Coke oven top layer blowby pneumatic spray repair device and pneumatic spray repair method

Abstract

The invention discloses a coke oven top layer blowby pneumatic spray repair device and pneumatic spray repair method. A slurry spray pipe passes through a casing pipe, the lower end of the slurry spray pipe is provided with a concave notch and is vertically connected with the center of a slurry support disk, and the upper end of the slurry spray pipe is connected with a flexible pipe and is connected with a compressed air pipeline through a slurry spray machine; the lower end of the casing pipe is vertically connected with a center hole of a support cover, and the upper end of the casing pipeis provided with a nut cap cover; a pipe body is provided with a branched pipe and a positioning screw hole; the branched pipe is provided with a valve and is connected with the compressed air pipeline through a flexible pipe. The slurry support disk goes deep into a kiln eye, the kiln eye is covered by the support cover, the slurry spray pipe is fixed by a bolt, the nut cap cover at the upper endof the casing pipe is screwed up tightly, the valves on the slurry spray machine and the branched pipe are opened at the same time, a slurry in the slurry spray machine is deposited on the slurry support disk and is used for spray repair while being deposited, the spray repair is carried out from bottom to top in order until all blowby parts are spray-repaired completely, and the valves are closed. The device and the method can be used for high-quality repair of coke oven top layer blowby parts, and the repair effect is good.

Description

technical field [0001] The invention relates to the technical field of furnace and kiln repairing, in particular to a coke oven roof blowby pneumatic gunning device and a pneumatic gunning method thereof. Background technique [0002] The coke oven is composed of a carbonization chamber, a combustion chamber, a regenerator, a chute area, a roof, a foundation, and a flue. The coal material in the carbonization chamber is heated to about 1000°C (high-temperature carbonization) under the condition of isolation of air, and coke, coke oven gas and coking chemical products are produced through thermal decomposition and coking. A coke oven has dozens of carbonization chambers and combustion chambers arranged alternately, separated by refractory materials (silica bricks). Each combustion chamber has 12 to 32 standing fire channels. The preheated gas from the regenerator (gas with high calorific value is not preheated) and air meet and burn at the bottom of the flue, and provide he...

AI Technical Summary

Problems solved by technology

When the amount of leakage is small, the excessive heat release caused by combustion will form a local high temperature, which will burn out the refractory bricks used to build the coke oven and affect the life of the furnace body; If the amount of gas remains unchanged, the increase of the amount of gas will lead to incomplete combustion of the gas, and there will be black smoke from the chimney, which will seriously pollute the environment

[0003] In the daily repair process, due to factors such as high furnace temperature and small diameter of the fire hole, the operator cannot repair the leaking part at close range. They can only use the tray to insert the fire hole for grouting operation, and squeeze the grout manually. Although this method is simple to operate, the strength of manual tamping is limited after all, the slurry cannot be squeezed into the deep gap, the repair effect is not good, the service life is short, and sometimes the slurry will overflow from the fire viewing hole if it is not properly operated, and it will block the standing fire after drying. Road, the effect of heating

Another advanced method is to use ceramic welding repair. This method requires professionals to use professional materials and equipment. It is suitable for large-area damage, and the construction cost is high and the process is complicated.

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