Process and apparatus for generating steam

Claim 1

IN A BOILER, IN COMBINATION, AN UPRIGHT PRESSURE VESSEL; FLUID GUIDE MEANS IN SAID PRESSURE VESSEL FOR GUIDING A FLUID IN LIQUID FORM ALONG A FIRST PATH THROUGH A LOWER PORTION OF SAID VESSEL AND THEN IN GASEOUS FORM ALONG A SECOND PATH THROUGH AN UPPER PORTION OF SAID VESSEL; FIRST TUBULAR HEATING MEANS LOCATED ALONG SAID FIRST PATH IN SAID LOWER PORTION OF SAID VESEL FOR CHANGNG THE FLUID FROM ITS LIQUID TO ITS GASEOUS FORM WITH LIQUID PARTICLES SUSPENDED THEREIN; SEPARATOR MEANS AT THE JUNCTION OF SAID FIRST AND SAID SECOND PATH FOR RECEIVING THE FLUID IN GASEOUS FORM WITH LIQUID PARTICLES SUSPENDED THEREIN AND FOR MECHANICALLY SEPARATING THE LIQUID PARTICLES FROM THE FLUID SO AS TO AT LEAST PARTLY DRY THE GASEOUS FLUID; SECOND TUBULAR HEATING MEANS HAVING A MAJOR PORTION ALONG SAID SECOND PATH IN SAID UPPER PORTION OF SAID VESSEL FOR RECEIVING THE GASEOUS FLUID FROM SAID SEPARATOR MEANS AND COMPLETELY DRYING SAID FLUID AND ELONGATED PORTIONS EXTENDING ALONG SAID FIRST PATH THROUGH SAID LOWER PORTION OF SAID VESSEL AND BEING CONNECTED TO SAID MAJOR PORTION IN SAID UPPER PORTION OF SAID VESSEL; CONNECTING MEANS CONNECTING SAID TUBULAR HEATING MEANS AND SAID ELONGATED PORTIONS OF SAID SECOND TUBULAR HEATING MEANS IN PARALLEL WITH EACH OTHER IN THE REGION OF THE LOWER END OF SAID UPRIGHT PRESSURE VESSEL AND COMMUNICATING WITH A COMMON SOURCE OF HEAT; AND INSULATING MEANS INSULATING AT LEAST PART OF SAID ELONGATED PORTIONS FROM SAID FLUID IN LIQUID FORM AND FROM SAID FLUID IN GASEOUS FORM WITH LIQUID PARTICLES SUSPENDED THEREIN.