CN220223918U - Device for reducing COD (chemical oxygen demand) of acidic water at top of catalytic fractionation tower - Google Patents
Device for reducing COD (chemical oxygen demand) of acidic water at top of catalytic fractionation tower Download PDFInfo
- Publication number
- CN220223918U CN220223918U CN202321804196.0U CN202321804196U CN220223918U CN 220223918 U CN220223918 U CN 220223918U CN 202321804196 U CN202321804196 U CN 202321804196U CN 220223918 U CN220223918 U CN 220223918U
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- China
- Prior art keywords
- water tank
- water
- connecting pipe
- fixedly arranged
- hydrocyclone
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 26
- 238000005194 fractionation Methods 0.000 title claims description 26
- 239000000126 substance Substances 0.000 title abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 title abstract description 7
- 239000001301 oxygen Substances 0.000 title abstract description 7
- 230000002378 acidificating effect Effects 0.000 title description 17
- 239000002253 acid Substances 0.000 claims abstract description 12
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a device for reducing COD (chemical oxygen demand) of acid water at the top of a catalytic fractionating tower, which comprises a hydrocyclone oil remover and a fractionating tower, wherein a third connecting pipe is fixedly connected with the water outlet end of the hydrocyclone oil remover, a second water tank is fixedly arranged at one end of the third connecting pipe, which is far away from the hydrocyclone oil remover, a filter screen is symmetrically and fixedly arranged on the inner wall of the second water tank, a first water tank is fixedly arranged at the top of the second water tank, a control module is fixedly arranged on the outer wall of the first water tank, a second electromagnetic valve is fixedly arranged at the bottom of the inner wall of the first water tank, the second electromagnetic valve penetrates through the tops of the first water tank and the second water tank and extends to the inside of the second water tank, and a fourth connecting pipe is fixedly arranged at the top of the second electromagnetic valve, so that the problem that when the device is in a prying block phenomenon, the water oil separation effect of the device is reduced, part of oil drops can be brought into an acid water stripping tower and a reboiler is solved.
Description
Technical Field
The utility model relates to the technical field of catalytic fractionation, in particular to a device for reducing COD (chemical oxygen demand) aiming at acidic water at the top of a catalytic fractionation tower.
Background
At the beginning of the 20 th century, petroleum became one of the main sources of world energy, and the oil refining industry began to develop vigorously. However, the current oil refining technology is simpler, only a few basic compounds can be separated, the production of petroleum products under different demands cannot be met, and in order to meet the market demands, the oil refining technology starts to develop in a high-grade direction, and a series of new oil refining processes are developed. The catalytic fractionation technology is an important process, different varieties and specifications of petroleum products are obtained by separating substances with different boiling points from petroleum, the catalytic fractionation technology is an important branch of the fractionation technology, a catalyst is added in the fractionation process to promote chemical reaction among molecules, so that a higher-grade product is obtained at the same fractionation temperature, wherein the catalytic fractionation tower is core equipment in the catalytic fractionation technology, and the catalyst is mixed with fractions to enable the catalyst to play a role in the fractionation process, so that oil separation and upgrading are realized, and in order to prevent acidic oil drops generated after the treatment of the catalytic fractionation tower from being brought into an acidic water stripping tower and a reboiler, the water cyclone oil remover can be used for separating oil from water from acidic water.
When the existing hydrocyclone oil remover is in use, when the inlet flow is too large, the inlet is unreasonable in design or a sedimentation tank accumulates sediment, unstable water flow and abnormal vortex are caused, so that when a prying block phenomenon is formed in the cyclone, the water-oil separation effect of the device is affected, and partial oil drops are brought into an acid water stripper and a reboiler.
Disclosure of Invention
The utility model aims to solve the defect that separated acid water still contains oil when a hydraulic cyclone oil remover has a prying block phenomenon in the prior art, and provides a device for reducing COD (chemical oxygen demand) aiming at acid water at the top of a catalytic fractionation tower.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a device to catalytic fractionation top of tower acid water reduces COD, including hydrocyclone degreaser and fractionating tower, hydrocyclone degreaser aporate fixedly connected with third connecting pipe, the one end fixed mounting that hydrocyclone degreaser was kept away from to the third connecting pipe has the second water tank, the inner wall symmetry fixed mounting of second water tank has the filter screen, the top fixed mounting of second water tank has first water tank, the outer wall fixed mounting of first water tank has control module, the inner wall bottom fixed mounting of first water tank has the second solenoid valve, the second solenoid valve runs through the top of first water tank and second water tank and extends to the inside of second water tank, the top fixed mounting of second solenoid valve has the fourth connecting pipe.
Preferably, the fractionating tower discharge port is fixedly provided with a second connecting pipe, and one end of the second connecting pipe, which is far away from the fractionating tower, is fixedly provided with a water inlet of the hydrocyclone oil remover.
Preferably, the oil outlet of the hydrocyclone oil remover is fixedly provided with a first connecting pipe, and the end of the first connecting pipe away from the hydrocyclone oil remover is fixedly arranged above the side wall of the fractionating tower.
Preferably, a water outlet pipe is fixedly arranged at one end of the second water tank, which is far away from the third connecting pipe.
Preferably, the water outlet pipe is fixedly provided with a first electromagnetic valve.
Preferably, the first connecting tube extends through a side wall of the fractionation column to the interior of the fractionation column.
The utility model has the following beneficial effects:
according to the utility model, through adding the first water tank, the fourth connecting pipe, the second electromagnetic valve, the filter screen and the control module, the problem that when the hydraulic cyclone oil remover is used for treating acidic water, the oil drops in the discharged material can be filtered and treated under the condition of poor oil-water separation effect, and the COD (chemical oxygen demand) can be effectively reduced, so that the problem that when the device is used for treating the acidic water, the water-oil separation effect of the device is reduced, and part of the oil drops can be brought into the acidic water stripping tower and the reboiler is solved.
Drawings
FIG. 1 is a schematic diagram showing the front view of a device for reducing COD in acidic water at the top of a catalytic fractionation tower according to the present utility model;
FIG. 2 is a schematic diagram showing the assembly structure of a filter screen of a device for reducing COD in acidic water at the top of a catalytic fractionation tower according to the present utility model;
FIG. 3 is a schematic diagram showing an assembly structure of a second electromagnetic valve for a device for reducing COD in acidic water at the top of a catalytic fractionation tower according to the present utility model;
fig. 4 is an enlarged schematic view of the structure of fig. 1 a of an apparatus for reducing COD for catalytic fractionation of acidic water at the top of a column according to the present utility model.
In the figure: 1. a fractionating tower; 2. a first connection pipe; 3. a second connection pipe; 4. a hydrocyclone oil remover; 5. a third connection pipe; 6. a first water tank; 7. a fourth connection pipe; 8. a second electromagnetic valve; 9. a water outlet pipe; 10. a first electromagnetic valve; 11. a second water tank; 12. a control module; 13. and (3) a filter screen.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to figures 1-4, a device for reducing COD (chemical oxygen demand) of acid water at the top of a catalytic fractionating tower comprises a hydrocyclone oil remover 4 and the fractionating tower 1, wherein the acid water enters the hydrocyclone oil remover 4 from a tangential feed inlet under a certain pressure, a strong centrifugal force field is generated by fluid in the high-speed rotation process, and the water moves downwards and outwards under the action of the centrifugal force while rotating, so that an external rotational flow is finally formed and discharged from a underflow form; the oil moves inwards and upwards while rotating, finally, the inner rotational flow is formed and discharged through an overflow port in an overflow mode, so that separation tasks are completed, a second connecting pipe 3 is fixedly arranged at the discharge port of the fractionating tower 1, a water inlet of a hydrocyclone oil remover 4 is fixedly arranged at one end of the second connecting pipe 3 far away from the fractionating tower 1, a first connecting pipe 2 is fixedly arranged at the oil outlet of the hydrocyclone oil remover 4, the end of the first connecting pipe 2 far away from the hydrocyclone oil remover 4 is fixedly arranged above the side wall of the fractionating tower 1, the first connecting pipe 2 penetrates through the side wall of the fractionating tower 1 to extend into the fractionating tower 1, a third connecting pipe 5 is fixedly connected with the water outlet end of the hydrocyclone oil remover 4, a second water tank 11 is fixedly arranged at one end of the third connecting pipe 5 far away from the hydrocyclone oil remover 4, a filter screen 13 is symmetrically and fixedly arranged at the inner wall of the second water tank 11, active carbon can be placed between the two filter screens 13, a water outlet pipe 9 is fixedly arranged at one end of the second water tank 11 far away from the third connecting pipe 5, a first electromagnetic valve 10 is fixedly arranged on the water outlet pipe 9, a top of the second water tank 11 is fixedly arranged at the first electromagnetic valve 6, a control module 12 fixedly arranged at the outer wall of the first water tank 6 and the second water tank 12 extends to the top of the first electromagnetic valve 8, a control module 12 fixedly arranged at the second electromagnetic valve 8 and the top of the second water tank 8 extends to the top of the second electromagnetic valve 8, and the second electromagnetic valve 8 fixedly arranged at the top of the second water tank 8, and the second electromagnetic valve 8 and the top of the second electromagnetic valve 8 is fixedly arranged at the top of the second water tank 8, and the second electromagnetic valve 8, and the top control module and the control module.
The application method and the advantages of the utility model are as follows: when the device for reducing COD aiming at the acidic water at the top of the catalytic fractionation tower is used, the working process is as follows:
as shown in fig. 1, fig. 2, fig. 3 and fig. 4, when the device for reducing COD of acid water at the top of a catalytic fractionation tower is used, firstly, an external power supply is conducted to electric equipment in the device for reducing COD of acid water at the top of the catalytic fractionation tower, after the acid water is treated by a hydrocyclone oil remover 4, oil stains in the water are filtered by active carbon in two filter screens 13 before being discharged, and secondary filtration is conducted, so that the problem that when the device is in a skid phenomenon, the water-oil separation effect of the device is reduced, and part of oil drops are brought into an acid water stripping tower and a reboiler is solved.
When the acidic water passes between the two second water tanks 11, the control module 12 opens the fourth connecting pipe 7 to inject the sodium hydroxide NaOH or calcium hydroxide Ca (OH) 2 solution in the first water tank 6 into the second water tank 11 to neutralize the acidic water, so that COD is reduced, and the problem of higher COD of the acidic water is solved.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a device to catalytic fractionation top acid water reduces COD, includes hydrocyclone degreaser (4) and fractionating tower (1), its characterized in that: the water outlet end of the hydrocyclone oil remover (4) is fixedly connected with a third connecting pipe (5), one end of the third connecting pipe (5) far away from the hydrocyclone oil remover (4) is fixedly provided with a second water tank (11), the inner wall of the second water tank (11) is symmetrically and fixedly provided with a filter screen (13), the top of the second water tank (11) is fixedly provided with a first water tank (6), the control module (12) is fixedly arranged on the outer wall of the first water tank (6), the second electromagnetic valve (8) is fixedly arranged at the bottom of the inner wall of the first water tank (6), the second electromagnetic valve (8) penetrates through the tops of the first water tank (6) and the second water tank (11) and extends to the inside of the second water tank (11), and the fourth connecting pipe (7) is fixedly arranged at the top of the second electromagnetic valve (8).
2. The apparatus for reducing COD for catalytic fractionator overhead sour water according to claim 1, wherein: the fractionating tower (1) discharge gate fixed mounting has second connecting pipe (3), the one end that fractionating tower (1) was kept away from to second connecting pipe (3) is fixed mounting has the water inlet of hydrocyclone oil remover (4).
3. The apparatus for reducing COD for catalytic fractionator overhead sour water according to claim 1, wherein: the oil outlet of the hydrocyclone oil remover (4) is fixedly provided with a first connecting pipe (2), and the end, away from the hydrocyclone oil remover (4), of the first connecting pipe (2) is fixedly arranged above the side wall of the fractionating tower (1).
4. The apparatus for reducing COD for catalytic fractionator overhead sour water according to claim 1, wherein: and a water outlet pipe (9) is fixedly arranged at one end, far away from the third connecting pipe (5), of the second water tank (11).
5. The apparatus for reducing COD for catalytic fractionator overhead sour water according to claim 4, wherein: the water outlet pipe (9) is fixedly provided with a first electromagnetic valve (10).
6. A device for reducing COD for catalytic fractionation overhead sour water according to claim 3, wherein: the first connecting pipe (2) extends through the side wall of the fractionating tower (1) to the inside of the fractionating tower (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321804196.0U CN220223918U (en) | 2023-07-11 | 2023-07-11 | Device for reducing COD (chemical oxygen demand) of acidic water at top of catalytic fractionation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321804196.0U CN220223918U (en) | 2023-07-11 | 2023-07-11 | Device for reducing COD (chemical oxygen demand) of acidic water at top of catalytic fractionation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220223918U true CN220223918U (en) | 2023-12-22 |
Family
ID=89181989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321804196.0U Active CN220223918U (en) | 2023-07-11 | 2023-07-11 | Device for reducing COD (chemical oxygen demand) of acidic water at top of catalytic fractionation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220223918U (en) |
-
2023
- 2023-07-11 CN CN202321804196.0U patent/CN220223918U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |