Energy -saving low temperature air separation equipment of making nitrogen

• Main Authors: Dong Huayan, Zhao Xingling, Zhai Hui, Ye Xiaojun, Dong Jia, Chu Bo
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2016
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; MIXTURES BY PRESSURE AND COLD TREATMENT; REFRIGERATION OR COOLING; WEAPONS

The utility model discloses an energy -saving low temperature air separation equipment of making nitrogen, including the cold box, establish rectifying column, main heat exchanger, pressure boost turboexpander in the cold box, establish the main condensing evaporator in the rectifying column upper end, the utility model discloses having increased pressure boost turboexpander and having organized, furthest avoids when utilizing expander output resulting in the problem that the nitrogen gas temperature is high owing to the nitrogen gas pressure boost, and reduce the pressure boost and held aftercooler, the abundant effectual energy that has utilized, the energy consumption reduction is showing very much, and can avoid defiling in a large number the problem that nitrogen expansion results in the increase of air quantity water capacity under the circumstances of not producing liquid, avoids increasing the equipment investment owing to product liquid. 本实用新型公开了节能型低温空气分离制氮设备，包括冷箱、设在冷箱内的精馏塔、主换热器、增压透平膨胀机、设在精馏塔上端的主冷凝蒸发