CN111721139A - Novel dry-method cement production line decomposing furnace crust cleaning method - Google Patents
Novel dry-method cement production line decomposing furnace crust cleaning method Download PDFInfo
- Publication number
- CN111721139A CN111721139A CN202010493142.1A CN202010493142A CN111721139A CN 111721139 A CN111721139 A CN 111721139A CN 202010493142 A CN202010493142 A CN 202010493142A CN 111721139 A CN111721139 A CN 111721139A
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- Prior art keywords
- winch
- pipe
- crust
- dismantling
- steel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
Abstract
The invention provides a novel decomposition furnace crust cleaning method for a dry-method cement production line, belonging to the technical field of decomposition furnace crust cleaning. This novel dry process cement manufacture line decomposition furnace crust clearance worker method, during the use, open manhole door through the manual work, then install the hoist engine, make wire rope on the hoist engine stretch into the inside of decomposition furnace, then with the first clean up of some crust in the decomposition furnace, then here with long frame pipe put up a step frame, the firm frame plate is pricked to the canopy, at this moment, carry out the hanging flower basket equipment through steel pipe and hanging flower basket piece, and be connected with the wire rope on hoist engine surface, can conveniently transport the crust of decomposition furnace inside like this, clearing up the different positions to the decomposition furnace, adopt different safeguard measure. When the descaling device is used for descaling, the descaling safety can be greatly improved, the descaling difficulty is reduced, the risk of operators is reduced, the descaling device is favorable for better descaling in the decomposing furnace, and the descaling efficiency is improved.
Description
Technical Field
The invention relates to the field of decomposing furnace crust cleaning, in particular to a novel decomposing furnace crust cleaning method for a dry-process cement production line.
Background
The decomposing furnace is a novel thermal device which can simultaneously carry out fuel combustion, heat exchange and decomposition reaction; it is of a wide variety of types and forms. The basic principle is that preheated raw meal, a certain amount of fuel and a proper amount of hot gas are fed into a decomposing furnace at the same time, and the raw meal is in a suspension or boiling state in the furnace; the fuel is flameless combusted at the temperature below 900 ℃, and the heat transfer and calcium carbonate decomposition processes are completed at high speed: the combustion time of the fuel and the time required for decomposing the calcium carbonate are about 2-4s, the decomposition rate of the calcium carbonate in the raw material can reach 85-95 percent, and the temperature of the preheated raw material is 800-850 ℃. Solid, liquid or gas fuel can be used in the decomposing furnace, coal powder is mainly used as fuel in China, and the fuel added into the decomposing furnace accounts for about 55-65% of the total fuel.
At present, the existing dry-method cement production line decomposition furnace crust cleaning method is used for cleaning the interior of a decomposition furnace, so that the cleaning difficulty is high, the danger is high, and the cleaning efficiency is low.
Disclosure of Invention
In order to make up for the defects, the invention provides a novel dry-method cement production line decomposing furnace crust cleaning method, aiming at solving the problems of high cleaning difficulty, high risk and low cleaning efficiency of the dry-method cement production line decomposing furnace crust cleaning method.
The invention is realized by the following steps:
the invention provides a novel dry-method cement production line decomposing furnace crust cleaning method, which comprises the following steps:
s1: unsealing the manhole door, enabling constructors to stand stably and firmly and fasten safety belts, dismantling a door shaft or a bolt on the manhole door through a wrench, and placing the manhole door in a stable place;
s2: a winch is installed, fixed and detached, a steel wire rope on the winch is fixedly provided with a suspender, a slider is hung on the winch, a safety belt is tied, and whether the suspender is safe and firm or not is checked at any time;
s3: the winch is used for feeding and discharging materials, two ends of the winch are tied with steel wire ropes to be horizontally hung when the steel wire ropes are fed into a pipe rack, the steel bars are used for hooking objects when the steel wire ropes are fed, the ropes, pulleys, hooks and baskets are intact and firm when the materials are hoisted, and no person is left below the winch when the materials are hoisted;
s4: checking the inside of each cylinder, when checking the accumulated ash and crusts in each cylinder, checking from top to bottom, and cleaning the crusts at the edge of the manhole door to prevent people from being injured due to falling materials;
s5: the frame is built and disassembled in the cylinder, the air locking valve covers of all levels are opened to check whether the blanking valve plates of all levels are intact, if the valve plates are burnt out, the bamboo frame plate iron wires are necessary to be used for sealing and sealing, and the construction is carried out, when the frame pipes and the frame plate buckles are selected and transported, the safety of the frame materials is firstly checked, and a scaffold is built;
s6: dismantling, fastening a safety belt when welding cramps, supporting a mold, pouring and demolding are dismantled, propping with a steel pipe when the cracked big castable is dismantled, dismantling the cracked big castable from top to bottom, dismantling the cracked big castable at the top, standing outside the shell, dismantling downwards from a pouring hole, strictly forbidding a barrel for dismantling, allowing feet to step on the cramps which are not completely welded when welding cramps, strictly forbidding to see the mold under the pouring of a straight wall and the large-area castable at the top, and not completely dismantling the wood when the large-area castable is demoulded.
In one embodiment of the present invention, the diameter of the wire rope of the winding machine in the step S2 is 16mm four-strand fixed suspension rod.
In an embodiment of the invention, when the steel wire rope is removed in the step S2, the legs and feet are noticed to prevent the rope from winding around the legs and feet, the winch is vertically aligned with the center line of the guide pulley, the distance between the winch and the pulley is not less than 15 m, and the ground anchor pulley is aligned to prevent rope climbing, shaft winding and rope twisting.
In an embodiment of the present invention, the cylinder in step S4 includes a goose-leg elbow, a decomposition furnace, a throat, a smoke chamber, a kiln arch, a blanking tongue, a cyclone, and an air duct.
In one embodiment of the present invention, when the inner diameter of the cylinder exceeds 6 meters in step S5, the pipe is firmly connected by 3-4 lap joints of the rotary clamp, and the cylinder is locked by the transverse pipe.
In an embodiment of the present invention, in step S2, a fixed hoisting cantilever is installed, the hoisting cantilever is made of 125a i-steel, and two sides of the end of the i-steel exposed to 850mm are reinforced with channel steel.
In an embodiment of the present invention, in step S2, a hanging basket is disposed below the suspension rod, a protective rail is disposed at the feeding port of the hanging basket, and the hanging basket is hung from the suspension rod by four wire rope fasteners with the same length and diameter of 12 mm.
In one embodiment of the invention, the length, width and height of the hanging basket are respectively 2.5m, 3m and 0.8m, six hanging basket pieces which are made of a steel pipe with the diameter of 25mm in advance enter from the manhole door to be combined into the hanging basket.
In one embodiment of the invention, when the smoke chamber, the kiln tail funnel and the kiln tail are used for blanking the tongue, a purpose-made inflatable cushion can be placed on the upper shed of the smoke chamber for safety protection to prevent the goose neck tube from decomposing falling objects in the furnace and injuring people.
In one embodiment of the invention, when the cyclone and the air pipe are constructed, in order to ventilate in the pipe, when people enter the discharging pipe, a special umbrella type protective net can be placed at the lower cone of the cyclone to prevent people from being injured by falling objects in the cyclone and the air pipe.
The invention has the beneficial effects that: the novel dry-method cement production line decomposing furnace crust cleaning method obtained by the design has the advantages that when the method is used, the manhole door is opened manually, then the winch is installed, the steel wire rope on the winch extends into the decomposing furnace, then a part of crusts in the decomposing furnace are cleaned up firstly, then a step frame is built by long frame pipes, a shed is firmly tied to frame plates, at the moment, the hanging basket assembly is carried out by steel pipes and hanging basket pieces, and is connected with a steel wire rope on the surface of the winch, so that the crusts in the decomposing furnace can be conveniently transported, when different parts of the decomposition furnace are cleaned, different protective measures are adopted, so that when the crust is cleaned, the safety of clearance that can be great improvement reduces the clearance degree of difficulty and reduces operating personnel's risk, has the benefit simultaneously and clears up the interior crust of decomposition furnace better, improves the efficiency of clearance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The invention provides a novel dry-method cement production line decomposing furnace crust cleaning method, which comprises the following steps:
s1: unsealing the manhole door, enabling constructors to stand stably and firmly and fastening safety belts, dismantling a door shaft or a bolt on the manhole door through a wrench and placing the door shaft or the bolt in a stable place, wherein the diameter of the steel wire rope of the S2 winch adopts four strands of fixed hanging rods with the length of 16mm, so that the installation strength can be improved and the safety of the steel wire rope is improved when the steel wire rope is connected.
S2: the installation is fixed, demolish the hoist engine, and wire rope on the hoist engine is fixed with the jib, hangs the top slider and ties the safety belt, and it is safe firm to look over the jib at any time, when the installation was demolishd wire rope in step S2, the leg is noticed, prevents to be twined the leg by the rope, and the hoist engine is adjusted well perpendicularly with the guide pulley central line, and the hoist engine is apart from the pulley and is not less than 15 meters, and the earth anchor pulley is adjusted well, prevents to have rope climbing, spool, hank rope phenomenon, can improve the security of clearance through such setting and operation. A fixed winch cantilever beam is installed in the step S2, the winch cantilever beam is made of 125a I-steel, and two sides of an I-steel end exposed to 850mm are reinforced by channel steel, so that the fixed winch cantilever beam can be conveniently installed and connected with external equipment, and the practicability is improved; a hanging basket is arranged below the hanging rod in the step S2, a protective railing is arranged at a feeding port of the hanging basket, the hanging basket is firmly hung with the hanging rod through four steel wire rope buckles with the same length and the diameter of 12mm, and the hanging basket is arranged; the length, width and height of the hanging basket are respectively 2.5m, 3m and 0.8m, six hanging basket pieces which are made of a steel pipe with the diameter of 25mm are arranged in advance and enter from the manhole door to be combined into the hanging basket, and crusts in the decomposing furnace can be conveniently transported.
S3: the winch is used for feeding and discharging materials, two ends of the winch are tied with steel wire ropes for flat hoisting when the winch is used for erecting a pipe, the materials are hooked by the steel bars when the materials are collected, the ropes, the pulleys, the hooks and the basket are intact and firm when the materials are hoisted, and no person is left below the winch when the winch is hoisted, so that the safety can be greatly improved and the working efficiency can be improved when the crusting is cleaned.
S4: checking in each barrel, checking from top to bottom when checking the accumulated ash and crusting in each barrel, cleaning the crusting on the edge of a manhole door to prevent people from being damaged by falling materials, wherein in the step S4, the barrel comprises a goose-leg elbow, a decomposing furnace, a throat, a smoke chamber, a kiln tail arch, a blanking tongue, a cyclone barrel and an air pipe, and if the accumulated ash and crusting in the barrel are excessive, the first party is required to carry out blasting; when blasting, the system constructors must go out of the barrel completely, thus the practical guard is obtained. And after blasting, the barrel is knocked and hammered by a steel pipe and a second hammer, and the barrel can enter the barrel to work without potential safety hazard after inspection. If the goose shin pipe elbow and the decomposing furnace are extremely serious and cannot be blasted in the first place, a steel pipe and a second hammer are used for knocking and smashing the cylinder body or a foot stand is arranged outside the cylinder body, a hole is vertically formed in the center of the decomposing furnace by 400mm multiplied by 400mm after the serious crust is cleaned up by cutting the hole from top to bottom, and a 2-3 ton winch is stably installed on the upper layer; on one side of the goose shin pipe elbow or when the opening door is 500mm multiplied by 500mm, after the inner deposited ash is skinned and cleaned, 2 are used: a layer of frames are built on steel frame pipes of 4 meters and 3 meters in length, shed binding frame plates are used as a platform for binding a hanging basket (2.5 m multiplied by 3-4 m), four corners of the hanging basket are firmly buckled and hung by 4 steel wire ropes with the same length phi 12, and a danger source is removed from top to bottom. The interphone is opened for the winch and the inner barrel danger eliminating person (a safety belt is tied and a safety rope is additionally arranged) to ensure the smoothness all the time, so that the safety use of the winch is ensured.
S5: the frame is assembled and disassembled in the cylinder, the air locking valve covers at all levels are opened to check whether the blanking valve plates at all levels are intact, if the valve plates are burnt out, the bamboo frame plate iron wires are necessary to be used for sealing and sealing firmly, people enter the construction, when the frame pipes and the frame plate buckles are selected and transported, the safety of the frame materials is firstly checked, a scaffold is assembled, when the inner diameter of the cylinder exceeds 6 meters in the step S5, the connecting pipes are firmly connected by 3-4 lap joints of the rotary clamps, and the outside of the cylinder is blocked by the transverse pipes, so that the installation is convenient, the disassembly is convenient, and the firmness degree of the device is ensured; when the smoke chamber, the kiln tail funnel and the kiln tail blanking tongue are constructed, a purpose-made inflatable cushion can be placed on a top shed of a throat of the smoke chamber to prevent falling objects in a gooseneck decomposition furnace from hurting people, and used as safety protection; the arrangement of the special inflatable cushion and the special umbrella type protective net can support operators and reduce casualty risks of the operators in the cleaning process.
S6: dismantling, fastening a safety belt when welding cramps, supporting a mold, pouring and demolding are dismantled, propping with a steel pipe when the cracked big castable is dismantled, dismantling the cracked big castable from top to bottom, dismantling the cracked big castable at the top, standing outside the shell, dismantling downwards from a pouring hole, strictly forbidding a barrel for dismantling, allowing feet to step on the cramps which are not completely welded when welding cramps, strictly forbidding to see the mold under the pouring of a straight wall and the large-area castable at the top, and not completely dismantling the wood when the large-area castable is demoulded.
The working principle of the novel dry-method cement production line decomposing furnace crust cleaning method is as follows: during the use, open the manhole door through the manual work, then install the hoist engine, make the wire rope on the hoist engine stretch into the inside of dore furnace, then with the first clean up of some crust in the dore furnace, then use 2 here: 4 meters, 3 meters long frame pipe has built a step, firm frame plate is pricked to the canopy, at this moment carry out the hanging flower basket equipment through steel pipe and hanging flower basket piece, and be connected with the wire rope on hoist engine surface, can conveniently transport the crust of decomposition furnace inside like this, clearing up different positions to the decomposition furnace, adopt different safeguard procedures, when carrying out the crust clearance like this, the security of the improvement clearance that can be great, reduce the clearance degree of difficulty and reduce operating personnel's risk, it clears up to have the better crust in the decomposition furnace of using simultaneously, the efficiency of the improvement clearance.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The novel dry-method cement production line decomposing furnace crust cleaning method is characterized by comprising the following steps:
s1: unsealing the manhole door, enabling constructors to stand stably and firmly and fasten safety belts, dismantling a door shaft or a bolt on the manhole door through a wrench, and placing the manhole door in a stable place;
s2: a winch is installed, fixed and detached, a steel wire rope on the winch is fixedly provided with a suspender, a slider is hung on the winch, a safety belt is tied, and whether the suspender is safe and firm or not is checked at any time;
s3: the winch is used for feeding and discharging materials, two ends of the winch are tied with steel wire ropes to be horizontally hung when the steel wire ropes are fed into a pipe rack, the steel bars are used for hooking objects when the steel wire ropes are fed, the ropes, pulleys, hooks and baskets are intact and firm when the materials are hoisted, and no person is left below the winch when the materials are hoisted;
s4: checking the inside of each cylinder, when checking the accumulated ash and crusts in each cylinder, checking from top to bottom, and cleaning the crusts at the edge of the manhole door to prevent people from being injured due to falling materials;
s5: the frame is built and disassembled in the cylinder, the air locking valve covers of all levels are opened to check whether the blanking valve plates of all levels are intact, if the valve plates are burnt out, the bamboo frame plate iron wires are necessary to be used for sealing and sealing, and the construction is carried out, when the frame pipes and the frame plate buckles are selected and transported, the safety of the frame materials is firstly checked, and a scaffold is built;
s6: dismantling, fastening a safety belt when welding cramps, supporting a mold, pouring and demolding are dismantled, propping with a steel pipe when the cracked big castable is dismantled, dismantling the cracked big castable from top to bottom, dismantling the cracked big castable at the top, standing outside the shell, dismantling downwards from a pouring hole, strictly forbidding a barrel for dismantling, allowing feet to step on the cramps which are not completely welded when welding cramps, strictly forbidding to see the mold under the pouring of a straight wall and the large-area castable at the top, and not completely dismantling the wood when the large-area castable is demoulded.
2. The method as claimed in claim 1, wherein the winding wire rope of step S2 is made of four fixed hanger rods with a diameter of 16 mm.
3. The method as claimed in claim 1, wherein when the steel wire rope is removed in step S2, the legs are noticed to prevent the rope from being entangled with the legs, the winch is aligned with the center line of the guide pulley vertically, the distance from the winch to the pulley is not less than 15 m, and the ground anchor pulley is aligned to prevent rope climbing, winding shaft and rope twisting.
4. The method as claimed in claim 1, wherein the barrel in step S4 comprises a gooseneck elbow, a decomposing furnace, a throat, a smoke chamber, a kiln tail arch, a blanking tongue, a cyclone and an air duct.
5. The method as claimed in claim 4, wherein in step S5, when the inner diameter of the cylinder exceeds 6m, the pipe is firmly connected by 3-4 pieces of overlap joint of the rotary clips, and the outside of the cylinder is blocked by the transverse pipe.
6. The method as claimed in claim 1, wherein step S2 is implemented by installing a fixed hoisting cantilever beam made of 125a i-steel, and reinforcing both sides of the 850mm exposed end of the i-steel with channel steel.
7. The method as claimed in claim 1, wherein a hanging basket is arranged below the hanging rod in the step S2, a protective rail is arranged at a feeding port of the hanging basket, and the hanging basket is hung on the hanging rod through four steel wire rope fasteners with the same length and diameter of 12 mm.
8. The method for cleaning crust of decomposing furnace in dry cement production line according to claim 7, wherein the basket has length, width and height of 2.5m, 3m and 0.8m, and six basket pieces made of steel pipe with phi 25mm are assembled into basket from manhole door.
9. The method as claimed in claim 4, wherein a purpose-made inflatable cushion is placed on the top of the throat of the smoke chamber to protect safety when the tongue is used to prevent the falling material in the gooseneck decomposing furnace from hurting people.
10. The method as claimed in claim 4, wherein a special umbrella-type protecting net is placed at the lower cone of the cyclone for safety protection when the cyclone and the air pipe are constructed and people enter the discharging pipe to prevent the falling objects in the cyclone and the air pipe from hurting people during the ventilation in the pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493142.1A CN111721139B (en) | 2020-06-03 | 2020-06-03 | Dry-method cement production line decomposing furnace crust cleaning method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493142.1A CN111721139B (en) | 2020-06-03 | 2020-06-03 | Dry-method cement production line decomposing furnace crust cleaning method |
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| CN111721139A true CN111721139A (en) | 2020-09-29 |
| CN111721139B CN111721139B (en) | 2021-10-26 |
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| CN210228927U (en) * | 2019-03-04 | 2020-04-03 | 滕州大鑫炉窑工程有限公司 | Safe construction structure for maintenance of clean leather of cement kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103322825A (en) * | 2013-07-16 | 2013-09-25 | 怀宁上峰水泥有限公司 | Cement production crusting clearing method |
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| CN108662600A (en) * | 2018-03-29 | 2018-10-16 | 中信重工机械股份有限公司 | A kind of cleaning system and method for cement producing line kiln tail smoke-box blanking slope skinning |
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