Reduction burner enabling separate occurrence of oxidation reaction and reduction reaction and synthesis gas recycling system using same

摘要

The present invention relates to a reduction burner enabling the separate occurrence of an oxidation reaction and a reduction reaction in one space in which the oxidation and reduction reactions are not isolated from each other, and to a synthesis gas recycling system using the reduction burner. The reduction burner can be obtained by installing, in a wall (101) of a reaction furnace (100), a plurality of reduction burners (200), each of which having a fuel supply hole (210) and a plurality of oxygen supply holes (220), so as to constitute burners of a reaction furnace, wherein each of the reduction burners (200) has a combustion chamber (202) provided at the front end of a head (201) thereof at a sufficient depth to completely remove the oxygen supplied in a smaller quantity than the quantity required for oxidizing the fuel following the ignition of the each of the reduction burners (200). Thus, in the combustion chamber (202), the oxidation (combustion) reaction of the oxygen occurs sufficiently, and, in the reaction furnace (100), there is no inflow of oxygen but incompletely combusted fuel (C, C0, H2), radiant heat, and the H2O molecules and CO2 molecules generated as a result of oxidation in the reduction burners flow in and are heated at a high temperature of 1200°C or above and only the reduction reaction by the H2O and CO2 molecules occurs. Also, the synthetic gas (a mixed gas of H2 and CO) which flows in following the incomplete combustion is collected again and reused, thereby posing no problem. Furthermore, a synthesis gas recycling system which collects and stores the synthesis gas generated in a reaction furnace and supplies same to reduction burners as a fuel for reuse can be obtained, by having, in addition to the reduction burner enabling the separate occurrence of an oxidation reaction and a reduction reaction in one space in which the oxidation and reduction reactions are not isolated from each other, the reduction burner comprising a reaction furnace (100) and reduction burners (200) each of which has a combustion chamber (202) provided at the front end of a head thereof at a considerable depth as described above: a cooling compressor (400) for cooling and compressing the gas collected through a mixed gas recovery line (121) which is connected to a mixed gas discharge hole (120); a storage tank (500) for receiving and storing the cooled and compressed mixed gas from the cooling compressor (400) and then supplying same to the reduction burners (200) of the reaction furnace (100); and an oxygen generator (600) for supplying oxygen to the oxygen supply holes (220).