| 摘要 |
<p>A fermenter and a method of fermentation in a U-shape and/or nozzle U-loop fermenter (100) comprising a U-part having an essentially vertical down-flow part (101), an essentially vertical up-flow part (102) and a substantially horizontal connecting part (103), which connects the lower ends of the down-flow part (101) and the up-flow part (102), a top part (104) which is provided above the U-part and has a diameter which is substantially larger than the diameter of U-part, means for creating liquid circulation in U-part of the fermenter, and one or more gas injection points (110) for the introduction and dispersion of the gas(ses) into the fermentation liquid. The pressure may be controlled differently in certain zones of the fermenter by pressure controlling devices (105,106,108) e.g. by increasing the pressure in certain zones of the fermenter in relation to the pressure in other zones of the fermenter, or decreasing the pressure in a zone of the fermenter in relation to the pressure in another zone of the fermenter.</p> |
