Non-segmented coke oven double-circulation heating system

The invention discloses a non-segmented coke oven double-circulation heating system. The non-segmented coke oven double-circulation heating system comprises a coke oven basement waste gas circulation system and a chemical VOCs tail gas introduction waste gas circulation system. Zero emission of VOCs tail gas of a chemical product recovery system is achieved, meanwhile, low-nitrogen combustion is achieved through waste gas circulation and air depletion of a coke oven combustion system, the content of nitric oxide in coke oven flue gas is reduced, the high-direction uniformity of the temperature of a coke oven carbonization chamber is improved, conditions are created for stable and high yield of coke oven coking, and the method is suitable for industrial production. And the purposes of quality improvement, cost reduction, efficiency improvement and greenization are achieved. A process route combining waste gas circulation and VOCs in-furnace combustion is adopted, and a waste gas circulation technology and a VO