Crude gas oxygen content control system of internal heated vertical carbonization furnace

A crude gas oxygen content control system of an internal heated vertical carbonization furnace is provided with a serially-connected feed device with a transitional storage hopper, and an automatic manifold pressure regulating device. The device comprises an upper storage hopper, the transitional storage hopper and a lower storage hopper, wherein two automatic emptying devices are respectively arranged between the upper storage hopper and the transitional storage hopper as well as between the storage hopper and the lower storage hopper; the pressure taking point of the automatic manifold pressure regulating device is set in front of sprayed ammonia water, and is provided with a set of crude gas sampling devices and a signal damper; a great backflow pressure taking point of a coal gas blower is arranged in front of a primary cooling tower; a re-burnt carbocoal coal gas and air mixing and burning device is arranged in the carbonization furnace; and a regulating valve is arranged on a re-burnt carbocoal coal gas