# US 2017/0254264 A1 · Swirl-stabilised burner having an inertisation front and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0254264 A1 - Document ID: US20170254264A1 - Status: Published application - Kind: A1 - Application number: 15/060,482 - Filed: 2016-03-03 - Published: 2017-09-07 - Earliest claimed: 2016-03-03 - Assignees: Technische UniversitäT Berlin - Applicants: Technische Universität Berlin - Inventors: Sebastian Schimek; Panagiotis Stathopoulos; Christian Oliver Paschereit - Web page: https://patentgrep.com/patent/US20170254264A1 ## CPC - F23R 3/283: {Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances} - F23L 7/005: {Evaporated water; Steam} - F23L 7/007: {Supplying oxygen or oxygen-enriched air} - F23R 3/14: by using swirl vanes - F23R 3/28: characterised by the fuel supply (burners F23D) - F23C 2900/9901: Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel - F23L 2900/07009: Injection of steam into the combustion chamber - F23R 2900/00002: Gas turbine combustors adapted for fuels having low heating value [LHV] - Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT] - Y02E 20/34: Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery - F23R: GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C10/16) - F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES - F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A burner for producing a stabilized flame with an inertisation front upstream from the stabilized flame includes a swirl generator and an inlet device with a passage therethrough. The swirl generator swirls an inert process medium about a swirl axis in a flow direction and one or more openings in the inlet device provide one or more partial mass flows containing combustion educts. The inert process medium inhibits combustion of the combustion educts through the inertisation front to displace the stabilized flame from the one or more openings. ## Claims ### Claim 1 A burner for making a combustion product in order to supply to a combustion chamber downstream of the burner a fuel medium, an oxidation medium, and a process medium having inerting properties such that a swirl-stabilised flame having an inertisation front is formed in the combustion chamber, the burner comprising: at least one swirl generator configured to swirl the process medium about a swirl axis extending in a flow direction; an inlet device having a passage in fluid communication with the at least swirl generator; and a plurality of openings downstream in the flow direction from the at least one swirl generator, the plurality of openings configured to provide one or more partial mass flows including at least the fuel medium and the oxidation medium to the passage of the inlet device. ### Claim 2 (depends on 1) The burner according to claim 1, further comprising an injection device, wherein the plurality of openings are located in the injection device. ### Claim 3 (depends on 1) The burner according to claim 1, wherein the plurality of openings are arranged radially about the swirl axis. ### Claim 4 (depends on 1) The burner according to claim 1, wherein the inlet device includes a plurality of passages. ### Claim 5 (depends on 1) The burner according to claim 1, wherein the passage is annular. ### Claim 6 (depends on 1) The burner according to claim 1, wherein the swirl generator determines a swirl number of the one or more partial mass flows in the passage. ### Claim 7 (depends on 1) The burner according to claim 1, wherein the burner comprises a plurality of passages. ### Claim 8 (depends on 1) The burner according to the claim 1, wherein the one or more partial mass flows further include the process medium. ### Claim 9 A method for combusting a combustion medium in which a fuel medium, an oxidation medium, and a process medium having inerting properties are supplied to a burner of a downstream combustion chamber such that a stabilised flame is formed in the combustion chamber, the method comprising: swirling the process medium in a passage with a swirl generator about a swirl axis in a flow direction; providing one or more partial mass flows to the passage through one or more openings in the passage; mixing the one or more partial mass flows in the process medium to produce a combustion medium; combusting the combustion medium downstream a front distance from the openings; and establishing an inertisation front displacing a flame the front distance from the openings in the flow direction. ### Claim 10 (depends on 9) The method according to claim 9, wherein the fuel medium and the oxidation medium are mixed with the process medium at different longitudinal locations in the flow direction. ### Claim 11 (depends on 9) The method according to claim 9, wherein at least one of the fuel medium and the oxidation medium is pre-mixed with the process medium to form a process medium-duct mixture before providing the process medium-duct mixture in the one or more partial mass flows. ### Claim 12 (depends on 9) The method according to claim 9, wherein providing the one or more partial mass flows in the process medium includes providing the one or more partial mass flows downstream in the flow direction in an inlet device from the swirl generator. ### Claim 13 (depends on 9) The method according to claim 9, wherein the inertisation front has an inner inertisation zone in the flow direction between the most downstream one or more openings and the fuel medium and oxidation medium converging in a flame foot of the flame. ### Claim 14 (depends on 9) The method according to claim 9, further comprising branching off the fuel medium or the oxidation medium through a bypass. ### Claim 15 (depends on 14) The method according to claim 14, wherein branching off the fuel medium or the oxidation medium further comprises cooling the fuel medium or the oxidation medium in the bypass. ### Claim 16 (depends on 9) The method according to claim 9, further comprising thermally controlling a total mass flow of the combustion medium by adding a cooling medium. ### Claim 17 A burner for making a combustion product in order to supply to a combustion chamber downstream of the burner a fuel medium, an oxidation medium, and a process medium having inerting properties such that a swirl-stabilised flame having an inertisation front is formed in the combustion chamber, the burner comprising: at least one swirl generator configured to swirl the process medium about a swirl axis extending in a flow direction; an inlet device having at least a first passage and a second passage in fluid communication with the at least swirl generator; and a plurality of openings downstream in the flow direction from the at least one swirl generator, the plurality of openings configured to provide one or more partial mass flows including at least the fuel medium and the oxidation medium to the passage of the inlet device. ### Claim 18 (depends on 17) The burner according to claim 17, wherein the first passage and second passage are concentric annular passages. ### Claim 19 (depends on 17) The burner according to claim 17, wherein the at least one swirl generator swirls the process medium about a swirl axis in a first swirl direction in the first passage and about the swirl axis in an opposing second swirl direction in the second passage. ### Claim 20 (depends on 17) The burner according to claim 17, wherein at least one of the plurality of openings is radially positioned between the first passage and second passage.