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 21 for “"Distillates"”.
-
The effect of temperature, pressure and catalytic agents on coal tar distillates
Made available in DSpace on 2017-11-30T21:03:36Z (GMT). No. of bitstreams: 2 5999350.pdf: 15596843 bytes, checksum: cc8d4750085f4c58435121ae1209e72b (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1918
-
Upgrading hydrothermal liquefaction biocrude oil from wet biowaste into transportation fuel
… compositions, and acidity, were conducted on distillates separated from different feedstocks. SW-, FPW-, and SP-derived biocrude respectively contains 15 wt.% , 56 wt.%, and 15 wt.% distillates with heating values of 43-46 MJ/kg and alkanes with carbon numbers ranging from C8 to C18. Compared …
-
Comparative Performance of Two Domestic Spirit Stills
… wash. The essencia still generally produced distillates with lower ethanol concentrations and lower total ethanol recoveries. The essencia’s performance was more affected by the cooling treatment than that of the T500 still. The mean theoretical plates value of the T500 was 5.08, which was …
-
Effects of Variables on a Soaker-Stripper Reactor for Thermal Cracking of Deasphalted Oil
… scheme DAO is thermally cracked to generate distillates with conversion of the 553 °C+ fraction over 50%. One important current challenge is to increase that conversion level by optimization of the reactor and the flow regime inside it. In this work, a pilot plant was designed, procured and …
-
The terpenes of Virginia pine (<u>Pinus virginiana mill</u>.), with investigations of their attractancy to the southern pine beetle (<u>Dendroctonus frontalis</u> zimm.)
… were analyzed from foliage, phloem, and bark distillates, pentane extracts of xylem resin and beetle pitch tubes, and foliage and tree-bole vapors. Qualitative determinations were made by comparing relative retention time with known chemicals and mixtures of chemicals, and by introducing these …
-
Kinetic Modelling Simulation and Optimal Operation of Trickle Bed Reactor for Hydrotreating of Crude Oil. Kinetic Parameters Estimation of Hydrotreating Reactions in Trickle Bed Reactor (TBR) via Pilot Plant Experiments; Optimal Design and Operation of an Industrial TBR with Heat Integration and Economic Evaluation.
… The growing demand for high-quality middle distillates is increasing worldwide whereas the demand for low-value oil products, such as heavy oils and residues, is decreasing. Thus, maximizing the production of more liquid distillates of very high quality is of immediate interest to refiners. …
-
Modelling, simulation and multi-objective optimization of industrial hydrocrackers
… like heavy vacuum gas oils to valuable middle distillates in hydrogen-rich atmosphere at elevated temperature and pressure. Developments in catalyst and reactor design influence the design and operation of the hydrocracker. This requires choosing design/operating conditions to maximize valuable …
-
Aroma characterization of American rye whiskey by chemical and sensory assays
… direct method of analyzing alcoholic distillates – and Aroma Extract Dilution Analysis (AEDA) – a widely used and well-understood extractive method. SDA was found to provide equivalent results to AEDA while reducing analysis time and avoiding extraction bias. American rye whiskey was …
-
Viscosity and Stability of Visbroken Fractionated Oils
… The feeds and their products were separated into distillates, saturates, aromatics, resins, and asphaltenes, and the properties (molecular weight, density, viscosity, and solubility) of each fraction were measured. Previously developed correlations for molecular weight, density model parameters, …
-
Extracting phycocyanin from spirulina and hydrothermal liquefaction of its residues to produce bio-crude oil
… products were in the range of 200-550°C. These distillates can be further upgraded for transportation fuels.
-
Catalytic Light Hydrocarbon Upgrading under Methane Environment
… used as the model compound of heavy oil cracking distillates and reacted with methane over Ag-Ga/HZSM-5. As a consequence of methane participation, the quality of liquid product is improved in terms of higher H/C atomic ratio, higher heating value and lower bromine number compared with its N2 …
-
Characterization of TPH biodegradation patterns in weathered contaminated soil
… two weeks. The fraction encompassing the middle distillates such as diesel fuel and jet fuel was degraded under all treatment methods, however only the slurry reactors resulted in final TPH levels that would have met regulatory limits. Fractions that eluted after 15 minutes were not effectively …
-
THE STRUCTURE AND REACTIVITY OF SOME METALLURGICAL CARBONS
… The chemical compositions of the coal distillates have been characterised by ir/uv spectrosopy, NMR spectroscopy and by GC-MS techniques. Calorific values of the carbons have been determined. Results are discussed in relation to previous work and to applications 1n blast furnace …
-
Separation And Use Of Oxygenated Byproducts From Non-Catalytically Cracked Triglycerides And Their Methyl Esters
… was successfully separated from cracked TAG oil distillates using liquid-liquid extraction with water and then purified via azeotropic distillation. About 1.6 L of approximately 99 wt% pure acetic acid was produced from 250 L of soybean oil using this process. </p> <p> The acetic acid was reacted …
-
High Grade Carbon From Crop Oil Tars
… while simultaneously removing and recovering distillates to be recycled back through the system where they can be processed into other fuel and chemical products. </p> <p>The carbonization of tar was performed through the use of a lab scale coking reactor. The independent variables were coking …
-
Determinazione delle proprietà del petrolio tramite spettroscopia 1H-NMR e analisi chemiometrica
… cope with an increasing demand of high quality distillates of tighter specifications, while facing the need to process increasingly heavier and poorer quality crudes. Furthermore, the recent trends to process heavy and lower cost crudes spurred the interest on residue upgrading, normally …
-
Hydrothermal liquefaction of wastewater algae mixtures into bio-crude oil
… products were in the range of 200-550 °C. These distillates can be further upgraded for transportation fuels. We also found that there were 4-5 MJ/kg in the solid residue and TG analysis suggested that solid residue could be used as asphalt and roofing materials. GC-MS results indicated that the …
-
Polyol induced extraction (PIE) of water from organic solvents
… gasoline, kerosene, diesel, petroleum distillates, cyclohexane, hexanes), polar aprotic (acetonitrile, 2-butanone, acetone, cyclopentanone, dichloromethane, tetrahydrofuran, 2-methyl tetrahydrofuran, 1,2 dimethoxy ethane, methyl benzoate, propyl carbonate, ethyl acetate, chloroform, …
-
Partial Upgrading of Bitumen Through Combinations of Deasphalting and Visbreaking
… and viscosity parameters of the visbroken distillates and SARA fractions to the measured and ERT-based conversions. Step 4 was to determine the product density from the component parameters using an excess volume mixing rule tuned to the feed density. Step 5 was to determine the product …
-
Phytoremediation of Weathered Petroleum in Groundwater by Arroyo Willows in Nutrient Amended On-Site Mesocosms
… at a former oil field where mid-range petroleum distillates were used as a diluent for pumping crude oil contaminated the soil and groundwater at the site with petroleum compounds. Ten mesocosms were constructed at the field site using un-impacted soil and diluent-impacted groundwater from the …
Page 1 of 2