CN217110460U - Acetic acid cracking furnace with adjustable furnace tube - Google Patents
Acetic acid cracking furnace with adjustable furnace tube Download PDFInfo
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- CN217110460U CN217110460U CN202220319359.5U CN202220319359U CN217110460U CN 217110460 U CN217110460 U CN 217110460U CN 202220319359 U CN202220319359 U CN 202220319359U CN 217110460 U CN217110460 U CN 217110460U
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- boiler tube
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Abstract
The utility model relates to an acetic acid schizolysis technical field specifically is an acetic acid pyrolysis furnace with adjustable boiler tube, including the shell body, the inside of shell body is provided with the baffle, and the top of baffle is provided with the preheating cabinet, and the one end of preheating cabinet is connected with the inlet pipe, and the other end of preheating cabinet is connected with the connecting pipe, and the connecting pipe runs through baffle and connecting pipe and is connected with adjustable cracking mechanism. In acetic acid steam pours into the equipment into from the inlet pipe, enter into the inside of preheating cabinet earlier and preheat, the acetic acid steam after preheating pours into the inside of last mounting disc into through the connecting pipe, then flow in the inside of boiler tube, nozzle jet flame heats the boiler tube, acetic acid steam pyrolysis of being heated, motor start drives the pivot and rotates, the toothed disc rotates thereupon and drives the boiler tube through the ring gear and rotate, and then make the position of the face of a fire of boiler tube change, the boiler tube is heated more evenly, local high-temperature region coking has been avoided, the condition of boiler tube bending deformation takes place, the life of equipment has been prolonged.
Description
Technical Field
The utility model relates to an acetic acid cracking technology field specifically is an acetic acid cracking furnace with adjustable boiler tube.
Background
The main products of acetic acid dehydration cracking under high temperature condition are ketene, water and so on, the process for preparing ketene is that firstly acetic acid is prepared into acetic acid aqueous solution with about 92%, then the prepared acetic acid aqueous solution is vaporized, then acetic acid steam is fed into a furnace tube of a cracking furnace, then the furnace tube is heated to make acetic acid steam cracking into ketene, water and so on, and then the ketene and water and so on are fed into the back section for separation and cooling.
However, in the prior art, when the burner in the cracking furnace heats the furnace tube, the heating position is fixed, and the heated places of the furnace tube are concentrated and fixed, so that the temperature of the fire-facing surface is high and the temperature of the fire-facing surface is low when the same furnace tube is subjected to double-sided radiation heat transfer, which causes the reduction of the actual effective heat exchange area, uneven heating of acetic acid vapor, uneven heating of the furnace tube, and as a result, the high-temperature region is easy to coke, the furnace tube is easy to bend and deform, and the service life of the equipment is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an acetic acid pyrolysis furnace with adjustable boiler tube to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an acetic acid pyrolysis furnace with adjustable boiler tube, including the shell body, the inside of shell body is provided with the baffle, the top of baffle is provided with the preheating cabinet, the one end of preheating cabinet is connected with the inlet pipe, the other end of preheating cabinet is connected with the connecting pipe, the connecting pipe runs through baffle and connecting pipe and is connected with adjustable cracking mechanism, the installation piece is installed to shell body lower extreme inner wall, install the nozzle on the installation piece lateral wall.
Preferably, the cracking mechanism comprises an upper mounting disc and a lower mounting disc, a plurality of groups of butt joint holes are formed in the upper mounting disc and the lower mounting disc, the number of each group of butt joint holes is two, and a sealing ring is arranged in each butt joint hole.
Preferably, the upper mounting plate is provided with an upper butt joint hole, the lower mounting plate is provided with a lower butt joint hole, the upper butt joint hole and the lower butt joint hole are in one-to-one correspondence, two upper butt joint holes in each group of upper butt joint holes are communicated, two lower butt joint holes in each group of lower butt joint holes are not communicated, and the lower butt joint holes of adjacent groups are communicated.
Preferably, a furnace tube is arranged between the upper mounting disc and the lower mounting disc, a spoiler is arranged on the inner wall of the furnace tube, two ends of the furnace tube are connected with butt joints, the butt joints are inserted into the butt joint holes, a sealing groove is formed in each butt joint, and the sealing ring is embedded into the sealing groove.
Preferably, the furnace tube is provided with a toothed ring, the partition plate is provided with a motor, the output end of the motor is connected with a rotating shaft, the end part of the rotating shaft is connected with a gear disc, and the gear disc is meshed with the toothed ring.
Preferably, the connecting pipe is communicated with the upper butt joint hole, the discharging pipe is installed on the side wall of the lower mounting disc, and the discharging pipe is communicated with the lower butt joint hole.
Compared with the prior art, the beneficial effects of the utility model are that: in acetic acid steam pours into the equipment into from the inlet pipe, enter into the inside of preheating cabinet earlier and preheat, the acetic acid steam after preheating pours into the inside of last mounting disc into through the connecting pipe, then flow in the inside of boiler tube, nozzle jet flame heats the boiler tube, acetic acid steam pyrolysis of being heated, motor start drives the pivot and rotates, the toothed disc rotates thereupon and drives the boiler tube through the ring gear and rotate, and then make the position of the face of a fire of boiler tube change, the boiler tube is heated more evenly, local high-temperature region coking has been avoided, the condition of boiler tube bending deformation takes place, the life of equipment has been prolonged.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention;
fig. 2 is an explosion diagram of the cracking mechanism of the present invention.
In the figure: the device comprises an outer shell 1, a partition plate 2, a feeding pipe 3, a preheating box 4, a connecting pipe 5, an upper mounting plate 6, a lower mounting plate 7, a butt joint hole 8, a furnace pipe 9, a butt joint 10, a toothed ring 11, a motor 12, a rotating shaft 13, a gear plate 14, a mounting block 15, a burner 16 and a discharging pipe 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: an acetic acid cracking furnace with an adjustable furnace tube comprises an outer shell 1, a partition plate 2 is arranged inside the outer shell 1, the partition plate 2 divides the outer shell 1 into an upper preheating chamber and a lower cracking chamber, a preheating box 4 is arranged above the partition plate 2, the preheating box 4 is connected with a return pipe, the return pipe can introduce high-temperature flue gas of the cracking chamber into the preheating box 4 to provide heat for the preheating box 4, the heat utilization rate is improved, one end of the preheating box 4 is connected with a feed pipe 3, the other end of the preheating box 4 is connected with a connecting pipe 5, the connecting pipe 5 penetrates through the partition plate 2, the connecting pipe 5 is connected with an adjustable cracking mechanism, the cracking mechanism comprises an upper mounting plate 6 and a lower mounting plate 7, a plurality of pairs of butt joint holes 8 are arranged on the upper mounting plate 6 and the lower mounting plate 7, the number of each group of butt joint holes 8 is two, a sealing ring is arranged inside the butt joint holes 8, the butt joint holes 8 arranged on the upper mounting plate 6 are upper butt joint holes, the butt joint hole 8 that sets up on the lower mounting disc 7 is butt joint hole down, go up butt joint hole and lower butt joint hole one-to-one, two in the butt joint hole are linked together on every group, two in the butt joint hole under every group are not communicated under the butt joint hole, the lower butt joint hole of adjacent group is linked together, it is provided with boiler tube 9 to go up between mounting disc 6 and the lower mounting disc 7, the inner wall of boiler tube 9 is provided with the spoiler, can make acetic acid steam itself take place to stir when flowing, make it is more even to be heated, the both ends of boiler tube 9 are connected with butt joint 10, butt joint 10 pegs graft in the inside of butt joint hole 8, the seal groove has been seted up on butt joint 10, the sealing ring imbeds in the seal groove, butt joint 10 and butt joint hole 8 closely laminate, and butt joint 10 and butt joint hole 8 are for rotating the connection, the acetic acid steam flow channel that boiler tube 9 and butt joint hole 8 constitute is the S-shaped route. The furnace tube 9 is provided with a toothed ring 11, the clapboard 2 is provided with a motor 12, the output end of the motor 12 is connected with a rotating shaft 13, the end part of the rotating shaft 13 is connected with a gear disc 14, and the gear disc 14 is meshed and connected with the toothed ring 11. The connecting pipe 5 is communicated with the upper butt joint hole, the side wall of the lower mounting disc 7 is provided with a discharging pipe 17, and the discharging pipe 17 is communicated with the lower butt joint hole. The inner wall of the lower end of the outer shell 1 is provided with an installation block 15, the side wall of the installation block 15 is provided with a burner 16, the burner 16 is annularly provided with a plurality of groups, and when the burner 16 is opened, flame is sprayed on the fire facing surface of the furnace tube 9.
The working principle is as follows: acetic acid steam pours into the equipment into from inlet pipe 3 in, enter into the inside of preheating cabinet 4 earlier and preheat, the acetic acid steam after preheating pours into the inside of last mounting disc 6 into through connecting pipe 5, then flow in the inside of boiler tube 9, nozzle 16 sprays flame and heats boiler tube 9, acetic acid steam pyrolysis, motor 12 starts and drives pivot 13 and rotate, toothed disc 14 rotates along with it and drives boiler tube 9 through ring gear 11 and rotate, and then make boiler tube 9 face position to the fire change, the boiler tube is heated more evenly, local high-temperature region has been avoided, the condition of coking boiler tube bending deformation takes place, the life of equipment has been prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an acetic acid pyrolysis furnace with adjustable boiler tube, includes shell body (1), its characterized in that: the inside of shell body (1) is provided with baffle (2), the top of baffle (2) is provided with preheating cabinet (4), the one end of preheating cabinet (4) is connected with inlet pipe (3), the other end of preheating cabinet (4) is connected with connecting pipe (5), connecting pipe (5) run through baffle (2) and connecting pipe (5) and are connected with adjustable schizolysis mechanism, installation piece (15) are installed to shell body (1) lower extreme inner wall, install nozzle (16) on installation piece (15) lateral wall.
2. The furnace tube adjustable acetic acid cracking furnace of claim 1, wherein: cracking mechanism is provided with a plurality of groups to connecting hole (8) including last mounting disc (6) and lower mounting disc (7) on going up mounting disc (6) and lower mounting disc (7), and the quantity in every group butt joint hole (8) is two, and the inside in butt joint hole (8) is provided with the sealing ring.
3. The furnace tube adjustable acetic acid cracking furnace of claim 2, wherein: the upper mounting disc (6) is provided with an upper butt joint hole (8), the lower mounting disc (7) is provided with a lower butt joint hole (8), the upper butt joint hole and the lower butt joint hole are in one-to-one correspondence, two upper butt joint holes in the butt joint holes in each group are communicated, two lower butt joint holes in the butt joint holes in each group are not communicated, and the lower butt joint holes in adjacent groups are communicated.
4. The furnace tube adjustable acetic acid cracking furnace of claim 2, wherein: go up mounting disc (6) and be provided with boiler tube (9) down between mounting disc (7), the inner wall of boiler tube (9) is provided with the spoiler, and the both ends of boiler tube (9) are connected with butt joint (10), and inside at butt joint hole (8) is pegged graft to butt joint (10), has seted up the seal groove on butt joint (10), and the sealing ring imbeds in the seal groove.
5. The furnace tube adjustable acetic acid cracking furnace of claim 4, wherein: the furnace tube (9) is provided with a toothed ring (11), the partition plate (2) is provided with a motor (12), the output end of the motor (12) is connected with a rotating shaft (13), the end part of the rotating shaft (13) is connected with a gear disc (14), and the gear disc (14) is meshed with the toothed ring (11).
6. The furnace tube adjustable acetic acid cracking furnace of claim 1, wherein: the connecting pipe (5) is communicated with the upper butt joint hole, a discharging pipe (17) is installed on the side wall of the lower mounting disc (7), and the discharging pipe (17) is communicated with the lower butt joint hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220319359.5U CN217110460U (en) | 2022-02-17 | 2022-02-17 | Acetic acid cracking furnace with adjustable furnace tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220319359.5U CN217110460U (en) | 2022-02-17 | 2022-02-17 | Acetic acid cracking furnace with adjustable furnace tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217110460U true CN217110460U (en) | 2022-08-02 |
Family
ID=82598411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220319359.5U Active CN217110460U (en) | 2022-02-17 | 2022-02-17 | Acetic acid cracking furnace with adjustable furnace tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217110460U (en) |
-
2022
- 2022-02-17 CN CN202220319359.5U patent/CN217110460U/en active Active
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