CN211836391U - Tower inner member for fractionating tower - Google Patents
Tower inner member for fractionating tower Download PDFInfo
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- CN211836391U CN211836391U CN202020058564.1U CN202020058564U CN211836391U CN 211836391 U CN211836391 U CN 211836391U CN 202020058564 U CN202020058564 U CN 202020058564U CN 211836391 U CN211836391 U CN 211836391U
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Abstract
The utility model discloses a tower inner member for fractionating tower belongs to the oil equipment field. The tower internals include: the fluid distribution pipes, the fluid distribution grooves and the baffle plate mechanisms are sequentially distributed at intervals from top to bottom; the baffle mechanism comprises at least three layers which are arranged at intervals from top to bottom, the adjacent upper and lower layers of baffles are arranged in a staggered manner, each layer of baffle comprises a plurality of baffles which are arranged at intervals, and the distance between the adjacent baffles in the same layer of baffle is smaller than the width of the baffle; the fluid distribution pipe is used for distributing fluid into the fluid distribution groove; a fluid dispensing trough for dispensing fluid to a topmost baffle of a baffle mechanism, comprising: the fluid distribution grooves are arranged at intervals, and a balance groove is arranged between every two adjacent fluid distribution grooves and used for enabling the liquid levels of the fluid distribution grooves to be consistent. The component in the tower can obviously increase the gas-liquid contact area, is beneficial to enhancing the heat and mass transfer effect, prevents oil gas coking and blockage, reduces the gas resistance and obviously improves the washing effect of catalyst powder.
Description
Technical Field
The utility model relates to a petroleum equipment field, in particular to a tower inner member for fractionating tower.
Background
For fractionators, particularly catalytic cracking fractionators, the feed is superheated hydrocarbon at temperatures in excess of 500 ℃, with entrained catalyst dust. In order to avoid the coking of the overheated oil gas, an oil slurry heat exchange section is generally arranged below the inner part of the fractionating tower.
At present, a herringbone baffle is usually arranged in an oil slurry heat exchange section, circulating oil slurry pumped out from the bottom of a tower returns to the tower after heat exchange and cooling, and is in countercurrent contact with rising oil gas through the herringbone baffle, so that on one hand, the oil gas is rapidly cooled to avoid coking; on the other hand, the catalyst dust entrained by the oil gas is washed.
In the process of implementing the present invention, the present inventors found that there are at least the following problems in the prior art:
when the temperature of the oil slurry heat exchange section is obviously increased, the herringbone baffle plate has a limited oil gas cooling effect, the oil gas temperature is high, the catalyst dust washing effect is poor, and coking is easy to block a tower tray.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an inner tower member for a fractionating tower, which can solve the above technical problems.
Specifically, the method comprises the following technical scheme:
an internals for a fractionation column disposed within the fractionation column, the internals comprising: the fluid distribution pipes, the fluid distribution grooves and the baffle plate mechanisms are sequentially distributed at intervals from top to bottom;
the baffle mechanism includes: at least three layers of baffles are arranged at intervals from top to bottom, the adjacent upper and lower layers of baffles are arranged in a staggered manner, each layer of baffle comprises a plurality of baffles arranged at intervals, and the distance between the adjacent baffles in the same layer of baffle is smaller than the width of the baffle;
the fluid distribution pipe is used for distributing fluid into the fluid distribution groove;
the fluid distribution trough is used for distributing the fluid to the topmost baffle of the baffle mechanism and comprises: the fluid distribution grooves are arranged at intervals, and a balance groove is arranged between every two adjacent fluid distribution grooves and used for enabling the liquid levels of the fluid distribution grooves to be consistent.
In one possible implementation, each of the baffles includes: the overflow weir comprises a plate body with a plurality of through holes and overflow weirs arranged on two sides of the plate body;
the aperture of the via hole is 20mm-50 mm.
In one possible implementation, the height of the weir is less than 60 mm.
In one possible implementation, the shutter mechanism includes: 3-10 layers of baffle plates are arranged at intervals from top to bottom.
In one possible implementation, each layer of baffles comprises 4-7 baffles, and 4-7 of the baffles are parallel and opposite to each other.
In a possible realization mode, the distance between the adjacent upper baffle and the lower baffle in the vertical direction is 100mm-2000 mm.
In one possible implementation, the fluid distribution tank includes: 4-7 parallel opposite to each other, and 4-7 fluid distribution grooves are arranged with the topmost baffle plate in a staggered way, so that the fluid overflows to the topmost baffle plate from the side part.
In one possible implementation, the trough bottom of the fluid distribution trough is provided with a tear hole.
In one possible implementation, the fluid distribution tube includes: the distribution main pipe and the distribution branch pipes are communicated with the distribution main pipe, and the distribution branch pipes correspond to the fluid distribution grooves one by one;
the bottom of the distribution branch pipe is provided with a plurality of liquid distribution holes.
In one possible implementation mode, the aperture of the liquid distribution hole is 20mm-50 mm.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
the embodiment of the utility model provides a tower internals for fractionating tower can set up in the slurry oil heat transfer section of fractionating tower during the application, and the fluid, for example circulation slurry oil distributes the fluid by fluid distribution pipe to fluid distribution inslot, and the fluid keeps the liquid level unanimous in fluid distribution inslot to can be distributed to topmost layer baffle uniformly. The baffle is used as a gas-liquid contact part, through holes are arranged on the baffle, rising gas, such as overheated oil gas, goes upwards from the through holes on the baffle and a gap between two adjacent baffles on the same layer, oil slurry goes downwards from top to bottom sequentially from a baffle mechanism, because the adjacent upper baffle and the adjacent lower baffle are arranged in a staggered manner, and the distance between the adjacent baffles in the same layer is smaller than the width of the baffle, the oil slurry can be ensured to completely flow into the lower baffle from the upper baffle, and meanwhile, the stroke of the oil slurry is prolonged, so that the gas-liquid contact area is remarkably increased, the heat and mass transfer effect is favorably strengthened, the oil gas coking blockage is prevented, the gas resistance drop is reduced, and the. In addition, the balance groove is arranged between the two adjacent fluid distribution grooves, so that the liquid levels of the fluid distribution grooves are consistent, the oil slurry received by the baffles at the topmost layer is ensured to be uniform, and the oil-gas cooling effect and the catalyst washing effect are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a column internal component for a fractionating column according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first layer of baffles of the tower internals of FIG. 1;
FIG. 3 is a schematic diagram of a second layer of baffles of the tower internals of FIG. 1;
FIG. 4 is a schematic diagram of the fluid distribution channels of the column internals of FIG. 1;
fig. 5 is a schematic diagram of the fluid distribution conduit of the tower internals of fig. 1.
The reference numerals denote:
1-fluid distribution pipe, 101-distribution main pipe, 102-distribution branch pipe, 103-liquid distribution hole,
2-a fluid distribution groove, wherein the fluid distribution groove is arranged on the upper surface of the fluid distribution groove,
3-baffle mechanism, 301-baffle, 302-via,
4-balance groove.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a tower internals for fractionating tower, this tower internals setting are in the fractionating tower, as shown in figure 1, this tower internals includes: the fluid distribution pipe 1, the fluid distribution groove 2 and the baffle mechanism 3 are distributed at intervals from top to bottom in sequence.
The baffle mechanism 3 comprises at least three layers of baffles arranged at intervals from top to bottom, the upper and lower adjacent layers of baffles are arranged in a staggered mode, each layer of baffle comprises a plurality of baffles 301 arranged at intervals, and the distance between the adjacent baffles 301 in the same layer of baffle is smaller than the width of the baffles 301.
The fluid distribution pipe 1 is used for distributing fluid into the fluid distribution groove 2; the fluid distribution tank 2 is used for distributing fluid to the topmost baffle 301 of the baffle mechanism 3, and comprises: a plurality of balancing grooves 4 are arranged at intervals, and a balancing groove 4 is arranged between two adjacent fluid distribution grooves 2 and is used for enabling the liquid levels of the fluid distribution grooves 2 to be consistent.
It will be appreciated that the baffle mechanism 3 includes baffles 301 which are uniform in configuration, such as width, except for the length (which cannot be uniform due to the radial length of the baffles when distributed within the fractionation column).
The embodiment of the utility model provides a fractionating tower includes but not limited to: a catalytic cracking fractionating tower.
The embodiment of the utility model provides a tower internals for fractionating tower can set up in the slurry oil heat transfer section of fractionating tower during the application, and the fluid, for example circulation slurry oil is by fluid distribution pipe 1 distribution fluid in to fluid distribution groove 2, and the fluid keeps the liquid level unanimous in fluid distribution groove 2 to can be distributed to topmost layer baffle 301 uniformly. The baffle 301 is used as a gas-liquid contact part, the via hole 302 is arranged on the baffle 301, rising gas, such as overheated oil gas goes upwards from the via hole 302 on the baffle 301 and a gap between two adjacent baffles 301 on the same layer, oil slurry goes downwards from top to bottom sequentially from the baffle mechanism 3, because the adjacent upper and lower layers of baffles are arranged in a staggered manner, and the distance between the adjacent baffles 301 in the same layer of baffles is smaller than the width of the baffle 301, the oil slurry can be ensured to completely flow into the lower layer of baffles 301 from the upper layer of baffles 301, and meanwhile, the stroke of the oil slurry is prolonged, so that the gas-liquid contact area is obviously increased, the heat and mass transfer effect is favorably enhanced, the oil gas coking blockage is prevented, the gas resistance. In addition, the balance groove 4 is arranged between the two adjacent fluid distribution grooves 2, so that the liquid levels of the fluid distribution grooves 2 are consistent, the oil slurry amount received by the baffle plates 301 at the topmost layer is ensured to be uniform, and the oil-gas cooling effect and the catalyst washing effect are improved.
In the embodiment of the present invention, the baffle mechanism 3 comprises at least three layers of baffles arranged at intervals from top to bottom, for example, 3-10 layers of baffles, for example, 3 layers, 4 layers, 5 layers, 6 layers, 7 layers, 8 layers, 9 layers, 10 layers, etc. may be further provided.
For example, when the number of the first layer of baffles is odd, the number of the second layer of baffles is even, and so on. On the contrary, when the number of the first layer of baffles is even, the number of the second layer of baffles is odd.
Wherein, for the adjacent upper and lower layers of baffle plates, the distance between the two baffle plates in the vertical direction is 100mm-2000mm, such as 500mm-800mm, further for example, 550mm, 600mm, 650mm, 700mm, 750mm, 850mm, 1000mm, 1500mm, etc., and the above distance can ensure enough effective gas-liquid contact time.
The vertical spacing between two adjacent baffle plates 301 may be the same or different, for example, the vertical spacing between all two adjacent baffle plates 301 in the multi-layer baffle plate 301 may be the same, or they may be partially or completely different. The baffles 301 in the two adjacent layers are staggered, that is, the baffles 301 in one layer correspond to the space between the baffles 301 in the other layer. Since the spacing between adjacent baffles 301 in the same layer of baffles 301 is less than the width of the baffles 301 (e.g., the spacing between adjacent baffles 301 is equal to (0.5-0.9) the width of the baffles 301), it is ensured that descending liquid falls from the upper layer of baffles 301 onto the lower layer of baffles 301.
Each layer of baffles 301 comprises 4-7, and 4-7 baffles 301 are parallel opposite to each other to ensure heat and mass transfer effects. For each baffle 301, the width is 100mm to 2000mm, such as 100mm, 300mm, 500mm, 800mm, 1000mm, 1200mm, 1500mm, 1800mm, and the like. Of course, the number of baffles 301 and the width of the baffles 301 in each layer can be adjusted adaptively according to the diameter of the fractionating tower.
In the embodiment of the present invention, as shown in fig. 2 and fig. 3, each baffle 301 includes: the plate body with a plurality of through holes 302 and the overflow weirs arranged on two sides of the plate body can enable a part of fluid, such as slurry oil, to overflow onto the lower baffle 301 through the overflow weirs, so that the heat and mass transfer effects are further improved.
Wherein the height of the weir may be less than 60mm, for example, between 1mm and 60 mm.
The through holes 302 on the baffle 301 can adopt the forms of circle, ellipse, regular polygon and the like, the aperture of the through holes 302 is 20mm-50mm, a plurality of open pores can be uniformly arranged, and the aperture ratio is ensured to be between 1% -50%, so as to obtain better heat and mass transfer effects.
In the embodiment of the present invention, as shown in fig. 4, the fluid distribution groove 2 includes 4-7 parallel-opposed baffles and is staggered with the topmost baffle 301 for overflowing the fluid from the side portion to the topmost baffle 301. The width of the fluid distribution channel 2 may be the same as the width of the baffle 301, the height of the side of the channel may be 50mm-300mm, and the spacing between adjacent fluid distribution channels 2 may be the same as the spacing between adjacent baffles 301 on any level, i.e. the side of the fluid distribution channel 2 is opposite the topmost baffle 301 to ensure that the fluid can flow completely into the topmost baffle 301.
Further, a tear hole is provided at the bottom of the fluid distribution tank 2 so that the liquid can be drained by the tear hole after the fractionation tower is stopped.
Wherein, the number of the tear holes can be 1-10, the tear holes are evenly distributed, the tear holes can be circular holes, and the aperture can be 10 mm.
The embodiment of the utility model provides an in, set up at least one compensating tank 4 between two adjacent fluid distribution groove 2, the width of compensating tank 4 can be 300mm-800mm, and the lateral part height of compensating tank 4 can be 100mm-400mm to, the lateral part height of compensating tank 4 should be greater than the lateral part height of fluid distribution groove 2, in order to ensure the effect of its balanced fluid liquid level, a plurality of compensating tank 4 symmetrical arrangement.
In the embodiment of the present invention, as shown in fig. 5, the fluid distribution pipe 1 includes: the distribution main pipe 101, a plurality of distribution branch pipes 102 communicated with the distribution main pipe 101, and the distribution branch pipes 102 are in one-to-one correspondence with the fluid distribution grooves 2, the bottom of the distribution branch pipe 102 is provided with a plurality of liquid distribution holes 103, and the fluid is evenly distributed to each fluid distribution groove 2 by the distribution branch pipes 102.
Wherein the number of distribution branch pipes 102 may be equal to the number of fluid distribution troughs 2, and the total cross-sectional area of the distribution branch pipes 102 may be equal to or close to the cross-sectional area of the distribution main pipe 101.
The liquid distribution holes 103 are arranged at the bottom of the distribution branch pipe 102, for example, the liquid distribution holes 103 may be evenly arranged in plurality along the axial direction of the distribution branch pipe 102, the center line of the plurality of liquid distribution holes 103 may be opposite to the center line of the fluid distribution groove 2, so as to accurately distribute the fluid into the fluid distribution groove 2, the hole diameter of the liquid distribution holes 103 may be 20mm to 50mm, and the total opening area of the liquid distribution holes 103 is 50% to 150% of the cross-sectional area of the distribution main pipe 101.
With reference to fig. 1-5, the embodiment of the present invention provides a tower inner member, which is directed to a catalytic cracking fractionating tower with a tower diameter of 5000mm, the tower inner member includes 7 layers of baffles 301, two layers of adjacent baffles 301 are arranged in a staggered manner, each layer of baffles 301 includes a plurality of baffles arranged at intervals, and the distance between adjacent baffles 301 in the same layer of baffles 301 is smaller than the width of the baffles 301. The width of each baffle 301 is 600mm, and the distance between adjacent baffles 301 in the same layer of baffles 301 is 500 mm. The plate body of the baffle 301 is provided with circular through holes 302, and the opening rate is 20%. The side edge of the plate body is provided with an overflow weir, and the height of the overflow weir is 40 mm. The number of the first-layer baffles 301 is 5, and the arrangement is shown in fig. 2, and the number of the second-layer baffles 301 is 4, and the arrangement is shown in fig. 3. The vertical distance between the upper baffle plate 301 and the lower baffle plate 301 is 600 mm. The width of the fluid distribution groove 2 is the same as that of the baffle 301 and is 600mm, and the height of the side part of the fluid distribution groove 2 is 150 mm; the distance between the adjacent fluid distribution grooves 2 is the same as the distance between the adjacent baffles 301, and is 500 mm; the number of the fluid distribution grooves 2 is 4 groups, the balance grooves 4 are connected between the adjacent fluid distribution grooves 2, the width of the balance groove 4 is 400mm, the height of the side part of the balance groove 4 is 200mm, and the distribution number of the balance grooves 4 and the fluid distribution grooves 2 is shown in fig. 4. As shown in fig. 5, the fluid distribution pipe 1 includes a main distribution pipe 101 and 4 branch distribution pipes 102, and the number of the branch distribution pipes 102 is the same as that of the fluid distribution grooves 2, and is 4 groups.
The embodiment of the utility model provides an in-tower component, wherein fluid distribution groove 2 and baffle mechanism 3 all including be used for with fractionating tower internal connection's collar, wherein, a plurality of fluid distribution groove 2 fixed mounting in the collar that corresponds, a plurality of baffles 301 also fixed mounting in the collar that corresponds, follow-up collar fixed mounting that passes through in the fractionating tower, for example can in the slurry oil heat transfer section of catalytic cracking fractionating tower.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An internals for a fractionation column, disposed within said fractionation column, said internals comprising: the fluid distribution pipes, the fluid distribution grooves and the baffle plate mechanisms are sequentially distributed at intervals from top to bottom;
the baffle mechanism includes: at least three layers of baffles are arranged at intervals from top to bottom, the adjacent upper and lower layers of baffles are arranged in a staggered manner, each layer of baffle comprises a plurality of baffles arranged at intervals, and the distance between the adjacent baffles in the same layer of baffle is smaller than the width of the baffle;
the fluid distribution pipe is used for distributing fluid into the fluid distribution groove;
the fluid distribution trough is used for distributing the fluid to the topmost baffle of the baffle mechanism and comprises: the fluid distribution grooves are arranged at intervals, and a balance groove is arranged between every two adjacent fluid distribution grooves and used for enabling the liquid levels of the fluid distribution grooves to be consistent.
2. The internals according to claim 1, wherein each of said baffles comprises: the overflow weir comprises a plate body with a plurality of through holes and overflow weirs arranged on two sides of the plate body;
the aperture of the via hole is 20mm-50 mm.
3. The internals according to claim 2, wherein the height of the weir is less than 60 mm.
4. The internals according to claim 1, wherein the baffle mechanism comprises: 3-10 layers of baffle plates are arranged at intervals from top to bottom.
5. The tower internals according to claim 1, wherein each layer of baffles comprises 4-7 baffles, and wherein 4-7 of said baffles are parallel and opposite to each other.
6. The tower internals according to claim 1, wherein the vertical spacing between adjacent upper and lower baffles is between 100mm and 2000 mm.
7. The internals according to claim 1, wherein the fluid distribution tank comprises: 4-7 parallel opposite to each other, and 4-7 fluid distribution grooves are arranged with the topmost baffle plate in a staggered way, so that the fluid overflows to the topmost baffle plate from the side part.
8. The internals according to claim 7, wherein the fluid distribution groove is provided with a tear hole at its groove bottom.
9. The internals according to claim 1, wherein the fluid distribution tube comprises: the distribution main pipe and the distribution branch pipes are communicated with the distribution main pipe, and the distribution branch pipes correspond to the fluid distribution grooves one by one;
the bottom of the distribution branch pipe is provided with a plurality of liquid distribution holes.
10. The internals according to claim 9, wherein the liquid distribution holes have a diameter of 20mm to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020058564.1U CN211836391U (en) | 2020-01-10 | 2020-01-10 | Tower inner member for fractionating tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020058564.1U CN211836391U (en) | 2020-01-10 | 2020-01-10 | Tower inner member for fractionating tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211836391U true CN211836391U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020058564.1U Active CN211836391U (en) | 2020-01-10 | 2020-01-10 | Tower inner member for fractionating tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211836391U (en) |
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2020
- 2020-01-10 CN CN202020058564.1U patent/CN211836391U/en active Active
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