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9039959 Cooling plate arrangement and method for installing cooling plates in a metallurgical furnace  
The present invention proposes a gap-filler insert (20) for use with cooling plates (12, 12′) for a metallurgical furnace, the cooling plates (12, 12′) having a front face (14, 14′) directed...
8786856 Method and apparatus for monitoring combustion properties in an interior of a boiler  
A method of monitoring combustion properties in an interior of a boiler of the type having walls comprising a plurality of parallel steam tubes separated by a metal membrane. First and second...
8555820 Boiler  
A boiler has a plurality of inner heat-transfer tubes which makes up an inner heat-transfer tube row, and a plurality of outer heat-transfer tubes which makes up an outer heat-transfer tube row....
8281750 Boiler furnace to avoid thermal NOx  
A boiler furnace avoids NOx and increases thermal efficiency with a small boiler. The boiler furnace has an outer water wall and an inner water wall with flared top and bottom portions.
7878157 Fossil-fuel heated continuous steam generator  
The invention relates to a fossil-energy heated continuous steam generator, whereby the at least one combustion chamber, viewed in the flow direction of the hot gases, is divided into at least two...
7832367 Furnace panel leak detection system  
A furnace panel leak monitoring and control system for fluid-cooled panels in high temperature industrial furnaces such as, for example, smelting furnaces, blast furnaces and electric arc...
7827941 Boiler  
To provide a boiler equipped with a water tube group performing heat recovery effectively and having expansion heating surfaces (fins or the like) of high durability, the present invention...
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...
7775182 Boiler  
Provided is a boiler equipped with a burner capable of realizing a reduction in emission of harmful substances using a liquid fuel such as kerosene or A-type heavy oil. A burner (20) is equipped...
7516719 Continuous steam generator  
A steam generator comprising a combustion chamber having funnel-shaped side walls in the bottom area thereof and an encircling wall formed from a plurality of steam generator pipes through which a...
7244400 Fluidized bed reactor system having an exhaust gas plenum  
An arrangement for directing exhaust gases from at least one particle separator of a circulating fluidized bed reactor system to a heat recovery section includes a gas plenum located above a...
6783726 Cooling element and method for manufacturing cooling elements  
A cooling element designed particularly for furnaces, said element comprising a housing (1) mainly made of copper, and a channel system (6) provided in the housing for cooling medium circulation....
6718915 Horizontal spiral tube boiler convection pass enclosure design  
A convection pass enclosure for a boiler comprising a front wall having a gas inlet for receiving gases from the boiler; right and left side walls connected to the front wall; a rear wall having a...
6651596 Continous flow steam generator having a double-flue construction  
A continuous flow steam generator with a double-flue construction has a vertical gas flue with an ascending conduction of fuel gas. The combustion chamber rear wall is inclined inwards and towards...
6640753 Steam generator of a water-tube type  
A steam generator of water-tubes type for burn fossil fuel where instead of the convective heat transfer of the present day boilers, the water-tubes are heated by means of the mechanism of heat...
6591790 Fire-resistant structural body supporting metal bar for protection of water pipe  
A support fitting for the heat-resistant block to protect boiler tubes, which protrudes upward at a right angle from the surface of the rib between two boiler tubes, and which is welded on the rib...
6536380 Fossil-fuel heated steam generator, comprising dentrification device for heating gas  
A steam generator has a nitrogen removal device for fuel gas and a combustion chamber, which is followed on the fuel-gas side, via a horizontal gas flue and a vertical gas flue, by a nitrogen...
6499440 Fossil-fired steam generator  
A steam generator has a combustion chamber which is configured for an approximately horizontal main direction of flow of the fuel gas and which is followed on the fuel-gas side, via a horizontal...
6481386 Fossil-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 by a vertical gas flue through a...
6446584 Fossil-fuel-fired steam generator  
A steam generator has an especially simple structural concept of a combustion chamber for a predetermined output range and for various qualities of different fossil fuels. The steam generator...
6446580 Fossil fuel-fired continuous-flow steam generator  
The fossil fuel fired continuous-flow steam generator has a gas turbine combustion chamber for fossil combustibles. On the heating gas side a vertical gas extractor is mounted downstream of a...
6427637 Steam generator with at least partially double-walled evaporation tank  
The invention relates to a steam generator comprising an evaporation tank and several heating elements (2). The evaporation tank consists of an evaporation vessel (1) and a removable limescale...
6336429 Drumless natural circulation boiler  
A drumless natural circulation boiler system has a furnace enclosure with wall tubes and upper and lower headers connected to respective upper and lower ends of the wall tubes. At least one...
6318305 Water-tube boiler  
The invention provides a water-tube boiler which allows further NOx reduction and CO reduction with a simple construction of the boiler body and the burner itself. The water-tube boiler includes a...
6302194 Pipe with ribs on its inner surface forming a multiple thread and steam generator for using the pipe  
A pipe includes a pipe wall having an inner wall surface. Ribs are disposed on the inner wall surface forming a multiple thread. The ribs define a mean inside pipe diameter and the ribs have a...
6269782 Water-tube boiler  
Boiler efficiency is further improved and the whole boiler body is slimmed down by totally improving heat transfer surfaces confronting gas flow passages, i.e., by forming the heat transfer...
6253715 Water-tube boiler  
A water-tube boiler which allows further NOx reduction and CO reduction to be implemented with an uncomplicated construction of the boiler body itself, and which is improved in boiler efficiency....
6250257 Method for operating a once-through steam generator and once-through steam generator for carrying out the method  
A once-through steam generator having a combustion chamber. A containing wall of the combustion chamber is formed from vertically disposed evaporator tubes welded to one another in a gas-tight...
6213059 Technique for cooling furnace walls in a multi-component working fluid power generation system  
A technique for cooling furnace walls in a multi-component working fluid power generation system is disclosed. In a first embodiment, the technique involves removing process heat from a furnace...
6205634 Furnace floor  
An improved floor for a recovery boiler furnace having a flat floor has a number of tubes in the floor immediately adjacent each of the sidewalls of the furnace oriented at an oblique angle to...
6178898 Recovery boiler  
In a recovery boiler for burning spent liquor of a pulp mill, a combustion chamber has heat transfer walls formed of tubes, at least one vertical heat transfer surface formed of tubes, and...
6116196 Water-tube boiler  
In a water-tube boiler in which pollutant (especially NOx) emissions are reduced, a plurality of water tubes arranged in an annular shape are provided. At least some of the water tubes thereof are...
6095096 Integrated boiler burner with balanced heat flux  
A package boiler having water cooled surfaces positioned relatively close to the combustion burner to improve the radiant heat transfer. Extended surfaces are added to the water cooled tube...
6092490 Heat recovery steam generator  
The water flow circuit for a heat recovery steam generator is a hybrid system which combines a circulating drum type circuit and a once-through circuit. A low pressure evaporator is designed for...
6058893 Buckstay corner assembly with buckstay extension plates for a boiler  
A buckstay system of an associated furnace having a combustion cavity with a front waterwall, a rear waterwall, and opposed left and right side waterwalls joining the front and rear waterwalls and...
6041854 Water cooled panel  
A water cooled panel (1), e.g. for metallurgical use, is constructed from a plurality of rectangular hollow section tube lengths (2), with adjacent tube lengths oriented corner-to-corner in a...
6021724 Cyclone furnace for retrofit applications  
An improved Cyclone furnace particularly suitable for retrofit applications to an existing boiler incorporates a Cyclone furnace and an integrated de-slagging chamber as a single manufactured...
6019068 Method and apparatus for injection of NOx reducing agent  
An apparatus for reducing the concentration of nitrogen oxides in flue gases produced in a furnace of a combustion unit includes a device for maintaining combustion reactions in the furnace, the...
5979369 Once-through steam generator having spirally disposed evaporator tubes  
A once-through steam generator includes a gas flue formed of steam generator tubes welded to one another in a gas-tight manner through fins. The steam generator tubes are connected in parallel for...
5979370 Continuous-flow steam generator  
A continuous-flow steam generator includes a combustion chamber of rectangular cross-section and combustion-chamber walls each having essentially vertically disposed evaporator tubes through which...
5967097 Once-through steam generator and a method of configuring a once-through steam generator  
The combustion chamber of a once-through steam generator is formed with walls of vertical tubes through which a flow medium flows from the bottom upwards. The tubes have a surface structure on...
5934227 Variable pressure once-through steam generator upper furnace having non-split flow circuitry  
A once-through steam generator having single pass non-split fluid flow upper furnace circuitry with a one to one connection of tubes of the lower furnace spiral or vertical tube assembly being...
5901669 Variable pressure once-through steam generator upper furnace having non-split flow circuitry  
A once-through steam generator having single pass non-split fluid flow upper furnace circuitry with a one to one connection of tubes of the lower furnace spiral or vertical tube assembly being...
5865149 Buckstay corner assembly with buckstay extension plates for a boiler  
A buckstay system of an associated furnace having a combustion cavity with a front waterwall, a rear waterwall, and opposed left and right side waterwalls joining the front and rear waterwalls and...
5845610 Refractory protective blocks and protective wall structure of boiler using same  
A refractory protective block protects heat exchange means connecting tubes to fins. The refractory protective block has an inside complementary shape corresponding to the surface shape of the...
5824275 Secondary and tertiary air nozzle for furnace apparatus  
An air nozzle assembly for use in associated combustion apparatus which includes a first elongated housing having first and second axial extremities. The first axial extremity thereof is open to...
5791299 Small once-through boiler  
A small once-through boiler can avoid burning caused due to excessive heating of water pipes and burning around a fire hole of a burner in particular and heighten the heat load of a combustion...
5775265 Cooling surface cladding  
In a cooling surface cladding for polygonal chambers of steam generators with a hopper-shaped floor and fired on the circulating fluidised bed principle, which consists partially of substantially...
5755188 Variable pressure once-through steam generator furnace having all welded spiral to vertical tube transition with non-split flow circuitry  
A once-through steam generator furnace having single pass non-split fluid flow circuitry to prevent steam-water separation with a one to one connection of smaller diameter tubes of the lower...
5735236 Fossil fuel-fired once-through flow stream generator  
In once-through flow steam generators including a burner for fossil fuels and having a vertical gas flue with essentially vertically disposed tubes, inlet ends of the tubes are connected to an...