HOT-WATER BOILER Russian patent published in 2020 - IPC F24H1/10 

FIELD: heat exchange.

SUBSTANCE: invention relates to heat engineering, specifically to hot-water boilers for heating of rooms and hot water supply in conditions of shortage of hydrocarbon fuel. Hot-water boiler 1 comprises water heating control unit 6, air pump 7, gas fuel combustion chamber 8 and controlled shut-off valves. In chamber 8 low-temperature converter 11 of heated water is installed in hydrogen, gas burner 9, heat exchanger 10, ignition plug 11, air intake 12 and sensor 13 of burner flame 9. Low-temperature converter 11 is connected on feed water with heat exchanger cavity 10, and on hydrogen outlet - with gas burner 9 through corresponding shutoff valves. Converter 11 is made in the form of a block of serially connected annular or spiral pipes from refractory material filled with granules of low-temperature water catalyst. Low-temperature metal water catalyst used is an aluminium alloy and an alkali metal dehydrated hydroxide which destroys the aluminium oxide film when reacted with water. Shutoff valves comprises a block of controlled valves for ignition of furnace hot-water boiler methane and subsequent transition to furnace with synthesized hydrogen, control of synthesis of hydrogen, control of quality of fuel mixture, killing of hydrogen flame and blowdown of converter tubes for catalyst recovery into initial dried state.

EFFECT: invention allows reducing requirements of hot-water boiler in hydrocarbon fuel and reducing its cost by replacing part of carbon fuel with hydrogen synthesized from water and using catalysts from affordable natural materials.

4 cl, 1 dwg