Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Reexamination Certificate
2008-09-25
2009-06-09
Rodriguez, William H (Department: 3741)
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
C060S039461, C060S783000
Reexamination Certificate
active
07543438
ABSTRACT:
A gas turbine topping device, which is disposed upstream of a steam-raising section, is used for generating power in the manufacture of sulphuric acid. A sulfur-burning combustor generates hot sulfur dioxide while a pressure-exchanging ejector mixes the hot combustion gases with a cooler gas (e.g. pressurized air, pressurized N2or recycled sulfur dioxide (SO2) to form a mixed working gas having a temperature below the maximum allowable temperature (metallurgical limit) of the blades of the turbine. The turbine drives an oxygen compressor which supplies oxygen to a bubbling chamber which also receives S8to produce sulfur vapor for combustion. By using stoichiometric quantities, sulfur dioxide is delivered in requisite quantities to a sulfuric acid plant without any harmful emissions. Useful amounts of electrical power can thus be generated by the gas turbine topping device as well as the downstream steam turbine by harnessing the enormous amount of waste heat involved in the manufacture of sulfuric acid.
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Harman et al. Gas turbine topping for increased energy recovery in sulfuric acid manufacture, Applied Energy (3) 1997 Applied Science Publisher Ltd. England, 1997.
Rodriguez William H
Sonnenschein Nath & Rosenthal LLP
LandOfFree
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