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中文摘要：
针对炼油厂H2网络系统的集成优化，考虑废氢流股的净化回用。净化装置不仅包括变压吸附、膜分离，还引入了脱硫单元。建立了相应的状态空间超结构，依据工程经验将超结构进行化简后，建立以最小年度费用为目标，综合考虑H2流量、体积分数，杂质体积分数和压力匹配限制的混整型线性规划。考察了2种规模的改造优化。实例计算表明了该方法的有效性。
英文摘要：
A mixed integer nonlinear programming model for the retrofit design of H2 network was proposed, which took the H2 mass fraction, impurity mass fraction and pressure constraints into consideration. By introducing a desulfurization block into the state-space superstructure, the H2S removal unit was incorporated with the H2 removal unit, such as pressure swing adsorption and membrane process, in the proposed model. The superstructure was reduced based on engineering experience. Total annual cost （TAC） was employed as the optimizing object to achieve the cost optimal network. Two scales of retrofit scenarios were investigated. Case study illustrated the applicability and efficiency of the proposed approach.
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