Abstract

In this research, the kinetics of CO₂ hydrate formation in the presence and absence of TBAOH as a thermodynamic additive and tween as a kinetic additive is investigated. A high-pressure autoclave equipped with a rocking-cell mixer was applied to determine the effect of TBAOH and tween on the process of carbon dioxide hydrate formation. The findings of the experiments show that using TBAOH had a dual effect on the formation of carbon dioxide hydrate. Low concentrations of TBAOH presented a positive effect on the CO₂ hydrate formation kinetics but using this component with a mass fraction of 8% inhibited the quantity of gas uptake and storage capacity (SC) at the feed pressure of 3 MPa. Using 10 and 300 ppm tween 80 promotes the formation of CO₂ hydrate kinetics. Investigating the influence of simultaneous utilization of TBAOH and tween 80 on the quantity of the formation CO₂ hydrate showed that this system decreased the quantity of CO₂ uptake in comparison with aqueous solutions of tween and TBAOH.

摘要

在这项研究中，研究了在存在和不存在 TBAOH 作为热力学添加剂和吐温作为动力学添加剂的情况下CO ₂水合物形成的动力学。使用配备摇摆池混合器的高压釜来确定 TBAOH 和吐温对二氧化碳水合物形成过程的影响。实验结果表明，使用TBAOH对二氧化碳水合物的形成具有双重作用。低浓度的 TBAOH 对 CO ₂水合物的形成动力学有积极影响，但使用质量分数为 8% 的该组分在 3 MPa 的进料压力下抑制了气体吸收和储存容量 (SC) 的数量。使用 10 和 300 ppm 吐温 80 会促进 CO ₂的形成水合物动力学。研究同时使用 TBAOH 和吐温 80 对形成 CO ₂水合物数量的影响表明，与吐温和 TBAOH 的水溶液相比，该系统降低了 CO ₂吸收量。