Web1.2. INTRODUCTION OF THE UNIT To meet the regulatory norms, Diesel Hydro Desulfurization (DHDS) unit at Gujarat Refinery was installed and commissioned in the year 1999 with a aim to produce low sulfur diesel of 500 PPMW from a blend consisting of SR LGO, SR HGO, SR GO and LCO having S level of 1.46% w/w. WebRefinery process details The Haldia refinery comprises four blocks namely, the fuel oil block, the diesel hydro desulphurisation (DHDS) block, the once-through hydrocracker (OHCU) block, and the lube oil block.

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Hydrodesulfurization (HDS), also called hydrotreatment or hydrotreating, is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. The purpose of removing the sulfur, and … See more Although some reactions involving catalytic hydrogenation of organic substances were already known, the property of finely divided nickel to catalyze the fixation of hydrogen on hydrocarbon (ethylene See more Hydrogenation is a class of chemical reactions in which the net result is the addition of hydrogen (H). Hydrogenolysis is a type of … See more The refinery HDS feedstocks (naphtha, kerosene, diesel oil, and heavier oils) contain a wide range of organic sulfur compounds, including thiols, thiophenes, organic See more The basic hydrogenolysis reaction has a number of uses other than hydrodesulfurization. Hydrodenitrogenation See more In an industrial hydrodesulfurization unit, such as in a refinery, the hydrodesulfurization reaction takes place in a fixed-bed reactor at elevated temperatures ranging from 300 to 400 °C and elevated pressures ranging from 30 to 130 See more The main HDS catalysts are based on molybdenum disulfide (MoS 2) together with smaller amounts of other metals. The nature of the sites … See more • Claus process • Hydrogen pinch • Timeline of hydrogen technologies See more WebIn July 1999, the Panipat refinery commissioned its diesel hydro desulphurisation unit (DHDS) for the production of extra low sulphur diesel with a sulphur content of less than 0.25% weight. The refinery was the second unit in the country to be commissioned, the first being the unit at the Gujarat refinery, which was commissioned on 12 June 1999. tasty as fit menu

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WebIn petroleum refineries, the HDS process is used to remove sulphur from the hydrocarbons to fulfil environmental regulations. To do this, hydrogen is put in contact … Web• The main chemical reactions in DHDS/DHDT are hydrodesulphurization(HDS), hydrodenitrification (HDN), and aromatic … http://dhds.cdc.gov/ the business side of photography