CN114958397B - Heat recovery coke oven masonry construction method - Google Patents
Heat recovery coke oven masonry construction method Download PDFInfo
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- CN114958397B CN114958397B CN202210595185.XA CN202210595185A CN114958397B CN 114958397 B CN114958397 B CN 114958397B CN 202210595185 A CN202210595185 A CN 202210595185A CN 114958397 B CN114958397 B CN 114958397B
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- 239000000571 coke Substances 0.000 title claims abstract description 116
- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- 239000011449 brick Substances 0.000 claims abstract description 232
- 238000003763 carbonization Methods 0.000 claims abstract description 75
- 238000002485 combustion reaction Methods 0.000 claims abstract description 48
- 239000012791 sliding layer Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 94
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 238000005192 partition Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 239000010426 asphalt Substances 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000003208 petroleum Substances 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000004939 coking Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 230000009970 fire resistant effect Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 235000014121 butter Nutrition 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000011049 filling Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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
- C10B29/02—Brickwork, e.g. casings, linings, walls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The heat recovery coke oven masonry construction method is characterized by comprising the following steps: a. measuring and paying off, b, paving common bricks sintered at the bottom of a coke oven, c, paving a sliding layer, d, paving the bottom of the coke oven, e, paving a combustion chamber, f, paving a carbonization chamber, and g, and paving the top of the carbonization chamber. The heat recovery coke oven masonry construction method has the advantages of simple operation, simple and convenient measures, capability of checking at any time and correcting deviation in time, construction masonry quality improvement, construction period shortening, good safety, small equipment investment and engineering cost reduction.
Description
Technical Field
The invention relates to a coke oven construction method, in particular to a heat recovery coke oven masonry construction method.
Background
Conventional vertical coke ovens for recycling chemical products have been used for over 100 years with great success in terms of technology and economy. However, with the increasing popularization and use of chemical coke-producing furnaces, the coke-producing furnaces have difficulties in environmental protection, comprehensive utilization of coal resources and the like. In order to make the coking industry healthier, clean heat recovery coke ovens have been developed. The heat recovery coke oven has the advantages of good coke quality, less environmental pollution, capability of utilizing weak sticky coal and non-sticky coal, and the like.
However, the heat recovery coke oven is a novel coke oven, the construction experience at home and abroad is relatively less, a complete set of construction technology and method are not formed yet, however, the masonry quality of Jiao Lugong Cheng Zhongjiao oven masonry is important for the heat recovery coke oven, the service life of the coke oven is determined, and the masonry quality of masonry can cause great influence on the installation of furnace protecting iron parts. The establishment of the heat recovery coke oven masonry construction process is particularly important.
Therefore, how to provide a standard heat recovery coke oven masonry construction method becomes a problem to be solved in engineering.
Disclosure of Invention
The invention aims to provide a safe and reliable heat recovery coke oven masonry construction method.
In order to achieve the above object, the technical solution of the present invention is:
the heat recovery coke oven masonry construction method is characterized by comprising the following steps:
a. Measuring and paying-off, comprising the following steps:
(1) Discharging a longitudinal center line of the coke oven, a positive line of the coke oven and a main wall center line of the coke oven on a bottom plate of the coke oven;
(2) Introducing a longitudinal center line of the coke oven, a positive line of the coke oven, a brick layer line and a positive line error control line on the resistance wall;
b. the method for bricking the furnace bottom sintering common brick comprises the following steps:
(1) The first layer is fully paved with common sintered bricks, is built according to the positive line and the central line of each carbonization chamber, and is leveled according to the brick layer line;
(2) According to brick layer lines of each layer of sintered ordinary bricks, central lines of carbonization chambers and heat dissipation Kong Bianxian, firstly removing stubbles and building furnace heads on two sides of a coke, and then building each layer of sintered ordinary bricks by hanging lines, and checking the channel size of a heat dissipation hole at any time during building;
(3) After the uppermost layer of the brick is laid and sintered fully, the elevation and the flatness of the top surface are checked, an elevation plane diagram is drawn, and the allowable error of the elevation of the top surface is required to meet the design standard;
c. The sliding layer is paved, which comprises the following steps:
(1) Firstly fully paving a layer of ceramic fiber blanket on the surface of a sintered common brick along the central line direction of a coking chamber of the coke oven by taking the front line of the coke oven as a boundary, then paving a layer of galvanized iron sheet on the ceramic fiber blanket along the longitudinal central line of the coke oven, and overlapping two adjacent iron sheets by 5-10mm; coating a layer of butter on the surface of the galvanized iron sheet, and paving a layer of petroleum asphalt paper on the surface of the butter along the central line direction of a coking chamber of the coke oven;
(2) Laying ceramic fiber blankets, galvanized iron sheets and petroleum asphalt paper sliding layers along with laying when laying, and prohibiting large-area pre-laying;
d. The method for building the coke oven bottom comprises the following steps:
(1) When each layer of the coke oven bottom is built, the furnace end brick arrangement lines on the two sides of the machine coke of the carbonization chamber are drawn on the built masonry;
(2) When each layer of the coke oven bottom is built, firstly building the oven head bricks at the coke side of the coke oven, checking the oven heads by utilizing the positive line error control line, and then building by hanging lines;
(3) The width of each ventilation channel is checked at any time when the ventilation channel layer is built;
(4) Bricks on the ventilation hole layer should be firstly built into brick columns on two sides of the ventilation hole, and then a ventilation channel is built into top brick columns; when the top brick row is built, the ash should be thinned, so that the mortar is prevented from being squeezed into expansion joints at two sides, and in order to prevent foreign matters from falling into the ventilating duct after the top brick row is built, all the ventilating holes must be blocked by rubber plugs;
(5) Spreading the horsemanure paper according to the regulations on the expansion joints at the two sides of the vent hole, wherein the horsemanure paper is used for finishing paper processing according to the prescribed width in advance, and petroleum asphalt paper sheets are used for covering the expansion joints when the later layer is built;
e. the combustion chamber is built, comprising the following steps:
(1) The construction sequence of the combustion chamber is as follows: combustion chamber bottom, combustion chamber main wall, combustion chamber six-joint arch partition wall, combustion chamber six-joint arch crown, and machine coke two-side sealing wall;
(2) When the two layers of silicon bricks at the bottom of the combustion chamber are built, the arrangement lines of furnace end bricks at the two sides of the machine coke of the carbonization chamber are drawn on the built masonry; when in construction, firstly, the bricks of the coke side coke oven of the machine are constructed, the oven heads are checked by using the oven head control lines, and then the bricks are constructed by hanging lines; firstly, building silica bricks at the main wall position; then dividing brickwork in the two main walls into a plurality of parts according to expansion joints, firstly building single-row bricks at intervals, then building double-row bricks by using expansion joint plates, firstly placing the expansion joint plates at the positions of the expansion joints, and then building the bricks; the expansion joint plate moves along with the masonry, and mortar on the expansion joint plate is cleaned if necessary; after the expansion joint plate is extracted, the masonry on two sides of the expansion joint is not required to be knocked;
(3) Marking the position of a main wall furnace end of the combustion chamber on the surface of a brick layer at the bottom of the combustion chamber according to a positive line and the center line of the main wall of the carbonization chamber, aligning the position of the brick according to the marking during bricking, building the main wall furnace end to prevent the furnace end from moving on a sliding layer, building four layers of bricks at one time by the furnace end, building the furnace end in a stepped stubble-withdrawing way in the wall, aligning the position of the furnace shoulder and the furnace end by using a vertical line from the positive line, checking the perpendicularity of the furnace shoulder and the furnace wall head by using a line hanging and guiding rule, and checking the widths of the furnace wall and the combustion chamber and the widths of the furnace end positive line except the furnace shoulder and the straight conditions of brick surfaces at two sides by using a template or guiding rule; then, pulling alignment lines from furnace heads at two sides for building, firstly building a brick at the center of the alignment lines, stringing the bricks layer by layer, aligning upper corner hanging lines of the bricks, and aligning lower corners according to lower bricks; when the small arches of the air flow holes on the fourth layer of main wall are built, the X-shaped strips are used for supporting the two sides of the building, and then the door bricks are built;
(4) The six-joint arch partition wall of the combustion chamber is built according to the surface line and the elevation line of brick layers at two sides of the main wall, furnace end bricks at two sides of the coke of the machine are built firstly, and the bricks are built layer by layer in series, and a brick is built at the center of the alignment line firstly; the flatness and verticality of the six-joint arch partition wall and the spacing of the six-joint arch partition wall are required to be checked at any time when the six-joint arch partition wall is built;
(5) The six-joint arch masonry should be simultaneously built by Jiao Cexiang machine sides of each hole combustion chamber, so that the six-joint arch lock bricks are not dropped; processing PE plates and petroleum asphalt paper at expansion joints of six-joint arches in advance before building; when in masonry, the main wall elevation line is used for masonry, and each five brick scribing lines are used as a masonry scale for checking and controlling brick joints; when the brick is built, bricks on two sides are firstly built, and then the lock bricks are built at the same time; checking flatness of the six-joint-arch combined bricks by using a guiding rule along with building, wherein the top surfaces of the six-joint-wall arch top combined bricks are required to reach certain flatness, so that dry arrangement is required, the spacing between the partition walls and mortar joints at two sides of the combined bricks are strictly controlled, and pointing and cleaning are performed after the six-joint-arch combined bricks are built; the expansion joints on two sides of the six-joint arch combined brick are cleaned up while being built; after the building of the six-joint arch top combined brick is completed, cleaning the six-joint arch at one time;
(6) The sealing wall is built by taking the surface line of the furnace end as a boundary, so that the verticality is ensured, and meanwhile, the temperature measuring holes and the expansion joint size are controlled;
f. the carbonization chamber is built, which comprises the following steps:
(1) The construction sequence is as follows: the method comprises the steps of building a main wall of a carbonization chamber, building arch blanks, building large arches of the carbonization chamber, building large arches of high-alumina bricks on two sides of machine coke of the carbonization chamber, and building bottom of the carbonization chamber;
(2) The main wall of the carbonization chamber is built in the same way as the main wall of the combustion chamber;
(3) Building an arch tire: the arch tire consists of a tire frame and a tire strip, the tire frame is accurately manufactured according to the span and the height of the arch, the length of the carbonization chamber is reasonably distributed to be used as the tire strip according to the length of the carbonization chamber, the thickness of the arch tire is in accordance with the bearing requirement, the upper surface of the arch tire is identical with the appearance of the lower surface of the arch or the roof, a scaffold tube is erected to be used as a support, and the scaffold is required to be firmly installed; placing the tire frame on a double steel pipe on an adjustable support of the scaffold, nailing the tire strips on the tire frame to form an integral arch tire, and adjusting the adjustable support on the top of the scaffold by matching with a level gauge to ensure that the elevation position of the top surface of the arch tire meets the requirement;
(4) The large arch masonry of the carbonization chamber must be built from the coke side to the machine side at the same time; before building, marking all hole orientations of all main walls so as to prevent a building error during building; when in masonry, the arches or vaults should be staggered, and the arches and vaults which are staggered should be paved along longitudinal seam pull lines to keep the brick surface straight; the large arch and the vault must be built symmetrically from the arch feet at the two sides to the center at the same time, and the big end of the arch brick is forbidden to be inverted; the arch and the radial seam of the arch are matched with the radial direction; the inner surfaces of arches and arch bricks of the arches should be flat, and the staggered teeth of the arch bricks should reach the standard; the locking bricks are symmetrically and uniformly distributed according to the arch and the central line of the arch; after each arch tire fire-resistant masonry is built, standing for one night, and moving the scaffold and the arch tire to the later tire building position integrally after the adjustable support is adjusted in the next day;
(5) The large arches of the blast furnace bricks on the two sides of the machine coke are supported by the scaffold when being built by the large arches on the two sides of the machine coke because the arch crown elevation positions are higher, and the large arches are consistent with the large arches of the carbonization chamber; a gap is reserved at the position of the door closing brick of the single jig frame for closing the door;
(6) The bottom of the carbonization chamber is built with the bottom of the combustion chamber;
g. The top of the carbonization chamber is built by laying bricks, which comprises the following steps:
(1) The furnace top main wall is built with the main wall of the carbonization chamber;
(2) When the furnace roof is built, the arch roof is built symmetrically from two arch legs at the two sides at the same time, and the large arch is regarded as an arch blank when the furnace roof fire-resistant bricks are built; when the furnace top is built, part of furnace end and furnace top refractory bricks are kept from being built according to the requirements of a baking furnace, the furnace end part is built by withdrawing half bricks from each layer of high-alumina bricks at the two sides of the large arch, and refractory bricks with the width of a fire hole array are partially left in the furnace.
The heat recovery coke oven masonry construction method of the invention can be further realized by adopting the following technical measures.
The method, wherein the various measurement lines control line errors are + -1 mm.
The method is characterized in that the error of linear dimensions of each dimension such as wall width, center distance and the like is +/-3.
In the method, the allowable error of the brick joint is minus 1 mm to minus 2mm.
In the method, the flatness of the top surface of the six-linked wall arch top combined brick and the bottom of the carbonization chamber is controlled within 3 mm.
The method, wherein the dislocation of the bottom of the carbonization chamber and the main wall of the carbonization chamber should not exceed 1mm.
The method as described above, wherein the arch and the inner surface of the arch should be flat and the individual bricks should not be staggered by more than 3mm.
After the technical scheme is adopted, the heat recovery coke oven masonry construction method has the following advantages:
1. The operation is simple, the measure is simple, and the function of checking and correcting deviation in time can be realized at any time;
2. The construction quality is improved, the construction period is shortened, and the safety is good;
3. The equipment investment is small, and the engineering cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a heat recovery Jiao Lujie according to an embodiment of the present invention.
In the figure: the fire-fighting brick comprises a sintered common brick foundation 1, a furnace bottom foundation 2, a combustion chamber main wall 3, a carbonization chamber main wall 4, a furnace top main wall 5, a heat dissipation hole 6, a ventilating duct 7, a ventilating duct 8, a combustion chamber bottom 9, a six-joint arch partition wall 10, a six-joint arch crown 11, a carbonization chamber bottom 12, a carbonization chamber large arch 13, a furnace top 14 and a vertical flame path 15.
Detailed Description
The invention is further described below with reference to examples and figures thereof.
Examples
Referring now to fig. 1, fig. 1 is a schematic diagram illustrating a heat recovery Jiao Lujie according to an embodiment of the present invention. As shown in the figure, the size of the heat recovery coke oven is 87750mm multiplied by 16740mm multiplied by 5635mm, and the heat recovery coke oven consists of a common sintered brick foundation 1, a furnace bottom foundation 2, a combustion chamber, a carbonization chamber and a furnace top. The furnace bottom is characterized by comprising 5 layers of furnace bottom basic furnace bottom sintered common bricks, 5 layers of furnace bottom basic clay bricks, 10 layers of combustion chambers, 15 layers of combustion chambers and 8 layers of furnace tops.
The invention relates to a heat recovery coke oven masonry construction method, which comprises the following steps:
1. Measuring pay-off
1.1 Discharging a longitudinal center line of the coke oven, a positive line of the coke oven and a center line of a main wall of the coke oven on a bottom plate of the coke oven.
1.2 Introducing a coke oven longitudinal center line, a coke oven positive line, a brick layer line and a positive line error control line on a resistance wall.
2. Ordinary brick for furnace bottom sintering
2.1 The first layer of full-spread sintered common bricks are laid according to the surface line and the central line of each carbonization chamber, and are leveled according to the brick layer line.
2.2, The heat dissipation channel layer sintering common bricks are built according to brick layer lines of the layers of sintering common bricks, the center line of each carbonization chamber and the side lines of the heat dissipation holes 6, namely, firstly removing stubbles and building furnace heads on two sides of the coke, and then hanging lines, so that the channel size of the heat dissipation holes needs to be checked at any time during building.
2.3, After the uppermost layer of the brick is built and the common brick is fully laid, checking the elevation and flatness of the top surface, drawing an elevation plane graph, and allowing the error of the elevation of the top surface to meet the design standard.
3. Sliding layer laying
3.1, Fully paving a layer of ceramic fiber blanket with the thickness of 10mm on the surface of a sintered common brick along the central line direction of a carbonization chamber of the coke oven by taking the front line of the coke oven as a boundary, and then paving a layer of galvanized iron sheet with the thickness of 0.5mm on the ceramic fiber blanket along the longitudinal central line of the coke oven, wherein the two iron sheets are in lap joint with 5-10 mm. Coating a layer of butter on the surface of the galvanized iron sheet, and paving a layer of petroleum asphalt paper on the surface of the butter along the central line direction of a coking chamber of the coke oven.
3.2, When the ceramic fiber blanket, the galvanized iron sheet and the petroleum asphalt paper sliding layer are paved, the ceramic fiber blanket, the galvanized iron sheet and the petroleum asphalt paper sliding layer are paved along with the paving, and the large-area pre-paving is forbidden.
4. Coke oven bottom masonry
4.1, When each layer of masonry is performed, the furnace end brick arrangement lines on the two sides of the machine coke of the carbonization chamber are drawn on the masonry which is completed by masonry.
4.2, Firstly building the coke side furnace end bricks of the machine when each layer is built, checking the furnace end by utilizing the positive line error control line, and then building by hanging lines.
4.3 The stack of ventilation ducts 7 must be checked at any time for the width dimensions of the ventilation ducts during masonry.
4.4 The bricks of the vent hole layer are firstly built into brick columns at two sides of the vent hole 8, and then the ventilation channel is built into top brick columns; when the overhead bricks are built, the ash should be thinned, so that the mortar is prevented from being squeezed into expansion joints at two sides, and after the overhead bricks are built, all ventilation holes are blocked by rubber plugs to prevent foreign matters from falling into ventilation channels.
4.6 The expansion joints at two sides of the vent holes are paved with the horsemanure paper of 3mm according to the regulation, the horsemanure paper is processed according to the regulation width in advance, and the expansion joints are covered by petroleum asphalt paper sheets when the later layer is built.
5. Combustion chamber masonry
5.1 Masonry order: combustion chamber bottom, combustion chamber main wall, combustion chamber six-joint arch partition wall, combustion chamber six-joint arch crown and machine coke two-side sealing wall.
5.2, When the two layers of silica bricks at the bottom 9 of the combustion chamber are built, the arrangement lines of furnace end bricks at the two sides of the machine coke of the carbonization chamber are drawn on the built masonry; when in construction, firstly, the bricks of the coke side coke oven of the machine are constructed, the oven heads are checked by using the oven head control lines, and then the bricks are constructed by hanging lines; firstly, building silica bricks at the main wall position; then dividing brickwork in the two main walls into a plurality of parts according to expansion joints, firstly building single-row bricks at intervals, then building double-row bricks by using expansion joint plates, firstly placing the expansion joint plates at the positions of the expansion joints, and then building the bricks; the expansion joint plate moves along with the masonry, and mortar on the expansion joint plate is cleaned if necessary; after the expansion joint plate is pulled out, the masonry on two sides of the expansion joint is not required to be knocked.
5.3 The main wall 3 of the combustion chamber is built according to the surface line and the center line of the main wall of the carbonization chamber, the position of the main wall furnace end of the combustion chamber is carved on the surface of a brick layer at the bottom of the combustion chamber, the position of the brick is aligned according to the line during brick building, the main wall furnace end is built to prevent the furnace end from moving on a sliding layer, the furnace end is built with four layers of bricks once, the furnace end is built with a step in the wall for removing stubble, the position of the furnace shoulder and the furnace end is aligned by using a vertical line from the front line, the perpendicularity of the furnace end shoulder and the furnace wall head is checked by using a line and a guiding rule, and the width of the furnace wall and the combustion chamber and the width of the furnace end front line except the furnace shoulder and the straight condition of brick surfaces at two sides are checked by using a template or guiding rule. And then pulling alignment lines from furnace heads at two sides for building, firstly building a brick at the center of the alignment lines, stringing the bricks layer by layer, aligning upper corner hanging lines of the bricks, and aligning lower corners by pressing down the bricks. In particular, when the small arch of the air flow holes on the fourth layer of main wall is built, the X-shaped strips are used for supporting the two sides of the building, and then the door bricks are built.
5.4 Building the six-joint arch partition wall 11 of the combustion chamber, firstly building furnace end bricks on two sides of the coke of the machine according to the elevation lines of brick layers on two sides of the main wall, and building the furnace end bricks layer by layer in series, wherein a brick is built on the center of the alignment line. The flatness and verticality of the six-joint arch partition wall and the spacing of the six-joint arch partition wall are required to be checked at any time when the six-joint arch partition wall is built.
5.5 Building six-joint arch, wherein each hole combustion chamber is built by Jiao Cexiang machine sides at the same time, so that the six-joint arch lock bricks can be prevented from falling down; processing PE plates and petroleum asphalt paper at expansion joints of six-joint arches in advance before building; when in masonry, the main wall elevation line is used for masonry, and each five brick scribing lines are used as a masonry scale for checking and controlling brick joints; when the brick is built, bricks on two sides are firstly built, and then the lock bricks are built simultaneously. The flatness of the combined bricks of the six-joint arch vault 11 is checked along with the building by using a guiding rule, and the top surface of the combined bricks of the six-joint arch vault 11 is leveled and the flatness is controlled within 3mm, so that the dry arrangement is required, the spacing between the partition walls and the mortar joints on two sides of the combined bricks are strictly controlled, and the joint pointing and cleaning are carried out after the building of the combined bricks of the six-joint arch is completed. The expansion joints on two sides of the six-joint arch combined brick are cleaned up while being laid. After the building of the combined bricks of the six-joint arch top is completed, cleaning is carried out in the six-joint arch once.
5.6, The wall sealing masonry is performed by taking the surface line of the furnace end as a boundary, so that the verticality is ensured, and the temperature measuring holes and the expansion joint size are controlled.
6. Carbonization chamber masonry
6.1 Masonry sequence: the main wall of the carbonization chamber is built, the arch tire is erected, the large arch of the carbonization chamber is built, the high-alumina bricks on the two sides of the machine coke of the carbonization chamber are large arch, and the bottom 12 of the carbonization chamber is built.
6.2 The main wall of the carbonization chamber is built with 5.3 sections of main walls of the combustion chamber,
6.3 Building arch tires: the arch tire consists of a tire frame and a tire strip, the tire frame is accurately manufactured according to the span and the height of the arch, the length of the carbonization chamber is reasonably distributed to be used as the tire strip according to the length of the carbonization chamber, the thickness of the arch tire is in accordance with the bearing requirement, the upper surface of the arch tire is identical with the appearance of the lower surface of the arch or the roof, a scaffold tube is erected to be used as a support, and the scaffold is required to be firmly installed; the jig is placed on a double steel pipe on an adjustable support of the scaffold, the strip is nailed on the jig to form an integral arch tire, and then the adjustable support on the top of the scaffold is adjusted by matching with a level gauge to enable the elevation position of the top surface of the arch tire to meet the requirements.
6.4 The large arch 13 of the carbonization chamber is built, and all carbonization chambers are built from the side of the coke side at the same time; before building, marking all hole orientations of all main walls 4 of the carbonization chambers so as to prevent a building error during building; when in masonry, the arches or vaults should be staggered, and the arches and vaults which are staggered should be paved along longitudinal seam pull lines to keep the brick surface straight; the large arch and the vault must be built symmetrically from the arch feet at the two sides to the center at the same time, and the big end of the arch brick is forbidden to be inverted; the arch and the radial seam of the arch are matched with the radial direction; the arch and the inner surface of the arch should be flat, and the dislocation of the individual bricks should not exceed 3mm; the locking bricks are symmetrically and uniformly distributed according to the arch and the central line of the arch. After each arch tire fire-resistant masonry is built, the arch tire fire-resistant masonry needs to be stood for one night, and the scaffold and the arch tire are integrally moved to the later tire building position after the adjustable support is adjusted in the next day.
6.5, The large arches of the blast furnace bricks on the two sides of the machine coke are supported by the scaffold when being built by the large arches on the two sides of the machine coke because the arch crown elevation positions are higher, and the large arches are consistent with the large arches of the carbonization chamber; it should be noted that a notch square door is required to be reserved at the position of the door closing brick of the single jig frame.
6.6 The bottom of the carbonization chamber is built with the bottom of the 5.2 sections of combustion chamber.
7. Carbonization chamber furnace roof masonry
7.1 The furnace top main wall 5 is built with 6.2 sections of carbonization chamber main walls.
7.2, When the furnace top is built, the arch roof is built symmetrically from two arch legs at the same time to the center, and the large arch is regarded as an arch blank when the furnace top refractory bricks are built; when the furnace top 12 is built, part of furnace end and furnace top refractory bricks are kept from being built according to the requirements of a baking furnace, the furnace end part is built by withdrawing half bricks from each layer of high-alumina bricks at the two sides of the large arch, and refractory bricks with the width of a fire hole array are partially left in the furnace.
The heat recovery coke oven masonry construction method of the invention also needs to pay attention to the following masonry points in actual construction:
1. Before the coke oven is built, all important parts such as six-joint arches of the coke oven, a main wall of a carbonization chamber, an arch corner wall of a furnace top, a rising pipe and the like are pre-built. The pre-masonry of the coke oven is carried out according to a formal coke oven masonry construction method, and problems existing in design, materials and construction are checked and recorded in detail according to acceptance quality standards.
2. A sliding surface on the basic platform, a six-joint arch bottom layer plane and a carbonization chamber bottom surface elevation; the vertical wall arch foot brick seat surfaces of the carbonization chambers all need to be drawn with elevation plane diagrams. The positions of the corresponding points on the elevation plane view are respectively one point on the central line of each carbonization chamber and one point on the longitudinal central line, which is 400-500 mm away from the front line of the machine focus side.
3. The general situation of bricklaying is that bricklaying is carried out from the furnace head to the hanging wire in the furnace; when the line is hung, a brick is built on the longitudinal central line, so that the datum line is ensured not to drop down.
4. The surface of the built bricks is cleaned before each layer of bricks is built. When the brick is broken or reworked and broken, the stubble must be left, the stepped oblique stubble should be left.
5. The allowed processing bricks cannot be processed on the masonry; the processing surface of the brick and the brick with the edge and corner missing should be placed on the masonry surface, and the working surface of the carbonization chamber is strictly forbidden to use the processed brick.
6. When bricks are built, a mallet or a rubber mallet is used for beating and aligning, and an iron hammer is not used for beating the bricks; after the mud in the masonry is dried and fixed, the quality defect of the masonry is not corrected by a beating method, and the re-masonry is dismantled; the movable bricks are rebuilt due to the treading on the masonry.
The brick joints should keep the fire-resistant slurry full, and no empty joints are allowed, therefore, two sides of the vertical joint surfaces are required to be dusted, the horizontal joint surfaces can be dusted on one side, but the brick joints are evenly paved, the brick joints of the outer surfaces of all walls and fire paths and the inner surfaces of other holes are built by adopting a pulp extrusion method, the brick joints are tightly and thickly joint-lined, the joint filling and joint-lining of the hidden brick joints at each part should be carried out layer by layer, the surface brick joints should be carried out when the brick joints are not dry, usually, the brick joints are not finished on the same day, the brick joints cannot be held for the next day, the surface of the joint-lined brick joints are not accurately protruded from the wall surface, and the brick joints should be flat and polished with the wall. The brick joints in the vertical flame path 15 should be hooked along with the building, at most, the brick joints should not exceed 500mm, and the wall surface upper joint should be completely hooked before each shift; the slurry on the vertical fire channel wall should be cleaned frequently, and sundries should be taken out after the inner wall of the vertical fire channel is cleaned thoroughly before the vertical fire channel is capped.
7. Filling materials with the thickness being equivalent to that of the filling materials are clamped in the coke oven when the coke oven is built under 5mm, and the filling materials are processed according to the design size in advance; when the coke oven builds the expansion joint with the thickness of more than 5mm, an expansion joint template is used. Firstly, placing the template at the position of an expansion joint, then, bricking, taking out the template, and then, not only beating the brickwork expansion joint templates at two sides of the expansion joint, but also adopting a planed wood board, wherein the thickness of the template is 1mm smaller than the design size of the width of the expansion joint, the width is 10-20mm smaller than the thickness of a brick layer, the length is about 800mm, and the surface of the brickwork forming the expansion joint is flat; before the expansion joint is filled, the slurry and sundries in the expansion joint are cleaned by a dust collector or compressed air, and can be filled after being checked to be qualified. The pressure of the compressed air is strictly controlled, so that the slurry in the brick joints cannot be blown out; the thickness of the asphalt is 10-20mm, the upper surface of the asphalt is level with the surface of the brick layer of the layer, and the asphalt dripped on the other brick surfaces is completely cleaned and then is built on the upper surface; saw dust filling the expansion joints is dried and has no sundries, and the saw dust cannot be tamped during filling; the expansion joint on the front of the furnace body is tightly plugged and sealed by a refractory fiber rope which is adhered with slurry, and the depth reaches 15-20mm. The expansion joints are laid with sliding joint paper according to the specification of the construction drawing, the paper should cover the whole sliding surface and the lower expansion joints, and the paper is processed according to the specified width in advance
8. The clear width of the coking side coking chamber of the coking chamber is not smaller than that of the machine side coking chamber.
9. When the large arch of the furnace top and the six-joint arch at the bottom of the carbonization chamber are built, each carbonization chamber of the whole furnace should be synchronously built in sections, and lock bricks are simultaneously driven in.
10. When a furnace wall is built, checking the straightness of the wall surface by using a 2m wood guiding ruler at any time, and checking the perpendicularity of the wall surface by using a line vertical guiding ruler frequently; the furnace wall bricks should be kept smooth, the surfaces of the furnace wall and the furnace bottom should not generate dislocation opposite to the coke pushing direction, the individual non-reverse dislocation should not be larger than 1mm, and dislocation is generally not arranged between the upper layer and the lower layer of the carbonization chamber. The elevation between adjacent walls is kept at any time, and when the upper furnace wall is built, the elevation is carefully checked, adjusted layer by layer and kept consistent at the top of the carbonization chamber wall.
Compared with the prior art, the heat recovery coke oven masonry construction method has the functions of checking at any time and correcting deviation in time, effectively improves the construction masonry quality, and has the characteristics of simple operation, powerful measures, small equipment investment, cost saving, simplicity and practicability, effective construction period saving and good safety.
The above embodiments are provided for illustrating the present invention only, and not for limiting the present invention, and various changes or modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention. Accordingly, all equivalent arrangements should be considered to be within the scope of the present invention as defined in the claims.
Claims (5)
1. The heat recovery coke oven masonry construction method is characterized by comprising the following steps:
a. Measuring and paying-off, comprising the following steps:
(1) Discharging a longitudinal center line of the coke oven, a positive line of the coke oven and a main wall center line of the coke oven on a bottom plate of the coke oven;
(2) Introducing a longitudinal center line of the coke oven, a positive line of the coke oven, a brick layer line and a positive line error control line on the resistance wall;
b. the method for bricking the furnace bottom sintering common brick comprises the following steps:
(1) The first layer is fully paved with common sintered bricks, is built according to the positive line and the central line of each carbonization chamber, and is leveled according to the brick layer line;
(2) The heat dissipation channel layer is used for bricking and sintering common bricks, each layer of sintered common bricks is built by firstly removing stubbles and building furnace heads on two sides of the coke and then hanging the furnace heads according to brick layer lines of each layer of sintered common bricks, the central line of each carbonization chamber and heat dissipation Kong Bianxian, and the channel size of a heat dissipation hole is required to be checked at any time during the building;
(3) After the uppermost layer of the brick is laid and sintered fully, the elevation and the flatness of the top surface are checked, an elevation plane diagram is drawn, and the allowable error of the elevation of the top surface is required to meet the design standard;
c. The sliding layer is paved, which comprises the following steps:
(1) Firstly fully paving a layer of ceramic fiber blanket on the surface of a sintered common brick along the central line direction of a coking chamber of the coke oven by taking the front line of the coke oven as a boundary, then paving a layer of galvanized iron sheet on the ceramic fiber blanket along the longitudinal central line of the coke oven, and overlapping two adjacent iron sheets by 5-10mm; coating a layer of butter on the surface of the galvanized iron sheet, and paving a layer of petroleum asphalt paper on the surface of the butter along the central line direction of a coking chamber of the coke oven;
(2) Laying ceramic fiber blankets, galvanized iron sheets and petroleum asphalt paper sliding layers along with laying when laying, and prohibiting large-area pre-laying;
d. The method for building the coke oven bottom comprises the following steps:
(1) When each layer of the coke oven bottom is built, the furnace end brick arrangement lines on the two sides of the machine coke of the carbonization chamber are drawn on the built masonry;
(2) When each layer of the coke oven bottom is built, firstly building the oven head bricks at the coke side of the coke oven, checking the oven heads by utilizing the positive line error control line, and then building by hanging lines;
(3) The width of each ventilation channel is checked at any time when the ventilation channel layer is built;
(4) Bricks on the ventilation hole layer should be firstly built into brick columns on two sides of the ventilation hole, and then a ventilation channel is built into top brick columns; when the top brick row is built, the ash should be thinned, so that the mortar is prevented from being squeezed into expansion joints at two sides, and in order to prevent foreign matters from falling into the ventilating duct after the top brick row is built, all the ventilating holes must be blocked by rubber plugs;
(5) Spreading the horsemanure paper according to the regulations on the expansion joints at the two sides of the vent hole, wherein the horsemanure paper is used for finishing paper processing according to the prescribed width in advance, and petroleum asphalt paper sheets are used for covering the expansion joints when the later layer is built;
e. the combustion chamber is built, comprising the following steps:
(1) The construction sequence of the combustion chamber is as follows: combustion chamber bottom, combustion chamber main wall, combustion chamber six-joint arch partition wall, combustion chamber six-joint arch crown, and machine coke two-side sealing wall;
(2) When the two layers of silicon bricks at the bottom of the combustion chamber are built, the arrangement lines of furnace end bricks at the two sides of the machine coke of the carbonization chamber are drawn on the built masonry; when in construction, firstly, the bricks of the coke side coke oven of the machine are constructed, the oven heads are checked by using the oven head control lines, and then the bricks are constructed by hanging lines; firstly, building silica bricks at the main wall position; then dividing brickwork in the two main walls into a plurality of parts according to expansion joints, firstly building single-row bricks at intervals, then building double-row bricks by using expansion joint plates, firstly placing the expansion joint plates at the positions of the expansion joints, and then building the bricks; the expansion joint plate moves along with the masonry, and mortar on the expansion joint plate is cleaned if necessary; after the expansion joint plate is extracted, the masonry on two sides of the expansion joint is not required to be knocked;
(3) Marking the position of a main wall furnace end of the combustion chamber on the surface of a brick layer at the bottom of the combustion chamber according to a positive line and the center line of the main wall of the carbonization chamber, aligning the position of the brick according to the marking during bricking, building the main wall furnace end to prevent the furnace end from moving on a sliding layer, building four layers of bricks at one time by the furnace end, building the furnace end in a stepped stubble-withdrawing way in the wall, aligning the position of the furnace shoulder and the furnace end by using a vertical line from the positive line, checking the perpendicularity of the furnace shoulder and the furnace wall head by using a line hanging and guiding rule, and checking the widths of the furnace wall and the combustion chamber and the widths of the furnace end positive line except the furnace shoulder and the straight conditions of brick surfaces at two sides by using a template or guiding rule; then, pulling alignment lines from furnace heads at two sides for building, firstly building a brick at the center of the alignment lines, stringing the bricks layer by layer, aligning upper corner hanging lines of the bricks, and aligning lower corners according to lower bricks; when the small arches of the air flow holes on the fourth layer of main wall are built, the X-shaped strips are used for supporting the two sides of the building, and then the door bricks are built;
(4) The six-joint arch partition wall of the combustion chamber is built according to the surface line and the elevation line of brick layers at two sides of the main wall, furnace end bricks at two sides of the coke of the machine are built firstly, and the bricks are built layer by layer in series, and a brick is built at the center of the alignment line firstly; the flatness and verticality of the six-joint arch partition wall and the spacing of the six-joint arch partition wall are checked at any time when the six-joint arch partition wall is built so as to meet the requirements;
(5) The six-joint arch masonry should be simultaneously built by Jiao Cexiang machine sides of each hole combustion chamber, so that the six-joint arch lock bricks are not dropped; processing PE plates and petroleum asphalt paper at expansion joints of six-joint arches in advance before building; when in masonry, the main wall elevation line is used for masonry, and each five brick scribing lines are used as a masonry scale for checking and controlling brick joints; when the brick is built, bricks on two sides are firstly built, and then the lock bricks are built at the same time; checking flatness of the six-joint-arch combined bricks by using a guiding rule along with building, wherein the top surfaces of the six-joint-arch-crown combined bricks reach certain flatness, so that dry arrangement is needed, the spacing between the partition walls and mortar joints at two sides of the combined bricks are strictly controlled, and pointing and cleaning are carried out after the six-joint-arch combined bricks are built; the expansion joints on two sides of the six-joint arch combined brick are cleaned up while being built; after the building of the six-joint arch top combined brick is completed, cleaning the six-joint arch at one time;
(6) The sealing wall is built by taking the surface line of the furnace end as a boundary, so that the verticality is ensured, and meanwhile, the temperature measuring holes and the expansion joint size are controlled;
f. the carbonization chamber is built, which comprises the following steps:
(1) The construction sequence is as follows: the method comprises the steps of building a main wall of a carbonization chamber, building arch blanks, building large arches of the carbonization chamber, building large arches of high-alumina bricks on two sides of machine coke of the carbonization chamber, and building bottom of the carbonization chamber;
(2) The main wall of the carbonization chamber is built in the same way as the main wall of the combustion chamber;
(3) Building an arch tire: the arch tire consists of a tire frame and a tire strip, the tire frame is accurately manufactured according to the span and the height of the arch, the length of the carbonization chamber is reasonably distributed to be used as the tire strip according to the length of the carbonization chamber, the thickness of the arch tire is in accordance with the bearing requirement, the upper surface of the arch tire is identical with the appearance of the lower surface of the arch or the roof, a scaffold tube is erected to be used as a support, and the scaffold is required to be firmly installed; placing the tire frame on a double steel pipe on an adjustable support of the scaffold, nailing the tire strips on the tire frame to form an integral arch tire, and adjusting the adjustable support on the top of the scaffold by matching with a level gauge to ensure that the elevation position of the top surface of the arch tire meets the requirement;
(4) The large arch masonry of the carbonization chamber must be built from the coke side to the machine side at the same time; before building, marking all hole orientations of all main walls so as to prevent a building error during building; when in masonry, the arch and the vault should be built by staggered joint, the arch and the vault built by staggered joint should be built by pulling lines along the longitudinal joint, and the brick surface is kept straight; the large arch and the vault must be built symmetrically from the arch feet at the two sides to the center at the same time, and the big end of the arch brick is forbidden to be inverted; the arch and the radial seam of the arch are matched with the radial direction; the arch and the inner surface of the arch brick of the arch should be smooth, and the staggered teeth of the arch brick should reach the standard; the locking bricks are symmetrically and uniformly distributed according to the arch and the central line of the arch; after each arch tire fire-resistant masonry is built, standing for one night, and moving the scaffold and the arch tire to the later tire building position integrally after the adjustable support is adjusted in the next day;
(5) The large arches of the blast furnace bricks on the two sides of the machine coke are supported by the scaffold when being built by the large arches on the two sides of the machine coke because the arch crown elevation positions are higher, and the large arches are consistent with the large arches of the carbonization chamber; a gap is reserved at the position of the door closing brick of the single jig frame for closing the door;
(6) The bottom of the carbonization chamber is built with the bottom of the combustion chamber;
g. The top of the carbonization chamber is built by laying bricks, which comprises the following steps:
(1) The building mode of the furnace top main wall is the same as that of the carbonization chamber main wall;
(2) When the furnace roof is built, the arch roof is built symmetrically from two arch legs at the two sides at the same time, and the large arch is regarded as an arch blank when the furnace roof fire-resistant bricks are built; when the furnace top is built, part of furnace end and furnace top refractory bricks are kept from being built according to the requirements of a baking furnace, the furnace end part is built by withdrawing half bricks from each layer of high-alumina bricks at the two sides of the large arch, and refractory bricks with the width of a fire hole array are partially left in the furnace.
2. The heat recovery coke oven masonry construction method according to claim 1, wherein the control line error is ±1mm.
3. The heat recovery coke oven masonry construction method according to claim 1, wherein said brick joint allowable error is-1- +2 mm.
4. The method of claim 1, wherein the flatness of the top surface of the hexagonally-arched top composite brick is controlled to within 3 mm.
5. A method of heat recovery coke oven masonry construction according to claim 1, wherein said staggered teeth of said arches should not exceed 3mm.
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| CN114181719A (en) * | 2021-09-26 | 2022-03-15 | 中国化学工程第六建设有限公司 | Large coke oven building and building process |
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| DE202006009985U1 (en) * | 2006-06-06 | 2006-10-12 | Uhde Gmbh | Horizontal coke oven has a flat firebrick upper layer aver a domed lower layer incorporating channels open to ambient air |
| CN102533282A (en) * | 2011-11-10 | 2012-07-04 | 中冶天工集团有限公司 | Building process for combustion chamber of tamping coke oven with 5.5m coking chamber |
| JP6056635B2 (en) * | 2013-04-26 | 2017-01-11 | 新日鐵住金株式会社 | How to build a coke oven top |
| JP6572485B2 (en) * | 2015-05-27 | 2019-09-11 | 黒崎播磨株式会社 | Coke oven construction method |
| CN105825026B (en) * | 2016-03-30 | 2019-04-23 | 中国一冶集团有限公司 | Coke oven straight section flue arch stuffing construction method based on BIM technology |
| CN108457477B (en) * | 2018-03-28 | 2020-08-18 | 中国一冶集团有限公司 | Construction vehicle for building arch tyre of industrial furnace flue and arch tyre erecting method |
| CN109628109B (en) * | 2018-12-28 | 2021-01-19 | 中国一冶集团有限公司 | Heat recovery coke oven assembled arch center and construction method thereof |
| CN111808617A (en) * | 2020-08-14 | 2020-10-23 | 辽宁科技大学工程技术有限公司 | Integrally-cast sealing block furnace end structure and construction method thereof |
| CN111876165B (en) * | 2020-08-19 | 2024-09-06 | 鞍山华泰环能工程技术有限公司 | Main wall structure of coke oven regenerator, coke oven regenerator and coke oven |
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| CN114181719A (en) * | 2021-09-26 | 2022-03-15 | 中国化学工程第六建设有限公司 | Large coke oven building and building process |
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