低压二氧化碳水合物技术实验研究

Experimental Study on Hydrate Formation Process of Low Pressure Carbon Dioxide

利用水合物实验装置研究了低压二氧化碳水合物的相变过程。实验结果表明在二氧化碳体系中加入四丁基溴化铵可大幅度降低二氧化碳水合物形成压力,而且随着四丁基溴化铵含量的增加,水合物的相变温度升高。二氧化碳水合物形成过程包含水合物结晶成核和水合物生长过程,在水合物生长过程中,体系出现一个明显的温度升高过程。

The carbon dioxide hydrate formation process is investigated experimentally using a hydrate experimental rig.The results show that the pressure of carbon dioxide hydrate formation drops drastically by adding tetran-butyl ammonium bromide.The phase change temperature of hydrate increases with the increasing of tetra-n-butyl ammonium bromide.The process of carbon dioxide hydrate phase change includes crystal nucleus inducement and hydrate formation.This is a temperature increasing process during hydrate formation.