Emergy Evaluation of Bio-oil production using sugarcane

biomass residues at Fast Pyrolysis Pilot Plant in Brazil

Alonso-Pippo, W.; Rocha, J.D.; Mesa-Pérez, J.M.; Olivares-Gómez, E.; Cortez, L.A.B.

Institute of Materials and Reagents, University of Havana, La Habana, Cuba

Universidade Estadual de Campinas, UNICAMP, Campinas, Bioware Tecnologia, WWW.BIOWARE.COM.BR Brazi

IV Biennial International Workshop Advances in Energy StudiesEcology-Energy Issues in Latin-America

Unicamp, Campinas, São Paulo, Brazil, June 16-19, 2004.

Fast Pyrolysis Plant Flowsheet

(a) b)

(c)

10C

9C

9T

8C

8T

7C

5P

6C

7T

6T

5T

5C4P

4T

4C3P

3T

2C

2P1C 2T

3C

1T1P

N 2GLP

H

AR

Biomass Fast Pyrolysis Pilot Plant Facility, (a) fluidized bed reactor design, (b) reactor picture, (c) pilot plant

overview

Biomass

Biooil Pilot Plant, Brazil

Reactor

Vapororganic

Biooil

PowderCharcoal

Noncondensable

gas

CombustionChamber

Biooil

PowderCharcoal

Ashes

Ashes

Steel &Equipments

ChemicalsProducts

Labor Sand Charcoal

QuenchingSystem

CeramicMaterial

Feeder

Electricity

Water

Energy flowchart for Bio-oil Production

Resources Bio-oil + Charcoal

Renewable (R) 1.7E+17

No Renewable (N) 6.59E+15

Total Environmental Resources (I=R+N)

1.77E+17

Materials from Economy (M) 7.32E+16

Services (S) 1.43E+15

Retro feed F=(M+S) 7.46E+16

Total Emergy 2.51E+17

Emergetic Parameters for bio-oil & charcoal

Parameters Value Name

Trbio-oil=Y/Qpbio-oil 6.97E+04 sej/J Bio-oil Transformity

Trchar=Y/Qpchar 8.37E+05 sej/J Charcoal Transformity

EYR=Y/F 3.36 Emergy Yield Ratio

EIR=F/I 0.42 Emergy Investment Rate

ELR=(N+F)/R 0.45 Environmental Loading Rate

%R=R/Y 68% Renewability (%)

EER=Y/E$ 1.08 bio-oil ;

1.17 charcoal

Emergy Exchange Ratio

ESI=EYR/ELR 7.46 Sustentability

Calculated Emergy Parameters

CONCLUSIONS

1. Pyrolytic gases recirculation in the fast pyrolysis fluidized bed facility as na additional source of energy to the process and fine charcoal applications are important ways to increase the process sustentability and avoid the production of high quantity of losses.

2. Energy yield in the bio-oil production is acceptable considering that its LHV is about 55 % of the fossil diesel in volume.

3. From the emergetic point of view bio-oil production process is sustainable. Its best application is to replace chemicals from fossil sources.