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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

The design, simulation, and optimisation of distillation columns

Effiong, E. E. January 1988 (has links)
No description available.
52

The economics of heat pump assisted distillation of methanol water mixtures

Omideyi, T. O. January 1986 (has links)
No description available.
53

Synthesis of separation systems for multi-component mixtures with emphasis on energy recovery and integration

Kakhu, A. I. January 1988 (has links)
No description available.
54

Interactive design of multicomponent distillation columns

Maciel, Marina Regina Wolf January 1989 (has links)
No description available.
55

Olefin production via reactive distillation based Olefin metathesis

Morrison, Ryan Frederick 14 February 2012 (has links)
Reactive distillation is a combination of a traditional multi-stage distillation column with a chemical reaction. The primary benefits of a reactive distillation process are reduced capital costs for equipment and energy in addition to enhanced conversion for equilibrium-limited reactions. One such equilibrium-limited reaction is an olefin metathesis. Olefin metathesis is a catalyzed reaction that breaks the double bond in olefins and rearranges the alkene fragments into new olefinic products. A comprehensive investigation of a reactive distillation based olefin metathesis and supporting experimentation is documented here. A small pilot plant study was performed for pilot scale performance comparison. Bench reactor experimentation was conducted for the purposes of learning detailed information on specific metathesis reactions. Lastly, a process simulation study was completed for comparison in performance with the small pilot plant process. The small pilot plant study involved the design, construction, testing, operation, and optimization of a reactive distillation column. Continuous operation campaigns at two different hydraulic capacities within the reactive zone were performed and their performances were compared. A higher hydraulic capacity proved to be more efficient and more selective for the conversion of medium molecular weight olefins into both lighter and heavier olefinic products. Bench reactor experiments were designed with the intent of investigating specific alpha olefin metathesis reactions and obtaining conversions, selectivities, and yield structures for future simulation work. However, under conditions similar to that within the small pilot plant process, there existed a high frequency of secondary double bond isomerization (possibly due to an isomerization activity for alumina). There was also an observed dependence on temperature for both the primary metathesis and secondary isomerization reactions. A process simulation representative of the small pilot plant process was constructed in AspenPlus. Using a simplified reaction network based on assumptions and analysis of the reactive zone, its performance was compared with that of the small pilot plant process. The simulation performance tended to underpredict overhead compositions, but accurately simulated the bottoms product composition. Because reactive distillation has not been used with a heavy olefin metathesis reaction, this dissertation demonstrates the uniqueness and effectiveness of a reactive distillation based heavy olefin metathesis. / text
56

Membrane use in ethanol recovery processes

Sroka, Linda Marie Norfolk 08 1900 (has links)
No description available.
57

A study of low pressure distillation in a packed column

Ergle, John Loflin 12 1900 (has links)
No description available.
58

Distillation of sawdust in a fluidized bed : II. Analysis and Yields

Morgan, Lyman Wallace 08 1900 (has links)
No description available.
59

Conventional distillation versus extractive processes for recovery of selected organics from aqueous feeds

Poehlein, Steven Ray 05 1900 (has links)
No description available.
60

Studies in the economic modeling and optimization of distillation sequences

Reinhardt, Gerard E. 08 1900 (has links)
No description available.

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