CN105298567B - The industrial exhaust heat using supercritical carbon dioxide working medium utilizes system - Google Patents
The industrial exhaust heat using supercritical carbon dioxide working medium utilizes system Download PDFInfo
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- CN105298567B CN105298567B CN201510802774.0A CN201510802774A CN105298567B CN 105298567 B CN105298567 B CN 105298567B CN 201510802774 A CN201510802774 A CN 201510802774A CN 105298567 B CN105298567 B CN 105298567B
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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 discloses a kind of industrial exhaust heat using supercritical carbon dioxide working medium and utilize system, main technique thermal source: the gas with industrial exhaust heat or liquid are provided；Flue gas heat-exchange unit for heat exchange；Classification in-line combined-circulation loop: include the first electromotor, drive the first turbine of the first electrical power generators, first regenerator, second regenerator, cooler, compressor, second electromotor and the second turbine of drive the second electrical power generators, second heat exchanger secondary side exports through the first turbine, first regenerator high temperature side, second regenerator high temperature side, connect with compressor after cooler, the outlet of compressor connects with the second heat exchanger secondary side entrance and the second regenerator low temperature side respectively, second regenerator low temperature side is through the first regenerator low temperature side, after second turbine, the high temperature side entrance with the second regenerator connects.Industrial exhaust heat of the present invention utilizes system can be effectively improved industrial exhaust heat utilization ratio and reduce cost of investment.
Description
Technical field
The present invention relates to field of waste heat utilization, in particular it relates to more than a kind of industry using supercritical carbon dioxide working medium
Heat utilization system.
Background technology
Waste heat refers to the energy not being used effectively in utilization of energy system or equipment.According to statistics, the waste heat of every profession and trade is total
Resource accounts for the 17%-67% of its fuel consumption total amount, and the residual heat resources of recoverable are about the 60% of waste heat total resources.Electric power,
There is the discharge of substantial amounts of high-temp waste gas in the industries such as metallurgy, chemical industry, weaving, cement, is reclaimed the waste heat in high-temp waste gas
Utilization is to reduce energy consumption, the important measures of energy-saving and emission-reduction.
UTILIZATION OF VESIDUAL HEAT IN is generally divided into for heat and generating power two kinds, and cogeneration at present typically uses waste heat boiler, utilizes useless
Water in gas heating waste heat boiler produces steam, is realized by the conversion of heat energy to electric energy by Rankine cycle.Industrial heat resources is most
Discharge is high-temp waste gas, but Rankine cycle at high temperature efficiency is unsatisfactory, and system complex, equipment is many, volume is big, invests
Relatively costly, investment is long for return period, limits the enthusiasm of enterprise investment waste heat utilization equipment.
Summary of the invention
The present invention provides a kind of industrial exhaust heat to utilize system, solves that current industrial exhaust heat utilization ratio is low, cost of investment is high
Technical problem.
The present invention solves the problems referred to above and be the technical scheme is that
The industrial exhaust heat using supercritical carbon dioxide working medium utilizes system, including
Main technique thermal source: the gas with industrial exhaust heat or liquid are provided；
Flue gas heat-exchange unit: for the industrial exhaust heat and the supercritical dioxy in combined-circulation loop that produce for main technique thermal source
Change carbon working medium and carry out heat exchange；
Classification in-line combined-circulation loop: include the first turbine, the first electromotor, the first regenerator, the second backheat
Device, cooler, compressor, the second turbine and the second electromotor；The entrance of described first turbine and described flue gas heat-exchange unit
Secondary side outlet is connected, and the outlet of described first turbine is connected with the high temperature side entrance of described first regenerator, and described the
The outfan of one turbine is connected with the input of described first electromotor, the high temperature side of described first regenerator outlet and described the
The high temperature side entrance of two regenerators is connected, and the high temperature side outlet of described second regenerator is connected with the entrance of described cooler
Logical, the outlet of described cooler is connected with the entrance of described compressor, and the outlet of described compressor is changed with described flue gas respectively
The secondary side entrance of hot device and the low temperature side entrance of described second regenerator are connected, the low temperature side outlet of described second regenerator
It is connected with the low temperature side entrance of described first regenerator, low temperature side outlet and described second turbine of described first regenerator
Entrance is connected, and the outlet of described second turbine is connected with the high temperature side entrance of described second regenerator, described second turbine
Outfan be connected with the input of described second electromotor, and the working medium in this combined-circulation loop is supercritical titanium dioxide
Carbon.
Further, described main technique thermal source is the various industrial equipments that can produce industrial exhaust heat.
Further, described main technique thermal source is thermal power station's boiler, diesel engine, gas turbine, converter or coke oven.
Further, described flue gas heat-exchange unit is arranged in described main technique thermal source, the band that described main technique thermal source produces
The gas or the liquid that have industrial exhaust heat enter from the primary side entrance of described flue gas heat-exchange unit and enter in described flue gas heat-exchange unit
Export from the primary side of described flue gas heat-exchange unit after row heat exchange and discharge.
Further, described flue gas heat-exchange unit is high voltage bearing compact plate type heat exchanger.
Further, described industrial exhaust heat utilize system also to include desulfurizer, described desulfurizer change with described flue gas
The primary side of hot device is connected.
Further, described industrial exhaust heat utilize system also to include denitrification apparatus, described denitrification apparatus change with described flue gas
The primary side of hot device is connected.
Further, described industrial exhaust heat utilizes system also to include thermophore, the entrance of described thermophore and described flue gas
The secondary side outlet of heat exchanger is connected, and the outlet of described thermophore is connected with the entrance of described first turbine.
To sum up, the invention has the beneficial effects as follows: industrial exhaust heat of the present invention utilizes system according to the spy of industrial exhaust heat
Point, designs described classification in-line combined-circulation loop, it is possible to preferably mate the temperature parameter scope of all types of industries waste heat,
Improving 5%-10% than currently employed waste heat boiler steam-electric power efficiency, occupation area of equipment reduces 20%-60%, cost of investment
Reducing 25%-50%, invest and shorten more than half return period, economic competitiveness is substantially improved.
Accompanying drawing explanation
Fig. 1 is the structural representation that the industrial exhaust heat shown in present pre-ferred embodiments utilizes system；
Labelling and corresponding parts title in accompanying drawing: industrial exhaust heat utilizes system 100, main technique thermal source 10, flue gas to change
Hot device the 20, first turbine the 30, first electromotor the 31, first regenerator the 40, second regenerator 50, cooler 60, compressor 70,
Two turbine the 80, second electromotors 81.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment 1
Referring to Fig. 1, the industrial exhaust heat shown in present pre-ferred embodiments utilizes system 100, including main technique thermal source 10,
Flue gas heat-exchange unit the 20, first turbine the 30, first electromotor the 31, first regenerator the 40, second regenerator 50, cooler 60, calm the anger
Machine the 70, second turbine 80 and the second electromotor 81.
Described main technique thermal source 10 is the various industrial equipments that can produce industrial exhaust heat, as being various industrial application
Heating furnace or heat-producing device, can be more specifically thermal power station's boiler, diesel engine, gas turbine, converter, coke oven etc..
Described flue gas heat-exchange unit 20 is arranged in described main technique thermal source 10, described main technique thermal source 10 produce with work
Gas or the liquid of amateurish heat enter from the primary side entrance of described flue gas heat-exchange unit 20 and enter in described flue gas heat-exchange unit 20
Export from the primary side of described flue gas heat-exchange unit 20 after row heat exchange and discharge.In the present embodiment, described flue gas heat-exchange unit 20 is preferred
High voltage bearing compact plate type heat exchanger.
The entrance of described first turbine 30 exports with the secondary side of described flue gas heat-exchange unit 20 and is connected, described first turbine
The outlet of 30 is connected with the high temperature side entrance of described first regenerator 40, the outfan and described first of described first turbine 30
The input of electromotor 31 is connected.The high temperature side outlet of described first regenerator 40 enters with the high temperature side of described second regenerator 50
Mouth is connected, and the high temperature side outlet of described second regenerator 50 is connected with the entrance of described cooler 60, described cooler 60
Outlet be connected with the entrance of described compressor 70, the outlet of described compressor 70 respectively with the two of described flue gas heat-exchange unit 20
The low temperature side entrance of secondary side entrance and described second regenerator 50 is connected, the low temperature side outlet of described second regenerator 50 and institute
The low temperature side entrance stating the first regenerator 40 is connected, low temperature side outlet and described second turbine 80 of described first regenerator 40
Entrance be connected, the outlet of described second turbine 80 is connected with the high temperature side entrance of described second regenerator 50, described
The outfan of two turbines 80 is connected with the input of described second electromotor 81.So, with the secondary of described flue gas heat-exchange unit 20
Each equipment that side is connected forms a classification in-line combined-circulation loop.And the working medium in this loop is supercritical titanium dioxide
Carbon.In the present embodiment, the cooling medium of described cooler 60 is water or air.
Described main technique thermal source 10 produces the gas with industrial exhaust heat or liquid, through described flue gas heat-exchange unit 20 by heat
Amount passes to the supercritical carbon dioxide working medium of described flue gas heat-exchange unit 20 secondary side, absorbs the supercritical carbon dioxide after heat
Enter in described first turbine 30, promote described first turbine 30 to rotate, thus drive described first electromotor 31 to generate electricity, for outward
Boundary's system provides the electric power of cleaning.Described first regenerator 40 is passed sequentially through still in supercritical carbon dioxide after acting
With the high temperature side of the second regenerator 50, after entrance cooler 60 discharges used heat, then it is divided into two-way after compressor 70 boosts, a road
Entering flue gas heat-exchange unit 20, another road flows separately through the first regenerator 40 and low temperature side of the second regenerator 50, by the first backheat
After the high temperature side medium heating of device 40 and the second regenerator 50, enter the second turbine 80, promote the second turbine 80 to rotate, drive the
Two electromotors 81 generate electricity, and the carbon dioxide after acting enters the high temperature side recirculation circulation of the second regenerator 50.
It is appreciated that and utilizes system 100 can also include desulfurizer and/or denitrification apparatus by described industrial exhaust heat (figure is not
Show), described desulfurizer and/or denitrification apparatus are connected with the primary side of described flue gas heat-exchange unit 20, described main technique thermal source
10 gases produced or liquid first through desulfurization and/or out of stock after heat exchange discharge again, or first through heat exchange again through desulfurization and/or de-
Discharge after pin, to meet environmental requirement.
It is appreciated that described industrial exhaust heat utilizes system 100 can also include thermophore (not shown), meets batch (-type) master
The demand that the efficient waste heat of technique thermal source utilizes, the entrance of described thermophore exports phase with the secondary side of described flue gas heat-exchange unit 20
Connection, the outlet of described thermophore is connected with the entrance of described first turbine 30.
To sum up, industrial exhaust heat of the present invention utilizes system 100, uses supercritical carbon dioxide working medium to divide with shown
The in-line combined-circulation loop of level carries out the conversion of energy, improves than currently employed waste heat boiler steam-electric power efficiency
5%-10%, occupation area of equipment can reduce 20%-60%, and cost of investment can reduce 25%-50%, invests and can shorten half return period
Above, economic competitiveness is substantially improved.
As it has been described above, the present invention can preferably be realized.
The above, be only presently preferred embodiments of the present invention, the present invention not makees any pro forma restriction, depends on
Any simple amendment according to the technical spirit of the present invention, within the spirit and principles in the present invention, above example made,
Equivalent and improvement etc., within all still falling within the protection domain of technical solution of the present invention.
Claims (8)
1. use the industrial exhaust heat of supercritical carbon dioxide working medium to utilize system, it is characterised in that to include
Main technique thermal source: the gas with industrial exhaust heat or liquid are provided；
Flue gas heat-exchange unit: for the industrial exhaust heat and the supercritical carbon dioxide in combined-circulation loop that produce for main technique thermal source
Working medium carries out heat exchange；
Classification in-line combined-circulation loop: include the first turbine, the first electromotor, the first regenerator, the second regenerator, cold
But device, compressor, the second turbine and the second electromotor；The entrance of described first turbine and the secondary side of described flue gas heat-exchange unit
Outlet is connected, and the outlet of described first turbine is connected with the high temperature side entrance of described first regenerator, described first turbine
Outfan be connected with the input of described first electromotor, the outlet of the high temperature side of described first regenerator and described second backheat
The high temperature side entrance of device is connected, and the high temperature side outlet of described second regenerator is connected with the entrance of described cooler, described
The outlet of cooler is connected with the entrance of described compressor, the outlet of described compressor respectively with the two of described flue gas heat-exchange unit
The low temperature side entrance of secondary side entrance and described second regenerator is connected, the low temperature side of described second regenerator outlet and described the
The low temperature side entrance of one regenerator is connected, and the low temperature side outlet of described first regenerator is connected with the entrance of described second turbine
Logical, the outlet of described second turbine is connected with the high temperature side entrance of described second regenerator, the outfan of described second turbine
It is connected with the input of described second electromotor, and the working medium in this combined-circulation loop is supercritical carbon dioxide.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described main technique thermal source is the various industrial equipments that can produce industrial exhaust heat.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described main technique thermal source is thermal power station's boiler, diesel engine, gas turbine, converter or coke oven.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described flue gas heat-exchange unit is arranged in described main technique thermal source, described main technique thermal source produce the gas with industrial exhaust heat or
Liquid enters from the primary side entrance of described flue gas heat-exchange unit and carries out in described flue gas heat-exchange unit after heat exchange from described cigarette
The primary side outlet of gas heat exchanger is discharged.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described flue gas heat-exchange unit is high voltage bearing compact plate type heat exchanger.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described industrial exhaust heat utilizes system also to include, and desulfurizer, described desulfurizer are connected with the primary side of described flue gas heat-exchange unit
Logical.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described industrial exhaust heat utilizes system also to include, and denitrification apparatus, described denitrification apparatus are connected with the primary side of described flue gas heat-exchange unit
Logical.
The industrial exhaust heat of employing supercritical carbon dioxide working medium the most according to claim 1 utilizes system, it is characterised in that
Described industrial exhaust heat utilizes system also to include, and thermophore, the entrance of described thermophore export with the secondary side of described flue gas heat-exchange unit
Being connected, the outlet of described thermophore is connected with the entrance of described first turbine.
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| CN201510802774.0A CN105298567B (en) | 2015-11-19 | 2015-11-19 | The industrial exhaust heat using supercritical carbon dioxide working medium utilizes system |
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| CN201510802774.0A CN105298567B (en) | 2015-11-19 | 2015-11-19 | The industrial exhaust heat using supercritical carbon dioxide working medium utilizes system |
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| CN105298567B true CN105298567B (en) | 2016-12-07 |
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| CN105840260A (en) * | 2016-03-24 | 2016-08-10 | 华中科技大学 | Boiler step energy using system and method |
| CN106014509A (en) * | 2016-07-28 | 2016-10-12 | 中国核动力研究设计院 | Turbine generator set adopting supercritical carbon dioxide as working medium |
| CN106089435A (en) * | 2016-07-28 | 2016-11-09 | 中国核动力研究设计院 | A kind of compressor system with supercritical carbon dioxide as working medium |
| CN107062920A (en) * | 2017-04-18 | 2017-08-18 | 长沙紫宸科技开发有限公司 | Main energy sources acquisition methods needed for cement plant supercritical carbon dioxide generates electricity |
| CN109682099A (en) * | 2017-07-10 | 2019-04-26 | 华北电力大学 | Utilize flue gas and CO2The enhancing geothermal power generation of waste heat and seal integral system up for safekeeping |
| WO2019173729A1 (en) * | 2018-03-08 | 2019-09-12 | Berry Metal Company | Waterless system and method for cooling a metallurgical processing furnace |
| CN108425710B (en) * | 2018-03-27 | 2024-01-05 | 哈尔滨电气股份有限公司 | Double-turbine supercritical carbon dioxide cyclic power generation system for flue gas grading utilization |
| CN108412563A (en) * | 2018-03-27 | 2018-08-17 | 哈尔滨电气股份有限公司 | Three turbines, three regenerator supercritical carbon dioxide cycle generating system for gas turbine waste heat recovery |
| CN108798808B (en) * | 2018-06-11 | 2021-07-23 | 山东理工大学 | CO for recovering waste heat of high-temperature flue gas２Cyclic cogeneration system |
| CN109441574B (en) * | 2018-11-02 | 2021-07-23 | 中国石油大学(华东) | Integrated coal gasification combined power generation process with near-zero carbon emission for peak regulation |
| CN109441573B (en) * | 2018-11-02 | 2021-07-23 | 中国石油大学(华东) | Zero-carbon-emission natural gas combined power generation process for peak regulation |
| CN109611171A (en) * | 2019-01-15 | 2019-04-12 | 中国石油大学(华东) | Integral coal gasification-supercritical CO of zero carbon emission2Combined cycle generating process |
| CN109681325B (en) * | 2019-01-15 | 2021-12-31 | 中国石油大学(华东) | Natural gas-supercritical CO2 combined cycle power generation process |
| CN111472857A (en) * | 2020-04-15 | 2020-07-31 | 哈电发电设备国家工程研究中心有限公司 | Energy-storable supercritical carbon dioxide turbine flow-dividing circulating industrial waste heat utilization system |
| CN112554978B (en) * | 2020-11-16 | 2023-01-17 | 中国能源建设集团山西省电力勘测设计院有限公司 | Coupling complementary method for supercritical CO2 power generation and long-distance steam transmission |
| CN113280672B (en) * | 2021-06-18 | 2022-03-04 | 电子科技大学 | Multistage low temperature waste heat recovery system based on supercritical carbon dioxide |
| CN113982714B (en) * | 2021-11-30 | 2024-02-23 | 中国华能集团清洁能源技术研究院有限公司 | Supercritical carbon dioxide power generation system utilizing geothermal energy and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103953405A (en) * | 2014-05-05 | 2014-07-30 | 碧海舟（北京）石油化工设备有限公司 | Waste heat power generation system utilizing organic Rankine cycle |
| CN204402599U (en) * | 2014-12-25 | 2015-06-17 | 陕西省电力设计院 | A kind of device utilizing blue charcoal exhaust boiler low-temperature flue gas waste heat to generate electricity |
| CN104712432A (en) * | 2015-03-13 | 2015-06-17 | 中国华电工程(集团)有限公司 | Two-stage organic Rankine cycle power generation system utilizing exhaust heat of gas turbine |
| CN205101053U (en) * | 2015-11-19 | 2016-03-23 | 中国核动力研究设计院 | Adopt industry waste heat utilization system of super supercritical carbon dioxide working medium |
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