CA1206910A - Coke-furnace block - Google Patents
Coke-furnace blockInfo
- Publication number
- CA1206910A CA1206910A CA000404240A CA404240A CA1206910A CA 1206910 A CA1206910 A CA 1206910A CA 000404240 A CA000404240 A CA 000404240A CA 404240 A CA404240 A CA 404240A CA 1206910 A CA1206910 A CA 1206910A
- Authority
- CA
- Canada
- Prior art keywords
- regenerators
- gas
- coke
- air
- checker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011449 brick Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000010304 firing Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 19
- 206010022000 influenza Diseases 0.000 description 3
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B5/00—Coke ovens with horizontal chambers
- C10B5/10—Coke ovens with horizontal chambers with heat-exchange devices
- C10B5/12—Coke ovens with horizontal chambers with heat-exchange devices with regenerators
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Secondary Cells (AREA)
- Carbon And Carbon Compounds (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Coke Industry (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Coke-furnace block particularly with regenerators divided into two parts, for firing with strong and/or weak gas, is characterized by having lower furnaces with unequal widths in alternating sequence. Preferred embodiments include two adjacent lower furnaces together having the same width as two corresponding upper furnaces; having the center lines of the lower furnaces align plumb with the center lines of oven cham-bers situated above them; having the open chamber widths of two adjacent regenerators relate to each other within the limits 1:1 up to the ratio of amounts of gas to air passing there-through during operation; having the cross-sections of gas and air channels in the furnace bottoms in the same relation to each other as the amounts of gas and air passing therethrough;
and providing the regenerator checker-bricks in two adjacent regenerators with equal or unequal specific heat exchange sur-faces and/or free channel cross-sections.
Coke-furnace block particularly with regenerators divided into two parts, for firing with strong and/or weak gas, is characterized by having lower furnaces with unequal widths in alternating sequence. Preferred embodiments include two adjacent lower furnaces together having the same width as two corresponding upper furnaces; having the center lines of the lower furnaces align plumb with the center lines of oven cham-bers situated above them; having the open chamber widths of two adjacent regenerators relate to each other within the limits 1:1 up to the ratio of amounts of gas to air passing there-through during operation; having the cross-sections of gas and air channels in the furnace bottoms in the same relation to each other as the amounts of gas and air passing therethrough;
and providing the regenerator checker-bricks in two adjacent regenerators with equal or unequal specific heat exchange sur-faces and/or free channel cross-sections.
Description
lZ~6~1~
1 The invention concerns a coke-furnace block or bat-tery, in particular with regenerators divided roughly into two units each, for the firing with strong and/or weak gas.
With today's energy situation, so-called weak gas (blast-furnace gas) produced for the firing of coke furnaces even with very low heating value, for example about 3000 kJ/N/m3, becomes more and more important. The desire becomes increasingly one of economizing completely or partially on the previously customary admixture of strong gas, even to a heating value ob-tained by having equal amounts of gas and air flow through thefurnace. Accordingly, technologies will develop whereby such blast-furnace waste gas will be used, with which the ratio amount of gas to air differs essentially from 1:1. This im-plies, in connection with the coking furnaces, a different load-ing of adjacent regenerators for the heating up respectively of gas and air.
It is therefore an object of the present invention to employ such gas mixtures in coking-furnace blocks for the undergrate firing, without having as a result that the effic-iency of the heat exchange drops and, through a variability ofthe flowing amounts, that noteworthy pxessure differences occur in the adjacent chambers or that a falling below the dew point in the regenerators is able to take place. As is well known, such problems with coking-furnace blocks having longitudinally divided regenerators can be appropriately solved by displacing the dividing walls which sever them into the gas compartments and the air compartments.
According to the present invention, with coking-furnace batteries having regenerators preferably divided in half and upper furnaces with equal center-to-center spacing, 120~;9~0 1 such lower furnaces are usea which display in alternating se-quence, unequal widths. (By "upper furnace" is understood the parts between furnace bottom and top edge of the furnace cover, and by "lower furnace" the parts between furnace bottom and foundation.) With this arrangement, each two adjacent lower furnaces together should have the same width as two upper furn-aces. Moreover, the center lines of the lower furnaces (regener-ators) should align plumb with the centerlines of the oven cham-bers situated above. The dividing walls of the regenerators should therewith in normal manner be built equally thick, while the open widths of the regenerator chambers are unequal.
According to the present invention the ratio of open chamber widths of two adjacent regenerators can be worked out in proportion to the amounts of gas and air passing respectively therethrough. In this case, with use of equivalent so-called checker-brick or grid brick in both chambers, there results the same regenerator efficiency and the same pressure conditions in both neighboring regenerators. The ratio of open regenerator chamber widths can be worked out though, even less than the ratio of amounts of gas to air, although it should still be greater than 1:1. In this case either slight differences with regard to the regenerator efficiency and also small pressure difference between adjacent chambers can occur with use of equivalent checker-brick, or check-brick with differing specific heat ex-change surfaces and/or corresponding free average cross-sections should be used. In the latter case, one obtains, on the other hand, that in both adjacent regenerators for the heating up of gas or air, the regenerator efficiences are the same and no pressure differences occur between both chambers.
The invention provides further that the gas and air 120~0 1 channel cross-sections in the furnace bottoms are in the same relation to each other as the amounts of gas to air. Hereby it should be prevented that through different pressure loss in the canals retroactively different pressure conditions occur in ad-jacent regenerators.
With use of an underburner system for the heating of strong gas, the vertical gas conduits can be disposed centrical-ly or also eccentrically in the regenerator dividing walls.
The novel features which are considered characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construc-tion and its method of operation, together with additional ob-jects and advantages thereof, will be best understood from the following description of specific embodiments when read in con-nection with the accompanying drawing.
The single FIGURE illustrates by way of example, a part of a longitudinal section through a coking-furnace block according to the present invention.
In the FIGURE, reference numerals 1 signify the oven chambers, and 2 the heating walls lying therebtween, which to-gether form the mentioned upper furnaces. The lower furnaces are composed essentially of the regenerators and the bottom flues located thereunder. ~s is evident from the FIGURE, regenerator 3 for air is of smaller width than regenerator 4 for gas accord-ing to the present invention. Correspondingly, the bottom flues 5 for air are narrower than the bottom flues 6 for gas. The dimensions are thereby so affected that two oven divisions a display the same width as the air regenerator part b plus the gas regenerator part c. The center lines of the regenerators are aligned herewith with the center lines of the oven chambers ` lZ06~10 1 located above, while each second regenerator dividing wall is displaced in relation to the heating wall disposed above it.
It will be understood that each of the elements described above, or two or more together, may also find a use-ful application in other types of heating arrangements differ-ing from the types described above~
While the invention has been illustrated and described as embodied in a coke-furnace block, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so ful-ly reveal the gist of the present invention that others can, by applying current knowledge,l readily adapt it for various applications without omitting features that, from the stand-point of prior art, fairly constituted essential characteristics of the generic or specific aspects of this invention.
1 The invention concerns a coke-furnace block or bat-tery, in particular with regenerators divided roughly into two units each, for the firing with strong and/or weak gas.
With today's energy situation, so-called weak gas (blast-furnace gas) produced for the firing of coke furnaces even with very low heating value, for example about 3000 kJ/N/m3, becomes more and more important. The desire becomes increasingly one of economizing completely or partially on the previously customary admixture of strong gas, even to a heating value ob-tained by having equal amounts of gas and air flow through thefurnace. Accordingly, technologies will develop whereby such blast-furnace waste gas will be used, with which the ratio amount of gas to air differs essentially from 1:1. This im-plies, in connection with the coking furnaces, a different load-ing of adjacent regenerators for the heating up respectively of gas and air.
It is therefore an object of the present invention to employ such gas mixtures in coking-furnace blocks for the undergrate firing, without having as a result that the effic-iency of the heat exchange drops and, through a variability ofthe flowing amounts, that noteworthy pxessure differences occur in the adjacent chambers or that a falling below the dew point in the regenerators is able to take place. As is well known, such problems with coking-furnace blocks having longitudinally divided regenerators can be appropriately solved by displacing the dividing walls which sever them into the gas compartments and the air compartments.
According to the present invention, with coking-furnace batteries having regenerators preferably divided in half and upper furnaces with equal center-to-center spacing, 120~;9~0 1 such lower furnaces are usea which display in alternating se-quence, unequal widths. (By "upper furnace" is understood the parts between furnace bottom and top edge of the furnace cover, and by "lower furnace" the parts between furnace bottom and foundation.) With this arrangement, each two adjacent lower furnaces together should have the same width as two upper furn-aces. Moreover, the center lines of the lower furnaces (regener-ators) should align plumb with the centerlines of the oven cham-bers situated above. The dividing walls of the regenerators should therewith in normal manner be built equally thick, while the open widths of the regenerator chambers are unequal.
According to the present invention the ratio of open chamber widths of two adjacent regenerators can be worked out in proportion to the amounts of gas and air passing respectively therethrough. In this case, with use of equivalent so-called checker-brick or grid brick in both chambers, there results the same regenerator efficiency and the same pressure conditions in both neighboring regenerators. The ratio of open regenerator chamber widths can be worked out though, even less than the ratio of amounts of gas to air, although it should still be greater than 1:1. In this case either slight differences with regard to the regenerator efficiency and also small pressure difference between adjacent chambers can occur with use of equivalent checker-brick, or check-brick with differing specific heat ex-change surfaces and/or corresponding free average cross-sections should be used. In the latter case, one obtains, on the other hand, that in both adjacent regenerators for the heating up of gas or air, the regenerator efficiences are the same and no pressure differences occur between both chambers.
The invention provides further that the gas and air 120~0 1 channel cross-sections in the furnace bottoms are in the same relation to each other as the amounts of gas to air. Hereby it should be prevented that through different pressure loss in the canals retroactively different pressure conditions occur in ad-jacent regenerators.
With use of an underburner system for the heating of strong gas, the vertical gas conduits can be disposed centrical-ly or also eccentrically in the regenerator dividing walls.
The novel features which are considered characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construc-tion and its method of operation, together with additional ob-jects and advantages thereof, will be best understood from the following description of specific embodiments when read in con-nection with the accompanying drawing.
The single FIGURE illustrates by way of example, a part of a longitudinal section through a coking-furnace block according to the present invention.
In the FIGURE, reference numerals 1 signify the oven chambers, and 2 the heating walls lying therebtween, which to-gether form the mentioned upper furnaces. The lower furnaces are composed essentially of the regenerators and the bottom flues located thereunder. ~s is evident from the FIGURE, regenerator 3 for air is of smaller width than regenerator 4 for gas accord-ing to the present invention. Correspondingly, the bottom flues 5 for air are narrower than the bottom flues 6 for gas. The dimensions are thereby so affected that two oven divisions a display the same width as the air regenerator part b plus the gas regenerator part c. The center lines of the regenerators are aligned herewith with the center lines of the oven chambers ` lZ06~10 1 located above, while each second regenerator dividing wall is displaced in relation to the heating wall disposed above it.
It will be understood that each of the elements described above, or two or more together, may also find a use-ful application in other types of heating arrangements differ-ing from the types described above~
While the invention has been illustrated and described as embodied in a coke-furnace block, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so ful-ly reveal the gist of the present invention that others can, by applying current knowledge,l readily adapt it for various applications without omitting features that, from the stand-point of prior art, fairly constituted essential characteristics of the generic or specific aspects of this invention.
Claims (9)
1. A coke-furnace block with regenerators divided into two units respectively for gas and air, comprising an upper section having upper furnaces composed of oven chambers with heating walls disposed between said oven chambers and a lower section composed of regenerators for heating up of gas and air for said heating walls, said regenerators respectively for gas and air having unequal widths in alternating sequence.
2. Coke-furnace block according to claim 1, wherein each two adjacent regenerators together have the same width as two upper furnaces.
3. Coke-furnace block according to claim 1, wherein the center lines of said regenerators align plumb with the center lines of oven chambers situated above said regenerators.
4. Coke-furnace block according to claim 1, wherein the widths of two adjacent regenerators respectively for gas and air are related to each other within the limits greater than 1:1 up to the ratio of amounts of gas and air which pass respec-tively therethrough during operation.
5. Coke-furnace block according to claim 1, further comprising a furnace bottom below said regenerators and provided with a gas channel and an air channel, wherein the cross-sections of said gas channel and said air channel in said furnace bottom are in the same ratio to each other as the amounts of gas and air which pass respectively therethrough during operation.
6. Coke-furnace block according to claim 1, further comprising checker-bricks lining the inside of or constituting the structure of said regenerators, wherein said checker-bricks in two adjacent regenerators are provided with equal specific heat exchange surfaces.
7. Coke-furnace block according to claim 1, further comprising checker-bricks lining the inside of or constituting the structure of said regenerators wherein said checker-bricks in two adjacent regenerators are provided with equal free channel cross-sections.
8. Coke-furnace block according to claim 1, further comprising checker-bricks lining the inside of or constituting the structure of said regenerators, wherein said checker-bricks in two adjacent regenerators are provided with unequal specific heat exchange surfaces.
9. Coke-furnace block according to claim 1, further comprising checker-bricks lining the inside of or constituting the structure of said regenerators, wherein said checker-bricks in two adjacent regenerators are provided with unequal free channel cross-sections.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3122344.3 | 1981-06-05 | ||
| DE19813122344 DE3122344A1 (en) | 1981-06-05 | 1981-06-05 | COOKING OVEN BATTERY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1206910A true CA1206910A (en) | 1986-07-02 |
Family
ID=6133992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000404240A Expired CA1206910A (en) | 1981-06-05 | 1982-06-01 | Coke-furnace block |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0066711B1 (en) |
| JP (1) | JPS57209985A (en) |
| AT (1) | ATE24539T1 (en) |
| AU (1) | AU545484B2 (en) |
| BR (1) | BR8203280A (en) |
| CA (1) | CA1206910A (en) |
| DE (2) | DE3122344A1 (en) |
| ES (1) | ES272083Y (en) |
| ZA (1) | ZA822973B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE542154C (en) * | 1930-08-16 | 1932-01-20 | Hinselmann | Coke oven with regenerators under the ovens |
| DE739237C (en) * | 1940-03-09 | 1943-09-15 | Otto & Co Gmbh Dr C | Horizontal coke oven |
-
1981
- 1981-06-05 DE DE19813122344 patent/DE3122344A1/en not_active Withdrawn
-
1982
- 1982-04-29 ES ES1982272083U patent/ES272083Y/en not_active Expired
- 1982-04-30 ZA ZA822973A patent/ZA822973B/en unknown
- 1982-05-03 EP EP82103762A patent/EP0066711B1/en not_active Expired
- 1982-05-03 AT AT82103762T patent/ATE24539T1/en not_active IP Right Cessation
- 1982-05-03 DE DE8282103762T patent/DE3274877D1/en not_active Expired
- 1982-06-01 CA CA000404240A patent/CA1206910A/en not_active Expired
- 1982-06-02 JP JP57093246A patent/JPS57209985A/en active Granted
- 1982-06-02 AU AU84421/82A patent/AU545484B2/en not_active Ceased
- 1982-06-03 BR BR8203280A patent/BR8203280A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3274877D1 (en) | 1987-02-05 |
| JPS57209985A (en) | 1982-12-23 |
| AU8442182A (en) | 1982-12-09 |
| ES272083U (en) | 1984-01-16 |
| EP0066711B1 (en) | 1986-12-30 |
| ZA822973B (en) | 1983-03-30 |
| AU545484B2 (en) | 1985-07-18 |
| EP0066711A3 (en) | 1984-09-26 |
| JPH0322433B2 (en) | 1991-03-26 |
| EP0066711A2 (en) | 1982-12-15 |
| ES272083Y (en) | 1984-08-01 |
| BR8203280A (en) | 1983-05-24 |
| DE3122344A1 (en) | 1982-12-23 |
| ATE24539T1 (en) | 1987-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |