Abrégé

The invention relates to a method for waste-heat recovery comprising the following steps: providing a first process unit (10), which requires thermal energy, wherein the first process unit (10) comprises a heating burner (15, 16), which is fluidly connected to a fuel supply line (100, 101, 102) and to a combustion-air supply line (112, 113); providing a second process unit (20), in which thermal energy is generated, wherein the second process unit (20) comprises a combustion furnace (21), which is designed to burn waste materials (201) containing sulfur compounds; burning waste materials (201) containing sulfur compounds to generate hot combustion exhaust gas (210) which contains sulfur compounds; discharging the hot combustion exhaust gas (210) from the second process unit (20) and introducing the combustion exhaust gas (310) into a waste-heat recovery device (3) comprising a waste-heat exchanger (31, 32); transferring thermal energy from the combustion waste gas (310) by the waste-heat exchanger (31, 32) to a fluid which is used as an energy source in the first process unit (10), wherein a gas temperature (36, 37) of the combustion exhaust gas (311, 312) downstream of the waste-heat exchanger (31, 32) is set so as not to be below a dew-point temperature of the sulfur compounds in the combustion waste gas (311, 312).

Classes IPC  ?

• F26B 23/00 - Chauffage
• F23G 5/46 - Récupération de la chaleur
• F26B 23/02 - Chauffage utilisant un chauffage par combustion

Abrégé

The invention relates to a method for waste-heat recovery comprising the following steps: providing a first process unit (10), which requires thermal energy, wherein the first process unit (10) comprises a heating burner (15, 16), which is fluidly connected to a fuel supply line (100, 101, 102) and to a combustion-air supply line (112, 113); providing a second process unit (20), in which thermal energy is generated, wherein the second process unit (20) comprises a combustion furnace (21), which is designed to burn waste materials (201) containing sulfur compounds; burning waste materials (201) containing sulfur compounds to generate hot combustion exhaust gas (210) which contains sulfur compounds; discharging the hot combustion exhaust gas (210) from the second process unit (20) and introducing the combustion exhaust gas (310) into a waste-heat recovery device (3) comprising a waste-heat exchanger (31, 32); transferring thermal energy from the combustion waste gas (310) by the waste-heat exchanger (31, 32) to a fluid which is used as an energy source in the first process unit (10), wherein a gas temperature (36, 37) of the combustion exhaust gas (311, 312) downstream of the waste-heat exchanger (31, 32) is set so as not to be below a dew-point temperature of the sulfur compounds in the combustion waste gas (311, 312).

Classes IPC  ?

• F26B 23/00 - Chauffage
• F26B 23/02 - Chauffage utilisant un chauffage par combustion
• F23G 5/46 - Récupération de la chaleur
• F23L 15/04 - Aménagements des récupérateurs