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    • 1. 发明公开
    • 응축을 이용하는 PFC 회수 방법
    • 使用冷凝法回收PFC的方法
    • KR1020010049629A
    • 2001-06-15
    • KR1020000035591
    • 2000-06-27
    • 프랙스에어 테크놀로지, 인코포레이티드
    • 켈리,리차드마틴보나퀴스트,단테패트릭
    • F25J3/08
    • B01D53/002B01D5/0054Y02C20/30Y02P70/34Y10S62/918
    • PURPOSE: A method for recovery of PFC using condensation is provided, which treats disposed gases from a small number of units and sorts a highly volatile PFC flow and PFC product. CONSTITUTION: The flow(10) made of a nitrogen carrier gas is treated to remove a non-PFC gas. The flow(10) is cooled in a heat exchanger(12) and guided into a condenser(18). A flow(40) is changed into the flow(14) at an inlet of a condenser(18) to increase a concentration of a CF(4) in a generated flow(16) and to lower its temperature. The flow(16) is cooled in the condenser(18) to form a carrier gas existing as a flow(22) and a flow(20) by condensing the PFC. The flow(2) is poured into a fractionating tower(38), and separated to form a flow(40) and a flow(42).
    • 目的:提供一种使用冷凝法回收PFC的方法,该方法用于处理来自少量装置的废气,并对高挥发性PFC流量和PFC产物进行分选。 构成:处理由氮气载气制成的流(10)以除去非PFC气体。 流(10)在热交换器(12)中冷却并被引导到冷凝器(18)中。 在冷凝器(18)的入口处将流(40)改变为流(14),以增加所产生的流(16)中的CF(4)的浓度并降低其温度。 流动(16)在冷凝器(18)中被冷却,以形成通过冷凝PFC流动(22)和流动(20)而存在的载气。 将流(2)倒入分馏塔(38)中,并分离以形成流(40)和流(42)。