C02 REMOVAL BY SOLID AMINE SORBENTS: 1. Experimental Studies of Amine Resin IR-45 With Regard to Spacecraft Applications 2. Computer Program for Predicting the TransientnPerformance of Solid Amine Sorbent Systems

摘要

The efforts under Task 3.1 have produced equilibrium data for water on IR-45 at 75°F, and for CO2 on IR-45 with various preloads of water at 75°F. During the course of experimentation, two significant characteristics of the sorbent were observed. First, the material is very slow in absorbing water and CO2. Second, prolonged exposure to vacuum and low-pressure degrades the capacity of the sorbent for CO2.nOn the subject of degradation, a study was performed on the effect of various sorbent cleanup procedures. It is considered that there is negligible degradation if the sorbent is subjected to only one vacuum bakeout at moderate temperature and to low pressure for only the period of time necessary to obtain one equilibrium isotherm. Both 150°F and 100°F vacuum bakeout temperatures are acceptable. It appears that the higher temperature, with respect to lower temperature bakeouts, slightly promotes C02 absorption capacity and slightly diminishes the capacity for water.