Method for utilizing components from hybrid textile waste

• Main Authors: HEHIR RACHID, WEILACH CHRISTIAN, KLAUS-NIETROST CHRISTOPH, THEIS, STEFAN
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MAKING GRANULES OR PREFORMS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; POLYSACCHARIDES; PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method of treating and utilizing a waste liquid containing at least a polyester degradation product and derived from an alkaline decomposition process for obtaining a cellulosic raw material from a hybrid textile waste containing at least one cellulosic component and a polyester component. In order to make the process more environmentally friendly and more resource-saving, it is proposed that the process comprises the steps of evaporating water from the waste liquid to precipitate the polyester degradation product from the waste liquid and to obtain a two-phase mixture having an aqueous phase and a solid phase comprising the polyester degradation product, b) separating the solid phase from the aqueous phase, and c) utilizing the solid phase with heat/energy. 处理和利用含有至少聚酯降解产物并源自用于从含有至少一种纤维素组分和聚酯组分的混合型纺织废料中获取纤维素原材料的碱性分解工艺的废液的方法。为了使该方法更加环保和更加节约资源，提出该方法包括以下步骤：从废液中蒸发水，以从废液中沉淀聚酯降解产物并获得具有水相和包含聚酯降解产物的固相的两相混合物，b)将固相与水相分离，和c)热/能量利用固相。