Abstract

Phenol separation-concentration from phenolic resin effluents using ultrafiltration membranes for phenol recovery was studied for the purposes of this work. Ultrafiltration membranes, used at both laboratory and pilot scale, provided the requisite experimental data for the creation of an industrial-level proposal. The feasibility of the large-scale use of membranes was assessed, and phenol rejection and permeation at the industrial level were predicted by calculating mass transfer coefficients, using diffusion models and the Lévêque relationship. DWSIM - Open Source Chemical Process Simulator software was used to predict the rejection and permeation of phenol at the industrial scale. Scale experiments revealed that 82-84% of phenol was recovered; the mass transfer coefficient indicated a high level of water permeation through UF membranes, with a prediction of phenol rejection with an 8% margin for error, relative to pilot scale data. The membrane area for industrial requirements resulted in 9 m² with 3000 Da. According to the simulation software, the phenol flux in the reject and permeate streams was consistent with experimental data, demonstrating the similarity between the membrane scales.

摘要

为了这项工作的目的，研究了使用超滤膜回收苯酚从酚醛树脂流出物中分离-浓缩苯酚。用于实验室和中试规模的超滤膜为创建工业级提案提供了必要的实验数据。评估了大规模使用膜的可行性，并通过计算传质系数、使用扩散模型和 Lévêque 关系预测了工业水平的苯酚排斥和渗透。DWSIM - 开源化学过程模拟器软件用于预测工业规模苯酚的排斥和渗透。规模实验表明，回收了 82-84% 的苯酚；传质系数表明通过超滤膜的水渗透率高，相对于中试规模数据，预测苯酚排斥的误差为 8%。工业要求的膜面积为 9 m²与 3000 道尔顿。根据模拟软件，截留流和渗透流中的苯酚通量与实验数据一致，证明了膜尺度之间的相似性。