The present invention relates to a heat exchanger system for incorporation in a deodorizer. The heat exchanger system comprises longitudinal heat transfer means, inlet distribution headers, outlet collector headers, spacers having holes to support the longitudinal heat transfer means, a compensator, and two or more support devices. The longitudinal heat transfer means are guided through the holes of the spacers and arranged in bundles, and each of the bundles is attached to an inlet distribution header as well as to an outlet collector header, and at least some of the spacers are mounted on at least one support device. The present invention relates also to a semi-continuous deodorizer having one or more of such heat exchanger systems, and to a use of the deodorizer.