Alstom Technology Limited

General Electric Technology Gmbh

George D Mylchreest

Glen Jukkola

Bard C Teigen

Jean-Claude Semedard

Xinsheng Lou

Richard E Waryasz

Armand A Levasseur

John H Chiu

Pierre Gauville

Carl H Neuschaefer

John E Ferguson

Lawrence H Gatton, Jr

Robert V Jacobs

Laurie Ferguson

Glen D Jukkola

In a method for operating a steam generator, a transport reactor is provided. Only a substantially pure oxygen feed stream is introduced into the transport reactor in an amount sufficient to maintain the transport reactor at or above a specific system load. The specific load is the system load when only the substantially pure oxygen feed stream is provided to the transport reactor at a minimum flow velocity for operating the transport reactor. A fuel is combusted in the presence of the substantially pure oxygen feed stream to produce a flue gas, which contains solid material. The solid material is separated from the flue gas and passed to a heat exchanger. The heat exchange may be one of a moving bed heat exchanger or a fluidized bed heat exchanger. The solid material is directed to the transport reactor to contribute to the combustion process.

Oxygen fired steam generator

A cyclone separator that collects entrained solid particles from a gas stream, comprising a cylindrical body, an inlet duct connected to the body, and a gas outlet tube connected to the body at its upper end. The ratio of the distance between the parallel to a face dropped from the tip of the cyclone separator and the closest point of the gas outlet tube to the internal diameter of the body is at least 0.1, as measured at the lower extremity of the gas outlet tube. The ratio of the inlet duct area, measured at the tip of the cyclone separator and perpendicularly to the face, to the cross-sectional area of the body, is between 0.24 and 0.32. The ratio of the height of the inlet duct to the width of the inlet duct at the tip of the cyclone separator does not exceed 4.

Cyclone separator

A moving bed heat exchanger () includes a vessel having an upper portion (), a lower portion () with a floor () including a discharge opening therein, and an intermediate portion (). The vessel directs a gravity flow of hot ash particles () received thereby from the upper portion () through the intermediate portion () to the floor () of the lower portion () of the vessel, where the hot ash particles () are collected. Tubes in the intermediate portion () of the vessel direct a flow of working fluid in a direction substantially orthogonal to the direction of the gravity flow of the hot ash particles () through the intermediate portion () of the vessel such that heat from the hot ash particles () is transferred to the working fluid thereby cooling the hot ash particles ().

Moving bed heat exchanger for circulating fluidized bed boiler

A system for optimizing and controlling a circulating fluidized bed combustion (FBC) system () and an air pollution control (APC) system () includes a controller () and an optimizer (). The controller () is connected to the FBC system () and/or the APC system (). The optimizer () is connected to the controller (). The optimizer () provides an optimized setpoint () to the controller () based on an economic parameter () and system outputs () from the FBC system () and the APC system (). The controller () provides an optimized input () to the FBC system () and/or the APC system () based on the optimized setpoint () from the optimizer () to optimize operation of the FBC system () and/or the APC system ().

Modeling and control optimization system for integrated fluidized bed combustion process and air pollution control system

A circulating fluidized bed power plantincludes; a circulating fluidized bed boilerwhich generates flue gases, a flash dry absorber scrubberconfigured to receive the flue gases from the circulating fluidized bed boiler, and a lime feedconfigured to introduce lime into the flash dry absorber scrubber

Circulating fluidized bed power plant having integrated sulfur dioxide scrubber system with lime feed

A system for removing sulfur dioxide (SO) from SOladen flue gas resulting from the burning of fossil fuel, includes an absorber and first and second separators. The absorber captures SOfrom a flow of the SOladen flue gas with a sorbent. The first separator separates a first portion of the sorbent with captured SOboth from a second portion of the sorbent with captured SOand from the flue gas. The second separator separates the second portion of sorbent from the flue gas.

Growing community of inventors

Simsbury, CT, United States of America

George D Mylchreest