Low-zincium organophosphor scale inhibitor for recirculated cooling water process
A corrosion and scale inhibitor, organic phosphorus technology, applied in water/sludge/sewage treatment, descaling and water softening, chemical instruments and methods, etc., can solve problems such as environmental pollution, excessive zinc content, low zinc content, etc. , to achieve the effect of eliminating environmental pollution
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[0016] Example 1
[0017] From February to April 2005, the energy workshop of the cold-rolled sheet plant determined the composition, ratio and dosage of the corrosion and scale inhibitor of the present invention through static scale inhibition test, rotating coupon corrosion test, agent screening test, and agent compatibility test. It is also found that the oxidizing bactericide used has no adverse effect on the corrosion and scale inhibitor of the present invention. The dynamic simulation tests at the end of March and early April of 2005 further verified the performance of the formulation and determined the dosage of the corrosion and scale inhibitor of the present invention. The components and weight percentages of the low-zinc corrosion and scale inhibitor of the present invention are shown in Table 1. .
[0018] Table 1. The content and function of each component in the test formula
[0019] Main components
[0020] The test results show that when the corrosion and ...
Example Embodiment
[0023] Example 2
[0024] The preparation process of the corrosion and scale inhibitor of the present invention: prepare 100 grams of pharmaceutical solution
[0025] Dissolve 22 grams of PBTC with a solid content of 50%, 10 grams of HEDP with a solid content of 50%, 6 grams of organic phosphate, and 20 grams of AA / AMPS / HPA terpolymer with a solid content of 30% in 38.5 grams of purified water. , And then dissolve 3 grams of zinc sulfate heptahydrate in the above solution, and finally add 0.5 grams of hydrogen peroxide and mix well.
[0026] When the prepared 100g pharmaceutical solution is added to the cooling water at a concentration of 100mg / L, each single component is the required concentration, namely PBTC, HEDP, organic phosphate, AA / AMPS / HPA, zinc in circulating water The effective concentrations of ions are 11mg / L, 5mg / L, 3mg / L, 6mg / L and 0.68mg / L, respectively.
Example Embodiment
[0027] Example 3
[0028] Preparation process: prepare 100 grams of pharmaceutical solution
[0029] Dissolve 22 grams of PBTC with a solid content of 50%, 10 grams of HEDP with a solid content of 50%, 6 grams of organic phosphate, and 20 grams of AA / AMPS / HPA terpolymer with a solid content of 30% in 39.5 grams of purified water. , Then dissolve 2 grams of zinc sulfate heptahydrate in the above solution, and finally add 0.5 grams of hydrogen peroxide and mix well.
[0030] When the prepared 100g pharmaceutical solution is added to the cooling water at a concentration of 100mg / L, each single component is the required concentration, namely PBTC, HEDP, organic phosphate, AA / AMPS / HPA, zinc in circulating water The effective concentrations of ions are 11mg / L, 5mg / L, 3mg / L, 6mg / L and 0.45mg / L, respectively.
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