“Create a steam circuit turbo alternator diagram for a paper mill: condensate return through a deaerator, boiler feed pump, economizer, package boiler, and 40 bar 400 C superheater to a backpressure steam turbine that drives an alternator to an 11 kV plant bus and supplies a 4 bar process steam header for paper dryer cylinders.”
看懂背後的決策。
Turbine exhaust is delivered at 4 bar for useful process heat.
The boiler supplies superheated steam at 40 bar and 400 C.
A generator breaker connects the alternator to the 11 kV plant bus.
Dryer condensate returns to the feedwater preparation train.
Use this for industrial cogeneration sites with a continuous steam demand, such as paper, food, or chemical plants. It is not a condensing power-only turbine arrangement.
常見問題
Why use a backpressure turbine?
It produces power while delivering turbine exhaust at a pressure useful to the process.
What does the economizer do?
It recovers flue-gas heat to preheat feedwater before the boiler.
Why include a generator breaker?
It provides a controlled electrical connection and isolation point to the plant bus.