Scale inhibitor special for turbid circulating water system of steel mill converter and preparation method thereof

Abstract

The invention relates to a scale inhibitor special for the turbid circulating water system of a steel mill converter and a preparation method thereof. The scale inhibitor comprises the following components in mass percentage: 25 to 40% of sulfonicmethaneaminopolyepoxysuccinic, 20 to 30% of copolymer of maleic and acylic acid, 12 to 30% of fatty alcohol-polyoxyethylene ether, 3 to 5% of oxidized graphene aqueous dispersion, 3 to 6% of zinc sulfate, and 15-40 parts of sodium bicarbonate aqueous solution. All components of the scale inhibitor special for the turbid circulating water system of the steel mill converter synergistically come into play, so that trace amounts of pollutants can be eliminated. After the compounding process of the components, the scale inhibition performance of the scale inhibitor is greatly improved. In this way, the synergistic effect of the physical absorption and the chemical adsorption on pollutants is effectively realized, and the scale inhibitor can be applied in water of a wider pH range and a wider temperature range. Meanwhile, the scale inhibitor also has excellent corrosion-mitigation effect. The scale inhibitor is simple in production process, free of three-wastes discharge, and good in stability and water-soluble performance. The main components of the scale inhibitor are biodegradable, non-toxic, phosphorus-free, pollution-free, corrosion-free, small in dosage and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a scale inhibitor, in particular to a special scale inhibitor for a converter turbid ring water system in a steel plant and a preparation method thereof. Background technique [0002] A large amount of converter turbid ring water will be produced in the production of steel mills. The source is the converter flue gas generated during the smelting process of the converter, which contains a large amount of dust, mainly lime powder and iron oxides. The converter flue gas is generally treated by washing water wet dedusting, and then sent to the chimney for combustion and emission. The washing water is discharged into the primary sedimentation tank through the elevated launder, and recycled after being coagulated and sedimented and cooled by the cooling tower. This water is called converter turbid ring water. Due to the influence of intermittent production of steelmaking, the w...

AI Technical Summary

Problems solved by technology

The soot particles in the water are fine, mainly lime powder and iron oxides, which are scale-type wastewater, and it is difficult to stabilize the water quality

Most of the common water treatment agents are not suitable for converter turbid ring water system. For example, the water treatment agents with corrosion and scale inhibition performance at home and abroad are mainly chromate, silicate, molybdate, nitrite, organic Phosphate and other compounds, chromate and nitrite pollute the environment, silicate has the risk of scaling, and organic phosphate and other phosphorus-containing formulas are easy to cause secondary pollution to water bodies, which do not meet the requirements of green environmental protection, and The performance of the product is uneven, the scale inhibition performance is not high, the function is single, and the treatment ability for lime powder and iron oxide is not strong