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高压、低温条件下,烃类气体与水形成水合物,堵塞天然气管道;为此,石油、天然气工业界需要研究抑制水合物的方法。另一方面由于许多水合物具有适宜的相变温度、压力、较大的相变潜热与冰蓄冷器相当的蓄冷密度,故可利用水合物进行蓄冷,以解决诸如城市空调冷负荷高峰与城市用电尖峰一致所造成的电网峰值不平衡等问题,从而产生巨大的经济效益。因此,水合物蓄冷技术的研究是极具发展前途和吸引力的。华南理工大学化工研究所通过对制冷剂R142B气体水合物分解放冷过程的研究,探讨了分解过程热传递机理,建立了热力学分解模型,并用实验数据加以验证。研究表明,分解速度与放冷过程温差、水合物晶体疏松度、水合物密度有关,放冷数学模型分析与实验结果相吻合,从而为水合物蓄冷技术进入实用化打下了良好的基础。
Under the conditions of high pressure and low temperature, hydrocarbon gas and water form hydrate, clogging the natural gas pipeline; therefore, the oil and gas industry needs to study the method of inhibiting hydrates. On the other hand, since many hydrates have suitable phase transition temperature, pressure, large latent heat of transformation and the corresponding storage density of ice storage, the hydrate can be used for storage to solve the problems such as urban air-conditioning cooling load peak and urban use Electricity peak caused by the peak grid imbalance and other issues, resulting in huge economic benefits. Therefore, the study of hydrate storage technology is very promising and attractive. South China University of Chemical Technology Institute of Refrigeration R142B gas hydrate decomposition by the cooling process, explores the heat transfer mechanism of the decomposition process, established a thermodynamic decomposition model, and verified with experimental data. The results show that the decomposition rate is related to the temperature difference during cooling, the porosity of hydrate crystals and the hydrate density. The mathematical model of cooling and cooling is consistent with the experimental results, which lays a good foundation for the practical application of hydrate storage technology.