CN220496640U - Horizontal decanter centrifuge cleaning device - Google Patents
Horizontal decanter centrifuge cleaning device Download PDFInfo
- Publication number
- CN220496640U CN220496640U CN202322012666.6U CN202322012666U CN220496640U CN 220496640 U CN220496640 U CN 220496640U CN 202322012666 U CN202322012666 U CN 202322012666U CN 220496640 U CN220496640 U CN 220496640U
- Authority
- CN
- China
- Prior art keywords
- oil
- cleaning
- product oil
- oil line
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 63
- 239000000047 product Substances 0.000 claims abstract description 74
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010926 purge Methods 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 239000013067 intermediate product Substances 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 239000011280 coal tar Substances 0.000 abstract description 9
- 239000007787 solid Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
Abstract
The utility model discloses a horizontal decanter centrifuge cleaning device, which comprises a product oil pipeline, an intermediate product oil pipeline, a cleaning oil main inlet pipe and a cleaning oil outlet pipe, wherein the product oil pipeline and the intermediate product oil pipeline are connected with the cleaning oil main inlet pipe together through a three-way interface, the tail end of the cleaning oil main inlet pipe is connected with a cleaning oil inlet of the horizontal decanter centrifuge, and the starting end of the cleaning oil outlet pipe is connected with a cleaning oil outlet of the horizontal decanter centrifuge; the tail end of the product oil line is provided with a product oil line valve bank, the front end of the product oil line is additionally provided with a product oil line nitrogen purging pipe, the tail end of the intermediate product oil line is provided with an intermediate product oil line valve bank, and the front end of the intermediate product oil line is additionally provided with an intermediate product oil line nitrogen purging pipe; the intermediate product oil in the coal tar deep processing technology is used as the cleaning medium of the horizontal decanter centrifuge, so that the cleaning cost of the centrifuge can be effectively reduced, and the cleaning of the centrifuge is ensured by the mutual standby of the intermediate product oil and the product oil.
Description
Technical Field
The utility model relates to the field of decanter centrifuges, in particular to a decanter centrifuge cleaning device.
Background
In the current coal tar deep processing technology, a raw material pretreatment procedure is generally arranged for removing solid impurities, moisture and most of colloid asphaltene in the coal tar raw material, providing high-quality raw materials for subsequent units and ensuring long-period stable operation of the subsequent hydrogenation unit catalyst. In the pretreatment process, in order to remove solid small particles and impurities in coal tar, a horizontal spiral centrifuge is generally adopted for treatment, and the principle is that the solid particles in the oil product are removed under the action of centrifugal force when the oil product passes through a rotating drum rotating at a high speed, and are discharged through a slag discharge port at the cone end of the rotating drum, and clean raw oil overflows from a large-end overflow port of the rotating drum and is discharged through a liquid discharge port. The horizontal decanter centrifuge can remove solid particles with the diameter larger than 50 micrometers, and has obvious separation effect.
In actual production, a lot of solid particles and oil sludge can be adhered and remained in the drum of the horizontal decanter centrifuge, and the horizontal decanter centrifuge needs to be cleaned when the horizontal decanter centrifuge is stopped or equipment is switched every time, so that production accidents caused by eccentric vibration when the horizontal decanter centrifuge is restarted are avoided. Because the coal tar has poor properties, the adhesiveness of the mixture of solid impurities and the oil sludge is strong, and the cleaning oil medium is generally used as the product oil of a coal tar deep processing fractionation unit. For a horizontal decanter centrifuge applied to the coal tar deep processing industry, the flow rate of product oil is generally required to reach several tons per hour during cleaning, and the cleaning time is generally about 1 hour, so that several tons of product oil are required for each centrifuge cleaning, and great waste exists.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a horizontal decanter centrifuge cleaning device.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
the washing device of the horizontal decanter centrifuge comprises a product oil pipeline, a washing oil main inlet pipe and a washing oil outlet pipe, wherein the product oil pipeline is connected with the washing oil main inlet pipe, the tail end of the washing oil main inlet pipe is connected with a washing oil inlet of the horizontal decanter centrifuge, and the starting end of the washing oil outlet pipe is connected with a washing oil outlet of the horizontal decanter centrifuge; the tail end of the product oil pipeline is provided with a product oil pipeline valve group, a main cleaning oil inlet pipe is provided with a centrifuge inlet valve, and a cleaning oil outlet pipe is provided with a cleaning oil outlet valve;
a three-way joint is arranged at the joint of the product oil pipeline and the cleaning oil main inlet pipe, so that the product oil pipeline and the intermediate product oil pipeline are connected with the cleaning oil main inlet pipe together; an intermediate oil line valve group is arranged at the tail end of the intermediate oil line, and an intermediate oil line nitrogen purging pipe is additionally arranged at the front end of the intermediate oil line valve group through a three-way interface; and a product oil line nitrogen purging pipe is additionally arranged at the front end of the product oil line valve group on the product oil line through a three-way interface.
As a further improvement of the technical scheme of the utility model, the product oil line valve bank comprises a product oil line power valve and a product oil line one-way valve which are connected in sequence, and the intermediate oil line valve bank comprises an intermediate oil line power valve and an intermediate oil line one-way valve which are connected in sequence.
As a further improvement of the technical scheme of the utility model, a product oil line nitrogen purging inlet valve is arranged on the product oil line nitrogen purging pipe, and an intermediate oil line purging inlet valve is arranged on the intermediate oil line nitrogen purging pipe.
As a further improvement of the technical scheme of the utility model, the cleaning medium used by the product oil pipeline is diesel oil.
As a further improvement of the technical scheme of the utility model, the cleaning medium used by the intermediate product oil pipeline is the pressure reducing tower top oil in the pretreatment process.
The utility model has the following beneficial effects:
(1) Intermediate product oil with the property close to that of the product oil in the coal tar deep processing technology is used as a cleaning medium of the horizontal decanter centrifuge to replace the product oil with higher value, so that the cleaning cost of the centrifuge can be effectively reduced;
(2) The intermediate oil and the product oil are used as the cleaning medium of the horizontal decanter centrifuge and are reserved for each other, and in general, the intermediate oil is used as the main cleaning medium, so that when the supply of the intermediate oil is unstable, the intermediate oil can be quickly switched into the product oil, and the cleaning of the centrifuge is ensured;
(3) In order to ensure that two cleaning mediums do not cross each other in the switching process, nitrogen purging pipelines are respectively arranged on an intermediate oil pipeline and a product oil pipeline, and the former medium is purged to a centrifugal machine through purging nitrogen, so that the production safety and stability are ensured.
Drawings
The utility model is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a conventional decanter centrifuge cleaning apparatus;
FIG. 2 is a schematic diagram of an embodiment of the decanter centrifuge cleaning apparatus of the present utility model;
in the figure: the device comprises a 1-horizontal decanter centrifuge, a 2-cleaning oil main inlet pipe, a 3-product oil pipeline, a 4-cleaning oil outlet pipe, a 5-intermediate oil pipeline, a 21-centrifuge inlet valve, a 31-product oil line valve group, a 32-product oil line nitrogen purging pipe, a 33-product oil line main valve, a 41-cleaning oil outlet valve, a 51-intermediate oil line valve group, a 52-intermediate oil line nitrogen purging pipe, a 53-intermediate oil line main valve, a 311-product oil line power valve, a 312-product oil line one-way valve, a 321-product oil line purging inlet valve, a 511-intermediate oil line power valve, a 512-intermediate oil line power valve and a 521-intermediate oil line purging inlet valve.
Description of the embodiments
Fig. 1 is a schematic diagram of the composition of a conventional decanter centrifuge cleaning device, and fig. 2 shows an embodiment of the decanter centrifuge cleaning device of the present utility model.
As shown in comparison of fig. 1 and 2, the horizontal decanter centrifuge cleaning device comprises a product oil pipeline 3, an intermediate product oil pipeline 5, a cleaning oil main inlet pipe 2 and a cleaning oil outlet pipe 4, wherein the product oil pipeline 3 and the intermediate product oil pipeline 5 are connected with the cleaning oil main inlet pipe 2 together through a three-way interface, the tail end of the cleaning oil main inlet pipe 2 is connected with a cleaning oil inlet of the horizontal decanter centrifuge 1, and the starting end of the cleaning oil outlet pipe 4 is connected with a cleaning oil outlet of the horizontal decanter centrifuge 1.
The tail end of the product oil pipeline 3 is provided with a product oil line valve group 31 which comprises a product oil line power valve 311 and a product oil line one-way valve 312 which are sequentially connected, the front end of the product oil line valve group 31 on the product oil pipeline 3 is additionally provided with a product oil line nitrogen purging pipe 32 through a three-way interface, and the product oil line nitrogen purging pipe 32 is provided with a product oil line purging inlet valve 321; the end of the intermediate oil pipeline 5 is provided with an intermediate oil pipeline valve group 51 which comprises an intermediate oil pipeline power valve 511 and an intermediate oil pipeline one-way valve 512 which are sequentially connected, an intermediate oil pipeline nitrogen purging pipe 52 is additionally arranged at the front end of the intermediate oil pipeline valve group 51 through a three-way interface, and an intermediate oil pipeline purging inlet valve 521 is arranged on the intermediate oil pipeline nitrogen purging pipe 52.
The cleaning medium used in the product oil pipeline 3 is diesel oil; the cleaning medium used in the intermediate product oil pipeline 5 is the pressure reducing tower top oil in the pretreatment process.
In normal application, the intermediate product, namely the pressure reducing tower top oil in the pretreatment process, is used as a main cleaning medium of the decanter centrifuge, and at the moment, the product oil line main valve 33, the product oil line valve group 31 and the product oil line purging inlet valve 321 are all closed. When the supply of the pressure reducing tower top oil in the pretreatment process is unstable, firstly closing the intermediate oil line main valve 53, opening the intermediate oil line purging inlet valve 521, and purging the residual pressure reducing tower top oil in the centrifuge cleaning pipeline to the inside of the centrifuge drum by using purging nitrogen; after the purging is finished, the intermediate product oil line purging inlet valve 521 and the intermediate product oil line valve group 51 are sequentially closed, and then the product oil line main valve 33 and the product oil line valve group 31 are sequentially opened, and the centrifuge cleaning medium is replaced with product oil, namely diesel oil.
The utility model is not limited to the above embodiments, for example, according to the change of the properties of the mixture of solid impurities and sludge in coal tar, the product oil can be diesel oil or can be replaced by other oil products; the intermediate oil can be residual vacuum tower top oil, or can be replaced by other intermediate oil.
It will be apparent that the foregoing is only one embodiment, and not all embodiments, of the present utility model. Other modifications and equivalents of the present utility model, based on the embodiments of the present utility model, will be apparent to those of ordinary skill in the art without departing from the spirit and scope of the present utility model, and are intended to be encompassed in the scope of the appended claims.
Claims (5)
1. The washing device of the horizontal decanter centrifuge comprises a product oil pipeline (3), a washing oil main inlet pipe (2) and a washing oil outlet pipe (4), wherein the product oil pipeline (3) is connected with the washing oil main inlet pipe (2), the tail end of the washing oil main inlet pipe (2) is connected with a washing oil inlet of the horizontal decanter centrifuge (1), and the starting end of the washing oil outlet pipe (4) is connected with a washing oil outlet of the horizontal decanter centrifuge (1); the tail end of the product oil pipeline (3) is provided with a product oil pipeline valve group (31), a main cleaning oil inlet pipe (2) is provided with a centrifugal inlet valve (21), and a cleaning oil outlet pipe (4) is provided with a cleaning oil outlet valve (41);
the method is characterized in that: a three-way interface is arranged at the joint of the product oil pipeline (3) and the cleaning oil main inlet pipe (2), so that the product oil pipeline (3) and the intermediate product oil pipeline (5) are connected with the cleaning oil main inlet pipe (2) together; an intermediate oil line valve group (51) is arranged at the tail end of the intermediate oil line (5), and an intermediate oil line nitrogen purging pipe (52) is additionally arranged at the front end of the intermediate oil line valve group (51) through a three-way interface; and a product oil line nitrogen purging pipe (32) is additionally arranged at the front end of the product oil line valve group (31) on the product oil line (3) through a three-way interface.
2. A decanter centrifuge cleaning device according to claim 1, wherein: the product oil line valve group (31) comprises a product oil line power valve (311) and a product oil line one-way valve (312) which are connected in sequence, and the intermediate oil line valve group (51) comprises an intermediate oil line power valve (511) and an intermediate oil line one-way valve (512) which are connected in sequence.
3. A decanter centrifuge cleaning device according to claim 1, wherein: the product oil line nitrogen purging pipe (32) is provided with a product oil line purging inlet valve (321), and the intermediate oil line nitrogen purging pipe (52) is provided with an intermediate oil line purging inlet valve (521).
4. A decanter centrifuge cleaning device according to claim 1, wherein: the cleaning medium used in the product oil pipeline (3) is diesel oil.
5. A decanter centrifuge cleaning device according to claim 1, wherein: the cleaning medium used in the intermediate oil pipeline (5) is the pressure reducing tower top oil in the pretreatment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012666.6U CN220496640U (en) | 2023-07-28 | 2023-07-28 | Horizontal decanter centrifuge cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012666.6U CN220496640U (en) | 2023-07-28 | 2023-07-28 | Horizontal decanter centrifuge cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220496640U true CN220496640U (en) | 2024-02-20 |
Family
ID=89867731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322012666.6U Active CN220496640U (en) | 2023-07-28 | 2023-07-28 | Horizontal decanter centrifuge cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220496640U (en) |
-
2023
- 2023-07-28 CN CN202322012666.6U patent/CN220496640U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220496640U (en) | Horizontal decanter centrifuge cleaning device | |
| CN108434859A (en) | A kind of sewage disposal device | |
| CN203620451U (en) | Dedusting equipment for waste gas pretreatment | |
| CN102304413A (en) | Method for refining and regenerating high-quality rufous waste lubricating oil | |
| CN114031149B (en) | Kitchen waste oil-water separation membrane treatment method for reducing oil content of wastewater | |
| CN206051947U (en) | A kind of coal tar pretreatment combination size system | |
| CN103706162A (en) | Automatic filtering device for low-temperature coal tar and working method of automatic filtering device | |
| CN212128071U (en) | Catalytic cracking slurry oil industrialization takes off solid purifier | |
| CN210317273U (en) | Natural gas sand removing device | |
| CN114534335A (en) | Vacuum pump oil filtering device with spiral squeezer and application method | |
| CN209636135U (en) | The device of sulphur ammonium in a kind of reduction crude caprolactam | |
| CN210356155U (en) | Energy-saving desander | |
| CN106975323A (en) | One kind failure selexol process regenerative device of solution | |
| CN207861842U (en) | A kind of device of beer packaging production line switching various concentration product | |
| CN205392192U (en) | Filtration purification device of heterogeneous material | |
| CN211676421U (en) | Well chain oil alkali refining process centrifugation recovery unit | |
| CN204714648U (en) | A kind of dregs of beans leaches workshop washing water filtration unit | |
| CN217796732U (en) | Porous injection device with diluting and flushing functions | |
| CN216320404U (en) | Automatic filtering device for filtering solid particles in liquid | |
| CN220495791U (en) | Automatic back flush filter of two media | |
| CN216878756U (en) | Wet flue gas desulfurization liquid column tower slurry circulation main pipe on-line slurry discharge system | |
| CN203990945U (en) | A kind of donkey-hide gelatin liquid clarification filtration centrifugation systems | |
| CN219117375U (en) | Cold low-pressure gas-separation back-flushing filtering device for oil hydrogenation device | |
| CN217600665U (en) | System for improve coalescence dehydrator water oil separating effect | |
| CN206762453U (en) | Wire cleans waste water purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |