The invention discloses a control method and
system for a
coke oven riser
pipe. The
system comprises the riser
pipe, a bridge
pipe, a low pressure
ammonia water spray nozzle, a
high pressure ammonia water spray nozzle, a corresponding low pressure
ammonia water pipeline, a corresponding
high pressure ammonia water pipeline and a programmable controller, wherein a pipe cover capable of being opened and closed and a pipe cover driving cylinder are arranged on the riser pipe; the bridge pipe is connected to an end opening in one side of the riser pipe; a water seal valve and a water seal valve driving cylinder are arranged at the lower end of the bridge pipe; the low pressure ammonia
water spray nozzle is arranged at a position, which is close to a riser pipe joint, in the bridge pipe; the
high pressure ammonia water
spray nozzle is arranged at a position, which is located below the low pressure ammonia water
spray nozzle, in the bridge pipe; the low pressure ammonia water pipeline and the high pressure ammonia water pipeline are respectively connected to two end openings of a three-way
ball valve; the three-way
ball valve is connected with a three-way
ball valve driving cylinder or an electromagnetic driving valve; an electromagnetic switching valve or / and the electromagnetic driving valve is / are electrically connected with the controller, and is / are electrically connected with a
coke oven
control system. According to the
control system disclosed by the invention, safe
interlocking between all facilities of the riser pipe and work of a
coal charging car of the
coke oven and a coke pusher is realized; by
automatic control and replacement of unmanned work for manual work, the cooperation order of workers and the
time deviation of the manual work are eliminated, and the safety and
environmental protection risk during work of the
coke oven riser pipe is reduced.