Bagasse and black-liquor cogeneration: Overview
How sugar and paper mills power themselves on their own leftovers
What this tile covers Sugar and paper mills burning their own residues for steam and power. Share of use 0.4% share of final energy use supplied (2020)Share of world final energy use (about 435 EJ, the same denominator as Conversion and use) supplied by recovered or reused energy, where a global figure exists; most methods have no global total and are left null Black liquor alone: about 170 Mt dry solids holding about 2 EJ a year, at an assumed 80% overall cogeneration efficiency (IRENA and ETIP give 70-90% for biomass CHP), about 1.6 EJ useful (calculated). Bagasse not included, so a lower bound. About 1.6 EJ a year, divided by world final energy use of about 435 EJ (calculated). Source: Black liquor (technology description), Climate Technology Centre and Network (UNEP/UNIDO).
Key facts
| Heat grade | Process heat |
Included from the reference tables
- Bagasse cogeneration
- Black liquor recovery boilers
- Back-pressure steam turbines
Linked to the material world
Su SugarTm TimberAlso in Heat to power and cogeneration
WHR Waste-heat power (steam Rankine)ORC Organic Rankine, Kalina and sCO2 cyclesTrb Engine exhaust recoveryCHP Combined heat and powerCDQ Steel plant energy recoveryExplore paths from here
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