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Hawiyah Gas Plant New Thermal Oxidizer Combustion Control Philosophy

机译：Hawiyah Gas Plant New Thermal Oxidizer Combustion Control Philosophy

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Hawiyah Gas Plant at Saudi Aramco recently commissioned a thermal oxidizer. The thermal oxidizer unit has two main functions that shall be achieved. The first function is to oxidize and destroy the Acid gas which has minute quantities of BTX. The BTX shall be fully destroyed at a temperature above 1800 deg F. The second main function of the unit is to provide heating media for the hot water which is used in the re-boiler of the DGA stripper in sweet gas treating unit. The hot water temperature controller has a set point of 350 Deg F thus providing constant water temperatures to the gas treat process. Hawiyah gas plant will share through this paper the internal effort to rectify the original control philosophy design problems submitted by the equipment vendor of the thermal oxidizer that fail to accommodate both functions at the same time. The paper will shed the light on all of the new innovative major advance control loops configured to achieve the appropriate hot water temperature, combustion chamber temperature in addition to the Oxygen trimming advance control. The new control scheme helps the plant to achieve more reliable system to any process changes, it helps to maintain the targeted process parameters set points and optimize the fuel consumption. Hawiyah Gas Plant will present the actual reduced figures in the fuel consumption after the modification and shows the improved in the equipment reliability. In the first part of the paper, brief description of HGP process will be shown. And In this introduction, the role and function of the Gas Treating unit 6 and its thermal oxidizer units will be discussed. Thin there will brief disciption of the basic start up and firing scheme for the thermal oxidizer. After that, the paper will discuss the refractory dry out and the heat up requirements and how this is achieved by the logic.
机译：沙特阿美的Hawiyah天然气厂最近启用了一种热氧化剂。热氧化装置有两个主要功能需要实现。第一个功能是氧化和破坏含有微量BTX的酸性气体。BTX应在高于1800华氏度的温度下完全销毁。该装置的第二个主要功能是为用于脱硫装置DGA汽提塔再锅炉的热水提供加热介质。热水温度控制器的设定值为350华氏度，因此为气体处理过程提供恒定的水温。Hawiyah天然气厂将通过本文分享内部努力，以纠正热氧化剂设备供应商提交的原始控制原理设计问题，这些问题无法同时满足两种功能。本文将阐明所有新的创新性主要提前控制回路，这些回路除了氧气微调提前控制外，还可实现适当的热水温度、燃烧室温度。新的控制方案有助于工厂实现更可靠的系统，以应对任何工艺变化，有助于维持目标工艺参数设定值，优化燃料消耗。哈维耶天然气厂将提供改造后燃油消耗量的实际减少数字，并显示设备可靠性的提高。论文的第一部分将简要介绍HGP工艺。在这一引言中，将讨论气体处理单元6及其热氧化装置的作用和作用。这里将简要介绍热氧化剂的基本启动和点火方案。然后，本文将讨论耐火材料的干燥和加热要求，以及如何通过逻辑实现这一点。

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