CN103842759B - There is the metallurgical technology device of efficient Waste Heat Reuse - Google Patents

There is the metallurgical technology device of efficient Waste Heat Reuse Download PDF

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Publication number
CN103842759B
CN103842759B CN201280013726.8A CN201280013726A CN103842759B CN 103842759 B CN103842759 B CN 103842759B CN 201280013726 A CN201280013726 A CN 201280013726A CN 103842759 B CN103842759 B CN 103842759B
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gas
combustion
combustion apparatus
operation method
generating unit
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CN201280013726.8A
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CN103842759A (en
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R.米尔纳
G.罗森菲尔纳
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/183—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines in combination with metallurgical converter installations
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/282—Increasing the gas reduction potential of recycled exhaust gases by separation of carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/62—Energy conversion other than by heat exchange, e.g. by use of exhaust gas in energy production
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • 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
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • 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
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • 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
    • Y02P10/20—Recycling
    • 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
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Details (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

A kind of metallurgical technology device has the device (7) being positioned at steel device (8) upstream processed in the preparation technology of steel and the gas generating unit (1) producing implication (2).It is contained in this work off one's feeling vent one's spleen carbon dioxide in (2) and/or water at least partly removal from this works off one's feeling vent one's spleen (3) in separation equipment (3).Consequent product gas (4) was heated by combustion gas (11) before feeding upstream device (7) in combustion apparatus (6).Feeding this combustion gas (11) with large volume to combustion apparatus (6), this volume is significantly greater than as adding hot product gas (4) required.Burn this combustion gas (11) time the heat energy that produces, as long as it is not used for heating this product gas (4), then utilized in the way of heat.This utilization can in combustion apparatus (6) air-flow of flue gas (12) by producing steam and realize and/or being formed during based on combustion gas, carry out in the downstream of combustion apparatus (6).In the later case, this utilization is carried out by preheated fuel gas (11) and/or the raw material (20,21) by the oxic gas (10) used by preheated burning combustion gas (11) and/or by preheating and/or dry this upstream device (7) and/or infeed gas generating unit (1).

Description

There is the metallurgical technology device of efficient Waste Heat Reuse
The present invention relates to a kind of operation method for metallurgical technology device, this device has position in the preparation technology of steel Device before steel device processed and the gas generating unit producing implication,
-wherein, it is contained in the carbon dioxide during this is worked off one's feeling vent one's spleen and/or water and at least partly works off one's feeling vent one's spleen from this in separation equipment Middle removal, and consequent working off one's feeling vent one's spleen heated by combustion gas feeding before upstream device in combustion apparatus,
-wherein, and feeding described combustion gas with large volume to combustion apparatus, this volume is required more than for adding hot product gas.
The invention still further relates to metallurgical technology device, it is so constituted, so that it implements this operation with continuously-running duty Method.
This kind of metallurgical technology device and affiliated operation method are known by US 5 846 268 A.
In metallurgical technology device, particularly in the device of ferrum processed and steel processed industry, need the heat energy under substantial amounts of high temperature. Therefore in this kind of device, produce a large amount of used heat.Produced used heat part is in order to heat generation in this metallurgical technology device Or the process gas of pending intermediate product-particularly.Described used heat also part the most in order to through produce steam equipment together with The turbine in downstream drives electromotor.
It is an object of the invention to, it is provided that the more efficient probability utilizing the metallurgical technology device starting described type.
This purpose is that the operation method of the feature by having claim 1 realizes.Having of the operation method of the present invention Profit embodiment is the theme of dependent claims 2-11.
There is provided according to the present invention, by the operation method of the metallurgical technology device of the following configuration described type of beginning:
-the heat energy that produces when fuel gas buring, as long as it is not used for heating this product gas, then will in this combustion apparatus Its heat utilization, the air-flow of the flue gas formed during for producing steam and/or based on combustion gas, use in this combustion apparatus downstream Described upstream device and/or the raw material of gas generating unit is fed in preheating and/or being dried.
In a preferred embodiment of the invention, the flue gas formed when combustion gas is initially used for producing steam also The most just it is used for adding hot product gas.
Needing in some cases, the temperature substantially constant of product gas is maintained at rated temperature.The most this situation, and should The temperature of flue gas is too high, then add the temperature of flue gas of hot product gas for regulation, can be after being used for producing steam and add hot product Before gas, cold air is mixed in flue gas.
A particularly preferred embodiment of the present invention provides,
-heating of product gas is limited in a medium temperature, described medium temperature is somebody's turn to do less than using in upstream device Reaction temperature needed for product gas, although create as this required heat energy when combustion gas, and
-by partial oxidation products gas, heated product gas is heated to reaction temperature from medium temperature.
If the heat energy of flue gas is sufficiently large, then the heat energy of flue gas can be utilized to carry out preheated fuel gas in the downstream of this combustion apparatus And/or the oxic gas of preheated burning combustion gas and/or heating conduction oil.
The exit gas that part is produced by gas generating unit can be used as combustion gas.Alternatively or additionally, it is possible to make It is used in the concentration produced when removing removing carbon dioxide and water from work off one's feeling vent one's spleen and has the Process Gas of carbon dioxide and water as combustion gas.If This described Process Gas is not enough to stable burning or without required heat energy, then can be mixed into a kind of other flammable in this Process Gas Gas maybe can be with other fuel gas one combust by this Process Gas.
Produced by the amount worked off one's feeling vent one's spleen and/or composition and the related to this amount also having produced Process Gas and/or group Become surging the most in time.Therefore, in the middle of work off one's feeling vent one's spleen part or the Process Gas that will use as combustion gas in many cases It is stored in that to be configured in the low pressure-air accumulator of combustion apparatus upstream be suitable.
In many cases, upstream device produces fuel gas when running.This fuel gas at least partly can be mixed into out In implication.Alternatively or additionally, this fuel gas can be used as combustion gas.In particular for time the combustible gas that can will finally mention Body be mixed into above-mentioned concentration have in the Process Gas of carbon dioxide and water or with this Process Gas one combust.
Additionally, also can produce the top gas of heat when upstream device is run.In the case, the heat energy being contained in top gas can be used Feed the product gas before combustion apparatus in preheating and/or be used for producing steam.I other words, the top gas of this heat can be combustible gas Body or non-combustible gas.
This upstream device can such as be designed to blast furnace, melting reduction device, melting unit or direct reduction unit.This gas Generating means can such as be designed to coal gasification apparatus or Metal Melting device, particularly molten iron device or melting reduction device.
Additionally, the metallurgical technology device that described purpose is the feature by having claim 12 realizes.By the present invention There is provided, the metallurgical technology device of the described type of so configured beginning, so that it implements the operation of the present invention with continuously-running duty Method.
Further advantage and details are by the description below of embodiment and combine accompanying drawing and be given.In schematic diagram:
Fig. 1 illustrates a kind of metallurgical technology device with schematic diagram,
Fig. 2 illustrates the fragment figure of the metallurgical technology device of Fig. 1 with schematic diagram, and
Fig. 3 illustrates the possible scheme of one of the metallurgical technology device of Fig. 1 with schematic diagram.
By Fig. 1, metallurgical technology device has gas generating unit 1.This gas generating unit 1 such as may be designed to coal gasification Device or Metal Melting device.In the case of being designed to Metal Melting device, it may be designed as molten iron device-be also especially Blast furnace, particularly oxygen blown converter-or be melting reduction device.Oxygen blown converter is a kind of blast furnace, wherein uses industry pure oxygen as heat Wind, and the blast furnace gas formed can return to this blast furnace.
This gas generating unit 1 operationally produces gas 2, hereinafter referred to as works off one's feeling vent one's spleen 2.This works off one's feeling vent one's spleen 2 containing combustible component And additionally carbonated, water and the most nitrogenous.The existence of nitrogen dioxide and water is in FIG by the additional mark in working off one's feeling vent one's spleen Note " CO2" and " H2O " represent.
Work off one's feeling vent one's spleen 2-wholly or in part-feed in separation equipment 3.Separation equipment 3 processes and works off one's feeling vent one's spleen 2-when needing Only process this section port gas 2 feeding separation equipment 3.This separation equipment 3 is particularly worked off one's feeling vent one's spleen 2 completely or portion from this Point remove and to be contained in the water that the carbon dioxide working off one's feeling vent one's spleen in 2 and/or be contained in is worked off one's feeling vent one's spleen in 2.Thus, on the one hand produce product gas 4, with Work off one's feeling vent one's spleen and 2 compare, dilution carbon dioxide and water in product gas 4.This is in FIG by additional marking " CO2-" and " H2O-" table Show.On the other hand produce Process Gas 5-be frequently referred to tail gas-, concentration wherein has carbon dioxide and/or water.This leads in FIG Cross additional marking " CO2+ " and " H2O+ " represent.
First this product gas 4 is fed combustion apparatus 6, and feeds upstream device 7 therefrom.This upstream device 7 is at steel Production technology in be arranged in the device of steel device 8 upstream processed.This upstream device 7 such as may be designed to blast furnace, melting and reducing dress Put, melting unit or direct reduction unit.
In combustion apparatus 6, this product gas 4 is made to heat in product gas-heat exchanger 9.At this moment this product gas 4 is kept Chemical composition-at least substantially-constant.The only temperature of product gas 4 is varied from.
When combustion apparatus 6 burns, use oxic gas 10 that combustion gas 11 is burnt into flue gas 12 in combustion apparatus 6.Gas 10, during 11 both of which feed combustion apparatus 6.Oxic gas 10 can be normal air especially.
Combustion gas 11 feeds in combustion apparatus 6 with large volume, and this volume is significantly greater than as adding hot product gas 4 required.Therefore, Substantial amounts of unnecessary heat energy is produced in combustion apparatus 6.Produced heat energy, if its be unnecessary-be i.e. not required to and be not used in Add hot product gas 4-, the most such as can in combustion apparatus 6 by means of vaporizer 13 be used for producing steam and for promote water- Steam-circulation.This steam such as can drive turbine 14, and this turbine drives electromotor 15 again.Or, this steam can also be used for Other side.
If generation steam, then the most clearly visible in vaporizer 13-Fig. 2-producing according to the gas flow arrangement of flue gas 12 Product gas-heat exchanger 9 upstream.Therefore, the flue gas 12 produced when combustion gas 11 is initially used for producing steam, and the most just uses In heating exit gas 4.
The steam superheating of generation optionally can be even made by means of flue gas 12.In the case, possible superheater is (in figure not Illustrate) according to the gas flow arrangement of flue gas 12 in product gas-heat exchanger 9 upstream, the most also in vaporizer 13 upstream.Additionally, can Preheat water to be evaporated.In the case, corresponding preheater (not shown) according to the gas flow arrangement of flue gas 12 at product Gas-heat exchanger 9 downstream.
Alternatively or in addition to being used for producing steam additionally, flue gas 12, these units can also be utilized in unit 16-19 Gas flow arrangement according to flue gas 12 is in combustion apparatus 6 downstream.
Such as can in gas-to-gas heat exchanger 16 preheated fuel gas 11.Alternatively or in addition to preheated fuel gas 11 additionally, can Oxic gas 10 is preheated in oxic gas-heat exchanger 17.The preheating of combustion gas 11 and/or oxic gas 10 is certainly by described gas 10, carry out before 11 infeed combustion apparatus 6.
In addition can-alternatively or in addition to preheated fuel gas 11 and/or oxic gas 10 additionally-in raw material processing device It is dried in 18 and/or preheats and will feed the raw material 20 in upstream device 7.Additionally or alternatively, in a similar manner can be at another Raw material processing device 19 is dried and/or preheats and will feed the raw material 21 in gas generating unit.Can examine especially as raw material 21 Consider iron ore or coke.
If the unnecessary heat energy of flue gas 12 is available in addition, the most additionally can hand in oil heat in this combustion apparatus 6 downstream Parallel operation 23 utilizes the energy heats conduction oil 24 of flue gas 12.
In some cases, the temperature of the flue gas 12 that regulation adds hot product gas 4 is probably applicable.For this purpose it is proposed, can press Fig. 2 is mixed into cold air 25 in flue gas 12.In the case, after utilizing flue gas 12 to produce steam, but-certainly- It is mixed into cold air 25 before adding hot product gas 4.
Can add hot product gas 4 in burner 6 until reaction temperature T (usually above 800 DEG C), this product gas 4 is required There is this temperature, can use in upstream device 7.But in many cases, the heating of product gas 4 is restricted to less than anti- Answer medium temperature T of temperature T ' in profit.Although producing when combustion gas 11 this (heating is until reaction temperature T) institute The heat energy needed, but this is also applicable.This medium temperature T ' such as can be about 400 DEG C-about 600 DEG C.If fruit product gas 4 is in combustion Burning equipment 6 heats and the highest only arrives medium temperature T ', then press Fig. 2, product gas 4 heated in combustion apparatus 6 passes through product The gas 4 partial oxidation in oxidation furnaces 26 is from medium temperature T ' it is heated to reaction temperature T.For this purpose it is proposed, generally except product gas 4 Outside additionally in oxidation furnaces 26 feed oxic gas 27, such as commercially pure oxygen (oxygen content at least 90%).
Can arbitrarily select the combustion gas 11 of burning in combustion apparatus 6 in principle.Combustion gas 11 can feed metallurgical technology from outside In device.Or, combustion gas 11 can be the gas produced in metallurgical technology device.According to Fig. 3, such as, can use by gas Generating means 1 produce work off one's feeling vent one's spleen 2 a part as combustion gas 11.Alternatively or additionally, it is possible to utilize Process Gas 5 as combustion Gas 11.As long as needing, other fuel gas 28 can be mixed in Process Gas 5.Or of course, as long as needing, make described other Fuel gas 28 in the single burner of combustion apparatus 6 with Process Gas 5 one combust.
If use work off one's feeling vent one's spleen 2 a part or Process Gas 5 as combustion gas 11, the most preferably leading to this combustion apparatus 6 The input channel of corresponding gas 2,5 arranges low pressure-air accumulator 29.This low pressure-air accumulator 29 is producing implication 2 for compensating And/or the fluctuation of amount that occurs during Process Gas 5 and/or the fluctuation of composition.There is air pressure P in low pressure-air accumulator 29, it is bigger In atmospheric pressure.
In many cases, heat and/or flammable gas 30 is produced when upstream device 7 is run.This gas 30 often claims For top gas 30.If this top gas 30 is flammable, then can by this top gas 30-completely or partially-be mixed into and work off one's feeling vent one's spleen in 2.Replace For ground or additionally top gas 30 can be used as combustion gas 11.Optionally can with work off one's feeling vent one's spleen 2 and/or Process Gas 5 be used together.In this situation Under, top gas 30 especially can be as that fuel gas 28, and it can be mixed in Process Gas 5 or therewith burn.
If this top gas 30 is hot, then can be used for feeding burner 6 at product gas 4 by heat energy contained in this top gas 30 Preheat this product gas 4 and/or for producing steam (include when needing overheated) before.This is represented by dashed line in figure 3.
The present invention has many advantages.Particularly can the most efficiently utilize in metallurgical technology device The heat energy produced and the flammable gas of generation.
Description above is used merely to explain the present invention.On the contrary, protection scope of the present invention is only true by appended claim Fixed.
Reference table:
1 gas generating unit
2 work off one's feeling vent one's spleen
3 separation equipments
4 product gas
5 Process Gas
6 combustion apparatus
7 upstream device
8 steel devices processed
9 product gas-heat exchanger
10,27 oxic gas
11 combustion gas
12 flue gases
13 vaporizers
14 turbines
15 electromotors
16-19 unit
16 combustion gas-heat exchanger
17 oxic gas-heat exchanger
18,19 raw material processing device
20,21 raw materials
23 oil heat exchangers
24 conduction oils
25 cold airs
26 oxidation furnaces
28 other incendivity gas
29 low pressure-air accumulator
30 top gas
P air pressure
T reaction temperature
T ' medium temperature

Claims (18)

1., for the operation method of metallurgical technology device, this device has and is positioned in the preparation technology of steel on steel device (8) processed The device (7) swum and the gas generating unit (1) producing implication (2),
-wherein, in separation equipment (3), work off one's feeling vent one's spleen the carbon dioxide in (2) and/or water at least partly goes out from this by being contained in this Implication (2) is removed, and makes consequent product gas (4) before feeding upstream device (7) in combustion apparatus (6) Heated by combustion gas (11),
-wherein, and feeding combustion gas (11) with large volume to combustion apparatus (6), this volume is required more than for adding hot product gas (4),
-wherein, the heat energy produced when combustion gas (11) is burnt, as long as it is not used for heating this product gas (4), then at combustion apparatus (6) by its heat utilization in, it is used for producing steam and/or based on the air-flow of produced flue gas (12) time combustion gas (11), This combustion apparatus (6) downstream is for preheating and/or is dried and feeds described upstream device (7) and/or gas generating unit (1) former Material (20,21).
Operation method the most according to claim 1, it is characterised in that the flue gas (12) produced when combustion gas (11) is first used In producing steam, and the most just it is used for adding hot product gas (4).
Operation method the most according to claim 2, it is characterised in that add the temperature of the flue gas (12) of hot product gas (4) for regulation, After being used for producing steam and before adding hot product gas (4), cold air (25) is mixed in flue gas (12).
4. according to the operation method of claim 1,2 or 3, it is characterised in that
-heating of product gas (4) is limited in a medium temperature (T '), and described medium temperature (T ') less than in upstream device (7) reaction temperature (T) needed for this product gas (4) is used in, although creating as this required heat when combustion gas (11) Can, and
-by partial oxidation products gas (4), heated product gas (4) is heated to reaction temperature from medium temperature (T ') (T)。
5. according to the operation method of claim 1,2 or 3, it is characterised in that utilize flue gas in the downstream of this combustion apparatus (6) (12) heat energy is used for preheated fuel gas (11) and/or the oxic gas (10) being used for preheated burning combustion gas (11) and/or is used for adding Thermal conductance deep fat (24).
6. according to the operation method of claim 1,2 or 3, it is characterised in that use the outlet produced by gas generating unit (1) The part of gas (2) and/or the concentration produced when being removed removing carbon dioxide and water by work off one's feeling vent one's spleen (2) have the mistake of carbon dioxide and water Journey gas (5) is optionally mixed into other fuel gas (28) or together with other fuel gas (28) described as combustion gas-the latter Burning.
Operation method the most according to claim 6, it is characterised in that the described part used as combustion gas (11) is worked off one's feeling vent one's spleen Or Process Gas (5) intermediate storage is in the low pressure-air accumulator (29) being configured at combustion apparatus (6) upstream (2).
8. according to the operation method of claim 1,2 or 3, it is characterised in that produce flammable top when upstream device (7) is run Gas (30), and described flammable top gas (30) is at least partly mixed in work off one's feeling vent one's spleen (2) and/or is used as combustion gas (11).
9. according to the operation method of claim 1,2 or 3, it is characterised in that produce the top gas of heat when upstream device (7) is run , and the heat energy that is contained in described top gas (30) is used for preheating and feeds the product gas (4) before combustion apparatus (6) and/or use (30) In producing steam.
10. according to the operation method of claim 1,2 or 3, it is characterised in that described upstream device (7) is designed to blast furnace, melts Melt reduction apparatus, melting unit or direct reduction unit.
11. according to the operation method of claim 1,2 or 3, it is characterised in that described gas generating unit (1) is designed coal-forming Gasification installation or Metal Melting device or melting reduction device.
12. according to the operation method of claim 1,2 or 3, it is characterised in that described gas generating unit (1) is designed to molten Ferrum device.
13. metallurgical technology devices, it is so designed that, so that it is implemented according to one of claim 1-12 with continuously-running duty Operation method, comprising:
-steel device (8) processed,
The upstream device (7) of-steel device (8) processed,
-produce the gas generating unit (1) of implication (2),
-separation equipment (3), at least partly removing carbon dioxide contained in work off one's feeling vent one's spleen (2) and/or water, produces product gas (4),
-combustion apparatus (6), its have by product gas (4) from separation equipment (3) feed combustion apparatus (6) pipeline and be passed through Feeding upstream device (7) from combustion apparatus (6) for the product gas that will heat in combustion apparatus (6) of trip device (7) Pipeline,
-for combustion gas (11) being fed the pipeline of combustion apparatus (6),
-for oxic gas (10) being fed the pipeline of combustion apparatus (6),
Wherein, there is at least one following equipment:
-be arranged in combustion apparatus (6) internal for produce steam vaporizer (13) and
-according to combustion gas (11) time the air-flow of flue gas (12) that formed, be arranged in being used for of this combustion apparatus (6) downstream Preheating and/or the raw material processing device (18,19) of dry raw material (20,21), this raw material processing device upstream device (7) And/or gas generating unit (1) feed.
14. metallurgical technology devices according to claim 13, it is characterised in that there is the pipe fed by cold air in flue gas (12) Road.
15. the metallurgical technology device according to one of claim 13 or 14, it is characterised in that exist and work off one's feeling vent one's spleen for intermediate storage (2) or the low pressure-air accumulator (29) of Process Gas (5), wherein, described low pressure-air accumulator (29) is configured at the upper of combustion apparatus (6) Trip.
16. according to the metallurgical technology device of one of claim 13 or 14, it is characterised in that described upstream device (7) be blast furnace, Melting reduction device, melting unit or direct reduction unit.
17. the metallurgical technology device according to one of claim 13 or 14, it is characterised in that described gas generating unit (1) is Coal gasification apparatus, Metal Melting device or melting reduction device.
18. according to the metallurgical technology device of one of claim 13 or 14, it is characterised in that described gas generating unit (1) is Molten iron device.
CN201280013726.8A 2011-03-17 2012-03-08 There is the metallurgical technology device of efficient Waste Heat Reuse Expired - Fee Related CN103842759B (en)

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AT511243B1 (en) 2013-01-15
KR20140019389A (en) 2014-02-14
ZA201306954B (en) 2014-08-27
BR112013023472A2 (en) 2016-12-06
AU2012228448A1 (en) 2013-10-03
US20140000535A1 (en) 2014-01-02
CA2830210A1 (en) 2012-09-20
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WO2012123320A1 (en) 2012-09-20
RU2610999C2 (en) 2017-02-17

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