技术中心

【中文摘要】 为探讨新型蓄冷工质异丁烷水合物快速生成的影响因素,利用自行设计的小型搅拌式水合物制备系统,在定容法实验条件下,比较不同水量、搅拌速率、初始冷媒温度、水样条件下水合物的生成特性。实验结果表明:水量为200mL时,有着较大的气液空间比,利于水合物的生成;适当的搅拌速率增加扰动,有效改善气水体系传质力,利于水合物生成,但搅拌速率过大易使水合物分解;初始冷媒温度越低,过冷度越大,水合物生成量越多;历史水具有"记忆效应",诱导时间最短;相对于历史水和蒸馏水,水合物在自来水中总生成量不多。 【英文摘要】 A small agitating type gas hydrate preparation apparatus was designed to examine the influence on rapid formation of a new heat storage medium-isobutene gas hydrate. The experiment was conducted on the isobutene gas hydrate formation with the constant volume method at different water volume, stirring speed, initial coolant temperature, and water sample. The results show that more hydrate could be obtained with the water volume of 200ml because of larger gas-liquid space ratio. The proper stirring speed (250r/m) could increase disturbance and improve gas-liquid mass transfer, leading to quick hydrate formation while excessive stirring speed could cause hydrate decomposition. The hydrate formation increased with the decrease in the initial coolant temperature and the increase in the subcooling degree. In addition, historical water could reduce the induction time for its "memory effect" and tap water was less beneficial to hydrate formation than historical water and distilled water. 【中文关键词】 热工学; 气体水合物; 异丁烷水合物; 水量; 搅拌速率; 初始冷媒温度; 水样 【英文关键词】 Pyrology; Isobutene gas hydrate; Water volume; Stirring rate; Initial coolant temperature; Water sample