### Abstract

Iwai, Y., Yamamoto, H., Shimizu, T. and Arai, Y., 1990. Correlation of solubilities of coal liquefaction products in supercritical carbon dioxide and solubility enhancements using equation of state. The solubility behavior in the supercritical region is essentially important in process design of supercritical fluid extraction. An entrainer is often used to enhance the solubilities of high boiling components in the gas phase. The cubic equation of state having three constants, recently proposed by Yu et al., was applied to correlate the solubilities of coal liquefaction products (solid components) in supercritical CO_{2} and the solubility enhancements by entrainers. Conventional mixing rules were adopted for calculation of cross factors a_{ij}, b_{ij}, and c_{ij}. Binary parameters k_{ij} for calculation of a_{ij}, and l_{ij} for b_{ij} and c_{ij} were used. The binary parameters k_{ij} and l_{ij} (i.e. cross factors a_{ij}, b_{ij}, and c_{ij}) were determined to represent well the solubility data. Further, they were correlated with pure component properties of supercritical CO_{2} and solid components such as critical volume, solid volume, number of atoms in molecule except for hydrogen, and solubility parameter. By using the empirical equations for calculation of the binary parameters k_{ij} and l_{ij}, the solubilities of solid components in supercritical CO_{2} were calculated with good accuracy.

Original language | English |
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Title of host publication | Process Metallurgy |

Pages | 1695-1700 |

Number of pages | 6 |

Edition | PB |

DOIs | |

Publication status | Published - Jan 1 1992 |

### Publication series

Name | Process Metallurgy |
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Number | PB |

Volume | 7 |

ISSN (Print) | 1572-4409 |

### All Science Journal Classification (ASJC) codes

- Geotechnical Engineering and Engineering Geology
- Industrial and Manufacturing Engineering

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## Cite this

*Process Metallurgy*(PB ed., pp. 1695-1700). (Process Metallurgy; Vol. 7, No. PB). https://doi.org/10.1016/B978-0-444-88677-4.50099-4