions LLC., SUNG CHUN KIM, JUN IL SONG. Invention is credited to CHI JUNG JEON, SUNG CHUN KIM, JUN IL SONG.
Application Number | 20200063050 16/202806 |
Document ID | / |
Family ID | 69587135 |
Filed Date | 2020-02-27 |
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United States Patent
Application |
20200063050 |
Kind Code |
A1 |
JEON; CHI JUNG ; et
al. |
February 27, 2020 |
PYROLYSIS GASIFICATION SYSTEM
Abstract
Provided is a pyrolysis gasification system including a hopper,
a loading chamber, a gas generating furnace, an ash discharge unit,
and an oxygen supply unit, wherein the loading chamber is provided
at an upper end thereof with a first sealing gate to seal the
loading chamber, and the gas generating furnace is provided at an
upper portion thereof with a second sealing gate to seal the gas
generating furnace, such that when the raw material is fed into the
gas generating furnace, external air is prevented from entering the
gas generating furnace and combustion gas in the gas generating
furnace is prevented from being discharged to an outside, whereby
oxygen is supplied into the gas generating furnace to increase the
content and concentration of carbon monoxide and hydrogen in
combustion gas generated during pyrolysis, and thus it is possible
to increase the production of syngas.
Inventors: |
JEON; CHI JUNG; (Bucheon-si,
KR) ; KIM; SUNG CHUN; (Seongnam-si, KR) ;
SONG; JUN IL; (Seongnam-si, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
JEON; CHI JUNG
KIM; SUNG CHUN
SONG; JUN IL
Kentec Enviro Solutions LLC. |
Bucheon-si
Seongnam-si
Seongnam-si
Duluth |
GA |
KR
KR
KR
US |
|
|
Family ID: |
69587135 |
Appl. No.: |
16/202806 |
Filed: |
November 28, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C10J 2300/1628 20130101;
C10J 2300/0959 20130101; C10J 2200/09 20130101; C10J 3/36 20130101;
C10J 2200/36 20130101; C10J 3/007 20130101; C10J 3/34 20130101;
C10J 3/30 20130101; C10J 3/82 20130101; C10J 2200/156 20130101;
C10J 2200/152 20130101 |
International
Class: |
C10J 3/00 20060101
C10J003/00; C10J 3/34 20060101 C10J003/34; C10J 3/82 20060101
C10J003/82 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 23, 2018 |
KR |
10-2018-0098565 |
Claims
1. A pyrolysis gasification system comprising: a hopper configured
such that raw material is fed thereinto; a loading chamber
configured such that the raw material fed into the hopper is
temporarily stored therein; a gas generating furnace configured
such that the raw material stored in the loading chamber is fed
thereinto, and pyrolyzed and incinerated; an ash discharge unit
configured to discharge ash completely pyrolyzed in the gas
generating furnace; and an oxygen supply unit configured to supply
oxygen into the gas generating furnace, wherein the loading chamber
is provided at an upper end thereof with a first sealing gate to
seal the loading chamber, and the gas generating furnace is
provided at an upper portion thereof with a second sealing gate to
seal the gas generating furnace, such that when the raw material is
fed into the gas generating furnace, external air is prevented from
entering the gas generating furnace and combustion gas in the gas
generating furnace is prevented from being discharged to an
outside.
2. The system of claim 1, wherein the first sealing gate includes:
a first door rotatably provided on a first side of the upper end of
the loading chamber by a first hinge rod; and a second door
rotatably provided on a second side of the upper end of the loading
chamber by a second hinge rod, and disposed to face the first door,
wherein the first hinge rod and the second hinge rod are rotated by
an elastic force of a spring or a drive motor.
3. The system of claim 1, wherein the second sealing gate includes:
a door member provided at a lower end of the loading chamber and
configured to be linearly moved in a horizontal direction to open
and close an inlet of the gas generating furnace; and a driving
unit configured to linearly move the door member, wherein the
driving unit includes: a wire connected to a front and a back of
the door member; a drive roller disposed in front of the door
member and configured such that the wire is wound therearound; a
driven roller disposed behind the door member and configured such
that the wire is wound therearound; and a drive motor connected to
the drive roller to rotate the drive roller.
4. The system of claim 1, wherein the oxygen supply unit includes:
a first nozzle configured such that multiple nozzles are provided
on a wall of a lower gas generating furnace while being spaced
apart from each other at a predetermined interval to uniformly
supply oxygen into the lower gas generating furnace; a second
nozzle configured to inject oxygen directly toward a bunting
portion of the raw material by increasing injection pressure
compared to the first nozzle; a first supply path provided on an
outer wall of the lower gas generating furnace and connected to the
first nozzle to supply oxygen to the first nozzle; and a second
supply path connected to the second nozzle to supply oxygen to the
second nozzle.
5. The system of claim 4, wherein the first nozzle is provided with
a first nozzle passage, and the first nozzle passage is provided at
an end portion thereof with a first nozzle opening opened at a
predetermined angle such that the oxygen injected into the first
nozzle passage diffuses into the gas generating furnace.
6. The system of claim 5, wherein the second nozzle is inserted
into the first nozzle passage, and is provided with a second nozzle
passage having a diameter smaller than a diameter of the first
nozzle passage, and the second nozzle passage is provided at an end
portion thereof with a second nozzle opening formed to be narrower
than the second nozzle passage so as to increase oxygen injection
pressure.
7. The system of claim 1, wherein the ash discharge unit includes:
a drum rotatably provided in an ash outlet formed at a lower end of
a lower gas generating furnace to discharge ash; a belt conveyor
disposed at a location below the drum to move the ash discharged
through the drum; and a water chamber provided at a lower portion
of the lower gas generating furnace with water filled therein, and
configured such that an end portion of the ash outlet of the lower
gas generating furnace is sunken under the water to prevent
external air from entering the gas generating furnace through the
ash outlet.
8. The system of claim 7, wherein the drum is provided with inflow
grooves at predetermined intervals to receive ash therein, and a
drive shaft of the drum is connected to a drive motor.
9. The system of claim 7, wherein the belt conveyor is provided in
the water chamber and disposed to be sunken under the water.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention relates to a pyrolysis gasification
system capable of producing syngas, from which chemical products
such as fuel gas or methanol are produced, by pyrolyzing raw
material in a gas generating furnace.
Description of the Related Art
[0002] Generally, an incinerator currently used generates a large
amount of ash, which is a residue after incineration. The
characteristics of incineration ash are unstable, so that
contaminants such as heavy metals may be released, and since a
large amount of gas is generated during incineration, costs are
high for removal of environmentally harmful substances such as
dust, sulfur compounds, and nitrogen oxides.
[0003] To solve this problem, a pyrolysis incinerator has been
developed that minimizes environmental pollutants generated during
incineration and minimizes fumes by completely combusting raw
material by pyrolysis.
[0004] The conventional pyrolysis incineration apparatus, as
disclosed in the document of Korean Patent No. 10-1483751
(registered Jan. 12, 2015), includes: a combustion unit configured
to combust an object to be incinerated fed thereinto at a high
temperature; a blowing unit provided in the combustion unit for
forcibly blowing outside air into the combustion unit to introduce
the outside air into the combustion unit; an auxiliary fuel
injection unit provided in the combustion unit for injecting
auxiliary fuel into the combustion unit to facilitate treatment of
residue of the object with a high water content, wherein the
combustion unit is configured such that a plurality of heat pipes
are provided on an inner side wall thereof to produce hot water and
hot air by using high temperature heat generated during
incineration of the object, and the blowing unit includes: at least
one blowing pipe provided on the inner side wall of the combustion
unit and configured to blow the air into the combustion unit; an
air inflow path provided in the combustion unit to be connected to
the blowing pipe and formed with an air inlet; and a blowing fan
provided to be connected to the air inflow path and configured to
forcibly blow the air to the air inflow path through the air
inlet.
[0005] However, the conventional incineration apparatus is
problematic in that since it injects outside air into the
combustion chamber, the content of carbon monoxide and hydrogen in
the syngas produced thereafter is lowered due to the nitrogen
contained in the air.
[0006] In addition, the conventional incineration apparatus is
problematic in that since the inside of the combustion chamber
cannot be sealed, the combustion gas in the combustion chamber may
flow out to the outside, and outside air may be introduced into the
combustion chamber.
[0007] The foregoing is intended merely to aid in the understanding
of the background of the present invention, and is not intended to
mean that the present invention falls within the purview of the
related art that is already known to those skilled in the art.
DOCUMENTS OF RELATED ART
[0008] (Patent Document 1) Korean Patent No. 10-1483751 (registered
Jan. 12, 2015)
SUMMARY OF THE INVENTION
[0009] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the related art, and it is an
object of the present invention to provide a pyrolysis gasification
system, which is configured to supply oxygen into the gas
generating furnace so as to increase the content and concentration
of carbon monoxide and hydrogen in combustion gas generated during
pyrolysis, whereby the production of syngas for producing chemicals
such as fuels for electricity production or methanol can be
improved.
[0010] Further, it is another object of the present invention to
provide a pyrolysis gasification system, in which the inside of the
gas generating furnace is sealed such that combustion gas in the
gas generating furnace is prevented from being discharged to the
outside and external air is prevented from entering the gas
generating furnace, whereby it is possible to prevent the harmful
exhaust gas from flowing out and possible to improve production of
syngas.
[0011] In order to achieve the above object, according to some
aspect of the present invention, there is provided a pyrolysis
gasification system including: a hopper configured such that raw
material is fed thereinto; a loading chamber configured such that
the raw material fed into the hopper is temporarily stored therein;
a gas generating furnace configured such that the raw material
stored in the loading chamber is fed thereinto, and pyrolyzed and
incinerated; an ash discharge unit configured to discharge ash
completely pyrolyzed in the gas generating furnace; and an oxygen
supply unit configured to supply oxygen into the gas generating
furnace, wherein the loading chamber is provided at an upper end
thereof with a first sealing gate to seal the loading chamber, and
the gas generating furnace is provided at an upper portion thereof
with a second sealing gate to seal the gas generating furnace, such
that when the raw material is fed into the gas generating furnace,
external air is prevented from entering the gas generating furnace
and combustion gas in the gas generating furnace is prevented from
being discharged to an outside.
[0012] The first sealing gate may include: a first door rotatably
provided on a first side of the upper end of the loading chamber by
a first hinge rod; and a second door rotatably provided on a second
side of the upper end of the loading chamber by a second hinge rod,
and disposed to face the first door, wherein the first hinge rod
and the second hinge rod are rotated by an elastic force of a
spring or a drive motor.
[0013] The second sealing gate may include: a door member provided
at a lower end of the loading chamber and configured to be linearly
moved in a horizontal direction to open and close an inlet of the
gas generating furnace; and a driving unit configured to linearly
move the door member, wherein the driving unit includes: a wire
connected to a front and a back of the door member; a drive roller
disposed in front of the door member and configured such that the
wire is wound therearound; a driven roller disposed behind the door
member and configured such that the wire is wound therearound; and
a drive motor connected to the drive roller to rotate the drive
roller.
[0014] The oxygen supply unit may include: a first nozzle
configured such that multiple nozzles are provided on a wall of a
lower gas generating furnace while being spaced apart from each
other at a predetermined interval to uniformly supply oxygen into
the lower gas generating furnace; a second nozzle configured to
inject oxygen directly toward a burning portion of the raw material
by increasing injection pressure compared to the first nozzle; a
first supply path provided on an outer wall of the lower gas
generating furnace and connected to the first nozzle to supply
oxygen to the first nozzle; and a second supply path connected to
the second nozzle to supply oxygen to the second nozzle.
[0015] The first nozzle may be provided with a first nozzle
passage, and the first nozzle passage may be provided at an end
portion thereof with a first nozzle opening opened at a
predetermined angle such that the oxygen injected into the first
nozzle passage diffuses into the gas generating furnace.
[0016] The second nozzle may be inserted into the first nozzle
passage, and may be provided with a second nozzle passage having a
diameter smaller than a diameter of the first nozzle passage, and
the second nozzle passage may be provided at an end portion thereof
with a second nozzle opening formed to be narrower than the second
nozzle passage so as to increase oxygen injection pressure.
[0017] The ash discharge unit may include: a drum rotatably
provided in an ash outlet formed at a lower end of a lower gas
generating furnace to discharge ash; a belt conveyor disposed at a
location below the drum to move the ash discharged through the
drum; and a water chamber provided at a lower portion of the lower
gas generating furnace with water filled therein, and configured
such that an end portion of the ash outlet of the lower gas
generating furnace is sunken under the water to prevent external
air from entering the gas generating furnace through the ash
outlet.
[0018] The drum may be provided with inflow grooves at
predetermined intervals to receive ash therein, and a drive shaft
of the drum may be connected to a drive motor.
[0019] The belt conveyor may be provided in the water chamber and
disposed to be sunken under the water.
[0020] According to the pyrolysis gasification system of the
present invention configured as described above, it is advantageous
in that it is configured to supply oxygen into the gas generating
furnace so as to increase the content and concentration of carbon
monoxide and hydrogen in combustion gas generated during pyrolysis,
whereby the production of syngas for producing chemicals such as
fuels for electricity production or methanol can be improved.
[0021] It is further advantageous in that the inside of the gas
generating furnace is sealed such that combustion gas in the gas
generating furnace is prevented from being discharged to the
outside and external air is prevented from entering the gas
generating furnace, whereby it is possible to prevent the harmful
exhaust gas from flowing out and possible to improve production of
syngas.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and other objects, features and other advantages
of the present invention will be more clearly understood from the
following detailed description when taken in conjunction with the
accompanying drawings, in which:
[0023] FIG. 1 is a perspective view showing a pyrolysis
gasification system according to an embodiment of the present
invention;
[0024] FIG. 2 is a sectional view showing a first sealing gate
according to the embodiment of the present invention;
[0025] FIG. 3 is a perspective view showing a second sealing gate
according to the embodiment of the present invention;
[0026] FIG. 4 is a sectional view showing a gas generating furnace
according to the embodiment of the present invention;
[0027] FIG. 5 is a sectional view showing an oxygen supply unit
according to the embodiment of the present invention; and
[0028] FIG. 6 is a sectional view showing an ash discharge unit
according to the embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0029] Hereinafter, embodiments of the present invention will be
described in detail with reference to the accompanying drawings. In
this process, the size and shape of the components shown in the
drawings may be exaggerated for clarity and convenience of
explanation. In addition, terms defined in consideration of the
configuration and operation of the present invention may be changed
depending on the intention or custom of the user or the operator.
Definitions of these terms should be based on the contents
throughout this specification.
[0030] FIG. 1 is a perspective view showing a pyrolysis
gasification system according to an embodiment of the present
invention.
[0031] Referring to FIG. 1, a pyrolysis gasification system of the
present invention includes: a hopper 10 configured such that raw
material is fed thereinto; a loading chamber 12 configured such
that the raw material fed into the hopper 10 is temporarily stored
therein; a gas generating furnace 20 configured such that the raw
material stored in the loading chamber 12 is fed thereinto, and
pyrolyzed and incinerated; an ash discharge unit 30 configured to
discharge ash completely pyrolyzed in the gas generating furnace
20; and an oxygen supply unit configured to supply oxygen into the
gas generating furnace 20.
[0032] Between the hopper 10 and the loading chamber 12, a first
sealing gate 14 is provided to seal between the hopper 10 and the
loading chamber 12. Further, between the loading chamber 12 and the
gas generating furnace 20, a second sealing gate 16 is provided to
seal between the loading chamber 12 and the gas generating furnace
20.
[0033] The first sealing gate 14, as shown in FIG. 2, includes: a
first door 40 rotatably provided on a first side of the upper end
of the loading chamber 12 by a first hinge rod 44; and a second
door 42 rotatably provided on a second side of the upper end of the
loading chamber 12 by a second hinge rod 46, and disposed to face
the first door 40.
[0034] Each of the first hinge rod 44 and the second hinge rod 46
is provided with a spring providing an elastic force in a direction
where the first door 40 and the second door 42 are closed, wherein
the first door 40 and the second door 42 are opened while
overcoming the elastic force of the spring by the weight of the raw
material fed into the hopper 10, and the raw material fed into the
hopper 10 is fed into the loading chamber 12 and the first door 40
and the second door 42 are automatically closed by the elastic
force of the spring.
[0035] Further, other than this structure, the first hinge rod 44
and the second hinge rod 46 may be connected to a drive motor by
gear engagement, a belt, or a chain, wherein when the drive motor
rotates, the first hinge rod 44 and the second hinge rod 46 are
rotated, whereby the first door 40 and the second door 42 are
opened and closed.
[0036] The first door 40 is rotated as indicated by the arrow A,
and the second door 42 is rotated as indicated by the arrow B so as
to open and close the upper portion of the loading chamber 12.
Here, at the edges of the first door 40 and the second door 42, or
at the upper end of the loading chamber, a sealing member may be
provided to perform a sealing function.
[0037] The second sealing gate 16, as shown in FIG. 3, includes: a
door member 50 provided at a lower end of the loading chamber 12
and configured to be linearly moved in a horizontal direction to
open and close an inlet of the gas generating furnace 20 into which
the raw material is fed; and a driving unit configured to linearly
move the door member 50.
[0038] Between the door member 50 and the lower end of the loading
chamber, a guide member is provided to guide the door member to be
linearly moved.
[0039] Further, the driving unit includes: a wire 52 connected to a
front and a back of the door member 50; a drive roller 54 disposed
in front of the door member 50 and configured such that the wire 52
is wound therearound; a driven roller 56 disposed behind the door
member 50 and configured such that the wire 52 is wound
therearound; and a drive motor 58 connected to the drive roller 54
to rotate the drive roller 54.
[0040] Herein, other than the above described structure, the
driving unit may be any driving unit that can move the door member
linearly, such as lead screw type.
[0041] The second sealing gate 16 is configured such that when the
drive motor is driven, the wire is moved, and the door member 50
connected to the wire is moved, thereby sealably opening and
closing the inlet of the gas generating furnace 20.
[0042] As described above, as for the raw material feeding path of
the pyrolysis gasification system of the present invention,
firstly, when the raw material is fed into the hopper 10, the raw
material fed into the hopper 10 is temporarily stored in the
loading chamber 12 as the first sealing gate 14 is opened.
[0043] Here, since the second sealing gate 16 is in the closed
state, the gas generating furnace remains sealed.
[0044] Further, as the first sealing gate 14 is closed, the inside
of the loading chamber 12 becomes sealed. Then, the second sealing
gate 16 is opened. Accordingly, the raw material stored in the
loading chamber 12 is fed through the inlet of the gas generating
furnace 20. Here, since the loading chamber 12 is in the sealed
state by the first sealing gate 14, external air can be prevented
from entering the gas generating furnace 20 when the raw material
is fed into the gas generating furnace 20.
[0045] The gas generating furnace 20 includes: an upper gas
generating furnace 22 formed in a rectangular barrel shape and
provided with the second sealing gate on the upper surface thereof,
and a lower gas generating furnace 24 disposed below the upper gas
generating furnace 22 and formed in an inverted triangular shape
with the inner diameter thereof being gradually decreased toward
the lower direction
[0046] The upper gas generating furnace 22 is formed in a square
box shape having open top and bottom ends, and is provided on a
side thereof with gas discharge duct 66 through which syngas is
discharged, and a carbon monoxide inlet duct into which carbon
monoxide is flowed.
[0047] The lower gas generating furnace 24, as shown in FIG. 4, is
formed in a shape that the cross section thereof is in an inverted
triangular shape and the inner diameter thereof is gradually
decreased toward the lower side, and is provided with a burner 64
on a side thereof, and an ash outlet 60 on a lower surface thereof
through which ash is discharged.
[0048] On the opposite sides of the lower gas generating furnace
24, the oxygen supply unit 70 is provided to supply oxygen into the
gas generating furnace, and at the lower portion of the lower gas
generating furnace 24, the ash discharge unit 30 is provided to
discharge ash generated in the gas generating furnace 20.
[0049] The oxygen supply unit 70, as shown in FIGS. 5 and 6,
includes: a first nozzle 72 configured such that multiple nozzles
are provided on the opposite walls of the lower gas generating
furnace 24 while being spaced apart from each other at a
predetermined interval to uniformly supply oxygen into the lower
gas generating furnace 24; a second nozzle 74 configured to inject
oxygen directly toward a burning portion of the raw material by
increasing injection pressure compared to the first nozzle 72; a
first supply path 76 connected to the first nozzle 72 to supply
oxygen to the first nozzle 72; and a second supply path 78
connected to the second nozzle 74 to supply oxygen to the second
nozzle 74.
[0050] The first nozzle 72 is formed through the lower gas
generating furnace 24, and is provided with a first nozzle passage
80 having a large diameter, wherein the end portion of the first
nozzle passage 80 is provided with a first nozzle opening 82 opened
at a predetermined angle .theta. such that the oxygen injected into
the first nozzle passage 80 diffuses into the gas generating
furnace. Herein, it is preferable that the angle .theta. of the
first nozzle opening 82 is set to about 60 degrees.
[0051] The second nozzle 74 is inserted into the first nozzle
passage 80, and is provided with a second nozzle passage 84 having
a diameter smaller than that of the first nozzle passage 80,
wherein the end portion of the second nozzle passage is provided
with a second nozzle opening 86 formed to be narrower than the
second nozzle passage 84 so as to increase oxygen injection
pressure.
[0052] Since the first nozzle 72 has a low injection pressure, the
first nozzle serves to supply oxygen uniformly throughout the gas
generating furnace 24, and the second nozzle 74 has a high
injection pressure of oxygen such that oxygen is directly supplied
toward a burning portion of the raw material.
[0053] As described above, the oxygen supply unit of the present
invention is configured such that oxygen supply pressures of the
first nozzle 72 and the second nozzle 74 are different from each
other, whereby in the first nozzle 72, oxygen is uniformly
distributed throughout the entire gas generating furnace, and in
the second nozzle 74, oxygen is directly injected toward the
location where the raw material is burning, thereby allowing
complete combustion to occur.
[0054] The pyrolysis gasification system produces syngas by
pyrolysis and incineration of raw material, and the syngas is
post-treated to produce methanol or used as a fuel gas to produce
electricity.
[0055] A conventional pyrolysis incineration apparatus is
problematic in that when air is injected into the gas generating
furnace, the quality of the syngas produced is deteriorated due to
the nitrogen contained in the air. To solve this problem, the
present invention is configured to supply oxygen into the gas
generating furnace, thereby improving the quality of syngas and the
rate of complete combustion of raw material.
[0056] Further, a carbon monoxide inlet duct is connected to the
gas generating furnace 20 to feed the carbon monoxide, which is
remained after producing fuel gas or methanol by processing the
syngas discharged from the gas generating furnace 20, back into the
gas generating furnace, thereby preventing environmental
pollution.
[0057] The ash discharge unit, as shown in FIG. 6, includes: a drum
62 rotatably provided in the ash outlet 60 formed at a lower end of
the lower gas generating furnace to discharge ash; a belt conveyor
94 disposed at a location below the drum 62 to move the ash
discharged through the drum 62; and a water chamber 92 provided at
a lower portion of the lower gas generating furnace 24 with water
filled therein, and configured such that an end portion of the ash
outlet 60 of the lower gas generating furnace 24 is sunken under
the water to prevent external air from entering the gas generating
furnace 20 through the ash outlet 60.
[0058] The drum 62 is provided with inflow grooves 90 at
predetermined intervals in the longitudinal direction to receive
ash therein, and is connected with a drive motor, such that when
the drum 62 is rotated by the drive motor, the ash in the inflow
grooves 90 falls downward and is loaded on the belt conveyor
94.
[0059] Here, since the belt conveyor 94 is provided in the water
chamber 92 and disposed under the water, the ash is discharged
under the water, thereby preventing dust from floating.
[0060] Although a preferred embodiment of the present invention has
been described for illustrative purposes, those skilled in the art
will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *