U.S. patent application number 14/351149 was filed with the patent office on 2014-09-11 for process for dry cooling of coke with carbon dioxide with subsequent use of the carbon monoxide produced.
This patent application is currently assigned to THYSSENKRUP INDUSTRIAL SOLUTIONS AG. The applicant listed for this patent is THYSSEKRUPP INDUSTRIAL SOLUTIONS AG. Invention is credited to Holger Thielert.
Application Number | 20140251784 14/351149 |
Document ID | / |
Family ID | 47018953 |
Filed Date | 2014-09-11 |
United States Patent
Application |
20140251784 |
Kind Code |
A1 |
Thielert; Holger |
September 11, 2014 |
PROCESS FOR DRY COOLING OF COKE WITH CARBON DIOXIDE WITH SUBSEQUENT
USE OF THE CARBON MONOXIDE PRODUCED
Abstract
A process for dry cooling of coke with carbon dioxide with
subsequent use of the carbon monoxide produced, in which the coal
is cyclically converted to coke and the coke, after the coking oven
has been unloaded, is introduced into a cooling apparatus, and
carbon dioxide is introduced in the cooling apparatus for dry
cooling, such that a Boudouard reaction gives rise to carbon
monoxide, and the carbon monoxide produced is used to heat the
coking oven. The process allows utilization of the heat which
arises in the course of coking for production of carbon monoxide,
which in turn is used in the heating, such that a very balanced
heat budget of the overall process can be achieved overall.
Inventors: |
Thielert; Holger; (Dortmund,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
THYSSEKRUPP INDUSTRIAL SOLUTIONS AG |
Essen |
|
DE |
|
|
Assignee: |
THYSSENKRUP INDUSTRIAL SOLUTIONS
AG
Essen
DE
|
Family ID: |
47018953 |
Appl. No.: |
14/351149 |
Filed: |
September 21, 2012 |
PCT Filed: |
September 21, 2012 |
PCT NO: |
PCT/EP2012/003953 |
371 Date: |
April 11, 2014 |
Current U.S.
Class: |
201/39 |
Current CPC
Class: |
Y02P 20/129 20151101;
C10B 39/02 20130101 |
Class at
Publication: |
201/39 |
International
Class: |
C10B 39/02 20060101
C10B039/02 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 12, 2011 |
DE |
10 2011 115 699.6 |
Claims
1. A method for the dry quenching of coke in which coal is heated
in a coke oven via heating by means of a high calorific gas and
coke is obtained via cyclic coking, said coke being pushed out into
a coke quenching car on completion of the coking, and the
incandescent coke is transported to a coke quenching device in a
coke quenching car in which said incandescent coke is quenched to a
temperature below the kindling temperature by means of a quenching
gas, and carbon dioxide (CO.sub.2), which reacts at least partially
with the incandescent coke to form carbon monoxide (CO) according
to the Boudouard reaction, is used as the quenching gas, wherein
due to the dry quenching being carried out in a coke quenching
device the carbon monoxide-containing quenching gas obtained is
collected, and the gas mixture obtained is at least partially
returned to the coke oven in order to heat said oven with the
carbon monoxide (CO).
2. The method for the dry quenching of coke according to claim 1,
wherein steam is added to the quenching gas.
3. The method for the dry quenching of coke according to claim 2,
wherein the steam is added to the coke quenching device above the
coke cake and downstream in the direction of flow so that a
reaction for converting surplus carbon dioxide into carbon monoxide
can subsequently be carried out.
4. The method for the dry quenching of coke according to claim 1
wherein liquid water is sprayed into the quenching gas after it has
passed through the coke cake so that a reaction for converting
surplus carbon dioxide into carbon monoxide can subsequently be
carried out.
5. The method for the dry quenching of coke according to claim 1,
wherein a hydrocarbonaceous fuel gas is mixed with the carbon
monoxide used to heat the coke oven before said carbon monoxide is
fed to the coke oven.
6. The method for the dry quenching of coke according to claim 5,
wherein the fuel gas is natural gas.
7. The method for the dry quenching of coke according to claim 5,
wherein the fuel gas is blast furnace gas from a blast furnace
process.
8. The method for the dry quenching of coke according to claim 5,
wherein the fuel gas is coke oven gas.
9. The method for the dry quenching of coke according to claim 1,
wherein the carbon monoxide is subjected to a heat recovery process
before being fed to the coke oven for heating.
10. The method for the dry quenching of coke according to claim 9,
wherein steam is generated during the heat recovery process.
11. The method for the dry quenching of coke according to claim 1,
wherein the carbon dioxide for quenching is split into at least two
part streams, with one carbon dioxide part stream being fed into
the coke quenching device from below and a further carbon dioxide
part stream being fed in in a part of the coke quenching device in
which the coke to be quenched has a temperature of 500 to
900.degree. C.
12. The method for the dry quenching of coke according to claim 1,
wherein the coke oven battery from which the coke comes and which
is heated by the carbon monoxide is a "heat-recovery"-type coke
oven battery.
13. The method for the dry quenching of coke according to claim 1,
wherein the coke oven battery from which the coke comes and which
is heated by the carbon monoxide is a "non-recovery"-type coke oven
battery.
14. The method for the dry quenching of coke according to claim 1,
wherein the coke oven battery from which the coke comes and which
is heated by the carbon monoxide is a coke oven battery in which
the coking gas is collected and processed.
15. The method for the dry quenching of coke according to claim 1,
wherein the waste gas or coking gas from the coke oven is subjected
to gas scrubbing in which the carbon dioxide is scrubbed from the
waste gas and the carbon dioxide obtained is added to the carbon
dioxide for quenching the coke.
16. The method for the dry quenching of coke according to claim 1,
wherein the coke quenching device is a coke quenching shaft.
17. The method for the dry quenching of coke according to claim 1,
wherein the coke quenching device is a coke quenching chamber.
18. The method for the dry quenching of coke according to claim 1,
wherein the coke quenching chamber is equipped with an antechamber.
Description
[0001] The invention relates to a method for the dry quenching of
coke by means of carbon dioxide with subsequent use of the carbon
monoxide produced, said method involving the cyclic coking of coal
to coke with the coke being sent to a quenching device after being
discharged from the coke oven and carbon dioxide being introduced
into the quenching device for dry quenching, thus creating carbon
monoxide via a Boudouard reaction and the carbon monoxide produced
being used to heat the coke oven. This method allows the heat
generated during coking to be used for the production of carbon
monoxide which, in turn, can be used in the heating process, thus
on the whole achieving an extremely even heat balance throughout
the entire process.
[0002] Most methods for the production of coke take place in large
coke oven batteries or coke oven banks that comprise conventional
coke oven chambers or coke oven chambers of the "heat recovery" or
"non-recovery" type. In conventional coke oven chambers the coking
gas is collected and processed, while the coking gas in "heat
recovery" or "non-recovery"-type coke oven banks is combusted in
the coke oven in order to heat said oven. Here, in many embodiments
the heating of the coke oven is carried out in several steps in a
gas space above the coke cake and in a coke oven sole below the
coke oven chamber.
[0003] The coking process is performed cyclically, the cycles being
charging, coking, discharging and quenching. After coking, the coke
is pushed out of the coke oven chamber at a temperature of
approximately 1100.degree. C. It is pushed out into a quenching car
that collects the coke cake and transports it to a quenching
device. In many embodiments this is a wet quench tower, where the
coke cake is sprayed with water which evaporates and cools the coke
cake to a temperature below the kindling temperature of the coke so
that it can be transported in the open air without posing a hazard.
After quenching, the temperature of the coke is unevenly
distributed in the coke cake but is usually less than 100.degree.
C.
[0004] DE19614482C1 gives one embodiment of a wet quench tower.
This teaching describes a plant for the wet quenching of hot coke
in a method for the coking of coal using a coke sluice and a coke
transfer chute that is located in a quench tower with a water feed
device. On the other side, the chute fits onto a coke quenching car
equipped at the bottom end with a coke discharge device and water
discharge flaps. The water feed system is located directly at the
transfer chute and empties into the coke quenching car, which can
be sealed watertightly and is equipped with a control system which
keeps the coke discharge flaps closed watertightly while the water
is being fed in and opens the water discharge flaps once the water
feed has been completed. When water is used for quenching, all of
the thermal energy stored in the coke cake is lost without being
used.
[0005] For this reason, increasing efforts have recently been made
to dry quench hot coke using gases instead of water. Here, the
gases are passed through the hot coke and collected or extracted
until the coke has cooled to a temperature below its kindling
temperature. The hot gas is usually passed through a heat recovery
unit in which steam is generated, thus recovering the thermal
energy. In turn, the steam can be used to drive auxiliary units or
to generate electric power. For these purposes, inert gases, such
as nitrogen or blast furnace gas, are often used.
[0006] WO9109094B1 describes a method for the dry quenching of coke
in a quenching chamber with the aid of circulating quenching gas,
said method allowing the velocity of the gas coming from the coke
to be adjusted so that the grain size of the entrained coke dust
particles is less than 3 mm and when the hot quenching gas enters
the waste heat boiler the grain size of the entrained coke dust is
less than 1 mm, said method involving this gas being passed through
a device that consists of a quenching chamber and an antechamber
with a round cross section of about equal size and a cylindrical
outer casing made of metal, and in particular the roof of the
quenching chamber being in an inclined position so that it rises to
the hot gas channel, thus increasing the cross section of the
annular gas channel above the coke pile enough to allow the gas
velocity of the hot quenching gas to be adjusted during quenching
so that it remains virtually uniform across the length.
[0007] WO8602939A1 describes a method for dry coke quenching using
quenching gas, said method involving the coke and the quenching gas
being fed in countercurrent direction through a two-stage quencher,
the first stage involving quenching to coke temperatures of
approximately 800.degree. C. and the quenching gas fed through the
second quenching stage containing steam, the quenching gas loop
thus being directly coupled with a thermal treatment step in which
steam is added so that there is essentially no char burnout, which
is achieved by the quenching in the first quenching stage taking
place solely by indirect heat exchange between the coke and a
coolant via heat exchanger walls and the quenching in the second
stage being carried out solely by means of the steam-containing
quenching gas.
[0008] State-of-the-art methods for dry coke quenching may include
a variety of embodiments. EP0317752A2 describes a method for
improving the performance of coke dry quenchers which involves hot
coke being broken up before entering the quenching shaft.
DE3030969A1 describes a method for the dry quenching of hot raw
coke that is pushed out of the chambers of a coke oven battery and
discharged in a quenching chamber, where it is quenched by means of
direct or indirect contact, or both, with a quenching agent, and
therefore the raw coke is preclassified into two or more size
fractions before entering the quenching chamber and the individual
size fractions are subjected to quenching in separate quenching
chambers.
[0009] Further embodiments relate to the heat recovery or cleaning
of the quenching gas. DE2435500A1 describes a method for preheating
coking coal using superheated waste heat steam which is generated
in a dry coke quencher by the coke releasing, at its highest
temperature level, some of its heat to the walls of a steam jacket.
DE3217146A1 describes a device for dedusting the loop gas of a coke
dry quencher in which the gas inlet channel and the gas outlet
channel are located at right angles to each other, the gas outlet
channel being directly connected, via a conical expansion, with the
inlet opening of the waste heat recovery boiler integrated into the
gas loop and a dust collection chamber with an inclined dust
discharge area being positioned on the opposite side to the gas
inlet channel.
[0010] However, the said methods and their embodiments have the
disadvantage that during quenching the heat of the coke either
cannot be recovered or the heat of the coke can only be
inefficiently recovered as during quenching a large gas volume is
generated and this needs to be passed through a heat recovery unit,
making quenching technically difficult or economically inefficient.
For this reason, it would be advantageous to utilise the heat that
exists in the pushed coke via an endothermic chemical reaction that
makes this energy available in chemical form.
[0011] One suitable endothermic chemical reaction is the Boudouard
reaction. To conduct this reaction carbon dioxide (CO.sub.2) is
passed through the hot coke, which reacts with the carbon dioxide
to form carbon monoxide (CO). This reaction is endothermic and
reads:
C+CO.sub.22 CO; .DELTA.H=+172.45 kJ/mol
[0012] The carbon monoxide is then contained in the gas heated by
the quenching of the coke and can be used to heat the coke oven.
Quenching hot coke with carbon dioxide using the Boudouard
equilibrium is described in GB245702A. Although the application
describes the use of carbon monoxide as a fuel gas, it does not
propose quenching the coke in a quenching device using carbon
dioxide, subsequently collecting the carbon monoxide and then
heating a coke oven chamber with the carbon monoxide.
[0013] Therefore, the objective is to provide a method that
cyclically carbonises coal and uses carbon dioxide (CO.sub.2) to
dry quench hot coke after a coking cycle, with the carbon dioxide
thus reacting at least partially with the coke to form carbon
monoxide (CO) according to the Boudouard equilibrium and the carbon
monoxide obtained being collected and used to heat at least one
coke oven.
[0014] According to the invention, coke quenching using carbon
dioxide takes place in a quenching device that is preferably
designed as a quenching shaft. Following coking of the coal and
completion of the coking process, the coke cake is taken to, or
tipped onto, a quenching car, which transports the coke cake to the
quenching device. Here, the coke cake is sealed off from the
surrounding atmosphere and carbon dioxide is passed through it.
Preferably, this is done in a vertically upward gas flow direction
so that the specifically heavier carbon dioxide is displaced by the
lighter carbon monoxide during the quenching process. The carbon
dioxide may be a gas mixture in any state and even be in a mixture
with other gases, but is preferably used cooled and dried in pure
form.
[0015] What is claimed in particular is a method for the dry
quenching of coke, in which [0016] coal is heated in a coke oven
via heating by means of a high calorific gas and coke is obtained
via cyclic coking, said coke being pushed out into a coke quenching
car on completion of the coking, and [0017] the incandescent coke
is transported to a coke quenching device in a coke quenching car
in which said incandescent coke is quenched to a temperature below
the kindling temperature by means of a quenching gas, and [0018]
carbon dioxide (CO.sub.2), which reacts at least partially with the
incandescent coke to form carbon monoxide (CO) according to the
Boudouard reaction, is used as the quenching gas,
[0019] said method being characterised in that [0020] due to the
dry quenching being carried out in a coke quenching device the
carbon monoxide-containing quenching gas obtained is collected, and
[0021] the gas mixture obtained is at least partially returned to
the coke oven in order to heat said oven with the carbon monoxide
(CO).
[0022] The carbon dioxide added for quenching purposes may be dried
or undried. So as to avoid the production of undesired by-products,
the carbon dioxide added is usually dried and in pure form. For
this, the carbon dioxide can be taken from any source and in an
exemplary embodiment comes from gas scrubbing processes. Said
carbon dioxide can be used without being cleaned, but may also be
cleaned prior to use. Other inert gases, such as nitrogen, may also
be added to the carbon dioxide.
[0023] For addition, the carbon dioxide may be temporarily stored
in a storage tank. The carbon monoxide obtained during quenching of
the coke may also be temporarily stored. Part streams of these two
gases may also be diverted and used for purposes unrelated to the
coke production plant. Meters for measuring the concentration of
the gases may be installed in the carbon dioxide or the carbon
monoxide lines. These readings may be referred to in order to
decide on the use of these gases at various times. This may be done
manually or by computer.
[0024] In a further embodiment steam (H.sub.2O) is added to the
carbon dioxide as quenching gas. The steam then reacts with the
coke to form hydrogen (H.sub.2) and carbon monoxide (CO), from
which synthesis gas is generated with the carbon monoxide which is
formed by the carbon dioxide reacting with the coke. The synthesis
gas can be used solely for heating or a part stream can also be
diverted and used for any further purpose.
[0025] The steam may be added to the carbon dioxide used for
quenching at any point. It may, for example, be added to the carbon
dioxide before said carbon dioxide is used to quench the coke. It
may, however, also be fed to the quenching device or to the shaft
above the feed point for the carbon dioxide separately from said
carbon dioxide and downstream in the direction of flow. For this,
the water may also be injected into the carbon dioxide stream in
liquid form. It is also possible to add the steam to the coke cake
via side feed nozzles directly downstream in the direction of flow
when part of the coke has already reacted with the carbon
dioxide.
[0026] Steam can also be added to the carbon monoxide after
quenching by the carbon dioxide in order to carry out a separate
carbon monoxide (CO) shift and thus achieve conversion into
synthesis gas. The steam is then added after the carbon dioxide has
been passed through the coke. For this, liquid water may also be
added. In a typical embodiment this is then sprayed into the
quenching gas after it has passed through the coke cake. After the
Boudouard reaction has been carried out, the carbon monoxide is
then cooled and passed though a conversion reactor to convert the
carbon monoxide (CO) into carbon dioxide (CO.sub.2) and hydrogen
(H.sub.2) via the water-gas shift reaction.
[0027] An excess of steam may also be added prior to quenching and
passage through the coke cake so that a reaction for converting
surplus steam and carbon monoxide into hydrogen can subsequently be
carried out. In this case, part of the steam (H.sub.2O) may already
react with the hot coke in a water-gas reaction to form carbon
monoxide (CO) and hydrogen (H.sub.2). Liquid water can also be used
instead of steam. This is sprayed into the carbon monoxide stream
before its passage through the coke. This procedure can also be
carried out in combination with feeding steam to the quenching
gas.
[0028] When water is added to the quenching gas or during a
subsequent conversion reaction, synthesis gas is obtained. It is
possible to divert a part stream thereof and use the synthesis gas
for any other purpose. In one embodiment of the invention it can be
used at least partially to heat the coke oven.
[0029] Before being fed to the coke oven the carbon monoxide used
to heat the coke oven can be mixed with a fuel gas. In one
embodiment this is hydrocarbonaceous and so a hydrocarbonaceous
fuel gas is mixed with the carbon monoxide. In one embodiment of
the invention, the fuel gas is natural gas. This is mixed with the
carbon monoxide before it is fed into the coke oven and used to
heat said oven. It is also possible for the carbon monoxide for
heating the coke oven to be mixed with fuel gases that are
generated as byproducts in other processes and still have a certain
calorific value. For example, it is possible to add blast furnace
gas from a blast furnace process to the carbon monoxide before it
is added to the coke oven. In a further embodiment of the invention
it is also possible for additional heating to feed coke oven gas to
the carbon monoxide before it is added to the coke oven.
[0030] The carbon monoxide that is generated by the Boudouard
reaction and to which a fuel gas has been added as required can be
used directly for heating without further treatment before it is
fed to the coke oven. However, it can also be subjected to a heat
recovery process before being used for heating in a coke oven. In
an advantageous embodiment, the carbon monoxide is passed through
the coke cake at a temperature of approximately 1000.degree. C.
After being passed through the coke cake the temperature of the
carbon monoxide is usually still approximately 900.degree. C. as
the Boudouard reaction almost ceases below this temperature
threshold.
[0031] This temperature is adequate for heat recovery and so in an
advantageous embodiment the carbon monoxide is passed through a
heat recovery unit before being fed into the coke oven for
combustion. For example, it is possible to use this heat to
preheat, in countercurrent, the carbon dioxide gas stream that is
fed in. It is also possible to use the heat for various purposes
but it is advantageously used to generate steam. The steam can also
be used for various purposes but is usually used to generate
mechanical energy. In a typical embodiment this is, in turn, used
to drive a turbine and to generate electric power.
[0032] After quenching, the coke cake usually has a temperature of
500 to 900.degree. C. To finally bring the coke down to a
temperature below the kindling temperature after quenching, final
quenching is carried out using state-of-the-art methods following
the quenching operation with the carbon dioxide within the scope of
the invention.
[0033] The carbon dioxide for quenching the coke can simply be
directed into the coke cake in a stream. It may however also be
split into any number of part streams. In one embodiment of the
method according to the invention the carbon dioxide stream that is
fed in is split into at least two part streams, with one carbon
dioxide part stream being fed into the coke quenching device from
below and a further carbon dioxide part stream being fed in in a
part of the shaft in which the coke to be quenched has a
temperature of 500 to 900.degree. C. The carbon dioxide part stream
can be fed in at any point in the quenching device, but is
preferably done at this point as utilisation of the heat is thus
optimum. An additional part stream of carbon dioxide can also be
fed in at any time in order to achieve complete quenching of the
coke. The part streams can generally be fed into the coke at any
point in the hot coke cake.
[0034] For use in implementing the method, the coke oven battery or
coke oven bank may be of any design and configured in any way. The
coke oven battery from which the coke comes and which is heated by
the carbon monoxide may, for example, be a coke oven battery in
which the coking gas is collected and processed. The coke oven bank
from which the coke comes and which is heated by the carbon
monoxide may, for example, be a "heat-recovery"-type coke oven
battery. Finally, the coke oven bank from which the coke comes and
which is heated by the carbon monoxide may also be a
"non-recovery"-type coke oven battery. Even the coke ovens that are
located in a coke oven battery or bank may ultimately be of any
design as long as they are suitable for the production of coke and
for being heated by carbon monoxide. The coke pushing may also be
carried out at a different coke oven battery or bank from that to
which the carbon monoxide obtained during quenching is fed, but
this is not usual practice.
[0035] In one embodiment of the invention the waste gas or
completely combusted coking gas from the coke oven is subjected to
gas scrubbing. This allows the carbon dioxide to be scrubbed from
the waste gas and the carbon dioxide obtained to be added to the
carbon dioxide for quenching the coke. In this way an even carbon
dioxide (CO.sub.2) balance can be achieved for the entire plant as
the carbon dioxide from the waste gas is, in turn, used to quench
the coke and, after being converted to carbon monoxide, to heat the
oven. As a result, the overall emission of carbon dioxide is low
and ideally non-existent.
[0036] The quenching device for the coke may be of any design for
implementing the invention. Preferably, for example, the coke
quenching device may be a coke quenching shaft. But the coke
quenching device may also be a coke quenching chamber. This may be
equipped with auxiliary equipment to improve or optimise quenching.
In one embodiment of the invention the coke quenching chamber is
equipped with an antechamber in which the gas velocity is evened
out. The quenching device or the subsequent transfer line for the
carbon monoxide may also be equipped with a dedusting device. This
allows the dust to be reduced if a dust-laden coal is used or large
amounts of dust are created during quenching.
[0037] Furthermore, auxiliary equipment, such as storage tanks for
liquids or gases, pumps, valves, heating or quenching equipment, or
meters for measuring temperatures or concentrations of gas
constituents may be used at any point in the method according to
the invention.
[0038] The invention has the advantage of utilising the thermal
energy of the coke after coking by means of an endothermic chemical
reaction and so the thermal energy of the hot coke can be utilised
much better than in prior-art methods. In addition, if down-stream
gas scrubbing of the waste gas is employed, the invention has the
advantage of considerably reducing the carbon dioxide balance or
even reducing it to zero in relation to its emission to the
atmosphere as the carbon dioxide is fed back into the method. The
environmental compatibility of this method can thus be considerably
improved.
[0039] The invention is further explained by means of a drawing,
this drawing merely representing an exemplary embodiment and not
being limited thereto.
[0040] FIG. 1 shows a coke oven which serves to carbonise coal. It
depicts the coke oven chamber (1) with the coal cake (2), the coke
oven chamber doors (3), the primary heating space (4) above the
coke cake (2) and the secondary heating space (5) below the coke
cake (2). The quenching car (6), which collects the coke cake (2)
for quenching, is parked in front of the coke oven chamber (1).
Said quenching car (6) is brought in front of the coke quenching
chamber (7) and the coke cake (2) is emptied into the coke
quenching chamber (7) via a feed flap (7a). Said flap (7a) is
closed once the coke quenching chamber (7) has been filled. Carbon
dioxide (8, CO.sub.2) then flows into the coke quenching chamber
(7) from below and reacts with the hot coke cake (2) according to
the Boudouard equilibrium to form carbon monoxide (9, CO). This is
extracted in an upward direction and, following dedusting in a
dedusting unit (10) and a heat exchange for preheating the carbon
dioxide (8) in a heat exchanger (11), it is directed into the
secondary heating space (5) of the coke oven (1). Here, it is added
to the partially combusted coking gas which has already flowed into
the secondary heating space (5) from the primary heating space (4)
and combusted. As a result, it contributes to the heating of the
coke cake (2) through the floor of the coke oven chamber (1). After
combustion, the fully combusted coking gas is exported out of the
secondary heating space (5) as waste gas (12) and sent to a gas
scrubbing device (13). Thereby, carbon dioxide (13a) is obtained.
This is used to quench the coke (2) via a storage tank (14) for the
carbon dioxide (8). The cleaned waste gas (13b) is exported from
the gas scrubbing device (13) and sent to a heat recovery unit
(15). Here, a generator (15a) that generates electric power is
driven via a turbine. The cooled waste gas (15b) is exported via a
flue (16). The quenched coke (5a) is discharged via a discharge
flap (7b) and sent for final quenching.
LIST OF REFERENCE NUMBERS AND DESIGNATIONS
[0041] 1 Coke oven chamber [0042] 2 Coal or coke cake [0043] 3 Coke
oven chamber doors [0044] 4 Primary heating space [0045] 5
Secondary heating space [0046] 5a Quenched coke [0047] 6 Quenching
car [0048] 7 Coke quenching chamber [0049] 7a Feed flap [0050] 7b
Discharge flap for quenched coke [0051] 8 Carbon dioxide [0052] 9
Carbon monoxide [0053] 10 Dedusting unit [0054] 11 Heat exchanger
[0055] 12 Waste gas [0056] 13 Gas scrubbing device [0057] 13a
Carbon dioxide from the gas scrubbing [0058] 13b Cleaned waste gas
[0059] 14 Storage tank [0060] 15 Heat recovery unit 15a Generator
15b Cooled waste gas [0061] 16 Flue
* * * * *