Silt stripping method for circulating cooling water system

Abstract

The invention discloses a silt stripping method for a circulating cooling water system, which comprises the following steps of: preparing a silt stripping auxiliary agent by using sodium dodecyl benzene sulfonate, triethanolamine, polydimethyl silicon ether, sodium polyacrylate and water, adding the silt stripping auxiliary agent into cooling water in a ratio of 400 to 500mg / L for one-time circulation, adding a strong oxidizing agent into the normal circulating cooling water in a ratio of 2,000 to 3,000mg / L, and injecting clear water into the cooling water while circulating when the turbidityreaches a peak value to displace suspended matters in the cooling water. The consumption of the strong oxidizing agent is relatively reduced by 40 to 60 percent, the washing rate reaches over 99 percent, and the service life of the circulating cooling water system is prolonged, so the silt stripping method for the circulating cooling water system has the advantages of low strong oxidizing agent consumption, low metal pipeline corrosion, high washing rate, safe system operation and capability of prolonging the service life of the system.

Description

technical field [0001] The invention relates to a sludge stripping method of a circulating water system, in particular to a sludge stripping method of a circulating cooling water system. Background technique [0002] In the circulating cooling water system, the water temperature is appropriate, and it is easy to breed a large number of bacteria, microorganisms and algae. For example, in sunny places such as cooling towers, it is easy to breed various algae such as moss and moss; in places where the dissolved oxygen in the pipeline is insufficient , easy to breed anaerobic bacteria such as sulfate-reducing bacteria and siderophilic bacteria; these organisms are mainly colloidal suspended matter in water to form biological sludge, covering the condenser and pipes of the circulating cooling water system, etc. On the inner surface, biological sludge hinders the normal passage of cooling water and reduces the cooling effect of the condenser. The differential potential formed by b...

AI Technical Summary

Problems solved by technology

However, the current method of using 13% sodium hypochlorite solution or 35% hydrogen peroxide has a large amount of strong oxidant, a short dredging time, a low cleaning rate, a large degree of corrosion to metal pipes, and large silt lumps that are peeled off. It may block the filter screen and heat exchanger, and it will cause major production safety accidents such as parking if the car is not stopped for cleaning