L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

American Air Liquide, Inc.

Agc Glass Europe

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Remi Tsiava

Bertrand Leroux

Patrick Recourt

Benoit Grand

Xavier Paubel

Taekyu Kang

Olivier Douxchamps

Gabriel Constantin

Carlo Renna

Harley A Borders

Louis C Philippe

Pierre Bodelin

Luc Jarry

James J F McAndrew

Ryan B Adelman

Michel Gimenez

Vivek Gautam

Henri Chevrel

Magnus Mortberg

Jacky Laurent

Laurent Rio

Morten Drivsholm

Kenneth A Mulderink

Robert Kalcevic

Bernard Dubi

Jiefu Ma

Henrik Wassard

Jacques Mulon

Colin Paxton

Bruno Symoens

Eric Baudelet

Faustine Panier

Youssef Joumani

Bernard Labegorre

Lahcen Ougarane

Johan Behen

Nicolas Docquier

Kenneth Kaiser

Paul Berhaut

Mohand Amirat

Rajeev S Prabhakar

Fabrice Wagemans

Lahoen Ougarane

Alex Grassi

Dirk Hoelscher

Yuan Xue

Chendhil Periasamy

Sergio Fernandes

James JF Mcandrew

Method and installation for calcining cement raw meal in a calciner whereby fuel and a calciner oxidant having an oxygen content of at least 30% vol are introduced into the calciner so as to generate either an oxidant-lean zone or a fuel-lean zone in the calciner located between the lowermost fuel inlet level and the lowermost oxidant inlet level of the calciner, between 50% and 100% by weight of the raw meal being supplied to the calciner upstream of and/or within the oxidant-lean, respectively the fuel-lean zone.

Oxy-calcination process

Heat exchanger presenting a first gas flow path containing a heat-regenerative packing and a separate second gas flow path containing a heat-conductive packing and use of same for heating a gas to be heated by means of heat recovered from a hot gas in a two-phase alternating heat-recovery process.

Heat exchanger and heat exchange method using same

A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m&#xb7;K), preferably greater than 3 W/(m&#xb7;K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.

Furnace with integrated heat recovery utilizing radiative recuperator for preheating combustion reactants using heat from flue gas

Method of operating a rotary furnace for the production of hydraulic binder so as to reduce ring formation therein, whereby the longitudinal temperature profile in the furnace is varied during furnace operation by injecting at least one fluid other than the main fuel(s), the primary oxidizer and hot air from the material cooler with at least one continuously or discontinuously varying injection parameter.

Hydraulic-binder rotary-furnace operation

The present invention relates to a heat exchanger for the supply of oxygen or of a gas mixture containing at least 50% oxygen, the temperature at the outlet of the exchanger not being below 300&#xb0; C., it preferably being above 400&#xb0; C., the oxygen or the oxygen-rich gas feeding one or more burners of a glass melting furnace, the heat of the combustion gases being used directly or indirectly to heat the oxygen or the oxygen-rich gas in the exchanger, in which the exchange power is between 20 and 300 kW, preferably between 40 and 250 kW and particularly preferably between 80 and 170 kW.

Oxygen heat exchanger

Method of operating a long direct-fired inclined counterflow rotary kiln for the thermal treatment of material and counterflow rotary kiln adapted for same, whereby material to be treated is introduced into the kiln at the inlet end and treated material is evacuated from the kiln at the outlet end, whereby a main combustion zone extends inside the kiln over a distance of &#xbc; to &#x2153; of the internal length Lof the kiln, whereby a supplementary combustion zone in which supplementary combustion takes place with an oxygen-rich oxidant extends inside the kiln over a distance from the inlet end of at most &#xbc; of the internal length L, and whereby no combustion takes place in a heat exchange zone located between the main combustion zone and the supplementary combustion zone.

Direct-fired inclined counterflow rotary kilns and use thereof

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.

Combustion method and installation with optimized energy recuperation

Method and burner for combusting a main fuel with a main oxidizer, whereby flows of the main fuel and the main oxidizer are injected via an injector end, comprising at least one metallic injector, said injector end being positioned in the upstream section of a main passage of a refractory block and whereby multiple jets are injected into the downstream section of the main passage to increase mixing and turbulence of the flows of the main fuel and the main oxidizer.

Method and combusting fuel and burner therefor

The present invention relates to the supplying power to burners for oxy-fuel combustion glass melting furnaces, including a fuel injecting means and a hot oxygen power supplying means, the dispensing of oxygen being carried out so as to develop a staged combustion, a fraction of the oxygen being concurrently injected into the fuel, said oxygen being supplied essentially without heating prior to the supplying thereof into the fuel injecting means.

Power supply for hot oxygen burner

A method for generating combustion by means of a burner assembly and corresponding burner assembly are disclosed. The burner assembly comprises a refractory block, a fuel supply system and an oxidant supply system. The refractory block defines along one plane Pat least one fuel passageway extending from a fuel inlet port to a fuel outlet port, and along a second plane Pat least one oxidant passageway extending from an oxidant inlet port to an oxidant outlet port, said first and second planes intersecting along a line that is beyond said outlet ports, said oxidant supply system comprising a pair of oxidant supply means, an inlet of the inner oxidant supply means being connected to a source of a first oxidant having a first oxygen concentration and an inlet of the concentric outer oxidant supply means being connected to a source of a second oxidant having a second oxygen concentration, the method having improved flexibility in oxygen concentration in the oxidant.

Method for generating combustion by means of a burner assembly and burner assembly therefore

The invention relates to a method for heating a material in a zone heated by combustion of a fuel with an oxidant by means of a oxyburner comprising an injector arranged within a block defining a chamber with a confinement index Iconf=(S/S')&#xd7;(L/L&#x2032;)&#xd7;(1/(1+a/100))=0.10; the fuel being injected into the burner chamber with a rate IF and the oxidant being injected into the burner chamber at a rate Iox such that 0.7=IF=3.6 et 0.3=Iox=5.1, provided that when Iox&#x3e;3.8 then IF=3.3.

Combustion method and system

During a heating phase, injection of a jet of fuel and oxidant (fuel annularly enshrouding oxidant or oxidant annularly enshrouding fuel) from a fuel-oxidant nozzle is combusted in a combustion space. During a transition from the heating phase to a distributed combustion phase, an amount of a secondary portion of either the fuel or oxidant is injected as a jet into the combustion space while the primary portion of that same reactant from the fuel-oxidant nozzle is decreased. At some point during the transition phase, a jet of actuating fluid is injected at an angle towards the jet of reactants from the fuel-oxidant nozzle and/or towards the jet of the secondary portion of reactant. The jet of primary portions of reactants and/or secondary portion of reactant is caused to be bent/deviated towards the other of the two jets. The staging of the secondary portion of reactant is increased until a desired degrees of staging and commencement of a distributed combustion phase are achieved.

Distributed combustion process and burner

Growing community of inventors

Saint Germain Les Corbeil, France

Remi Tsiava