Abstract: Smokeless burnout of regenerative thermal oxidizer systems is accomplished by isolating the incineration system from the process flow and drawing fresh air into the heating regenerator at approximately one-fourth of the normal process flow. A purge/burnout fan is employed to induce flow through an idle regenerator drawing high temperature gas from the retention chamber through the idle regenerator. Gas is directed from the purge/burnout fan back into the retention chamber to oxidize contaminants which has been volatilized from the media in the third regenerator. The reduced flow rate of the system and maintaining flow through the regenerator being burned out while continuing to cycle the remaining regenerators as heating and cooling regenerators builds the temperature in the burnout regenerator until volatilization of all contaminants is achieved.

Abstract: A superheated steam generator having superheating steam tubes and boiler tubes fluidly connected to a boiler, wherein the steam tubes and boiler tubes extend, intermediate of a heat source and the boiler. Localized insulation is located adjacent the superheating steam tubes and intermediate of the boiler and the heat source to reduce heat transfer to the boiler in the region of the superheating steam tubes. To prevent local roiling within the boiler, the thermal resistance of the local insulation and the superheating steam tubes is substantially equal to the thermal resistance of the boiler tubes.

Abstract: An apparatus for delivering material to the interior of a kiln to be burned therein which includes a feeding mechanism which rotates with the kiln within a stationary transfer means or drum, means for delivering material to be burned to the interior of the transfer drum, said feeding mechanism including means for collecting material from the transfer drum as it rotates and said feeding mechanism including means for compressing, shredding in some applications and delivering the material to the interior of the kiln.

Abstract: The invention relates to a method of flue gas abatement for a combustion process, particularly for a refuse incinerating unit, in the case of which ammonia in a gaseous form or dissolved in water is fed into the combustion process or hot flue gases therefrom and furthermore preferably acidic components are removed by scrubbing from the flue gases and are neutralized by a basic material, to which milk of lime has been added, and furthermore the flue gases may be passed in addition though adsorbing materials and if necessary basic materials are supplied to the process so that nitrogen oxides, hydrogen chloride in gas form, dioxines and furans are removed. The material necessary for this are taken from a local sewage plant where they at least proportionately form partial streams in a sludge treatment unit and otherwise would have to be dispensed with.

Abstract: For incineration of solid combustible waste a method is described according to which the waste is introduced into and incinerated in the outlet casing of a rotary kiln when brought into contact with the hot airstream flowing through the kiln. Hence a simple and cheap method for incinerating waste is obtained, since the waste is introduced through a stationary wall.

Abstract: An incinerator designed so that the reaction of unburnt gas with oxygen progresses rapidly to thereby minimize the amount of unburnt gas generated therefrom. An intermediate portion of a combustion chamber is contracted in the cross-sectional direction with respect to the direction of flow of gas to thereby provide a throttling passage (14) over a predetermined distance. A part of the combustion chamber which is below the throttling passage (14) and a part of the combustion chamber which is above the passage (14) are enlarged in the cross-sectional direction to define a lower combustion chamber (13) and an upper combustion chamber (15), respectively. A first barrier (16) is disposed in the vicinity of the inlet of the throttling passage (14) across the lower combustion chamber (13) and a second barrier (17) is disposed in the vicinity of the outlet of the throttling passage (14) across the upper combustion chamber (15).

Abstract: A pulsed atmospheric fluidized bed reactor system is disclosed and claimed along with a process for utilization of same for the combustion of, e.g. high sulfur content coal. The system affords a economical, ecologically acceptable alternative to oil and gas fired combustors. The apparatus may also be employed for endothermic reaction, combustion of waste products, e.g., organic and medical waste, drying materials, heating air, calcining and the like.

Abstract: The instant invention relates to a process and device for waste incineration with an oxidation agent, which consists of oxygen in a higher concentration than in air, whereby the combustion gases pass through a filter, which is resistant to high temperatures and which is arranged behind the combustion zone and whereby the gases are cooled subsequently.

Abstract: A system for discharging ash comprises a hopper provided with a system of hydraulically activated valves having the function of separating the hopper environment from the extractor environment, thereby creating an accumulation store inside the hopper which allows brief shutdowns for any required maintenance in the downstream extractor and the plant, and which prevents the direct falling of large lumps of agglomerated ash onto the belt and also, in the case of a multifuel boiler, avoids radiation to the extraction belt when gas or oil is used as fuel. Downstream of the area of ash discharge from the extractor a system of crushing, cooling, transport and storage of the ash is also provided.

Abstract: The installation comprises a steam generator, which consists of a first heat exchanger (50) and two second heat generators (53, 54). The first heat exchanger (50) is a radiant heat exchanger, in which the temperature of the hot gas coming from a reactor (52) is lowered to a temperature beneath the softening point of the dust. The second heat exchangers (53, 54) are convection heat exchangers, which are connected after downstream of the first heat exchangers (50) in the gas flow and are connected in parallel to one another. In the gas flow downstream of each second heat exchanger (53, 54) is a shut-off device (61 and 62).

Abstract: Process and apparatus for the removal of carbonaceous materials from particles containing such materials, comprising introducing said particles into the lower part of a first, riser-type reactor, into which lower part an oxygen-containing gas is introduced, the reactor being operated under entrainment conditions with a relatively high density phase in the lower part and with a relatively low density phase in the upper part at a temperature suitable to burn off carbonaceous materials at such a rate that the flue gas at the top of the reactor does not contain any substantial amount of oxygen, separating solids and gas at the top of the reactor, introducing the separated particles into the upper part of a second, fluidized bed-type reactor while introducing an oxygen-containing gas into the lower part of the second reactor, the reactor being operated under fluidized bed conditions at a temperature suitable to burn off carbonaceous materials, the amount of oxygen-containing gas being established in such a way tha

Abstract: A low-nox burner for use in industrial furnaces and/or boilers which burn pulverized coal. The burner includes a burner tip which divides an annular pulverized coal stream into alternating fuel-rich and fuel-lean streams. The tip includes a plurality of alternating main and secondary blade members which are skewed to produce rotational movement in the streams. The main blade has a leading edge that is aligned with a radial vector extending through a center axis of the burner and a trailing edge that is tilted with respect to the radial vector in order to define a substantially planar surface between the leading and trailing edges. The secondary blade includes leading and trailing edges that are both aligned with radial vectors and defines a twisted surfaces between the edges. The secondary blade is skewed with respect to the longitudinal direction by an angle that is substantially greater than the angle at which the main blade is skewed.

Abstract: A process furnace and method of operating a furnace are disclosed. The furnace comprises a radiant heating chamber, a primary convection section leg, a secondary convection section leg with two or more parallel flow channels, convection burners to heat the primary and/or secondary convection sections and dampers to adjust flue gas flow and temperature through the parallel flow channels. Combustion air comprising a mixture of gas turbine exhaust and fresh air which has been preheated in one of the parallel flow channels s supplied to the burners. The split flue design facilitates greater control of the flue gas temperature for improved operating efficiency.

Abstract: A hot water heater is arranged and configured for mounting within a wall structure having a removable front panel, with the front panel having upper and lower openings for access to controls of the hot water heater tank assembly.

Abstract: A method of burning a combustible solid residue from a chemical plant, which comprises feeding a slurry of combustible solid residues in an oil, the amount of the oil being at least 0.5 part by weight per part by weight of the combustible solid residues, into a burner in a combustion furnace comprised of a main combustion chamber having the burner in its arch, a secondary combustion chamber formed in the lower portion of the main combustion chamber, and a flue gas duct provided beneath and following the secondary combustion chamber, burning the residue in the main combustion chamber, conducting the combustion gas into the secondary combustion chamber, and allowing it to reside at a temperature 800.degree. to 1000.degree. C. for at least 0.5 second.

Abstract: This invention relates to a method and apparatus for the extraction of smoke from the exhaust gases of an internal combustion of fuel in a mechanical device. It also relates to the extraction of heat from such exhaust gases. The apparatus is positioned to accept the flow of the device's hot exhaust gases through its insulated chambers and is sized to allow sufficient time of exposure of said hot exhaust gases to the high temperatures held within said chambers. The high temperatures are augmented by a heating element and the introduction of additional outside air at a venturi tube located near the entrance of the apparatus. Thus the apparatus holds the exhaust gases long enough inside its sufficiently oxidized chambers under sufficiently high temperatures to burn all the smoke particles in said exhaust gases.

Abstract: An incinerator of sectional structure has an airpipe for sending combustion air into a furnace. The airpipe is a straight pipe tapered off at end portion and closed by a plug of castable refractory material filled up in the tapered portion to improve the durability under high temperature circumstances. The airpipe is also inserted into a furnace through a hole opened on an upper furnace wall, and a seal member of easy spallable and castable refractory material fills up the gap between the airpipe and the hole to make easy exchange of the airpipe possible.

Abstract: Equipment for melting a used injection needle includes a pair of movable contacts (2) and a fixed contact (3) between which electric voltage is applied. A short-circuit detector (4), determines when the movable contacts (2) and the fixed contact (3) are short-circuited by a used injection needle (9), and a timer (5) produces a signal during the period in which the short-circuit detector (4) produces a signal. An electromagnet drives the movable contacts (2) together to secure the used injection needle (9) to decrease the contact resistance between the movable contacts (2) and the used injection needle (9) and to allow a large electric current to flow in the used injection needle (9) in a stable manner.

Abstract: A process and apparatus for generating electricity from coal comprising a vertically stacked, three-stage combustor in which a sorbent is calcined in a calciner zone of the combustor and transferred to a carbonizer zone disposed below the calciner zone, coal introduced into the carbonizer zone is carbonized, producing char and spent sorbent, both of which are transferred to a combustor zone disposed below the carbonizer zone, in which the char is combusted at a substoichemetic air-to-coal ratio, producing a fuel gas. The fuel gas is cleaned and combusted in a turbine combustor, producing a flue gas which is introduced into a gas turbine for producing electricity.

Abstract: The procedure for supplying combustion air during grate firings, in which the primary combustion air is introduced into the fuel, and secondary combustion air is introduced directly into the flow of exhaust gas, and in which, in addition, some of the exhaust gas is tapped off from the flow of exhaust gas and returned to the combustion process, includes the withdrawal of exhaust gas directly above the fuel in the area where there is a large quantity of unused primary air, and the delivery of this exhaust gas that has been tapped off to the combustion air, the quantity of which is reduced according to the quantity of exhaust gas that is mixed with it.