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Coke oven in steel plant equipment

Coke ovens equipment The exterior of the coke oven masonry should be equipped with furnace protection equipment. These furnace protection equipment include: furnace door frame and protective plate, furnace protection column, vertical and horizontal braces, springs and furnace door, etc.

Coke door frame

The role of Coke oven protection equipment:

The potential energy of the adjustable spring is used to continuously apply sufficient, uniformly and reasonably distributed protective pressure to the masonry, so that the masonry can still remain intact and tight under its own expansion and external force, thus ensuring the normal production of the coke oven.

Coke oven protection iron parts

The exterior of the coke oven masonry should be equipped with furnace protection equipment. These furnace protection equipment include: furnace door frame and protective plate, furnace protection column, vertical and horizontal braces, springs and coke oven door, etc.

The furnace door adopts a spring blade edge, a spring door bolt, and a hanging air-cooled coke oven door. The position of the furnace door has good repeatability during alignment. The elastic blade edge can always maintain a certain pressure on the furnace door frame to prevent the coke oven door from smoking and fire.

The protective plate is a large I-shaped protective plate, which effectively protects the burner head from damage.

The coke oven column is made of single H-shaped steel, and seven-wire small springs are set along the height of the coke oven. There are spring groups at the ends of the vertical and horizontal braces, which can evenly exert a certain pressure on the furnace body, ensuring the integrity and tightness of the overall structure of the coke oven.

Protect Pennel and coke oven door frames:

The main coke oven of the protective plate and furnace door frame is to distribute the protective pressure evenly and reasonably on the masonry, while ensuring the sealing between the furnace head masonry, protective plate, furnace door frame and furnace door knife edge.

coke oven plant

Stove column:

The furnace column is welded with I-beam (or channel steel). It can also be made of special square hollow steel. It is installed on the outside of the furnace head protection plate on the machine and coke sides. The machine and coke are connected by upper and lower horizontal braces. The stove columns on both sides are tightened. Large springs are installed on both sides of the machine side of the upper horizontal brace and the machine focus of the lower horizontal brace. The upper horizontal brace on the burnt side is grilled when it is burnt and pushed out, so there is no spring. A number of small springs are installed in the furnace column along the height direction. The furnace column bears the expansion pressure of the furnace body through the protective plate and furnace door frame. That is, the iron parts protecting the furnace mainly rely on the stress of the furnace column itself and the external force of the spring to give protective pressure to the furnace body. The furnace column also plays the role of erection machine, coke side operating platform, and supporting gas collecting pipe. The single wall of the regenerator of a large coke oven is also equipped with a small furnace column. The small furnace column is connected to the furnace column through a cross beam to compress the single wall for protection.

Zipper:

The braces used in coke ovens are divided into two types: horizontal braces and longitudinal braces. The horizontal pulls are made of 50mm low carbon steel round bars and are installed on the top and bottom of the furnace along the length of the combustion chamber. The upper braces are placed in the brick grooves on the top of the furnace, and the lower braces are buried in the furnace base platform on the machine and coke sides. Judging from the damage to the horizontal braces on some coke ovens, the temperature of the riser tube holes, coal loading holes, etc. Higher up, it’s the most serious. The diameter of the tie bars in these parts tends to become thinner. In addition to the higher temperature near the riser tube, there is also corrosion from ammonia, so the tie bars become thinner faster. The thinning of the tie rod can be detected by the load of the large spring often becoming smaller. In order to extend the service life of the tie bars, casings can be added to the above-mentioned vulnerable parts, and the coal loading holes, the roots of the riser pipes, etc. should be regularly repaired and grouted to prevent cross-leakage and fire damage to the tie bars. In addition, during the furnace discharge operation, it is necessary to prevent the accumulation of residual coal in the coal loading hole and the furnace top surface. The combustion of these coal deposits will increase the temperature of the tie rod. When burning the graphite on the wall of the carbonization chamber, if the furnace door is not tight or the coal loading port leaks, the heat generated by the combustion of the graphite will also cause the temperature of the tie rod near the coal loading hole to increase sharply. If the carbonization chamber is not fully loaded with coal, negative pressure operation will cause graphite in the rising tube to block the outlet of the raw gas, and will also cause smoke and fire at the coal loading hole to burn out the tie rods.

Coke door and Coke oven door frame:

Generally, the furnace door is held tight by horizontal iron bolts. When removing and hanging the furnace door, the bolt-twisting mechanism on the coke pushing car and the coke blocking car is used to loosen and tighten the horizontal iron bolts. The operation takes a long time and the force is difficult to control. The spring door latch uses the pressure of the spring to hold the furnace door tightly. The operation time is short, the force on the furnace door is stable, and the mechanism of lifting and hanging the furnace door can be simplified. Since the spring door bolt cannot change the pressure of the knife edge on the furnace door frame, it is often combined with tapping the knife edge to adapt to the slight deformation of the furnace door frame or the local accumulation of oil residue.

The furnace door frame is used to fix the furnace door. To this end, the furnace door frame is required to have a certain strength and rigidity. The machined surface should be smooth and straight so as to be in close contact with the knife edge of the furnace door and seal the furnace door. When installing the furnace door frame, it should be aligned vertically so that the fire directly contacts the furnace column and plays a role in protecting the furnace column, so it cannot be too short. During production, the knife cover of the furnace door frame should be kept clean so that the knife edge of the furnace door can be in close contact with it to avoid smoke and fire. Fill the sealing material evenly around it and press it tightly. The ribs around the furnace door frame can reduce the smoke coming out of the furnace door.

 

coke ovens equipment: Coke ovens door

coke ovens equipment: Coke ovens door frame

coke ovens equipment: Protect Pennel

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coke oven door

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