초록 ▼

A novel slurry hydrotreating process is described which employs a hydrotreating catalyst of small particle size having a quantity of catalyst sites in excess of those required for reaction and/or adsorption of nitrogen compounds in the petroleum or synfuel feed being treated. The excess catalyst sit

A novel slurry hydrotreating process is described which employs a hydrotreating catalyst of small particle size having a quantity of catalyst sites in excess of those required for reaction and/or adsorption of nitrogen compounds in the petroleum or synfuel feed being treated. The excess catalyst sites can therefore in effect be contacted with a low nitrogen or essentially zero nitrogen feed, allowing rapid hydrogenation of aromatics at low temperatures where equilibrium is favored. In a further aspect of the invention, the catalyst which contains adsorbed nitrogen is activated by high temperature denitrogenation.

대표청구항 ▼

A process for hydrotreating a mid-distillate of a hydrocarbonaceous material, comprising: passing the mid-distillate in admixture with a hydrogen containing gas through a hydrotreating zone in contact with a hydrotreating catalyst slurry such that substantial nitrogen removal, hydrodesulfurization a

A process for hydrotreating a mid-distillate of a hydrocarbonaceous material, comprising: passing the mid-distillate in admixture with a hydrogen containing gas through a hydrotreating zone in contact with a hydrotreating catalyst slurry such that substantial nitrogen removal, hydrodesulfurization and aromatics hydrogenation is carried out and wherein the catalyst comprises catalyst particles 1 micron to ⅛inch in average diameter and are characterized by a value of about 5 to 125 on an index defined as the excess catalyst index (ECI) according to the following formula: [Figure] wherein Wf is the weight of the mid-distillate in lbs/hr, Nc is the concentration of the nitrogen in distillate in ppm, Ws is the rate of catalyst addition to the hydrotreating zone in lbs/hr and Mc is the concentration of the metals on the catalyst in weight percent.