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2016年初,洛阳分公司二催化装置除氧器运行工况发生变化。受节能降耗要求,装置先后将主风机组和气压机组润滑油系统汽轮泵的出口乏汽并入除氧器内,将全厂的凝结水并入除盐水管网,使进入除氧器内的除盐水温度、压力波动较大。乏汽回收装置主要为回收除氧器顶的乏汽,当除氧器运行产生波动时,还可以起到平稳除氧器热量平衡和缓冲除氧器压力的作用,其补水的连续性、平稳性尤为重要。针对新工况下除氧器的操作,建议乏汽回收装置增上一台备用机泵;增加乏汽回收装置的除盐水压力远传装置;短期内可汽轮泵、辅助油泵同时运行,长期并不可行,建议只运行汽轮泵;制定因除氧器压力波动造成主风机和气压机汽轮泵出口憋压,导致机组润滑油系统压力波动,进而引发更大生产事故的应急预案;为保证操作的稳定性,与除氧器相关的各调节阀只能小幅调节,发生波动时要求做到及时分析原因并进行调整,保证除氧器平稳运行。
In early 2016, Luoyang Branch two catalytic device deaerator operating conditions change. By energy saving requirements, the device will have the main fan unit and the air compressor unit steam turbine export steam turbine exhaust into the deaerator, the entire plant condensate into the demineralized water pipe network, so into the deaerator Within the demineralized water temperature, pressure fluctuations. Spent steam recovery unit is mainly for the recovery of deaerator top of the lack of steam, when the deaerator operation fluctuations, but also can play a smooth deaerator thermal balance and buffer deaerator pressure effect, the continuity of its water supply, stable Sex is especially important. In view of the operation of the deaerator under the new operating conditions, it is suggested that a spare pump be added to the spent steam recovery unit, the remote desalination water pressure-increasing unit for the spent steam recovery unit should be added, the turbo pump and the auxiliary oil pump can be operated simultaneously in the short term, It is not feasible, it is recommended to run only the steam turbine pump; Deaerator caused by pressure fluctuations caused by the main fan and air compressor steam pump outlet pressure, resulting in pressure fluctuations in the unit lubricating oil system, thereby triggering a larger production accident emergency plan; To ensure the stability of the operation, and the control valve associated with the deaerator can only be adjusted slightly, when the fluctuations require timely analysis of causes and make adjustments to ensure smooth operation of the deaerator.