Gas scrubbing process for the rapid cooling and scrubbing of exhaust gases within a gas scrubber by bringing the exhaust gas directly into contact with a liquid coolant (Ke), wherein exhaust gases are introduced into the interior of the gas scrubber at an exhaust gas pressure (pa) and at an original exhaust gas temperature (Ta) through an exhaust gas supply duct and are mixed with the coolant (Ke) at a defined elevated pressure by admission by means of a coolant pump and at a defined elevated temperature by heating by means of a coolant heater after passing through a coolant supply duct, wherein the coolant (Ke) is present, in relation to the exhaust gas pressure (pa), in the form of a superheated liquid, the elevated temperature of which is greater than the boiling temperature of the coolant (Ke) at the exhaust gas pressure (pa), wherein the coolant (Ke), which is superheated with respect to the exhaust gas pressure (pa), is introduced into the gas scrubber through a coolant outlet nozzle in such a large quantity that the coolant (Ke) is at least partially explosively vaporised and atomised so that an exhaust gas-liquid coolant (Ke) mixture is formed in the gas scrubber, which mixture comprises liquid droplets with diameters of less than 50 micrometres, in particular less than 10 micrometres, whereupon, after first cooling, the exhaust gas-coolant mixture is passed through a heat extraction device, wherein a second coolant is sprayed from a second coolant outlet into the gas scrubber and the cooled exhaust gas-coolant mixture is further cooled by interaction with the second liquid coolant before it is removed from the gas scrubber from a cold gas outlet pipe, before the second coolant is pumped from a coolant reservoir by means of a coolant pump into and through a heat exchanger, wherein wherein inside the heat exchanger the waste heat of the second coolant is absorbed by a circulating third coolant and used, for example, as heating energy. wherein exhaust gases are introduced into the interior of the gas scrubber at an exhaust gas pressure (pa) and at an original exhaust gas temperature (Ta) through an exhaust gas supply duct and are mixed with the coolant (Ke) at a defined elevated pressure by admission by means of a coolant pump and at a defined elevated temperature by heating by means of a coolant heater after passing through a coolant supply duct, wherein the coolant (Ke) is present, in relation to the exhaust gas pressure (pa), in the form of a superheated liquid, the elevated temperature of which is greater than the boiling temperature of the coolant (Ke) at the exhaust gas pressure (pa), wherein the coolant (Ke), which is superheated with respect to the exhaust gas pressure (pa), is introduced into the gas scrubber through a coolant outlet nozzle in such a large quantity that the coolant (Ke) is at least partially explosively vaporised and atomised so that an exhaust gas-liquid coolant (Ke) mixture is formed in the gas scrubber, which mixture comprises liquid droplets with diameters of less than 50 micrometres, in particular less than 10 micrometres, whereupon, after first cooling, the exhaust gas-coolant mixture is passed through a heat extraction device, wherein a second coolant is sprayed from a second coolant outlet into the gas scrubber and the cooled exhaust gas-coolant mixture is further cooled by interaction with the second liquid coolant before it is removed from the gas scrubber from a cold gas outlet pipe, before the second coolant is pumped from a coolant reservoir by means of a coolant pump into and through a heat exchanger, wherein wherein inside the heat exchanger the waste heat of the second coolant is absorbed by a circulating third coolant and used, for example, as heating energy.