Title of Invention	A DEVICE FOR FEEDING COMBUSTION AIR REQUIRED TO BURN COKING GAS IN A COKING CHAMBER OF A COKE OVEN
Abstract	(EN) Device for burning coking gas in a coking chamber of a coke oven of the 'non-recovery type' or 'heat-recovery type', a multiplicity of inlet openings for primary air being arranged in the roof of each oven chamber in such a way that the coking gas produced during the coking is brought into uniform contact with the desired quantity of primary air for the partial combustion of the coking gas, these inlet openings for primary air being combined above the oven for each oven chamber separately by an air feed system, the air feed systems of the individual oven chambers being connected to an air feed system common to many oven chambers, and a respective control member for varying the primary air quantity over the carbonizing time being provided between the common air feed system and the air feeds of the individual oven chambers. A slight, constant positive pressure can be applied to the common air feed system. (DE) Vorrichtung zur Verbrennung von Verkokungsgas in einer Verkokungskammer eines Koksofens vom 'Non-Recovery-Typ' oder 'Heat-Recovery-Typ', wobei in der Decke jeder Ofenkammer eine Vielzahl von Eintrittsöffnungen für Primärluft derart angeordnet werden, dass das während der Verkokung entstehende Verkokungsgas gleichmäßig mit der gewünschten Menge Primärluft für die Teilverbrennung des Verkokungsgases in Kontakt gebracht wird, diese Eintrittsöffnungen für Primärluft oberhalb des Ofens für jede Ofenkammer separat durch ein Luft-Zuführungssystem zusammengefasst werden, die Luft-Zuführungssysteme der einzelnen Ofenkammern an ein für viele Ofenkammern gemeinsames Luft-Zuführungssystem angeschlossen werden, und zwischen dem gemeinsamen Luft-Zuführungssystem und den Luftzuführungen der einzelnen Ofenkammern je ein Steuerorgan zur Veränderung der Primärluft-Menge über der Garungszeit vorgesehen wird. Das gemeinsame Luft-Zuführungssystem kann mit leichtem, konstanten Überdruck beaufschlagt werden.

Title of Invention

A DEVICE FOR FEEDING COMBUSTION AIR REQUIRED TO BURN COKING GAS IN A COKING CHAMBER OF A COKE OVEN

Abstract

(EN) Device for burning coking gas in a coking chamber of a coke oven of the 'non-recovery type' or 'heat-recovery type', a multiplicity of inlet openings for primary air being arranged in the roof of each oven chamber in such a way that the coking gas produced during the coking is brought into uniform contact with the desired quantity of primary air for the partial combustion of the coking gas, these inlet openings for primary air being combined above the oven for each oven chamber separately by an air feed system, the air feed systems of the individual oven chambers being connected to an air feed system common to many oven chambers, and a respective control member for varying the primary air quantity over the carbonizing time being provided between the common air feed system and the air feeds of the individual oven chambers. A slight, constant positive pressure can be applied to the common air feed system. (DE) Vorrichtung zur Verbrennung von Verkokungsgas in einer Verkokungskammer eines Koksofens vom 'Non-Recovery-Typ' oder 'Heat-Recovery-Typ', wobei in der Decke jeder Ofenkammer eine Vielzahl von Eintrittsöffnungen für Primärluft derart angeordnet werden, dass das während der Verkokung entstehende Verkokungsgas gleichmäßig mit der gewünschten Menge Primärluft für die Teilverbrennung des Verkokungsgases in Kontakt gebracht wird, diese Eintrittsöffnungen für Primärluft oberhalb des Ofens für jede Ofenkammer separat durch ein Luft-Zuführungssystem zusammengefasst werden, die Luft-Zuführungssysteme der einzelnen Ofenkammern an ein für viele Ofenkammern gemeinsames Luft-Zuführungssystem angeschlossen werden, und zwischen dem gemeinsamen Luft-Zuführungssystem und den Luftzuführungen der einzelnen Ofenkammern je ein Steuerorgan zur Veränderung der Primärluft-Menge über der Garungszeit vorgesehen wird. Das gemeinsame Luft-Zuführungssystem kann mit leichtem, konstanten Überdruck beaufschlagt werden.

Full Text	Combustion air feeding system for coke oven [0001] The invention relates to a device and a process for feeding combustion air required to burn coking gas that is released above the coal bed when coal is coked in coking plants with coking chambers, using the Non-Recovery process or Heat-Recovery process. The process described in this application is independent of the number of coke ovens, provided they form a battery. DE 102 01 985 A1, for example, describes a device of this type. [0002] Heat Recovery coke ovens, as a rule, are heated by burning the gas obtained during the coking process. The combustion is controlled in such a manner that part of the gas is burned in the oven chamber above the coal inventory with the aid of primary air. This partly burned gas is conveyed through ducts also named "downcomer" to the heating flues arranged in the sole slab of the oven chamber and subsequently it is completely burned by adding further combustion air also named secondary air. [0003] Hence, this method is used to transfer heat to the coal charge directly from above and indirectly from the lower side, an effect that is beneficial to the coking velocity and also to the performance of the oven. For the implementation of the process it is necessary that the air fed to the section above the coal charge (primary air) be exactly metered and varied in control via the duration of the coking period. In order to ensure a uniform heat development across the entire coal charge, it is necessary that the combustion air be dispersed in as fine a manner as possible across the entire coal charge. [0004] According to the state-of-the-art technology, primary air is taken in through openings in the doors, the said openings being equipped with devices for manual adjustment of the air flow rate. In practice, however, the air taken in directly reacts upon entering the oven and the desired partial combustion thus cannot take place. Part of the coking gas instead undergoes an almost complete reaction near the air inlet openings of the doors, whereas the residual part of the coking gas is not burnt because of lack of oxygen. [0005] Hence, the heat development is by no means uniform across the whole coal charge, which inevitably leads to an equivalent heat input with unfavourable heat distribution in the coal bed. The aim of the invention, therefore, is to overcome the deficiencies described and to apply efficient means to solve this task by the following means: • The ceiling of each oven chamber is provided with a plurality of inlet openings for primary air, the said inlets being anrranged such that the coking gas obtained during the coking process comes into contact with the desired quantity of primary air in a uniform manner; • the said inlet openings for primary air are grouped above the oven for each chamber so that a separate feed can be operated via an air feeding system; • the air feeding systems of the individual oven chambers are connected to a common air supply header system; • and one control device each is installed between the common air supply header system and the individual feeders of the oven chambers so that the primary air quantity can be adjusted via a variation of the coking period. [0007] In accordance with an embodiment of the invention, the common air supply system is slightly pressurized at a constant value that suffices to overcome the line resistance in the air supply system and counteracts the stack effect in the openings. It is recommended that this pressurisation be carried out by means of a blower. The air supply and feed systems are constructed as piping or duct systems. [0008] The attached diagrams and charts serve to illustrate the said system, Fig. 1 showing a schematic and perspective view of the coking chamber, using the Heat-Recovery process, with coke filling opening 1, downcomer system 2 and ducts 3 arranged underneath and required to evacuate the combustion gases, and the said ducts may be equipped with internal post-combustion devices. [0009] The system arranged above the coking chamber consists of feeder lines 4, each being connected with a plurality of feed openings 5. The said feeder lines 4 are connected to a common header system 6, which is slightly pressurised by means of blower 7. [0010] List of reference designations 1 Coke filling opening 2 Downcomer system 3 Ducts 4 Feed lines 5 Feed openings 6 Collecting system 7 Blowers Patent claims 1. Device for feeding combustion air required to burn coking gas in a coking chamber of a coke oven of the "Non-Recovery type" or "Heat-Recovery type", characterised in that • the ceiling of each oven chamber is provided with a plurality of inlet openings (5) for primary air, the said inlets being arranged such that the coking gas obtained during the coking process comes into contact with the desired quantity of primary air in a uniform manner; • the said inlet openings for primary air are grouped above the oven for each oven chamber so that a separate feed can be operated via an air feeding system (4); • the air feeding systems (4) of the individual oven chambers are connected to a common air supply header system (6); • and one control device each is installed between the common air supply header system (6)and the individual feeders (4) of the oven chambers so that the primary air quantity can be adjusted via a variation of the coking period. 2. Process according to Claim 1, characterised in that the common air supply system can be slightly pressurised at a constant value. 3. Process for feeding combustion air required to burn coking gas by means of a device in accordance with Claim 2, characterised in that the common air supply system is slightly pressurised at a constant value. Dated this 3 day of December 2007

Full Text

Combustion air feeding system for coke oven
[0001] The invention relates to a device and a process for feeding combustion air required to burn coking gas that is released above the coal bed when coal is coked in coking plants with coking chambers, using the Non-Recovery process or Heat-Recovery process. The process described in this application is independent of the number of coke ovens, provided they form a battery. DE 102 01 985 A1, for example, describes a device of this type.
[0002] Heat Recovery coke ovens, as a rule, are heated by burning the gas obtained during the coking process. The combustion is controlled in such a manner that part of the gas is burned in the oven chamber above the coal inventory with the aid of primary air. This partly burned gas is conveyed through ducts also named "downcomer" to the heating flues arranged in the sole slab of the oven chamber and subsequently it is completely burned by adding further combustion air also named secondary air.
[0003] Hence, this method is used to transfer heat to the coal charge directly from above and indirectly from the lower side, an effect that is beneficial to the coking velocity and also to the performance of the oven. For the implementation of the process it is necessary that the air fed to the section above the coal charge (primary air) be exactly metered and varied in control via the duration of the coking period. In order to ensure a uniform heat development across the entire coal charge, it is necessary that the combustion air be dispersed in as fine a manner as possible across the entire coal charge.
[0004] According to the state-of-the-art technology, primary air is taken in through openings in the doors, the said openings being equipped with devices for manual adjustment of the air flow rate. In practice, however, the air taken in directly reacts upon entering the oven and the desired partial combustion thus cannot take place. Part of the coking gas instead undergoes an almost complete reaction near the air inlet openings of the doors, whereas the residual part of the coking gas is not burnt because of lack of oxygen.
[0005] Hence, the heat development is by no means uniform across the whole coal charge, which inevitably leads to an equivalent heat input with unfavourable heat distribution in the coal bed.

The aim of the invention, therefore, is to overcome the deficiencies described and to apply efficient means to solve this task by the following means:
• The ceiling of each oven chamber is provided with a plurality of inlet openings for primary air, the said inlets being anrranged such that the coking gas obtained during the coking process comes into contact with the desired quantity of primary air in a uniform manner;
• the said inlet openings for primary air are grouped above the oven for each chamber so that a separate feed can be operated via an air feeding system;
• the air feeding systems of the individual oven chambers are connected to a common air supply header system;
• and one control device each is installed between the common air supply header system and the individual feeders of the oven chambers so that the primary air quantity can be adjusted via a variation of the coking period.
[0007] In accordance with an embodiment of the invention, the common air supply system is slightly pressurized at a constant value that suffices to overcome the line resistance in the air supply system and counteracts the stack effect in the openings. It is recommended that this pressurisation be carried out by means of a blower. The air supply and feed systems are constructed as piping or duct systems.
[0008] The attached diagrams and charts serve to illustrate the said system, Fig. 1 showing a schematic and perspective view of the coking chamber, using the Heat-Recovery process, with coke filling opening 1, downcomer system 2 and ducts 3 arranged underneath and required to evacuate the combustion gases, and the said ducts may be equipped with internal post-combustion devices.
[0009] The system arranged above the coking chamber consists of feeder lines 4, each being connected with a plurality of feed openings 5. The said feeder lines 4 are connected to a common header system 6, which is slightly pressurised by means of blower 7.

[0010] List of reference designations
1 Coke filling opening
2 Downcomer system
3 Ducts
4 Feed lines
5 Feed openings
6 Collecting system
7 Blowers

Patent claims
1. Device for feeding combustion air required to burn coking gas in a coking chamber of a coke oven of the "Non-Recovery type" or "Heat-Recovery type", characterised in that
• the ceiling of each oven chamber is provided with a plurality of inlet openings
(5) for primary air, the said inlets being arranged such that the coking gas
obtained during the coking process comes into contact with the desired
quantity of primary air in a uniform manner;
• the said inlet openings for primary air are grouped above the oven for each
oven chamber so that a separate feed can be operated via an air feeding
system (4);
• the air feeding systems (4) of the individual oven chambers are connected to a
common air supply header system (6);
• and one control device each is installed between the common air supply
header system (6)and the individual feeders (4) of the oven chambers so that
the primary air quantity can be adjusted via a variation of the coking period.
2. Process according to Claim 1,
characterised in that the common air supply system can be slightly pressurised at a constant value.
3. Process for feeding combustion air required to burn coking gas by means of a
device in accordance with Claim 2,
characterised in that the common air supply system is slightly pressurised at a constant value.
Dated this 3 day of December 2007

Documents:

http://ipindiaonline.gov.in/patentsearch/GrantedSearch/viewdoc.aspx?id=6onw67QwnXV12wKwGx+wBA==&loc=egcICQiyoj82NGgGrC5ChA==

« Previous Patent

Next Patent »

Patent Number

268508

Indian Patent Application Number

5535/CHENP/2007

PG Journal Number

36/2015

Publication Date

04-Sep-2015

Grant Date

31-Aug-2015

Date of Filing

03-Dec-2007

Name of Patentee

UHDE GMBH

Applicant Address

FRIEDRICH-UHDE-STRASSE 15, 44141 DORTMUND, GERMANY

Inventors:

#	Inventor's Name	Inventor's Address
1	SCHUCKER, FRNZ-JOSEF	WITTENER STRASSE 135, 44577 CASTROP-RAUXEL, GERMANY
2	KIM, RONALD	RAUMERSTRASSE 52, 45144 ESSEN, GERMANY

PCT International Classification Number

C10B 15/02

PCT International Application Number

PCT/EP06/04871

PCT International Filing date

2006-05-23

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	102005025955.3	2005-06-03	Germany