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公开(公告)号：US06183537B2
公开(公告)日：2001-02-06
申请号：US08963803
申请日：1997-11-04
IPC分类号： B01D53047
CPC分类号： B01D53/0476 , B01D53/0446 , B01D2259/40007 , B01D2259/40064
摘要： The invention comprises a pressure swing adsorption process for the separation of a less adsorbable component from a mixture comprising the less adsorbable component and a more adsorbable component, the process comprising a cyclic adsorption/desorption process wherein the desorption step is at a selected pressure and occurs for a selected time such that a pressure reducing apparatus utilized to evacuate the gas does not require extraneous cooling.
摘要翻译： 本发明包括一种变压吸附方法，用于从包含较难吸附组分和较易吸附组分的混合物中分离出较不易吸附的组分，该方法包括循环吸附/解吸过程，其中解吸步骤处于选定压力并发生 在选定的时间内，使得用于排出气体的减压装置不需要外部冷却。
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公开(公告)号：US6010555A
公开(公告)日：2000-01-04
申请号：US964293
申请日：1997-11-04
IPC分类号： B01D53/04 , B01D53/047 , B01D53/053
CPC分类号： B01D53/0476 , B01D2256/12 , B01D2259/40075 , B01D2259/402 , B01D2259/4533 , B01D53/0431 , B01D53/0446
摘要： A vacuum pressure swing adsorbent (VPSA) system and method for separating a component from a fluid mixture and including a fluid source for introducing the mixture into the system and a supply apparatus for collecting the separated component. A pair of adsorbent bed vessels is interposed between the fluid source and the supply apparatus to adsorb and desorb a predetermined component under respective adsorption and desorption pressures characterized by a low pressure ratio and relatively high desorption pressure values. Implementation of a single-stage vacuum device made possible by the use of the high desorption pressure, results in further reduction in both equipment and operating costs.
摘要翻译： 一种真空变压吸附剂（VPSA）系统和方法，用于从流体混合物中分离组分并且包括用于将混合物引入系统的流体源和用于收集分离的组分的供应装置。 在流体源和供给装置之间插入一对吸附剂床容器，以在低压比和相对高的解吸压力值为特征的相应的吸附和解吸压力下吸附和解吸预定的组分。 通过使用高解吸压力实现单级真空装置的实现，进一步降低了设备和运行成本。
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3.发明授权
公开(公告)号：US5658371A
公开(公告)日：1997-08-19
申请号：US554175
申请日：1995-11-06
IPC分类号： B01D53/04 , B01D53/053 , C01B13/02
CPC分类号： B01D53/0476 , B01D53/053 , B01D2256/12 , B01D2259/40052 , B01D2259/40079 , B01D2259/401 , B01D53/0446
摘要： A pressure swing adsorption process for the recovery of oxygen from air improves upon a prior art process by depressurizing the adsorbent bed within an adsorbent vessel to an intermediate pressure by releasing void space gas from the product end of the vessel to a low purity oxygen tank while concurrently evacuating the adsorbent vessel from the feed end. This action enables an increased speed of depressurization and a reduction of the cycle time. Further, the adsorbent bed is repressurized to an intermediate pressure from the product outlet end with gas from the low purity oxygen tank, while concurrently pressurizing the adsorbent vessel from the input feed end. This action increases the load time fraction for a feed/vacuum blower. Further, oxygen is introduced to the product end of the adsorbent bed vessel from a high purity oxygen tank (which provides product to downstream applications) while concurrently, air is introduced to the feed end of the adsorbent bed within the vessel. This enables an increased speed of increase in pressure in the bed from the intermediate desorption pressure. Next, a reduction in pressure ratio during the cycle elevates the pressure within the desorption vessel to approximately 7 psia, thereby reducing the evacuation requirements placed on the feed/vacuum blower. The above actions enable achievement of efficiency improvements on the order of 10%.
摘要翻译： 通过从现有技术的方法回收氧气的变压吸附方法通过将吸附剂容器内的吸附剂床减压到中间压力，通过从容器的产品端释放出空隙气体到低纯度的氧气罐，同时 同时从吸入端排出吸附剂容器。 该动作能够提高减压速度和减少循环时间。 此外，吸附床用来自低纯度氧气罐的气体从产品出口端再加压到中间压力，同时从输入进料端加压吸附剂容器。 该作用增加了进料/真空鼓风机的载荷时间分数。 此外，氧气从高纯度氧气罐（其向下游应用提供产品）引入吸附床容器的产品端，同时空气被引入到容器内的吸附剂床的进料端。 这使得能够从中间解吸压力提高床中压力的增加速度。 接下来，循环期间的压力比的降低将解吸容器内的压力提高到约7psia，从而降低了对进料/真空鼓风机的排气要求。 上述措施可以实现10％的效率提升。
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公开(公告)号：US5759242A
公开(公告)日：1998-06-02
申请号：US681550
申请日：1996-07-23
申请人： James Smolarek , Frederick Wells Leavitt , Jeffert John Nowobilski , Victor Emmanuel Bergsten , John Harry Fassbaugh
发明人： James Smolarek , Frederick Wells Leavitt , Jeffert John Nowobilski , Victor Emmanuel Bergsten , John Harry Fassbaugh
IPC分类号： B01D53/04 , B01D53/047 , B01J8/02
CPC分类号： B01D53/0476 , B01D53/0431 , B01D53/0446 , B01J8/0214
摘要： A vessel for use in a pressure swing adsorption gas separation process includes an enclosing wall which defines an enclosed space having a top region and a bottom region. An annular adsorbent bed is positioned within the enclosed space and has a porous outer wall, a porous inner wall and adsorbent material positioned between the walls. The porous outer wall is separated from the enclosing wall to create a gas feed channel therebetween, and the porous inner wall surrounds an inner tank whose wall surface is separated from the porous inner wall and creates a product flow channel therebetween. A gas feed/distribution baffle structure is positioned in the bottom region of the vessel and in fluid communication with the gas feed channel to provide a gas feed thereto. The gas feed enters the gas feed channel and the adsorbent bed via the porous outer wall and in a direction generally radially towards the inner porous wall and product flow channel. A product outlet is positioned in the bottom region and in fluid communication with the product flow channel, for collecting product gas passing thereinto via the porous inner wall from the adsorbent bed. A flexible membrane extends between the porous outer wall and the porous inner wall, at the upper extremities thereof, and is pressurized so as to bear upon the upper surface of the adsorbent material to prevent fluidization during gas flow.
摘要翻译： 用于变压吸附气体分离方法的容器包括封闭壁，其限定具有顶部区域和底部区域的封闭空间。 环形吸附剂床位于封闭空间内并具有多孔的外壁，多孔内壁和位于壁之间的吸附剂材料。 多孔外壁与封闭壁分离，在它们之间形成气体供给通道，多孔内壁围绕内壁，内壁与多孔内壁分离并在其之间形成产品流动通道。 气体供给/分配挡板结构定位在容器的底部区域中并与气体供给通道流体连通以提供气体供给。 气体进料通过多孔外壁进入气体进料通道和吸附剂床，并沿大致径向向内部多孔壁和产物流动通道的方向进入。 产品出口定位在底部区域中并与产品流动通道流体连通，用于从吸附床收集通过多孔内壁通过的产品气体。 柔性膜在其上端在多孔外壁和多孔内壁之间延伸，并且被加压以便承载在吸附材料的上表面上，以防止气流期间的流化。
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