A kind of ultrapure water preparation device and its ultrapure water preparation method

Abstract

The invention relates to an ultrapure water preparation device and an ultrapure water preparation method thereof, wherein the ultrapure water preparation device includes a first-stage fresh water system and a second-stage desalination system, and the first-stage fresh water system includes several heat exchange plates stacked horizontally Each adjacent heat exchange plate is staggered to form a first heat exchange channel and a second heat exchange channel. A collecting channel 1 is arranged above the first heat exchange channel, and the collecting channel 1 communicates with the cold water inlet pipe. The second The lower part of the heat exchange channel is provided with the second collecting channel, which is connected to the heat medium inlet, the lower part of the first heat exchange channel and the upper part of the second heat exchange channel are open, and the middle part of the first heat exchange channel is provided with In the liquid distribution and film forming device, the middle part of the second heat exchange channel is respectively provided with a sealing spacer to separate the second heat exchange channel into an upper channel and a lower channel. The heat medium outlet is connected, and the lower opening of the first heat exchange channel communicates with the upper opening of the second heat exchange channel through the communication cavity.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to an ultrapure water preparation device and an ultrapure water preparation method thereof. Background technique [0002] With the development of the economy and the progress of the society, the demand of human beings for resources is increasing, the destruction and pollution of natural resources themselves are increasing, and the supply of fresh water is becoming increasingly tense. In addition to resource-related water shortages, water-quality water-deficient areas are expanding day by day. How to obtain fresh water resources for human use from seawater, brackish water or other waste water has become a major problem that humans need to solve. [0003] At present, the mainstream desalination technologies mainly include RO membrane osmosis, electrodialysis, distillation, etc. Distillation has become a technical route with great development potential due to its low qual...

AI Technical Summary

Problems solved by technology

At present, the main distillation desalination technology generally adopts a shell-and-tube heat exchange structure, which requires a large amount of metal, covers a large area, and has heavy equipment, and is not suitable for places with special requirements for self-weight and space.

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