一种可降解包装废弃物有害成分分离后再利用的工艺

• Format: Patent
• Language: Chinese
• Published: 12.11.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; DISPOSAL OF SOLID WASTE; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECLAMATION OF CONTAMINED SOIL SOIL; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

本发明涉及废弃物回收再利用技术领域，具体涉及一种可降解包装废弃物有害成分分离后再利用的工艺。所述工艺包括以下步骤：可降解包装废弃物金属成分选择性溶解分选；浮选料与添加料混合模压；近临界水分解新料；分解产物表面处理；改性粉末制备环氧树脂复合材料。本发明通过将模压后的包装废弃物放入盐浴炉中加热至300℃以上进行近临界水解，并加入催化剂苯酚，从而破坏包装废弃物中的树脂结构，通过近临界水解对包装废弃物中的主要成分即各类树脂材料进行分解，并且，通过催化剂苯酚进一步地促进树脂材料的化学键断裂，从而加快分解速度，并将树脂分解为小分子材料，从而便于随后进行再利用。 The invention relates to the technical field of waste recycling, in particular to a process for recycling degradable packaging waste after harmful components are separated. The process comprises the following steps: selectively dissolving and sorting degradable packaging waste metal components; carrying out mixed mould pressing on the flotation materials and additives; performing near-critical water decomposition on the new material; surface treatment of decomposition products; preparing the epoxy resin composite material from the modified powder. According to the method, the molded packaging waste is put into the salt bath furnace to be heated to 300 DEG C or above for near-critical hydrolysis, phenol serving as a catalyst is added, so