Development of Bench-Scaled Adsorption Type Steam Recovery System for Generating High Temperature Steam from Hot Waste Water

Abstract

The system to generate steam from low-grade waste heat is therefore required for the effective utilization of energy. In this study, a novel steam generation process using a direct heat exchange system with adsorbent-water pair is proposed. Contacting water with adsorbent makes excess water evaporate due to the release of adsorption heat from adsorbent. Because this system does not require any heat exchangers, increment in packing density of adsorbent particles in the reactor is expected. The bench-scaled adsorption type steam recovery system of the steam generators for 10-45kg-adsorbent/unit was developed. Operation condition of the steam generation process and the regeneration process of this system were investigated using this equipment of the one or three generator units. As a result, the steam at 170 C (maximum) and 150 C (average) could be generated continuously using the bench-scaled equipment of three steam generators.