Global Patent Index - EP 1161552 A1

EP 1161552 A1 2001-12-12 - METHOD OF OBTAINING METHYL ALCOHOL FROM RAW GAS AND INSTALLATION FOR CARRYING OUT SAID METHOD

Title (en)

METHOD OF OBTAINING METHYL ALCOHOL FROM RAW GAS AND INSTALLATION FOR CARRYING OUT SAID METHOD

Title (de)

VERFAHREN ZUR GEWINNUNG VON METHYLALKOHOL AUS ROHGAS UND ANLAGE ZUR DURCHFÜHRUNG DES VERFAHRENS

Title (fr)

PROCEDE POUR L'OBTENTION D'ALCOOL METHYLIQUE A PARTIR DE GAZ BRUT ET INSTALLATION POUR L'EXECUTION DU PROCEDE

Publication

EP 1161552 A1 (DE)

Application

EP 00907889 A

Priority

  • CH 50799 A
  • IB 0000290 W

Abstract (en)

[origin: WO0055347A1] In a first purification stage (1) hydrogen sulfide contained in the raw gas is separated by microbial oxidation into water and sulfur. In a second (17) and third (32) purification stage the methane contained in the desulphurized raw gas is oxidized by further microbial oxidation to yield methyl alcohol. The first purification stage (1) comprises a first fixed trickling filter device (2), the second purification stage (17) comprises a second fixed trickling filter device (18) and the third purification stage (32) comprises a third fixed trickling filter device (33). The first fixed trickling filter device (2) contains microorganisms which carry out the oxidation of H2S into sulfur. The second (18) and third (33) fixed trickling filter devices contain a mixed population of bacteria and yeasts which primarily carry out the oxidation of the methane. The wash water emerging from the wash water bottom (36) of the third purification stage (32) is filtered in a filter press (44). The filtrate flows through a microfilter device (49) and enters the distillation column (50). The distillation vapour precipitates in a condenser (51) and the distillate is collected in a product tank (52). This distillate has a methanol content of between 30 and 40 %.

IPC 1-7 (main, further and additional classification)

C12P 7/04; C12M 1/40; C12P 3/00

IPC 8 full level (invention and additional information)

C12M 1/40 (2006.01); C12P 3/00 (2006.01); C12P 7/04 (2006.01)

CPC (invention and additional information)

C12M 21/04 (2013.01); C12M 47/18 (2013.01); C12P 3/00 (2013.01); C12P 7/04 (2013.01); Y02E 50/343 (2013.01)

Citation (search report)

See references of WO 0055347A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0055347 A1 20000921; AU 2935100 A 20001004; CA 2365461 A1 20000921; EP 1161552 A1 20011212

INPADOC legal status


2004-04-14 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030930

2001-12-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010903

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI