Design of a cogeneration plant for sugar industries using renewable energy resources

Abstract

Cogeneration is a broader term associated with sugar industries. Cogeneration systems serve two purposes-generate electricity from steam using waste materials obtained during industrial process and also process heat for industry itself. In order to have a significant increase in generation capacity of electricity in sugar factories, advanced cogeneration systems are used. These systems comprise of high pressure direct combustion steam rankine cycle (SRC) systems and biomass integrated gasification combined cycle (BIG-CC) systems. This paper focuses on the use of BIG-CC system along with bagasse and other sugarcane residues like press mud in sugar industry in India. It is found that with the increase in temperature and pressure of cogenerator, the overall power output and hence the efficiency of the cogenerator unit increases gradually. However, over 60 bar pressure, in many high pressure systems there is a requirement of special construction techniques along with the materials that can withstand the high pressure as well as high temperatures (over 450°C).

Subject Classification:

• 74G65

Keywords:

• Cogeneration
• Sugar production
• BIG-CC
• SRC
• Renewable Energy Resources
• High temperature & pressure