CN203569038U - Fractionating tower for separation of oil products - Google Patents
Fractionating tower for separation of oil products Download PDFInfo
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- CN203569038U CN203569038U CN201320732406.XU CN201320732406U CN203569038U CN 203569038 U CN203569038 U CN 203569038U CN 201320732406 U CN201320732406 U CN 201320732406U CN 203569038 U CN203569038 U CN 203569038U
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- 238000000926 separation method Methods 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 141
- 239000007921 spray Substances 0.000 claims abstract description 53
- 238000005406 washing Methods 0.000 claims abstract description 37
- 239000000945 filler Substances 0.000 claims description 65
- 238000004821 distillation Methods 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 20
- 238000005194 fractionation Methods 0.000 claims description 20
- 238000000605 extraction Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000004523 catalytic cracking Methods 0.000 abstract description 2
- 238000004939 coking Methods 0.000 abstract description 2
- 238000005504 petroleum refining Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 51
- 239000000047 product Substances 0.000 description 23
- 239000007787 solid Substances 0.000 description 18
- 239000000470 constituent Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 9
- 239000000284 extract Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 238000010992 reflux Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a fractionating tower for separation of oil products in petroleum refining industry, and aims at solving the problems of relatively high fractionating tower, great material consumption, relatively high pressure drop of the whole tower and the like caused by relatively high fractionating section packing of the existing fractionating tower. According to the fractionating tower disclosed by the utility model, a liquid distributor arranged in each fractionating section is a spray type liquid distributor (3) provided with a single-way spray head (8), and the height of the fractionating section packing (5) is 600-1000mm. The liquid distributor arranged in a washing part is the spray type liquid distributor provided with the single-way spray head or two-way spray head, and washing section packing is meshed grille packing (2). The meshed grille packing is at least arranged in two layers, each layer is provided with an oblique channel which is oblique relative to the horizontal plane, and each layer is constituted by a transverse row of strip-shaped plates and a longitudinal row of strip-shaped plates, which are oblique relative to the horizontal plane and mutually intersected. The fractionating tower disclosed by the utility model is mainly used for reduced pressure fractionating towers, normal pressure fractionating towers, catalytic cracking fractionating towers or coking fractionating towers and the like in the petroleum refining industry.
Description
Technical field
The utility model relates to a kind of separation column for oil product separation of refining of petroleum industry.
Background technology
The conventional separation column for oil product separation (for example vacuum fractionation tower) of refining of petroleum industry, comprises cylindrical shell and column internals at present, is divided into feeding part, washing part, fractionation part from bottom to top.Feeding part is provided with gas distributor, and washing part is provided with tank type liquid distributor and is positioned at the washing section filler of tank type liquid distributor below.Distillation stage that fractionation is partly provided with a plurality of (being generally 3～4), each distillation stage is provided with liquid distributor (being generally slot type or spray-type liquid distributor), distillation stage filler and oil header from top to bottom.The subject matter that described separation column exists is: the height of distillation stage filler higher (generally more than 2 meters) in each distillation stage, make the height of separation column higher, cause separation column high material consumption, invest bigger than normally, also make the full tower pressure drop of separation column higher.
Summary of the invention
The purpose of this utility model is to provide a kind of separation column for oil product separation, with solve existing separation column because of the height of distillation stage filler compared with highly making the height of separation column higher, the problem such as high material consumption, full tower pressure drop be higher.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of separation column for oil product separation, comprise cylindrical shell and column internals, be divided into feeding part from bottom to top, washing part, fractionation part, feeding part is provided with gas distributor, washing part is provided with liquid distributor and is positioned at the washing section filler of liquid distributor below, fractionation is partly provided with 3～4 distillation stages, each distillation stage is provided with liquid distributor from top to bottom, distillation stage filler and oil header, it is characterized in that: the set liquid distributor of each distillation stage is the spray-type liquid distributor that is provided with one-way sprayer, the height of distillation stage filler is 600～1000 millimeters, the set liquid distributor of washing part is the spray-type liquid distributor that is provided with one-way sprayer or Bidirectional spray head, washing section filler is groined type gridding grille filler, groined type gridding grille filler at least arranges 2 layers, each layer of groined type gridding grille filler is all with the ramp way tilting with horizontal plane, by tilting with horizontal plane and cross one another horizontally-arranged stripe board and tandem stripe board form, in neighbouring two-layer groined type gridding grille filler, ramp way is staggeredly arranged, horizontally-arranged stripe board and tandem stripe board vergence direction is with respect to the horizontal plane contrary respectively.
The utility model is mainly used as vacuum fractionation tower, atmospheric fractional tower, catalytic cracking fractionating tower or the coking fractional distillation column etc. of refining of petroleum industry.Compared with prior art, employing the utlity model has following beneficial effect: the height of the distillation stage filler that fractionation each distillation stage is partly set is 600～1000 millimeters, is only approximately 1/3rd to 1/2nd of existing separation column distillation stage packed height.This just makes the height of separation column lower, and materials consumption is less, investment is lower; Full tower pressure drop is also lower, is conducive to reduce energy consumption.
The utility model when the vacuum fractionation tower, can reduce at the bottom of the vacuum fractionation tower tower of stipulating in oil refining industry the content of light constituent (as be less than 500 ℃ of cuts or be less than 538 ℃ of cuts) in vacuum residuum, improves extracting rate, realize the greatest benefit of oil product combination.When processing Processing High-sulfur High-Acidity Crude Oils, the Corrosion Protection of vacuum fractionation tower cylindrical shell and column internals material is required to very harshness, material price is expensive.Adopt scheme of the present utility model, can reduce the materials consumption of vacuum fractionation tower, significantly reduce investment, effectively reduce costs.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of separation column for oil product separation of the present utility model.
Fig. 2 is that another kind of the present utility model is for the structural representation of the separation column of oil product separation.
Fig. 3 is the vertical view of a kind of spray-type liquid distributor of the utility model use.
Fig. 4 is the structural representation of being located at a kind of one-way sprayer on spray-type liquid distributor.
Fig. 5 is the structural representation of being located at a kind of Bidirectional spray head on spray-type liquid distributor.
Fig. 6 is the enlarged detail of oil header in Fig. 1 and Fig. 2.
Fig. 7 is the partial enlarged drawing that washs the set groined type gridding grille of part filler shown in Fig. 1 and Fig. 2.
Fig. 8 is the sectional perspective structural representation (amplification) of groined type gridding grille filler.
In Fig. 1 to Fig. 8, same reference numerals represents identical technical characterictic.
Embodiment
Referring to Fig. 1, a kind of separation column for oil product separation of the present utility model (referred to as separation column), comprises cylindrical shell 10 and column internals, is divided into feeding part, washing part, fractionation part from bottom to top.Feeding part is provided with gas distributor 1, and gas distributor 1 uses conventional gas distributor, as biserial vane-type, tangential etc.Washing part is provided with a liquid distributor and one section of washing section filler that is positioned at liquid distributor below.Fractionation is partly provided with 3～4 distillation stages (shown in Fig. 1 is to be provided with 3 distillation stages), and each distillation stage is provided with liquid distributor, distillation stage filler 5 and oil header 6 from top to bottom.The top of separation column is provided with gas outlet tube 11, and bottom is provided with tower prime cement liquid and extracts pipe 4 out.The column internals of separation column, refers to gas distributor 1, liquid distributor, oil header 6, filler etc.
The utility model, the set liquid distributor of each distillation stage is the spray-type liquid distributor 3 that is provided with one-way sprayer 8, the height h of distillation stage filler 5 is 600～1000 millimeters.Distillation stage filler 5 is existing conventional structured packing (for example Mellapak structured packing).The set spray-type liquid distributor 3 of distillation stage is preferably used the liquid spray distributing device described in CN201454359U.Referring to Fig. 3 (the vertical view dextrorotation that Fig. 3 is equivalent to the set spray-type liquid distributor 3 of distillation stage shown in Fig. 1 and Fig. 2 turn 90 degrees and the view that obtains), it comprises charging supervisor 31, distribution arms 32 and fluid jetting head.Distribution arms 32 is connected with charging supervisor 31, and fluid jetting head is connected with charging supervisor 31 with distribution arms 32.Set fluid jetting head is one-way sprayer 8.Referring to Fig. 4, this one-way sprayer 8 is provided with shower nozzle plug 84, shower nozzle cavity 82, charging straight tube 81 and squit hole 83.Shower nozzle cavity 82 is linear, the cylindrical or back taper of double-paraboloid, and squit hole 83 is loudspeaker wide-angle shape.Described double-paraboloid line head cavity 82 (as shown in Figure 4), refer to that shower nozzle cavity 82 take the para-curve rotator shaped that the axial line of shower nozzle cavity 82 surrounded as turning axle rotation for para-curve, its sidewall is shaped as two para-curves on the vertical plane by shower nozzle cavity 82 axial lines.Described back taper shower nozzle cavity 82, refers to that shower nozzle cavity 82 is for inverted conical butt.For the shower nozzle cavity 82 of non-cylindrical, its diameter refers to the diameter at minimum place.Referring to Fig. 4, charging straight tube 81 is positioned at shower nozzle cavity 82 1 sides and is communicated with shower nozzle cavity 82, and its axis is vertical with the axis of shower nozzle cavity 82.Arrangement mode between one-way sprayer 8 is rounded projections arranged or diamond array.The spray area large (can reach 1.5～2 square metres) of described one-way sprayer 8, uniform effective; Other unidirectional fluid jetting head close with its performance also can be used.The explanation of aforesaid liquid spray distribution apparatus (comprising one-way sprayer 8) structure and operating process, refers to CN201454359U.The set spray-type liquid distributor 3 of each distillation stage can be according to the spray flow of liquid 33 and the cross-sectional area of separation column cylindrical shell 10, adjust quantity, the size of one-way sprayer 8, the liquid spraying out can be covered the horizontal section of the separation column cylindrical shell 10 of corresponding spray-type liquid distributor 3 present positions.
The set oil header 6 of distillation stage can be used existing oil header (for example drum type brake oil header), preferably uses the liquid-collecting box described in CN202642532U.Referring to Fig. 6, oil header 6 is mainly provided with top Bifurcation Set liquid bath 61, middle part Bifurcation Set liquid bath 62 and bottom and gathers intercepting basin 63.Bifurcation Set liquid bath is layered arrangement, and it is one deck that Bifurcation Set liquid bath 61 rows in top arrange for one deck, middle part Bifurcation Set liquid bath 62.Between Bifurcation Set liquid bath in every layer, leave gap, top Bifurcation Set liquid bath 61 and middle part Bifurcation Set liquid bath 62 interlayers leave gap.Top Bifurcation Set liquid bath 61 is connected by strut member with middle part Bifurcation Set liquid bath 62, and each Bifurcation Set liquid bath is connected with cylindrical shell 10 near one end of separation column cylindrical shell 10, and one end of middle part Bifurcation Set liquid bath 62 is gathered intercepting basin 63 with bottom and is connected.Bottom is gathered intercepting basin 63 and is connected with extraction pipe 7.Extract pipe 7 out and in separation column of the present utility model, be used as sideline product and extract pipe out, each oil header 6 can according to sideline product number one or more be set extract pipe 7 out.With respect to existing drum type brake oil header, the gas distribution that the liquid-collecting box described in CN202642532U can make to flow through obtains more even, thereby guarantees contact fully effectively between gas-liquid, strengthens gas-liquid mass transfer effect.
Existing separation column, washing part typically uses tank type liquid distributor, and first wash section filler (being generally corrugated plate packing) is set below tank type liquid distributor.That the levelness of tank type liquid distributor requires is high, the high and high material consumption of spatial altitude complicated, that take is installed.For overcoming this shortcoming, the utility model is used in washing part the spray-type liquid distributor 3 that is provided with one-way sprayer 8 or Bidirectional spray head 9.Separation column shown in Fig. 1, washs the set spray-type liquid distributor 3 (being provided with one-way sprayer 8) of the part spray-type liquid distributor 3 (comprise one-way sprayer 8) set with distillation stage identical.The another kind of separation column of the utility model shown in Fig. 2 with the difference of separation column shown in Fig. 1 is, on the set spray-type liquid distributor 3 of washing part, setting is the Bidirectional spray head 9 described in CN201702049U.Referring to Fig. 5, Bidirectional spray head 9 is provided with feed-pipe 93, housing 95, is provided with cylindrical cavity 92 in housing 95.Between feed-pipe 93 and cylindrical cavity 92, be provided with connecting passage 94, the two ends of cylindrical cavity 92 are provided with wide-angle flaring exit 91.The spray area large (can reach 4～6 square metres) of described Bidirectional spray head 9, uniform effective; Other two-way fluid jetting head close with its performance also can be used.The structure of above-mentioned Bidirectional spray head 9 and the explanation of operating process, refer to CN201702049U.Distribution arms and charging supervisor that Bidirectional spray head 9 can be connected in by the mode identical with one-way sprayer 8 described in CN201454359U are upper, form the spray-type liquid distributor 3 (changing the one-way sprayer in the utility model Fig. 38 into Bidirectional spray head 9) that is provided with Bidirectional spray head; Detail drawing omits.The set spray-type liquid distributor 3 of washing part can be according to the spray flow of liquid 33 and the cross-sectional area of separation column cylindrical shell 10, adjust quantity, the size of one-way sprayer 8 or Bidirectional spray head 9, make the liquid spraying out the horizontal section of the separation column cylindrical shell 10 of described spray-type liquid distributor 3 present positions can be covered to (when using Bidirectional spray head 9, forming upper and lower two-layer liquid covers).
The utility model spray-type liquid distributor 3 is used one-way sprayer or the Bidirectional spray head described in CN201454359U or CN201702049U, be because it is relatively simple for structure, it is low to be easy to the spatial altitude manufacturing, take, be conducive to reduce height and the full tower pressure drop of separation column.One-way sprayer 8 and Bidirectional spray head 9 are all difficult for being stopped up by solid particulate, can extension device work-ing life and turnaround.The liquid distribution spraying out due to each one-way sprayer 8 and Bidirectional spray head 9 is even, is fine droplet, so can increase gas-to-liquid contact chance, strengthen gas-liquid mass transfer effect or strengthen the cleaning performance to the contained solid particulate of oil gas.On the set spray-type liquid distributor 3 of washing part, use Bidirectional spray head 9, can be for reducing heavy metal and carbon residue content in sideline product, improve quality product more reliable and effective assurance is provided.
Separation column of the present utility model, the set washing section filler of washing part is the groined type gridding grille filler 2 described in CN202921125U.Groined type gridding grille filler 2 at least arranges 2 layers, normally arranges 2～3 layers; Shown in Fig. 1 and Fig. 2 is to arrange respectively 3 layers.Referring to Fig. 1, Fig. 2, Fig. 7 and Fig. 8, each layer of groined type gridding grille filler 2 be all with the ramp way tilting with horizontal plane, by tilting with horizontal plane and cross one another horizontally-arranged stripe board 21 and tandem stripe board 22 form; Single ramp way is shaped as parallelogram on horizontal plane.In individual layer groined type gridding grille filler 2, between horizontally-arranged stripe board 21, be parallel to each other, between tandem stripe board 22, be parallel to each other.The outward appearance of each layer of groined type gridding grille filler 2 is disc, and upper and lower surface is plane, and upper strata groined type gridding grille filler 2 is positioned on the upper surface of lower floor's groined type gridding grille filler 2.In neighbouring two-layer groined type gridding grille filler 2, ramp way is staggeredly arranged, and horizontally-arranged stripe board 21 and tandem stripe board 22 vergence direction is with respect to the horizontal plane contrary respectively; Can strengthen so the contained solid particulate of the oil gas that enters in groined type gridding grille filler 2 and the collision of horizontally-arranged stripe board 21 and tandem stripe board 22, extend oil gas and the duration of contact of spray liquid in groined type gridding grille filler 2, promote they contact, gather.Referring to Fig. 8, when the contained solid content of oil gas in entering groined type gridding grille filler 2 is higher, in horizontally-arranged stripe board 21 that can be in groined type gridding grille filler 2 and tandem stripe board 22, purge hole 30 (otherwise just need not arrange) is set.In operating process, while flowing in a plurality of ramp ways that stagger up and down of oil gas in multiple zone well glyph grid grid packing 2, part oil gas blows out (as shown in the arrow Fig. 8) from purge hole 30, along the upper surface of horizontally-arranged stripe board 21 and tandem stripe board 22, is tilted to current downflow.This contributes to spray liquid the solid particulate on horizontally-arranged stripe board 21 and tandem stripe board 22 upper surfaces and the accumulation of spray liquid drop is washed away, to keep the usefulness of groined type gridding grille filler 2.Purge hole 30 is set, also helps the pressure drop that reduces each layer of groined type gridding grille filler 2.
Referring to Fig. 1, Fig. 2, Fig. 7 and Fig. 8, the main structure parameters of the utility model groined type gridding grille used filler 2 is generally as follows: in individual layer groined type gridding grille filler 2, angle β between horizontally-arranged stripe board 21 and horizontal plane is 30～85 degree, angle α between tandem stripe board 22 and horizontal plane is 30～85 degree, and the angle γ between horizontally-arranged stripe board 21 and tandem stripe board 22 is 20～90 degree; Any in angle β, angle α and angle γ, is preferably 30 degree, 45 degree or 60 degree.Vertical range t (referring to Fig. 7) between vertical range between horizontally-arranged stripe board 21 (figure slightly) and tandem stripe board 22 is 20～200 millimeters.The voidage of individual layer groined type gridding grille filler 2 is 99.0%～99.5%, and height k is 100～300 millimeters (being preferably 200 millimeters), and diameter d is slightly less than the interior diameter D of separation column cylindrical shell 10 so that (referring to Fig. 1, Fig. 2) is installed.When groined type gridding grille filler 2 (and distillation stage filler 5) is installed in separation column, need to use strut member, press strip etc.; Describe in detail and accompanying drawing omission.
To groined type gridding grille filler 2 detailed description of (comprising purge hole 30), see CN202921125U.The utility model is used the groined type gridding grille filler described in CN202921125U at the set washing section filler of washing part, be because its simple in structure regular, be easy to manufacture, and voidage is higher, gas flux is large, pressure drop is less, be applicable to the occasion that contains solid particulate in high gas-liquid ratio, oil gas, be conducive to reduce the full tower pressure drop of separation column.This filler itself is not easy to be stopped up by solid particulate, can extension device work-ing life and turnaround.
The separation column shown in Fig. 1 of take is below the vacuum distillation method as this separation column of example explanation use as vacuum fractionation tower.The oil gas 102 that contains solid particulate [heavy metal (as Ni, V) and char particle etc.] enters gas distributor 1 by the entrance 101 of gas distributor 1, after gas distributor 1 is uniformly distributed, rises, and enters groined type gridding grille filler 2.Spray liquid 33 enters the set spray-type liquid distributor 3 of washing part from the entrance 30 of spray-type liquid distributor 3, through charging supervisor 31, distribution arms 32, by one-way sprayer 8 evenly ejection downwards, enters groined type gridding grille filler 2.In groined type gridding grille filler 2, spray liquid and the oil gas counter current contact that contains solid particulate.A part of solid particulate in oil gas gathers in horizontally-arranged stripe board 21 and tandem stripe board 22, and spray liquid washing away under under horizontally-arranged stripe board 21 and 22 landings of tandem stripe board.The oil gas that is removed afterwards a part of solid particulate goes out to continue to rise from the overhead stream of groined type gridding grille filler 2, and during liquid level that adverse current sprays out downwards by one-way sprayer 8, its solid particulate carrying is further washed down.In above-mentioned washing process, the spray liquid flowing downward and the oil gas that contains solid particulate of rising also carry out gas-liquid heat-transfer and mass transfer simultaneously.The cooling of heavy constituent that in rising oil gas, volatility is low, become liquid after cooling, at the bottom of carrying with isolate the spray liquid of the light constituent that volatility is high after mass transfer through gas-liquid heat-transfer together with that the solid particulate that is cleaned is descending and droping to tower, (tower prime cement liquid 40 is vacuum residuum to become tower prime cement liquid 40; Tower prime cement liquid 40 is finally extracted pipe 4 out by tower prime cement liquid and is discharged); In spray liquid, the high light constituent of volatility becomes vapor phase stream after being heated, and rises with isolate the rising oil gas of the heavy constituent that volatility is low after mass transfer through gas-liquid heat-transfer together with.Above-mentioned washing process, can prevent from that oil gas from carrying on most of solid particulate to escape, thereby reduces heavy metal and the carbon residue content of sideline product, promotes the quality of sideline product, for downstream unit provides the more raw material of high-quality.
The oil gas of process washing (contain washing part and spray the high light constituent of volatility in liquid) continues up, passes through each distillation stage of fractionation part from bottom to top.In each distillation stage, first oil gas be upwards uniformly distributed by the gap (as shown in the curve arrow in Fig. 6) between oil header 6 each Bifurcation Set liquid baths, then enter distillation stage filler 5.Spray liquid 33 enters each set spray-type liquid distributor 3 of each distillation stage from the entrance 30 of spray-type liquid distributor 3, through charging supervisor 31, distribution arms 32, by one-way sprayer 8 evenly ejection downwards, enters distillation stage filler 5.In distillation stage filler 5, spray liquid and oil gas counter current contact are carried out gas-liquid heat-transfer and mass transfer.Afterwards, oil gas goes out to continue to rise from the overhead stream of distillation stage filler 5, and the liquid level that adverse current sprays out downwards by one-way sprayer 8 continues to carry out gas-liquid heat-transfer and mass transfer with spray liquid.In the gas-liquid heat-transfer and mass transfer process carrying out in above-mentioned distillation stage, the cooling of heavy constituent that in rising oil gas, volatility is low, become liquid after cooling, intercepting basin 63 is gathered in seamless unoccupied place falls into oil header 6 with isolate the spray liquid of the light constituent that volatility is high after mass transfer through gas-liquid heat-transfer together with top Bifurcation Set liquid bath 61, middle part Bifurcation Set liquid bath 62 and bottom; Then the liquid in top Bifurcation Set liquid bath 61, middle part Bifurcation Set liquid bath 62 constantly confluxes, finally conflux accumulate to bottom gather in intercepting basin 63.Aforesaid liquid product is extracted pipe (the extraction pipe 7 of oil header 6 each distillation stage) as sideline product out from the sideline product of separation column and is extracted out.In above-mentioned gas-liquid heat-transfer and mass transfer process, in spray liquid, the high light constituent of volatility becomes vapor phase stream after being heated, rise with isolate the rising oil gas of the heavy constituent that volatility is low after mass transfer through gas-liquid heat-transfer together with, finally as gas products, from the gas outlet tube 11 at separation column top, extract out.
Separation column of the present utility model, when fractionation is partly provided with 3～4 distillation stages, is extracted the sideline product of 3～4 kinds of different boiling ranges out the most at last.Separation column shown in Fig. 1 and Fig. 2, fractionation is partly equipped with 3 distillation stages, all extracts the sideline product of 3 kinds of different boiling ranges out.The sideline product of wherein extracting out from a uppermost distillation stage is decompression one line.Entering the spray liquid 33 in set each spray-type liquid distributor 3 of each distillation stage, is a part (refluxing as the stage casing of returning to separation column) of extracting out the sideline product from each corresponding distillation stage; Entering the spray liquid 33 in the set spray-type liquid distributor 3 of washing part, is a part (as the washing oil that returns to separation column) of extracting out in addition the sideline product from a bottom distillation stage.
In the gas-liquid heat-transfer and mass transfer process carrying out in above-mentioned each distillation stage, the liquid countercurrent that one-way sprayer 8 on the oil gas that the rises spray-type liquid distributor 3 set with distillation stage sprays out downwards contacts when carrying out gas-liquid heat-transfer and mass transfer, a small amount of solid particulate that described oil gas carries can be cleaned again by described spray liquid, and the solid content that oil gas carries is constantly reduced.
The another kind of separation column of the utility model shown in Fig. 2 as the operating process of vacuum fractionation tower with the difference of separation column operating process shown in above-mentioned Fig. 1 is, 9 whiles of Bidirectional spray head on the set spray-type liquid distributor 3 of washing part spray out two-layer liquid with below upward; The oil gas that is removed a part of solid particulate in groined type gridding grille filler 2, from upwards flow out at the top of groined type gridding grille filler 2, is washed and is carried out gas-liquid heat-transfer and mass transfer, better effects if by this two-layer liquid.
When separation column of the present utility model adopts preferred implementation (the set spray-type liquid distributor 3 of distillation stage is used the set spray-type liquid distributor 3 of one-way sprayer, washing part described in CN201454359U to use one-way sprayer described in CN201454359U or the Bidirectional spray head described in CN201702049U, the set oil header 6 of distillation stage to use the liquid-collecting box described in CN202642532U), under equal conditions compare with the separation column of existing use filler, the height of tower generally can reduce more than 30%, and full tower pressure drop generally can reduce more than 5%.Except described full tower pressure drop, other main operational condition and the conventional separation column of existing use filler of the utility model separation column is basic identical, and explanation is omitted.
Claims (3)
1. the separation column for oil product separation, comprise cylindrical shell (10) and column internals, be divided into feeding part from bottom to top, washing part, fractionation part, feeding part is provided with gas distributor (1), washing part is provided with liquid distributor and is positioned at the washing section filler of liquid distributor below, fractionation is partly provided with 3～4 distillation stages, each distillation stage is provided with liquid distributor from top to bottom, distillation stage filler (5) and oil header (6), it is characterized in that: the set liquid distributor of each distillation stage is the spray-type liquid distributor (3) that is provided with one-way sprayer (8), the height of distillation stage filler (5) is 600～1000 millimeters, the set liquid distributor of washing part is the spray-type liquid distributor (3) that is provided with one-way sprayer (8) or Bidirectional spray head (9), washing section filler is groined type gridding grille filler (2), groined type gridding grille filler (2) at least arranges 2 layers, each layer of groined type gridding grille filler (2) is all with the ramp way tilting with horizontal plane, by tilting with horizontal plane and cross one another horizontally-arranged stripe board (21) and tandem stripe board (22) formation, in neighbouring two-layer groined type gridding grille filler (2), ramp way is staggeredly arranged, horizontally-arranged stripe board (21) and tandem stripe board (22) vergence direction is with respect to the horizontal plane contrary respectively.
2. the separation column for oil product separation according to claim 1, it is characterized in that: described one-way sprayer (8) is provided with shower nozzle plug (84), shower nozzle cavity (82), charging straight tube (81) and squit hole (83), squit hole (83) is loudspeaker wide-angle shape, charging straight tube (81) is positioned at shower nozzle cavity (82) one sides and is communicated with shower nozzle cavity (82), its axis is vertical with the axis of shower nozzle cavity (82), described Bidirectional spray head (9) is provided with feed-pipe (93), housing (95), in housing (95), be provided with cylindrical cavity (92), between feed-pipe (93) and cylindrical cavity (92), be provided with connecting passage (94), the two ends of cylindrical cavity (92) are provided with wide-angle flaring exit (91).
3. the separation column for oil product separation according to claim 1 and 2, it is characterized in that: described oil header (6) is provided with top Bifurcation Set liquid bath (61), intercepting basin (63) is gathered in middle part Bifurcation Set liquid bath (62) and bottom, Bifurcation Set liquid bath is layered arrangement, top Bifurcation Set liquid bath (61) row is one deck, middle part Bifurcation Set liquid bath (62) row is one deck, between Bifurcation Set liquid bath in every layer, leave gap, top Bifurcation Set liquid bath (61) and middle part Bifurcation Set liquid bath (62) interlayer leave gap, top Bifurcation Set liquid bath (61) is connected by strut member with middle part Bifurcation Set liquid bath (62), one end of middle part Bifurcation Set liquid bath (62) is gathered intercepting basin (63) with bottom and is connected, bottom is gathered intercepting basin (63) and is connected with extraction pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732406.XU CN203569038U (en) | 2013-11-12 | 2013-11-12 | Fractionating tower for separation of oil products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732406.XU CN203569038U (en) | 2013-11-12 | 2013-11-12 | Fractionating tower for separation of oil products |
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| Publication Number | Publication Date |
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| CN203569038U true CN203569038U (en) | 2014-04-30 |
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| CN201320732406.XU Expired - Lifetime CN203569038U (en) | 2013-11-12 | 2013-11-12 | Fractionating tower for separation of oil products |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251152A (en) * | 2018-03-20 | 2018-07-06 | 刘彦昌 | A kind of vacuum tower of waste lubricating oil pretreatment |
| CN111545159A (en) * | 2020-05-29 | 2020-08-18 | 北京化工大学 | High-efficient mass transfer separation bulk packing structure |
| CN117942917A (en) * | 2024-03-27 | 2024-04-30 | 天大津康(天津)科技股份有限公司 | Packing structure of packing tower |
-
2013
- 2013-11-12 CN CN201320732406.XU patent/CN203569038U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251152A (en) * | 2018-03-20 | 2018-07-06 | 刘彦昌 | A kind of vacuum tower of waste lubricating oil pretreatment |
| CN111545159A (en) * | 2020-05-29 | 2020-08-18 | 北京化工大学 | High-efficient mass transfer separation bulk packing structure |
| CN111545159B (en) * | 2020-05-29 | 2021-05-04 | 北京化工大学 | High-efficient mass transfer separation bulk packing structure |
| CN117942917A (en) * | 2024-03-27 | 2024-04-30 | 天大津康(天津)科技股份有限公司 | Packing structure of packing tower |
| CN117942917B (en) * | 2024-03-27 | 2024-05-24 | 天大津康(天津)科技股份有限公司 | Packing structure of packing tower |
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