Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 482 for “"Distillation"”.
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Distillation
Ernest Hemingway conveyed emotion with an elegantly straightforward system. My methodology is patterned after his. To share a feeling, I recall the sharp details that caused it: buzzing bees fading to autumn's dry red rustle; a murmur of voices from the sidewalk below; stars creeping across a …
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Multicomponent distillation dynamics
… of the composition dynamics of multicomponent distillation in a plate column. A ten-plate bubble-cap distillation column 21 feet in length with a two-foot inside diameter and a one-foot plate spacing was used. There were 22 two-inch bubble caps per plate. The feed system consisted of benzene, …
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Extractive and azeotropic distillation
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1947
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Sieve plate distillation dynamics
… composition dynamics of a bench size sieve-plate distillation column. The column was 2-3/4 inches in diameter, 30 inches in length, and contained 10 sieve-plates spaced 2-1/4 inches apart. A benzene-toluene mixture was used as the feed to the column. The pulse testing method for obtaining dynamic …
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Comparison of Multieffect Distillation and Extractive Distillation Systems for Corn-Based Ethanol Plants
… water/gal ethanol respectively using multieffect distillation. Karuppiah, et al use column rating and mathematical optimization methods and shortcut design models to design evaluate and optimize the energy and water consumption. In this work, we compare shortcut design and rigorous simulation …
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Membrane distillation in dairy processing
Membrane distillation (MD) is a novel membrane process for industry which promises to be a low energy and/or low cost alternative to established separation technologies. The overall objective of this research was the theoretical and experimental investigation of direct contact MD (DCMD) for major …
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Structured packing in air distillation
… packings could enhance their balance in air distillation. A new packing was therefore developed to have a higher efficiency than conventional ones. The vapour phase resistance was targeted for reduction, since most packing models predict this to be dominant. The final shape was chosen as the …
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Flow patterns on distillation trays
Studies into the two-phase flow patterns produced on a sieve tray were carried out using an air-water simulator of 2.44 m in diameter. The flow patterns were investigated by a number of methods, direct observation using directional flow pointers; by water-cooling to simulate mass transfer; and by …
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Score Distillation via DDIM Inversion
… images, 3D shape generation methods like Score Distillation Sampling (SDS) built on these 2D diffusion models produce cartoon-like, over-smoothed shapes. To help explain this discrepancy, in this paper we prove that the image guidance used in Score Distillation can be understood as the velocity …
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Feedforward control of binary distillation
… were determined from pulse tests of a binary distillation column. Similar transfer functions were determined by mathematical solution of the linearized differential equations describing the column. Comparison of these two sets of functions showed that the simple feedforward controller transfer …
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Distillation and simulation in quantum information
… to study two kinds of fundamental tasks, i.e., distillation and simulation in quantum information theory. We investigate these tasks in a unified framework of resource theory and focus on their computation and characterization with finite resources. Particularly we study the tradeoff among …
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Enhanced knowledge distillation by auxiliary classifiers
… to mitigate this limitation, knowledge distillation has gained much attention due to its generalizability and simplicity in implementation. This thesis introduces the enhanced knowledge distillation (EKD), a simple yet effective approach to outperform the canonical knowledge distillation …
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Reduced order modeling of distillation systems
The concept of distillation separation feasibility is investigated using reduced-order models. Three different models of nonequilibrium rate-based packed distillation columns are developed, each with progressive levels of complexity. The final model is the most complex, and is based on the …
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Membrane distillation for high salinity desalination
Membrane distillation systems typically have low energy efficiency. Multistage membrane distillation (MD) systems can have significantly higher efficiencies than their single stage counterparts. However, multistage MD system design has received limited attention. In this work, the performance of a …
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Theoretical and experimental investigation of membrane distillation
Invented in the 1960s, membrane distillation is an emerging technology for water treatment attracting more attention since 1980s. There are four configurations of membrane distillations including air gap membrane distillation (AGMD), direct contact membrane distillation (DCMD), sweep gas membrane …
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Superhydrophobic membranes for membrane distillation and crystallization
Membrane distillation is a promising alternative to conventional desalination processes, offering lower operating temperature and pressures, high salt rejection and the ability to process high concentration feeds. However, inefficiencies exist in the form of low permeate flux and membrane wetting. …
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Enhanced membrane distillation : analytical and deionization applications
Membrane distillation (MD) is a newer technology that is being investigated for applications such as seawater desalination and concentration of fruit and sucrose solutions. The major advantage of MD over traditional thermal distillation is that it requires a substantially lower thermal energy …
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