Corrosion and Scale Inhibition Properties by Phosphate-free and Nitrogen-free Scale Inhibitor in Cooling Water System

2014 ◽  
Vol 51 (3) ◽  
pp. 248-256 ◽  
Author(s):  
Huchuan Wang ◽  
Yuming Zhou ◽  
Guangqing Liu ◽  
Jingyi Huang ◽  
Qingzhao Yao ◽  
...  
Keyword(s):  
Water System ◽  
Cooling Water ◽  
Scale Inhibitor ◽  
Cooling Water System ◽  
Scale Inhibition

scholarly journals Study on association solubilization and inhibition of scale in recirculating cooling water system under S-HGMF

2021 ◽  
Author(s):  
Xin Zhao ◽  
Suqin Li ◽  
Shuaishuai Han ◽  
Jianjiang Jin ◽  
Peng Zhang
Keyword(s):  
Surface Tension ◽  
Water System ◽  
Cooling Water ◽  
Crystal Form ◽  
Magnetic Flux Density ◽  
Form Change ◽  
Circulating Water ◽  
Cooling Water System ◽  
Scale Inhibition ◽  
Change Of Scale

Abstract The present study conducted an investigation on the effect of Superconducting-High Gradient Magnetic Field (S-HGMF) in the association solubilization of recirculating cooling water and the crystal form change of scale. The effects of magnetic flux density, flow rate and cycle-index on the solubility of scale-forming ions were investigated, and the effects of viscosity and surface tension on the molecular internal energy and order degree of circulating water were analyzed. The scale was ground and mixed with water and placed in a S-HGMF system to study the effect of S-HGMF on the crystal form change of CaCO3. The experimental results showed us that S-HGMF could increase the solubility of scale-forming ions. It could enhance the interaction between water molecules by increasing viscosity and reducing surface tension, so as to improve the stability of water quality, reduce ion precipitation, and achieve the effect of scale inhibition. At the same time, it could also change the crystal structure of CaCO3, promote the transformation of calcite to aragonite, and realize the purpose of scale inhibition. In a word, S-HGMF treatment can effectively solve the scaling problem of recirculating cooling water system, which provides a reference for scale inhibition of recirculating cooling water.

scholarly journals New Estimation of the Dosage of Scale Inhibitor in the Cooling Water System

2011 ◽  
Vol 8 (4) ◽  
pp. 1881-1885 ◽  
Author(s):  
Jiang Jiaomei ◽  
Xu Yanhua
Keyword(s):  
Ph Value ◽  
Water System ◽  
Cooling Water ◽  
Water Systems ◽  
Organic Phosphate ◽  
Scale Inhibitor ◽  
Cooling Water System ◽  
Metastable Zone ◽  
Verification Test ◽  
Critical Ph

In the cooling water system, excessive use of organic phosphate scale inhibitors is harmful to environment. Reducing the dosage of the organic phosphate scale inhibitor is important. A self-made jacketed crystallizer was used in this experiment. The critical pH values have been determined in cooling water systems with series of Ca2+concentrations by adding different concentration of the scale inhibitor ATMP (Amino Trimethylene Phosphonic Acid) according to the calcium carbonate Metastable zone theory. A model equation at 45 °C and pH=9 was proposed to estimate the lowest dose of the scale inhibitor ATMP. The measured pH value was approximate to the expected pH value in two cooling water systems through verification test.

Effect of diesel on corrosion inhibitors and application of bio-enzyme corrosion inhibitors in the laboratory cooling water system

2015 ◽  
Vol 93 ◽  
pp. 293-300 ◽  
Author(s):  
Fang Liu ◽  
Li Zhang ◽  
Xi Yan ◽  
Xianhui Lu ◽  
Ya Gao ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Water System ◽  
Cooling Water ◽  
Cooling Water System

Effect of Mixed-Species Biofilm on Copper Surfaces in Cooling Water System

2014 ◽  
Vol 24 (2) ◽  
pp. 848-858 ◽  
Author(s):  
Nihal Doğruöz Güngör ◽  
Ayşın Çotuk ◽  
Esra Ilhan-Sungur ◽  
Nurhan Cansever
Keyword(s):  
Water System ◽  
Cooling Water ◽  
Mixed Species ◽  
Copper Surfaces ◽  
Cooling Water System
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