鲜浒苔脱水干燥工艺的研究  

Optimization of Enteromorpha Prolifra Drying Process

作　　者：王翠苹[1] 刘淇[2] 袁婉丽[1] 

机构地区：[1]青岛大学机电工程学院,山东青岛266071 [2]中国水产科学研究院黄海水产研究所,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2009年第2期94-98,共5页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家科技支撑计划项目(2008BAC49B04);青岛市科技计划项目(08-1-7-6-hy)

摘　　要：针对鲜浒苔含水量高、难以干燥的难题,采用离心脱水和带式干燥机相结合的方式尝试解决。通过测试离心机的脱水效率和能耗,计算带式干燥机获取热空气的3种方法(电热器、热泵、热风炉)的系统能耗,在综合分析其经济性的基础上确定了鲜浒苔的脱水干燥工艺。鲜浒苔经20 min的离心脱水,送入带式干燥机,由烟气余热回收或者热泵方式获取的热风干燥48 min是最优组合。该工艺条件获得的干浒苔水分含量为5%,盐分3.5%左右(以干基计),此时系统运行的总能耗最低,经济性佳,产品质量好,是比较理想的鲜浒苔脱水干燥工艺。The drying process of Enteromorpha prolifra is studied and analyzed in this paper. Centrifuge is firstly applied for dewatering and desalting, and then belt drier is used to deeply dewater. Water content in the Enteromorpha prolifra was measured under different centrifugal working times, the energy cost and the economic analysis were compared for the three designed crafts： one method to obtain hot air used in belt drier is the electrical heating; the second method is by heat pump and the third one is by the hot-air stove. The optimum technical process of drying Enteromorpha prolifra designed in this paper is as follows： cen- trifugal dewatering is about 20 minutes firstly, the salt ratio is decreased to 3% or so, the drying in belt drier is about 48 minutes by the hot air from the hot stove or the heat pump, the dried Enteromorpha pro- lifra is achieved to 5% water content, while the drying system has less energy cost and is the best running economy.

关 键 词：浒苔 离心脱水 热风干燥 能耗 经济性 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]