Solvolysis process for solid renewable feedstock

The solvolysis process effectively converts solid renewable biomass into biocrude by combining thermal drying, mechanical dewatering, and low-pressure solvolysis, addressing the challenges of high-pressure thermal treatment and producing high-quality hydrocarbons for fuels and chemicals.

WO2026132661A1PCT designated stage Publication Date: 2026-06-25UPM KYMMENE OYJ
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
UPM KYMMENE OYJ
Filing Date
2025-12-17
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Converting solid renewable biomass into valuable chemicals and hydrocarbons is challenging, particularly due to the need for high operational pressures in thermal treatment processes like Hydrothermal Liquefaction (HTL), and there is a need for an improved process to overcome this challenge.

Method used

A solvolysis process that includes feedstock conditioning with thermal drying and mechanical dewatering, followed by solvolysis at low pressure, fractionation, and extraction to produce biocrude, which is then upgraded to produce hydrocarbons suitable as fuels or fuel blending components.

Benefits of technology

The process enables efficient conversion of solid renewable feedstock into pumpable and storable biocrude with reduced oxygen content, minimizing capital costs and energy consumption, and producing high-quality products like sustainable aviation fuel.

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Abstract

The present disclosure relates to solvolysis of a substantially solid renewable feedstock (10) comprising forest industry residue(s). More in detail the disclosure relates to a process for converting substantially solid renewable feedstock (10) to renewable liquid product(s), wherein the process comprises feedstock conditioning (100); which comprises one or more of washing, mechanical dewatering (101), thermal drying (102) and pretreatment in the presence of solvent (103) to obtain a feed mixture (30); subjecting the feed mixture (30) to solvolysis (200); fractionation (210); extraction (300) and optional upgrading of the obtained purified biocrude. The present disclosure further relates to the use of the obtained product(s).
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