DEVICE FOR COMBUSTION OF FUELS AND HEATING OF PROCESS MEDIA, AND FUEL COMBUSTION METHOD Russian patent published in 2014 - IPC F23C13/04 F24H1/43 

FIELD: heating.

SUBSTANCE: invention refers to devices and methods of fuel combustion in heat-generating plants and can be used for heating of gaseous, liquid and suspension process media due to combustion of gaseous or liquid evaporating fuel. The device for fuel combustion and heating of process media includes catalytic material (catalyst) for flameless fuel combustion at direct contact with an oxidiser, an air heater, a heat exchanger for heating of process medium with combustion products, and an induced-draft fan. The device consists at least of two heat exchange sections, for example of a spiral and radial type, which include a catalyst, and each of which has a cylindrical shell, an annular gap adjacent to the shell for the oxidiser injection, an annular fuel header-distributor adjacent to the shell, which is located on outer or inner sides of the shell, a fuel mixture gas duct located coaxially and filled with a head piece, an annular mixing chamber of the oxidiser - with fuel, which is located between the gas duct and the shell, oxidation (combustion) products gas duct adjacent to the shell of the unit, as well as a unit of catalytic heat exchange elements, which is located between the gas duct of fuel mixture and gas duct of oxidation products, which has slit gaps between heat exchange elements for passage of fuel mixture and combustion products, which are filled with a granulated catalyst of fuel oxidation, and closed inner space of heat exchange elements for passage of heated medium; besides, the unit of catalytic heat exchange elements is provided with a branch pipe and a header-distributor for supply of heated process medium, as well as a header and an outlet branch pipe of heated process medium; besides, the device is equipped with a start-up air heating device.

EFFECT: simpler device, lower metal consumption, lower power consumption and larger range of fuels.

2 cl, 3 dwg