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método para produzir lignina sólida a partir de material de partida rico em lignina?
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Title:
método para produzir lignina sólida a partir de material de partida rico em lignina?
Author:
ERIC ENQVIST
Subjects:
APPARATUS THEREFOR
;
CHEMISTRY
;
COMPOUNDS OF UNKNOWN CONSTITUTION
;
METALLURGY
;
ORGANIC CHEMISTRY
;
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
;
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
;
REGENERATION OF PULPING LIQUORS
;
TEXTILES
Description:
o material de partida rico em lignina é colocado em suspensão em um primeiro meio, que é ácido e aquoso, para formar uma suspensão ácida aquosa, que é aquecido e deixado para formar duas fases contínuas, uma fase de lignina termoplástica e uma fase aquosa. a fase de lignina termoplástica é separada da fase aquosa e passada através de um processo para dar conformação em um segundo meio que está em uma temperatura menor do que a da fase de lignina termoplástica e em que a fase de lignina termoplástica é essencialmente insolúvel. a lignina sólida formada no segundo meio é recuperada. Lignin-rich starting material is suspended in a first medium, which is acidic and aqueous, to form a aqueous acidic suspension, which is heated and allowed to form two continuous phases, a thermoplastic lignin phase and an aqueous phase. The thermoplastic lignin phase is separated from the aqueous phase and passed through a shape giving process into a second medium which is at a temperature lower than that of the thermoplastic lignin phase and in which the thermoplastic lignin phase is essentially insoluble. Solid lignin formed in the second medium is recovered.
Creation Date:
2017
Language:
Portuguese
Source:
esp@cenet
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