Abstract:
Mechanical and electrical power are produced along with synthesis or fuel gas by the partial oxidation process with integrated combustion and steam turbines. By-product vaporized liquefied natural gas for feed to a pipeline for gas consumers is obtained by heat exchange with heat containing streams from the partial oxidation gasification and gas cleaning and purification zone; and optionally from heat containing streams from combustion and/or steam turbine zones which are integrated with said partial oxidation process. Heat from the combustion turbine exhaust gas is used as follows: (1) superheat steam for use in a steam turbine; (2) preheat water saturated clean sulfur-free synthesis or fuel gas with or without supplemental methane enrichment; (3) preheat oxygen gas for said partial oxidation zone; and (4) vaporize LNG. Pre, inter, and after stages of an air compressor are cooled by indirect heat exchange with LNG which is thereby warmed or vaporized.
Abstract:
An integrated process for the production of fuels from tar sands in which bitumen is recovered from the tar sand by a hot-water separation step, recovered bitumen is converted in a hydroconversion step to gaseous and liquid fuels, carbonaceous residue from the bitumen conversion step is gasified with oxygen to produce synthesis gas, hot synthesis gas from the gasification step is water washed, hot water from the water wash step provides hot water for the separation step, and synthesis gas from the gasification step provides hydrogen for the bitumen conversion step. Soot recovered from the synthesis gas in the water wash step is transferred to the bitumen in the separation step and ultimately consumed in the process. Water contaminants from the tar sand separation step are largely eliminated in the gasification step.