deaerator of a boiler room, thermal station principe of work

background boiler coil construction design engineering equipment exchange factory fuel gas group heat heavy hot icon industrial installation iron isolated line machine maintenance manufacturing metallic pipe pipeline power preheater pressure processing refinery refrigeration reheater repair shell socket steam steel system technical technology temperature tube water work deaerator room thermal station principe captions open feedwater heater boiler technological schematic diagram deaerator seal deaeration column tank vapor cooler