Single-vacuum-chamber super-gravity normal-temperature multi-stage flashing seawater desalination system

Abstract

The invention discloses a single-vacuum-chamber super-gravity normal-temperature multi-stage flashing seawater desalination system. The interior of a super-gravity machine is provided with a vacuum chamber, an air exchanging chamber and multiple flash chambers which are horizontally arranged from left to right; the top end of a super-gravity machine rotation shaft is fixedly connected with the center of the bottom of the vacuum chamber, the vacuum chamber is communicated with the air exchanging chamber, the top of each flash chamber is connected with the bottom of the air exchanging chamber through a corresponding pipeline with a valve, condensing areas in the upper portions of the flash chambers are communicated through a condensing pipe from right to left, evaporating areas in the lower portions of the flash chambers are sequentially connected step by step and communicated from left to right, a solar heater is connected between the leftmost end of the condensing pipe and the lower portion of the leftmost-side flash chamber, and seawater enters the system from the rightmost end of the condensing pipe. According to the single-vacuum-chamber super-gravity normal-temperature multi-stage flashing seawater desalination system, the pressure of the flash chambers is improved with the vacuum chamber, the pressure in the flash chambers is completely same, and on the condition that it is guaranteed that the pressure in the last-stage flash chamber is smaller than the saline water saturated vapor pressure, the pressure difference of the front flash chambers is increased, and then the formed fresh water quantity is increased.

Description

technical field [0001] The invention relates to the fields of chemical industry and energy, in particular to a multi-stage flash seawater desalination system, which uses a supergravity machine to generate a vacuum environment to improve the pressure in the flash chamber of the system. Background technique [0002] Seawater desalination technology includes low-temperature multi-effect seawater desalination technology, reverse osmosis technology and multi-stage flash seawater desalination technology. Among them, the disadvantage of the low-temperature multi-effect seawater desalination technology is that the equipment is relatively large. The reverse osmosis technology needs to replace the reverse osmosis membrane, high-pressure pump and energy recovery device regularly, and there are problems of membrane life and pollution. The multi-stage flash seawater desalination technology The disadvantages are fast corrosion of equipment, large power consumption, low heat transfer effic...

AI Technical Summary

Problems solved by technology

This multi-stage flash seawater desalination system has the following problems: the generation of saturated steam requires the use of a vacuum pump to adjust the pressure in the flash chamber, and it is necessary to evacuate each stage of the flash chamber to meet the different pressures in each stage of the flash chamber Requirements, this just needs to be equipped with a vacuum pump for each flash chamber, has increased device equipment and cost, simultaneously makes the system volume too large, has increased power consumption, simultaneously, drives each vacuum pump and can consume more energy, and The use of electric heaters also consumes more electricity

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