CN115634627A - Large-scale coking-resistant vinylidene fluoride cracking furnace - Google Patents
Large-scale coking-resistant vinylidene fluoride cracking furnace Download PDFInfo
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- CN115634627A CN115634627A CN202211645786.3A CN202211645786A CN115634627A CN 115634627 A CN115634627 A CN 115634627A CN 202211645786 A CN202211645786 A CN 202211645786A CN 115634627 A CN115634627 A CN 115634627A
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- 238000005336 cracking Methods 0.000 title claims abstract description 77
- 238000004939 coking Methods 0.000 title claims abstract description 42
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 239000002918 waste heat Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 23
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000197 pyrolysis Methods 0.000 description 9
- 230000003028 elevating effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000571 coke Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- BHNZEZWIUMJCGF-UHFFFAOYSA-N 1-chloro-1,1-difluoroethane Chemical compound CC(F)(F)Cl BHNZEZWIUMJCGF-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of cracking furnaces, and particularly relates to a large-scale anti-coking vinylidene fluoride cracking furnace which comprises a cracking furnace body, a waste heat recoverer and a quencher, wherein a furnace tube and a zone heating device from top to bottom are arranged in the cracking furnace body; the discharge port of the cracking furnace is communicated with a waste heat recoverer through a pipeline; the furnace tube is a vertical furnace tube, a first opening and closing mechanism is arranged at the bottom of the vertical furnace tube, a second opening and closing mechanism is arranged at the position, below the furnace tube, of the cracking furnace body, and an anti-coking mechanism is arranged below the cracking furnace body; the large-scale anti-coking vinylidene fluoride cracking furnace has the effects of automatically cleaning coking materials, improving the production efficiency and reducing labor.
Description
Technical Field
The invention belongs to the technical field of vinylidene fluoride cracking furnaces, and particularly relates to a large-scale anti-coking vinylidene fluoride cracking furnace.
Background
Vinylidene fluoride (CH 2CF 2), VDF, is one of the important monomers in the fluorine chemical industry and is mainly used for producing polyvinylidene fluoride and fluororubber. The preparation method of the vinylidene fluoride is more, and the vinylidene fluoride is mainly prepared by taking 1-chloro-1,1-difluoroethane (HCFC-142 b or R142 a) as a raw material through pyrolysis in the industry at present. The cracking reaction is usually carried out in a cracking furnace, the cracking reaction is sensitive to temperature, and when the temperature is too low, the conversion rate is low; if the temperature is too high, coking is likely to occur. Generally, in order to improve the conversion rate, the temperature is controlled to be higher, so that a discharge port of the cracking furnace is easy to coke, manual cleaning is needed, and time and labor are wasted.
In the prior art, a novel anti-coking VDF cracking furnace system with the publication number of CN113976046B comprises a cracking furnace, a waste heat recoverer and a quencher, wherein a furnace tube and a zone heating device from top to bottom are arranged in the cracking furnace; the waste heat recoverer comprises a first shell-and-tube heat exchanger and a first horizontal tank body, wherein a first jacket is arranged outside the first horizontal tank body, a discharge port of the cracking furnace is communicated with the first horizontal tank body, a discharge port of the first horizontal tank body is communicated with a tube side feed inlet of the first shell-and-tube heat exchanger, cold materials are introduced into a shell side of the first shell-and-tube heat exchanger, a shell side discharge port of the first shell-and-tube heat exchanger is communicated with a feed inlet of the first jacket, and a discharge port of the first jacket is communicated with the feed inlet of the cracking furnace; the waste heat recoverer is connected with a feed inlet of the quencher, and a discharge outlet of the quencher is connected to the product collecting procedure. The cracking furnace system can reduce coking in the furnace tube of the cracking furnace and the pipeline of the heat exchanger, prolong the cleaning period of the furnace tube of the cracking furnace and the heat exchanger, and simultaneously preheat cold materials through the waste heat recoverer, thereby reducing energy consumption.
Although the novel anti-coking VDF cracking furnace system can reduce coking in the cracking furnace tube and the heat exchanger pipeline, for a large-sized vinylidene fluoride cracking furnace, in the using process, the bonding layer on the inner wall surface of the cracking furnace tube matrix cracks a large amount of vinylidene fluoride, and the cracking furnace tube matrix can pass through a large amount of vinylidene fluoride, so that the cracking furnace tube cannot effectively resist coking.
Disclosure of Invention
The invention aims to provide a large-scale anti-coking vinylidene fluoride cracking furnace, which aims to solve the technical problem that the cracking furnace is easy to coke and achieve the aims of automatically cleaning coking materials, improving the production efficiency and reducing manual operation.
In order to solve the technical problem, the invention provides a large-scale anti-coking vinylidene fluoride cracking furnace, which comprises a cracking furnace body, a waste heat recoverer and a quencher,
the cracking furnace is characterized in that a furnace tube and a partitioned heating device from top to bottom are arranged in the cracking furnace body, a cracking furnace feeding hole is formed in the top of the furnace tube, and a cracking furnace discharging hole is formed in the bottom of the furnace tube;
the discharge port of the cracking furnace is communicated with a waste heat recoverer through a pipeline;
the furnace tube is a vertical furnace tube, a first opening and closing mechanism is arranged at the bottom of the furnace tube, a second opening and closing mechanism is arranged at the position, below the furnace tube, of the cracking furnace body, and an anti-coking mechanism is arranged below the cracking furnace body;
the anti-coking mechanism comprises an integral lifting device and a scraping plate mechanism arranged on the integral lifting device;
the integral lifting device comprises a lifting platform arranged below the cracking furnace body, a pair of driving pieces arranged below the lifting platform and a pair of connecting components, wherein the driving pieces drive the connecting components, and a base is connected below the connecting components;
the connecting assembly comprises a pair of upper frame fixing pieces, a pulley connecting rod circular tube and a pair of upper pull rod side tubes, the upper frame fixing pieces are arranged below the lifting platform, the pulley connecting rod circular tube is hinged between the upper frame fixing pieces, the pair of upper pull rod side tubes are fixedly connected below the pulley connecting rod circular tube, an output connecting cross rod is arranged between the upper pull rod side tubes, and the output connecting cross rod is hinged to an output shaft of the driving piece;
the lower ends of the pair of upper pull rod side tubes are respectively hinged with a lower frame connecting rod, the upper end of the lower frame connecting rod is hinged with the lifting table, the lower end of the lower frame connecting rod is hinged with the base, and the middle part of the lower frame connecting rod is hinged with the upper pull rod side tubes;
the scraper mechanism comprises two cylinders arranged on the lifting platform in a back-to-back mode, a pair of hinged rods arranged on piston rods of the cylinders, and scraper pieces arranged at the tail ends of the hinged rods, and is hinged to the middle section of each hinged rod.
Furthermore, the lower ends of the lower frame connecting rods are connected with a lower connecting cross shaft, connecting bearings are sleeved at two ends of the connecting cross shaft, and the outer sides of the connecting bearings are fixedly connected with bearing seats of the base.
Furthermore, the scraping plate piece comprises a fixed seat arranged on the hinge rod, a scraping plate arranged on the fixed seat and a material containing groove arranged below the scraping plate;
the material containing groove is arranged on the fixed seat.
Further, scrape the flitch and include last scraper blade, middle brush and the lower scraper blade that from top to bottom set gradually, the one end downward sloping of fixing base is kept away from to the last scraper blade, the one end tilt up of fixing base is kept away from to the lower scraper blade.
Furthermore, an inclined plate is arranged on the upper side of the middle hairbrush, and the inclined plate inclines downwards towards one end far away from the fixed hairbrush.
Furthermore, an upper reinforcing scraping piece is arranged at one end of the upper scraping plate, which is far away from the fixed seat;
the upper reinforcing scraper comprises a first upper forked scraper arranged on the upper side of the upper scraper and a first lower forked scraper arranged on the lower side of the upper scraper.
Furthermore, one end of the lower scraper far away from the fixed seat is provided with a lower reinforcing scraper;
the lower reinforcing scraper comprises a second upper forked scraper arranged on the upper side of the lower scraper and a second lower forked scraper arranged on the lower side of the lower scraper.
Furthermore, the first opening and closing mechanism comprises a connecting seat arranged at the bottom of the furnace tube, an external cover arranged at the lower part of the connecting seat and a connecting screw rod, and the connecting screw rod is connected with the external cover and the connecting seat.
Furthermore, the connecting seat is protruded with a sealing ring, the sealing ring is annularly arranged on one side of the external cover, and the external cover is provided with a sealing groove for embedding the sealing ring.
The beneficial effects of the invention are:
1. the staff puts into the pyrolysis furnace with vinylidene fluoride and carries out the schizolysis, after the schizolysis is accomplished, the staff opens the second mechanism that opens and shuts, thereby open the pyrolysis furnace body, open first mechanism that opens and shuts again, drive actuating cylinder, the piston rod shrink of cylinder, with the hinge bar shrink inwards, thereby will scrape the flitch and pack up, outwards stretch out through the driving piece, drive output connection horizontal pole downstream, the output connection horizontal pole drives the upper pull rod limit pipe downstream of both sides, upper pull rod limit pipe stimulates the lower carriage connecting rod downwards, thereby drive the bedstead reduction of lower carriage connecting rod upper end, thereby reduce the height of bedstead, accomplish the reduction of elevating system height. Through driving piece internal contraction, drive the upward movement of output connection horizontal pole, the upper pull rod limit pipe rebound of output connection horizontal pole drive both sides, upper pull rod limit pipe upwards stimulates undercarriage connecting rod, thereby it risees to drive the elevating platform of undercarriage connecting rod upper end, thereby the height of rising elevating platform, stretch into vertical boiler tube with scraper blade spare, drive actuating cylinder again, the piston rod of cylinder is outwards stretched out, outwards expand the hinge bar, thereby will scrape flitch butt to vertical boiler tube inner wall, the lift of rethread elevating platform, carry out the clearance coking to vertical boiler tube, be applicable to large-scale pyrolysis furnace.
2. The material scraping effect is improved through the material scraping of three layers of different functions of the upper scraper, the middle hairbrush and the lower scraper.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a large-scale anti-coking vinylidene fluoride cracking furnace of the present invention;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is an enlarged view of the present invention at B in FIG. 1;
FIG. 4 is an enlarged view of the invention at C in FIG. 3;
fig. 5 is an enlarged view of the invention at D in fig. 3.
In the figure:
1. a cracking furnace body; 11. a waste heat recoverer; 12. a quencher; 13. a feed inlet of the cracking furnace; 14. a discharge hole of the cracking furnace; 15. a furnace tube;
2. a zone heating device;
3. a first opening and closing mechanism; 31. a connecting seat; 311. a seal ring; 32. an outer cover; 321. a sealing groove; 33. connecting a screw rod;
4. a second opening and closing mechanism;
5. an anti-coking mechanism;
6. an integral lifting device; 61. a lifting platform; 62. a drive member; 63. a base;
7. a scraping plate mechanism; 71. a cylinder; 72. a hinged lever; 73. a wiper blade member; 731. a fixed seat; 732. a scraping plate; 733. a material containing groove;
8. a connecting assembly; 81. an upper frame fixing piece; 82. a pulley connecting rod circular tube; 83. an upper pull rod side tube; 84. the output is connected with the cross rod; 85. a lower frame connecting rod;
9. connecting a cross shaft; 91. connecting a bearing; 92. a bearing seat;
10. an upper scraper plate; 101. a middle brush; 1011. an inclined plate; 102. a lower scraper;
1001. an upper reinforcing scraper; 10011. a first upper bifurcated flight; 10012. a first lower bifurcated flight;
1002. a lower reinforcing scraper; 10021. a second upper bifurcated flight; 10022. a second lower bifurcated flight.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 5, a large-scale coking-resistant vinylidene fluoride cracking furnace comprises a cracking furnace body 1, a waste heat recoverer 11 and a quencher 12, wherein a furnace tube 15 and a zone heating device 2 from top to bottom are arranged in the cracking furnace body 1, a cracking furnace feed inlet 13 is arranged at the top of the furnace tube 15, a cracking furnace discharge outlet 14 is arranged at the bottom of the furnace tube 15, vinylidene fluoride is put into the cracking furnace body 1 through the cracking furnace feed inlet 13 for cracking, and finally, materials are discharged through the cracking furnace discharge outlet 14 after cracking is completed. Wherein, the discharge port 14 of the cracking furnace is communicated with the waste heat recoverer 11 through a pipeline.
As shown in fig. 1 to 5, the furnace tube is a vertical furnace tube, a first opening and closing mechanism 3 is disposed at the bottom of the vertical furnace tube, a second opening and closing mechanism 4 is disposed at the lower part of the furnace tube of the cracking furnace body 1, and an anti-coking mechanism 5 is disposed below the cracking furnace body 1. After the pyrolysis of the vinylidene fluoride is finished, a worker opens the second opening and closing mechanism 4 on the pyrolysis furnace body 1, opens the first opening and closing mechanism 3 again, and cleans the coking part in the vertical furnace tube through the coking-resistant mechanism 5.
As shown in fig. 1 to 5, the anti-coking mechanism 5 includes an integral lifting device 6 and a scraper mechanism 7 provided on the integral lifting device 6. The integral lifting device 6 comprises a lifting platform 61 arranged below the cracking furnace body 1, a pair of driving pieces 62 arranged below the lifting platform 61 and a pair of connecting components 8, wherein the driving pieces 62 drive the connecting components 8, and a base 63 is connected below the connecting components 8; the connecting assembly 8 comprises a pair of upper frame fixing plates 81, a pulley connecting rod circular tube 82 and a pair of upper pull rod side tubes 83, the pulley connecting rod circular tube 82 is hinged between the upper frame fixing plates 81, the pair of upper pull rod side tubes 83 are fixedly connected below the pulley connecting rod circular tube 82, an output connecting cross rod 84 is arranged between the upper pull rod side tubes 83, and the output connecting cross rod 84 is hinged to an output shaft of the driving part 62; the lower ends of the pair of upper pull rod side tubes 83 are respectively hinged with a lower frame connecting rod 85, the upper end of the lower frame connecting rod 85 is hinged with the lifting platform 61, the lower end of the lower frame connecting rod 85 is hinged with the base 63, and the middle part of the lower frame connecting rod 85 is hinged with the upper pull rod side tubes 83.
The scraping mechanism 7 comprises two cylinders 71 arranged on the lifting platform 61 in an opposite manner, a pair of hinged rods 72 arranged on piston rods of the cylinders 71, and a scraping piece 73 arranged at the tail ends of the hinged rods 72, wherein the middle sections of the hinged rods 72 are hinged.
In this embodiment, the same lower connecting cross shaft 9 is connected to the lower ends of the pair of lower frame connecting rods 85, connecting bearings 91 are fitted to both ends of the connecting cross shaft 9, and bearing blocks 92 connected to the base 63 are fixedly connected to the outer sides of the connecting bearings 91. The base 63 and the lower frame connecting rod 85 are connected by the connecting bearing 91, so that the connection stability between the base 63 and the lower frame connecting rod 85 is improved.
As shown in fig. 1 to 5, the scraping plate member 73 includes a fixing seat 731 disposed on the hinge rod 72, a scraping plate 732 disposed on the fixing seat 731, and a material receiving groove 733 disposed below the scraping plate 732; the material containing groove 733 is arranged on the fixed seat 731. The coking materials in the vertical furnace pipe are scraped by the scraper plate 732, and the scraped materials fall into the containing trough 733 for storage.
The scraping plate 732 includes an upper scraping plate 10, a middle brush 101, and a lower scraping plate 102 sequentially arranged from top to bottom, wherein an end of the upper scraping plate 10 away from the fixing seat 731 is inclined downward, and an end of the lower scraping plate 102 away from the fixing seat 731 is inclined upward. Through the preliminary scraping of upper scraper 10, brushing the material of coking once more through middle brush 101, the material of coking is brushed by the brush, and the material that is brushed by middle brush 101 is scraped once more to rethread scraper blade 102 to reach the purpose of getting rid of the coking material twice.
In this embodiment, the upper side of the middle brush 101 is provided with the inclined plate 1011, and the inclined plate 1011 inclines downwards towards the end far away from the fixing part, so that the material scraped by the upper scraper 10 falls into the storage trough 733 along the inclined plate 1011, and the material is not easy to accumulate on the middle brush 101.
As shown in fig. 1 to 5, an end of the upper scraper 10 away from the fixing seat 731 is provided with an upper reinforcing scraper 1001; the upper reinforcing blade 1001 includes a first upper bifurcated blade 10011 provided on the upper side of the upper blade 10 and a first lower bifurcated blade 10012 provided on the lower side of the upper blade 10. One end of the lower scraper blade 102 far away from the fixed seat 731 is provided with a lower reinforcing scraper 1002; the lower reinforcing scraper 1002 includes a second upper bifurcated scraper 10021 provided on the upper side of the lower scraper 102 and a second lower bifurcated scraper 10022 provided on the lower side of the lower scraper 102. Thereby make scraper blade 10 and link plate all be three layer construction down, promote the effect of scraping the material.
As shown in fig. 1 to 5, the first opening and closing mechanism 3 includes a connecting seat 31 disposed at the bottom of the vertical furnace tube, an outer cover 32 disposed at the lower portion of the connecting seat 31, and a connecting screw 33, and the connecting screw 33 connects the outer cover 32 and the connecting seat 31. The outer cap 32 is fixed to the connection holder 31 by the connection screw 33, and the sealability between the outer cap 32 and the connection holder 31 is improved.
In this embodiment, the connecting seat 31 is protruded with a sealing ring 311, the sealing ring 311 is annularly disposed on one side of the connecting seat 31 facing the outer cover 32, the outer cover 32 is provided with a sealing groove 321 for the sealing ring 311 to be embedded, and the sealing performance between the connecting seat 31 and the outer cover 32 is improved by the sealing ring 311 being embedded in the sealing groove 321.
In summary, the following steps: the staff puts into the pyrolysis furnace with vinylidene fluoride and carries out the schizolysis, after the schizolysis is accomplished, the staff opens the second mechanism 4 that opens and shuts, thereby open pyrolysis furnace body 1, open first mechanism 3 that opens and shuts again, drive actuating cylinder 71, the piston rod shrink of cylinder 71, with the hinge rod 72 shrink inwards, thereby will scrape the flitch 732 and pack up, outwards stretch out through driving piece 62, drive output connection horizontal pole 84 downstream, output connection horizontal pole 84 drives the last pull rod limit pipe 83 downstream of both sides, go up pull rod limit pipe 83 and stimulate undercarriage connecting rod 85 downwards, thereby drive the reduction of undercarriage connecting rod 85 upper end, thereby reduce the height of bedstead, accomplish the reduction of elevating system height. Through inside shrink of driving piece 62, drive output connection horizontal pole 84 upward movement, output connection horizontal pole 84 drives the upper pull rod limit pipe 83 rebound of both sides, upper pull rod limit pipe 83 upwards stimulates undercarriage connecting rod 85, thereby it risees to drive elevating platform 61 of undercarriage connecting rod 85 upper end, thereby the height of elevating platform 61, will scrape plate 73 and stretch into vertical boiler tube, drive actuating cylinder 71 again, the piston rod of cylinder 71 outwards stretches out, outwards expand hinge rod 72, thereby will scrape flitch 732 butt to vertical boiler tube inner wall, the lift of rethread elevating platform 61, clear up the coking to vertical boiler tube, be applicable to large-scale pyrolysis furnace. The material scraping effect is improved by three layers of material scraping with different functions of the upper scraper 10, the middle hairbrush 101 and the lower scraper 102.
All the components selected in the application are common standard components or components known to those skilled in the art, and the structure and principle of the components can be known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A large-scale coking-resistant vinylidene fluoride cracking furnace comprises a cracking furnace body (1), a waste heat recoverer (11) and a quencher (12), and is characterized in that,
a furnace tube (15) and a partitioned heating device (2) from top to bottom are arranged in the cracking furnace body (1), a cracking furnace feeding hole (13) is formed in the top of the furnace tube (15), and a cracking furnace discharging hole (14) is formed in the bottom of the furnace tube (15);
the discharge hole (14) of the cracking furnace is communicated with the waste heat recoverer (11) through a pipeline;
the furnace tube (15) is a vertical furnace tube, a first opening and closing mechanism (3) is arranged at the bottom of the furnace tube (15), a second opening and closing mechanism (4) is arranged at the position, below the furnace tube (15), of the cracking furnace body (1), and an anti-coking mechanism (5) is arranged below the cracking furnace body (1);
the anti-coking mechanism (5) comprises an integral lifting device (6) and a scraper mechanism (7) arranged on the integral lifting device (6);
the integral lifting device (6) comprises a lifting platform (61) arranged below the cracking furnace body (1), a pair of driving pieces (62) arranged below the lifting platform (61) and a pair of connecting components (8), wherein the driving pieces (62) drive the connecting components (8), and a base (63) is connected below the connecting components (8);
the connecting assembly (8) comprises a pair of upper frame fixing pieces (81), a pulley connecting rod circular tube (82) and a pair of upper pull rod side tubes (83), the upper frame fixing pieces (81), the pulley connecting rod circular tube (82) and the upper pull rod side tubes (83) are arranged below the lifting platform (61), the pulley connecting rod circular tube (82) is hinged between the upper frame fixing pieces (81), the pair of upper pull rod side tubes (83) are fixedly connected below the pulley connecting rod circular tube (82), an output connecting cross rod (84) is arranged between the upper pull rod side tubes (83), and the output connecting cross rod (84) is hinged to an output shaft of the driving piece (62);
the lower ends of the pair of upper pull rod side tubes (83) are respectively hinged with a lower frame connecting rod (85), the upper ends of the lower frame connecting rods (85) are hinged with the lifting table (61), the lower ends of the lower frame connecting rods (85) are hinged with the base (63), and the middle parts of the lower frame connecting rods (85) are hinged with the upper pull rod side tubes (83);
the scraper mechanism (7) comprises two cylinders (71) which are arranged on the lifting platform (61) in a back-to-back mode, a pair of hinged rods (72) which are arranged on piston rods of the cylinders (71) and scraper pieces (73) which are arranged at the tail ends of the hinged rods (72), and the middle sections of the hinged rods (72) are hinged and connected.
2. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 1,
the lower ends of the lower frame connecting rods (85) are connected with the same lower connecting cross shaft (9), the two ends of the connecting cross shaft (9) are sleeved with connecting bearings (91), and the outer sides of the connecting bearings (91) are fixedly connected with bearing seats (92) of the base (63).
3. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 2,
the scraping plate component (73) comprises a fixed seat (731) arranged on the hinge rod (72), a scraping plate (732) arranged on the fixed seat (731), and a containing groove (733) arranged below the scraping plate (732);
the containing trough (733) is arranged on the fixed seat (731).
4. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 3,
the scraping plate (732) comprises an upper scraping plate (10), a middle hairbrush (101) and a lower scraping plate (102) which are sequentially arranged from top to bottom, one end, far away from the fixing seat (731), of the upper scraping plate (10) inclines downwards, and one end, far away from the fixing seat (731), of the lower scraping plate (102) inclines upwards.
5. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 4,
the upper side of the middle hairbrush (101) is provided with an inclined plate (1011), and the inclined plate (1011) inclines downwards towards one end far away from the fixed hairbrush.
6. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 5,
an upper reinforcing scraper piece (1001) is arranged at one end of the upper scraper (10) far away from the fixed seat (731);
the upper reinforcing scraper (1001) includes a first upper bifurcated scraper (10011) provided on the upper side of the upper scraper (10) and a first lower bifurcated scraper (10012) provided on the lower side of the upper scraper (10).
7. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 6,
one end of the lower scraper (102) far away from the fixed seat (731) is provided with a lower reinforcing scraper (1002);
the lower reinforcing scraper (1002) includes a second upper bifurcated scraper (10021) provided on the upper side of the lower scraper (102) and a second lower bifurcated scraper (10022) provided on the lower side of the lower scraper (102).
8. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 7,
the first opening and closing mechanism (3) comprises a connecting seat (31) arranged at the bottom of the furnace tube (15), an external cover (32) arranged at the lower part of the connecting seat (31) and a connecting screw rod (33), and the connecting screw rod (33) is connected with the external cover (32) and the connecting seat (31).
9. The large-scale anti-coking vinylidene fluoride cracking furnace of claim 8,
connecting seat (31) arch has sealing ring (311), connecting seat (31) orientation is located to sealing ring (311) ring outside lid (32) one side, outside lid (32) are provided with seal groove (321) that supply sealing ring (311) embedding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211645786.3A CN115634627A (en) | 2022-12-21 | 2022-12-21 | Large-scale coking-resistant vinylidene fluoride cracking furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211645786.3A CN115634627A (en) | 2022-12-21 | 2022-12-21 | Large-scale coking-resistant vinylidene fluoride cracking furnace |
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|---|---|
| CN115634627A true CN115634627A (en) | 2023-01-24 |
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|---|---|---|---|
| CN202211645786.3A Pending CN115634627A (en) | 2022-12-21 | 2022-12-21 | Large-scale coking-resistant vinylidene fluoride cracking furnace |
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| CN (1) | CN115634627A (en) |
Citations (5)
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| CN209109762U (en) * | 2018-08-30 | 2019-07-16 | 新金城智能装备有限公司 | A kind of kitchen chimney flue cleaning plant convenient to use |
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| CN215570531U (en) * | 2021-09-07 | 2022-01-18 | 铁法煤业(集团)有限责任公司后勤服务保障中心 | Quick slag removal device for heating boiler |
| CN113976046A (en) * | 2021-10-22 | 2022-01-28 | 江苏格兰环境科技有限公司 | Novel anti-coking VDF cracking furnace system and using method thereof |
| CN114210295A (en) * | 2021-12-31 | 2022-03-22 | 江苏格兰环境科技有限公司 | Intelligent control method for vinylidene fluoride cracking furnace |
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| CN209109762U (en) * | 2018-08-30 | 2019-07-16 | 新金城智能装备有限公司 | A kind of kitchen chimney flue cleaning plant convenient to use |
| CN111871980A (en) * | 2020-07-20 | 2020-11-03 | 长沙亚欣电器技术服务股份有限公司 | Vertical pipeline cleaning equipment |
| CN215570531U (en) * | 2021-09-07 | 2022-01-18 | 铁法煤业(集团)有限责任公司后勤服务保障中心 | Quick slag removal device for heating boiler |
| CN113976046A (en) * | 2021-10-22 | 2022-01-28 | 江苏格兰环境科技有限公司 | Novel anti-coking VDF cracking furnace system and using method thereof |
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