DRAINAGE SYSTEM FOR COLD, MAINLY COMBUSTIBLE GASES Russian patent published in 2003 - IPC

FIELD: discharging toxic gases and vapors of cryogenic liquids from process equipment into atmosphere. SUBSTANCE: drainage system for cold, mainly combustible gases, such as methane, hydrogen, nitrogen, oxygen, and the like, has inlet and outlet headers and at least two discharge pipes communicating with them, outlet pipe communicating with outlet header through its inlet and with atmosphere, through its outlet; discharge pipes are provided with internal and external longitudinal ribs. Used as cold combustible gas is methane; Ratio of external heat-transfer surface area F of each discharge pipe to flow section area S F/S = 4200...2000 at discharge pressure of 0.1 2.0 MPa. EFFECT: enhanced mechanical and operating reliability of system. 15 cl, 2 dwg