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化工学报  2015 

非平衡级法气体混合物吸收-水合双塔分离单元的模拟计算

DOI: 10.11949/j.issn.0438-1157.20141195, PP. 1748-1759

Keywords: 气体水合物,油水乳液,吸收-水合,分离塔

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Abstract:

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。

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