PLA Crystallizer-Dryer

PLA Crystallizer-Dryer，結晶干燥機，PLA結晶機，PLA Crystallization & Drying Unit** - **PLA Thermal Crystallization Dryer**PLA結晶干燥系統(tǒng)介紹 一、中文部分 聚乳酸（PLA）結晶干燥系統(tǒng)是針對生物可降解材料PLA特性設計的專用預處理設備，通過**控制溫度、濕度和時間參數(shù)，實現(xiàn)材料結晶度優(yōu)化與水分去除的雙重目標。 1. 核心原理 PLA作為半結晶聚合物，其結晶度直接影響*終產品的熱穩(wěn)定性與機械性能。該系統(tǒng)通過階梯式升溫（60-100℃）誘導分子鏈有序排列形成晶體結構，同時采用除濕干燥技術將原料含水率降至50ppm以下。獨特的雙螺桿攪拌設計可提升熱傳導效率，確保材料受熱均勻性。 2. 系統(tǒng)構成 由預熱單元、結晶段（控溫精度±1℃）、雙級分子篩干燥塔、閉環(huán)除濕系統(tǒng)和智能控制系統(tǒng)組成。配備紅外水分檢測儀與在線結晶度分析模塊，實現(xiàn)工藝參數(shù)的實時閉環(huán)調節(jié)。 3. 技術特點 - 結晶度控制范圍：10-40%（可編程調節(jié)） - 干燥能耗：≤0.25kWh/kg（行業(yè)**水平） - 處理能力：500-5000kg/h（模塊化設計） - 殘氧量控制：＜100ppm（防降解保護） 4. 應用價值 在注塑成型領域可使制品熱變形溫度提升20℃以上；紡絲應用減少斷頭率40%；薄膜生產實現(xiàn)結晶度均勻性±2%控制。系統(tǒng)兼容PLA/PBAT等生物基材料共混處理，符合食品級GMP標準。 二、English Part PLA Crystallization & Drying System The PLA crystallization and drying system is a specialized pretreatment equipment designed for biopolymer processing. It integrates precise thermal management and moisture control to optimize material properties for downstream processing. 1. Technical Principle This system employs a three-stage process: preheating (40-60℃), crystallization (controlled at 80-110℃), and deep drying (dew point -40℃). The crystallization phase induces 15-35% crystallinity through controlled thermal history, while the desiccant wheel dryer achieves <100ppm moisture content. Advanced PID algorithms maintain temperature uniformity within ±0.5℃ across material bed. 2. System Configuration Comprises: - Twin-screw preheater with variable frequency drive - Multi-zone crystallization chamber (8 independently controlled zones) - Rotary dehumidifier with silica gel/PVDF composite desiccant - Energy recovery unit (85% heat reclaim efficiency) - HMI interface with SCADA connectivity 3. Key Parameters - Throughput: 0.5-5 ton/hour - Power consumption: 0.28-0.35 kWh/kg - Crystallization time: 15-120min (adjustable) - Airflow velocity: 0.3-0.8m/s (optimized for PLA pellets) 4. Performance Advantages - Increases HDT of molded parts to 110-130℃ - Reduces cycle time by 25% in injection molding - Achieves 99.7% crystallinity consistency - Meets FDA 21 CFR compliance for food contact - 30% energy saving compared to conventional systems 在全球30+家生物塑料生產企業(yè)成功應用，平均提升制品良率18%，降低能耗成本22%。典型投資回報周期＜2年。（Total words: 890）