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| Number | Title | Issue Date |
| 7185594 | Method and apparatus for improving combustion in recovery boilers 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 ... | 03/06/2007 |
| 7017500 | Monitoring of fuel on a grate fired boiler Method and apparatus for sensing the overall and/or distribution of fuel weight disposed on the top surface of the grate of a grate-fired device and adjusting the fuel infeed as a function of the flow rate of steam generated by the boiler. A plurality of weight sens... | 03/28/2006 |
| 5461990 | Mounting and linkage system for burners in a furnace A mounting and linkage system for mounting an air or air-fuel discharge device for pivotal and axial movement relative to a furnace in a manner so that the device is isolated from the walls of the furnace. The system includes a linkage apparatus extending... | 10/31/1995 |
| 5261337 | Combustion control method of refuse incinerator The present invention aims for the object thereof at preventing unburnt gas and noxious gas components from being generated in a refuse incinerator, and provides a combustion control method by which it is arranged so that a feeder (2) and a stoker (3) are... | 11/16/1993 |
| 5027751 | Method and apparatus for optimized boiler operation Boiler operations are fine tuned to minimize thermodynamic losses and pressure losses across throttle valves at the output of a boiler. Whenever the boiler is operating outside of desired operating levels, the first action considered is to reduce spray fl... | 07/02/1991 |
| 4928604 | Control system for pulverized coal fired boiler A control system for a pulverized coal fired boiler provided with a pulverized coal producing equipment including a coal feeding section, a milling section and a classifying section and an adjuster for adjusting a coaling rate thereof, and a pulverized co... | 05/29/1990 |
| 4851013 | Gasification process A process for monitoring the conditions in the reaction zone of a gasifier in a process for the gasification of coal to produce synthesis gas is disclosed, the process being characterized by continual or periodic calculation of the rate of steam productio... | 07/25/1989 |
| 4800846 | Method of controlling a fluidized bed boiler A fluidized bed boiler is controlled such that, when the fuel supply quantity thereof is changed from F0 to F1, the fuel supply quantity is changed to a level greater than the difference between F1 and F0, the f... | 01/31/1989 |
| 4779795 | Convector room heater incorporating a hot water boiler According to the present invention there is provided a boiler comprising a firebox, a control device controlling the flow of air into the firebox, a water jacket surrounding at least part of the firebox, a sensor to sense the temperature of the water in o... | 10/25/1988 |
| 4715301 | Low excess air tangential firing system A furnace (10) in which pulverized coal is burned in suspension. The coal is introduced along with primary air, tangent to an imaginary circle (42). The auxiliary air is introduced tangent to an imaginary circle (44) directly above the primary air, in a d... | 12/29/1987 |
| 4707991 | Multiple reactor cyclic velox boiler plant A dual or multiple combustion chamber is described for use with cyclic velox boiler plants wherein one or more inner reactors are fastened inside one or more of the combustion containers of the cyclic velox boiler. These inner reactors are filled with and... | 11/24/1987 |
| 4622922 | Combustion control method A combustion control method wherein manipulated variables or the amounts of fuel and air in at least one combustion zone of a boiler are regulated so that both the amount of nitrogen oxides and the amount of unburned coal in the ash at an outlet of a burn... | 11/18/1986 |
| 4621583 | System for controlling a bark-fired boiler A system and process for controlling a boiler is disclosed. The system includes a television camera mounted above the reciprocable grate of the boiler to locate craters in solid fuel on the grate and an actuator to vary an operating parameter of the furna... | 11/11/1986 |
| 4598670 | Solid fuel feed system for a boiler A solid fuel feed system for a boiler in which a hopper is provided for storing the fuel and a discharge conduit is provided for discharging the fuel to the boiler. A first conveyor belt system conveys the fuel from an inlet to the hopper and a second con... | 07/08/1986 |
| 4582026 | Feed-forward type automatic control system Disclosed is an automatic anticipatory control system for controlling, by one common control quantity, a plurality of points of operation that can be changed over individually and arbitrarily between start and stop operations and between an automatic oper... | 04/15/1986 |
| 4569311 | Method of firing a pulverized coal-fired furnace A pulverized coal-air stream or auxiliary air stream discharging into a furnace (1) from a delivery pipe (12) is deflected away from the longitudinal axis of the delivery pipe by directing a working fluid stream, preferably air or flue gas, against the co... | 02/11/1986 |
| 4499857 | Fluidized bed fuel burning Controlling a fluidized bed coal combustor by sensing certain variables and thereby controlling other variables.... | 02/19/1985 |
| 4455837 | Cyclic velox boiler A cyclic velox boiler is described wherein solid carbonaceous fuels are burned in pressure vessel containers by cyclic compression and expansion with air or with air and steam as usual gas reactants. During compression air is forced deeply into the pores ... | 06/26/1984 |
| 4434747 | Burner-tilt drive apparatus for a pulverized coal fired steam generator In a pulverized coal-fired steam generator having a generally vertical furnace (1) and a plurality of fuel-air admission assemblies (10) arrayed in a vertical windbox (40) in one or more walls of the furnace (1), at least one of the fuel-air admission ass... | 03/06/1984 |
| 4430963 | System for generating dry coal weight signal for coal feeder and control system based thereon A system for generating a dry coal weight signal is provided, wherein the moisture content of a coal feed to a solid fuel burner is determined, and the dry coal weight calculated on that basis. Moisture content is determined by measuring density of the co... | 02/14/1984 |
| 4362269 | Control system for a boiler and method therefor A method and system for controlling the combustion of, for example, coal or bark in a stoker boiler or black, liquor in a recovery boiler to provide operation at maximum efficiency. Control loops are provided for primary or undergrate air and secondary or... | 12/07/1982 |
| 4335683 | Fluidized bed heat exchanger with control to respond to changes in demand In a fluidized boiler system, the rate of fuel flow and bed depth are simultaneously controlled in response to variations in a load demand signal representing the need for steam output from the system. When the load demand changes, the rate of fuel flow i... | 06/22/1982 |
| 4332207 | Method of improving load response on coal-fired boilers A method for rapidly changing the amount of pulverized coal supplied to a coal-fired furnace (10) equipped with a coal pulverizer (20) from a first steady-state level to a second steady-state level in response to a change in operating load demand. The amo... | 06/01/1982 |
| 4311102 | Burning system An improved burning system for automatically controllably charging a wood-waste burning steam boiler utilizes a fuel bin unloader having a gravity fed screw metering device for feeding fuel into the system in response to steam demand and pollution output ... | 01/19/1982 |
| 4304196 | Apparatus for tilting low load coal nozzle In a pulverized coal-fired steam generator having a generally vertical furnace (1) and a plurality of fuel-air admission assemblies (10) arrayed in a vertical windbox (40) in one or more walls of the furnace (1), at least one of the fuel-air admission ass... | 12/08/1981 |
| 4278052 | Boiler control system A boiler control system for boilers fired by solid fuels wherein the fuels are carried through the combustion zone of the boiler on a traveling grate and wherein the air flow for combustion as supplied to the undergrate region utilizes a control of the fu... | 07/14/1981 |
| 4044727 | Apparatus for heating a heat transfer fluid protected against overheating In an apparatus for heating a heat transfer fluid flowing through concentrically arranged pipe coils in a boiler casing, the casing is supported on top of a furnace in which solid fuel is burned in the combustion chamber. The combustion gases flow directl... | 08/30/1977 |
