CN102220443A - Device and method for top gas enrichment utilization of blast furnace - Google Patents

Device and method for top gas enrichment utilization of blast furnace Download PDF

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CN102220443A
CN102220443A CN 201110153697 CN201110153697A CN102220443A CN 102220443 A CN102220443 A CN 102220443A CN 201110153697 CN201110153697 CN 201110153697 CN 201110153697 A CN201110153697 A CN 201110153697A CN 102220443 A CN102220443 A CN 102220443A
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gas
blast furnace
enriched
furnace
device
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CN 201110153697
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Chinese (zh)
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刘自民
刘英才
夏能伟
宋灿阳
张晓萍
李令锋
李小静
王思维
金俊
陈东峰
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马鞍山钢铁股份有限公司
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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
    • Y02P10/20Process efficiency
    • Y02P10/25Process efficiency by increasing the energy efficiency of the process
    • Y02P10/265Process efficiency by increasing the energy efficiency of the process by heat recovery
    • Y02P10/283Process efficiency by increasing the energy efficiency of the process by heat recovery using water, e.g. for cooling

Abstract

The invention relates to a device and method for top gas enrichment utilization of a blast furnace, in particular to a device and method for using top gas in a blast furnace production process, belonging to the field of smelting pig iron with the blast furnace. The device is characterized in that: a tee joint is arranged on a pipeline between a gas purifying and de-dusting system and an excess pressure power generation device; a gas pressurization device, a gasification furnace and a gas back-eject hole which is formed on the blast furnace are connected through the pipeline and a valve to form one way of the tee joint; the gasification furnace is provided with an oxygen supply pipeline and a coal blending device; the enriched gas, after being pressurized, enters the gasification furnace and is subjected to gasification reaction with oxygen and powder coal in the pressurized gasification furnace; a reaction product is ejected into the blast furnace for smelting iron through the back-eject hole which is formed on the blast furnace; the excess pressure power generation device is respectively connected with a hot blast heater, a power plant boiler pipeline and a valve through a gas distributor to form another way of the tee joint; and the generated hot air is fed into the blast furnace through a nozzle. The device has the advantages of novel conception, simple process flow, easiness in implementation, safety and reliability in operation and capabilities of increasing the calorific value of gas, ejecting back to smelt iron, increasing the indirect reduction rate, reducing the coal ratio, reducing blast furnace slag and CO2 emission, regulating and controlling the width of a cohesive zone of the blast furnace, ensuring long-term smooth running of the blast furnace, avoiding diffusion of the top gas, saving energy and contributing to environment friendliness.

Description

高炉炉顶煤气富化利用装置及方法 Blast furnace top gas enrichment apparatus and method for using

技术领域 FIELD

[0001] 本发明属于高炉炼生铁,尤其涉及高炉生产中炉顶煤气使用装置及方法。 [0001] The present invention belongs to the iron smelting furnace, in particular blast furnace top gas is directed to apparatus and methods used. 背景技术 Background technique

[0002] 当今高炉冶炼生产仍是最主要的炼铁方式。 [0002] Today blast furnace iron production is still the most important way. 高炉炼铁能源消耗很大,炼铁焦比300〜500kg/tFe。 Blast furnace ironmaking energy consumption of large, iron-smelting coke 300~500kg / tFe. 在炼铁过程中同时产生大量的高温、高压、含尘的炉顶煤气(下简称煤气),温度180-250°C,压力150-250kpa,含尘15_20g/Nm3。 A large amount of high temperature and pressure, dust top gas (hereinafter referred to as gas) in the process while the iron, the temperature of 180-250 ° C, pressure 150-250kpa, dust 15_20g / Nm3. 煤气中含有约25%的CO和25% 的的C02。 Gas containing about 25% CO and 25% of C02. 为了提高能源的利用率,减少环境污染,炼铁工程师们做了很多有益的工作,并且取得了一定的效果。 In order to improve energy efficiency, reduce environmental pollution, iron engineers have done a lot of useful work, and achieved certain results. 当前,采用的高炉炉顶煤气利用装置,是由煤气经重力除尘和旋风除尘,经三通与放散阀、煤气净化器管道连接,煤气净化器净化煤气,放散阀直接排放煤气;余压发电装置与煤气净化装置管道连接,利用煤气的压力发电;余压发电装置经三通分别与热风炉、电厂或其它炉窑管道连接,煤气用作热风炉、电厂或其它炉窑的燃料。 Currently, blast furnace top gas utilization means employed, by gravity through the dust and the gas cyclone, and through the three-way relief valve, the gas purge conduit is connected to a gas purge gas purifiers, direct exhaust gas relief valve; TRT means conduit means connected to the gas purification, power generation using gas pressure; TRT means connected to the stove, or other kiln plant via piping tees, respectively, as gas stove, or other kiln plant fuel. 其方法是由煤气收集器收集炉顶煤气,送入煤气净化器进行除尘净化、降温,温度降为80°C,再送入余压发电装置,利用煤气压力进行余压发电,压力变为常压;最后送入热风炉、电厂或其它炉窑,作为燃料。 Which is collected by a gas collector top gas, is fed into the gas purification for dust separation, cooling, the temperature dropped to 80 ° C, then into the TRT means using gas pressure generation and pressure, atmospheric pressure becomes ; finally fed stove, or other kiln plant as a fuel. 在煤气多余及特殊情况下,煤气通过放散阀直接排放,以确保高炉稳定顺行, 安全生产。 Under special circumstances and the excess gas, the gas is directly discharged through the relief valve to ensure stability along the line BF, safe production.

[0003] 存在的缺陷是:煤气热值低,使用时必须配合其它燃料,或者富氧燃烧,才能用于发电、烘烤冶金炉窑,回收利用成本高,收益低;高炉生产波动对煤气成份和流量影响大,影响煤气利用装置的运行;煤气常通过放散阀直接排放,,煤气放散多,利用率低,还污染环 [0003] the defects are: low calorific value gas, the use of other fuels must meet, or oxygen-enriched combustion, can be used for power generation, metallurgical roasting furnaces, the high cost of recycling, low yields; Blast Furnace Gas production fluctuation component and traffic impact, affect the operation of the gas utilization means; gas normally discharged directly through the relief valve ,, multiple gas emission, low utilization, but also pollute the ring

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发明内容 SUMMARY

[0004] 为了克服现有技术存在的缺陷,本发明的目的是提供一种高炉炉顶煤气富化利用装置及方法,提高高炉煤气热值,提高间接还原率,降低高炉大型化对焦炭强度和反应性的苛刻要求,降低高炉焦比、减少高炉渣量和CO2的排放量,确保高炉生产安全,稳定地进行。 [0004] In order to overcome the drawbacks of the prior art, an object of the present invention is to provide an apparatus and a method of using a blast furnace top gas rich, increase the blast furnace gas calorific value, the rate of increase indirect reduction, reducing the size of the blast furnace and coke strength the reaction of the demanding requirements, reduced coke furnace, blast furnace slag to reduce the amount of CO2 emissions and to ensure that the blast furnace production safety, stably.

[0005] 高炉炉顶煤气富化利用装置,由煤气初除尘系统、煤气净化除尘系统、余压发电装置、热风炉和火力发电装置经管道、阀门连接构成,其特点是:煤气净化除尘系统与余压发电装置之间的管道上设置三通,一路由煤气加压装置、气化炉和高炉设的煤气回喷孔经管道、阀门连接,气化炉设有供氧管路和配煤装置,煤气加压后进入气化炉与加压气化炉内的氧、煤粉进行气化反应,反应生成物由高炉设的回喷孔喷入高炉炼铁;另一路由余压发电装置经气体分配器分别与热风炉、电厂锅炉(或其它炉窑)管道、阀门连接,利用煤气压力进行发电,发电后用作燃烧热风炉、电厂锅炉及其它炉窑的燃料,热风炉产生的热风由风口送入高炉中。 [0005] Blast furnace top gas enriched utilization means, the beginning of the gas removal system, dust removal gas purification system, residual pressure generating means, thermal means and stove via pipes, valves connected to form, which is characterized by: gas purification system and dust is provided on the conduit means between the TRT-way, all the way from the gas pressurizing means, and a gasifier back to the blast furnace gas provided via conduit orifice, valve connections, and blending the gasifier with oxygen supply tube means after pressing into the oxygen gas, the coal gasifier with the gasifier for the gasification reaction, the reaction product back from the blast orifice disposed injected into the blast furnace; another route by means TRT each gas distributor pipes, valves connected to the stove, boiler plant (or other kiln), power generation using gas pressure, as the power generation fuel burning stove, and other power plant boiler furnaces, hot air generated by a hot stove outlet into the blast furnace.

[0006] 本发明进一步改进,所述的煤气初除尘系统由重力除尘器+旋风除尘器构成,较传统工艺增加了一个旋风除尘器,进行初步除尘以防止输送管道的堵塞。 [0006] The present invention is further improved, the gas removal system is constituted by First + cyclone dust gravity, than the traditional process adds a cyclone, a preliminary dust removal to prevent clogging of the delivery conduit.

[0007] 本发明进一步改进,所述的煤气加压装置由气体增压泵构成,由管道、阀门分别与净化除尘器、气化炉连接,将高炉煤气从低压增加到IMPa左右,以利于高炉煤气能够进入气化炉。 [0007] The present invention is further improved, the gas pressurizing means is constituted by a gas booster pump, the piping, valves and purification filter, respectively, connected to the gasifier, blast furnace gas from the low pressure of IMPA to around, in order to facilitate BF gas can enter the gasifier.

[0008] 本发明进一步改进,所述的气化炉分别设氧气喷口和煤粉的喷口,将700 °C左右的氧气,加压后的高炉煤气、煤粉通过不同的喷口喷入气化炉进行气化。 [0008] The present invention is further improved, the gasifier oxygen nozzle orifice are provided and pulverized coal, the oxygen of about 700 ° C, the pressurized blast furnace gas, the pulverized coal is injected into the gasifier through different orifices gasified.

[0009] 本发明进一步改进,所述的煤气回喷孔设在炉腹下部、风口上方。 [0009] The present invention is further improved, the gas injection hole provided in the back, above the furnace tuyere hypogastrium. 其原因是,首先避免了该部分煤气在风口的燃烧;其次该部分气体可以在炉腹的软熔带加快热交换,能够实现控制软熔带的目的;最后高温气体的CO和H2增加有利于提高间接还原率,吸收热量, 使得高炉的高温区下移。 The reason is that, first of all to avoid the portion of the gas at the outlet of the combustion; secondly the part of the gas can accelerate heat exchange cohesive zone bosh, to achieve the purpose of controlling the cohesive zone; final high temperature gas of CO and H2 increases facilitate rate increase indirect reduction, absorbs heat, so that the high temperature region of the blast furnace down.

[0010] 高炉炉顶煤气富化利用方法,应用上述装置按以下步骤进行: [0010] Blast furnace top gas enriched by the method, using the above apparatus as follows:

1、炉顶煤气初除尘系统由高炉炉顶排出的煤气(温度180°c -250°c,压力150-250 KPa,含尘15-20g/Nm3)经重力除尘和旋风除尘将大颗粒粉尘,大部分粉尘去除,以便于煤气的管道输送,减少加压站的堵塞。 1, top gas discharged from the dedusting system early blast furnace top gas (temperature 180 ° c -250 ° c, a pressure 150-250 KPa, dust 15-20g / Nm3) via gravity dust and large particles of dust cyclone, most of the dust is removed, in order to deliver to the gas duct, reduce clogging of the pressing station.

[0011] 2、煤气净化除尘系统将含尘煤气经文氏管或布袋净化除尘,使得煤气温度降至80°C,压力120 Kpa,含尘量降低至符合余压发电的含尘要求,以减轻对余压透平发电机的损坏,更便于发电机的后续用户使用; [0011] 2, the gas purification dusty gas removal system or the venturi purge dust bag, so that the gas temperature is lowered to 80 ° C, pressure 120 Kpa, to reduce the dust content to meet the requirements of TRT dust to reduce damage to the residual pressure turbine generator, the generator easier subsequent user usage;

3、煤气富化回喷 3, gas-rich spray-back

a)、加压将150-250 KPa的煤气的一部分引入加压装置中加压至IMpa ; a), a portion of the pressurized gas is introduced into 150-250 KPa pressurized to a pressure device of IMPA;

b)、煤气富化将680-750°C的氧气、加压的高炉煤气和煤粉通过各自的喷口喷入气化炉内,进行气化反应,反应如下: B), the oxygen-enriched gas 680-750 ° C, the pressurized blast furnace gas and coal through the respective discharge ports into the gasifier, the gasification reaction, the reaction is as follows:

(1) 挥发份的完全分解反应:CHx0y=(ly)C + yC0 + (1) is completely volatile decomposition reaction: CHx0y = (ly) C + yC0 +

|· H2 -17. 4 kj/mol |. · H2 -17 4 kj / mol

(2)挥发份的部分解反应:CHx0y =(ly- | )C+yC0+ ^ H2+ ^ CH4 -8. 1 kj/mol (2) partial solution of the volatile parts of the reaction:. CHx0y = (ly- |) C + yC0 + ^ H2 + ^ CH4 -8 1 kj / mol

ο 4 ο ο 4 ο

(3) Boudouard 反应:C+C02=2C0 -162 kj/mol (3) Boudouard reaction: C + C02 = 2C0 -162 kj / mol

(4) C 的水煤气反应:C+H20=C0+H2 -119 kj/mol Water gas reaction (4) C is: C + H20 = C0 + H2 -119 kj / mol

(5) C 的完全燃烧反应:C+02=C02 +409 kj/mol Complete combustion (5) C reaction: C + 02 = C02 +409 kj / mol

(6) C的不完全燃烧反应:2C+02=2C0 +123 kj/mol Incomplete combustion (6) C reaction: 2C + 02 = 2C0 +123 kj / mol

(7) C 的甲烷化反应:C+2H2=CH4 +87 kj/mol Methanation reaction (7) C is: C + 2H2 = CH4 +87 kj / mol

(8) H2 的燃烧反应:2H2+02=2H20 +242 kj/mol (8) H2 combustion reaction: 2H2 + 02 = 2H20 +242 kj / mol

(9) CO 的燃烧反应:2C0+02=2C02 +28 3 . 2 kj/mol (9) the combustion reaction of CO:. 2C0 + 02 = 2C02 +28 3 2 kj / mol

(10)0)与水的反应:0)+!120=0)2+!12 +42 kj/mol (10) 0) reaction with water:!! 0) + 120 = 0) 2+ 12 +42 kj / mol

(11)甲烷的水煤气反应:CH4+H20 =C0+3H2 -206 kj/mol (11) the water gas reaction of methane: CH4 + H20 = C0 + 3H2 -206 kj / mol

在上述反应中,(1)- (4)以及(11)均为吸热反应,所需热量均来自反应(5)- (10)。 In the above reaction, (1) - (4) and (11) are endothermic, the heat required for the reaction are from (5) - (10). 气化反应产物中CCHH2占70%以上,其中H2占10-30%,气体温度850_900°C,压力由阀门进 CCHH2 gasification reaction product of more than 70%, which accounts for 10-30% H2 gas temperature 850_900 ° C, a pressure in the intake valve

行调整。 Line adjustment.

[0012] C)、富化气体回喷富化后的煤气由回喷孔喷入高炉炉腹中,可以避开风口回旋区的强氧性气氛,同时,在软熔带底层通入富氢的高温还原性气体可以大幅度地提高间接还原率,理论研究表明提高间接还原有利于高炉节能,可以降低吨铁能耗,减少CO2排放,同时该气体在软熔带的流动和间接还原反应可以调整软熔带宽度,改变高炉内部温度场,合理的减薄软熔带宽度,在高炉中心区域,软熔带较宽,相应的高温区宽,间接还原反应发生较多,吸热较多,减薄的幅度较大;在高炉边缘,软熔带较薄,通过调整压力和流量,吸热较少,减薄的幅度较小,故该气体通入方式可以合理的减薄软熔带的宽度,有效的避免因原燃料条件的变化对高炉炉况造成的波动,保证高炉的长期顺行。 [0012] C), gas-enriched gas injected back by the return of the enriched orifice belly injected into the blast furnace, an oxygen atmosphere, can avoid strong Raceway, while in cohesive zone into a hydrogen-rich underlayer the high-temperature reducing gas can greatly increase indirect reduction rate, theoretical studies have shown beneficial to increase indirect reduction furnace energy saving, energy consumption can be reduced ton of iron, to reduce CO2 emissions, while the gas may flow in the cohesive zone and indirect reduction reaction adjust the width of the reflow, the temperature field changes the blast furnace and reasonable thinning reflow width, in the central region of the blast furnace, the cohesive zone is wide, a wide region corresponding high temperature, more indirect reduction reaction, endothermic more, thinned large amplitude; the edge of the blast, thin cohesive zone by adjusting pressure and flow rate, less endothermic, thinning smaller amplitude, so the gas can be passed into a reasonable manner thinned cohesive zone width, effectively avoid fluctuations due to changes in raw material and fuel conditions caused by the blast furnace conditions, to ensure the long-term anterograde blast furnace.

[0013] 4、余压发电净化后的另一部分高炉煤气经余压透平发电装置发电,煤气压力下降为常压煤气。 [0013] 4, another portion of the purified TRT blast furnace gas turbine power generation apparatus by generating and pressure, the gas pressure drops to atmospheric gas.

[0014] 5、用作燃料常压煤气直接作为热风炉和电厂或者其它炉窑的燃料,热风炉生成的热风(空气)由风口送入高炉中。 [0014] 5, used as fuel gas directly as a fuel pressure stove or other plants and furnaces, stove hot air generated (air) into the blast furnace from the tuyere. 不用加入其它燃料,减少部分设备的投资和维护成本,便于热风炉和电厂锅炉的操作。 Without the addition of other fuels, reducing investment and maintenance costs portion of the device, easy to operate stove and boiler plant.

[0015] 与现有技术相比,优点是:构思新颖,工艺流程简单,容易实施,操作安全可靠;煤气热值提高,回喷炼铁,提高还原率,降低焦比,减少高炉渣量和CO2排放,调控高炉软熔带宽度,保障高炉长期顺行,避免煤放散,节约能源,有利于环境保护。 [0015] Compared with the prior art, the advantages are: novel, simple process, easy to implement, reliable operation; gas calorific value increased, spray back iron, increase the reduction rate, decreased coke ratio and reducing the amount of blast furnace slag CO2 emissions, the regulation reflow furnace width, long-term protection of blast furnace along the line, avoid coal emission, save energy, are environmentally friendly.

附图说明 BRIEF DESCRIPTION

[0016] 下面对照附图对本发明作进一步说明。 [0016] The following reference to the drawings The present invention will be further described.

[0017] 图1是高炉炉顶煤气富化利用装置示意图。 [0017] FIG. 1 is a schematic view of a blast furnace top gas enrichment apparatus use.

具体实施方式 detailed description

[0018] 由图1可以看出高炉炉顶煤气富化利用装置,其煤气初除尘系统2、煤气净化除尘系统3、余压透平发电装置7经管道、阀门连接,煤气净化除尘与余压发电装置之间的管道设三通4。 [0018] As can be seen from Figure 1 the blast furnace top gas enriched utilization means that gas removal system 2 First, the dust removal gas purification system 3, a residual pressure turbine power generation device 7 is connected via a conduit, valves, and pressure and gas purification dust conduit means provided between the generator 4 tee. 一路与加压装置5、气化炉6连接,气化炉设氧气喷口和煤粉喷口(图中均未标注),与配煤粉装置10、供氧装置11管道、阀门连接;高炉炉腹下部、风口14上方设煤气回喷孔13,气化炉与煤气回喷孔管道、阀门连接,富化后的煤气由回喷孔喷入高炉1中;另一路与余压透平发电装置连接,余压透平发电装置7与电厂锅炉9 (或其它炉窑)、热风炉12之间设气体分配器8,并以管道、阀门连接,煤气余压发电后变为常压,由管道送至热风炉、火力电厂作为燃料。 Along with the pressing means 5, 6 connected to the gasifier, and coal gasification furnace provided oxygen nozzle orifice (none of which are labeled), connected to the apparatus 10 with coal, the oxygen supply pipe 11, valves; blast bosh above the lower, gas outlet 14 back to the injection hole 13 is provided, and gasifier gas return conduit orifice, valve connections, the enriched gas injection holes injected into the back in a blast furnace; and a further channel connected Press Recovery , residual pressure turbine generator power plant boiler 7 and 9 (or other kiln), is provided between the stove gas distributor 128, and pipeline, the valve is connected, the TRT becomes atmospheric pressure, the feed pipe into a hot stove, fire power plants as fuel. 热风炉生成的热风,由风口14入高炉内。 Stove hot air generated by the air 14 into the blast furnace.

[0019] 本发明在2500m3高炉炼铁过程中煤气富化利用方法如下: [0019] The present invention is utilized in coal enrichment 2500m3 ironmaking process as follows:

1、煤气收集器收集炉顶煤气,温度200°C,压力210 kPa,煤气含N2 48. 5%, CO2 24. 25%, CO 24. 25%, H2O 3%,含尘15_20g/Nm3 ; 1, the gas collecting trap top gas temperature of 200 ° C, pressure 210 kPa, a gas containing N2 48. 5%, CO2 24. 25%, CO 24. 25%, H2O 3%, dust 15_20g / Nm3;

2、煤气净化器除尘、降温,根据除尘方式不同,煤气温度降至80-150°C,压力120-200 2, gas purifiers dust, cooling, dust removal depending embodiment, the gas temperature is reduced to 80-150 ° C, pressure of 120-200

kPa ; kPa;

3、煤气富化回喷 3, gas-rich spray-back

a)、加压弓丨出46Nm7tFe净化的煤气进入加压装置中,压力增加至1 MPa; A), a pressing bow Shu 46Nm7tFe purge gas into the pressurizing device, the pressure is increased to 1 MPa;

b)、煤气富化气化炉中喷入53Kg/tFe的煤粉和32 NmVtFe的氧气,制得900°C的富化煤气,其气体成份(按体积百分比%) CO 50. 91%, H220. 85%, N2 13. 24%,其他15%。 B), coal gasifier injected enriched 53Kg / tFe 32 NmVtFe pulverized coal and oxygen-enriched gas to obtain 900 ° C, the gas composition (percentage by volume%) CO 50. 91%, H220 . 85%, N2 13. 24%, the other 15%.

[0020] C)、富化气体回喷将富化气体由回喷孔喷入高炉内,喷入150 Nm7tFe,可降低焦比50 Kg/tFe。 [0020] C), back-enriched gas enriched gas discharge orifices by the return sprayed into the furnace, injecting 150 Nm7tFe, can reduce the coke rate 50 Kg / tFe.

[0021] 4、其余净化煤气经余压发电装置进行发电,降为常压煤气。 [0021] 4, the remaining gas purifying apparatus by TRT power, gas pressure drop. [0022] 5、用作燃料常压煤气经气体分配器输送至热风炉、火力电厂锅炉及其炉窑,用作燃料,热风炉产生的热风由风口送入高炉中。 [0022] 5, as the fuel pressure delivered to the gas stove through the gas distributor, and heating power plant boiler furnaces, as a fuel, the hot air generated by a hot stove of a blast furnace tuyeres.

Claims (6)

  1. 1.高炉炉顶煤气富化利用装置,由煤气初除尘系统(2)、煤气净化除尘系统(3)、余压透平发电装置(7)、热风炉(12)和火力发电装置(9)经管道、阀门连接构成,其特征在于煤气净化除尘系统(3)与余压发电装置(7)之间的管道上设置三通(4),一路由煤气加压装置(5)、气化炉(6)和高炉(1)设的煤气回喷孔(13)经管道、阀门连接,气化炉设有供氧管路(11)和配煤装置(10);另一路由余压发电装置(7)经气体分配器(8)分别与热风炉(12)、 电厂锅炉(9)及其它炉窖管道、阀门连接。 Enriched blast furnace top gas utilization means, at the beginning of the gas dust removal system (2), gas purification dust removal system (3), residual pressure turbine power plant (7), hot air (12) and the thermoelectric generators (9) via a conduit, connected to form a valve, wherein the conduit is provided between the dust gas purification system (3) and TRT means (7) a three-way (4), all the way from the gas pressurizing means (5), the gasifier gas return orifice (13) is provided in (6) and blast furnace (1) through a conduit, valve connections, the gasifier is provided with oxygen supply conduit (11) and the blending device (10); another route TRT means (7) via the gas distributor (8), respectively, and other pit furnace pipes, valves connected to the stove (12), the boiler power plant (9).
  2. 2.根据权利要求1所述的高炉炉顶煤气富化利用装置,其特征在于所述的煤气初除尘系统(2)由重力除尘器和旋风除尘器管道连接构成。 The blast furnace gas according to claim 1 enriched utilization device, wherein said gas First dust removal system (2) connected by a gravity dust cyclone and pipe configuration.
  3. 3.根据权利要求1所述的高炉炉顶煤气富化利用装置,其特征在于所述的煤气加压装置由气体增压泵构成。 The blast furnace gas according to claim 1 enriched utilization device, wherein said gas pressurizing means is constituted by a gas booster pump.
  4. 4.根据权利要求1所述的高炉炉顶煤气富化利用装置,其特征在于所述的气化炉(6) 分别设氧气喷口和煤粉的喷口。 The blast furnace gas according to claim 1 enriched utilization apparatus, characterized in that said gasifier (6) are provided spout oxygen and pulverized coal nozzle.
  5. 5.根据权利要求1所述的高炉炉顶煤气富化利用装置,其特征在于所述的煤气回喷孔(13)设在炉腹下部、风口(14)上方。 The blast furnace gas according to claim 1 enriched utilization apparatus, characterized in that the gas return orifice (13) provided in the belly section furnace, tuyere (14) above.
  6. 6.根据权利要求1所述的高炉炉顶煤气富化利用方法,应用上述装置按以下步骤进行:1)、煤气初除尘由煤气初除尘系统(2)初步将煤气中的大颗粒去除,使得煤气温度1800C _250°C,压力150-250 KPa,含尘由15_20g/Nm3降到<10 g/Nm3,以便于煤气在后续输送管道中不会发生堵塞现象。 The blast furnace gas according to claim 1 enriched by the method, using the above apparatus as follows: 1), the preliminary dedusting gas First gas in the large particles removed by the dust removal system Primary Gas (2), such that gas temperature 1800C _250 ° C, pressure of 150-250 KPa, the dust 15_20g / Nm3 down to <10 g / Nm3, so that clogging does not occur in the subsequent gas conveying pipe. 2)、煤气净化、降温煤气净化除尘系统(3)除尘,温度降至80°C,压力120 KPa;3)、煤气富化回喷a)、加压将150-250 KPa的煤气的一部分引入加压装置(4)中加压至IMpa ;b)、煤气富化将680—750°C的氧气、加压的高炉煤气和煤粉通过气化炉(6)上设的各自喷口喷入炉内,进行气化反应,气化反应产物中CCHH2占70%以上,其中H2占10 — 30%,气体温度850—900°C,压力由阀门进行调整;c)、富化气体回喷富化后的煤气由回喷孔(13)喷入高炉炉腹中;4)、余压发电 净化后的另一部分高炉煤气经余压透平发电装置(7)发电,煤气压力下降为常压煤气;5)、用作燃料常压煤气直接作为热风炉(12)和电厂锅炉(9)(或其它炉窑)的燃料气体,热风炉生成的热风由风口送入高炉中。 2), gas purification, gas purification dust cooling system (3) dust, temperature was lowered to 80 ° C, pressure 120 KPa; 3), A discharge gas-enriched Press), a portion of the pressurized gas introduced into the 150-250 KPa pressurizing the pressure means (4) to a IMpa; b), the gas-enriched oxygen 680-750 ° C, and pressurized blast furnace gas through a coal gasifier (6) provided on each spray nozzle into the furnace the, gasification reactor, the gasification reaction product CCHH2 more than 70%, which accounts for H2 10--30% gas temperature 850-900 ° C, the pressure is adjusted by a valve; C), jet-enriched gas enriched Press after the gas by the return orifice (13) is injected into the blast furnace belly; 4), TRT I through another portion of the blast furnace gas turbine power generating purified pressing means (7) power, gas pressure drop to atmospheric gas; 5), used directly as a fuel gas pressure stove (12) and fired boiler (9) (or other kiln) of the fuel gas, stove hot air generated by the blast furnace tuyeres.
CN 201110153697 2011-06-09 2011-06-09 Device and method for top gas enrichment utilization of blast furnace CN102220443A (en)

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CN102816880A (en) * 2012-08-17 2012-12-12 东北大学 Ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud
CN104024442A (en) * 2011-12-22 2014-09-03 Posco公司 Apparatus for manufacturing molten iron and method for manufacturing the same
GB2513185A (en) * 2013-04-19 2014-10-22 Siemens Vai Metals Tech Gmbh Blast furnace plant
CN104412056A (en) * 2011-12-27 2015-03-11 伊尔技术有限公司 Blast furnace with top-gas recycle
CN105586451A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586452A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586455A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586450A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas-based shaft furnace joint production system and joint production method
CN105586453A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586454A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586456A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105671228A (en) * 2016-02-29 2016-06-15 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas base shaft furnace combined production system and method
CN105671229A (en) * 2016-02-29 2016-06-15 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas base shaft furnace combined production system and method
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CN104024442A (en) * 2011-12-22 2014-09-03 Posco公司 Apparatus for manufacturing molten iron and method for manufacturing the same
CN104024442B (en) * 2011-12-22 2016-06-08 Posco公司 Molten iron manufacturing apparatus and method for manufacturing molten iron
CN104412056A (en) * 2011-12-27 2015-03-11 伊尔技术有限公司 Blast furnace with top-gas recycle
CN102816880A (en) * 2012-08-17 2012-12-12 东北大学 Ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud
CN102816880B (en) 2012-08-17 2014-04-02 东北大学 Ironmaking and aluminum extraction comprehensive utilization method of high-iron red mud
GB2513185A (en) * 2013-04-19 2014-10-22 Siemens Vai Metals Tech Gmbh Blast furnace plant
CN105586453A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586455A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586450A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas-based shaft furnace joint production system and joint production method
CN105586452A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586454A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586456A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105586451A (en) * 2016-02-29 2016-05-18 北京神雾环境能源科技集团股份有限公司 Joint production system and joint production method of oxygen blast furnace and gas-based shaft kiln
CN105671228A (en) * 2016-02-29 2016-06-15 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas base shaft furnace combined production system and method
CN105671229A (en) * 2016-02-29 2016-06-15 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas base shaft furnace combined production system and method
CN105734190A (en) * 2016-02-29 2016-07-06 北京神雾环境能源科技集团股份有限公司 Oxygen blast furnace and gas-based shaft kiln combination production system and combination production method
CN106282455A (en) * 2016-03-01 2017-01-04 华北理工大学 Blast furnace rich hydrogen smelting process efficiently utilizing metallurgical waste gas
CN106282455B (en) * 2016-03-01 2018-06-15 华北理工大学 Species efficient use of hydrogen-rich metallurgical furnace exhaust gas smelting process

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