External Gas Heating Device of Coal Pyrolyzing Furnace

摘要

An external gas heating device of a coal pyrolyzing furnace is positioned on the middle part of a furnace body and around the outer wall of a carbonizing chamber and comprises more than one group of first gas heater and second gas heater that have the same structure and a gas reversing device. The gas reversing device supplies air and purified gas into a combustion chamber of the first gas heater to be combusted and meanwhile sucks hot waste gas from a combustion chamber of the second gas heater. In the same way, the gas reversing device supplies air and purified gas into the combustion chamber of the second gas heater to be combusted and meanwhile sucks hot waste gas from the combustion chamber of the first gas heater. In the present invention, the aims of energy conservation and consumption reduction are fulfilled, and the coking cost is saved.

主权项

1. An external gas heating device of a coal pyrolyzing furnace, which is located around an external wall of a carbonizing room in a middle of a coal pyrolyzing furnace body, comprising at least one group of a first gas heater, a second gas heater having a same structure with the first gas heater, and a gas reversing device; wherein the first gas heater comprises a first combustor, a first coal gas inputting sub-tube and a first storing heat exchanger, the first combustor forms a relatively closed coal gas combustion flame path, the first coal gas inputting sub-tube is communicated with a bottom of the first combustor, the first storing heat exchanger comprises a first heat storing chamber, a first heat storing body, a first air inputting sub-tube and a first exhaust outputting sub-tube, the first heat storing chamber is provided within an external wall of the furnace body, the first heat storing body is located within the first heat storing chamber, one end of the first heat storing chamber is communicated with the bottom of the first combustor, the other end of the first heat storing chamber is connected with the first air inputting sub-tube and the first exhaust outputting sub-tube; wherein the second gas heater comprises a second combustor, a second coal gas inputting sub-tube and a second storing heat exchanger, the second coal gas inputting sub-tube is communicated with a bottom of the second combustor, the second storing heat exchanger comprises a second heat storing chamber, a second heat storing body, a second air inputting sub-tube and a second exhaust outputting sub-tube, the second heat storing chamber is also provided within the external wall of the furnace body, the second heat storing body is located within the second heat storing chamber, one end of the second heat storing chamber is communicated with the bottom of the second combustor, the other end of the second heat storing chamber is connected with the second air inputting sub-tube and the second exhaust outputting sub-tube; wherein a combustor through-hole is provided between the first combustor and the second combustor; wherein the gas reversing device comprises an upper disk, a lower disk, a rotation reversing motor, an air blower, a coal gas blower and an exhaust blower, the lower disk is connected with an air main tube and a first air sub-tube, a second air sub-tube, a coal gas main tube and a first coal gas sub-tube, a second coal gas sub-tube, an exhaust main tube and a second exhaust sub-tube, and a first exhaust sub-tube, wherein the second exhaust sub-tube is exchanged with the first exhaust sub-tube, the first air sub-tube is exchanged with the second air sub-tube, and the first coal gas sub-tube is exchanged with the second coal gas sub-tube; wherein the upper disk is rotatably attached on the lower disk, an air communicating tube, a coal gas communicating tube and an exhaust communicating tube are located on the upper disk, the rotation reversing motor is driving-connected with the upper disk for driving the upper disk to reciprocately rotate on the lower disk; wherein, the first air sub-tube is connected with the first air inputting sub-tube, simultaneously, the first coal gas sub-tube is connected with the first coal gas inputting sub-tube, simultaneously, the first exhaust sub-tube is connected with the first exhaust outputting sub-tube; similarly, the second air sub-tube is connected with the second air inputting sub-tube, simultaneously, the second coal gas sub-tube is connected with the second coal gas inputting sub-tube via a second coal gas wrap-tube, simultaneously, the second exhaust sub-tube is connected with the second exhaust outputting sub-tube.