Process and device for evaporating large quantities of low boiling liquefied gases

Claim 1

In a process for continuously evaporating large amounts of low boiling liquefied gases by the transfer of heat produced by the combustion of a combustible gas, the improvement being effecting the heat transfer in a heater which consists essentially of a cylindrical combustion chamber having a radiation component and being free of a convection component, disposing a passage around the cylindrical combustion, conduction the gas to be evaporated through the passage, exposing the liquefied gas to a burner flame with radiation maximum upon entry into the passage, producing the burner flame with maximum radiation by at least one gas burner operated as a premix burner, utilizing the gas coming out of the nozzle to take up part of the air required for combustion from the room and directing the so-formed primary flame to strike a deflective plate mounted near the entrance to the combustion chamber and sucking the secondary air in behind the deflector plate to produce a flame with maximum radiation.

Claim 5

A device for evaporating large amounts of low boiling liquefied gases by the transfer of heat produced by the combustion of a combustible gas comprising a housing having a cylindrical combustion chamber formed with a radiation component and being free of a convection component, a passage in said housing around said chamber, an inlet at one end of said passage for the continuous admission of the liquefied gas therein, an outlet at the opposite end of said passage for the exit of the resultant gas therefrom whereby the gas to be continuously evaporated may be conducted therethrough, burner means in the general area of said inlet for having a flame with radiation maximum to which the liquefied gas is exposed upon entry into said passage, said passage being in the form of a spiral wound pipe, said burner means having means for the admission of primary air and secondary air including an outwardly directed tubular shaped guide piece extending from the end wall of the housing forming said chamber, a pair of concentric deflector rings mounted in said guide piece forming part of a cone shaped shell with an inclined annular slot directed at the wall of said chamber, and a circular array of gas burner nozzles directed at the inner surface of the inner of said deflector rings.

Claim 6

A device for evaporating large amounts of low boiling liquefied gases by the transfer of heat produced by the combustion of a combustible gas comprising a housing having a cylindrical combustion chamber formed with a radiation component and being free of a convection component, a passage in said housing around said chamber, an inlet at one end of said passage for the continuous admission of the liquefied gas therein, an outlet at the opposite end of said passage for the exit of the resultant gas therefrom whereby the gas to be continuously evaporated may be conducted therethrough, burner means in the general area of said inlet for having a flame with radiation maximum to which the liquefied gas is exposed upon entry into said passage, said passage being in the form of a spiral wound pipe, said burner means having means for the admission of primary air and secondary air including an outwardly directed tubular shaped guide piece extending from the end wall of the housing forming said chamber, a pair of concentric deflector rings mounted in said guide piece forming part of a cone shaped shell with an inclined annular slot directed at the wall of said chamber, and a circular array of gas burner nozzles directed at the inner surface of the inner of said deflector rings.