RU2234525C2 - Coke furnace masonry - Google Patents

Abstract

FIELD: coke production.

SUBSTANCE: masonry is designed for coke furnace having coke chamber, heating partitions divided into vertical heating channels and made from refractory parts. Surface of parts facing inside furnace is provided with slots. Heating partitions of refractory parts have head portions provided at their both sides with 2-3 vertical slots. Slot depth and width ratio is 1:(2-2.3).

EFFECT: reduced coke loss during discharge thereof from furnace owing to enhanced integrity of face part of coke cake.

2 dwg

Description

The invention relates to the laying of a coke oven and may find application in the production of coke.

A known construction of a coke oven masonry, consisting of a coking chamber, heating walls, divided into vertical heating channels, made of refractory products, on the surface of which, facing the chamber, there are vertical and inclined grooves (see, for example, AS USSR No. 760702, IPC: C 10 V 29/02, n.p.).

Also known is the construction of coke oven masonry, consisting of a coking chamber, heating walls, divided into vertical heating channels made of refractory products, on the surface of which, facing the chamber, there are grooves that have an inclination in the direction opposite to the oven doors (see, for example, Russian Patent No. 2167905, IPC: C 10 V 29/02; publ. 05.27.01. BI No. 15).

According to the technical nature and the achieved result, the known device is the closest to the claimed one and is selected as a prototype.

A disadvantage of the known designs is the irretrievable loss of metallurgical coke that occurs when the coking chamber doors are removed before the finished coke is dispensed due to the partial collapse of the front parts of the coke cake, and on average 5-7 tons of coke per day on a single battery.

The basis of the invention is the task of developing the design of the coke oven masonry, which due to the increase in the monolithicity of the front part of the coke cake provides a reduction in coke losses during its delivery from the furnace.

The problem is solved in the coke oven masonry, consisting of a coking chamber, heating walls divided into vertical heating channels, made of refractory products, which have grooves on the surface facing the furnace; according to the invention, on the refractory products on both sides of the head part of the heating wall, 2-3 vertical grooves are made, and the ratio of the groove depth to its width is 1: (2-2.3).

Distinctive features of the claimed device are:

- on refractory products on both sides of the head part of the heating wall, 2-3 vertical grooves are made;

- the ratio of the depth of the groove to its width is 1: (2-2.3).

From the prior art it follows that these differences of the claimed device are new.

As the studies showed, the presence of 2-3 vertical grooves, in which the ratio of depth to width is 1: (2-2.3), on refractory products on both sides of the head of the heating wall allows you to increase the solidity of the front of the coke cake and reduce by 90 -95% the number of coke spills formed when removing the doors of the coke oven.

It was found that if the number of vertical grooves is less than 2, the number of spills does not decrease.

If the number of grooves is more than 3, then the resistance to the cake’s movement when it is dispensed will increase and, as a result, the pressure of the coke ejector press through the cake to the chamber walls will increase. In this case, when the coke cake is pushed out, friction will occur not only under the chamber, but also on the wall, which can cause deformation and malfunction of the chamber.

If the ratio of the depth of the groove to its width is 1: <2, then the filling of the groove with the coal charge decreases, and a gap forms between the finished cake and the chamber wall, i.e. during coking, the edge of the coke cake will not be held by the groove.

If the ratio of the depth of the groove to its width is 1:> 2.3, then there will be an increase in force when issuing coke.

Figure 1 presents a diagram of the inventive device, and figure 2 is a detail of the groove.

A coke oven contains a coking chamber 1, heating walls 2, vertical heating channels 3 made of refractory products, on the surface of which on both sides of the head of the heating wall 2 there are 2-3 vertical grooves 4 having a depth “a” and a width “in "

The ratio of the depth “a” of the groove “a” to its width “b” is 1: (2-2.3).

The device operates as follows.

In the process of loading the coal charge fills the coking chamber 1 and the grooves 4 on both sides of the head part of the heating walls 3. Subsequently, under the influence of temperature, the initial charge turns into coke.

At the end of coking between the coking mass and the walls of the chamber, due to the shrinkage of the coke cake, a certain gap is formed.

The dimensions of the grooves are selected so large that they increase the solidity of the coke cake and do not allow coke to fall from its front part.

In addition, the accepted dimensions and the number of grooves practically do not increase the force when issuing finished coke.

The technical and economic advantages of the claimed device compared to the prototype device are to reduce the number of coke spills formed when removing the doors of the coke oven by 90-95%.

Claims (1)

Masonry of a coke oven, consisting of a coking chamber, heating walls divided into vertical heating channels made of refractory products, on which there are grooves on the surface facing the furnace, characterized in that on the refractory products on both sides of the head part of the heating wall 2 ÷ 3 vertical grooves, while the ratio of the groove depth to its width is 1: (2 ÷ 2,3).

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