CN113088302B - Coke oven bridge pipe on-line coke cleaning and preventing method and device - Google Patents
Coke oven bridge pipe on-line coke cleaning and preventing method and device Download PDFInfo
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- CN113088302B CN113088302B CN202110431035.0A CN202110431035A CN113088302B CN 113088302 B CN113088302 B CN 113088302B CN 202110431035 A CN202110431035 A CN 202110431035A CN 113088302 B CN113088302 B CN 113088302B
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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
- C10B43/00—Preventing or removing incrustations
- C10B43/02—Removing incrustations
- C10B43/08—Removing incrustations with liquids
Abstract
The invention relates to an on-line coke cleaning and preventing method for a coke oven bridge tube, which is characterized in that spraying and sweeping ammonia water is linearly injected into a cavity of a bridge tube body in an oblique tangential direction to form a liquid and/or gas film with rapid rotational flow along the inner wall of the bridge tube body, and the film prevents condensed coke adhesion on the inner wall of the bridge tube body in the crude gas cooling process, so that thick liquid coal tar and ash powder in the crude gas formed by cooling and condensing the crude gas are carried into a gas collecting tube along with the rotational flow of the liquid and/or gas film. The invention also relates to an online coke cleaning and preventing device for the coke oven bridge pipe. The invention has the following beneficial effects: the membrane prevents the crude gas from condensing, coking and adhering to the inner wall of the bridge pipe body in the cooling process, so that the coal tar can be cleaned and prevented from condensing and coking, and the waste of the coal tar is avoided; the invention reduces the labor intensity and the safety risk of operators, eliminates the occupational injury of coke oven operators and the equipment damage caused by rough coke cleaning, and particularly improves the production and operation efficiency of the coke oven, reduces the maintenance cost and increases the coke oven income.
Description
Technical Field
The invention relates to an on-line coke cleaning and preventing method and device for a coke oven bridge pipe, belonging to the technical field of coke ovens.
Background
In the coking process, coking coal is heated and carbonized by isolated air in a coke oven to generate a large amount of crude gas, the coke oven is generally formed by arranging a plurality of carbonization chambers (hearths) in parallel, each hearth is generally provided with one or two ascending pipes so as to discharge the crude gas out of the hearth, the temperature of the crude gas is high (generally reaching 850 ℃), the heat brought out by the crude gas in the expenditure heat of the coke oven is about 36 percent, and the coke oven has extremely high recycling value.
In the traditional process, the crude gas is generally sent to a bridge pipe through a riser, the crude gas is rapidly cooled after ammonia water is injected and sprayed into the bridge pipe to transfer heat through mass transfer, so that coal tar and gas are obtained, and then the gas is sent to a gas collecting pipe and sent out of the device. Coal tar in the raw gas can be condensed out after passing through 450 ℃, the coal tar is sticky and is combined with ash in the raw gas, the coal tar is rapidly cooled to generate condensation coking along the inner wall of a bridge pipe, the coking is manually decoked through a vertical decoking observation hole and an axial decoking observation hole, the difficulty is very high, sometimes, a hammer is needed for decoking, the time is slightly prolonged, and a steel chisel can be destroyed and broken, so that the waste of the coal tar is caused, the yield of the coal tar is reduced, the labor intensity and the dangerous hazard risk are brought to operators, the equipment damage is caused, especially, the production turnover rate of the coke oven is reduced, and the coke oven yield is influenced.
The on-line coke cleaning and preventing method and the device for the coke oven bridge pipe are needed to solve the problems that the coke of the existing coke oven ascending pipe bridge pipe is difficult to clean and the like.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, an on-line coke cleaning and preventing method and device for a coke oven bridge pipe are provided.
The invention relates to an online coke cleaning and preventing method for a coke oven bridge tube, which is characterized in that spraying and sweeping ammonia water is linearly injected into a cavity of a bridge tube body in an oblique tangential direction, the tangential direction and the flow direction of crude gas form a certain inclination angle of 0-45 degrees, the flow direction of the ammonia water forms spiral flow, the spraying and sweeping ammonia water has certain pressure, and a liquid and/or gas film with rapid rotational flow is formed along the inner wall of the bridge tube body, so that the liquid and/or gas film with rapid rotational flow has certain rigidity, and the film prevents condensed coking and adhesion on the inner wall of the bridge tube body in the cooling process of the crude gas, and thick liquid coal tar and ash powder in the crude gas which are formed by cooling and condensing the crude gas are brought into a gas collecting tube along with the rotational flow of the liquid and/or gas film.
Preferably, the bridge pipe body is provided with tangential ammonia injection holes communicated with the inner cavity of the bridge pipe to inject the sprayed ammonia water into the cavity of the bridge pipe body, a plurality of the tangential ammonia injection holes are formed in the bridge pipe body along an oblique tangential direction, and the sum of the oblique lengths of the plurality of the ammonia injection holes is greater than or equal to the axial arc length of the inner surface of the bridge pipe body; and the circumferential directions of two adjacent circumferential hole seams are mutually circumferentially staggered.
The oblique injection is in the oblique raw coke oven gas outflow direction.
The coke oven bridge pipe on-line coke cleaning and preventing device comprises a bridge pipe tee joint, wherein the bridge pipe tee joint comprises an ascending pipe and a bridge pipe which are communicated with each other, the bridge pipe comprises a bridge pipe body, and the bridge pipe body is provided with a vertical coke cleaning observation hole, a cooling ammonia injection hole and a transverse coke cleaning observation hole which penetrate through the bridge pipe body, and the coke oven bridge pipe on-line coke cleaning and preventing device is characterized in that: the bridge pipe body is provided with tangential ammonia injection hole seams communicated with the inner cavity of the bridge pipe so as to inject spraying and sweeping ammonia water into the cavity of the bridge pipe body, the tangential ammonia injection hole seams are arranged on the bridge pipe body along the oblique tangential direction, the spraying and sweeping ammonia water is linearly injected into the cavity of the bridge pipe body along the oblique tangential direction, the flowing direction of the ammonia water forms spiral flow, liquid or gas films of rapid rotational flow are formed on the inner wall of the bridge pipe body, and the films prevent crude gas from condensing and adhering to coking on the inner wall of the bridge pipe body in the cooling process.
Injecting ammonia water into the inner wall of the bridge pipe of the ascending pipe of the coking coke oven in a tangential injection manner, so that ammonia water fluid flows along the circumferential direction of the inner wall of the bridge pipe to form a liquid (gas) film, and the ammonia water flowing along the inner wall of the bridge pipe can effectively remove and prevent coal tar, which is condensed from crude gas tar at low temperature, from adhering to the inner wall of the bridge pipe, so that the coal tar can be prevented from being condensed and coked. The invention solves the problem that coke formation of the bridge pipe of the ascending pipe of the coke oven is difficult to remove.
Preferably, the oblique injection is in an oblique raw gas outflow direction, and the tangential ammonia injection pore is a fine pore which is axially inclined to the raw gas flowing direction and has a certain length; the ammonia injection hole seam in the tangential direction forms a certain inclination angle with the direction of crude gas flowing through the bridge pipe body, and the inclination angle is 0-45 degrees; the sum of the lengths of the inclined ammonia injection holes is greater than or equal to the length of an axial arc line on the inner surface of the bridge pipe body; and the circumferential directions of two adjacent annular hole seams are staggered annularly from each other.
Preferably, the plurality of tangential ammonia injection holes are spaced at intervals along the circumferential direction of the bridge pipe to form a tangential ammonia injection hole group, two adjacent ammonia injection hole groups are staggered in the circumferential direction, and the two adjacent ammonia injection hole groups are crossed in the circumferential direction.
Preferably, at least two groups of tangential ammonia injection hole seam groups are arranged at intervals along the length direction of the bridge pipe.
Preferably, the sparging ammonia is replaced by a coal tar light oil component.
Preferably, the device further comprises a purging ammonia water supply assembly.
Preferably, sweep ammonia water supply assembly and establish the cover aqueous ammonia chamber outer wall that presss from both sides in the bridge pipe body outside including the cover, form sealed cover aqueous ammonia chamber that presss from both sides between bridge pipe body and the cover aqueous ammonia chamber outer wall that presss from both sides, tangential notes ammonia crack one side is linked together with pressing from both sides cover aqueous ammonia chamber, and the opposite side is linked together with the inner chamber of bridge pipe body, be provided with the aqueous ammonia interface that is linked together with pressing from both sides cover aqueous ammonia chamber on the outer wall of cover aqueous ammonia chamber outer wall.
Preferably, the purging ammonia water supply assembly comprises an ammonia water combining pipe and an outer connecting pipe of a pore gap, the tangential ammonia injection pore gap is connected to the ammonia water combining pipe through the outer connecting pipe of the pore gap, the ammonia water combining pipes are collected in a header pipe, and the header pipe is communicated with the ammonia water interface.
Preferably, the tangential ammonia injection hole seams on the outer wall of the bridge pipe body are divided into two types according to the injection direction, namely a tangential ammonia injection hole seam A and a tangential ammonia injection hole seam B, the tangential ammonia injection hole seam A and the tangential ammonia injection hole seam B are symmetrically distributed relative to the symmetric plane of the bridge pipe body, the flow direction of the ammonia water injected through the tangential ammonia injection hole seam A is changed into clockwise spiral flow, and the flow direction of the ammonia water injected through the tangential ammonia injection hole seam B is changed into counterclockwise spiral flow.
Compared with the prior art, the invention has the following beneficial effects:
according to the on-line coke cleaning and preventing method and the device for the coke oven bridge tube, the sprayed and swept ammonia water is linearly injected into the cavity of the bridge tube body in the oblique tangential direction, the flowing direction of the ammonia water forms spiral flow, and a liquid and/or gas film with rapid rotational flow is formed on the inner wall of the bridge tube body, so that thick liquid coal tar formed by cooling and condensing crude gas and ash powder in the crude gas are brought into the gas collecting tube along with the rotational flow of the liquid and/or gas film, and the film prevents the condensation and adhesion coking on the inner wall of the bridge tube body in the cooling process of the crude gas, so that the condensation coking of the coal tar can be cleaned and prevented, and the waste of the coal tar is avoided;
by the on-line coke cleaning and preventing method and the device for the bridge pipe of the coke oven, the yield of coal tar is improved;
by the on-line coke cleaning and preventing method and the device for the coke oven bridge pipe, the large labor intensity and dangerous hazard risk of operators are eliminated, and the occupational injury of the coke oven operators is eliminated;
the online coke cleaning and preventing method and the online coke cleaning and preventing device for the coke oven bridge tube eliminate equipment damage caused by rough coke cleaning, particularly improve the production and operation efficiency of the coke oven, reduce the maintenance cost and increase the coke oven income.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a structural diagram of a first embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 2 is a sectional view of a first embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 3 is a structural diagram of a second embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 4 is a sectional view of a second embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 5 is a structural diagram of a third embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 6 is a sectional view of a third embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
FIG. 7 is a sectional view of a fourth embodiment of an on-line coke cleaning and preventing device for a bridge pipe of a coke oven;
in the figure: 1. bridge pipe tee bend 2, bridge pipe body 3, vertical coke cleaning observation hole 4, cooling notes ammonia hole 5, tangential notes ammonia aperture 6, horizontal coke cleaning observation hole 7, jacket aqueous ammonia chamber 8, jacket aqueous ammonia chamber outer wall 9, aqueous ammonia interface 10, aqueous ammonia combination pipe 11, aperture outer joint pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following examples, which are not intended to be limiting, and any modifications, equivalents, improvements, etc. which are within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Example one
The invention relates to an online coke cleaning and preventing method for a coke oven bridge tube, wherein spraying and sweeping ammonia water is linearly injected into a cavity of a bridge tube body 2 in an oblique tangential direction, the tangential direction and the flow direction of crude gas form a certain inclination angle of 0-45 degrees, the flow direction of the ammonia water is formed into spiral flow, the spraying and sweeping ammonia water has certain pressure, and a liquid and/or gas film with rapid rotational flow is formed along the inner wall of the bridge tube body 2, so that the liquid and/or gas film with rapid rotational flow has certain rigidity, the film prevents the condensation and coking adhesion on the inner wall of the bridge tube body 2 in the cooling process of the crude gas, and thick liquid coal tar and ash powder in the crude gas which are formed by the cooling and condensation of the crude gas are carried into a gas collecting tube along with the rotational flow of the liquid and/or gas film; a plurality of tangential ammonia injection holes 5 are formed in the bridge pipe body 2 along an oblique tangential direction, and the sum of the oblique lengths of the plurality of ammonia injection holes is greater than or equal to the axial arc length of the inner surface of the bridge pipe body; a plurality of annular adjacent hole seams are circumferentially staggered in the circumferential direction; the oblique injection is in the oblique raw coke oven gas outflow direction.
The ammonia water is injected into the cooling position of the bridge pipe of the coke oven in a linear shape along the oblique tangential direction, the ammonia water is injected in a linear shape along the oblique tangential direction to form a certain width, the ammonia water forms rotational flow along the inner wall of the bridge pipe, a liquid (gas) film is formed along the inner wall of the bridge pipe, the sum of the oblique lengths of a plurality of ammonia injection holes is greater than or equal to the axial arc length of the inner surface of the tube body of the bridge pipe, and the ammonia water is injected along the axial direction of the bridge pipe at a plurality of positions to ensure that the film of the ammonia water (gas) is fully distributed along the axial direction of the bridge pipe without gaps.
The linear aqueous ammonia that injects into of slant tangential direction also can be replaced by the horn mouth formula and spout into the aqueous ammonia, and is a plurality of annotate the oblique length sum of ammonia aperture seam can be less than bridge pipe body internal surface axial arc length, but the horn mouth makes the aqueous ammonia liquid (gas) membrane that the aqueous ammonia formed of sweeping and spraying produce and disperse, though can realize making aqueous ammonia liquid (gas) membrane along bridge pipe axial and be covered with, but through experimental verification, its result of use is relatively poor, non-optimal scheme.
Experiments prove that ammonia water is linearly injected in an oblique tangential direction, the sum of the oblique lengths of a plurality of ammonia injection holes is larger than or equal to the axial arc length of the inner surface of the bridge pipe body, the optimal scheme is that the ammonia water is injected along a plurality of tangential lines in the axial direction of the bridge pipe, so that an ammonia water liquid (gas) film is distributed on the inner wall of the bridge pipe along the axial direction of the bridge pipe, and the injected ammonia water rotates along the pipe wall of the bridge pipe in the bridge pipe to form a liquid (gas) film which is fully covered along the inner wall of the bridge pipe and has a rapid rotational flow, the rapid rotational flow liquid (gas) film prevents coking, check and adhesion in the crude gas cooling process, and thick liquid coal tar and ash powder in the crude gas which are formed by crude gas cooling and condensing are carried into a gas collecting pipe along the rotational flow of the liquid (gas) film; the ammonia water injection hole seam axis is injected obliquely, and the ammonia water injection hole seam axis is in an oblique raw coke oven gas outflow direction, so that an ammonia water liquid (gas) film can automatically flow to the direction of a gas collecting pipe in which the raw coke oven gas flows, and backflow and reverse splashing are avoided.
The spraying and sweeping ammonia water is replaced by the coal tar light oil component, and the coal tar light oil component and the crude gas heavy component have similar compatibility, so that coal tar coagulation can be eliminated in a substantial manner.
As shown in fig. 1 and 2, the coke oven bridge pipe online cleaning and preventing device comprises a bridge pipe tee 1, wherein the bridge pipe tee 1 comprises an ascending pipe and a bridge pipe which are communicated with each other, the bridge pipe comprises a bridge pipe body 2, the bridge pipe body 2 is provided with a vertical coke cleaning observation hole 3, a cooling ammonia injection hole 4 and a transverse coke cleaning observation hole 6 which penetrate through the bridge pipe body 2, the bridge pipe body 2 is provided with a tangential ammonia injection hole seam 5 communicated with an inner cavity of the bridge pipe to inject a spraying and sweeping ammonia water into a cavity of the bridge pipe body 2, the tangential ammonia injection hole seams 5 are arranged on the bridge pipe body 2 along an oblique tangential direction, the spraying and sweeping ammonia water is linearly injected into the cavity of the bridge pipe body 2 along the oblique tangential direction, the flowing direction of the ammonia water forms spiral flow, a liquid and/or gas film which can rapidly swirl is formed on the inner wall of the bridge pipe body 2, and the film prevents the coagulation and adhesion coking on the inner wall of the bridge pipe body 2 in the crude gas cooling process.
In the embodiment, the oblique injection is in the oblique raw gas flowing direction, and the tangential ammonia injection pore gap 5 is a thin pore gap which is axially inclined to the raw gas flowing direction and has a certain length; the ammonia injection hole seam in the tangential direction and the crude gas flowing through the bridge pipe body form a certain inclination angle, and the inclination angle is 0-45 degrees; the sum of the lengths of the plurality of ammonia injection holes is greater than or equal to the length of an axial arc line on the inner surface of the bridge pipe body; the circumferential directions of the two adjacent circumferential hole seams are mutually circumferentially staggered; the number of the tangential ammonia injection holes 5 is more than or equal to 2; the plurality of tangential ammonia injection hole seams 5 form a tangential ammonia injection hole seam group at certain intervals along the circumferential direction of the bridge pipe, two adjacent ammonia injection hole seam groups are staggered in the circumferential direction, and the two adjacent ammonia injection hole seam groups are crossed in the circumferential direction; at least two groups of tangential ammonia injection hole seam groups are arranged at certain intervals along the length direction of the bridge pipe; the device also comprises a purging ammonia water supply assembly; the purging ammonia water supply assembly comprises a jacket ammonia water cavity outer wall 8 sleeved on the outer side of the bridge pipe body 2, a sealed jacket ammonia water cavity 7 is formed between the bridge pipe body 2 and the jacket ammonia water cavity outer wall 8, one side of the tangential ammonia injection hole seam 5 is communicated with the jacket ammonia water cavity 7, the other side of the tangential ammonia injection hole seam is communicated with an inner cavity of the bridge pipe body 2, and an ammonia water interface 9 communicated with the jacket ammonia water cavity 7 is arranged on the outer wall of the jacket ammonia water cavity outer wall 8.
Example two
As shown in fig. 3 and fig. 4, the difference from the first embodiment is that the purging ammonia water supply assembly includes an ammonia water combining pipe 10 and a pore seam outer connecting pipe 11, the tangential ammonia injection pore seam 5 is connected to the ammonia water combining pipe 10 through the pore seam outer connecting pipe 11, in order to solve the problem of narrow space of the bent-in bridge pipe, a plurality of ammonia water combining pipes 10 are collected in a header pipe, and the header pipe is communicated with the ammonia water interface 9. The problem of the technological transformation or the processing difficulty of jacket structure sometimes is solved.
EXAMPLE III
As shown in fig. 5 and fig. 6, the difference from the second embodiment is that the tangential ammonia injection hole seams 5 on the outer wall of the bridge pipe body 2 are divided into two types according to the injection direction, namely a tangential ammonia injection hole seam a and a tangential ammonia injection hole seam B, the tangential ammonia injection hole seams a and the tangential ammonia injection hole seams B are symmetrically distributed relative to the symmetry plane of the bridge pipe body 2, the flow direction of the ammonia water injected through the tangential ammonia injection hole seams a is changed into a clockwise spiral flow, and the flow direction of the ammonia water injected through the tangential ammonia injection hole seams B is changed into a counterclockwise spiral flow.
The position of a plurality of tangential ammonia injection hole seams 5 begins from the top of the bridge pipe body 2, the characteristic of the tangential ammonia injection hole seam 5 at the top is two-way tangential, the tangential ammonia injection hole seam 5 can be arranged in a plurality of half circles in the circumferential direction, a plurality of combination pipes 10 can be in a plurality of half circles, the two side tangential ammonia injection hole seams 5 with symmetrical vertical axes are also symmetrical according to the vertical axes, thus the construction difficulty of the bent part in the bridge pipe can be solved, and the bottleneck of narrow space at the position can be eliminated.
Example four
As shown in fig. 7, the difference from the third embodiment lies in that the positions of the plurality of tangential ammonia injection holes 5 start from the bottom of the bridge pipe body 2, the tangential ammonia injection holes 5 at the bottom are characterized by bidirectional tangency, the tangential ammonia injection holes 5 can be arranged in a plurality of half circles in the circumferential direction, the lengths of the plurality of combination pipes 10 can be a plurality of half circles, and the tangential ammonia injection holes 5 at two sides, the vertical axes of which are symmetrical, are also symmetrical according to the vertical axes, so that the construction difficulty at the inner bend of the bridge pipe can be solved, and the bottleneck of narrow space at the inner bend of the bridge pipe can be eliminated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a coke oven bridge pipe is clear coke preventing device on line, includes the bridge pipe tee bend, the bridge pipe tee bend is including tedge and bridge pipe that communicate each other, the bridge pipe includes the bridge pipe body, have the vertical coke cleaning observation hole, the cooling of running through the bridge pipe body on the bridge pipe body and annotate ammonia hole and horizontal coke cleaning observation hole, its characterized in that: the bridge pipe body is provided with tangential ammonia injection hole seams communicated with the inner cavity of the bridge pipe so as to inject spraying and sweeping ammonia water into the cavity of the bridge pipe body, the plurality of tangential ammonia injection hole seams are arranged on the bridge pipe body along the oblique tangential direction, the spraying and sweeping ammonia water is linearly injected into the cavity of the bridge pipe body along the oblique tangential direction, the flowing direction of the ammonia water forms spiral flow, liquid and/or gas films with rapid rotational flow are formed on the inner wall of the bridge pipe body, and the films prevent the coagulation and coking adhesion on the inner wall of the bridge pipe body in the crude gas cooling process;
the on-line coke cleaning and preventing method for the coke oven bridge pipe comprises the steps that spraying and sweeping ammonia water is linearly injected into a cavity of a bridge pipe body in an oblique tangential direction, the tangential direction and the flowing direction of crude gas form a certain inclination angle, the flowing direction of the ammonia water forms spiral flow, the spraying and sweeping ammonia water has certain pressure, a liquid and/or gas film which can rapidly swirl is formed along the inner wall of the bridge pipe body, the liquid and/or gas film which can rapidly swirl has certain rigidity, the film prevents crude gas from being condensed and coked and attached on the inner wall of the bridge pipe body in the cooling process, thick liquid coal tar and ash powder in the crude gas which are formed by crude gas through cooling and condensation are brought into a gas collecting pipe along with the swirling flow of the liquid and/or gas film, tangential ammonia injection holes communicated with the cavity of the bridge pipe are formed in the bridge pipe body to inject the spraying and sweeping ammonia water into the cavity of the bridge pipe body, a plurality of the tangential ammonia injection holes are formed in the oblique tangential direction on the bridge pipe body, and the sum of the lengths of the oblique ammonia injection holes is larger than or equal to the axial length arc line of the inner surface of the bridge pipe body; and the circumferential directions of two adjacent circular hole seams are mutually circumferentially staggered, and the spraying and sweeping ammonia water is replaced by the coal tar light oil component.
2. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 1, which is characterized in that: the tangential ammonia injection pore is a thin pore which is axially inclined to the flow direction of the raw coke oven gas and has a certain length; the ammonia injection hole seam in the tangential direction and the crude gas flowing through the bridge pipe body form a certain inclination angle, and the inclination angle is 0-45 degrees; the sum of the lengths of the inclined ammonia injection holes is greater than or equal to the length of an axial arc line on the inner surface of the bridge pipe body; the circumferential directions of the two adjacent circumferential hole seams are mutually circumferentially staggered; the number of the tangential ammonia injection holes is more than or equal to 2.
3. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 2, which is characterized in that: the plurality of tangential ammonia injection pore gaps form a tangential ammonia injection pore gap group at certain intervals along the circumferential direction of the bridge pipe; at least two groups of tangential ammonia injection hole seam groups are arranged at certain intervals along the length direction of the bridge pipe, two adjacent ammonia injection hole seam groups are staggered in the circumferential direction, and the two adjacent ammonia injection hole seam groups are crossed in the circumferential direction.
4. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 3, which is characterized in that: the ammonia water purging and supplying device further comprises a purging ammonia water supplying assembly.
5. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 4, which is characterized in that: the purging ammonia water supply assembly comprises a jacket ammonia water cavity outer wall sleeved on the outer side of a bridge pipe body, a sealed jacket ammonia water cavity is formed between the bridge pipe body and the jacket ammonia water cavity outer wall, one side of the tangential ammonia injection hole seam is communicated with the jacket ammonia water cavity, the other side of the tangential ammonia injection hole seam is communicated with an inner cavity of the bridge pipe body, and an ammonia water interface communicated with the jacket ammonia water cavity is arranged on the outer wall of the jacket ammonia water cavity outer wall.
6. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 5, which is characterized in that: the purging ammonia water supply assembly comprises an ammonia water combining pipe and a pore seam outer connecting pipe, the tangential ammonia injection pore seams are connected to the ammonia water combining pipes through the pore seam outer connecting pipes, the ammonia water combining pipes are collected to a header pipe, and the header pipe is communicated with an ammonia water interface.
7. The on-line coke cleaning and preventing device for the bridge pipe of the coke oven of claim 6, which is characterized in that: the ammonia pore seam is annotated to tangential on the bridge pipe body outer wall divide into two kinds according to the injection direction, is tangential notes ammonia pore seam A and tangential notes ammonia pore seam B respectively, and tangential notes ammonia pore seam A and tangential notes ammonia pore seam B distribute for the symmetry plane symmetry ground of bridge pipe body, warp the ammonia water flow direction that tangential notes ammonia pore seam A jetted is changed into clockwise spiral flow, warp the ammonia water flow direction that tangential notes ammonia pore seam B jetted is changed into anticlockwise spiral flow.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110431035.0A CN113088302B (en) | 2021-04-21 | 2021-04-21 | Coke oven bridge pipe on-line coke cleaning and preventing method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110431035.0A CN113088302B (en) | 2021-04-21 | 2021-04-21 | Coke oven bridge pipe on-line coke cleaning and preventing method and device |
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| CN113088302B true CN113088302B (en) | 2023-02-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087194U (en) * | 1991-05-09 | 1991-10-23 | 宣化钢铁公司 | Combined ammonia water nozzle |
| CN102268269A (en) * | 2011-07-06 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Method for drawing raw coal gas out of coke oven |
| CN106595948A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Coke oven bridge pipe raw gas pressure detection device |
| CN107899772A (en) * | 2017-12-21 | 2018-04-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of atomizer for raw coke oven gas cooling |
-
2021
- 2021-04-21 CN CN202110431035.0A patent/CN113088302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087194U (en) * | 1991-05-09 | 1991-10-23 | 宣化钢铁公司 | Combined ammonia water nozzle |
| CN102268269A (en) * | 2011-07-06 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Method for drawing raw coal gas out of coke oven |
| CN106595948A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Coke oven bridge pipe raw gas pressure detection device |
| CN107899772A (en) * | 2017-12-21 | 2018-04-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of atomizer for raw coke oven gas cooling |
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| CN113088302A (en) | 2021-07-09 |
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