This research aims to develop a mathematical model to construct a network model for producing hydrogen by integrated utility and biogas supply networks (IUBSNs). In this model, a utility supply network exists in a huge petrochemical industry while a biogas supply network consists of a wastewater treatment plant and anaerobic digestion. Pipelines connect the utility and biogas supply networks. The steam reforming process, which is the most well-known process able to generate large amounts of hydrogen, is employed to harness hydrogen as well as to integrate the two networks. In IUBSNs, the needed steam is obtained by optimizing a utility supply network while methane-rich biogas is generated by placing anaerobic digestion tanks into a number of wastewater treatment plants allocated by region. This study uses an algorithm for solving the mixed-integer linear programming problems to minimize the total annual costs of IUBSNs and simultaneously satisfy hydrogen demand. IUBSNs can be a great alternative to a hydrogen supply network that imports and consumes fossil fuels to produce hydrogen, furthermore, it is able to positively influence environmental issues through the reduction of the amount of fossil fuel used in petrochemical industries. A case study of the Republic of Korea illustrates the feasibility of the proposed model. Three cases (base case, only optimized utility supply networks, and IUBSNs) are conducted, and an increase in hydrogen demand is applied to each case. The results demonstrate that IUBSNs construction decreases the total costs by about 13% compared to the existing situation, and as hydrogen demand increases, the gas pipeline structure in IUBSNs employs a hub city to transport biogas flexibly.

这项研究旨在开发数学模型，以构建通过综合公用事业和沼气供应网络（IUBSN）生产氢气的网络模型。在此模型中，大型石化行业中存在公用事业供应网络，而沼气供应网络则由废水处理厂和厌氧消化组成。管道连接公用事业和沼气供应网络。蒸汽重整过程是最著名的能够产生大量氢气的过程，可用于利用氢气以及整合两个网络。在IUBSN中，所需的蒸汽是通过优化公用事业供应网络获得的，而富甲烷的沼气是通过将厌氧消化池放入按地区分配的许多废水处理厂中而产生的。这项研究使用一种算法来解决混合整数线性规划问题，以最小化IUBSN的年度总成本并同时满足氢气需求。IUBSN可以替代进口和消耗化石燃料以生产氢气的氢供应网络，此外，它还可以通过减少石化行业中使用的化石燃料的量来对环境问题产生积极影响。大韩民国的一个案例研究说明了该模型的可行性。进行了三种情况（基本情况，仅优化的公用事业供应网络和IUBSN），并且每种情况都会增加氢气需求。结果表明，与现有情况相比，IUBSN的建造将总成本降低了约13％，并且随着氢气需求的增加，