Thesis (PH. D.)--Columbia University, 1935. / Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: p. 81-82.

Thesis (Ph. D.)--University of Illinois, 1914. / Cover title. Vita. Pub. also as Bulletin no. 79, Engineering Experiment Station of the University of Illinois under title: The coking of coal at low temperatures ... by S.W. Parr and H.L. Olin.

Inaug.-Diss.--Heidelberg. / Lebenslauf.

Thesis. / Includes bibliographical references.

No description available.

No description available.

The combustion performance of 35% by mass dispersions of low, medium and high volatile coals in 950 Redwood second fuel oil have been investigated and compared with the combustion of the constituent fuel oil over a range of excess air from 2% to 30%. A low-pressure air-atomising Stordy-Hauck burner was used in a refractory lined flame tunnel, 3050 mm in length and 610 mm internal diameter. Each fuel was burnt at the rate of 22 litres per hour. Flame temperature, emissivity and length were measured. Particulate solids, NO[x] and SO[x] were determined in the flue gases. It was found that the flame length was increased by the presence of coal in the fuel oil. The flame with coal-oil dispersions is more thermally emissive than that of the constituent fuel oil alone. The emissions of SO[x] are reduced, NO[x] are increased and particulate emissions levels are higher from coal-oil dispersions, when compared to those from 950 Redwood second fuel oil alone. The calculated equilibrium NO and SO[3] concentrations in the flue gas compare favourably with those measured. Electron and optical micrographs of the particulate solids revealed different structures which suggest different combustion mechanisms. A combustion model is developed which successfully predicts flame lengths except in the case of the low volatile coal-oil dispersion.

The aim of this study was to gain a better understanding of the processes governing the distribution of the heteroatoms, sulphur and nitrogen, between the various products formed during fluidised bed pyrolysis/gasification under conditions particularly relevant to industrial hybrid combined cycle power generation.

The primary aim of this study was to examine changes in coke properties in an attempt to establish a better understanding of the behaviour and degradation mechanism of metallurgical coke in the unfavourable mechanical, thermal and chemical environment of a blast furnace. The attainment of such knowledge would assist coke manufacturers and blast furnace operators to monitor and tailor the properties of the metallurgical coke to meet the optimum requirements necessary for efficient furnace operation.

The work presented in this thesis aims at furthering the understanding of the microtexture of metallurgical cokes with regard to the interfacial properties of their optical components. Metallurgical coke, on the scale considered, can be understood as a composite of unfused carbon embedded in a porous matrix of fused material. The matrix is composed of textural units varying in size and shape depending on the rank of the coal or blend of coals carbonised. The quality of the interfaces between them and of those they form with the unfused material can reasonably be expected to influence macroscopic coke properties such as mechanical strength.