CN108894534B - Sintering desulfurization plant modular dismantling method - Google Patents

Sintering desulfurization plant modular dismantling method Download PDF

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Publication number
CN108894534B
CN108894534B CN201810532265.4A CN201810532265A CN108894534B CN 108894534 B CN108894534 B CN 108894534B CN 201810532265 A CN201810532265 A CN 201810532265A CN 108894534 B CN108894534 B CN 108894534B
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module
columns
dismantled
column
desulfurization
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CN108894534A (en
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李正波
黄飞
王二刚
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MCC5 Group Shanghai Corp Ltd
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MCC5 Group Shanghai Corp Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/08Wrecking of buildings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/08Wrecking of buildings
    • E04G23/082Wrecking of buildings using shears, breakers, jaws and the like

Abstract

The invention discloses a modular dismantling method for a sintering desulfurization factory building, which comprises the following steps of cutting the factory building into a plurality of modules, wherein each module comprises a plurality of columns, selecting a module to be dismantled and cutting off a support beam between the columns, which is positioned below a first set height, in the module; sequentially cutting off part of the columns in each column of the modules to be dismantled; defining a traction column set and connecting the columns which are not cut off in the traction column set with an excavator through a steel wire rope; cutting off each upright post connected with the excavator, and pulling the steel wire rope through the excavator to ensure that the module to be dismantled is unstable and collapses to the ground; disassembling the module to be disassembled collapsed to the ground and then transporting out; and then, according to the steps, the next module to be dismantled is dismantled until all the modules are dismantled. The invention adopts a modularized dismantling mode, has simple operation, is beneficial to shortening the construction period, saving the materials for measures and reducing the construction cost and the safety risk.

Description

Sintering desulfurization plant modular dismantling method
Technical Field
The invention relates to the technical field of structure demolition, in particular to a sintering desulfurization factory building modular demolition method.
Background
In recent years, steel structure plants are widely applied to industrial and mining enterprises, particularly multi-layer light steel structure plants, are convenient to build and have excellent building construction performance, and are particularly suitable for building plants which have small interlayer load and no driving requirements.
Along with the rapid development of the dry desulfurization process of the sintering flue gas circulating fluidized bed, a sintering desulfurization plant can be widely constructed. The sintering desulfurization factory building is generally a multi-span multi-layer light steel structure factory building and generally comprises an upper layer and a lower layer, wherein the upper layer of the first span and the second span is a cloth bag dust removal ash groove, the middle layer is a material transmission pipeline between devices, the lower layer is an ash cleaning cloth bag machine, a pipeline and the like, and the third span and the fourth span are a desulfurization tower, an air inlet pipeline, a circulating ash bin, a lime bin, a desulfurization ash bin and the like. The column of the factory building is generally made of section steel, the columns are reinforced by a supporting beam, steel grating plates are laid on floors, the layers are connected through stairs, and a pneumatic pipeline and a medium pipeline are arranged between the steel grating plates; the periphery and the top plate of the plant are sealed by double-layer sandwich lighting tiles so as to avoid the outward flying of the desulfurized ash.
However, steel-structure plants are easily rusted by air and rainwater in use, or a large number of sintering desulfurization plants need to be dismantled every year due to plant planning. The existing dismantling process of the steel structure factory building is generally carried out from outside to inside and from top to bottom, namely, the dismantling process is carried out according to the reverse order of installation. The method comprises the steps of firstly dismantling equipment such as a quicklime bin, a desulfurization ash bin, an inlet and outlet flue, clearing peripheral areas of a desulfurization plant, then erecting a scaffold between layers of the desulfurization plant, and dismantling wall skins, beams, stand columns, stairs, laminates, equipment pipelines and the like of the desulfurization plant layer by layer from top to bottom by the aid of the scaffold, namely dismantling the upper-layer light steel structure firstly, dismantling the middle-layer steel structure secondly, and then dismantling the upper-layer light steel structure downwards in sequence. The method is complex to operate, the quantity of the scaffold erecting and dismantling processes is large, materials are used for layered dismantling, the time consumption is long, and safety accidents are easy to happen.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a sintering desulfurization factory building modularized dismantling method, which adopts a modularized dismantling mode to ensure that each module is unstable and collapses, is simple to operate, does not need to take and dismantle a scaffold, and can shorten the construction period, improve the construction efficiency, save the measure materials and reduce the construction cost and the safety risk coefficient.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a sintering desulfurization plant modular dismantling method comprises the following steps:
1) dividing and cutting the plant into a plurality of modules along the horizontal direction, wherein each module comprises a plurality of columns which are sequentially arranged, a plurality of rows of inter-column supporting beams which are arranged from top to bottom are arranged between every two adjacent columns, and an inter-column supporting beam is also arranged between every two adjacent columns of each column;
2) selecting one module as a module to be dismantled, and cutting off a support beam between columns below a first set height in the module to be dismantled;
3) at a second set height, sequentially cutting off part of the columns in each column of the module to be disassembled along the reverse direction of the preset collapse direction, wherein the cutting-off quantity of the columns in each column of the module to be disassembled which are sequentially arranged along the reverse direction of the preset collapse direction is sequentially reduced;
4) defining one or more columns of stand columns closest to the preset collapse direction in the module to be dismantled as a traction stand column group, wherein the column number of the stand columns in the traction stand column group is smaller than the total column number of the stand columns in the module to be dismantled, and connecting the stand columns which are not cut in the traction stand column group with an excavator through steel wire ropes;
5) cutting off each upright post connected with the excavator, and pulling the steel wire rope through the excavator to ensure that the module to be dismantled is unstable and collapses to the ground along the preset collapsing direction;
6) disassembling the module to be disassembled collapsed to the ground and then transporting out;
7) and 2) executing the step 2) again to remove the next module to be removed until all the modules are removed.
In the step 4): the horizontal distance between the excavator and the module to be dismantled is more than twice the height of the module to be dismantled.
The stand is H shaped steel, H shaped steel includes web and flange plate, the both ends of web all are connected with the flange plate, still carry out following step before cutting off each stand that is connected with the excavator in step 5): and cutting off the part of the flange plate below the second set height in the uncut upright post of the module to be dismantled.
In the step 5), each upright column connected with the excavator is cut off through a gas cutting gun, the gas cutting gun is arranged on the support frame, the gas cutting gun is connected with an extension rod, and when gas cutting operation is performed, a gas cutting worker holds the extension rod and stands outside the area of the module to be dismantled to perform gas cutting operation on each upright column connected with the excavator.
The collapse directions of all the modules are the same.
Before step 1), the following steps are carried out:
s1) carrying out danger elimination treatment on the plant;
s2) dismantling the inlet flue, the outlet flue and the flue auxiliary equipment;
s3) removing the desulfurization equipment;
s4) removing the dust removing equipment.
The method for carrying out danger elimination treatment on the plant in the step S1) comprises the following steps: and (4) cleaning the desulfurized fly ash, the quicklime and the ash slag, and plugging the energy medium pipeline.
The desulfurization equipment comprises a desulfurization ash bin, a quicklime bin, a circulating ash bin and a desulfurization tower; the method for removing the desulfurization equipment in the step S3) comprises the following steps: the desulfurization ash bin, the quicklime bin and the circulating ash bin are dismantled firstly, and then the desulfurization tower and the accessory equipment thereof are dismantled.
The dust removing equipment comprises a spraying device, a top tank and a bag cage.
The inter-column support beam comprises a cross brace and a cross beam.
The invention has the following beneficial effects: the demolition method provided by the invention adopts a modularized demolition mode, realizes the instability collapse of the modules by enabling each module to gradually lose stability and shift the gravity center, is simple to operate, does not need to take and dismantle a scaffold, shortens the construction period, improves the construction efficiency, saves the measure materials, and reduces the construction cost and the safety risk coefficient.
Drawings
FIG. 1 is a schematic illustration of the demolition of a sintering desulfurization plant of one embodiment of the present invention (third module not shown);
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a flow diagram illustrating the removal of the sintering desulfurization plant of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the column of FIG. 1 being H-section steel;
in the figure: 1. the device comprises a first module, 2, a second module, 3, a third module, 4, the ground, 5, a steel wire rope, 6, a gas cutting separation line, 7, a cross beam, 8, a vertical column, 81, a web plate, 82, a flange plate, 9, a gas cutting gun, 10, a support frame, 11, an excavator, 12, gas cutting personnel, 13, a bag-type dust remover, 14, a desulfurizing tower, 15, a desulfurizing ash bin, 16 and a quicklime bin.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
As shown in fig. 1-3, a method for dismantling a sintering desulfurization plant in a modular manner includes the following steps:
1) as shown in fig. 2, the plant is divided and divided into a plurality of modules along the horizontal direction (from left to right), the position of a gas cutting separation line 6 between each module is shown in fig. 2, each module comprises two columns of upright posts which are arranged in sequence, a plurality of rows of inter-post supporting beams are arranged between two adjacent columns of upright posts, the plurality of rows of inter-post supporting beams are arranged between the two adjacent columns of upright posts from top to bottom, and a plurality of rows of inter-post supporting beams are also arranged between two adjacent upright posts in each column from top to bottom;
wherein, the support beam between the columns comprises a cross brace and a cross beam; the upright column is made of H-shaped steel, and the structure of the upright column is shown in FIG. 4, the H-shaped steel comprises a web plate 81 and flange plates 82, and the flange plates 82 are connected to both ends of the web plate 81.
2) Selecting a module closest to a preset collapse direction as a module to be dismantled, and cutting off a support beam between columns below a first set height in the module to be dismantled; so that the module to be dismantled is supported only by the upright posts below the first set height.
3) At a second set height, sequentially cutting off part of the columns in each column of the module to be disassembled along the reverse direction of the preset collapse direction, wherein the cutting-off quantity of the columns in each column of the module to be disassembled which are sequentially arranged along the reverse direction of the preset collapse direction is sequentially reduced; to increase the likelihood of instability of a column of uprights adjacent to the predetermined collapse direction.
4) Defining a column of upright columns closest to the preset collapse direction in the module to be dismantled as a traction upright column group, wherein the column number of the upright columns in the traction upright column group is smaller than the total column number of the upright columns in the module to be dismantled, and connecting the upright columns 8 which are not cut in the traction upright column group with an excavator 11 through steel wire ropes 5 as shown in figure 1;
the horizontal distance between the excavator 11 and the module to be dismantled is larger than twice the height of the module to be dismantled, so that the module and splashes caused by the module collapse can not affect the excavator when the module to be dismantled collapses, and the safety of constructors can be guaranteed.
5) Cutting off each upright post 8 connected with an excavator 11 in the traction upright post group by using a gas cutting gun 9, so that the module to be disassembled further tends to be unstable, and simultaneously, pulling a steel wire rope 5 by using the excavator 11 so that the module to be disassembled is unstable and collapses to the ground 4 along the preset collapsing direction;
in the process, the excavator 11 pulls the steel wire rope 5 to enable the center of gravity of the module to be dismantled to continuously shift until the center of gravity of the module to be dismantled deviates out of the original area of the module to be dismantled, and the module to be dismantled is completely unstable and collapses.
Wherein, the gas cutting torch 9 is arranged on the supporting frame 10, the gas cutting torch 10 is tied on the extension rod, when gas cutting operation is carried out, a gas cutting person 12 holds the extension rod and stands outside the module area to be dismantled to carry out gas cutting operation on each upright post 8 connected with the excavator 11. Since the whole module to be dismantled is in a state tending to instability when the operation is carried out in the step 4), and the gas cutting personnel 12 still carry out gas cutting operation in the area of the module to be dismantled, the danger is high, the gas cutting personnel can ignite the gas cutting gun 9 outside the area of the module to be dismantled by arranging the extension rod, and can carry out gas cutting on the corresponding stand column by utilizing the extension rod and the support frame 10, so that the safety of the gas cutting personnel 12 is ensured. Preferably, the length of the extension bar is greater than or equal to 5m, and the height of the support frame 10 is 1.2 m.
Further, the number of the gas cutting guns 9 is the same as the number of the columns 8 connected with the excavator 11 in the traction column group, and the columns 8 connected with the excavator 11 in the traction column group and the gas cutting guns 9 are in one-to-one correspondence.
Further, in order to better realize gradual instability of the modules to be dismantled, before cutting off each column connected to the excavator 11 in the traction column set, a part of the flange plates 82 below the second set height in the columns 8 to be dismantled is cut off, the cutting length of the flange plates 82 is 200-500 mm, so that a part of the columns 8 to be dismantled (the part of the flange plates 82 are cut off) which are not cut off are only supported by the web plate 81, and then a part (the part of the flange plates 82 are cut off) of the columns 8 connected to the excavator 11 in the traction column set, which are only supported by the web plate 81, is cut off, so that the operation of cutting off each column 8 connected to the excavator 11 in the traction column set is realized.
6) And disassembling the module to be disassembled collapsed to the ground by adopting a hydraulic scissor machine or a manual gas cutting mode, and loading and transporting the disassembled module to be disassembled by utilizing a clamp machine. This completes the removal of one module.
7) And 2) executing the step 2) again to remove the next module to be removed until all the modules are removed. Preferably, the module adjacent to the module to be dismantled can be selected as the next module to be dismantled, so that the modules collapse in the same direction.
Wherein, the first set height and the second set height can both adopt 1.2 m. The first set height and the second set height may be determined based on the site conditions and the height of the gas cutting person.
In one embodiment, all the modules have the same collapse direction, so that the construction efficiency is improved, constructors can always evacuate in the reverse direction of collapse during collapse, and the safety is better.
In one embodiment, the two end modules can also be made to collapse in opposite directions.
In addition, the following steps are also carried out before the step 1):
s1) carrying out danger elimination treatment on the plant to ensure the environment safety of demolition;
the method for carrying out danger elimination treatment on the plant comprises the following steps: and (4) cleaning the desulfurized ash, the quicklime and the ash, plugging the energy medium pipeline, and testing the electricity when all the electric cables are powered off.
The method for cleaning the desulfurized fly ash, the quicklime and the ash comprises the following steps: cleaning personnel firstly clean a mixture of desulfurized ash, quicklime, ash slag and the like from the upper layer downwards, and then use high-pressure water to wash wall plates, equipment pipelines, floor slabs and the like of a factory building from the upper layer to the lower layer so as to avoid the harm of dust during the dismantling of the factory building; in the process of flushing a workshop with water, desulfurization ash is very easy to slip due to water adhesion, and cleaning personnel must hang labor protection articles such as double-buckle safety belts and masks to prevent falling, skin allergy and dust from entering a respiratory system; the factory building flushing sewage needs to be stored in a sedimentation tank, and is purified and then discharged; the desulfurized fly ash, the quicklime and the ash slag are cleaned, the pipelines, the floor surfaces, the stairs and the like are cleaned, and the operation of dismantling the building is allowed to enter the field after the treading surfaces are dried and do not slip.
S2) dismantling the inlet flue, the outlet flue and the flue auxiliary equipment;
wherein, the flue auxiliary equipment comprises an induced draft fan.
S3) removing the desulfurization equipment;
the desulfurization equipment comprises a desulfurization ash bin 15, a quicklime bin 16, a circulating ash bin and a desulfurization tower 14;
when the desulfurization equipment is dismantled, the desulfurization ash bin 15, the quicklime bin 16 and the circulating ash bin are dismantled firstly, and then the desulfurization tower 14 and the accessory equipment thereof are dismantled.
The concrete method for dismantling the desulfurizing tower 14 and the accessory equipment thereof comprises the following steps: hoisting and removing a top plate of the desulfurizing tower, removing a square section of the desulfurizing tower, a lateral flue at the top of the desulfurizing tower, a straight barrel section of the desulfurizing tower and the like by virtue of a vertical ladder and a hanging scaffold platform which are arranged in the desulfurizing tower 14, and removing ground auxiliary equipment such as a cloth bag ash remover;
after the desulfurization equipment is dismantled, peripheral obstacles in the preset collapse direction of the module are cleaned, and components are prevented from rolling and splashing when the plant collapses to the ground, so that conditions are created for dismantling the plant.
S4) removing the dust removing equipment. The dust removing equipment mainly comprises a spraying device, a top tank and a bag cage.
When the dust removing equipment is removed, firstly hoisting and removing a top tank, a rotary spraying device, a pipeline, a square section of a top outlet pipeline and the like on a top plate of a bag-type dust removing span (defined as a first span and a second span); and then removing the rainproof top cover steel plate of the bag-type dust collector 13, performing annular gas cutting on the airtight top cover of the bag cage, and then hoisting and removing the bag cage to the ground.
The above demolition method is specifically illustrated below by the following sintering dry desulfurization plant:
a sintering dry desulphurization plant, which is a totally enclosed plant with a multilayer light steel structure. A flue system, an absorption tower system, a desulfurization dust remover system, an absorbent preparation and supply system, a desulfurization ash recycling and discharging system, a process water system, an electrical instrument control system and the like are arranged inside and outside the plant.
Wherein the height of the desulfurizing tower 14 reaches 58.9m, and the diameter is about 10 m; 8 sets of bag-type dust collectors 13 are arranged at the top of the main desulfurization workshop, and the elevation reaches 50 m; the upright posts 8 adopt 300X 300H-shaped steel, the cross beams 7 between the posts adopt 250X 250H-shaped steel, and cross braces between the posts adopt steel pipes with phi of 100; the H-section steel includes a web 81 and a flange plate 82. The concrete steps of dismantling are as follows:
1) as shown in fig. 1-2, a factory building is divided into three modules by gas cutting from left to right (horizontal direction), the positions of gas cutting separation lines 6 are respectively a first module 1, a second module 2 and a third module 3 as shown in the figure, each module comprises two rows of columns which are arranged in sequence, each row of columns consists of 6 columns, a plurality of rows of inter-column supporting beams (cross beams 7 and cross braces) are arranged between every two adjacent rows of columns, and an inter-column supporting beam is also arranged between every two adjacent columns 8 of each row of columns;
when the factory building is separated into three modules by gas cutting from left to right, the beam, platform rails, wall skins, top plates and the like of one module can be separated from the adjacent modules by means of the vertical ladder or the suspension cage ladder and wearing a safety hook, a safety belt and the like;
wherein, each column 8 is respectively numbered as column A, column B, column D, column E and column F; the 6 columns of each column are numbered as (I), (II), (III), (IV), (V) and (VI).
2) Selecting a first module 1 as a module to be dismantled;
3) both the cross beams 7 and the cross braces of the first module 1 below the first set height are cut away so that the first module 1 is supported below the first set height only by the uprights 8.
4) And at the second set height, cutting off columns II, IV and V in the columns A of the first module 1 and cutting off columns II and V in the columns B in a gas cutting mode, so that the instability possibility of the columns A is higher than that of the columns B.
5) Defining the column A in the first module 1 as a traction column group, and connecting columns which are not cut off in the traction column group, namely, the columns III and IV with an excavator 11 through a steel wire rope 5 as shown in figure 1;
6) firstly, cutting off all the flange plates 82 of the columns of the first module 1 which are not cut off and are positioned below a second set height, namely cutting off the part of the flange plates 82 of the columns A, the columns C and the columns B and the part of the columns B which are positioned below the second set height (1.2m), so that the parts of the columns A, the columns C and the columns B of the first module 1 and the parts of the columns B which are supported by the webs 81 are only supported by the webs 81 near the second set height, then cutting off the parts of the columns A, the columns C and the columns B which are supported by the webs 81 by a gas cutting gun 9 by a gas cutting person 12, further enabling the first module 1 to be unstable, and simultaneously drawing 5 by an excavator 11 to enable the gravity center of the steel wire rope of the first module 1 to be deviated until the columns A are unstable and collapse, the column A collapses and simultaneously drives the column B to collapse, so that the whole first module 1 collapses to the ground 4 along the preset collapsing direction;
in the process, the columns A, C and C are cut off and simultaneously assisted with the tensile force of the steel wire rope 5, so that the force applied to the first module 1 can be increased, and the first module 1 is more quickly and better unstable.
5) The first module 1 collapsed to the ground 4 is disassembled by adopting a hydraulic scissor machine or a manual gas cutting mode, and the disassembled first module 1 is loaded and transported outside by utilizing a clamp machine. This completes the removal of one module.
Similarly, the second module 2 and the third module 3 are removed in sequence in the above-described manner. The first module 1, the second module 2 and the third module 3 all collapse towards the same direction.
In the process, the sintering desulfurization plant is subjected to modular gas cutting to be separated into three independent modules; and the module upright post is subjected to gas cutting step by step to ensure that the module is gradually unstable, and the center of gravity of the module deviates from the original area by means of the traction force of the excavator 11, so that the module is finally promoted to collapse on the ground. Compared with the scheme that the factory building is dismantled from top to bottom by erecting a scaffold in the prior art, the scheme saves the construction period of 15 days, 15-20 150-ton crawler crane shifts, 200-300 workers and 30-ton measure materials; the whole construction process is safe and controlled, the construction period is greatly shortened, the progress is accelerated, and good economic and social benefits are achieved.
The modular separation of the factory building is carried out in the horizontal direction, the support beams among columns in the module are firstly cut off, a part of columns in the columns are cut off, a part of flange plates of the rest columns in the module are cut off, the part which is only supported by the web plate is cut off in the rest columns of the traction columns, the steel wire rope 5 is pulled, the module is gradually unstable, and finally the center of gravity of the module is shifted out of the original area of the module to collapse. This embodiment make full use of demolishs thing gravity, falls it on ground, more does benefit to and reduces high altitude construction and hoist and mount and demolishs the potential safety hazard, reduces and demolishs the safe risk. In addition, in the embodiment, gas cutting decomposition or mechanical demolition is performed after the module collapses to the ground, so that the operation is easier and the demolition time is shorter compared with the prior art in which a 'reverse-order installation' demolition process is adopted and a mode of layered demolition, component-by-component hoisting and demolition is adopted.
The dismantling method of the embodiment can also be used for dismantling construction of a single-layer workshop with a small span of heavy steel structure, such as an industrial workshop with a traveling beam.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A sintering desulfurization factory building modularized dismantling method is characterized by comprising the following steps:
1) dividing and cutting the plant into a plurality of modules along the horizontal direction, wherein each module comprises a plurality of columns which are sequentially arranged, a plurality of rows of inter-column supporting beams which are arranged from top to bottom are arranged between every two adjacent columns, and an inter-column supporting beam is also arranged between every two adjacent columns of each column;
2) selecting one module as a module to be dismantled, and cutting off a support beam between columns below a first set height in the module to be dismantled;
3) at a second set height, sequentially cutting off part of the columns in each column of the module to be disassembled along the reverse direction of the preset collapse direction, wherein the cutting-off quantity of the columns in each column of the module to be disassembled which are sequentially arranged along the reverse direction of the preset collapse direction is sequentially reduced;
4) defining one or more columns of stand columns closest to the preset collapse direction in the module to be dismantled as a traction stand column group, wherein the column number of the stand columns in the traction stand column group is smaller than the total column number of the stand columns in the module to be dismantled, and connecting the stand columns which are not cut in the traction stand column group with an excavator through steel wire ropes;
5) cutting off each upright post connected with the excavator, and pulling the steel wire rope through the excavator to ensure that the module to be dismantled is unstable and collapses to the ground along the preset collapsing direction;
6) disassembling the module to be disassembled collapsed to the ground and then transporting out;
7) and 2) executing the step 2) again to remove the next module to be removed until all the modules are removed.
2. The modular demolition method of a sintering desulfurization plant according to claim 1, characterized in that in the step 4): the horizontal distance between the excavator and the module to be dismantled is more than twice the height of the module to be dismantled.
3. The modular demolition method of a sintering desulfurization plant according to claim 1, wherein the columns are H-shaped steel, the H-shaped steel comprises a web and a flange plate, the flange plate is connected to both ends of the web, and the following steps are further performed before cutting off each column connected with the excavator in the step 5): and cutting off the part of the flange plate below the second set height in the uncut upright post of the module to be dismantled.
4. The modular demolition method of a sintering desulfurization plant as recited in claim 1, wherein in the step 5), each upright post connected with the excavator is cut by a gas cutting gun, the gas cutting gun is arranged on the supporting frame, the gas cutting gun is connected with an extension rod, and when performing gas cutting operation, a gas cutting person holds the extension rod to stand outside the area of the module to be demolished to perform gas cutting operation on each upright post connected with the excavator.
5. The method for dismantling the sintering desulfurization plant building in a modular manner as recited in claim 1, wherein all of said modules collapse in the same direction.
6. The modular demolition method of a sintering desulfurization plant according to claim 1, characterized in that the following steps are further performed before the step 1):
s1) carrying out danger elimination treatment on the plant;
s2) dismantling the inlet flue, the outlet flue and the accessory equipment;
s3) removing the desulfurization equipment;
s4) removing the dust removing equipment.
7. The method for dismantling the sintering desulfurization plant building in a modular manner as recited in claim 6, wherein the method for performing the danger elimination treatment on the plant building in the step S1) comprises: and (4) cleaning the desulfurized fly ash, the quicklime and the ash slag, and plugging the energy medium pipeline.
8. The sintering desulfurization factory building modular dismantling method as set forth in claim 6, characterized in that said desulfurization equipment comprises a desulfurization ash bin, a quicklime bin, a circulating ash bin and a desulfurization tower; the method for removing the desulfurization equipment in the step S3) comprises the following steps: the desulfurization ash bin, the quicklime bin and the circulating ash bin are dismantled firstly, and then the desulfurization tower and the accessory equipment thereof are dismantled.
9. The modular demolition method of a sintering desulfurization plant according to claim 6, wherein the dust removing equipment comprises a spraying device, a top tank and a bag cage.
10. The method for dismantling the sintering desulfurization plant building in a modular manner as recited in claim 1, wherein the inter-column support beams comprise cross braces and cross beams.
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CN110124396A (en) * 2019-06-21 2019-08-16 五冶集团上海有限公司 Gravitational precipitator method for dismounting
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