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
heat exchanger
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PCT/CN2018/114988
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French (fr)
Chinese (zh)
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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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Publication of WO2019100957A1 publication Critical patent/WO2019100957A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/02—Crystallisation from solutions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation

Definitions

  • 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.
  • 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, Cambodia, 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • 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.
  • 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
  • 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.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

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

一种利用太阳能提取卤水中矿物质的装置Device for extracting minerals in brine by using solar energy 技术领域Technical field
本实用新型涉及卤水综合利用技术领域，更具体地说是一种利用太阳能提取卤水中矿物质的装置。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.
背景技术Background technique
盐湖卤水中蕴含着丰富的镁、锂、钙、钾等矿物资源。我国盐湖资源主要分布在青海、西藏、新疆等省份，但由于这些省的盐湖地区往往人口稀少，基础设施尚不完善，能源供应不充足，因此给开发利用这些资源带来了严重的制约。目前卤水中提取矿物质的装置主要有蒸发结晶法、沉淀法、盐析法、碳化法、浮选法、萃取法、离子交换吸附法、煅烧法、膜分离法等多种装置。现有的生产工艺，为了节约能源、降低对基础设施的要求，多采用自然滩晒、蒸发结晶等装置，但由于日照滩晒耗时往往达到3～6个月，严重限制了生产效率的提升，而工业用蒸发结晶法由于能耗巨大，也不适于在盐湖区直接应用，卤水提取及综合利用技术的推广也因此受到了限制。因此寻求一种简单、高效并且节能环保的提取技术，显得尤为重要。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.
实用新型内容Utility model content
针对现有技术的缺陷，特别是我国盐湖资源分布地的特点，本实用新型提供了一种利用太阳能提取卤水中矿物质的装置，经济高效并且节能环保，适于盐湖区规模化推广。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.
本实用新型采用的技术方案是：The technical solution adopted by the utility model is:
一种利用太阳能提取卤水中矿物质装置，其特征在于：包括太阳能集热器、换热器和蒸发结晶单元；所述的太阳能集热器中的有机热载体为矿物油型有机热载体和/或合成型有机热载体；所述太阳能集热器中的有机热载体加热后温度大于120℃。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.
所述蒸发结晶单元包括蒸发结晶器、冷凝器、冷凝液罐和泵；所述泵包括换热器泵、循环泵、晶浆泵、卤水进料泵、真空泵。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.
所述换热器设有热载体进口、热载体出口、卤水进料口和卤水出料口；所述换热器的热载体进口通过换热器泵与太阳能集热器相连，所述热载体出口通过循环管路连接至太阳能集热器；所述卤水进料口通过换循环泵与原料池相连，所述卤水出料口与蒸发结晶器相连。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.
所述蒸发结晶器的蒸汽出口连接有冷凝器，所述冷凝器后端设有冷凝液罐；所述冷凝液罐连接有真空泵；在所述蒸发结晶器底部通过管道和晶浆泵形成循环管路，在所述晶浆泵与回流管路间设有晶浆出料口。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.
所述蒸发结晶器的蒸汽出口还可连接MVR设备对换热后的热载体进行再加热，提高热量的利用率。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.
所述太阳能集热器和换热器之间设有有机热载体储存罐，所述太阳能集热器和有机热载体储存罐之间设有储存罐泵。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.
所述的太阳能集热器为真空管太阳能集热器、金属吸热体真空管集热器、热管式真空管集热器。The solar collector is a vacuum tube solar collector, a metal absorber vacuum tube collector, and a heat pipe vacuum tube collector.
所述的有机热载体加热后温度大于180℃。The organic heat carrier is heated to a temperature greater than 180 ° C.
所述蒸发结晶单元为单效蒸发结晶器或多效蒸发结晶器。The evaporation crystallization unit is a single-effect evaporation crystallizer or a multi-effect evaporation crystallizer.
所述太阳能集热器将有机热载体加热到180℃，储存到有机热载体储罐中，从原料池经卤水进料口加入卤水，在换热器中与有机热载体进行循环换热，换热后的有机热载体经循环管路循环至太阳能集热器再次利用，被加热后的卤水在蒸发结晶器中进行蒸发结晶，蒸汽从上出口排出回收利用，矿物质晶浆从晶浆出口排出，通过离心机离心得到所需矿物质。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.
进一步地，所述矿物油型有机热载体为石蜡基碳氢化合物的混合物，环烷基碳氢化合物的混合物，芳香烃碳氢化合物的混合物中的一种或多种。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.
所述合成型有机热载体包括:烷基苯，烷基联苯，卞基和二卞基甲苯，联苯和联苯醚共沸混合物，三联苯和部分氢化三联苯，烷基联苯醚，脂肪烃，聚α烷烃，硅油，氟碳氢化合物中的一种或多种。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.
相对于现有技术，本实用新型的优势在于：Compared with the prior art, the advantages of the utility model are:
1)本实用新型结合盐湖地区实际情况，利用当地光照强的特点，因地制宜，提出利用太阳能集热器代替传统热蒸汽的装置，对卤水进行蒸发结晶处理，提取所需矿物质，有效节约能源、降低对基础设施的要求，适于盐湖地区大面积推广。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)本实用新型提出的有机热载体导热介质，摒弃传统的水介质导热，利用导热温度更高的有机热载体作为导热介质，可将卤水直接加热至沸点以上，大大提高了卤水蒸发结晶效率。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.
附图说明DRAWINGS
图1为本实用新型实施例1的结构示意图1 is a schematic structural view of Embodiment 1 of the present invention;
图中：1-太阳能集热器，2-有机热载体储存罐，3-换热器，5-蒸发结晶器，6-冷凝器，7-冷凝液罐，8-储存罐泵，9-换热器泵，10-循环泵、11-晶浆泵、12-卤水进料泵、真空泵13、21-热载体进口、22-热载体出口、23-卤水出料口，24-卤水进料口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
具体实施方式Detailed ways
以下是本实用新型内容的具体实施例，用于阐述本申请文件中所要解决技术问题的技术方案，有助于本领域技术人员理解本实用新型内容，但本实用新型技术方案的实现并不限于这些实施例。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.
实施例1Example 1
一种利用太阳能提取卤水中矿物质的装置，包括太阳能集热器1、换热器3、蒸发结晶单元；所述蒸发结晶单元包括蒸发结晶器5、冷凝器6、冷凝液罐7和泵；所述泵包括换热器泵9、循环泵10、晶浆泵11、卤水进料泵12、真空泵13；所述换热器3设有热载体进口21、热载体出口22、卤水进料口24和卤水出料口23；所述换热器3的热载体进口21通过换热器泵9与太阳能集热器1相连，所述热载体出口22通过循环管路连接至太阳能集热器1；所述卤水进料口24通过换循环泵10与原料池相连，所述卤水出料口23与蒸发结晶器5相连；所述蒸发结晶器5的蒸汽出口连接有冷凝器6，所述冷凝器6后端设有冷凝液罐7；所述冷凝液罐连接有真空泵13。在所述蒸发结晶器5底部通过管道和晶浆泵11形成循环管路，在所述晶浆泵11与回流管路间设有晶浆出料口。所述太阳能集热器1和换热器3之间设有有机热载体储存罐2，所述太阳能集热器1和 有机热载体储存罐2之间设有储存罐泵8。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.
所述太阳能集热器将有机热载体加热到180℃，储存到有机热载体储罐中，从原料池经卤水进料口24加入卤水，在换热器3中与有机热载体进行循环换热，换热后的有机热载体经循环管路循环至太阳能集热器1再次利用，被加热后的卤水在蒸发结晶器5中进行蒸发结晶，蒸汽从上出口排出，经冷凝器6冷凝回收利用，矿物质晶浆从晶浆出口排出，通过离心机离心得到所需矿物质。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.
所述蒸发结晶器的蒸汽出口还可连接MVR设备对换热后的热载体进行再加热，提高热量的利用率。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.
实施例2本实用新型装置与现有技术对比 Embodiment 2 The device of the present invention is compared with the prior art
Figure PCTCN2018114988-appb-000001
Figure PCTCN2018114988-appb-000001
从表中可以看出，从提取效率、提取纯度和处理周期看，本实用新型装置与蒸汽源蒸发结晶装置均能达到较高水平，但本实用新型装置直接利用太阳能，节能环保，对基材设施依赖度小。自然滩晒法虽然直接利用太阳能，但占地面积巨大，处理周期及提取效率均远低于本实用新型。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.
上述实施例仅仅是对本实用新型优选方案的说明，并不限制本实用新型。只要在本实用新型的实质精神范围内对上述实施例的变化、变型都应落入本申请的权利要求书请求保护的范围内。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. 一种利用太阳能提取卤水中矿物质的装置，其特征在于：包括太阳能集热器(1)、换热器(3)和蒸发结晶单元；所述的太阳能集热器(1)中的有机热载体为矿物油型有机热载体和/或合成型有机热载体；所述太阳能集热器(1)中的有机热载体加热后温度大于120℃。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. 根据权利要求1所述的装置，其特征在于：所述蒸发结晶单元包括蒸发结晶器(5)、冷凝器(6)、冷凝液罐(7)和泵；所述泵包括换热器泵(9)、循环泵(10)、晶浆泵(11)、卤水进料泵(12)、真空泵(13)。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. 根据权利要求1所述的装置，其特征在于：所述换热器(3)设有热载体进口(21)、热载体出口(22)、卤水进料口(24)和卤水出料口(23)；所述换热器(3)的热载体进口(21)通过换热器泵(9)与太阳能集热器(1)相连，所述热载体出口(22)通过循环管路连接至太阳能集热器(1)；所述卤水进料口(24)通过换循环泵(10)与原料池相连，所述卤水出料口(23)与蒸发结晶器(5)相连。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. 根据权利要求2所述的装置，其特征在于：所述蒸发结晶器(5)的蒸汽出口连接有冷凝器(6)，所述冷凝器(6)后端设有冷凝液罐(7)；所述冷凝液罐连接有真空泵(13)；在所述蒸发结晶器(5)底部通过管道和晶浆泵(11)形成循环管路，在所述晶浆泵(11)与回流管路间设有晶浆出料口。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. 根据权利要求1所述的装置，其特征在于：所述太阳能集热器(1)和换热器(3)之间设有有机热载体储存罐(2)，所述太阳能集热器(1)和有机热载体储存罐(2)之间设有储存罐泵(8)。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. 根据权利要求1所述的装置，其特征在于：所述的太阳能集热器 (1)为真空管太阳能集热器、金属吸热体真空管集热器、热管式真空管集热器。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. 根据权利要求1所述的装置，其特征在于：所述的有机热载体加热后温度大于180℃。The apparatus of claim 1 wherein said organic heat carrier is heated to a temperature greater than 180 °C.
  8. 根据权利要求1所述的装置，其特征在于：所述蒸发结晶单元为单效蒸发结晶器或多效蒸发结晶器。The apparatus according to claim 1, wherein said evaporation crystallization unit is a single-effect evaporation crystallizer or a multi-effect evaporation crystallizer.
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