关键词: 炼油厂, 凝结水, 分级利用, 控制逻辑, 水质, 连续运行周期, 利用率

Abstract:

Taking a certain refining and chemical company as the research object, the application status of condensate classification utilization is studied and analyzed. By establishing a condensate classification utilization model and combining it with online water quality monitoring, based on the historical data of condensate quality stored in the refinery LIMS(laboratory information management system) database, DCS(distributed control system) is used to achieve classification recovery of condensate. The study shows that the use of DCS reduces the amount of condensate replenished into the circulating water system, effectively eliminating “high water low use”. By evaluating the continuous operating cycle and utilization rate of condensate recovery, the operating cycle increases by 13.25%, and the periodic utilization rate increases by 20.3 percentage points. The condensate recovery effect is significant. The classification recovery model can effectively ensure the qualified quality of boiler water and steam while achieving efficient utilization of condensate. However, considering the impact of circulating water quality, the utilization rate of condensate cannot reach 100%.

Key words: refinery, condensate, classification utilization, control logic, water quality, continuous operating cycle, utilization rate