Method for preparing thermally-driven purified water

Abstract

The invention discloses a method for preparing thermally-driven purified water. According to the method, A water production system is arranged, and comprises a water source pipeline, a heat source pipeline, a generating tank, an evaporator, a condenser, a vacuum pump and a water storage tank, wherein the generating tank and the water storage tank are respectively connected with the vacuum pump through valves, the generating tank is further communicated with the water storage tank through the condensation pipeline of the condenser, the evaporator is located in the generating tank and communicated with the heat source pipeline, and the water source pipeline is further communicated with the generating tank through the cooling pipeline of the condenser. In a low-pressure environment, cheap industrial wastewater is used as a heat source to heat raw water, and seawater or field lake water is used as a cold source to condense water vapor, so that the energy consumption of the system is reduced, and the preparation cost of purified water is reduced.

Description

technical field [0001] This application relates to water production technology, specifically a method for producing pure water using thermal drive. Background technique [0002] For aircraft performing missions at sea, if there is a breakdown and it is necessary to make an emergency landing on a deserted island or other place without the necessary conditions for life, the seawater desalination system becomes a key system to ensure the safety of the pilots. Generally speaking, seawater desalination technology is mainly divided into two types: thermal method (distillation method) and membrane method, among which low multi-effect, multi-stage flash evaporation and reverse osmosis methods are the mainstream technologies currently used in the world. Low multi-effect and multi-stage flash evaporation is to condense the steam after evaporating seawater due to the difference between boiling point and condensation point to obtain distilled water with high purity. However, this metho...

AI Technical Summary

Problems solved by technology

The reverse osmosis membrane method refers to the water production method that applies an external pressure higher than the osmotic pressure of the solution on the raw water side of the semi-permeable membrane. When the raw water passes through the semi-permeable membrane, only water is allowed to pass through, and other substances cannot pass through and are intercepted. It has the advantages of low cost and energy saving, but the reverse osmosis method has higher requirements for seawater pretreatment, and the seawater treated by reverse osmosis method has a strong taste, so it is difficult to use directly

At present, seawater desalination systems are rarely used on aircraft, and the existing systems are complex in design, high in design cost, and high in energy consumption

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