CN205653194U - Utilize absorption formula sea water desalination of solar energy and geothermal energy combined drive - Google Patents
Utilize absorption formula sea water desalination of solar energy and geothermal energy combined drive Download PDFInfo
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- CN205653194U CN205653194U CN201620479264.4U CN201620479264U CN205653194U CN 205653194 U CN205653194 U CN 205653194U CN 201620479264 U CN201620479264 U CN 201620479264U CN 205653194 U CN205653194 U CN 205653194U
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- 239000013535 sea water Substances 0.000 title claims abstract description 76
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 312
- 238000002336 sorption--desorption measurement Methods 0.000 claims abstract description 111
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 239000012267 brine Substances 0.000 claims abstract description 27
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000013505 freshwater Substances 0.000 claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims abstract description 25
- 239000011552 falling film Substances 0.000 claims description 34
- 238000011084 recovery Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 21
- 238000003795 desorption Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 12
- 230000001172 regenerating effect Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001795 light effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- 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
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
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- Sorption Type Refrigeration Machines (AREA)
Abstract
本实用新型公开了利用太阳能和地热能联合驱动的吸附式海水淡化系统，它包括热水系统，它还包括冷却水系统和海水供水装置，海水供水装置包括海水箱，经脱气、预处理后的海水进入海水箱；淡水收集装置、浓盐水收集装置、第一吸附‑解吸装置和第二吸附‑解吸装置，第二吸附‑解吸装置的换热管的出水口通过回热水管与第一吸附‑解吸装置的换热管的进水口相连通；第一吸附‑解吸装置的换热管的出水口通过回热水管路与第二吸附‑解吸装置的换热管的进水口相连通，采用本系统可以实现设备24小时连续运行，保持较高的效率。
The utility model discloses an adsorption type seawater desalination system driven jointly by solar energy and geothermal energy. It includes a hot water system, a cooling water system and a seawater water supply device. The seawater water supply device includes a seawater tank, which is degassed and pretreated The seawater enters the seawater tank; the fresh water collection device, the concentrated brine collection device, the first adsorption-desorption device and the second adsorption-desorption device, the water outlet of the heat exchange tube of the second adsorption-desorption device passes through the return water pipe and the first The water inlet of the heat exchange tube of the adsorption-desorption device is connected; the water outlet of the heat exchange tube of the first adsorption-desorption device is connected with the water inlet of the heat exchange tube of the second adsorption-desorption device through the return hot water pipeline, Using this system can realize the 24-hour continuous operation of the equipment and maintain a high efficiency.
Description
技术领域technical field
本实用新型涉及海水淡化技术领域，具体涉及吸附式海水淡化技术领域。The utility model relates to the technical field of seawater desalination, in particular to the technical field of adsorption seawater desalination.
背景技术Background technique
随着人口的增长和水资源的日益短缺，海水淡化引起了世界各国的普遍重视。然而，传统的海水淡化技术基础投资和运行费用均十分高昂。目前，已经商业化的海水淡化技术包括反渗透、多级闪蒸和多效蒸馏。沙特阿拉伯等西亚国家采用的多级闪蒸技术以及欧美国家广泛采用的反渗透技术的单位制水能耗均远高于以地表水和地下水为水源的能耗。利用传统能源进行海水淡化会消耗大量的资源，增加温室气体的排放。太阳能、风能和地热等新兴能源由于其可再生和绿色无污染等特性，将是海水淡化驱动力新的发展方向。With the growth of population and the increasing shortage of water resources, seawater desalination has attracted the attention of countries all over the world. However, the basic investment and operating costs of traditional seawater desalination technology are very high. Currently, desalination technologies that have been commercialized include reverse osmosis, multi-stage flash evaporation and multi-effect distillation. The energy consumption per unit of water production of the multi-stage flash evaporation technology adopted by Saudi Arabia and other West Asian countries and the reverse osmosis technology widely used in European and American countries is much higher than that of surface water and groundwater as water sources. Seawater desalination using traditional energy consumes a lot of resources and increases greenhouse gas emissions. Emerging energy sources such as solar energy, wind energy, and geothermal energy will be new development directions for seawater desalination due to their renewable, green and non-polluting characteristics.
利用太阳能进行海水淡化，主要是利用太阳能的热效应和光效应。热效应是直接利用太阳能作为热源加热进行海水蒸馏；光效应是利用太阳能发电驱动海水脱盐过程。太阳能海水淡化系统的一个明显缺点是它只能在白天有阳光的时候提供热能输入，如果脱盐设备需要连续不间断运行，则需要大量的热源储备；风能驱动的海水淡化技术在沿海高风能地区有很好的应用前景。但风能和太阳能一样，也具有间歇性的特点，难以支持海水淡化设备的持续运行；相比太阳能和风能，地热的优点是可以24小时不间断地提供能源。地热系统的持续工作依赖于合理的设计。将太阳能与地热结合起来，不仅可以解决夜间的能源储备问题，也有利于地热能的恢复。Seawater desalination using solar energy mainly utilizes the thermal effect and light effect of solar energy. Thermal effect is to directly use solar energy as a heat source to heat seawater for distillation; light effect is to use solar power to drive seawater desalination process. An obvious disadvantage of the solar desalination system is that it can only provide thermal energy input during the day when there is sunshine. If the desalination equipment needs to operate continuously without interruption, it needs a large amount of heat source storage; Very good application prospects. However, wind energy, like solar energy, also has intermittent characteristics, which makes it difficult to support the continuous operation of seawater desalination equipment; compared with solar energy and wind energy, the advantage of geothermal energy is that it can provide energy 24 hours a day. The continued operation of geothermal systems depends on sound design. Combining solar energy with geothermal energy can not only solve the problem of energy storage at night, but also facilitate the recovery of geothermal energy.
多孔硅胶对水蒸气有很强的亲和力，并且能够在相对低温下解吸所吸附的水蒸气。多孔硅胶的这一特点使得低温热源驱动的水蒸气吸附/解吸技术(吸附脱盐技术)淡化海水成为可能。吸附脱盐技术的另一优点是由于蒸发温度较低，伴随卤水蒸发的卤化氢气体相应减少，因而产出水有较高的纯度。Porous silica gel has a strong affinity for water vapor and is capable of desorbing the adsorbed water vapor at relatively low temperatures. This characteristic of porous silica gel makes it possible to desalinate seawater by water vapor adsorption/desorption technology (adsorption desalination technology) driven by a low-temperature heat source. Another advantage of adsorption desalination technology is that due to the lower evaporation temperature, the hydrogen halide gas accompanying the evaporation of brine is correspondingly reduced, so the produced water has higher purity.
在吸附式海水淡化研究方面，文献《新型吸附式太阳能海水淡化技术》提出了一种太阳能吸附式海水淡化系统，并介绍了单效、多效技术的区别，但并未针对普遍采用的单效系统提出增加吸附/解吸量及提高能源利用效率方面的措施。In terms of adsorption seawater desalination research, the literature "New Adsorption Solar Seawater Desalination Technology" proposed a solar adsorption seawater desalination system, and introduced the difference between single-effect and multi-effect technologies, but did not focus on the commonly used single-effect The system proposes measures to increase the amount of adsorption/desorption and improve energy utilization efficiency.
专利《一种太阳能海水淡化装置及其操作方法》公开了一种太阳能海水淡化装置及其操作方法，该装置基于吸附式空气取水装置和饱和空气增湿减湿式太阳能蒸馏装置，通过热海水加湿空气，再通过冷海水减湿空气，实现饱和空气在大温差范围内产生淡水，同时通过吸附、脱附过程，实现冷空气在小温差范围内产生淡水。但此种方法利用空气进行海水淡化，效率非常低，大规模推广的前景堪忧。The patent "A Solar Seawater Desalination Device and Its Operation Method" discloses a solar seawater desalination device and its operation method. The device is based on an adsorption air water intake device and a saturated air humidification and dehumidification solar distillation device. The air is humidified by hot seawater , and then dehumidify the air through cold seawater, so that saturated air can produce fresh water within a large temperature range, and at the same time, through the process of adsorption and desorption, cold air can produce fresh water within a small temperature range. However, this method uses air to desalinate seawater, and the efficiency is very low, and the prospect of large-scale promotion is worrying.
专利《一种带回热回质循环的太阳能吸附式海水淡化装置》公开了一种带回热回质循环的太阳能吸附式海水淡化装置，但由于热源只采用太阳能，无法保证系统的连续高效运行，在不同地区的适应性较差。The patent "A Solar Adsorption Seawater Desalination Device with Heat-to-Mass Cycle" discloses a solar-adsorbed seawater desalination device with heat-to-mass cycle, but since the heat source only uses solar energy, the continuous and efficient operation of the system cannot be guaranteed , poor adaptability in different regions.
发明内容Contents of the invention
本实用新型的目的在于克服已有技术的缺点，提供一种通过合理调配太阳能和地热能的使用，最大限度的利用低温可再生能源，提高产水效率的同时保证系统可以连续24小时运行的利用太阳能和地热能联合驱动的吸附式海水淡化系统。The purpose of this utility model is to overcome the shortcomings of the prior art, to provide a utilization of low-temperature renewable energy to the greatest extent by rationally allocating the use of solar energy and geothermal energy, improving water production efficiency and ensuring that the system can run continuously for 24 hours. Adsorption seawater desalination system driven by combined solar and geothermal energy.
本实用新型所采用的技术方案是：The technical scheme adopted in the utility model is:
本实用新型的利用太阳能和地热能联合驱动的吸附式海水淡化系统，它包括热水系统，所述的热水系统包括地热供水井和地热回水井，供水循环管路依次连接所述的地热供水井、第一级热泵机组的蒸发器侧的进水口、第一级热泵机组的蒸发器侧的出水口以及地热回水井，低温水循环管路依次连接所述的第一级热泵机组的冷凝器侧的出水口、低温热水箱以及第一级热泵机组的冷凝器侧的进水口，太阳能集热器的进水口、出水口分别通过管道与所述的低温热水箱的第一出水口和第一进水口相连通；第二级热泵机组的蒸发器侧的进水口、出水口分别通过管道与所述的低温热水箱的第二出水口和第二进水口相连通，第二级热泵机组的冷凝器侧的进水口、出水口分别通过管道与高温热水箱的第一出水口和第一进水口相连通；它还包括：The adsorption-type seawater desalination system driven by solar energy and geothermal energy of the present utility model includes a hot water system, and the hot water system includes a geothermal water supply well and a geothermal return water well, and the water supply circulation pipeline is sequentially connected to the geothermal water supply well, the water inlet on the evaporator side of the first-stage heat pump unit, the water outlet on the evaporator side of the first-stage heat pump unit, and the geothermal return well, and the low-temperature water circulation pipeline is connected to the condenser side of the first-stage heat pump unit in sequence The water outlet of the low-temperature hot water tank and the water inlet of the condenser side of the first-stage heat pump unit, the water inlet and the water outlet of the solar collector are respectively connected with the first water outlet and the second water outlet of the low-temperature hot water tank through pipelines The first water inlet is connected; the water inlet and the water outlet on the evaporator side of the second-stage heat pump unit are respectively connected with the second water outlet and the second water inlet of the low-temperature hot water tank through pipelines, and the second-stage heat pump unit The water inlet and the water outlet on the side of the condenser are respectively communicated with the first water outlet and the first water inlet of the high-temperature hot water tank through pipes; it also includes:
冷却水系统,所述的冷却水系统包括冷却水箱,所述的冷却水箱通过装有冷却水供水水泵的管道和冷却塔的进水口相连通；Cooling water system, the cooling water system includes a cooling water tank, and the cooling water tank communicates with the water inlet of the cooling tower through a pipeline equipped with a cooling water supply pump;
海水供水装置，所述的海水供水装置包括海水箱，经脱气、预处理后的海水进入海水箱，所述的海水箱通过装有海水供水管阀和海水供水泵的管道与降膜蒸发器的壳程部分顶部的喷淋装置相连通；Seawater water supply device, the seawater water supply device includes a seawater tank, the seawater after degassing and pretreatment enters into the seawater tank, and the seawater tank passes through a pipeline equipped with a seawater supply pipe valve and a seawater supply pump and a falling film evaporator The spray device at the top of the shell side part is connected;
淡水收集装置，所述的淡水收集装置包括淡水收集箱，所述的淡水收集箱通过装有淡水收集管阀的管道与降膜蒸发器的管程部分底部出口相连通，真空泵与降膜蒸发器的管程部分顶部相连接；Fresh water collection device, described fresh water collection device comprises fresh water collection box, described fresh water collection box is connected with the bottom outlet of tube side part of falling film evaporator through the pipeline that fresh water collection pipe valve is housed, and vacuum pump is connected with falling film evaporator The top of the tube part is connected;
浓盐水收集装置，所述的浓盐水收集装置包括浓盐水收集箱，所述的浓盐水收集箱通过装有浓盐水收集管阀的管道与降膜蒸发器的壳程部分底部出口相连通；A concentrated brine collection device, the described concentrated brine collection device comprises a concentrated brine collection box, and the described concentrated brine collection box communicates with the shell side part bottom outlet of the falling film evaporator through a pipeline equipped with a concentrated brine collection pipe valve;
第一吸附-解吸装置和第二吸附-解吸装置，两个吸附-解吸装置均包括密闭壳体，在所述的密闭壳体内分别安装有吸附-解吸床，所述的吸附-解吸床包括硅胶和盘绕在硅胶中的换热管，两个吸附-解吸装置的密闭壳体上的蒸汽开口分别通过装有第一蒸汽管路自动阀、第五蒸汽管路自动阀的支管共同与装有第四蒸汽管路自动阀的第一蒸汽管道相连通，所述的第一蒸汽管道的出口与降膜蒸发器的管程部分相连通，所述的降膜蒸发器的壳程部分通过第二蒸汽管道与装有第二蒸汽管路自动阀的一个蒸汽出口支管以及装有第三蒸汽管路自动阀的另一个蒸汽出口支管相连通，两个所述的蒸汽出口支管的出口分别与一个对应设置的吸附-解吸装置的密闭壳体上的进口相连通；高温热水箱的第二出水口通过热水供水管连接热水循环水泵后分为两路，其中一路依次连接第九水管路自动阀以及第一吸附-解吸装置的换热管的进水口，另一路依次连接第二水管路自动阀以及第二吸附-解吸装置的换热管的进水口；冷却塔的出水口通过冷却水供水管连接冷却水循环水泵后为两路，其中一路依次连接第十水管路自动阀以及第一吸附-解吸装置的换热管的进水口，另一路依次连接第一水管路自动阀以及第二吸附-解吸装置的换热管的进水口；高温热水箱的进水口连接热水回水管后分为两路，其中一路依次连接第八水管路自动阀以及第一吸附-解吸装置的换热管的出水口，另一路依次连接第三水管路自动阀以及第二吸附-解吸装置的换热管的出水口；冷却水箱的进水口连接冷却水回水管后分为两路，其中一路依次连接第七水管路自动阀以及第一吸附-解吸装置的换热管的出水口，另一路依次连接第四水管路自动阀以及第二吸附-解吸装置的换热管的出水口；The first adsorption-desorption device and the second adsorption-desorption device, both adsorption-desorption devices include a closed shell, and an adsorption-desorption bed is respectively installed in the closed shell, and the described adsorption-desorption bed includes silica gel and the heat exchange tubes coiled in silica gel, the steam openings on the closed shells of the two adsorption-desorption devices are respectively connected with the branch pipes equipped with the first steam pipeline automatic valve and the fifth steam pipeline automatic valve with the second steam pipeline automatic valve. The first steam pipeline of the four-steam pipeline automatic valve is connected, and the outlet of the first steam pipeline is connected with the tube side part of the falling film evaporator, and the shell side part of the falling film evaporator is passed through the second steam pipeline. The pipeline communicates with a steam outlet branch pipe equipped with a second steam pipeline automatic valve and another steam outlet branch pipe equipped with a third steam pipeline automatic valve, and the outlets of the two steam outlet branch pipes are respectively connected to a corresponding The inlet on the airtight shell of the adsorption-desorption device is connected; the second outlet of the high-temperature hot water tank is connected to the hot water circulating water pump through the hot water supply pipe and divided into two paths, one of which is connected to the ninth water pipeline automatic valve in turn. And the water inlet of the heat exchange tube of the first adsorption-desorption device, the other road is connected in turn to the water inlet of the second water pipeline automatic valve and the heat exchange tube of the second adsorption-desorption device; the water outlet of the cooling tower passes through the cooling water supply pipe After connecting the cooling water circulation pump, there are two lines, one of which is connected to the tenth water pipeline automatic valve and the water inlet of the heat exchange tube of the first adsorption-desorption device in sequence, and the other is connected to the first water pipeline automatic valve and the second adsorption-desorption in sequence The water inlet of the heat exchange pipe of the device; the water inlet of the high-temperature hot water tank is connected to the hot water return pipe and divided into two paths, one of which is connected to the eighth water pipeline automatic valve and the outlet of the heat exchange pipe of the first adsorption-desorption device in turn. The water outlet, the other one is connected to the third water pipeline automatic valve and the water outlet of the heat exchange tube of the second adsorption-desorption device in turn; the water inlet of the cooling water tank is connected to the cooling water return pipe and divided into two ways, one of which is connected to the seventh water pipe in turn One road automatic valve and the water outlet of the heat exchange tube of the first adsorption-desorption device, and the other road is connected to the water outlet of the fourth water pipeline automatic valve and the heat exchange tube of the second adsorption-desorption device in sequence;
所述的第二吸附-解吸装置的换热管的出水口通过依次装有第五水管路自动阀、回热水箱和回热循环水泵的回热水管与第一吸附-解吸装置的换热管的进水口相连通；所述的第一吸附-解吸装置的换热管的出水口通过装有第六水管路自动阀的回热水管路与第二吸附-解吸装置的换热管的进水口相连通；The water outlet of the heat exchange tube of the second adsorption-desorption device is exchanged with the first adsorption-desorption device through the return water pipe equipped with the fifth water pipeline automatic valve, the heat recovery tank and the heat recovery circulating water pump in sequence. The water inlet of the heat pipe is connected; the water outlet of the heat exchange pipe of the first adsorption-desorption device is connected with the heat exchange pipe of the second adsorption-desorption device through the return hot water pipeline equipped with the sixth water pipeline automatic valve. connected to the water inlet;
所述的第一水管路自动阀至第十水管路自动阀、第一蒸汽管路自动阀至第五蒸汽管路自动阀为自动阀门并与控制系统相连接，所述的海水供水管阀、淡水收集管阀、浓盐水收集管阀为手动阀门或者自动阀门，当所述的海水供水管阀、淡水收集管阀、浓盐水收集管阀为自动阀门时，所述的海水供水管阀、淡水收集管阀、浓盐水收集管阀与控制系统相连接，上述各水泵以及真空泵均与控制系统相连接。The first water pipeline automatic valve to the tenth water pipeline automatic valve, the first steam pipeline automatic valve to the fifth steam pipeline automatic valve are automatic valves and are connected with the control system, the sea water supply pipe valve, The fresh water collection pipe valve and concentrated brine collection pipe valve are manual valves or automatic valves. When the seawater supply pipe valve, fresh water collection pipe valve, and concentrated brine collection pipe valve are automatic valves, the seawater supply pipe valve, The collection pipe valve and the concentrated brine collection pipe valve are connected to the control system, and the above-mentioned water pumps and vacuum pumps are all connected to the control system.
本实用新型的有益效果是：采用太阳能和地热能作为能源，具有可再生，环保无污染的特点；通过合理调配太阳能和地热能的使用，可以实现设备24小时连续运行，保持较高的效率；采用水蒸气吸附/解吸海水淡化技术，相比于其它海水淡化技术具有运动部件少、工作温度低、初级能源消耗低的特点，有利于设备的安全运行，同时节能降耗；在吸附式海水淡化技术基础上，采用回热回质循环，能够增加吸附/解吸量，提高能源利用效率，增加单位耗能的淡水产量。The beneficial effects of the utility model are: the use of solar energy and geothermal energy as energy sources has the characteristics of regeneration, environmental protection and pollution-free; by rationally allocating the use of solar energy and geothermal energy, the equipment can be continuously operated for 24 hours and maintain high efficiency; Adopting water vapor adsorption/desorption seawater desalination technology, compared with other seawater desalination technologies, it has the characteristics of less moving parts, low working temperature and low primary energy consumption, which is conducive to the safe operation of equipment, and at the same time saves energy and reduces consumption; in adsorption seawater desalination On the basis of technology, the use of heat-regeneration cycle can increase the adsorption/desorption capacity, improve energy utilization efficiency, and increase the fresh water output per unit of energy consumption.
附图说明Description of drawings
图1是本实用新型的利用太阳能和地热能联合驱动的吸附式海水淡化系统的原理示意图；Fig. 1 is the schematic diagram of the principle of the adsorption type seawater desalination system driven by solar energy and geothermal energy of the present utility model;
图2是本实用新型的控制系统的原理示意图。Fig. 2 is a schematic diagram of the principle of the control system of the present invention.
具体实施方式detailed description
下面结合附图和具体实施例对本实用新型加以说明。The utility model is described below in conjunction with accompanying drawing and specific embodiment.
如图1所示的本实用新型的利用太阳能和地热能联合驱动的吸附式海水淡化系统,它包括:As shown in Fig. 1, the adsorption type seawater desalination system of the utility model utilizing solar energy and geothermal energy to jointly drive, it comprises:
热水系统，所述的热水系统包括地热供水井2和地热回水井1，供水循环管路依次连接所述的地热供水井、第一级热泵机组3的蒸发器侧的进水口、第一级热泵机组3的蒸发器侧的出水口以及地热回水井，低温水循环管路依次连接所述的第一级热泵机组3的冷凝器侧的出水口、低温热水箱5以及第一级热泵机组3的冷凝器侧的进水口，太阳能集热器4的进水口、出水口分别通过管道与所述的低温热水箱5的第一出水口和第一进水口相连通；第二级热泵机组6的蒸发器侧的进水口、出水口分别通过管道与所述的低温热水箱5的第二出水口和第二进水口相连通，第二级热泵机组6的冷凝器侧的进水口、出水口分别通过管道与高温热水箱51的第一出水口和第一进水口相连通，A hot water system, the hot water system includes a geothermal water supply well 2 and a geothermal return water well 1, and the water supply circulation pipeline is sequentially connected to the geothermal water supply well, the water inlet on the evaporator side of the first-stage heat pump unit 3, the first The water outlet on the evaporator side of the first-stage heat pump unit 3 and the geothermal return well, and the low-temperature water circulation pipeline are sequentially connected to the water outlet on the condenser side of the first-stage heat pump unit 3, the low-temperature hot water tank 5 and the first-stage heat pump unit The water inlet on the condenser side of 3, the water inlet and the water outlet of the solar heat collector 4 are respectively communicated with the first water outlet and the first water inlet of the low-temperature hot water tank 5 through pipelines; the second stage heat pump unit The water inlet and the water outlet on the evaporator side of 6 communicate with the second water outlet and the second water inlet of the low-temperature hot water tank 5 respectively through pipelines, and the water inlet and water outlet on the condenser side of the second-stage heat pump unit 6 The water outlets are respectively communicated with the first water outlet and the first water inlet of the high-temperature hot water tank 51 through pipes,
冷却水系统,所述的冷却水系统包括冷却水箱50,所述的冷却水箱通过装有冷却水供水水泵49的管道和冷却塔47的进水口相连通；Cooling water system, described cooling water system comprises cooling water tank 50, and described cooling water tank communicates with the water inlet of cooling tower 47 through the pipeline that cooling water supply water pump 49 is housed;
海水供水装置，所述的海水供水装置包括海水箱32，经脱气、预处理后的海水进入海水箱32，所述的海水箱32通过装有海水供水管阀33和海水供水泵34的管道与降膜蒸发器30的壳程部分顶部的喷淋装置相连通；所述的降膜蒸发器30为蒸发-冷凝装置，所述的降膜蒸发器30的壳程部分起蒸发器作用，管程部分起冷凝器作用，所述的降膜蒸发器30可以用相同作用的蒸发器、冷凝器、换热盘管等代替；Seawater water supply device, the seawater water supply device includes a seawater tank 32, the seawater after degassing and pretreatment enters the seawater tank 32, and the seawater tank 32 passes through the pipeline equipped with a seawater supply pipe valve 33 and a seawater supply pump 34 Be communicated with the shower device on the shell side part top of falling film evaporator 30; Described falling film evaporator 30 is an evaporation-condensing device, and the shell side part of described falling film evaporator 30 plays the role of evaporator, and tube The process part acts as a condenser, and the falling film evaporator 30 can be replaced by an evaporator, a condenser, a heat exchange coil, etc. with the same effect;
淡水收集装置，所述的淡水收集装置包括淡水收集箱36，所述的淡水收集箱36通过装有淡水收集管阀的管道与降膜蒸发器30的管程部分底部出口相连通，真空泵26与降膜蒸发器30的管程部分顶部相连接；所述的真空泵26与降膜蒸发器30的管程部分顶部相连接构成不凝性气体排放装置；Fresh water collection device, described fresh water collection device comprises fresh water collection tank 36, described fresh water collection tank 36 is communicated with the tube side part bottom outlet of falling film evaporator 30 through the pipeline that fresh water collection pipe valve is housed, vacuum pump 26 and The top of the tube side of the falling film evaporator 30 is connected; the vacuum pump 26 is connected to the top of the tube side of the falling film evaporator 30 to form a non-condensable gas discharge device;
浓盐水收集装置，所述的浓盐水收集装置包括浓盐水收集箱38，所述的浓盐水收集箱38通过装有浓盐水收集管阀39的管道与降膜蒸发器30的壳程部分底部出口相连通；Strong brine collecting device, described concentrated brine collecting device comprises concentrated brine collecting box 38, and described concentrated brine collecting box 38 passes through the pipeline that is equipped with concentrated brine collecting pipe valve 39 and the shell side part bottom outlet of falling film evaporator 30 Connected;
第一吸附-解吸装置和第二吸附-解吸装置，两个吸附-解吸装置均包括密闭壳体，如图分别为第一吸附-解吸装置的密闭壳体27、第二吸附-解吸装置的密闭壳体46，在所述的密闭壳体内安装有吸附-解吸床，分别为第一吸附-解吸装置的吸附-解吸床28，第二吸附-解吸装置的吸附-解吸床45，所述的吸附-解吸床包括硅胶和盘绕在硅胶中的换热管，分别为第一吸附-解吸装置的换热管29，第二吸附-解吸装置的换热管44，两个吸附-解吸装置的密闭壳体上的蒸汽开口分别通过装有第一蒸汽管路自动阀24、第五蒸汽管路自动阀43的支管共同与装有第四蒸汽管路自动阀42的第一蒸汽管道40相连通，所述的第一蒸汽管道40的出口与降膜蒸发器30的管程部分相连通，所述的降膜蒸发器30的壳程部分通过第二蒸汽管道25与装有第二蒸汽管路自动阀31的一个蒸汽出口支管以及装有第三蒸汽管路自动阀41的另一个蒸汽出口支管相连通，两个所述的蒸汽出口支管的出口分别与一个对应设置的吸附-解吸装置的密闭壳体上的进口相连通；The first adsorption-desorption device and the second adsorption-desorption device, the two adsorption-desorption devices all comprise airtight housings, as shown in the figure respectively the airtight housing 27 of the first adsorption-desorption device and the airtight housing of the second adsorption-desorption device Housing 46, adsorption-desorption bed is installed in described airtight housing, is respectively the adsorption-desorption bed 28 of the first adsorption-desorption device, the adsorption-desorption bed 45 of the second adsorption-desorption device, described adsorption - The desorption bed comprises silica gel and heat exchange tubes coiled in the silica gel, respectively the heat exchange tube 29 of the first adsorption-desorption unit, the heat exchange tube 44 of the second adsorption-desorption unit, the closed shells of the two adsorption-desorption units The steam openings on the body communicate with the first steam pipeline 40 equipped with the fourth steam pipeline automatic valve 42 through branch pipes equipped with the first steam pipeline automatic valve 24 and the fifth steam pipeline automatic valve 43 respectively. The outlet of the first steam pipeline 40 is communicated with the tube side part of the falling film evaporator 30, and the shell side part of the falling film evaporator 30 is connected with the second steam pipeline automatic valve through the second steam pipeline 25. A steam outlet branch pipe of 31 communicates with another steam outlet branch pipe equipped with a third steam pipeline automatic valve 41, and the outlets of the two steam outlet branch pipes are respectively connected to the airtight casing of a correspondingly arranged adsorption-desorption device The entrance on the road is connected;
高温热水箱51的第二出水口通过热水供水管8连接热水循环水泵52后分为两路，其中一路依次连接第九水管路自动阀22以及第一吸附-解吸装置的换热管的进水口，另一路依次连接第二水管路自动阀12以及第二吸附-解吸装置的换热管的进水口；冷却塔的出水口通过冷却水供水管7连接冷却水循环水泵48后为两路，其中一路依次连接第十水管路自动阀23以及第一吸附-解吸装置的换热管的进水口，另一路依次连接第一水管路自动阀11以及第二吸附-解吸装置的换热管的进水口；高温热水箱的进水口连接热水回水管9后分为两路，其中一路依次连接第八水管路自动阀21以及第一吸附-解吸装置的换热管的出水口，另一路依次连接第三水管路自动阀13以及第二吸附-解吸装置的换热管的出水口；冷却水箱的进水口连接冷却水回水管10后分为两路，其中一路依次连接第七水管路自动阀20以及第一吸附-解吸装置的换热管的出水口，另一路依次连接第四水管路自动阀14以及第二吸附-解吸装置的换热管的出水口；The second water outlet of the high-temperature hot water tank 51 is connected to the hot water circulating pump 52 through the hot water supply pipe 8 and then divided into two paths, one of which is sequentially connected to the ninth water pipeline automatic valve 22 and the heat exchange tube of the first adsorption-desorption device The other way is connected to the water inlet of the second water pipeline automatic valve 12 and the heat exchange tube of the second adsorption-desorption device in turn; the water outlet of the cooling tower is connected to the cooling water circulating water pump 48 through the cooling water supply pipe 7 and then it is two ways , one of which is sequentially connected to the tenth water pipeline automatic valve 23 and the water inlet of the heat exchange tube of the first adsorption-desorption device, and the other is sequentially connected to the first water pipeline automatic valve 11 and the heat exchange tube of the second adsorption-desorption device Water inlet; the water inlet of the high-temperature hot water tank is connected to the hot water return pipe 9 and then divided into two paths, one of which is connected to the eighth water pipeline automatic valve 21 and the water outlet of the heat exchange tube of the first adsorption-desorption device in turn, and the other Connect the third water pipeline automatic valve 13 and the water outlet of the heat exchange tube of the second adsorption-desorption device in turn; the water inlet of the cooling water tank is connected to the cooling water return pipe 10 and then divided into two paths, one of which is connected to the seventh water pipeline automatic Valve 20 and the water outlet of the heat exchange tube of the first adsorption-desorption device, and the other road is connected to the fourth water pipeline automatic valve 14 and the water outlet of the heat exchange tube of the second adsorption-desorption device in sequence;
所述的第二吸附-解吸装置的换热管44的出水口通过依次装有第五水管路自动阀15、回热水箱17和回热循环水泵18的回热水管16与第一吸附-解吸装置的换热管的进水口相连通；所述的第一吸附-解吸装置的换热管29的出水口通过装有第六水管路自动阀19的回热水管路与第二吸附-解吸装置的换热管的进水口相连通，回热水箱有助于稳定回热循环过程中的系统压力波动；所述的回热水箱17安装在回热水管路16上,构成回热水系统。The water outlet of the heat exchange tube 44 of the second adsorption-desorption device passes through the heat recovery pipe 16 equipped with the fifth water pipeline automatic valve 15, the heat recovery tank 17 and the heat recovery circulating water pump 18 in sequence with the first adsorption -The water inlet of the heat exchange tube of the desorption device is connected; the water outlet of the heat exchange tube 29 of the first adsorption-desorption device is connected with the second adsorption through the return water pipeline equipped with the sixth water pipeline automatic valve 19 - The water inlets of the heat exchange tubes of the desorption device are connected, and the regenerating water tank helps to stabilize the system pressure fluctuation during the regenerating cycle; the regenerating water tank 17 is installed on the regenerating water pipeline 16, forming a Back to hot water system.
所述的低温热水箱5和高温热水箱51包括但不限于普通水箱、将供回水分离的水箱等；The low-temperature hot water tank 5 and the high-temperature hot water tank 51 include but are not limited to ordinary water tanks, water tanks that separate supply and return water, etc.;
降膜蒸发器30的壳程部分起蒸发器作用，管程部分起冷凝器作用；The shell side part of the falling film evaporator 30 acts as an evaporator, and the tube side part acts as a condenser;
降膜蒸发器30可以用相同作用的蒸发器、冷凝器、换热盘管等代替；The falling film evaporator 30 can be replaced by evaporators, condensers, heat exchange coils, etc. with the same effect;
第一水管路自动阀11、第二水管路自动阀12、第三水管路自动阀13、第四水管路自动阀14、第五水管路自动阀15、第六水管路自动阀19、第七水管路自动阀20、第八水管路自动阀21、第九水管路自动阀22、第十水管路自动阀23、第一蒸汽管路自动阀24、第二蒸汽管路自动阀31、第三蒸汽管路自动阀41、第四蒸汽管路自动阀42、第五蒸汽管路自动阀43为自动阀门并与控制系统相连接，海水供水管阀33、淡水收集管阀37、浓盐水收集管阀39可采用手动阀门，也可采用自动阀门并与控制系统相连接。The first water pipeline automatic valve 11, the second water pipeline automatic valve 12, the third water pipeline automatic valve 13, the fourth water pipeline automatic valve 14, the fifth water pipeline automatic valve 15, the sixth water pipeline automatic valve 19, the seventh water pipeline automatic valve Water pipeline automatic valve 20, eighth water pipeline automatic valve 21, ninth water pipeline automatic valve 22, tenth water pipeline automatic valve 23, first steam pipeline automatic valve 24, second steam pipeline automatic valve 31, third The steam pipeline automatic valve 41, the fourth steam pipeline automatic valve 42, the fifth steam pipeline automatic valve 43 are automatic valves and are connected with the control system, the sea water supply pipe valve 33, the fresh water collection pipe valve 37, the concentrated brine collection pipe Valve 39 can adopt manual valve, also can adopt automatic valve and be connected with control system.
各水泵(回热循环水泵18、海水供水泵34、冷却塔供水水泵49、冷却水循环水泵48、热水循环水泵52)以及真空泵26均与控制系统相连接。Each water pump (heat recovery circulating water pump 18, sea water supply pump 34, cooling tower water supply pump 49, cooling water circulating water pump 48, hot water circulating water pump 52) and vacuum pump 26 are all connected with the control system.
第一吸附-解吸床28、第二吸附-解吸床45所采用吸附材料为硅胶。The adsorption material used in the first adsorption-desorption bed 28 and the second adsorption-desorption bed 45 is silica gel.
优选的在所述的第一吸附-解吸床的密闭壳体27、第二吸附-解吸床的密闭壳体46上，降膜蒸发器30上，热水供水管8、热水回水管9、回热水管16、第二蒸汽管道25、第一蒸汽管道40以及热源系统的管道，均包覆有保温材料。Preferably on the airtight housing 27 of the first adsorption-desorption bed, the airtight housing 46 of the second adsorption-desorption bed, on the falling film evaporator 30, the hot water supply pipe 8, the hot water return pipe 9, The hot water return pipe 16 , the second steam pipe 25 , the first steam pipe 40 and the pipes of the heat source system are all coated with thermal insulation materials.
本实用新型系统的工作过程如下：The working process of the utility model system is as follows:
在晴朗白天时，与所述的低温热水箱5(约40℃)相连的太阳能集热器4工作。根据太阳辐射强度情况，若所述的太阳能集热器4所产40℃左右的低温热水，通过第二级热泵机组6后，产生的80℃热水量能够满足驱动第一吸附-解吸床28、第二吸附-解吸床45解吸工况所需热水量，则地热供水井2、地热回水井1及所述的第一级热泵机组3不运行，所述的太阳能集热器4工作制得40℃左右的热水；若所述的太阳能集热器4所产40℃左右的低温热水，通过第二级热泵机组6后，产生的80℃热水量不能够满足驱动第一吸附-解吸床28、第二吸附-解吸床45解吸工况所需热水量，则所述的地热供水井2、地热回水井1及所述的第一级热泵机组3开启运行，与所述的太阳能集热器4同时工作制得40℃左右的热水至低温热水箱5中。在夜里及阴雨天时，所述的地热供水井2、地热回水井1及所述的第一级热泵机组3运行，制得40℃左右的热水至所述的低温热水箱5中。所述的低温热水箱5中的40℃左右热水通过循环管路输送至所述的第二级热泵机组6的蒸发器侧，经所述的第二级热泵机组6，将冷凝器侧热水升温至80℃后，通过循环管路输送至所述的高温热水箱51。所述的高温热水箱51中的热水(80℃左右)，经热水循环管路，输送至解吸状态下的第一吸附-解吸床28的换热管29中、第二吸附-解吸床45的换热管44中，加热解吸床中的吸附剂使水蒸气脱附，以驱动系统运行。During clear daytime, the solar heat collector 4 that links to each other with described low-temperature hot water tank 5 (about 40 ℃) works. According to the intensity of solar radiation, if the low-temperature hot water of about 40°C produced by the solar collector 4 passes through the second-stage heat pump unit 6, the amount of hot water at 80°C produced can meet the requirements for driving the first adsorption-desorption bed 28. The amount of hot water required for the desorption working condition of the second adsorption-desorption bed 45, the geothermal water supply well 2, the geothermal return water well 1 and the first-stage heat pump unit 3 are not in operation, and the solar heat collector 4 is in operation Prepare hot water at about 40°C; if the low-temperature hot water at about 40°C produced by the solar collector 4 passes through the second-stage heat pump unit 6, the amount of hot water at 80°C produced cannot meet the requirements of driving the first Adsorption-desorption bed 28, second adsorption-desorption bed 45 desorption working condition required hot water volume, then described geothermal water supply well 2, geothermal water return well 1 and described first-stage heat pump unit 3 start operation, and the The above-mentioned solar heat collector 4 works simultaneously and makes hot water of about 40° C. in the low-temperature hot water tank 5 . At night and in rainy days, the geothermal water supply well 2, the geothermal water return well 1 and the first-stage heat pump unit 3 operate to produce hot water at about 40° C. into the low-temperature hot water tank 5 . The hot water at about 40°C in the low-temperature hot water tank 5 is transported to the evaporator side of the second-stage heat pump unit 6 through the circulation pipeline, and the condenser side is passed through the second-stage heat pump unit 6. After the hot water is heated to 80° C., it is transported to the high-temperature hot water tank 51 through a circulation pipeline. The hot water (about 80°C) in the high-temperature hot water tank 51 is transported to the heat exchange tube 29 of the first adsorption-desorption bed 28 in the desorption state through the hot water circulation pipeline, and the second adsorption-desorption In the heat exchange tube 44 of the bed 45, the adsorbent in the desorption bed is heated to desorb water vapor to drive the system to run.
在一个完整的吸附-解吸循环开始时，第一吸附-解吸床28处于吸附饱和状态，第二吸附-解吸床45处于解吸完成状态；第一、第四蒸汽管路自动阀24、42打开，第五蒸汽管路自动阀43关闭，密闭壳体27与降膜蒸发器30的管程相连通，第九、第八水管路自动阀22、21打开，第十、第七水管路自动阀23、20关闭，高温热水箱51中的热水经热水供水管8进入换热管29，与第一吸附-解吸床28换热，此时第一吸附-解吸床28开始解吸，解吸出来的水蒸气由于压差作用进入降膜蒸发器30的换热管内部；与此同时，海水箱32中经过脱气、预处理的海水被输送进入降膜蒸发器30的壳程部分，经喷淋装置形成水滴，喷洒在降膜蒸发器30的换热管外壁上，海水中的水分吸收换热管内水蒸汽的凝结热而在换热管外汽化蒸发，浓盐水通过管道排放至浓盐水收集箱38，一部分浓盐水与补充的海水混合后经海水供水泵34再次进入降膜蒸发器蒸发；此时第三蒸汽管路自动阀41打开，第二蒸汽管路自动阀31关闭，降膜蒸发器30的壳程与密闭壳体46相连通，第一、第四水管路自动阀11、14打开，第二、第三水管路自动阀12、13关闭，冷却塔47产生的冷却水经冷却水供水管7进入换热管44，与第二吸附-解吸床45换热，此时第二吸附-解吸床45开始吸附，热的水蒸气进入密闭壳体46后被吸附剂吸附并逐渐冷却，在蒸汽压差驱动下，降膜蒸发器30换热管外的海水中的水分源源不断地蒸发进入密闭壳体46并被吸附；第一吸附-解吸床28解吸出来的水蒸气在降膜蒸发器30的换热管外冷海水的冷却下冷凝，进入淡水收集箱36，实现海水淡化；At the beginning of a complete adsorption-desorption cycle, the first adsorption-desorption bed 28 is in the adsorption saturation state, and the second adsorption-desorption bed 45 is in the desorption completion state; the first and fourth steam pipeline automatic valves 24, 42 are opened, The fifth steam pipeline automatic valve 43 is closed, the airtight casing 27 is connected with the pipe side of the falling film evaporator 30, the ninth and eighth water pipeline automatic valves 22, 21 are opened, the tenth and seventh water pipeline automatic valves 23 , 20 are closed, the hot water in the high-temperature hot water tank 51 enters the heat exchange pipe 29 through the hot water supply pipe 8, and exchanges heat with the first adsorption-desorption bed 28. At this time, the first adsorption-desorption bed 28 begins to desorb, and the desorption The water vapor in the falling film evaporator 30 enters the heat exchange tubes of the falling film evaporator 30 due to the pressure difference; at the same time, the degassed and pretreated seawater in the seawater tank 32 is transported into the shell side of the falling film evaporator 30, and sprayed The shower device forms water droplets and sprays them on the outer wall of the heat exchange tube of the falling film evaporator 30. The water in the seawater absorbs the condensation heat of the water vapor in the heat exchange tube and evaporates outside the heat exchange tube. The concentrated brine is discharged through the pipeline to the concentrated brine for collection. Box 38, a part of concentrated brine is mixed with supplemented seawater and enters the falling film evaporator again through the seawater supply pump 34 to evaporate; at this time, the third steam pipeline automatic valve 41 is opened, the second steam pipeline automatic valve 31 is closed, and the falling film evaporation The shell side of the device 30 is connected with the airtight casing 46, the first and fourth water pipeline automatic valves 11 and 14 are opened, the second and third water pipeline automatic valves 12 and 13 are closed, and the cooling water produced by the cooling tower 47 is cooled The water supply pipe 7 enters the heat exchange pipe 44 and exchanges heat with the second adsorption-desorption bed 45. At this time, the second adsorption-desorption bed 45 starts to adsorb, and the hot water vapor enters the airtight casing 46 and is absorbed by the adsorbent and gradually cooled , driven by the vapor pressure difference, the water in the seawater outside the heat exchange tubes of the falling film evaporator 30 continuously evaporates into the airtight shell 46 and is adsorbed; the water vapor desorbed by the first adsorption-desorption bed 28 The heat exchange tube of the evaporator 30 condenses under the cooling of the externally cooled seawater, and enters the fresh water collection tank 36 to realize seawater desalination;
当所述第一吸附-解吸床28的解吸过程和所述第二吸附-解吸床45的吸附过程临近结束时，第一、第二、第三、第四、第七、第八、第九、第十水管路自动阀11、12、13、14、20、21、22、23关闭，停止热水和冷却水循环，第二、第三、第四蒸汽管路自动阀31、41、42关闭，第五、第一蒸汽管路自动阀43、24打开，密闭壳体27和密闭壳体46相连通，密闭壳体27中的水蒸汽会在较大的压差作用下迅速流到密闭壳体46中，第一吸附-解吸床28解吸出的水蒸汽流入第二吸附-解吸床45，被吸附剂吸附，从而实现第一吸附-解吸床28的二次解吸过程以及第二吸附-解吸床45的二次吸附过程，所述的二次吸附-解吸过程称为回质循环过程，回质循环可以增加吸附-解吸床的循环吸附量和解吸量；When the desorption process of the first adsorption-desorption bed 28 and the adsorption process of the second adsorption-desorption bed 45 are nearing the end, the first, second, third, fourth, seventh, eighth, ninth , The tenth water pipeline automatic valves 11, 12, 13, 14, 20, 21, 22, 23 are closed to stop the circulation of hot water and cooling water, and the second, third and fourth steam pipeline automatic valves 31, 41, 42 are closed Fifth, the first steam pipeline automatic valve 43, 24 is opened, the airtight casing 27 and the airtight casing 46 are connected, and the water vapor in the airtight casing 27 will quickly flow to the airtight casing under the action of a large pressure difference In the body 46, the water vapor desorbed by the first adsorption-desorption bed 28 flows into the second adsorption-desorption bed 45 and is adsorbed by the adsorbent, thereby realizing the secondary desorption process of the first adsorption-desorption bed 28 and the second adsorption-desorption process. The secondary adsorption process of the bed 45, the secondary adsorption-desorption process is called the mass circulation process, and the mass circulation can increase the cyclic adsorption capacity and desorption capacity of the adsorption-desorption bed;
当密闭壳体27和密闭壳体46的压力接近平衡时，第三、第一蒸汽管路自动阀41、24关闭，第二、第五、第四蒸汽管路自动阀31、43、42打开，回质循环过程结束；第五、第六水管路自动阀15、19打开，回热循环水泵18启动，换热管29中的热水进入换热管44，而换热管44中的冷却水经过回热水箱17后进入换热管29，实现第一吸附-解吸床28和第二吸附-解吸床45之间的回热循环过程，其作用主要是将处于高温的第一吸附-解吸床28的显热通过回热循环水带往处于低温的第二吸附-解吸床45，从而回收了一部分的显热，也消除了在下一个过程中因换热管44中驻留冷水带来的热量损失以及因换热管29中驻留热水带来的冷量损失，能够节省一部分热水和冷却水用量，提高系统的能量利用效率，这个过程可以看成是尽量利用显热对第一吸附-解吸床28的预冷及对第二吸附-解吸床45的预热；When the pressures of the airtight housing 27 and the airtight housing 46 are close to equilibrium, the third and first steam pipeline automatic valves 41 and 24 are closed, and the second, fifth and fourth steam pipeline automatic valves 31, 43 and 42 are opened , the mass-regeneration cycle process ends; the fifth and sixth water pipeline automatic valves 15 and 19 are opened, the heat-regeneration circulating water pump 18 starts, the hot water in the heat-exchange pipe 29 enters the heat-exchange pipe 44, and the cooling water in the heat-exchange pipe 44 The water enters the heat exchange tube 29 after passing through the hot water tank 17 to realize the heat recovery cycle process between the first adsorption-desorption bed 28 and the second adsorption-desorption bed 45. The sensible heat of the desorption bed 28 is carried to the second adsorption-desorption bed 45 at a low temperature through the reheating circulating water, thereby recovering a part of the sensible heat and eliminating the heat caused by the cold water remaining in the heat exchange tube 44 in the next process. The loss of heat and the loss of cooling caused by the resident hot water in the heat exchange tube 29 can save part of the consumption of hot water and cooling water and improve the energy utilization efficiency of the system. Precooling of an adsorption-desorption bed 28 and preheating of a second adsorption-desorption bed 45;
当回热水箱中的水温基本稳定时，回热循环水泵18停止运行，第五、第六水管路自动阀15、19关闭，回热循环过程结束；此时第二、第三、第十、第七自动阀12、13、23、20打开，第一、第四、第九、第八自动阀11、14、22、21关闭，换热管44内的循环水转为热水，换热管29内的循环水转为冷水，第二吸附-解吸床45开始解吸过程，第一吸附-解吸床28开始吸附过程；When the water temperature in the regenerating water tank is basically stable, the regenerating circulating water pump 18 stops running, the fifth and sixth water pipeline automatic valves 15 and 19 are closed, and the regenerating cycle process ends; at this time, the second, third and tenth 1. The seventh automatic valve 12, 13, 23, 20 is opened, the first, fourth, ninth, and eighth automatic valve 11, 14, 22, 21 are closed, and the circulating water in the heat exchange pipe 44 is converted into hot water. The circulating water in the heat pipe 29 turns into cold water, the second adsorption-desorption bed 45 starts the desorption process, and the first adsorption-desorption bed 28 starts the adsorption process;
直至下一个回质循环过程和回热循环过程结束，此为一个完整的吸附-解吸循环。This is a complete adsorption-desorption cycle until the end of the next mass-regeneration cycle and heat-regeneration cycle.
紧接着，重复上述吸附-解吸、回质、回热过程，开始下一个吸附-解吸循环。Next, repeat the process of adsorption-desorption, mass recovery, and heat recovery above, and start the next cycle of adsorption-desorption.
通过合理调配太阳能和地热能的使用，吸附-解吸循环连续不间断进行，实现系统24小时连续运行。By rationally allocating the use of solar energy and geothermal energy, the adsorption-desorption cycle is carried out continuously and continuously, realizing the continuous operation of the system for 24 hours.
根据系统中不凝性气体的累积情况，当系统中不凝性气体累积到一定程度时，真空泵26开启运行，抽出系统内累积的不凝性气体。According to the accumulation of non-condensable gas in the system, when the non-condensable gas in the system accumulates to a certain extent, the vacuum pump 26 is turned on to pump out the accumulated non-condensable gas in the system.
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| WO2019066687A1 (en) | 2017-09-29 | 2019-04-04 | King Abdulaziz City For Science And Technology | Combined desalinated water production system |
| WO2019083416A1 (en) | 2017-10-23 | 2019-05-02 | King Abdulaziz City For Science And Technology | Water desalination system |
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| WO2019037588A1 (en) * | 2017-08-25 | 2019-02-28 | 李玉兰 | Multi-stage distillation device |
| WO2019066687A1 (en) | 2017-09-29 | 2019-04-04 | King Abdulaziz City For Science And Technology | Combined desalinated water production system |
| WO2019083416A1 (en) | 2017-10-23 | 2019-05-02 | King Abdulaziz City For Science And Technology | Water desalination system |
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