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OPERATION ON PROCESS OFF-GAS OF A 24MW SGT-600 GAS TURBINE ON AN LNG PLANT IN CHINA

机译：在我国液化天然气局部液化天然气工厂的24MW SGT-600燃气轮机的过程中的运行

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A privately owned LNG plant was taken into service at the Tuha Oil Fields in western China during 2004. The plant is the first of its kind and will produce Liquefied Natural Gas (LNG) from associated gas from the oil fields. The LNG is delivered to Central China by trucks. The plant was delivered by Tractebel with Linde AG being responsible for the LNG process design. The compression set of the refrigeration cycle consists of a three-stage Ebara compressor driven by a 24 MW Siemens SGT-600 gas turbine operating on the off-gas from the LNG plant. The operation of the gas turbine integrated in this plant is associated with some special challenges: 1. the ambient conditions out in the desert. 2. the fuel, that varies from natural gas to a process gas consisting of methane diluted with up to 28% nitrogen 3. the refrigeration medium, which is circulated by the gas turbine driven compressor, changes in composition dependent on load 4. the starting procedure with the compressor in the refrigeration loop A combustion test was performed to verify that the DLE combustion system could accept the variations in gas composition. The control system was modified to handle the variable gas qualities in the fuel and in the refrigeration loop. Since the gas turbine/compressor set is an integrated part of the LNG process the commissioning was a long process governed by the LNG plant commissioning. It included some unexpected events. Now all is working well. It has been shown that a standard SGT-600 DLE unit can start and operate reliably and with low emissions on very much diluted natural gases. The paper contains a brief description of the LNG plant, definition of the special requirements on the gas turbine, a description of the combustion verification test on diluted gas, some events during commissioning and finally the engine verification test.
机译：2004年中国西部地区塔哈油田的私营液化天然气植物厂被进入了中国西部地区石油田。该工厂是第一家，并将生产来自油田的相关气体的液化天然气（LNG）。液化天然气通过卡车送到中国中部。该植物通过Tractebel递送，林德AG负责LNG工艺设计。制冷循环的压缩集包括由24 MW Siemens SGT-600燃气轮机驱动的三级EBara压缩机，该压缩机在来自LNG植物的废气中操作。燃气轮机的运行集成在该植物中与一些特殊挑战有关：1。在沙漠中的环境条件。 2.燃料，其从天然气变化到由稀释的甲烷组成的过程气体，其由高达28％氮气3.由燃气涡轮机驱动的压缩机循环的制冷介质，依赖于载荷4的组成变化。启动使用压缩机在制冷回路中进行燃烧试验以验证DLE燃烧系统是否可以接受气体组合物的变化。修改控制系统以处理燃料中的可变气体品质和制冷环。由于燃气轮机/压缩机套装是LNG工艺的综合部分，调试是由LNG工厂调试管辖的漫长过程。它包括一些意外事件。现在都在运作良好。已经表明，标准的SGT-600 DLE单元可以可靠地启动和操作，并且在非常稀释的天然气上具有低排放。本文含有简要说明，液化天然气厂，燃气轮机特殊要求的定义，对稀释气体的燃烧验证试验的描述，调试期间的一些事件，最后发动机验证测试。

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