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Biomass based feeds are processed under hydrothermal treatment conditions, e.g., to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment is performed in the presence of a dissolved catalyst or catalyst precursor. The presence of the dissolved catalyst or catalyst precursor can modify the nature of the hydrocarbon products produced from the hydrothermal treatment.

Titel:	CATALYTIC HYDROTHERMAL TREATMENT OF BIOMASS
Autor/in / Beteiligte Person:	ROBERTS, Virginia M. ; DAAGE, Michel ; BIELENBERG, James R. ; BERLOWITZ, Paul J. ; OLDENBURG, Paul D. ; LONG, David C. ; OUMAR-MAHAMAT, Halou
Link:	Zum Volltext
Veröffentlichung:	2012
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20120101319 Publication Date: April 26, 2012 Appl. No: 13/285787 Application Filed: October 31, 2011 Assignees: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (Annandale, NJ, US) Claim: 1. A method for hydrothermally processing biomass, comprising: contacting a biomass feed with water in the presence of a dissolved metal catalyst and a reducing gas under effective hydrothermal processing conditions to produce a multi-phase product; and separating the multi-phase product to produce at least a gas phase portion, a liquid hydrocarbon product, an aqueous portion, and a solids portion. Claim: 2. The method of claim 1, wherein the dissolved metal catalyst is a metal salt. Claim: 3. The method of claim 1, wherein the dissolved metal catalyst is a metal salt containing Co, Mo, Cr, Mn, or a combination thereof. Claim: 4. The method of claim 1, wherein the dissolved metal catalyst is a biocompatible material. Claim: 5. The method of claim 4, wherein the metal comprises Fe, Mn, Zn, Mo, Cu, or a combination thereof. Claim: 6. The method of claim 1, wherein the metal is Co, Mo, or a combination thereof. Claim: 7. The method of claim 1, wherein the effective hydrothermal processing conditions include a temperature from about 150° C. to about 500° C. and a pressure from about 4.5 barg (about 450 kPag) to about 300 barg (about 30 MPag). Claim: 8. The method of claim 1, wherein the effective hydrothermal processing conditions include a partial pressure of reducing gas of at least about 2 bar (about 0.2 MPa), wherein the reducing gas is hydrogen. Claim: 9. The method of claim 1, wherein contacting the algae based feed with water under effective hydrothermal processing conditions substantially does not result in a phase change for the water. Claim: 10. The method of claim 1, wherein the metal catalyst is dissolved in the water. Claim: 11. The method of claim 1, wherein the weight ratio of water to algae is from about 3:1 to about 5:1. Claim: 12. The method of claim 1, wherein the catalyst particles are present in an amount from about 0.1 wt % to about 5 wt %, based on a weight of the algae. Claim: 13. The method of claim 1, further comprising separating the hydrocarbon liquid product to produce a fraction having at least 90 wt % of its boiling range between about 193° C. and about 360° C. Claim: 14. A method for hydrothermally processing biomass, comprising: introducing a biomass feed, a solution containing a metal catalyst precursor, and a sulfiding agent into a reaction zone; contacting the biomass feed, metal catalyst precursor, and sulfiding agent with water in the presence of a reducing gas under effective hydrothermal processing conditions to convert the metal catalyst precursor into a sulfided metal catalyst and to produce a multi-phase product; and separating the multi-phase product to produce at least a gas phase portion, a liquid hydrocarbon product, an aqueous portion, and a solids portion. Claim: 15. The method of claim 14, wherein the sulfiding agent is hydrogen sulfide. Claim: 16. The method of claim 14, wherein the metal catalyst precursor is a metal salt containing Co, Mo, or a combination thereof. Claim: 17. The method of claim 14, wherein the sulfided metal catalyst forms part of the solids portion, the sulfided metal catalyst being separated from the solids portion by filtration. Claim: 18. A method for hydrothermally processing biomass, comprising: introducing a biomass feed and an aqueous recycle stream into a reaction zone, the aqueous recycle stream containing at least one metal catalyst; contacting the biomass feed with the aqueous recycle stream, including the at least one metal catalyst, in the reaction zone under effective hydrothermal processing conditions to produce a multi-phase product; and separating a liquid hydrocarbon product from the multi-phase product. Claim: 19. The method of claim 18, further comprising introducing an additional portion of the metal catalyst into the reaction zone. Claim: 20. The method of claim 18, wherein the biomass feed and aqueous recycle stream are combined prior to being introduced into the reaction zone. Current U.S. Class: 585/240 Current International Class: 07

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CATALYTIC HYDROTHERMAL TREATMENT OF BIOMASS