CN102728140A - Geothermal tail water recharging system - Google Patents
Geothermal tail water recharging system Download PDFInfo
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- CN102728140A CN102728140A CN2012102489780A CN201210248978A CN102728140A CN 102728140 A CN102728140 A CN 102728140A CN 2012102489780 A CN2012102489780 A CN 2012102489780A CN 201210248978 A CN201210248978 A CN 201210248978A CN 102728140 A CN102728140 A CN 102728140A
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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
Abstract
The invention discloses a geothermal tail water recharging system which comprises a floater treatment and filter device (1), a solid particle filter device and a nitrogen protection device (4), wherein geothermal water extracted from a geothermal well is sent into a recharge well (6) by a pipeline pump (5) after being subjected to thermal extraction by a thermal extraction device. The geothermal tail water recharging system is characterized in that a geothermal tail water treatment system is arranged between the thermal extraction device and the pipeline pump (5), and the geothermal well, a plate type heat exchanger, the geothermal tail water treatment system and the recharge well (6) form a closed circulation system. With the adoption of the system, the geothermal recharging quantity is greatly increased, and the geothermal recharge duration time is greatly prolonged, so that the system is an effective measure for ensuring circulation and sustainable development of geothermal resources and has important significance for protecting the geothermal resources, reducing resource waste, prolonging the service life of a production well, reducing environmental pollution and the like.
Description
Technical field
The present invention relates to a kind of underground heat exploitation and utilize system, especially a kind of underground heat exploitation utilizes the underground heat tail water recharge system of system.Underground heat tail water is meant the GEOTHERMAL WATER behind the extraction heat energy.It is with the GEOTHERMAL WATER behind the extraction heat energy that underground heat tail water is handled recharging technique, after filtering floating thing, filtering solid particles and rejecting bubble, through pressue device underground heat tail water is injected inverted well, is restored to a kind of special technology in the earth's crust.
Background technology
On September 12nd, 2010, how to tackle the subjects under discussion such as energy problem that challenge such as climate change and developing country face in the 21st world energy sources conference with regard to energy industry and launch to inquire into.The theming as of current session " act immediately with the reply challenge---the energy is created livable celestial body transition ".The speech exercise question of Premier Wen Jiabao's on January 16th, 2012 in world's future source of energy summit is exactly: firm green and the sustainable development path walked of China; One of speech content is: strengthen support on policy, accelerate the clean energy resource development and greatly develop regenerative resource and clean energy resource.This shows the development clean energy resource, realize that sustainable development is very urgent.
Geothermal energy is the recyclability heat energy from earth depths, and it arises from the fusion magma of the earth and the decay of radioactive substance.The circulation of phreatic depths and invade the earth's crust from the magma at profound place after, bring to nearly top layer to heat from deep under ground.Human through digging geothermal well, take geothermal energy to the face of land with the form of GEOTHERMAL WATER or water vapour and be used.At present; Obtained extensive utilization at aspects such as geothermal power generation, heating, greenhouse, breed, rehabilitation medical, extraction industrial chemicals, tourism and bottled mineral waters; Yield strengthens day by day, and the GEOTHERMAL WATER of extracting behind the heat energy mostly is discharged into the face of land, has caused thermal pollution and chemical contamination; The hydrostatic level that while has been drawn geothermal well descends year by year, if things go on like this will cause the GEOTHERMAL WATER waste and cause that GEOTHERMAL WATER is exhausted.As everyone knows, GEOTHERMAL WATER is restricted by immersible pump lift and economy as unique media of exploitation deep earth heart ability.When depth to water drops to below a certain degree of depth, the exploitation geothermal energy no longer has economic implications, and only account for ten thousand of hot reservoir whole heat storage capacities/several with the heat energy that utilizes this moment.For realizing the sustainable development of clean energy resource, must turn back to the GEOTHERMAL WATER behind the extraction heat energy in the earth's crust.
Extract in various degree contaminated of GEOTHERMAL WATER behind the heat energy, can not directly recharge." geothermal energy resources geologic prospect standard " (GB/T11615-2010) in clear and definite regulation: geothermal reinjection adopts unpolluted raw water recharging, must not recharge heat storage is polluted.In addition, contaminated underground heat tail water usually stops up the passage that recharges of inverted well, causes the amount of recharging to fall sharply or loses water recharge capacity.So the processing of underground heat tail water is very necessary.And underground heat tail water to handle recharging technique be development clean energy resource (geothermal energy), realize the important safeguard measure of clean energy resource sustainable development, therefore research, promoting underground heat tail water, to handle recharging technique extremely urgent, imperative.
Summary of the invention
Technical problem to be solved by this invention provides the underground heat tail water recharge system that a kind of underground heat exploitation utilizes system.
The technical scheme that the present invention solves its technical problem is:
Underground heat tail water recharge system; Form by floating thing processing filter, solid particle filter, nitrogen protection device; Adopting the heat back from the GEOTHERMAL WATER of geothermal well extraction through heat-collecting device sends into the inverted well with tubing pump; Between heat-collecting device and tubing pump, be provided with underground heat tail water treatment system, geothermal well, plate type heat exchanger, underground heat tail water treatment system and inverted well constitute closed cycle system.
Concrete technical scheme is: described underground heat tail water treatment system is handled filter, solid particle filter and nitrogen protection device by floating thing and is constituted; The solid particle filter comprises solid particle coarse filtration device that can filter the above solid particle of 0.1mm and the solid particle fine filtering device that can filter 0.1-0.03mm solid particle; Solid particle coarse filtration device is before solid particle fine filtering device; Solid particle coarse filtration device is connected through pipeline with solid particle fine filtering device; Handle at floating thing and being connected between filter and the solid particle coarse filtration device to be provided with second pipeline valve on the pipeline; Being connected between solid particle fine filtering device and nitrogen protection device is provided with the 3rd pipeline valve on the pipeline; Being connected between nitrogen protection device and tubing pump is provided with the 4th pipeline valve on the pipeline, lead at tubing pump on the pipeline of inverted well to be provided with reverse stop valve.
As a kind of preferred version of the present invention; It is the storage tank that inwall is handled through plastic-blasting that described floating thing is handled filter; On the sidewall of storage tank, be provided with water inlet, floating thing outlet and subsequent use floating thing outlet, water inlet is connected with the water return pipeline of heat-collecting device through first pipeline valve, and the floating thing outlet is provided with the floating thing discharge valve; On subsequent use floating thing outlet, be provided with subsequent use floating thing discharge valve; On the roof of storage tank, be provided with air bleeding valve, it is the quartz conglomerate of 50-100mm that the half chests granularity is arranged in storage tank, and described water inlet is below waterline and near waterline; Described floating thing outlet is near waterline, and described subsequent use floating thing outlet is more than waterline.
As another preferred version of the present invention; Described first pipeline valve and second pipeline valve are electromagnetic valve; Second pipeline valve is closed through time relay control realization batch (-type); Described floating thing discharge valve and subsequent use floating thing discharge valve are pressure-control valve; The pressure of subsequent use floating thing discharge valve is greater than the pressure of floating thing discharge valve, described floating thing handle between filter and the solid particle coarse filtration device be connected the link position of pipeline on storage tank in the bottom of tank wall near the case bottom.
As another preferred version of the present invention, the opening pressure of floating thing discharge valve is 0.5MPa, and the opening pressure of subsequent use floating thing discharge valve is 0.8MPa.
As another preferred version of the present invention, described solid particle coarse filtration device is a hydrocyclone, and described solid particle fine filtering device is Johnson's filter.
As another preferred version of the present invention, described solid particle coarse filtration device is a 1-n hydrocyclone arranged side by side, and described solid particle fine filtering device is 1-n Johnson's filter arranged side by side.
As another preferred version of the present invention, described nitrogen protection device is the ultrasonic bubble flush trimmer.
Operating procedure of the present invention: the GEOTHERMAL WATER from geothermal well is released can not directly be utilized, must the heat exchange utilization.Its circulation pattern is: geothermal well---plate type heat exchanger---water return pipeline---underground heat tail water treatment system---inverted well.It is underground to that is to say that GEOTHERMAL WATER is restored to through inverted well after geothermal well is exploited out by heat exchange again, is in all the time in the closed cycle system.Geothermal well, plate type heat exchanger and heating equipment are in same pump house; And geothermal well apart from inverted well about 1000 meters; Handle the 1000 mitron line selections of recharging the equipment from plate type heat exchanger to underground heat tail water and use glass reinforced plastic pipe, between mineral element in the minimizing GEOTHERMAL WATER and the conveyance conduit chemical reaction and scale formation take place.Be that underground heat tail water is handled the equipment that recharges between glass reinforced plastic pipe and the inverted well.Underground heat tail water at first gets into floating thing and handles filter, and all floater cleanings in the water are come out; Get into solid particle coarse filtration and fine filtering device again, the coarse filtration device can filter diameter at the solid particle more than 0.1 millimeter, and fine filter can filter 0.1-0.03 millimeter particle; Get into nitrogen protection device (ultrasonic bubble flush trimmer) again extremely; Be injected in the inverted well by tubing pump at last.The power of flowing through in the water treatment procedure is provided by the negative pressure that tubing pump produces.
Application notice:
1. circulatory system sealing is tight;
2. recharging pressure must not be greater than 0.35MP.
Know-why:
1. floating thing processing filter can come out all floater cleanings in the water; Its operation principle is: underground heat tail water flows into the storage tank (processing of inwall plastic-blasting) that floating thing is handled filter through electromagnetic valve A1; Float to the waterline place on the floating thing nature, the underground heat tail water that does not contain floating thing gets into solid particle coarse filtration device through valve A2 after quartz conglomerate filters.Electromagnetic valve A2 is that batch (-type) is closed (time condenser control), and valve B1 and B2 are that pressure control is opened, and valve B1 opening pressure is 0.5MPa, and valve B2 opening pressure is 0.8MPa.After valve A2 closes; The storage tank internal pressure rises, and when pressure surpassed 0.5MPa, valve B1 opened and discharges the underground heat tail water that floating thing is arranged; If valve B1 opens the underground heat tail water that can not in time discharge floating thing; The storage tank internal pressure will continue to rise this moment, and when pressure surpassed 0.8MPa, valve B2 opened and in time discharges the underground heat tail water that floating thing is arranged.By the time when the time was set, valve A2 opened, the storage tank internal pressure descends, and valve B2 and B1 close successively, removes floating thing work and accomplishes.
2. the solid particle filter utilizes hydrocyclone and Johnson's filter to accomplish jointly.
2.1. solid particle coarse filtration device utilizes hydrocyclone to accomplish.Handle the size of the water yield as required, can be 1---n hydrocyclone parallel operation.The filtering accuracy of hydrocyclone is the above solid particle of 0.1mm.
2.2. solid particle fine filtering device utilizes Johnson's filter to accomplish.Handle the size of the water yield as required, can be 1---n Johnson's filter is installed on the water tank side by side and uses.The filtering accuracy of Johnson's filter is 0.1---the solid particle of 0.03mm.
3. nitrogen protection device (ultrasonic bubble flush trimmer).
The invention has the beneficial effects as follows:
This technological popularization will improve the geothermal reinjection amount greatly and prolong the geothermal reinjection duration; Be the effective measure that guarantees geothermal energy resources circulation, sustainable exploitation, all significant for the aspects such as protection, the minimizing wasting of resources, prolongation producing well life-span and minimizing environmental pollution of geothermal energy resources.One is recharged underground heat tail water geothermal reinjection engineering year and calculates by 43.2 ten thousand m3, and 1000 are recharged underground heat tail water 43,200 ten thousand m3 geothermal reinjection engineering year, is equivalent to store 860,000 tons of mark coals.
Description of drawings
Fig. 1 is a systematic schematic diagram of the present invention;
Fig. 2 be among Fig. 1 A-A to partial sectional view;
C2, C3 are vent valve among Fig. 1, and D1, D2 are blowoff valve.
The specific embodiment
As shown in the figure; 1. underground heat tail water recharge system; Form by floating thing processing filter 1, solid particle filter, nitrogen protection device 4; Adopt the heat back from the GEOTHERMAL WATER of geothermal well extraction through heat-collecting device and send into the inverted well 6 with tubing pump 5, between heat-collecting device and tubing pump 5, be provided with underground heat tail water treatment system, geothermal well, plate type heat exchanger, underground heat tail water treatment system and inverted well 5 constitute closed cycle systems.
Described underground heat tail water treatment system is handled filter 1, solid particle filter and nitrogen protection device 4 by floating thing and is constituted; The solid particle filter comprises solid particle coarse filtration device 2 that can filter the above solid particle of 0.1mm and the solid particle fine filtering device 3 that can filter 0.1-0.03mm solid particle; Solid particle coarse filtration device 2 is before solid particle fine filtering device 3; Solid particle coarse filtration device 2 and solid particle fine filtering device 3 are connected through pipeline; Handle at floating thing and being connected between filter 1 and the solid particle coarse filtration device 2 to be provided with the second pipeline valve A2 on the pipeline; Being connected between solid particle fine filtering device 3 and nitrogen protection device 4 is provided with the 3rd pipeline valve A3 on the pipeline; Being connected between nitrogen protection device 4 and tubing pump 5 is provided with the 4th pipeline valve A4 on the pipeline, lead at tubing pump 5 on the pipeline of inverted well 6 to be provided with reverse stop valve E1.
Described floating thing is handled the storage tank that filter 1 is handled through plastic-blasting for inwall; On the sidewall of storage tank, be provided with water inlet, floating thing outlet and subsequent use floating thing outlet; Water inlet is connected with the water return pipeline of heat-collecting device through the first pipeline valve A1; The floating thing outlet is provided with floating thing discharge valve B1, on subsequent use floating thing outlet, is provided with subsequent use floating thing discharge valve B2, on the roof of storage tank, is provided with air bleeding valve C1; It is the quartz conglomerate of 50-100mm that the half chests granularity is arranged in storage tank; Described water inlet is below waterline and near waterline, and described floating thing outlet is near waterline, and described subsequent use floating thing outlet is more than waterline.
The described first pipeline valve A1 and the second pipeline valve A2 are electromagnetic valve; The second pipeline valve A2 closes through time relay control realization batch (-type); Described floating thing discharge valve B1 and subsequent use floating thing discharge valve B2 are pressure-control valve; The pressure of subsequent use floating thing discharge valve B2 is greater than the pressure of floating thing discharge valve B1, described floating thing handle between filter 1 and the solid particle coarse filtration device 2 be connected the link position of pipeline on storage tank in the bottom of tank wall near the case bottom.
The opening pressure of floating thing discharge valve B1 is 0.5MPa, and the opening pressure of subsequent use floating thing discharge valve B2 is 0.8MPa.
Described solid particle coarse filtration device 2 is a hydrocyclone, and described solid particle fine filtering device 3 is Johnson's filter.
Described solid particle coarse filtration device 2 is a 1-n hydrocyclone arranged side by side, and described solid particle fine filtering device 3 is 1-n Johnson's filter arranged side by side.
Described nitrogen protection device 4 is the ultrasonic bubble flush trimmer.
Claims (8)
1. underground heat tail water recharge system; Form by floating thing processing filter (1), solid particle filter, nitrogen protection device (4); Adopting the heat back from the GEOTHERMAL WATER of geothermal well extraction through heat-collecting device sends into the inverted well (6) with tubing pump (5); It is characterized in that, between heat-collecting device and tubing pump (5), be provided with underground heat tail water treatment system, geothermal well, plate type heat exchanger, underground heat tail water treatment system and inverted well (5) constitute closed cycle system.
2. underground heat tail water recharge system according to claim 1; It is characterized in that; Described underground heat tail water treatment system is handled filter (1), solid particle filter and nitrogen protection device (4) by floating thing and is constituted; The solid particle filter comprises solid particle coarse filtration device (2) that can filter the above solid particle of 0.1mm and the solid particle fine filtering device (3) that can filter 0.1-0.03mm solid particle; Solid particle coarse filtration device (2) at solid particle fine filtering device (3) before; Solid particle coarse filtration device (2) is connected through pipeline with solid particle fine filtering device (3); Handle at floating thing and being connected between filter (1) and the solid particle coarse filtration device (2) to be provided with second pipeline valve (A2) on the pipeline; Being connected between solid particle fine filtering device (3) and nitrogen protection device (4) is provided with the 3rd pipeline valve (A3) on the pipeline, being connected between nitrogen protection device (4) and tubing pump (5) is provided with the 4th pipeline valve (A4) on the pipeline, leads at tubing pump (5) on the pipeline of inverted well (6) to be provided with reverse stop valve (E1).
3. underground heat tail water recharge system according to claim 2; It is characterized in that described floating thing is handled the storage tank that filter (1) is handled through plastic-blasting for inwall, on the sidewall of storage tank, is provided with water inlet, floating thing outlet and subsequent use floating thing outlet; Water inlet is connected with the water return pipeline of heat-collecting device through first pipeline valve (A1); The floating thing outlet is provided with floating thing discharge valve (B1), on subsequent use floating thing outlet, is provided with subsequent use floating thing discharge valve (B2), on the roof of storage tank, is provided with air bleeding valve (C1); It is the quartz conglomerate of 50-100mm that the half chests granularity is arranged in storage tank; Described water inlet is below waterline and near waterline, and described floating thing outlet is near waterline, and described subsequent use floating thing outlet is more than waterline.
4. underground heat tail water recharge system according to claim 3; It is characterized in that; Described first pipeline valve (A1) and second pipeline valve (A2) are electromagnetic valve; Second pipeline valve (A2) is closed through time relay control realization batch (-type); Described floating thing discharge valve (B1) and subsequent use floating thing discharge valve (B2) are pressure-control valve, and the pressure of subsequent use floating thing discharge valve (B2) is greater than the pressure of floating thing discharge valve (B1), described floating thing handle between filter (1) and the solid particle coarse filtration device (2) be connected the link position of pipeline on storage tank in the bottom of tank wall near the case bottom.
5. underground heat tail water recharge system according to claim 4 is characterized in that the opening pressure of floating thing discharge valve (B1) is 0.5MPa, and the opening pressure of subsequent use floating thing discharge valve (B2) is 0.8MPa.
6. underground heat tail water recharge system according to claim 2 is characterized in that described solid particle coarse filtration device (2) is a hydrocyclone, and described solid particle fine filtering device (3) is Johnson's filter.
7. underground heat tail water recharge system according to claim 2; It is characterized in that; Described solid particle coarse filtration device (2) is a 1-n hydrocyclone arranged side by side, and described solid particle fine filtering device (3) is 1-n Johnson's filter arranged side by side.
8. underground heat tail water recharge system according to claim 2 is characterized in that described nitrogen protection device (4) is the ultrasonic bubble flush trimmer.
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| CN201210248978.0A CN102728140B (en) | 2012-07-18 | 2012-07-18 | Geothermal tail water recharging system |
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| CN201210248978.0A CN102728140B (en) | 2012-07-18 | 2012-07-18 | Geothermal tail water recharging system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290829A (en) * | 2013-05-13 | 2013-09-11 | 秦作栋 | Method for improving groundwater recharging efficiency by utilizing fluctuating waterflow |
| CN107191143A (en) * | 2017-06-23 | 2017-09-22 | 天津世纪天源集团股份有限公司 | Lower filling well device and production practice are adopted in one kind |
| CN109595836A (en) * | 2018-12-12 | 2019-04-09 | 湖南达道新能源开发有限公司 | A kind of device reducing underground heat rock and chemistry of aqueous solution reactant |
| CN109694140A (en) * | 2017-10-23 | 2019-04-30 | 天津滨海瑞诚地热科技开发有限公司 | A kind of pore type geothermal tail water recharge processing equipment and the recharge system using it |
| CN112413914A (en) * | 2020-11-25 | 2021-02-26 | 河北绿源地热能开发有限公司 | Negative-pressure-free geothermal recharging system and recharging method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290829A (en) * | 2013-05-13 | 2013-09-11 | 秦作栋 | Method for improving groundwater recharging efficiency by utilizing fluctuating waterflow |
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| CN107191143A (en) * | 2017-06-23 | 2017-09-22 | 天津世纪天源集团股份有限公司 | Lower filling well device and production practice are adopted in one kind |
| CN107191143B (en) * | 2017-06-23 | 2024-02-06 | 天津世纪天源集团股份有限公司 | Well device for up-production and down-filling and exploitation process |
| CN109694140A (en) * | 2017-10-23 | 2019-04-30 | 天津滨海瑞诚地热科技开发有限公司 | A kind of pore type geothermal tail water recharge processing equipment and the recharge system using it |
| CN109595836A (en) * | 2018-12-12 | 2019-04-09 | 湖南达道新能源开发有限公司 | A kind of device reducing underground heat rock and chemistry of aqueous solution reactant |
| CN109595836B (en) * | 2018-12-12 | 2020-07-07 | 湖南达道新能源开发有限公司 | Device for reducing chemical reactants of geothermal rock and aqueous solution |
| CN112413914A (en) * | 2020-11-25 | 2021-02-26 | 河北绿源地热能开发有限公司 | Negative-pressure-free geothermal recharging system and recharging method |
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| CN102728140B (en) | 2014-07-09 |
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Denomination of invention: Geothermal tail water recharge system Effective date of registration: 20220920 Granted publication date: 20140709 Pledgee: Guangping County Rural Credit Cooperative Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: Y2022130000073 |
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Address after: 057651 North side of the middle section of Jin Guangyuan Road, Guangping County, Handan City, Hebei Province Patentee after: Hebei Weiye Geothermal New Energy Technology Co.,Ltd. Address before: 056200 South of Renmin Road East Section, Guangping County, Handan City, Hebei Province Patentee before: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. |