Improving the steam-cracking efficiency of naphtha feedstocks by mixed/separate processing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920752" target="_blank" >RIV/60461373:22310/20:43920752 - isvavai.cz</a>
Result on the web
<a href="http://doi.org/10.1016/j.jaap.2019.104768" target="_blank" >http://doi.org/10.1016/j.jaap.2019.104768</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jaap.2019.104768" target="_blank" >10.1016/j.jaap.2019.104768</a>

Result language
angličtina
Original language name
Improving the steam-cracking efficiency of naphtha feedstocks by mixed/separate processing
Original language description
Naphtha feedstock used for the steam-cracking process is typically blended from several hydrocarbon source streams of composition varying in a broad range. This study aims at evaluation of the potential yield improvement, which could be obtained by separate steam-cracking of light and heavy sub-streams using tailored process parameters for each of the sub-streams. Laboratory pyrolysis reactor was used for both separate and blend processing of the naphtha feedstocks in the temperature range of 760–810 C, and different blending ratios. At maximum temperature, pyrolysis of light naphtha provides ethylene yield 24.1 wt. %, while only 13.6 wt. % of ethylene was obtained from heavy naphtha. Both, ethylene and propylene yield express decreasing trend with increasing content of heavy naphtha in blended feedstock. Obtained results suggest possibility of mutual effects between components resulting in non-linear dependence of products yields on the blending ratio, therefore a principle of additivity cannot be assumed. A potential for improvement of ethylene yield by 1.1 wt. % is shown on example of processing scenario.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering

Project
<a href="/en/project/LO1613" target="_blank" >LO1613: Future materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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