CN1779402A - Tailed heat recovery generator of mineral heat furnance - Google Patents
Tailed heat recovery generator of mineral heat furnance Download PDFInfo
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- CN1779402A CN1779402A CNA200410080223XA CN200410080223A CN1779402A CN 1779402 A CN1779402 A CN 1779402A CN A200410080223X A CNA200410080223X A CN A200410080223XA CN 200410080223 A CN200410080223 A CN 200410080223A CN 1779402 A CN1779402 A CN 1779402A
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- ore deposit
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- hot stove
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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
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Abstract
In the invention, the industrial power supply is fed to a double-power transformer through an input terminal a DC control reactor and then to an ore-smelting furnace after convection. The waste heat released during smelting is recovered by a heat recovery device. The external water supply and the condensation water of stem turbine is fed to the heat recovery device to heat through a circulating water-adding unit and then satuated vapor compensated by the thermal compensation boiler propels the turbounit to generate.
Description
The utility model relates to the electrothermal furnace aspect of ore smelting, especially the tailed heat recovery generator of mineral heat furnance of repaying power transformer, thermal compensation boiler, steam turbine generator, metallic conduit, cycling element, constituting according to heating pole shape graphite electrode, the hood-shaped convection type heat regenerator of metal cylinder, dual power supply complementation contactless and step-less adjustment voltage in the body of heater of being made up of the furnace lining and the vertical cylindrical metal shell of nonmetal heat-insulating material, the insertion body of heater.
The hot stove in ore deposit (claiming electrothermal furnace again) of materials such as present industrial known smelting calcium carbide, ferrosilicon, the major technique feature is: internal layer is made shirt in interior shirt-stove by nonmetal heat-insulating material, the hot stove in ore deposit that outer vertical barrel type furnace shell (body) with the crooked welding fabrication of metallic plate, bar shape graphite electrode, the power transformer that has a plurality of taps, water-cooled petticoat pipe, water pump, cooling tower constitute.Its objective is and realize like this: ore and other auxiliary ingredients are added immediately in the furnace shell, and three root graphite electrodes are embedded in the furnace charge, and three root graphite electrodes link to each other with the secondary side of power transformer by cabinet.After to the graphite electrode energising, be embedded in the high-temperature electric arc of formation bottom of the graphite electrode in the furnace charge, under the effect of high-temperature electric arc, constantly heat, furnace charge fusing, the product of bottom in the stove are separated out to mineral aggregate, this melt zone claims melting zone again, and its temperature is about 1450 ℃; Interlude in stove is a chemical reaction zone, and temperature is about 800 ℃-900 ℃; Top in the stove is preheating section, and its temperature is about 700 ℃; The furnace charge surface temperature of stove internal upper part is about 550 ℃-600 ℃.For the surrounding working environment temperature is reduced, exhaust gas dust can be concentrated discharging, and installation one has the water-cooled metal petticoat pipe of discharge orifice above the vertical cylindrical body of heater, has a chimney that exhaust gas dust is discharged above petticoat pipe.The water that constantly circulates in watercooled hood adds a large amount of heats and to be sent to cooling tower and to emit in atmosphere through water circulating pump.The problem of being deposited is: high energy consumption, poor efficiency.With the hot stove in 15MVA ore deposit is example, and the thermal loss that discharges by watercooled hood, chimney is equivalent to about 1/3rd of ore deposit hot stove electric power input capacity, i.e. 55MVA.
The tailed heat recovery generator of mineral heat furnance that provides of the present utility model, it can be by the hood-shaped convection type heat regenerator of metal cylinder (hereinafter to be referred as heat regenerator) with the heat that discharges in the stove to reclaim to greatest extent, water in the heat regenerator constantly is heated, water after the heating is delivered to the thermal compensation boiler through water circulating pump, compensate into suitable saturated vapor through the thermal compensation boiler again, promoted the steam turbine generator generating by the steam after the thermal compensation, again the electricity that sends is repaid power transformer by the dual power supply complementation and feed back to the hot stove in ore deposit, it is energy-conservation to the consumption one of industrial electrical network electric power to reduce the hot stove in ore deposit, improves the economic benefit of product.
In order to solve above-mentioned task, the scheme that the utility model adopted is: originally vertical barrel type furnace shell (body), bar shape graphite electrode keep constantly, remove cooling tower.The watercooled hood of the hot stove of raw ore is replaced by heat regenerator.The power transformer of former routine is repaid power transformer (hereinafter to be referred as the dual power supply transformer) by the dual power supply complementation and is replaced, thermal compensation boiler that newly increases and Turbo-generator Set generating.Purpose is achieved like this: import the dual power supply transformer by the three-phase electricity that industrial electrical network provides, the secondary side of this transformer outputs to electric energy on three root graphite electrodes that have now in the hot stove in vertical barrel type ore deposit by low-tension switch cabinet, and the process that all heating in stove, chemical reaction, metal thawing are separated out is identical with the hot stove in existing ore deposit.Institute's difference is: from furnace charge surface liberated heat, originally heat is discharged in the atmosphere with water-cooled petticoat pipe, water pump, cooling tower, now the fire door cover cap is lived by the heat regenerator that has gas discharge outlet, provide recirculated water by circulation moisturizing unit to heat regenerator, the water in heat regenerator is heated to greatest extent.For making the temperature fluctuation minimum, again the water after the heat regenerator heating is delivered to the thermal compensation boiler, promoted the Turbo-generator Set generating, deliver to the dual power supply transformer by the electricity that Turbo-generator Set is sent by the saturated vapor after the thermal compensation, feed back to the hot stove in ore deposit and utilize again, or be transported to other application scenario.
Above-mentioned heat regenerator, it is that the two large divisions forms: heat regenerator tube wall (abbreviating wall as), heat regenerator top cover (abbreviating lid as).The inboard of heat regenerator wall is by the wall-hanging watt of cylinder that shape metal header is combined into of 60 ° of six groups of angles, be subjected to " protruding, recessed " shape metal tube of staggered welding increase hot joining receipts area on the face at the hot joining of each metal header, when current flow to these metal tubes from watt shape metal header, be heated the back and flow out; The ring cover of heat regenerator is combined into by 60 ° of fans of six groups of angles endless metal header, and every group of fan endless metal header is made up of a plurality of endless belt shape metal headers, on the interior hot receiving plane of each endless belt shape metal header, the a plurality of increase hot joinings of welding that intersect are received " U " shape metal tube of area, and keep cross-over connection to be communicated with endless belt shape metal header.So that current can absorb more heat.
Above-mentioned dual power supply transformer, it is on the basis of the three-phase transformer that uses in present power supply network, increased a cover three-phase input winding again newly at the three-phase input side, made the dual power supply transformer of industrial electrical network power supply input and the shared transformer core of cogeneration power supply input.The three phase mains input winding that increases newly and the corresponding output of Turbo-generator Set link to each other.Three-phase alternating current reactance device in a DC current control of the end of incoming cables of three phase windings series connection, totally two DC currents are controlled three-phase alternating current reactance devices (to call the DC control reactor in the following text), and the DC control reactor is made of independently of one another three interchange windings, three direct current windings.Under the control of controlled dc source, electromagnetic induction complementation between the iron core of the magnetic saturation degree by changing the DC control core of reactor, the voltage drop that reactor exchanges winding, dual power supply transformer, winding, power supply are complementary automatically; Can obtain stable, contactless connection, the output of stepless adjustable operating voltage at three-phase output end.And variable dc source output voltage, size of current are again input voltage, the output voltage height according to the dual power supply transformer, regulate under the control of intelligent controller.The hot stove electricity consumption from the ore deposit so on the one hand, the electric energy that is equivalent to exhaust heat recovery power generation is given the hot stove in ore deposit by the dual power supply transformer feedback; On the other hand from the industrial power supply net, the electric energy that is equivalent to exhaust heat recovery power generation feeds back to electrical network by the iron core and the electromagnetic action between the electromagnetism winding of dual power supply transformer.
Certainly, the heat that reclaims by heat regenerator also can be used for heating, refrigeration; Steam turbine generator group electricity also can be used for other occasion.
Above-mentioned tailed heat recovery generator of mineral heat furnance, it can be transformed into electric energy with the heat that was released to originally in the atmosphere, under the control of dc controling ac reactor, the dual power supply transformer feeds back to the waste heat recovery electricity in the hot stove in ore deposit, can make input side, outlet side, realize contactless, stepless continuous regulation voltage.It is energy-conservation to the delivery one of the hot stove in ore deposit to reduce industrial electrical network, improves reliable, the security of producing.
Be described further below in conjunction with drawings and Examples.
Accompanying drawing 1: ore deposit hot stove exhaust heat recovery power generation frame principle figure.
Accompanying drawing 2: heat regenerator top cover minimum unit stereochemical structure schematic diagram.
Accompanying drawing 3: heat regenerator top cover minimum unit heat regenerator assembly vertical view.
Accompanying drawing 4: the hanging minimum unit location drawing of heat regenerator wall.
Accompanying drawing 5: the hanging minimum unit heat regenerator of heat regenerator wall schematic diagram.
Accompanying drawing 6: single-phase dual power supply transformer principle figure.
In the accompanying drawing 1, the three-phase alternating current that industrial electrical network provides inputs to dual power supply transformer (5) from input terminal (1) through DC control reactor (4), after the conversion of dual power supply transformer (5), give the hot stove in ore deposit (7) of existing three root graphite electrodes, allow mineral aggregate heat in the hot stove in ore deposit, chemical reaction generates product.The hot stove in ore deposit (7) liberated heat is reclaimed by heat regenerator (12).Supply water from the outside and water that steam turbine feedback condensed water is sent here through moisturizing cycling element (13), in heat regenerator (12), constantly be heated, water after being heated is given thermal compensation boiler (11) again, is sent into Turbo-generator Set (10) generating by the saturated high-temperature high-pressure steam after thermal compensation boiler (11) thermal compensation.The three-phase electricity that Turbo-generator Set (10) is sent is given dual power supply three-phase transformer (5) by input (8) through DC control reactor (9).The voltage monitoring point (6) of dual power supply three-phase transformer (5) output, voltage, Turbo-generator Set (10) the output voltage information that industrial electrical network inputs to dual power supply three-phase transformer (5) are given respectively and are driven testing circuit (3), by driving testing circuit (3) information is transferred to Based Intelligent Control (2), intelligent controller (2) is made corresponding output drive signal and is given driving testing circuit (3), reactor (4), (9) as requested, and adjusting industrial electrical network, Turbo-generator Set (10) input to the height of dual power supply transformer (5) voltage.Reach the purpose that reduces the mains supply amount.
In the accompanying drawing (2), constitute ring-band shape flute profile header by metallic plate (14), (17), (20), (22), (24).Middle with metallic plate (17) welding, be divided into two independent sectors.On the metallic plate (24) of the bottom of this header, in two parts of ring-band shape flute profile header, two ports such as " U " shape pipe (23), (25) are communicated with a lot of identical metal " U " shape pipes (23), (25) cross-over connection respectively with two parts of metal header.After water enters from an end of water inlet (18) and " U " shape pipe (23), (25), in pipe, be heated, discharge through the other end and the delivery port (19) of " U " shape pipe (23), (25).Being similar to a lot " U " shape pipe arrangement mode in (23), (25) intersects and carries out.Below the vertical view 3 with accompanying drawing (2) further specifies.
In the accompanying drawing (3), wherein one has " U " shape of two ports (26), (27) to manage, and it and adjacent in addition (28) that two ports are arranged, " U " shape pipe of (29) are cross arrangement, and the rest may be inferred by analogy for it.The recuperation of heat minimum unit (30), (31) that have " U " shape pipe ring band shape are respectively by different radii, and angle is that " the heat regenerator minimum unit constitutes one group of full sectors heat regenerator for 60 ° ring-band shape.Again such six identical fan-shaped heat regenerators are combined into circular heat and reclaim lid.Each minimum unit is similar can to link to each other with water inlet, water outlet metal house steward respectively with delivery port (19) with water inlet (18).
In the accompanying drawing 4, the furnace wall that adiabatic packing material (32) between metal shell cylindraceous (32) and the cylindric nonmetal heat-resisting interior shirt (35) constitutes has been fixed six heat regenerators (34) that size, angle are 60 ° of hanging minimum units of identical wall within it on the surface.
Accompanying drawing 6, power supply (46) one ends that provide by industrial electrical network directly and an end of the elementary winding (48) of transformer (5) link to each other, the other end is continuous through the AC coil (53) of DC control single phase ac reactance (4).Induced-current, voltage in the induction winding (49) of secondary side is transported in the hot stove in single-phase ore deposit (52) that has assembled graphite electrode.An output of waste heat recovery Turbo-generator Set (60) directly links to each other with the elementary winding (50) of dual power supply transformer (5), and the other end links to each other with elementary winding (50) by the AC coil (59) of DC control single phase ac reactance device (9).The dc coil (54) of the AC reactor of DC control (4), (9), (58) are subjected to the control of dc source (55), (57) respectively, when the size variation of the current strength in dc coil (54), (58), make that magnetic saturation intensity changes in the iron core of AC reactor (4), (9), near and change the voltage that exchanges winding (53), (59), (48), (49), (50).Testing circuit (47), (51), (56) information that the voltage in each loop is high and low send control module circuit (3) to, after the calculating of Based Intelligent Control (2), decision-making, export to DC control element circuit (55), (57) respectively, thereby regulate the dual power supply transformer input, output electric weight what, reach the purpose of waste heat recovering energy conserving.Three-phase alternating voltage, electric current are regulated therewith roughly the same.
Claims (3)
1, the hot stove waste heat power generation device in ore deposit is by the hot stove waste heat power generation device in ore deposit of the DC control three-phase alternating current reactance device (4) under intelligence control circuit unit (2) and detection, driving output circuit (3) driving, (9), dual power supply transformer (5), tube hood-shaped convection type heat regenerator (12), the hot stove in existing ore deposit (7), thermal compensation boiler (11), vapor wheel generating set (10), circulation moisturizing unit (13) formation.It is characterized in that: to DC control three-phase alternating current reactance device (4), (9) control, again dual power supply three-phase compensator transformer (5) is controlled by intelligence control circuit unit (2) and detection, drive circuit (3); Tube hood-shaped convection type heat regenerator (12) cover cap is lived the hot fire door in ore deposit.
2, the hot stove waste heat power generation device in ore deposit according to claim 1 is characterized in that: a plurality of minimum endless belt shape waste heat recovery unit (30), (31) that the metal header that is similar to " U " shape metal tube (23), (25) and metallic plate (14), (20), (21), (22), (24) welding of much being staggered constitutes.
3, the hot stove waste heat power generation device in ore deposit according to claim 1 is characterized in that: by AC coil (53), (59) respectively and corresponding DC control three-phase alternating current reactance device (4), (9) that constitute of dc coil (54), (58); AC coil (53), (59) are connected in the ac input circuit, and dc coil (54), (58) are connected in the dc power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410080223XA CN1779402A (en) | 2004-11-20 | 2004-11-20 | Tailed heat recovery generator of mineral heat furnance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410080223XA CN1779402A (en) | 2004-11-20 | 2004-11-20 | Tailed heat recovery generator of mineral heat furnance |
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| Publication Number | Publication Date |
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| CN1779402A true CN1779402A (en) | 2006-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200410080223XA Pending CN1779402A (en) | 2004-11-20 | 2004-11-20 | Tailed heat recovery generator of mineral heat furnance |
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| CN (1) | CN1779402A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121069A (en) * | 2010-12-28 | 2011-07-13 | 陕西盛华冶化有限公司 | Raw material of high purity silicon-calcium alloy and production equipment and production process thereof |
| CN104883001A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Heat inductance coke oven waste heat recovery power generating system based on boost power circuit |
| CN104930864A (en) * | 2015-06-03 | 2015-09-23 | 佟玉鹏 | Method for recycling secondary energy of direct-current submerged arc furnace |
-
2004
- 2004-11-20 CN CNA200410080223XA patent/CN1779402A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121069A (en) * | 2010-12-28 | 2011-07-13 | 陕西盛华冶化有限公司 | Raw material of high purity silicon-calcium alloy and production equipment and production process thereof |
| CN104883001A (en) * | 2015-05-15 | 2015-09-02 | 成都中冶节能环保工程有限公司 | Heat inductance coke oven waste heat recovery power generating system based on boost power circuit |
| CN104930864A (en) * | 2015-06-03 | 2015-09-23 | 佟玉鹏 | Method for recycling secondary energy of direct-current submerged arc furnace |
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