Method for overcoming leakage of dry quenching bypass flow middle plug

Abstract

The invention discloses a method for overcoming leakage of a dry quenching bypass flow middle plug. The method comprises the steps that a fence is arranged at the root leakage position of a bypass flow middle plug, the fence surrounds the middle plug and is provided with a protection ring higher than a middle plug flange cover, and then a castable poured between the protection ring and the fence till the castable is leveled with a top plate of a middle plug iron box at least, and after the castable is solidified, the castable is combined with the top plate of the middle bolt iron box, so that the leakage point is blocked by the castable. The invention aims to provide a method for overcoming leakage of the dry quenching bypass flow middle plug, aiming at the phenomena that the dry quenching bypass flow middle plug is not tight in sealing, burnt out, leaked and the like, a special method is adopted to repair a leakage point of the bypass flow middle bolt. and normal production of dry quenching is prevented from being affected due to the fact that the bypass flow middle plug leaks and needs to be replaced by production halt.

Description

technical field [0001] The invention relates to the field of coke CDQ in the coking industry, in particular to a method for repairing plug leakage in CDQ bypass flow. Background technique [0002] Coal Coke Chemical Branch of Baotou Steel Co., Ltd. currently has 5 sets of CDQ devices. There are 2 sets of CDQ devices in the new area, with a processing capacity of 200t / h; 3 sets of CDQ devices in the old area, with a processing capacity of 125t / h. , Each set of CDQ in the new area is equipped with a total of 16 bypass flow and air introduction middle plugs; each set of CDQ in the old area is equipped with a total of 24 bypass flow and air introduction. [0003] The bypass flow rate and air inlet pipe of the CDQ system are set at the annular flue of the CDQ tank. When the inlet valve is in the open state, the introduced air passes through the bypass flow rate and the air inlet middle plug from both sides of the annular flue. Enter the dry quenching tank and merge with the circ...

AI Technical Summary

Problems solved by technology

[0004] Due to the normal production of CDQ, in order to ensure that the circulating gas composition of the system is qualified, it is necessary to introduce air to adjust the gas composition in the circulating system. Phenomena such as poor sealing, burnout, and leakage generally occur at the root of the plug in the bypass flow, which affects the normal air introduction operation. Lack of sealing, burnout, and leakage will cause a large amount of coke powder and circulating gas to be ejected. It not only pollutes the surrounding environment, but also emits a large amount of circulating gas, which contains H 2 , CO and other toxic and harmful components, which cause pollution to the surrounding environment and pose a safety hazard, which poses a hazard to the operators and inspection personnel in the area

At the same time, the leakage of the middle plug will inhale a large amount of air, which increases the burning loss of CDQ coke

The CDQ in the new area of ​​our factory has repaired 8 bypass flow plugs on site according to this method, and the current use effect is very good