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首页> 外文会议>National Industrial Energy Technology Conference; 20040420-23; Houston,Texas(US) >OVERCOMING FUEL GAS CONTAINMENT LIMITATIONS TO ENERGY IMPROVEMENT
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OVERCOMING FUEL GAS CONTAINMENT LIMITATIONS TO ENERGY IMPROVEMENT

机译：克服能源使用中的汽油限制

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摘要

Oil refineries convert crude oil into high value products such as gasoline, diesel, liquefied petroleum gas (LPG), and petrochemical feedstocks. After squeezing as much saleable product from the crude oil as possible, there remains a light gas stream, typically known as refinery fuel gas (RFG), which is too light for any of the high value products. The RFG (predominantly made up of a mixture of hydrogen, methane and ethane) is recycled back into the plant and used as fuel to fire the process heaters. A typical plant does not make enough RFG to supply all of its heaters and therefore is required to purchase make-up natural gas from a third party supplier. This purchased gas is typically injected directly into the RFG manifold or mix drum and represents what refiners call their "fuel gas cushion." As energy prices continue to increase, refiners are placing more and more emphasis on energy optimization within their plants. Common areas for energy improvement are fired heater efficiency improvement, improved process heat integration, and steam and power optimization. Assuming the amount of produced RFG remains constant, the energy savings from these projects are realized in the reduction of purchased natural gas, or the fuel gas cushion. In practice, many refineries are unable to achieve 1st Quartile Solomon energy performance due to an already low fuel gas cushion. This is often the result of inefficient operations, such as poor recovery of hydrogen and/or C3+ molecules out of RFG streams. This paper will address a proven approach to improving energy performance by 10-20%, including a methodology for quantifying fuel gas over-supply and mitigating the imbalance such that the fuel gas cushion is increased, allowing room for maximum economic energy optimization.
机译：炼油厂将原油转化为高价值产品，例如汽油，柴油，液化石油气（LPG）和石化原料。从原油中榨出尽可能多的可销售产品后，仍然存在轻质气流，通常被称为炼厂燃料气（RFG），对于任何高价值产品而言，这种气体都太轻了。 RFG（主要由氢，甲烷和乙烷的混合物组成）被循环回工厂，并用作燃烧过程加热器的燃料。典型的工厂无法提供足够的RFG来供应所有加热器，因此需要从第三方供应商处购买补充天然气。购买的气体通常直接注入RFG歧管或混合鼓中，代表精炼厂称之为“燃料气垫”的气体。随着能源价格的不断上涨，炼油厂越来越重视工厂内的能源优化。能源改善的常见领域是燃烧加热器效率的改善，过程热集成的改善以及蒸汽和功率的优化。假设生产的RFG数量保持恒定，则通过减少购买的天然气或燃料气垫可实现这些项目的节能。实际上，由于已经很低的燃料气垫，许多炼油厂无法达到所罗门第一四分之一的能源性能。这通常是操作效率低下的结果，例如从RFG流中回收氢和/或C3 +分子的能力很差。本文将探讨一种行之有效的方法，以将能源性能提高10-20％，其中包括量化燃料气体供过于求和减轻不平衡的方法，从而增加燃料气体缓冲，从而为最大的经济能源优化提供空间。

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