Thermal cycle continuous automated coal pyrolyzing furnace

摘要

A thermal cycle continuous automated coal pyrolyzing furnace, includes a furnace body, a coal feeding device, a preheating device, an inputting coal regulating bunker, an inputting coal cooling device, a coal pyrolyzation coking device, a coke modification device, a dry quenching device and a raw gas exporting device; wherein the coal feeding device, the pre-heating device, the inputting coal regulating bunker, the inputting coal cooling device, the coal pyrolyzation coking device, the coke modification device, the dry quenching device and the raw gas exporting device are all integrated on the furnace body; the coal pyrolyzation coking device includes a coking chamber, an external combustion gas heating device, an internal combustion gas heating device and a flame path bow. Utilizing the coal pyrolyzing furnace is capable of achieving continuously quenching, so as to improve quenching efficiency and decrease quenching cost.

主权项

1. A thermal cycle continuous automated coal pyrolyzing furnace, comprising: a furnace body, a coal feeding device, a plurality of preheating devices, an inputting coal regulating bunker, an inputting coal cooling device, a coal pyrolyzation coking device, a coke modification device, a dry quenching device and a raw gas exporting device;
wherein the coal feeding device, the preheating devices, the inputting coal regulating bunker, the inputting coal cooling device, the coal pyrolyzation coking device, the coke modification device, the dry quenching device and the raw gas exporting device are all integrated on the furnace body; the coal pyrolyzation coking device comprises a coking chamber, an external combustion gas heating device, an internal combustion gas heating device and a flame path bow; the coal feeding device comprises: an inputting coal dust conveyor, an inputting bunker, a coal dust direction divider, a coal dust distribution chamber, an inputting bunker discharge duct and a coal dust filter; the coal dust filter is located above the inputting coal dust conveyor, the inputting coal dust conveyor adopts a screw conveying structure and is provided on a top of the inputting bunker, the convex coal dust direction divider is provided on a middle of a bottom of the inputting coal bunker and divides the bottom of the inputting bunker into a plurality of coal dust distribution chambers; the inputting bunker discharge duct is provided on the coal dust distribution chambers, and a discharge control valve is provided on the inputting bunker discharge duct; the preheating devices are provided below the coal feeding device and on a top of the coal pyrolyzing furnace; each preheating device comprises a furnace body, an exhaust gas chamber, at least one exhaust gas preheating pipe and a preheater; wherein the furnace body comprises an internal layer wall, a middle layer wall and an external layer wall; the internal layer wall forms the exhaust gas chamber, and an exhaust gas gathering loop channel is formed between the middle layer wall and the external layer wall; the exhaust gas gathering loop channel has an exhaust gas main outlet, the exhaust gas preheating pipe passes through the internal layer wall and the middle layer wall for communicating the exhaust gas chamber with the exhaust gas gathering loop channel, and divides a position between the internal layer wall and the middle layer wall into a plurality of preheating chambers, the preheaters are respectively provided in each of the preheating chambers; a hot exhaust gas inputting pipe is provided on a bottom of the exhaust gas chamber, hot exhaust gas after burning enters the hot exhaust gas inputting pipe, accesses the exhaust gas gathering loop channel via the exhaust gas preheating pipe, and finally is discharged via the exhaust gas main outlet of the exhaust gas gathering loop channel, hot exhaust gas after burning performs heat conduction on the exhaust gas preheating pipe, the internal layer wall and the middle layer wall during the process of discharging; the inputting coal regulating bunker is provided on the coking chamber below the preheating devices of the coal pyrolyzing furnace, the inputting coal regulating bunker comprises: a small bunker, a bunker feeding level indicator, a bunker discharging level indicator, a small bunker discharging pipe and a small bunker discharging valve; a top portion of the small bunker is connected with a bottom portion of the preheating device, the bunker feeding level indicator and the bunker discharging level indicator are respectively provided on a top and a bottom of the small bunker, the small bunker discharging pipe is connected on a bottom of the small bunker via the small bunker discharging valve and extends to the coking chamber of the coal pyrolyzing furnace; wherein the inputting coal cooling device comprises: an air inlet pipe, an air outlet pipe, an air inlet loop pipe, an air outlet loop pipe, an air inlet branch pipe, an air outlet branch pipe and a cooling air duct; wherein the air inlet pipe is communicated with the air inlet loop pipe and the air outlet pipe is communicated with the air outlet loop pipe; the air inlet loop pipe and the air outlet loop pipe are respectively provided on a periphery of the furnace body of the coal pyrolyzing furnace; the air inlet branch pipe and the air outlet branch pipe are respectively provided on the air inlet loop pipe and the air outlet loop pipe; wherein the air inlet branch pipe is provided on a lower portion of the cooling air duct, and the air outlet branch pipe is provided on an upper portion of the cooling air duct; the small bunker discharging pipe passes through the cooling air duct and extends to the coking chamber; the coal pyrolyzing coking device, the coke modification device and the dry quenching device are formed integrally from top to down on the furnace body, and the coal pyrolyzing coking device is arranged in a center of the furnace body, which comprises: the coking chamber, the external gas heating device, the internal burning heating device and the flame path bow; the coking chamber is in a loop chamber above the flame path bow, the loop chamber is formed by an internal loop wall and an external loop wall made of fire-resistant and heat-conductive materials; the external gas heating device is around an external circle of the external loop wall of the coking chamber, wherein the external gas heating device comprises at least one equal set of a first gas heater, a second gas heater and a gas reversing device; the internal burning heating device is provided inside the internal loop wall of the coking chamber, the internal burning heating device comprises at least one set of third gas heaters and fourth gas heaters which have same structures and coke quenching exhaust heaters; wherein the coke modification device is located on the flame path bow within the furnace body, and comprises a coke modification room formed by the lower portion of the coking chamber, a lower portion of an internal main flame path and a lower internal sub flame path section of the internal burning heating device, a lower portion of a high temperature combustible waste gas inputting path of a central path encircled by a central annular wall of the internal burning heating device, wherein a combustible exhaust inputting hole is provided on a lower portion of the central annular wall for communicating the high temperature combustible waste gas inputting path with the internal main flame path and the lower internal sub flame path section; the dry quenching device is located below the coking chamber, the coke modification device, the internal burning heating device and the flame path bow in the coal pyrolyzing furnace and comprises a high temperature coke quenching room, a low temperature coke quenching room, a coke quenching bridge bow and a coke quenching exhaust blower; the high temperature coke quenching room is provided below the flame path bow, a top portion of the high temperature coke quenching room is communicated with the high temperature combustible waste gas path; the coke quenching bridge bow is located between the high temperature coke quenching room and the low temperature coke quenching room and comprises a bridge bow, a wind collecting room, a dry quenching wind annular path and a dry quenching wind tube; at least one bridge bow is spacedly radially arranged within the quenching wind annular path at a certain degree from an axial center of the high temperature coke quenching room and the low temperature coke quenching room, a middle of the bridge bow forms the wind collecting room having an inversed conical shape with an upper large diameter and a lower small diameter, a semi-spherical air cap is located at a top of the wind collecting room, an opening at the lower portion of the wind collecting room faces to the low temperature coke quenching room; the dry quenching wind tube is located within the bridge bow, one end of the dry quenching wind tube leads to the wind collecting room, the other end of the dry quenching wind tube leads to the dry quenching wind annular path, the dry quenching wind annular path is connected with the coke quenching exhaust blower via a wind inputting tube; a coking valve is located at a bottom opening of the low temperature coke quenching room; wherein the raw gas exporting device comprises a raw gas collection chamber, an internal exporting pipe, an external exporting pipe, a main exporting pipe and a loop exporting pipe; wherein the raw gas collection chamber is provided on a top of the coking chamber and forms an integrated body with the coking chamber; the internal exporting pipe is located inside a flame path isolating wall; an internal exporting pipe inlet passes through the internal loop wall of the coking chamber and extends to the coking chamber; an internal exporting pipe outlet passes through the internal loop wall and extends to the raw gas collection chamber on a top of the coking chamber; the external exporting pipe is located in an external wall of the furnace body, and comprises a lower exporting pipe inlet and an upper exporting pipe inlet which pass through the external loop wall of the coking chamber and extend to the coking chamber; an external exporting pipe outlet passes through the external loop wall and extends to the raw gas collection chamber on the top of the coking chamber; the exporting main pipe is provided in the external wall of the furnace body of the coal pyrolyzing furnace, an exporting main pipe inlet is communicated with the raw gas collection chamber and extends upwardly to an exporting loop pipe on an upper portion of the external wall of the furnace body, and a raw gas exporting outlet is provided in the exporting loop pipe.