Cooling Water Screening Test of Corrosion and Scale Inhibitors

2011 ◽  
Vol 694 ◽  
pp. 794-798
Author(s):  
Mo Jie Sun ◽  
Yu Lei ◽  
Li Juan Xi ◽  
Yong Hua Liu ◽  
Xu Wang
Keyword(s):  
Power Plant ◽  
Corrosion Inhibition ◽  
Screening Test ◽  
Cooling Water ◽  
Scale Inhibitor ◽  
Circulating Cooling Water

Through to a certain power plant circulating cooling water do laboratory static scale and corrosion inhibition experiments, identified best dosage of three scale inhibitor A、B and C, which had improved the concentration rate of the circulating cooling water and had played an important role in preventing the circulation cooling water corrosion and scaling.

scholarly journals Experimental study on scale and corrosion inhibition of circulating cooling water in power plant

2020 ◽  
Vol 474 ◽  
pp. 052104
Author(s):  
Shiyu Zhou ◽  
Chunbo Zhang ◽  
Jianxin Zhang ◽  
Xiyang Liu ◽  
Jingting Hu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Power Plant ◽  
Corrosion Inhibition ◽  
Cooling Water ◽  
Circulating Cooling Water

Synthesis, characterization and performance evaluation of an environmentally benign scale inhibitor IA/AMPS co-polymer

2019 ◽  
Vol 43 (24) ◽  
pp. 9472-9482 ◽  
Author(s):  
Chuanchuan Cui ◽  
Shuguang Zhang
Keyword(s):  
Performance Evaluation ◽  
Cooling Water ◽  
Water Systems ◽  
Environmentally Benign ◽  
Scale Inhibitor ◽  
Circulating Cooling Water ◽  
And Performance

An IA/AMPS co-polymer is a promising scale inhibitor applied to circulating cooling water systems against CaCO3and CaSO4.

Study on Biological Aerated Filter as Enhanced Pretreatment Process of Coagulation and Sedimentation

2013 ◽  
Vol 726-731 ◽  
pp. 1940-1944 ◽  
Author(s):  
Liang Shen ◽  
Han Xiao ◽  
Wan Qiu Yang ◽  
De Ren Miao ◽  
Xiao Ming Li
Keyword(s):  
Power Plant ◽  
Water System ◽  
Cooling Water ◽  
Ammonia Nitrogen ◽  
Secondary Effluent ◽  
Biological Aerated Filter ◽  
Sedimentation Process ◽  
Cooling Water System ◽  
Circulating Cooling Water ◽  
Aerated Filter

Using coagulation and sedimentation process in the advanced treatment of urban secondary effluent which can be recycled to circulating cooling water system in power plant is only perform well on CODCrand turbidity removal. But the concentrations of organic matter and NH3in effluent can not meet the requirements of circulating cooling water. Therefore, in this study, the feasibility of biological aerated filter (BAF) as a pretreatment enhancing coagulation and sedimentation process was discussed. Achieved by controlling the two operating modes: (1) secondary effluentcoagulation and sedimentationeffluent; (2) secondary effluent BAFcoagulation and sedimentation effluent.The results show that the BAF pretreatment removes ammonia nitrogen effectively, and the turbidity and CODCrof effluent of BAF-coagulation sedimentation process is much lower than individual coagulation and sedimentation process. The final effluent qualities meet the requirements of circulating cooling water system in power plant.

Research and Discussion on Electro-Magnetic Treatment in Circulating Cooling Water of Power Plant

2013 ◽  
Vol 732-733 ◽  
pp. 382-386
Author(s):  
Ni Zhang Xiao ◽  
Nan Zhang Xiao ◽  
Long Wu Wen ◽  
Rui Ju Zhao ◽  
Chun Lei Zhang
Keyword(s):  
Power Plant ◽  
Chemical Treatment ◽  
Power Plants ◽  
Water System ◽  
Cooling Water ◽  
Magnetic Treatment ◽  
Treatment Technology ◽  
Cooling Water System ◽  
Circulating Cooling Water ◽  
Electro Magnetic

The effects of anti-scale, anti-corrosion and disinfection of circulating cooling water with electro-magnetic treatment and chemical treatment in the laboratory are compared. The applications of electro-magnetic treatment in power plants are summarized and discussed. The results of both experiments and applications in power plants show that the electro-magnetic treatment can be used in particular conditions, but the development of electro-magnetic treatment technology is immature. This technology used in circulating cooling water system in power plants should be further proved by more experiments and field applications.

Study on Enhanced Pretreatment Process of Coagulation Sedimentation by BAF

2011 ◽  
Vol 71-78 ◽  
pp. 3188-3192
Author(s):  
Liang Shen ◽  
He Li Wang ◽  
Jing Xian Qi ◽  
Hun Chao Sun
Keyword(s):  
Power Plant ◽  
Water System ◽  
Cooling Water ◽  
Secondary Effluent ◽  
Turbidity Removal ◽  
Sedimentation Process ◽  
Cooling Water System ◽  
Circulating Cooling Water ◽  
Aerated Filter ◽  
Final Effluent

Using coagulation sedimentation process in the advanced treatment of urban secondary effluent which can be recycled to circulating cooling water system in power plant is only perform well on turbidity removal. But the concentrations of organic matter and NH3in effluent can not meet the requirements of circulating cooling water. Therefore, the feasibility of biological aerated filter (BAF) as a pretreatment enhancing coagulation sedimentation process was studied. The results show that the BAF pretreatment removes NH3effectively, and the turbidity and CODCrof effluent of BAF-coagulation sedimentation process is much lower than individual coagulation sedimentation process. The final effluent qualities meet the requirements of circulating cooling water system in power plant.

scholarly journals Optimization for Circulating Cooling Water Distribution of Indirect Dry Cooling System in a Thermal Power Plant under Crosswind Condition with Evolution Strategies Algorithm

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1167
Author(s):  
Zhao Li ◽  
Huimin Wei ◽  
Tao Wu ◽  
Xiaoze Du
Keyword(s):  
Heat Exchanger ◽  
Power Plant ◽  
Ambient Temperature ◽  
Water Distribution ◽  
Cooling System ◽  
Thermal Power ◽  
Cooling Water ◽  
Evolution Strategies ◽  
Circulating Cooling Water ◽  
Dry Cooling

Crosswind has an adverse impact on the performance of an indirect dry cooling system. In order to mitigate the adverse influence, this study redistributed the circulating cooling water among air-cooled heat exchanger sectors so that the performance of the indirect dry cooling system could be improved. An evolution strategies algorithm combined with numerical effectiveness-based heat exchanger model was established to minimize the operation costs of the whole system. Based on a 660 MW practical power plant, optimal circulating cooling water operation strategies under varied crosswind speeds and ambient temperatures were calculated to show its application. According to the calculated results, the performance of the indirect dry cooling system could be enhanced by optimizing circulating cooling water distribution under any crosswind speed, especially under high ambient wind speeds. There is a slight promotion of the coal savings with a rise in ambient temperature: improvements of about 5%. The standard coal consumption rate could save as much as 2.50 g/kWh under crosswind speed of 10 m s−1 and ambient temperature of 32 °C, compared to the 0.1 g/kWh under crosswind speed of 2 m s−1 and ambient temperature of 32 °C.

Preparation and Performance Research of the Environment-Friendly Corrosion and Scale Inhibitor

2014 ◽  
Vol 881-883 ◽  
pp. 604-609 ◽  
Author(s):  
Yan Min Chen ◽  
Cai Xia Sun ◽  
Hui Wu Xu ◽  
Jin Ying Wu ◽  
Chang Shan Huang
Keyword(s):  
Water Treatment ◽  
Cooling Water ◽  
Scale Inhibitor ◽  
Environment Friendly ◽  
Scale Inhibition ◽  
Circulating Cooling Water ◽  
Treatment Agent ◽  
Simulated Test ◽  
And Performance ◽  
Performance Research

A new non-phosphorus composite water treatment agent m (PASP) : m (PESA) : m (HPMA) : m (BTA) = 8:12:10:5 was developed from polyaspartic acid (PASP), polyepoxysuccinic acid (PESA), hydrolyzed polymaleic anhydride (HPMA) and benzotriazole (BTA). The performance of corrosion and scale inhibition were evaluated by rotary hanging-piece, electrochemical and bubble experiments. The corrosion testing piece was characterized by SEM. The results show that the new environment-friendly composite water treatment agent has good performance of corrosion and scale inhibition. Further dynamic simulated test also indicates that the water treatment agent meet the use demand of circulating cooling water.

scholarly journals Synthesis, characterization and corrosion inhibition behavior of 2-aminofluorene bis-Schiff bases in circulating cooling water

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17816-17828 ◽  
Author(s):  
Wenchang Wei ◽  
Zheng Liu ◽  
Chuxin Liang ◽  
Guo-Cheng Han ◽  
Jiaxing Han ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Polarization Curve ◽  
Potentiodynamic Polarization ◽  
Cooling Water ◽  
Potentiodynamic Polarization Curve ◽  
Circulating Cooling Water

Two new bis-Schiff bases, namely 2-bromoisophthalaldehyde-2-aminofluorene (M1) and glutaraldehyde 2-aminofluorene (M2) were synthesized and were characterized, the potentiodynamic polarization curve confirmed that they were anode type inhibitors.

scholarly journals Organic Phosphorus Compounds as Inhibitors of Corrosion of Carbon Steel in Circulating Cooling Water: Weight Loss Method and Thermodynamic and Quantum Chemical Studies

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Liang Liu ◽  
Ting-Ting Cao ◽  
Qi-Wei Zhang ◽  
Chong-Wei Cui
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Organic Phosphorus ◽  
Cooling Water ◽  
Circulating Cooling Water ◽  
Weight Loss Method ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method

Circulating cooling water plays an important role in industrial water use. In this study, the corrosion inhibition effects of PBTCA, HEDP, and ATMP organic phosphorus inhibitors were investigated using the weight loss method by varying the dosage of inhibitors, ClO2 concentrations, and pH values on carbon steel in recirculating cooling water with a low concentration of ClO2 solution. The results showed that the three corrosion inhibitors had a satisfactory corrosion inhibition effect and that corrosion inhibition efficiency is positively correlated with the concentration of organic phosphorus inhibitors and pH. The average corrosion inhibition efficiency of the three inhibitors was about 80% at the concentration of inhibitors = 35 mg/L, pH = 9.0, and the concentration of ClO2 = 7.0 mg/L, of which the single-phosphorus molecular corrosion inhibitor proved to be the best inhibitor. When the ClO2 concentration was 7 mg/L, the corrosion inhibition efficiencies of the three corrosion inhibitors were relatively stable. Using the density functional theory (DFT) algorithm in the Gaussian 09 program, the optimization calculation was completed by the B3LYP/6-31G (d, p) method at the microlevel. The molecular structures of the three organic phosphorus inhibitors and the number of phosphorus-containing atoms were compared to the sustained-release properties. Organic phosphorus inhibitors, as an electronic buffer, not only provided electrons but also received electrons. They formed a complex with iron and zinc ions in water in order to attach to the surface of the carbon steel and to alleviate corrosion. In addition, the adsorption with a metal surface followed the Langmuir adsorption isotherm.

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