CN203677970U - Re-disperser for packed tower and packed tower - Google Patents
Re-disperser for packed tower and packed tower Download PDFInfo
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- CN203677970U CN203677970U CN201420021838.4U CN201420021838U CN203677970U CN 203677970 U CN203677970 U CN 203677970U CN 201420021838 U CN201420021838 U CN 201420021838U CN 203677970 U CN203677970 U CN 203677970U
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- base plate
- tower
- wall section
- disperser
- thinner wall
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- 239000007791 liquid phase Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000012856 packing Methods 0.000 claims description 20
- 239000012071 phase Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000178 monomer Substances 0.000 abstract description 45
- 238000006116 polymerization reaction Methods 0.000 abstract description 26
- 238000004821 distillation Methods 0.000 abstract description 18
- 230000000630 rising effect Effects 0.000 abstract description 3
- 230000003670 easy-to-clean Effects 0.000 abstract 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 35
- 238000009835 boiling Methods 0.000 description 23
- 239000002585 base Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000003112 inhibitor Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- UBOXGVDOUJQMTN-UHFFFAOYSA-N 1,1,2-trichloroethane Chemical class ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 5
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical class ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007033 dehydrochlorination reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 229960002415 trichloroethylene Drugs 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model aims to provide a re-disperser which is simple in structure and easy to clean. According to the utility model, a packed tower can not be blocked to operate for a long time even if the re-disperser is subjected to polymerization as a monomer of a distillation object, a liquid phase can uniformly distributed to be dropped off. The re-disperser for the packed tower comprises a tower plate 1, a steam rising pipe 10 and an umbrella 11. A plurality of liquid holes 4 are formed in the tower plate 1; an air hole 5 which is elongated and has the same length direction with the liquid holes and larger area than the liquid hole, and is also formed in the tower plate 1; the umbrella 11 is provided with a guide wall 12 forming a liquid path 13; at least one of two ends parts 14 of the liquid path in the length direction is provided with an opening part 15; the opening part is formed at a position that the liquid drained from the opening part can drop to the outer side of the steam rising pipe.
Description
Technical field
The utility model relates to the disperser again using in packed tower and (is also known as " dispersion plate again " or " distributor ".) and use this packed tower of disperser again.
Background technology
Destilling tower is classified into plate column conventionally, and (reference example is as patent documentation 1～3.) and packed tower (reference example is as patent documentation 4～6.)。
As shown in patent documentation 6, in order to distill efficiently, sometimes at the top of packed tower configuration disperser.This disperser for make liquid phase spread to equably below packing layer arrange.In addition, as shown in patent documentation 5 or 7, then disperser is configured between packing layer, and its object is that liquid phase is distributed equably and drops to the packing layer of below.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2004-130232 communique
Patent documentation 2: TOHKEMY 2000-300903 communique
Patent documentation 3: TOHKEMY 2005-60331 communique
Patent documentation 4: TOHKEMY 2001-113101 communique
Patent documentation 5: Japanese kokai publication hei 09-239202 communique
Patent documentation 6: TOHKEMY 2011-206681 communique
Patent documentation 7: Japanese kokai publication hei 11-9901 communique
The content of utility model
The problem that utility model solves
In the time of distillation vinylidene chloride monomer, there is the problem of vinylidene chloride monomer polymerization in destilling tower.Vinylidene chloride reactwity of monomer is high, easy polymerization (polymerization in destilling tower.) change, so will add polymerization inhibitor.But to prevent that the polymerization in destilling tower from being very difficult completely.For example be envisioned that, just can be suppressed at the polymerization in destilling tower if add a large amount of polymerization inhibitors.Because polymerization inhibitor boiling point is high, so conventionally can transfer to hardly gas phase side (the vinylidene chloride monomer side distilling out).Therefore can think, in the time that manufacture vinylidene chloride is resin, almost just not have the polymerization obstacle being caused by this polymerization inhibitor.But there is the accidents such as overflow in distillation time, in the vinylidene chloride monomer distilling out, just likely can sneak into polymerization inhibitor.Thereby, or wish to avoid using in a large number polymerization inhibitor.
When there is the polymerization of vinylidene chloride monomer in destilling tower time, the gas that Polymer Gas changes into and the liquid being liquefied as can stop up stream, make distillation (purifying) Efficiency Decreasing.Particularly, in industrial continuous still, there are the prune job problems that reduce the duration of runs many, distillation consuming time for removing polymer.The redistributor for example proposing in patent documentation 7, because the configuration in the hole of the hole in dispenser grooves and tower tray is different, so exist the distribution of liquid phase easily to produce uneven problem.In the easily situation of the liquid of polymerization such as distillation vinylidene chloride monomer, if the hole of a part is blocked, will exist the distribution of liquid phase to become more inhomogeneous problem.In addition,, due to complex structure, so exist, polymerization is attached to the problem that the material on each parts is removed (removing) expend energy on.And then in patent documentation 6 propose disperser, although hole evenly configure, because the liquid phase on the positive top of passage easily flows to tower wall side, so even if hole evenly configures, also there is the problem of the maldistribution of liquid phase.
So the purpose of this utility model is to provide one disperser again, even there is polymerization as the monomer of distillation object in packed tower, it also can not stop up the long-time steady running in ground, and can make liquid phase distribute equably whereabouts, so simple in structure, easily cleaning.In addition, another object is to provide and has this packed tower of disperser again.And another object of the present utility model is, provide by use have this again disperser packed tower for a long time, stably the crude monomer of vinylidene chloride is distilled, and efficiently obtain the purification process of purifying monomer.
Solve the means of problem
Packed tower of the present utility model disperser again, be arranged on the packed tower disperser again of the packing layer below of packed tower, it has: tower tray, on it, alignment arrangements has multiple for making liquid phase lead to the liquid-through hole of below, and alignment arrangements to have length direction be same direction, lead to multiple passages of top for making gas phase, described this liquid-through hole of passage Area Ratio is large, and be elongated shape, the multiple vapor uptakes that configure upward from above-mentioned each passage respectively, and at the upper side of the upper end open portion of this vapor uptake, the umbrella configuring with interval with this upper end open portion, described parachute kit has the shape identical with this upper end open portion or than its larger shape, described packed tower uses disperser to be characterised in that again, described umbrella has the wall of leading that forms liquid flow path along described length direction at the umbrella cover of this umbrella, this liquid flow path has peristome at least either party at the both ends of described length direction, this peristome is formed on the position that can make the liquid phase of discharging from this peristome drop to the outside of described vapor uptake.
Packed tower of the present utility model disperser again, the upper end of preferred described vapor uptake has notch part.By like this, even as the monomer generation polymerization of distillation object, liquid-through hole is blocked, and liquid phase also can be easily from passage to whereabouts.
Packed tower of the present utility model disperser again, also can make the length of the length direction of described umbrella, identical or longer than it with the length of the major diameter direction of the upper end open portion of described vapor uptake, described peristome is formed on leads on wall, or does not arrange and lead wall and form.Umbrella and the effect of leading wall performance liquid trap, can make the liquid phase of collecting to dropping on tower tray rather than falling in passage.Can make like this to fall liquid phase on the tower tray filling bed that falls downwards by liquid-through hole that is situated between.
Packed tower of the present utility model disperser again, described in the Length Ratio of the length direction of preferred described umbrella, the length of the major diameter direction of the upper end open portion of vapor uptake is long, and described peristome is formed at the umbrella cover of umbrella and is configured in the superjacent air space in outside of described vapor uptake.Umbrella and the effect of leading wall performance liquid trap, can make the liquid phase of collecting to dropping on tower tray rather than falling in passage.Can make like this to fall liquid phase on the tower tray filling bed that falls downwards by liquid-through hole that is situated between.
Packed tower of the present utility model disperser again, preferred described tower tray has base plate, the side wall portion of erectting the edge that is arranged on this base plate and the jaw portion of stretching out to sidewall lateral direction from the upper end of this side wall portion.Can make like this to be stoped by jaw portion along the dirty liquid phase of the inside side walls of packed tower, import tower tray, result, can make the liquid phase falling from liquid-through hole leave the inside side walls of packed tower.So just can increase the gas-liquid contact chance in packing layer.
Packed tower of the present utility model disperser again, the upper end of preferred described liquid flow path is positioned at the low position than described jaw portion.Operation can make like this to take out again disperser from packed tower time becomes easy.In addition, even as the monomer generation polymerization of distillation object, also can will be again disperser polymer is taken out together in taking out.
Packed tower of the present utility model disperser again, the base plate of preferred described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, be the thickness identical with base plate, form connecting portion simultaneously.Can make again like this disperser to the installation in packed tower and therefrom take out and become easy.In addition, can, in guaranteeing base plate flatness, also can guarantee sealing even base plate is fixed to one another without screw.
Packed tower of the present utility model, is characterized in that, is to dispose the packed tower of the present utility model packed tower of disperser again, and the ratio (H/D) of the tower inner height H of described packed tower and tower inner diameter D is more than 20.
The distillating method of vinylidene chloride monomer of the present utility model, is characterized in that, use has packed tower of the present utility model and uses the packed tower of disperser again or use packed tower of the present utility model, the crude monomer of vinylidene chloride is distilled, obtain purifying monomer.
Utility model effect
By using disperser more of the present utility model, even there is polymerization as the monomer of distillation object in packed tower, packed tower is also not easy to stop up, steady running for a long time.In addition, can make liquid phase fall after uniform distribution, improve distillation efficiency.And then due to simple in structure, so cleaning easily.In addition, packed tower of the present utility model, in the time that H/D is large, packed tower is elongated shape, in the situation of this shape, it is more that the liquid flowing down along the inwall of packed tower can become, so just can reduce these liquid by configuring packed tower of the present utility model disperser again, increase the gas-liquid contact in packing layer.By the distillating method of vinylidene chloride monomer of the present utility model, can distill the vinylidene chloride monomer that polymerization easily occurs in distillation steadily in the long term.Thereby can efficiently obtain purifying monomer.
Accompanying drawing explanation
Fig. 1 is the example partial perspective view of disperser again that shows the present embodiment.
Fig. 2 is the example plane of disperser again that shows the present embodiment.
Fig. 3 is the sectional view of A-A.
Fig. 4 is the sectional view of B-B.
Fig. 5 is explanation liquid phase from being formed at liquid flow path the umbrella cover of the umbrella partial perspective view to the situation (the 1st form) falling.
Fig. 6 is explanation liquid phase from being formed at liquid flow path the umbrella cover of the umbrella partial perspective view to the situation (the 2nd form) falling.
Fig. 7 is the sectional view of C-C.
Fig. 8 is the longitudinal cross-section part enlarged drawing of the tower for the installment state of disperser on packed tower is described again.
Fig. 9 is the concept map that shows a routine packed tower of the present embodiment.
Symbol description
1 (1a, 1b, 1c) tower tray
4 liquid-through holes
5 passages
6 (6a, 6b, 6c) base plate
10 vapor uptakes
The upper end open portion of 10a vapor uptake
11 umbrellas
12 lead wall
13 liquid flow paths
14 (14a, 14b) both ends
15 peristomes
16 liquid phases
17 (17a, 17b, 17c) side wall portion
18 (18a, 18b, 18c) jaw portion
19 notch parts
20a, 20b cut-off rule
21b the first thinner wall section
21c the second thinner wall section
22 pillars
23 gas phases
30 packing layers
31 support sector's framves
32 support sectors
33 support rings
34 tower piers
35 tops of tower
36 tower bottoms
37 condensers (reflux condenser)
38 reboilers
L39, L40 pipeline
41 charging apertures
42 bottoms tanks
100 packed towers disperser again
200 packed towers
HW hot water
The specific embodiment
Next, illustrate that embodiment illustrates the utility model, but can not record to limit and explain the utility model with these.As long as can bring into play effect of the present utility model, just can carry out various changes to embodiment.
First, (hereinafter also will only be called " disperser again " to the packed tower of the present embodiment with disperser again with reference to Fig. 1～Fig. 5.) be explained.Disperser 100 has again:
Tower tray 1 (1a, 1b, 1c), on it, alignment arrangements has multiple for making liquid phase 16 lead to the liquid-through hole 4 of below, and alignment arrangements have length direction L be same direction, for make gas phase 23 lead to top multiple passages 5, this liquid-through hole of described passage 5 Area Ratios 4 is large and be elongated shape
The multiple vapor uptakes 10 that configure upward from each passage 5 respectively, and
The umbrella 11 configuring with interval at the upper side of the 10a of upper end open portion of vapor uptake 10, with the 10a of upper end open portion, umbrella 11 has the shape identical with upper end open portion 10 or than its larger shape.
In disperser 100, liquid phase 16 drops on tower tray 1 by peristome 15 again, and this liquid phase 16 by lining up the liquid-through hole 4 of ordered series of numbers and then from tower tray 1 to whereabouts on tower tray 1.Now, liquid phase 16 can be in the case of the impact of the gas phase 23 that do not risen upward, with the state that separates with this gas phase 23 efficiently to whereabouts.And, due to liquid-through hole 4 alignment arrangements on tower tray 1 have multiple, so liquid phase 16 can be with homodisperse state to whereabouts.
Liquid-through hole 4 is the holes that arrange for making liquid phase 16 fall again the below of disperser 100, and around the passage 5 of elongated shape, alignment arrangements is multiple.Preferably by multiple liquid-through holes 4 all uniformly-spaced to line up 1 row, and make the direction of these row and the length direction L of passage 5 consistent.Each area of each Area Ratio passage 5 of liquid-through hole 4 is little.Identical with the area of passage 5 or when larger than it, gas phase can rise from liquid-through hole 4 at the area of liquid-through hole 4, thus hinder liquid phase 16 to fall.The shape of liquid-through hole 4 is preferably circle or ellipse.The circular diameter of liquid-through hole 4 and oval major diameter are for example 5～15mm.And then when configure multiple disperser 100 again in packed tower time, be configured in the area of the liquid-through hole 4 of the disperser again of charging aperture 41 belows of Fig. 9, preferably identical with the each area of liquid-through hole 4 of disperser again that is configured in charging aperture 41 tops, or larger than it.And being more preferably configured in the most each Area Ratio of the liquid-through hole 4 of the disperser again of below, to be configured in each area of liquid-through hole 4 of the disperser again of the top large.This be due to, easily there is the problem of hole plug due to polymerization in the disperser again that is configured in below.
The preferred upper end of vapor uptake 10 has notch part 19.By like this, even as the monomer generation polymerization of distillation object, liquid-through hole 4 stops up, and also can make liquid phase 16 easily land from passage 5 downwards.Shape to notch part 19 is not particularly limited, but in order not hinder gas phase 23 to rise, preferably for example V-shape.Notch part 19 preferably all arranges multiple to every 1 vapor uptake 10, more preferably on the sidewall on the long limit of vapor uptake 10 with impartial arranged spaced.
As shown in Figure 5, peristome 15 is arranged on the discharge outlet of the end of liquid flow path 13, and at least either party who is arranged in the both ends 14 (14a, 14b) of the length direction L of the liquid flow path 13 of Fig. 1 (does not illustrate peristome 15 in Fig. 1.)。Preferably at both ends 14, peristome 15 is all set.Now, liquid flow path 13, as shown in Figure 1, is made up of with the liquid flow path 13b that flows to end 14b side the liquid flow path 13a that flows to end 14a side.By guiding fluid peristome 15, also can make the umbrella cover of umbrella 11 be obliquely installed for effectively, peristome 15 is arranged on to the extreme lower position of inclination.
(the 1st form of peristome)
The 1st form of peristome is described with reference to Fig. 5.The length of the length direction L of umbrella 11, identical or longer than it with the length of the major diameter direction of the 10a of upper end open portion of vapor uptake 10, peristome 15 is formed on leads on wall 12.In the time that the length of the length of length direction L of umbrella 11 and the major diameter direction of the 10a of upper end open portion of vapor uptake 10 is identical, t=0 in Fig. 5, t > 0 in the time that the length of the length direction L of umbrella 11 is longer.If t≤0, it is just little that the liquid phase 16 flowing out from peristome 15 flows to possibility vapor uptake 10.Peristome 15, also can be at both ends 14 (14a, 14b) do not arrange and lead wall 12 and just form.
(the 2nd form of peristome)
The 2nd form of peristome is described with reference to Fig. 6.The length of the major diameter direction of the 10a of upper end open portion of the Length Ratio vapor uptake 10 of the length direction L of umbrella 11 is longer, and peristome 15 is formed on the umbrella cover of umbrella 11.And peristome 15 is configured in the space in the sidewall outside of vapor uptake 10, preferably at the superjacent air space in the sidewall outside of vapor uptake 10.Because the length of the major diameter direction of the 10a of upper end open portion of the Length Ratio vapor uptake 10 of the length direction L of umbrella 11 is longer, so t≤0 in Fig. 6.The superjacent air space that peristome 15 can also be configured in to the outside of the sidewall of the space in the sidewall outside of vapor uptake 10, preferred vapor uptake 10, the possibility that the liquid phase 16 that result flows out from peristome 15 flows to vapor uptake 10 just tails off
The 1st form of peristome 15 and the 2nd form are all by umbrella 11 and lead the effect of wall performance liquid trap, and the liquid phase 16 that can make to collect does not drop in passage 5 but drops on tower tray 1.Dropping to liquid phase 16 on tower tray 1 is situated between to be fallen from disperser 100 again and then to below more by liquid-through hole 4.
Moreover, the preferably hole beyond the umbrella cover of umbrella 11 does not arrange peristome 15.Even if hole is set, because gas phase 23 is from below to rising, its blast makes liquid phase 16 be difficult to fall.
The upper end of liquid flow path 13, lead the upper end of wall 12, be preferably placed at the position lower than jaw portion 18.Can make like this operation when disperser 100 takes out from packed tower again become easy.In addition, even as the monomer generation polymerization of distilling object, because its polymer is present in the accommodation space being formed by base plate 6 and side wall portion 17, so can polymer also be taken out together when disperser 100 takes out again general.
The cut-off rule 20 (20a, 20b) that tower tray 1 is passed through from the region clipping between passage 5 is divided into more than 2.Disperser again 100 shown in Fig. 2 has cut- off rule 20a, 20b, take them as boundary line, can disassemble into 3 tower trays (1a, 1b, 1c).Fig. 7 is the sectional view of the state of the coupling part of display backpanel 6b and base plate 6c.One base plate 6b has the first thinner wall section 21b along cut-off rule 20b in a side of thickness direction, another base plate 6c has the second thinner wall section 21c along cut-off rule 20b at the opposite side of thickness direction, after the first thinner wall section 21b and the second thinner wall section 21c overlap, be identical thickness with base plate 6.Overlap and form connecting portion by the first thinner wall section 21b and the second thinner wall section 21c, fix even without screw, also can prevent that the liquid phase on cut-off rule 20b from leaking.In packed tower, disperser is installed again and it is therefrom taken out and becomes easy.In addition, due to base plate 6 do not produce at cut-off rule 20 places concavo-convex, so can guarantee flatness.
Next, with reference to Fig. 8 and Fig. 9, the packed tower 200 that disposes again disperser 100 is explained.The packed tower 200 of the present embodiment, the ratio (H/D) of the tower inner height H of packed tower 200 and tower inner diameter D is more than 20.Preferably more than 24.Be large like this value by making H/D, can make packed tower be elongated shape, the disperser again 100 of the present embodiment is preferred for the packed tower of elongated shape.In the situation of elongated packed tower, under flow to the liquid in packing layer 30, once flow along the inwall of tower, be just difficult to turn back to center position, the contact of the liquid-gas in packing layer 30 worsens.To forcibly depart from inwall along inwall flowing liquid by disperser 100 again, and can prevent that the touch opportunity of liquid-gas from reducing.
Due to the liquid in tower in whereabouts along inwall side shifting, so as shown in Figure 8, using packing layer 30 and the disperser again 100 that is arranged on packing layer below as a set of, preferably many covers are set being arranged above and below.For example 3～7 covers.
In the packed tower 200 of the present embodiment, also can be below packing layer 30 and again disperser 100 above fluid collection device is set (also referred to as collector.), but due to the disperser again 100 of the present embodiment have again the function of disperser and the function of fluid collection device the two, so fluid collection device is not preferably set.
Disperser again 100 in packed tower 200 and the assembling of packing layer 30 are for example as follows.As shown in Figure 8, support sector turn-takes concurrently and is fixed on the inwall of packed tower 200 with the cross section of tower with frame 31, the support sector 32 that is known as aperture plate with having carried on frame 31, supports net grid, filler support or packing support plate etc. in support sector.Support sector is preferably the continuous type of turn-taking with frame 31.Support sector also can have interrupted part with frame 31.In support sector 32, dispose structured packing or irregularity filler.Structured packing or irregularity filler form packing layer 30.Below packing layer 30 and support sector 32, support ring 33 is turn-taked concurrently and is fixed on the inwall of packed tower 200 with the cross section of tower.On support ring 33, carry again disperser 100.Support ring 33 is preferably the continuous type of turn-taking.Support ring 33 also can have interrupted part.
As shown in Figure 9, packed tower 200 is by multiple tower piers 34 are connected in series and form tower body.Preferred each tower pier 34 all has disperser 100 again.The top of tower 35 of packed tower 200 is situated between and is connected with condenser (reflux condenser) 37 by pipeline L39.Packed tower 200 also can have the line that backflows not illustrating in figure.Tower bottom 36 at packed tower 200 is provided with reboiler 38.Tower bottom 36 is situated between and is communicated with bottoms tank 42 by pipeline L40.Distillation object is fed in tower from charging aperture 41.In the time that the tower inner height of packed tower 200 is made as to " H ", charging aperture 41 is preferably set to the height of 0.3H～0.7H.
The distillating method of vinylidene chloride monomer of the present utility model, uses the packed tower 200 again with disperser 100 that the crude monomer distillation of vinylidene chloride is obtained to purifying monomer.The distillating method of the vinylidene chloride monomer (vinylidene chloride) of the present embodiment, relates to the purifying of the thick vinylidene chloride monomer obtaining after vinylidene chloride monomer is synthetic., this distillating method is to use the packed tower 200 of disperser 100 again of the packed tower with the present embodiment, the crude monomer distillation of vinylidene chloride obtained to the distillating method of purifying monomer.For example 2 packed towers 200 are connected in series.Making the 1st packed tower is the packed tower for removing the low boiling point component that thick vinylidene chloride monomer contains, and making the 2nd packed tower is the packed tower that has reclaimed sublimed vinylidene chloride monomer from removed the thick vinylidene chloride monomer low boiling point component.
In operation 1, supply with thick vinylidene chloride monomer to the 1st packed tower, separate and remove low boiling point component from the top of tower of the 1st packed tower, reclaim from the tower bottom of the 1st packed tower the thick vinylidene chloride monomer of having removed low boiling point component.Next in operation 2, supply with the thick vinylidene chloride monomer of having removed low boiling point component to the 2nd packed tower, reclaim sublimed vinylidene chloride monomer from the top of tower of the 2nd packed tower, reclaim high boiling fraction from the tower bottom of the 2nd packed tower.
The vinylidene chloride monomer distillation method of being undertaken by above-mentioned operation 1 and operation 2 just for example, use in the limit of the packed tower 200 of disperser 100 again, also can be out of shape by the packed tower in use with the present embodiment.For example, also can proceed the operation 3 as the purification procedures same with operation 2.
Vinylidene chloride monomer is (hereinafter also referred to as " VD ".), normally pass through vinyl chloride (hereinafter also referred to as " VC ".) or 1,2-dichloroethanes (hereinafter also referred to as " EDC ".) chlorination becomes 1,1,2-trichloroethanes (hereinafter also referred to as " 112TCE ".), then carry out dehydrochlorination with alkali and synthesize.The purity of the vinylidene chloride monomer in the thick vinylidene chloride monomer after this is synthetic is for for example more than 90 quality %.Impurity is for for example VC, dichloroethylene are (hereinafter also referred to as " DCE ".), trichloro-ethylene is (hereinafter also referred to as " Tricl ".)、112TCE。Low boiling point component be boiling point than the low-boiling composition of VD (31.7 ℃ of boiling points), for example VC (boiling point :-13.7 ℃).Higher boiling composition is the composition that boiling point is higher than VD, for example DCE (47.5～60.4 ℃ of boiling points), Tricl (86.6 ℃ of boiling points), 112TCE (113.3 ℃ of boiling points).
Still-process to VD describes.First be separated into composition and 31.7 ℃ of above compositions (removing of low boiling point component) that boiling point is less than 31.7 ℃.Next, being separated into boiling point is the composition (remaining higher boiling composition, reclaims VD) that 31.7 ℃ of following compositions and boiling point are greater than 31.7 ℃.
In the distillating method of the vinylidene chloride monomer of the present embodiment, preferably in the thick vinylidene chloride monomer of having removed low boiling point component of supplying with the 2nd packed tower, add polymerization inhibitor.Can reduce like this maintenance times of the 2nd packed tower.
Embodiment
Next, enumerate embodiment of the present utility model and describe, but the utility model is not limited by these examples.
(embodiment 1)
In packed tower, use the disperser again shown in Fig. 1～5, distill with the distillating method of vinylidene chloride monomer.The ratio (H/D) of the tower inner height H of Fig. 9 and tower inner diameter D is 20.Result, the obstruction causing also there is not the polymerization in tower by vinylidene chloride monomer during 12 months, can continuous operation.
Claims (16)
1. a disperser again for packed tower, is arranged on the packed tower disperser again of the packing layer below of packed tower, and it has:
Tower tray, on it, alignment arrangements has multiple for making liquid phase lead to the liquid-through hole of below, and alignment arrangements to have length direction be same direction, for making gas phase lead to multiple passages of top, described this liquid-through hole of passage Area Ratio is large and be elongated shape
The multiple vapor uptakes that configure upward from above-mentioned passage respectively, and
The umbrella configuring with interval at the upper side of the upper end open portion of this vapor uptake, with this upper end open portion, described parachute kit has the shape identical with this upper end open portion or than its larger shape,
Described packed tower uses disperser to be characterised in that again,
Described umbrella has the wall of leading that forms liquid flow path along described length direction at the umbrella cover of this umbrella,
This liquid flow path has peristome at least either party at the both ends of described length direction,
This peristome is formed on the position that can make the liquid phase of discharging from this peristome drop to the outside of described vapor uptake.
2. packed tower as claimed in claim 1 disperser again, is characterized in that, the upper end of described vapor uptake has notch part.
3. disperser again for packed tower as claimed in claim 1 or 2, is characterized in that, the length of the length direction of described umbrella is identical or longer than it with the length of the major diameter direction of the upper end open portion of described vapor uptake,
Described peristome is formed on leads on wall, or does not arrange and lead wall and form.
4. packed tower as claimed in claim 1 or 2 disperser again, it is characterized in that, described in the Length Ratio of the length direction of described umbrella, the length of the major diameter direction of the upper end open portion of vapor uptake is long, and described peristome is formed at the umbrella cover of umbrella and is configured in the superjacent air space in outside of described vapor uptake.
5. packed tower as claimed in claim 1 or 2 disperser again, is characterized in that, described tower tray has base plate, the side wall portion of erectting the edge that is arranged on this base plate and the jaw portion of stretching out to sidewall lateral direction from the upper end of this side wall portion.
6. packed tower as claimed in claim 3 disperser again, is characterized in that, described tower tray has base plate, the side wall portion of erectting the edge that is arranged on this base plate and the jaw portion of stretching out to sidewall lateral direction from the upper end of this side wall portion.
7. packed tower as claimed in claim 4 disperser again, is characterized in that, described tower tray has base plate, the side wall portion of erectting the edge that is arranged on this base plate and the jaw portion of stretching out to sidewall lateral direction from the upper end of this side wall portion.
8. packed tower as claimed in claim 5 disperser again, is characterized in that, the upper end of described liquid flow path is positioned at the low position than described jaw portion.
9. the disperser again of the packed tower as described in claim 6 or 7, is characterized in that, the upper end of described liquid flow path is positioned at the low position than described jaw portion.
10. packed tower as claimed in claim 1 or 2 disperser again, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
11. packed towers as claimed in claim 3 disperser again, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
12. packed towers as claimed in claim 4 disperser again, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
13. packed towers as claimed in claim 5 disperser again, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
Disperser again for 14. packed towers as described in claim 6～8, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
15. packed towers as claimed in claim 9 disperser again, it is characterized in that, the base plate of described tower tray is divided into more than 2 by the cut-off rule passing through from the region clipping between described passage, one base plate has the first thinner wall section along described cut-off rule in a side of thickness direction, another base plate has the second thinner wall section along described cut-off rule at the opposite side of thickness direction, described the first thinner wall section and the second thinner wall section overlap, and are the thickness identical with base plate, form connecting portion simultaneously.
16. 1 kinds of packed towers, is characterized in that, are to dispose packed tower described in any one of claim 1～15 packed tower of disperser again, and the ratio H/D of the tower inner height H of described packed tower and tower inner diameter D is more than 20.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013007890A JP6063269B2 (en) | 2013-01-18 | 2013-01-18 | Redisperser for packed tower, packed tower and distillation method of vinylidene chloride monomer |
| JP2013-007890 | 2013-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203677970U true CN203677970U (en) | 2014-07-02 |
Family
ID=50999935
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420021838.4U Expired - Fee Related CN203677970U (en) | 2013-01-18 | 2014-01-14 | Re-disperser for packed tower and packed tower |
| CN201410016100.3A Active CN103933750B (en) | 2013-01-18 | 2014-01-14 | Redispersion device for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410016100.3A Active CN103933750B (en) | 2013-01-18 | 2014-01-14 | Redispersion device for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6063269B2 (en) |
| CN (2) | CN203677970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933750A (en) * | 2013-01-18 | 2014-07-23 | 株式会社吴羽 | Redispersion device for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10973160B2 (en) | 2015-07-29 | 2021-04-06 | Fuji Corporation | Component mounting machine |
| CN106807104A (en) * | 2017-03-22 | 2017-06-09 | 中国石油大学(华东) | A kind of low pressure drop liquid header of suitable large-scale tower |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57136901A (en) * | 1981-02-20 | 1982-08-24 | Mitsui Eng & Shipbuild Co Ltd | Liquid dispersing device for gas-liquid contact device |
| US4432913A (en) * | 1981-08-31 | 1984-02-21 | The Dow Chemical Company | Liquid distributing apparatus and method for a liquid-vapor contact column |
| JPH10137531A (en) * | 1996-11-14 | 1998-05-26 | Nippon Sanso Kk | Liquid collecting and distributing device for packed tower |
| JP3992896B2 (en) * | 1999-02-18 | 2007-10-17 | 株式会社日本触媒 | Non-weired perforated plate, non-weired perforated plate tower, and distillation method |
| CN2456800Y (en) * | 2000-10-16 | 2001-10-31 | 傅春敏 | New collective liquid distributor |
| BRPI0416460B1 (en) * | 2003-11-17 | 2015-12-01 | Mitsubishi Chem Corp | column type equipment for an easily polymerizable compound. |
| US8408026B2 (en) * | 2007-08-21 | 2013-04-02 | Air Products And Chemicals, Inc. | Liquid collector and redistributor for packed columns |
| CN201871365U (en) * | 2010-09-16 | 2011-06-22 | 唐山市鸿霖科技有限公司 | No-clogging linear gas-liquid distributor |
| CN202620759U (en) * | 2011-12-21 | 2012-12-26 | 株式会社吴羽 | Distilling tower system |
| JP6063269B2 (en) * | 2013-01-18 | 2017-01-18 | 株式会社クレハ | Redisperser for packed tower, packed tower and distillation method of vinylidene chloride monomer |
-
2013
- 2013-01-18 JP JP2013007890A patent/JP6063269B2/en active Active
-
2014
- 2014-01-14 CN CN201420021838.4U patent/CN203677970U/en not_active Expired - Fee Related
- 2014-01-14 CN CN201410016100.3A patent/CN103933750B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933750A (en) * | 2013-01-18 | 2014-07-23 | 株式会社吴羽 | Redispersion device for packed tower, packed tower, and method for distilling 1,1-dichloroethylene monomer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103933750A (en) | 2014-07-23 |
| JP2014136212A (en) | 2014-07-28 |
| JP6063269B2 (en) | 2017-01-18 |
| CN103933750B (en) | 2017-04-12 |
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