Солнечная электростанция 30кВт - бизнес под ключ за 27000$

15.08.2018 Солнце в сеть




Производство оборудования и технологии
Рубрики

High solid handling

In the aqueous-phase biomass hydrolysis route, biomass sacchar­ification and fermentation steps are usually carried out in dilute solutions. Handling of large solvent volumes demands energy and any advancement in high solid loading is an energy saving. Development of new technologies for high solid handling is also a high priority, challenging area.

4. Distillation of ethanol

Distillation is another challenging area in large-scale operations. The current three column distillation technique requires a substan­tial amount of energy for distilling a dilute ethanol solution, or "beer," which contains only 10-12% ethanol to produce a ~90% eth­anol azeotrope. The energy for the distillation process comes from burning lignin and dried fermentation wastes. Alternatively, lignin can be used for conversion to value-added products or burned to generate electricity, adding profits to integrated cellulosic ethanol plants. Further improvements in column/tray designs or combin­ing distillations with other techniques like pervaporation may cut the energy cost associated with distillation. Substantial progress has been made in membrane-based pervaporation technologies for sep­aration of ethanol out of the beer. However, more R&D is required in scaling up distillation-pervaporation integrated configurations.

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