CN106048118B - blast furnace gas recycling system - Google Patents
blast furnace gas recycling system Download PDFInfo
- Publication number
- CN106048118B CN106048118B CN201610697669.XA CN201610697669A CN106048118B CN 106048118 B CN106048118 B CN 106048118B CN 201610697669 A CN201610697669 A CN 201610697669A CN 106048118 B CN106048118 B CN 106048118B
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- China
- Prior art keywords
- gas
- blast furnace
- evaporator
- furnace gas
- expansion turbine
- Prior art date
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- 238000004064 recycling Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 79
- 239000000567 combustion gas Substances 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000011084 recovery Methods 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000005200 wet scrubbing Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of blast furnace gas recycling system, the system includes dry type exhaust dust device with bag, organic Rankine bottoming cycle TRT, multistage compressor installation and gas combustion-gas vapor combined cycle device, the organic Rankine bottoming cycle TRT includes evaporator, expansion turbine and generator, the sender property outlet of the working medium entrances of the evaporator and the expansion turbine passes through pipeline communication, the sender property outlet of the evaporator and the working medium entrances of the expansion turbine connect the output end of the expansion turbine by pipeline communication, the generator；The dry type exhaust dust device with bag, evaporator, multistage compressor installation and gas combustion-gas vapor combined cycle device are sequentially connected by pipeline.The blast furnace gas recycling system of the present invention, the temperature and pressure of blast furnace gas is taken full advantage of, improve the recycling efficiency of blast furnace gas.
Description
Technical field
The present invention relates to blast furnace gas recycling field；Specifically, recycled the present invention relates to a kind of blast furnace gas and be
System.
Background technology
Blast furnace gas is caused byproduct during blast furnace ironmaking, in its main component combustible component content account for 20~
30% or so, calorific value is relatively low, and dustiness is larger.Because blast furnace gas is the waste gas that discharge capacity is maximum in metallurgic waste gas, except
Outside personal combustion gas as smelter is directly burnt, the approach of many recycling blast furnace gases is also developed.
It is relatively common in these approach, blast furnace coal gas residual pressure recovery turbine power generation set (Top Gas Pressure
Recovery Turbine, TRT) it is to utilize the predetermined gas pressure energy of blast furnace and gas sensible heat, coal gas is imported expansion turbine pair
Outer acting, and turbine is connected with generator, Gas Pressure of Blast Furnaces and partial heat energy are converted to by mechanical energy by turbine
Electric energy is then converted to, forms blast furnace gas top pressure recovery gas turbine TRT.It can also enter by the blast furnace gas of hydraulic recovery
Enter gas combustion-gas vapor combined cycle and carry out combustion power generation, a kind of blast furnace gas follows as disclosed in patent document CN102703628A
The application method of ring comprehensive utilization device, the blast furnace gas that this method discharges blast furnace roof, through original blast furnace gas pipeline by
Filtered into dry-method bag-type pulsed dust-removing device bottom；Enter TRT decrease temperature and pressures through the net blast furnace gas pipeline of high pressure, by low pressure height
Producer gas pipeline exports；Part blast furnace gas imports blast furnace gas pipeline through blast funnace hot blast stove and enters blast-furnace hot-air furnace apparatus, complete
Into heating technique, remainder enters gas combustion-gas vapor combined cycle device recovery waste heat overbottom pressure.
But after carrying out dry method dust using the above method, remaining particle can be on the turbine blade in TRT in gas
Deposition, the deposition can cause great potential risk to TRT equipment, can cause equipment fluctuation of service, and it is stable to reduce system
Property.Therefore most TRT decompressions generating equipments are required to add extra wet-scrubbing equipment in its front end to ensure TRT equipment energy
Periodically remove deposition of the impurity particle on blade in gas.But due to the presence of wet-scrubbing equipment, it can reduce simultaneously
The temperature and pressure of blast furnace gas, this will also result in the reduction of combined combustion and steam turbine power unit efficiency so that blast furnace gas returns
Rate of producing effects reduces.
The content of the invention
It is an object of the invention to provide a kind of blast furnace gas recycling system, make full use of blast furnace gas temperature and
Pressure, improve the organic efficiency of blast furnace gas.
To achieve the above object, blast furnace gas recycling system of the invention, including it is dry type exhaust dust device with bag, organic
Rankine cycle TRT, multistage compressor installation and gas combustion-gas vapor combined cycle device, the organic Rankine bottoming cycle hair
Electric installation includes evaporator, expansion turbine and generator, the work of the working medium entrances of the evaporator and the expansion turbine
Matter outlet passes through pipeline communication, and the sender property outlet of the evaporator and the working medium entrances of the expansion turbine are connected by pipeline
Logical, the generator connects the output end of the expansion turbine；The dry type exhaust dust device with bag, evaporator, multi-stage compression
Machine device and gas combustion-gas vapor combined cycle device are sequentially connected by pipeline.
Preferably, the multistage compressor installation includes at least two compressors, and level is provided between each two compressor
Between heat exchanger.
Preferably, the working medium entrances of heat exchanger connect with the working medium entrances of the evaporator between the level, are changed between the level
The sender property outlet of hot device connects with the sender property outlet of the evaporator.
The blast furnace gas recycling system of the present invention, carried out by using the evaporator of organic Rankine bottoming cycle TRT
Heat exchange, keeps its pressure, and carries out supercharging heating by multistage compressor installation, greatly improves Combined cycle gas-steam turbine hair
The efficiency of electric installation, while the energy that evaporator is exchanged heat is generated electricity by organic Rankine bottoming cycle TRT, enter one
Step improves blast furnace gas recovery utilization rate.And whole system moisture-free, improve the efficiency of total system.The present invention's
Blast furnace gas recycling system, the temperature and pressure of blast furnace gas is taken full advantage of, improve the recycling of blast furnace gas
Efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram of the blast furnace gas recycling system of the present invention.
Embodiment
Referring to Fig. 1, blast furnace gas recycling system of the invention, including dry type exhaust dust device with bag 1, organic Rankine follow
Ring (Organic Rankine Cycle) TRT 2, multistage compressor installation 3 and gas combustion-gas vapor combined cycle device
4。
The organic Rankine bottoming cycle TRT 2 includes evaporator 21, expansion turbine 22 and generator 23, the evaporation
The sender property outlet of the working medium entrances of device 21 and the expansion turbine 22 passes through pipeline communication, the sender property outlet of the evaporator 21
The defeated of the expansion turbine 22 is connected by pipeline communication, the generator 23 with the working medium entrances of the expansion turbine 22
Go out end.
The dry type exhaust dust device with bag 1, evaporator 21, multistage compressor installation 3 and gas combustion-gas vapor combined cycle
Device 4 is sequentially connected by pipeline.
The gas combustion-gas vapor combined cycle device 4 includes Combined cycle gas-steam turbine unit 41 and steamed by the combustion gas
The second generator 42 that vapour Combined Cycle Unit 41 drives is formed, and reaches requirement parameter by the supercharging of multistage compressor installation 3
The gas turbine unit that coal gas enters in Combined cycle gas-steam turbine unit 41 is burnt, and is fully burnt and produces high temperature
Flue gas, propelling gas turbine engine are rotated and then generated electricity, and the high-temperature flue gas then discharged enters follow-up steam retracting device, produces steam
Enter steam turbine afterwards, drive the rotary electrification of the second generator 42.By the height of the gas combustion-gas vapor combined cycle device 4
Producer gas flue gas passes through purified treatment (not shown), is discharged into air.The gas combustion-gas vapor combined cycle device 4 is formed
For known technology, repeat no more here.
Using the blast furnace gas recycling system of the present invention, blast furnace gas of the HTHP with impurity passes through dry-method bag-type
The filtering of dust arrester 1, remove the evaporator 21 for entering organic Rankine bottoming cycle TRT 2 after contained impurity, blast furnace gas
After the cooling of evaporator 21, pressure is remained unchanged, and the blast furnace gas under this state is increased into multistage compressor installation 3
After pressure, generated electricity into gas combustion-gas vapor combined cycle device 4.Blast furnace gas after dedusting, by organic Rankine bottoming cycle
The evaporator 21 of TRT 2, is exchanged heat, during blast-furnace gas pressure it is constant, temperature is set according to organic Rankine bottoming cycle
Meter needs are designed, while should meet the limitation of the inlet temperature of multistage compressor installation 3.Exchanged heat by evaporator 21
Organic working medium, it is changed into the organic working medium gas of HTHP from initial low temperature liquid working medium, is carried out into expansion turbine 22
Acting, driving generator 23 is generated electricity, while the HTHP organic working medium Jing Guo expansion turbine 22 is changed into low temperature again
Liquid organic working medium, heat transfer process is carried out again into evaporator 21.
Meet that the pressure for entering the gas combustion-gas vapor combined cycle device 4 will in the outlet of multistage compressor installation 3
Ask, while blast furnace gas temperature is also improved, high temperature, the blast furnace gas of high pressure can further improve the combustion and steam
The efficiency of combined cycle generating unit 4.Second generator 42 of gas combustion-gas vapor combined cycle device 4 can also be multistage pressure
Contracting machine device 3 provides driving power, can further improve energy conversion efficiency, and reduce equipment investment simultaneously.Equally, You Jilang
The generator 23 for agreeing circulation electric generating apparatus 2 can also be that multistage compressor installation 3 provides driving power, or otherwise utilized.
The multistage compressor installation 3 includes at least two compressors 31, is provided between each two compressor 31 between level
Heat exchanger 32, the coal gas that heat exchanger 32 is discharged to compressor 31 between level cool.The coal gas to be pressurizeed by upper level enters level
Between heat exchanger 32 cooled, then enter back into next stage compressor and be pressurized, so as to greatly improve next stage compressor effect
Rate.The working medium entrances of heat exchanger 32 connect with the working medium entrances of the evaporator 21 between the level, heat exchanger 32 between the level
Sender property outlet connects with the sender property outlet of the evaporator 21 so that heat exchanger 32 can be together with evaporator 21 to be organic between level
The organic working medium heat exchange circulated in Rankine cycle TRT 2, improves heat exchange efficiency.The heat energy that heat exchanger 32 exchanges between the level
The organic working medium that can make to circulate in organic Rankine bottoming cycle TRT 2 carries out phase transformation, by low temperature and low pressure liquid organic working medium phase transformation
For in the evaporator 21 in the gaseous organic matter of HTHP, with organic Rankine bottoming cycle TRT 2 via low-temp low-pressure
Liquid organic working medium is mutually changed into high pressure gaseous organic working medium and converged, common to drive expansion turbine 22, generator 23
Generated electricity by the driving of expansion turbine 22.
The blast furnace gas recycling system of the present invention, by using organic Rankine bottoming cycle TRT 2, by HTHP
Blast furnace gas carry out heat transfer process, cooled by the blast furnace gas of heat exchange, but its pressure does not reduce.In this shape
Blast furnace gas under state, for multistage compressor installation 3 it is in very high compression efficiency, improves the whole of compressor
Body efficiency.Simultaneously as compressor can heat up in compression process to blast furnace gas, heat exchanger 32 is to having heated up between level
Blast furnace gas cooled, after the whole efficiency for improving compressor, final compressor is without aftercooler, by last compression
The blast furnace gas of machine final stage compression is changed into the condition of high temperature again, while pressure also meets gas combustion-gas vapor combined cycle device
4 inlet pressure requirements.The raising of inlet temperature, it can greatly improve the efficiency of gas combustion-gas vapor combined cycle device 4.
Above embodiment is only the illustrative embodiments of the present invention, it is impossible to be used in limits the present invention, the present invention
Protection domain be defined by the claims.Those skilled in the art can be in the essence and protection domain of the present invention, to this
Various modifications or equivalent substitution are made in invention, and these modifications or equivalent substitution also should be regarded as being within the scope of the present invention.
Claims (3)
1. a kind of blast furnace gas recycling system, it is characterised in that sent out including dry type exhaust dust device with bag, organic Rankine bottoming cycle
Electric installation, multistage compressor installation and gas combustion-gas vapor combined cycle device,
The organic Rankine bottoming cycle TRT includes evaporator, expansion turbine and generator, and the working medium of the evaporator enters
Mouth and the sender property outlet of the expansion turbine pass through pipeline communication, the sender property outlet of the evaporator and the expansion turbine
Working medium entrances pass through pipeline communication, the generator connects the output end of the expansion turbine；
The dry type exhaust dust device with bag, evaporator, multistage compressor installation and gas combustion-gas vapor combined cycle device pass through
Pipeline is sequentially connected.
2. blast furnace gas recycling system as claimed in claim 1, it is characterised in that the multistage compressor installation includes
At least two compressors, heat exchanger between level is provided between each two compressor.
3. blast furnace gas recycling system as claimed in claim 2, it is characterised in that the working medium of heat exchanger enters between the level
Mouth connects with the working medium entrances of the evaporator, and the sender property outlet of the sender property outlet of heat exchanger and the evaporator connects between the level
It is logical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697669.XA CN106048118B (en) | 2016-08-19 | 2016-08-19 | blast furnace gas recycling system |
| PCT/CN2017/097461 WO2018033056A1 (en) | 2016-08-19 | 2017-08-15 | Blast furnace gas recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697669.XA CN106048118B (en) | 2016-08-19 | 2016-08-19 | blast furnace gas recycling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106048118A CN106048118A (en) | 2016-10-26 |
| CN106048118B true CN106048118B (en) | 2018-02-27 |
Family
ID=57194894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610697669.XA Active CN106048118B (en) | 2016-08-19 | 2016-08-19 | blast furnace gas recycling system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106048118B (en) |
| WO (1) | WO2018033056A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048118B (en) * | 2016-08-19 | 2018-02-27 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | blast furnace gas recycling system |
| CN108343482A (en) * | 2018-04-18 | 2018-07-31 | 北京华清微拓节能技术股份公司 | Birotor expanding machine is connected the device for generating power by waste heat of organic Rankine cycle expansion machine |
| CN109653821A (en) * | 2018-12-31 | 2019-04-19 | 浙能资本控股有限公司 | Vertical sintering waste heat driving water vapour and Organic Rankine Cycle train |
| CN113864000B (en) * | 2021-09-22 | 2023-09-26 | 鑫磊压缩机股份有限公司 | Rankine cycle power generation system |
| CN116949240B (en) * | 2023-09-14 | 2024-03-19 | 北京瑞达宏信科技有限公司 | Converter primary flue gas full dry dedusting, energy full recovery and CO zero emission system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390757Y (en) * | 2009-01-07 | 2010-01-27 | 陕西博尔透平机械有限公司 | Recycling system of blast furnace gas excess pressure and heat energy |
| CN101906998A (en) * | 2009-07-31 | 2010-12-08 | 王世英 | Multi-cycle electricity-generation thermodynamic system and implementing method thereof |
| CN102703628A (en) * | 2012-06-13 | 2012-10-03 | 北京首钢国际工程技术有限公司 | Use method for circulating comprehensive utilization device for blast furnace gas |
| CN205893294U (en) * | 2016-08-19 | 2017-01-18 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | Top gas recovery utilizes system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304595B (en) * | 2011-09-23 | 2013-10-30 | 中冶南方工程技术有限公司 | Top gas pressure recovery turbine generating system |
| WO2014000882A2 (en) * | 2012-06-28 | 2014-01-03 | Linde Aktiengesellschaft | Process and apparatus for generating electric energy |
| CN103161607A (en) * | 2013-03-04 | 2013-06-19 | 西安交通大学 | Combined power generating system based on waste-heat utilization of combustion motor |
| CN203362239U (en) * | 2013-07-10 | 2013-12-25 | 北京奥福能源股份有限公司 | Blast-furnace gas TRT power generating and steam boiler combined power generating device |
| CN106048118B (en) * | 2016-08-19 | 2018-02-27 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | blast furnace gas recycling system |
-
2016
- 2016-08-19 CN CN201610697669.XA patent/CN106048118B/en active Active
-
2017
- 2017-08-15 WO PCT/CN2017/097461 patent/WO2018033056A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390757Y (en) * | 2009-01-07 | 2010-01-27 | 陕西博尔透平机械有限公司 | Recycling system of blast furnace gas excess pressure and heat energy |
| CN101906998A (en) * | 2009-07-31 | 2010-12-08 | 王世英 | Multi-cycle electricity-generation thermodynamic system and implementing method thereof |
| CN102703628A (en) * | 2012-06-13 | 2012-10-03 | 北京首钢国际工程技术有限公司 | Use method for circulating comprehensive utilization device for blast furnace gas |
| CN205893294U (en) * | 2016-08-19 | 2017-01-18 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | Top gas recovery utilizes system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018033056A1 (en) | 2018-02-22 |
| CN106048118A (en) | 2016-10-26 |
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