6results about "Pulsating combustion" patented technology

The invention discloses a clean combustion method of biomass fuel, which is characterized in that a Ni-Co-Ce-Zn-O / Al2O3 quaternary gradient structured catalyst is designed and prepared for the first time, and abundant oxygen vacancies and redox cycle networks are constructed through multi-metal component atomic-scale compounding; a'porous carrier-active layer-surface modification layer 'gradient configuration is adopted, and catalytic activity, adhesive strength and inactivation resistance are synergistically regulated and controlled on a nano-micron scale. A special sol-gel and segmented coating process is combined, the catalyst forms a uniform and firm active coating with a high specific surface area on the surface of the metal wire mesh cage, and excellent structural stability and catalytic durability are still kept under the conditions of high temperature, vibration and electric field-sound field coupling. According to the catalyst system, the soot ignition activity and the low-temperature conversion efficiency of CO and nitrogen oxide are remarkably improved, intrinsic synergy with an electric field and a sound field is achieved through the dielectric property and the surface dynamic response behavior of the catalyst system, and a catalysis-electricity-sound ternary coupling enhanced reaction microenvironment is formed.

The invention relates to the field of power engineering and can be used in heating systems, more particularly in water heaters or boilers, in disposal systems fueled by the combustion of associated gas, and in electrical energy generating systems. A pulse combustion apparatus comprises a combustion chamber 14, at least one resonant channel 28 connected to the combustion chamber 14, a device 15 for removing heat which is linked to the combustion chamber and to the resonant channel and which consists of at least one chamber and / or at least one tube for a heat-exchanging agent 16. A device for supplying air and combustible gas, which is connected to the combustion chamber 14, comprises at least one gaseous medium nonreturn valve 17 and at least one guard chamber 18 of said valve 17. The at least one gaseous medium nonreturn valve 17 is directly or indirectly linked to the device 15 for removing heat via a vibration isolator 19, 24.

To reduce variations in particle circulation rate even with a variation in inter-layer height difference at a circulating fluidized bed.SOLUTION: The present invention provides a method for the operation of a circulating fluidizer in which particles move between a first fluidized bed and a second fluidized bed. Into a loop seal provided between the first fluidized bed and the second fluidized bed, introduced is vibrated air by means of a gas feeder, which does not introduce air from outside.SELECTED DRAWING: Figure 4

1. A mixing device (1) for mixing an air stream with a liquid or gaseous highly reactive fuel, such as hydrogen, comprises an elongated revolution body (10) having an air inlet end (11), an air outlet end (12), and a hollow central space (13) that extends through the revolution body (10) along its elongation. The mixing device (1) comprises multiple fuel channels (14) arranged at the revolution body (10) and distributed around the perimeter of the revolution body (10), wherein the fuel channels (14) extend between the air inlet end (11) and the air outlet end (12) of the revolution body (10), wherein the fuel channels (14) have fuel inlet openings (15) near or at the air inlet end (11) of the revolution body (10) and fuel injection orifices (16) at the air outlet end (12) of the revolution body (10).

The application discloses a low-concentration gas coupled biomass self-excited oscillation combustion system and combustion method, which comprises a pipe body combustor, a gas supply unit, a biomass supply unit and a secondary air supply unit, and contains an oxygen-deficient combustion zone and an oxygen-rich combustion zone; the gas supply unit and the biomass supply unit supply low-concentration gas and biomass fuel to the oxygen-deficient combustion zone respectively; the oxygen-deficient combustion zone is a heat source and forms a vibration source capable of generating a self-excited oscillation wave along the pipe length direction; the oxygen-deficient combustion zone and the oxygen-rich combustion zone are alternately switched between positive pressure and negative pressure states under the action of self-excited oscillation; under the state of negative pressure of the oxygen-deficient combustion zone, the heat of the oxygen-rich combustion zone flows back to the oxygen-deficient combustion zone to preheat the low-concentration gas and compensate the temperature of the oxygen-deficient combustion zone; the self-excited oscillation combustion principle is used to take biomass waste and low-concentration gas as fuel, and the two are synergistically coupled to combust, so that the low-concentration gas and the biomass waste are efficiently utilized.

The invention discloses a clean combustion method for non-premixed combustion, which is characterized in that an MOF (Metal Organic Framework) derived monatomic catalyst, a high-voltage electrostatic field and low-frequency acoustic excitation are deeply fused, a space-time coupled multi-field synergistic environment is formed in a combustion cavity, and atomic-scale dispersed active sites provide ultrahigh intrinsic catalytic activity; the electrostatic field drives soot particles and polar pollutant molecules to directionally migrate and be enriched on the surface of the catalyst, and meanwhile, the interface charge transfer process is enhanced; the acoustic flow field significantly optimizes flow field distribution, continuously updates a gas-solid boundary layer on the surface of the catalyst, and realizes dual reinforcement of mass transfer and reaction kinetics. According to the method, the bottleneck of a traditional single or double-element technology is broken through, the soot removal efficiency is larger than or equal to 99%, the CO removal efficiency is larger than or equal to 95%, the system response time is shortened to the second level, stable and efficient operation can be kept within the wide load range, the inhibition efficiency of soot generated by liquid fuel combustion is 99% or above, and the inhibition efficiency of CO and nitric oxide can reach 99% or above.