Abstract
The present paper is concerned with some selected issues on the interactions between flue gas and salt-melts. Suggestions for improvements of materials are provided bearing in mind the development of new systems. The objective is to encourage the readers to join the MSB GmbH in discussions on the specific operation problems described in this paper. According to our experience, the knowledge of temperatures in the boiler walls and in the adjacent refractory is of high importance while considering the mechanisms of failures. Therefore this topic is discussed below.