Hydrocracking of vacuum residue with activated carbon in supercritical hydrocarbon solvents

Tran Tan Viet, Jae Hyuk Lee, Jae Wook Ryu, Ik Sung Ahn, Chang-Ha Lee

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Hydrocracking of vacuum residue with activated carbon was conducted in a batch reactor with two types of supercritical hydrocarbon solvents, aromatic hydrocarbons (m-xylene and toluene) and normal alkane hydrocarbons (n-hexane and n-dodecane). The supercritical reactions were performed at 400°C with H 2 partial pressures of 3.45 MPa and 6.89 MPa. The supercritical hydrocarbon solvent affected the levels of conversion and coke formation as well as the distribution of oil products (naphtha, middle distillate, vacuum gas oil, and residue). The mass ratio of each oil product to the unreacted residue differed among the supercritical solvents. Compared to the product profile in n-alkane solvents, aromatic solvents yielded much smaller naphtha fractions and larger middle distillate fractions. An increase of surface acidity of the activated carbon led to the conversion improvement observed in the supercritical reactions. However, the increased partial pressure of hydrogen was not associated with significant changes in conversion. High conversion (69.2 wt.%) with low coke (13.5 wt.%), and high quality oil products (13.0 wt.% of naphtha, 34.9 wt.% of middle distillate, 27.1 wt.% of vacuum gas oil, and 11.2 wt.% of residue) could be obtained with supercritical m-xylene and acid-treated activated carbon.

Original languageEnglish
Pages (from-to)556-562
Number of pages7
JournalFuel
Volume94
DOIs
Publication statusPublished - 2012 Apr 1

Fingerprint

Hydrocracking
Hydrocarbons
Activated carbon
Vacuum
Naphthas
Oils
Alkanes
Xylene
Gas oils
Coke
Partial pressure
Paraffins
Aromatic Hydrocarbons
Aromatic hydrocarbons
Toluene
Batch reactors
Hexane
Acidity
Hydrogen
Acids

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Viet, Tran Tan ; Lee, Jae Hyuk ; Ryu, Jae Wook ; Ahn, Ik Sung ; Lee, Chang-Ha. / Hydrocracking of vacuum residue with activated carbon in supercritical hydrocarbon solvents. In: Fuel. 2012 ; Vol. 94. pp. 556-562.
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abstract = "Hydrocracking of vacuum residue with activated carbon was conducted in a batch reactor with two types of supercritical hydrocarbon solvents, aromatic hydrocarbons (m-xylene and toluene) and normal alkane hydrocarbons (n-hexane and n-dodecane). The supercritical reactions were performed at 400°C with H 2 partial pressures of 3.45 MPa and 6.89 MPa. The supercritical hydrocarbon solvent affected the levels of conversion and coke formation as well as the distribution of oil products (naphtha, middle distillate, vacuum gas oil, and residue). The mass ratio of each oil product to the unreacted residue differed among the supercritical solvents. Compared to the product profile in n-alkane solvents, aromatic solvents yielded much smaller naphtha fractions and larger middle distillate fractions. An increase of surface acidity of the activated carbon led to the conversion improvement observed in the supercritical reactions. However, the increased partial pressure of hydrogen was not associated with significant changes in conversion. High conversion (69.2 wt.{\%}) with low coke (13.5 wt.{\%}), and high quality oil products (13.0 wt.{\%} of naphtha, 34.9 wt.{\%} of middle distillate, 27.1 wt.{\%} of vacuum gas oil, and 11.2 wt.{\%} of residue) could be obtained with supercritical m-xylene and acid-treated activated carbon.",
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Hydrocracking of vacuum residue with activated carbon in supercritical hydrocarbon solvents. / Viet, Tran Tan; Lee, Jae Hyuk; Ryu, Jae Wook; Ahn, Ik Sung; Lee, Chang-Ha.

In: Fuel, Vol. 94, 01.04.2012, p. 556-562.

Research output: Contribution to journalArticle

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