Liquefied petroleum gas (LPG) becomes popular in the twentieth century as source of energy, since it is economically feasible to be produced, transported, sold and stored as a liquid fuel. LPG in Egypt is considered one of the most important domestic fuels. Egypt imports half of its LPG fuel demand. Many researches have been developed to increase the production of LPG in Egypt by increasing the productivity of the refineries. The objective of this study is to investigate the possibility of adding other relatively volatile hydrocarbons as ethane, n-pentane and pentanes’ isomers (iso-pentane and neo-pentane) and/or utilizing relatively volatile oxi-hydrocarbons [mainly dimethyl ether (DME) or dimethyl propane (DMP)] to increase LPG production without affecting its specifications, in order to reduce the import gap of LPG in Egypt. The new LPG mixture is adjusted to meet the Egyptian specifications of LPG (2020). Due to ethane critical properties, it is recommended not to add ethane to LPG since the behavior of ethane cannot be predicted at 50 °C and will be separated inside the LPG bottle. In addition, it will necessitate the increase in LPG butane content. In summer, it is recommended to add i-C5 or 2,2DMP or a mixture of both to LPG (depending on the cost). In winter, it is recommended to add 2,2DMP or a mixture of 2,2DMP with i-C5 to LPG (depending on the cost). Adding DME to LPG with any percentage will decrease the heating value below the Egyptian heating value specifications (2020). Adding neo-pentane to LPG is more preferable than DME, since the heating value of neo-pentane is higher than that of DME. Also, the production cost of the neo-pentane is lower than that of DME.

液化石油气（LPG）作为能源在20世纪变得很流行，因为它在经济上可以作为液体燃料进行生产，运输，销售和存储。埃及的液化石油气被认为是最重要的国内燃料之一。埃及进口了LPG燃料需求的一半。通过提高炼油厂的生产率，已经进行了许多研究来增加埃及的液化石油气产量。这项研究的目的是探讨加入其他相对挥发性碳氢化合物如乙烷的可能性，ñ-戊烷和戊烷的异构体（异戊烷和新戊烷）和/或利用挥发性较高的氧化碳氢化合物[主要是二甲醚（DME）或二甲基丙烷（DMP）]来提高LPG的产量而不影响其规格，以便减少埃及液化石油气的进口缺口。调整了新的液化石油气混合物，以符合埃及的液化石油气规范（2020年）。由于乙烷的关键特性，建议不要在LPG中添加乙烷，因为在50°C时无法预测乙烷的行为，乙烷的行为会在LPG瓶内分离。另外，将有必要增加LPG丁烷含量。在夏季，建议在LPG中添加i-C5或2,2DMP或两者的混合物（取决于成本）。在冬季，建议向LPG添加2,2DMP或2,2DMP与i-C5的混合物（取决于成本）。在LPG中以任何百分比添加DME将使发热量降低到埃及发热量值规格（2020）以下。LPG中添加新戊烷比DME更优选，因为新戊烷的热值高于DME。而且，新戊烷的生产成本低于DME。