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Seawater desalination system based on variable-temperature fractionation generation

A seawater and generator technology, applied in the field of seawater desalination system based on variable temperature fractionation, can solve the problems of high energy consumption, achieve the effects of reducing system energy consumption, improving heat source utilization, and improving matching

Pending Publication Date: 2022-01-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One object of the present invention is to provide a seawater desalination system based on variable temperature fractionation, which improves the temperature matching between the seawater and solution fractionation process and the heat source based on the variable temperature fractionation process, and improves the energy utilization of the seawater desalination system At the same time, the absorption heat pump technology is used to recover the lower-grade heat energy released in the process of condensing water vapor into fresh water, and provide higher-grade heat energy for the preheating process of seawater, which solves the problem of high energy consumption of traditional seawater desalination systems The problem

Method used

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  • Seawater desalination system based on variable-temperature fractionation generation
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  • Seawater desalination system based on variable-temperature fractionation generation

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Embodiment 1

[0041] like figure 1 As shown, the seawater desalination system based on variable temperature fractionation includes a heat pump unit, a seawater separation unit connected to the heat pump unit, and an energy supply unit connected to the heat pump unit and / or the seawater separation unit, the The heat pump unit is used for the seawater preheating process and the variable temperature fractionation process of the solution, the seawater separation unit is used for the seawater variable temperature fractionation process, and the energy supply unit is used for the seawater preheating process and the solution temperature variable fractionation process. The occurrence process and the occurrence process of the variable temperature fractionation of seawater provide a heat source, wherein,

[0042] The seawater desalination system based on variable temperature fractionation has a heat source side where the heat source enters and a seawater side where seawater enters, wherein the heat tr...

Embodiment 2

[0059] like figure 2 As shown, Embodiment 2 of the present invention is a modified embodiment of Embodiment 1. The same as Embodiment 1, in the seawater desalination system based on variable temperature fractionation in Embodiment 2, the heat-carrying medium is also connected in parallel form into the heat pump unit. The difference from Example 1 is that in the seawater preheating process of the seawater desalination system based on variable temperature fractionation in Example 2, the flow path of seawater is different. Specifically, in the seawater preheating process of Example 2, the The seawater flows through the filter 18, the seawater pump 17 and the absorber 16 in sequence, and after the filtration process, pressurization process and heat exchange process are performed in sequence, the seawater flows into the condenser 9, the The heat exchange process is performed in the cooler 7 and the regenerator 4 , and the seawater that has completed the seawater preheating proces...

Embodiment 3

[0063] like image 3 As shown, Embodiment 3 of the present invention is a modified embodiment of Embodiment 1. The same as Embodiment 1, in the seawater desalination system based on variable temperature fractionation in Embodiment 3, the heat-carrying medium is also connected in parallel form into the heat pump unit. The difference from Example 1 is that in the seawater preheating process of the seawater desalination system based on variable temperature fractionation in Example 3, the flow path of seawater is different. Specifically, in the seawater preheating process of Example 3, the The heat pump unit also includes a seawater diversion valve group connected to the absorber 16, and the seawater diversion valve group includes a first seawater diversion valve 81 connected to the cooler 7 and a second seawater diversion valve connected to the condenser 9. Seawater diversion valve 82 , wherein the seawater flows through the filter 18 , the seawater pump 17 and the absorber 16 i...

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Abstract

The invention relates to a seawater desalination system based on variable temperature fractionation generation. The system comprises a heat pump unit, a sea water separation unit connected to the heat pump unit, and an energy supply unit connected to the heat pump unit and / or the sea water separation unit, the heat pump unit is used for carrying out a sea water preheating process and a solution variable temperature fractionation generation process, the seawater separation unit is used for carrying out the seawater temperature-changing fractionation generation process, and the energy supply unit is used for providing heat sources for the seawater preheating process, the solution temperature-changing fractionation generation process and the seawater temperature-changing fractionation generation process.By establishing a temperature-variable fractionation generation process of seawater and a solution, the heat source utilization temperature span can be effectively expanded, the temperature matching between the seawater and solution fractionation generation process and the heat source is improved, the heat source utilization rate is increased, and the system energy consumption can be effectively reduced by introducing the heat pump unit.

Description

technical field [0001] The invention relates to the fields of energy utilization technology and seawater desalination technology, in particular to a seawater desalination system based on variable temperature fractionation. Background technique [0002] Seawater desalination technology is a technology that human society must master. With the rapid growth of the world's population, terrestrial freshwater resources are gradually depleted, and some areas even have no water available. On the other hand, for some coastal areas or island areas, fresh water resources are scarce and cannot meet the daily needs of the people. Seawater desalination technology can effectively solve the problem of fresh water shortage, and it is a technical solution with strong operability and high maturity. [0003] Seawater desalination technology consumes a lot of energy. Seawater desalination units usually separate seawater by distillation to complete the freshwater preparation process. Due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/16C02F103/08
CPCC02F1/04C02F1/16C02F2103/08C02F2303/10Y02A20/124
Inventor 公茂琼鹿丁白银刘子健赵延兴
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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