WO2019100957A1 - Device for extracting minerals from brine by using solar energy - Google Patents

Device for extracting minerals from brine by using solar energy Download PDF

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Publication number
WO2019100957A1
WO2019100957A1 PCT/CN2018/114988 CN2018114988W WO2019100957A1 WO 2019100957 A1 WO2019100957 A1 WO 2019100957A1 CN 2018114988 W CN2018114988 W CN 2018114988W WO 2019100957 A1 WO2019100957 A1 WO 2019100957A1
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Prior art keywords
pump
heat carrier
brine
solar collector
connected
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PCT/CN2018/114988
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French (fr)
Chinese (zh)
Inventor
雷政军
翟腾飞
高超
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西安威西特消防科技有限责任公司
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Priority to CN201721569643.3 priority Critical
Priority to CN201721569643.3U priority patent/CN207684929U/en
Application filed by 西安威西特消防科技有限责任公司 filed Critical 西安威西特消防科技有限责任公司
Publication of WO2019100957A1 publication Critical patent/WO2019100957A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D9/00Crystallisation
    • B01D9/02Crystallisation from solutions not used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/10Relating to general water supply, e.g. municipal or domestic water supply
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation

Abstract

Provided is a device for extracting mineral from a brine by using solar energy, comprising a solar collector (1), a heat exchanger (3) and an evaporation crystallization unit. An organic heat carrier in the solar collector (1) is a mineral oil type organic heat carrier and/or a synthetic organic heat carrier, and the organic heat carrier is heated to a temperature greater than 120 °C. The evaporation crystallization unit comprises an evaporation crystallizer (5), a condenser (6), and a condensate tank (7). The heat exchanger (3) is provided with a heat carrier inlet (21), a heat carrier outlet (22), a brine feed port (24) and a brine discharge port (23). The heat carrier inlet (21) is connected to the solar collector (1) through a heat exchanger pump (9), and the heat carrier outlet (22) is connected to the solar collector (1) through a circulation pipeline. The brine feed port (24) is connected to the raw material tank through a circulation pump (10), and the brine discharge port (23) is connected to the evaporation crystallizer (5). A vapor outlet of the evaporating crystallizer (5) is connected to a condenser (6), and a rear end of the condenser (6) is provided with the condensate tank (7). The condensate tank is connected to the vacuum pump (13). The bottom of the evaporating crystallizer (5) forms a circulation line through a pipe and a crystal slurry pump (11), and a crystal slurry discharge port is provided between the crystal slurry pump (11) and the circulation pipeline.

Description

Device for extracting minerals in brine by using solar energy Technical field

The utility model relates to the technical field of comprehensive utilization of brine, and more particularly to a device for extracting minerals in brine water by using solar energy.

Background technique

The salt lake brine contains abundant mineral resources such as magnesium, lithium, calcium and potassium. China's salt lake resources are mainly distributed in Qinghai, Tibet, Xinjiang and other provinces. However, because the salt lakes in these provinces are often sparsely populated, infrastructure is not perfect, and energy supply is insufficient, it has brought serious constraints to the development and utilization of these resources. At present, the devices for extracting minerals in brine mainly include evaporation crystallization method, precipitation method, salting out method, carbonization method, flotation method, extraction method, ion exchange adsorption method, calcination method, membrane separation method and the like. In order to save energy and reduce the requirements for infrastructure, the existing production process uses natural beach drying and evaporation crystallization, but the sun exposure time of Rizhao Beach often reaches 3 to 6 months, which severely limits the improvement of production efficiency. However, the industrial evaporative crystallization method is not suitable for direct application in the salt lake area due to its huge energy consumption, and the promotion of brine extraction and comprehensive utilization technology is also limited. Therefore, it is particularly important to seek a simple, efficient and energy-saving extraction technology.

Utility model content

In view of the defects of the prior art, especially the characteristics of the distribution of salt lake resources in China, the utility model provides a device for extracting minerals in brine water by using solar energy, which is economical, efficient, energy-saving and environmentally friendly, and is suitable for large-scale promotion of salt lake area.

The technical solution adopted by the utility model is:

A device for extracting mineral water in a brine by using solar energy, comprising: a solar collector, a heat exchanger and an evaporation crystallization unit; wherein the organic heat carrier in the solar collector is a mineral oil type organic heat carrier and/or Or a synthetic organic heat carrier; the organic heat carrier in the solar collector has a temperature of more than 120 ° C after heating.

The evaporation crystallization unit includes an evaporation crystallizer, a condenser, a condensate tank, and a pump; the pump includes a heat exchanger pump, a circulation pump, a slurry pump, a brine feed pump, and a vacuum pump.

The heat exchanger is provided with a heat carrier inlet, a heat carrier outlet, a brine feed port and a brine discharge port; the heat carrier inlet of the heat exchanger is connected to the solar collector through a heat exchanger pump, the heat carrier The outlet is connected to the solar collector through a circulation line; the brine feed port is connected to the raw material tank through a change circulation pump, and the brine discharge port is connected to the evaporation crystallizer.

a vapor outlet of the evaporative crystallizer is connected to a condenser, a rear end of the condenser is provided with a condensate tank; the condensate tank is connected with a vacuum pump; and a circulation pipe is formed at the bottom of the evaporating crystallizer through a pipe and a slurry pump A slurry outlet is provided between the slurry pump and the return line.

The steam outlet of the evaporative crystallizer can also be connected to the MVR device to reheat the heat carrier after heat exchange to improve the heat utilization rate.

An organic heat carrier storage tank is disposed between the solar heat collector and the heat exchanger, and a storage tank pump is disposed between the solar heat collector and the organic heat carrier storage tank.

The solar collector is a vacuum tube solar collector, a metal absorber vacuum tube collector, and a heat pipe vacuum tube collector.

The organic heat carrier is heated to a temperature greater than 180 ° C.

The evaporation crystallization unit is a single-effect evaporation crystallizer or a multi-effect evaporation crystallizer.

The solar collector heats the organic heat carrier to 180 ° C, stores it in an organic heat carrier storage tank, adds brine from the raw material pool through the brine feed port, and performs cyclic heat exchange with the organic heat carrier in the heat exchanger. The hot organic heat carrier is recycled to the solar collector through the circulation pipeline, and the heated brine is evaporated and crystallized in the evaporation crystallizer. The steam is discharged from the upper outlet for recycling, and the mineral crystal slurry is discharged from the crystal slurry outlet. The desired minerals were obtained by centrifugation in a centrifuge.

Further, the mineral oil type organic heat carrier is one or more of a mixture of a paraffin-based hydrocarbon, a mixture of a cycloalkyl hydrocarbon, and an aromatic hydrocarbon.

The synthetic organic heat carrier comprises: an alkylbenzene, an alkylbiphenyl, a mercapto and a dinonyltoluene, an azeotropic mixture of biphenyl and diphenyl ether, a terphenyl and a partially hydrogenated terphenyl, an alkyl diphenyl ether, One or more of an aliphatic hydrocarbon, a polyalphaalkane, a silicone oil, and a fluorocarbon.

Compared with the prior art, the advantages of the utility model are:

1) Combining with the actual situation of the salt lake area, the utility model utilizes the characteristics of local light intensity and adapts to local conditions, proposes a device that uses solar collectors instead of traditional hot steam, evaporates and crystallizes the brine, extracts the required minerals, and effectively saves energy. Reducing the requirements for infrastructure is suitable for large-scale promotion in the salt lake area.

2) The heat transfer medium of the organic heat carrier proposed by the utility model rejects the heat conduction of the traditional water medium, and the organic heat carrier with higher heat conduction temperature is used as the heat conduction medium, and the brine can be directly heated to above the boiling point, thereby greatly improving the evaporation crystallization efficiency of the brine.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention;

In the picture: 1-Solar collector, 2-organic heat carrier storage tank, 3-heat exchanger, 5-evaporation crystallizer, 6-condenser, 7-condensate tank, 8-storage tank pump, 9-replacement Heater pump, 10-cycle pump, 11-crystal slurry pump, 12-brine feed pump, vacuum pump 13, 21 - heat carrier inlet, 22-heat carrier outlet, 23-halogen outlet, 24-brine feed inlet

Detailed ways

The following is a specific embodiment of the content of the present invention, which is used to explain the technical solution to solve the technical problem in the present application, and helps the person skilled in the art to understand the content of the present invention, but the implementation of the technical solution of the present invention is not limited to These embodiments.

Example 1

An apparatus for extracting minerals in a brine by using solar energy, comprising a solar collector 1, a heat exchanger 3, and an evaporation crystallization unit; the evaporation crystallization unit comprising an evaporation crystallizer 5, a condenser 6, a condensate tank 7, and a pump; The pump comprises a heat exchanger pump 9, a circulation pump 10, a slurry pump 11, a brine feed pump 12, and a vacuum pump 13; the heat exchanger 3 is provided with a heat carrier inlet 21, a heat carrier outlet 22, and a brine feed port. 24 and a brine discharge port 23; the heat carrier inlet 21 of the heat exchanger 3 is connected to the solar collector 1 via a heat exchanger pump 9, and the heat carrier outlet 22 is connected to the solar collector 1 through a circulation line The brine feed port 24 is connected to the material pool via a changeover pump 10, the brine outlet 23 is connected to the evaporation crystallizer 5; the vapor outlet of the evaporation crystallizer 5 is connected to a condenser 6, the condensation The rear end of the device 6 is provided with a condensate tank 7; the condensate tank is connected to a vacuum pump 13. A circulation line is formed at the bottom of the evaporating crystallizer 5 through a pipe and a slurry pump 11, and a slurry discharge port is provided between the slurry pump 11 and the return line. An organic heat carrier storage tank 2 is disposed between the solar heat collector 1 and the heat exchanger 3, and a storage tank pump 8 is disposed between the solar heat collector 1 and the organic heat carrier storage tank 2.

The solar collector heats the organic heat carrier to 180 ° C, stores it in an organic heat carrier storage tank, adds brine from the raw material pool through the brine feed port 24, and performs cyclic heat exchange with the organic heat carrier in the heat exchanger 3. After the heat exchange, the organic heat carrier is recycled to the solar collector 1 through the circulation pipeline, and the heated brine is evaporated and crystallized in the evaporation crystallizer 5, and the steam is discharged from the upper outlet and condensed and recycled through the condenser 6. The mineral crystal slurry is discharged from the crystal slurry outlet and centrifuged to obtain the desired minerals.

The steam outlet of the evaporative crystallizer can also be connected to the MVR device to reheat the heat carrier after heat exchange to improve the heat utilization rate.

Embodiment 2 The device of the present invention is compared with the prior art

Figure PCTCN2018114988-appb-000001

It can be seen from the table that the apparatus of the present invention and the vapor source evaporation crystallization apparatus can reach a high level in terms of extraction efficiency, extraction purity and treatment cycle, but the utility model directly utilizes solar energy, energy saving and environmental protection, and the substrate The facility is less dependent. Although the natural beach drying method directly uses solar energy, the floor space is huge, and the processing cycle and extraction efficiency are far lower than the utility model.

The above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the present invention. Variations and modifications of the above-described embodiments are intended to fall within the scope of the claims as claimed in the appended claims.

Claims (8)

  1. A device for extracting minerals in brine by using solar energy, comprising: a solar collector (1), a heat exchanger (3) and an evaporation crystallization unit; and an organic heat in the solar collector (1) The carrier is a mineral oil type organic heat carrier and/or a synthetic organic heat carrier; the organic heat carrier in the solar collector (1) has a temperature of more than 120 ° C after heating.
  2. The apparatus according to claim 1, wherein said evaporation crystallization unit comprises an evaporation crystallizer (5), a condenser (6), a condensate tank (7), and a pump; and said pump comprises a heat exchanger pump ( 9), circulating pump (10), crystal slurry pump (11), brine feed pump (12), vacuum pump (13).
  3. The apparatus according to claim 1, characterized in that said heat exchanger (3) is provided with a heat carrier inlet (21), a heat carrier outlet (22), a brine feed port (24) and a brine discharge port ( 23); the heat carrier inlet (21) of the heat exchanger (3) is connected to the solar collector (1) via a heat exchanger pump (9), and the heat carrier outlet (22) is connected to the circulation line through a circulation line A solar collector (1); the brine feed port (24) is connected to the feed tank by a changeover pump (10), and the brine discharge port (23) is connected to the evaporation crystallizer (5).
  4. The device according to claim 2, characterized in that the vapor outlet of the evaporating crystallizer (5) is connected to a condenser (6), and the rear end of the condenser (6) is provided with a condensate tank (7); The condensate tank is connected with a vacuum pump (13); a circulation line is formed at the bottom of the evaporating crystallizer (5) through a pipe and a slurry pump (11), between the slurry pump (11) and the return line A crystal slurry discharge port is provided.
  5. The device according to claim 1, characterized in that an organic heat carrier storage tank (2) is arranged between the solar collector (1) and the heat exchanger (3), and the solar collector (1) There is a storage tank pump (8) between the organic heat carrier storage tank (2).
  6. The device according to claim 1, characterized in that the solar collector (1) is a vacuum tube solar collector, a metal absorber vacuum tube collector, and a heat pipe vacuum tube collector.
  7. The apparatus of claim 1 wherein said organic heat carrier is heated to a temperature greater than 180 °C.
  8. The apparatus according to claim 1, wherein said evaporation crystallization unit is a single-effect evaporation crystallizer or a multi-effect evaporation crystallizer.
PCT/CN2018/114988 2017-11-22 2018-11-12 Device for extracting minerals from brine by using solar energy WO2019100957A1 (en)

Priority Applications (2)

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CN201721569643.3 2017-11-22
CN201721569643.3U CN207684929U (en) 2017-11-22 2017-11-22 A kind of device extracting brine mineral using solar energy

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207684929U (en) * 2017-11-22 2018-08-03 西安威西特消防科技有限责任公司 A kind of device extracting brine mineral using solar energy
CN107697968A (en) * 2017-11-22 2018-02-16 西安威西特消防科技有限责任公司 A kind of method and apparatus that bittern mineral is extracted using solar energy

Citations (9)

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Publication number Priority date Publication date Assignee Title
US20110048006A1 (en) * 2009-09-03 2011-03-03 Cap Daniel P Solar desalinization plant
CN102336448A (en) * 2011-08-29 2012-02-01 陶欣 Saline treatment system and method
CN202208652U (en) * 2011-08-29 2012-05-02 陶欣 Salt water treating system
CN103626209A (en) * 2013-11-29 2014-03-12 西藏金睿资产管理有限公司 Efficient heat energy recycling method and system suitable for highlands
CN203612978U (en) * 2013-11-29 2014-05-28 西藏金睿资产管理有限公司 Efficient heat energy recovering and using system applicable to plateau regions
WO2017035244A1 (en) * 2015-08-24 2017-03-02 Global Water Farms Corporation Systems and methods for distillation of water from seawater, brackish water, waste waters, and effluent waters
CN107697968A (en) * 2017-11-22 2018-02-16 西安威西特消防科技有限责任公司 A kind of method and apparatus that bittern mineral is extracted using solar energy
CN207680080U (en) * 2017-11-22 2018-08-03 西安威西特消防科技有限责任公司 A kind of evaporation of solar energy puies forward halogen equipment
CN207684929U (en) * 2017-11-22 2018-08-03 西安威西特消防科技有限责任公司 A kind of device extracting brine mineral using solar energy

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110048006A1 (en) * 2009-09-03 2011-03-03 Cap Daniel P Solar desalinization plant
CN102336448A (en) * 2011-08-29 2012-02-01 陶欣 Saline treatment system and method
CN202208652U (en) * 2011-08-29 2012-05-02 陶欣 Salt water treating system
CN103626209A (en) * 2013-11-29 2014-03-12 西藏金睿资产管理有限公司 Efficient heat energy recycling method and system suitable for highlands
CN203612978U (en) * 2013-11-29 2014-05-28 西藏金睿资产管理有限公司 Efficient heat energy recovering and using system applicable to plateau regions
WO2017035244A1 (en) * 2015-08-24 2017-03-02 Global Water Farms Corporation Systems and methods for distillation of water from seawater, brackish water, waste waters, and effluent waters
CN107697968A (en) * 2017-11-22 2018-02-16 西安威西特消防科技有限责任公司 A kind of method and apparatus that bittern mineral is extracted using solar energy
CN207680080U (en) * 2017-11-22 2018-08-03 西安威西特消防科技有限责任公司 A kind of evaporation of solar energy puies forward halogen equipment
CN207684929U (en) * 2017-11-22 2018-08-03 西安威西特消防科技有限责任公司 A kind of device extracting brine mineral using solar energy

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