Tower reactors for bioconversion of lignocellulosic material
An apparatus is disclosed for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material. The apparatus consists of a tower bioreactor which has mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.
- Research Organization:
- Midwest Research Institute, Kansas City, MO (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC36-83CH10093
- Assignee:
- PTO; SCA: 090900; PA: EDB-98:041985; SN: 98001932709
- Patent Number(s):
- US 5,733,758/A/
- Application Number:
- PAN: 8-780,943
- OSTI ID:
- 597113
- Resource Relation:
- Other Information: PBD: 31 Mar 1998
- Country of Publication:
- United States
- Language:
- English
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Tower reactors for bioconversion of lignocellulosic material
Tower reactors for bioconversion of lignocellulosic material