CN115814445A - Device and method for purifying reflux tank of rectifying tower - Google Patents
Device and method for purifying reflux tank of rectifying tower Download PDFInfo
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- CN115814445A CN115814445A CN202211549877.7A CN202211549877A CN115814445A CN 115814445 A CN115814445 A CN 115814445A CN 202211549877 A CN202211549877 A CN 202211549877A CN 115814445 A CN115814445 A CN 115814445A
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- 238000010992 reflux Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 15
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000001294 propane Substances 0.000 claims abstract description 36
- 238000000746 purification Methods 0.000 claims abstract description 28
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 23
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 18
- JTXAHXNXKFGXIT-UHFFFAOYSA-N propane;prop-1-ene Chemical group CCC.CC=C JTXAHXNXKFGXIT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 244000309464 bull Species 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract description 9
- 230000008020 evaporation Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
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- 239000012535 impurity Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
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- 210000004489 deciduous teeth Anatomy 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to the technical field of propane propylene purification equipment, and discloses a purification device of a reflux tank of a rectification tower, which comprises two fixed feet, wherein the top surfaces of the two fixed feet are fixedly connected with a reaction tank, a filter plate can be cleaned in the process of purifying propylene and propane in the reflux tank through a cleaning mechanism in the scheme, filter holes on the surface of the filter plate are cleaned under the condition that the reaction tank is not integrally dismounted, so that the evaporation capacity is improved, then the filter plate is taken out from the interior of the reaction tank by using a dismounting mechanism after long-time working operation or before reaction production for replacement and maintenance, the filtering quality is improved, the purification quality is further improved, finally, a weir plate arranged in the interior of the reaction tank is subjected to height adjustment by using the opening and closing effect formed by a plurality of groups of lifting mechanisms, the phase change is used for optimizing and heightening the weir plate area, so that the liquid level fluctuation in the reaction tank is prevented, and the risk that liquid in a shell overflows from the weir plate is caused.
Description
Technical Field
The invention relates to the field of propane propylene purification equipment, in particular to a device and a method for purifying a reflux tank of a rectifying tower.
Background
Propylene (CH 2= CH-CH 3) is colorless and slightly sweet gas at normal temperature, is flammable, has the explosion limit of 2% -11%, is insoluble in water, is dissolved in an organic solvent, belongs to a low-toxicity substance, is propane, has a chemical formula of C3H8, has a structural formula of CH3CH2CH3, is usually gaseous, but is generally compressed into liquid for transportation, and a part of propane-propylene mixture (mixed carbon three for short) is periodically discharged from a reflux tank V-2007 of a propylene rectifying tower to reduce the content of propane in the circulating propylene. The main components of the mixed carbon III are propane, propylene, nitrogen and methanol, and the propylene-propane rectifying tower and the auxiliary devices thereof are additionally arranged for the outward delivery treatment at present, so that the components are separated and purified from the mixed carbon III.
Through search, chinese patent with publication number CN215609428U discloses a device for purifying propane and propylene. The device comprises: the first rectifying tower, the second rectifying tower and the second rectifying tower kettle heater; the liquefied gas is firstly rectified in a first rectifying tower, high-purity propylene is obtained by collecting at the top of the tower, a mixed liquid of propane and heavy components is obtained at the bottom of the tower, the mixed liquid continuously enters a second rectifying tower for rectification, the propane is heated and gasified to be separated from the heavy components in a heater at the bottom of the second rectifying tower, and the high-purity propane is extracted at the top of the second rectifying tower. This device adopts two tower rectification separation modes, not only can purify the propane in the aldehyde absorption analytic method output liquefied gas, simultaneously can also effectively separate out propylene, realize carrying out the resourceization collection utilization to material in the heavy component, and the device simple structure, need not to introduce a large amount of adsorbents, the running cost is low, more be fit for the industrialization application, wherein propylene and propane are when purifying, need clear away impurity etc. through the filter screen, generally fix the mounting structure of filter screen spiro union in the knockout tower, be not convenient for install and dismantle the filter screen, and the cauldron formula reboiler can produce serious liquid level fluctuation, and the height of weir plate keeps fixed height at the knockout tower usually, consequently, easily cause the risk that liquid can spill over from the weir plate in the shell, and simultaneously, still can cause the evaporation capacity to descend, there is the dry combustion scheduling problem in the tube bank, lead to the process flow unstability, can not reach the processing requirement, cause great loss for the user.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a device and a method for purifying a reflux tank of a rectifying tower, which solve the problems that impurities and the like need to be removed through a filter screen during purification of propylene and propane, the filter screen is usually screwed and fixed on a mounting structure screwed in a separation tower, the filter screen is inconvenient to mount and dismount, a kettle reboiler can generate serious liquid level fluctuation to cause the risk that liquid in a shell can overflow from a weir plate, meanwhile, the evaporation capacity is reduced, the tube bundle is dried, and the like, so that the process flow is unstable, the treatment requirement cannot be met, and great loss is caused to users.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A purifying device of a reflux tank of a rectifying tower comprises two fixed legs, the top surfaces of the two fixed legs are fixedly connected with a reaction tank, one side of the reaction tank is fixedly connected with a fixed box, the top surface of the fixed box is connected with a filter plate in a sliding way, the inner wall of the fixed box is fixedly connected with a filtering and collecting box, the inner wall of the fixed box is fixedly connected with a heater, the side pipeline of the heater is connected with a heat conduction pipe, the surface pipeline of the filtering and collecting box is connected with two discharge pipes, the surface pipeline of the reaction tank is connected with a first exhaust pipe, the surface pipeline of the reaction tank is connected with a second exhaust pipe, the surface pipeline of the reaction tank is connected with a raw material injection pipe, the inside of the fixed box is provided with a cleaning mechanism which can clean the filter plate and a dismounting mechanism which can conveniently dismount the filter plate, the inner wall of the reaction tank is fixedly connected with a weir plate, a plurality of groups of phase-variable lifting mechanisms for improving the height of the weir plate are arranged in the reaction tank, in the scheme, the filter plate can be cleaned in the process of purifying propylene and propane in the reflux tank through the cleaning mechanism, the filter holes on the surface of the filter plate are cleaned under the condition that the reaction tank is not integrally dismantled, thereby improving the evaporation capacity, then taking out the filter plate from the inside of the reaction tank by utilizing the disassembly mechanism for replacement and maintenance after long-time working operation or before reaction production, improving the filtering quality, thereby improving the purification quality, and finally utilizing the opening and closing effect formed by a plurality of groups of lifting mechanisms, the height of the weir plate arranged in the inner part of the reaction tank is adjusted, so that the optimized heightening of the weir plate area is realized in a phase-changing manner, thereby preventing the liquid level in the reaction tank from fluctuating to create a risk that liquid in the shell will overflow the weir plate.
Further, the fixed surface of retort is connected with first fixed frame, and is a plurality of raise the mechanism and all arrange along the outside of first fixed frame in proper order, the multiunit is raised the mechanism and all is included a plurality of first bull sticks, and is a plurality of first bull stick all rotates the inner wall of connecting in first fixed frame, and all rotates the inner wall that runs through in the retort, and is a plurality of the fixed cover in surface of first bull stick is equipped with the hinge, and is a plurality of the surface of retort is all hugged closely to the hinge, and a plurality of hinges closely laminate under the parallel state, and are a plurality of the edge of hinge all hugs closely with the inner wall of retort, and a plurality of hinges carry out the opening and shutting motion under the cooperation of a plurality of first bull sticks, follow supreme raising in proper order behind the holding level state with a plurality of hinges highly carry out the looks with the weir plate, and the inner wall of retort is hugged closely to the edge, and then prevent that liquid from flowing to next door reaction chamber through the clearance of a plurality of hinges in the retort.
Further, every the equal fixedly connected with head rod in side of first bull stick, two slide bars of outside fixedly connected with of first fixed frame, two the surperficial sliding connection of slide bar has the fixture block, the fixed cover in surface of head rod is equipped with first gear, first gear is connected with the fixture block meshing, when needing rotatory first bull stick, outwards or the inside meshing relation contact that makes fixture block and first gear along the surface of two slide bars promotes the fixture block, can rotate first bull stick through rotatory head rod afterwards, and first bull stick drives the hinge afterwards and rotates.
Further, the side fixedly connected with hand wheel of head rod, the looks of first fixed frame and fixture block is close to two first springs of fixedly connected with, two the surface of two slide bars is located to first spring cover respectively, and rotatory hand wheel can drive the head rod and rotate, loosens when the angle of first bull stick is accomplished in the adjustment and just presses the fixture block, and the fixture block receives under the effect of the elastic recovery power of two first springs can be connected the fixture block with first gear engagement again, and the fixture block locks the primary tooth wheel this moment and prevents the rotation once more of head rod.
Further, clean mechanism includes the fixed block, the inner wall fixedly connected with fixed block of fixed case, the side fixedly connected with motor of fixed block, the output shaft fixedly connected with second gear of motor, the side of fixed block is rotated and is connected with two second bull sticks, two the fixed cover in surface of second bull stick is all equipped with third gear and two half gears, two the third gear all is connected with the meshing of second gear, when needing to clean the surface of filter, the starter motor, the output shaft of motor drive second gear and rotate, and the second gear drives two third gears and rotates simultaneously, and two third gears drive two second bull sticks respectively and rotate in the side of fixed block, and two second bull sticks drive two half gears rotatory afterwards.
Furthermore, the inner wall sliding connection of fixed case has the brush pole, the side fixedly connected with two-sided rack of brush pole, two-sided rack and two half-gear mesh in turn, the surface of filter is hugged closely to the brush pole, meshes in turn two-sided rack after two half-gear rotations, and two-sided rack connection is at the side of brush pole, and the brush pole slides and prescribes a limit to at the inner wall of fixed case, and two-sided rack can keep fixed in the orbit of the alternative meshing of two half-gear this moment, and two half-gear will drive the brush pole to slide left and right in the inner wall of fixed case in the alternative meshing of two half-gear makes the brush pole clean the filtration pore on filter surface at the purification in-process afterwards to improve evaporation capacity.
Further, the disassembling mechanism comprises two second fixing frames, wherein the two second fixing frames are fixedly connected with the top surface of the fixing box, the inner walls of the two second fixing frames are connected with the clamping blocks in a sliding mode, the two clamping blocks penetrate through the side ends of the filter plate in a sliding mode, the inner walls of the two second fixing frames are penetrated with pull rods in a sliding mode, the two pull rods are fixedly connected with the two clamping blocks respectively, the inner walls of the two second fixing frames and the two clamping blocks are close to each other and fixedly connected with second springs, the two second springs are sleeved on the surfaces of the two pull rods respectively, the side ends of the pull rods are fixedly connected with second connecting rods respectively, a clearance groove is formed in the side surface of the filter plate and matched with the heat conducting pipes, the efficacy of the filter plate is reduced after long-time reaction, the second connecting rods are outwards pulled out, the two pull rods are driven to be outwards pulled out by the second connecting rods, the two clamping blocks are driven to be separated from the side ends of the filter plate respectively, the filter plate can be pulled out from the top surface of the fixing box at the moment, the filter plate is re-inserted into the fixing box again, the fixing box at the moment, the second connecting rods are loosened, and the elastic clamping blocks are connected with the filter plate, and the filter plate is easily locked with the filter plate in a restoring force of the filter plate.
Furthermore, the surface pipeline of retort is connected with the collection flow box, the collection flow box with be located the discharge pipe connection of downside, raw materials injection pipe and external branch propane propylene mixture discharge pipe connection converge the flow box and can regard as the reaction unit raw materials to being in the left methyl alcohol of weir plate to be connected respectively through pipeline and the discharge pipe that is located the downside and carry to the collection of filtering in the collection box.
Further, first blast pipe is connected with the discharge pipe pipeline that is located the upside, second blast pipe and external propane collecting tank pipe connection, second blast pipe horizontal position is less than first blast pipe, because propylene, nitrogen gas mixture are bigger to the density ratio of propane, and then propylene, nitrogen gas mixture float and discharge along with the first blast pipe on upper portion at the upper portion of retort, and horizontal displacement is less than the second blast pipe of first blast pipe then collect the propane and arrange the propane collecting tank that the outside set up and collect.
A method for purifying a reflux tank of a rectifying tower comprises the following steps:
s1, taking out a filter plate through a disassembly mechanism before reaction starts to check the filtering effect;
s2, then discharging a part of propane-propylene mixture (mixed carbon three for short) periodically from a reflux tank V-of the propylene rectifying tower into the reaction tank through the connection with a raw material injection pipe, and then starting a heat-conducting pipe to heat and purify the propane-propylene mixture so as to reduce the content of propane in the circulating propylene.
S3, starting a cleaning mechanism in the reaction process, and cleaning the filtering holes on the surface of the filtering plate constantly to keep the filtering effect;
s4, in the reaction process, continuously lifting the horizontal line of the mixed liquid on the right side of the weir plate in the reaction tank along with continuous accumulation of the horizontal line, namely starting a lifting mechanism from bottom to top in sequence to lift the horizontal line of the weir plate in a phase-changing manner;
and S5, floating the alkene-nitrogen mixture on the upper part of the reaction tank along with the progress of the reaction, discharging the alkene-nitrogen mixture along with a first exhaust pipe on the upper part, collecting propane by a second exhaust pipe horizontally displaced lower than the first exhaust pipe, discharging the collected propane to a propane collecting tank arranged outside, and collecting the propane.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
1. the invention can clean the filter plate in the process of purifying propylene and propane in the reflux tank by arranging the cleaning mechanism, and cleans the filter holes on the surface of the filter plate under the condition of not integrally removing the reaction tank, thereby improving the evaporation capacity.
2. According to the invention, the disassembly mechanism is arranged, so that the filter plate is taken out from the inside of the reaction tank for replacement and maintenance after long-time operation or before reaction production, the filtering quality is improved, and the purification quality is further improved.
3. According to the invention, through the arrangement of the plurality of groups of lifting mechanisms and the opening and closing effect formed by the plurality of groups of lifting mechanisms, the height of the weir plate arranged in the inner part of the reaction tank is adjusted, and the phase change is carried out on the optimized heightening of the weir plate region, so that the liquid level fluctuation in the reaction tank is prevented, the risk that liquid in the shell overflows from the weir plate is caused, the problems of reduced evaporation capacity, dry burning of the tube bundle and the like are caused.
Drawings
FIG. 1 is a schematic front view of a purification apparatus of a reflux drum of a rectification column according to the present invention;
FIG. 2 is a side view of a rectifying tower reflux drum purification apparatus of the present invention;
FIG. 3 is an exploded view of a rectifying tower reflux drum purification apparatus of the present invention;
FIG. 4 is a schematic view of a lifting mechanism of a purification apparatus of a reflux drum of a rectification column according to the present invention;
FIG. 5 is an enlarged view of the elevating mechanism of the purification device of the reflux drum of the rectification tower according to the present invention;
FIG. 6 is a schematic diagram of a hinge of a purification device of a reflux tank of a rectification tower according to the present invention;
FIG. 7 is a cross section of a fixed box of a purification device of a reflux tank of a rectification tower;
FIG. 8 is an enlarged view of a second fixed frame of a rectifying tower reflux drum purifying device according to the present invention;
fig. 9 is a schematic diagram of a heat pipe of a purification device of a reflux tank of a rectification tower.
The reference numbers in the figures illustrate:
1. a fixing leg; 2. a reaction tank; 3. a raw material injection pipe; 4. a filtering and collecting box; 5. a discharge pipe; 6. a first exhaust pipe; 61. a second exhaust pipe; 7. a first fixed frame; 8. a first rotating lever; 9. a hinge; 10. a first connecting rod; 11. a hand wheel; 12. a slide bar; 13. a clamping block; 14. a first spring; 15. a first gear; 16. a weir plate; 17. a fixed box; 18. a filter plate; 19. a second fixed frame; 20. a clamping block; 21. a pull rod; 22. a second spring; 23. a heater; 24. a heat conducting pipe; 25. a fixed block; 26. a second rotating rod; 27. a motor; 28. a second gear; 29. a third gear; 30. a half gear; 31. a brush rod; 32. a double-sided rack; 33. an empty avoiding groove; 34. a second connecting rod; 35. a combiner box.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example 1:
referring to fig. 1 to 9, a purification device for a reflux tank of a rectification tower comprises two fixing legs 1, a reaction tank 2 is fixedly connected to the top surfaces of the two fixing legs 1, a fixing box 17 is fixedly connected to one side of the reaction tank 2, a filter plate 18 is slidably connected to the top surface of the fixing box 17, a filter collecting box 4 is fixedly connected to the inner wall of the fixing box 17, a heater 23 is fixedly connected to the inner wall of the fixing box 17, a heat conducting pipe 24 is connected to the side pipeline of the heater 23, two discharge pipes 5 are connected to the surface pipeline of the filter collecting box 4, a first discharge pipe 6 is connected to the surface pipeline of the reaction tank 2, a second discharge pipe 61 is connected to the surface pipeline of the reaction tank 2, a raw material injection pipe 3 is connected to the surface pipeline of the reaction tank 2, a cleaning mechanism capable of cleaning the filter plate 18 and a disassembling mechanism capable of conveniently disassembling the filter plate 18 are arranged inside the fixing box 17, a weir plate 16 is fixedly connected to the inner wall of the reaction tank 2, the inside of the reaction tank 2 is provided with a plurality of groups of lifting mechanisms which can change phases and improve the height of the weir plate 16, the filter plate 18 can be cleaned in the process of purifying propylene and propane in the reflux tank through the cleaning mechanism in the scheme, the filter holes on the surface of the filter plate 18 are cleaned without integrally removing the reaction tank 2, thereby improving the evaporation capacity, then the filter plate 18 is taken out from the inside of the reaction tank 2 for replacement and maintenance by utilizing a dismounting mechanism after long-time working operation or before reaction production, the filtering quality is improved, further the purifying quality is improved, finally, the opening and closing effect formed by the plurality of groups of lifting mechanisms is utilized to carry out height adjustment on the weir plate 16 arranged in the reaction tank 2, further the weir plate 16 area is optimized and heightened in a phase-changing manner, thereby preventing the liquid level in the reaction tank 2 from fluctuating, creating a risk that liquid within the shell will overflow the weir plate 16.
Wherein, retort 2's first fixed frame 7 of fixed surface is connected with, a plurality of mechanisms of raising all arrange in proper order along the outside of first fixed frame 7, the multiunit is raised the mechanism and all is included a plurality of first bull stick 8, a plurality of first bull stick 8 all rotate and are connected in the inner wall of first fixed frame 7, and all rotate the inner wall that runs through in retort 2, the equal fixed cover in surface of a plurality of first bull stick 8 is equipped with hinge 9, retort 2's surface is all hugged closely to a plurality of hinges 9, and a plurality of hinges 9 closely laminate under parallel state, the edge of a plurality of hinges 9 all hugs closely with retort 2's inner wall, a plurality of hinges 9 carry out the opening and shutting motion under a plurality of first bull stick 8's cooperation, follow supreme in proper order with a plurality of hinges 9 keep behind the horizontality behind the phase to highly changing with weir plate 16 raising, and retort 2's inner wall is hugged closely to the edge of a plurality of hinges 9, and then prevent that retort 2 internal liquid from flowing to next door through a plurality of hinges 9's clearance.
Wherein, the equal fixedly connected with first connecting rod 10 of side of every first bull stick 8, two slide bars 12 of outside fixedly connected with of first fixed frame 7, the surperficial sliding connection of two slide bars 12 has fixture block 13, the fixed cover in surface of first connecting rod 10 is equipped with first gear 15, first gear 15 is connected with the fixture block 13 meshing, when needing rotatory first bull stick 8, outwards or inwards promote the meshing relation contact that makes fixture block 13 and first gear 15 along the surface of two slide bars 12 with fixture block 13, can rotate first bull stick 8 through rotatory first connecting rod 10 afterwards, first bull stick 8 drives hinge 9 afterwards and rotates.
The side end of the first connecting rod 10 is fixedly connected with a hand wheel 11, the first fixing frame 7 is fixedly connected with two first springs 14 close to the fixture block 13, the two first springs 14 are respectively sleeved on the surfaces of the two sliding rods 12, the hand wheel 11 can be rotated to drive the first connecting rod 10 to rotate, the fixture block 13 is loosened when the angle of the first rotating rod 8 is adjusted, the fixture block 13 can be meshed with the first gear 15 again under the action of the elastic restoring force of the two first springs 14, and the first gear 15 is locked by the fixture block 13 to prevent the first connecting rod 10 from rotating again.
Wherein, clean mechanism includes fixed block 25, the inner wall fixedly connected with fixed block 25 of fixed box 17, the side fixedly connected with motor 27 of fixed block 25, the output shaft fixedly connected with second gear 28 of motor 27, the side of fixed block 25 is rotated and is connected with two second bull sticks 26, the equal fixed cover in surface of two second bull sticks 26 is equipped with third gear 29 and two half-gears 30, two third gears 29 all are connected with the meshing of second gear 28, when needing to clean the surface of filter 18, starter motor 27, the output shaft of motor 27 drives second gear 28 and rotates, second gear 28 drives two third gears 29 and rotates simultaneously, two third gears 29 drive two second bull sticks 26 respectively and rotate in the side of fixed block 25, two second bull sticks 26 drive two half-gears 30 rotatory afterwards.
Wherein, the inner wall sliding connection of fixed case 17 has brush pole 31, the side fixedly connected with two-sided rack 32 of brush pole 31, two-sided rack 32 and two half-gear 30 mesh in turn, brush pole 31 hugs closely the surface of filter 18, two half-gear 30 rotate back mesh in turn to two-sided rack 32, and two-sided rack 32 is connected at the side of brush pole 31, brush pole 31 slides and prescribes a limit to at the inner wall of fixed case 17, two-sided rack 32 can keep fixed in the orbit of two half-gear 30's mesh in turn at this moment, two half-gear 30 will drive brush pole 31 to slide left and right in the inner wall of fixed case 17 to two-sided rack 32 mesh in turn makes brush pole 31 clean the filtration pore on filter 18 surface in purification process, thereby improve the evaporation capacity.
Wherein, the disassembly body includes two fixed frames 19 of second, the top surface of the fixed case 17 of the equal fixedly connected with of two fixed frames 19 of second, the equal sliding connection of inner wall of two fixed frames 19 has joint piece 20, two joint pieces 20 all slide and run through in the side of filter 18, the equal sliding penetration of inner wall of two fixed frames 19 has pull rod 21, two pull rod 21 respectively with two joint piece 20 fixed connection, the inner wall of two fixed frames 19 and the equal fixedly connected with second spring 22 of the near-end that leans on of two joint pieces 20 mutually, two second spring 22 overlap respectively in the surface of two pull rod 21, the side fixedly connected with second connecting rod 34 of two pull rod 21, clearance groove 33 has been seted up to the side of filter 18, clearance groove 33 and heat pipe 24 phase-match, the efficiency ability of filter 18 descends after long-time reaction, take second connecting rod 34 outward out, second connecting rod 34 drives two pull rod 21 and pulls out outward, two pull rod 21 drive two joint pieces 20 respectively and break away from the side of filter 18 this moment, 18 can be taken out from the top surface of fixed case 17 and change later, the fixed filter 18 returns the elastic connection pole of two joint pieces 18 and get the joint piece and get the restoring force of second push away easily this moment.
Wherein, the surface pipe connection of retort 2 has collection flow box 35, and collection flow box 35 and the discharge pipe 5 pipe connection that is located the downside, and raw materials injection pipe 3 and external branch propane propylene mixture discharge pipe connection converge flow box 35 can regard as the reaction unit raw materials to being located the left methyl alcohol of weir plate 16 to be connected respectively and be carried to and collect in filtering collection box 4 through pipeline and the discharge pipe 5 that is located the downside.
Wherein, first blast pipe 6 and the discharge pipe 5 pipe connection that is located the upside, second blast pipe 61 and external propane collecting tank pipe connection, second blast pipe 61 horizontal position is less than first blast pipe 6, because propylene, nitrogen gas mixture are to the density ratio of propane comparatively, and then propylene, nitrogen gas mixture float and discharge along with the first blast pipe 6 on upper portion at retort 2 upper portion, and horizontal displacement is less than second blast pipe 61 of first blast pipe 6 then collect the propane and arrange the propane collecting tank that the outside set up and collect.
The using method comprises the following steps: when the invention is used, before the reaction starts, the second connecting rod 34 is drawn out, the second connecting rod 34 drives the two pull rods 21 to be drawn out, then the two pull rods 21 respectively drive the two clamping blocks 20 to be separated from the side ends of the filter plate 18, at the moment, the filter plate 18 can be drawn out from the top surface of the fixed box 17 for replacement, then the replaced filter plate 18 is inserted back into the fixed box 17 again, at the moment, the second connecting rod 34 is loosened, the two clamping blocks 20 are pushed back to be clamped with the filter plate 18 again under the elastic restoring force of the two second springs 22, at the moment, the filter plate 18 is locked and placed to slide easily, then a part of propane-propylene mixture (mixed carbon III) is discharged into the reaction tank 2 through the connection with the raw material injection pipe 3 at regular intervals in the reflux tank V-2007 of the propylene rectifying tower, then the heat conduction pipe 24 is started to heat and purify the propane-propylene mixture so as to reduce the propane content in the circulating propylene, in the reaction process, the motor 27 is started, the output shaft of the motor 27 drives the second gear 28 to rotate, the second gear 28 drives the two third gears 29 to rotate simultaneously, the two third gears 29 respectively drive the two second rotating rods 26 to rotate on the side surfaces of the fixed block 25, the two second rotating rods 26 then drive the two half gears 30 to rotate, the two half gears 30 rotate and then alternately engage the double-sided racks 32, the double-sided racks 32 are connected to the side ends of the brush rods 31, the brush rods 31 slide on the inner wall of the fixed box 17 to be limited, at this time, the double-sided racks 32 can be kept fixed in the alternately engaged tracks of the two half gears 30, and then the alternate engagement of the two half gears 30 on the double-sided racks 32 drives the brush rods 31 to slide left and right in the inner wall of the fixed box 17 so that the brush rods 31 clean the filter holes on the surface of the filter plate 18 in the purification process, in the reaction process, along with the continuous lifting of the horizontal line of piling up of the mixed liquid on the right side of the weir plate 16 in the reaction tank 2, namely, the fixture block 13 is pushed outwards or inwards along the surfaces of the two sliding rods 12 from bottom to top in sequence to enable the fixture block 13 to be in contact with the meshing relation of the first gear 15, then the first connecting rod 10 can be rotated to rotate the first rotating rod 8, the hinge 9 is driven by the first rotating rod 8 to rotate, the first connecting rod 10 can be driven to rotate by the rotating hand wheel 11, the fixture block 13 is loosened when the angle of the first rotating rod 8 is adjusted, the fixture block 13 can be meshed with the first gear 15 again under the action of the elastic restoring force of the two first springs 14, so that the horizontal line of the weir plate 16 is lifted in a variable manner, along with the reaction, the alkene and nitrogen mixture floats on the upper portion of the reaction tank 2 and is discharged along with the first exhaust pipe 6 on the upper portion, and the second exhaust pipe 61 with the horizontal displacement lower than the first exhaust pipe 6 collects propane and discharges the propane to the propane collection tank arranged outside for collection.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a rectifying column reflux drum purification device, includes two fixed feet (1), its characterized in that: two top surface fixed connection retort (2) of fixed foot (1), one side fixedly connected with fixed case (17) of retort (2), the top surface sliding connection of fixed case (17) has filter (18), the inner wall fixedly connected with of fixed case (17) filters collecting box (4), the inner wall fixedly connected with heater (23) of fixed case (17), the side pipe connection of heater (23) has heat pipe (24), the surface pipe connection of filtering collecting box (4) has two discharge pipes (5), the surface pipe connection of retort (2) has first discharge pipe (6), the surface pipe connection of retort (2) has second discharge pipe (61), the surface pipe connection of retort (2) has raw materials injection pipe (3), the inside setting of fixed case (17) can carry out clear clean mechanism and the convenient dismantlement mechanism of dismantling filter (18) to filter (18), the inner wall fixedly connected with of retort (2) has weir plate (16), the inside of retort (2) is provided with the variable high-phase lifting mechanism of multiunit (16).
2. The purification device of the reflux drum of the rectification tower as claimed in claim 1, wherein: the fixed surface of retort (2) is connected with first fixed frame (7), and is a plurality of raise the mechanism and all arrange in proper order along the outside of first fixed frame (7), the mechanism is raised to the multiunit and all includes a plurality of first bull stick (8), and is a plurality of first bull stick (8) all rotate the inner wall of connecting in first fixed frame (7), and all rotate the inner wall that runs through retort (2), and is a plurality of the fixed cover in surface of first bull stick (8) is equipped with hinge (9), and is a plurality of the surface of retort (2) is all hugged closely in hinge (9), and a plurality of hinges (9) closely laminate under parallel state, and are a plurality of the edge of hinge (9) all hug closely with the inner wall of retort (2).
3. The purification device for the reflux drum of the rectification tower as claimed in claim 2, wherein: every equal fixedly connected with head rod (10) in side of first bull stick (8), two slide bars (12) of outside fixedly connected with of first fixed frame (7), two the surperficial sliding connection of slide bar (12) has fixture block (13), the fixed cover in surface of head rod (10) is equipped with first gear (15), first gear (15) are connected with fixture block (13) meshing.
4. The purification device of the reflux drum of the rectification tower as claimed in claim 3, wherein: the side fixedly connected with hand wheel (11) of first connecting rod (10), the fixed end that is close to mutually of first fixed frame (7) and fixture block (13) is connected with two first springs (14), two the surface of two slide bars (12) is located respectively in first spring (14) cover.
5. The purification device of the reflux drum of the rectification tower as claimed in claim 1, wherein: clean mechanism includes fixed block (25), inner wall fixedly connected with fixed block (25) of fixed case (17), side fixedly connected with motor (27) of fixed block (25), output shaft fixedly connected with second gear (28) of motor (27), the side of fixed block (25) is rotated and is connected with two second bull sticks (26), two the equal fixed cover in surface of second bull stick (26) is equipped with third gear (29) and two semi-gear (30), two third gear (29) all are connected with second gear (28) meshing.
6. The purification device of the reflux drum of the rectification tower as claimed in claim 5, wherein: the inner wall of the fixed box (17) is connected with a brush rod (31) in a sliding mode, the side face of the brush rod (31) is fixedly connected with a double-sided rack (32), the double-sided rack (32) is meshed with the two half gears (30) in an alternating mode, and the brush rod (31) is tightly attached to the surface of the filter plate (18).
7. The purification device of the reflux drum of the rectification tower as claimed in claim 1, wherein: the disassembling mechanism comprises two second fixing frames (19), the two top surfaces of the second fixing frames (19) and the fixing boxes (17) are fixedly connected with the inner walls of the second fixing frames (19), the two clamping blocks (20) are connected with the inner walls of the second fixing frames (19) in a sliding mode and penetrate through the side ends of the filter plates (18), the two pull rods (21) penetrate through the inner walls of the second fixing frames (19) in a sliding mode, the two pull rods (21) are fixedly connected with the two clamping blocks (20) respectively, the two inner walls of the second fixing frames (19) and the two clamping blocks (20) are close to the near-end and fixedly connected with second springs (22), the two second springs (22) are sleeved on the surfaces of the two pull rods (21) respectively, the two side ends of the pull rods (21) are fixedly connected with second connecting rods (34), the side faces of the filter plates (18) are provided with clearance grooves (33), and the clearance grooves (33) are matched with the heat conduction pipes (24).
8. The purification device of the reflux drum of the rectification tower as claimed in claim 7, wherein: the surface pipeline of retort (2) is connected with collection flow box (35), collection flow box (35) and discharge pipe (5) pipe connection that are located the downside, raw materials injection pipe (3) and the outside branch propane propylene mixture discharge pipe connection.
9. The purification device for the reflux drum of the rectification tower as recited in claim 8, wherein: first blast pipe (6) and discharge pipe (5) pipe connection who is located the upside, second blast pipe (61) and external propane holding vessel pipe connection, second blast pipe (61) horizontal position is less than first blast pipe (6).
10. A method for purifying a reflux tank of a rectifying tower is characterized by comprising the following steps: the method comprises the following steps:
s1, taking out a filter plate (18) through a disassembly mechanism before the reaction starts to check the filtering effect;
s2, then discharging a part of propane-propylene mixture (mixed carbon three for short) periodically in a reflux tank V-2007 of the propylene rectifying tower into the reaction tank (2) through the connection with a raw material injection pipe (3), and then starting a heat conduction pipe (24) to heat and purify the propane-propylene mixture so as to reduce the content of propane in the circulating propylene.
S3, starting a cleaning mechanism in the reaction process, and cleaning the filter holes on the surface of the filter plate (18) constantly to keep the filtering effect;
s4, in the reaction process, continuously lifting the horizontal line along with the continuous accumulation of the mixed liquid on the right side of the weir plate (16) in the reaction tank (2), namely sequentially starting a lifting mechanism from bottom to top to phase-change lift the horizontal line of the weir plate (16);
and S5, floating the alkene-nitrogen mixture on the upper part of the reaction tank (2) along with the progress of the reaction, discharging the alkene-nitrogen mixture along with a first exhaust pipe (6) on the upper part, and collecting propane and discharging the collected propane to a propane collecting tank arranged outside through a second exhaust pipe (61) horizontally displaced lower than the first exhaust pipe (6).
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| CN202211549877.7A CN115814445A (en) | 2022-12-05 | 2022-12-05 | Device and method for purifying reflux tank of rectifying tower |
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| CN202211549877.7A CN115814445A (en) | 2022-12-05 | 2022-12-05 | Device and method for purifying reflux tank of rectifying tower |
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| CN115814445A true CN115814445A (en) | 2023-03-21 |
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| CN202211549877.7A Pending CN115814445A (en) | 2022-12-05 | 2022-12-05 | Device and method for purifying reflux tank of rectifying tower |
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Application publication date: 20230321 |