Abstract:
The invention relates to the use of adsorbent materials that have been selected on the basis of their relationship between that material's intrinsic rate and equilibrium properties.
Abstract:
The invention comprises a PSA apparatus for the separation of a heavy component from a light component in a feed stream. The apparatus includes an adsorbent bed comprising either a mixture of adsorbents or composite adsorbent particles wherein each particle comprises two or more adsorbents. At least one of the adsorbents is comparatively weak and the other is comparatively strong. Another embodiment of the invention is a PSA prepurifier having a bed of adsorbent material which comprises a mixture of, or composite adsorbent particles wherein each particle comprises at least two adsorbents, at least one of the adsorbents being comparatively strong and at least another of the adsorbents being comparatively weak.
Abstract:
A PSA process involving the storage of products of various purities in segregated storage tanks for subsequent usage is disclosed. Products of increasing purities, admitted at the product end of the bed, are used during purging and repressurization steps. In addition, different composition streams collected at the feed end of the bed during the countercurrent depressurization step are admitted at the feed end of the bed, in the order of increasing product component content, during the rising pressure step(s). This cycle gives higher recovery and lower bed size factor than prior art PSA cycles.
Abstract:
Feed air to a prepurifier adsorption system/cryogenic air separation system for dry, high purity nitrogen and/or oxygen production is dried in a membrance dryer preferably characterized by a countercurrent flow path. Drying is enhanced by the use of purge gas on the permeate side of the membrane dryer, with adsorption system or cryogenic air separation system product or waste gas, dried feed air or ambient air being used as purge gas. Two membrane materials are employed in the membrane dryer, in a single stage or in two stages, for enhanced removal of water and carbon dioxide from the feed air.
Abstract:
A refrigeration storage assembly for the storage of biological materials and the like wherein a higher temperature mechanical refrigeration source and a very low temperature cyrogenic liquid refrigeration source coact to maintain an intermediate low storage temperature.
Abstract:
The thermoplastic polymeric surface to be adhesively bonded is flame-sprayed with a material having a surface free energy which is greater than the surface free energy of the thermoplastic polymeric surface. In a specific application of the invention, a particulate coating is formed on the thermoplastic polymeric surface by flame spraying the surface with a material selected from the group consisting of carbon, ceramics, metal, metal oxides, metal alloys, and mixtures thereof. An adhesive coating is applied to the flame-sprayed surface, following which particulate material is applied to the adhesive-coated substrate to form the particulate coating.
Abstract:
A metal substrate is provided with a single layer of randomly distributed metal bodies bonded to the substrate, spaced from each other and substantially surrounded by the substrate to form active condensation heat transfer surface and body void space.
Abstract:
A modular fastening kit is provided. The kit includes at least one first connecting unit having a first end including a male connector and an opposite second end including a female connector. The kit includes at least one second connecting unit having a first end including a female connector and an opposite second end including a female connector. The kit includes at least one third connecting unit having a first end extending along a first axis and including a male connector and an opposite second end extending along a second axis and including a male connector. The first axis extends transverse to the second axis. The male connectors each have an exterior fluted surface and the female connectors each have an interior fluted surface. The female connectors are each configured and dimensioned to removably receive one of the male connectors. Systems and methods are disclosed.
Abstract:
A modular fastening system includes a plurality of connecting units. Each connecting unit having at least one male connector at a first end and a female connector at an opposite second end. The male connector having an exterior fluted surface and the female connector having an interior fluted surface to form one connecting unit that can be configured and dimensioned in various confutations and to have various angles. The system will include at least one bracket member that is connectable to a connecting unit and is configured to support an electrical or fluid conduit.
Abstract:
This invention discloses an optimum set of adsorbents for use in H2-PSA processes. Each adsorbent bed is divided into four regions; Region 1 contains adsorbent for removing water; Region 2 contains a mixture of strong and weak adsorbents to remove bulk impurities like CO2; Region 3 contains a high bulk density (>38 lbm/ft3) adsorbent to remove remaining CO2; and most of CH4 and CO present in H2 containing feed mixtures; and Region 4 contains adsorbent having high Henry's law constants for the final cleanup of N2 and residual impurities to produce hydrogen at the desired high purity.
Abstract translation:本发明公开了一种用于H 2 -SPSA方法的最佳吸附剂组。 每个吸附床分为四个区域; 区域1包含用于除去水的吸附剂; 区域2含有强吸附剂和弱吸附剂的混合物以除去大量杂质如CO 2; 区域3包含高堆积密度(> 38磅/平方英尺)吸附剂以除去剩余的CO 2; 并且大部分CH 4 SO 4和CO存在于含H 2的进料混合物中; 并且区域4包含用于最终净化N 2 H 2和残余杂质以产生所需高纯度的氢的亨利常数常数的吸附剂。