Abstract: Method and equipment for conditioning wet concrete (703), the wet concrete (703) being agitated in a revolving-drum concrete mixer (702), thereby bringing changing portions of the wet concrete (703) to a free surface (706) of the wet concrete (703) inside the mixer (702), the agitated wet concrete (703) being cooled and partially carbonated in that liquid and/or solid carbon dioxide is supplied to the concrete mixer (702) simultaneously with liquid nitrogen so that both the supplied nitrogen and the supplied carbon dioxide contact the free surface (706) of the wet concrete (703).

Abstract: A method for the use of a gaseous effluent containing a CO2 gas fraction and a non-CO2 gas fraction, including at a first location: providing liquid nitrogen at a temperature less than ?196° C., and causing the gaseous effluent to contact the liquid nitrogen to as to capture at least part of the CO2 present in the CO2 gas fraction as a mixture of CO2 particles and liquid nitrogen. Conveying at least part of the mixture to a second location, and at the second location, bringing the mixture into contact with one or more ingredients of a wet concrete before and/or during and/or after the wet concrete is prepared by blending the ingredients of the wet concrete in a blender, so that the mixture extracts heat from said one or more ingredients of the wet concrete, and CO2 from the mixture partially carbonates Ca-compounds present in the wet concrete.

Abstract: Furnace operation includes consecutive cycles of a heating step, a stopping step and a restarting step. The fuel and/or the oxidizing agent is preheated upstream of the furnace by indirect exchange with the discharged fumes through a medium passing through a chamber. A first wall separates the fumes from the medium in the chamber. The fuel and/or oxidizing agent is separated from the medium in the chamber by a second wall. During restarting, the medium's flow rate Dm is regulated to limit the heating rate of the first wall until it reaches the operational temperature at an end thereof.

Abstract: The invention relates to a method and facility for manufacturing a cross-linked fiberglass material, in which melted glass is produced in a melting furnace heated via combustion of a fuel with an oxygen-rich oxidant. The melted glass is converted into glass filaments, the filaments are bonded, a sheet is made from the bonded filaments, and the sheet is then cross-linked. The fumes from the melting furnace are used to preheat a combustion reagent in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air. The air is then used in the cross-linking step of the method for converting the melted glass into a fiberglass material.

Abstract: The invention relates to a method and facility for manufacturing a cross-linked fiberglass material, in which melted glass is produced in a melting furnace heated via combustion of a fuel with an oxygen-rich oxidant. The melted glass is converted into glass filaments, the filaments are bonded, a sheet is made from the bonded filaments, and the sheet is then cross-linked. The fumes from the melting furnace are used to preheat a combustion reagent in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air. The air is then used in the cross-linking step of the method for converting the melted glass into a fiberglass material.

Abstract: The invention relates to a method and facility for manufacturing a fiberglass material, in which melted glass is produced in a melting furnace heated via combustion of a fuel with an oxygen-rich oxidant. The fumes generated are used to preheat a combustion reagent in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air. The air is then used in the method for converting the melted glass into a fiberglass material.

Abstract: Method for indirectly preheating a fluid upstream of a furnace, wherein the fluid is preheated by indirect heat exchange with fumes discharged from the furnace through a medium in a chamber, and wherein the flow rate of the medium in the chamber is adjusted on the basis of at least one of the following temperatures: the temperature of the discharged fumes, the temperature of the medium in the chamber, the temperature of the preheated fluid, and the temperature of the wall separating the discharged fumes from the medium in the chamber.

Abstract: The invention relates to a fiberglass material manufacture method and facility, were in molten glass is converted into fiberglass material via the steps of spinning, drawing, sizing, and collecting, followed by a step of producing a resulting fiberglass material that is then subjected to thermal desizing. The fumes from the melting furnace are used to preheat a combustion reagent from the melting furnace in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air, the air then being used in the step of desizing the fiberglass material.

Abstract: A method is implemented in a networked computer system that is connected to document issuers and validators and interacts with a blockchain. It comprises generating a master key assigned to an issuer, certifying a document through a first process including generating a document persistence key, encrypting document data with an encryption algorithm and an encryption key derived from three keys (the master key, the document persistence key and an intermediate key), registering encrypted document data in the blockchain, and generating a web address carrying recovery information of the certified document; reading the document through a second process accessible to the web address, the second process including recovering the encrypted data in the blockchain and accessing the three keys, decrypting the encrypted data using the encryption key derived from the three keys, and displaying the document; and upon request from a legitimate holder of the document erasing the persistence key.

Abstract: A method is implemented in a networked computer system that is connected to document issuers and validators and interacts with a blockchain. It comprises generating a master key assigned to an issuer, certifying a document through a first process including generating a document persistence key, encrypting document data with an encryption algorithm and an encryption key derived from three keys (the master key, the document persistence key and an intermediate key), registering encrypted document data in the blockchain, and generating a web address carrying recovery information of the certified document; reading the document through a second process accessible to the web address, the second process including recovering the encrypted data in the blockchain and accessing the three keys, decrypting the encrypted data using the encryption key derived from the three keys, and displaying the document; and upon request from a legitimate holder of the document erasing the persistence key.

Abstract: Method for indirectly preheating a fluid upstream of a furnace, wherein the fluid is preheated by indirect heat exchange with fumes discharged from the furnace through a medium in a chamber, and wherein the flow rate of the medium in the chamber is adjusted on the basis of at least one of the following temperatures: the temperature of the discharged fumes, the temperature of the medium in the chamber, the temperature of the preheated fluid, and the temperature of the wall separating the discharged fumes from the medium in the chamber.

Abstract: Furnace operation includes consecutive cycles of a heating step, a stopping step and a restarting step. The fuel and/or the oxidizing agent is preheated upstream of the furnace by indirect exchange with the discharged fumes through a medium passing through a chamber. A first wall separates the fumes from the medium in the chamber. The fuel and/or oxidizing agent is separated from the medium in the chamber by second wall. During restarting, the medium's flow rate Dm is regulated to limit the heating rate of the first wall until it reaches the operational temperature at an end thereof.

Abstract: Combustion method and installation in which an oxygen-rich oxidant is preheated by exchange of heat with a heat-transfer fluid, upstream of the combustion chamber, in which method and installation an auxiliary gas is heated by heat exchange with a first proportion of the hot flue gases discharged from the chamber, and in which method and installation the heat-transfer fluid comprises a mixture of at least a proportion of the heated auxiliary gas with a proportion of hot flue gases.

Abstract: Process for heating via oxy-fuel combustion in which a stream of air is heated by means of at least one portion of the residual heat present in the fuel gases discharged from the combustion chamber, at least one portion of said hot air stream is introduced into an oxygen production unit in which a portion of the oxygen present in the hot air stream is extracted by means of one or more ITM, with a first stream of oxygen at high temperature being obtained, said first stream of oxygen is mixed with a second stream of oxygen so as to obtain a total stream of oxygen at a lower temperature than that of the first stream of oxygen, at least one portion of the total stream of oxygen being transported to the combustion chamber and used within as oxygen-rich oxidizer.

Abstract: The invention relates to a method and facility for manufacturing a fiberglass material, in which melted glass is produced in a melting furnace heated via combustion of a fuel with an oxygen-rich oxidant. The fumes generated are used to preheat a combustion reagent in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air. The air is then used in the method for converting the melted glass into a fiberglass material.

Abstract: The invention relates to a method and facility for manufacturing a cross-linked fiberglass material, in which melted glass is produced in a melting furnace heated via combustion of a fuel with an oxygen-rich oxidant. The melted glass is converted into glass filaments, the filaments are bonded, a sheet is made from the bonded filaments, and the sheet is then cross-linked. The fumes from the melting furnace are used to preheat a combustion reagent in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air. The air is then used in the cross-linking step of the method for converting the melted glass into a fiberglass material.

Abstract: Glass production process whereby at least part of a reducing gas composition (100) introduced into a float chamber (4) receiving molten glass (3) from a melting chamber heated by combustion of fuel (27) with oxidant (28), is preheated by heat exchange with fumes (25) evacuated from a melting furnace (2) before said part of the reducing gas composition (100) is introduced in the float chamber (4) and installation for use in said glass production process.

Abstract: The invention relates to a fiberglass material manufacture method and facility, were in molten glass is converted into fiberglass material via the steps of spinning, drawing, sizing, and collecting, followed by a step of producing a resulting fiberglass material that is then subjected to thermal desizing. The fumes from the melting furnace are used to preheat a combustion reagent from the melting furnace in two steps: a first step in which air is heated via heat exchange with the fumes, and a second step in which the combustion reagent is preheated via heat exchange with the hot air, the air then being used in the step of desizing the fiberglass material.

Abstract: Combustion method and installation in which an oxygen-rich oxidant is preheated by exchange of heat with a heat-transfer fluid, upstream of the combustion chamber, in which method and installation an auxiliary gas is heated by heat exchange with a first proportion of the hot flue gases discharged from the chamber, and in which method and installation the heat-transfer fluid comprises a mixture of at least a proportion of the heated auxiliary gas with a proportion of hot flue gases.

Abstract: Process for heating via oxy-fuel combustion in which a stream of air is heated by means of at least one portion of the residual heat present in the fuel gases discharged from the combustion chamber, at least one portion of said hot air stream is introduced into an oxygen production unit in which a portion of the oxygen present in the hot air stream is extracted by means of one or more ITM, with a first stream of oxygen at high temperature being obtained, said first stream of oxygen is mixed with a second stream of oxygen so as to obtain a total stream of oxygen at a lower temperature than that of the first stream of oxygen, at least one portion of the total stream of oxygen being transported to the combustion chamber and used within as oxygen-rich oxidizer.