PROBLEM TO BE SOLVED: To simply and promptly clean a line for sterilization treatment of a product liquid.SOLUTION: A sterilization processing line comprises: an upstream tank 16 and a downstream tank 17 that each retain a product liquid and are connected with each other by a duct 18 that transfers the product liquid a high-temperature heating unit 21 that sterilizes the product liquid and is provided at an intermediate section of the duct one or more stages of heating units 22, 23 that heat the product liquid in stages and are provided at the duct extending from the upstream tank to the high-temperature heating unit and one or more stages of cooling units 24, 25, 26 that cool the product liquid in stages and are provided at the duct extending from the high-temperature processing unit to the downstream tank. A plurality of parallel intermediate duct systems P, Q are provided between the heating unit 23 at the stage that is in a temperature range at which burning of the product liquid can occur and the cooling unit 24 at the stage that similarly is in the temperature range at which burning of the product liquid can occur, and the sterilization processing and the CIP and positive pressure holding processing of the product liquid transferred from the upstream tank to the downstream tank are performed switching between the parallel plurality of intermediate duct systems.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】製品液を殺菌処理するラインの浄化を簡易かつ迅速に行う。【解決手段】製品液を各々貯留する上流側タンク16と下流側タンク17との間が製品液を移送する導管18で接続され、導管の中間部に製品液を殺菌する高温加熱部21が設けられ、上流側タンクから高温加熱部へと至る導管に製品液を段階的に加熱する加熱部22,23が一段又は複数段設けられ、高温加熱部から下流側タンクへと至る導管に製品液を段階的に冷却する冷却部24,25,26が一段又は複数段設けられてなる殺菌処理ラインについて、製品液に焦付きを生じ得る温度範囲内にある段の加熱部23から同じく製品液に焦付きを生じ得る温度範囲内にある段の冷却部24に至る間の中間配管系P,Qを複数本並列して設け、上流側タンクから下流側タンクへ移送される製品液に対する殺菌処理と、CIP及び陽圧保持処理とを、並列する複数本の中間配管系間で切り換えて行う。【選択図】図1
