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Process for liquefying a cellulosic material

A cellulose and acid catalyst technology, applied in the preparation of liquid hydrocarbon mixtures, sugar production, biological raw materials, etc., can solve the problems of low-value insoluble humus and poor utilization of lignocellulosic raw materials

Inactive Publication Date: 2013-01-23
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the described method is the production of large amounts of low-value insoluble humus, and thus the poor utilization of the lignocellulosic raw material

Method used

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  • Process for liquefying a cellulosic material
  • Process for liquefying a cellulosic material
  • Process for liquefying a cellulosic material

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Embodiment

[0070] The present invention is further described below by the following non-limiting examples and comparative examples.

[0071] The application of birch concentrations of 12wt% and 20wt% and various cosolvents and reaction times to study the acid-catalyzed birch hydrolysis experiment was carried out according to the following general conditions:

[0072]Birch wood (particle size 2 SO 4 The aqueous solution was initially hydrolyzed, and water was subsequently injected into the system to flush the catalyst feed line, resulting in a final 3 wt% H 2 SO 4 concentration. Samples were taken from the reactor periodically and the hydrolysis was terminated after the desired reaction time by forced cooling of the reactor contents to room temperature. Insoluble humic material was isolated by filtration through a P3 filter, subsequently washed with acetone and dried under vacuum (200 mbar) at 50° C. overnight.

[0073] The samples were analyzed for organic acids, 5-hydroxymethylfurfu...

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Abstract

A process for liquefying a cellulosic material comprising hydrolysing the cellulosic material in the presence of an acid catalyst in a solvent mixture to produce a liquefied product, wherein the solvent mixture contains water and in the range of 5 to 95 wt% of a co-solvent and wherein the co-solvent is present in an amount of less than or equal to 90% by weight based on the weight of water and co-solvent, which co-solvent comprises one or more polar solvents, and wherein the solvent mixture is at least partly recycled.

Description

technical field [0001] The present invention relates to a method of liquefying cellulosic material. The methods provide products that can be converted into biofuel components for use in fuel formulations. More specifically, the present invention relates to methods comprising hydrolyzing lignocellulosic material in the presence of an acid catalyst, resulting in useful monomeric and oligomeric products that can be converted into biofuel components. Background technique [0002] Lignocellulosic materials are of considerable interest as feedstocks for the production of sustainable biofuels, which can be converted into valuable intermediate products that can be further processed into fuel components. [0003] Biofuels are combustible fuels, usually derived from biological sources, which lead to a reduction in greenhouse gas emissions. Biofuels used to blend with traditional gasoline fuel components are alcohols, especially ethanol. Biofuels such as fatty acid methyl esters der...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C08H8/00C12P7/00
CPCC10G2300/1014C13K1/02C12P7/00C10G2300/805C10G2300/4081C10G2300/44C10G1/00C08H8/00Y02P30/20
Inventor K·L·沃恩赫贝尔J-P·朗格
Owner SHELL INT RES MAATSCHAPPIJ BV