化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
5期
1748-1759
,共12页
气体水合物%油水乳液%吸收-水合%分离塔
氣體水閤物%油水乳液%吸收-水閤%分離塔
기체수합물%유수유액%흡수-수합%분리탑
gas hydrate%water-in-oil emulsion%absorption-hydration%separation tower
水合物技术应用于低沸点气体混合物分离的优势在于其可在0℃左右操作,因此可极大地降低制冷所消耗的能量。由于此分离方法尚处在理论研究阶段,还不能实现工业化,因此对操作流程模拟计算的研究很有必要。采用非平衡级法(速率法)对水合塔-吸收塔串联操作流程进行了模拟计算,其中涉及水合物生成动力学模型、水合物分解动力学模型以及混合气体在乳液相的吸收传质动力学模型。探讨了两个串联分离塔操作参数,如温度、压力等,对分离效率的影响,所得结果对水合物技术分离低沸点气体混合物流程的设计有重要意义,同时也可为以后的工业化奠定一定的理论基础。
水閤物技術應用于低沸點氣體混閤物分離的優勢在于其可在0℃左右操作,因此可極大地降低製冷所消耗的能量。由于此分離方法尚處在理論研究階段,還不能實現工業化,因此對操作流程模擬計算的研究很有必要。採用非平衡級法(速率法)對水閤塔-吸收塔串聯操作流程進行瞭模擬計算,其中涉及水閤物生成動力學模型、水閤物分解動力學模型以及混閤氣體在乳液相的吸收傳質動力學模型。探討瞭兩箇串聯分離塔操作參數,如溫度、壓力等,對分離效率的影響,所得結果對水閤物技術分離低沸點氣體混閤物流程的設計有重要意義,同時也可為以後的工業化奠定一定的理論基礎。
수합물기술응용우저비점기체혼합물분리적우세재우기가재0℃좌우조작,인차가겁대지강저제랭소소모적능량。유우차분리방법상처재이론연구계단,환불능실현공업화,인차대조작류정모의계산적연구흔유필요。채용비평형급법(속솔법)대수합탑-흡수탑천련조작류정진행료모의계산,기중섭급수합물생성동역학모형、수합물분해동역학모형이급혼합기체재유액상적흡수전질동역학모형。탐토료량개천련분리탑조작삼수,여온도、압력등,대분리효솔적영향,소득결과대수합물기술분리저비점기체혼합물류정적설계유중요의의,동시야가위이후적공업화전정일정적이론기출。
It has been accepted that separation of low boiling-point gas mixturevia hydrate technology has the advantage of operating at around 0℃, and therefore can reduce the refrigerating energy consumption dramatically. It is necessary to study the simulation algorithm for the operation process because this separation technique is still at the stage of theoretical research and has not fulfilled practical industrial application. In this work, a process of hydration and absorption two-tower series operation was simulated by using the non-equilibrium stage approach, which involved hydrate formation kinetic model, hydrate dissociation kinetic model, and mass transfer kinetic model when gas was absorbed in water-in-oil emulsion. The effect of operation parameters of two series towers, such as temperature, pressure on separation efficiency was investigated. The calculation results are of significance for designing separation process for low boiling-point gas mixturevia hydrate technology, and can also lay a theoretical foundation for industrial application of this separation technique.