Abstract: A burner assembly combines oxygen and fuel to produce a flame. The burner assembly includes an oxygen supply tube adapted to receive a stream of oxygen and a fuel supply tube arranged to extend through the oxygen tube to convey a stream of fluidized, pulverized, solid fuel into a flame chamber. Oxygen flowing through the oxygen supply tube passes through oxygen-injection holes formed in the fuel supply tube and then mixes with fluidized, pulverized, solid fuel passing through the fuel supply tube to create an oxygen-fuel mixture in a downstream portion of the fuel supply tube. This mixture is discharged into the flame chamber and ignited in a flame chamber to produce a flame.

Abstract: Partial Stroke Testing (PST) equipment and methodologies provide PST data for one or more valves by withholding or applying power to the one or more valves for periodic time periods that increase by an incremental amount until the one or more valves partially stroke or a maximum test period expires.

Abstract: A burner assembly includes a fuel nozzle and an air-fuel mixing cone coupled to the fuel nozzle. Fuel is discharged from the fuel nozzle into a mixing chamber formed in the air-fuel mixing cone. Air passes into the mixing chamber through openings formed in the air-fuel mixing chamber and mixes with fuel to form a combustible air-fuel mixture in the air-fuel mixing chamber.

Abstract: A burner assembly includes a fuel nozzle and an air-fuel mixing cone coupled to the fuel nozzle. Fuel is discharged from the fuel nozzle into a mixing chamber formed in the air-fuel mixing cone. Air passes into the mixing chamber through openings formed in the air-fuel mixing chamber and mixes with fuel to form a combustible air-fuel mixture in the air-fuel mixing chamber.

Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.

Abstract: A burner assembly combines oxygen and fuel to produce a flame. The burner assembly includes an oxygen supply tube adapted to receive a stream of oxygen and a fuel supply tube arranged to extend through the oxygen tube to convey a stream of fluidized, pulverized, solid fuel into a flame chamber. Oxygen flowing through the oxygen supply tube passes through oxygen-injection holes formed in the fuel supply tube and then mixes with fluidized, pulverized, solid fuel passing through the fuel supply tube to create an oxygen-fuel mixture in a downstream portion of the fuel supply tube. This mixture is discharged into the flame chamber and ignited in a flame chamber to produce a flame.

Abstract: A burner (10, 210, 310, 410) including a fuel manifold (12, 212, 312, 412), perforated air-mixing plates (14, 16, 214, 218, 414) coupled to the fuel manifold to define a fuel-air mixing region (22, 473) therebetween above the fuel manifold, and unperforated air-deflector wings (24, 26, 216, 236, 428). Each unperforated air-deflector wing is coupled to one of the perforated air-mixing plates such that each unperforated air-deflector wing extends upwardly from and at an angle to the perforated air-mixing plate to which it is coupled.

Abstract: An oxygen-fuel combustion system combines oxygen and fuel to produce a flame. The system distributes oxygen to a stream of fluidized, pulverized, solid fuel at various sites before and after ignition. The system is operable to vary the concentration of oxygen in an oxygen-fuel mixture extant at those sites.

Abstract: A shut-off valve apparatus has a valve body and a valve member coupled to the valve body. The valve member is movable between a first position blocking material flow through the valve body and a second position permitting material flow through the valve body. A pneumatic actuator receives pressurized air to move the valve member from the first position to the second position. A pneumatic exhaust controller controls the flow of pressurized air into and out of the pneumatic actuator.

Abstract: A pneumatic exhaust controller for use with a source of pressurized air comprises a manifold having a first portal coupled to the source of pressurized air, a second portal, and an exhaust portal. Two manifold embodiments are disclosed. Two regulator embodiments that operate to close the exhaust portal in response to pressurized air from the air source being communicated through the first portal and that operate to pass pressurized air from the pressurized air source to the second portal are disclosed. The regulators are situated in chambers of respective manifolds. A solenoid valve is coupled to each of the manifolds and is operable to block and unblock pneumatic communication between the respective first portal and the associated second and exhaust portals.

Abstract: A burner (10, 210) is provided in accordance with the present invention that includes an outer tube (62), an inner tube (34) positioned to be within the inner tube (34), a power supply (38) coupled to the inner tube (34), and an ignitor pin (70) coupled to the outer tube (62). An insulator (16) is provided that separates the burner (10) from a natural gas supply (28). The natural gas supply (28) provides natural gas to a combustion zone (45) through the inner tube (34). An oxygen supply (58) provides oxygen to the combustion zone (45) through a gap (144) between inner and outer tubes (34, 62). A spark is created between the inner tube (34) and the ignitor pin (70) to ignite the natural gas and oxygen to create a flame (12).

Abstract: The burner system (17) includes a burner (28), an air/fuel supply, and a burner control (12) that includes a pair of valve assemblies (13,14) with a flow control (18) and two valve actuators (10,11). A position encoder (108) is rigidly connected to the flow control member (18) and generates valve position signals. Control modules (112 are programmed to drive and store calibration parameters specific to the position encoder (108). During operation, the control modules command positioning of the flow control member (18) and compare the position signals to the stored positions to determine correct valve position.

Abstract: An intelligent burner control apparatus is configured to control the flow rate of a fluid flowing from a fluid supply to a burner. The apparatus includes a flow controller, a flow regulator, and a flow monitor. The flow controller includes a sensor configured to measure the flow rate of the fluid. The flow controller is configured to determine a flow control signal based on a measured fluid flow rate. The flow regulator is configured to receive the flow control signal and includes a valve movable to control the flow rate of the fluid in response to the flow control signal. The flow monitor is configured to monitor a change in the position of the valve with respect to the measured fluid flow rate and to produce an alarm signal when the change in the position of the valve with respect to the measured fluid flow rate is outside of a predetermined threshold.

Abstract: A burner (10) for use in both high O2 environments and low O2 environments comprises an outer tube (24) and an inner tube (26). The outer tube (24) defines a flow passage (53) and includes an inlet portion (42), an outlet portion (46), and a nozzle portion (44) interconnecting the inlet portion (42) and outlet portion (46). The inlet portion (42) has a larger effective cross-sectional area than the outlet portion (46) so that air (20) or an air-and-fuel mixture (35) moving through nozzle portion (44) is accelerated. The inner tube (26) is positioned to lie in the flow passage (53) of the outer tube (24) and is formed to include fuel-injection holes (78) to conduct fuel (33) into the flow passage (53).

Abstract: A burner apparatus is provided in accordance with the present invention that includes a case coupled to an air supply and a nozzle positioned to lie in case and coupled to a fuel supply. Nozzle defines at least one air-flow cavity inside case. Nozzle is formed to include a fuel-distribution chamber and at least one fuel-discharge port to communicate fuel from fuel-distribution chamber into air passing from air supply through each air-flow cavity. Fuel) mixes with air in each air-flow cavity to produce a combustible air-and-fuel mixture therein which can be ignited to produce a flame in case.

Abstract: An intelligent burner control apparatus is provided for controlling the rate of air and fuel flow in a burner system from air and fuel supplies to a burner. The apparatus includes a peer-to-peer communication network including a plurality of network control modules that communicate with each other over the communication network. The apparatus further includes a brain module including one of said network control modules coupled to the communication network, air and fuel flow controllers including one of said network control modules coupled to the communication network, and air and fuel flow regulators including one of said network control modules coupled to the communication network. The brain module is configured to send air and fuel setpoint signals over the communication network to the air and fuel flow controllers.

Abstract: A nozzle mixing line burner includes a line-burner combustion chamber and a nozzle body coupled to the chamber. The nozzle body includes a first channel having a first inlet receiving air, a second inlet receiving fuel, an air and fuel mixing chamber communicating with the first and second inlets and for discharging an air and fuel mixture created within the air and fuel mixing chamber along a first flow path out from the nozzle body. The nozzle body further includes a first opening receiving air, a second opening receiving fuel, and an air and fuel combining chamber communicating with the first and second openings and an exit for discharging a second air and fuel mixture created in the air and fuel combining chamber along a second flow path out from the nozzle body. The second flow path intersects the first flow path at an impingement point in the combustion chamber to cause impingement of the mixtures carried along the first and second flow paths to create flame stability.

Abstract: A burner assembly combines air and fuel to produce a burn firing into a downstream tube. The assembly includes a funnel formed to include an inlet, an outlet, and an air and fuel mixing region therebetween. The funnel also includes a cylindrical intake end at the inlet and a conical side wall mating with the cylindrical intake end and converging from the cylindrical intake end toward the outlet to fire a burn initiated in the mixing region into a tube coupled to the outlet of the funnel. The assembly also includes a system for supplying a gaseous fuel to the mixing region in the funnel and a system for introducing combustion air into the mixing region through the inlet of the funnel. The combustion air mixes with the gaseous fuel in the mixing region to produce a combustible mixture.

Abstract: A burner assembly is provided for combining oxygen and fuel to produce a flame. The burner assembly includes a burner block formed to include a flame chamber having inlet and outlet openings, a bypass structure for conducting oxygen outside of the flame chamber to the outlet opening of the flame chamber and structure for discharging fuel into the flame chamber formed in the burner block.

Abstract: A burner assembly is provided for combining oxygen and fuel to produce a flame. The burner assembly includes a burner block formed to include a flame chamber having inlet and outlet openings, a bypass structure for conducting oxygen outside of the flame chamber to the outlet opening of the flame chamber and structure for discharging fuel into the flame chamber formed in the burner block.