CONDENSER-REBOILER SYSTEM AND METHOD WITH PERFORATED VENT TUBES

• Main Authors: MAULIK R. SHELAT, KARL K. KIBLER, HANFEI TUO
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• 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

A system and method for the concurrent condensation of a nitrogen-rich vapor and vaporization of an oxygen-rich liquid in a distillation column based air separation unit is provided. The disclosed system includes a condenser-reboiler heat exchanger located between a lower pressure column and a higher pressure column and configured to condense a nitrogen-rich vapor from the higher pressure column and partially vaporize an oxygen-rich liquid from the lower pressure column. Within the condenser-reboiler heat exchanger, the nitrogen-rich vapor flows in an upward direction such that any non-condensables present in the nitrogen-rich vapor will accumulate proximate the upper portion or top of the condenser-reboiler modules where they can be easily removed through venting by means of a venting apparatus having a plurality of perforated tubes. 提供了种用于在基于蒸馏塔的空气分离单元中同时冷凝富氮蒸气和气化富氧液体的系统及方法。公开的系统包括冷凝器-重沸器热交换器，其位于较低压力塔与较高压力塔之间，且构造成冷凝来自较高压力塔的富氮蒸气，且部分地汽化来自较低压力塔的富氧液体。在冷凝器-重沸器热交换器内，富氮蒸气在向上方向上流动，使得存在于富氮蒸气中的任何非可冷凝物将累积为邻近冷凝器-重沸器模块的