Seawater desalination and ice storage coupling system

Abstract

The invention provides a seawater desalination and ice storage coupling system which comprises a centrifugal machine, the centrifugal machine comprises a box body, a cover body, a rotary drum, a centrifugal motor, a spiral scraper and an operating mechanism, a centrifugal liquid inlet hole is formed in the cover body, a plurality of through holes are formed in the side wall of the rotary drum, the upper end of the spiral scraper is fixedly connected or integrally connected with a discharging rod, the cross section of the discharging rod and the cross section of the spiral scraper are both in a V shape or a U shape, the upper portion of the box body is provided with a centrifugal discharging hole connected with the discharging rod, and the lower portion of the box body is provided with a drainage hole communicated with an inner cavity of the box body. By arranging the spiral pipeline and the discharging rod, ice crystals can be completely extracted under the condition that the centrifugal machine does not stop working, the efficiency is relatively high, ice obtained after centrifugal desalination is stored, cold energy is transferred in time and space, electricity generated by renewable energy can be effectively consumed, and arbitrage can be carried out according to the difference between peak electricity and off-peak electricity.

Description

technical field [0001] The invention relates to a water treatment and energy cascade utilization system, in particular to a coupling system of seawater desalination and ice storage. Background technique [0002] Seawater desalination is an open-source incremental technology to realize the utilization of water resources. It will be vigorously developed in the future. The common seawater desalination methods mainly include distillation, reverse osmosis and freezing. Among them, the traditional freezing method mainly cools seawater at low temperature Until freezing, ice crystals are separated, washed, and melted to obtain fresh water. However, gravity desalination is mainly used for ice crystal separation, and the separation efficiency is relatively low. After desalination, fresh water needs to be used to remove the salt water on the surface of ice crystals. It will affect the desalination efficiency of seawater. In addition, with the development of renewable energy power gene...

AI Technical Summary

Problems solved by technology

[0002] Seawater desalination is an open-source incremental technology to realize the utilization of water resources. It will be vigorously developed in the future. The common seawater desalination methods mainly include distillation, reverse osmosis and freezing. Among them, the traditional freezing method mainly cools seawater at low temperature Until freezing, ice crystals are separated, washed, and melted to obtain fresh water. However, gravity desalination is mainly used for ice crystal separation, and the separation efficiency is relatively low. After desalination, fresh water needs to be used to remove the salt water on the surface of ice crystals. will affect the efficiency of seawater desalination

In addition, with the development of renewable energy power generation systems, energy storage is an important method to improve the consumption of random power generation. Among them, ice storage plays an important role in building energy saving and is also one of the main trends in future development. However, existing Most seawater desalination systems do not have the function of energy storage, the cost of desalination restricts its development, and the product competitiveness is relatively low

[0003] The Chinese invention patent application with the publication number CN112299521A discloses a centrifugal device for desalination of seawater. Although it can increase the separation speed of salt and ice crystals to a certain extent, it needs to be shut down to remove the ice crystals after the separation process is completed. , and the ice crystals taken out also need to use fresh water to remove the salt water on the surface of the ice crystals, which affects the efficiency, and the cold energy of the ice crystals is not fully utilized

[0004] In addition, the traditional freezing method is mainly based on block ice. Due to the low thermal conductivity of ice, as the thickness of the ice layer increases, the production efficiency of block ice is low and the energy consumption is high. Therefore, the traditional freezing method Seawater desalination systems have relatively low efficiency and relatively high energy consumption

Images