US2478062A - Plant for heating galvanizing baths and other baths for containing molten material - Google Patents
Plant for heating galvanizing baths and other baths for containing molten material Download PDFInfo
- Publication number
- US2478062A US2478062A US646056A US64605646A US2478062A US 2478062 A US2478062 A US 2478062A US 646056 A US646056 A US 646056A US 64605646 A US64605646 A US 64605646A US 2478062 A US2478062 A US 2478062A
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- US
- United States
- Prior art keywords
- baths
- plant
- passages
- products
- combustion
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title description 8
- 238000005246 galvanizing Methods 0.000 title description 5
- 239000012768 molten material Substances 0.000 title description 5
- 238000002485 combustion reaction Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
Definitions
- the invention relates more especially to a plant for heating galvanising baths, but is applicable to other baths for containing molten material and has for its object to eifect improvements therein.
- heated gas or gases are conducted from a furnace or other heating appliance. through passages which pass round the upper parts of the sides of the bath, usually from the middle of one end, along the two sides to the middle of the other end, and from thence the gases are conducted to lower passages also passing along the sides of the bath and by which they are returned to the heater where they are reheated and recirculated.
- the fan is placed in the stream of gases at a point where the temperature is lowest, or at a point where it is considerably below maximum.
- the fan may, for instance, be placed so as to handle the gases just before they are-returned to the heater for reheating, or it may be placed at the point where the gases pass from the upper passages to the lower passages, or at some intermediate position.
- the heated gases are products of combustion, a proportion thereof is led oil to an uptake and such proportion made up by fresh products of combustion from the furnace.
- the return flow of gases may be impelled by the fan into a chamber which also receives products of combustion from the furnace, and from such chamber the gases are recirculated.
- FIG. 1 is a view, in longitudinal section, of a galvanising plant arranged according to the invention, the middle portion of the plant being shown broken away.
- Figure 2 is a sectional plan view of the plant shown in Figure 1, the upper half of the view being a section taken on the line 2, 2, of Figure 1, and the lower half being a section taken on the line 2a, 2a, of Figure 1.
- Figure 3 is a continuation of Figure 2.
- the delivery pipe l9 0! the fan leads to a lower transverse flue 20 communicating with two passages 2l which lead back over the lower parts of the sides of the bath l0, and return to the lower part of the mixing chamber l4 from which they are recirculated by the action of the fan l8.
- the gases are reheated in the chamber M which is exposed to the heat of the furnace and the products of combustion therefrom.
- a branch flue 23 Leading from one of the passages 2
- the flow of the gases along the flue 23 is controlled by a, damper 25.
- the flue 23 acts as a bleed-oflf from the system and the damper 25 consequently controls the rate of flow of products of combustion from the furnace into the system.
- a plant for heating a bath for containing molten material comprising a furnace from which products of combustion pass, a chamber into which the products of combustion pass, a bath, upper passages leading from said chamber along the upper parts of the outer sides of the bath, lower passages leading back from said upper passages along the lower parts of the outer sides of the said bath and from thence to the said chamber, a fan for circulating said products of combustion in said passages, said fan being located where the said upper passages deliver the heated gases to the lower passages, an uptake, a branch pipe by which a proportion of the products of combustion are led off to said uptake and a damper for controlling the flow of products of combustion along said branch pipe.
- a plant for heating a bath for containing molten material comprising a furnace from which products of combustion pass, a chamber into which the products of combustion pass, a bath, upper passages leading from said chamber along the upper parts or the outer sides of the bath, lower passages leading back from said upper passages along the lower parts 01' the outer sides 01' the said bath and from thence to the said chamber, a, fan for circulatingsaid products 01' combustion in said passages, said fan being located where the said upper passages deliver the heated gases to the lower passages, an uptake, a branch pipe by which a, proportion of the products of combustion are led oil to said uptake, said branch pipe leading from a location near the receiving end or said return passages, and a damper for controlling the flow of products of combustion along said branch pipe.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
g- 1949- J. J. STORDY 3,
PLANT FOR HEATING GALVANIZING BATES AND OTHER BATHS FOR CONTAINING MOLITEN MATERIAL I 2 Sheets-Sheet 1 Filed Feb. '7, 1946 IllnL 5 15 gtovciy.
I I f I 1 1949. J. J. STORDY PLANT FOR HEATING GALVANIZING BA'IHS AND OTHER BATI'IS FOR CONTAINING MOL'IEN MATERIAL Filed Feb. '7, 1946 2 Sheets-Sheet 2 VENTOR,
361m ovgly ATTORN EY.
Patented Aug. 2, 1949 PLANT FOR HEATING GALVANIZIN G BATHS AND OTHER BATHS FOR CONTAINING MOLTEN MATERIAL John James Sturdy, Penn, Wolverhampton, England, assignor to Thompson Brothers (Bilston) Limited, Bilston, England Application February 7, 1946, Serial No. 646,056
In Great Britain February 9, 1945 2 Claims. 1
The invention relates more especially to a plant for heating galvanising baths, but is applicable to other baths for containing molten material and has for its object to eifect improvements therein.
In the type of plant to which this invention relates, heated gas or gases are conducted from a furnace or other heating appliance. through passages which pass round the upper parts of the sides of the bath, usually from the middle of one end, along the two sides to the middle of the other end, and from thence the gases are conducted to lower passages also passing along the sides of the bath and by which they are returned to the heater where they are reheated and recirculated.
In order to effect the circulation of the gases it has been proposed to place a fan in the passage leading from the heater to the upper passages surrounding the bath, but this has the disadvantage that the temperature of the gases leaving the heater must be kept within such limit-s as will ensure that the fan will not suffer injury therefrom.
According to this invention the fan is placed in the stream of gases at a point where the temperature is lowest, or at a point where it is considerably below maximum. The fan may, for instance, be placed so as to handle the gases just before they are-returned to the heater for reheating, or it may be placed at the point where the gases pass from the upper passages to the lower passages, or at some intermediate position.
If the heated gases are products of combustion, a proportion thereof is led oil to an uptake and such proportion made up by fresh products of combustion from the furnace. In such case, the return flow of gases may be impelled by the fan into a chamber which also receives products of combustion from the furnace, and from such chamber the gases are recirculated.
An example of the invention is described with reference to the accompanying drawings, in which- Figure 1 is a view, in longitudinal section, of a galvanising plant arranged according to the invention, the middle portion of the plant being shown broken away.
Figure 2 is a sectional plan view of the plant shown in Figure 1, the upper half of the view being a section taken on the line 2, 2, of Figure 1, and the lower half being a section taken on the line 2a, 2a, of Figure 1.
Figure 3 is a continuation of Figure 2.
In these drawings, In is the alvanising bath and II the furnace, the hearth l2 of which is fed by an automatically controlled mechanical stoker l3. From the furnace the products of combustion are led through a mixing chamber M from which branch two upper passages l5 which pass along the upper part of the bath I0, one of these passages being shown in Figure 2. The passages [5 open at their ends into a transverse upper flue 16 from which there leads off a pipe H which forms the suction pipe of a fan [8.
The delivery pipe l9 0! the fan leads to a lower transverse flue 20 communicating with two passages 2l which lead back over the lower parts of the sides of the bath l0, and return to the lower part of the mixing chamber l4 from which they are recirculated by the action of the fan l8. The gases are reheated in the chamber M which is exposed to the heat of the furnace and the products of combustion therefrom.
Leading from one of the passages 2| is a branch flue 23 which leads to an uptake 24. The flow of the gases along the flue 23 is controlled by a, damper 25.
The flue 23 acts as a bleed-oflf from the system and the damper 25 consequently controls the rate of flow of products of combustion from the furnace into the system.
26 is a flue leading from the suction pipe H to I the uptake 24. It is for use in case of a breakdown in the fan. Normally it is closed off by a damper 21.
Having fully described my invention, what I claim and desire to secure by Letters Patent is:
l. A plant for heating a bath for containing molten material and comprising a furnace from which products of combustion pass, a chamber into which the products of combustion pass, a bath, upper passages leading from said chamber along the upper parts of the outer sides of the bath, lower passages leading back from said upper passages along the lower parts of the outer sides of the said bath and from thence to the said chamber, a fan for circulating said products of combustion in said passages, said fan being located where the said upper passages deliver the heated gases to the lower passages, an uptake, a branch pipe by which a proportion of the products of combustion are led off to said uptake and a damper for controlling the flow of products of combustion along said branch pipe. 2. A plant for heating a bath for containing molten material and comprising a furnace from which products of combustion pass, a chamber into which the products of combustion pass, a bath, upper passages leading from said chamber along the upper parts or the outer sides of the bath, lower passages leading back from said upper passages along the lower parts 01' the outer sides 01' the said bath and from thence to the said chamber, a, fan for circulatingsaid products 01' combustion in said passages, said fan being located where the said upper passages deliver the heated gases to the lower passages, an uptake, a branch pipe by which a, proportion of the products of combustion are led oil to said uptake, said branch pipe leading from a location near the receiving end or said return passages, and a damper for controlling the flow of products of combustion along said branch pipe.
- JOHN JAMES STORDY.
i ammcas 0mm The following reierouees are oi. record in the me of this patent:
UNITED STATES PATENTS Number
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2478062X | 1945-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2478062A true US2478062A (en) | 1949-08-02 |
Family
ID=10907946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US646056A Expired - Lifetime US2478062A (en) | 1945-02-09 | 1946-02-07 | Plant for heating galvanizing baths and other baths for containing molten material |
Country Status (1)
Country | Link |
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US (1) | US2478062A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051461A (en) * | 1959-03-26 | 1962-08-28 | Tancred & Langley Ltd | Processing baths |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US515594A (en) * | 1894-02-27 | liebau | ||
US1857364A (en) * | 1929-05-29 | 1932-05-10 | Universal Oil Prod Co | Furnace |
US2285364A (en) * | 1941-05-19 | 1942-06-02 | Crane Co | Galvanizing kettle |
-
1946
- 1946-02-07 US US646056A patent/US2478062A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US515594A (en) * | 1894-02-27 | liebau | ||
US1857364A (en) * | 1929-05-29 | 1932-05-10 | Universal Oil Prod Co | Furnace |
US2285364A (en) * | 1941-05-19 | 1942-06-02 | Crane Co | Galvanizing kettle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051461A (en) * | 1959-03-26 | 1962-08-28 | Tancred & Langley Ltd | Processing baths |
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