Improvement of water treatment at thermal power plants

Larin, B. M.; Bushuev, E. N.; Larin, A. B.; Karpychev, E. A.; Zhadan, A. V.

doi:10.1134/s0040601515020056

Cited by 16 publications

(10 citation statements)

References 4 publications

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“…Regarding the quantities of breakdown products, it was calculated that 5 mg of completely decomposed ODA produced roughly 0.3 mg of ammonia. 26,87 Furthermore, at 343°C and 15.2 MPa, the total amount of hydrogen, carbon monoxide, and methane equaled 1% of the initial ODA amount. 33,81 Considering that the applied FFA concentrations in power plants are normally quite small and vary between 1 and 5 ppm, it may be stated that the total concentration of hydrogen, carbon monoxide, and methane is negligible and therefore they cannot have an effect on the corrosion development and the protective layer on the metal tubes.…”

Section: Decomposition Products Of Odamentioning

confidence: 94%

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Vidojkovic,

Mijajlovic,

Lindeboom

et al. 2023

Energy Science & Engineering

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Film forming amines (FFA) are corrosion inhibitors added to power plant water. The major concern associated with their application is the thermal stability in the high temperature power plant water medium, along with the risk of decomposition into low molecular weight organic acids that can cause corrosive damages in the water/steam cycle. However, there is still a lack of sufficient data on the thermal stability of FFA corrosion inhibitors. This paper presents a comprehensive critical review and state‐of‐the‐art assessment of the results obtained from studying the thermolysis of FFA corrosion inhibitors in power plant water/steam cycle conditions, highlighting the relevance for practical application and research needs. Temperature, exposure time, initial concentration, and alkalizing agents were identified as key factors influencing the thermal stability of FFA in high temperature power plant water. Organic acids are found in concentrations harmless to metal tubes. Advanced scientific background information and additional research are required on this topic.

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Section: Decomposition Products Of Odamentioning

confidence: 94%

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Vidojkovic,

Mijajlovic,

Lindeboom

et al. 2023

Energy Science & Engineering

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“…The present power generation capacity per capita in the country is 300 kWh. To ensure proper energy, two nuclear power plants of capacity (2×1200MW) are in the process of installation and extensive civil work is going on [1][2]. Water quality has long been an important factor in the operation of thermal and nuclear power plants [3][4].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Water Characteristics of Shiddhirganj 210MW Steam Power Plant, Sirajganj 225MW Combined Cycle Power Plants and Rooppur 2400MW Nuclear Power Plant in Bangladesh: A Comparative Study of Power Plant Grade Water

Salam¹,

Hasan

Rokonuzzaman

et al. 2022

IJEMM

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Water quality has long been an important part of the operation of nuclear and thermal power plants. Water is used as a working and cooling fluid in power plants. The quality of source water to be used in the power plants after treatment should conform to the prescribed values of Physico-Chemical properties like pH, EC, TDS, Alkalinity, Hardness, presence of Chloride content, Silica, and Heavy metals as recommended by technical guidelines. To analyze the water characteristics, water samples were collected from various sources. Two river water samples and a groundwater sample (marked as PP1, PP2, and NPP site) were tested to determine the water properties. The Physico-chemical properties of the water samples were determined using various analytical tests. Heavy metals were also investigated using the Atomic Absorption Spectrophotometric (AAS) process. The Physico-chemical properties of investigated samples were so good as to the recommended values of the World Health Organization (WHO), United States of Public Health (USPH), and Bangladesh Environmental Department. But the values were very far from the recommended values for thermal power plants operation. So, it needs to treat to use in the boilers. Gravitation, Carbon filtration, Ion exchange method, and Reverse Osmosis (RO) are good ways to treat the water before use in power plants. The Padma River water is better than the other two samples when the Physico-chemical characteristics of the sample waters were analyzed to the prescribed levels for the boiler water of a thermal power plant and the secondary water circuit of a third-generation nuclear PWR reactor. The aim of this work is to explore the difference between the source water quality parameters values and those of the recommended values of technical guidelines. To minimize the water treatment cost, a new site for the installation of a power plant project in Bangladesh can be advocated depending on the availability of good quality water.

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“…Transformer oil leakage in accident oil pool, as one of the main water environment pollution risks in Power plants [1] , will bring great environmental responsibility and dispute risk. Existing accident oil pools lacks consideration of environmental risk prevention and accident handling capacity.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the ozonation of transformer oil in wastewater enhanced by hydrocyclone and cavitation

Qu¹,

Cai²,

Zhang³

et al. 2022

J. Phys.: Conf. Ser.

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The treatment of transformer oil wastewater in the accident oil pond with ozone has no secondary pollution to the environment. The cavitation technique was used to enhance the oxygenation process and hydrocyclone separator to do the pretreatment. After transformer oil sewage enters the hydrocyclone, the separation efficiency reached up to 60%, which reduces the processing load of subsequent cavitation device. Through 10min cycle treatment of ozone in a cavitation device, the oil concentration of the imported wastewater was reduced from 50mg/L to below 5 mg/L, which has reached the Class-I discharge standard of industrial water. The optimal operation parameters of cavitation were studied by adjusting the inlet pipe gap and gas-liquid ratio of cavitation.

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Improvement of water treatment at thermal power plants

Cited by 16 publications

References 4 publications

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions

An Analysis of Water Characteristics of Shiddhirganj 210MW Steam Power Plant, Sirajganj 225MW Combined Cycle Power Plants and Rooppur 2400MW Nuclear Power Plant in Bangladesh: A Comparative Study of Power Plant Grade Water

Experimental study on the ozonation of transformer oil in wastewater enhanced by hydrocyclone and cavitation

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