成品油管网双罐区中转油库油罐收发油计划编制

双罐区的成品油管网中转油库在油罐收发油作业时,既要满足管网运行要求,又要满足罐区与油罐作业工艺流程的复杂要求,导致油罐收发油作业计划难度较大。针对给定的成品油管网批次计划,提出了一种编制双罐区中转油库油罐收、发油计划的时序递推法:通过引入罐容上限、罐容下限、油罐作业连续性、罐区作业连续性、油品沉降时间等经验规则,对罐区与油罐划分优先级,在每个时段均可选择出最合适的油罐来进行收、发油作业,确定整个计划期内任意时刻中转油库各油罐的状态(收油、发油或静置)和收油/发油流量。将该方法应用于某成品油管网的一个双罐区中转油库,验证了方法的可行性与实用性。基于该方法开发的计算机软件可以作为成品油管网双罐区中转油库油罐收、发油计划编制的有效工具。

Loading and unloading scheduling of oil tanks in a transfer hub with two tank farms of a products pipeline network

The loading/unloading operation at oil tanks in the transfer hub with two tank farms of a products pipeline network shall not only meet the operation requirements of the pipeline network, but also satisfy the complex limitations on the operating processes of tank farms and tanks, so its plan preparation is difficult. In this paper, the sequential recursive method for preparing the loading/unloading plan of oil tanks in the transfer hub with two tank farms was developed for the given batch schedule of a products pipeline network. In this method, the priority of tanks and tank farms is set by introducing the empirical rules on maximum tank capacity, minimum tank capacity, operating continuity of tank, operating continuity of tank farm and settling time of oil products. In this way, the most suitable oil tanks for loading/unloading operation in each time interval can be selected, and the state (loading, unloading and standing) and loading/unloading rate of each oil tank in the transfer hub at any moment in the entire plan period can be determined. Then, this method was applied to a transfer hub with two tank farms of one certain products pipeline network, and it is verified to be feasible and practical. The computer software developed on the basis of this method can be used as an effective tool for preparing the loading/unloading plan of oil tanks in a transfer hub with two tank farms of a products pipeline network.