一氧化碳装置低负荷运行瓶颈及工况优化

Bottleneck and Optimization of Low Load Operation of CO Unit

针对一氧化碳装置工艺反应机理及装置运行现状,明确了在低负荷工况下装置存在的主要瓶颈是冷箱的冷量不平均、精馏塔控制困难、低温主换热器偏流冻堵等。通过对转化炉参数的优化、冷箱结构的调整、燃料系统的优化、TSA切床工序的优化、透平压缩机节能降耗等措施,有效提升了装置在低负荷运行时的平稳性,解决了工艺技术难题,减少了能耗物耗,为装置的经济运行提供了可靠的保证。

According to the process reaction mechanism and operation status of the carbon monoxide(CO)plant,its main bottleneck during the operation at low-load condition is identified as the uneven cooling capacity of the cold box,the difficult control of the distillation tower,and the frozen and blocked bias flow in the main heat exchanger.The improvement measures of improving conversion furnace parameters,cold box structure adjustment,optimizing the fuel system and the TSA cutting process,and the energy saving and consumption reduction for the turbine compressor,have effectively improved the running stability for the CO unit at low-load condition,solved the process problems,reduced the energy and material consumptions,which can provide reliable guarantee for economic operation of the CO unit.