A Hydrogen Combustor Based on Axial Vortex-to-column Mixing

Abstract

The present disclosure provides a hydrogen combustor based on an axial vortex pairing arrangement, including: a flame tube, the flame tube includes an outer ring and an inner ring; an outer casing, and the outer ring of the flame tube encloses an air circulation outer channel ; The inner casing is fixedly connected to the inside of the outer casing, and the inner casing and the inner ring of the flame tube form an air circulation inner channel; at least two axial vortex generators, and the axial vortex generator is a tetrahedral cavity The axial vortex generators are fixedly connected to the outer ring and the inner ring of the flame tube respectively, and are suitable for providing axial vortex to make fuel mixed and burned. The hydrogen combustor based on the axial vortex arrangement in this disclosure for blending proposes a design scheme combining the axial vortex and the tiny tangential jet. The tetrahedral structure is used to generate the axial vortex for blending. Compared with the non-reflux zone and low-velocity zone, the combustion chamber of the recirculator can effectively burn pure hydrogen, and overcome the problems of flashback, self-ignition and combustion instability.

Description

A hybrid hydrogen combustion chamber based on axial vortex row arrangement technical field [0001] The present disclosure relates to the field of gas turbines, and in particular, to a hybrid hydrogen combustor based on an axial vortex in-line arrangement. Background technique As the international and domestic requirements for low-carbon and clean energy are gradually improved, the pressure of carbon emission is increasing day by day, and hydrogen is used as an energy source. As the representative of low-carbon and clean energy in the future, it is of strategic significance to study the conversion and utilization of hydrogen energy. Hydrogen is a low-carbon clean energy, Using gas turbine to burn hydrogen is a typical hydrogen energy utilization method. Compared with natural gas fuel, hydrogen flame spreads faster. It is extremely fast and the flame surface is more prone to wrinkling, thermoacoustic oscillation and tempering, which leads to the It is difficult to burn...

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Problems solved by technology

The low-pollution combustion chamber modified based on this combustion technology can only burn part of the hydrogen, and it is difficult to burn high-concentration hydrogen and pure hydrogen

At the same time, the modified dry-low combustion chamber has a more complex structure, high design and test costs, and a large number of modifications to the combustion chamber will cause changes in the overall layout of the machine and increase research and development costs.

In addition, the existing pure hydrogen combustor adopts lean oil direct injection technology, which has high combustion temperature and high pollutant emissions; the structure of the transverse jet micro-mixing combustor is complicated, and the processing cost is high

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