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7621237 |
Economizer for a steam generator
An economizer for a heat recovery steam generator utilized to improve the efficiency of the Rankine cycle by preheating the water that flows to the evaporator section. The economizer multi-pass...
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7587995 |
Radiant syngas cooler
A radiant syngas cooler used to contain and cool the synthesis gas produced by coal gasification processes employs radiant and convection surfaces in a specific arrangement to achieve a...
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7587994 |
Arrangement in recovery boiler
The invention relates to an arrangement in a recovery boiler into which spent liquor to be incinerated and combustion air are supplied, the arrangement comprising superheaters ( 4 a - 4 d ) in the...
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7552701 |
Boiler for making super heated steam and its use
A boiler for making super heated steam by indirect heat exchange of water against a hot gas, said boiler being a vertically oriented vessel comprising a spirally formed conduit around the vertical...
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7549400 |
Method of heating boiler process feed streams
A method of heating process streams fed to a boiler incorporating an oxygen transport membrane device that includes an oxygen-containing stream and a boiler feed water stream. The membrane device...
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7478524 |
Coal fired power generation plant
A power generation plant includes a conventional steam turbo train, a high temperature turbo train, and a coal fired boiler ( 1 ) with a fluidized bed combustor. The high temperature turbo train is...
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7475645 |
Retractable liquor gun holder for a recovery furnace
A liquor gun holder for a recovery furnace includes a rail assembly, a carriage assembly moveably mounted onto the rail assembly such that the carriage assembly is moveable longitudinally along the...
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7434543 |
Arrangement in recovery boiler
The invention relates to an arrangement in a recovery boiler, into which spent liquor to be combusted and combustion air are fed, the arrangement comprising superheaters in the upper part of the...
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7412945 |
Waste heat boiler
A waste heat boiler includes an axial bypass pipe and multiple heat transfer pipes disposed within a cylindrical jacket. A hot exhaust gas stream transported between inlet and outlet ends of the...
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7331312 |
Waste heat recovery apparatus and method for boiler system
An apparatus and method for recovery of waste heat in a boiler system, wherein heat from the hot condensate water in the system, which otherwise would be lost through dissipation, is used for other...
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7322317 |
Heat-recovery boiler
The invention relates to a heat-recovery boiler ( 3 ) consisting of a tube bundle heat exchanger ( 7 ) which is incorporated into a pressure vessel ( 2 ) downstream of a gasification device....
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7296542 |
Device for introducing hot gas into a heating surface pipe of a waste heat boiler
A device for introducing hot gas into a heating surface tube of a waste heat boiler having an outer tube connected to the boiler wall, in particular to the tube plate, has an inner or inlet tube...
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7275503 |
Heat transfer tube panel module and method of constructing exhaust heat recovery boiler using the module
A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules ( 20 ) are produced in an appropriate size according to design specifications...
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7270086 |
Steam generator
A stream generator wherein a continuous evaporating heating surface is disposed in a heating gas duct through which a heating gas flows in an approximately horizontal manner. The continuous...
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7243619 |
Dual pressure recovery boiler
A dual pressure boiler system has a bottom furnace that operates as a low pressure natural circulation steam generating system and a top furnace that operates as a high pressure natural circulation...
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7243618 |
Steam generator with hybrid circulation
A hybrid vapor generator has at least one evaporator with tubes arranged in sections, one section including a natural circulation loop with a separating drum and downcomer(s), and another section...
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7204966 |
Method and apparatus for improved fired heaters
A fired heater is adapted for increasing the output of a plant where the furnace capacity is considerably improved without corresponding increase in the pressure drop. The described technique...
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7100356 |
Heat recovery apparatus with aerodynamic diffusers
A sound attenuating duct unit suitable for connection to an outlet of a gas turbine and an improved heat recovery apparatus for use with such a turbine are disclosed. The former unit includes a...
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7055465 |
Water heater having waste gas disposal structure
A water heater includes a housing, an air box, two windproof hoods, and a catalyst converter. Thus, the catalyst converter converts the carbon monoxide produced during the combustion process of the...
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7036461 |
Waste-heat boiler for a Clause plant
The invention relates to a waste-heat boiler ( 3 ) for a Claus plant, comprising a steam generation chamber that is surrounded by a pressure-proof jacket ( 14 ), a long tube bundle ( 18 ) of heat...
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7033420 |
Process and apparatus for the thermal degassing of the working medium of a two-phase process
A process is disclosed for thermally degassing a condensate or feedwater by heating the condensate or feedwater in a feedwater vessel/degassing means, to which preheated condensate is fed and from...
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7021248 |
Passive system for optimal NOx reduction via selective catalytic reduction with variable boiler load
A passive system for recovering energy and nitrogen oxides from flue gas produced by a boiler, and which employs a particular arrangement of economizer surface to ensure that the temperature of the...
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7017529 |
Boiler system and method of controlling a boiler system
A boiler system including a first manifold, a second manifold provided at an elevation above the first manifold, and a heat exchanger conduit fluidly connecting the first and second manifolds. The...
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6990930 |
Steam generation apparatus and method
In one aspect, the invention provides a steam generation apparatus that is liquid fuel fired and addresses conversion of gaseous fuel SIB units to operate with liquid fuel. The invention also...
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6957630 |
Flexible assembly of once-through evaporation for horizontal heat recovery steam generator
A steam generator is disclosed herein. The steam generator includes an inlet manifold, a discharge manifold, a heating gas duct, and at least one once-through heating area in the heating-gas duct....
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6907845 |
Boiler improvements with oxygen-enriched combustion for increased efficiency and reduced emissions
A method and apparatus to conduct 0 2 /CO 2 combustion or oxygen-enriched combustion. The boiler exhaust gas passes through a Gas Primer Sector (GPS) combined with the boiler to effect heat...
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6880492 |
Device for introducing hot gas into a heating surface pipe of a waste heat boiler
A device for introducing hot gas into a heating surface pipe of a waste heat boiler includes an outer pipe that is connected to the boiler wall, preferably to the bottom of the pipe. The device...
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6874449 |
Black liquor gun
The invention relates to a black liquor gun ( 4 ) for feeding black liquor into a recovery boiler ( 1 ), comprising a nozzle ( 11 ) to be inserted into a furnace ( 2 ). Inside the black liquor gun...
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6799539 |
System and method for utilization of waste heat of semiconductor equipment and heat exchanger used for utilization of waste heat of semiconductor equipment
An amount of energy consumption in a semiconductor fabrication facility can be reduced by using cooling water drained from a semiconductor fabrication apparatus as a heat source of another...
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6799538 |
Heating apparatus using useless heat for reducing oil
An environmentally-friendly heating apparatus which can collect and recover heat of exhaust gas discharged from a boiler in order to use the heat for heating an indoor space. The heating apparatus...
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6758168 |
Method and apparatus for sootblowing recovery boiler
A method and apparatus for sootblowing a recovery boiler. Sootblowers of the recovery boiler are divided into sootblowing groups, and a sootblowing interval is determined for the sootblowers. A...
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6715450 |
Fossil-fuel fired continuous-flow steam generator
A continuous-flow steam generator includes a combustion chamber with evaporator tubes for fossil fuel. The combustion chamber is followed on the fuel-gas side, via a horizontal gas flue, by a...
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6672259 |
Method for positioning superheaters in biomass burning steam generators, and steam generator
A method for positioning superheaters ( 2, 3, 4, 5 ) in biomass burning steam generators, and a steam generator. The steam generator comprises a combustion chamber ( 1 ), a flue gas duct ( 6 ), a...
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6672255 |
Flue gas energy transfer system
A flue gas energy transfer system for increasing the efficiency of hot-water and/or steam boiler. They system utilizes an arrangement of heat transfer ducts with damper elements for the selective...
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6662758 |
Condensing gas boiler for recollecting condensed latent heat using uptrend combustion
A condensing gas boiler, which recollects condensed latent heat by uptrend combustion, is provided. Latent heat exchangers are disposed in the same area as that of a combustion chamber, and...
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6609482 |
Method in a soda recovery boiler, and a soda recovery boiler
In a soda recovery boiler, flue gases are led through a so-called economizer ( 3 ) to recover heat from flue gases. The flue gases are cooled in the last stage ( 3 b ) of the economizer ( 3 ) with...
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6578529 |
Arrangement for feeding black liquor into a recovery boiler
The present invention relates to an arrangement for introducing black liquor into a furnace of a recovery boiler, said arrangement comprising an elongated tube having an interior surface and an...
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6557500 |
Evaporator and evaporative process for generating saturated steam
An evaporator in a steam generator extracts heat from high temperature gases to convert heated water into saturated steam. The evaporator includes two sections—a once-through section and a...
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6557499 |
Fossil-fuel-fired once-through steam generator
The steam generator has a combustion chamber for fossil fuel. A vertical gas flue is arranged downstream of the combustion chamber on a heating-gas side and connected via a horizontal gas flue. The...
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6536203 |
Gas turbine installation
A boiler installation supporting frame structure supported by a supporting structural body and a gas turbine frame base are constituted integrally, and a gas turbine device is disposed at upper...
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6508206 |
Feed water heater
A feedwater heater for a steam generator or heat recovery boiler or waste heat boiler through which hot gases pass includes two sections which are located side by side so that the temperature of...
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6497199 |
Catalytic combustion heat exchanger
A catalytic combustion heater having, in a fuel gas flow passage in which an inflammable gas- and combustion support gas-containing fuel gas flows, tubes in which an object fluid to be heater...
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6484799 |
Control system for movable heat recovery coils
A method and apparatus for controlling heat recovery coils in an exhaust stack. A set of heat recovery coils at least partially filled with a heat conducting fluid is positioned in a hot zone. The...
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6470835 |
Plate-type heat exchanger for exhaust gas heat recovery
An exhaust gas heat recuperation system for use with a boiler is disclosed. The heat recuperation system includes a plate-type heat exchanger for exhaust gas heat recovery for exchanging heat...
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6470834 |
Method and device for exploiting heat in combustion gases
The invention relates to a method and a device for utilizing the heat of flue gases from combustion apparatus while simultaneously removing condensable elements from the flue gases and reducing the...
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6460490 |
Flow control system for a forced recirculation boiler
A forced-recirculation boiler (FRB) type of heat-recovery steam generator is applied to a ship-propulsion application of the recuperative dual-fluid engine. Such boilers generally include an...
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6453852 |
Temperature stratified superheater and duct burner
A heat recovery system includes an upstream superheater section and a duct burner arranged to provide improved performance. The upstream superheater section and duct burner are arranged to reduce...
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6435139 |
Waste heat boiler for cooling hot syngas
A waste heat boiler for cooling hot syngas in heat exchange with water under boiling pressure, consists of an outer pressure shell ( 1 ) having a water space ( 2 ) filled with boiling water up to a...
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6435138 |
Exhaust heat recovery boiler
An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust...
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6430914 |
Combined cycle power generation plant and method of operating such a plant
A combined cycle power generation plant includes a boiler for producing steam, the boiler including a furnace for combusting first fuel to produce flue gas, a back-pass for receiving the produced...
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