Dry quenching exhaust gas generation and combustion heating method

The invention discloses a dry quenching exhaust gas generation and combustion heating method. The method comprises the following steps: (1), clean gas is combusted to generate exhaust gas, and the exhaust gas is cooled through heat absorption to become low-temperature exhaust gas; (2), coke is subjected to dry-quenching cooling through the low-temperature exhaust gas; (3), high-temperature combustible exhaust gas is generated in the dry quenching process; (4), the high-temperature combustible exhaust gas is introduced to a main inner flame path and a lower section auxiliary inner flame path; (5), air is replenished to the main inner flame path and the lower section auxiliary inner flame path to enable the high-temperature combustible exhaust gas to combust; (6), the high-temperature combustible exhaust gas in the lower section auxiliary inner flame path flows to the main inner flame path through bypassing after being subjected to primary air-replenishing combustion, so as to be mixed with the high-temperature