草榴短视频

36 theses and graduation papers on topical topics in the energy sector were submitted to the competition from PJSC TGC-1. The projects were reviewed by the company's experts and evaluated for the relevance of the topic to the industry, the quality of the study and the effectiveness of the project.

Mstislav Korczak, a student at the Higher School of Technology and Energy of St. Petersburg State University of Industrial Technologies and Design, presented a research paper on reducing harmful effects on the environment and ecology in the energy sector. The object of the study was the technology of CO2 freezing from gas fuel combustion products during their expansion in the turbo expander of a gas refrigerating machine. Mstislav assessed the effectiveness of using this technology in the conditions of real production of TGC-1.

In addition to the research part, the young scientist has developed a combined scheme for low-temperature carbon dioxide separation based on the ES-1 gas turbine unit of the Central Thermal Power Plant of PJSC TGC-1. In addition to the existing gas turbine plant equipment, he additionally included a turbo expander unit, a regenerator unit, heat exchangers, and a separation and pressing unit in the scheme. The supercharger of the turbo expander installation included in the scheme raises the pressure at the outlet of the turbine at the existing degrees of its increase and decrease in the compressor and turbine of the gas turbine installation. This makes it possible to expand the fuel combustion products in the turbo expander to a pressure close to atmospheric pressure.

"The heat exchanger behind the supercharger can be used for additional water heating, while reducing the air temperature at the compressor inlet. The heat exchanger behind the recovery boiler is used to lower the temperature of the fuel combustion products to the ambient level, which will reduce the thermal load on the regenerators.

The regenerator unit is necessary to further lower the temperature of the fuel combustion products to values close to the saturation temperature of CO2 in the solid state. The heat-intensive nozzle of the regenerator is an aluminum corrugated tape. At the outlet of the turbo expander, the stream will contain CO2 crystals, which are separated from the stream in the separator, then carbon dioxide snow in the compactor is formed into blocks of dry ice. After the separator, the flow of fuel combustion products is used to cool the nozzle of one of the regenerators," says Mstislav.