SG11201408410SA - Two step optimization for liquefaction of biomass - Google Patents

Abstract

(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 7 November 2013 (07.11.2013) WIPOIPCT (10) International Publication Number WO 2013/165308 A1 (51) International Patent Classification: C13K1/02 (2006.01) B01J 3/00 (2006.01) C07H1/00 (2006.01) C12P 7/10 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/SE2013/050478 30 April 2013 (30.04.2013) English (30) Priority Data: 1250429-6 61/640,070 30 April 2012 (30.04.2012) 30 April 2012 (30.04.2012) (71) Applicant: REAC FUEL AB [SE/SE]; John Ericssons vag 1, S-223 63 Lund (SE). AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. SE US (72) Inventors: JOHANNESSON, Haukur; Viborgsslingan 24, S-224 72 Lund (SE). GRAM, Andreas; Klevahill Ene- borg 105, S-243 33 Hoor (SE). CARLIUS, Anders; Skyt- telinjen 134, S-226 49 Lund (SE). KARLSSON, Goran; Nyborgsvagen 15A, S-252 21 Helsingborg (SE). (74) Agent: AWAPATENT AB; Box 5117, S-200 71 Malmo (SE). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, English (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) 00 o m i-H cn i-H o CJ o & (54) Title: TWO STEP OPTIMIZATION FOR LIQUEFACTION OF BIOMASS (57) Abstract: The present invention describes process involving liquefaction of a a biomass slurry by treatment in hot compressed water (HCW), said process comprising: -a first decomposition step being performed at an average pH level of at most 4.5, wherein a hemicellulose fraction in the biomass slurry is decomposed to water soluble mono-and/or oligomers, and wherein a cellulose fraction undergoes a pre-treatment for decrystallization of the cellulose polymer; -a separation step; and -a second decomposition step, wherein the cellulose fraction in the biomass slurry is decomposed to water soluble mono-and/or oligomers; wherein both of the first and second decomposition steps are performed sub-critical temperatures at implying relatively moderate conditions.