CN111363563A - Grouting sealing system and method for coke oven gas lower spray pipe brick gas channel full slurry method - Google Patents
Grouting sealing system and method for coke oven gas lower spray pipe brick gas channel full slurry method Download PDFInfo
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- CN111363563A CN111363563A CN202010189534.9A CN202010189534A CN111363563A CN 111363563 A CN111363563 A CN 111363563A CN 202010189534 A CN202010189534 A CN 202010189534A CN 111363563 A CN111363563 A CN 111363563A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B29/00—Other details of coke ovens
- C10B29/06—Preventing or repairing leakages of the brickwork
Abstract
The invention discloses a grouting sealing system and method for a coke oven gas lower nozzle brick gas channel full slurry method, and relates to the technical field of coke oven thermal state engineering; the mortar spraying pipe is arranged at the lower end of the brick gas channel, the mortar spraying pipe extends upwards into the brick gas channel and is connected with the lower spray pipe four-way through a quick sealing joint in a sealing manner, the mortar in the mortar spraying pipe is poured into the brick gas channel through the air compression system, and the amount of the mortar in the mortar spraying pipe is configured so that the height of the mortar poured into the brick gas channel is higher than the position 50mm above the horizontal brick joint of the pipe brick of the top-layer gas channel in the brick gas channel; by implementing the technical scheme, the one-time full-height integral grouting sealing effect can be achieved by controlling the mud amount, the grouting sealing quality of the brick gas channel of the lower spray pipe of the coke oven gas is improved, the construction period is shortened, the construction cost is reduced, the subsequent repairing processes of the brick gas channel can be effectively reduced, the construction cost is reduced, and the method has great popularization and use values.
Description
Technical Field
The invention relates to the technical field of coke oven thermal state engineering, in particular to a system and a method for grouting and sealing a coke oven gas lower nozzle brick gas channel by a full slurry method.
Background
After the construction of the coke oven cold state engineering is completed and before the coke oven is produced and used, the hot state engineering of the coke oven body is carried out, the coke oven body is heated and dried, and the coke oven can be produced only when the coke oven body is in a high temperature use state. The brick gas channel is a channel for coke oven gas to enter a coke oven for combustion through the gas lower nozzle, so that the coke oven gas enters the combustion chamber for combustion through the brick gas channel to provide heat for coke oven production; the brick gas channel is built by refractory bricks of specific models and clay ash, when a coke oven body is subjected to thermal state oven drying before start-up, the coke oven building body expands, so that refractory slurry between bricks cracks, and consequently, brick seam cracks of the lower nozzle brick gas channel are generated, the brick seam cracks can generate gas leakage during coke oven production, the temperature and production of a coke oven combustion chamber are seriously influenced, and further, the safety production of a coke oven regenerator is seriously influenced.
Therefore, in order to solve the technical problems, a need exists for a system and a method for grouting and sealing a coke oven gas lower nozzle brick gas channel by a full slurry method, which are researched and designed by technicians in the field and are applied to the start of thermal engineering of a coke oven body, when the temperature of a thermal oven reaches 800 ℃, grouting and sealing brick joints of the coke oven lower nozzle brick gas channel; the method is also suitable for maintaining the pipe brick joint grouting seal of the lower spray pipe gas pipeline in the coke oven production, and ensures that the gas leakage does not occur in the lower spray pipe brick gas pipeline.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a full-grouting sealing system for a brick gas channel of a lower nozzle of coke oven gas, which aims to achieve a one-time full-height integral grouting sealing effect by controlling the amount of mud, improve the grouting sealing quality of the brick gas channel of the lower nozzle of coke oven gas, shorten the construction period, reduce the construction cost, have good grouting sealing effect, can obviously reduce the subsequent repairing procedures of the brick gas channel, reduce the construction cost and have great popularization and use values.
The technical scheme adopted by the invention is as follows:
the grouting sealing system comprises a lower jet pipe brick gas channel of coke oven gas, a full-slurry grouting method, a grouting sealing system and a grouting sealing system, wherein the brick gas channel comprises a plurality of layers of gas channel pipe bricks, a lower jet pipe cross joint is arranged at the lower end of the brick gas channel and is used for connecting a gas transverse pipe communicated with a coke oven, and the grouting sealing system comprises
The guniting pipe is arranged at the lower end of the brick gas channel, extends upwards into the brick gas channel and is connected with the lower spray pipe four-way in a sealing way through a quick sealing joint;
the guniting rubber pipe is arranged between the guniting tank and the guniting pipe and is used for communicating the guniting tank with the guniting pipe; a guniting tank valve is arranged at the joint of the guniting tank and the guniting rubber pipe, and an air release valve is arranged on the guniting tank;
the grout returning branch pipe is arranged on the grout spraying pipe and is positioned below the quick sealing joint, and a grout returning valve is arranged on the grout returning branch pipe;
a pulp return rubber pipe is arranged between the pulp return branch pipe and the pulp return tank and is used for communicating the pulp return branch pipe with the pulp return tank;
and the air compression system is used for providing pressure for the guniting tank so as to fill the slurry in the guniting tank into the brick gas channel, and the amount of the slurry in the guniting tank is configured so that the height of the slurry filled into the brick gas channel is higher than the position 50mm above the horizontal brick joint of the top layer gas channel pipe brick in the brick gas channel.
Preferably, the air compression system comprises an external air compressor and a compressed air pipe connected with the external air compressor, a compressed air rubber pipe is arranged between the compressed air pipe and the guniting tank, and a compressed air valve is arranged at the joint of the guniting tank and the compressed air rubber pipe.
Preferably, a pressure gauge is arranged on the guniting tank and used for measuring the actual pressure parameter value in the guniting tank. And when grouting and sealing, observing a pressure gauge on the guniting tank, and determining the actual parameter value of the compressed air pressure in the guniting tank.
Preferably, the guniting pipe is vertically arranged, and the grout returning branch pipe is obliquely arranged along the lateral direction of the guniting pipe. The design is prefabricated in advance, and the size design precision of a guniting pipe and a grout returning branch pipe is guaranteed, so that the grouting circulation after grouting and sealing is guaranteed.
Preferably, the lateral direction of the guniting pipe is provided with a communicating hole matched with the inner diameter of the slurry return branch pipe, so that the slurry return branch pipe corresponds to the communicating hole and is welded with the guniting pipe, the connection stability of the guniting pipe and the slurry return branch pipe is ensured, prefabrication can be carried out in advance, the operation speed block is disassembled and installed, and the grouting sealing operation efficiency is improved.
Preferably, the inner diameter of the slurry return branch pipe is the same as that of the slurry spraying pipe; the inner diameter of the slurry return rubber pipe is the same as that of the slurry spraying pipe, so that the slurry circulation in the slurry return process is ensured.
Preferably, the inner diameter of the guniting rubber tube is the same as that of the guniting pipe, so that the mud flowing performance in the grouting process is guaranteed, the grouting speed is convenient to control, and the actual, rapid and effective grouting and sealing effects are achieved.
On the other hand, the invention also provides a full-slurry grouting sealing method for the brick gas channel of the lower nozzle of the coke oven gas, which utilizes the full-slurry grouting sealing system for the brick gas channel of the lower nozzle of the coke oven gas to seal and specifically comprises the following steps:
s1, preparation stage: selecting a field outside the coke oven, pressing the diameter of the nozzle brick gas channel and the grouting sealing height to manufacture a test steel pipe, mounting the test steel pipe according to the height position of the nozzle brick gas channel under the coke oven gas, wherein the test steel pipe is used for simulating the brick gas channel, and then mounting the grouting sealing system;
s2, parameter determining stage: determining the amount of mud filled into a grout spraying tank according to the diameter of a brick gas channel and the grouting sealing height, determining the pressure value of grouting compressed air, and determining grouting sealing time;
s3, grouting and sealing: when the oven drying temperature of the coke oven reaches 800 ℃, grouting and sealing the lower nozzle brick gas duct according to the experimental parameters determined in the step S2, opening a valve of a guniting tank, slowly opening a compressed air valve, and completely filling the guniting tank slurry determined in the guniting tank into the brick gas duct so that the height of the slurry filled into the brick gas duct is 50mm higher than the position of a horizontal brick joint of a top layer gas duct pipe brick in the brick gas duct, and staying for a certain time to achieve grouting and sealing time, thereby completing grouting and sealing operation;
s4, pressure relief and pulp return stage: closing the compressed air valve, opening a gas release valve on the gas injection tank, and opening a slurry return valve on the slurry return branch pipe to enable slurry in the brick gas channel to flow back into the slurry return tank until slurry return is completed;
s5, cleaning: the guniting pipe and the quick sealing joint are disassembled to dredge the brick gas channel, so that the smoothness of the brick gas channel is ensured;
and S6, discharging all the residual slurry in the guniting tank, loading the residual slurry into the guniting tank of the grouting sealing system according to the determined slurry amount of the next brick gas channel, repeating the steps S1-S5, and performing grouting sealing operation on all the lower nozzle brick gas channels one by one.
Preferably, in the grouting and sealing stage of step S3, according to the determined parameter of the amount of slurry in step S2, only the actual amount of slurry for grouting and sealing the pipe brick of the current lower nozzle gas pipe is loaded into the slurry tank, i.e., the slurry in the slurry tank is operated once, and only the current brick gas pipe is grouted and sealed, so that the full-height full-slurry method is achieved by controlling the amount of slurry.
Preferably, the step S1 of installing the grout sealing system includes the steps of:
step one, manufacturing a guniting pipe according to the diameter of a brick gas channel and the grouting sealing height;
step two, removing a pipe cap and a pipe plug at the four-way part of the lower spray pipe of the brick gas channel and plugging the small hole plate part at one side of the four-way part of the lower spray pipe, which is close to the transverse pipe of the gas, by using a rubber pad and cotton yarn;
thirdly, mounting a guniting pipe at the bottom of the four-way lower nozzle, and sealing by using a quick sealing joint;
and fourthly, communicating the guniting pipe with the guniting tank by using a guniting rubber pipe, communicating the grout returning branch pipe with the grout returning tank by using a grout returning rubber pipe, and installing an air compression system on one side of the guniting tank to complete the installation of the grouting sealing system.
As described above, the present invention has at least the following advantages over the prior art:
1. the grouting sealing system achieves the effect of one-time full-height integral grouting sealing by controlling the amount of the slurry, can effectively improve the grouting sealing quality of the coke oven gas lower nozzle brick gas channel, can effectively reduce more complicated sealing procedures, achieves the advantages of simple procedures, convenient operation, construction period saving, construction cost reduction and has great popularization and use values.
2. The grouting sealing system has the advantages of simple structural design and manufacture, high mounting and dismounting speed and convenience in grouting speed control, ensures the dimensional design precision of the shotcrete pipe and the slurry return branch pipe, and can effectively achieve the actual, rapid and effective grouting sealing effect.
3. The grouting sealing system can be applied to the start-up of the thermal engineering of the coke oven body, and when the temperature of a thermal oven reaches 800 ℃, the grouting sealing is carried out on the brick joints of the coal gas pipeline of the lower spray pipe of the coke oven; the method is also suitable for maintaining the pipe brick joint grouting seal of the lower spray pipe gas pipeline in the coke oven production, ensures that the lower spray pipe brick gas pipeline does not generate gas leakage, can be repeatedly used, ensures that the lower spray pipe brick gas pipeline achieves better sealing quality, and can obviously reduce the construction cost.
4. The grouting sealing method of the invention installs the grouting sealing system for the brick gas channels one by one to perform the grouting sealing operation of all the lower nozzle brick gas channels, can control the height of the slurry entering the brick gas channels by controlling the slurry amount, and prevent the slurry from overflowing the brick gas channels due to overhigh slurry pressing-in or from failing to achieve the sealing effect due to overlow slurry pressing-in.
Drawings
The invention will be described by way of specific embodiments and with reference to the accompanying drawings, in which
FIG. 1 is a schematic installation diagram of a grouting sealing system of a coke oven gas lower nozzle brick gas channel full slurry method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the grouting and sealing stage of the coke oven gas lower nozzle brick gas channel full slurry method according to the embodiment of the invention;
FIG. 3 is a schematic illustration of the installation of the brick gas channel of FIG. 1 in accordance with an exemplary embodiment of the present invention;
fig. 4 is a schematic view of the shotcrete tube of fig. 1 in accordance with an exemplary embodiment of the present invention.
Description of reference numerals: 1-brick gas channel; 11-lower nozzle cross; 12-gas cross pipe; 13-a pipe cap; 14-gas pipeline pipe bricks; 15-horizontal brick joints; 2-a guniting pipe; 21-quick sealing joint; 3-spraying a slurry tank; 31-a guniting hose; 32-guniting tank valve; 33-pressure gauge; 34-a relief valve; 4-pulping branch pipe; 41-a pulping valve; 42-a repulping rubber pipe; 5-slurry return tank; 6-an air compression system; 61-compressed air pipe; 62-compressed air rubber tube; 63-compressed air valve; 7-a coke oven hearth plate; 8-coke oven basement terrace; 9-slurry.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The embodiment is basically as shown in figure 1: the embodiment provides a full-slurry grouting sealing system for a coke oven gas lower nozzle brick gas channel, which can be applied to the start of thermal engineering of a coke oven body, and when the temperature of a thermal oven reaches 800 ℃, grouting sealing is carried out on the brick joints of the coke oven lower nozzle brick gas channel; the method is also suitable for maintaining the pipe brick joint grouting seal of the lower spray pipe gas pipeline in the coke oven production, and ensures that the gas leakage of the lower spray pipe brick gas pipeline is avoided; in the embodiment, for example, when the temperature of the hot-state oven reaches 800 ℃, grouting and sealing are performed on brick joints of a coke oven lower nozzle gas channel pipe, as shown in fig. 3, the method is particularly applied to grouting and sealing a plurality of brick gas channels 1 arranged on a bed plate 7 of the coke oven, each brick gas channel 1 comprises a plurality of layers of gas channel pipe bricks, and a lower nozzle four-way 11 is arranged at the lower end of each brick gas channel 1 and is used for connecting a gas transverse pipe 12 communicated with the coke oven; the grouting sealing system provided by the embodiment is arranged on a basement terrace 8 of a coke oven outside the coke oven, and specifically comprises a grouting pipe 2, a grouting tank 3, a slurry returning tank 5 and an air compression system 6 for providing pressure for the grouting tank 3, wherein the grouting pipe 2 is manufactured according to the inner diameter of a lower nozzle brick gas channel 1 of different oven types being phi 50-60mm and the height being 4500-5500mm, and the grouting tank 3 provided by the embodiment is made of phi 33mm steel pipes, and the length of the grouting tank is 1200 mm; the guniting pipe 2 is arranged at the lower end of the brick gas channel 1, the guniting pipe 2 extends upwards into the brick gas channel 1 and is connected with the lower spray pipe four-way joint 11 through a quick sealing joint 21 in a quick sealing mode, and the length of the guniting pipe extending upwards into the brick gas channel is 700-plus-1000 mm.
In this embodiment, an inner diameter of 360mm, a height of 600mm and a volume of 0.06m are designed3The cylindrical guniting tank 3 is used for being gradually adapted to the amount of the slurry used by the integral grouting sealing full slurry method of the plurality of brick gas pipelines 1, and a guniting rubber pipe 31 is arranged between the guniting tank 3 and the guniting pipe 2 and is used for communicating the guniting tank 3 with the guniting pipe 2; a guniting tank valve 32 is arranged at the joint of the guniting tank 3 and the guniting rubber pipe 31, and an air release valve 34 is arranged on the guniting tank 3 and is used for releasing pressure of a grouting sealing system in a pressure release and grout return stage; as a preferable scheme of this embodiment, the inner diameter of the guniting rubber tube 31 is designed to be the same as the inner diameter of the guniting tube 2, and the guniting rubber tube is made of a rubber tube with diameter of 33mm, so as to ensure the mud flow-through property in the grouting process and facilitate the control of the grouting speed, thereby achieving the actual, rapid and effective grouting sealing effect.
The air compression system 6 provided by the embodiment comprises an external air compressor and a compressed air pipe 61 connected with the external air compressor, a compressed air rubber pipe 62 is installed between the compressed air pipe 61 and the guniting tank 3, a compressed air valve 63 is arranged at the joint of the guniting tank 3 and the compressed air rubber pipe 62, in the grouting and sealing stage, the guniting tank valve 32 is opened, the compressed air valve 63 is slowly opened, the slurry in the guniting tank 3 is poured into the gas duct brick 1 by using the air compression system 6, the slurry amount in the guniting tank 3 is determined according to the diameter of the gas duct brick 1 and the grouting and sealing height, the compressed air valve is configured to enable the height of the slurry 9 poured into the gas duct brick 1 to be higher than the position 50mm upwards from the horizontal brick seam 15 of the top layer gas duct pipe brick 14 in the gas duct brick 1, so that the height of the slurry entering the gas duct brick 1 can be controlled by controlling the slurry amount, the slurry is prevented from overflowing out of the brick gas duct 1 due to too high slurry pressure, the design is ingenious and reasonable; of course, the manner of filling slurry by using the air compression system 6 is only a preferred embodiment of the present invention, and is not particularly limited thereto, and on this basis, a targeted adjustment may be made, for example, based on the technical principle of the existing grouting machine or grouting machine, so as to fill the determined amount of slurry into the coal gas duct 1, and the purpose of controlling the height of slurry entering the coal gas duct 1 by controlling the amount of slurry is achieved, and all of them are included in the protection scope of the present invention.
As a preferable scheme of this embodiment, a pressure gauge 33 is configured on the guniting tank 3 for measuring an actual pressure parameter value in the guniting tank 3, so that when grouting and sealing, the actual pressure parameter value of the compressed air in the guniting tank 3 can be determined by observing the pressure gauge 33 on the guniting tank 3.
Furthermore, in order to realize the backflow of the slurry, a slurry return branch pipe 4 is arranged on the slurry spraying pipe 2, the slurry return branch pipe 4 is positioned below the quick seal joint 21, and a slurry return rubber pipe 42 is arranged between the slurry return branch pipe 4 and the slurry return tank 5 and is used for communicating the slurry return branch pipe 4 with the slurry return tank 5; in the implementation, for example, the quick sealing joint 21 is arranged at the lower end of the guniting pipe 2 and is 500mm away from the bottom of the guniting pipe 2, and the slurry return branch pipe 4 is specifically arranged at the position, 350mm away from the bottom of the guniting pipe 2, of the lower end of the guniting pipe 2; in order to ensure the mud flow conductivity in the mud-returning process, the inner diameter of the mud-returning branch pipe 4 is preferably designed to be the same as that of the shotcrete pipe 2, and the mud-returning branch pipe and the shotcrete pipe are all made of steel pipes with the diameter of 33 mm;
as shown in fig. 4, the shotcrete pipe 2 is vertical setting, and the branch pipe 4 that returns thick liquid is followed the 2 laterolog of shotcrete pipe sets up, and its slope acute angle is about 45, offer in the lateral direction of shotcrete pipe 2 with the intercommunicating pore of 4 internal diameter assorted in the branch pipe that returns thick liquid to make the branch pipe 4 that returns thick liquid correspond the intercommunicating pore and with the welding of shotcrete pipe 2 together, be used for guaranteeing shotcrete pipe 2 and the branch pipe 4 stability of being connected of returning thick liquid, above-mentioned shotcrete pipe 2 can be prefabricated in advance, guarantee the size design precision of shotcrete pipe 2 and branch pipe 4 that returns thick liquid, dismantle installation operating speed piece, can.
On the other hand, fig. 2 shows a schematic diagram of a grouting and sealing stage of a coke oven gas lower nozzle brick gas duct 1 by a full grouting method according to an embodiment of the present invention, and according to the present invention, a grouting and sealing method of a coke oven gas lower nozzle brick gas duct 1 by a full grouting method is further provided in this embodiment, and the sealing is performed by using the grouting and sealing system of the coke oven gas lower nozzle brick gas duct 1 by a full grouting method, which specifically includes the following steps:
s1, preparation stage: selecting a coke oven basement terrace 8 site outside a coke oven, pressing down the diameter of the nozzle brick gas channel and the grouting sealing height to manufacture a test steel pipe, installing the test steel pipe according to the height position of the nozzle brick gas channel under the coke oven gas, wherein the test steel pipe is used for simulating the brick gas channel 1, and then installing a grouting sealing system; specifically, installing a grout seal system comprises the following steps:
firstly, manufacturing a grout spraying pipe 2 with the diameter of 33mm according to the diameter of a brick gas channel 1 and the grouting sealing height, and designing a grout returning branch pipe 4 with the diameter of 33m and a grout returning valve 41 on the grout spraying pipe 2;
step two, the pipe cap 13 and the pipe plug at the lower spray pipe four-way 11 part of the brick gas channel 1 are detached, and a special rubber pad and cotton yarn are used for blocking the small hole plate part at one side of the lower spray pipe four-way 11, which is close to the coal gas transverse pipe 12, so that slurry is prevented from being poured into the coal gas transverse pipe 12;
thirdly, mounting a guniting pipe 2 at the bottom of the lower nozzle four-way joint 11, and sealing by using a quick sealing joint 21;
fourthly, communicating the guniting pipe 2 with the guniting tank 3 by using a guniting rubber pipe 31, communicating the grout returning branch pipe 4 with the grout returning tank 5 by using a grout returning rubber pipe 42, and installing an air compression system 6 at one side of the guniting tank 3 to complete the installation of a grouting sealing system;
s2, parameter determining stage: determining the amount of mud filled into a grout spraying tank 3 according to the diameter of the brick gas channel 1 and the grouting sealing height, determining the pressure value of grouting compressed air, and determining grouting sealing time;
s3, grouting and sealing: when the oven drying temperature of the coke oven reaches 800 ℃, grouting and sealing operation of the lower nozzle brick gas duct 1 is carried out according to the experimental parameters determined in the step S2, a guniting tank valve 32 is opened, a compressed air valve 63 is slowly opened, all determined guniting tank 3 slurry in the guniting tank 3 is poured into the brick gas duct 1, so that the height of the slurry 9 poured into the brick gas duct 1 is 50mm higher than the position of a horizontal brick joint 15 of a top layer gas duct pipe brick 14 in the brick gas duct 1, the slurry stays for 2 seconds after the grouting and sealing height is reached, and the grouting and sealing operation is finished;
s4, pressure relief and pulp return stage: closing the compressed air valve 63, opening the air release valve 34 on the air injection tank, and opening the slurry return valve 41 on the slurry return branch pipe 4 to enable the slurry in the brick gas pipeline 1 to flow back into the slurry return tank 5 until the slurry return is completed;
s5, cleaning: the guniting pipe 2 and the quick sealing joint 21 are disassembled, and round steel with the diameter of 14mm is utilized to dredge the brick gas channel 1, so that the smoothness of the brick gas channel 1 is ensured; then the special rubber pad and cotton yarn at the small hole plate are removed, the lower spray pipe four-way joint 11 is cleaned, and a pipe cap 13 and a pipe plug are installed after the cleaning is finished;
and S6, discharging all the residual slurry in the guniting tank 3, loading the residual slurry into the guniting tank 3 of the grouting sealing system according to the determined slurry amount of the next brick gas duct 1, repeating the steps S1-S5, and performing grouting sealing operation on all the lower nozzle brick gas ducts 1 row by row one by one.
It should be noted that in the grouting and sealing stage in step S3, according to the determined slurry amount parameter in step S2, only the actual slurry amount for grouting and sealing the current lower nozzle gas pipeline pipe brick is loaded into the guniting tank 3, that is, only the current brick gas pipeline 1 is grouted and sealed by one grouting operation of the guniting tank 3, so that the full-height full-slurry method grouting and sealing is achieved by controlling the slurry amount.
In summary, the full-slurry grouting sealing method is characterized in that a full-height full-slurry grouting test is carried out outside a coke oven by controlling the slurry amount, various grouting sealing operation test parameters are determined, full-height full-slurry grouting sealing of the tubular bricks of the lower nozzle gas duct of the whole oven is carried out according to the determined grouting sealing operation actual parameters, a grouting sealing system is installed one by one for the tubular bricks of the lower nozzle gas duct 1 to carry out grouting sealing operation on all the lower nozzle gas ducts 1, the height of slurry entering the tubular bricks of the gas duct 1 can be controlled by controlling the slurry amount, the phenomenon that the slurry is pressed into the tubular bricks of the gas duct 1 too high and overflows or the slurry is pressed into the tubular bricks of the gas duct 1 too low and cannot achieve the sealing effect is prevented, and the grouting sealing; and the operation process is simple, the speed block is disassembled and assembled, the grouting sealing efficiency can be effectively improved, simultaneously, the mud slurry after primary grouting sealing can flow back to the slurry return tank, the cyclic utilization is realized, the mud can be prevented from blocking the brick gas channel 1, the utilization rate of the mud slurry can be effectively improved, and the method has great popularization and use values.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The lower spray pipe brick gas channel full slurry grouting sealing system for the coke oven gas comprises a plurality of layers of gas channel pipe bricks, a lower spray pipe four-way is arranged at the lower end of the brick gas channel and used for connecting a gas transverse pipe communicated with a coke oven, and the lower spray pipe brick gas channel full slurry grouting sealing system is characterized in that: the grouting sealing system comprises
The guniting pipe is arranged at the lower end of the brick gas channel, extends upwards into the brick gas channel and is connected with the lower spray pipe four-way in a sealing way through a quick sealing joint;
the guniting rubber pipe is arranged between the guniting tank and the guniting pipe and is used for communicating the guniting tank with the guniting pipe; a guniting tank valve is arranged at the joint of the guniting tank and the guniting rubber pipe, and an air release valve is arranged on the guniting tank; the grout returning branch pipe is arranged on the grout spraying pipe and is positioned below the quick sealing joint, and a grout returning valve is arranged on the grout returning branch pipe;
a pulp return rubber pipe is arranged between the pulp return branch pipe and the pulp return tank and is used for communicating the pulp return branch pipe with the pulp return tank; and the air compression system is used for providing pressure for the guniting tank so as to fill the slurry in the guniting tank into the brick gas channel, and the amount of the slurry in the guniting tank is configured so that the height of the slurry filled into the brick gas channel is higher than the position 50mm above the horizontal brick joint of the top layer gas channel pipe brick in the brick gas channel.
2. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 1, characterized in that: the air compression system comprises an external air compressor and a compressed air pipe connected with the external air compressor, the compressed air pipe is provided with a compressed air rubber pipe between the guniting tanks, and a compressed air valve is arranged at the joint of the guniting tanks and the compressed air rubber pipe.
3. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 2, characterized in that: and the guniting tank is provided with a pressure gauge for measuring the actual pressure parameter value in the guniting tank.
4. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 1, characterized in that: the guniting pipe is vertically arranged, and the grout returning branch pipe is obliquely arranged along the lateral direction of the guniting pipe.
5. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 4, characterized in that: and a communication hole matched with the inner diameter of the slurry return branch pipe is formed in the lateral direction of the slurry spraying pipe, so that the slurry return branch pipe corresponds to the communication hole and is welded with the slurry spraying pipe.
6. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 5, characterized in that: the inner diameter of the slurry return branch pipe is the same as that of the slurry spraying pipe; the inner diameter of the slurry return rubber pipe is the same as that of the slurry spraying pipe.
7. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing system according to claim 1, characterized in that: the inner diameter of the guniting rubber pipe is the same as that of the guniting pipe.
8. A method for grouting and sealing a coke oven gas lower nozzle brick gas channel by a full slurry method is characterized by comprising the following steps: the coke oven gas lower nozzle brick gas channel full slurry grouting sealing system of any one of claims 1 to 7 is applied for sealing, and comprises the following steps:
s1, preparation stage: selecting a field outside the coke oven, pressing the diameter of the nozzle brick gas channel and the grouting sealing height to manufacture a test steel pipe, mounting the test steel pipe according to the height position of the nozzle brick gas channel under the coke oven gas, wherein the test steel pipe is used for simulating the brick gas channel, and then mounting the grouting sealing system;
s2, parameter determining stage: determining the amount of mud filled into a grout spraying tank according to the diameter of a brick gas channel and the grouting sealing height, determining the pressure value of grouting compressed air, and determining grouting sealing time;
s3, grouting and sealing: when the oven drying temperature of the coke oven reaches 800 ℃, grouting and sealing the lower nozzle brick gas duct according to the experimental parameters determined in the step S2, opening a valve of a guniting tank, slowly opening a compressed air valve, and completely filling the guniting tank slurry determined in the guniting tank into the brick gas duct so that the height of the slurry filled into the brick gas duct is 50mm higher than the position of a horizontal brick joint of a top layer gas duct pipe brick in the brick gas duct, and staying for a certain time to achieve grouting and sealing time, thereby completing grouting and sealing operation;
s4, pressure relief and pulp return stage: closing a compressed air valve, opening a gas release valve on the gas injection tank, opening a slurry return valve on a slurry return branch pipe to enable slurry in the brick gas pipeline to flow back into the slurry return tank, and detaching a slurry spraying pipe after slurry return is finished;
s5, cleaning: the guniting pipe and the quick sealing joint are disassembled to dredge the brick gas channel, so that the smoothness of the brick gas channel is ensured;
and S6, discharging all the residual slurry in the guniting tank, loading the residual slurry into the guniting tank of the grouting sealing system according to the determined slurry amount of the next brick gas channel, repeating the steps S1-S5, and performing grouting sealing operation on all the lower nozzle brick gas channels one by one.
9. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing method according to claim 8, characterized in that: in the grouting and sealing stage of step S3, according to the determined slurry amount parameters of step S2, only the actual slurry amount for grouting and sealing the current lower nozzle gas pipeline pipe brick is loaded into the slurry tank, i.e., one slurry-spraying and filling operation is performed, and only the current brick gas pipeline is grouted and sealed, so that the full-height full-slurry method grouting and sealing can be achieved by controlling the slurry amount.
10. The coke oven gas lower nozzle brick gas channel full slurry grouting sealing method according to claim 8, characterized in that: step S1 installing the grout seal system includes the steps of:
step one, manufacturing a guniting pipe according to the diameter of a brick gas channel and the grouting sealing height;
step two, removing a pipe cap and a pipe plug at the four-way part of the lower spray pipe of the brick gas channel and plugging the small hole plate part at one side of the four-way part of the lower spray pipe, which is close to the transverse pipe of the gas, by using a rubber pad and cotton yarn;
thirdly, mounting a guniting pipe at the bottom of the four-way lower nozzle, and sealing by using a quick sealing joint;
and fourthly, communicating the guniting pipe with the guniting tank by using a guniting rubber pipe, communicating the grout returning branch pipe with the grout returning tank by using a grout returning rubber pipe, and installing an air compression system on one side of the guniting tank to complete the installation of the grouting sealing system.
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| CN111718731A (en) * | 2020-07-07 | 2020-09-29 | 新疆八一钢铁股份有限公司 | Vertical flue guniting method for coke oven combustion chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111718731A (en) * | 2020-07-07 | 2020-09-29 | 新疆八一钢铁股份有限公司 | Vertical flue guniting method for coke oven combustion chamber |
| CN111718731B (en) * | 2020-07-07 | 2021-07-06 | 新疆八钢南疆钢铁拜城有限公司 | Vertical flue guniting method for coke oven combustion chamber |
| CN115197723A (en) * | 2022-07-29 | 2022-10-18 | 天津铁厂有限公司 | Method for treating blowby of coke oven brick gas duct |
| CN115197722A (en) * | 2022-07-29 | 2022-10-18 | 天津铁厂有限公司 | Feeding mechanism for sealing coke oven carbonization chamber and sealing method |
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