CN112980495B - Distillation device for light aromatic hydrocarbons - Google Patents
Distillation device for light aromatic hydrocarbons Download PDFInfo
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- CN112980495B CN112980495B CN202110555844.2A CN202110555844A CN112980495B CN 112980495 B CN112980495 B CN 112980495B CN 202110555844 A CN202110555844 A CN 202110555844A CN 112980495 B CN112980495 B CN 112980495B
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 45
- 238000004821 distillation Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 15
- 238000007790 scraping Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 30
- 238000003860 storage Methods 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 22
- 239000007788 liquid Substances 0.000 description 9
- 244000309464 bull Species 0.000 description 6
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/12—Controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1096—Aromatics or polyaromatics
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/30—Aromatics
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a distillation device for light aromatic hydrocarbons, which relates to the field of light aromatic hydrocarbon processing equipment and comprises a rectifying tower, a feeding pipe, a boiler, a gas collecting hood, a gas conveying pipe, a connecting block, an outer sleeve and an inner sleeve, wherein a partition plate is arranged in the rectifying tower, a gas outlet is formed in the center of the partition plate, a sealing plate is arranged at the gas outlet, an air pressure lifting assembly is arranged at the bottom of the sealing plate, blades are arranged at the bottom of the sealing plate, a driving assembly is arranged at the top of the sealing plate, and a wall scraping assembly is arranged on the right side of the rectifying tower. The invention can conveniently control the steam flow generated in the distillation process, thereby continuously carrying out hydrogenation subsequently without controlling the hydrogenation content.
Description
Technical Field
The invention relates to the field of light aromatic hydrocarbon processing equipment, in particular to a distillation device for light aromatic hydrocarbon.
Background
Light aromatics are a complex mixture of nine-carbon aromatics, and mainly come from xylene tower bottoms of a reforming unit of an oil refinery, namely reformed hydrocarbons; and secondly, the by-product from ethylene production contains a large amount of unsaturated components, and the cracked heavy aromatic hydrocarbon accounts for about eighty percent of the light aromatic hydrocarbon, so that the yield of the cracked hydrocarbon is continuously increased along with the rapid development of petrochemical industry, particularly the improvement of the ethylene production capacity, in recent years, how to fully and reasonably utilize the resources to generate the optimal economic benefit can generate great influence on the overall benefit of an ethylene device and the deep processing development of ethylene byproduct resources.
According to the distillation device for light aromatic hydrocarbon and the operation method thereof, in the hydrogenation process of light aromatic hydrocarbon, in order to prevent the surface of a catalyst from coking, unsaturated hydrocarbon in a light aromatic hydrocarbon mixture is distilled by using a distillation mode, then distilled steam is liquefied, and the liquefied unsaturated hydrocarbon is subjected to pre-hydrogenation and main hydrogenation, so that the hydrogenation of the light aromatic hydrocarbon is realized, and the mode has the following defects:
1. when the light aromatic hydrocarbon mixture is distilled by using a boiler, the distillation can be divided into a front stage, a middle stage and a rear stage, the light aromatic hydrocarbon mixture at the front stage is just distilled, the temperature does not reach the standard, unsaturated hydrocarbon in the light aromatic hydrocarbon mixture at the rear stage is quickly distilled, and the steam emission at the middle period is the largest, so that the steam flow generated during the distillation at the front stage and the rear stage is smaller than that generated during the middle stage, and when the steam generated at the front stage and the rear stage is hydrogenated and catalyzed, the steam flow at the front stage and the rear stage is smaller, so that the added hydrogen and the added catalyst are excessive, the steam flow at the middle stage is larger, so that the added hydrogen and the added catalyst are too small, the steam flow is not stable enough, and the difficulty in controlling the adding amount of the hydrogen and the added catalyst is increased;
2. when the steam generated in the distillation of the light aromatic hydrocarbon mixture is liquefied, because the light aromatic hydrocarbon mixture belongs to petroleum, unsaturated hydrocarbon in the light aromatic hydrocarbon mixture is distilled out and then is cooled by the inner sleeve, the unsaturated hydrocarbon is continuously input, and after the inner sleeve is used for a long time, a layer of liquid film is easily formed in the inner sleeve, so that when the cooling liquid cools the steam through the pipe wall, a layer of liquid film also exists to block the condensation effect of the cooling liquid on the steam, and the condensation rate of the unsaturated hydrocarbon steam is reduced.
Therefore, it is necessary to invent a distillation apparatus for light aromatic hydrocarbons to solve the above problems.
Disclosure of Invention
The invention aims to provide a distillation device for light aromatic hydrocarbon, which solves the problems that the steam flow generated in the previous and later stages of distillation is smaller than the steam flow generated in the middle stage of distillation, the hydrogenation amount and the catalyst amount cannot be effectively controlled according to the steam flow, the light aromatic hydrocarbon mixture belongs to condensed ring hydrocarbon, the concentration of the liquid per se is high, and when the steam is liquefied by using a condensing pipe, the liquefied liquid is easily adhered to the surface of the condensing pipe, so that a liquid film is formed, and the condensing effect of the condensing pipe is poor.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a distillation plant for light aromatic hydrocarbon, includes rectifying column, inlet pipe, boiler, gas collecting channel, gas-supply pipe, connecting block, overcoat and endotheca, be provided with the division board in the rectifying column, the center department of division board has seted up the gas outlet, and gas outlet department is provided with the shrouding, the bottom of shrouding is provided with atmospheric pressure lift assembly, the bottom of shrouding is provided with the blade, the top of shrouding is provided with drive assembly, the right side of rectifying column is provided with scrapes the wall subassembly.
Preferably, the atmospheric pressure lift subassembly includes square bull stick, square section of thick bamboo, spring, first bearing, two dead levers, two supports and third bearing, the center department fixed connection of square bull stick and shrouding, the outer wall of square section of thick bamboo and the inner wall fixed connection of third bearing, the left and right sides of third bearing respectively with two one side fixed connection that the support is relative, two the top of support all with the bottom fixed connection of division board, first bearing is located the outer wall of square bull stick, the left and right sides of first bearing respectively with two one side fixed connection that the dead lever is relative, two the through-hole corresponding with two dead levers is seted up respectively to the horizontal part of support, the both ends of spring respectively with the bottom of first bearing and the top fixed connection of third bearing.
Preferably, the driving assembly comprises a first bevel gear, a second bevel gear, a first rotating shaft, a second rotating shaft, a first driving wheel, a second driving wheel, a rotating disc and an articulated rod, the inner wall of the first bevel gear is fixedly connected with the outer wall of the top of the square rotating rod, the first bevel gear is meshed with the second bevel gear, the first rotating shaft and the second rotating shaft are both rotationally arranged with the right side of the rectifying tower through a bearing, the outer wall of the left side of the first rotating shaft is fixedly connected with the inner wall of the second bevel gear, the outer wall of the right side of the first rotating shaft is fixedly connected with the inner wall of a first driving wheel, the first driving wheel is meshed with a second driving wheel, the right side outer wall of second pivot and the inner wall fixed connection of second drive wheel, the right-hand member of second pivot and the center department fixed connection of carousel, the skew centre of a circle position of the right side of carousel rotates with the hinge bar and sets up.
Preferably, the wall scraping assembly comprises a U-shaped rod and an annular scraper, the bottom of the U-shaped rod is rotatably arranged on the right side of the hinge rod, a through hole corresponding to the hinge rod is formed in the bottom of the connecting block, and the bottom of the U-shaped rod penetrates through the tops of the outer sleeve and the inner sleeve and is fixedly connected with the top of the annular scraper.
Preferably, the top of the inner sleeve is fixedly connected with a sleeve, the sleeve is located on the outer wall of the U-shaped rod, the outer wall of the U-shaped rod is fixedly connected with a first piston matched with the sleeve, and the first piston is located inside the sleeve.
Preferably, the bottom of the square cylinder is provided with a stirring assembly, and stirring blades in the stirring assembly utilize power generated by rotation of blades to stir the light aromatic hydrocarbon mixture in the boiler.
Preferably, the stirring assembly comprises a stirring shaft and a plurality of stirring blades, the stirring blades are uniformly distributed on the outer side of the stirring shaft, and the top of the stirring shaft is fixedly connected with the bottom of the square cylinder.
Preferably, be provided with steam propelling movement subassembly in the rectifying column, the shrouding rises to promote the second piston in the steam propelling movement subassembly to promote hydraulic oil extrusion third piston through the second piston and form a downward thrust and promote push plate, open the air inlet that deposits the steam chest bottom, push plate in the steam propelling movement subassembly utilizes the decline of shrouding to pass through the gas collecting channel with the steam of depositing in the steam chest and impels to the gas transmission intraductally.
Preferably, the steam pushing assembly comprises a steam storage box, a second bearing, two L-shaped rods, two U-shaped tubes, two second pistons, two third pistons, two extrusion rods, a pushing plate and two connecting ropes, the steam storage box is fixedly connected with the inner wall of the rectifying tower, the two U-shaped tubes are arranged in the steam storage box, an air inlet corresponding to the pushing plate is formed in the bottom of the steam storage box, the inner wall of the second bearing is fixedly connected with the outer wall of the square rotating rod, the left side and the right side of the second bearing are fixedly connected with the two L-shaped rods respectively, the top ends of the two L-shaped rods extend into the U-shaped tubes and are fixedly connected with the bottoms of the two second pistons respectively, the third pistons are arranged in the U-shaped tubes, the bottoms of the two third pistons are fixedly connected with the tops of the two extrusion rods respectively, and the bottoms of the two extrusion rods are fixedly connected with the tops of the pushing plate respectively, and hydraulic oil is arranged between the second piston and the third piston in the U-shaped pipe, and the second piston and the third piston are connected by using a connecting rope.
The invention has the technical effects and advantages that:
1. the light aromatic hydrocarbon mixture is added into the boiler by using the feed pipe through arranging the partition plate in the rectifying tower and arranging the closing plate on the partition plate, the light aromatic hydrocarbon mixture is distilled by a boiler, and because the temperature of the early light aromatic hydrocarbon mixture does not reach the standard, therefore, the light aromatic hydrocarbon mixture generated in the early stage has less content, the gas generated by distillation is gathered at the bottom of the partition plate, when more steam is gathered at the bottom of the separation plate, the air pressure generated directly by the gas pushes the sealing plate, the sealing plate pulls the square rotating rod, the square rotating rod pulls the first bearing and the spring to open the air outlet on the separation plate, otherwise, when the air pressure at the bottom of the separation plate is insufficient, the spring pulls the sealing plate to block the air outlet on the separation plate, the steam flow generated during distillation can be conveniently controlled, so that the subsequent continuous hydrogenation can be carried out without controlling the hydrogenation content.
2. By arranging the annular scraper in the inner sleeve, the blades drive the sealing plate and the square rotating rod to rotate by the continuously ascending steam, the square rotating rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first rotating shaft to rotate, the first rotating shaft drives the first driving wheel to rotate, the first driving wheel drives the second driving wheel to rotate, and the first driving wheel is smaller than the second driving wheel, therefore, the second driving wheel can rotate slowly, the second driving wheel drives the second rotating shaft to rotate, the second rotating shaft drives the rotating disc to rotate, the rotating disc drives the hinge rod to rotate, the hinge rod pulls the U-shaped rod up and down, the U-shaped rod drives the first piston to move in the sleeve, can effectually avoid steam to flow out, U type pole promotes the annular scraper blade and strikes off the liquid film of the adhesion to sheatheeing in internally, can effectively improve the cooling efficiency to steam.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a portion of the structure of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1 according to the present invention;
FIG. 4 is a schematic view of the vapor pusher assembly of the present invention.
In the figure: 1. a rectifying tower; 2. a boiler; 3. a gas-collecting hood; 4. a gas delivery pipe; 5. connecting blocks; 6. a jacket; 7. an inner sleeve; 8. a partition plate; 9. closing the plate; 10. an air pressure raising and lowering assembly; 101. a square rotating rod; 102. a square cylinder; 103. a spring; 104. a first bearing; 105. fixing the rod; 106. a support; 107. a third bearing; 11. a blade; 12. a drive assembly; 121. a first bevel gear; 122. a second bevel gear; 123. a first rotating shaft; 124. a second rotating shaft; 125. a first drive wheel; 126. a second drive wheel; 127. a turntable; 128. a hinged lever; 13. a wall scraping assembly; 131. a U-shaped rod; 132. an annular scraper; 14. a sleeve; 15. a first piston; 16. a stirring assembly; 161. a stirring shaft; 162. stirring blades; 17. a steam pushing assembly; 171. a steam storage box; 172. a second bearing; 173. an L-shaped rod; 174. a U-shaped pipe; 175. a second piston; 176. a third piston; 177. an extrusion stem; 178. a push plate; 179. and connecting ropes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention provides a distillation device for light aromatic hydrocarbon as shown in figures 1-4, which comprises a rectifying tower 1, a feed pipe, a boiler 2, a gas collecting hood 3, a gas pipe 4, a connecting block 5, an outer sleeve 6 and an inner sleeve 7, wherein a partition plate 8 is arranged in the rectifying tower 1, a gas outlet is formed in the center of the partition plate 8, a seal plate 9 is arranged at the gas outlet, an air pressure lifting assembly 10 is arranged at the bottom of the seal plate 9, the seal plate 9 can pull a square rotating rod 101 in the air pressure lifting assembly 10 to slide in a square cylinder 102 when the air pressure is overlarge, and pull a spring 103 to deform the spring 103, so that the gas outlet on the partition plate 8 is opened, when the air pressure of the seal plate 9 is smaller than the elastic force of the spring 103, the spring 103 pulls the seal plate 9 to descend, so as to close the gas outlet on the partition plate 8, the bottom of the seal plate, the right side of the rectifying tower 1 is provided with a wall scraping assembly 13, the blade 11 rotates by the ascending air flow to drive the first bevel gear 121 in the driving assembly 12 to rotate, and transmits the rotating force of the first bevel gear 121 to the rotating disc 127 in the driving assembly 12 to rotate, the rotating disc 127 changes the rotating force into the force of the vertical movement of the hinge rod 128, the hinge rod 128 drives the U-shaped rod 131 in the wall scraping assembly 13 to move up and down, and the U-shaped rod 131 drives the annular scraper 132 by the force of the vertical movement to scrape off the liquid film adhered on the inner sleeve 7.
Meanwhile, the air pressure lifting assembly 10 includes a square rotating rod 101, a square cylinder 102, a spring 103, a first bearing 104, two fixing rods 105, two brackets 106 and a third bearing 107, the square rotating rod 101 is fixedly connected with the center of the closing plate 9, the outer wall of the square cylinder 102 is fixedly connected with the inner wall of the third bearing 107, the left and right sides of the third bearing 107 are fixedly connected with the opposite sides of the two brackets 106, respectively, the tops of the two brackets 106 are fixedly connected with the bottom of the dividing plate 8, the first bearing 104 is located on the outer wall of the square rotating rod 101, the left and right sides of the first bearing 104 are fixedly connected with the opposite sides of the two fixing rods 105, respectively, the horizontal parts of the two brackets 106 are provided with through holes corresponding to the two fixing rods 105, the two ends of the spring 103 are fixedly connected with the bottom of the first bearing 104 and the top of the third bearing 107, respectively, the light aromatic hydrocarbon mixture is added into the boiler 2, use boiler 2 to distill light aromatic hydrocarbon mixture, because of light aromatic hydrocarbon mixture temperature does not reach standard earlier, consequently, the light aromatic hydrocarbon mixture content that produces earlier stage is less, the gas gathering that the distillation produced is in the bottom of division board 8, when the steam of 8 bottom aggregations of division board is more, the atmospheric pressure that gaseous directly produced promotes shrouding 9, shrouding 9 pulls square bull stick 101, square bull stick 101 pulls first bearing 104 and spring 103, open the gas outlet on the division board 8, on the contrary when the atmospheric pressure of 8 bottoms of division board is insufficient, spring 103 pulls the gas outlet of shrouding 9 on with division board 8 and plugs up.
In addition, the driving assembly 12 includes a first bevel gear 121, a second bevel gear 122, a first rotating shaft 123, a second rotating shaft 124, a first driving wheel 125, a second driving wheel 126, a rotating disc 127 and an articulated rod 128, wherein the inner wall of the first bevel gear 121 is fixedly connected with the outer wall of the top of the square rotating rod 101, the first bevel gear 121 is engaged with the second bevel gear 122, the first rotating shaft 123 and the second rotating shaft 124 are both rotatably disposed on the right side of the rectifying tower 1 through bearings, the left outer wall of the first rotating shaft 123 is fixedly connected with the inner wall of the second bevel gear 122, the right outer wall of the first rotating shaft 123 is fixedly connected with the inner wall of the first driving wheel 125, the first driving wheel 125 is engaged with the second driving wheel 126, the right outer wall of the second rotating shaft 124 is fixedly connected with the inner wall of the second driving wheel 126, the right end of the second rotating shaft 124 is fixedly connected with the center of the rotating disc 127, the right side of the rotating, the wall scraping component 13 comprises a U-shaped rod 131 and an annular scraping plate 132, the bottom of the U-shaped rod 131 is rotatably arranged on the right side of the hinge rod 128, the bottom of the connecting block 5 is provided with a through hole corresponding to the hinge rod 128, the bottom of the U-shaped rod 131 passes through the tops of the outer sleeve 6 and the inner sleeve 7 and is fixedly connected with the top of the annular scraping plate 132, the blade 11 is driven to rotate by continuously rising steam, the blade 11 drives the sealing plate 9 and the square rotating rod 101 to rotate, the square rotating rod 101 drives the first bevel gear 121 to rotate, the first bevel gear 121 drives the second bevel gear 122 to rotate, the second bevel gear 122 drives the first rotating shaft 123 to rotate, the first rotating shaft 123 drives the first driving wheel 125 to rotate, the first driving wheel 125 drives the second driving wheel 126 to rotate, and the second driving wheel 126 can rotate slowly as the first driving wheel 125 is smaller than the second driving wheel 126, the second driving, the second rotating shaft 124 drives the rotating disc 127 to rotate, the rotating disc 127 drives the hinge rod 128 to rotate, the hinge rod 128 pulls the U-shaped rod 131 up and down, and the U-shaped rod 131 pushes the annular scraper 132 to scrape off the liquid film adhered to the inner sleeve 7 by the force of the up-and-down reciprocating movement.
Moreover, the top of the inner sleeve 7 is fixedly connected with a sleeve 14, the sleeve 14 is located on the outer wall of the U-shaped rod 131, the outer wall of the U-shaped rod 131 is fixedly connected with a first piston 15 matched with the sleeve 14, the first piston 15 is located inside the sleeve 14, and when the inner sleeve 7 is subjected to wall scraping operation, the first piston 15 is pulled by the U-shaped rod 131, so that the first piston 15 moves in the sleeve 14, and steam can be effectively prevented from flowing out of the inner sleeve 7.
More specifically, the bottom of square tube 102 is provided with stirring subassembly 16, thereby stirring leaf 162 in the stirring subassembly 16 utilizes the rotatory power that produces of blade 11 to stir the light aromatic mixture in the boiler 2, stirring subassembly 16 includes (mixing) shaft 161 and a plurality of stirring leaf 162, a plurality of stirring leaf 162 evenly distributed set up the outside at (mixing) shaft 161, the top of (mixing) shaft 161 and the bottom fixed connection of square tube 102, blade 11 is at the rotation in-process, drive square tube 102 at the third bearing 107 internal rotation through square bull stick 101, square tube 102 drives (mixing) shaft 161 and rotates, (mixing) shaft 161 drives stirring leaf 162 and rotates, use stirring leaf 162 to stir the light aromatic mixture in the boiler 2, improve the distillation efficiency of light aromatic mixture.
It should be further noted that, a steam pushing assembly 17 is arranged in the rectifying tower 1, the sealing plate 9 is lifted to push the second piston 175 in the steam pushing assembly 17, and the second piston 175 pushes hydraulic oil to press the third piston 176 to form a downward pushing force to push the pushing plate 178, so that the air inlet at the bottom of the steam storage tank 171 is opened, the pushing plate 178 in the steam pushing assembly 17 pushes the steam in the steam storage tank 171 to the air pipe 4 through the air collecting hood 3 by the descending of the sealing plate 9, the steam pushing assembly 17 includes the steam storage tank 171, a second bearing 172, two L-shaped rods 173, two U-shaped pipes 174, two second pistons 175, two third pistons 176, two pressing rods 177, two pushing plates 178 and two connecting ropes 179, the steam storage tank 171 is fixedly connected with the inner wall of the rectifying tower 1, the two U-shaped pipes 174 are both arranged in the steam storage tank 171, the bottom of the steam storage tank 171 is provided with an air inlet corresponding to the pushing plate 178, the inner wall of the second bearing 172 is fixedly connected with the outer wall of the square rotating rod 101, the left side and the right side of the second bearing 172 are respectively fixedly connected with the two L-shaped rods 173, the top ends of the two L-shaped rods 173 extend into the U-shaped pipe 174 and are respectively fixedly connected with the bottoms of the two second pistons 175, the third pistons 176 are arranged in the U-shaped pipe 174, the bottoms of the two third pistons 176 are respectively fixedly connected with the tops of the two extrusion rods 177, the bottoms of the two extrusion rods 177 are respectively fixedly connected with the top of the pushing plate 178, hydraulic oil is arranged between the second pistons 175 and the third pistons 176 in the U-shaped pipe 174, the second pistons 175 and the third pistons 176 are connected through connecting ropes 179, when the sealing plate 9 is lifted and opened, the second bearing 172 on the square rotating rod 101 pushes the L-shaped rods 173 to move upwards, the L-shaped rods 173 push the second pistons 175 in the U-shaped pipe 174, the second pistons 175 are used for extruding the, and extrude third piston 176 through hydraulic oil, third piston 176 promotes the ram 177, ram 177 promotes push plate 178, open the air inlet on will depositing the steam case 171 for steam can enter into in the gas-supply pipe 4 through gas collecting channel 3, and enter into endotheca 7 through gas-supply pipe 4, in shrouding 9 pulldown in-process, push plate 178 rebound, promote the steam that deposits in the steam case 171, make when changing light arene mixture, can continuously carry unsaturated light arene to subsequent hydrogenation unit.
The working principle of the invention is as follows:
adding a light aromatic hydrocarbon mixture into a boiler 2 by using a feeding pipe, distilling the light aromatic hydrocarbon mixture by using the boiler 2, wherein the temperature of the early light aromatic hydrocarbon mixture does not reach the standard, so that the content of the early light aromatic hydrocarbon mixture is less, gas generated by distillation is gathered at the bottom of a partition plate 8, when more steam is gathered at the bottom of the partition plate 8, the gas directly generates gas pressure to push a sealing plate 9, the sealing plate 9 pulls a square rotating rod 101, the square rotating rod 101 pulls a first bearing 104 and a spring 103 to open a gas outlet on the partition plate 8, when the sealing plate 9 is lifted and opened, a second bearing 172 on the square rotating rod 101 pushes an L-shaped rod 173 to move upwards, the L-shaped rod 173 pushes a second piston 175 in a U-shaped pipe 174, the second piston 175 is used for extruding hydraulic oil, and the third piston 176 is extruded by the hydraulic oil, the third piston 176 pushes an extruding rod 177, the extrusion rod 177 pushes the push plate 178 to open the air inlet on the steam storage tank 171, so that steam can enter the air delivery pipe 4 through the air collection hood 3 and enter the inner sleeve 7 through the air delivery pipe 4, when the closing plate 9 drives the square rotating rod 101 to ascend, the first bevel gear 121 on the square rotating rod 101 is meshed with the second bevel gear 122 on the first rotating shaft 123, and the blades 11 arranged at the bottom of the closing plate 9 can drive the blades 11 to rotate through the steam which continuously ascends, the blades 11 drive the closing plate 9 and the square rotating rod 101 to rotate, the square rotating rod 101 is used to drive the first bevel gear 121 to rotate, the first bevel gear 121 drives the second bevel gear 122 to rotate, the second rotating shaft 122 drives the first rotating shaft 123 to rotate, the first rotating shaft 123 drives the first driving wheel 125 to rotate, the first driving wheel 125 drives the second driving wheel 126 to rotate, and because the first driving wheel 125 is smaller than the second driving wheel, therefore, the second driving wheel 126 can rotate slowly, the second driving wheel 126 drives the second rotating shaft 124 to rotate, the second rotating shaft 124 drives the rotating disc 127 to rotate, the rotating disc 127 drives the hinge rod 128 to rotate, the hinge rod 128 pulls the U-shaped rod 131 up and down, the U-shaped rod 131 drives the first piston 15 to move in the sleeve 14, so that steam can be effectively prevented from flowing out, the U-shaped rod 131 pushes the annular scraper 132 to scrape off a liquid film adhered on the inner sleeve 7 by the force of the up-and-down reciprocating movement, the blade 11 drives the square cylinder 102 to rotate in the third bearing 107 by the square rotating rod 101 during the rotation process, the square cylinder 102 drives the stirring shaft 161 to rotate, the stirring shaft 161 drives the stirring blades 162 to rotate, the light aromatic hydrocarbon mixture in the boiler 2 is stirred by the stirring blades 162, the distillation efficiency of the light aromatic hydrocarbon mixture is improved, otherwise, when the air pressure at the bottom of the partition plate 8 is insufficient, the spring 103 pulls the, and in the process of pulling down, the pushing plate 178 moves upwards to push the steam in the steam storage tank 171, so that unsaturated light aromatic hydrocarbon can be continuously conveyed to a subsequent hydrogenation device when the light aromatic hydrocarbon mixture is replaced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a distillation plant for light aromatic hydrocarbon, includes rectifying column (1), inlet pipe, boiler (2), gas collecting channel (3), gas-supply pipe (4), connecting block (5), overcoat (6) and endotheca (7), its characterized in that: be provided with division board (8) in rectifying column (1), the center department of division board (8) has seted up the gas outlet, and gas outlet department is provided with shrouding (9), the bottom of shrouding (9) is provided with atmospheric pressure lifting unit (10), the bottom of shrouding (9) is provided with blade (11), the top of shrouding (9) is provided with drive assembly (12), the right side of rectifying column (1) is provided with scrapes wall subassembly (13).
2. A distillation apparatus for light aromatic hydrocarbons according to claim 1, wherein: the air pressure lifting assembly (10) comprises a square rotating rod (101), a square barrel (102), a spring (103), a first bearing (104), two fixing rods (105), two supports (106) and a third bearing (107), wherein the square rotating rod (101) is fixedly connected with the center of the sealing plate (9), the outer wall of the square barrel (102) is fixedly connected with the inner wall of the third bearing (107), the left side and the right side of the third bearing (107) are fixedly connected with the opposite sides of the two supports (106), the tops of the two supports (106) are fixedly connected with the bottom of the partition plate (8), the first bearing (104) is positioned on the outer wall of the square rotating rod (101), the left side and the right side of the first bearing (104) are fixedly connected with the opposite sides of the two fixing rods (105), through holes corresponding to the two fixing rods (105) are formed in the horizontal parts of the two supports (106), and two ends of the spring (103) are respectively and fixedly connected with the bottom of the first bearing (104) and the top of the third bearing (107).
3. A distillation apparatus for light aromatics according to claim 2, wherein: the driving assembly (12) comprises a first bevel gear (121), a second bevel gear (122), a first rotating shaft (123), a second rotating shaft (124), a first driving wheel (125), a second driving wheel (126), a rotating disc (127) and an articulated rod (128), wherein the inner wall of the first bevel gear (121) is fixedly connected with the outer wall of the top of the square rotating rod (101), the first bevel gear (121) is meshed with the second bevel gear (122), the first rotating shaft (123) and the second rotating shaft (124) are both rotatably arranged on the right side of the rectifying tower (1) through bearings, the outer wall of the left side of the first rotating shaft (123) is fixedly connected with the inner wall of the second bevel gear (122), the outer wall of the right side of the first rotating shaft (123) is fixedly connected with the inner wall of the first driving wheel (125), the first driving wheel (125) is meshed with the second driving wheel (126), and the outer wall of the right side of the second rotating shaft (124) is fixedly connected with the inner wall of the second driving wheel (126), the right end of the second rotating shaft (124) is fixedly connected with the center of the rotating disc (127), and the position of the right side of the rotating disc (127), which deviates from the center of a circle, is rotatably arranged with the hinge rod (128).
4. A distillation apparatus for light aromatics according to claim 3, wherein: wall scraping assembly (13) includes U type pole (131) and annular scraper blade (132), the bottom of U type pole (131) rotates with the right side of articulated pole (128) and sets up, the through-hole corresponding with articulated pole (128) is seted up to the bottom of connecting block (5), the bottom of U type pole (131) pass the top of overcoat (6) and endotheca (7) and with the top fixed connection of annular scraper blade (132).
5. A distillation apparatus for light aromatics according to claim 4, wherein: the top of the inner sleeve (7) is fixedly connected with a sleeve (14), the sleeve (14) is located on the outer wall of the U-shaped rod (131), the outer wall of the U-shaped rod (131) is fixedly connected with a first piston (15) matched with the sleeve (14), and the first piston (15) is located inside the sleeve (14).
6. A distillation apparatus for light aromatics according to claim 2, wherein: the bottom of the square cylinder (102) is provided with a stirring assembly (16), and stirring blades (162) in the stirring assembly (16) utilize power generated by rotation of the blades (11) to stir the light aromatic hydrocarbon mixture in the boiler (2).
7. A distillation apparatus for light aromatics according to claim 6, wherein: the stirring assembly (16) comprises a stirring shaft (161) and a plurality of stirring blades (162), wherein the stirring blades (162) are uniformly distributed on the outer side of the stirring shaft (161), and the top of the stirring shaft (161) is fixedly connected with the bottom of the square cylinder (102).
8. A distillation apparatus for light aromatics according to claim 2, wherein: be provided with steam propelling movement subassembly (17) in rectifying column (1), shrouding (9) rise second piston (175) in promoting steam propelling movement subassembly (17) to promote hydraulic oil extrusion third piston (176) through second piston (175) and form a decurrent thrust and promote push plate (178), will deposit the air inlet of steam box (171) bottom and open, push plate (178) in steam propelling movement subassembly (17) utilize the decline of shrouding (9) will deposit the steam in steam box (171) and pass through gas collecting channel (3) propelling movement to gas-supply pipe (4) in.
9. A distillation apparatus for light aromatics according to claim 8, wherein: the steam pushing assembly (17) comprises a steam storage box (171), a second bearing (172), two L-shaped rods (173), two U-shaped pipes (174), two second pistons (175), two third pistons (176), two extrusion rods (177), a pushing plate (178) and two connecting ropes (179), the steam storage box (171) is fixedly connected with the inner wall of the rectifying tower (1), the two U-shaped pipes (174) are arranged in the steam storage box (171), the bottom of the steam storage box (171) is provided with an air inlet corresponding to the pushing plate (178), the inner wall of the second bearing (172) is fixedly connected with the outer wall of the square rotating rod (101), the left side and the right side of the second bearing (172) are fixedly connected with the two L-shaped rods (173) respectively, the top ends of the two L-shaped rods (173) extend into the U-shaped pipes (174) and are fixedly connected with the bottoms of the two second pistons (175) respectively, the third pistons (176) are arranged in the U-shaped pipe (174), the bottoms of the two third pistons (176) are fixedly connected with the tops of the two extrusion rods (177) respectively, the bottoms of the two extrusion rods (177) are fixedly connected with the top of the pushing plate (178), hydraulic oil is arranged between the second piston (175) and the third pistons (176) in the U-shaped pipe (174), and the second piston (175) and the third pistons (176) are connected through a connecting rope (179).
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| CN115970311B (en) * | 2023-02-24 | 2023-07-18 | 安徽瑞柏新材料有限公司 | Energy-saving and pollution-preventing rectifying equipment for methyl acetate production |
| CN116370996B (en) * | 2023-05-25 | 2023-09-12 | 河北新欣园能源股份有限公司 | High-efficient high-purity splitter of methyl tertiary butyl ether |
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| CN211215483U (en) * | 2019-10-10 | 2020-08-11 | 苏州高夫高分子材料有限公司 | Isocyanate's purification device |
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| CN109999526A (en) * | 2019-04-16 | 2019-07-12 | 安徽华尔泰化工股份有限公司 | A kind of energy-saving methanol rectification technique |
| CN211215483U (en) * | 2019-10-10 | 2020-08-11 | 苏州高夫高分子材料有限公司 | Isocyanate's purification device |
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Application publication date: 20210618 Assignee: Liaoning Changli Energy Co.,Ltd. Assignor: Shandong Shengxing new energy Co.,Ltd. Contract record no.: X2022980014524 Denomination of invention: A kind of distillation apparatus for light aromatics Granted publication date: 20210716 License type: Common License Record date: 20220908 |
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Effective date of registration: 20240129 Address after: 257300 No. 3 Shengli Road, Dawang Economic Development Zone, Guangrao County, Dongying City, Shandong Province Patentee after: SHANDONG SHENGXING CHEMICAL Co.,Ltd. Country or region after: China Address before: 257000 No.7 Shengli Road, Shandong Dawang Economic Development Zone, Guangrao County, Dongying City, Shandong Province Patentee before: Shandong Shengxing new energy Co.,Ltd. Country or region before: China |
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