Treatment method for sulfur-containing circulating cooling water
A technology of circulating cooling water and water treatment agent, which is applied in the field of water treatment, can solve problems such as leakage, and achieve the effects of reducing energy consumption, saving chemical costs, and simple operation
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Embodiment 1
[0032] This example is used to illustrate the corrosion inhibition effect of using the method of the present invention to treat circulating cooling water containing sulfur.
[0033] The test water is the circulating water of a refinery. The water quality is: calcium ion 1070mg / L, total hardness 1550mg / L, total alkalinity 100mg / L, Cl - 450mg / L, S 2- 1mg / L, residual chlorine was not detected.
[0034] Dosing the corrosion test on the rotating coupons after adding chemicals to the test water in the following way:
[0035] Without changing the original chemical YSW105A (purchased from Beijing Yanhua Jilian Company) in the refinery, add sodium bicarbonate to make the total alkalinity reach 200mg / L, add sodium hypochlorite to make the residual chlorine reach 0.2mg / L, add compound Corrosion inhibitor (the aqueous solution containing maleic anhydride / styrene sulfonic acid copolymer and zinc chloride, wherein maleic anhydride / styrene sulfonic acid copolymer is JNH-406 purchased from ...
Embodiment 2
[0037] This example is used to illustrate the corrosion inhibition effect of using the method of the present invention to treat circulating cooling water containing sulfur.
[0038] The test water is the circulating water of a refinery. The water quality is: calcium ion 1250mg / L, total hardness 1810mg / L, total alkalinity 100mg / L, Cl - 530mg / L, S 2- 1mg / L, residual chlorine was not detected.
[0039] Dosing the corrosion test on the rotating coupons after adding chemicals to the test water in the following way:
[0040] Without changing the original chemical YSW105A (purchased from Beijing Yanhua Jilian Company) in the refinery, sodium hypochlorite was added to make the remaining chlorine reach 0.4 mg / L, sodium bicarbonate was added to make the total alkalinity reach 200 mg / L, and compound Corrosion inhibitor (containing the aqueous solution of acrylic acid / styrene sulfonic acid copolymer and zinc nitrate, wherein acrylic acid / styrene sulfonic acid copolymer is AA-SSA purchas...
Embodiment 3
[0042] This example is used to illustrate the corrosion inhibition effect of using the method of the present invention to treat circulating cooling water containing sulfur.
[0043] The test water is the circulating water of an oil refinery. The water quality is: calcium ion 850mg / L, total hardness 1230mg / L, total alkalinity 180mg / L, Cl - 360mg / L, S 2- 1mg / L, residual chlorine was not detected.
[0044] Dosing the corrosion test on the rotating coupons after adding chemicals to the test water in the following way:
[0045] Without changing the original chemical YSW105A (purchased from Beijing Yanhua Jilian Company) in the refinery, add sodium bicarbonate to make the total alkalinity reach 200mg / L, add sodium hypochlorite to make the remaining chlorine reach 0.5mg / L, add compound Corrosion inhibitor (an aqueous solution containing maleic anhydride / allyl sulfonic acid copolymer and zinc sulfate, wherein the maleic anhydride / allyl sulfonic acid copolymer is SY-414 purchased fro...
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