The analysis of mode setting tests for the TПП-210A boiler at the Trypillia Thermal Power Station
Students Name: Mohyla Serhii Arturovych
Qualification Level: magister
Speciality: Thermal Power Plants
Institute: Institute of Power Engineering and Control Systems
Mode of Study: full
Academic Year: 2020-2021 н.р.
Language of Defence: ukrainian
Abstract: Mohyla S. A. , Kovalenko T. P. (supervisor). The analysis of mode setting tests for the TПП-210A boiler at the Trypillia Thermal Power Station. Master’s thesis. - Lviv Polytechnic National University, Lviv, 2020. Extended abstaract. The regime-adjusting works include ecological and thermal tests [1], which are the most economical and the most productive methods of energy saving. They are carried out during the commissioning phase. All these sets of works and tests allow to find problems during the process of using boilers, to make a complete action plan to eliminate various shortcomings [2]. Master’s thesis the issues of the current state and prospects of development of the fuel and energy complex (FEC) of Ukraine, methods of solid fuel combustion and mode-adjusting tests of the boiler TPP-210A are considered. Study object - boiler TPP-210A of Trypillya thermal power station (TPS). Scope of research - mode-adjusting tests on the TPP-210A boiler at burning of solid fuel with different characteristics from design imported from the Republic of South Africa (South Africa). Goal of the research: conducting commissioning tests to ensure the possibility of safe and economical combustion of solid fuels with technical characteristics different from the design on the boiler of Trypillya TPS. Adjustment of boiler and dust system mode map based on test results. In the work, the optimal sequence of the following works is developed: - search and elimination of problems in the efficiency of the equipment; - checking the documentation for compliance with the existing and installed set of equipment; - optimization of operating modes at different load levels; - determination of the composition of the source gases. Based on the above general requirements, a variant of the structural block diagram of pre-commissioning actions for boilers is built. After that, in case of obtaining the necessary data, you can develop mode maps for the boiler [3]. This is a document compiled on the basis of mode-adjusting and balance tests, which contains the main operational and control parameters of the boiler. The boiler mode map helps to operate it correctly [4]. Over time, the mode of operation of the boiler may change due to the modes of loading and replacement of parts of the boiler. The adjustment of the boiler on the basis of the obtained data and their processing, allows to identify shortcomings in its condition and implement a set of measures that can increase overall efficiency: optimize the levels of excess air in different parts of the gas path, exhaust gas temperature [5]. As a result of the work, conclusions were made about the use of non-design type of South Africa. The schematic diagram of the boiler unit TPP-210A of Trypillya TPS and the equipment of the steam-water tract is described. Mode-adjusting tests of the TPS power unit with TPP-210A boiler have been performed. A regime map of the boiler has been compiled, based on the results of which it is possible to see safe and slagless combustion of solid fuel imported from South Africa without illumination with highly reactive fuel. When burning solid fuel with different from the design technical characteristics (coal from South Africa) provides stable operation of the boiler with the nominal parameters of superheated steam and a satisfactory yield of liquid slag. The temperature of hot steam and industrial superheat steam is maintained at the nominal level. The system of automatic regulation and technical means of automation are chosen, the scheme of automation of the boiler TPP-210A is developed and described, and also the specification of devices and means of automation is made. Keywords: boiler, excess air coefficient, boiler efficiency, dust system, mode map, solid fuel. References: 1. Trembovlya VI, Finger ED, Avdeeva AA (1977). "Thermal tests of boiler plants". Moscow: Energy. 2. MU 34-70-041-83. (1983). Methodical instructions for determining the content of nitrogen oxides in the flue gases of boilers (express methods). Moscow: Soyuztechenergo. 3. Normative method. (1973). Thermal calculation of boiler units. Moscow: Energy. 4. GKD 34.09.103-96. (1996). Calculation of reporting technical and economic indicators of power plants on thermal efficiency of equipment. Kyiv: UNPO "Energoprogress". 5. Pecker J. L. (1977). Thermal calculations on the given characteristics of fuel. Moscow: Energy.