Impact of natural gas composition on steam thermal plasma assisted pyrolysis for hydrogen and solid carbon production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00579196" target="_blank" >RIV/61389021:_____/23:00579196 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/23:00579196 RIV/60461373:22310/23:43927667 RIV/60461373:22320/23:43927667

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0196890423010944?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0196890423010944?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enconman.2023.117748" target="_blank" >10.1016/j.enconman.2023.117748</a>

Result language

angličtina

Original language name

Impact of natural gas composition on steam thermal plasma assisted pyrolysis for hydrogen and solid carbon production

Original language description

Pyrolysis of simulated natural gas (NG) was studied experimentally in the reactor equipped with a steam thermal plasma torch. Simulated NG consisted of 75 % of methane, 15 % of ethane, 5 % of propane and 5 % of butane. Experimental composition of the output gas was compared with the equilibrium calculations corresponding to the gaseous mixture entering the reactor. NG input flow rate 100 slm was considered the best in terms of agreement between the experimental and calculated compositions. Consequently, for this flow rate, the majority of natural gas was reformed into the mixture of hydrogen and solid carbon. For the NG input flow rates of respectively, 200 slm and 500 slm, a non-negligible amount of unconverted methane (from 37 slm to 155 slm) was found to remain in the output gas. On the other hand, the specific energy requirement with respect to the produced hydrogen was better for 500 slm of NG (1.1–1.6 kWh/m3.H2) than for 200 slm (1.8–2.7 kWh/m3.H2) or 100 slm (3.2–3.6 kWh/m3.H2). In all the studied experimental conditions, practically no CO2 was formed, only a small amount of CO corresponding to oxygen from the steam plasma was detected. A comparison with the previously published works, where methane and natural gas were not distinguished, showed that NG composition can play an important role in the pyrolysis process. In particular, the presence of higher hydrocarbons decreased the effectivity of methane conversion and also reduced the specific energy requirement, with respect to the pure methane pyrolysis.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Energy Conversion and Management

ISSN

0196-8904

e-ISSN

1879-2227

Volume of the periodical

297

Issue of the periodical within the volume

December

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

117748

UT code for WoS article

001096486800001

EID of the result in the Scopus database

2-s2.0-85173606251