CN220981949U - Furnace arch device of molten salt furnace - Google Patents
Furnace arch device of molten salt furnace Download PDFInfo
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- CN220981949U CN220981949U CN202322573420.6U CN202322573420U CN220981949U CN 220981949 U CN220981949 U CN 220981949U CN 202322573420 U CN202322573420 U CN 202322573420U CN 220981949 U CN220981949 U CN 220981949U
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- arch
- splicing block
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- 150000003839 salts Chemical class 0.000 title claims abstract description 43
- 238000005266 casting Methods 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000004321 preservation Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 13
- 238000005336 cracking Methods 0.000 description 7
- 239000011449 brick Substances 0.000 description 6
- 230000005465 channeling Effects 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model relates to the technical field of molten salt furnaces, in particular to a furnace arch device of a molten salt furnace, which comprises an inner arch, a left furnace wall and a right furnace wall which are arranged at intervals left and right. The utility model has reasonable and compact structure and convenient use, the refractory castable is prefabricated into the left splicing block and the right splicing block according to the shape of the furnace arch, then the left splicing block and the right splicing block are assembled into the arc-shaped arch bars on the operation site, the arc-shaped arch bars are sequentially arranged at the corresponding positions on the upper sides of the left wall body and the right wall body according to the shape of the furnace arch, finally the spliced inner arch is connected into a complete whole through the refractory castable, and then the composite heat insulation layer consisting of a plurality of heat-resistant heat insulation materials is hermetically laid, so that the integral casting construction period of the furnace arch of the molten salt furnace is greatly shortened, the casting operation time is greatly shortened, the repair operation efficiency of the furnace arch is improved, the maintenance period is effectively prolonged, the maintenance cost is reduced, constructors climb up and down in the construction operation process, the construction operation risk is effectively reduced, and the influence on normal production operation is reduced as much as possible.
Description
Technical Field
The utility model relates to the technical field of molten salt furnaces, in particular to a furnace arch device of a molten salt furnace.
Background
The coal-fired molten salt furnace uses bituminous coal or anthracite coal as fuel, molten salt (such as mixture of molten potassium nitrate, sodium nitrite and sodium nitrate) as heat carrier, and a molten salt circulating pump is used for forced liquid-phase circulation, so that heat energy is conveyed to heat utilization equipment, and then returned to the reheated direct-current special industrial furnace. The main characteristics are as follows: (1) The high-temperature heat source can obtain high working temperature under low operating pressure, and can be used as a high-temperature heat source below 500 ℃; (2) The heat supply temperature is stable, load-temperature adjustment can be accurately carried out, and the heat supply device can stably operate in an adjustable load section and maintain the optimal heat efficiency; (3) having an automatic operation control and safety monitoring device; (4) Closed cycle heat supply, high heat utilization efficiency and remarkable energy-saving effect; (5) The fused salt is solid at normal temperature, the fused salt must be preheated before starting, and the fused salt in the system must be completely returned into the storage tank when the system is stopped.
The following problems can occur when the molten salt furnace runs for a long period in the process of solid alkali evaporation and concentration use: (1) The flue gas in the hearth is flushed, the casting material falls off to cause thinning of the rear furnace arch, thinning and cracking of the casting layer, and reverse channeling of the flue gas to cause temperature rise of the grate, so that the running condition of the molten salt furnace is deteriorated, such as heat exchange efficiency is reduced, the temperature in the hearth is increased, the service life of the furnace body steel structure, the grate and the chain is shortened due to damage caused by heating, the unit consumption of coal is increased, and the like; (2) The service cycle is short after the furnace arch is thinned and locally repaired, and the whole pouring still needs to be carried out again; (3) The whole pouring construction period of the furnace arch of the molten salt furnace is long, and the maintenance cost is high; (4) The temperature of the baking furnace is difficult to accurately control after the integral pouring, the furnace arch is heated unevenly, and the service cycle is short; (5) affecting yield; (6) The pouring of the furnace arch of the molten salt furnace relates to three high-risk operations of limitation, ascending height and fire movement, and has the advantages of large operation risk and large potential safety hazard of long construction period.
Disclosure of Invention
The utility model provides a fused salt furnace arch device, which overcomes the defects of the prior art, can effectively solve the problems of furnace arch thinning caused by casting material falling, casting layer thinning and cracking, and smoke reverse channeling caused by grate temperature rise and poor running condition of a fused salt furnace existing in a hearth of the existing integral casting furnace arch; the service cycle is short after local repair; the integral pouring construction period is long, the maintenance cost is high, the service period is short, the construction operation risk is large, and the construction period is long and the safety hidden trouble is large; and the production is affected.
The technical scheme of the utility model is realized by the following measures: the utility model provides a fused salt stove furnace arch device, including the left furnace wall and the right furnace wall that the interval set up about and, be equipped with the grate between left furnace wall upper portion right side and the right furnace wall upper portion left side, be equipped with the bellied intrados that makes progress between left furnace wall upper portion right side and the right furnace wall upper portion left side, the intrados includes a plurality of arc bars that set up side by side from beginning to end, the arc bar includes left splice piece and right splice piece, left lower extreme and left furnace wall right side upside fixed mounting together of left splice piece, right lower extreme and right furnace wall upper side left side fixed mounting right splice piece together are installed to left upper end on left splice piece, sealed installation has pouring layer and composite insulation layer in proper order from inside to outside in the intrados outside.
The following are further optimizations and/or improvements to the above-described inventive solution:
The lower part of the upper right end of the left splicing block can be provided with a splicing gap with a rightward opening and a front-rear through, a clamping table with the right end fixedly installed with the lower part of the upper left end of the right splicing block is inserted into the splicing gap, and the left side of the upper left end of the right splicing block is propped against the right side of the upper right end of the left splicing block; the left side of the left lower end of the left splicing block can be provided with a first boss, the lower side of the first boss is fixedly installed with the upper side of the left furnace wall, and the right side of the right lower end of the right splicing block is provided with a second boss, the lower side of the second boss is fixedly installed with the upper side of the right furnace wall.
The left side wall of the splicing notch can be provided with a first clamping groove with a rightward opening and a front-rear through, a first clamping block with a right end fixedly mounted on the left side of the clamping table is arranged in the first clamping groove, the left side of the upper left part of the upper left end of the right splicing block can be provided with a second clamping groove with a leftward opening and a front-rear through, and a second clamping block with a left end fixedly mounted on the right side of the upper right part of the upper left splicing block is arranged in the second clamping groove.
The casting layer can be a refractory material casting layer which is sealed and cast outside the inner arch, and the thickness of the casting layer is 70 mm-80 mm.
The composite heat-insulating layer can comprise a first heat-insulating layer, a second heat-insulating layer and a third heat-insulating layer, wherein the first heat-insulating layer is a silicate material heat-insulating layer which is laid on the outer side of the pouring layer in a sealing way, and the thickness of the first heat-insulating layer is not less than 500 mm; the second heat-insulating layer comprises at least three layers of aluminum silicate fiber blankets which are laid on the outer side of the first heat-insulating layer in a sealing way; the third heat preservation is heat preservation cotton which is laid on the outer side of the second heat preservation in a sealing mode, and the left end and the right end of the third heat preservation are supported and sealed together with a fused salt furnace hearth.
The gaps between the two adjacent arc-shaped arch bars can be filled with ceramic fiber blankets in a sealing way.
The utility model has reasonable and compact structure and convenient use, firstly, the refractory castable is prefabricated into the left splicing block and the right splicing block according to the shape of the furnace arch, then the left splicing block and the right splicing block are assembled into the arc-shaped arch bars on the operation site, the arc-shaped arch bars are sequentially arranged at the corresponding positions on the upper sides of the left wall body and the right wall body according to the shape of the furnace arch, finally, the spliced inner arch is connected into a complete whole body through the refractory castable, and then, the composite heat-insulating layer formed by a plurality of heat-resistant heat-insulating materials is hermetically laid, so that the whole casting construction period of the furnace arch of the molten salt furnace is greatly shortened, the casting operation time is greatly shortened, the repairing operation efficiency of the furnace arch is improved, the maintenance period is effectively prolonged, the maintenance cost is reduced, constructors climb up and down in the construction operation process, the influence on normal production operation is effectively reduced as much as possible; the inner arch spliced by the refractory prefabricated parts is stronger and more resistant to repeated flushing and erosion of smoke, and can effectively avoid thinning, cracking and smoke reverse channeling of the furnace arch and avoid temperature rise of the fire grate and deterioration of the running furnace condition of the molten salt furnace.
Drawings
Fig. 1 is a schematic diagram of a front sectional structure of embodiment 1 of the present invention.
Fig. 2 is a schematic perspective view of the splice of fig. 1.
Fig. 3 is a schematic perspective view of the left splice block of fig. 2.
Fig. 4 is a schematic view of the right-hand cross-sectional structure of the use state of fig. 1.
The codes in the drawings are respectively: 1 is a left furnace wall, 2 is a right furnace wall, 3 is a fire grate, 4 is a left splicing block, 5 is a right splicing block, 6 is a casting layer, 7 is a splicing notch, 8 is a clamping table, 9 is a first boss, 10 is a second boss, 11 is a first clamping groove, 12 is a first clamping block, 13 is a second clamping block, 14 is a first heat preservation layer, 15 is a second heat preservation layer, 16 is a third heat preservation layer, and 17 is a fused salt furnace hearth support.
Detailed Description
The present utility model is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present utility model.
In the present utility model, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The utility model is further described below with reference to examples and figures:
Example 1: as shown in figures 1, 2, 3 and 4, the molten salt furnace arch device comprises an inner arch, a left furnace wall 1 and a right furnace wall 2 which are arranged at intervals left and right, a fire grate 3 is arranged between the right side of the upper part of the left furnace wall 1 and the left side of the upper part of the right furnace wall 2, an upwardly convex inner arch is arranged between the right part of the upper side of the left furnace wall 1 and the left part of the upper side of the right furnace wall 2, the inner arch comprises a plurality of arc-shaped arch bars which are arranged in parallel front and back, each arc-shaped arch bar comprises a left splicing block 4 and a right splicing block 5, the left lower end of the left splicing block 4 is fixedly arranged with the upper side of the right part of the left furnace wall 1, the right lower end of the right splicing block 4 is fixedly arranged with the right splicing block 5 of the upper side of the right furnace wall 2, and a pouring layer 6 and a composite heat-insulating layer are sequentially and hermetically arranged from inside to outside.
According to the requirements, the left wall body and the right wall body can be built by one or more of silicon-aluminum refractory bricks, alkaline series refractory bricks, carbon-containing refractory bricks, zirconium-containing refractory bricks and heat-insulating refractory bricks in the prior known technology; the shape of the inner arch is matched with that of a front arch or a middle arch or a rear arch of the coal-fired molten salt furnace in the prior art, as shown in fig. 4, the inner arch is matched with the rear arch, the longitudinal section is a quarter arc with a front high-back low shape, the shape can enable smoke to flow in the rear arch more smoothly, the smoke is effectively washed against the inner wall of the rear furnace arch, the smoke is prevented from washing against the inner wall of the inner arch, the inner arch is formed by splicing a plurality of arc-shaped bars which are arranged in parallel front and back, the arc-shaped bars are prefabricated members cast by refractory castable in the prior art, and the inner arch has good smoke washing resistance, wear resistance and high temperature resistance, and can effectively prevent the furnace arch from thinning, cracking and smoke channeling back under the smoke washing; the arc-shaped arch bars are divided into the left splicing block 4 and the right splicing block 5, so that the weight of a single prefabricated member can be effectively reduced, the quality of the prefabricated member is more convenient to manage and control, the carrying and storage are facilitated, the left splicing block 4 and the right splicing block 5 can be realized through riveting, splicing, clamping or threaded fastener connection in the prior art, and in addition, a small gap between two adjacent arc-shaped arch bars can also be reserved for pouring and bonding of casting materials; the pouring layer 6 is a heat-resistant pouring layer 6 in the prior art, and can bond the dispersed arc-shaped arch bars together to form a finished inner-layer furnace arch, and the composite heat-insulating layer formed by a plurality of heat-resistant heat-insulating materials can better insulate the inner-layer furnace arch, so that the temperature rise of the fire grate 3 and the running condition deterioration of the molten salt furnace caused by the reverse channeling of smoke are prevented.
In the use process, the left splicing block 4 and the right splicing block 5 are prefabricated through a die and refractory castable, then the left splicing block 4 and the right splicing block 5 are quickly assembled into arc-shaped arch bars, then the arc-shaped arch bars are sequentially arranged on the upper side of the left furnace wall 1 and the upper side of the right furnace wall 2 in parallel from front to back to form an inner arch, the spliced inner arches are adhered and connected together through the castable layer 6, and finally after the castable layer 6 is shaped, maintained and dried completely, a composite heat-insulating layer is laid in a sealing way from inside to outside; therefore, the whole pouring construction period of the fused salt furnace arch can be greatly shortened, the pouring operation time is greatly saved, the repairing operation efficiency of the furnace arch is improved, the maintenance period is effectively prolonged, the maintenance cost is reduced, the climbing up and down of constructors in the construction operation process is reduced, and the construction operation risk is effectively reduced.
The utility model has reasonable and compact structure and convenient use, firstly, the left splicing block 4 and the right splicing block 5 are prefabricated by refractory castable according to the shape of the furnace arch, then the left splicing block 4 and the right splicing block 5 are assembled into arc-shaped bars on an operation site, then the arc-shaped bars are sequentially arranged at the corresponding positions on the upper sides of the left wall body and the right wall body according to the shape of the furnace arch, finally, the spliced inner arch is connected into a complete whole body through the refractory castable, and then, a composite heat-insulating layer consisting of a plurality of heat-resistant heat-insulating materials is hermetically laid, so that the whole casting construction period of the furnace arch of the molten salt furnace is greatly shortened, the casting operation time is greatly shortened, the repairing operation efficiency of the furnace arch is improved, the maintenance period is effectively prolonged, the maintenance cost is reduced, constructors climb up and down in the construction operation process, and the influence on normal production operation is effectively reduced as much as possible; the inner arch spliced by the refractory prefabricated parts is stronger and more resistant to repeated flushing and erosion of smoke, and can effectively avoid thinning, cracking and smoke reverse channeling of the furnace arch and avoid temperature rise of the fire grate 3 and deterioration of the running furnace condition of the molten salt furnace.
The furnace arch device of the molten salt furnace can be further optimized or/and improved according to actual needs:
Example 2: as shown in fig. 1, 2 and 3, a splicing notch 7 with a rightward opening and penetrating front and rear is arranged at the lower part of the upper right end of the left splicing block 4, a clamping table 8 with the right end fixedly installed with the lower part of the upper left end of the right splicing block 5 is inserted into the splicing notch 7, and the left side of the upper left part of the upper left end of the right splicing block 5 is propped against the right side of the upper right part of the upper right end of the left splicing block 4; the left side of the left lower end of the left splicing block 4 is provided with a first boss 9, the lower side of which is fixedly arranged with the upper side of the left furnace wall 1, and the right side of the right lower end of the right splicing block 5 is provided with a second boss 10, the lower side of which is fixedly arranged with the upper side of the right furnace wall 2.
By the arrangement, the splicing and assembling process between the left splicing block 4 and the right splicing block 5 can be completed without other connecting pieces, so that the splicing operation efficiency of the arc-shaped arch bars can be effectively improved, and the operation time is saved; the first boss 9 and the second boss 10 can effectively increase the contact area between the arc arch bar and the corresponding positions of the upper sides of the left furnace wall 1 and the right furnace wall 2, so that the arc arch bar is more firmly installed, and the arc arch bar is prevented from shaking. According to the demand, all can realize through the integrated into one piece of prefabrication in the prior art between clamping bench 8 and the right splice piece 5, between first boss 9 and the left splice piece 4, between second boss 10 and the right splice piece 5.
Example 3: as shown in fig. 2 and 3, a first clamping groove 11 with a rightward and front-rear through opening is arranged on the left side wall of the splicing notch 7, a first clamping block 12 with a right end fixedly mounted with the left side of the clamping table 8 is arranged in the first clamping groove 11, a second clamping groove with a leftward and front-rear through opening is arranged on the left side of the upper left portion of the upper left end of the right splicing block 5, and a second clamping block 13 with a left end fixedly mounted with the right side of the upper right portion of the upper right end of the left splicing block 4 is arranged in the second clamping groove.
Through such setting, can effectively increase the area of contact between left splice piece 4 and the right splice piece 5, improve splice strength, can also form labyrinth seal between left splice piece 4 and right splice piece 5 simultaneously, effectively prevent that the flue gas from oozing from the junction of two, wash away the gating layer 6 in the intrados outside, cause gating layer 6 fracture or appear the hole. According to the demand, for the prefabricated drawing of patterns of left splice block 4 and right splice block 5 of being convenient for, first draw-in groove 11 and second draw-in groove are semicircle arc draw-in groove, and first fixture block 12 and second fixture block 13 are semicircle arc fixture block, all accessible prior art is in the integrated into one piece of prefabrication between first fixture block 12 and the clamping bench 8, between second fixture block 13 and the right splice block 5.
Example 4: as shown in fig. 1 and 4, the pouring layer 6 is a refractory material pouring layer sealed and poured on the outer side of the inner arch, and the thickness of the pouring layer 6 is 70 mm-80 mm.
Through the arrangement, the refractory material casting layer can bear high temperature, prevent cracking, deformation or falling, can connect an inner arch formed by splicing arc-shaped arch bars into a whole in a rapid and reliable manner, can play a certain heat preservation role, and the casting layer 6 of 70 mm-80 mm can ensure certain connection strength and air drying speed of the casting layer 6, thereby shortening the repairing operation period of the furnace arch.
Example 5: as shown in fig. 1 and 4, the composite heat-insulating layer comprises a first heat-insulating layer 14, a second heat-insulating layer 15 and a third heat-insulating layer 16, wherein the first heat-insulating layer 14 is a silicate material heat-insulating layer which is laid on the outer side of the pouring layer 6 in a sealing way, and the thickness of the first heat-insulating layer 14 is not less than 500 mm; the second heat-insulating layer 15 comprises at least three layers of aluminum silicate fiber blankets which are hermetically laid on the outer side of the first heat-insulating layer 14; the third heat preservation layer 16 is heat preservation cotton which is laid on the outer side of the second heat preservation layer 15 in a sealing mode, and the left end and the right end of the third heat preservation layer 16 are installed together with the fused salt furnace hearth support 17 in a sealing mode.
In the use process, the first heat preservation layer 14 which plays a role in internal heat preservation is arranged, so that the large-area heat preservation of the outer side of the inner arch can be realized, and the inner arch can be formed by building silicate heat preservation bricks in the prior art, can also be formed by casting perlite concrete or vermiculite concrete, and can also be realized by a plurality of layers of composite silicate boards; the second heat-insulating layer 15 in this embodiment comprises a three-layer aluminum silicate fiber blanket, which integrates fire resistance, heat insulation and heat preservation, and can maintain good tensile strength, toughness and fiber structure when used for a long time, and can effectively strengthen the connection strength of the first heat-insulating layer 14 and prevent the first heat-insulating layer 14 from cracking and deforming; the third heat preservation layer 16 can be used for reconnecting the repaired furnace arch with the hearth support, has the effect of external heat preservation, can effectively maintain the temperature stability in the furnace arch through the three heat preservation layers, reduces the heat loss of the furnace arch, and can also protect the operation safety of equipment.
Example 6: gaps between two adjacent arc-shaped arch bars are filled with ceramic fiber blankets in a sealing mode.
In the use process, when the gap between two adjacent arc arches is bigger, the gap between the two arc arches can be sealed by a ceramic fiber blanket (namely an aluminum silicate fiber blanket), so that the smoke is prevented from seeping out from the gap.
The technical characteristics form the embodiment of the utility model, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (9)
1. The utility model provides a fused salt furnace arch device, its characterized in that includes the left furnace wall and the right furnace wall that the interval set up about and, be equipped with the grate between left furnace wall upper portion right side and the right furnace wall upper portion left side, be equipped with the bellied intrados that makes progress between left furnace wall upper portion right side and the right furnace wall upper portion left side, the intrados includes a plurality of arc bars that set up side by side from beginning to end, the arc bar includes left splice piece and right splice piece, left lower extreme and left furnace wall right side upside fixed mounting together of left splice piece, right lower extreme and right furnace wall upper side left part fixed mounting right splice piece together are installed to left upper right side upper end to left splice piece, the intrados outside is sealed in proper order installs pouring layer and composite insulation layer from inside to outside.
2. The molten salt furnace arch device according to claim 1, wherein the lower part of the right upper end of the left splicing block is provided with a splicing notch which is opened rightward and is penetrated front and back, a clamping table is inserted into the splicing notch, the right end of the clamping table is fixedly installed with the lower part of the left upper end of the right splicing block, and the left side of the left upper part of the left upper end of the right splicing block is propped against the right side of the right upper part of the right upper end of the left splicing block; the left side of the left lower end of the left splicing block is provided with a first boss, the lower side of the first boss is fixedly arranged with the upper side of the left furnace wall, and the right side of the right lower end of the right splicing block is provided with a second boss, the lower side of the second boss is fixedly arranged with the upper side of the right furnace wall.
3. The molten salt furnace arch device according to claim 2, wherein the left side wall of the splicing notch is provided with a first clamping groove with a rightward opening and a front-rear penetration, a first clamping block with a right end fixedly installed with the left side of the clamping table is arranged in the first clamping groove, the left side of the upper left part of the upper left end of the right splicing block is provided with a second clamping groove with a leftward opening and a front-rear penetration, and a second clamping block with a left end fixedly installed with the right side of the upper right part of the upper right end of the left splicing block is arranged in the second clamping groove.
4. A molten salt furnace arch device according to claim 1, 2 or 3, wherein the casting layer is a refractory casting layer sealed and cast outside the inner arch, and the thickness of the casting layer is 70 mm-80: 80 mm.
5. The molten salt furnace arch device according to claim 1, 2 or 3, wherein the composite heat-insulating layer comprises a first heat-insulating layer, a second heat-insulating layer and a third heat-insulating layer, the first heat-insulating layer is a silicate material heat-insulating layer laid on the outer side of the pouring layer in a sealing manner, and the thickness of the first heat-insulating layer is not less than 500 mm; the second heat-insulating layer comprises at least three layers of aluminum silicate fiber blankets which are laid on the outer side of the first heat-insulating layer in a sealing way; the third heat preservation is heat preservation cotton which is laid on the outer side of the second heat preservation in a sealing mode, and the left end and the right end of the third heat preservation are supported and sealed together with a fused salt furnace hearth.
6. The molten salt furnace arch device according to claim 4, wherein the heat-insulating layer comprises a first heat-insulating layer, a second heat-insulating layer and a third heat-insulating layer, the first heat-insulating layer is a silicate material heat-insulating layer which is laid on the outer side of the pouring layer in a sealing manner, and the thickness of the first heat-insulating layer is not less than 500 mm; the second heat-insulating layer comprises at least three layers of aluminum silicate fiber blankets which are laid on the outer side of the first heat-insulating layer in a sealing way; the third heat preservation is heat preservation cotton which is laid on the outer side of the second heat preservation in a sealing mode, and the left end and the right end of the third heat preservation are supported and sealed together with a fused salt furnace hearth.
7. A molten salt furnace arch device according to claim 1 or 2 or 3 or 6, characterized in that the gap between two adjacent arcuate arches is sealed filled with a ceramic fibre blanket.
8. The molten salt furnace arch device of claim 4, wherein gaps between two adjacent arc-shaped arches are sealed and filled with ceramic fiber blankets.
9. The molten salt furnace arch device of claim 5, wherein gaps between two adjacent arc-shaped arches are sealed and filled with ceramic fiber blankets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322573420.6U CN220981949U (en) | 2023-09-21 | 2023-09-21 | Furnace arch device of molten salt furnace |
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| CN202322573420.6U CN220981949U (en) | 2023-09-21 | 2023-09-21 | Furnace arch device of molten salt furnace |
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