Patent ID: 7415942
Filing Date: 2008-08-26
Classification: B01J,F01K,F22G,F28B,F28D

Abstract:
1. A steam-heating apparatus in which a heating section formed in a heat exchanger vessel is connected to a steam-containing control fluid supply pipe for receiving supply of steam containing high-pressure control fluid and is connected also to a condensate-recovering unit for collecting condensate from the heating section produced as a result of heating the heat exchange vessel, wherein said condensate-recovering unit includes a high-pressure control fluid inlet for receiving high-pressure control fluid for pressure-transporting and exhausting the condensate and a condensate returning outlet for exhausting the pressure-transported condensate; and the apparatus further comprises an ejector including a suction chamber connected to the heating section for evacuating the heating section, said ejector having an inlet connected to the condensate returning outlet and a valve means for connecting the heating section and the suction chamber of the steam ejector, wherein the valve means comprises a temperature-responsive valve which is opened in response to a drop in the temperature by the predetermined value in the heating section so as to allow suction of gas from the heating section into the suction chamber of the ejector.