Abstract: The technical field of the invention is that of making “in-stream” burners which are placed directly inside a duct carrying a flow of gas, with the burners serving to heat the gas and being placed as burner rails that are generally made up of individual blocks. Such burners comprising a pipe on an axis XX′ and suitable for extending transversely across the flow direction of the gas, the pipe being fed with a fuel gas and being pierced by at least two holes in alignment on a common generator line, the burner also having a flame stabilizer formed by two deflector-forming fins diverging on either side of the generator line. According to the invention, at least one of the holes is extended by a tube extending beyond the outer edges of the fins and pierced by at least one fuel gas ejection orifice at its distal end.

Abstract: The technical field of the invention is making a burner capable of using one or more fuels, optionally simultaneously, together with particular features for the gas feed ducts. Such a burner comprises at least four substantially concentric ducts for feeding fuel and primary combustion air, including a duct for axial air and a duct for rotary air disposed outside any fuel outlet opening, and a central stabilizer placed at the outlet of a central primary air delivery duct opening out through orifices of said stabilizer, which stabilizer projects radially relative to any opening of a tube placed inside said central primary air duct and inside which a fuel pipe opens out. According to the invention, said burner has at least one additional gas feed opening out into said stabilizer and disposed around said opening having any diameter lying between the tube within which the fuel pipe opens out and the outer tube defining the central primary air delivery duct.

Abstract: In a method of supplying air to a pulverized solid fuel burner passing through the burner cowl of a furnace, the fuel is dried and then conveyed by means of a given large quantity of hot air, which may or may not be depleted in oxygen in a separator in which the fuel is extracted from it. The fuel is then conveyed to the burner by means of a first portion only of the air from which the fuel has been removed. This conveyor air portion is used as primary combustion-supporting air for burning the fuel in the burner, into which the first portion of air, mixed with the fuel it conveys, is fed via an annular duct. The other portion of the hot air purified in the separator is used at least as additional primary combustion-supporting and flame adjustment air and is fed into the burner peripherally and centrally relative to the first portion of air charged with fuel.

Abstract: A gas burner for discharging a mixture of a gaseous fuel and combustion air into a combustion chamber wherein the mixture is burned and flue gases are formed comprises a burner body having a peripheral wall defining a combustion air supply passage having a central axis and having an orifice communicating with the combustion chamber. Primary gaseous fuel is injected in a central part of the combustion air supply passage, and secondary gaseous fuel is injected through pipes in the combustion air supply passage peripherally distributed about the primary gaseous fuel injection. Conduits for recycling the flue gases are disposed in the combustion air supply passage and associated with the secondary gaseous fuel injection. The secondary gaseous fuel is injected into the conduits, the conduits have an axis extending parallel to the central axis and an orifice along their axis at one end thereof, the orifice communicating with the combustion chamber.

Abstract: The invention provides methods, apparatuses, and rotary furnaces for continuously manufacturing charcoal having a carbon content by weight which is greater than 95% of the total weight of carbon and volatile matter. Fragments of vegetable material contained in a hopper are inserted into a rotary furnace, with the transit time of the fragment through the furnace lying in the range 45 minutes to 60 minutes. The temperature in the front zone of the furnace where carbonization takes place is maintained in the range 900.degree. C. to 1000.degree. C. The furnace is heated by an axial burner which burns both combustible gases due to pyrolysis of the vegetable matter fragments and a second fuel. The charcoal falls into a hopper, from which it passes through a cooling chamber where it is colled by sprayed jets of water, after which it is extracted by an endless screw extractor. One application of the invention is manufacturing charcoal for making activated charcoal free from inorganic impurities.

Abstract: The invention relates to a gas generator with fixed bed and reverse draught, to gasify solid combustible materials.The gas generator according to the invention comprises starting from the top downwards, a loading compartment, a drying and pyrolysis enclosure, a combustion chamber, a rotary hearth plate and an ash tray. The wall of the combustion chamber is lined with a coil inside which flows part of the combustion air which is injected obliquely on the top periphery of the chamber. The center of the combustion chamber is occupied by a core which is driven in rotation by the hearth plate and which is covered by a deflector. Another part of the combustion air is injected through the core at the top of the combustion chamber.The invention finds an application in the gasification of all types of combustible solid material, which may or may not be associated to their carbonization.

Abstract: The invention relates to an incinerator which enables solid waste and/or pollutant liquid waste to be destroyed by burning it, and which comprises a combustion chamber, with double metallic envelope provided with an opening for the evacuation of the ashes in the lower part, with a side opening for the loading of the solid waste, with a shaft at the upper end and with a burner which comprises a first supply of liquid fuel and a second supply of pollutant liquid waste which opens out into the burner.

Abstract: A burner of atomized liquid fuel comprising, in addition to the fuel admission conduit, several supplementary annular conduits fed with an auxiliary liquid such as a liquid effluent, water or a replacement fuel, which conduits communicate by channels with the mixing chambers contained in the nose of the burner.