CN2153752Y - Fuel heating furnace - Google Patents
Fuel heating furnace Download PDFInfo
- Publication number
- CN2153752Y CN2153752Y CN 92234364 CN92234364U CN2153752Y CN 2153752 Y CN2153752 Y CN 2153752Y CN 92234364 CN92234364 CN 92234364 CN 92234364 U CN92234364 U CN 92234364U CN 2153752 Y CN2153752 Y CN 2153752Y
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- flue
- side wall
- alloy molten
- wall flue
- 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 - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 239000000446 fuel Substances 0.000 title claims description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 235000015111 chews Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000007598 dipping method Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000007747 plating Methods 0.000 abstract description 3
- 229910021652 non-ferrous alloy Inorganic materials 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005246 galvanizing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005269 aluminizing Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 kirsite Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The method is suitable for heating furnaces for non-ferrous alloy smelting, hot dipping and the like. It is composed of furnace body, alloy molten pool, combustion chamber and burning (spraying) nozzle. The furnace is characterized in that a furnace mouth and a combustion chamber are arranged above an alloy molten pool, a side wall flue is arranged on the side wall of the alloy molten pool, the combustion chamber is composed of a closed space surrounded by a dead partition wall, the side wall flue and the upper surface of a melting furnace, and the side wall flue adopts a vertically long double-layer structure. Because the auxiliary combustion mechanism of the upper heating feeding and the side wall flue is adopted, the device has the advantages of convenient operation, high heat efficiency, high smelting and dip plating quality and the like.
Description
The utility model is a kind of reinforced melt heating furnace of going up heating of, and can be used for melting nonferrous alloy, galvanizing by dipping, fields such as hot-dip aluminizing.
Existing fuel heating furnace can be divided into two classes, and a class is reflective stove, and another kind of is pot type furnace.Reflective stove is to heat above melt, no crucible, and the side feeds intake, and is characterized in that energy utilization rate is higher, and melt quality is also better, but owing to can't realize feeding intake, therefore, inconvenient operation, technologies such as hot-dip can't be used.The fire door of pot type furnace is located at the melt top, it is easy to operate, but because heating is side or bottom at melt, heat will be by the sidewall of crucible transmission, burner hearth operating temperature height, and heat loss is big, and require the thermal conductivity factor of crucible big, chemical stability is strong, has both made like this, and crucible material is a very big difficult problem to the pollution of melt always.
The purpose of this utility model is for overcoming the above-mentioned shortcoming of existing Fuel Furnace, provide a kind of easy to operate, thermal efficiency height, the New-type fuel heating furnace of raising melting and hot-dip quality.
In conjunction with the accompanying drawings concrete scheme of the present utility model is described below:
Fig. 1 is the profilograph of fuel heating furnace;
Fig. 2 is the inside wall flue profilograph of side wall flue 5 in the fuel heating furnace;
Fig. 3 is the drawing in side sectional elevation of Fig. 1;
Fig. 4 is the drawing in side sectional elevation of circular body of heater;
1 is melt in the molten bath among the figure, the 2nd, insert in the melt 1 but on earth divider wall not, and the 3rd, the combustion chamber. The 4th, burn (spray) and chew the hole, the 5th, the side wall flue, the 6th, the auxiliary air entrance, the 7th, the dividing plate between auxiliary air and flue, the 8th, secondary-air passage, the 9th, smokejack, the 10th, flame retardant coating, the 11st, heat-insulation layer, the 12nd, fire door, the 13rd, burn (spray) and chew.
Chew the fuel heating furnace that forms by body of heater, alloy molten bath, combustion chamber, burning (spray), its special character is for realizing upper reinforced heating, fire door 12 and combustion chamber 3 are arranged in the top in alloy molten bath, in the middle of fire door 12 is arranged in, combustion chamber 3 be arranged in fire door 12 around, burning (spray) is chewed 13 and is contained on the sidewall of body of heater, and it goes out Mouthfuls 4 communicate with combustion chamber 3. In order to make full combustion of fuel, to evenly rapidly heating of melt 1, sidewall in the alloy molten bath is equipped with side wall flue 5, its top communicates with combustion chamber 3, secondary-air passage 8, smokejack 10 respectively, build flame retardant coating 10 by laying bricks or stones in the outside of side wall flue 5, the outside is heat-insulation layer 11 again, and outermost layer is the steel plate furnace shell.
More than said combustion chamber 3 be to constitute like this: it by inserting in the melt 1 but not on earth the enclosure space that upper surface surrounded of divider wall 2, side flue 5 and melt 1 constitute, have burning (spray) and chew hole 4 on the wall of combustion chamber 3, burning (spray) is chewed 13 and is contained in the hole.
More than said side wall flue 5 be arranged in around the sidewall in alloy molten bath, can arrange or part is arranged according to specific requirement is complete.Side wall flue 5 adopts perpendicular long double-decker, is the inside wall flue near alloy melt one side, and its top communicates with combustion chamber 3, and skin is the external wall flue.Be provided with auxiliary air inlet 6 at the top of inside wall flue, it communicates with the secondary-air passage 8 that is arranged in upper of furnace body, because inside wall flue and combustion chamber 3 UNICOMs, combustion chamber 3 interior imperfect combustion fuel are entered in the inside wall flue 5 with high-temperature flue gas, and with mix the heat release that burns away by auxiliary air inlet 6 auxiliary airs that spray into, pass to melt 1 by side wall.In fact the inside wall flue has played the effect of auxiliary combustion chamber.In order to realize that melt 1 is evenly heated, the flow direction to high-temperature fuel gas (or flue gas) need be controlled, therefore, in interior external wall flue, be equipped with partition wall and have the flue gas communication port at the top and the bottom of partition wall bit interleave, and also be provided with the flue gas communication port between interior external wall flue, the outlet of external wall flue communicates with near the secondary-air passage 8 that is arranged in upper of furnace body smokejack 9.The flue gas (or combustion gas) of discharging in the combustion chamber 3 is up and down reciprocatingly flowed in the inside wall flue, realization is to the even heating of melt 1, then flue gas again the flue gas communication port between interior external wall flue enter the external wall flue, up and down reciprocatingly flow with the direction opposite, enter smokejack 9 at last and discharge with the inside wall flue.The main effect of external wall flue be utilize fume afterheat to furnace insulation to improve heat utilization efficiency.Smokejack 9 is arranged near secondary-air passage 8, purpose is to utilize fume afterheat to the auxiliary air preheating, burn with fuel mix immediately after making auxiliary air enter the inside wall flue, therefore, the dividing plate 7 between secondary-air passage 8 and the smokejack 9 should select for use the bigger material of thermal conductivity factor to be advisable.
In order to make the melt 1 in the alloy molten bath be unlikely to flow in the side wall flue, the flue gas communication port that inside wall flue top communicates with combustion chamber 3 will be higher than the upper surface of melt 1.Consider the unsuitable too high requirement of melt temperature of bottom, alloy molten bath, the bottom of side wall flue can exceed alloy molten bath bottom surface 100-200mm.
According to concrete technological requirement, other shape and structure of circular formula can be adopted in the alloy molten bath, if adopt circular configuration, burn (spray) chew 13 can be along the combustion chamber 3 tangent line arrange, thereby like this owing to the fuel oil or the combustion gas that spray into can improve combustion efficiency greatly along circular chamber's wall rotational flow.
The advantage of such scheme: since with fire door and combustion chamber placement above melt, the upper surface of melt is divided into the last area of heating surface and the operating surface of reverberatory furnace formula, having overcome existing heating furnace heats on irrealizable and goes up reinforced shortcoming, thereby make the stove overall structure more reasonable, so not only has the high advantage of the reverberatory furnace thermal efficiency, and it is reinforced easy to operate, because without crucible, avoided the crucible material contaminated melt, particularly adopt the side wall flue structure, the thermal efficiency and the processing technology of stove are obviously improved, technologies such as hot-dip can be carried out on this stove.
Such scheme of the present utility model can be realized by following examples:
Embodiment 1 is used for the heating furnace of steel construction piece hot-dip galvanizing technique.
Heating furnace structure when being used for hot-dip galvanizing technique such as Fig. 1, Fig. 2, shown in Figure 3.Its fire door adopts up big and down small structure, and the size of fire door process under the situation of maximum workpiece requirement as far as possible little to satisfy, with minimizing thermal loss, energy savings.Burner hearth adopts rectangular configuration, and zinc liquid temperature was stable when the melt total amount should enough guarantee ordinary production.The side wall flue is made up of the building block of many groups, in the building block connection place, puts on the flue gas communication port and exceeds melt liquid level, can avoid the melt flue that bleeds like this.For reducing melt by the possibility of oozing out in adjacent two building block seams, the faying face of blockhouse also can be made tortuous shape.For ease of adjusting the temperature of burning gases, select for use full hot blast to burn and chew, one time wind is chewed supply by burning, and this moment, coefficient of excess air α value was selected between 0.8～0.98, to cause the little reducing atmosphere in the combustion chamber 3, prevented the oxidation of zinc liquid.By secondary air supply 6,8, remaining air is infeeded the side wall flue, impel fuel completing combustion therein.The obstructed flue gas of height of 100～200mm is reserved in the bottom of side wall flue, is used to obtain the lower temperature region of melt bottom, is convenient to drag for the carrying out of slag process.This embodiment is applicable to wire rod in principle, the continous way hot-dip galvanizing technique process of band.
Because during hot-dip aluminizing, aluminium liquid surface can form the oxide-film of one deck densification, further oxidation does not take place in protection aluminium liquid.In order to prevent the ooze hydrogen effect of reducing atmosphere to aluminium liquid, in the combustion chamber 3 micro-oxygenation atmosphere, coefficient of excess air α=1.0～1.10.Combustion process was just finished before entering the side wall flue, therefore, structurally can save secondary wind air feed system 6,7,8.Other structure of stove and design application of principle and embodiment 1 are identical.
For as less parts of some sizes such as bolt, nut, hot-water heating connecting pieces, though can adopt embodiment 1,2 described methods, because part is little, output is little, the stove size is less, adopts the burner hearth of rectangular configuration that a lot of inconveniences are arranged.Type of furnace variation is spherical hearth shown in Figure 4 for this reason.Identical among the figure among the title of each numbered block, function and Fig. 1-Fig. 3.Spherical hearth requires in order to adapt to, the side wall flue is processed into arc.The combustion chamber is for going in ring, and burning is chewed and is arranged in the tangent to periphery direction, and fuel sprays into back rotary combustion in the combustion chamber by part 13, and in position enters the side wall flue, finishes whole heat transfer process.
When as the hot-dip galvanizing technique time spent, press the principle of embodiment 1, supply with required air at twice, combustion process is finally finished in the side wall flue, and secondary wind feed system is supplied with enough air.
When as the hot dipping aluminium plating technology time spent, press the principle of embodiment 2, save secondary wind feed system, combustion process is all finished in combustion chamber 3, and causes the micro-oxygenation atmosphere in the combustion chamber.
Heated melt is that the salt of fusion is (as BaCl in stove
2, NaCl, KCl etc.) this type of furnace just can be used as the salt bath heat-treatment furnace.Preferably keep this moment and be neutral atmosphere in the combustion chamber 3.
Embodiment 4 is used for smelting non-ferrous metal
The melting of the scrap of non-ferrous metal such as kirsite, aluminium alloy, slag etc. has very high economic worth, but the recovery of pyrogenic process generally scaling loss is big, productivity ratio is low, has limited the development of producing.Adopt the type of furnace of the present utility model,, just can guarantee under anaerobic environment, to melt waste residue, bits, reasonable operating condition is arranged again simultaneously as long as install a batch charging mechanism.
Charging mechanism can be made spiral feeder form, and its front end tiltedly is inserted into the middle and lower part of melt by the top, combustion chamber.Be positioned at the part of stove, with thermal conductivity refractory material manufacturing preferably, flame removes direct melt heating surface, outside the side wall flue, also directly heats the outer surface of screw feeder.Furnace charge is moved to the melt bottom under the spiral reinforcing on one side, on one side melted by heat.Arrive furnace bottom and finish fusion process, the floating bath surface of going up such as the impurity in the alloy is convenient to remove.
Owing to adopted last heating, output is not subjected to the crucible capacity limitation, and production efficiency improves, and furnace charge limit motion in spiral heater, and melt fast on the limit, has reduced scaling loss, has improved the quality and the rate of recovery of producing alloy.
Claims (5)
1, chews the fuel heating furnace of forming by body of heater, alloy molten bath, combustion chamber, burning (spray), it is characterized in that fire door 12 and combustion chamber 3 are arranged in top, alloy molten bath, in the middle of fire door 12 is arranged in, combustion chamber 3 is arranged in around the fire door 12, burning (spray) is chewed 13 and is contained on the side wall of furnace, its outlet 4 communicates with combustion chamber 3, side wall flue 5 is housed on the sidewall in alloy molten bath, its top respectively with combustion chamber 3, secondary-air passage 8, smokejack 9 communicate, flame retardant coating 10 is built in side wall flue 5 outsides by laying bricks or stones, and the outside is a heat-insulation layer 11 again, and outermost layer is the steel plate furnace shell.
2, fuel heating furnace according to claim 1 is characterized in that said combustion chamber 3 is to be made of on earth the enclosure space that upper surface surrounded of divider wall 2, side wall flue 5 and melt 1 not.
3, fuel heating furnace according to claim 1 and 2, it is characterized in that side wall flue 5 can be along alloy molten bath sidewall arranged around, it adopts perpendicular long double-decker, near alloy molten bath one side is the inside wall flue, its top communicates with combustion chamber 3, skin is the external wall flue, be equipped with partition wall in the interior external wall flue, the top and the bottom bit interleave of partition wall has the flue gas communication port, be provided with auxiliary air inlet 6 at the top of inside wall flue, it communicates with the secondary-air passage 8 that is arranged in upper of furnace body, is provided with the flue gas communication port between the interior external wall passage, and the outlet of external wall flue communicates with near being arranged in secondary-air passage 8 smokejack 9.
4, fuel heating furnace according to claim 1 is characterized in that flue gas communication port that inside wall flue top communicates with combustion chamber 3 will be higher than the upper surface of melt 1, and the bottom of side wall flue will exceed alloy molten bath bottom surface 100～200mm.
5, fuel heating furnace according to claim 1 is characterized in that the alloy molten bath can adopt circle or other shape and structure, if adopt circular configuration, burn (spray) chew 13 along the combustion chamber 3 tangent line layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234364 CN2153752Y (en) | 1992-09-26 | 1992-09-26 | Fuel heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234364 CN2153752Y (en) | 1992-09-26 | 1992-09-26 | Fuel heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2153752Y true CN2153752Y (en) | 1994-01-19 |
Family
ID=33776454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92234364 Expired - Fee Related CN2153752Y (en) | 1992-09-26 | 1992-09-26 | Fuel heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2153752Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968666A (en) * | 2014-05-26 | 2014-08-06 | 苏州卡迪亚铝业有限公司 | Smelting furnace for producing aluminium or aluminium alloy |
-
1992
- 1992-09-26 CN CN 92234364 patent/CN2153752Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968666A (en) * | 2014-05-26 | 2014-08-06 | 苏州卡迪亚铝业有限公司 | Smelting furnace for producing aluminium or aluminium alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |