TY JOUR TI Modeling of the synthesis plant of 55% formalin solution, calculation of the material balance and thermal loads of devices KW formalin KW oxidative dehydrogenation of methanol KW Aspen Plus KW mathematical modeling KW mass and energy balance JO Oil and gas technologies and environmental safety AU Shishanov, M.. AU Alemasova, O.. PY 2026 IS 2026 PB Astrakhan State Technical University