PERFECTION OF CARBON DIOXIDE STATIONS USING NATURAL GAS

Abstract

A perfection of carbon dioxide stations is directly connected with increase of efficiency of processes, ways and cycles of manufacture of low-temperature liquid carbon dioxide. The analysis shows that for this purpose there are still significant reserves. So an application of fuel gas of an external source in carbon dioxide station allows to lower the charge of natural gas on 30 %. The use of carbon dioxide compressors realizing of cycle of high pressure and small low-temperature refrigerating machine, allows to lower the charge of the electric power on 25 %. A replacement of solution monoethanolamine on methyldiethanolamine can lower the electric power on 30 % connected with regeneration of an absorbent and maintenance of its circulation. Introduction of cogeneration plant in structure of carbon dioxide stations will allow to make the electric power and heat simultaneously. A reclaiming of all thermal streams in such complex with the help pf steam-turbine plant working on not water steams, will give still up to 30…40 % of the electric power. Removal of oxygen from fuel gases and full dehydration with clearing of  waste stream from an absorber allows to receive pure gaseous nitrogen as an additional product. An exergy efficiency of offered energotechnological complex achieves 40 % that testifies about its high efficiency.