CN106048118A - Blast furnace coal gas recovery and utilization system - Google Patents
Blast furnace coal gas recovery and utilization system Download PDFInfo
- Publication number
- CN106048118A CN106048118A CN201610697669.XA CN201610697669A CN106048118A CN 106048118 A CN106048118 A CN 106048118A CN 201610697669 A CN201610697669 A CN 201610697669A CN 106048118 A CN106048118 A CN 106048118A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- gas
- vaporizer
- expansion turbine
- working medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003034 coal gas Substances 0.000 title abstract description 10
- 238000011084 recovery Methods 0.000 title abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 71
- 239000006200 vaporizer Substances 0.000 claims description 26
- 239000000567 combustion gas Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract 4
- 239000002737 fuel gas Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 9
- 238000007906 compression Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 230000005611 electricity 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
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process 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
- 230000036772 blood pressure Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 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
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002245 particle Substances 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 present invention discloses a blast furnace coal gas recovery and utilization system, which comprises a dry type bag type dust removing device, an organic Rankine cycle power generation device, a multi-stage compressor device and a fuel gas steam combined cycle power generation device, wherein the organic Rankine cycle power generation device comprises an evaporator, an expansion turbine and an electric generator, the working substance inlet of the evaporator is communicated to the working substance outlet of the expansion turbine through a pipeline, the working substance outlet of the evaporator is communicated to the working substance inlet of the expansion turbine through a pipeline, the electric generator is connected to the output end of the expansion turbine, and the dry type bag type dust removing device, the evaporator, the multi-stage compressor device and the fuel gas steam combined cycle power generation device are sequentially connected through pipelines. According to the present invention, with the blast furnace coal gas recovery and utilization system, the temperature and the pressure of the blast furnace coal gas are completely utilized, and the recovery and utilization rate of the blast furnace coal gas is improved.
Description
Technical field
The present invention relates to blast furnace gas and reclaim field；Specifically, the present invention relates to a kind of blast furnace gas and recycle system
System.
Background technology
Blast furnace gas is the side-product produced during blast furnace ironmaking, in its main component combustible component content account for 20～
About 30%, calorific value is relatively low, and dustiness is bigger.Owing to blast furnace gas is the waste gas that in metallurgic waste gas, discharge capacity is maximum, except
Outside directly burning as the personal combustion gas of smelter, also develop many approach recycling blast furnace gas.
In these approach relatively common, blast furnace coal gas residual pressure recovery turbine power generation set (Top Gas Pressure
Recovery Turbine, TRT) it is to utilize blast furnace predetermined gas pressure energy and gas sensible heat, coal gas is imported expansion turbine pair
Outer acting, and turbine is connected with electromotor, by turbine, Gas Pressure of Blast Furnaces and partial heat energy are converted to mechanical energy
It is then converted to electric energy, constitutes blast furnace coal pneumatic jack and push back receipts turbine generator.Blast furnace gas through hydraulic recovery can also enter
Entering gas combustion-gas vapor combined cycle and carry out combustion power generation, as disclosed in patent documentation CN102703628A, a kind of blast furnace gas follows
The using method of ring comprehensive utilization device, the blast furnace gas that blast furnace roof is discharged by the method, through original blast furnace gas pipeline by
Bottom enters dry-method bag-type pulsed dust-removing device and filters；TRT decrease temperature and pressure is entered through the clean blast furnace gas pipeline of high pressure, high by low pressure
Producer gas pipeline is derived；Part blast furnace gas imports blast furnace gas pipeline through blast funnace hot blast stove and enters blast-furnace hot-air furnace apparatus, complete
Becoming heating technique, remainder enters gas combustion-gas vapor combined cycle device recovery waste heat overbottom pressure.
But using after said method carries out dry method dust, in gas, remaining granule can be on the turbine blade in TRT
Deposition, TRT equipment can be caused great potential risk, can cause equipment fluctuation of service, reduce system stability by this deposition
Property.Therefore most TRT blood pressure lowering generating equipments are required to add extra wet-scrubbing equipment in its front end to ensure TRT equipment energy
Periodically remove the deposition on blade of the impurity particle in gas.But, due to the existence of wet-scrubbing equipment, can reduce simultaneously
The temperature and pressure of blast furnace gas, this will also result in combined combustion and steam turbine power unit efficiency and reduces so that returning of blast furnace gas
Rate of producing effects reduces.
Summary 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, improves the organic efficiency of blast furnace gas.
For achieving the above object, the blast furnace gas recycling system of the present invention, including dry type exhaust dust device with bag, organic
Rankine cycle TRT, multistage compressor installation and gas combustion-gas vapor combined cycle device, described organic Rankine bottoming cycle is sent out
Electric installation includes vaporizer, expansion turbine and electromotor, the working medium entrance of described vaporizer and the work of described expansion turbine
Matter outlet is connected by pipeline with the working medium entrance of described expansion turbine by pipeline communication, the sender property outlet of described vaporizer
Logical, described electromotor connects the outfan of described expansion turbine；Described dry type exhaust dust device with bag, vaporizer, multi-stage compression
Machine and gas combustion-gas vapor combined cycle device are sequentially connected with by pipeline.
Preferably, described multistage compressor installation includes at least two compressor, is provided with level between each two compressor
Between heat exchanger.
Preferably, the working medium entrance of described inter-stage heat exchanger connects with the working medium entrance of described vaporizer, and described inter-stage changes
The sender property outlet of hot device connects with the sender property outlet of described vaporizer.
The blast furnace gas recycling system of the present invention, by using the vaporizer of organic Rankine bottoming cycle TRT to carry out
Heat exchange, keeps its pressure, and carries out supercharging intensification by multistage compressor installation, improves Combined cycle gas-steam turbine greatly and sends out
The efficiency of electric installation, the energy that vaporizer carries out heat exchange simultaneously is generated electricity by organic Rankine bottoming cycle TRT, enters 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, takes full advantage of the temperature and pressure of blast furnace gas, improves the recycling of blast furnace gas
Efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the blast furnace gas recycling system of the present invention.
Detailed description of the invention
See Fig. 1, the blast furnace gas recycling system of the present invention, follow including dry type exhaust dust device with bag 1, organic Rankine
Ring (Organic Rankine Cycle) TRT 2, multistage compressor installation 3 and gas combustion-gas vapor combined cycle device
4。
Described organic Rankine bottoming cycle TRT 2 includes vaporizer 21, expansion turbine 22 and electromotor 23, described evaporation
The working medium entrance of device 21 passes through pipeline communication, the sender property outlet of described vaporizer 21 with the sender property outlet of described expansion turbine 22
Passing through pipeline communication with the working medium entrance of described expansion turbine 22, described electromotor 23 connects the defeated of described expansion turbine 22
Go out end.
Described dry type exhaust dust device with bag 1, vaporizer 21, multistage compressor installation 3 and gas combustion-gas vapor combined cycle
Device 4 is sequentially connected with by pipeline.
Described gas combustion-gas vapor combined cycle device 4 includes Combined cycle gas-steam turbine unit 41 and is steamed by described combustion gas
The second electromotor 42 that vapour Combined Cycle Unit 41 drives is constituted, and reaches requirement parameter through multistage compressor installation 3 supercharging
The gas turbine unit that coal gas enters in Combined cycle gas-steam turbine unit 41 burns, and fully burns and produces high temperature
Flue gas, propelling gas turbine engine rotates and then generating, and the high-temperature flue gas then discharged enters follow-up steam retracting device, produces steam
Rear entrance steam turbine, drives the second electromotor 42 rotary electrification.Height through described gas combustion-gas vapor combined cycle device 4
Producer gas flue gas, through purified treatment (not shown), is discharged in air.Described gas combustion-gas vapor combined cycle device 4 is constituted
For known technology, repeat no more here.
Using the blast furnace gas recycling system of the present invention, the blast furnace gas of High Temperature High Pressure band impurity is through dry-method bag-type
The filtration of dust arrester 1, enters the vaporizer 21 of organic Rankine bottoming cycle TRT 2, blast furnace gas after the impurity contained by removal
After the cooling of vaporizer 21, pressure remains unchanged, and the blast furnace gas under this state enters multistage compressor installation 3 and increases
After pressure, enter gas combustion-gas vapor combined cycle device 4 and generate electricity.Blast furnace gas after dedusting, through organic Rankine bottoming cycle
The vaporizer 21 of TRT 2, carries out heat exchange, during blast-furnace gas pressure constant, temperature setting according to organic Rankine bottoming cycle
Meter needs are designed, and should meet the restriction of multistage compressor installation 3 inlet temperature simultaneously.Heat exchange is carried out through vaporizer 21
Organic working medium, is become the organic working medium gas of High Temperature High Pressure from initial low temperature liquid working medium, enters expansion turbine 22 and carries out
Acting, drives electromotor 23 to generate electricity, and the High Temperature High Pressure organic working medium through expansion turbine 22 becomes low temperature again simultaneously
Liquid organic working medium, enters vaporizer 21 and again carries out heat transfer process.
Outlet at multistage compressor installation 3 meets the pressure of the described gas combustion-gas vapor combined cycle device 4 of entrance and wants
Asking, blast furnace gas temperature have also been obtained lifting simultaneously, and high temperature, the blast furnace gas of high pressure can improve described combustion and steam further
The efficiency of combined cycle generating unit 4.Second electromotor 42 of gas combustion-gas vapor combined cycle device 4 can also be multistage pressure
Contracting machine 3 provides and drives power supply, can further improve energy conversion efficiency, and reduces equipment investment simultaneously.Equally, You Jilang
The electromotor 23 agreeing circulation electric generating apparatus 2 can also provide driving power supply for multistage compressor installation 3, or otherwise utilized.
Described multistage compressor installation 3 includes at least two compressor 31, is provided with inter-stage between each two compressor 31
Heat exchanger 32, the coal gas that compressor 31 is discharged by inter-stage heat exchanger 32 is lowered the temperature.Coal gas through upper level pressurization enters level
Between heat exchanger 32 lower the temperature, then enter back into next stage compressor and carry out supercharging, thus be greatly improved next stage compressor effect
Rate.The working medium entrance of described inter-stage heat exchanger 32 connects with the working medium entrance of described vaporizer 21, described inter-stage heat exchanger 32
Sender property outlet connects with the sender property outlet of described vaporizer 21 so that inter-stage heat exchanger 32 can be organic together with vaporizer 21
The organic working medium heat exchange of circulation in Rankine cycle TRT 2, improves heat exchange efficiency.The heat energy of described inter-stage heat exchanger 32 exchange
The organic working medium of circulation in organic Rankine bottoming cycle TRT 2 can be made to carry out phase transformation, by Low temperature low pressure liquid organic working medium phase transformation
For in the gaseous state organic working medium of High Temperature High Pressure, with the vaporizer 21 in organic Rankine bottoming cycle TRT 2 by low-temp low-pressure
Liquid organic working medium becomes high pressure gaseous organic working medium mutually and converges, common driving expansion turbine 22, electromotor 23
Driven by expansion turbine 22 and generate electricity.
The blast furnace gas recycling system of the present invention, by using organic Rankine bottoming cycle TRT 2, by High Temperature High Pressure
Blast furnace gas carry out heat transfer process, the blast furnace gas through heat exchange is lowered the temperature, but its pressure does not reduce.At this shape
Blast furnace gas under state, is at for multistage compressor installation 3 in the highest compression efficiency, improves the whole of compressor
Body efficiency.Simultaneously as blast furnace gas can be heated up in compression process by compressor, inter-stage heat exchanger 32 is to having heated up
Blast furnace gas lower the temperature, after improving the whole efficiency of compressor, final compressor is without aftercooler, through last compression
The blast furnace gas of machine final stage compression becomes the condition of high temperature again, and pressure also meets gas combustion-gas vapor combined cycle device simultaneously
The inlet pressure requirements of 4.The raising of inlet temperature, can improve the efficiency of gas combustion-gas vapor combined cycle device 4 greatly.
Above detailed description of the invention is only the illustrative embodiments of the present invention, it is impossible to be used for limiting the present invention, the present invention
Protection domain be defined by the claims.Those skilled in the art can be in the essence of the present invention and protection domain, to this
Various amendment or equivalent are made in invention, and these amendments or equivalent also should be regarded as being within the scope of the present invention.
Claims (3)
1. a blast furnace gas recycling system, it is characterised in that include that dry type exhaust dust device with bag, organic Rankine bottoming cycle are sent out
Electric installation, multistage compressor installation and gas combustion-gas vapor combined cycle device,
Described organic Rankine bottoming cycle TRT includes that vaporizer, expansion turbine and electromotor, the working medium of described vaporizer enter
Mouth passes through pipeline communication, the sender property outlet of described vaporizer and described expansion turbine with the sender property outlet of described expansion turbine
Working medium entrance by pipeline communication, described electromotor connects the outfan of described expansion turbine；
Described dry type exhaust dust device with bag, vaporizer, multistage compressor installation and gas combustion-gas vapor combined cycle device pass through
Pipeline is sequentially connected with.
2. blast furnace gas recycling system as claimed in claim 1, it is characterised in that described multistage compressor installation includes
At least two compressor, is provided with inter-stage heat exchanger between each two compressor.
3. blast furnace gas recycling system as claimed in claim 2, it is characterised in that the working medium of described inter-stage heat exchanger enters
Mouth connects with the working medium entrance of described vaporizer, and the sender property outlet of described inter-stage heat exchanger connects with the sender property outlet of described vaporizer
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 true CN106048118A (en) | 2016-10-26 |
| CN106048118B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018033056A1 (en) * | 2016-08-19 | 2018-02-22 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | Blast furnace gas recycling system |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114412604A (en) * | 2022-01-27 | 2022-04-29 | 哈尔滨锅炉厂有限责任公司 | Recycling system for low-grade energy of low-temperature slag of small solid particles of boiler |
| CN115614122A (en) * | 2022-09-17 | 2023-01-17 | 沈阳铝镁设计研究院有限公司 | An aluminum electrolysis flue gas waste heat utilization system and utilization method |
| 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 |
| CN118622660B (en) * | 2024-06-18 | 2025-07-25 | 国能龙源环保有限公司 | Flue gas pressurization decarbonization and energy storage system and power generation system |
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| 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 | Blast furnace gas residual pressure and thermal energy recycling system |
| 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 |
| CN104884886B (en) * | 2012-06-28 | 2016-10-05 | 林德股份公司 | For the method and apparatus producing 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 not_active Ceased
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 | Blast furnace gas residual pressure and thermal energy recycling system |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018033056A1 (en) * | 2016-08-19 | 2018-02-22 | 阿特拉斯·科普柯（上海）工艺设备有限公司 | Blast furnace gas recycling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106048118B (en) | 2018-02-27 |
| WO2018033056A1 (en) | 2018-02-22 |
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