CN104653417A - Dry-hot-rock geothermal power generation system using ammonia as intermediate medium - Google Patents
Dry-hot-rock geothermal power generation system using ammonia as intermediate medium Download PDFInfo
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- CN104653417A CN104653417A CN201510079241.4A CN201510079241A CN104653417A CN 104653417 A CN104653417 A CN 104653417A CN 201510079241 A CN201510079241 A CN 201510079241A CN 104653417 A CN104653417 A CN 104653417A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention relates to a dry-hot-rock geothermal power generation system using ammonia as an intermediate medium. One or a plurality of groups of sealed underground dry-hot-rock metal heat exchangers are arranged in an underground dry-hot-rock drill hole, internal circulation water required for heat exchange is injected in each underground dry-hot-rock metal heat exchanger, a water outlet pipeline of each underground dry-hot-rock metal heat exchanger is connected with an evaporator through a circulation pump, a water outlet pipe of the evaporator is connected to the corresponding underground dry-hot-rock metal heat exchanger, the ammonia medium is contained in the evaporator, the ammonia medium in the evaporator is connected with a steam turbine through a narrowing pipeline, the steam turbine is connected with a power generator, the ammonia medium in the steam turbine is connected with a high-pressure condenser, and an ammonia outlet of the high-pressure condenser is connected with the evaporator through a pressurizing pump. The dry-hot-rock geothermal power generation system has the advantages that the number and the depth of the heat exchangers can be determined according to the power generation load values, the heat exchangers adopt a fully sealed circulation system, the application range is wide, green and environment-friendly effects are achieved, the power generation benefits are obvious, water resources are protected, the efficiency is high, the energy is saved, the service life of the system is long, and safety and reliability are realized.
Description
Technical field
The present invention relates to xeothermic rock stratum underground heat heat-exchange system and power generation system, especially relate to the dry-hot-rock geothermal power generation system that intermediate medium is ammonia.
Technical background
The heat energy of earth interior is referred to as geothermal power, it is the energy that the thermonuclear reaction of earth interior long-lived radioisotope produces, it is the ubiquitous new cleaning fuel of earth interior, reserves are huge, pollution-free, not by the impact of the conditions such as terrestrial climate, globally heat resource total amount, is equivalent to 450,000 times of present global resources total flow.
Propose with just showing great foresight " underground is a large heat reservoir, is that the mankind open up one of natural energy resources newly source, just as the mankind find that coal, oil can burn " as far back as Ministry of Geology minister Professor Li Siguang in 1970.And most geothermal power is all stored in rock, be called hot dry rock.
According to preresearch estimates: China's hot dry rock within the scope of the 2000m-4000m of underground, main high heat flow province about 1,900,000 km
2.The heat stored is equivalent to 51.6 trillion tons of standard coals.
Summary of the invention
The object of this invention is to provide one and can not get geothermal water, can local use geothermal power generation and improve generating capacity and reduce the dry-hot-rock geothermal power generation system that the intermediate medium of power consumption is ammonia.
The object of the invention is to be achieved through the following technical solutions: a kind of intermediate medium is the dry-hot-rock geothermal power generation system of ammonia, comprise steam turbine (1), generator (2), high pressure condenser (3), compression pump (5), underground hot dry rock metallic recuperator (6), vaporizer (7), recycle pump (8) and the pipeline that narrows (9), one or more groups airtight underground hot dry rock metallic recuperator (6) is provided with in the hot dry rock boring of underground, good required heat exchange inner loop water is filled in underground hot dry rock metallic recuperator (6), underground hot dry rock metallic recuperator (6) outlet pipe is connected to vaporizer (7) by recycle pump (8), vaporizer (7) outlet pipe is connected to underground hot dry rock metallic recuperator (6), vaporizer is provided with ammonia solution in (7), vaporizer (7) interior ammonia solution connects steam turbine (1) by the pipeline that narrows (9), steam turbine (1) connects generator (2), the interior ammonia solution of steam turbine (1) connects high pressure condenser (3), the ammonia solution outlet of high pressure condenser (3) connects vaporizer (7) through compression pump (5), cooling water (4) connects high pressure condenser (3).
The quantity of described underground hot dry rock metallic recuperator (6) is determined according to generation load amount.
Hot dry rock generation technology refers to by rig to the xeothermic rockhole of underground certain depth, a kind of airtight metallic recuperator is installed in the borehole, heat transferring medium is full of interior, to be derived by the heat energy of subterranean depth by heat exchanger conduction and be used for heating ammonia working medium, ammonia working medium is heated the new technology of vaporization pushing turbine work done drive electrical generators.In order to the feature of this new technology outstanding, to come with the geothermal water difference that generates electricity, be the dry-hot-rock geothermal power generation system of ammonia by this new technology called after intermediate medium.
The present invention has the following advantages:
(1) the present invention can determine quantity and the degree of depth of heat exchanger according to the size of generation load, ensures that underground heat exchange system has enough exchange capability of heat to meet the needs of generation load.
(2) heat exchanger adopts closed circulating system, and to deep under ground 2000-5000m mounting heat exchanger, by Tube Sheet of Heat Exchanger outer wall and surrounding xeothermic rock stratum heat exchange, not pumping underground hot water, closes heat-obtaining, avoids geothermal water generating scale problems.
(3) the present invention fundamentally solves the middle low-temperature electricity-generating difficult problem not extracting geothermal water, achieves the object generally utilizing high, medium and low three warm hot dry rock heat energy power-generatings.
(4) widely applicable, without the need to extracting geothermal water, cryogenic fluid can be utilized to generate electricity in hot more rich area more.
(5) environmental protection, energy is from underground heat, and power benefit is remarkable.
(6) water conservation.The present invention is while utilizing geothermal power generation, and no longer pumping underground hot water, by means of only exchanger tube wall and high-temperature rock stratum heat exchange, maintains the long-lasting of geothermal power generation and stability.
(7) energy-efficient.Heat exchanger of the present invention improves underground heat absorption conductive efficiency.The environmental protection more while efficiency power generation of ammonia environmental protection working medium.
(8) lifetime of system is long.Ground heat exchanger adopts the manufacture of J55 special steel material, and corrosion-resistant, high temperature resistant, high pressure resistant, the life-span is suitable with building life.
(9) safe and reliable.Aperture (200 ~ 500 millimeters), underground movement-less part, utilizes underground high temperature heat source generating, system stability.
(10) low to the structural requirement of whole heat-exchange system, in underground, deep layer heat-obtaining, increase single hole heat-obtaining amount, increase generating capacity, boring number can be reduced, reduce development cost.Therefore whole system cost is low, is easy to promote.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
A kind of intermediate medium is the dry-hot-rock geothermal power generation system of ammonia, comprise steam turbine 1, generator 2, high pressure condenser 3, cooling water 4, compression pump 5, underground hot dry rock heat exchanger 6, vaporizer 7, pump 8, narrow pipeline 9, one or more groups airtight underground hot dry rock metallic recuperator 6 is provided with in the hot dry rock boring of underground, fill good required heat exchange inner loop water in underground hot dry rock metallic recuperator 6, the quantity of underground hot dry rock metallic recuperator 6 is determined according to generation load amount.Underground hot dry rock metallic recuperator 6 outlet pipe is connected to vaporizer 7 by recycle pump 8, vaporizer 7 outlet pipe is connected to underground hot dry rock metallic recuperator 6, ammonia solution is provided with in vaporizer 7, in vaporizer 7, ammonia solution enters steam turbine 1 by the pipeline 9 that narrows, steam turbine 1 is communicated to generator 2, ammonia solution in steam turbine 1 enters high pressure condenser 3, and the ammonia solution outlet of high pressure condenser 3 enters vaporizer 7 through compression pump 5.Cooling water 4 connects high pressure condenser 3.
When the present invention runs, ON cycle pump 8, vaporizer 7 is entered after the inner loop water absorption underground heat of underground hot dry rock metallic recuperator 6, heating ammonia solution, becomes high temperature and high pressure steam, by entering steam turbine 1 expansion working after the pipeline 9 that narrows after ammonia solution heat absorption, pushing turbine 1 drive electrical generators 2 generates electricity to building, ammonia evaporation after work done enters high pressure condenser 3, and cooled ammoniacal liquor gets back to vaporizer 7 through compression pump 5, completes power generation cycle.
Claims (2)
1. an intermediate medium is the dry-hot-rock geothermal power generation system of ammonia, comprise steam turbine (1), generator (2), high pressure condenser (3), compression pump (5), underground hot dry rock metallic recuperator (6), vaporizer (7), recycle pump (8) and the pipeline that narrows (9), it is characterized in that: in the boring of underground hot dry rock, be provided with one or more groups airtight underground hot dry rock metallic recuperator (6), good required heat exchange inner loop water is filled in underground hot dry rock metallic recuperator (6), underground hot dry rock metallic recuperator (6) outlet pipe is connected to vaporizer (7) by recycle pump (8), vaporizer (7) outlet pipe is connected to underground hot dry rock metallic recuperator (6), vaporizer is provided with ammonia solution in (7), vaporizer (7) interior ammonia solution connects steam turbine (1) by the pipeline that narrows (9), steam turbine (1) connects generator (2), the interior ammonia solution of steam turbine (1) connects high pressure condenser (3), the ammonia solution outlet of high pressure condenser (3) connects vaporizer (7) through compression pump (5), cooling water (4) connects high pressure condenser (3).
2. intermediate medium is as is described in the claims the dry-hot-rock geothermal power generation system of ammonia, it is characterized in that: the quantity of described underground hot dry rock metallic recuperator (6) is determined according to generation load amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510079241.4A CN104653417A (en) | 2015-02-13 | 2015-02-13 | Dry-hot-rock geothermal power generation system using ammonia as intermediate medium |
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| CN201510079241.4A CN104653417A (en) | 2015-02-13 | 2015-02-13 | Dry-hot-rock geothermal power generation system using ammonia as intermediate medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885385A (en) * | 2017-03-24 | 2017-06-23 | 东晨干热岩热力有限公司 | Individual well hot dry rock heat energy extraction system |
| CN106949648A (en) * | 2017-04-17 | 2017-07-14 | 山西泰杰地能干热岩有限公司 | Ground energy hot dry rock heat-exchanger rig monitoring system and its heat exchange monitoring method |
| CN107762749A (en) * | 2017-10-20 | 2018-03-06 | 中国地质大学（武汉） | Low temperature geothermal power generation plant in a kind of distribution |
| CN110425099A (en) * | 2019-08-26 | 2019-11-08 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of hot dry rock photo-thermal coupled electricity-generation system and its control method with heat storage function |
| CN112412717A (en) * | 2020-12-09 | 2021-02-26 | 四川大学 | Multi-zone composite in-situ geothermal power generation system |
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| CN201909484U (en) * | 2011-01-05 | 2011-07-27 | 徐毅 | Aqueous ammonia-applicable system for obtaining heat from medium-temperature and low-temperature geothermal wells |
| CN202215446U (en) * | 2011-09-06 | 2012-05-09 | 徐毅 | System using media with low boiling point in middle-low-temperature geothermal well to obtain heat |
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| CN203949406U (en) * | 2014-07-03 | 2014-11-19 | 李建峰 | Hot dry rock mono-potency lithium bromide absorption type heat pump heat distribution system |
| CN204511790U (en) * | 2015-02-13 | 2015-07-29 | 李建峰 | Intermediate medium is the dry-hot-rock geothermal power generation system of ammonia |
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2015
- 2015-02-13 CN CN201510079241.4A patent/CN104653417A/en active Pending
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| CN1186910A (en) * | 1997-11-10 | 1998-07-08 | 童成双 | Gas solution adsorption geothermal power generation |
| CN101319828A (en) * | 2008-07-01 | 2008-12-10 | 西安交通大学 | Absorption type refrigeration and power combined circulating system |
| CN201909484U (en) * | 2011-01-05 | 2011-07-27 | 徐毅 | Aqueous ammonia-applicable system for obtaining heat from medium-temperature and low-temperature geothermal wells |
| US8572967B1 (en) * | 2011-01-11 | 2013-11-05 | David H. Cowden | High efficiency OTEC system |
| CN202215446U (en) * | 2011-09-06 | 2012-05-09 | 徐毅 | System using media with low boiling point in middle-low-temperature geothermal well to obtain heat |
| CN203880988U (en) * | 2014-05-07 | 2014-10-15 | 李建峰 | Deep dry heat rock stratum geotherm combined heat exchange system |
| CN104075485A (en) * | 2014-07-03 | 2014-10-01 | 李建峰 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
| CN203949406U (en) * | 2014-07-03 | 2014-11-19 | 李建峰 | Hot dry rock mono-potency lithium bromide absorption type heat pump heat distribution system |
| CN204511790U (en) * | 2015-02-13 | 2015-07-29 | 李建峰 | Intermediate medium is the dry-hot-rock geothermal power generation system of ammonia |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885385A (en) * | 2017-03-24 | 2017-06-23 | 东晨干热岩热力有限公司 | Individual well hot dry rock heat energy extraction system |
| CN106885385B (en) * | 2017-03-24 | 2019-03-22 | 东晨干热岩热力有限公司 | Individual well hot dry rock thermal energy extraction system |
| CN106949648A (en) * | 2017-04-17 | 2017-07-14 | 山西泰杰地能干热岩有限公司 | Ground energy hot dry rock heat-exchanger rig monitoring system and its heat exchange monitoring method |
| CN106949648B (en) * | 2017-04-17 | 2023-04-25 | 山西泰杰地能干热岩有限公司 | Monitoring system and heat exchange monitoring method for geothermal dry-hot rock heat exchange device |
| CN107762749A (en) * | 2017-10-20 | 2018-03-06 | 中国地质大学（武汉） | Low temperature geothermal power generation plant in a kind of distribution |
| CN110425099A (en) * | 2019-08-26 | 2019-11-08 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of hot dry rock photo-thermal coupled electricity-generation system and its control method with heat storage function |
| CN110425099B (en) * | 2019-08-26 | 2024-02-06 | 中国电力工程顾问集团西北电力设计院有限公司 | Dry-hot rock photo-thermal coupling power generation system with heat storage function and control method thereof |
| CN112412717A (en) * | 2020-12-09 | 2021-02-26 | 四川大学 | Multi-zone composite in-situ geothermal power generation system |
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Effective date of registration: 20160418 Address after: 710065 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 34 Changan square 1 unit 1 building 11901, room 12001 Applicant after: Shaanxi Sijichun Clean Heat Source Co., Ltd. Address before: 710000, No. 71, Daxing Daxing Road, Daxing County, Lianhu District, Lianhu District, Lianhu District, Shaanxi, Xi'an, 4, China Applicant before: Li Jianfeng |
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Application publication date: 20150527 |