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    • 5. 发明申请
    • SINGLE GAS PURIFIER VESSEL AND HEAT EXCHANGER
    • 单气净化器和热交换器
    • WO1997003745A1
    • 1997-02-06
    • PCT/US1996012131
    • 1996-07-19
    • ULTRAPURE SYSTEMS, INC.
    • ULTRAPURE SYSTEMS, INC.CARREA, GiovanniWARRICK, Brian, D.
    • B01D53/04
    • C01B21/0483B01D53/02C01B21/0494C01B23/0084C01B23/0094
    • A method and an apparatus for removing impurities from a noble gas or nitrogen uses a single purifier vessel (16) having three different temperature zones (30, 34, 38). In first zone (30), the gas is preheated to a temperature greater than 200 DEG C; in second zone (34), the preheated gas is contacted with a getter material at a temperature greater than 335 DEG C for removal of impurities such as methane and other hydrocarbons, water, carbon monoxide, nitrogen, oxygen, and carbon dioxide; and, in third zone (38), the gas is contacted with a second getter material at a temperature greater than 150 DEG C for removal of hydrogen. Hot gas exiting purifier vessel (16) is passed through recuperative heat exchanger (14) where the hot exiting gas preheats in-coming gas before it enters first zone (30) of purifier vessel (16).
    • 用于从惰性气体或氮气中除去杂质的方法和装置使用具有三个不同温度区域(30,34,38)的单个净化器容器(16)。 在第一区(30)中,将气体预热至大于200℃的温度; 在第二区域(34)中,预热的气体在大于335℃的温度下与吸气剂材料接触,以除去诸如甲烷和其它烃,水,一氧化碳,氮气,氧气和二氧化碳的杂质; 并且在第三区域(38)中,气体在大于150℃的温度下与第二吸气剂材料接触以除去氢气。 离开净化器容器(16)的热气通过再热换热器(14),其中热出口气体在其进入净化器容器(16)的第一区域(30)之前预热入口气体。
    • 7. 发明申请
    • APPARATUS TO PROVIDE OXYGEN-FREE GAS
    • 提供无氧气体的设备
    • WO1990004268A1
    • 1990-04-19
    • PCT/GB1989001203
    • 1989-10-12
    • THE SECRETARY OF STATE FOR DEFENCE IN HER ...SIMMONDS, Peter
    • THE SECRETARY OF STATE FOR DEFENCE IN HER ...
    • H01M12/06
    • C01B21/0494C01B2210/0006C01B2210/0014C01B2210/0045G01N33/0014H01M12/065
    • A nitrogen gas source, suitable as a field source, comprises a metal air battery having an inlet and outlet to allow a flow of air to pass over its porous cathode. Operation of the battery causes the cathode to remove the oxygen, leaving an oxygen-free gas supply. The output gas may then pass through a chemical filter containing charcoal or molecular sieves to further purify the nitrogen gas. The source is particularly suited for use with an electron capture detector for monitoring tracer substances in air when the cathode is coated with a small amount of stationary phase material of the type used in gas chromatography to minimise absorption of the tracers. The battery is constructed from two identical air cathodes (1) and a single sheet of super purity (99.99 %) aluminium (2) which acts as the positive electrode. Each air cathode (1) is a conducting nickel screen which has a layer of active carbon (3) coated on one side which is exposed to electrolyte. The other side of the cathode is coated with a layer (4) of water-impermeable, gas-porous plastics material and is exposed to a flow of air during operation of the battery. Each air cathode (1) is attached to a plastics sheet (5) using a double-sided adhesive tape (6) which has previously been cut into a grid pattern so as to define an air channel (7). Holes (11) are drilled in each external face of the plastics sheets, interconnecting with the air channels on both sides of the cathode, and fitted with gas inlet (12) and outlet (13) pipes. Air is introduced by means of a small pump.
    • 适合作为场源的氮气源包括具有允许空气流过其多孔阴极的入口和出口的金属空气电池。 电池的操作导致阴极去除氧气,留下无氧气体。 然后,输出气体可以通过含有炭或分子筛的化学过滤器,以进一步净化氮气。 该源特别适用于电子捕获检测器,用于在阴极涂覆少量用于气相色谱法的类型的固定相材料时,用于监测空气中的示踪物质,以尽量减少示踪剂的吸收。 电池由两个相同的空气阴极(1)和一个充当正极的超纯度(99.99%)铝(2)构成。 每个空气阴极(1)是导电镍屏幕,其具有在暴露于电解质的一侧上涂覆的活性炭层(3)。 阴极的另一侧涂覆有不透水的气体多孔塑料材料的层(4),并且在电池操作期间暴露于空气流中。 使用预先切割成网格图案的双面胶带(6)将每个空气阴极(1)附接到塑料片(5),以限定空气通道(7)。 在塑料片的每个外表面上钻孔(11),与阴极两侧的空气通道相互连接,并配有气体入口(12)和出口(13)管。 通过小型泵引入空气。