Assessment of coal liquids as refinery feedstocks

Zhou, P

doi:10.2172/6704082

1992

DOI: 10.2172/6704082

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Assessment of coal liquids as refinery feedstocks

P Zhou¹

Abstract: Recommendations are made in Section 8.0 for systematic refining studies on two-stage coal liquids, paying special attention to the cut points of various coal liquid fractions, including an oxygen-rich fraction (350-450°F) for phenolics extraction. Engine tests for coal-derived gasoline and diesel fuel products are suggested. Economic studies on coal-liquid refining schemes, product slates, and refining process viabilities are strongly recommended. Further studies on physical and thermodynamic properties to dev… Show more

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Cited by 2 publications

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Process modeling of direct coal-biomass to liquids (CBTL) plants with shale gas utilization and CO2 capture and storage (CCS)

Jiang

Bhattacharyya

2016

Applied Energy

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Direct coal liquefaction (DCL) technologies have been commercially demonstrated for producing transportation fuels from non-petroleum sources. However, significant amount of hydrogen is required in the DCL process due to the low H/C ratio in coal. As a result, DCL processes are usually associated with a high level CO 2 emission from hydrogen production units. Hence, direct coal biomass to liquids (CBTL) processes with CO 2 capture and storage (CCS) and shale gas utilization are proposed in this work as an option for reducing CO 2 emission. In this study, the focus is on process simulation and calculation of material and energy balances of novel direct CBTL plants, which can be used as a basis for further studies, such as optimization, techno-economic analysis and life-cycle analysis. In this process, coal with moderate amount of biomass is converted into syncrude through reaction with the hydrogen-donor solvent and gaseous hydrogen in a catalytic two-stage liquefaction unit. Hydrogen required for the liquefaction and product upgrading unit is produced from the liquefaction residue partial oxidation unit and the shale gas steam reforming unit or from the coal/biomass/residue co-gasification unit. Different CCS technologies are evaluated to achieve 90% overall carbon capture if high extent of CO 2 capture is considered. Results of individual plant sections are validated with the existing data, if available. Sensitivity studies have been conducted to analyze the effects of key operating parameters and design parameters, such as the sources of hydrogen, CCS technologies, extent of CCS, and biomass/coal ratio.

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Process modeling of direct coal-biomass to liquids (CBTL) plants with shale gas utilization and CO2 capture and storage (CCS)

Jiang

Bhattacharyya

2016

Applied Energy

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Effect of hydrogenation of liquefied heavy oil on direct coal liquefaction

Shan

Shu

et al. 2017

Fuel

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Assessment of coal liquids as refinery feedstocks

Cited by 2 publications

References 5 publications

Process modeling of direct coal-biomass to liquids (CBTL) plants with shale gas utilization and CO2 capture and storage (CCS)

Process modeling of direct coal-biomass to liquids (CBTL) plants with shale gas utilization and CO2 capture and storage (CCS)

Effect of hydrogenation of liquefied heavy oil on direct coal liquefaction

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