| 中空纤维膜双向流工艺浓缩回收胶清橡胶的研究 |
| Recovery for Skim Rubber Using Bi-directional Flow Ultrafiltration with PVDF Hollow Fiber |
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| DOI： |
| 中文关键词: 中空纤维膜 双向流工艺 浓缩 胶清 |
| 英文关键词: hollow fiber membrane bi directional flow process concentration skim rubber |
| 基金项目:国家支撑计划基金项目（2013BAF08B02）；海南省重点科技计划基金项目（ZDXM20120090）；海胶集团重点研究基金项目（KY-2012-6）；海南大学青年基金项目（qnjj1238） |
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| 中文摘要: |
| 利用聚偏氟乙烯（PVDF）中空纤维膜设计内压膜双向流工艺的超滤浓缩装置，研究膜面压差、温度以及膜面流速对干胶回收率和氨去除率的影响，同时对浓缩回收后胶清橡胶生胶的质量指标进行测定。结果表明：胶清干胶回收率随着膜面压差的增大而增大，随着温度和膜面流速的升高而减小。氨去除率随着膜面压差的增大而减小，随着温度的升高而增大，膜面流速对氨去除率的影响不显著。随着膜面压差的增大，浓缩处理时间先缩短后延长；随着温度和膜面流速的升高，浓缩处理时间均缩短。经过浓缩处理，胶清橡胶生胶质量都可以达到一级胶清橡胶质量标准。 |
| 英文摘要: |
| In this study，the influence of transmembrane pressure difference，operating temperature and crossflow velocity on the skim rubber recovery as well as efficiency of ammonia removal were investigated，using a bi-directional flow（BDF）ultrafiltration equipment with polyvinylidene fluoride （PVDF） hollow fiber as the membrane material.Then，the quality of the recovered skim rubber was analyzed.The results showed that，the recovery of skim rubber increased with the increase of transmembrane pressure difference，and decreased with the increase of operating temperature or crossflow velocity.The efficiency of ammonia removal decreased with the increase of transmembrane pressure difference and increased with the increase of temperature.It was not affected significantly by crossflow velocity.As the transmembrane pressure difference increased，the targeted processing time was shortened at first and then extended.With the increase of operating temperature or crossflow velocity，the target processing time was reduced.The quality of the skim rubber via the BDF process reached the first grade standard by the Ministry of Agriculture. |
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