CN116474679A - Method and equipment for producing isobutene - Google Patents
Method and equipment for producing isobutene Download PDFInfo
- Publication number
- CN116474679A CN116474679A CN202310470512.3A CN202310470512A CN116474679A CN 116474679 A CN116474679 A CN 116474679A CN 202310470512 A CN202310470512 A CN 202310470512A CN 116474679 A CN116474679 A CN 116474679A
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- Prior art keywords
- catalyst
- reaction tower
- isobutene
- throwing
- impeller
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- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 122
- 238000006243 chemical reaction Methods 0.000 claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 claims abstract description 45
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000001282 iso-butane Substances 0.000 claims abstract description 21
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 24
- 238000011084 recovery Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 238000004939 coking Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 17
- 238000012824 chemical production Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 230000009471 action Effects 0.000 description 9
- 239000001273 butane Substances 0.000 description 6
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006266 etherification reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000004810 2-methylpropylene group Chemical group [H]C([H])([H])C([H])(C([H])([H])[*:2])C([H])([H])[*:1] 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000003254 gasoline additive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/08—Alkenes with four carbon atoms
- C07C11/09—Isobutene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of chemical production, and discloses a production method and production equipment of isobutene, wherein the production method comprises the following specific steps: s1, putting a catalyst into a reaction tower by using a feeding mechanism, S2, carrying out throwing-collecting-re-throwing circulation on the catalyst in the reaction tower by using a circulating mechanism, and S3, replacing the catalyst in the reaction tower by using a replacing mechanism; the catalyst drops on the impeller through throwing the material mechanism, make the impeller drive the commentaries on classics and throw the dish rotation, with the catalyst that changes on throwing the dish throw, the catalyst that falls in lower extreme removal magazine, rack rotation drives it and rises, the inclined plane lug makes the removal magazine slope, its internal catalyst is emptyd on the deflector, make the catalyst drop on the impeller, remove the magazine in the reaction tower bottom in the time simultaneously, catch the catalyst that falls, under the catalyst carrier throw motion, increase isobutane and the area of contact of catalyst, improve the production efficiency of isobutene, the problem that prior art influences production efficiency is solved as far as possible.
Description
Technical Field
The invention relates to the technical field of chemical production, in particular to a production method and production equipment of isobutene.
Background
2-methyl propylene, also called isobutene, is an organic compound with a chemical formula of C4H8, is colorless gas at normal temperature and normal pressure, is insoluble in water, is easily dissolved in most organic solvents such as ethanol, diethyl ether and sulfuric acid, is mainly used for producing polyisobutene, isoprene rubber, isobutene rubber and butyl rubber, and is also used for preparing catalysts, antioxidants, pesticides, medicines, fragrances, gasoline additives, lubricating oil and the like.
The existing process for producing isobutene mainly comprises a sulfuric acid extraction method, a methanol-etherification cracking method, a hydration-dehydration method, a butane dehydrogenation method, a molecular screening method and the like, wherein the methanol-etherification cracking method is a production method which is currently mainstream and is used for producing high-purity isobutene, but the method has the defect of more side reactions, so that a large amount of separation equipment is required in the production process, the conditions of temperature and the like required by the reaction are higher, the production flow is complex, the production efficiency and the energy consumption are higher, and the energy efficiency is poorer.
The butane dehydrogenation method is a method for preparing olefin by dehydrogenating alkane, the method converts low-cost alkane into olefin with high added value, hydrogen generated by dehydrogenation can be provided for a refinery to use, dependence of olefin production on a cracking process is reduced, the comprehensive utilization level of oil gas resources is improved, the method is an important way for comprehensively utilizing carbon four hydrocarbon resources, when isobutene is produced, isobutene is produced by taking isobutane as a raw material through catalytic dehydrogenation under the conditions of high temperature and low pressure, the reaction formula is C4H10 (catalyst), namely C4H28+H2, the production efficiency is directly related to the utilization rate of the catalyst, isobutane is in contact with the surface of the catalyst, and the isobutane can be rapidly catalyzed, but in the reaction process, the catalyst is easy to coke, catalytic coking mainly occurs on the surface of the catalyst (metal, metal oxide or sulfide), the catalyst is in catalytic reaction with hydrocarbon at high temperature, the process of generating coking products is influenced, and the contact of the isobutane with the catalyst is influenced after the catalyst is coked.
At present, in the existing butane dehydrogenation technology, usually, isobutane gas is introduced into a dehydrogenation tower filled with a catalyst, wherein the isobutane gas is converted into isobutene under the action of the catalyst, however, the catalyst in the dehydrogenation tower is easy to accumulate and coke under the high-temperature condition, so that the contact area of the isobutane gas and the catalyst is reduced, and the production efficiency is influenced; therefore, the existing demand is not met, and a production method and production equipment of isobutene are provided.
Disclosure of Invention
The invention provides a production method and production equipment of isobutene, which have the beneficial effects of solving the problems that in the prior art, the existing butane dehydrogenation technology is adopted, generally, isobutane gas is introduced into a dehydrogenation tower filled with a catalyst, the isobutane gas is converted into isobutene under the action of the catalyst, however, the catalyst in the dehydrogenation tower is easy to accumulate and coke under the high temperature condition, the contact area of the isobutane gas and the catalyst is reduced, and the production efficiency is affected.
The invention provides the following technical scheme: the production method of isobutene comprises the following specific steps:
s1, adding a catalyst: the catalyst is gradually and uniformly thrown into a reaction tower for catalytic dehydrogenation by using a feeding mechanism.
S2, dynamic circulation of a catalyst: and the catalyst in the reaction tower is subjected to the circulation steps of throwing, collecting and re-throwing through a circulation mechanism, so that the gap space among catalyst particles is increased, the exposed surface area of the catalyst is increased, and the raw material isobutane gas is fully contacted with the catalyst.
S3, replacing a catalyst: the catalyst in the reaction tower is replaced through the replacement mechanism, so that the catalyst is prevented from being used for a long time, and coking occurs on the surface of the catalyst.
As an alternative to the production method of isobutene described in the present invention, there is provided a process wherein: before S1, introducing isobutane gas serving as a production raw material into the reaction tower, after S3, guiding a product generated by catalysis out of the reaction tower, and separating the gas to obtain the isobutene serving as a required product.
As an alternative to the production facility of isobutene according to the invention, there is provided: the feeding mechanism is arranged on the outer side of the reaction tower and comprises a feed box, a flip is hinged to the side part of the feed box, and a handle is arranged on the outer side of the flip.
As an alternative to the production facility of isobutene according to the invention, there is provided: the side part of the reaction tower is provided with a first hollow plate, the outer side of the first hollow plate is provided with a second hollow plate, the outer side of the second hollow plate is provided with an inserting block and a sliding block, the inserting block is inserted into the side part of the first hollow plate, the outer side of the first hollow plate is provided with a sliding rail, the sliding rail is annular, and the sliding block is inserted into the sliding rail in a sliding manner.
As an alternative to the production facility of isobutene according to the invention, there is provided: the rotary shaft is rotatably arranged in the feed box and connected with the second hollowed-out plate, a first motor is arranged on the outer side of the feed box, and an output shaft of the first motor is in transmission connection with the rotary shaft.
As an alternative to the production facility of isobutene according to the invention, there is provided: the circulating mechanism is arranged in the reaction tower and comprises an impeller, the impeller is rotationally sleeved at the end part of the first support rod, the first support rod is connected with the inner wall of the reaction tower, a first conical gear is inserted into the inner side of the impeller, a rotating and throwing disc is arranged in the reaction tower and is rotationally arranged at the end part of the second support rod, the second support rod is connected with the inner wall of the reaction tower, a second conical gear is arranged at the outer side of the rotating and throwing disc, and the second conical gear is meshed with the first conical gear.
As an alternative to the production facility of isobutene according to the invention, there is provided: the circulating mechanism further comprises racks, fixed gears are rotatably arranged on the inner side of the reaction tower, the number of the fixed gears is set to be a plurality, the racks are meshed with the fixed gears, a second motor is arranged on the outer side of the reaction tower, and an output shaft of the second motor is in transmission connection with one of the fixed gears.
As an alternative to the production facility of isobutene according to the invention, there is provided: the side part of the rack is provided with two movable material boxes, the side part of the rack is provided with a connecting block, the outer side of the connecting block is provided with a torsion spring, the torsion spring is connected with the movable material boxes, the inner side of the reaction tower is provided with an inclined plane lug, the inclined plane lug is arranged at the upper end of the reaction tower, one of them remove the magazine with during inclined plane lug contact, another remove the magazine is located the bottom of reaction tower, install the deflector in the reaction tower, the deflector slope sets up in the upper end remove the magazine with between the impeller, and be close to one side height of impeller is low.
As an alternative to the production facility of isobutene according to the invention, there is provided: the replacement mechanism is arranged on the inner side of the reaction tower and comprises a lifting plate, a discharging pipeline is arranged on the side portion of the reaction tower, the discharging pipeline is arranged on the lower side of the lifting plate, a telescopic piece is arranged on the inner side of the reaction tower, a connecting rod is arranged at the telescopic end of the telescopic piece, and the connecting rod is connected with the lifting plate.
As an alternative to the production facility of isobutene according to the invention, there is provided: the recovery box is arranged on the outer side of the reaction tower and communicated with the discharging pipeline, and the side part of the recovery box is connected with an electromagnetic valve.
The invention has the following beneficial effects:
1. according to the isobutene production method and the isobutene production equipment, the catalyst is thrown into the reaction tower through the arrangement of the feeding mechanism, the catalyst falls on the impeller, the impeller rotates, the rotating impeller drives the rotating throwing disc to rotate, the catalyst falling on the rotating throwing disc is thrown into the reaction tower, the scattered catalyst rolls into the movable material box at the lower end, the movable material box filled with the catalyst rises through the rotation of the rack, the movable material box filled with the catalyst inclines through the arrangement of the inclined plane lug, the catalyst falls on the guide plate, the catalyst falls on the impeller again through the guiding effect of the guide plate, meanwhile, the empty movable material box is positioned at the bottom of the reaction tower and is used for catching the scattered catalyst, under the circulating action of continuous falling and throwing of the catalyst, the gap between the catalyst is increased, and the catalyst is replaced through the replacement mechanism, so that the contact area between the raw material isobutane and the catalyst is effectively increased, the isobutene production efficiency is improved, and the existing butane dehydrogenation technology is influenced as far as possible.
2. According to the production method and the production equipment of the isobutene, the catalyst is filled in the feed box, the first motor drives the second hollow plate to rotate, so that the holes in the second hollow plate are communicated with the holes in the first hollow plate, the catalyst in the feed box falls into the reaction tower, the exposure degree of the holes in the first hollow plate is controlled by rotating the second hollow plate, the putting speed of the catalyst is controlled, and when the holes in the first hollow plate are completely covered by the second hollow plate, the putting of the catalyst is stopped, so that the putting speed and the putting amount of the catalyst are flexibly controlled.
3. According to the isobutene production method and the isobutene production equipment, the telescopic piece drives the lifting plate to move upwards, so that the material outlet pipeline is exposed, the catalyst falls into the recovery box through the material outlet pipeline, is taken out through the electromagnetic valve, and is put in a new catalyst in the reaction tower through the feeding mechanism, so that the catalyst is convenient to replace.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic diagram of a second hollow-out plate structure according to the present invention.
Fig. 4 is an enlarged schematic view of the structure of the present invention at a.
Fig. 5 is a schematic view of a partial perspective structure of the present invention.
In the figure: 100. a reaction tower; 200. a feeding mechanism; 211. a feed box; 212. a flip cover; 213. a handle; 214. the first hollowed-out plate; 215. the second hollowed-out plate; 216. inserting blocks; 217. a slide block; 218. a slide rail; 219. a rotating shaft; 221. a first motor; 300. a circulation mechanism; 310. an impeller; 311. a first support bar; 312. a first bevel gear; 313. a rotating throwing disc; 314. a second support bar; 315. a second bevel gear; 316. a rack; 317. a fixed gear; 318. a second motor; 319. moving the material box; 320. a torsion spring; 321. a beveled protrusion; 322. a guide plate; 400. a replacement mechanism; 410. a lifting plate; 411. a discharge pipe; 412. a telescoping member; 413. a connecting rod; 414. a recovery box; 415. a solenoid valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The present embodiment aims to facilitate solving the problems of the existing butane dehydrogenation technology, in which isobutane gas is generally introduced into a dehydrogenation tower filled with a catalyst, and is converted into isobutene under the action of the catalyst, however, the catalyst in the dehydrogenation tower is easy to accumulate and coke under high temperature conditions, the contact area between the isobutane gas and the catalyst is reduced, and the production efficiency is affected, referring to fig. 1, 2 and 5, an isobutene production apparatus includes a circulation mechanism 300, the circulation mechanism 300 is disposed in the reaction tower 100, the circulation mechanism 300 includes an impeller 310, the impeller 310 is rotatably sleeved at the end of a first support rod 311, the first support rod 311 is fixedly connected with the inner wall of the reaction tower 100, a first conical gear 312 is inserted at the inner side of the impeller 310 through a straight rod interference, a rotating disk 313 is disposed in the reaction tower 100, the rotating disk 313 is rotatably mounted at the end of a second support rod 314, the second support rod 314 is fixedly connected with the inner wall of the reaction tower 100, a second conical gear is fixedly mounted at the upper side of the rotating disk 313, and the second conical gear 315 is meshed with the first conical gear 312.
The circulation mechanism 300 further comprises racks 316, the racks 316 are vertically arranged on the inner side of the reaction tower 110, fixed gears 317 are rotatably arranged on the inner side of the reaction tower 100, the number of the fixed gears 317 is two, the racks 316 and the fixed gears 317 are meshed with each other, a second motor 318 is arranged on the outer side of the reaction tower 100, an output shaft of the second motor 318 is in transmission connection with one of the fixed gears 317, a movable material box 319 is arranged on the side portion of the racks 316, the number of the movable material boxes 319 is two, a connecting block is arranged on the side portion of the racks 316, one end of a torsion spring 320 is arranged on the outer side of the connecting block, the other end of the torsion spring 320 is connected with the movable material box 319, and the supporting force of the torsion spring 320 is enough to support the movable material box 319 filled with catalyst, so that the movable material box 319 keeps a box mouth upwards.
The inclined surface lug 321 is installed to the inboard of reaction tower 100, inclined surface lug 321 sets up in the upper end of reaction tower 100, when one of them removes the magazine 319 and contacts with inclined surface lug 321, inclined surface lug 321 makes gradually and removes the magazine 319 slope, and another removes the magazine 319 simultaneously and be located the recess of the bottom of reaction tower 100, and the inner bottom of reaction tower 110 sets up to the arcwall face of slope, installs deflector 322 in the reaction tower 100, the deflector 322 slope sets up between the removal magazine 319 and the impeller 310 of upper end, and the deflector is close to the one side height of impeller 310 low.
In this embodiment: through the setting of feeding mechanism 200, throw catalyst into reaction tower 110, the catalyst drops on impeller 310, make impeller 310 rotatory, rotatory impeller 310 drives the carousel 313 and rotates, the catalyst that will drop on carousel 313 throws in to reaction tower 110, the catalyst that will drop rolls in the removal magazine 319 of lower extreme, through the rotation of rack 316, make the removal magazine 319 that is equipped with the catalyst rise, through the setting of inclined plane lug 321, make the removal magazine 319 that is equipped with the catalyst slope, the catalyst of wherein is dumped on deflector 322, through the guide effect of deflector 322, make the catalyst drop on impeller 310 once more, simultaneously, empty removal magazine 319 is in the reaction tower 110 bottom, catch the catalyst that falls, under the continuous circulation action of catalyst drop and spill, make the clearance between the catalyst increase, and change the catalyst through change mechanism 400, thereby the contact area of raw materials isobutane and catalyst effectively, improve the production efficiency of isobutene, the dehydrogenation gas dehydrogenation of isobutene is carried out in the catalyst in the tower through the guide effect of deflector 322, but the dehydrogenation gas is easily reduced to the catalyst in the dehydrogenation gas of isobutene is realized, the dehydrogenation gas is normally in the catalyst, the dehydrogenation gas is easy to the catalyst is deposited in the catalyst, the dehydrogenation condition of the catalyst is easy to the catalyst is reduced, the catalyst is contacted with the catalyst in the coke-gas is easy to be reduced.
Example 2
The present embodiment is intended to further facilitate the solution of the problem that the flexible control of the catalyst input speed and the catalyst input amount is inconvenient, and is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1, fig. 2, fig. 3 and fig. 4, the feeding mechanism 200 is disposed on the upper side of the reaction tower 100, the feeding mechanism 200 includes a feed box 211, a flip 212 is hinged to the side portion of the feed box 211, a handle 213 is mounted on the upper side of the flip 212, so that the catalyst is conveniently replenished into the feed box 211, a first hollow plate 214 is mounted on the top of the reaction tower 100, a second hollow plate 215 is disposed on the upper side of the first hollow plate 214, an inserting block 216 and a sliding block 217 are mounted on the lower side of the second hollow plate 215, the number of sliding blocks is two, the inserting block 216 is inserted in the upper central position of the first hollow plate 214, the outer side of the first hollow plate 214 is provided with a sliding rail 218, the sliding rail 218 is disposed in a ring shape, the sliding block 217 is slidingly inserted in the sliding rail 218, a rotating shaft 219 is disposed in the feed box 211 through a bearing, the rotating shaft 219 is connected to the upper central position of the second hollow plate 215, a motor is mounted on the upper side of the feed box 211, and a first motor output shaft 221 is connected to the first shaft 221.
In this embodiment: catalyst is loaded into the feed box 211, the first motor 221 drives the second hollow plate 215 to rotate, so that the holes on the second hollow plate 215 are communicated with the holes on the first hollow plate 214, the catalyst in the feed box 211 falls into the reaction tower 110, the exposure degree of the holes on the first hollow plate 214 is controlled by rotating the second hollow plate 215, the catalyst throwing speed is controlled, and when the holes on the first hollow plate 214 are completely covered by the second hollow plate 215, the catalyst throwing is stopped, so that the catalyst throwing speed and the catalyst throwing amount are flexibly controlled.
Example 3
This embodiment is intended to further facilitate solving the problem that the catalyst is inconvenient to replace, and is an improvement made on the basis of embodiment 1, specifically, please refer to fig. 1 and 2, the replacement mechanism 400 is disposed inside the reaction tower 100, the replacement mechanism 400 includes a lifting plate 410, a discharging pipe 411 is disposed on the side of the reaction tower 100, the discharging pipe 411 is disposed below the lifting plate 410 and is covered by the lifting plate 410, two ends of the lifting plate 410 are respectively close to the inner wall of the reaction tower 110, a telescopic member 412 is mounted inside the reaction tower 100, a connecting rod 413 is mounted at the telescopic end of the telescopic member 412, and the connecting rod 413 is fixedly connected with the lower side of the lifting plate 410.
The recovery tank 414 is installed to reaction tower 100 bottom, and recovery tank 414 and ejection of compact pipeline 411 intercommunication, and recovery tank 414 lateral part is connected with solenoid valve 415, and solenoid valve 415 sets up to the high temperature solenoid valve that can use under high temperature condition, and high temperature solenoid valve is the solenoid valve of a direct type of guide, and its wide application is for boats and ships heavy industry, test equipment and firing equipment etc. its theory of operation is: after the electromagnet is electrified, the connecting rod is lifted, and the rotating shaft starts to rotate, and the motion acts on the pilot valve to open the main valve, after the power is off, the pilot valve is half-on under the action of the dead weight of the armature and the return spring, and after the pilot valve is closed, the main valve is closed by pressure difference.
In this embodiment: the telescopic piece 412 drives the lifting plate 410 to move upwards, so that the material outlet pipeline 411 is exposed, the catalyst falls into the recovery box 414 through the material outlet pipeline 411, is taken out through the electromagnetic valve 415, and a new catalyst is put into the reaction tower 110 through the feeding mechanism 200, so that the catalyst is convenient to replace.
Example 4
The production method of isobutene comprises the following specific steps:
s1, adding a catalyst: the catalyst is gradually and uniformly fed into the reaction column 100 for catalytic dehydrogenation by the feeding mechanism 200.
S2, dynamic circulation of a catalyst: the catalyst in the reaction tower 100 is subjected to a cycle of throwing-collecting-re-throwing through the circulation mechanism 300, so that the gap space between catalyst particles is increased, the exposed surface area of the catalyst is increased, and the raw material isobutane gas is fully contacted with the catalyst.
S3, replacing a catalyst: the catalyst in the reaction tower 100 is replaced by the replacement mechanism 400, so that the catalyst is prevented from being used for a long time, and the surface of the catalyst is coked.
Before S1, introducing isobutane gas as a production raw material into the reaction tower 100, after S3, leading a product generated by catalysis out of the reaction tower 100, and separating the gas to obtain the isobutene as a required product.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. The production method of isobutene is characterized by comprising the following specific steps:
s1, adding a catalyst: gradually and uniformly throwing the catalyst into a reaction tower (100) for catalytic dehydrogenation by using a feeding mechanism (200);
s2, dynamic circulation of a catalyst: the catalyst in the reaction tower (100) is subjected to the circulation steps of throwing, collecting and re-throwing through a circulation mechanism (300), so that the gap space among catalyst particles is increased, the exposed surface area of the catalyst is increased, and the raw material isobutane gas is fully contacted with the catalyst;
s3, replacing a catalyst: the catalyst in the reaction tower (100) is replaced by the replacement mechanism (400), so that the catalyst is prevented from being used for a long time, and the surface of the catalyst is prevented from coking.
2. The method for producing isobutene as claimed in claim 1, wherein: before the S1 is carried out, isobutane gas serving as a production raw material is firstly introduced into the reaction tower (100), after the S3 is carried out, a product generated by catalysis is led out of the reaction tower (100), and then gas separation is carried out, so that the isobutene serving as a required product is obtained.
3. An apparatus for producing isobutene as claimed in claim 1, wherein: the feeding mechanism (200) is arranged on the outer side of the reaction tower (100), the feeding mechanism (200) comprises a feed box (211), a flip cover (212) is hinged to the side portion of the feed box (211), and a handle (213) is arranged on the outer side of the flip cover (212).
4. An apparatus for producing isobutene as claimed in claim 3, wherein: first fretwork board (214) are installed to reaction tower (100) lateral part, first fretwork board (214) outside is provided with second fretwork board (215), insert block (216) and slider (217) are installed in second fretwork board (215) outside, insert block (216) are inserted and are established first fretwork board (214) lateral part, first fretwork board (214) outside is provided with slide rail (218), slide rail (218) set up to annular, slider (217) slip is inserted and is established in slide rail (218).
5. An apparatus for producing isobutene as claimed in claim 4, wherein: the rotary shaft (219) is rotationally arranged in the feed box (211), the rotary shaft (219) is connected with the second hollowed-out plate (215), a first motor (221) is arranged on the outer side of the feed box (211), and an output shaft of the first motor (221) is in transmission connection with the rotary shaft (219).
6. An apparatus for producing isobutene as claimed in claim 1, wherein: circulation mechanism (300) set up in reaction tower (100), circulation mechanism (300) include impeller (310), impeller (310) rotate the cover and establish first bracing piece (311) tip, first bracing piece (311) with the inner wall connection of reaction tower (100), first conical gear (312) are inserted to impeller (310) inboard, be provided with in reaction tower (100) and change throwing dish (313), change throwing dish (313) rotation and install at second bracing piece (314) tip, second bracing piece (314) with the inner wall connection of reaction tower (100), change throwing dish (313) outside and install second conical gear (315), second conical gear (315) with first conical gear (312) intermeshing.
7. An apparatus for producing isobutene as claimed in claim 1, wherein: the circulating mechanism (300) further comprises a rack (316), fixed gears (317) are rotatably arranged on the inner side of the reaction tower (100), the fixed gears (317) are arranged in a plurality, the rack (316) is meshed with the fixed gears (317), a second motor (318) is arranged on the outer side of the reaction tower (100), and an output shaft of the second motor (318) is in transmission connection with one of the fixed gears (317).
8. An apparatus for producing isobutene as claimed in claim 7, wherein: the utility model provides a reaction tower, including rack (316) lateral part, rack (316) lateral part is provided with removal magazine (319), the quantity of removing magazine (319) sets up to two, the connecting block is installed to rack (316) lateral part, torsional spring (320) are installed in the connecting block outside, torsional spring (320) with remove magazine (319) are connected, inclined plane lug (321) are installed to reaction tower (100) inboard, inclined plane lug (321) set up the upper end of reaction tower (100), one of them remove magazine (319) with when inclined plane lug (321) contacted, another remove magazine (319) are located the bottom of reaction tower (100), install deflector (322) in reaction tower (100), deflector (322) slope set up in the upper end remove between magazine (319) and impeller (310), and be close to one side height of impeller (310) is low.
9. An apparatus for producing isobutene as claimed in claim 1, wherein: the utility model discloses a reaction tower, including reaction tower (100), change mechanism (400) are in reaction tower (100) inboard, change mechanism (400) include lifter plate (410), reaction tower (100) lateral part is provided with ejection of compact pipeline (411), ejection of compact pipeline (411) set up lifter plate (410) downside, extension piece (412) are installed to reaction tower (100) inboard, connecting rod (413) are installed to the flexible end of extension piece (412), connecting rod (413) with lifter plate (410) are connected.
10. An apparatus for producing isobutene as claimed in claim 9, wherein: the recovery box (414) is arranged on the outer side of the reaction tower (100), the recovery box (414) is communicated with the discharging pipeline (411), and an electromagnetic valve (415) is connected to the side part of the recovery box (414).
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| CN202310470512.3A CN116474679A (en) | 2023-04-27 | 2023-04-27 | Method and equipment for producing isobutene |
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| CN202310470512.3A CN116474679A (en) | 2023-04-27 | 2023-04-27 | Method and equipment for producing isobutene |
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