Seawater circulating cooling system based on forward osmosis moisturizing technique

Abstract

Provided is a seawater circulating cooling system based on a forward osmosis moisturizing technique. The seawater circulating cooling system comprises an under tower pool arranged below a cooling tower and a water circulating pump connected with a water outlet of the under tower pool, and a water outlet of the water circulating pump is connected with a water inlet pipeline of a heat exchanger through a circulating cooling water pipeline. A medicine discharge port of an automatic medicine feeding device is connected onto the circulating cooling water pipeline. A water outlet pipeline of the heat exchanger is connected with a water inlet of a cooling tower, a seawater forward osmosis return circuit including a forward osmosis device is connected onto the circulating cooling water pipeline in parallel, and the front end of the circulating cooling water pipeline is connected with a first water inlet of the forward osmosis device through a bypass pipeline, and raw seawater is connected with a second water inlet of the forward osmosis device through a seawater water intaking pipeline, a seawater water intaking pump and a pre-treatment device sequentially. A first water outlet of the forward osmosis device is connected with the tail end of the circulating cooling water pipeline through the bypass pipeline. A second water outlet of the forward osmosis device is connected with the sea through a forward osmosis water exhaust pipe. The seawater circulating cooling system can reduce thermal pollution and medicament pollution of the sea and reduce medicament cost of system operation simultaneously.

Description

technical field [0001] The invention relates to a seawater circulation cooling system. In particular, it relates to a seawater circulation cooling system based on forward osmosis replenishment technology, which utilizes a forward osmosis process to produce supplementary water from seawater. Background technique [0002] Seawater circulating cooling technology can replace a large amount of freshwater resources used for industrial cooling due to the use of seawater as supplementary water. At the same time, this technology has less water intake and discharge than seawater direct cooling technology, and has less thermal pollution, so it is gaining more and more engineering applications. However, in the existing seawater circulating cooling system, the traditional water replenishment methods (including direct replenishment and pretreated replenishment) inevitably introduce suspended solids and a large amount of salt into the circulating water, which leads to scaling, corrosion a...

AI Technical Summary

Problems solved by technology

However, in the existing seawater circulating cooling system, the traditional water replenishment methods (including direct replenishment and pretreated replenishment) inevitably introduce suspended solids and a large amount of salt into the circulating water, which leads to scaling, corrosion and Bacterial growth and other problems

In order to ensure the normal operation of the system, a large amount of scale inhibitors, corrosion inhibitors and algae inhibitors must be added to the seawater circulating cooling system, and at the same time must be forced to discharge, which will have an adverse impact on the marine environment

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