快速可逆天然气水合物储存水凝胶体系构建及其过程强化研究

Application of hydrate technology in storage of natural gas, hydrogen and cold energy can improve efficiency and lower energy consumption at the same time. The key to solve the problem is rapid, reversible hydrate materials. This project proposed a new hydrogel material supported by metal construction for gas storage in hydrate form, which is able to realize rapid, high-capacity, and reversible gas storage. The introduction of hydrogel is a solution for water dispersion and loss, and at the same time gas storage rate improvement. Metal foam in hydrogel helps to enhance the heat, mass transfer, and speeding up the gas storage process. Gas storage in hydrogel supported by metal foam (screen-like) is totally reversible. Plus, by adding certain additives can achieve reversible gas storage under moderate conditions. This project is dedicated to investigate issues like: mass and heat transfer and process simulation of gas storage and discharge; establishment of mathematical models and parameters development; match among metal foam, metal screen, nonmetal screen and hydrogel-hydrate system; mechanism and properties of heat conduction enhancement; characteristics of a new gas storage system and its amplification etc.. This study will enrich the theory, methods and achievements in materials for energy storage and engineering thermal physics, and promote the progress of hydrate technology.

采用水合物技术储存天然气、氢气和蓄冷可提高效率、降低能耗，其中快速、重复使用的水合物材料和过程是解决问题的关键。本项目提出了新型金属构型物支撑水凝胶水合物储气材料可实现高速、大容量、可逆储气过程。引入水凝胶解决水的分散和流失问题，同时提高储气速度;在水凝胶中支撑泡沫金属有助于增强导热、质量传递，从而加快水合储气过程；新型金属泡沫（丝网）支撑水凝胶水合物储气材料能够实现可逆储气；另外，通过筛选添加剂可实现低压可逆储气过程。研究储放气过程的质量传递、热量传递和过程模拟计算问题，建立该过程的数学模型，完善相应参数；研究材料组配如泡沫金属、金属丝网、非金属丝网等和水凝胶水合物的配伍性，以及在增强导热方面的机理、性能；研究新型储气系统的特性以及放大等问题。本研究将丰富储能材料和工程热物理理论、方法和成果，推动水合物技术进步。