文档介绍：分离分析化学- 1- 广州奥凯纳滤膜分离设备, 纳滤膜分离设备厂家, 纳滤膜分离设备技术参数, 纳滤膜分离设备方案。 1 膜技术介绍 概述膜分离是在 20 世纪初出现, 20世纪 60 年代后迅速崛起的一门分离新技术[1]。膜分离技术(Membrane Separation Technology) 以选择性透过膜为分离介质,当膜两侧存在某种推动力( 如压力差、浓度差、电位差等) 时,原料侧组分选择性地透过膜,以达到分离、提纯的目的。膜分离技术以其低能耗、高效率被认为是理想的分离技术之一。由于其兼有分离、浓缩、纯化和精制的功能,又有高效、节能、环保、分子级过滤及过滤过程简单、易于控制等特征,因此, 目前已广泛应用于食品、医药、生物、环保、化工、冶金、能源、石油、水处理、电子、仿生等领域,产生了巨大的经济效益和社会效益,已成为当今分离科学中最重要的手段之一。 Membrane with selective separation of functional materials. Use of membrane separation selectivity to achieve the ponents of feed liquid separation, purification, concentration process called membrane separation. It is different with traditional filtration, membrane separation in molecular range, and this process isa physical process, no phase change and additives. The pore size of the membrane is micron level, on the basis of the apertures of different ( or MWCO), the film is divided into microfiltration, ultrafiltration, nanofiltration and reverse osmosis membrane, according to different materials, can be divided into anic membrane anic membrane, anic membrane microfiltration membrane mainly only level, the main ceramic film and metal film. Organic film is made of polymer 分离分析化学- 2- material, such as cellulose acetate, aromatic polyamide, PES, poly fluorine polymer. 膜分离优点: ★常温下进行: 有效成分损失极少,特别适用于热敏性物质,如抗生素等医药、果汁、酶、蛋白的分离与浓缩●无相态变化: 保持原有的风味, 能耗极低, 其费用约为蒸发浓缩或冷冻浓缩的 1/3-1/8 ◆无化学变化: 典型的物理分离过程,不用化学试剂和添加剂,