TECHNOLOGICAL HEATER Russian patent published in 1999 - IPC

FIELD: device used for heating liquids and gases; various industries; preheating gas at inlets of gas distributing stations for prevention of hydrate formation process. SUBSTANCE: heater includes heating medium source, shell-and-tube heat exchanger with radiation section shielded by heat exchange tubes located at equal distance relative to inner wall of shell, smoke stack, collectors for inlet and outlet of medium being heated. When burner device is used as heating source, inner convection bank of heat exchange tubes is located after radiation section forming the furnace volume; tube banks are equidistant by radii which are coaxial relative to radius of location of shields tubes; all heat exchange tubes are double tubes; outer tubes have blind ends directed towards burner device and at other end working cavities of each heat exchange tube are communicated with inlet and outlet collectors by means of two detachable branch pipes beyond smoke duct. Besides that, swirler for medium being heated is mounted in circular clearance formed by inner and outer tubes; this is made in form of spiral wound on inner tube whose length is no less than length of radiation section which in its turn shall be no less than carry of spray of burner device. EFFECT: enhanced reliability. 2 cl, 1 dwg