METHOD OF GENERATION OF ELECTRIC ENERGY, WATER STEAM AND CARBON DIOXIDE FROM HYDROCARBON RAW MATERIAL Russian patent published in 2003 - IPC

FIELD: chemical industry; power engineering. SUBSTANCE: flow 1 of natural gas is heated and compressed and is fed via pipe line 2 to saturator 3 where it is mixed with water 4 delivered from apparatus 14 and with fresh demineralized water from line 4c.Mixture thus obtained is fed to autothermal reactor in form of flow 5. Compressed air is fed to the same reactor via pipe line 7. Pre-reforming reactor may be provided before autothermal reactor. At least part of air from flow 29 may be preliminarily compressed to pressure required for introduction into this reactor. Synthesis gas from autothermal reactor 6 is cooled in steam generator 9 wherefrom it is fed to CO conversion unit 12 in form of flow 11. Gas mixture 13 thus obtained is cooled in apparatus 14 and is fed to CO₂ absorber 16 in form of flow 15 and then to desorber 19 in form of flow 18. Regenerated absorbent is returned to absorber 16 via pipe line 20. Water removed from CO₂ flow 21 in apparatus 22 is recirculated in saturator 3. Highly concentrated CO₂ flow is compressed and is removed via line 23. Gas flow 17 from absorber 16 is used as fuel in gas turbine 24 to which air 25 is fed. Part of flow 17 may be used in fuel element for generation of electric energy. Waste gas 26 from turbine 24 transfers heat to water in steam generator 27. Water steam is overheated in heat exchanger 30 and is fed to electric generator 32 in form of flow 31. Waste gas 28 from steam generator 27 may be recirculated to autothermal reactor 6 or may be fed to turbine 24 together with air 25. Synthesis gas from flow 11 may be taken for synthesis of methanol and raw material for synthesis of ammonium may be taken from line 17. Proposed method makes it possible to generate electric energy at production of highly concentrated CO₂, and amount of nitric oxides does not exceed limits stipulated for gas turbines. Gases thus formed are used as raw material for synthesis of methanol and ammonium. EFFECT: facilitated procedure; enhanced economical efficiency. 2 dwg, 1 tbl, 1 ex