CRYOGENIC REFLUX CONDENSER SYSTEM FOR PRODUCING OXYGEN-ENRICHED AIR

• Main Authors: LAU ANDREW CHUN-PONG, BILLINGHAM JOHN FREDRIC, NGUYEN TU CAM, BERGMAN JR. THOMAS JOHN
• Format: Patent
• Language: English; Korean
• Published: 30.08.2001
• Edition: 7
• 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

PURPOSE: A cryogenic reflux condenser system for producing oxygen enriched air is provided to improve efficiency compared to conventional reflux condenser systems, and to effectively produce lower purity nitrogen. CONSTITUTION: A method for producing oxygen-enriched air comprises: (A) dividing feed air into a first portion comprising from 25 to 45 percent of the feed air and into a second portion comprising from 55 to 75 percent of the feed air; (B) passing the first portion of the feed air through a first regenerator wherein first portion is cooled and cleaned of high boiling impurities, and passing the second portion of the feed air through a second regenerator wherein second portion is cooled and cleaned of high boiling impurities; (C) passing the cooled and cleaned first and second portions of the feed air into and up the condensing side of a reflux condenser having a condensing side and a vaporizing side and condensing a portion of upwardly flowing feed air to form a first vapor portion and a first liquid portion; (D) passing the first liquid portion into and down the vaporizing side of the reflux condenser and vaporizing a portion of downward flowing first liquid portion to form a second vapor portion and a second liquid portion; and (E) vaporizing second liquid portion and recovering the resulting vaporized second liquid portion as product oxygen-enriched air. 본 발명은 공급 공기가 2개의 축열기 시스템을 통해 동시에 처리된 후, 1개의 환류 응축기에서 생성물과 폐물로 분리되고, 환류 응축기로부터의 생성물과 폐물이 각각 축열기 시스템의 하나 및 다른 하나를 통해 처리되는 극저온 분리 장치를 제공한다.