O-02 Daily Start and Stop Gasification Experiment of Shochu Residue by Supercritical Water Gasification

Abstract

The supercritical water gasification (SCWG) of wet-biomass holds promise as a technology to convert biological effluent into valuable, environmentally, and friendly energy. Shochu residue is organic effluent as waste produced at distillation process in Shochu distillers. One of major obstacles was tar plugging in heat exchanger tube. 24 h continuous SCWG operation of Shochu residue with pilot plant (1 t-wet/d) has been conducted and it was successful achieved with some kind of countermeasures. However, Shochu distillers’ daily work style suggested that Daily Start and Stop operation of SCWG plant for Shochu residue treatment will be profitable at Shochu factory. Therefore, 60 h DSS gasification experiment of Shochu residue has been conducted to consider tar suppress effects of rapidly temperature rising and radical scavenger. This was successful achieved, because of no plugging and stable pressure loss at heat exchanger tube during gasification.