Method and kiln for the firing of base ceramic articles (BC) comprising: a firing chamber inside which the base ceramic articles (BC) to be fired are conveyed; at least one burner for burning a combustion mixture to heat the firing chamber and to fire the base ceramic articles (BC); first and second feeding device for feeding, respectively, a fuel mixture and an oxidizer to the burner; an identification unit configured to assess the type of fuel mixture and a control assembly which is configured to activate the feeding device and/or the second feeding device depending on the temperature detected in the firing chamber, and to adjust the activation of the second feeding device depending on the type of fuel mixture and on the flow rate of the fuel mixture and on the flow rate of the oxidizer.
F23N 1/02 - Regulating fuel supply conjointly with air supply
F23N 5/10 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
F23N 5/18 - Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
F27B 9/02 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity of multiple-track typeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity of multiple-chamber typeCombinations of furnaces
F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
2.
HEATING ASSEMBLY AND INDUSTRIAL APPARATUS FOR THE FIRING OF CERAMIC ARTICLES
An industrial apparatus and a heating assembly for the firing of ceramic articles, which is installable in a kiln and comprises: an electric heater, comprising a tubular casing, a feeding duct to feed a gas comprising air, at least one electric heating element which can be operated in order to heat the gas; and a tubular discharge element extending from the tubular casing, is configured to be flown through by the gas exiting the electric heater and comprises at least a first leading outlet to lead at least part of said gas towards said firing chamber, which first leading outlet has a through-hole with an equivalent diameter smaller than or equal to approximately 25 mm.
A burner for the firing of ceramic articles which can be installed in an industrial kiln can include a firing chamber; the burner further including a mixing body; a spark device; a flame detection device; a first tubular discharge element configured to be flown through by a fluid flowing out of the mixing body and provided with a first end and with a second end opposite the first end; wherein the mixing body comprises both a partitioning system of the fuel, configured to divide the fuel in a plurality of first portions, and an oxidizer partitioning system, configured to divide the oxidizer into a plurality of second portions, which are conveyed so as be mixed in at least two different stages with the first portions.
F23C 6/04 - Combustion apparatus characterised by the combination of two or more combustion chambers in series connection
F23D 14/10 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
F23D 14/64 - Mixing devicesMixing tubes with injectors
F23N 1/02 - Regulating fuel supply conjointly with air supply
4.
METHOD AND SYSTEM TO RECOVER WATER FROM A SPRAY-DRYER
A method and system (1) to recover water from a spray-dryer (2); the method provides: a spray-drying step, during which a spray-dryer (2) atomizes a water suspension of ceramic material and generates atomised ceramic powder and discharge fumes; conveying the discharge fumes through a duct (18) to at least one heat exchanger (19); introducing water into the duct (18) so as to generate a discharge mixture; and a water recovery step, during which the discharge mixture passes through the heat exchanger (19) and is cooled to cause condensation of at least part of the water vapour contained therein so as to obtain condensate water (AC) which is collected in a collecting unit (21).
B01D 1/14 - Evaporating with heated gases or vapours in contact with the liquid
B01D 1/18 - Evaporating by spraying to obtain dry solids
B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01J 2/04 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
F26B 3/12 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it in the form of a spray
5.
BURNER, APPARATUS AND METHOD FOR THE FIRING OF CERAMIC ARTICLES
Burner (1) for firing ceramic articles (T) comprising: a mixing body (5) comprising, in turn, at least one duct (6) to feed a fuel (FL) and at least one duct (7) to feed an oxidizer (OX); a spark device (8) to start a combustion; a flame detection device (9); a first tubular discharge element (11), which is configured to be crossed by a fluid (F) flowing out of the mixing body ((55)) and is provided with a first end (12), into which at least part of the mixing body (5) is inserted, and a second end (14), which is opposite the first end (12); and an introduction element, which is configured to inject fuel (FL) downstream of the first tubular discharge element (11), in the area of the second end (14) or projecting from the second end (14).
F23D 14/02 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
F23N 1/02 - Regulating fuel supply conjointly with air supply
F23C 3/00 - Combustion apparatus characterised by the shape of the combustion chamber
F23C 9/00 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
A burner for the firing of ceramic articles (T) which can be installed in an industrial kiln and comprising a mixing body, a first tubular discharge element, which is configured to be passed through by a fluid (F) flowing out of the mixing body, at least one second tubular discharge element and a suction element, which is configured to bring at least part of the gases (G, G′) present inside the firing chamber into the second tubular discharge element and is provided with one or more openings arranged between the first and the second tubular discharge elements. The mixing body comprises a multi-stage combustion head arranged at least partially inside the first tubular discharge element.
Method and kiln (1) for the firing of base ceramic articles (BC) comprising: a firing chamber (7) inside which the base ceramic articles (BC) to be fired are conveyed; at least one burner (4) for burning a combustion mixture to heat the firing chamber (7) and to fire the base ceramic articles (BC); first and second feeding device (12, 13) for feeding, respectively, a fuel mixture and an oxidizer to the burner (4); an identification unit (21) configured to assess the type of fuel mixture and a control assembly (22) which is configured to activate the feeding device (12) and/or the second feeding device (13) depending on the temperature detected in the firing chamber (7), and to adjust the activation of the second feeding device (13) depending on the type of fuel mixture and on the flow rate of the fuel mixture and on the flow rate of the oxidizer.
F23N 1/02 - Regulating fuel supply conjointly with air supply
F23N 5/10 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
F23N 5/18 - Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
8.
HEATING ASSEMBLY AND INDUSTRIAL APPARATUS FOR THE FIRING OF CERAMIC ARTICLES
An industrial apparatus (29) and a heating assembly (1) for the firing of ceramic articles (T), which is installable in a kiln (2) and comprises: an electric heater (5), comprising a tubular casing (6), a feeding duct (8) to feed a gas (G) comprising air, at least one electric heating element which can be operated in order to heat the gas (G); and a tubular discharge element (10) extending from the tubular casing (6), is configured to be flown through by the gas (G) exiting the electric heater (5) and comprises at least a first leading outlet (11) to lead at least part of said gas (G) towards said firing chamber (3), which first leading outlet (11) has a through-hole with an equivalent diameter smaller than or equal to approximately 25 mm.
Burner (1) for the firing of ceramic articles (T) which can be installed in an industrial kiln (2) comprising a firing chamber (3); the burner (1) comprising a mixing body (5); a spark device (8); a flame detection device (9); a first tubular discharge element (11) configured to be flown through by a fluid (F) flowing out of the mixing body (5) and provided with a first end (12) and with a second end (14) opposite the first end (12); wherein the mixing body (5) comprises both a partitioning system of the fuel (FL), configured to divide the fuel in a plurality of first portions, and an oxidizer partitioning system (OX), configured to divide the oxidizer (OX) into a plurality of second portions, which are conveyed so as be mixed in at least two different stages with the first portions.
F23D 14/02 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
F23D 14/10 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
An industrial apparatus for the firing of ceramic articles; the apparatus comprises a tunnel kiln provided with at least one side wall, a firing chamber and a transport system configured to convey a plurality of ceramic articles along a conveying path; the apparatus comprises at least one burner, which is provided with a first tubular discharge element, a second tubular discharge element and a suction element for the gases present in the firing chamber; the suction element is arranged between the first tubular discharge element and the second tubular discharge element inside the firing chamber.
A burner (1) for the firing of ceramic articles (T) which can be installed in an industrial kiln (2) and comprising a mixing body (5), a first tubular discharge element (11), which is configured to be passed through by a fluid (F) flowing out of the mixing body (5), at least one second tubular discharge element (18) and a suction element (19), which is configured to bring at least part of the gases (G, G') present inside the firing chamber (3) into the second tubular discharge element (18) and is provided with one or more openings (20) arranged between the first (11) and the second (18) tubular discharge elements. The mixing body (5) comprises a multi-stage combustion head (10) arranged at least partially inside the first tubular discharge element (11).
patents
