US 6,274,530 B1 · Fluid hydrocracking catalyst precursor and method

Abstract

A method for converting a hydrocarbonaceous feedstock to a lower boiling temperature product is described which comprises suspending metal sulfide particles and oxide particles in a reaction zone including hydrogen and the hydrocarbonaceous feedstock at hydrocracking conditions. The metal sulfide particles and the oxide particles are introduced into the reaction zone through particle precursor fluids which precipitate upon heating to form the particles. The metal sulfide particles contain sulfidable transition metals. The oxide particles contain oxidizable elements such as magnesium, aluminum, silicon, phosphorous, calcium, scandium, titanium, gallium, germanium, zirconium, cerium, and mixtures thereof and are not hydrogenation catalysts under the reactor conditions. The oxide particles resist being chemically reduced by reducing agents in the reaction zone. Surprisingly, the presence of the oxide particles is associated with a significant reduction of coke production in the reaction zone. A hydrogenation catalyst precursor comprising a hydrocarbonaceous feedstock, a sulfide particle precursor fluid, and an oxide particle precursor fluid is also described.

Claims20

Dependent claims

A hydrogenation catalyst precursor, which comprises:

a hydrocarbonaceous feedstock including at least about five volume percent of a boiling range fraction having a weight average boiling point at atmospheric pressure which is equal to or greater than 1000° F.;
a sulfide particle precursor fluid which includes a transition metal compound containing a sulfidable metal selected from the group consisting of molybdenum, cobalt, nickel, iron, vanadium, tungsten and mixtures thereof, wherein the sulfide particle precursor fluid is susceptible upon heating to precipitation which produces metal sulfide particles composed essentially of a metal sulfide of the sulfidable metal having an effective suspended particle size of about 0.001 to 50 microns;
and
an oxide particle precursor fluid which includes a compound containing an oxidisable element selected from the group consisting of magnesium, aluminum, silicon, phosphorous, calcium, scandium, titanium, gallium, germanium, zirconium, cerium, and mixtures thereof, wherein the oxide particle precursor fluid is susceptible upon heating to precipitation which produces oxide particles composed essentially of an oxide of the oxidisable element having an effective suspended particle size of about 0.001 to 50 microns.

1 more element

A dispersed hydrogenation catalyst precursor, which comprises:

a hydrocarbonaceous feedstock including at least about five volume percent of a boiling range fraction having a weight average boiling point at atmospheric pressure which is equal to or greater than 1000° F.;
a sulfide particle precursor fluid which is present as a solute in the feedstock and includes a hydrocarbon soluble metal compound containing a sulfidable metal selected from the group consisting of molybdenum, cobalt, nickel, iron, vanadium, tungsten and mixtures thereof, and which sulfide particle precursor fluid is susceptible upon heating to precipitation which produces metal sulfide particles composed essentially of a metal sulfide of the sulfidable metal having an effective suspended particle size of about 0.001 to 50 microns;
and
an oxide particle precursor fluid which is present as a solute in the hydrocarbonaceous feedstock and includes a hydrocarbon soluble metal compound containing an oxidisable element selected from the group consisting of magnesium, aluminum, silicon, phosphorous, calcium, scandium, titanium, gallium, germanium, zirconium, cerium, and mixtures thereof, and which oxide particle precursor fluid is susceptible upon heating to precipitation which produces oxide particles composed essentially of an oxide of the oxidisable element having an effective suspended particle size of about 0.001 to 50 microns.

1 more element

Dependencies are inferred from the claim text.

Fluid hydrocracking catalyst precursor and method

Life of this patent

Fluid hydrocracking catalyst precursor and method

Life of this patent

Abstract

Claims20