Pulp from biomass: MEA pulping process*

The innovation describes a new, effective industrial process for the production of cellulose from annual plants such as straw, rice straw, bagasse and annual plant litter. The process is based on a highly cost-effective extraction method with monoethanolamine (MEA), which is a widely available standard chemical. The complete recycling of MEA via distillation is a highly environmentally friendly process.

Compared with other state-of-the-art techniques, separating the plant components cellulose, hemicellulose and lignin is more effective and higher yields (60-70 %) can be obtained. This offers the possibility of producing cellulose for various applications (e.g. high-quality paper with hightensile strength). Furthermore, the components can be sold separately, which leads to higher revenues.

It is possible to integrate the new process into existing pulping plants with minor adaptations and an additional distillation unit for MEA recycling.

• Pulp
  
• Cellulose
  
• Monoetahnolamine
  
• MEA
  
• Pulping
  
• Extraction process
  
• Lignin
  
• Hemicellulose
  
• Paper industry
  
• Pulp industry
  
• Paper
  
• Annual plants
  

• High efficiency of the process
  
• Low production costs
  
• The process can be integrated into existing pulping plants with minor adaptations and an additional distillation unit
  
• High environmental compatibility due to a closed circuit
  
• Low recycling costs
  
• High pulp yields
  
• Superior quality of pulped cellulose
  
• In addition to cellulose, other components such as hemicellulose and lignin can also be effectively separated for re-sale
  

• Pulp production
  

Title: Method for separating lignocellulose-containing biomass

Patent no.: EP 1190137 (granted), DE 50004573 (granted), FR 1190137 (granted), PT 1190137 (granted), ES 2213011 (granted), CA 2368872 (granted), CN ZL 00806162.9 (granted), CZ298831 (granted), ID 0009844 (granted), IN 210363 (granted), ZA 2201/8406 (granted), RU 2220245 (reinstatement 11 Apr 2009), BR PI00111694 (pending), USA 09/958,76 (pending)

Date of Priority: 12. APR 1999 - DE 19916347


To acquire a licence for this new technology, please do not hesitate to contact us!

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*The patents are the property of ZYLUM Beteiligungsgesellschaft mbH &Co. Patente II KG