INTEGRATION OF NON-WOODY BIOREFINING AT PULP AND PAPER PLANTS

摘要

In some variations, a process is provided for producing a pulp product at a biorefinery site, comprising: converting a woody cellulosic material to a first pulp stream; converting a non-woody cellulosic material to a second pulp stream; blending the second pulp stream into the first pulp stream; and recovering or further processing the blended pulp stream as a pulp product. Biorefinery site infrastructure may be shared between the woody and non-woody lines. Also, the process may include process integration of mass and/or energy between the woody and non-woody lines. The process may be a retrofit addition to a pulp plant, or a greenfield biorefinery site. The non-woody line also can generate fermentable sugars, for fermentation to ethanol (or other products). Through allocation of carbon credits from the ethanol to the pulp, the final pulp product life-cycle profile can be improved.

主权项

1. A process for producing a pulp product, said process comprising:
(a) at a biorefinery site, converting a first biomass feedstock to a first pulp stream, wherein said first biomass feedstock comprises a woody cellulosic material; (b) at said biorefinery site, converting a second biomass feedstock to a second pulp stream, wherein said second biomass feedstock comprises a non-woody cellulosic material; (c) blending at least a portion of said second pulp stream, or a treated form thereof, into said first pulp stream, thereby generating a blended pulp stream; and (d) recovering or further processing at least some of said blended pulp stream as a pulp product.