Straight run gas oil as sulphur compound to preserve the sulphide state of the hydroprocessing catalyst of triglycerides

Csaba Tóth, Dániel Sági, J. Hancsók

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The hydrogenation of natural triglycerides to produce motor fuels has an increasing importance. Therefore increase the efficiency of the production is important. So a special case of hydrogenation of triglycerides was studied on a sulphided NiMo/Al2O3 catalyst at wide range of process parameters (Pressure=40 and 80bar, Temperature=320-380°C, Liquid Hourly Space Velocity=0.75-2.0 h-1, H2/feed ratio=600m3/m3). The sulphur content of the feedstock was ensured with mixing a small amount (10%) of high sulphur containing (0.9%) gas oil into the sunflower oil to ensure the sulphided state of the catalyst. In comparison, the hydrogenation of a reference feedstock was examined which sulphur content was set to similar concentration (905mg/kg) level by using an easily decomposable sulphur compound (dimethyl disulphide). By applying favourable process parameters (Temperature=360-380°C, Pressure=80bar, Liquid Hourly Space Velocity=0.75 to 1.0 h-1, H2/feed ratio=600m3/m3) the properties of the products being obtained in high yield satisfied the requirements of the EN 590:2013 standard, except Cold Filter Plugging Point and density values for both feedstocks. In case of the catalytic hydrogenation of triglycerides it was concluded to cover the sulphur content of the feedstock with straight run (high sulphur containing) gas oil is a suitable and cost-effective solution to preserve the sulphide state of the catalyst. Diesel fuel can be produced with blending of products of high cetane and low density into other gas oil streams. The hydrogenated vegetable oil products can improve the quality of low-quality gas oil streams to produce better quality diesel fuel with bio-component content.

Original languageEnglish
JournalJournal of Cleaner Production
DOIs
Publication statusAccepted/In press - Dec 21 2014

Fingerprint

Sulfur compounds
sulfur compound
Gas oils
Sulfur
catalyst
Feedstocks
sulfur
sulfide
Hydrogenation
Catalysts
oil
gas
Diesel fuels
Sunflower oil
liquid
vegetable oil
Vegetable oils
Liquids
temperature
Triglycerides

Keywords

  • Biofuel
  • Diesel fuel
  • Hydrogenation
  • Paraffinic diesel
  • Triglyceride

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Strategy and Management

Cite this

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title = "Straight run gas oil as sulphur compound to preserve the sulphide state of the hydroprocessing catalyst of triglycerides",
abstract = "The hydrogenation of natural triglycerides to produce motor fuels has an increasing importance. Therefore increase the efficiency of the production is important. So a special case of hydrogenation of triglycerides was studied on a sulphided NiMo/Al2O3 catalyst at wide range of process parameters (Pressure=40 and 80bar, Temperature=320-380°C, Liquid Hourly Space Velocity=0.75-2.0 h-1, H2/feed ratio=600m3/m3). The sulphur content of the feedstock was ensured with mixing a small amount (10{\%}) of high sulphur containing (0.9{\%}) gas oil into the sunflower oil to ensure the sulphided state of the catalyst. In comparison, the hydrogenation of a reference feedstock was examined which sulphur content was set to similar concentration (905mg/kg) level by using an easily decomposable sulphur compound (dimethyl disulphide). By applying favourable process parameters (Temperature=360-380°C, Pressure=80bar, Liquid Hourly Space Velocity=0.75 to 1.0 h-1, H2/feed ratio=600m3/m3) the properties of the products being obtained in high yield satisfied the requirements of the EN 590:2013 standard, except Cold Filter Plugging Point and density values for both feedstocks. In case of the catalytic hydrogenation of triglycerides it was concluded to cover the sulphur content of the feedstock with straight run (high sulphur containing) gas oil is a suitable and cost-effective solution to preserve the sulphide state of the catalyst. Diesel fuel can be produced with blending of products of high cetane and low density into other gas oil streams. The hydrogenated vegetable oil products can improve the quality of low-quality gas oil streams to produce better quality diesel fuel with bio-component content.",
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AU - Tóth, Csaba

AU - Sági, Dániel

AU - Hancsók, J.

PY - 2014/12/21

Y1 - 2014/12/21

N2 - The hydrogenation of natural triglycerides to produce motor fuels has an increasing importance. Therefore increase the efficiency of the production is important. So a special case of hydrogenation of triglycerides was studied on a sulphided NiMo/Al2O3 catalyst at wide range of process parameters (Pressure=40 and 80bar, Temperature=320-380°C, Liquid Hourly Space Velocity=0.75-2.0 h-1, H2/feed ratio=600m3/m3). The sulphur content of the feedstock was ensured with mixing a small amount (10%) of high sulphur containing (0.9%) gas oil into the sunflower oil to ensure the sulphided state of the catalyst. In comparison, the hydrogenation of a reference feedstock was examined which sulphur content was set to similar concentration (905mg/kg) level by using an easily decomposable sulphur compound (dimethyl disulphide). By applying favourable process parameters (Temperature=360-380°C, Pressure=80bar, Liquid Hourly Space Velocity=0.75 to 1.0 h-1, H2/feed ratio=600m3/m3) the properties of the products being obtained in high yield satisfied the requirements of the EN 590:2013 standard, except Cold Filter Plugging Point and density values for both feedstocks. In case of the catalytic hydrogenation of triglycerides it was concluded to cover the sulphur content of the feedstock with straight run (high sulphur containing) gas oil is a suitable and cost-effective solution to preserve the sulphide state of the catalyst. Diesel fuel can be produced with blending of products of high cetane and low density into other gas oil streams. The hydrogenated vegetable oil products can improve the quality of low-quality gas oil streams to produce better quality diesel fuel with bio-component content.

AB - The hydrogenation of natural triglycerides to produce motor fuels has an increasing importance. Therefore increase the efficiency of the production is important. So a special case of hydrogenation of triglycerides was studied on a sulphided NiMo/Al2O3 catalyst at wide range of process parameters (Pressure=40 and 80bar, Temperature=320-380°C, Liquid Hourly Space Velocity=0.75-2.0 h-1, H2/feed ratio=600m3/m3). The sulphur content of the feedstock was ensured with mixing a small amount (10%) of high sulphur containing (0.9%) gas oil into the sunflower oil to ensure the sulphided state of the catalyst. In comparison, the hydrogenation of a reference feedstock was examined which sulphur content was set to similar concentration (905mg/kg) level by using an easily decomposable sulphur compound (dimethyl disulphide). By applying favourable process parameters (Temperature=360-380°C, Pressure=80bar, Liquid Hourly Space Velocity=0.75 to 1.0 h-1, H2/feed ratio=600m3/m3) the properties of the products being obtained in high yield satisfied the requirements of the EN 590:2013 standard, except Cold Filter Plugging Point and density values for both feedstocks. In case of the catalytic hydrogenation of triglycerides it was concluded to cover the sulphur content of the feedstock with straight run (high sulphur containing) gas oil is a suitable and cost-effective solution to preserve the sulphide state of the catalyst. Diesel fuel can be produced with blending of products of high cetane and low density into other gas oil streams. The hydrogenated vegetable oil products can improve the quality of low-quality gas oil streams to produce better quality diesel fuel with bio-component content.

KW - Biofuel

KW - Diesel fuel

KW - Hydrogenation

KW - Paraffinic diesel

KW - Triglyceride

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