Abstract

This article is dedicated to describe the fast pyrolysis plant of biomass PPR-200 settled at UNICAMPSchool of Agricultural Engineering (FEAGRI). This fast pyrolysis plant, the first in Brazil to produce oilwith fluidized bed reactor , began operating in 1998 with studies in a reactor for gasification, adaptedto obtain bio-oil.Currently, PPR-200 operates with a 200 kg h-1 biomass capacity, and is used toconduct exploratory testing with various vegetable raw materials, such as sugar cane trash andbagasse, elephant grass, sawdust from wood, rice straw, coffee straw, orange bagasse, etc.. Around15% of biomass is burnt to provide heat to the process. The remainder turns into the followingproducts: bio-oil (20-40%), fine charcoal (20-30%), extract acid (10-15%) and pyrolysis gas (15-35%).The pyrolysis gas is composed mainly by CH4, the H2, CO and CO2.

Highlights

  • Brazil is a predominantly agricultural country, which produces approximately 300 million tones of agricultural and agro-industrial residues every year

  • Biomass fast pyrolysis to produce an optimum fraction of aqueous organic liquid is a thermochemical conversion process, i.e., i it occurs at high temperatures and involves chemical reactions

  • The pilot plant of biomass fast pyrolysis with a fluidized reactor developed by Unicamp researchers, which is the first pilot plant for bio-oil production in Brazil, was originally installed at the premises of the former Copersucar Technology Center, currently the Cane Technology Center (CTC), in Piracicaba - São Paulo

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Summary

INTRODUCTION

Brazil is a predominantly agricultural country, which produces approximately 300 million tones of agricultural and agro-industrial residues every year. In Brazil, among the technologies proposed for using agricultural waste to produce energy, fast pyrolysis for bio-oil production is in a more advanced stage to be implemented in the short and medium terms. The pilot plant of biomass fast pyrolysis with a fluidized reactor developed by Unicamp researchers, which is the first pilot plant for bio-oil production in Brazil, was originally installed at the premises of the former Copersucar Technology Center, currently the Cane Technology Center (CTC), in Piracicaba - São Paulo. In 2007, in a more advanced stage, PPR-200 was transferred to the Faculty of Agricultural Engineering of Unicamp as part of the research project in partnership with Bioware. The biomass comes in contact with the reactor bed at a temperature of approximately 500oC and is volatized, becoming solid (fine charcoal), steam (bio-oil and acid extract) and gas. The heat exchanger and hot air blower have not been installed yet; the tests are being conducted using air from the existing blower (14)

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