Экспериментальное исследование реакции н-бутанола с кислородом за ударными волнами АРАС методом


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Experimental study of reaction of n-butanol with oxygen behind shock waves using ARAS method

This paper presents new data on the time profiles of the concentration of atomic oxygen obtained during high-temperature oxidation of n-butanol behind reflected shock waves in the temperature range of 1600–2600 K at pressures of 2–3 bar. The kinetics of the reaction of n-C4H9OH with atomic oxygen has been studied. As a source of oxygen atoms, a small amount of nitrous oxide N2O was added to the mixture. Quantitative measurements of the concentration profiles of oxygen atoms were carried out using atomic resonance absorption spectroscopy (ARAS) on the resonance line of the O atom (λ= 130.5 nm). Kinetic analysis of the obtained data was carried out using the Chemkin package. The experimental results obtained are compared with actual kinetic combustion schemes of n-butanol. It is shown that the kinetic schemes of n-butanol combustion available in the literature in some cases do not exactly agree with the experimental results. An analysis of possible additions to the existing kinetic schemes was carried out. As a result, it was suggested possible improvement to the existing kinetic schemes for the combustion of n-butanol at high temperatures.

biofuel, n-butanol, ARAS, shock tube.

DOI: http://doi.org/10.33257/PhChGD.20.1.799

Никита Сергеевич Быстров, Александр Валентинович Емельянов, Александр Викторович Еремин, Павел Иванович Яценко

Том 20, выпуск 1, 2019 год



В данной работе представлены новые данные о временных профилях концентрации атомарного кислорода, полученных при высокотемпературном окислении н-бутанола за отраженными ударными волнами в диапазоне температур 1600−2600 K при давлениях 2-3 бар. Изучена кинетика реакции n-C4H9OH с атомарным кислородом. В качестве источников атомов кислорода в смесь добавлялось небольшое количество закиси азота N2O. Количественные измерения профилей концентрации атомов кислорода проводились методом атомно-резонансной абсорбционной спектроскопии (АРАС) на резонансной линии атома О (λ = 130.5 нм). Кинетический анализ полученных данных проводился с использованием пакета Chemkin. Проведено сравнение полученных экспериментальных результатов с актуальными кинетическими схемами горения н-бутанола. Показано, что имеющиеся в литературе кинетические схемы горения н-бутанола в ряде случаев не совсем точно согласуются с экспериментальными результатами. Проведен анализ возможных дополнений в применяемые кинетические схемы. В результате удалось улучшить существующие кинетические схемы горения н-бутанола при высоких температурах.

биотопливо, н-бутанол, АРАС, ударная труба.

DOI: http://doi.org/10.33257/PhChGD.20.1.799

Никита Сергеевич Быстров, Александр Валентинович Емельянов, Александр Викторович Еремин, Павел Иванович Яценко

Том 20, выпуск 1, 2019 год



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