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PROCESS FOR COPRODUCTION OF ELECTRICITY AND HYDROGEN-RICH GAS BY VAPOREFORMING HYDROCARBON CUTTING WITH CALORIES BY IN SITU HYDROGEN COMBUSTION
PROCESS FOR COPRODUCTION OF ELECTRICITY AND HYDROGEN-RICH GAS BY VAPOREFORMING HYDROCARBON CUTTING WITH CALORIES BY IN SITU HYDROGEN COMBUSTION
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机译:原位氢燃烧汽化含热量的碳氢化合物切割制取电力和富氢气体的方法
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摘要
The production of synthesis gas by steam reforming of a hydrocarbon charge in a steam reforming reactor and co-production of electrical energy, comprises obtaining the intake of calories for the steam forming reaction by a part of combustion effluent (6) of dilute hydrogen. The combustion is carried out in the interior of the reactor-exchanger. Air necessary for combustion is compressed to an absolute pressure of 0.4-4 MPa by a compressor unit. The effluent from the combustion having a dilution circuit is recycled to enter the dilute hydrogen (5) into the reactor-exchanger. The production of synthesis gas by steam reforming of a hydrocarbon charge in a steam reforming reactor and co-production of electrical energy, comprises obtaining the intake of calories for the steam forming reaction by a part of combustion effluent (6) of dilute hydrogen. The combustion is carried out in the interior of the reactor-exchanger. Air necessary for the combustion is compressed to an absolute pressure of 1.5-2 MPa by a compressor unit. The effluent from the combustion having a dilution circuit is recycled to enter the dilute hydrogen (5) into the reactor-exchanger and to limit the oxygen content to less than 10 mol.%. in the reactor-exchanger. The other part of the combustion effluent is introduced in a post combustion chamber. The resulting flow of the combustion with hydrogen in the post combustion chamber is slacked in a turbine, which provides energy part necessary to the compressor and induces an alternator ensuring the co-production of electric power. The combustion effluent is reintroduced into the reactor exchanger at a temperature close to the effluent exit. The temperature difference of the effluents is lower than 5[deg]C. The proportion of the recycled combustion effluent upstream of the reactor-exchanger is 20-90 mol.% of the combustion effluent. The recycled combustion effluent (60-90 mol.%) is introduced into the reactor-exchanger when mixed with the air combustion (3). The combustion effluent is divided into a first flow introduced into the combustion chamber, and a second flow cooled in a first exchanger using a cooling fluid, in a second exchanger using an exterior cooling fluid and in an air cooler (9). The outgoing flow of the air cooler is introduced into a separation ball without water. A pressure level identical to the pressure of the reactor-exchanger is heated and reintroduced in the reactor-exchanger under a form of flow at 1-5[deg]C. The combustion effluent without water is recompressed in a compressor with a pressure level higher than the reactor exchanger pressure, then is heated in the exchanger and introduced into a postcombustion chamber using hydrogen as fuel, to 1200[deg]C, and slacked in a relaxation turbine identical to the reactor exchanger before reintroducing the effluent into the reactor exchanger at a temperature close to that of the combustion effluent. Introducing air supply in the compressor to produce a compressed air to the first flow supplying the first combustion chamber. The effluent of the combustion chamber is introduced into the relaxation turbine to form a flow of compressed air. The combustion circuit is not generating carbon dioxide discharge.
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