CN102758037A - Joint production system of crude fuel hot charging and total heat oxygen blast furnace and vertical furnace - Google Patents

Joint production system of crude fuel hot charging and total heat oxygen blast furnace and vertical furnace Download PDF

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CN102758037A
CN102758037A CN 201210266608 CN201210266608A CN102758037A CN 102758037 A CN102758037 A CN 102758037A CN 201210266608 CN201210266608 CN 201210266608 CN 201210266608 A CN201210266608 A CN 201210266608A CN 102758037 A CN102758037 A CN 102758037A
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gas
furnace
port
blast
mixed
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CN 201210266608
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Chinese (zh)
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刘行波
周强
唐恩
喻道明
李菊艳
王小伟
范小刚
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中冶南方工程技术有限公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/10Reduction of greenhouse gas [GHG] emissions
    • Y02P10/12CO2
    • Y02P10/122CO2 by capturing CO2

Abstract

The invention relates to a joint production system of a crude fuel hot charging and total heat oxygen blast furnace and a vertical furnace, and is characterized in that a blast furnace gas outlet at the furnace top of a blast furnace is communicated with a blast furnace gas input port of a heat exchanger through a first blast furnace gas pipe, and a blast furnace gas outlet port of the heat exchanger is communicated with an input port of a CO2 removal device through a second blast furnace gas pipe; a first output port of the CO2 removal device is communicated with a second input port of a mixed pressurizer through a first CO gas pipe, and an output port of a water gas conversion device is communicated with a first input port of the mixed pressurizer through a hydrogen pipe; an output port of the mixed pressurizer is communicated with a mixed gas input port of a heater through a first mixed gas pipe, and a mixed gas output port of the heater is communicated with a mixed gas input port of a gas-based vertical furnace through a second mixed gas pipe. According to the system, a large amount of blast furnace gas is reasonably utilized, and energy is saved and emission is reduced.

Description

原燃料热装、全热氧高炉与竖炉联合生产系统 Hot charging raw fuel, the oxygen blast total heat production system combined with the shaft furnace

技术领域 FIELD

[0001] 本发明涉及ー种原燃料热装、全热氧气高炉与竖炉联合生产系统。 [0001] The present invention relates to a kind of raw fuel ー hot charging, oxygen blast total heat production system combined with the shaft furnace.

背景技术 Background technique

[0002] 目前世界生铁产量的90%以上由传统高炉炼铁エ艺生产,传统高炉炼铁エ艺通过热风炉向高炉鼓入温度在1000-1300°C的热风,鼓风富氧率在10%以下,热风与风ロ回旋区内的焦炭和喷吹的煤粉燃烧,产生煤气向上运动,与下行的矿石进行复杂的热量交换和还原反应,得到生铁。 [0002] more than 90% of the world production of pig iron produced by the conventional arts Ester blast furnace, blast furnace Ester conventional arts blast into the drum through a hot air oven to a temperature of 1000-1300 ° C in hot air, oxygen-enriched air blowing rate of 10 % or less, and hot wind blowing ro coke and coal combustion zone swirling, gas generating upward movement, the complex heat exchange and downlink ore reduction reaction, to give iron. 焦比通常为300-400Kg/tHM,喷煤比约100-200Kg/tHM。 Coke generally 300-400Kg / tHM, PCI ratio of about 100-200Kg / tHM. 焦炭的生产需要优质的炼焦煤,且焦炭的生产本身也是ー个高能耗,高CO2排放放量的生产过程,加之目前全球焦煤资源匮乏,焦炭和高炉炼铁的高能耗和高CO2排放量在当今全球节能减排的大环境下成为制约高炉发展的重要因素。 Coke production requires high-quality coking coal and coke production itself ー high energy consumption, high CO2 emission volume of the production process, coupled with the current global coking coal resources are scarce, and blast furnace coke of high energy consumption and high CO2 emissions today become an important factor restricting the development of blast furnace global energy saving environment.

[0003] 氧气高炉是ー种采用超高富氧鼓风(富氧率>40%)或全氧鼓风的一种冶炼方式。 [0003] Oxygen Species ー use a blast furnace smelting blast enriched ultra embodiment (oxygen enrichment of> 40%) or all of the oxygen blowing. 由于采用全氧鼓风,加快了喷吹煤粉的燃烧速度,煤粉燃烧充分,同时为了維持适宜的理论燃烧温度还需要増加煤粉喷吹量,在保持高置換比的情况下,全热氧鼓风冶炼可将喷煤率提高到300Kg/tHM以上,使高炉焦比大大降低,喷煤量显著提高,成为高炉冶炼的主要能源,改变了高炉炼铁的能源结构。 As a result of the total oxygen blowing, accelerate the speed of injection of pulverized coal combustion, coal combustion, and in order to maintain proper theoretical combustion temperature needs to increase in the amount of pulverized coal injection, while maintaining a high displacement ratio, the total heat blowing oxygen smelting of pulverized coal can be increased to 300Kg / tHM above, blast furnace coke is greatly reduced, significantly increased the amount of pulverized coal as the main energy of the blast furnace, blast furnace change energy structure. 然而制约全氧高炉发展的关键问题在于高炉全氧燃烧,炉腹煤气量少,炉身热量不足,炉料预还原性差,因此很多学者研究了炉顶煤气循环利用的问题,炉顶煤气经脱除CO2后从炉身部位循环喷入高炉炉内。 However, the key problem restricting the development of the whole oxygen furnace blast that oxy-fuel, both gas less, lack of body heat furnace, pre-reduced charge poor, many scholars have studied the problem of top gas recycling, top gas after removal after the CO2 cycle from the furnace body parts is injected into the blast furnace. 循环利用高炉煤气需将其加热到一定温度,否则大量冷煤气吹人氧气高炉,破坏了炉内的热平衡,能耗反而升高。 Recycling blast furnace gas need to be heated to a certain temperature, or a large number of cold gas bubbled oxygen furnace, the heat balance of the furnace damage, but increased energy. 高炉热风加热技术已经很成熟,但煤气加热要比热风加热困难得多。 Blast furnace hot air heating technology has been very mature, but gas heating than hot air heating is much more difficult. 一方面由于氧气高炉循环煤气中CO含量远远高于H2,所以煤气加热过程中CO会析碳,不但降低了有效煤气量,而且会影响煤气加热效率;另ー方面煤气加热存在安全隐患,加热过程中容易发生爆炸和煤气泄漏等事故。 Oxygen gas partly since CO content in the furnace cycle is much higher than H2, so the gas will be heated during the CO carbon analysis, not only reduces the effective amount of gas, but will affect the gas heating efficiency; ー another aspect unsafe gas heating, heating process prone to explosion and gas leak and other accidents. Midrex和HYL的煤气加热技术比较成熟,但主要加热富氢气体,基本没有析碳的问题。 HYL Midrex and gas heating technology is relatively mature, but mainly the hydrogen rich gas is heated, substantially no problem of carbon analysis.

发明内容 SUMMARY

[0004] 本发明所要解决的问题是:针对现有技术提出ー种原燃料热装、全热氧高炉与竖炉联合生产系统,该系统可使得大量高炉煤气得到了合理的利用,节能、减排。 [0004] The present invention aims to solve is: Presented ー kinds of raw fuel heat means for the prior art, the total heat oxygen furnace and the vertical furnace is the production system, the system may be such that a large number of blast furnace gas obtained a rational use of energy-saving, reduction row.

[0005] 本发明解决上述技术问题采用的技术方案是:原燃料热装、全热氧高炉与竖炉联合生产系统,它包括高炉和气基竖炉;其特征在于高炉的炉顶的高炉煤气出口由第一高炉煤气管与换热器的高炉煤气输入口相连通,换热器的空气输出ロ由助燃空气管与加热器的助燃空气输入口相连通,换热器的高炉煤气输出口由第二高炉煤气管与脱除CO2设备的输入口相连通;脱除CO2设备的第一输出ロ由第一CO气管与混合加压器的第二输入口相连通,脱除CO2设备的第二输出ロ由第二CO气管与水煤气变换设备的输入口相连通,水煤气变换设备的输出ロ由氢气管与混合加压器的第一输入口相连通;混合加压器的输出ロ由第一混合气管与加热器的混合气体输入口相连通,加热器的混合气体输出ロ由第二混合气管与气基竖炉的混合气体输入口相连通。 [0005] Solution to the technical problem of the present invention is employed: heat the raw fuel loading, total heat blast oxygen production system with a joint shaft furnace, comprising a blast furnace gas based shaft; wherein the top of the blast furnace gas outlet of the furnace communicating from the first blast furnace gas pipe blast furnace gas and the heat exchanger inlet, the air outlet ro combustion air by a heat exchanger tube and the heater combustion air inlet in communication, blast furnace gas outlet from the first heat exchanger two CO2 removal tube and the blast furnace gas inlet communicating device; a first output ro CO2 removal from the first device communicating the second inlet duct CO mixed pressurizer, a second CO2 removal device output CO ro communicated by the second input port and the water gas shift trachea device, ro water gas shift output device coupled to the first input port and the hydrogen mixing tube through the pressurizer; ro output is mixed by the first mixing pressurized pipe with the mixed gas through the inlet of the heater is connected, the output of the heater ro mixed gas from a mixed gas inlet connected to the second gas line with a gas-based shaft furnace through.

[0006] 加热器上设有燃料输入ロ。 A fuel input ro the [0006] heater.

[0007] 原燃料热装、全热氧高炉与竖炉联合生产エ艺,高炉炉料热装{烧结矿、球团矿、焦炭的装入温度为600-800°C装入高炉,这里所指的热装主要想强调装入高炉的炉料是高温的},采用全热氧燃烧(全热氧表示助燃气体全部采用加热后的氧气),热氧温度> 6500C,炉顶煤气主要为C0、H2、C02和H2O,高炉的炉顶煤气(或称高炉煤气)经换热并脱除CO2后经过水煤气变换(C0+H20=C02+H2)产生H2,按H2/C0的体积比=1-2 :1的比例混合部分脱除CO2的高炉煤气,加压到0. 5-0. 7MPa后加热到800-900°C,供气基竖炉生产海绵铁。 [0007] The hot raw fuel loading, and total heat oxygen blast joint production Ester Arts shaft furnace, blast furnace hot charging {sinter temperature loaded pellets, coke furnace is charged with 600-800 ° C, referred to herein thermal loading of the main charge would like to emphasize the blast furnace is charged with a high temperature}, all-oxygen combustion heat (thermal oxidation showing the whole all using oxygen combustion supporting gas after heating), the temperature of hot oxygen> 6500C, top gas mainly C0, H2 , C02 and H2O, blast furnace top gas (or blast furnace gas) by heat and CO2 removal after the water gas shift (C0 + H20 = C02 + H2) to produce H2, by volume H2 / C0 ratio = 1-2 : 1 ratio of the blast furnace gas part CO2 removal, 0. 5-0 7MPa pressure after heating to 800-900 ° C, the air supply shaft furnace for producing sponge iron group.

[0008]所述热氧温度为 650°C— 1300°C (最佳为650°C— 850°C)。 [0008] The hot oxygen temperature is 650 ° C- 1300 ° C (most preferably 650 ° C- 850 ° C).

[0009] 本发明的原理是:高炉全氧鼓风,炉腹煤气量少,炉身热量不足,炉料预还原性差,成为制约全氧高炉发展的关键问题,采用炉顶煤气脱除CO2后从炉身部位循环喷入高炉的技术在思路上可行,但是循环利用高炉煤气需将其加热到一定温度,否则大量冷煤气吹人氧气高炉,破坏了炉内的热平衡,能耗反而升高。 [0009] the principles of the present invention is: a full oxygen blast furnace, bosh less gas, less than furnace body heat, reducing the difference between the pre-charge, a key issue of restricting oxygen blast furnace development, using top gas after CO2 removal from furnace shaft portion into the blast furnace circulation jet technique in approach feasible, but the blast furnace gas recycling needs to be heated to a certain temperature, or a large number of cold gas bubbled oxygen furnace, the heat balance of the furnace damage, but increased energy. 而加热富含CO的纯氧高炉煤气会导致加热过程中析碳,降低有效煤气量,且煤气加热存在安全隐患,因此本发明提出采用高炉炉料热装技术解决全氧高炉炉腹煤气量少带来的炉身热量不足和炉料预还原性差的问题。 CO-rich heated oxygen leads to the blast furnace gas analysis of carbon during heating, reducing the effective amount of gas, gas heating and security risk, the present invention therefore proposes using hot blast furnace technology to solve the oxygen blast furnace means bosh gas with less lack of pre-charge and reducing the problem of poor to the furnace body heat. 高炉采用全氧鼓风,加快了喷吹煤粉的燃烧速度,煤粉燃烧充分,同时为了維持适宜的理论燃烧温度还需要増加煤粉喷吹量,在保持高置換比的情况下,全热氧鼓风冶炼可将喷煤率提高到300Kg/tHM以上,使高炉焦比大大降低,喷煤量显著提高,成为高炉冶炼的主要能源,改变高炉炼铁的能源结构。 BF total oxygen blast, to accelerate the speed of injection of pulverized coal combustion, coal combustion, and in order to maintain proper theoretical combustion temperature needs to increase in the amount of pulverized coal injection, while maintaining a high displacement ratio, the total heat blowing oxygen smelting of pulverized coal can be increased to 300Kg / tHM above, blast furnace coke is greatly reduced, significantly increased the amount of pulverized coal as the main energy of the blast furnace, blast furnace change energy structure. 采用全热氧鼓风后炉内煤气主要由CO和H2组成,炉内煤气无N2,还原性气体浓度由普通高炉的40%左右提高到接近100%,炉身的还原条件与还原竖炉相似,铁矿石的间接还原度大幅度提闻,闻温区广生的CO2量减小,焦炭的溶损减少,使闻炉有可能采用反应性高的焦炭或型焦。 With full blast furnace hot oxygen gas composed mainly of CO and H2, no furnace gas N2, the concentration of the reducing gas is increased from about 40% of normal blast furnace to close to 100%, and the furnace body reducing conditions similar to the reduction shaft furnace , indirect reduction of the iron ore substantially mention smell, CO2 amount Kwong Sang smell temperature region decreases, the solution loss of coke to reduce the smell of the furnace is possible to employ high reactivity of coke or coke. 采用全氧燃烧,炉顶煤气主要是CO,H2, CO2和H2O,不含氮气,经换热并脱除CO2后,可用作优质的还原气。 All-oxygen combustion, top gas mainly CO, H2, CO2 and H2O, nitrogen-free, dried and heat after CO2 removal, it can be used as high-quality reducing gas. 部分经脱除CO2的煤气经过水煤气变换,生成H2,供竖炉还原生产海绵鉄。 Part by the removal of CO2 gas through the water gas shift to produce H2, shaft furnace for reducing the production of sponge CITIZEN. H2还原氧化铁的速度是CO的6-10倍,增加还原煤气中H2的比例有利于还原,但CO还原铁矿石是放热反应,H2还原铁矿石是吸热反应,过多的H2还原会事炉料温度降低而阻碍还原,因此将脱除CO2的高炉煤气与经水煤气变换生成的H2,按比列混合加压到0. 6-0. 7MPa,加热到800-900°C后送入还原竖炉生产海绵铁。 H2 reduction of iron oxide is 6-10 times the rate of CO, H2 gas in the reduction ratio increases in favor of the reduction, reduced iron ore but CO is an exothermic reaction, H2 reduction of iron ore is an endothermic reaction, excess H2 reducing the temperature decreases things will hinder charge reduction, so the removal of the blast furnace gas to generate CO2 in the water-gas shift H2, according to the mixing ratio of the column is pressurized to 0. 6-0. 7MPa, evacuation was heated to 800-900 ° C into the reduction shaft furnace for producing sponge iron.

[0010] 高炉炉料热装,解决了全氧高炉炉腹煤气量少带来的炉身热量不足和炉料预还原性差的问题。 [0010] blast furnace and hot charging, solve the shortage of oxygen blast furnace bosh gas furnace caused less body heat and pre-charge reducing poor. 高炉采用全热氧燃烧,焦比降低到200Kg/tHM以下,喷煤量提高到300Kg/tHM以上,成为高炉冶炼的主要能源,改变了传统高炉炼铁的能源结构;采用全氧燃烧技术,高炉炉顶煤气无N2,炉顶煤气品质好;全氧高炉与竖炉联合生产,形成钢铁企业长流程与短流程并存模式,消除了部分长流程弊端,如CO2排放量高,能耗高等,扩大了产品结构范围,优质DRI可用于开发生产高品质钢,以常流程的煤气作为短流程的还原气,提高了高炉煤气的利用价值,煤气循环使用,CO2排放量显著降低;高炉煤气经换热后热量用于加热竖炉还原气,提高了燃料利用率。 BF total heat of combustion of oxygen and reducing coke ratio to 200Kg / tHM or less, to increase the pulverized coal injection rate 300Kg / tHM above, a major energy blast furnace, blast furnace changed the traditional energy structure; all-oxygen combustion technology, BF top gas without N2, good quality top gas; oxygen blast furnace and the shaft furnace joint production, iron and steel enterprises to form long and short process flow coexistence model, part of a long process eliminates the drawbacks, such as high CO2 emissions, high energy consumption, expand product structure scope, quality DRI can be used to develop and produce high-quality steel, coal gas is often a flow of a short flow reducing gas improves the use value of blast furnace gas, gas recycling, CO2 emissions decreased significantly; blast furnace gas through a heat exchanger after the reduction shaft furnace is used to heat air, to improve the fuel efficiency. 全氧高炉与气基竖炉联合生产使得大量高炉煤气得到了合理的利用,节能、减排、实现超低ニ氧化碳排放。 Oxygen blast furnace gas-based shaft furnace so that the combined production of a large number of blast furnace gas obtained by using a reasonable energy saving, reduction, Ni ultra-low carbon emissions.

[0011] 本发明的有益效果是:该系统可使得大量高炉煤气得到了合理的利用,节能、减排。 [0011] Advantageous effects of the present invention are: the system can be obtained such that a large number of blast furnace gas rational use of energy-saving, emissions reduction. 附图说明 BRIEF DESCRIPTION

[0012]图I为本发明原燃料热装、全热氧高炉与竖炉联合生产系统的结构示意框图。 [0012] FIG raw fuel heat apparatus I of the present invention, a schematic block diagram of the system blast oxygen and total heat production joint shaft furnace.

[0013] 图中:1_高炉,2-第一高炉煤气管,3-换热器,4-助燃空气管,5-第二高炉煤气管,6-脱除CO2设备,7-第一CO气管,8-第二CO气管,9-水煤气变换设备,10-氢气管,11-混合加压器,12-第一混合气管,13-加热器,14-第二混合气管,15-气基竖炉(或称竖炉)。 [0013] FIG: 1_ blast furnace, blast furnace gas 2- first pipe, the heat exchanger 3-, 4- combustion air duct, a second blast furnace gas pipe 5-, 6- CO2 removal equipment, the first 7- CO trachea, the trachea CO second 8-, 9- water gas shift device, 10 hydrogen gas tube, 11 pressure mixing device, 12 a first gas line, 13 a heater, 14 a second gas line, the gas-yl 15 shaft furnace (or vertical furnace).

具体实施方式 detailed description

[0014] 下面通过图I对本发明的生产步骤做进ー步的说明,但不构成对本发明的限制。 [0014] I do explained below with FIG ー step into the production step of the present invention, but not limit the present invention.

[0015] 如图I所示,原燃料热装、全热氧高炉与竖炉联合生产系统,它包括高炉I和气基竖炉15 ;高炉I的炉顶的高炉煤气出ロ由第一高炉煤气管2与换热器3的高炉煤气输入口相连通,换热器3(换热器3以空气作为换热介质,从换热器3出来的热空气经助燃空气管4到加热器13,作为助燃空气,助燃空气管4走的是换热后的助燃空气)的空气输出口由助燃空气管4与加热器13的助燃空气输入口相连通,换热器3的高炉煤气输出ロ由第二高炉煤气管5与脱除CO2设备6的输入口相连通【高炉产生的炉顶煤气(或称高炉煤气)经换热后,全部进入脱除CO2设备6脱除CO2】;脱除CO2设备6的第一输出ロ由第一CO气管7与混合加压器11的第二输入口相连通(脱除CO2设备6的第一输出口、第二输出口均输出CO气+H2),脱除CO2设备6的第二输出ロ由第二CO气管8与水煤气变换设备9的输入口相连通,水煤气变 [0015] FIG I, the hot raw fuel loading, total heat blast oxygen production system with a joint shaft furnace, comprising a blast furnace and gas-based shaft furnace 15 I; I top of the blast furnace gas by the first blast furnace gas out ro heat exchanger tube 2 and the blast furnace gas inlet 3 is connected through the heat exchanger 3 to the heater 4 from the heat exchanger 13 3 out of hot air through the combustion air (heat exchanger 3 to air as the heat exchange medium, as the combustion air, the combustion air pipe 4 is taking combustion air heat exchanger) of the air outlet of the combustion air inlet 4 and the heater 13 are connected through a combustion air duct, the heat exchanger 3 of the blast furnace gas output by the first ro blast furnace gas pipe 5 is connected with two CO2 removal apparatus 6 through the input port [blast furnace top gas generated (or blast furnace gas) through a heat exchanger, the CO2 removal device 6 into the full removal of CO2]; CO2 removal device a first output 6 by the first CO ro pipe 7 and the second mixing input port 11 communicates pressurized (CO2 removal apparatus of the first output port 6, a second output port are output gas CO + H2), de CO2 removal device of the second ro 6 output from the second inlet pipe 8 with CO the water gas shift apparatus 9 communicates, water gas becomes 设备9的输出ロ由氢气管10与混合加压器11的第一输入口相连通(水煤气变换设备9的输出ロ输出H2);混合加压器11的输出ロ由第一混合气管12与加热器13的混合气体输入口相连通,加热器13的混合气体输出ロ由第二混合气管14与气基竖炉15的混合气体输入口相连通;加热器13上设有燃料输入口。 9 ro output apparatus 10 by pressing the first mixing input 11 is connected to the hydrogen gas through the tube (water gas shift output apparatus output H2 of ro ​​9); mixing the output pressure of 12 ro 11 with the first gas line is heated by mixes gas inlet 13 in communication, a mixed gas output by the second heater 13 ro mixed gas line 14 and gas inlet 15 of gas-based shaft furnace communicated; provided with a fuel inlet 13 on the heater.

[0016] 应用实施例I [0016] Application Example I

原燃料热装、全热氧高炉与竖炉联合生产エ艺,步骤为: Hot charging the raw fuel, and the total heat of oxygen blast joint production Ester shaft furnace arts, the steps of:

1)原燃料热装、全热氧高炉与竖炉联合生产系统的准备; 1) hot raw fuel loading, total heat blast oxygen production system with a vertical furnace is prepared;

2)高炉炉料热装{烧结矿、球团矿、焦炭的装入温度为600°C装入高炉,这里所指的热装主要想强调装入高炉的炉料是高温的},将热态烧结矿、热态球团矿和热态焦炭(焦炭、烧结矿、球团矿热装温度均为600°C)分批次从炉顶加入高炉,其中吨铁焦炭消耗量在200Kg/tHM以下; 2) charged with blast furnace hot charge temperature {sinter, pellets and coke is charged with 600 ° C furnace hot charging referred to herein primarily wish to emphasize the blast furnace charge is loaded} a high temperature, the hot sintering ore, pellets and hot hot coke (coke, sinter, pellets are hot charge temperature 600 ° C) was added in batches from the blast furnace top, wherein ton of iron coke consumption 200Kg / tHM in the following;

3)向高炉中鼓入氧气(体积纯度为80%以上),氧气温度为650°C,氧气用量为250-350Nm3/tHM ; 3) Oxygen was bubbled into the blast furnace (having a purity of 80% or more by volume), oxygen, temperature 650 ° C, an amount of oxygen 250-350Nm3 / tHM;

4)炉顶煤气(或称高炉煤气)经换热并脱除CO2后(炉顶煤气主要为C0、H2、C02和H2O),部分用于水煤气变换产生H2 (C0+H20=C02+H2),部分与产生的H2,按H2/C0的体积比=1 :1的比例混合,作为竖炉还原气,还原气经加压到0. 5-0. 7MPa,并加热到800-900°C后,送入气 4) top gas (or blast furnace gas) through a heat exchanger and after the removal of CO2 (the top gas mainly C0, H2, C02 and H2O), water gas shift section for generating H2 (C0 + H20 = C02 + H2) , part by volume H2 / C0 is 1 and the generation ratio = H2: 1 ratio, shaft furnace as reducing gas, reducing gas, pressurized to 0. 5-0 7MPa, and heated to 800-900 ° C later, into the air

基竖炉生产海绵鉄。 CITIZEN shaft furnace-based production of sponge.

[0017] 经理论计算,IOOOm3高炉使用球团矿和烧结矿作为原料,并从风ロ鼓入650°C纯氧(体积纯度为80%以上),其生产技术指标如下: [0017] Through theoretical calculations, IOOOm3 blast furnace pellets and sintered ore as a starting material, and ro from the wind into the drum 650 ° C pure (purity of 80% by volume), the production technical indicators are as follows:

氧气消耗量:320Nm3/tHM, Oxygen consumption: 320Nm3 / tHM,

焦比:180Kg/tHM,煤比:350Kg/tHM, Coke ratio: 180Kg / tHM, coal ratio: 350Kg / tHM,

炉顶煤气量:850Nm3/tHM, Top gas amount: 850Nm3 / tHM,

炉顶煤气成分(体积):C0:47. 28%, CO2:36. 75%, H2:5. 35%, H2O :6. 1%,其他:4. 52%, Top gas composition (by volume): C0:. 47 28%, CO2:. 36 75%, H2:. 5 35%, H2O:. 6 1%, Other: 452%

竖炉燃料(体积比)H2/C0 :1:1, Shaft furnace fuel (by volume ratio) H2 / C0: 1: 1,

竖炉产量:320000t/a。 Vertical furnace output: 320000t / a.

[0018] 应用实施例2 [0018] Application Example 2

与应用实施例I基本相同,不同之处在于: Application substantially the same as Example I, except that:

焦炭、烧结矿、球团矿热装温度分别为600°C、700°C和800°C。 Coke, sinter, pellets were hot charge temperature of 600 ° C, 700 ° C and 800 ° C.

[0019] 经理论计算,3000m3高炉使用球团矿和烧结矿作为原料,并从风ロ鼓入750°C纯氧(体积纯度为80%以上),其生产技术指标如下: [0019] Through theoretical calculations, 3000m3 blast furnace pellets and sintered ore as a starting material, and ro from the wind into the drum 750 ° C pure (purity of 80% by volume), the production technical indicators are as follows:

氧气消耗量:300Nm3/tHM, Oxygen consumption: 300Nm3 / tHM,

焦比:150Kg/tHM, Coke ratio: 150Kg / tHM,

煤比:370Kg/tHM, Coal ratio: 370Kg / tHM,

炉顶煤气量:840Nm3/tHM, Top gas amount: 840Nm3 / tHM,

炉顶煤气量:840Nm3/tHM, Top gas amount: 840Nm3 / tHM,

炉顶煤气成分(体积):C0:45. 28%, CO2:35. 75%, H2:8. 35%, H2O :7. 1%,其他:3. 52%, Top gas composition (by volume): C0:. 45 28%, CO2:. 35 75%, H2:. 8 35%, H2O:. 7 1%, Other: 352%

竖炉燃料(体积)H2/C0 : 1.2:1, Shaft furnace fuel (by volume) H2 / C0: 1.2: 1,

竖炉产量:750000t/a。 Vertical furnace output: 750000t / a.

[0020] 应用实施例3 [0020] Application Example 3

与应用实施例I基本相同,不同之处在于: Application substantially the same as Example I, except that:

焦炭、烧结矿、球团矿热装温度分别为800°C、600°C和700°C。 Coke, sinter, pellets were hot charge temperature of 800 ° C, 600 ° C and 700 ° C.

[0021] 经理论计算,5000m3高炉使用球团矿和烧结矿作为原料,并从风ロ鼓入850°C纯氧(体积纯度为80%以上),其生产技术指标如下: [0021] Through theoretical calculations, 5000m3 blast furnace pellets and sintered ore as a starting material, and ro from the wind into the drum 850 ° C pure (purity of 80% by volume), the production technical indicators are as follows:

氧气消耗量:290Nm3/tHM, Oxygen consumption: 290Nm3 / tHM,

焦比:140Kg/tHM, Coke ratio: 140Kg / tHM,

煤比:400Kg/tHM, Coal ratio: 400Kg / tHM,

炉顶煤气量:820Nm3/tHM, Top gas amount: 820Nm3 / tHM,

炉顶煤气成分(体积):CO:46. 15%, CO2:33. 75%, H2:8. 35%, H2O :9. 1%,其他:2. 65%, 竖炉燃料(体积)H2/C0: 1.1:1, Top gas composition (by volume): CO:. 46 15%, CO2:. 33 75%, H2:. 8 35%, H2O:. 9 1%, Other: 265% shaft furnace fuel (by volume) H2 of / C0: 1.1: 1,

竖炉产量:1200000t/a。 Vertical furnace output: 1200000t / a.

[0022] 应用实施例4 [0022] Application Example 4

与实施例I基本相同,不同之处在于: Substantially the same as in Example I, except that:

焦炭、烧结矿、球团矿热装温度分别为800°C、600°C和700°C。 Coke, sinter, pellets were hot charge temperature of 800 ° C, 600 ° C and 700 ° C.

[0023] 经理论计算,3000m3高炉使用球团矿和烧结矿作为原料,并从风ロ鼓入1300°C纯氧(体积纯度为80%以上),其生产技术指标如下: [0023] Through theoretical calculations, 3000m3 blast furnace pellets and sintered ore as a starting material, and ro from the wind into the drum 1300 ° C pure (purity of 80% by volume), the production technical indicators are as follows:

氧气消耗量:260 NmVtHM, Oxygen consumption: 260 NmVtHM,

焦比:140Kg/tHM, Coke ratio: 140Kg / tHM,

煤比:400Kg/tHM, Coal ratio: 400Kg / tHM,

炉顶煤气量:800NmVtHM,炉顶煤气成分(体积):CO:46. 15%, CO2:33. 75%, H2:8. 35%, H2O :9. 1%,其他2. 65%,竖炉燃料(体积)H2/C0:2:1, Top gas amount: 800NmVtHM, top gas composition (by volume): CO:. 46 15%, CO2:. 33 75%, H2:. 8 35%, H2O:. 9 1%, 2.65% other, vertical furnace fuel (by volume) H2 / C0: 2: 1,

竖炉产量:750000 t/a。 Vertical furnace output: 750000 t / a. · ·

Claims (2)

  1. 1.原燃料热装、全热氧高炉与竖炉联合生产系统,它包括高炉(I)和气基竖炉(15);其特征在于高炉(I)的炉顶的高炉煤气出口由第一高炉煤气管(2)与换热器(3)的高炉煤气输入口相连通,换热器(3)的空气输出口由助燃空气管(4)与加热器(13)的助燃空气输入ロ相连通,换热器(3)的高炉煤气输出ロ由第二高炉煤气管(5)与脱除CO2设备(6)的输入ロ相连通;脱除CO2设备(6)的第一输出ロ由第一CO气管(7)与混合加压器(11)的第二输入口相连通,脱除CO2设备(6)的第二输出口由第二CO气管(8)与水煤气变换设备(9)的输入口相连通,水煤气变换设备(9)的输出口由氢气管(10)与混合加压器(11)的第一输入ロ相连通;混合加压器(11)的输出口由第一混合气管(12)与加热器(13)的混合气体输入ロ相连通,加热器(13)的混合气体输出口由第二混合气管(14)与气基竖炉 1. The hot raw fuel loading, total heat blast oxygen production system with a joint shaft furnace, comprising a blast (I) and gas-based shaft furnace (15); characterized in that the blast furnace top gas outlet (I) by a first blast gas pipe (2) and the heat exchanger (3) is connected to the input port of the blast furnace gas through the heat exchanger (3) of the air outlet of the combustion air from the combustion air pipe (4) and the heater (13) is connected through an input ro , a heat exchanger (3) of the blast furnace gas output by the second communicating ro blast furnace gas pipe (5) with the CO2 removal device (6) ro input; a first output ro CO2 removal device (6) by the first CO pipe (7) with a pressurized mixture (11) through a second input port coupled to, CO2 removal device (6) by the second output port of the second CO duct (8) and the water gas shift device (9) is input is connected through the port, gas shift device (9) of the outlet water from the hydrogen input of the first tube (10) with a pressurized mixture (11) in communication ro; hybrid pressurizer (11) from the output port of the first gas line (12) and the heater (13) is a mixed gas input ro communicating, a heater (13) by the mixed gas outlet of the second gas line (14) and the gas-based shaft furnace (15)的混合气体输入口相连通。 (15) a mixed gas inlet communicating.
  2. 2.根据权利要求I所述的原燃料热装、全热氧高炉与竖炉联合生产系统,其特征在于加热器(13 )上设有燃料输入ロ。 The hot raw fuel apparatus according to claim I, total heat blast oxygen production system with a joint shaft furnace, wherein a fuel input ro upper heater (13).
CN 201210266608 2012-07-30 2012-07-30 Joint production system of crude fuel hot charging and total heat oxygen blast furnace and vertical furnace CN102758037A (en)

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