阅读说明：本技术 一种干熄焦炉十字风道更换方法 (Method for replacing cross air duct of coke dry quenching furnace ) 是由 王宏伟 李松 全加云 张真春 王跃峰 许伟 李玲 于 2021-08-26 设计创作，主要内容包括：本申请公开了一种干熄焦炉十字风道更换方法,包括在干熄焦炉内安装开设有吊装孔的砌砖吊盘；将所述砌砖吊盘提升至预设高度；依靠所述砌砖吊盘上面形成的平台对炉内砖进行拆除和砌筑的同时,在所述砌砖吊盘的下部更换十字风道；利用所述吊装孔更换直筒、下锥斗和上锥斗。利用上述干熄焦炉十字风道更换方法,能够在安全可靠的基础上,减少占用干熄焦检修网络主线的时间,缩短检修工期,提高焦炭质量,降低环保压力。(The application discloses a method for replacing a cross air duct of a coke dry quenching furnace, which comprises the steps of installing a bricklaying hanging scaffold provided with a hoisting hole in the coke dry quenching furnace; lifting the bricklaying hanging scaffold to a preset height; the cross air duct is replaced at the lower part of the bricklaying platform while bricks in the furnace are removed and built by a platform formed on the bricklaying platform; and replacing the straight cylinder, the lower cone hopper and the upper cone hopper by using the hoisting hole. By using the method for replacing the cross air duct of the coke dry quenching furnace, the time for occupying a main line of a coke dry quenching maintenance network can be reduced on the basis of safety and reliability, the maintenance construction period can be shortened, the coke quality can be improved, and the environmental protection pressure can be reduced.)

1. A method for replacing a cross air duct of a coke dry quenching furnace is characterized by comprising the following steps:

installing a bricklaying hanging scaffold provided with a hoisting hole in the coke dry quenching furnace;

lifting the bricklaying hanging scaffold to a preset height;

the cross air duct is replaced at the lower part of the bricklaying platform while bricks in the furnace are removed and built by a platform formed on the bricklaying platform;

and replacing the straight cylinder, the lower cone hopper and the upper cone hopper by using the hoisting hole.

2. The method for replacing the cross air duct of the coke dry quenching furnace according to claim 1, wherein the step of installing the bricklaying platform with the hoisting holes in the coke dry quenching furnace comprises the following steps:

the components of the bricklaying platform are placed into the furnace from the manhole door and assembled therein.

3. The dry quenching furnace cross air duct replacing method as claimed in claim 1, wherein the lifting the bricklaying platform to a preset height comprises:

and lifting the bricklaying hanging scaffold to a corbel brick replacing part by using a temporary support at the upper part of the lifting machine and a winch.

4. The method for replacing a cross air duct of a coke dry quenching furnace according to claim 1, wherein the removing and building of the bricks in the furnace by means of the platform formed on the brick laying platform comprises:

and dismantling and building the corbel bricks and the lining bricks by virtue of the platform formed on the brick laying hanging scaffold.

5. The dry quenching furnace cross air duct replacing method as claimed in claim 1, wherein the replacing of the cross air duct at the lower part of the bricklaying platform comprises:

the decomposed and removed cross air duct is transported out of the furnace through a manhole;

and 4 sections of new cross air ducts are transported into the furnace through the manhole for assembly.

6. The method for replacing the cross air duct of the coke dry quenching furnace as claimed in claim 1, wherein the replacing of the straight cylinder, the lower cone hopper and the upper cone hopper by the hoisting hole comprises:

and hoisting the new straight cylinder, the upper conical hopper and the lower conical hopper to the installation position in the furnace through the hoisting hole by using an electric hoist on the hoisting machine, and closing the hoisting hole.

Technical Field

The invention belongs to the technical field of equipment installation, and particularly relates to a method for replacing a cross air duct of a dry quenching furnace.

Background

In the field of dry quenching, the cross air duct of the dry quenching furnace is sometimes collapsed by high-heat coke carbon to generate hidden equipment troubles, which seriously affect the normal operation of the dry quenching equipment, and at the moment, the cross air duct needs to be integrally replaced. The cross air duct mainly comprises a straight cylinder, an upper cone hopper, a lower cone hopper, 4 sections of air ducts and 32 sections of wear-resistant plates, the old cross air duct is synchronously installed along with the furnace shell when the dry quenching furnace is newly built, in the prior method for replacing the cross air duct during the coke dry quenching maintenance, the volume of each part of the air duct is larger, therefore, coke oven holes at the top of the dry quenching furnace are used as channels for hoisting and transporting, so as to remove the old cross air duct and install a new cross air duct, because the process occupies the coke oven hole at the top, the cross air duct and the corbel bricks in the oven and other parts can not be overhauled simultaneously, which affects the overhauling of the corbel bricks in the oven, thereby occupying the time of the coke dry quenching maintenance network main line, prolonging the construction period of the whole coke dry quenching maintenance, and when dry quenching maintenance is carried out, water is needed for quenching coke, so that the coke quality is reduced, and the environment is not facilitated.

Disclosure of Invention

In order to solve the problems, the invention provides a method for replacing a cross air duct of a coke dry quenching furnace, which can reduce the time for occupying a main line of a coke dry quenching maintenance network, shorten the maintenance period, improve the coke quality and reduce the environmental protection pressure on the basis of safety and reliability.

The invention provides a method for replacing a cross air duct of a dry quenching furnace, which comprises the following steps:

installing a bricklaying hanging scaffold provided with a hoisting hole in the coke dry quenching furnace;

lifting the bricklaying hanging scaffold to a preset height;

the cross air duct is replaced at the lower part of the bricklaying platform while bricks in the furnace are removed and built by a platform formed on the bricklaying platform;

and replacing the straight cylinder, the lower cone hopper and the upper cone hopper by using the hoisting hole.

Preferably, in the method for replacing the cross air duct of the coke dry quenching furnace, the step of installing the bricklaying hanging scaffold provided with the hoisting hole in the coke dry quenching furnace comprises the following steps:

the components of the bricklaying platform are placed into the furnace from the manhole door and assembled therein.

Preferably, in the method for replacing the cross air duct of the dry quenching furnace, the lifting the bricklaying platform to a preset height includes:

and lifting the bricklaying hanging scaffold to a corbel brick replacing part by using a temporary support at the upper part of the lifting machine and a winch.

Preferably, in the method for replacing the cross air duct of the coke dry quenching furnace, the step of dismantling and building the bricks in the furnace by the platform formed on the brick laying hanging scaffold comprises the following steps:

and dismantling and building the corbel bricks and the lining bricks by virtue of the platform formed on the brick laying hanging scaffold.

Preferably, in the method for replacing the cross air duct of the dry quenching furnace, the replacing the cross air duct at the lower part of the bricklaying platform comprises:

the decomposed and removed cross air duct is transported out of the furnace through a manhole;

and 4 sections of new cross air ducts are transported into the furnace through the manhole for assembly.

Preferably, in the method for replacing the cross air duct of the coke dry quenching furnace, the replacement of the straight cylinder, the lower cone hopper and the upper cone hopper by using the hoisting hole comprises the following steps:

and hoisting the new straight cylinder, the upper conical hopper and the lower conical hopper to the installation position in the furnace through the hoisting hole by using an electric hoist on the hoisting machine, and closing the hoisting hole.

According to the description, in the method for replacing the cross air duct of the coke dry quenching furnace, the bricklaying hanging scaffold with the hoisting holes is arranged in the coke dry quenching furnace; lifting the bricklaying hanging scaffold to a preset height; the cross air duct is replaced at the lower part of the bricklaying platform while bricks in the furnace are removed and built by a platform formed on the bricklaying platform; the straight barrel, the lower cone hopper and the upper cone hopper are replaced by the hoisting holes, so that the dismantling and building of the bricks in the furnace can be synchronously performed with the replacement of the cross air duct, and the dismantling and building of the bricks in the furnace can be performed after the cross air duct is replaced, so that the scheme can reduce the time for occupying a dry quenching maintenance network main line on the basis of safety and reliability, shorten the maintenance period, improve the coke quality and reduce the environmental protection pressure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a cross air duct replacing method for a dry quenching furnace provided by the invention;

FIG. 2 is a schematic cross-sectional view of the internal components of a dry quenching furnace;

FIG. 3 is a top view of a dry quenching oven with a bricklaying platform installed;

FIG. 4 is a schematic view after the bricklaying platform has been lifted to a predetermined height;

FIG. 5 is a schematic view of the disassembled and removed cross-shaped air duct being transported out of the furnace through a manhole;

fig. 6 is a schematic view of installing a new cross air duct.

Detailed Description

The core of the invention is to provide a method for replacing the cross air duct of the coke dry quenching furnace, which can reduce the time for occupying the coke dry quenching maintenance network main line, shorten the maintenance period, improve the coke quality and reduce the environmental protection pressure on the basis of safety and reliability.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic view of an embodiment of a cross air duct replacing method for a dry quenching furnace provided by the invention, and the method can include the following steps:

s1: installing a bricklaying hanging scaffold provided with a hoisting hole in the coke dry quenching furnace;

with reference to fig. 2 and fig. 2, which is a schematic cross-sectional view of the inside of a coke dry quenching furnace, it should be noted that the brick laying hanging scaffold is a temporary facility, and the brick laying hanging scaffold can be stabilized in the air in the furnace to form a stable operating platform, so as to facilitate the removal of corbel bricks and lining bricks in the furnace, personnel, materials, bricks, etc. can be placed on the platform, old bricks can be timely removed, new bricks can be timely replenished, and can be removed after use, wherein the hoisting holes can be provided with a shape larger than that of a common hole, and the shape of the holes can be, but not limited to, rectangular, so that a straight cylinder, a lower cone bucket and an upper cone bucket can pass through the hoisting holes, and with reference to fig. 3, fig. 3 is a top view of a coke dry quenching furnace for installing the brick laying hanging scaffold, and it can be seen that the lower cone bucket can pass through the hoisting holes.

S2: lifting the bricklaying platform to a preset height;

referring to fig. 4, fig. 4 is a schematic diagram after the bricklaying hanging scaffold is lifted to a preset height, and it should be noted that the preset height is the height of the replacement position of the corbel brick, so that the cross air duct can be exposed, the corbel brick and the lining brick can be overhauled above the bricklaying hanging scaffold, and meanwhile, the cross air duct can be replaced below the bricklaying hanging scaffold, and the cross air duct and the corbel brick can not be affected with each other.

S3: the cross air duct is replaced at the lower part of the bricklaying platform while the bricks in the furnace are dismantled and built by the platform formed on the bricklaying platform;

that is to say, adopt this kind of hanging scaffold of laying bricks to form a protection canopy, reach the mode of upper and lower two-layer simultaneous operation, the upper strata carries out demolising and building of bracket brick and lining brick, and the cross wind channel is changed to the lower floor, when changing the cross wind channel, passes through the stove earlier and arranges burnt, reduces the coke layer, until the cross wind channel all exposes, sets up binocular 3t hoist engine, and the operating personnel gets into the stove from the manhole, demolishs the logical cross wind channel.

S4: the straight cylinder, the lower cone hopper and the upper cone hopper are replaced by the hoisting holes.

The manhole door at the lower part is 1600mm high and 1000mm wide, because the diameter of the upper cone bucket (phi 2160mm), the lower cone bucket (phi 3500mm) and the straight cylinder (phi 1956mm) is large, the upper cone bucket, the lower cone bucket and the straight cylinder can not enter the furnace through the manhole door at the lower part, so the upper cone bucket, the lower cone bucket and the straight cylinder can only be hoisted into the furnace from a coke loading hole at the top, the hoisting hole of the brick laying hanging tray is opened in advance to accommodate the parts to pass through, when the lower cone bucket is hoisted, the hoisting hole is opened, the lower cone bucket is hoisted and enters the furnace through the rectangular hoisting hole, and a hoisting point is arranged on a beam at the bottom of the brick laying hanging tray to carry out assembling, leveling, aligning and fixing of the straight cylinder, the upper cone bucket and the lower cone bucket, and after the welding operation is qualified.

According to the above description, in the embodiment of the method for replacing the cross air duct of the coke dry quenching furnace provided by the invention, the method comprises the steps of installing a bricklaying hanging scaffold with a hoisting hole in the coke dry quenching furnace; lifting the bricklaying platform to a preset height; the cross air duct is replaced at the lower part of the bricklaying platform while the bricks in the furnace are dismantled and built by the platform formed on the bricklaying platform; the straight cylinder, the lower cone hopper and the upper cone hopper are replaced by the hoisting holes, so that the dismantling and building of the bricks in the furnace can be synchronously performed with the replacement of the cross air duct, and the dismantling and building of the bricks in the furnace can be performed after the cross air duct is replaced, so that the scheme can reduce the time for occupying a dry quenching maintenance network main line on the basis of safety and reliability, shorten the maintenance period, improve the coke quality and reduce the environmental protection pressure.

In a specific embodiment of the above method for replacing the cross air duct of the coke dry quenching furnace, the installing of the bricklaying platform with the hoisting hole in the coke dry quenching furnace may include:

and putting the components of the bricklaying hanging scaffold into the furnace from the manhole door, and assembling the bricklaying hanging scaffold in the furnace.

In this case, during the operation, the coke is discharged to the lower part of the manhole door, the lower manhole door is opened, the operator enters the furnace, and the parts of the bricklaying hanging scaffold are transported into the furnace and assembled into the bricklaying hanging scaffold in the furnace.

In another specific embodiment of the above method for replacing the cross air duct of the dry quenching furnace, the lifting the bricklaying platform to a preset height may include:

and lifting the bricklaying hanging scaffold to a corbel brick replacing part by using a temporary support at the upper part of the lifting machine and a winch.

In another embodiment of the above method for replacing the cross air duct of the dry quenching furnace, replacing the cross air duct at the lower portion of the bricklaying platform may include:

the decomposed and removed cross air duct is transported out of the furnace through a manhole;

and 4 sections of new cross air ducts are transported into the furnace through the manhole for assembly.

Specifically, referring to fig. 5, fig. 5 is a schematic diagram of transporting the disassembled cross air duct to the outside of the furnace through a manhole, the disassembled cross air duct is transported to the outside of the furnace through the manhole by using a winch, and then referring to fig. 6, fig. 6 is a schematic diagram of installing a new cross air duct, the new cross air duct is poured into the furnace from a manhole door, one end of the new cross air duct is inserted into a furnace shell and fixed, the other end of the new cross air duct is supported by steel, a lifting point is arranged by using a cross beam at the lower part of a brick laying hanging scaffold, 4 sections of cross air ducts are respectively lifted for installation, leveling, alignment and fixation, therefore, in the scheme, the disassembled cross air duct at the lower layer is transported out of the manhole door, so that the work of the upper layer and the work of the lower layer cannot affect each other, and the construction period is shortened.

In a preferred embodiment of the above method for replacing the cross air duct of the coke dry quenching furnace, replacing the straight cylinder, the lower cone hopper and the upper cone hopper with the lifting hole may include:

and (4) hoisting the new straight cylinder, the upper conical hopper and the lower conical hopper to the installation position in the furnace through the hoisting hole by using an electric hoist on the hoisting machine, and closing the hoisting hole.

During specific operation, a hoisting hole of the bricklaying hanging scaffold can be opened, a straight cylinder, a lower cone bucket and an upper cone bucket are respectively hung on the air in the furnace through a 5t electric hoist on a coke dry quenching hoister, a bottom cross beam of the hanging scaffold is utilized to set a hanging point, a winch is used for mounting in place and adjusting, welding operation is carried out after the straight cylinder, the lower cone bucket and the upper cone bucket are qualified, then the hoisting hole of the hanging scaffold is closed, the situation that the upper layer and the lower layer operate simultaneously is continuously formed, after assembling and welding of the cross air channel are completed, the anti-abrasion lining plate is hung in the furnace through a manhole door to be mounted, and replacement of the cross air channel is completed.

In conclusion, the brick laying hanging scaffold is utilized, the bricks can be replaced and the cross air duct can be replaced at the same time, the overhauling efficiency is greatly improved, the phenomenon that the coke stopping time is too long is avoided, and the environment is protected.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.