Other

Anthony-ross Company

Clyde Bergemann Gmbh

Sullivan, Higgins & Brion Ppe LLC

Daniel Richard Higgins

Eugene Sullivan

Robert B Hill

Kenneth A Pingel

Michael J Kranda

Clayton J Abel

Mark Robbin Brown

Greg Watson

Mohomed Ishaq Jameel

A pneumatic linear actuator with a manually adjustable stop mechanism integrated into the device such that the actuator mechanism and the stop mechanism are co-linear. The stop mechanism limits the travel of the actuator by turning a handwheel. The mechanisms are completely sealed and/or enclosed and a gear-reduction position indicator is included. Forward and reverse acting variations are presented.

Apparatus and method of fluid powered linear actuators with adjustable stops

A chemical recovery boilers is described in which the primary air system is reconfigured to provide aggressive charbed control and improved combustion in the lower furnace. The fewest number of primary air ports are used on two opposing walls to generate powerful air jets that penetrate across the boiler providing physical and thermal stability to the charbed while increasing the heat release and combustion stability in the lower furnace, increasing reduction efficiency, and lowering carryover and emissions. Various embodiments are described including operating strategies and multi-level black liquor injection.

Method and apparatus for improved operation of chemical recovery boilers

A ground supported power boiler is described combining a refractory lined and insulated conical floor; an insulated cylindrical combustion chamber; a cylindrical furnace with water tube wall; a rectangular convective section; a single vertical steam drum; tangential injection of the fuel and combustion air; means for fluidizing the fuel bed; means for selectively stripping particulates from the flue gases; multi-stage particulate stripping and filtering from flue gases, means for using the walls of steam drum as steam/water droplet separator, means for recirculating and capturing heat from the flue gases; means for pressurizing the interior of the boiler above atmospheric pressure; means for heating and drying fuel prior to feeding the fuel to the boiler; means for creating hydrogen shift reaction; means for eliminating any need for sootblowing; and designed to not require the use of an induced draft fan.

Solid fuel burning-furnace having a vertically mounted cylindrical combustion chamber

A ground supported single drum power boiler is described combining a refractory lined and insulated V-Cell floor; refractory lined and insulated combustion chamber; integrated fuel chutes configured to pre-dry wet solid fuel; top mounted fuel bin; internal chamber walls; configurable combustion air systems; and a back pass with after-burner ports and cross flow superheaters. The boiler can be configured in pre-assembled modules to minimize the field construction time and cost. An alternative embodiment is adaptable as a gasifier.

Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification

A solid fuel boiler with one or more fuel chutes configured to pre-dry wet solid fuel prior to loading into a combustion chamber of the boiler, enabling higher thermal efficiencies and burning less fuel to produce the same steam quantity. The pre-drying fuel chutes pass through the boiler where hot combustion gases radiantly and convectively&#x2014;heat the chute walls to dry the wet solid fuel by radiant, convective, and/or conductive heating. Agitator mechanisms or structures within the chute mix the fuel for uniform heating, break up clumps of wet fuel, regulate the speed of falling fuel, prevent sticking, dry the fuel by means of steam and/or hot air, transport and deliver a cooling medium while a chute is offline in an operating boiler, and suppress fire using steam injection. Fuel from the chute can flow into a fuel storage bin or directly into the combustion zone of the furnace.

Combustion boiler with pre-drying fuel chute

Power boiler having vertically mounted cylindrical combustion chamber

A design and method of operation for the floor of solid fuel boilers is described. The combustion region includes a stepped-floor that improves combustion in the lower furnace. In some embodiments, the fuel is moved between the steps of the floor by a gas, rather than by mechanical means, and the fuel is moved from an upper to a lower step as it is burned. In some embodiments, the steps are fixed steps having a layer of a refractory material.

Stepped floor for solid fuel boilers

Tile for a solid fuel boiler

A system for drying solid fuels prior to injection and burning in solid fuel boilers is described. High moisture content solid fuels such as bark, sludge, wet coal, are preferably dried to some degree before they can burn. The present invention incorporates a delivery chute in which combustion gases dry the solid fuel before it reaches the combustion chamber of the boiler. In one embodiment, the combustion gases are drawn through the delivery chute to remove moisture from the incoming fuel and then the gases flow back into the boiler. A second embodiment directly exposes the wet fuel to the combustion in the boiler for a sufficient time to remove a substantial amount of moisture before the fuel is spread onto the solid fuel combustion region.

Method and apparatus for drying solid fuels

An improved apparatus for cleaning linearly translating rods is described. Embodiments of the invention are suitable for use where a rod, such as a cleaning rod, is moved linearly through a stationary support, generally a cylindrical tube, such as a pneumatic cylinder, with bushings fixed inside the tube through which the rod slides. Preferred embodiments of the present invention allow the rod scraper to be attached or removed without disassembling the complete hydraulic cylinder rod apparatus. Preferred embodiments of the present invention also allow the rod scraper to float radially while its motion is constrained axially. This allows the invention to compensate for lateral displacement of a translating cylindrical cleaning rod due to normal working clearances between the cleaning rod and bushings or by bushing wear over time.

Rod scraper

Stepped tile floor for a solid fuel boiler

A combustion air system for a recovery boiler is described in which multiple levels of secondary and tertiary combustion air ports each have an even number of ports, with the ports on opposing walls interlaced. The air system lends itself equally well to front/rear wall or sidewall applications and is especially beneficial for rectangular boilers. The air system features large and small-scale horizontal circulation zones superimposed on each other and the ability to adjust the angle of the air jets. Additional features include port dampers for the starting burners and system control based on kinetic energy.

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Tigard, OR, United States of America

Daniel Richard Higgins