The present invention relates to a pure oxygen backfire flame burner, and more particularly, to a fuel burner that can produce a high radiation energy and a high heat transfer effect flame, and can reduce the fuel cost by using oxygen and environmentally friendly oxygen despreading flame, Forming flame burner to be supplied simultaneously through a single burner.According to an aspect of the present invention, there is provided a fuel supply system including a body, a fuel supply unit for supplying fuel to the body, an oxygen supply unit for supplying oxygen to the body, And a combustion block which is provided in the combustion chamber.;
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