High pressure direct contact oxy-fired steam generator
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United States of America Patent
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Mar 20, 2018
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app pub date -
Nov 4, 2016
filing date -
Dec 10, 2008
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Abstract
A method and apparatus for direct contact steam generation for a variety of industrial processes including heavy oil recovery, power generation and pulp and paper applications. The steam generation system consists of a combustor and steam generator and is constructed to be operable at elevated pressures. The fuel, at least one oxidant and a fluid supply including water are supplied at pressure to the combustor. Flue gas from the combustor is delivered to the direct contact steam generator at pressure, and upon direct contact with water produces a flue gas stream consisting primarily of steam. This product stream can then be cleansed and used for industrial application. The combustor can be operated with low grade fuel and low quality water with high solids and hydrocarbon contents. The apparatus and method reduce the environmental footprint by reducing air emission, concentrating CO2 to enable capture and reducing clean water requirements.
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