Torrefaction Research in East Coast

Transcription

1 Torrefaction Research in East Coast P. Basu, B. Acharya, D. Dhungana, A. Boskovic, M. Raut, D. Armsworthy & Dalhousie university 1/13

2 Biochar for metal extraction 2

3 ~ a research and development company based in Halifax. Continuous operation since 1992 in a niche market of energy conversion

4 Our current projects ~ more exposed internationally Canada China India Korea Malaysia Singapore Sweden Singapore UK

5 Torrefaction Research at GRI Fluidized bed boilers our core business, but current R&D focus is on torrefaction. Our research team for torrefaction includes: Two Ph.Ds Two M.Scs Two Mechanical Engineers One Technician

6 Torrefaction R&D Objectives O To help industries produce superior quality torrefied wood through less expensive means by Utilizing our advanced research in science of torrefaction and our international reputation in this field Utilizing our design expertise in thermophysical process Training people in this art.

7 Current projects 1. Evaluation of torrefaction technologies 2. Effect of process parameters on torrefaction 3. Torrefaction of non-lignocellulose BM 4. Mathematical model development 5. Effect of BM size on torrfaction 6. Effect on change BM density 7. Effect of oxygen in heating medium 8. Gasification of torrefied wood

8 Some research results ON TORREFACTION

9 Effect of reactor type on torrefaction of biomass Microwave torrefaction Convective torrefiers 88% Mass yield 86% 84% 82% 80% Mass yield 78% 76% 74% Convective bed Fludized bed Rotating Drum

10 Effects of biomass size on torrefaction Effect of diameter Effect of length

11 Non-lignocellulose torrefaction Mink waste After torrefacation

12 Mathematical model of torrefaction Two step reaction Single step reaction

13 Temperature (C) Effect of temperature, residence time and biomass :28:4812:57:3613:26:2413:55:1214:24:00 Bi 65.5 o m a Time (s) Furn ace

14 Mass yield. DAF basis (%) Increase in Heating Value (%) Effect of oxygen on torrefaction 90 10% % 9% 82 8% Single Particle (25 mm dia poplar) Uemura et al., % 7% 7% 6% Oxygen Concentration (%) Oxygen Concentration (%)

15 Effect of torrefaction on explosibity of dust Explosion work in progress Grindability work in progress

16 Effect of torrefaction on density & volume

17 Facilities access Torrfaction reactors QWM reactor Fluidized bed torrefier Rotary drum torrefier Screw type torrefier Moving bed torrefier Mircrowave torrefier Torrefaction pilot plant (under erection) Special equipment Hardgrove grindability index measurer Minimum ignition energy Dust explosion chamber Grinding mill Bomb calorimeter

18 GRI thanks its collaboration without whose help it could not do these work NS Agricultural College, Truro Guelph University Dalhousie University National Institute of Technology, Durgapur, India

19 Recent publications on torrefaction 1. Biomass gasification, pyrolysis and torrefaction, Elsevier, New York, to be published early Basu, P., S. Rao, A. Dhungana An investigation into the effect of biomass particle size on its torrefaction. CSChE journal, Accepted for publication, Jan Basu, P, A. Dhungana, A. Dutta, Torrefaction of non-lignocellulose biomass waste, CSChE Basu, P Journal, DOI /cjce 20527,. (2011) 4. Basu, P, A. Dhungana, A. Dutta, Effects of Reactor Type on Torrefaction of biomass, in Print, ASME journal of Energy Resources, March Basu, P, S. Rao, B. Acharya, Effect of torrefaction on the density and volume changes of coarse biomass particles Accepted for publication in CSChE journal, Apr, Basu, P., A. Dhungana, S. Rao, B. Acharya, Effect of oxygen presence in a torrefier, submitted April P. Basu, AK, Sandhukhan, P. Gupta, S. Rao, A. Dhungana, B. Acharya, Modeling of Torrefaction of Biomass Fines, Submitted May, 2012

20 Books & Papers(> 200 research Papers)

21 Preparatory Concept market Lab Scale Pilot plant JV Demonstration plant Technology licensing

22 Thank you for your attention