无机陶瓷膜澄清食醋工艺研究  

Study on the process of inorganic ceramic micro-filtration membrane filtrating vinegar

作　　者：刘有智[1] 谷磊[1] 申红艳[1] 高璟[1] 

机构地区：[1]中北大学化学工程技术研究中心,山西太原030051

出　　处：《化学工程》2007年第7期34-37,共4页Chemical Engineering(China)

基　　金：山西省科技攻关基金资助项目(051208)

摘　　要：为了除去老陈醋中的细菌和沉淀物,采用无机陶瓷膜对含有菌体和沉淀物的老陈醋进行过滤实验研究。通过研究无机陶瓷膜平均孔径、跨膜压差、膜面流速、操作温度、料液浓缩比、流动状态等操作条件对老陈醋过滤效果的影响,确定了适宜的工艺分离条件:膜孔径100 nm、室温(30℃以下)、跨膜压差0.14 MPa、雷诺数5 000、膜面流速2.0 m/s、最大浓缩倍数为9。在适宜的工艺分离条件下,平均通量可达40 L/(m2.h);过滤后食醋的理化和卫生指标均符合国家标准,且放置2年后无沉淀现象。因此,采用无机陶瓷膜澄清食醋在技术上是完全可行的方法。In order to remove the bacterium and suspended solid in super-mature-vinegar, the super-mature-vinegar containing bacteria and suspended solid was treated by using inorganic ceramic membrane micro-filtration technology. The effects of operational parameter on the filtrating efficiencies of membrane such as average pore size of membrane, trans membrane pressure drop, cross-flow velocity, operation temperature, material concentration proportion, flow status were studied. The proper operation parameter was determined, including membrane pore size 100 nm, room temperature 30 ℃ below , trans membrane pressure drop 0.14 MPa, Reynolds number 5 000, cross-flow velocity 2. 0 m/s, max. concentration proportion 9. Under the proper operational condition, the membrane mean permeability could reach 40 L/（ m^2· h ）. The physic-chemical and health indexes of vinegar obtained could meet the national quality standard for vinegar, no turbidity was observed after two years. Thus, filtrating super-mature-vinegar using inorganic ceramic membrane is absolutely feasible.

关 键 词：陶瓷膜 食醋 微滤 膜渗透通量 

分 类 号：TS264.22[轻工技术与工程—发酵工程]