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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

Pending Publication Date: 2021-07-23
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This process requires the circulation of the internal solution through multiple circulation pumps, which has high operating costs

Method used

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

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Embodiment Construction

[0031] The invention provides a method for realizing co-production of water and heat by vertical multi-stage flash evaporation; the invention will be further described below in conjunction with the accompanying drawings.

[0032] figure 1 Shown is the flow chart of the first p-level vertical multi-stage flash evaporation method to realize co-production of water and heat; as shown in the figure, the method flow of vertical multi-stage flash evaporation to realize co-production of water and heat, including P-level vertical condensation 1, P-level vertical flash evaporator 2, seawater heat recovery heat exchanger 3, seawater peak heater 4, seawater inlet pipeline 5, seawater outlet pipeline 6, freshwater outlet pipeline 7; freshwater peak heater is also included 8. Return seawater pipeline 9, return seawater flow regulating valve 10, internal circulation seawater pipeline 11, P-level vertical flash evaporator and P-level vertical condenser internal heat exchange port 12 for exter...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/06C02F103/08
CPCC02F1/06C02F1/043C02F2103/08C02F2301/08C02F2303/10C02F2303/14Y02A20/124
Inventor 谢晓云江亿易禹豪朱超逸张浩
Owner TSINGHUA UNIV
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