CN102192654A - Waste heat boiler cooling and waste heat utilizing system for furnace lid of submerged arc furnace - Google Patents
Waste heat boiler cooling and waste heat utilizing system for furnace lid of submerged arc furnace Download PDFInfo
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- CN102192654A CN102192654A CN2010101185011A CN201010118501A CN102192654A CN 102192654 A CN102192654 A CN 102192654A CN 2010101185011 A CN2010101185011 A CN 2010101185011A CN 201010118501 A CN201010118501 A CN 201010118501A CN 102192654 A CN102192654 A CN 102192654A
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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
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Abstract
The invention relates to a waste heat boiler cooling and waste heat utilizing system for a furnace lid of a submerged arc furnace, mainly comprising a furnace lid heat-receiving surface, a connecting pipeline and a boiler cylinder. In the invention, the waste heat boiler cooling and waste heat utilizing system for the furnace lid of the submerged arc furnace is used for replacing the traditional high-water-consumption, high-energy-consumption and easy-over-burning submerged arc furnace lid and a cooling cycle system thereof, waste heat from the furnace lid and a flue system is sufficiently utilized for power generation or other industrial heat use purposes, finally the water consumption and the power consumption of the smelting system of the submerged arc furnace are reduced, and the environmental pollution is decreased. Great efforts, given to the application of the waste heat boiler cooling and waste heat utilizing system for the furnace lid of the submerged arc furnace in the field of submerged arc furnaces, in particular in silicon metal, ferrosilicon, silicon-aluminum alloy, calcium carbide, manganese-silicon alloy and NiTi alloy smelting fields, revolutionarily boost the energy-saving and emission-reduction technologies in the smelting industries of the submerged arc furnaces.
Description
Technical field
The present invention relates to produce the smelting furnace equipment of products such as metallic silicon, Antaciron, calcium carbide, silico-aluminum, especially a kind of ore deposit hot stove bell boiler plant.
Background technology
The hot stove bell in ore deposit is applied on the hot stove in all kinds of ore deposits of semitight or closed, and it mainly acts on and is: 1, collect poisonous, the dust-laden gas of high temperature that produces in the electric furnace smelting process, to improve working environment and energy-saving and emission-reduction; 2, the heat that reduces in the electric furnace scatters and disappears, with the protection working environment; 3, satisfying the mine heat furnace smelting electrode inserts, feeds in raw material, collects the discharge furnace gas, sees the structural requirement that fire is smash material; 4, the cooling of bell itself to prevent self scaling loss, is protected coupled miscellaneous equipment.But bell (cover) technology is very backward at present, service life is short, the energy consumption height, water consumption is big, ore-smelting electric furnace bell with a 21MVA is an example, its shape adopts simple water collar structure as the pot cover (family expenses cooking pot cover) of a porous, cover on the molten bath of the hot stove in ore deposit (surface temperature of molten pool is up to 2000 ℃), in order to prevent that bell from burning, in bell, feed 400～600 tons/hour cooling water, cooling back water temperature rises 10～15 ℃, recycling for water is provided at an outer portion with large pool, cooling tower, the water circulating pump system, simple water treatment system, water charging system.So a large amount of heat energy and water resource are lost in the atmosphere, and because water Cycle Difference, perishable, fouling burn out and make that the bell life-span short in the water collar, this system complex, maintenance cost height, energy consumption height, control level are low simultaneously, under the multiple pressures such as, water scarcity big in energy shortage, environmental pressure, the hot boiler face in the ore deposit of this highly energy-consuming high pollution faces the pressure of eliminating or improving upgrading.
Also there are the following problems for bell and cooling system problem in the hot stove industry in present ore deposit:
One, bell generally adopts the water collar structure, because of the needs of structure or cooling, generally bell is divided into some water-cooleds unit, complicated connecting line loop is arranged on the bell, and dispose simple water treatment system and huge circulating water cooling system.
Two, the water quality inferiority of cooling water and moisturizing, only simple filtration and softening processing (not having deoxygenation, desalination), secondary pollution easily in cooling tower and pond cyclic process, ash in the water and salt cause water collar fouling scaling loss easily, oxygen in the water makes water collar oxidation and electrochemical corrosion easily, finally cause the hot stove shutdown maintenance in ore deposit (the stove expense that opens, has a power failure is big, and the cycle is long).
Three, water collar is simple interlayer of steel plate, has many water circulations dead angle, and water flow inside is slow, lack of homogeneity, circulation are not smooth, causes that easily hot-spot, local scaling burn out; The jacket structured bearing capacity of dull and stereotyped fouling is poor.
Above-mentioned this cooling means, water quality, structures shape its cooling fluid in bell, must not seethe with excitement or temperature rise too high, 10～20 ℃ of general control temperature rises (the too high easy boiling of temperature rise or cause local boiling, to make the very fast fouling scaling loss of boiling section), so just need a large amount of cooling water (about 400～600 tphs of the electric furnace cooling water inflow of 20,000 KVA, need two big water circulating pumps), water after heating up simultaneously need be delivered in the cooling tower of open-air layout and cool off, so that recycling, the water consumption of visible this system, power consumption, occupation of land etc. are all bigger.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existence, provide a kind of environmental protection, efficient, energy-conservation ore deposit hot stove bell waste heat boiler to cool off and bootstrap system.
The objective of the invention is to finish by following technical solution, cooling of a kind of ore deposit hot stove bell waste heat boiler and bootstrap system, it comprises:
One afterheat boiler system includes bell heating surface, connecting pipe and drum and connects and composes;
One cooling system includes the bell cooling device that water and steam water interface cool off;
One bootstrap system includes the steam user;
Hot stove bell waste heat boiler cooling of described ore deposit and bootstrap system, described bell heating surface adopts fin panel casing group structure, it mainly by lid shape water-cooling wall, be arranged at cover the shape water-cooling wall go to the bottom two ends the allocation set case, be arranged on the inspection door and the bracing frame that cover shape water-cooling wall both sides, be arranged on to cover furnace gas interface, filler interface and the electrode interface on the shape water-cooling wall and be wrapped in the outer insulation cladding that covers shape water-cooling wall outside and form.
Described lid shape water-cooling wall, furnace gas interface, filler interface, electrode interface all adopt boiler tube to add band steel weldering system and form.
Described steam user can be the steamer electricity generation system.
The present invention replaces the hot stove bell in ore deposit and the cooling recirculation system thereof of present high water consumption, high energy consumption, easy scaling loss with cooling of ore deposit hot stove bell waste heat boiler and bootstrap system, the type of cooling (or medium) that bell adopts boiler feedwater or steam water interface to cool off, and the waste heat of bell and flue system fully utilized, be used for generating or other industrial heat, finally reduce water consumption, power consumption, the minimizing environmental pollution of mine heat furnace smelting system.Carry forward vigorously the application of ore deposit hot stove bell waste heat boiler cooling and bootstrap system hot stove industry (especially metallic silicon, Antaciron, silico-aluminum, calcium carbide, manganese-silicon, Nitinol smelting industry), advance the hot stove melting in ore deposit industry energy-saving emission-reduction technology revolutionaryly in the ore deposit.
Description of drawings
Fig. 1 is ore deposit of the present invention hot stove bell waste heat boiler cooling and bootstrap system schematic diagram;
Fig. 2 is an ore deposit of the present invention hot stove bell waste heat boiler structural representation;
Fig. 3 is a bell heated face structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done detailed introduction: as Figure 1-3: cooling of a kind of ore deposit hot stove bell waste heat boiler and bootstrap system, it comprises:
One afterheat boiler system includes bell heating surface A, connecting pipe C and drum B and connects and composes;
One cooling system includes the bell cooling device that water and steam water interface cool off;
One bootstrap system includes steam user D;
Described bell heating surface A is made of the fin panel casing group, through designing and manufacture the bell shape radiation heating-surface of ore deposit desired appearance and size of hot stove bell and interface condition, heated water of stream or steam in the pipe, bell lower tube outflow high temperature contains grey furnace gas, and absorb the molten bath radiant heat, it mainly contains following 5 effects:
1, the high-temperature physics heat of furnace gas side and the radiant heat in molten bath are passed to pipe interior water or steam, the heat energy or the potential energy that make interior water of pipe or steam have certain value efficiently.
2, Qi Gai (cover) shape structure can be collected the high temperature that produces in the smelting process and contained grey furnace gas.
3, can satisfy in the smelting process electrode insert, reinforced with the hole, observe with the hole, smash and expect to use the hole demand.
4, high-quality boiler feed water and good boiler water cycle system have improved the bell life-span.
5, the hot stove bell in ore deposit and the cooling water recirculation system thereof that replace present high water consumption, easy scaling loss.
Described drum B, it is used to collect and separates the steam water interface that bell heating surface A is produced, and the cooling bell heating surface A that the water of separating sent into and circulate, circulation is cooled off bell and is produced high-temperature steam D like this, steam is sent to steam user D, steam does work in steam user D after condenser is condensed into water, water pump is sent condensed water into drum once more, be used for circulation cooling bell, water cooling-heat absorption in this system like this-acting-condensation-cooling again, reciprocation cycle is utilized, and the water level in the drum B is kept certain altitude by the boiler feedwater adjusting device.
Described connecting pipe C is used to connect bell heating surface A and drum B, and main effect is to be responsible for the continuous cooling water among the drum B is sent among the bell heating surface A, and the steam water interface that produces among the bell heating surface A is sent among the drum B continuously.
Described bell heating surface A mainly by by lid shape water-cooling wall 2, be arranged at cover shape water-cooling wall 2 go to the bottom two ends allocation set case 1, be arranged on the inspection door 6 and the bracing frame 7 that cover shape water-cooling wall 2 both sides, be arranged on furnace gas interface 3, filler interface 4 and the electrode interface 5 that covers shape water-cooling wall 2 upper ends and be wrapped in the outer insulation cladding 8 that covers shape water-cooling wall 2 outsides and form, allocation set case 1 is responsible to be assigned to cooling water in this whole heating surface equably; Lid shape water-cooling wall 2 forms the airtight water cooled cover of the hot stove in whole ore deposit; Furnace gas interface 3 flexibly connects with peripheral flue for the high-temperature furnace gas that produces in the molten bath draws interface, and the absorbing and cooling temperature effect is arranged; Filler interface 4 is to add the interface of raw material to the molten bath; Electrode interface 5 inserts interface for electrodes in mine hot stove, and interior cover insulated enclosure body guarantees that electrode can constantly insert, and prevents from short circuit and reduce to leak; Inspection door 6 is the hot stove inspection in ore deposit, sees fire, smashes and expect to use the hole, is the door of an activity; Bracing frame 7 be distributed in the bell heating surface around, be responsible for to support, fixing whole bell heating surface; Outer insulation cladding 8 is made of the light thermal-insulating material, covers the outside of whole bell heating surface, plays insulation effect.
Described lid shape water-cooling wall 2, furnace gas interface 3, filler interface 4, electrode interface 5 all adopt boiler tube to add band steel weldering system and form, the width of its shape, band steel and the specification of boiler tube are all determined respectively through calculating according to the hot stove interface condition in ore deposit and heat load intensity, make them form an organic whole heating surface, the integral solder structure, and boiler circuit connects mutually.
Described steam user D can be the steamer electricity generation system.
Ore deposit hot stove bell waste heat boiler cooling and bootstrap system, the type of cooling (or medium) that bell adopts boiler feedwater or steam water interface to cool off.Design of ore deposit hot stove bell smelting process and waste heat boiler design are organically merged, not only can recovery waste heat, more can satisfy and optimize mine heat furnace smelting technology, cost such as water consumption, power consumption, maintenance expense that makes mine heat furnace smelting technology etc. declines to a great extent, reduced environmental pollution simultaneously, this special waste heat boiler will have been carried forward vigorously the development of the hot stove melting in ore deposit industry energy-saving emission-reduction technology.
Claims (4)
1. an ore deposit hot stove bell waste heat boiler cools off and bootstrap system, it is characterized in that it comprises:
One afterheat boiler system includes bell heating surface (A), connecting pipe (C) and drum (B) and connects and composes;
One cooling system includes the bell cooling device that water and steam water interface cool off;
One bootstrap system includes steam user (D).
2. ore deposit according to claim 1 hot stove bell waste heat boiler cooling and bootstrap system is characterized in that described bell heating surface (A) adopts fin panel casing group structure, and it is mainly by lid shape water-cooling wall (2); Be arranged at and cover the go to the bottom allocation set case (1) at two ends of shape water-cooling wall (2); Be arranged on the inspection door (6) and the bracing frame (7) that cover shape water-cooling wall (2) both sides; Be arranged on furnace gas interface (3), filler interface (4) and the electrode interface (5) that covers shape water-cooling wall (2) upper end and be wrapped in and cover outside outer insulation cladding (8) composition of shape water-cooling wall (2).
3. ore deposit according to claim 2 hot stove bell waste heat boiler cooling and bootstrap system is characterized in that described lid shape water-cooling wall (2), furnace gas interface (3), filler interface (4), electrode interface (5) all adopt boiler tube to add band steel weldering system and form.
4. ore deposit according to claim 1 hot stove bell waste heat boiler cooling and bootstrap system is characterized in that described steam user (D) can be the steamer electricity generation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101185011A CN102192654A (en) | 2010-03-04 | 2010-03-04 | Waste heat boiler cooling and waste heat utilizing system for furnace lid of submerged arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101185011A CN102192654A (en) | 2010-03-04 | 2010-03-04 | Waste heat boiler cooling and waste heat utilizing system for furnace lid of submerged arc furnace |
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| CN102192654A true CN102192654A (en) | 2011-09-21 |
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| CN2010101185011A Pending CN102192654A (en) | 2010-03-04 | 2010-03-04 | Waste heat boiler cooling and waste heat utilizing system for furnace lid of submerged arc furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564147A (en) * | 2012-02-29 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Combined recycling system for fume waste heat of furnace cover and flue of iron alloy electric furnace |
| CN105737621A (en) * | 2014-12-11 | 2016-07-06 | 宜兴市宇龙电炉成套设备有限公司 | System for accelerating cooling of calcium carbide and recycling waste heat of melted calcium carbide |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07109509A (en) * | 1993-10-08 | 1995-04-25 | Nippon Steel Corp | Method for controlling steam accumulator in converter boiler |
| JPH08283831A (en) * | 1995-04-10 | 1996-10-29 | Nippon Steel Corp | Apparatus for vacuum-refining molten metal |
| DE19925599A1 (en) * | 1999-06-04 | 2000-12-07 | Sms Demag Ag | Method and device for operating arc melting furnaces and / or resistance melting furnaces |
| CN2760484Y (en) * | 2004-08-30 | 2006-02-22 | 丁增佳 | Fining furnace water-cooled cover |
| CN201050944Y (en) * | 2007-05-30 | 2008-04-23 | 中冶京诚工程技术有限公司 | Electric furnace flue gas waste heat recovery device |
| CN101532781A (en) * | 2008-03-10 | 2009-09-16 | 谢西平 | Sealed submerged arc furnace system |
| CN201340195Y (en) * | 2008-10-06 | 2009-11-04 | 西安电炉研究所有限公司 | Dismountable pipe-type water-cooled furnace cover for submerged arc furnace |
| CN201697472U (en) * | 2010-03-04 | 2011-01-05 | 杭州杭锅工业锅炉有限公司 | Submerged-arc furnace cover afterheat boiler |
-
2010
- 2010-03-04 CN CN2010101185011A patent/CN102192654A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07109509A (en) * | 1993-10-08 | 1995-04-25 | Nippon Steel Corp | Method for controlling steam accumulator in converter boiler |
| JPH08283831A (en) * | 1995-04-10 | 1996-10-29 | Nippon Steel Corp | Apparatus for vacuum-refining molten metal |
| DE19925599A1 (en) * | 1999-06-04 | 2000-12-07 | Sms Demag Ag | Method and device for operating arc melting furnaces and / or resistance melting furnaces |
| CN2760484Y (en) * | 2004-08-30 | 2006-02-22 | 丁增佳 | Fining furnace water-cooled cover |
| CN201050944Y (en) * | 2007-05-30 | 2008-04-23 | 中冶京诚工程技术有限公司 | Electric furnace flue gas waste heat recovery device |
| CN101532781A (en) * | 2008-03-10 | 2009-09-16 | 谢西平 | Sealed submerged arc furnace system |
| CN201340195Y (en) * | 2008-10-06 | 2009-11-04 | 西安电炉研究所有限公司 | Dismountable pipe-type water-cooled furnace cover for submerged arc furnace |
| CN201697472U (en) * | 2010-03-04 | 2011-01-05 | 杭州杭锅工业锅炉有限公司 | Submerged-arc furnace cover afterheat boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564147A (en) * | 2012-02-29 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Combined recycling system for fume waste heat of furnace cover and flue of iron alloy electric furnace |
| CN105737621A (en) * | 2014-12-11 | 2016-07-06 | 宜兴市宇龙电炉成套设备有限公司 | System for accelerating cooling of calcium carbide and recycling waste heat of melted calcium carbide |
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Application publication date: 20110921 |