DIRECT COAL LIQUEFACTION YIELD IMPROVEMENT BY PROCESS PARAMETERS OPTIMIZATION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F19%3AN0000043" target="_blank" >RIV/62243136:_____/19:N0000043 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.icct.cz/AngiologyKlon-ICCT/media/system/2019/ICCT-2019-Proceedings.pdf" target="_blank" >https://www.icct.cz/AngiologyKlon-ICCT/media/system/2019/ICCT-2019-Proceedings.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

DIRECT COAL LIQUEFACTION YIELD IMPROVEMENT BY PROCESS PARAMETERS OPTIMIZATION

Popis výsledku v původním jazyce

Direct coal liquefaction (DCL) is a suitable way of producing synthetic fuels from low-rank coals, especially when the waste-derived materials are co-processed during the process. However, direct liquid product yield is affected by many factors such as temperature, pressure, reaction time, heating rate, type of the solvent and/or even the coal itself. In this research, we attempted to maximize the liquid yields by optimizing the reaction conditions using coal impregnated by 1% weight of molybdenum. Waste tire pyrolysis oil was used as a feedstock. For this purpose, DCL reactions were carried out in an autoclave. The solvent to coal ratio was 2:5 and the initial hydrogen pressure was 34.4 bar. To improve the process efficiency, three reaction times (30, 60, 120 min.), two heating rates (5.6, 8.3 °C/min) and two reaction temperatures (400, 420 °C), were tested. The best liquid yield was found for the test with the shortest reaction time, lower temperature and slower heating rate. For the reactions with a temperature of 420 °C, higher heating rate and different reaction times, a significant increment in gas formation and a slight decrease in the formation of solids was found. Surprisingly, for the same reaction temperature and slower heating rate, the opposite trend was observed. Thus, the most significant parameters affecting direct liquid yield for the investigated set of materials seemed to be the heating rate, reaction time and temperature respectively.

Název v anglickém jazyce

DIRECT COAL LIQUEFACTION YIELD IMPROVEMENT BY PROCESS PARAMETERS OPTIMIZATION

Popis výsledku anglicky

Direct coal liquefaction (DCL) is a suitable way of producing synthetic fuels from low-rank coals, especially when the waste-derived materials are co-processed during the process. However, direct liquid product yield is affected by many factors such as temperature, pressure, reaction time, heating rate, type of the solvent and/or even the coal itself. In this research, we attempted to maximize the liquid yields by optimizing the reaction conditions using coal impregnated by 1% weight of molybdenum. Waste tire pyrolysis oil was used as a feedstock. For this purpose, DCL reactions were carried out in an autoclave. The solvent to coal ratio was 2:5 and the initial hydrogen pressure was 34.4 bar. To improve the process efficiency, three reaction times (30, 60, 120 min.), two heating rates (5.6, 8.3 °C/min) and two reaction temperatures (400, 420 °C), were tested. The best liquid yield was found for the test with the shortest reaction time, lower temperature and slower heating rate. For the reactions with a temperature of 420 °C, higher heating rate and different reaction times, a significant increment in gas formation and a slight decrease in the formation of solids was found. Surprisingly, for the same reaction temperature and slower heating rate, the opposite trend was observed. Thus, the most significant parameters affecting direct liquid yield for the investigated set of materials seemed to be the heating rate, reaction time and temperature respectively.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

PROCEEDINGS of the 7th International Conference on Chemical Technology

ISBN

978-80-88307-00-6

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

225-229

Název nakladatele

Czech Society of Industrial Chemistry

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

1. 1. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000515696600040