Abstract: A system for detecting an hotspots can include: at least one infrared imaging sensor; and an imaging analysis computer operably coupled with the at least one infrared imaging sensor. The imaging analysis computer can be configured to control any infrared imaging sensor and acquire infrared images therefrom at any rate and in any duration. The imaging analysis computer can be configured to analyze the infrared images in order to detect temperatures and identify hotspots. The temperature and hotspot information can be used to control a cooling system that can spray water on and around hotspots for temperature control.

Abstract: In a vacuum processing apparatus for performing a predetermined vacuum processing on a surface of a sheet-like base material while keeping the base material to travel inside the vacuum chamber, the can-roller of this invention disposed to lie opposite to a vacuum processing unit has an axial body; an inner cylindrical body to be inserted onto an outside of the axial body; an outer cylindrical body enclosing an outer cylindrical surface of the inner cylindrical body with a gap therebetween, and cover bodies for respectively closing axial both ends of the inner cylindrical body. Each of the cover bodies has a plurality of flow passages. A cross-section of each of the fluid passages overlaps a cross-section of the cover body. A cross-sectional area of the gap between the inner cylindrical body and the outer cylindrical body is set to a size that can obtain a predetermined flow velocity.

Abstract: A device for cooling the opening of a rotary kiln via cool air-blowing, the kiln including a metal cylinder lined internally with a refractory material and being rotatably mounted relative to the frame of the kiln, into which materials are intended to be inserted and fired. The cooling device includes: the aforementioned cylinder and a metal cylinder end part covered with a refractory material and secured to the cylinder; two concentric metal casings, known as the inner and outer casing, which surround the cylinder of the kiln and form two annular channels; and ventilation elements that allow cool air to flow through the annular channels. The device includes: an annular distribution chamber which surrounds the cylinder, is secured thereto and supplies the first channel with air; ventilation elements including at least one fan and an electric motor actuating the fan, and supplying the distribution chamber in an air-tight manner.

Abstract: The present invention provides a heat treatment apparatus which can increase in size without leading to a decrease in heat transfer performance. The heat treatment apparatus performs heat treatment of treatment objects inside a cylindrical body by heating the cylindrical body rotating around an axis, and the heat treatment apparatus includes a pair of movable support parts provided on both ends side along the axis of the cylindrical body so as to be able to move along the axis and rotatably supporting the cylindrical body around the axis, and a fixed support part provided between the pair of the movable support parts along the axis so as to be unable to move along the axis and rotatably supporting the cylindrical body around the axis, wherein the cylindrical body is supported by a three-point support of the pair of the movable support parts and the fixed support part.

Abstract: Provided is a method for producing hot briquette iron by hot-forming high-temperature reduced iron reduced in a reducing furnace, involving cooling the high-temperature reduced iron and controlling the temperature of the reduced iron to an appropriate hot-forming temperature of over 600° C. and 750° C. or less, producing hot briquette iron by hot-forming the high-temperature reduced iron at an appropriate hot-forming temperature with a briquetting machine.

Abstract: An apparatus and method for recovering heat radiating from the outer surface of a rotary kiln includes an enclosure formed as a stationary housing that has an axially extending opening and closure flaps on circumferential ends of the housing extending towards the shell to form a chamber and an exhaust fan, arranged to draw a flow of air into the housing, which flow of air recovers heat from the kiln shell and is discharged from the chamber for heat recovery therefrom.

Abstract: A method for manufacturing a cement clinker includes a rotary furnace, a cyclone preheater receiving the fumes from said rotary furnace, an air blowing clinker cooler, and at least one heat exchanger, referred to as a first heat exchanger. The raw materials are preheated and decarbonated in said cyclone preheater. The clinker is cooled in said clinker cooler. A first portion of the hot air generated by said clinker cooler, or so-called secondary air, is directed to the rotary furnace to be used as combustion air. A second portion of the hot air generated, or so-called tertiary air, is directed and carried separately from the first portion to a place in the facility where fuel is burned. A third portion of hot air generated in said clinker cooler, or so-called excess air, is carried into at least said first heat exchanger for the purpose of recovering power to produce electricity.

Abstract: A thermal transfer roller includes a first end chamber in communication with a source of thermal transfer fluid, an annulus for receiving the fluid and facilitating thermal transfer to a substrate, and a second end chamber in communication with the annulus for receiving the spent thermal transfer fluid. At least one end chamber includes a plurality of channels, each channel having a wider end approaching the annulus and a narrower end away from the annulus. Preferably, the channels are present in both end chambers. The channels substantially reduce angular flow of the fluid caused by rotation of the roller, and help stabilize and maintain desired fluid volumes flowing through the roller as its velocity is increased.

Abstract: The present invention relates to a cooler (2) for a rotary drum kiln (1). The cooler comprises two cylindrical housings disposed one inside the other (6, 7), surrounding the kiln and rotating with it, which housings are mounted at the discharge end of the kiln concentrically with the kiln and between which housings an annular space (8) is formed. The housings are attached to each other by means of longitudinal radial partition walls (16), and the inner cylindrical housing (6) is attached at its ends to the kiln. The annular space (8) has a feeding inlet (11) communicating with the kiln for leading the hot material from the kiln into the cooler and a discharge outlet for discharging the cooled material. The material to be cooled flows counter-currently in relation to the cooling gas flow.

Abstract: The present invention relates to a cooler (2) for a rotary drum kiln (1). The cooler comprises two cylindrical housings disposed one inside the other (6, 7), surrounding the kiln and rotating with it, which housings are mounted at the discharge end of the kiln concentrically with the kiln and between which housings an annular space (8) is formed. The housings are attached to each other by means of longitudinal radial partition walls (16), and the inner cylindrical housing (6) is attached at its ends to the kiln. The annular space (8) has a feeding inlet (11) communicating with the kiln for leading the hot material from the kiln into the cooler and a discharge outlet for discharging the cooled material. The material to be cooled flows counter-currently in relation to the cooling gas flow.

Abstract: A rotary tube furnace suitable for operation in controlled atmospheres at temperatures in the range of 1500.degree. to 2800.degree. comprises a generally horizontal rotatable graphite tube slidably supported on water-cooled split ring graphite bearings. The graphite tube is rotated by means of a stainless steel drive plate and is contained within a flexible atmospheric sealing assembly and enclosure for the containment of a selected atmosphere around and within the tube and allows for the co-current or counter-current flow of gas during operation. Radiation baffles in the interior of the graphite tube inhibit radiant heat loss at the ends of the tube. The graphite tube may be constructed in two or more sections having threaded ends for ease of installation as well as removal or replacement for maintenance purposes. A heating section of the tube is heated by a plurality of graphite electrical heating elements contained within an insulated heating chamber.

Abstract: A probe having a double-tubed structure is provided to communicate with a kiln exhaust gas flowing path. A part of kiln exhaust gas is extracted through an inner tube of the probe, while cooling gas is supplied to a fluid flowing path formed between the inner tube and an outer tube of the probe. The cooling gas is guided to flow into an inner area of a front end portion of the inner tube so as to form a mixing and quick cooling area at a front end portion of the probe, thereby rapidly cooling the extracted gas.

Abstract: A rotary melting furnace having an enclosure supported for rotation. The enclosure includes a cylindrical shell, a pair of disc-shaped flanges connected to the shell at ends thereof, and a unitary liquid cooling circuit. The shell and the flanges each include a portion of the cooling circuit. The shell portion of the cooling circuit is connected to the flange portions of the cooling circuit by pipes.

Abstract: A rotary drum dryer has devices for cooling shielding flights located in the combustion zone of the drum. The devices comprise cooling flights which rotate with the drum to scoop up relatively small amounts of virgin aggregate from aggregate accumulated in the lower portion of the drum and to shower this aggregate over the outer radial surface of the shielding flights upon further rotation of the drum, thereby cooling the shielding flights without substantially decreasing the mean temperature of the aggregate. Cooling efficiency is enhanced by the continuous cascading of fresh aggregate over the shielding flights from the cooling flights through a substantial portion of the drum's rotation. The cooling flights and shielding flights preferably cooperate to limit or even prevent the showering of materials into the burner flame and thus inhibit burner flame quenching and accompanying emissions.

Abstract: The processor is of the type incorporating horizontal, concentric, co-extensive inner and outer tubular members which rotate together. The processor is modified in the following respects:The front end of the inner tubular member is circumferentially corrugated and may be provided in the form of a plurality of parallel tubes arranged in a ring array, to thereby increase the shell area to promote heat transfer through the tube walls;Means are provided for interconnecting the tubular members, which means can accommodate differing rates of thermal expansion; anda rock recycle tube assembly is provided to recover oversize material leaving the corrugated portion of the inner tubular member and reject it from the processor.

Abstract: The drum of the installation is provided with a double wall which is closed on its rear end and where the inside wall of which is provided with openings, with a hollow central tube provided with openings the rear end of which tube is closed, and with radial double walls provided with openings and which connect said tube and the double drum wall with one another, where a duct is provided for blowing incineration air directly into the drum and a duct for at least partially recycling the burnt combustion gases from the drum and returning them to the drum, for cooling the double drum wall, controlling the furnace temperature and preventing waste from baking onto the drum.

Abstract: A system for cooling a single or plural zones of the exterior of a furnace or similar hot device, e.g., kiln, calciner, etc. Each zone is cooled by a respective cooling assembly. The operation of the assemblies is effected by a common control system. Each cooling assembly comprises a shroud, an induction cooler, e.g., an exhaust fan, and at least one atomizing spray nozzle. The shroud is in the form of a jacket disposed over the associated exterior zone of the furnace and is spaced therefrom to form a cooling chamber therebetween. The exhaust fan is coupled to the shroud for inducing the flow of cooling air through the cooling chamber so that it absorbs heat from furnace's exterior. The atomizing spray nozzle is also coupled to the shroud and to a water and an air supply for introducing atomized droplets of water into the chamber, whereupon the droplets vaporize to absorb heat from the furnace's exterior. The exhaust fan vents the air and steam from the shroud means.

Abstract: A heat exchanger including one or more rotating drums with a freely rotating helix inside the drum to move material to be heated or cooled longitudinally through the drum, as well as to help clean the surface of the drum, together with carriers to assist in heat transfer and cleaning of the drum surface, and scoops to recycle the carriers through an inner coaxial drum. The drum has a sealed inlet and outlet disposed so that the seals are not exposed to excessive temperatures. Cooling chambers are coaxially mounted on each end of the rotating drums for cooling and condensing vapors and cooling solid particles treated in the drum. An inner drum conveys the carriers back to the starting point by means of a freely rotating helix.

Abstract: A radial seal for a rotary combustor of a municipal solid waste incinerator disposed between compartments of a windbox having a ring disposed girthwise on the rotary combustor with a flat surface disposed normal to the axis of the rotary combustor and a plurality of bent thin plates attached to the windbox and bent to from a surface which engages the flat surface on the ring to form a running seal therebetween, which allows for differential thermal expansion between the rotary combustor and the windbox and allows for runout.

Abstract: A movable axially oriented air seal for a rotary combustor for burning municipal solid waste wherein the shoe portion of the seal is movable allowing the area over which underfire and overfire air can be supplied to be varied to improve the efficiency of burning the waste irrespective of varying heat value and moisture content of the waste.

Abstract: A watercooled rotary combustor comprising a plurality of pipes or tubes secured together, means mounting the plurality of pipes or tubes for rotation about the axis of the inner surface with the axis being horizontally tilted so as to have a high end and a low end, means for rotating the plurality of pipes or tubes on the mounting, a feeding chute into which burnable waste material can be stacked which opens into the high end of the combustor, the pipes or tubes being interconnected for circulating water flow and having a water input line and a water/steam discharge line, means for circulating water through the lines including a steam drum connected to the discharge line for separating steam from the water, the pipes or tubes being secured so as to define a plurality of intermediate openings so that the inner surface of the combustor is gas porous, and means for delivering controlled amounts of combustion air for burning through selected portions of the porous surface, the improvement comprising, a combustor

Abstract: A revolving grate cooler for cooling of clinker or similar products comprising a tubular shaped body having a plurality of holes. A plurality of curved metal cooling plates having a plurality of openings are secured to a front inner surface of the body, and a plurality of curved plates having smooth surfaces, some of which have outwardly extending projections, are secured to a middle portion of the body. A pressurized chamber communicates with the body to provide air flow through the holes and openings for cooling the products within the body.

Abstract: The invention relates to the cooling of a rotary kiln with a liquid cooling agent. According to the invention, the cooling agent is distributed to form an essentially even liquid blanket above the rotary kiln (1). In order to achieve this, a number of baffle plates (6) and/or nozzle pipes (9) is arranged at an equal height with respect to the surface of the rotary kiln (1).

Abstract: A drum dryer for use in the manufacture of bituminous concrete asphalt is provided with a jacket including a layer of ceramic fiber insulation bonded too an outer sheath of aluminum, the jacket being wrapped the outer peripheral surface of the wall of the drum and secured in place with bands of stainless steel strapping so as to reduce to a minimum heat loss due to dissipation of heat from the outer peripheral surface of the drum wall, thereby enabling conservation of energy, while affording protection to personnel and equipment in the vicinity of the dryer drum against excessive heat. Weather seals are provided for inhibiting the entry of ambient moisture between the jacket and the outer peripheral surface of the wall of the drum.

Abstract: An inclined combustion barrel for a rotary combustor utilized to burn municipal solid waste wherein the combustion barrel is formed from a plurality of parallel cooling pipes disposed in a circular array with a plurality of spaced apart flat plates disposed between adjacent cooling pipes in descending order with overlapping ends and side margins welded to the cooling pipes to form a web between the cooling pipes which provide influent air flow and extends the life of the web.

Abstract: A rotary combustor has a wall formed from water cooled pipes that are secured together by welded perforated strips. The strips comprise cylindrical shaped metallic rods and the perforations are provided either by forming apertures through the cylindrical shaped metallic rods, or by slots formed between segments by spacing segments of cylindrical shaped rods along the pipes, or by gaps formed between welds that are provided at spaced intervals along the pipes and rods. A method of fabricating a rotary combustor wall is also provided.

Abstract: A waste disposal system for the combustion of waste materials which includes a combustor having an inlet end and an outlet end with a furnace enclosing the outlet end. A step extends out from the back wall of the furnace which is spaced from and below the combustor outlet end. The step is hollow on the inside to form a plenum chamber to receive air and has an upper surface which defines a plurality of openings into the furnace whereby air injected through the openings deflects airborne ash and combustible solids from the outlet end of the combustor up into the furnace.

Abstract: A rotary combustor which includes a plurality of water cooled tubes secured together directly to each other to form a cylindrical barrel defining a combustion chamber therein. Every other length of tube is bent outwardly at spaced locations along its length to form a plurality of openings in the barrel to allow combustion air into the combustion chamber. Means including a smaller ring header and a larger ring header are provided at each end of the barrel to interconnect the tubes to permit the circulation of water therethrough.

Abstract: A drum dryer for use in the manufacture of bituminous concrete asphalt is provided with a jacket including a layer of ceramic fiber insulation bonded to an outer sheath of aluminum, the jacket being wrapped around the outer peripheral surface of the wall of the drum and secured in place with bands of stainless steel strapping so as to reduce to a minimum heat loss due to dissipation of heat from the outer peripheral surface of the drum wall, thereby enabling conservation of energy, while affording protection to personnel and equipment in the vicinity of the dryer drum against excessive heat.

Abstract: A water cooled kiln comprises a cylindrical combustor structure made up of a plurality of generally parallel water pipes spaced circumferentially about the periphery of the structure, and a plurality of webs circumferentially interconnecting the pipes so as to present the cylindrical combustor structure. The webs are provided with openings so that combustion air may flow therethrough and into the combustion chamber defined by the cylindrical combustor structure. The webs are protected from corrosion and erosion by the provision of a protective sheet constructed of a corrosion resistant material which is placed in covering relationship to the web inside the chamber. The protective sheet is spaced slightly from the web by dimples or corrugated strips and is attached to the web by spot welding for example.

Abstract: An apparatus and method for retarding the formation of a slag ring on the inner wall of a rotary lime kiln where coal combustion gases are used to provide heat in the calcining chamber of a rotary lime kiln. The inner wall of the kiln, at a predetermined location where a slag ring would tend to form, is cooled so as to cool the dispersed slag prior to contact with the inner wall of the calcining chamber sufficiently to prevent adherence of the slag to the inner wall. Cooling chambers or a cooling channel may be provided in the refractory lining forming the inner wall, or transpiration devices may be provided to inject coolant into the calcining chamber, at the predetermined location, to cool the slag and prevent adherence thereof to the inner wall.

Abstract: A rotary combustor formed of water cooled tubes in an inclined cylindrical array with the lower portion being conical so as to reduce the incline at the lower end. The combustor extends into the cooperating furnace, and is formed with openings between the tubes that increase in size toward the lower end.

Abstract: A combustion barrel used in a rotary combustor is constructed of cooling pipes joined by perforated webs to form a generally cylindrical side wall. Water-cooled baffle pipes are attached to the interior of the generally cylindrical side wall at widely spaced intervals. The baffle pipes and cooling pipes are coupled at an exit end of the combustion barrel to a ring header which in turn is coupled to heat exchanging equipment. The ring header supplies low-energy coolant from the heat exchanger to the cooling and baffle pipes and discharges high-energy coolant from the cooling and baffle pipes to the heat exchanging equipment. At an input end of the combustion barrel, the cooling and baffle pipes are coupled to U-tubes or a return header for returning the coolant to the ring header. Solid material is supplied at the input end of the combustion barrel for incineration. The combustion barrel is slowly rotated as the solid material is transported to the exit end of the barrel.

Abstract: The feed end dam of a rotary kiln is cooled by air directed into an annulus between the feed end dam and a seal mechanism.

Abstract: This invention relates to methods of and apparatus for treating waste products. The apparatus comprises a furnace 1 and a recuperator 2, the furnace comprising at least one rotary section 4 for combustion and/or pyrolysis of the waste products and a stationary section 3 for guiding the smokes generated in the furnace between said rotary section 4 and the recuperator 2. This latter comprises an arrangement 11 -12 for causing the smokes to flow in a state of heat exchange with a fluid 14 for exploitation of the heat thus recovered. A heat-carrier fluid circuit is also incorporated between the walls delimiting the said stationary section 3 and/or the said rotary section 4 of the furnace and the recuperator 2, in such manner that the heat-carrier fluid may transfer the heat it had absorbed during its passage within the furnace walls to the exploitation fluid in the recuperator.

Abstract: In the treatment of bulk materials with hot gases below the melting point of the charge component it is desired to prevent a formation of undesired crusts during normal operation and when the rotary kiln is operated at a reduced speed during short-time trouble. For this purpose, a controlled dissipation of heat is effected in several sections of the rotary kiln in that the shell of the kiln and the refractory lining are cooled so that the temperature of that portion of the inside surface of the rotary kiln which is submerged below the charge is always maintained at or up to 50.degree. C. below the temperature of the charge disposed thereover.

Abstract: A protective device for a discharge end of a tubular rotary kiln comprises a flange extending radially outwardly of the metal kiln shell, a metallic ring affixed to the flange and arranged concentric with the shell at the discharge end, and a refractory ring covering the metallic ring and the front face of the flange. Two sleeves concentrically surrounding the external surface of the metal shell to define respective inner and outer annular chambers through which cooling air is circulated to cool the rear face of the flange, a space between the metallic ring and the internal surface of the metal shell communicating with the outer annular chamber through a passage between the rear face of the flange and the discharge end, and with the inner annular chamber through a port in the metal shell spaced inwardly of the discharge end.

Abstract: This invention concerns a system for the protection of the delivery end of a rotary kiln.This system is characterized by the fact that it consists of a refractory concrete ring covering the internal surface of the end of the kiln shell and the front surface of a flange attached to the outside of the end of the shell, the ring being fastened to the shell and the flange by anchorage units fixed on them.The invention can be used in the cement production and minerals processing industries.

Abstract: A system for drying and preheating small metallic particles such as chips, turnings, borings and the like to remove volatiles therefrom which includes a dryer working in conjunction with a briquetting press. The dryer includes a drying and preliminary combustion chamber includng a revolving drum therein through which the chips pass. The drying and preliminary combustion is heated and is atmospherically sealed and operated with a reducing atmosphere. The volatiles driven from the metallic particles are passed to a combustion completion chamber which is maintained at a temperature sufficient to burn the combustibles and into which air is injected to complete the combustion. The hot metallic particles are thermally insulated and sealed from the atmosphere while being conveyed from the drying and preliminary combustion chamber to the briquetting press where they are compressed into briquettes for subsequent introduction into induction furnaces and the like.

Abstract: The invention relates to a feed conveyor for lime sludge to a lime kiln and, respectively, of cement to a cement kiln. The conveyor, which has the form of a screw conveyor, is characterized in that its housing is cooled by a cooling liquid so that a condensate film is formed on the inside of the housing.

Abstract: A heat recovery system for use with a rotatable cylindrical kiln having a curved sidewall surface and which is adapted to be fired, for example, by a burner supplied through a fuel supply line with fuel oil, comprises, at least one segment member which overlies and is spaced from the kiln curved sidewall surface and which defines a heat radiation absorbing surface. A coolant circulating system is connected to the segment member and a coolant is circulated therethrough and then into a separate heat exchanger which is used for recovering the heat. The heat exchanger may be employed, for example, to preheat the oil which is delivered to a burner for firing the kiln or it may be used in a separate system requiring heat. A segment member is advantageously mounted on an undercarriage so that it may be moved toward or away from the kiln surface in accordance with the heat exchange requirements.

Abstract: A rotary kiln or combustor having a plurality of water cooled pipes secured together to define a cylinder in which material is burned. The cylinder slowly rotates about its axis, and the pipes are secured together so as to define a plurality of intermediate openings making the cylinder gas porous and through which combustion air is introduced. The improvement comprises providing a plurality of pins, secured directly to the pipes on the inside of the cylinder, that create a pattern of projections to support burning material slightly spaced from the inner cylinder wall.

Abstract: The invention has to do with an apparatus for removing heat from cylinders of the rotary kiln recuperator cooler. The apparatus comprises heat-exchange tubes which are fixed on the lateral surfaces of bow-shaped support members so that they go around the cooler surface along a wave line with a space of variable cross section being formed between the heat-exchange tubes and the surfaces of the cylinders. Such constructional arrangement of the apparatus permits the heat-transfer area to be increased and substantially greater amount of heat to be removed from the surfaces of the cylinders.

Abstract: A hollow, high-temperature alloy pipe with motive means to move air there through is employed as a support structure for supporting the feed pipe in a conventional coke-calcining apparatus. The support pipe is horseshoe shaped, and the feed pipe is received in the seat of the horseshoe.

Abstract: A clinker roasting plant comprising a rotary kiln having a housing and a hot head. A cooler for cooling clinker is mounted downstream of the rotary kiln. There are also provided heat-exchange tubes arranged in the zone of flow of roasted clinker from the hot end of the kiln to the place of discharge of finished clinker from the cooler. A heat insulating casing is provided around the heat-exchange tubes, the casing having at least one movable wall for connecting the inner space of the heat insulating casing with the inner space of the zone of flow of clinker.

Abstract: A rotatable horizontal metallurgical furnace for the production of iron or steel includes cooling means at an open discharge end of the furnace. The cooling means includes an annular cooling coil surrounding the discharge end through which cooling liquid is continuously impelled, under centrifugal forces of rotation, from an annular delivery trough to an annular collecting trough.