Patent ID: 7089885
Filing Date: 2006-08-15
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 discharging the 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 for receiving the supply of the high-pressure control fluid and an outlet connected to the high-pressure control fluid inlet of the condensate recovery unit, and a valve for connecting the heating section and the suction chamber of the ejector when air has accumulated in the heating section wherein the valve comprises a temperature-responsive valve which is opened in response to a drop in the temperature by a predetermined value in the heating section so as to allow suction of gas from the heating section into the suction chamber of the ejector.