Victor Saucedo, Ovidiu Marin: Real time optimization and control of oxygen enhanced boilers. American Air Liquide, Elwood Haynes, July 22, 2008: US07401577 (62 worldwide citation)

An oxygen enriched boiler having a burner subassembly and a steam subassembly is disclosed. The burner subassembly has a fuel inlet, an oxidant inlet, a combustion chamber, a flue gas composition detector and a flue gas outlet. The fuel inlet provides fuel to the combustion chamber, the oxidant inle ...

Larry J Ashton: Dual fuel boiler. Rheem Manufacturing Company, Konneker & Smith P C, June 14, 2005: US06904873 (57 worldwide citation)

A fuel-fired boiler having a supply fan for providing essentially all of its combustion air requirements and has a non-aspirating type burner section to an inlet portion of which pressure regulator apparatus is coupled, the pressure regulator apparatus having a predetermined pressure regulation sett ...

Edward M Smith, Richard C Cornelison: Waste heat recovery system. W R Grace & Co Conn, Steven T Trinker, October 24, 1989: US04875436 (44 worldwide citation)

There is provided a waste heat recovery system characterized by a boiler assembly including a heat recovery steam generator through which exhaust gas is flowed. The boiler assembly includes a high temperature steam tube heat exchanger, or superheater, and at a location downstream therefrom a water t ...

David P Welden: Dual regulator direct-fired steam generator. October 24, 2000: US06135063 (43 worldwide citation)

A direct-fired steam generator utilizes dual regulators for delivering combustible gas to a burner chamber. A first regulator is a constant pressure gas regulator. A second regulator is a variable pressure gas regulator. The variable pressure gas regulator utilizes a pressure feedback which is repre ...

Jack Haeflich: Combined heat recovery and emission control system. Energy Services, Prutzman Kalb Chilton & Alix, February 25, 1986: US04572110 (42 worldwide citation)

A gas turbine cogeneration plant having a combined heat recovery and emission control system with a first steam boiler having a bank of steam generating tubes upstream of a NOX emission reduction unit and second and third steam boilers having banks of steam generating tubes downstream of the NOX emi ...

Troxell K Snyder, Paul H Chase: Method and apparatus for controlling a gasifier. Combustion Engineering, Troxell K Snyder, December 25, 1984: US04489562 (42 worldwide citation)

Fuel and oxidant feed rates into a gasifier 202 are regulated by monitoring overall output 14 and comparing with a pre-selected setpoint valve 10. An overall load demand signal 50, responsive to this comparision is generated and used as an input to control 102 oxidant feed rate. The heating value of ...

Arkadiy M Gurevich: Steam generator with hybrid circulation. Camoriano and Associates, Theresa Fritz Camoriano, Guillermo Camoriano, July 17, 2007: US07243618 (37 worldwide citation)

A hybrid vapor generator has at least one evaporator with tubes arranged in sections, one section including a natural circulation loop with a separating drum and downcomer(s), and another section being a pump assisted once-through circulation section.

Yoshiharu Tanaka: Waste heat recovery system for an internal combustion engine. Mitsui Engineering & Shipbuilding, Armstrong Nikaido Marmelstein & Kubovcik, May 14, 1985: US04516403 (34 worldwide citation)

A feed water supply pump and a second control valve are provided in a water supply line system and a first control valve is provided at a second steam line. Further, a third control valve is provided at a hot water supply line. In this manner, the terminal temperature difference between the circulat ...

Wolfgang Koog, Frank E Guptill Jr: Synthesis gas cooler and waste heat boiler. Texaco Development, Carl G Ries, Robert A Kulason, Henry C Dearborn, March 22, 1983: US04377132 (34 worldwide citation)

A synthesis gas cooler has concentric water walls to provide for heat transfer to a fluid in the water wall tubes. The inner water wall is concentric with the cooler shell and has a gas tight inlet connection for introducing hot synthesis gas. The inlet is located at the top of the shell. The bottom ...

Michael A Pouchak, Paul Wacker: Multi-stage boiler staging and modulation control methods and controllers. Honeywell International, Crompton Seager & Tufte, October 26, 2010: US07819334 (33 worldwide citation)

Methods and devices for controlling multi-stage boiler systems. In one illustrative embodiment, the number of stages to be used is determined in a staging control sequence in response to a heating load, and in some cases, the individual stages are modulated to meet a heating load. In some embodiment ...