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8146540 |
Continuous steam generator
The invention relates to a continuous steam generator comprising a surrounding wall which forms a gas draught and whose lower section is configured from gas-tight evaporator tubes that are welded...
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8146341 |
Integrated gas turbine exhaust diffuser and heat recovery steam generation system
Systems and methods for integrating heat exchanger elements of HRSG systems with gas turbine exhaust diffusers are provided in the disclosed embodiments. The systems and methods may include...
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8136544 |
Sealing arrangement with a segmented seal and pressure relief
A sealing apparatus adapted for use in a pressure vessel such as a synthesis gas cooler. The sealing apparatus is of a segmented plate construction formed around an outer wall section of a conduit...
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8117995 |
Method of and an apparatus for protecting a heat exchanger and a steam boiler provided with an apparatus for protecting a heat exchanger
A method of protecting a heat exchanger that includes a flue gas cooler having plastic heat recovery tubes arranged on a counterflow principle in heat exchange connection with flue gases generated...
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8096268 |
Municipal solid waste fuel steam generator with waterwall furnace platens
A steam generator includes a furnace configured and adapted to generate a stream of furnace exit gases from the combustion of municipal solid waste fuel. At least one superheater is disposed within...
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8056316 |
Process for optimizing the energy of a combined heat and power generation site
The invention relates to a process for producing power, heat and steam employing: a cogeneration unit comprising: a gas turbine producing power and combustion gases anda heat recovery unit fed with...
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8002855 |
Uncooled protective slag discharge tube
A reactor is proposed for entrained flow gasification for operation with pulverized or liquid fuels, with an externally cooled draft tube protecting the slag discharge outlet. An outlet of the...
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7976803 |
Plant and process for removing carbon dioxide from gas streams
The present invention is based on the realization that the carbon dioxide component of industrial gas streams also containing steam can be processed so to utilize either as latent and/or sensible...
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7971559 |
Method for removing salt deposits in reformer waste heat boilers
The invention provides a method for removing salt deposits from waste heat boilers in a reformer train. The method includes the steps of producing a fluid stream which includes steam from a...
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7963257 |
Sustainable waste heat management system
A self-contained waste heat recovery system for a commercial oven provides circulating an energy source to an oven heating system. The oven heating system recovers heat from an oven stack or...
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7902416 |
Fluidized bed reactor with back-mixing for dehydrogenation of light paraffins
An improved process and system for the endothermic dehydrogenation of an alkane stream is described. The process and system of the present invention comprise a back-mixed fluidized bed reactor. The...
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7874140 |
Method of and power plant for generating power by oxyfuel combustion
A method of and a power plant for generating power by combusting carbonaceous fuel with substantially pure oxygen, and a method of modifying a process of generating power by combusting carbonaceous...
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7841304 |
Apparatus for steam heat recovery from multiple heat streams
Disclosed is an apparatus and process for recovering heat from multiple hot process streams without multiplying instrumentation. Each hot process stream is indirectly heat exchanged with a water...
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7806090 |
Boiler apparatus for combusting processed agriculture residues (PAR) and method
An apparatus that extracts energy from processed agriculture residue (PAR) such as dried distiller grains or rapeseed as a biomass fuel having about 12% by weight or less moisture combusted in a...
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7803216 |
Pressurized high-temperature gas cooler
A compact pressurized high-temperature gas cooler having superior heat exchange performance and excellent economical efficiency is provided. A return-flow structure is formed in which a flue...
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7784433 |
Heat exchanger for cooling reaction gas
A heat exchanger for cooling reaction gas, wherein the respective ends of heat exchanger tubes, through which the reaction gas flows, are inserted in a respective tube plate and are surrounded by a...
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7730854 |
Process for steam heat recovery from multiple heat streams
Disclosed is an apparatus and process for recovering heat from multiple hot process streams without multiplying instrumentation. Each hot process stream is indirectly heat exchanged with a water...
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7661376 |
System for producing energy at a pulp mill
A spent liquor recovery boiler system including a boiler having a water/steam circulation system with superheaters and a furnace for recovering energy and chemicals from spent liquor combusted...
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7628121 |
Apparatus and process for cooling hot gas
An apparatus for cooling hot gas comprises: (i) a vertical elongated vessel provided with a cooling medium compartment comprising in use a first cooling medium, an inlet to supply fresh first...
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7624707 |
Re-oriented over fire air ports for reduction of NOx production from pulverized coal-fired burners
An over fire air (OFA) port arrangement for a pulverized coal-fired boiler or furnace has at least one OFA port through each of the sidewalls for injecting OFA to increase residence time for each...
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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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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. Displacement...
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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 of...
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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 02/CO2 combustion or oxygen-enriched combustion. The boiler exhaust gas passes through a Gas Primer Sector (GPS) combined with the boiler to effect heat transfer...
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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 (4)...
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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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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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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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