CN215609430U - EO refining tower - Google Patents
EO refining tower Download PDFInfo
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- CN215609430U CN215609430U CN202122052814.8U CN202122052814U CN215609430U CN 215609430 U CN215609430 U CN 215609430U CN 202122052814 U CN202122052814 U CN 202122052814U CN 215609430 U CN215609430 U CN 215609430U
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- reboiler
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Abstract
The utility model discloses an EO refining tower, and relates to the technical field of chemical equipment. A feeding port of a bottom reboiler and a liquid outlet are arranged on a lower end socket of the tower body, the bottom reboiler is arranged on the outer side below the tower body, and the top of the bottom reboiler is communicated with a return port of the bottom reboiler; the upper end enclosure of the tower body is provided with a gas outlet; the side surface of the tower body is provided with a liquid feeding port, a side reboiler return port, an aldehyde-containing liquid outlet, an EO product outlet and a return port, the outside of the tower body is provided with a side reboiler, and the top of the side reboiler is communicated with the side reboiler return port; the tower body is internally provided with filler; three liquid collectors with multiple gas-lift pipes are arranged in the tower body. The utility model has the advantages that: the heavy component, the light component, the aldehydes and the EO product are completely separated in a refining tower, and a plurality of processes are combined into one process, so that the production efficiency is improved, the energy is saved, and the equipment investment is reduced; a side reboiler structure is adopted to increase the primary heat input, so that enough heat is ensured.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to an EO refining tower.
Background
EO, also known as ethylene oxide, is an intermediate chemical feedstock with a wide range of applications. The most common method for preparing EO is to oxidize ethylene with air to obtain EO and some byproducts, and then obtain 80-85% crude EO after separation, wherein the crude EO contains some light components, some heavy components and some aldehydes. These impurities must be removed to obtain high purity EO.
In the prior art, EO refining can be finished through a plurality of procedures such as lightness removal, weight removal and the like, and has the disadvantages of complex operation, low production efficiency and high equipment investment. It is necessary to provide an EO refining tower to achieve the purposes of reducing the processes, improving the production efficiency and reducing the equipment investment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an EO refining tower, which can solve the problems that in the prior art, refining EO can be finished only through multiple processes of lightness and weight removal, the operation is complicated, the production efficiency is low, and the equipment investment is high.
In order to solve the technical problems, the technical scheme of the utility model is as follows: including the tower body, the top and the bottom of tower body are equipped with upper cover and low head respectively, and the bottom of tower body is passed through the skirt and is supported, the inspection hole has been seted up to skirt side below, and several manhole, its characterized in that have been seted up in the outside of tower body: a feeding port of a bottom reboiler and a liquid outlet are formed in a lower end socket at the bottom of the tower body, a bottom reboiler is installed on the outer side below the tower body, the bottom of the bottom reboiler is communicated with the feeding port of the bottom reboiler, a bottom reboiler return port is formed in the side surface below the tower body, and the top of the bottom reboiler is communicated with the bottom reboiler return port;
a gas outlet is formed in the upper end enclosure at the top of the tower body;
the side surface of the tower body is respectively provided with a liquid feed inlet, a side reboiler return opening, an aldehyde-containing liquid outlet, an EO product outlet and a return opening from bottom to top, the liquid feed inlet is arranged above the bottom reboiler return opening, a side reboiler is arranged on the outer side of the tower body, the bottom of the side reboiler is communicated with the side reboiler feed inlet, and the top of the side reboiler is communicated with the side reboiler return opening;
the tower body is internally provided with five sections of fillers, the five sections of fillers are respectively a first filler, a second filler, a third filler, a fourth filler and a fifth filler from bottom to top, the first filler is arranged between a return port of a reboiler at the bottom and a liquid feed port, the second filler is arranged between the liquid feed port and a feed port of the side reboiler, the third filler is arranged between the return port of the side reboiler and an aldehyde-containing liquid outlet, the fourth filler is arranged between the aldehyde-containing liquid outlet and an EO product outlet, and the fifth filler is arranged between the EO product outlet and the return port;
the tower body is internally provided with three multi-riser liquid collectors, the three multi-riser liquid collectors are respectively arranged at a feed inlet of the side reboiler, an aldehyde-containing liquid outlet and an EO product outlet, and the three multi-riser liquid collectors are respectively arranged between the second filler and the third filler, between the third filler and the fourth filler, and between the fourth filler and the fifth filler.
Further, the liquid feed inlet is communicated with a feeding liquid distributor, the feeding liquid distributor is horizontally arranged in the tower body, and a plurality of liquid outlet holes are uniformly distributed in the bottom of the feeding liquid distributor.
Furthermore, the backflow port is communicated with a backflow liquid distributor, the backflow liquid distributor is horizontally arranged in the tower body, and a plurality of liquid outlet holes are uniformly distributed at the outlet of the backflow liquid distributor.
Furthermore, the multi-riser liquid collector comprises a plurality of drainage cones, support ribs, riser tubes and a ladder liquid collecting plate, wherein the riser tubes are arranged on the ladder liquid collecting plate in a row, through holes are formed in the ladder liquid collecting plate and communicated with the riser tubes, the support ribs are welded on the inner wall of the top of the riser tubes, the drainage cones are supported at the upper ends of the support ribs, and gaps are reserved between the bottoms of the drainage cones and the tops of the riser tubes;
the ladder liquid collecting plate is in a ladder shape, the ladder liquid collecting plate is arranged on the inner wall of the tower body, one side, high in the ladder liquid collecting plate, supports the plurality of gas risers, one side, low in the three ladder liquid collecting plates, of the ladder liquid collecting plate is communicated with a feeding port of the side reboiler, an aldehyde-containing liquid outlet and an EO product outlet respectively, and one side, low in the three ladder liquid collecting plates, of the ladder liquid collecting plate is arranged below the feeding port of the side reboiler, the aldehyde-containing liquid outlet and the EO product outlet respectively.
After adopting the structure, the utility model has the advantages that: the heavy component, the light component, the aldehydes and the EO product are completely separated in a refining tower, and a plurality of processes are combined into one process, so that the production efficiency is improved, the energy is saved, and the equipment investment is reduced;
because a plurality of processes are combined into one process, the tower body is very high, so that the temperature is reduced more when the tower body reaches a certain height, a side-line reboiler structure is arranged in the middle of the tower body, and the side-line reboiler structure is adopted to increase the primary heat input so as to ensure enough heat;
the tower body is internally provided with three liquid collectors with multiple gas risers, gas can upwards enter the space above the liquid collectors with the multiple gas risers from the gas risers, meanwhile, the drainage cone can completely intercept and condense downward liquid, the intercepted liquid is directly discharged or reheated to be changed into steam and then enters the tower body, and the liquid interception and gas rising structure is combined, so that the structure is simple and the application is efficient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of a multi-draft tube liquid trap of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a sectional view B-B of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
As shown in fig. 1, the following technical solutions are adopted in the present embodiment: including tower body 19, tower body 19's top and bottom are equipped with upper cover 14 and low head 4 respectively, tower body 19's bottom is passed through skirt 2 and is supported, inspection hole 1 has been seted up to 2 side below of skirt, several manhole 16 has been seted up in the outside of tower body 19, bottom reboiler feed inlet 3 and liquid outlet 20 have been seted up on the low head 4 of tower body 19 bottom, bottom reboiler 21 is installed in the below outside of tower body 19, bottom reboiler 21's bottom and bottom reboiler feed inlet 3 intercommunication, bottom reboiler return inlet 5 has been seted up to the below side of tower body 19, bottom reboiler 21's top and bottom reboiler return inlet 5 intercommunication, cauldron liquid in the tower body 19 is heated and is become steam in getting into bottom reboiler 21 from bottom reboiler feed inlet 3, steam is sent into tower body 19 inside from bottom return inlet 5 again.
And a gas outlet 15 is formed in the upper end enclosure 14 at the top of the tower body 19, and finally the non-condensable gas is discharged from the gas outlet 15.
The side surface of the tower body 19 is respectively provided with a liquid feed inlet 18, a side reboiler feed inlet 7, a side reboiler return inlet 8, an aldehyde-containing liquid outlet 9, an EO product outlet 11 and a return inlet 12 from bottom to top, liquid feed inlet 18 is located bottom reboiler return opening 5 top, side reboiler 22 is installed in the tower body 19 outside, side reboiler 22's bottom and side reboiler feed opening 7 intercommunication, side reboiler 22's top and side reboiler return opening 8 intercommunication, liquid feed inlet 18 intercommunication has feeding liquid distributor 17, the inside of tower body 19 is located to feeding liquid distributor 17 level, feeding liquid distributor 17's bottom evenly distributed has a plurality of liquid holes, return opening 12 intercommunication has backward flow liquid distributor 13, the inside of tower body 19 is located to backward flow liquid distributor 13 level, the export evenly distributed of backward flow liquid distributor 13 has a plurality of liquid holes.
Crude EO liquid enters the feeding liquid distributor 17 from the liquid feeding port 18, flows downwards through the liquid outlet hole and enters the tower body 19 for heat transfer, because the tower body 19 is higher, when gas reaches the middle part of the tower body 19, the temperature is reduced, condensed liquid is fed into the side reboiler 22 from the side reboiler feeding port 7, is heated and turned into steam again, and then enters the tower body 19 from the side reboiler return port 8 to continuously rise, some aldehyde substances and substances with the similar boiling point to the aldehyde substances are condensed into liquid flowing downwards, and are extracted from the aldehyde-containing liquid outlet 9, and the EO product is discharged from the EO product outlet 11.
Five sections of fillers are arranged in the tower body 19, the five sections of fillers are respectively a first filler 6-1, a second filler 6-2, a third filler 6-3, a fourth filler 6-4 and a fifth filler 6-5 from bottom to top, the first filler 6-1 is arranged between the bottom reboiler return opening 5 and the liquid feed opening 18, the second filler 6-2 is arranged between the liquid feed opening 18 and the side reboiler feed opening 7, the third filler 6-3 is arranged between the side reboiler return opening 8 and the aldehyde-containing liquid outlet 9, the fourth filler 6-4 is arranged between the aldehyde-containing liquid outlet 9 and the EO product outlet 11, and the fifth filler 6-5 is arranged between the EO product outlet 11 and the return opening 12.
Three multi-riser liquid collectors 10 are arranged inside the tower body 19, the three multi-riser liquid collectors 10 are respectively arranged at a feed inlet 7 of the side reboiler, an aldehyde-containing liquid outlet 9 and an EO product outlet 11, and the three multi-riser liquid collectors 10 are respectively arranged between the second filler 6-2 and the third filler 6-3, between the third filler 6-3 and the fourth filler 6-4, and between the fourth filler 6-4 and the fifth filler 6-5.
As shown in figure 2-4, the multi-riser liquid trap 10 comprises a drainage cone 10-1, a plurality of support ribs 10-2, a plurality of risers 10-3 and a ladder liquid trap plate 10-4, wherein the plurality of risers 10-3 are arranged on the ladder liquid trap plate 10-4, through holes are arranged on the ladder liquid trap plate 10-4 and are communicated with the risers 10-3, the support ribs 10-2 are welded on the inner wall of the top of the risers 10-3, the upper ends of the support ribs 10-2 support the drainage cone 10-1, the support ribs 10-2 are three and support in a triangular shape, a gap is reserved between the bottom of the drainage cone 10-1 and the top of the risers 10-3, gas enters the risers 10-3 through the through holes on the ladder liquid trap plate 10-4 and then enters the multi-riser liquid trap plate through the gap between the drainage cone 10-1 and the top of the risers 10-3 Above the liquid container 10.
The ladder liquid collecting plates 10-4 are in a ladder shape, the ladder liquid collecting plates 10-4 are installed on the inner wall of the tower body 19, one side, higher than the ladder liquid collecting plates 10-4, of each ladder liquid collecting plate supports the plurality of gas risers 10-3, one side, lower than the ladder liquid collecting plates 10-4, of each ladder liquid collecting plate is respectively communicated with the side reboiler feed inlet 7, the aldehyde-containing liquid outlet 9 and the EO product outlet 11, and one side, lower than the ladder liquid collecting plates 10-4, of each ladder liquid collecting plate is respectively arranged below the side reboiler feed inlet 7, the aldehyde-containing liquid outlet 9 and the EO product outlet 11.
The working principle and the process are as follows: the kettle liquid is a plurality of heavy substances with higher boiling points, the kettle liquid is arranged at the bottom in the tower body 19, enters the bottom reboiler 21 from the feeding port 3 of the bottom reboiler and is heated to be changed into steam, the steam is re-sent into the tower body 19 from the return port 5 of the bottom reboiler, the steam upwards passes through the first packing 6-1 and is in heat transfer with crude EO liquid flowing downwards from the feeding liquid distributor 17, so that some substances with lower boiling points in the liquid are changed into steam rising upwards, wherein the substances comprise aldehydes, EO and light substances with low boiling points, and of course, a small amount of heavy substances are also remained;
the gas enters the second packing 6-2 at the upper section, the temperature is slightly reduced, part of heavier substances are condensed into liquid and flow downwards, while the aldehydes, EO and light substances with lower boiling points continue to rise upwards, pass through the gas-lift tube 10-3 of the multi-gas-lift tube liquid collector 10 at the feed inlet 7 of the side reboiler and reach the space above the multi-gas-lift tube liquid collector 10, at the moment, the temperature is further reduced, partial aldehydes and EO begin to be condensed into liquid, if the height is further increased, the temperature is reduced, some light impurities are possibly condensed and mixed in the EO, and the separation task is not completed at the moment, so that the energy is insufficient, therefore, a side reboiler 22 is added, the aldehydes and EO condensed therein are reheated to become steam, in order to ensure that the temperature gradient in the tower 19 from the point upwards is maintained in the desired state, the reflux liquid can also obtain sufficient heat;
condensed liquid is fed from the side reboiler feed port 7 to the side reboiler 22, heated to be turned into vapor again, and fed from the side reboiler return port 8 to the column 19, the vapor is fed to the third packing 6-3, and a small amount of heavier components is condensed into liquid flowing down to the multi-riser liquid collector 10 at the side reboiler feed port 7, and fed to the side reboiler 22 for circulation, and relatively pure EO and aldehydes and lighter materials are condensed into liquid flowing down to the fourth packing 6-4 above the aldehyde-containing liquid outlet 9 through the riser 10-3 of the multi-riser liquid collector 10 at the aldehyde-containing liquid outlet 9, where the temperature is slightly lowered, and some of the aldehydes and materials having a boiling point similar to that of the aldehydes are condensed into liquid flowing down to the multi-riser liquid collector 10, and then withdrawn from the aldehyde-containing liquid outlet 9, and EO and gases having a lower boiling point than that of the EO product outlet 11 pass through the riser 10-3 of the multi-riser liquid collector 10 at the EO product outlet 11 In the topmost fifth packing 6-5, the relatively low temperature EO liquid fed from the return port 12 is encountered in the fifth packing 6-5, the EO gas therein is absorbed by the EO liquid and then flows down to the multi-riser liquid collector 10 at the EO product outlet 11, and is collected from the EO product outlet 11, the rest of the non-condensable gas flows away from the gas outlet 15, a part of the kettle liquid participates in the reboiler circulation, and the rest is continuously pumped away from the liquid outlet 20.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a EO refining tower, includes the tower body, the top and the bottom of tower body are equipped with upper cover and low head respectively, and the bottom of tower body is passed through the skirt and is supported, the inspection hole has been seted up to skirt side below, and several manhole, its characterized in that have been seted up in the outside of tower body: a feeding port of a bottom reboiler and a liquid outlet are formed in a lower end socket at the bottom of the tower body, a bottom reboiler is installed on the outer side below the tower body, the bottom of the bottom reboiler is communicated with the feeding port of the bottom reboiler, a bottom reboiler return port is formed in the side surface below the tower body, and the top of the bottom reboiler is communicated with the bottom reboiler return port;
a gas outlet is formed in the upper end enclosure at the top of the tower body;
the side surface of the tower body is respectively provided with a liquid feed inlet, a side reboiler return opening, an aldehyde-containing liquid outlet, an EO product outlet and a return opening from bottom to top, the liquid feed inlet is arranged above the bottom reboiler return opening, a side reboiler is arranged on the outer side of the tower body, the bottom of the side reboiler is communicated with the side reboiler feed inlet, and the top of the side reboiler is communicated with the side reboiler return opening;
the tower body is internally provided with five sections of fillers, the five sections of fillers are respectively a first filler, a second filler, a third filler, a fourth filler and a fifth filler from bottom to top, the first filler is arranged between a return port of a reboiler at the bottom and a liquid feed port, the second filler is arranged between the liquid feed port and a feed port of the side reboiler, the third filler is arranged between the return port of the side reboiler and an aldehyde-containing liquid outlet, the fourth filler is arranged between the aldehyde-containing liquid outlet and an EO product outlet, and the fifth filler is arranged between the EO product outlet and the return port;
the tower body is internally provided with three multi-riser liquid collectors, the three multi-riser liquid collectors are respectively arranged at a feed inlet of the side reboiler, an aldehyde-containing liquid outlet and an EO product outlet, and the three multi-riser liquid collectors are respectively arranged between the second filler and the third filler, between the third filler and the fourth filler, and between the fourth filler and the fifth filler.
2. An EO finishing column as recited in claim 1, wherein: the liquid feed inlet is communicated with a feeding liquid distributor, the feeding liquid distributor is horizontally arranged in the tower body, and a plurality of liquid outlet holes are uniformly distributed in the bottom of the feeding liquid distributor.
3. An EO finishing column as recited in claim 1, wherein: the reflux opening is communicated with a reflux liquid distributor, the reflux liquid distributor is horizontally arranged in the tower body, and a plurality of liquid outlet holes are uniformly distributed at the outlet of the reflux liquid distributor.
4. An EO finishing column as recited in claim 1, wherein: the multi-riser liquid collector comprises a drainage cone, a support rib, a riser and a stepped liquid collecting plate, wherein a plurality of risers are arranged on the stepped liquid collecting plate, the stepped liquid collecting plate is provided with through holes, the through holes are communicated with the riser, the support rib is welded on the inner wall of the top of the riser, the upper end of the support rib supports the drainage cone, and a gap is reserved between the bottom of the drainage cone and the top of the riser;
the ladder liquid collecting plate is in a ladder shape, the ladder liquid collecting plate is arranged on the inner wall of the tower body, one side, high in the ladder liquid collecting plate, supports the plurality of gas risers, one side, low in the three ladder liquid collecting plates, of the ladder liquid collecting plate is communicated with a feeding port of the side reboiler, an aldehyde-containing liquid outlet and an EO product outlet respectively, and one side, low in the three ladder liquid collecting plates, of the ladder liquid collecting plate is arranged below the feeding port of the side reboiler, the aldehyde-containing liquid outlet and the EO product outlet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052814.8U CN215609430U (en) | 2021-08-30 | 2021-08-30 | EO refining tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052814.8U CN215609430U (en) | 2021-08-30 | 2021-08-30 | EO refining tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215609430U true CN215609430U (en) | 2022-01-25 |
Family
ID=79903494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122052814.8U Active CN215609430U (en) | 2021-08-30 | 2021-08-30 | EO refining tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215609430U (en) |
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2021
- 2021-08-30 CN CN202122052814.8U patent/CN215609430U/en active Active
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Address after: 9 Huaxing Road, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province, 226500 Patentee after: Jiangsu Yongda Chemical Machinery Co.,Ltd. Address before: 9 Huaxing Road, Jiuhua Town, Rugao City, Nantong City, Jiangsu Province, 226500 Patentee before: JIANGSU YONGDA CHEMICAL MACHINERY CO.,LTD. |