Alstom Technology Limited

Combustion Engineering, Inc.

General Electric Technology Gmbh

Alstom (schweiz) Ag

Raymond W Cournoyer

Carl Edberg

Richard C LaFlesh

Shin Gyoo Kang

John Iovino

James M Niziolek

David J Matteson

Raymond D MacWhinnie

Mark R Malo

Timothy Joseph Braun

Shin G Kang

Carl D Edberg

Thimothy Joseph Braun

Carl David Edberg

A method for more efficiently removing pollutant gases from flue gases of a solid-fueled steam generator includes storing a silo a carbonaceous sorbent in a powdered form; extracting a superheated steam from a superheated steam source; and reducing a temperature, pressure and moisture content of the superheated steam to provide a processed steam of a desired pressure, temperature and moisture content. The method further includes providing a sorbent mill receiving the carbonaceous sorbent and the processed steam, wherein the sorbent mill is operable to de-agglomerate and comminute the carbonaceous sorbent using the processed steam to provide a processed sorbent. Further the method includes injecting the processed sorbent into the flue gases at a desired location in the solid-fueled steam generator thereby adsorbing the pollutants therefrom; and collecting and thereby remove the carbonaceous sorbent from the flue gas fluidly downstream from the desired location.

Removal of mercury emissions

A system for removing gaseous pollutants, such as mercury from flue gases of a solid-fueled furnace (), includes a sorbent mill () that receives superheated steam and a sorbent (), such as activated carbon, in a partially agglomerated state, that processes the sorbent () by de-agglomerating and comminuting the sorbent (). An educator () transports the processed sorbent () to a distributor () that injects it into the flue gases at a contact location having a temperature between 500&#xb0; F. and 900&#xb0; F., whereupon the sorbent () adsorbs mercury from the flue gas. A particle collection device () removes the processed sorbent () having adsorbed mercury, from the flue gas.

A steam mill system for transport of powdered activated carbon (PAC) from a storage silo to a steam powered jet mill to produce milled sorbent for use in a coal-fired power plant flue gas for mercury control. More specifically, the present disclosure relates to a cyclone separator arranged in a PAC transport line prior to a steam powered jet mill for separation of PAC according to particle size for the purpose of achieving reductions in associated compressed air usage, operating costs and capital costs.

Steam mill system useful for mercury control

A gas pipe ignitor is provided which is operable to ignite a non-premixed air and fuel mixture and includes an air supply conduit which has an axis ASL, a supply end , and a flame end axially spaced from the supply end . The gas pipe ignitor also includes a fuel supply conduit extending axially interiorly within at least a portion of the air supply conduit and having an entrance end and an exit end . The gas pipe ignitor further includes two branch passages each communicated with the fuel supply conduit . The gas pipe ignitor also includes a deflector body disposed in the air supply conduit and is configured relative to the air supply conduit such that air flowing in the air supply conduit flows along a pass through passage PTP from upstream of the upstream most surface of the deflector body to downstream of the deflector body . The entrance end of the fuel supply conduit is disposed axially upstream of the upstream most surface of the deflector body . The exit end of the fuel supply conduit is disposed relative to the deflector body and the air supply conduit at a location FSE downstream of the upstream most surface of the deflector body such that fuel flowing in the fuel supply conduit from its entrance end to its exit end is isolated from contact with air in the air supply conduit until exiting the exit end of the fuel supply conduit . The exit end of each branch passage is radially spaced from the exit end of the fuel supply conduit . The gas pipe ignitor also includes an ignition element , as seen in FIG. for promoting the ignition of the fuel which has exited the branch passages

Gas pipe ignitor

The pressure pulsations caused by the flow patterns of flue gases entering a flue gas stack from a horizontal duct are eliminated or reduced by the installation of a partition plate in the stack opposite the inlet duct. This negates the adverse interaction of the two vortices in the stack formed by the entering flue gases and allows the vortices to travel independently up the stack.

Flue gas flow control

Growing community of inventors

Enfield, CT, United States of America

Raymond W Cournoyer