Patent application number | Description | Published |
20130143972 | BIOMASS GASIFICATION AND INTEGRATED PROCESSES FOR MAKING INDUSTRIAL CHEMICALS THROUGH AN ACETIC ACID INTERMEDIATE - The invention relates to integrated processes for producing industrial chemicals, such as alcohols, carboxylic acids, esters, aldehydes, olefins and polymers from biomass. In one embodiment, the invention is to a process comprising the steps of (a) introducing biomass and an oxygen stream to a gasifier and converting the biomass into a product gas, wherein the gasifier is operated at a pressure of at least 10 bar; (b) compressing the product gas at a compression ratio that is less than 5:1 to form compressed product gas; (c) directing a first portion of the compressed product gas to an alcohol synthesis reactor to produce methanol; (d) directing a second portion of the compressed product gas to a gas separator to produce a hydrogen stream and a carbon monoxide stream; (e) reacting the carbon monoxide stream with the methanol to produce acetic acid; and (f) reacting the hydrogen stream with acetic acid to produce ethanol. | 06-06-2013 |
20130143973 | BIOMASS GASIFICATION AND INTEGRATED PROCESSES FOR MAKING INDUSTRIAL CHEMICALS THROUGH AN ESTER INTERMEDIATE - The invention relates to integrated processes for producing industrial chemicals, such as alcohols, carboxylic acids, esters, aldehydes, olefins and polymers from biomass. In one embodiment, the invention is to a process comprising the steps of: introducing biomass and an oxygen stream to a gasifier and converting the biomass into a product gas, wherein the gasifier is operated at a pressure of at least 10 bar; compressing the product gas at a compression ratio that is less than 3:1 to form a compressed product gas; directing a first portion of the compressed product gas to an alcohol synthesis reactor to produce methanol; reacting carbon monoxide with the methanol to produce acetic acid; esterifying the acetic acid with ethanol to form ethyl acetate; and reducing the ethyl acetate with hydrogen in the presence of a catalyst to form ethanol. | 06-06-2013 |
20130144087 | CO-GASIFICATION OF AQUATIC BIOMASS AND COAL - The invention also relates to co-gasification processes for forming syngas from aquatic biomass and a fossil fuel. In one aspect, the invention is to a process for producing syngas, comprising: introducing aquatic biomass, a fossil fuel, water and oxygen to a gasifier and forming syngas comprising hydrogen, carbon monoxide and carbon dioxide; and feeding aquatic biomass with carbon dioxide derived from the syngas. In other aspects, the invention relates to integrated processes for producing industrial chemicals, such as alcohols, carboxylic acids, esters, aldehydes, olefins and polymers from such syngas. | 06-06-2013 |
20140326421 | Processes for Purifying a Cellulosic Material - A process for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process. | 11-06-2014 |
20140326422 | Integrated Processes for Purifying a Cellulosic Material - A process for converting a starting material to a purified pulp material, comprising removing lignin from a starting material to form a wet pulp comprising at least 5 wt. % water, extracting hemicellulose from the wet pulp with an extractant, and separating the extracted hemicellulose from the extraction mixture to form a cellulosic product comprising less hemicellulose than the wet pulp. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The process involves separating and recovering hemicellulose and separating and recycling various process streams employed in the process. | 11-06-2014 |
20150041084 | Processes for Purifying a Cellulosic Material - A process for treating a cellulosic material comprising extracting hemicellulose from the cellulosic material with an extractant comprising a cellulose solvent and a co-solvent to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulose solvent is selected from the group consisting of an ionic liquid, an amine oxide and combinations thereof, and the co-solvent may preferably have a boiling point less than 120° C., or less than 100° C. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process. | 02-12-2015 |
20150232582 | Hemicellulose Compositions - Hemicellulose compositions are prepared by treating a cellulosic material with an extractant comprising a cellulose solvent and co-solvent. The hemicellulose compositions preferably comprise from 55 to 99 wt. % xylan and have distinct molecular weights, elemental metal ions, and intrinsic viscosities when compared to known hemicellulose compositions. | 08-20-2015 |
20150233055 | Dissolving-Grade Pulp Compositions - Dissolving-grade pulp compositions are prepared by treating a cellulosic material with an extractant comprising a cellulose solvent and co-solvent. The dissolving-grade pulp compositions comprise at least 90 wt. % glucan, from 0.6 to 5 wt. % xylan, and have distinct molecular weights, and elemental metal ions from known and commercially available dissolving-grade pulp compositions. | 08-20-2015 |