Silt stripping method for circulating cooling water system

A technology for circulating cooling water and cooling water, which is applied to chemical instruments and methods, cleaning methods and utensils, cleaning hollow objects, etc., and can solve the problem of clogged filters and heat exchangers, large corrosion of metal pipes, and large amounts of strong oxidants, etc. problems, to achieve the effect of less pipeline corrosion, prolonged dredging time, and good dispersion

Active Publication Date: 2011-03-16
浙江川宁环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of sludge stripping method of circulating cooling water system, weigh 10 kilograms of sodium dodecylbenzenesulfonate, 5 kilograms of triethanolamine, 5 kilograms of polydimethylsiloxane, 15 kilograms of sodium polyacrylate, mix evenly, add 65 kilograms Stir and dissolve the pure water to obtain the sludge stripping aid; then keep the cooling water in the circulating cooling water system at the highest level, and add the sludge stripping aid to the cooling water according to the ratio of 400-500mg of the sludge stripping aid per liter of cooling water, Let the circulating water circulate normally for about 20-40 minutes; then add 2000-3000 mg of 13% (weight) sodium hypochlorite solution per liter of cooling water, and add 13% sodium hypochlorite solution to the cooling water in normal circulation, every Check the turbidity of the circulating water every 30 minutes. When the turbidity reaches the peak value, the turbidity rises by about 15-20 times. The circulation ...

Embodiment 2

[0017] It is basically the same as Example 1, except that 8 kilograms of sodium dodecylbenzenesulfonate, 4 kilograms of triethanolamine, 6 kilograms of polydimethylsiloxane, 18 kilograms of sodium polyacrylate, and 64 kilograms of purified water.

Embodiment 3

[0019] Substantially the same as Example 1, the only difference is 12 kilograms of sodium dodecylbenzenesulfonate, 6 kilograms of triethanolamine, 4 kilograms of polydimethylsiloxane, 12 kilograms of sodium polyacrylate, 66 kilograms of purified water, 35% ( weight) hydrogen peroxide instead of 13% sodium hypochlorite solution.

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PUM

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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 turbidity reaches 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/032C11D1/22C11D3/37C11D3/30
Inventor 邵永富
Owner 浙江川宁环保科技有限公司
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