Effect of Operating Parameters on Thermochemical Liquefaction of Sewage Sludge

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tadashi Nakamura¹  Shin-ya Yokoyama²  Akira Suzuki¹ 

[1] Central Research Laboratories, Japan Organo Co., Ltd.;National Research Institute for Pollution and Resources

关键词: Environment;    Liquefaction;    Thermochemical Conversion;    Sewage Sludge;    Heavy Oil;   

DOI  :  10.1252/jcej.23.6

来源: Maruzen Company Ltd

【 摘 要 】

References(7)Cited-By(12)To determine the optimum combination of operating parameters for direct thermochemical liquefaction of sewage sludge, dewatered materials (raw mixed sludges) were treated over a temperature range of 150–300°C, a holding time of 0–180 min and a catalyst (sodium carbonate) loading of 0–5 wt% using a batch reactor. By variance analysis, the lower limit of reaction temperature for the production of heavy oils was found to be 250°C. At that temperature, however, organic concentrations in the aqueous phase were still high. From the viewpoint of oil production and wastewater treatment, the optimum combination of operating parameters was a reaction temperature of 275–300°C, a holding time of 60 min and operation without catalyst.

【 授权许可】

Unknown