The invention discloses a composite pulverized
coal destructive distillation device and method and relates to a pulverized
coal destructive distillation device and method so as to solve the problem that a hot carrier and pulverized
coal are not ideally mixed in a mixer in the conventional coal
fluidization destructive distillation technology. According to the device, one end of a hot carrier vertical
pipe is connected with a raising
pipe reactor, and the other end of the hot carrier vertical
pipe is connected with a
charring device; and one end of the raising pipe reactor is introduced with
dry gas, and the other end of the raising pipe reactor is communicated with a destructive
distillation reactor. The method comprises the following steps: 1, mixing high-temperature semicoke and pulverized coal in the raising pipe reactor, and carrying out a destructive
distillation reaction; 2, inputting one part of high-temperature semicoke in the
charring device into the raising pipe reactor through the hot carrier vertical pipe, and allowing the other part of high-temperature semicoke to enter a semicoke cooler through a discharging vertical pipe so as to be discharged into a semicoke
storage tank after cooling; 3, reacting oil gas and semicoke
coke in the destructive
distillation reactor; and 4, returning the semicoke
fine powder back to the destructive distillation reactor, allowing the semicoke
fine powder to enter the
charring device to serve as partially combusted semicoke through a semicoke conveying pipe, and raising the temperature to become a hot carrier after
combustion. The device and the method are used for destructive distillation of pulverized coalwith the particle size of less than or equal to 5mm.