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.
Results
Showing 1 to 20 of 476 for “"Slurry"”.
-
Experimental hydrodynamic study of the slurry distribution in a vertical slurry heat exchanger
A slurry heat exchanger is simulated as part of the Solvent Refined Coal-I plant to preheat the coal and solvent slurry before hydrogen injection. The shell and tube heat exchanger is oriented vertically with upward slurry flow on the tube side to minimize the localized solid sedimentation in …
-
Transient flow of a slurry
The effect of solid particles on pressure transients produced by flow changes was studied. Water slurries of finely ground limestone were used at concentrations of 10%, 20%, 30%, and 35% by volume in experimental runs in a 2" pipeline. The experimental results were compared to computer simulations …
-
Slurry flowmetering using correlation techniques
A review of slurry flowmeters leads to the conclusion that most are unsuited for measuring the flowrate of abrasive and corrosive slurries such as are found in the gold mining industry in South Africa. An alternative flowmeter based on cross-correlation techniques is thus proposed. Random signals …
-
Measured performance of slurry walls
… thesis evaluates the measured performance of 29 slurry wall supported excavations in Boston, Chicago, Washington DC, and San Francisco - most of which have been constructed since 1980. Each of these case studies includes data on the initial site conditions (soil profile and properties, …
-
Physical modelling of colloidal slurry flows
The study looks at the rheology and pipeline flow properties of colloidal suspensions dispersed in electrolytes of different concentration and type. Fuso silica spheres (0.8pm) form the dispersed phase of the suspension, and KN03, KCI electrolytes the continuous phase. The strength of the …
-
Anaerobic Digestion of Separated Cattle Slurry
Passing whole cattle slurry (WCS) through a mechanical separator removed a large proportion of fibrous solids and produced separated cattle slurry (SCS). SCS gave a higher gas yield (per VS added) at 35oC and a 1O day, 25 day and infinite retention time (RT) than WCS, and three contributing factors …
-
SLURRY ATOMISATION SYSTEM FOR PROCESS CONTROL
The mechanistic processes of slurry atomisation - Direct Current Plasma - Atomic Emission Spectroscopy (DCP-AES) were investigated using excitation temperature (Texc) measurements , simplex optimisation, particle transport experiments and computerised tomography .
-
Diesel injection of coal-water slurry
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, and (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1986.
-
The slurry-phase Fischer-Tropsch synthesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1991.
-
Disaggregation of soil during slurry pipe jacking
… tunnelling has led to the increased use of slurry tunnel boring machines. The slurry is used to stabilise the tunnel face and transport the excavated spoil to the surface. The research detailed in this dissertation assesses the magnitude of soil disaggregation during the excavation and …
-
Fischer-Tropsch synthesis in a slurry reactor
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1982.
-
Slurry Chemistry Effects On Copper Chemical Mechanical Planarization
… particularly the understanding of the wafer-slurry-pad interactions that occur during the CMP process. Novel applications of CMP are expected to expand to materials that are complex chemically and fragile mechanically. Thus, fundamental understanding and improvement of slurry design for CMP …
-
Rheological Study of a Direct Liquefaction Feed Slurry
… study was made of a liquefaction startup- feed slurry. The slurry consisted of North Dakota lignite sized to 70% less then 200 mesh and a carrier solvent of an thracene oil. The rheological behavior of the slurries, o with coal concentrations of 0 to 40% at 40 C, was shown to be Newtonian, …
-
Thermal Performance of Microencapsulated Phase Change Material Slurry
… equipment was used to characterize the MPCM slurry, including a differential scanning calorimeter, a temperature-controlled concentric viscometer, and a well-calibrated heat transfer loop. Results indicate that the use of an effective nucleating agent is necessary to prevent a large amount of …
-
The influence of slurry viscosity on hydrocyclone performance
… theoretical models did try to incorporate slurry viscosity but were developed for very low solids content systems due to the difficulty in measuring slurry viscosity at higher concentrations. Current hydrocyclone models being applied in industry have difficulty in predicting rheological …
-
Analysis of slurry flow in chemical-mechanical polishing
… this thesis develops an analytical model for slurry flow in CMP in two steps. First, a simple but useful method of estimating the effective gap between the wafer and the pad during polishing is developed. The method uses pressurized fluid flow and an analytical model to estimate the effective …
-
AGRICULTURAL ANALYSIS BY PLASMA EMISSION SPECTROSCOPY WITH SLURRY ATOMISATION
… solution nebulisation, hydride generation and slurry atomisation. For aqueous solutions, simplex optimisation with signal to background ratio as the criterion of merit, vertical viewing position was found to be most critical. A continuous-flow hydride generator was interfaced to the DCP via a …
-
The microbial ecology of cow slurry in vermiculture beds
The suitability of cow slurry as a substrate for vermicomposting by Eisenia fetida was investigated. Particular attention was given to the effects of the earthworm on the decomposition and stabilisation of the slurry; and to the interactions between E. fetida and the microflora of the substrate. …
-
Slurry deposition of high quality layers for 3D printing
Slurry-based three dimensional printing is being used to create ceramic parts directly from CAD files. Layers of slurry are deposited by using an x-y positioning system to raster a slurry nozzle over a powder bed. A binder material is selectively printed into each layer to define a slice of the …
Page 1 of 24