US 2017/0370650 A1 · System And Method To Generate Steam By Mixing A Feed Water Stream With A Heating Medium

Abstract

A system and method to generate steam from a feed water stream does so in a liquid pool zone of a vessel as the stream comes into contact with a heating medium that is less volatile than the feed water stream. To keep the pool hot, the heating medium can be recirculated through a heater of a pump-around loop or a heater can be placed in the liquid pool. As the feed water stream is vaporized or partially vaporized, any solids or unvaporized water present in the feed water stream come out of the stream and move into the heating medium. These solids and the unvaporized water may be further removed from the heating medium in the pool or in the pump-around loop. The heat exchange surface does not contact the feed water to generate steam.

Claims18

Dependent claims

A method to generate steam from a feed water stream, the method comprising:

routing the feed water stream into a liquid pool zone of a vessel, the liquid pool zone including a heating medium, the heating medium being less volatile than the feed water stream and maintained at an operating temperature determined by vaporization requirements;
vaporizing at least a portion of the feed water stream due to contact with the heating medium in the liquid pool zone;
and
removing a vaporized portion of the feed water stream from a vapor separation zone of the vessel as steam;
wherein the interior volume of the vessel does not include a stripping zone for removal of an unvaporized portion of the feed water stream.

2 more elements

Dependencies are inferred from the claim text.

System And Method To Generate Steam By Mixing A Feed Water Stream With A Heating Medium

Life of this patent

System And Method To Generate Steam By Mixing A Feed Water Stream With A Heating Medium

Life of this patent

Abstract

Claims18