Control apparatus for single gas collecting pipe of coke oven

Abstract

The invention discloses a control apparatus for a single gas collecting pipe of a coke oven. The control apparatus comprises a riser, wherein the side wall of the riser is provided with a main pipe communicating with the riser; the orifice of the main pipe is connected with a single gas collecting pipe; the bending part of the main pipe is connected with an ammonia spraying pipe; the orifice, connected with the single gas collecting pipe, of the main pipe is internally provided with a control mechanism; the orifice, located in the main pipe, of the ammonia spraying pipe is fixedly provided with an ammonia spraying device; and the orifice, located out of the main pipe, of the ammonia spraying pipe is connected with a low-ammonia pipe and a high-ammonia pipe through a T-branch pipe. According to the control apparatus for the single gas collecting pipe of the coke oven, inflation of a baffle hole and a filtering hole increases the pressures thereof, so a baffle rod and the filtering rod move outward, and after the completion of outward movement of baffle plates, and the baffle plates just contact with the inner wall of the single gas collecting pipe; so the single gas collecting pipeis blocked, and smoke from burning coal cannot move. A filter net is continuously shaken so as to shake off coal ash adsorbed on the filter net into the filtering hole, and then the coal ash is discharged by a coal ash discharging pipe, so the coal ash is prevented from accumulating in a pipeline, thereby avoiding blockage caused by the accumulation of the coal ash.

Description

technical field [0001] The invention relates to the technical field of coke ovens, in particular to a coke oven single gas collecting pipe control device. Background technique [0002] During the coking process of the coke oven, the pressure of the coke oven coking chamber and gas collecting pipe fluctuates frequently, especially during the coke pushing and coal charging process, the pressure fluctuation has the following disadvantages: When the operation of the furnace body forms a negative pressure, the air will flow from the furnace door, The furnace cover and other places enter the furnace body, resulting in coke burning, ash content increase, and coke quality degradation; the air entering the furnace body will also chemically react with the furnace body building materials, resulting in furnace body erosion and shortening the service life of the furnace body. The air will also promote the burning of raw gas, which will increase the temperature of the gas system, which wi...

AI Technical Summary

Problems solved by technology

[0002] During the coking process of the coke oven, the pressure of the coke oven coking chamber and gas collecting pipe fluctuates frequently, especially during the coke pushing and coal charging process, the pressure fluctuation has the following disadvantages: The furnace cover and other places enter the furnace body, resulting in coke burning, ash content increase, and coke quality decline; the air entering the furnace will also chemically react with the building materials of the furnace body, resulting in denudation of the furnace body and shortening the service life of the furnace body

The air will also promote the burning of raw gas, which will increase the temperature of the gas system, which will increase the burden on the cooling system and cause unnecessary energy consumption; when the pressure in the furnace body is too high, the raw gas will flow from the furnace door, furnace cover, etc. On the one hand, it causes smoke and fire, which pollutes the environment; the recovery rate of raw gas is lowered, resulting in waste of energy; the pressure of the carbonization chamber is too high, which also causes a large amount of crude gas to leak into the combustion chamber, and a large amount of sulfur and nitrogen Components enter the combustion chamber and eventually form NOx and SO 2 , leading to NOx and SO in coke oven flue gas 2 exceed the standard

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