Large Coke Oven Body 6S Flat Layer Building Method
20250066669 ยท 2025-02-27
Inventors
- Yi YANG (Chengdu, Sichuan, CN)
- Gang HE (Chengdu, Sichuan, CN)
- Jinhong XIE (Chengdu, Sichuan, CN)
- Changjun CHEN (Chengdu, Sichuan, CN)
- Mulin LI (Chengdu, Sichuan, CN)
- Mao LIANG (Chengdu, Sichuan, CN)
- Shouquan CHEN (Chengdu, Sichuan, CN)
- Yingjun TANG (Chengdu, Sichuan, CN)
- Xiaoliang ZHANG (Chengdu, Sichuan, CN)
Cpc classification
International classification
Abstract
A method for building a coke own includes steps of building an oven body building three-dimensional control network, and building a coke side or machine side refractory brick receiving platform; based on the three-dimensional control network and the refractory brick receiving platform, marking out a laying position of each layer of refractory bricks layer by layer, arranging the refractory bricks required by laying of each layer by layer, laying the refractory bricks layer by layer according to the marking and the arrangement, jointing the laid refractory bricks layer by layer, cleaning the jointed refractory bricks layer by layer, and checking and accepting the cleaned refractory bricks layer by layer. In this method, quality control is carried out on coke oven body masonry on the whole through six dimensions.
Claims
1. A large coke oven body 6S flat layer building method, comprising the following steps: step S1, checking and accepting the coke oven foundation platform; step S2, building an oven body building three-dimensional control network, and building a coke side or machine side refractory brick receiving platform; step S3, based on the three-dimensional control network, marking out a laying position of each layer of refractory bricks layer by layer; step S4, based on the refractory brick receiving platform, arranging the refractory bricks required by laying of each layer layer by layer; step S5, based on the three-dimensional control network, laying the refractory bricks layer by layer according to the marking and the arrangement; step S6, jointing the laid refractory bricks layer by layer; step S7, cleaning the jointed refractory bricks layer by layer; step S8, based on the three-dimensional control network, checking and accepting the cleaned refractory bricks layer by layer.
2. The large coke oven body 6S flat layer building method according to claim 1, wherein the step S2 of building an oven body building three-dimensional control network comprises: step S2.1, setting out of a benchmark line for the coke oven foundation platform (1); step S2.2, installation and fixation of oven columns (11) or vertical poles; step S2.3, installation of horizontal poles (19); and step S2.4, laying of masonry control lines (28); forming height control lines for each wall and each layer of refractory bricks of the entire oven body by a wall layer height line (25) on the oven column (11), a wall center line (27) and a wall width line (26) on the horizontal pole (19); controlling each wall length in the oven by a longitudinal coke oven center line (3) and longitudinal coke oven control sideline (4) on both sides, forming a control line for the entire wall length.
3. The large coke oven body 6S flat layer building method according to claim 2, wherein the step S2.1 of setting out of a benchmark line for the coke oven foundation platform (1) comprises: setting out longitudinal coke oven center lines (3), longitudinal coke oven control sidelines (4) and oven end carbonization chamber center lines (5) on the accepted coke oven foundation platform (1) and buttress walls on both ends using survey control points of the coke oven foundation platform (1).
4. The large coke oven body 6S flat layer building method according to claim 2, wherein the step S2.2 of installation and fixation of oven columns (11) or vertical poles comprises: when the coke oven building process is to first erect oven columns and then build the oven body, first installing oven columns which will be installed on a small corbel (10) of a roof edge beam (9) of the coke oven foundation platform to build a three-dimensional control network, and measuring the elevation of the small corbel (10) before installation to ensure its elevation within the set range; placing each combustion chamber center line (8) of the coke oven onto the corresponding small corbel (10) through control points, and rechecking it based on the benchmark line set out on the coke oven foundation platform (1) to ensure the accurate position of each combustion chamber center line (8); hoisting the oven columns (11) and erecting the oven columns (11), then adjusting the center so that the oven column center is identical with the combustion chamber center on the small corbel (10), and the horizontal deviation value is within the set range; after adjusting the center, temporarily fixing the oven columns (11), and at the top position of the oven column (11), connecting and fixing the entire row of oven columns (11) by horizontal fixing poles (30); controlling the oven column spacing deviation and overall deviation of the oven columns (11) within the set range; slightly adjusting the elevation, verticality, and horizontal position of the oven column (11) by adjusting the adjusting pad (12) between the bottom of the oven column (11) and the coke oven foundation platform (1), as well as the adjusting wedge (15) between the side of the oven column (11) and the coke oven foundation platform (1); after rechecking the position and verticality of the oven column, setting out the center line (8) of each combustion chamber on the small corbel (10) on the oven column (11), and setting out the wall layer height line (25) built on the oven body on the oven column (11); when the coke oven building process is to first build the oven body and then erect oven columns, first temporarily installing vertical poles to build a three-dimensional control network, the height of the vertical pole being determined according to the height of the coke oven masonry; after adjusting the verticality and horizontal position of the vertical pole, setting out the center line of each combustion chamber on the small corbel (10) on the vertical pole, and setting out the wall layer height line of the oven body masonry on the vertical pole, the lower part of the vertical pole being fixed to the small corbel (10) by anchor bolts (14) or embedded parts.
5. The large coke oven body 6S flat layer building method according to claim 4, wherein, in the step S2.2, a lower cross brace (16) is pulled oppositely between the lower end of the oven column (11) and the coke oven foundation platform (1), and the lower cross brace (16) is sleeved with an adjustment sleeve (17); the lower cross brace (16) is connected with an adjusting bolt (18) that presses the adjustment sleeve (17), and the adjustment sleeve (17) temporarily compresses the oven column (11) and the coke oven foundation platform (1).
6. The large coke oven body 6S flat layer building method according to claim 2, wherein the step S2.3 of installing horizontal poles (19) is as follows: horizontally arranging the horizontal poles (19) between two oven columns (11) at sides of the coke oven, and temporarily fixing the horizontal poles (19) and oven columns (11) by temporary stationary fixtures; after relaxing the temporary stationary fixtures, the horizontal poles can move vertically along the oven columns (11), and the horizontal poles (19) and the oven columns (11) are fixed temporarily after the temporary stationary fixtures are tightened; when laying each layer of refractory bricks, adjusting the horizontal poles (19) to align at the elevation line on this layer of oven columns (11), and setting out a wall center line (27) and a wall width line (26) of the wall body to be built on the horizontal poles (19), in order to provide precision control for laying of this layer of refractory bricks.
7. The large coke oven body 6S flat layer building method according to claim 2, wherein the step S2.4 of laying of masonry control lines (28) is as follows: drawing the wall center markings and wall width markings of the regenerator wall, inclined flue wall, carbonization chamber and combustion chamber wall or oven top wall in the oven body on the horizontal poles (19), and laying the wall center line (27) and wall width line (26) according to the markings during the masonry process, in order to dynamically control the masonry precision in real time.
8. The large coke oven body 6S flat layer building method according to claim 1, wherein the step S2 of building a coke side or machine side refractory brick receiving platform comprises: to realize fixed point layer-by-layer arrangement of refractory bricks, a refractory brick receiving platform (32) is built at the machine side or coke side according to the receiving situation of the coke oven masonry refractory bricks; fixed feeding points (33) are provided along the length direction of the coke oven according to the number of oven holes, as designated positions for vertical transportation of the coke oven shed crane; after the refractory bricks sent from the warehouse are transported to the site, they are transported to the refractory brick receiving platform (32); after the previous process is completed, the inspected refractory bricks are mixed into the designated position of the oven wall one by one through the receiving scaffold board (34); and meanwhile, the refractory brick receiving platform (32) should be continuously increased with the height of the oven wall masonry, and the number of steps should be synchronously increased upwards.
9. The large coke oven body 6S flat layer building method according to claim 1, wherein the step S3 of marking out a laying position of each layer of refractory bricks layer by layer based on the three-dimensional control network is as follows: making a refractory brick setting out scale rod and marking the size line of the refractory bricks on the refractory brick setting out scale rod for the oven wall; for different parts of the oven wall, the refractory brick setting out scale rod needs to be marked with a line; after the completion of the previous layer of refractory bricks on the oven wall inside the coke oven, before the laying of this layer of refractory bricks, marking the position line of each refractory brick on both sides of the completed wall using the refractory brick setting out scale rod; and the laying of each layer of refractory bricks must be marked using a refractory brick setting out scale rod to pre-mark the laying position of each refractory brick in the oven wall, and rechecked through the three-dimensional control network to achieve layer-by-layer marking.
10. The large coke oven body 6S flat layer building method according to claim 1, wherein the step S4 of arranging the refractory bricks required by laying of each layer layer by layer based on the refractory brick receiving platform is as follows: after marking the refractory bricks on each layer of the coke oven, the refractory bricks to be laid on this layer are first transported in a full box to the refractory brick receiving platform (32) for unpacking inspection, then, according to the masonry drawings, the corresponding refractory bricks are horizontally transported, and the refractory bricks are fixedly arranged within the layer-by-layer marking positions of each wall; the entire layer of refractory bricks on the oven body is fully configured to achieve the layer-by-layer arrangement of refractory bricks on the oven body; the step S5 of laying the refractory bricks layer by layer according to the marking and the arrangement based on the three-dimensional control network is as follows: after all the refractory bricks of each layer of the coke oven are arranged, the oven builders will build the refractory bricks of this layer as a whole, so that the entire coke oven body is built in a flat layer, reaching the level of the oven body built layer by layer; during the masonry process, the masonry precision should be dynamically controlled in real time based on the built three-dimensional control network to ensure the masonry precision and quality, and the masonry operation should simultaneously complete the masonry of the entire layer of refractory bricks; the step S6 of jointing the laid refractory bricks layer by layer is as follows: after each layer of refractory bricks in the coke oven is laid and before the slurry is solidified, the oven builder checks and adjusts the wall of the refractory bricks in that layer; after passing the inspection, the joints of all refractory bricks in that layer should be compacted and jointed; jointing slurry should be pressed into the joints of the refractory bricks using a jointing roller, and smeared evenly and densely until the oven body is jointed layer by layer; the step S7 of cleaning the jointed refractory bricks layer by layer is as follows: after all the refractory bricks in each layer of the coke oven are laid and jointed, the oven builder should clean the walls and bodies of the refractory bricks in that layer to ensure that the entire coke oven is clean, tidy, and unobstructed, achieving the goal of layer-by-layer cleaning of the oven body; and the step S8 of checking and accepting the cleaned refractory bricks layer by layer based on the three-dimensional control network is as follows: after all the refractory bricks in each layer of the coke oven are cleaned, the laid refractory bricks should be inspected according to the built three-dimensional control network, and the error should be controlled within the set range; the masonry quality of each layer is checked and controlled to ensure the overall precision and quality of the coke oven, and achieve the acceptance of the oven masonry layer by layer.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0042]
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[0044]
[0045]
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[0050]
[0051]
[0052] In the figures, 1-coke oven foundation platform, 2-buttress wall, 3-longitudinal coke oven center line, 4-longitudinal coke oven control sideline, 5-oven end carbonization chamber center line, 6-coke side sideline, 7-machine side sideline, 8-combustion chamber center line, 9-roof edge beam, 10-small corbel, 11-oven column, 12-adjusting pad, 13-sliding layer, 14-anchor bolt, 15-adjusting wedge, 16-lower cross brace, 17-adjustment sleeve, 18-adjusting bolt, 19-horizontal pole, 20-compression splint, 21-spring, 22-clamping bolt, 23-clamping nut, 24-snap splint, 25-wall layer height line, 26-wall width line, 27-wall center line, 28-masonry control line, 29-oven wall, 30-horizontal fixing pole, 31-coke oven body, 32-refractory brick receiving platform, 33-fixed feeding point, 34-receiving scaffold board, 35-post, 36-horizontal pole, 37-diagonal tie.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0053] The present invention will be described through the following non-restrictive examples.
Embodiment 1
[0054] As shown in
[0063] The coke oven body flat layer building process is based on a three-dimensional control network and a refractory brick receiving platform, and in strict accordance with the 6S process-layer-by-layer marking, layer-by-layer arrangement, layer-by-layer masonry, layer-by-layer jointing, layer-by-layer cleaning, and layer-by-layer acceptance to ensure the masonry precision and quality of each layer, and achieve high-precision and rapid masonry.
[0064] The interval between different layers of the coke oven body should be 2 hours. The order of laying the coke oven body 6S flat layer is from bottom to top according to the structure of the coke oven body: regenerator, inclined flue, carbonization chamber and combustion chamber, and coke oven top.
[0065] The step S1 of checking and accepting the coke oven foundation platform is as follows: completing the construction of the coke oven foundation platform 1 and laying the sliding plates, carrying out the oven body 6S flat layer masonry after acceptance.
[0066] The step S2 of building an oven body building three-dimensional control network comprises: S2.1, setting out of a benchmark line for the coke oven foundation platform; S2.2, installation and fixation of oven columns 11 or vertical poles; S2.3, installation of horizontal poles 19; S2.4, laying of masonry control lines 28.
[0067] As shown in
[0068] As shown in
[0069] When the coke oven building process is to first erect oven columns and then build the oven body, first installing oven columns 11 which will be installed on a small corbel 10 of a roof edge beam 9 of the coke oven foundation platform to build a three-dimensional control network, and measuring the elevation of the small corbel 10 before installation to ensure its elevation within a range of +3 mm. It is possible to use a steel plate with the same thickness as the deviation value (thin backing plates are not allowed) to adjust the elevation deviation value by +1 mm.
[0070] Placing each combustion chamber center line 8 of the coke oven onto the corresponding small corbel 10 through control points, and rechecking it based on the benchmark line set out on the coke oven foundation platform 1 to ensure the accurate position of each combustion chamber center line 8;
[0071] Hoisting the oven columns 11 by hoists and cranes and erecting the oven columns 11, then adjusting the center so that the oven column center is identical with the combustion chamber center on the small corbel 10, and the horizontal deviation value is within a range of +3 mm.
[0072] The oven columns 11 are temporarily fixed after center adjustment; a lower cross brace (16) is pulled oppositely between the lower end of the oven column (11) and the coke oven foundation platform (1), and the lower cross brace (16) is sleeved with an adjustment sleeve (17); the lower cross brace (16) is connected with an adjusting bolt (18) that presses the adjustment sleeve (17), and the adjustment sleeve (17) temporarily compresses the oven column (11) and the coke oven foundation platform (1). During the installation stage of the coke oven spring, the adjustment sleeve on the lower cross brace is removed and replaced with the coke oven spring.
[0073] At 1-2 m from the top of the oven column 11, the entire row of oven columns 11 is connected and fixed using a horizontal fixing pole 30 (28 channel steel) through bolt connection. The two ends of the horizontal fixing pole are fixed at the buttress wall. According to the actual situation on site, 1-2 horizontal fixing poles 30 (with a vertical spacing of 1-3 m) can be added to stabilize the oven column 11.
[0074] The deviation D between oven columns should be controlled within a range of +3 mm, and the overall deviation of every 5 consecutive oven columns should be less than +3 mm. The sliding layer 13 in contact between the bottom of the oven column and the backing plate should be coated with yellow dry lubricant to facilitate the sliding caused by the expansion of the oven body during drying.
[0075] In order to control the verticality of the oven column and the distance between the oven column and the center of the oven, the lower cross brace is installed at the spring position by using the adjustment sleeve. The length of the adjustment sleeve is calculated based on the actual situation. slightly adjusting the elevation, verticality, and horizontal position of the oven column 11 by adjusting the adjusting pad 12 between the bottom of the oven column 11 and the coke oven foundation platform 1, as well as the adjusting wedge 15 between the side of the oven column 11 and the coke oven foundation platform 1. The gap & between the lower part of the oven column 11 and the small corbel should be controlled within the range of 10-20 mm, and the exposed threads should be protected with plastic sleeves.
[0076] After rechecking the position and verticality of the oven column, setting out the center line 8 of each combustion chamber on the small corbel 10 on the oven column 11, and setting out the wall layer height line 25 built on the oven body on the oven column 11.
[0077] When the coke oven building process is to first build the oven body and then erect oven columns, first temporarily installing vertical poles to build a three-dimensional control network instead of oven columns, the vertical poles being made of 12060 mm rectangular steel tubes, the height of the vertical pole being determined according to the height of the coke oven masonry; after adjusting the verticality and horizontal position of the vertical pole, setting out the center line of each combustion chamber on the small corbel on the vertical pole, and setting out the height line of the wall layer of the oven body masonry on the vertical pole. The lower part of the vertical pole is fixed to the small corbel 10 with anchor bolts 14 or embedded parts, and the upper part is provided with horizontal fixing poles 30 which are made of 10050 mm aluminum alloy rectangular tubes.
[0078] As shown in
[0079] When laying each layer of refractory bricks, adjusting the horizontal poles 19 to align at the wall layer height line 25 on this layer of oven columns 11, and setting out a wall center line 27 and a wall width line 26 of the wall body to be built on the horizontal poles 19, in order to provide precision control for laying of this layer of refractory bricks. The horizontal poles 19 move upwards layer by layer with the number of masonry layers.
[0080] The temporary fixing fixture includes two structural forms, one consisting of a compression splint 20 that presses the oven column 11 from both sides, and the other consisting of a snap splint 24 that is integrally pressed onto the oven column 11.
[0081] As shown in
[0082] As shown in
[0083] The fixture splint is made of 5 mm steel sheet. At the same time, the fixture with a spring cannot only effectively fix the horizontal pole, but also can control the splint force through the size of spring deformation, avoiding the horizontal pole deformation caused by excessive fixing force and inconsistent fixing force at both ends of the splint, which affects the precision of the three-dimensional control network. Based on this, the use of spring splint effectively improves the control precision of the three-dimensional control network. Temporary fixing fixtures should be provided at least once every one oven column, and ensure no less than two fixed points between each horizontal pole and oven column.
[0084] As shown in
[0085] As shown in
[0087] The wall layer height line 25 on the oven column 11, wall center line 27 and wall width line 26 on the horizontal pole 19, longitudinal coke oven center line 3 and the longitudinal coke oven control sideline 4 can effectively perform three-dimensional control on the length, width and the height of the wall masonry in each part of the coke oven body. Meanwhile, as the three-dimensional control network is established according to the entire coke oven body, the spatial position relationship between various walls under the three-dimensional control network has also been controlled effectively and fundamentally, and the masonry process can be controlled dynamically in real time.
[0088] The coke oven body flat layer building three-dimensional control network should control the precision of its own markings within 0.5 mm to ensure the quality of the formal masonry of the oven body. The three-dimensional control network is an independent system, and its oven column 11 and horizontal pole 19 must be firmly fixed to ensure effective precision control.
[0089] The step S2 of building a coke side or machine side refractory brick receiving platform comprises: to realize fixed point layer-by-layer arrangement of refractory bricks, a refractory brick receiving platform 32 is built at the machine side or coke side according to the receiving situation of the coke oven masonry refractory bricks, in order to meet construction requirements.
[0090] As shown in
[0091] After the refractory bricks sent from the warehouse are transported to the site, they are transported to the refractory brick receiving platform 32 by cranes; after the previous process is completed, the inspected refractory bricks are mixed into the designated position of the oven wall one by one through the receiving scaffold board 34. meanwhile, the refractory brick receiving platform 32 should be continuously increased with the height of the oven wall masonry, and the number of steps should be synchronously increased upwards.
[0092] The machine side or coke side refractory brick receiving platform 32 can also be erected using a steel pipe scaffold platform with a step distance of 1.8 m, a platform structure width of 3 m, and meeting the load requirements.
[0093] The step S3 of marking out a laying position of each layer of refractory bricks layer by layer based on the three-dimensional control network is as follows: making a refractory brick setting out scale rod using 5050 mm battens with the length of of oven wall length (width of the coke oven body) and marking the size line (including the mortar joint size) of the refractory bricks on the refractory brick setting out scale rod for the oven wall; for different parts of the oven wall, the refractory brick setting out scale rod needs to be marked with a line.
[0094] After the completion of the previous layer of refractory bricks on the oven wall inside the coke oven, before the laying of this layer of refractory bricks, marking the position line of each refractory brick on both sides of the completed wall using the refractory brick setting out scale rod. the laying of each layer of refractory bricks must be marked using a refractory brick setting out scale rod to pre-mark the laying position of each refractory brick in the oven wall, and rechecked through the three-dimensional control network to achieve layer-by-layer marking.
[0095] The step S4 of arranging the refractory bricks required by laying of each layer layer by layer based on the refractory brick receiving platform is as follows: after marking the refractory bricks on each layer of the coke oven, the refractory bricks to be laid on this layer are first transported in a full box to the refractory brick receiving platform 32 for unpacking inspection on the receiving platform, then, according to the masonry drawings, the corresponding refractory bricks are horizontally transported, and the refractory bricks are fixedly arranged within the layer-by-layer marking positions of each wall; the entire layer of refractory bricks on the oven body is fully configured to achieve the layer-by-layer arrangement of refractory bricks on the oven body.
[0096] The step S5 of laying the refractory bricks layer by layer according to the marking and the arrangement based on the three-dimensional control network is as follows: after all the refractory bricks of each layer of the coke oven are arranged, the oven builders will build the refractory bricks of this layer as a whole, so that the entire coke oven body is built in a flat layer, reaching the level of the oven body built layer by layer. During the masonry process, the masonry precision should be dynamically controlled in real time based on the built three-dimensional control network to ensure the masonry precision and quality. During masonry, the full degree of slurry in the brick joint should be 95%, and the masonry operation should simultaneously complete the masonry of the entire layer of refractory bricks.
[0097] The step S6 of jointing the laid refractory bricks layer by layer is as follows: after each layer of refractory bricks in the coke oven is laid and before the slurry is solidified, the oven builder checks and adjusts the wall of the refractory bricks in that layer; after passing the inspection, the joints of all refractory bricks in that layer should be compacted and jointed; jointing slurry should be pressed into the joints of the refractory bricks using a jointing roller, and smeared evenly and densely until the oven body is jointed layer by layer.
[0098] The step S7 of cleaning the jointed refractory bricks layer by layer is as follows: after all the refractory bricks in each layer of the coke oven are laid and jointed, the oven builder should clean the walls and bodies of the refractory bricks in that layer to ensure that the entire coke oven is clean, tidy, and unobstructed, achieving the goal of layer-by-layer cleaning of the oven body.
[0099] The step S8 of checking and accepting the cleaned refractory bricks layer by layer based on the three-dimensional control network is as follows: after all the refractory bricks in each layer of the coke oven are cleaned, the laid refractory bricks should be inspected according to the built three-dimensional control network, and the error should be controlled within a range of +2 mm; the masonry quality of each layer is checked and controlled to ensure the overall precision and quality of the coke oven, and achieve the acceptance of the oven masonry layer by layer.
[0100] The aforementioned basic example of the present invention and its further selection examples can be freely combined to form multiple embodiments, which can be adopted and claimed by the present invention. In the solutions of the present invention, each selection example can be arbitrarily combined with any other basic example and selection example.
[0101] All above are only preferred embodiments of the present invention, which do not limit the scope of the present invention. All alterations, equivalent replacements and improvements, without departing from the spirit and principle of the present invention, should fall into the protection scope of the present invention.