Rambo, Boilers and their feedwater systems are a bit complicated. One wants to never waste any of the heat invested in heating the water to make steam, and none of the precious condensate that is usually pure water. In a lubricated steam hammer the rather large amount of oil entrained in the steam ends up in the condensate, and is hard to clean enough to use as feedwater. Any oil at all and you start to get foaming in the boiler, which is not good. I mentioned the silencer previously, and its main goal was to silence the roar of the exhaust steam as it reached the atmosphere. It did have a recovery drain, but the recovered condensate would be quite oily. I do not think this steam was reused at the drop hammer shop I worked at in recollection.The CI Agent may work, but only testing will tell. There will be heat still in the condensate, and it can and should be used to preheat feed water.
Condensate return systems often used on heating systems return pure water to the condensate return tank. This tank will be vented, and even if the condensate is pure liquid there will usually be flashing to steam as the slight pressure in the condensate return line is lost as the condensate enters the tank. This water is pure gold. deaireated, hot to almost boiling and no impurities. Makes excellent feedwater. One must have the tank elevated by at least a meter or so above the feedwater pump suction ports to prevent the water again flashing to steam in the small suction negative head. If the steam flashes in the pump it will cavitate, and quickly wreck the pump. Cavatation will often make a gravel crushing or nest of bees buzz.
Try searching the net for a copy of the Boiler operators manual by the ASME. It will have a great deal of info.