有色设备

Within nonferrous metallurgical industrial parks, substantial amounts of high-temperature flue gas exist. To prevent atmospheric pollution, the waste heat from these flue gases is recovered to generate saturated steam, which is then sent to turbine power stations for energy utilization. The preheating of steam pipelines before steam delivery is termed as “pipeline warming”. Prior to turbine unit startup, the pipelines between the turbine inlet valve and main steam valve require warming. Traditional manual warming operations rely on operators' experience to manually adjust valves, resulting in heavy workloads, low efficiency, and potential operational errors. To ensure safe and systematic automated pipeline warming, the paper proposes an automatic solution: installing control valves, thermal resistors and pressure transmitters in steam pipelines. These components connect to the plants Distributed Control System (DCS) for data acquisition and automated control. The automation implementation can effectively enhance cold-start efficiency of turbine units, reduce manual operations, and protect steam pipelines from thermal stress damage.