CN103017509A - Furnace bar type natural gas cupola carbon heat exchange bed - Google Patents
Furnace bar type natural gas cupola carbon heat exchange bed Download PDFInfo
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- CN103017509A CN103017509A CN2012105332184A CN201210533218A CN103017509A CN 103017509 A CN103017509 A CN 103017509A CN 2012105332184 A CN2012105332184 A CN 2012105332184A CN 201210533218 A CN201210533218 A CN 201210533218A CN 103017509 A CN103017509 A CN 103017509A
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- exchange bed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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Abstract
The invention discloses a furnace bar type natural gas cupola carbon heat exchange bed which comprises a furnace body, wherein a water-cooling furnace bar is arranged in a lower-middle in the furnace body, a heat exchange bed body is arranged above the water-cooling furnace bar and is a mixture of carbon blocks and refractory ceramic balls; a plurality of air supply outlets are arranged in the furnace wall of the upper part of the water-cooling bar, a metal furnace material is arranged above the heat exchange bed, and a plurality of layers of coke are arranged in the metal furnace material. The furnace bar type natural gas cupola carbon heat exchange bed has the beneficial effects that the carbon material is used as a heat exchange material to develop a role of the carbon material to molten iron, the chemical heat loss is reduced, the heat supply of the heat exchange heat bed is enhanced, and the purposes of recarburizing the molten iron, reducing alloy burning loss, improving quality of the molten iron, simplifying the structure of a combustion chamber of a natural gas cupola and improving the melting property of the natural gas cupola are achieved; and the proportion of the carbon heat exchange material to the heat exchange material can be regulated according to the metallurgy requirement of the furnace material and the processing temperature requirement of the molten iron, and the resource reasonable utilization and comprehensive utilization are realized.
Description
Technical field
The present invention relates to a kind of grate formula natural gas cupola carbonaceous heat exchange bed, belong to mineral processing production equipment field.
Background technology
At present, known grate formula natural gas cupola, heat exchange bed is to add hot iron liquid with the heat-stable ceramic ball as heat transferring medium.Because the material of Ceramic Balls is metal oxide, iron liquid there is not metallurgy action, in the furnace cupola oxidizing atmosphere, metallic element in the iron liquid and carbon are all by oxygen, carbon dioxide and some other oxide oxidization burning loss, simultaneously carbon is also oxidized during metal oxide in reduced iron liquid, therefore, the phosphorus content of iron liquid descends serious, need to take in addition technical measures to increase iron liquid phosphorus content.On the other hand, Ceramic Balls itself can not produce heat, can only shift to iron liquid the heat of furnace gas, because the heat transfer efficiency between furnace gas and the Ceramic Balls is lower than Ceramic Balls to the heat transfer efficiency of iron liquid, usually cause the heat utilization ratio of furnace gas lower, iron liquid do not reach technological requirement through the heat exchange bed temperature rise, need to be further overheated in the combustion chamber, therefore require larger molten bath is set in the combustion chamber, bring difficulty for structure and the heat-resisting life of combustion chamber.
Summary of the invention
Deficiency for the prior art existence, technical problem to be solved by this invention is, a kind of grate formula natural gas cupola carbonaceous heat exchange bed is provided, solve existing technology and can not finish the deficiency of the carburetting of iron liquid and metallurgical process, can not only finish the carburetting of iron liquid, reduce the scaling loss of alloying element in the iron liquid, and can satisfy the melting requirement of different trade mark iron liquid.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of grate formula natural gas cupola carbonaceous heat exchange bed, comprise shaft, the middle part is provided with water cooled grating in the position on the lower in the shaft, its water cooled grating top is provided with heat exchange bed, and heat exchange bed is the mixture of carbonaceous blocks and refractory ceramics ball; Offer some air outlets on the furnace wall, top of described water cooled grating; The top of described heat exchange bed is provided with metal charge, is provided with some burnt layer by layer in the metal charge.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed, its air outlet is connected with ajutage, and ajutage connects bellows.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed, the vertical range of its air outlet and water cooled grating is 400mm, and air outlet annular on shaft arranges, and the spacing of air outlet is 300mm, and the air port ratio of air outlet is 1.5%.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed, the ratio that its carbonaceous blocks accounts for heat exchange bed is 50%--100%.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed, the height of its heat exchange bed is 500-600mm, the lumpiness of carbonaceous blocks is 60-100mm.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed is provided with air-valve on its ajutage.
Optimize, above-mentioned grate formula natural gas cupola carbonaceous heat exchange bed, the below of its shaft is provided with chassis, and shaft is connected with chassis by the combustion chamber elevating mechanism; Described chassis is connected on the track on the fixed bottom boundary.
The invention has the beneficial effects as follows, when utilizing carbonaceous material as the heat exchange material, the performance carbonaceous material is to the metallurgy action of iron liquid, reduce the chemical heat loss, strengthen the heat exchange bed heat supply, reach the carburetting of iron liquid, reduce burning loss of alloy, improve iron liquid quality, simplify the natural gas cupola chamber structure, improve the purpose of natural gas cupola melting performance; The ratio that carbonaceous heat exchange material accounts for the heat exchange material can require according to the metallurgy of furnace charge to require to adjust with iron liquid treatment temperature; Take full advantage of the outstanding advantages of natural gas cupola energy-conserving and environment-protective and the good metallurgical performance of coke furnace cupola, realize resource rational utilization and comprehensive utilization.
Further specify the present invention below in conjunction with embodiment and accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of use state of the present invention.
The specific embodiment
Further set forth technical characterstic of the present invention below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, the present invention is a kind of grate formula natural gas cupola carbonaceous heat exchange bed, comprise shaft 9, the inner bottom part of shaft 9 is provided with molten bath 17, the top in molten bath 17 is provided with combustion chamber 5, be provided with burner 6 on the furnace wall of combustion chamber 5, the top of burner 6 is provided with natural gas distribution pipe 7, be provided with tapping hole 4 on the furnace wall of molten bath 17 and 5 junctions, combustion chamber, its shaft 9 interior middle parts are provided with water cooled grating 8 in the position on the lower, water cooled grating 8 tops are provided with heat exchange bed 12, and heat exchange bed 12 is the mixture of carbonaceous blocks and refractory ceramics ball; Offer some air outlets 10 on the furnace wall, top of described water cooled grating 8, middle and upper part air-supply, the carbon monoxide in the combustion-supporting furnace gas and other combustible components in the carbon bed.Air outlet 10 is connected with ajutage 15, and ajutage 15 connects bellows 11 and air blast; The top of described heat exchange bed 12 is provided with metal charge 13, is provided with some layer by layer Jiao 14 in the metal charge 13.Its air outlet 10 is 400mm with the vertical range of water cooled grating 8, and air outlet 10 annular on shaft 9 arranges, and the spacing of air outlet 10 is 300mm, and the air port ratio of air outlet 10 is 1.5%.The ratio that its carbonaceous blocks accounts for heat exchange bed 12 is 50%--100%.Be provided with air-valve 16 on its ajutage 15, the air output in the carbon bed can be regulated.The below of its shaft 9 is provided with chassis 2, and shaft 9 is connected with chassis 2 by combustion chamber elevating mechanism 3; Described chassis 2 is connected on the track 1 on the fixed bottom boundary.The height of its heat exchange bed 12 is 500-600mm, and the lumpiness of carbonaceous blocks is 60-100mm.Grate formula natural gas cupola heat exchange bed of the present invention is offered air outlet in the appropriate location of heat exchange bed, when main purpose is combustion-supporting combustion chamber furnace gas by heat exchange bed with the imflammable gas such as carbon monoxide of heat exchange bed carbonaceous material reaction generation, reduce the chemical heat loss, strengthen the heat exchange bed heat supply; The ratio that carbonaceous heat exchange material accounts for the heat exchange material can require according to the metallurgy of furnace charge to require to adjust with iron liquid treatment temperature, when adjusting the carbonaceous material ratio, needs corresponding adjustment air output.As the technical scheme operation of pressing embodiment, every batch of material amount of producing input is: metal charge 200kg/ criticizes, and coke charge 8kg/ criticizes, and lime stone 2kg/ criticizes, air quantity 8～10m
3/ min.
Grate formula natural gas cupola carbonaceous heat exchange bed of the present invention can not only be finished the carburetting of iron liquid, reduce the scaling loss of alloying element in the iron liquid, and can satisfy the melting requirement of different trade mark iron liquid; Test shows that the carbon bed has been brought into play the effect of bed coke, compares with common furnace cupola, and iron liquid consumption carbon 40kg per ton, consumption natural gas 60 M3 do not take under the condition of other metallurgical measure, and iron liquid tapping temperature reaches 1520 ℃, is stabilized in 1450 ℃～1500 ℃; Iron oxide content is less than 5% in the slag, and different according to furnace charge carbon amount and impurity, it is that 10%～15%, Mn burn out rate is 15%～20% that carbon increasing amount can reach 1.2%, Si burn out rate, near the better level of common furnace cupola.
More than show and described basic principle of the present invention and principal character and advantage thereof.The technology personage of the industry should understand; the present invention is not subjected to the restriction of above-mentioned implementing regulations; what describe in above-mentioned implementing regulations and the specification is to be used for illustrating principle of the present invention; under the prerequisite that does not break away from the principle of the invention and scope; the present invention also can have various changes and modifications, and these changes and improvements all belong in the claimed scope of the invention.
The claimed scope of the present invention defines with appending claims and other equivalent.
Claims (7)
1. a grate formula natural gas cupola carbonaceous heat exchange bed comprises shaft, and the middle part is provided with water cooled grating in the position on the lower in the shaft, it is characterized in that: described water cooled grating top is provided with heat exchange bed, and heat exchange bed is the mixture of carbonaceous blocks and refractory ceramics ball; Offer some air outlets on the furnace wall, top of described water cooled grating; The top of described heat exchange bed is provided with metal charge, is provided with some burnt layer by layer in the metal charge.
2. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 1, it is characterized in that: described air outlet is connected with ajutage, and ajutage connects bellows.
3. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 2, it is characterized in that: the vertical range of described air outlet and water cooled grating is 400mm, air outlet annular on shaft arranges, and the spacing of air outlet is 300mm, and the air port ratio of air outlet is 1.5%.
4. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 3, it is characterized in that: the ratio that described carbonaceous blocks accounts for heat exchange bed is 50%--100%.
5. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 4, it is characterized in that: the height of described heat exchange bed is 500-600mm, the lumpiness of carbonaceous blocks is 60-100mm.
6. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 5 is characterized in that: be provided with air-valve on the described ajutage.
7. grate formula natural gas cupola carbonaceous heat exchange bed according to claim 6, it is characterized in that: the below of described shaft is provided with chassis, and shaft is connected with chassis by the combustion chamber elevating mechanism; Described chassis is connected on the track on the fixed bottom boundary.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105332184A CN103017509A (en) | 2012-12-11 | 2012-12-11 | Furnace bar type natural gas cupola carbon heat exchange bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105332184A CN103017509A (en) | 2012-12-11 | 2012-12-11 | Furnace bar type natural gas cupola carbon heat exchange bed |
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| CN103017509A true CN103017509A (en) | 2013-04-03 |
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| CN2012105332184A Pending CN103017509A (en) | 2012-12-11 | 2012-12-11 | Furnace bar type natural gas cupola carbon heat exchange bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534861A (en) * | 2015-01-13 | 2015-04-22 | 李明弟 | Integral cellular fire-resistant hearth for fuel gas cupola furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107517A (en) * | 1987-04-30 | 1992-04-21 | Oy Partek Ab | Melting furnace |
| CN201514097U (en) * | 2009-10-15 | 2010-06-23 | 青岛青力环保设备有限公司 | Carbon bed natural gas cupola |
| EP2290110A1 (en) * | 2004-07-30 | 2011-03-02 | Posco | Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same |
| CN102047059A (en) * | 2008-05-30 | 2011-05-04 | 爱信高丘株式会社 | Gas cupola for melting metal |
| CN203203381U (en) * | 2012-12-11 | 2013-09-18 | 青岛青力环保设备有限公司 | Furnace bar type natural gas cupola carbon heat exchange bed |
-
2012
- 2012-12-11 CN CN2012105332184A patent/CN103017509A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107517A (en) * | 1987-04-30 | 1992-04-21 | Oy Partek Ab | Melting furnace |
| EP2290110A1 (en) * | 2004-07-30 | 2011-03-02 | Posco | Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same |
| CN102047059A (en) * | 2008-05-30 | 2011-05-04 | 爱信高丘株式会社 | Gas cupola for melting metal |
| CN201514097U (en) * | 2009-10-15 | 2010-06-23 | 青岛青力环保设备有限公司 | Carbon bed natural gas cupola |
| CN203203381U (en) * | 2012-12-11 | 2013-09-18 | 青岛青力环保设备有限公司 | Furnace bar type natural gas cupola carbon heat exchange bed |
Non-Patent Citations (1)
| Title |
|---|
| 刘瑞玲等: "无焦冲天炉的结构及特点", 《铸造》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534861A (en) * | 2015-01-13 | 2015-04-22 | 李明弟 | Integral cellular fire-resistant hearth for fuel gas cupola furnace |
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Application publication date: 20130403 |