Abstract: The invention relates to a burner arrangement comprising a fluid cooled copper block. Further, the invention relates to a burner assembly, a duct element, a gas circulating duct, and a metallurgical furnace comprising said burner arrangement. The burner arrangement (B) comprises a fluid cooled copper block (3) including a cooling conduit (4) for circulation of the cooling fluid, a first end (5) to which the burner unit (1) is releasably attached and a second end (6), and that the burner channel (2) extends inside the fluid cooled copper block (3) from the first end (5) to the second end (6).

Abstract: Contemplated devices and methods reduce heat loss and energy demand in a ring furnace by heating an additional oxygen containing stream in a supplemental oxygen conduit that is thermally coupled to a flue duct of a cooling zone. The so heated additional oxygen containing stream is then fed to the firing and/or pre-heat zones to increases combustion of volatiles and to reduce fuel demand by recycling waste heat to the firing and/or pre-heat zones.

Abstract: Contemplated devices and methods reduce heat loss and energy demand of a carbon baking ring furnace by employing a preferably internal bypass conduit that feeds a portion of a heated cooling air stream from the cooling zone directly to the flue ducts of the firing and/or pre-heat zones.

Abstract: A fluid-cooled through-port oxy-fuel burner for converting an air-fuel regenerator port from air-fuel combustion to oxy-fuel combustion and an associated furnace and method. The oxy-fuel burner is suitable for installing through a regenerator port neck. The burner has an elbow-like bend to accommodate the geometry of the regenerator port neck. The burner has a cooling fluid jacket, a fuel conduit, a first oxidant conduit, and optionally an oxidant staging conduit.

Abstract: An apparatus for cleaning and cooling a liquor nozzle, the nozzle including at least a liquor tube for feeding liquor and chemicals into a furnace of a recovery boiler. The apparatus includes an outer casing tube, which defines a space whereto conduits are provided for introducing water and steam to generate an emulsion or a conduit for introducing emulsion generated by the water and steam and the surface of which is provided with openings, such as pores or holes, for discharging the emulsion formed by water and steam through the outer casing.

Abstract: The present invention relates to a cooling system of a furnace, more particularly, to a multi-cycle cooling system, located by the furnace door. The multi-cycle cooling system comprises the first gas cooling cycle, the second gas cooling cycle, the first liquid cooling cycle, the second liquid cooling cycle, the heat sinks and the heat insulation slot. When inside the process tube proceeds the high temperature process like depositing process, the first gas cooling cycle and the second gas cooling cycle are opened and the second liquid cooling cycle is closed at the same time. The second gas cooling cycle and the second liquid cooling cycle are assembled in the first flange, which is located on the process tube and contacts with the door. The first liquid cooling cycle in the second flange, which is located on the process tube and contacts with the first range, is always opened.

Abstract: A furnace includes a motor in a motor housing that drives a fan that draws heated air through a heat exchanger of the furnace and also draws a flow of air through the motor housing to cool the motor as well as the motor housing.

Abstract: A method and an apparatus for producing semiconductor devices in which a semiconductor wafer is adhered to an ultraviolet sensitive tape, the adhesion force of which decreases upon irradiation with ultraviolet rays, the ultraviolet sensitive tape being adhered to a ring frame so that the semiconductor wafer is fixed to the ring frame with the ultraviolet sensitive tape. Successive semiconductor wafers thus fixed to respective ring frames are subjected to a series of steps including dicing, breaking, and ultraviolet irradiation for reducing the adhesiveness of the ultraviolet tape. The semiconductor wafer, broken and divided in dice and held by the ultraviolet sensitive tape with reduced adhesiveness, is sent to a next step, such as a die-bonding step.

Abstract: A heating furnace for e.g. a hot rolling process of any object is disclosed. The furnace has a heat-resistant conveyer device for conveying a treatment object in a high-temperature atmosphere inside the furnace. The conveyer device includes an elongate cooling chamber, a rotary-member guiding passage, an endless rotary member, a drive unit and a roller. The elongate elongate cooling chamber is disposed along a direction of conveying the object inside the furnace and allowing flow of a cooling medium inside the chamber. The rotary-member guiding passage is constructed as a gutter-like recess formed along an entire length of the elongate cooling chamber. The endless rotary member includes a plurality of receivers interconnected with each other in the form of a loop. Each receiver has an object-receiving end thereof exposed from the guiding passage and the opposite end thereof disposed inside the guiding passage and the rotary member is driven by the drive unit to convey the object.

Abstract: A calcining kiln for burning limestone or similar mineral raw material is formed with a wall structure which is gas-permeable at least in a region adjacent the openings of burners extending to the interior of the kiln with a compressed gaseous medium being supplied through the gas-permeable wall structure toward the interior of the kiln.

Abstract: A coking oven having a coking chamber and a combustion chamber with a high temperature flue gas outlet connected to a first heat exchanger for heating cool air to cool the flue gases to an intermediate temperature, a coal dryer using the intermediate temperature flue gases for drying wet coal to a water content of a few percent by weight and preheating the coal to a temperature below the boiling point of water, a coal oiler to oil the partially dried and preheated coal, and a gas cleaner system for removing particulate matter from the low temperature flue gas coming from the coal dryer; also disclosed is an improved method of coking coal and apparatus for preheating and partially drying coal that can be added to existing coke oven structures.

Abstract: A method and apparatus for calcining calcium sulphate dihydrate in a calcination vessel in which the dihydrate is heated in the vessel to calcination temperature not only by heat applied to the exterior of the vessel but also by hot gas, especially hot gaseous combustion products, supplied into the interior of the mass of calcining material within the vessel. The supply of hot gas according to the invention can improve the production rate in both batch and continuous calcination operations without adversely affecting the product quality, by permitting increase in the heat input to the vessel without entailing the risk of vessel bottom burn-out.

Abstract: Exhaust heat from a slot furnance is recouped by a preheater unit consisting of a pipe mounted within a flue into which exhaust gasses pass through a slot, the flue being formed by a three-sided structure mounted on the outside wall of the furnance above the slot. Combustion air is supplied to the preheater pipe in a direction tangential and transverse to the pipe axis, and a passage leading from the preheater pipe to the furnace burner or burners is provided with means for controlling the temperature and volume of the preheated air supplied thereto.

Abstract: There is disclosed a water cooled support bar comprised of a pipe within a pipe which assures the axial position of a cylinder-like sleeve of heat shrinkable foam thermoplastic material on a glass container during transport from an assembly station on a turret machine into a tunnel-type oven and until the thermoplastic sleeve shrinks sufficiently snugly onto the container to be held thereby. Polyethylene material, and perhaps other polyolefins, have the tendency to become more pliable and grow or enlarge under heat prior to actually shrinking. It is during this initial heat-up time the invention serves to retain the sleeve form in place on the container. The support pipe includes a Teflon or like lubricious surface layer at least along the side thereof adjacent the plastic sleeve lower edge. The lubricious surface layer combined with water cooling prevents sticking of the plastic on the support bar.