Method for short-time on-line replacement of coke dry quenching furnace water sealed tank

Abstract

The invention discloses a method for short-time on-line replacement of a coke dry quenching furnace water sealed tank. Through material level lowering, circulating fan ceaselessness, circulating air volume reduction, and heat preservation, the method can finish replacing a water sealed tank in a short time. And the method comprises: before replacing, lowering a material level, keeping a circulating fan operating, reducing a circulating air volume, and discharging coke in a small amount for heat preservation and pressure maintaining; welding lifting lugs on the peripheries of the water sealed tank, passing a wire rope through the lifting lugs, and transversely shifting a coke pot cover to a position over the water sealed tank with a hoisting device; letting an operator hoist the water sealed tank to a position higher than a loading device with a hand-chain hoist, then utilizing the hoisting device to shift a coke pot and the water sealed tank transversely to a hoisting headframe, and placing them on a beforehand made trolley under the headframe; and installing a new water sealed tank, and placing it into place accurately, thus finishing replacing the water sealed tank. The method of the invention realizes replacement of a water sealed tank in a shortest time without stopping the furnace, thus guaranteeing the relative enhancement of dry quenching rate, steam quantity and power generation.

Description

Technical field [0001] The invention belongs to the field of metallurgy, and relates to a dry quenching furnace top water sealing tank, in particular to a method for replacing the dry quenching furnace water sealing tank online in a short time. Background technique [0002] The top water seal tank of the dry quenching furnace is a device that seals the furnace cover. Because this part is baked at high temperature for a long time, it causes serious water leakage and affects the operation of the system. Therefore, the water seal tank needs to be replaced in time. The traditional replacement method requires the furnace to be shut down. The annual maintenance and shutdown method is to cool the entire system. When the temperature of the dry quenching furnace mouth drops to normal temperature, it can be replaced. At the same time, the replacement of the water seal tank requires the cooperation of a large crane. The disadvantages of this method are: the replacement time is long, the...

AI Technical Summary

Problems solved by technology

[0002] The water seal tank on the top of the CDQ furnace is a device for sealing the furnace cover. Since this part is baked at high temperature for a long time, it will cause serious water leakage and affect the system operation. Therefore, the water seal tank needs to be replaced in time.

The traditional replacement method needs to shut down the furnace. The whole system is cooled down according to the operation method of shutting down the furnace for annual maintenance. When the temperature of the CDQ furnace mouth drops to normal temperature, the replacement can be carried out. At the same time, the replacement of the water seal tank requires the cooperation of a large crane. The disadvantages of this method are: the replacement time is long, the whole system is in a shutdown state, and production cannot be performed during this period, red coke can only be extinguished by water, the quality of coke is greatly reduced, and energy is wasted