Conversion of triacylglycerides-containing oils to hydrocarbons

Patent metadata

Field	Value
Publication number	US-2016017239-A1
Application number	US-201514869275-A
Country	US
Kind code	A1
Filing date	Sep 29, 2015
Priority date	Dec 11, 2012
Publication date	Jan 21, 2016
Grant date	—

Abstract

A process for converting triacylglycerides-containing oils into crude oil precursors and/or distillate hydrocarbon fuels is disclosed. The process may include: reacting a triacylglycerides-containing oil-water-hydrogen mixture at a temperature in the range from about 250° C. to about 525° C. and a pressure greater than about 75 bar to convert at least a portion of the triacylglycerides and recovering a reaction effluent comprising water and one or more of isoolefins, isoparaffins, cycloolefins, cycloparaffins, and aromatics; hydrotreating the reaction effluent to form a hydrotreated effluent.

First claim

What is claimed:

1 . A process for converting triacylglycerides-containing oils into crude oil precursors and/or
distillate hydrocarbon fuels, the process comprising: reacting a triacylglycerides-containing oil-water-hydrogen mixture at a temperature in the range from about 250° C. to about 525° C. and a pressure greater than about 75 bar to convert at least a portion of the triacylglycerides and recovering a reaction effluent comprising water and one or more of isoolefins, isoparaffins, cycloolefins, cycloparaffins, and aromatics; hydrotreating the reaction effluent to form a hydrotreated effluent.

2 . The process of claim 1 , further comprising mixing a triacylglycerides-containing oil with water and hydrogen to form the triacylglycerides-containing oil-water-hydrogen mixture.

3 . The process of claim 1 , further comprising mixing a triacylglycerides-containing oil with water to form a triacylglyceride-containing oil-water mixture.

4 . The process of claim 3 , further comprising mixing the triacylglyceride-containing oil-water mixture with hydrogen to form the triacylglyceride-containing oil-water-hydrogen mixture.

5 . The process of claim 1 , wherein the triacylglycerides-containing oil-water-hydrogen mixture has a water to triacylglycerides mass ratio in the range from about 0.001:1 to about 1:1.

6 . The process of claim 1 , wherein the triacylglycerides-containing oil-water-hydrogen mixture has a hydrogen to triacylglycerides mass ratio in the range from about 0.001:1 to about 0.5:1.

7 . The process of claim 1 , further comprising separating at least one of hydrogen and water from the hydrotreated effluent.

8 . The process of claim 7 , further comprising recycling at least one of the separated hydrogen and the separated water to the reacting step.

9 . The process of claim 1 , further comprising co-processing a non-renewable hydrocarbon feedstock with the reaction effluent in the hydrotreating step.

10 . The process of claim 1 , wherein the triacylglycerides-containing oil comprises a renewable oil from at least one of camelina, carinata, cotton, jatropha, karanja, moringa, palm, castor, corn, linseed, peanut, soybean, sunflower, tung, babassu, or at least one triacylglycerides-containing coil from at least one of canola, shea butter, tall oil, tallow, waste vegetable oil, algal oil, and pongamia.

11 . The process of claim 1 , further comprising fractionating the hydrotreated effluent to recover one or more hydrocarbon fractions boiling in the range of naphtha, diesel, or jet.

12 . The process of claim 1 , wherein the reacting is performed in the absence of an added catalyst.

13 . The process of claim 1 , wherein the reacting is performed in a hydrothermolysis reactor and the process further comprises injecting water into the hydrothermolysis reactor to maintain a temperature or a temperature profile within the hydrothermolysis reactor.

14 . The process of claim 11 , wherein the jet fraction has a total acid number of less than 0.015 expressed as mg KOH per gram.

15 . The process of claim 11 , wherein the jet fraction has an olefins content of less than about 5 vol % and an aromatics content of less than about 25 vol %.

16 . The process of claim 11 , wherein
the jet fraction may be used directly as a jet fuel without blending; or the diesel fraction may be used directly as a diesel fuel without blending.

17 . A process for converting triacylglycerides-containing oils into crude oil precursors and/or distillate hydrocarbon fuels, the process comprising:
mixing a triacylglyceride-containing oil with water to form a triacylglycerides-water mixture; mixing hydrogen with the triacylglycerides-water mixture to form a mixed feed; reacting the mixed feed in a hydrothermolysis reaction zone under reaction conditions sufficient to convert at least a portion of the triacylglycerides via hydrothermolysis to produce hydrocarbon compounds comprising one or more of isoolefins, isoparaffins, cycloolefins, cycloparaffins, and aromatics; and recovering an effluent from the hydrothermolysis reaction zone; feeding effluent from the hydrothermolysis reaction zone, without any intermediate separations, to a catalytic hydrotreatment zone to hydrotreat the hydrothermolysis effluent; and recovering a hydrotreated effluent.

18 . The process of claim 17 , wherein the hydrothermolysis reaction conditions comprise a temperature in the range from about 250° C. to about 525° C.

19 . The process of claim 17 , wherein the reaction conditions comprise a pressure and a temperature greater than the critical pressure and temperature of water.

20 . The process of claim 17 , wherein the triacylglycerides-water mixture has a water to triacylglycerides mass ratio in the range from about 0.001:1 to about 1:1.

21 . The process of claim 17 , wherein the mixed feed has a hydrogen to triacylglycerides mass ratio in the range from about 0.001:1 to about 0.5:1.

22 . The process of claim 17 , further comprising separating water and hydrogen from the hydrotreated effluent.

23 . The process of claim 22 , further comprising recycling at least one of the separated hydrogen and the separated water to the reacting step.

24 . The process of claim 17 , wherein the triacylglycerides-containing oil comprises a renewable oil from at least one of camelina, carinata, jatropha, karanja, moringa, palm, castor, corn, linseed, peanut, soybean, sunflower, tung, babassu, tallow, waste vegetable oil, algal oil, and canola.

25 . The process of claim 17 , further comprising fractionating the hydrotreated effluent to recover one or more hydrocarbon fractions boiling in the range of naphtha, diesel, or jet.

26 . The process of claim 17 , wherein the hydrothermolysis is performed in the absence of an added inorganic heterogeneous catalyst.

27 . The process of claim 17 , wherein the hydrothermolysis effluent further comprises organic acids, and wherein the catalytic hydrotreatment zone further hydrodeoxygenates and/or decarboxylates the hydrothermolysis effluent.

28 . A process for converting triacylglycerides-containing oils into crude oil precursors and/or distillate hydrocarbon fuels, the process comprising:
mixing a triacylglyceride-containing oil with water to form a triacylglycerides-water mixture; mixing hydrogen with the triacylglycerides-water mixture to form a mixed feed; reacting the mixed feed in a hydrothermolysis reaction zone under reaction conditions sufficient to convert at least a portion of the triacylglycerides via hydrothermolysis to produce hydrocarbon compounds comprising one or more of isoolefins, isoparaffins, cycloolefins, cycloparaffins, and aromatics; injecting water into the hydrothermolysis reactor to maintain a temperature or a temperature profile within the hydrothermolysis reactor; and recovering an effluent from the hydrothermolysis reaction zone; feeding effluent from the hydrothermolysis reaction zone, without any intermediate separations, to a catalytic hydrotreatment zone to hydrotreat the hydrothermolysis effluent; and recovering a hydrotreated effluent.

29 . The process of claim 28 , further comprising separating at least one of hydrogen and water from the hydrotreated effluent.

30 . The process of claim 28 , further comprising fractionating the hydrotreated effluent to r

Assignees

• Chevron Lummus Global Llc
• Applied Res Associates Inc

Inventors

• Mukherjee Ujjal K
• Arora Arun
• Greene Marvin I
• Coppola Edward
• Red Jr Charles
• Baxley J Steven
• Nana Sanjay
• Rine Jeffrey

Classifications

• C10G3/42

  Catalytic treatment · CPC title

• C10G2300/1011

  Biomass · CPC title

• C10G2300/202

  Heteroatoms content, i.e. S, N, O, P · CPC title

• C10G45/10

  containing platinum group metals or compounds thereof · CPC title

• C10G3/40

  Thermal non-catalytic treatment · CPC title