Method for realizing simultaneous production of water and heat through vertical multi-stage flash evaporation

A vertical, flash evaporation technology, applied in multi-stage water treatment, general water supply saving, chemical instruments and methods, etc., can solve problems such as high operating costs, and achieve reduced operating costs, reduced system operating costs, and reduced usage. Effect
CN113149112APending Publication Date: 2021-07-23TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-07-23

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Abstract

The invention belongs to the technical field of seawater desalination and central heating, and particularly relates to a method for realizing simultaneous production of water and heat through vertical multi-stage flash evaporation. According to the method, simultaneous production of water and heat is realized in a vertical multi-stage flash evaporation device consisting of a 1-P-stage vertical condenser and a vertical flash evaporator; according to the invention, a vertical structure is designed, and the flash evaporator and the condenser are independent. The pressure in the flash evaporator is increased along with the increase of the height, and the pressure in the condenser is reduced along with the increase of the height. Fresh water is directly heated into hot fresh water in the process, and the repeated heat exchange process that the fresh water is cooled firstly and then heated does not exist. The method can be matched with the hydrothermal co-production optimal flash evaporation process in thermodynamics.
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Description

technical field

[0001] The invention belongs to the technical field of seawater desalination and central heating, and in particular relates to a method for realizing co-production of water and heat by vertical multi-stage flash evaporation. Background technique

[0002] Water scarcity is increasingly becoming a global environmental and economic problem. China is one of the countries with the least per capita water resources in the world. It is necessary to jointly promote the efficient use of water resources from two aspects: increasing income and reducing expenditure. Since the second half of the 20th century, seawater desalination has gradually attracted the attention of the world. Compared with the other two freshwater intake methods: underground water intake and remote water transfer, seawater desalination has a wide range of raw water sources and low energy consumption. It is the most recognized by all countries in the world. The economical way to use fresh water. [...

Claims

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