Abstract:
Combustion of hydrocarbon fuel is achieved with less formation of NOx by feeding the fuel into a slightly oxygen-enriched atmosphere, and separating air into oxygen-rich and nitrogen-rich streams which are fed separately into the combustion device.
Abstract:
The efficiency of selective non-catalytic reduction reactions for converting NOx in a flue gas to molecular nitrogen is improved by producing the flue gas from combustion of fuel with oxidant having an oxygen concentration above that of air.
Abstract:
A method of generating electrical power in which a synthesis gas stream generated in a gasifier is combusted in an oxygen transport membrane system of a boiler. The combustion generates heat to raise steam to in turn generate electricity by a generator coupled to a steam turbine. The resultant flue gas can be purified to produce a carbon dioxide product.
Abstract:
A fuel-fired steam generation apparatus such as a boiler can produce steam at a rate higher than the maximum rate at which it can produce steam using air as the only source of oxygen for combustion, by combusting the fuel with oxidant having a higher oxygen content than air but feeding the oxidant at a volumetric flow rate lower than the rate at which maximum steam production is obtained with air as the only source of oxygen for combustion.
Abstract:
In a kiln whose interior is heated by combustion with oxidant having a higher oxygen content than air, streams of staging oxidant are fed into the space between the combustion zone and the inner surface of the kiln, and the stoichiometric ratios and amounts of oxygen in the combustion zone and in the overall operation of the kiln are adjusted to provide control or reduction of NOx formation while maintaining or increasing productivity of the kiln.
Abstract:
The unburned carbon content of ash is reduced by entraining a stream of the ash into a stream of oxidant and combusting the unburned carbon with oxygen in the oxidant.
Abstract:
Disclosed are methods for accommodating changes in the conditions of partial oxidation of hydrocarbonaceous feedstock by changing characteristics of the hot oxygen used in the partial oxidation.
Abstract:
Disclosed is methodology for controlling the H2:CO ratio of the product produced in a partial oxidation reactor, by carrying out the partial oxidation under temperature conditions that produce less than maximum conversion.
Abstract:
Disclosed is methodology for controlling the H2:CO ratio of the product produced in a partial oxidation reactor, by adjusting the properties of the product formed in the partial oxidation.