Flammability of complex hydrocarbon mixtures in air and nitrogen diluted atmosphere at ambient conditions and at elevated pressures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F24%3A43927718" target="_blank" >RIV/60461373:22320/24:43927718 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0016236123021695?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236123021695?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuel.2023.129555" target="_blank" >10.1016/j.fuel.2023.129555</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flammability of complex hydrocarbon mixtures in air and nitrogen diluted atmosphere at ambient conditions and at elevated pressures

Popis výsledku v původním jazyce

An innovative experimental method was introduced to study flammability limits and limiting oxygen concen-tration of complex hydrocarbon mixtures simulating crude oil vapour composition. Flammability experiments were conducted in a 10L spherical vessel at 25 degrees C and initial pressures of 100 kPa, 1100 kPa and 2600 kPa in air with additional nitrogen. Based on the experimental data, applicability of selected empirical methods and two calculated adiabatic flame temperature based methods was validated for ambient initial conditions. The experimental results confirmed relative decrease below 6.5% for lower flammability limit and below 3% for limiting oxygen concentration with increasing pressure within the examined range. The upper flammability limit increased with initial pressure. Vapour-liquid equilibrium was found to be a constraint in the fuel-rich region at elevated pressures to keep the constant initial composition of the vapour phase. At ambient conditions the calculated adiabatic flame temperature based methods were able to approximate the experimental data well. Empirical mixing rules showed accuracy highly dependent on source literature data.

Název v anglickém jazyce

Flammability of complex hydrocarbon mixtures in air and nitrogen diluted atmosphere at ambient conditions and at elevated pressures

Popis výsledku anglicky

An innovative experimental method was introduced to study flammability limits and limiting oxygen concen-tration of complex hydrocarbon mixtures simulating crude oil vapour composition. Flammability experiments were conducted in a 10L spherical vessel at 25 degrees C and initial pressures of 100 kPa, 1100 kPa and 2600 kPa in air with additional nitrogen. Based on the experimental data, applicability of selected empirical methods and two calculated adiabatic flame temperature based methods was validated for ambient initial conditions. The experimental results confirmed relative decrease below 6.5% for lower flammability limit and below 3% for limiting oxygen concentration with increasing pressure within the examined range. The upper flammability limit increased with initial pressure. Vapour-liquid equilibrium was found to be a constraint in the fuel-rich region at elevated pressures to keep the constant initial composition of the vapour phase. At ambient conditions the calculated adiabatic flame temperature based methods were able to approximate the experimental data well. Empirical mixing rules showed accuracy highly dependent on source literature data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fuel

ISSN

0016-2361

e-ISSN

1873-7153

Svazek periodika

357

Číslo periodika v rámci svazku

Part A

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

129555

Kód UT WoS článku

001074750200001

EID výsledku v databázi Scopus

2-s2.0-85170032267