FEEDWATER TREATMENT AT THERMAL POWER PLANT

As a rule, water is used as the working fluid of thermal power equipment, which undergoes a series of phase transformations in steam cycles. Water is useful for its properties and as a result gained such wide popularity. It is important to consider that water is the most accessible, widespread and environmentally friendly substance on Earth. Water has low viscosity, high density, good heat transfer coefficient, low cost, and water does not require disposal. In addition to these properties, water also has a high heat capacity, which makes it an efficient heat transfer medium. This means that it is able to absorb and transfer large amounts of heat without a significant change in temperature. This is especially important in heat transfer systems where heat transfer efficiency plays a key role. It worth noting that water is responsive to temperature regulating. Natural water also has disadvantages, such as the possibility of corrosion processes with the formation of metal oxides (rust) and thus destruction of equipment surfaces, limescale formation on heating surfaces when heated to temperatures above 80 degrees Celsius. Therefore, it is necessary to carry out appropriate physical and chemical treatment of water to ensure all the requirements that applied to the water coolant. Certain quality indicators, processing methods and schemes, as well as equipment protection methods have been established for water. The article presents data on determining the dependence of a number of indicators of water quality taken from the water of the Irtysh River for use at Semey CHPP-1.

1. Water treatment of heating boiler houses / M.Kh. Umarova, A.D. Madaeva, A.A. Dzhamalueva, L.I. Saidova, M.Kh. // Tepsekhodzhaev Notes of a scientist. – 2020. – No. 10. – Р. 83-88.

2. Water quality for boilers // Diasel Engineering URL: https://diasel.ru/article/kachestvo-vody-dlyakotlov/.

3. Birulya V.B. Water treatment of boiler houses [Electronic resource]: textbook / V.B. Birulya; St. Petersburg State University of Architecture and Civil Engineering. –Electronic data. – St. Petersburg: Scientia, 2023. – 6.18 MB; 139 p. – Access mode: https://scientiapub.org/index.php/Sci/catalog/book/50 – Cap. from the screen.

4. Experience in organizing a water chemical regime using film-forming amines at thermal power plants with combined cycle gas units / T.I. Petrova, O.V. Egoshina, N.A. Bolshakova et al // Bulletin of the Moscow Energy Institute. Bulletin of MPEI. – 2017. – No. 6. – P. 44-53.

5. Svyatets V.I. Intra-boiler treatment of boiler water / V.I. Svyatets, Ch.K. Vo // In the collection: MODERN PROBLEMS OF LOGISTICS, ECONOMY, MANAGEMENT IN THE ERA OF GLOBAL CHALLENGES. materials of the II International correspondence scientific and practical conference. Astrakhan, 2023. – Р. 225-232.

6. Petrova T.I. International standards for water and steam quality for drum boilers and waste heat boilers of thermal power plants when using phosphates and NAOH for boiler water treatment / T.I. Petrova, K.A. Orlov, R.B. Dooley // Thermal power engineering. – 2017. – No. 1. – P. 72-78.

7. Samoilov A.V. Chemical water treatment for boiler houses and heat supply points / A.V. Samoilov, A.Yu. Kozlov // Energy saving and water treatment. – 2015. – No. 5(97). – Р. 46-53.

8. Samarkina E.V. Optimization of water chemistry at thermal power plants / E.V. Samarkina, A.I. Krysanova // In the collection: Increasing the efficiency of energy production and use in Siberia. Materials of the All-Russian scientific and practical conference with international participation. 2023. – Р. 272-276.

9. Stepina K.A. Analysis of water treatment methods for boiler plants / K.A. Stepina, M.V. Koryagin // In the collection: VIII All-Russian Science Festival. Collection of reports. – 2018. – Vol. 2. – Р. 202-205.

10. Features of water treatment of steam and hot water boiler houses // Non-profit partnership of engineers URL: https://www.abok.ru/for_spec/articles.php?nid=7665.