Method for desalting seawater by applying squirrel-cage water-cooled motor and zirconia ceramic weld seam equipment

Abstract

The invention belongs to a method for desalting seawater by applying equipment, and discloses a method for desalting seawater by applying a squirrel-cage water-cooled motor and zirconia ceramic weld seam equipment. The equipment comprises a seawater pretreatment pool, a low-pressure suction pipe, a low-pressure lifting pump, a water replenishing suction pipe, a high-pressure make-up pump, a pipeline tee joint, a reverse osmosis membrane and a weld seam pressure exchange lifter pump; as an improvement, an assembly method of a squirrel-cage IV-type water-cooled motor, connection steps of a weld seam joint pipeline, a working flow of a union pressure exchanger and a reverse osmosis seawater desalting working process are as follows: I, the assembly method of the squirrel-cage IV-type water-cooled motor; II, the connection steps of the weld seam joint pipeline; III, a working flow of a weld seam pressure exchanger; IV, the reverse osmosis seawater desalting working process. The method for desalting the seawater by applying the squirrel-cage water-cooled motor and the zirconia ceramic weld seam equipment adopts a weld seam connecting structure, is resistant to high pressure, and has no leakage; particularly, the weld seam pressure exchange lifter pump is arranged additionally; a suction opening of a supercharging pump on a pressure lifting weld seam pump part is directly aligned with a supercharging central discharge hole in a weld seam pressure exchanger part; a structure is compact; an energy-saving effect is obvious.

Description

technical field [0001] The invention belongs to a seawater desalination method for applied equipment, in particular to a seawater desalination method for seawater desalination equipment using squirrel-cage water-cooled motors and zirconia ceramic weld seam equipment in which a pressure exchange hoist pump is added in a reverse osmosis seawater desalination system. Background technique [0002] With the advancement of science and technology, the population is increasing day by day, and people's desire to develop into the ocean is becoming stronger and stronger. Seawater desalination treatment is becoming more and more popular, and the energy consumption cost of seawater desalination has received special attention. Early seawater desalination used distillation, such as multi-stage flash technology, with an energy consumption of 9.0kWh / m3, and was usually only built in areas with low energy prices, such as Middle East oil countries, or areas where waste heat was available. In t...

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Problems solved by technology

[0006] 3. The earliest and most successful developed countries that invested in seawater desalination, such as Japan, Denmark, Netherlands, Sweden, Norway, the United Kingdom, the United States, and Germany, have all made efforts in pressure exchange, but their highest exchange efficiency has not exceeded 95 %, and the supporting project is huge, too many control components such as external electrical drive and switching valves lead to frequent accidents, which eventually lead to a substantial increase in equipment investment and additional costs such as daily management and maintenance

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