Upgrading raw shale-derived crude oils to hydrocarbon distillate fuels

Patent metadata

Field	Value
Publication number	US-9725661-B2
Application number	US-201514793045-A
Country	US
Kind code	B2
Filing date	Jul 7, 2015
Priority date	Feb 1, 2013
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

Integrated processes for upgrading crude shale-derived oils, such as those produced by oil shale retorting or by in situ extraction or combinations thereof. Processes disclosed provide for a split-flow processing scheme to upgrade whole shale oil. The split flow concepts described herein, i.e., naphtha and kerosene hydrotreating in one or more stages and gas oil hydrotreating in one or more stages, requires additional equipment as compared to the alternative approach of whole oil hydrotreating. While contrary to conventional wisdom as requiring more capital equipment to achieve the same final product specifications, the operating efficiency vis a vis on-stream time efficiency and product quality resulting from the split flow concept far exceed in value the somewhat incrementally higher capital expenditure costs.

First claim

What is claimed:

1. An integrated system for upgrading crude shale-derived oils produced by oil shale retorting or by in situ extraction or by mixtures thereof that includes the following:
a. a fractionator for fractionating the whole shale oil into a first fraction comprising naphtha, kerosene and diesel and an atmospheric bottoms fraction comprising gas oil and residuum;
b. a first-stage hydroprocessing reactor containing a hydrogenation catalyst to saturate diolefins contained in the first fraction with hydrogen and having an outlet for recovering an effluent;
c. a second-stage hydroprocessing reactor configured to be operated in an upflow mode and containing catalysts to perform hydrodemetallization and saturation of mono-olefins in the effluent from the first-stage hydroprocessing reactor and having an outlet for recovering a second-stage hydroprocessing reactor effluent, wherein the first-stage hydroprocessing reactor and the second-stage hydroprocessing reactor are fluidly connected such that the effluent from the first-stage hydroprocessing reactor is fed to the second-stage hydroprocessing reactor without phase separation;
d. a third-stage hydroprocessing reactor having one or more beds of catalyst to perform hydrodenitrogenation, hydrodesulfurization, hydrodeoxygenation, and aromatics saturation of the second-stage hydroprocessing reactor effluent and having an outlet for recovering a third-stage hydroprocessing reactor effluent, wherein the second-stage hydroprocessing reactor and the third-stage hydroprocessing reactor are fluidly connected such that the effluent from the second-stage hydroprocessing reactor is fed to the third-stage hydroprocessing reactor without phase separation;
e. a fourth-stage hydroprocessing reactor operated in an upflow mode and containing catalysts to perform hydrodemetallization of the atmospheric bottoms fraction and having an outlet for recovering a fourth-stage reactor effluent;
f. a fifth-stage hydroprocessing reactor having one or more beds of catalyst each containing a catalyst to perform one or more of hydrotreating and hydrocracking of the fourth-stage hydroprocessing reactor effluent and having an outlet for recovering a fifth-stage hydroprocessing reactor effluent, wherein the fourth-stage hydroprocessing reactor and the fifth-stage hydroprocessing reactor are fluidly connected such that the effluent from the fourth-stage hydroprocessing reactor is fed to the fifth-stage hydroprocessing reactor without phase separation;
g. a separation train to recover two or more hydrocarbon fractions from the fifth-stage hydroprocessing reactor effluents of (f) and the third-stage hydroprocessing reactor effluents of (d).

2. The system of claim 1 , wherein the two or more hydrocarbon fractions include at least one of naphtha, kerosene, diesel, and a residuum fraction.

3. The system of claim 1 , wherein
the catalyst in the first stage hydroprocessing reactor comprises an alumina base extruded catalyst with nickel and molybdenum as active metals;
the catalyst in the second stage hydroprocessing reactor comprises an alumina base spheroidal catalyst with nickel and molybdenum as active metals;
the catalyst in the third stage hydroprocessing reactor comprises a layered catalyst comprised of a layer of amorphous base metal Type II extruded catalyst with an organic compound and nickel and molybdenum as active metals and a layer of base metal extruded catalyst containing both amorphous and zeolitic components with nickel and tungsten as active metals;
the catalyst in the fourth stage hydroprocessing reactor comprises an alumina base spheroidal catalyst with nickel and molybdenum as active metals; and
the catalyst in the fifth stage hydroprocessing reactor comprises an amorphous base metal Type II extruded catalyst with an organic compound and nickel and molybdenum as active metals.

4. The system of claim 1 , wherein:
the first stage hydroprocessing reactor is configured to operate at reaction conditions comprising a temperature in the range from about 100° C. to about 250° C., a hydrogen partial pressure in the range from about 400 psi to about 500 psi, and a liquid hourly space velocity in the range from about 2 to about 6 L per hour per L catalyst;
the second stage hydroprocessing reactor is configured to operate at reaction conditions comprising a temperature in the range from about 200° C. to about 440° C., a hydrogen partial pressure in the range from about 400 to about 2600 psi, and a liquid hourly space velocity in the range from about 0.5 to about 5 L per hour per L catalyst;
the third stage hydroprocessing reactor is configured to operate at reaction conditions comprising a temperature in the range from about 280° C. to about 440° C., a hydrogen partial pressure in the range from about 800 to about 2600 psi, and a liquid hourly space velocity in the range from about 0.3 to about 4.0 L per hour per L catalyst;
the fourth stage hydroprocessing reactor is configured to operate at reaction conditions comprising a temperature in the range from about 200° C. to about 440° C., a hydrogen partial pressure in the range from about 400 to about 2600 PSI, and a liquid hourly space velocity in the range from about 0.5 to about 5.0 L per hour per L catalyst;
the fifth stage hydroprocessing reactor is configured to operate at reaction conditions comprising a temperature in the range from about 280° C. to about 440° C., a hydrogen partial pressure in the range from about 800 to about 2600 psi, and a liquid hourly space velocity in the range from about 0.3 to about 4.0 L per hour per L catalyst.

5. The system of claim 1 , further comprising fluid conduits for bypassing at least one of the second-stage hydroprocessing reactor of (c) and the fourth-stage hydroprocessing reactor of (e) to replace catalyst within the reactors while continuing to operate (a), (b), (d), (f), and (g).

6. The system of claim 1 , further comprising an inlet for feeding one or more additional hydrocarbon feedstocks to the fractionator (a), the one or more additional hydrocarbon feedstocks comprising hydrocarbonaceous materials derived from thermal tars, bitumen, coke oven tars, asphaltenics, coal gasification tars, biomass-derived tars, and black liquor tars.

7. The system of claim 1 , further comprising an inlet for feeding one or more additional hydrocarbon feedstocks to the fourth-stage hydroprocessing reactor (e), the one or more additional hydrocarbon feedstocks comprising hydrocarbonaceous materials derived from thermal tars, bitumen, coke oven tars, asphaltenics, coal gasification tars, biomass-derived tars, and black liquor tars.

8. An integrated system for upgrading crude shale-derived oils produced by oil shale retorting or by in situ extraction or combinations thereof that includes the following:
a. a fractionator for fractionating the whole shale oil into a first fraction comprising naphtha, kerosene and diesel and an atmospheric bottoms fraction comprising gas oil and residuum;
b. a first-stage hydroprocessing reactor containing a hydrogenation catalyst for reacting the first fraction and hydrogen to saturate diolefins contained in the first fraction and having an outlet for recovering an effluent from the first-stage hydroprocessing reactor;
c. a second-stage hydroprocessing reactor configured to be operated in an upflow mode and containing catalysts to perform hydrodemetallization and saturation of mono-olefins in the effluent from the first-stage hydroprocessing reactor and having an outlet for recovering an effluent from the second-stage hydroprocessing reactor, wherein the first-stage hydroprocessing reactor and the second-stage hydroprocessing reactor are fluidly connected such that the effluent from the first-stage hydroprocessing reactor

Assignees

• Lummus Technology Inc

Inventors

• Greene Marvin I
• Mukherjee Ujjal K
• Arora Arun

Classifications

• C10G65/12

  including cracking steps and other hydrotreatment steps · CPC title

• C10G65/00

  Treatment of hydrocarbon oils by two or more hydrotreatment processes only · CPC title

• C10G2400/04

  Diesel oil · CPC title

• C10G45/02

  to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing · CPC title

• C10G45/32

  Selective hydrogenation of the diolefin or acetylene compounds · CPC title