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US 2026/0159460 A1Published application
Integrated bio-refinery for bio-p-xylene with internal bio-ethylene production
AssigneeUop LLC
InventorsGregory B. Kuzmanich, Dean E. Rende, Steven L. Chmura
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Abstract
Integrated processes for producing p-xylene from biomass are described. The biomass is converted to sugars which are converted to 5-hydroxymethylfurfural (HMF) which is converted to dimethylfuran (DMF). The biomass derived DMF is reacted with internally generated de-watered, unpurified ethylene to form the p-xylene. The de-watered, unpurified ethylene is also derived from sugars made from the biomass.
Claims20
An integrated process for the production of p-xylene comprising:
- pretreating biomass in a pretreatment zone to produce pretreated biomass;
- separating the pretreated biomass into at least a cellulosic pulp stream comprising cellulosic pulp, and a first soluble sugar stream comprising C5-6 soluble sugars;
- contacting at least a portion of the cellulosic pulp stream with a first acid catalyst to produce an HMF stream comprising 5-hydroxymethylfurfural (HMF);
- hydrodeoxygenating the HMF stream with a hydrodeoxygenation catalyst to produce a DMF stream comprising dimethylfuran (DMF);
- converting the C5-6 soluble sugars in at least a portion of the first soluble sugar stream forming a de-watered, unpurified ethylene stream comprising ethylene;
- and
- reacting the DMF in the DMF stream with the ethylene in the de-watered, unpurified ethylene stream in the presence of a second acid catalyst to form p-xylene.
4 more elements
An integrated process for the production of p-xylene comprising:
- pretreating biomass in a pretreatment zone to produce pretreated biomass;
- separating the pretreated biomass into at least a cellulosic pulp stream comprising cellulosic pulp, a first soluble sugar stream comprising C5-6 soluble sugars, and a lignin stream comprising lignin-derived species;
- hydrolyzing the cellulosic pulp with a cellulase enzyme in a hydrolysis reaction zone comprising a hydrolysis reactor to produce a second soluble sugar stream comprising C6 soluble sugars;
- contacting the second soluble sugar stream and optionally a portion of the first soluble sugar stream with a first acid catalyst to produce an HMF stream comprising 5-hydroxymethylfurfural (HMF);
- hydrodeoxygenating the HMF stream with a hydrodeoxygenation catalyst to produce a DMF stream comprising dimethylfuran (DMF);
- converting the C5-6 soluble sugars in at least a portion of the first soluble sugar stream forming a de-watered, unpurified ethylene stream comprising ethylene;
- and
- reacting the DMF in the DMF stream with the ethylene in the de-watered, unpurified ethylene stream in the presence of a second acid catalyst to form p-xylene.
5 more elements
Dependencies are inferred from the claim text.