摘要:
A process for recovering a given component from a first gas stream in which the given component is intermittently present by PSA or TSA using an adsorbent which more strongly adsorbs the given component by introducing into the first gas stream, prior to PSA or TSA treatment, a second gas stream that is enriched in the given component. The second gas stream may be introduced into the first gas stream only during periods when the concentration of given component in the first gas stream is below its maximum concentration or it may be continuously introduced into the first gas stream at a level which is greater than the maximum concentration of given component originally present in the first gas stream.
摘要:
A cryogenic air separation process and method in which air is cooled and after compression and purification then rectified in a rectification column to produce an oxygen rich liquid. An argon-oxygen stream containing liquid lean in nitrogen is separated to form oxygen and argon streams. Argon vapor is condensed to supply reflux to the argon column. An oxygen rich liquid stream is expanded to a pressure at which the oxygen rich liquid is at or below the condensation temperature of the argon vapor and is then vaporized against condensing the argon vapor. The vaporized oxygen rich liquid is then introduced into a nitrogen stripper column and nitrogen is stripped therefrom by a stripper gas to produce the argon-oxygen liquid which is introduced into the argon column. The nitrogen stripper column is regulated to operate at a predetermined pressure range so that the entry level at which oxygen enters the nitrogen stripper column has a pressure level no greater than the pressure of the oxygen rich liquid after expansion. Argon is removed from the top of the argon column as a product. The process and apparatus can be operated to produce high purity argon vapor or liquid very lean in nitrogen and oxygen with the use of trays and/or structured packing as liquid contacting mass transfer elements in the columns. Additionally, high purity oxygen and nitrogen products can also be produced by such process and apparatus.
摘要:
A method and apparatus for determining the location and stability of location of the edges of an object such as an extruded blown film polymeric material annulus. By real time detection of the edge location and mathematical and statistical manipulation of the data in both time and frequency domains, the stability and effects of extrusion parameters on the object can be determined.
摘要:
A process and apparatus for producing a high purity nitrogen vapor product from the rectification of air within high and low pressure columns operatively associated with one another by a condenser-reboiler. The high pressure column incorporates a sufficient number of theoretical stages to produce a high purity nitrogen vapor which after being condensed by the condenser-reboiler, serves to partially condense a lower purity nitrogen vapor tower overhead produced in the low pressure column through indirect heat exchanger. In such service, the condensed, high purity nitrogen vapor is at least partially vaporized and utilized as a product stream. Since there is no direct heat exchange with the high purity nitrogen produced within the high pressure column and the lower purity nitrogen vapor produced in the low pressure column, the low pressure column can incorporate fewer theoretical stages and therefore can be built at less expense than similar air separation plants of the prior art.
摘要:
A device and method are provided for determining the bulk (average) temperature, surface temperature, temperature profile, and thickness of radiation translucent materials. These material functions are determined by evaluation of the intensity of the radiation emitted from the material using two detectors with a radiation source placed in the optical path of one of the detectors. The data is taken at several intensities of source radiation and reduced to obtain the bulk temperature and material thickness. The second detector is used to measure the surface temperature. These data are then used to determine the temperature profile in the material.