Biomass Gasification for Pulp and Paper Industry Sustainability

 
Fossil free tissue drying
 
Lars Nilsson
Karlstad University
 
One possible industrial application of biomass
gasification for the pulp and paper industry
 
Source: www.skogsindustrierna.org
 
Tissue products
 
 - Toilet paper
 - Kitchen towels
 - Napkins
 - Facials
 - ……….
 
Tissue drying process
 
Condensing steam inside the cylinder
Impinging hot gases
 
Research questions
 
Is gasification technology commercially available?
Will the need for energy gas increase?
Effects of process integration?
 
Scale of the gasification plant
 
Machine speed
      
1500 m/min
Machine width
      
3 m
Grammage
       
17 g/m
2
Press dryness
       
45 %
Creping dryness
      
95 %
Specific drying energy
    
3,0 MJ/kg H
2
O
Impingement drying contribution
 
50 %
 
Gas production roughly 2 MW
 
GoBiGas 20 MW (demo) and 100 MW (full scale)
 
Proposed gasification technologies
 
Updraft fixed bed
  
Downdraft fixed bed
Not OK!
    
OK!
 
Proposed gasification technologies
(continued)
 
Suspension gasifier
OK!
 
Proposed gasification technologies
(continued)
 
Dual bed gasifier
OK!
 
Proposed gasification technologies
(continued)
 
Two stage gasifier
OK!
 
Results from tissue drying model
 
Syngas has a lower heating value than LPG.
A higher gas flow is needed. This means that
more energy is used for heating the energy gas
to the working temperature of the hood.
 
A detailed simulation model has revealed that
the increased need for energy gas is lower than
3 % for all cases investigated.
 
Integrated or stand-alone
gasification?
 
Today, steam is produced in a bioboiler.
Tissue drying is the main steam consumer.
Today´s biomass consumption is 2830 kg/h.
 
Today, LPG for tissue drying is bought.
 
When producing the energy gas on-site, excess heat can
be used for steam generation.
 
Base case energy system
 
Integrated gasification process
 
Stand-alone gasification process
 
Increased biomass consumption
for replacing the bought LPG
 
Benefits of process integration
 
Could the bought LPG be replaced with bought
”green” energy gas?
 
Research questions revisited
 
Gasification technology is commercially available!
 - What about burners?
 
Need for energy gas only increases marginally.
 
Benefits of process integration are obvious!
 - Will ”green energy gas” be available?
 
More details
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Explore the sustainable application of biomass gasification in the pulp and paper industry, focusing on fossil-free tissue drying and energy systems. Discover proposed gasification technologies and the potential impacts on energy production and environmental sustainability.

  • Biomass
  • Gasification
  • Sustainability
  • Pulp and Paper
  • Energy Systems

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  1. Fossil free tissue drying Environmental and energy systems Lars Nilsson Karlstad University One possible industrial application of biomass gasification for the pulp and paper industry

  2. Environmental and energy systems Source: www.skogsindustrierna.org

  3. Tissue products Environmental and energy systems - Toilet paper - Kitchen towels - Napkins - Facials - .

  4. Tissue drying process Environmental and energy systems Condensing steam inside the cylinder Impinging hot gases

  5. Research questions Environmental and energy systems Is gasification technology commercially available? Will the need for energy gas increase? Effects of process integration?

  6. Scale of the gasification plant Environmental and energy systems Machine speed Machine width Grammage Press dryness Creping dryness Specific drying energy Impingement drying contribution 1500 m/min 3 m 17 g/m2 45 % 95 % 3,0 MJ/kg H2O 50 % Gas production roughly 2 MW GoBiGas 20 MW (demo) and 100 MW (full scale)

  7. Proposed gasification technologies Environmental and energy systems Updraft fixed bed Not OK! Downdraft fixed bed OK!

  8. Proposed gasification technologies (continued) Environmental and energy systems Suspension gasifier OK!

  9. Proposed gasification technologies (continued) Environmental and energy systems Dual bed gasifier OK!

  10. Proposed gasification technologies (continued) Environmental and energy systems Two stage gasifier OK!

  11. Results from tissue drying model Environmental and energy systems Syngas has a lower heating value than LPG. A higher gas flow is needed. This means that more energy is used for heating the energy gas to the working temperature of the hood. A detailed simulation model has revealed that the increased need for energy gas is lower than 3 % for all cases investigated.

  12. Integrated or stand-alone gasification? Environmental and energy systems Today, steam is produced in a bioboiler. Tissue drying is the main steam consumer. Today s biomass consumption is 2830 kg/h. Today, LPG for tissue drying is bought. When producing the energy gas on-site, excess heat can be used for steam generation.

  13. Base case energy system Environmental and energy systems

  14. Integrated gasification process Environmental and energy systems

  15. Stand-alone gasification process Environmental and energy systems

  16. Increased biomass consumption for replacing the bought LPG Environmental and energy systems

  17. Benefits of process integration Environmental and energy systems Could the bought LPG be replaced with bought green energy gas?

  18. Research questions revisited Environmental and energy systems Gasification technology is commercially available! - What about burners? Need for energy gas only increases marginally. Benefits of process integration are obvious! - Will green energy gas be available?

  19. More details Environmental and energy systems

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