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The Condensation Of Vapors From Gas - Vapor Mixtures, Lewis George King, Walter Andrew Blumenscheid

Theses

Superheated mixtures of cyclohexane vapor and nitrogen and benzene vapor and nitrogen were passed at various flow rates downward through a vertical double pipe condenser with cooling water flawing counter-currently in an annular space.

The method of Colburn and Hougen for the design of cooler-condensers was used to compare predicted heat transfer area to the experimental heat transfer area. Based on the ay-stems investigated, limits of accuracy of the predicted heat transfer areas were set as a function of inlet and cutlet Reynolds numbers. A suggested modification of the Colburn-Hougen correlation was made to extend the limits of accuracy. It …

Azeotropic Sulfonation Of Chlorobenzene, Peter Norman Lensi

Theses

A miss of experiments were conducted to determine the efficiency of the sulfonation of chlorobenzene by equilmolar proportions of sulfuric acid in various organic media her azeotropic conditions. The efficiency of the system wan show to be tins dependent, and based upon the conditions used, yields of 20% were obtained.

Heat Transfer To A Solids-Air Suspension, Samuel Levinson, Sanford Jerome Tick

Theses

An apparatus for the investigation of heat transfer to air-solid suspensions was designed, constructed and operated. The apparatus consisted of a solids feeder (a fluidized bed), an air-solids mixing tube, a heat exchanger, and a solids separator.

The use of the fluidized bed as a solids feeder proved satisfactory from the standpoint of maintaining a constant feed rate and a constant solids to air ratio. Ease of variation of the solids to air ratio and air flow with the fluidized bed as a feeder was satisfactory, although difficulty was experienced in getting the desired solids to air ratio within a …

Recovery Of Phthalic Acid, George Thomas Roberts

Theses

Crude phthalic acid from the fusion processing of alkyd resins was found to be recoverable by solvent extraction, neutralization-acidification, sublimation, distillation, esterificatton with monohydric alcohols, ion exchange or alkyd resin preparation.

The author proposes that alkyd resin preparation, based on analysis of the crude phthalic acid, is the most practical way for the alkyd resin manufacturer to recover the crude phthalic acid. No purification of the crude phthalic acid is necessary for this utilization and the resulting alkyd resin is saleable at a profit.

Exchange Adsorption Of Electrolytes On Titanium Dioxide, Richard Algimantas Slepetys

Theses

During the manufacture of titanium dioxide pigments many processing steps are carried out in solutions of electrolytes. Adsorption of these electrolytes strongly affects properties of the finished pigments.

Adsorption of electrolytes Was studied on titania samples prepared by controlled neutralization of titanium tetrachloride solutions with ammonium hydroxide, and one sample of commercial sulfate process rutile titania. In analogy to zirconia--as reported by Kraus and Phillips?^22,23 titania also behaved as a weak anion exchanger in acid solutions and as a weak cation exchanger in basic solutions. Acid or base liberated was approximately equivalent to ions exchanged. On the best sample …

Self-Heating Of Wood Fiber, Kenneth Norman Smith

Theses

An investigation was made to determine what portion of wood is responsible for the self-heating of wood fiber, where self-heating is defined as the increase in temperature of a material above the temperature of its surroundings due to an exothermic reaction occurring within the material. The phenomenon of self-heating of wood fiberboard has long been known, but very little has been done to discover the particular part of the wood which generates the heat.

Wood fiberboard was tested for self-heating by placing a. cubical sample in a specially constructed furnace and heating it to a uniform temperature of 325?F. As …

Continuous Chlorosulfonation Of Benzene Ii Phase Relations, Ernest Eugene Wiegleb

Theses

This work presents data for the separation of materials involved in the chlorosulfonation of benzene using carbon tetrachloride as an inert extraction solvent. Equilibrium and tie line data for the liquid ternary systems; carbon tetrachloride chlorosulfonic acid - sulfuric acid; Benzenesulfonyl chloride - carbon tetrachloride - sulfuric acid; benzenesulfonyl chloride ehiorosulfonic acid - sulfuric acid and for the quaternary system benzenesulfonyl chloride - carbon tetrachloride chlorosulfonic acid - sulfuric acid have been determined. The tie line data has been correlated by the method of Othmer and Tobias.

Data for two chlorosulfonations made under differing conditions is also given.

Viscosity Of A Three Component System, Acetone-Ethanol-Water, At 25°C And 30°C, Peter Fred Widmer

Theses

The viscosity in the three component system Acetone-Ethanol-Water has been determined over a range of compositions at two different temperatures, 25°C and 30°C. Compositions have been varied in increments of ten percent by weight to cover all possible combinations of the three components. The data obtained are presented on triangular coordinate graph paper with lines of constant viscosity indicated and also in tabular form.

The Use Of Perlite As An Adsorbent, John Herrick Eigler

Theses

The adsorptive properties of perlite, an expanded volcanic glass, have been studied. Several activating treatments were investigated, air oxidation it 400 degrees Centigrade appears to be the best, The adsorption of the basic dye emethylene blue yields a saturation valve of 50 milligrams per gram of perlite. The acid dye cotton blue showed no measurable adsorption. A maximum adsorption of 15 millimoles of acetic acid and one milligram of iodine were found in aqueous solution. A high value of 1.33 milligrams of iodine per gram of perlite were found in methyl alcohol solutions. The surface area of perlite appears to …

The Control Of Industrial Sales Operations, Herbert Gieser

Theses

With selling becoming so competitive in the past quarter century, managerial control over the sales organization is necessary for survivals Essentially, controls cover the regulation and administration of territories, expenses, and the measurement of performance.

The purpose of this thesis is to investigate the various phases of controls, the many plans which can be applied, and the advantages and disadvantages of these plans. Emphasis is placed on the case studies of some of the many firms which have put these control programs to work successfully.

This thesis is intended for management executives, sales managers, and sales staff executives in equipping …

Aryl Sulfonation In Presence Of Phosphrous Trichloride, William Calvert Tanner

Theses

With sulfuric acid as the sulfonating agent, phosphorus trichloride is demonstrated as being effective in facilitating the sulfonation of some aromatic compounds. Optimum conditions are a molar ratio of 0.5 mole of sulfuric acid: 1.0 mole of aromatic compound with 4 - 5% more phosphorus trichloride than is required to react with the available water in the system, and reaction temperatures between 50°C. and 60°C.

The aromatic compounds studied were benzene, chlorobenzene, bromobenzene, and nitrobenzene.

An Analysis Of Predetermined Time Systems, Richard Otto Schmid

Theses

This paper endeavors to compare three predetermined time systems, namely; Work-Factor, Methods-Time Measurement and Basic Motion Time-study, elemental-by-elemental, through the use of a series of detailed analyses. The following information in the form of conclusions and recommendations has been set forth from the investigation of the various comparative analyses contained herein:

1. Reasons for the variation between the elementals.

2. A chronological order of attack for further study with an eye to accomplishing the most in the shortest possible time.

3. The results of a composite analysis which utilizes the most realistic elemental definitions of the three systems. (This includes the comparison of …

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Power Requirements In Pigment Comminution, Joseph Timothy Gildersleeve

Theses

The results of this work prove that the relation between total work and surface area developed in the wet grinding of pigments is an exponential function. The following equations were experimentally determined for the pigments studied:

For Zinc Oxide; P = .090 (Δs)1.05

For Titanium Dioxide: P = .086 (Δs)1.072

For Calcium Carbonate: P = .107 (Δs)0.98

This work shows that in the grinding of sub-sieve size pigments the Rittinger and Bond theories which state that surface area developed is directly proportional to total work, are not valid and cannot be applied.

It is also shown in another plot that …

Composting Coffee Waste, Lawrence James Hickey

Theses

Disposal of waste, and specifically organic waste, has become a serious problem in such industries as the canning, meat-packing, dairy and other food producing industries. Recently, with the introduction of instant coffee powder, this particular industry now has a waste disposal problem with the resultant coffee residue. Composting or biologically decomposing this waste to yield an organic fertilizer is one of the many ways to solve this problem.

There are no papers in the literature concerning composting of coffee waste and only one paper (65) is available covering studies of high rate composting of garbage and refuse. It is known …

The Condensation Of Vapors From Gas-Vapor Mixtures, Stanley Anthony Mruk, William Charles Kraemer

Theses

Superheated mixtures of cyclohexane vapor and nitrogen gas were passed at various rates downward through a single tube condenser with the cooling water flowing countercurrently in an annular space outside the condenser.

The method of Colburn and Rougen for the design of cooler-condensers was applied and the calculated condenser lengths are compared to the experimental length.

Relatively good agreement with the design method was found for cases where there was little or no streamline flow of the gas-vapor mixture in the condenser. With increasing amounts of streamline flow* the design method tends to be increasingly conservative.

The Three Phase System N-Hexane - Aniline - Water, Charles S. Potosnak

Theses

This is a study of the three phase system - n-Hexane Aniline - Water at 50° Centigrade. The data obtained, coupled with data previously established at 36° Centigrade is used to predict a means of recovering aniline from 3-5% aqueous solutions by scrubbing with n-hexane.

Thermodynamic Properties Of Trimethylamine, John Bernard Riley

Theses

The thermodynamic properties of trimethylamine have been evaluated at temperatures from 32°F to 600°F and from the saturation pressure to 2000 lb/in² based on available experimental data. An equation relating the pressure, volume and temperature of the system has been derived for the range in which experimental data were available and it was used to evaluate the thermodynamic properties in this range. Values for pressure, volume, temperature, enthalpy and entropy have been presented in the form of tables and graphs.

Ammonia Catalized Phenol Formaldehyde Resins, Murlin Charles Ehrgott

Theses

The literature on ammonia-catalyzed phenol-formaldehyde resins is reviewed and critical comparisons are made of the manner in which the ammonia-catalyzed resins differ from both the alkali- and acid-catalyzed resins.

Intermediate products formea during the initial stapes of the ammonia-catalyzed phenol-formaldehyde reactions, as reported in the literature, are tabulated and % N contents are calculated.

Experimental determinations of N content of resins with molar ratios of 1:1.25 phenol to formaldehyde with ammonia at 0.2, 0.5, and 1.0 moles per mole of phenol, show that at the 0.2 molar ratio of ammonia, all the N enters into the resin and remains during …

Transesterification Of Alkyl Borates, Garry Gustav Eichmann

Theses

An attempt was made to prepare pure methyl borate by an ester interchange using a high-boiling alkyl borate in combination with methyl benzoate or methyl phthalate. The product, assumed to be methyl borate, boiled at about 70°C., which is 5° higher than the expected boiling point, and analyzed at 88 to 95%.

Various catalysts, such as hydrochloric acid, sodium methoxide, p-toluene sulfonic acid, aluminum isopropoxide, and aluminum chloride, were tried before magnesium-aluminum ethoxide was chosen as the best catalyst for this particular tranesterification reaction.

The Fatty Acid Alkanolamide Reaction, Julius Galender

Theses

An alkanolamide detergent can be formed by the condensation of coconut fatty acid and diethanolamine. A great many factors can influence this formation. It is shown that varying the molar ratio of amine to acid, results in a change in the fraction of acid converted. It similarly affects the molar quantities of amine converted. Molar conversion of acid or amine is dependent upon the type of atmosphere in the reaction; more acid is converted when a nitrogen sweep is employed than when it is not used. However, proportionately more amine is converted, when a nitrogen sweep is not used. When …

Heat Transfer Coefficients Of Condensing Vapors, Charles Rocco Lipuma, Earl Adolph Nirmaier

Theses

The film coefficients of heat transfer for vapors condensing on a single horizontal tube have been measured for methyl, i-propyl, and n-butyl alcohols. The equipment used was specifically designed for these studies, and represents an improvement over that used by other investigators. The data collected were analyzed usingmodified Wilson method which is based on a rigorous theoretical analysis.

It has been found that the condensing film coefficients for methyl and i-propyl alcohols vary with the heat duty. This is to be expected from the analysis mentioned above. Me variation was found for n-butyl alcohol.

The observed values of the heat …

Liquid-Gas Flow In Venturi Meter And Sharp Edged Orifice, Frank John Chwalek

Theses

The results of a study of pressure drops across a 5/32 inch throat venturi meter and a 5/32 inch thin plate sharp-edged orifice for the horizontal cocurrent, flow of the air-water two-phase two-fluid system in a 3/4 inch pipe under essentially isothermal conditions, are presented. This is the first critical study of two phase flow in a Venturi meter and. in a 5/32" orifice.

Flows of water of 0.1 to 1.7 gallons per minute with air rates in range of 0.00022 lbs/sec. to 0.0092 lbs/sec. of air mixed in were studied. All flows were turbulent when judged with the conventional …

Hydrolysis Of Sodium Silicofluoride, Frank Arthur Graf

Theses

The kinetics of an apparent solubility decrease of commercial sodium fluoride encountered in a piece of equipment designed to produce saturated sodium fluoride solution was Investigated, in order to understand why a consistently saturated solution was not possible to achieve with plain tap water as solvent.

The main impurity, about 1 percent sodium silicofluoride, coats the sodium fluoride crystals, resulting in an equilibrium shift during dissolution of the salt in water; and under certain conditions results in the formation of a protective gel. Therefore, in order to produce a constant strength sodium fluoride solution, this coated impurity must be decomposed …

The Preparation Of 3,4-Diaminopyridine, Emil John Fencl

Theses

The preparation of 3,4-diamincpyridine from pyridine was investigated, but found to be of little synthetic value because of the low yield obtained on the rearrangement of 4-nitraminopyridine to 3-nitro 4-aminopyridine. In attempt to nitrate nicotinamide-N-oxide resulted in the isolation of nicotinic acid-N-oxide. Attempts to nitrate nicotinic acid-N-oxide were unsuccessful. Attempts to oxidize 3-methylpyridine-N-oxide and 4-nitro-3-methylpyridine were unsuccessful. The nitration of 3-methylpyridine-N-oxide led to the isolation of 2-nitro-5-methylpyridine, which has not previously been reported as a by-product of that reaction.

Heat Transfer Coefficients In An Agitated Vessel Using Verticle-Tube Baffles, Edward Joseph Barrasso

Theses

Data are presented to show the effect of impeller speed, impeller type, and fluid properties on the forced-convection film coefficient of heat transfer for verticle tubes in a cylindrical vessel. A generalized equation to predict the film coefficient of heat transfer on the outside of verticle tubes in an agitated vessel for both cooling and heating is also presented. This equation may be used to estimate the necessary areas of heat transfer for verticle tubes in an agitated vessel within the degree of accuracy required from most engineering calculations.

This study was the first initiated to develop an equation to …

Electrodeposition Of Cellulose And Carboxy-Methylcellulose, Charles Edward Driesens Jr.

Theses

The previous work done by Frank Cozzarelli on the eleotrodeposition of cellulose from a sodium zincate-urea-cellulose system has been verified, except that zinc was found to deposit on the cathode at all voltages and current densities within the range of the optimum conditions for deposition. The optimum conditions are: voltage - 1.10 to 1.28 volts; current density 0.13 to 1.10 amperes/square foot; electrode material - copper. Current efficiencies range from 0.80 to 5.53%.

A chelate-like complex formed from the sodium zincate and urea which couples with the cellulose has been proposed as a possible explaination of the mechanism governing the …

Activity Coefficients Of Gases In Binary Mixtures, John Gressler Engleman

Theses

The theory and usefulness of vapor phase activity coefficients have been developed. The equations, charts and calculation procedures to be used for the three methods are included with a set of sample calculations in their most convenient form.

Activity coefficients for 236 experimental points have been calculated by the three methods for both components of tour binary gaseous systems. These systems are Argon - Ethylene (36 points), Hydrogen - Nitrogen (32 points), Methane - Ethane (112 points) and Methane - n Butane (56 points). Wide ranges of pressure, temperature and mol fraction are included.

The % deviations of calculated from …

Effect Of Concentration On The Mass Transfer Coefficient In The Liquid Film, Marvin Baker Schaffer, Philip Major Pomerantz

Theses

The effect of liquid concentration on the resistance to mass transfer across the liquid film is studied for an acetone-methyl isobutyl ketone-air system in a packed tower. The liquid film resistance is computed by measuring the overall resistance for various concentrations and subtracting the gas film resistance. The gas film resistance is determined at the same liquid and gas rates by measurements on the pure components.

In the theory developed to handle the calculations, it is assumed that the interface temperatures are the wet-bulb temperatures based on a dynamic equilibrium. This supposition is supported experimentally at a liquid rate of …

A Study Of The Functional Stability Of Sunscreen Compounds, Jesse Howard Starkman

Theses

Previous work reported in literature, indicates that commercial sunscreen compounds were subject to breakdown on exposure to ultraviolet radiation with consequent change in their functional efficiencies.

These findings ware retested under conditions more closely approximating actual usage.

A new method of evaluation which closely correlates to actual experience in large scale usage, was applied. This method provides, from simple spectral data, a reliable index of physiological efficiency of the sunscreen compound. As a result, twelve commercial sunscreen compounds were exposed to ultraviolet radiation for varying periods. Analysis indicated that, contrary to the previous reports, no significant Changes in physiological efficiency …

Correlation Of Curtis And Gullett Equation For Viscosity Of Non-Newtonian Suspensions And Franks And Rinaldi Equation For Heat Transfer Coefficients, Irene S. Wisla, John L. Kukowski

Theses

Curtis and Gullett (7) developed an equation correlating the effect of velocity, concentration and particle size on apparent viscosity of non-Newtonian water slurries.

μ/μ_w=1.02(AK/GC)^.105

The object of this paper was to determine the validity of using the viscosity, as determined by the Curtis-GulLett (7) equation, in predicting the heat transfer coefficient of non-Newtonian fluids, where the suspending medium is something other than pure water . The authors used various concentrations of sugar solutions as the dispersion medium, for the slurries.

A dimensionless equation resembling the flittusBoelter equation with modified exponents and additional dimensionless groups has been developed …