Coal compaction apparatus and compaction method for top-charging coke oven

Abstract

The invention discloses a coal compaction apparatus and a coal compaction method for a top-charging coke oven. The apparatus comprises a compaction rod and a coal charging and conveying apparatus arranged on a coal charging car, wherein the compaction rod comprises a fixed frame and a support plate; a pair of gears is mounted on the fixed frame; two rows of convex teeth arranged at equal intervals vertically are arranged on the support plate; a pair of compaction plates connected through a rotary shaft is arranged at the lower end of the support plate; the edges of the upper ends of the two compaction plates are in bulge and recess shapes matched with each other; compaction roller wheels are mounted at the lower bottom ends of the compaction plates; limiting blocks are mounted on two sides of the lower end of the support plate; the coal charging and conveying apparatus comprises a coal hopper, a spiral conveying apparatus and a conical receiving apparatus; a discharging gate plate is additionally arranged at the bottom of the coal hopper; a fixed connection plate is arranged at the bottom of the spiral conveying apparatus; track wheels are mounted under the connection plate; a track plane on which the track wheels roll is provided; and a hydraulic shaft is mounted at one end of the connection plate. The coal charging and compaction continuous operations are carried out through a mechanical apparatus, so that the stack density of coal-as-fired of a single carbonization chamber is increased, the coke quality is improved, and the coke yield of a unit process is increased.

Description

Technical field [0001] The invention belongs to the technical field of metallurgical coking, and particularly relates to a top-loading coke oven coal compaction device and compaction method. Background technique [0002] With the continuous development and improvement of blast furnace smelting technology and equipment, the requirements for blast furnace coke quality have become more and more stringent. Despite the development of new technologies for blast furnace oxygen-enriched coal injection, coke is used as a heating agent, carbon supply agent and reducing agent for blast furnaces. The role of coke has been reduced, but the role of coke as a framework to protect the air permeability and liquid permeability of the blast furnace has been strengthened. It is an irreplaceable raw material in the current blast furnace ironmaking process. [0003] The metallurgical coke used in blast furnaces in my country uses a chamber coking process. The current coking technologies all start from ...

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Problems solved by technology

[0005] In the actual coking production process, the top-charging coke oven has the following problems due to its own furnace structure characteristics: 1. Due to the large difference in bulk density between the upper and lower parts of the coal that enters the furnace, there is a large difference in the coke quality between the upper and lower parts of the carbonization chamber and the upper part of the metallurgical coke. 2. With the increase of furnace age, it is more difficult to increase coke production under the condition of full production; 3. With the development of blast furnaces in the direction of large-scale, the quality of coke has put forward higher requirements Requirements, when the coal blending structure does not change, it is more difficult to improve the quality of coke

However, the flat coal rod with vibration compaction function used in this technology is affected by the four-link mechanism connected by the flat coal rod, and a large part of the force in the vertical direction acts on the connection between the flat coal rod and the four-link rod; Unusually, simple vibration and slapping cannot achieve effective compaction of coal in the coke oven, and the four-bar linkage vibrator connected to the flat coal pole affects the normal walking of the flat coal pole to a certain extent; in addition, the vibration effect may It will damage the brick furnace wall structure, reduce the service life of the coke oven, and easily cause the raw gas in the carbonization chamber to leak into the combustion chamber. If the raw gas in the carbonization chamber is not treated, it will eventually be discharged through the chimney through the combustion chamber and fail to meet the standard, resulting in Environmental pollution, if the vibration compaction effect is weakened, it will not be able to increase the coal loading and coke output of the single-hole coke oven, and improve the coke quality

[0013] Therefore, it is necessary to develop a simple, efficient and practical coal compaction device in view of the uneven coal density of the existing top-loading coke oven flat coal rod device and the actual production demand for increasing the coke output of the top-loading coke oven. And the operation method of increasing the coal loading per unit coke oven through the coal charging compaction device, thereby improving the coal charging bulk density and coke quality of the coke oven

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