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    • 5. 发明申请
    • A PLANT AND METHOD FOR RECOVERING SULPHUR HEXAFLUORIDE FOR REUSE
    • 一种用于回收硫化氢的工厂和方法用于再利用
    • WO2012142672A1
    • 2012-10-26
    • PCT/AU2012/000417
    • 2012-04-20
    • ABB TECHNOLOGY LTDABB AUSTRALIA PTY LIMITEDSMITH, Peter, AndrewROBY, David, AlanROBBIE, Duncan Gwai YeeALEXANDER, BrettDAVIES, Wayne, Alexander
    • SMITH, Peter, AndrewROBY, David, AlanROBBIE, Duncan Gwai YeeALEXANDER, BrettDAVIES, Wayne, Alexander
    • F25J3/00B01D53/48C01B17/45
    • B01D53/002B01D2257/204B01D2257/30C01B17/453Y02P20/151
    • Recovery of re-useable grade sulphur hexafluoride from a contaminated source comprises first evacuating a stream of contaminated sulphur hexafluoride from a transport or storage vessel (10) into a separation via an intermediary and optional clean-up stage, involving scrubbing and filtering. Sulphur hexafluoride in the partially clean-up stream is directly solidified within the separation vessel (30), preferably onto a large surface area tube heat exchanger (4) arranged within the separation vessel (30). Uncondensed contaminant gases are vented to atmosphere, and the solidified sulphur hexafluoride within the separator vessel is melted and transferred to a collection vessel (5) for subsequent reuse. The recovery process re-introduces sulphur hexafluoride obtained from the collection vessel (50) back into the separation vessel (30) for effecting heat transfer to the solidified sulphur hexafluoride thereby to assist in said melting. A valve assembly (53) is provided between the collection vessel (50) and separator vessel (30), which is controlled to allow warm, substantially uncontaminated and previously cleaned sulphur hexafluoride gas to be transferred from the collection vessel (50) to the separator vessel (30) to melt the solidified sulphur hexafluoride. The valve assembly (53) allows the melted sulphur hexafluoride to be transferred to the collection vessel (50) in liquid or gas phase.
    • 从污染源回收可再利用级六硫化硫包括先将污染的六氟化硫流从运输或储存容器(10)排出到通过中间和任选的清理阶段进行分离,包括洗涤和过滤。 部分净化物流中的六氟化硫在分离容器(30)内直接固化,优选在布置在分离容器(30)内的大表面积管热交换器(4)上固化。 将未冷凝的污染气体排放到大气中,并且分离器容器内的固化的六氟化硫被熔化并转移到收集容器(5)中以供后续再利用。 回收过程将从收集容器(50)获得的六氟化硫重新引入分离容器(30)中,以进行固化的六氟化硫的热传递,从而有助于所述熔融。 阀组件(53)设置在收集容器(50)和分离器容器(30)之间,其被控制以允许温暖,基本上未被污染并预先清洁的六氟化硫气体从收集容器(50)转移到分离器 容器(30)熔化固化的六氟化硫。 阀组件(53)允许熔融的六氟化硫以液相或气相转移到收集容器(50)。