CN103243189A - System and method for using burnt gas heat source of blast-furnace hot blast stove for TRT (blast-furnace top gas recovery turbine unit) power generation - Google Patents
System and method for using burnt gas heat source of blast-furnace hot blast stove for TRT (blast-furnace top gas recovery turbine unit) power generation Download PDFInfo
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- CN103243189A CN103243189A CN2013101420320A CN201310142032A CN103243189A CN 103243189 A CN103243189 A CN 103243189A CN 2013101420320 A CN2013101420320 A CN 2013101420320A CN 201310142032 A CN201310142032 A CN 201310142032A CN 103243189 A CN103243189 A CN 103243189A
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- 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
Abstract
The invention relates to a system and a method for using burnt gas heat source of a blast-furnace hot blast stove for TRT (blast-furnace top gas recovery turbine unit) power generation. The system mainly comprises an ammonia water working medium circulation system, an ammonia water turbine, and a coal gas turbine and a power generator of a blast-furnace TRT system, wherein the ammonia water turbine, the coal gas turbine and the power generator are coaxially arranged and coaxially run; and the burnt gas of the blast-furnace hot blast stove is used as a heat source to heat liquid-state ammonia water into high-temperature and high-pressure gas-state ammonia water, the high-temperature and high-pressure gas-state ammonia water pushes the ammonia water turbine which is coaxial with the coal gas turbine and the power generator of the blast-furnace TRT system to rotate, and the power generator is used for generating power. In this way, only the capacities of the power generator of the blast-furnace TRT system, an excitation system and other Internet-enabled devices need to be improved instead of independent investment, thus greatly reducing initial investment cost, and running and maintenance costs.
Description
Technical field
The present invention relates to a kind of system and method that utilizes of blast furnace and hot blast cupola combustion waste gas thermal source, being specifically related to a kind of is Top pressure Recovery Turbine unit with blast furnace and hot blast cupola combustion waste gas thermal source for the TRT(full name, Chinese is translated into furnace roof (surplus) and pushes back the receipts turbine, the general more definite blast-furnace top gas recovery recovery gas turbine generating set that is referred to as) system and method for generating.
Background technology
Blast furnace and hot blast cupola combustion waste gas is large-minded, contains bigger heat energy.But because temperature is lower, the thermal source grade is low, and how to utilize efficiently is a difficult problem.Adopt the electricity-generating method of Rankine cycle electricity-generating method or ammonia-water mixture circulation, all may since generating efficiency low cause to drop into be difficult to reclaim or problem that payback period is long.
Blast-furnace top gas recovery recovery gas turbine generating set is a kind of energy saver that blast furnace gas is used to reclaim generating, but to utilize thermal source also only be to come from blast furnace gas for it, also do not relate at present for other thermals source in the blast furnace ironmaking process.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defective that overcomes prior art, provide a kind of blast furnace and hot blast cupola combustion waste gas thermal source to be used for the system and method for TRT generating, can reclaim blast furnace and hot blast cupola combustion waste gas thermal source expeditiously with existing TRT power generation assembly, do not need sole investment to build power generation system, significantly reduce initial investment cost and operation expense.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of blast furnace and hot blast cupola combustion waste gas thermal source is used for the method for TRT generating, it is characterized in that: with blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into the ammoniacal liquor turbine and is promoted the rotation of ammoniacal liquor turbine, the coal gas turbine of ammoniacal liquor turbine and blast furnace TRT system and generator coaxle setting, ammoniacal liquor turbine and coal gas turbine drive generator operation jointly, and by generator for electricity generation.
By technique scheme, blast furnace and hot blast cupola combustion waste gas is heated into liquid ammoniacal liquor by the ammonia-water mixture recycle system gaseous state ammoniacal liquor of High Temperature High Pressure as the thermal source input ammonia-water mixture recycle system; In the described ammonia-water mixture recycle system aqua ammonia pump, cooling system and heat-exchange system are set, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure by heat exchange, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system is sent into the ammoniacal liquor turbine, promotes the rotation of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of discharging from the ammoniacal liquor turbine are cooled to liquid ammoniacal liquor through cooling system, send into the gaseous state ammoniacal liquor that heat-exchange system is heated into High Temperature High Pressure by the aqua ammonia pump supercharging again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again promotes the rotation of ammoniacal liquor turbine in the ammoniacal liquor turbine.
By technique scheme, send into the hotblast stove chimney from the Combustion of Hot Air Furnace waste gas that the ammonia-water mixture recycle system is discharged.
By technique scheme, described coal gas turbine is imported the high pressure gas from the blast furnace furnace roof, and the low-pressure gas of discharging is outputed to the purified gas pipe network.
A kind of blast furnace and hot blast cupola combustion waste gas thermal source is used for the system of TRT generating, it is characterized in that: mainly comprise coal gas turbine and the generator of the ammonia-water mixture recycle system, ammoniacal liquor turbine and blast furnace TRT system, and ammoniacal liquor turbine, coal gas turbine and generator coaxle setting and coaxial operation;
Aqua ammonia pump, cooling system and heat-exchange system are set in the ammonia-water mixture recycle system; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in the heat-exchange system, the entrance end of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of hotblast stove high-temperature flue gas, and exit end is communicated with the hotblast stove chimney; The entrance end of high pressure aqua ammonia passage is communicated with the exit end of aqua ammonia pump, and the exit end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in the cooling system, the entrance end of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine, and the exit end of low pressure ammoniacal liquor passage is communicated with the entrance end of aqua ammonia pump.
By technique scheme, described coal gas turbine input terminus is communicated with the high pressure gas pipeline of blast furnace furnace roof, and output terminal is communicated with the purified gas pipe network.
By technique scheme, the feed-water end of cooling water circulation passage and backwater end all are communicated with the exterior cooling tower.
Core of the present invention is: coal gas turbine and the generator coaxle setting of ammoniacal liquor turbine and blast furnace TRT system, ammoniacal liquor turbine and coal gas turbine drive generator jointly and rotate generating, be not limited to use the ammoniacal liquor turbine in this scheme, can realize technology of the present invention as the turbine installation of working medium such as employing water, freonll-11 or coal gas turbine and the generator coaxle setting of other forms of energy conversion device and blast furnace TRT system; The thermal source of heat-exchange system also is not limited to the useless flue gas of blast funnace hot blast stove, and other high-temperature flue gas too can.
Principle of work of the present invention is: with blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure promotes to rotate with the coal gas turbine of blast furnace TRT system and the ammoniacal liquor turbine of generator coaxle, and by generator for electricity generation.Like this, owing to can utilize existing coal gas turbine for blast furnace TRT system, only need the ability of generator, field system and other equipment for surfing the net of increasing blast furnace TRT system, do not need sole investment, significantly reduce initial investment cost and operation expense, input weak point payback period.
Simultaneously, blast furnace and hot blast cupola combustion waste gas comprehensively advances same power generation system with blast furnace and hot blast cupola combustion waste gas and blast-furnace top gas recovery, thereby has simplified system architecture with blast furnace TRT cogeneration, and improved the inconvenience that each energy utilization system is set separately, thereby efficiency of energy utilization is higher.
Description of drawings
Fig. 1 is system architecture and the process flow sheet that blast furnace and hot blast cupola combustion waste gas thermal source of the present invention is used for the TRT generating.。
Embodiment
The invention will be further described below in conjunction with accompanying drawing 1 and embodiment, but do not limit the present invention.
A kind of blast furnace and hot blast cupola combustion waste gas thermal source is used for the method for TRT generating as shown in Figure 1, it is characterized in that: with blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into ammoniacal liquor turbine 3 and is promoted 3 rotations of ammoniacal liquor turbine, coal gas turbine 2 and the generator 4 coaxial settings of ammoniacal liquor turbine 3 and blast furnace TRT system, ammoniacal liquor turbine 3 and coal gas turbine 2 be common to be driven generators 4 runnings and generates electricity.
By technique scheme, blast furnace and hot blast cupola combustion waste gas as the thermal source input ammonia-water mixture recycle system 1, is heated into liquid ammoniacal liquor by the ammonia-water mixture recycle system 1 the gaseous state ammoniacal liquor of High Temperature High Pressure; Aqua ammonia pump 1.2, cooling system 1.1 and heat-exchange system 1.3 are set in the described ammonia-water mixture recycle system 1, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system 1.3, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure by heat exchange, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system 1.3 is sent into the ammoniacal liquor turbine 3, promotes 3 rotations of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of discharging from ammoniacal liquor turbine 3 are cooled to liquid ammoniacal liquor through cooling system 1.1, send into the gaseous state ammoniacal liquor that heat-exchange system 1.3 is heated into High Temperature High Pressure by aqua ammonia pump 1.2 superchargings again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again promotes 3 rotations of ammoniacal liquor turbine in the ammoniacal liquor turbine 3.
By technique scheme, send into the hotblast stove chimney from the Combustion of Hot Air Furnace waste gas that the ammonia-water mixture recycle system 1 is discharged.
By technique scheme, described coal gas turbine 2 inputs are from the high pressure gas of blast furnace furnace roof, and the low-pressure gas of discharging is outputed to the purified gas pipe network.
Blast furnace and hot blast cupola combustion waste gas thermal source as shown in Figure 1 is used for the system of TRT generating for realizing a kind of mode of technology of the present invention.The coal gas turbine 2 and the generator 4 that mainly comprise the ammonia-water mixture recycle system 1, ammoniacal liquor turbine 3, blast furnace TRT system, and ammoniacal liquor turbine 3, coal gas turbine 2 and generator 4 coaxial settings and coaxial operation;
Aqua ammonia pump 1.2, cooling system 1.1 and heat-exchange system 1.3 are set in the ammonia-water mixture recycle system 1; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in the heat-exchange system 1.3, the entrance end of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of hotblast stove high-temperature flue gas, and exit end is communicated with the hotblast stove chimney; The entrance end of high pressure aqua ammonia passage is communicated with the exit end of aqua ammonia pump 1.2, and the exit end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine 3; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in the cooling system 1.1, the entrance end of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine 3, and the exit end of low pressure ammoniacal liquor passage is communicated with the entrance end of aqua ammonia pump 1.2.
By technique scheme, the feed-water end of cooling water circulation passage and backwater end all are communicated with the exterior cooling tower.
Described coal gas turbine 2 input terminuss are communicated with the high pressure gas pipeline of blast furnace furnace roof, and output terminal is communicated with the purified gas pipe network.
Core of the present invention is: coal gas turbine and the generator coaxle setting of ammoniacal liquor turbine and blast furnace TRT system, ammoniacal liquor turbine and coal gas turbine drive generator jointly and rotate generating, be not limited to use the ammoniacal liquor turbine, can realize technology of the present invention as the turbine installation of working medium such as employing water, freonll-11 or coal gas turbine and the generator coaxle setting of other forms of energy conversion device and blast furnace TRT system; The thermal source of heat-exchange system also is not limited to the useless flue gas of blast funnace hot blast stove, and other high-temperature flue gas too can.
Principle of work of the present invention is: with blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure promotes to rotate with the coal gas turbine of blast furnace TRT system and the ammoniacal liquor turbine of generator coaxle, and by generator for electricity generation.Like this, owing to can utilize existing coal gas turbine for blast furnace TRT system, only need the ability of generator, field system and other equipment for surfing the net of increasing blast furnace TRT system, do not need sole investment, significantly reduce initial investment cost and operation expense, input weak point payback period.
Simultaneously, blast furnace and hot blast cupola combustion waste gas comprehensively advances same power generation system with blast furnace and hot blast cupola combustion waste gas and blast-furnace top gas recovery, thereby has simplified system architecture with blast furnace TRT cogeneration, and improved the inconvenience that each energy utilization system is set separately, thereby efficiency of energy utilization is higher.
Claims (7)
1. a blast furnace and hot blast cupola combustion waste gas thermal source is used for the method that TRT generates electricity, it is characterized in that: with blast furnace and hot blast cupola combustion waste gas as thermal source, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent into the ammoniacal liquor turbine and is promoted the rotation of ammoniacal liquor turbine, the coal gas turbine of ammoniacal liquor turbine and blast furnace TRT system and generator coaxle setting, ammoniacal liquor turbine and coal gas turbine drive generator operation jointly, and by generator for electricity generation.
2. method according to claim 1 is characterized in that: blast furnace and hot blast cupola combustion waste gas is heated into liquid ammoniacal liquor by the ammonia-water mixture recycle system gaseous state ammoniacal liquor of High Temperature High Pressure as the thermal source input ammonia-water mixture recycle system; In the described ammonia-water mixture recycle system aqua ammonia pump, cooling system and heat-exchange system are set, blast furnace and hot blast cupola combustion waste gas enters heat-exchange system, liquid ammoniacal liquor is heated into the gaseous state ammoniacal liquor of High Temperature High Pressure by heat exchange, the gaseous state ammoniacal liquor of the High Temperature High Pressure of discharging from heat-exchange system is sent into the ammoniacal liquor turbine, promotes the rotation of ammoniacal liquor turbine; Low-pressure low-temperature ammoniacal liquor and the weary ammonia of discharging from the ammoniacal liquor turbine are cooled to liquid ammoniacal liquor through cooling system, send into the gaseous state ammoniacal liquor that heat-exchange system is heated into High Temperature High Pressure by the aqua ammonia pump supercharging again, the gaseous state ammoniacal liquor of High Temperature High Pressure is sent to again promotes the rotation of ammoniacal liquor turbine in the ammoniacal liquor turbine.
3. method according to claim 2 is characterized in that: send into the hotblast stove chimney from the Combustion of Hot Air Furnace waste gas that the ammonia-water mixture recycle system is discharged.
4. according to the described method of one of claim 1-3, it is characterized in that: described coal gas turbine is imported the high pressure gas from the blast furnace furnace roof, and the low-pressure gas of discharging is outputed to the purified gas pipe network.
5. a blast furnace and hot blast cupola combustion waste gas thermal source is used for the system that TRT generates electricity, it is characterized in that: comprise coal gas turbine and the generator of the ammonia-water mixture recycle system, ammoniacal liquor turbine and blast furnace TRT system, and ammoniacal liquor turbine, coal gas turbine and generator coaxle setting and coaxial operation;
Aqua ammonia pump, cooling system and heat-exchange system are set in the ammonia-water mixture recycle system; Blast furnace and hot blast cupola combustion exhaust gas recirculation passage and high pressure aqua ammonia channel parallel in the heat-exchange system, the entrance end of blast furnace and hot blast cupola combustion exhaust gas recirculation passage is communicated with the outlet of hotblast stove high-temperature flue gas, and exit end is communicated with the hotblast stove chimney; The entrance end of high pressure aqua ammonia passage is communicated with the exit end of aqua ammonia pump, and the exit end of high pressure aqua ammonia passage is connected with the ammoniacal liquor import of ammoniacal liquor turbine; Cooling water circulation passage and low pressure ammoniacal liquor channel parallel in the cooling system, the entrance end of low pressure ammoniacal liquor passage is connected with the outlet of the ammoniacal liquor of ammoniacal liquor turbine, and the exit end of low pressure ammoniacal liquor passage is communicated with the entrance end of aqua ammonia pump.
6. system according to claim 5, it is characterized in that: described coal gas turbine input terminus is communicated with the high pressure gas pipeline of blast furnace furnace roof, and output terminal is communicated with the purified gas pipe network.
7. according to claim 5 or 6 described systems, it is characterized in that: the feed-water end of cooling water circulation passage and backwater end all are communicated with the exterior cooling tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101420320A CN103243189A (en) | 2013-04-23 | 2013-04-23 | System and method for using burnt gas heat source of blast-furnace hot blast stove for TRT (blast-furnace top gas recovery turbine unit) power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101420320A CN103243189A (en) | 2013-04-23 | 2013-04-23 | System and method for using burnt gas heat source of blast-furnace hot blast stove for TRT (blast-furnace top gas recovery turbine unit) power generation |
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| CN103243189A true CN103243189A (en) | 2013-08-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866070A (en) * | 2014-04-09 | 2014-06-18 | 陕西三沅重工发展股份有限公司 | Low-grade waste heat recycling system and method for flue gas of hot blast stove |
| CN106839516A (en) * | 2017-02-16 | 2017-06-13 | 中节能城市节能研究院有限公司 | A kind of coal gasification CO2Carrier gas energy conserving system |
| CN108165691A (en) * | 2018-02-11 | 2018-06-15 | 浦江县科创进出口有限公司 | A kind of blast furnace gas excess pressure energy recovering device |
| US10626750B2 (en) | 2016-12-09 | 2020-04-21 | Ecolab Usa Inc. | Top-pressure recovery turbine deposition control |
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| CN1163981A (en) * | 1996-01-24 | 1997-11-05 | 株式会社荏原制作所 | Combined-cycle power generation sytem using waste matter as fuel |
| CN102536345A (en) * | 2012-01-13 | 2012-07-04 | 杭州哲达科技股份有限公司 | Method for increasing running energy efficiency of BPRT (blast furnace power recovery turbine) system |
| CN102606237A (en) * | 2012-03-06 | 2012-07-25 | 广东电网公司电力科学研究院 | Open forward and inverse cycle coupling triple supply system of electricity, heat and cold based on combustion gas turbine |
| CN203295538U (en) * | 2013-04-23 | 2013-11-20 | 中冶南方工程技术有限公司 | System for TRT (top pressure recovery turbine unit) electricity generation by blast furnace hot blast stove combustion exhaust gas heat source |
-
2013
- 2013-04-23 CN CN2013101420320A patent/CN103243189A/en active Pending
Patent Citations (4)
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| CN1163981A (en) * | 1996-01-24 | 1997-11-05 | 株式会社荏原制作所 | Combined-cycle power generation sytem using waste matter as fuel |
| CN102536345A (en) * | 2012-01-13 | 2012-07-04 | 杭州哲达科技股份有限公司 | Method for increasing running energy efficiency of BPRT (blast furnace power recovery turbine) system |
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| CN203295538U (en) * | 2013-04-23 | 2013-11-20 | 中冶南方工程技术有限公司 | System for TRT (top pressure recovery turbine unit) electricity generation by blast furnace hot blast stove combustion exhaust gas heat source |
Non-Patent Citations (1)
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| 盖东兴等: ""中低温余热发电技术"", 《2012年全国冶金安全环保暨能效优化学术交流会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866070A (en) * | 2014-04-09 | 2014-06-18 | 陕西三沅重工发展股份有限公司 | Low-grade waste heat recycling system and method for flue gas of hot blast stove |
| US10626750B2 (en) | 2016-12-09 | 2020-04-21 | Ecolab Usa Inc. | Top-pressure recovery turbine deposition control |
| CN106839516A (en) * | 2017-02-16 | 2017-06-13 | 中节能城市节能研究院有限公司 | A kind of coal gasification CO2Carrier gas energy conserving system |
| CN108165691A (en) * | 2018-02-11 | 2018-06-15 | 浦江县科创进出口有限公司 | A kind of blast furnace gas excess pressure energy recovering device |
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Application publication date: 20130814 |