Abstract: A method produces a polyamide having an extractable fraction of oligomer of from 2 to 10 percent. The method includes introducing a monomer into a reactor and polymerizing the monomer to form a first intermediate having an extractable fraction of oligomer of greater than 10 percent, wherein the oligomer is a compound of 2 to 20 units of the monomer. The method includes transferring the first intermediate from the reactor into an extractor and introducing water into the extractor to form a second intermediate having an extractable fraction of oligomer that is less than the extractable fraction of the first intermediate, wherein the water is introduced at a temperature of less than 100° C. and wherein the water includes 0.1 to 3.0 weight percent of a plasticizer. Moreover, the method includes transferring the second intermediate into a dryer and applying air at a temperature of less than 125° C.

Abstract: Disclosed is an apparatus for removing emissions, originated in the manufacturing industry, especially from polymerization operations and thermoplastic polymer processing operations which has a duct system for collecting the air, containing emissions, with an entrance and an exit, a first heat exchanger, which is connected to the entrance of the duct system, a liquid removal system which is connected to the first heat exchanger, a second heat exchanger, which is connected to the liquid removal system and a fan which is connected to the second heat exchanger and the exit of the duct system.

Abstract: Disclosed is an apparatus for removing emissions, originated in the manufacturing industry, especially from polymerization operations and thermoplastic polymer processing operations which has a plurality of ducts, an entrance for collecting air, containing the emissions and an exit for exiting exhaust air, a first heat exchanger which has a hot side with an entrance and an exit and a cold side with an entrance and an exit, a second heat exchanger, which has a hot side with an entrance and an exit and a cold side, a liquid removal system, and a fan, whereby the first heat exchanger is connected with the entrance of the hot side to the entrance of the duct system and with the exit of the hot side to the entrance of the hot side of the second heat exchanger by a duct; the exit of the hot side of the second heat exchanger is connected to the entrance of the cool side of the first heat exchanger by a duct; the precipitator is connected to the exit of the cool side of the first heat exchanger by a duct and to the f

Abstract: Disclosed is a process for removing emissions, originated in the manufacturing industry, especially from polymerization operations and thermoplastic polymer processing operations which includes collecting the air, containing the emissions, directing the air, containing the emissions through a first heat exchanger thereby cooling the air, directing the air, exiting the first heat exchanger, through a second heat exchanger, thereby cooling the air, directing the air exiting the second heat exchanger to a liquid removal system and directing the air, exiting the liquid removal system through the first heat exchanger, thereby heating the air.

Abstract: Disclosed is a process for removing emissions, originated in the manufacturing industry, especially from polymerization operations and thermoplastic polymer processing operations by collecting the air, containing the emissions, cooling the air, directing the air to a liquid removal system and heating the air.