US20090017405A1 - Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging - Google Patents

Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging Download PDF

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Publication number
US20090017405A1
US20090017405A1 US12/088,437 US8843706A US2009017405A1 US 20090017405 A1 US20090017405 A1 US 20090017405A1 US 8843706 A US8843706 A US 8843706A US 2009017405 A1 US2009017405 A1 US 2009017405A1
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United States
Prior art keywords
gas
scavenging
oxidation
oxidizing
producing
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Abandoned
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US12/088,437
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English (en)
Inventor
Didier Pavone
Etienne Lebas
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Assigned to INSTITUT FRANCAIS DU PETROLE reassignment INSTITUT FRANCAIS DU PETROLE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEBAS, ETIENNE, PAVONE, DIDIER
Publication of US20090017405A1 publication Critical patent/US20090017405A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99008—Unmixed combustion, i.e. without direct mixing of oxygen gas and fuel, but using the oxygen from a metal oxide, e.g. FeO
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Definitions

  • the present invention relates to the field of energy production, gas turbines, boilers and furnaces, notably for the petroleum industry, the glass-making industry and in cement plants.
  • the field of the invention also covers the use of these various means for producing electricity, heat or steam.
  • the field of the invention is more particularly the devices and the methods allowing, through oxidation-reduction reactions of an active phase, to produce a hot gas by means of a hydrocarbon or a hydrocarbon mixture and to isolate the carbon dioxide produced so as to be able to capture it.
  • the invention also applies to the field of hydrogen or oxygen production.
  • One of the techniques that can be used for capturing carbon dioxide consists in carrying out oxidation-reduction reactions of an active phase so as to decompose the combustion reaction commonly used into two successive reactions:
  • an oxidation reaction of the active phase with air allows, through the exothermic nature of the oxidation, to obtain a hot gas whose energy can be used,
  • a reduction reaction of the active phase thus oxidized by means of a reducing gas then allows to obtain a reusable active phase, as well as a gaseous mixture essentially comprising carbon dioxide and water.
  • Document FR-2,846,710 describes a real rotary reactor in the sense that the reactor exhibits a material rotation between a stationary part and a moving part so as to carry out successive oxidation, then reduction reactions of an active mass.
  • These specific means essentially consist of a system of valves allowing to deliver to each module, according to the time period considered, the oxidizing gas, the scavenging gas or the reducing gas. These means are specific to each module.
  • the object of the invention is to provide an optimized method for implementing a device allowing oxidation and reduction reactions of an active phase in order to produce a hot gas by means of a hydrocarbon, or a mixture of hydrocarbons, and to jointly isolate the carbon dioxide produced so as to readily capture it.
  • the invention thus relates to a method for producing a hot gas by oxidation of an active material contained by at least one reaction module working as a function of time successively in oxidation, scavenging and reduction stages by contacting through successive circulation respectively of an oxidizing gas, a scavenging gas or a reducing gas.
  • the contacting stages by circulation of the oxidizing and scavenging gas are separated by a flow interruption of predetermined duration of the oxidizing gas prior to circulating the scavenging gas.
  • the flow interruption duration can be determined so as to increase the contacting time of the oxidizing gas with the active material.
  • the rate of circulation of the scavenging gas can be higher than the rate of circulation of the oxidizing gas.
  • the oxidation-reduction cycle of the oxido-reducing active mass comprises a stage of injection of the combustible gas. During this stage, the combustible gas comes into contact with the oxido-reducing active mass that is in a partly oxidized state. The oxygen collected by this mass is transferred to the gas that oxidizes while releasing carbon oxides and water.
  • the devices according to document FR-2,846,710 or FR-04/08,549 mentioned here by way of reference comprise a set of reaction modules, each module comprising an active material working as a function of time successively in an oxidation, scavenging and reduction stage by contacting respectively with an oxidizing, scavenging or reducing gas.
  • Contacting with the active mass is achieved using either a feed system specific to each module, able to receive as a function of time an oxidizing, scavenging or reducing gas, or a rotary set rotating with respect to a distribution set.
  • the gas oxidation reaction (and therefore the reduction of the oxido-reducing mass) is mainly located near the inlet of the module in form of a monolith for example.
  • this oxidation-reduction moves downstream from the module since the upstream oxido-reducing mass has been reduced and therefore no longer contains the oxygen required for combustion.
  • the applicant has observed a problem relative to unburnt combustible gases.
  • the gases are injected at about 500° C., at a pressure of 30 bars.
  • the standard cycle considered comprises the following successive injection durations: 3 s air-0.5 s steam-1.5 s methane-0.5 s steam.
  • the respective injection rates for the air, steam and methane are: 20 m/s, 5 m/s and 1 m/s.
  • the steam is introduced to clean the channel from the oxidizer or the fuel prior to the next introduction of oxidizer or fuel.
  • curve 1 shows the flow rate of combustible gas injected and curve 2 the amount of unburnt gas (in mol/s as ordinate) as a function of time (as abscissa), for a channel. It can be noted that, during the gas oxidation stage (between the times 14.5 and 16 s), a first amount of unburnt gas appears at the channel outlet (curve 2 ). Then, a “puff” of unburnt gas is produced between 16 s and 16.5 s as illustrated by peak 3 .
  • a method or a process that reduces by about 25% the amount of unburnt gas present in said unburnt gas “puff” (peak 3 of FIG. 1 ).
  • a short period during which nothing is injected is therefore added between the end of the combustible gas injection stage and the next stage of scavenging by steam.
  • the combustible gas trapped in the channel then has the time to oxidize on the oxido-reducing mass, thus reducing the amount of unburnt gas.
  • FIG. 2 illustrates the new cycle of the process according to the invention.
  • Curve 1 shows as above the rate of injection of the fuel in a cycle and identical conditions for the standard cycle, except for the addition of a 0.5-s injection interruption after injection of the fuel and before injection of the scavenging steam. This pause is shown by reference number 4 in FIG. 2 .
  • curve 2 ′ shows the unburnt flow rate during the combustion and peak 3 ′ corresponds to the unburnt gas “puff”.
  • Table 1 synthesizes the results corresponding to the cycle according to the invention, illustrated by FIG. 2 .
  • the last line of the table gives the total amount of unburnt gas for a cycle, i.e. the integral below curves 2 + 3 and 2 ′+ 3 ′.
  • the cycle according to the invention provides an overall unburnt gas reduction of 21% per cycle.
  • the goal of the invention being however to act upon the volume of said “puff”, the contribution of this invention will be clearer by comparing its volume, according to the invention or according to the standard case. This comparison is shown in the second line of the table. It appears that the invention reduces the volume of unburnt gas of the puff by 26%.
  • the present invention advantageously applies to the devices described in documents FR-2,846,710 or FR-04/08,549.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treating Waste Gases (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Carbon And Carbon Compounds (AREA)
US12/088,437 2005-09-29 2006-09-28 Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging Abandoned US20090017405A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0509969 2005-09-29
FR0509969A FR2891312B1 (fr) 2005-09-29 2005-09-29 Procede pour la production d'un gaz chaud par oxydation comprenant un delai avant balayage
PCT/FR2006/002194 WO2007036636A2 (fr) 2005-09-29 2006-09-28 Procede pour la production d'un gaz chaud par oxydation comprenant un delai avant balayage

Publications (1)

Publication Number Publication Date
US20090017405A1 true US20090017405A1 (en) 2009-01-15

Family

ID=36617181

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/088,437 Abandoned US20090017405A1 (en) 2005-09-29 2006-09-28 Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging

Country Status (5)

Country Link
US (1) US20090017405A1 (fr)
EP (1) EP1934520A2 (fr)
JP (1) JP2009509904A (fr)
FR (1) FR2891312B1 (fr)
WO (1) WO2007036636A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010055559A1 (en) * 2000-03-17 2001-12-27 Snamprogetti S.P.A. Process for the production of hydrogen
US6833013B1 (en) * 2000-01-13 2004-12-21 Snamprogetti S.P.A. Process for the production of synthesis gas
US20050232859A1 (en) * 2004-03-23 2005-10-20 Eni S.P.A. Process for the production of hydrogen and the co-production of carbon dioxide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9720727D0 (en) * 1997-10-01 1997-11-26 Ici Plc Exothermic process
US6475454B1 (en) * 1999-01-14 2002-11-05 Ge Energy & Environmental Research Corporation Thermally limited selective oxidation methods and apparatus
FR2846710B1 (fr) * 2002-11-06 2006-08-04 Inst Francais Du Petrole Dispositif et procede pour la production d'un gaz chaud par oxydation d'un materiau actif

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6833013B1 (en) * 2000-01-13 2004-12-21 Snamprogetti S.P.A. Process for the production of synthesis gas
US20010055559A1 (en) * 2000-03-17 2001-12-27 Snamprogetti S.P.A. Process for the production of hydrogen
US20050232859A1 (en) * 2004-03-23 2005-10-20 Eni S.P.A. Process for the production of hydrogen and the co-production of carbon dioxide

Also Published As

Publication number Publication date
FR2891312A1 (fr) 2007-03-30
EP1934520A2 (fr) 2008-06-25
WO2007036636A3 (fr) 2007-05-24
JP2009509904A (ja) 2009-03-12
FR2891312B1 (fr) 2010-12-17
WO2007036636A2 (fr) 2007-04-05

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Owner name: INSTITUT FRANCAIS DU PETROLE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PAVONE, DIDIER;LEBAS, ETIENNE;REEL/FRAME:021496/0701

Effective date: 20080310

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION