CN112500888A - Rapid sump oil dehydration method - Google Patents
Rapid sump oil dehydration method Download PDFInfo
- Publication number
- CN112500888A CN112500888A CN202011358490.4A CN202011358490A CN112500888A CN 112500888 A CN112500888 A CN 112500888A CN 202011358490 A CN202011358490 A CN 202011358490A CN 112500888 A CN112500888 A CN 112500888A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- dirty oil
- sedimentation
- area
- horizontal
- 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.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
- C10G2300/1007—Used oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a method for quickly dehydrating dirty oil, which comprises the steps of heating the dirty oil to 70-80 ℃, and then treating the dirty oil by using an ultrasonic sedimentation integrated zone processor; the ultrasonic sedimentation integrated partition processor comprises a shell, and an ultrasonic area and a sedimentation area which are sequentially arranged in the shell; an ultrasonic transducer is arranged in the ultrasonic area, and a horizontal partition plate is arranged in the settlement area; the N horizontal clapboards divide the sedimentation area into N +1 horizontal sedimentation layers, and each horizontal sedimentation layer is provided with a purified oil outlet and a sewage outlet at the tail end of the shell. The method of the invention is continuous operation, can quickly and deeply dehydrate the dirty oil and can meet the requirement of recycling.
Description
Technical Field
The invention relates to a sump oil treatment method, in particular to a sump oil rapid dehydration method.
Background
In oil refineries or oil field production, dirty oil is generated in the processes of crude oil tank water cutting, reduced-top tank water cutting, equipment cleaning and the like, and the dirty oil has complex form, large water content, serious emulsification and high recovery and treatment difficulty.
The key for recycling the dirty oil is to dewater the dirty oil. If the single method is adopted for processing, the method comprises the following steps: thermal sedimentation, chemical demulsification and ultrasonic treatment, and the single method has lower dehydration efficiency. With the development of the technology, a plurality of methods are adopted for dewatering the dirty oil in a comprehensive way, such as: the method comprises the steps of chemical demulsification, ultrasonic treatment, sedimentation, heat treatment, chemical demulsifier, ultrasonic treatment and sedimentation, wherein after ultrasonic treatment, materials are transferred or conveyed to another device for sedimentation, and when dirty oil is transferred or conveyed to the sedimentation device from the ultrasonic device, the phenomena of remixing, shearing and emulsification of water drops and the dirty oil can occur, so that the dehydration efficiency is reduced.
Disclosure of Invention
The invention aims to provide a method for quickly and deeply dewatering dirty oil, which can meet the requirement of recycling.
The invention adopts the following technical scheme:
a method for quickly dehydrating dirty oil comprises the steps of heating dirty oil to 70-80 ℃, and then treating the dirty oil by using an ultrasonic sedimentation integrated partition processor.
The ultrasonic sedimentation integrated partition processor comprises a shell, and an ultrasonic area and a sedimentation area which are sequentially arranged in the shell; an ultrasonic transducer is arranged in the ultrasonic area, and a horizontal partition plate is arranged in the settlement area; the N horizontal clapboards divide the sedimentation area into N +1 (N is a positive integer more than or equal to 2) horizontal sedimentation layers, and each horizontal sedimentation layer is provided with a purified oil outlet and a sewage outlet at the tail end of the shell.
The front end of the ultrasonic area is provided with an inlet section with the interior being streamline, and the front end of the inlet section is provided with a sump oil inlet flange.
And the dirty oil flows from the processor ultrasonic area to the settling area in a flow speed sequence of 0.3 m/h, the time for the dirty oil to flow through the ultrasonic area is 20-30 min, and the time for the dirty oil to flow through the settling area is 10-12 h.
Wherein the ultrasonic sound intensity of the ultrasonic area is 0.60-0.70W/cm2。
The shell is provided with a fixed cylinder, and the ultrasonic transducer and the fixed cylinder are fixed through a fixed flange.
The ultrasonic transducers are positioned on the same horizontal plane and are oppositely arranged on two sides of the shell at intervals.
Wherein, a plurality of ultrasonic transducers are positioned on the horizontal plane of the center of the shell.
Wherein, every the oil outlet and the sewage outlet of purifying on horizontal sedimentation layer are diagonal angle setting, just it is higher than the sewage outlet to purify the oil outlet.
Preferably, the housing is shaped as a rectangular parallelepiped. The number of the partition plates is 2-3, and the length of each partition plate is consistent with that of the settling zone; the length-width ratio of the processor is 3: 1-4: 1, and the length ratio of the ultrasonic zone to the settling zone is 1: 30-1: 40.
The invention has the beneficial effects that:
(1) the method is continuous operation, and can realize rapid and deep dehydration of the sump oil by ultrasonic sedimentation integrated zone treatment, shortening the sedimentation distance of water drops in the sump oil and improving the sedimentation speed of the water drops in the sump oil.
(2) The ultrasonic sedimentation integrated partition setting of the processor ensures that the dirty oil flows through the processor in a partition sequence and is conveyed to the sedimentation area from the ultrasonic area without the phenomenon of remixing, shearing and emulsification of water drops and the dirty oil.
(3) The ultrasonic sedimentation integrated partition setting of the processor strengthens the functions of the ultrasonic area and the sedimentation area, the ultrasonic area has the sedimentation effect, and partial sedimentation area has the ultrasonic effect, so that the dehydration effect can be enhanced.
(4) The sedimentation area of the treater is of a multi-layer flat structure, so that the sedimentation distance can be shortened, and the treatment capacity can be increased.
(5) The viscosity of the sump oil can be reduced and the oil-water density difference can be increased by adopting heat treatment; the ultrasonic treatment makes the small water drops in the dirty oil coalesce into large water drops, and the diameter of the water drops is increased to improve the sedimentation speed (the water drops are settled in the region of Stokes' law in the dirty oil).
(6) The dirty oil contains chemical demulsifier, which can replace emulsifier molecule to form new interface film with low strength, providing favorable condition for water drop coalescence in dirty oil, and further improving treatment effect by combining heat treatment and ultrasonic sedimentation integrated partition setting of the processor.
Drawings
FIG. 1 is an overall process flow diagram of the present invention.
Fig. 2 is a structural schematic diagram of an ultrasonic sedimentation integrated partition processor.
Fig. 3 is a left side view of the structure of fig. 2.
Fig. 4 is a schematic top view of fig. 2.
The device comprises a shell 1, an ultrasonic area 2, a settling area 3, an ultrasonic transducer 4, a horizontal partition plate 5, a horizontal settling layer 6, a purified oil outlet 7, a sewage outlet 8, an inlet section 9, a dirty oil inlet flange 10, a fixed cylinder 11, a fixed flange 12, a dirty oil storage tank 13, a pump 14, a heat exchanger 15, a flow meter 16, a purified oil storage tank 17, a sewage storage tank 18 and a steam generator 19.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
A method for quickly dehydrating dirty oil comprises pumping dirty oil (dirty oil is obtained from a refinery and has a water content of 20%) stored in a dirty oil storage tank 13 into a heat exchanger 15 by a pump 14 for heating, regulating and controlling the flow rate to 0.3 m/h by a flowmeter 16 after the dirty oil is heated to 75 ℃, and then feeding the dirty oil into an ultrasonic sedimentation integrated zone processor for treatment. The heat exchanger is heated by a steam generator 19. The general flow chart of the treatment process is shown in fig. 1.
As shown in fig. 2 to 4, the ultrasonic sedimentation integrated zone processor comprises a shell 1, and an ultrasonic zone 2 and a sedimentation zone 3 which are sequentially arranged in the shell 1; the shell 1 is a cuboid, the length-width ratio of the shell is 3: 1, and the height is 200 mm. The length ratio of the ultrasonic zone 2 to the settling zone 3 is 1: 30. An ultrasonic transducer 4 is arranged in the ultrasonic area 2, the frequency of the ultrasonic transducer is 20 kHz, and the power is 2 kW. A horizontal partition plate 5 is arranged in the settling zone 3; the quantity of horizontal baffle is one, divides subsides district 1 into two horizontal settlement layers 6, and every horizontal settlement layer 6 all is provided with purified oil outlet 7 and sewage outlet 8 at casing 1 tail end.
The five ultrasonic transducers 4 are positioned on the same horizontal plane and are oppositely arranged at intervals on two sides of the shell 1. The ultrasonic transducer 4 is located at the central horizontal plane of the housing 1.
The front end of the ultrasonic area 2 is provided with an inlet section 9 with a streamline inside, the front end of the inlet section 9 is provided with a sump oil inlet flange 10, and the sump oil inlet flange is connected with an outlet pipeline of the flowmeter.
The ultrasonic sound intensity of the ultrasonic area 2 is 0.60W/cm2. The time for the dirty oil to flow through the ultrasonic area 2 is 20 min, and the time for the dirty oil to flow through the settling area 3 is 12 h.
The side wall of the shell 1 is provided with a fixed cylinder 11, and the ultrasonic transducer 4 and the fixed cylinder 11 are fixed through a fixed flange 12.
Every the purified oil outlet 7 and the sewage outlet 8 of horizontal sedimentation layer 6 are diagonally arranged, just purified oil outlet 7 is higher than sewage outlet 8. The treated purified oil (with water content of 0.92%) enters the purified oil storage tank 17 through a purified oil outlet by a pipeline, and the sewage obtained after treatment enters the sewage storage tank 18 through a sewage outlet by a pipeline to wait for further treatment.
The method is a continuous operation process, when the stable operation state is not reached in the initial starting stage, the dirty oil treated by the ultrasonic sedimentation integrated zone processor cannot reach the recovery standard, and the dirty oil which does not reach the standard is returned to the dirty oil storage tank through the purified oil outlet and the sewage outlet through a loop for repeated treatment until the qualified purified oil is obtained through treatment and then enters the purified oil storage tank.
Example 2
The difference from the embodiment 1 is only that: heating dirty oil to 75 deg.C, regulating flow rate of the flow meter to 0.3 m/h, adjusting shell length-to-width ratio to 3.5: 1, length ratio of ultrasonic region to settling region to 1: 35, and number of horizontal partition plates to 2, wherein ultrasonic sound intensity of the ultrasonic region is 0.65W/cm2. The time for the dirty oil to flow through the ultrasonic zone is 25 min, and the time for the dirty oil to flow through the settling zone is 11 h.
The initial water content of the dirty oil was 20% as in example 1, and after treatment, the water content of the purified oil was 0.85%.
Example 3
The difference from the embodiment 1 is only that: heating dirty oil to 80 deg.C, regulating flow rate of the flow meter to 0.3 m/h, adjusting shell length-to-width ratio to 4: 1, length ratio of ultrasonic region to settling region to 1: 40, and number of horizontal partition plates to 3, wherein ultrasonic sound intensity of the ultrasonic region is 0.70W/cm2. The time for the dirty oil to flow through the ultrasonic zone is 30 min, and the time for the dirty oil to flow through the settling zone is 10 h.
The initial water content of the dirty oil was 20% as in example 1, and after treatment, the water content of the purified oil was 0.71%.
The above embodiments are merely preferred examples of the present invention and are not exhaustive of the possible implementations of the present invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. A method for quickly dehydrating dirty oil is characterized in that the dirty oil is heated to 70-80 ℃ and then treated by an ultrasonic sedimentation integrated zone processor;
the ultrasonic sedimentation integrated partition processor comprises a shell (1), and an ultrasonic area (2) and a sedimentation area (3) which are sequentially arranged in the shell (1); an ultrasonic transducer (4) is arranged in the ultrasonic area (2), and a horizontal partition plate (5) is arranged in the settlement area (3); n horizontal baffle (5) divide subside district (1) into N +1 horizontal settlement layer (6), and every horizontal settlement layer (6) all is provided with purified oil export (7) and sewage outlet (8) at casing (1) tail end.
2. The method for rapidly dehydrating the dirty oil according to the claim 1, wherein the front end of the ultrasonic zone (2) is provided with an inlet section (9) with an internal streamline shape, and the front end of the inlet section (9) is provided with a dirty oil inlet flange (10).
3. The method for rapidly dehydrating the dirty oil according to claim 1, wherein the time for flowing the dirty oil through the ultrasonic zone (2) is 20-30 min, and the time for flowing the dirty oil through the settling zone (3) is 10-12 h.
4. The method for rapidly dehydrating the sump oil according to claim 1, wherein the ultrasonic sound intensity of the ultrasonic area (2) is 0.60-0.70W/cm2。
5. The method for rapidly dehydrating the dirty oil according to claim 1, wherein a fixed cylinder (11) is arranged on the housing (1), and the ultrasonic transducer (4) and the fixed cylinder (11) are fixed through a fixed flange (12).
6. The method for rapidly dehydrating the dirty oil according to claim 1, wherein a plurality of the ultrasonic transducers (4) are positioned on the same horizontal plane and are oppositely arranged at intervals on two sides of the shell (1).
7. A method for quickly dewatering dirty oil according to claim 6, characterized in that several ultrasonic transducers (4) are located on the central horizontal plane of the housing (1).
8. A method for rapidly dewatering contaminated oil according to claim 1, wherein the purified oil outlet (7) and the contaminated water outlet (8) of each of the horizontal sedimentation layers (6) are diagonally arranged, and the purified oil outlet (7) is higher than the contaminated water outlet (8).
9. The method for rapidly dehydrating the dirty oil according to claim 1, wherein the casing (1) is rectangular parallelepiped in shape.
10. The method for rapidly dehydrating the dirty oil according to claim 1, wherein the ratio of the lengths of the ultrasonic zone (2) and the settling zone (3) is 1: 30-1: 40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011358490.4A CN112500888A (en) | 2020-11-27 | 2020-11-27 | Rapid sump oil dehydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011358490.4A CN112500888A (en) | 2020-11-27 | 2020-11-27 | Rapid sump oil dehydration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112500888A true CN112500888A (en) | 2021-03-16 |
Family
ID=74967334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011358490.4A Pending CN112500888A (en) | 2020-11-27 | 2020-11-27 | Rapid sump oil dehydration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112500888A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482212A (en) * | 2003-07-18 | 2004-03-17 | 中国石油化工集团公司 | Electric dewatering and desalting appliance for crude oil |
| CN102895804A (en) * | 2011-07-27 | 2013-01-30 | 中国石油化工股份有限公司 | Supersonic demulsifying dehydration device |
| US20140251874A1 (en) * | 2013-03-08 | 2014-09-11 | Exxonmobil Research And Engineering Company | Separator for desalting petroleum crude oils having rag layer withdrawal |
-
2020
- 2020-11-27 CN CN202011358490.4A patent/CN112500888A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482212A (en) * | 2003-07-18 | 2004-03-17 | 中国石油化工集团公司 | Electric dewatering and desalting appliance for crude oil |
| CN102895804A (en) * | 2011-07-27 | 2013-01-30 | 中国石油化工股份有限公司 | Supersonic demulsifying dehydration device |
| US20140251874A1 (en) * | 2013-03-08 | 2014-09-11 | Exxonmobil Research And Engineering Company | Separator for desalting petroleum crude oils having rag layer withdrawal |
Non-Patent Citations (1)
| Title |
|---|
| 张光明等: "《超声波水处理技术》", 30 September 2006, 中国建筑工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019072159A1 (en) | Washing and desalting device, washing and desalting method, desalting and dehydrating system, and desalting and dehydrating method | |
| CN102021019A (en) | Novel high-efficiency crude oil electric dehydration and desalination method and equipment | |
| CN106590731A (en) | Sealed treatment apparatus and sealed treatment process for SAGD produced fluid | |
| CN111040805B (en) | Crude oil pre-dehydration, deep dehydration and sewage oil removal integrated device and method | |
| WO2021032127A1 (en) | Treatment system for domestic wastewater | |
| CN107216912A (en) | A kind of oil field emulsifies Method for treatment of oil and processing unit always | |
| CN107957005B (en) | Petroleum pipeline scale prevention demulsification heating equipment and oil-gas-water separation method | |
| CN106318442B (en) | A kind of sump oil purification processing unit and purifying treatment method | |
| CN207330856U (en) | A kind of aging oil treatment system | |
| CN114540076A (en) | Crude oil extraction liquid double-field processing device | |
| CN215538628U (en) | Demulsification device for ASA resin production | |
| CN108217777B (en) | Oil-water separation module, oil-water separation system and method | |
| CN112500888A (en) | Rapid sump oil dehydration method | |
| CN104150735B (en) | A kind of combination unit and sludge drying method of latent heat self-cleaning dish reinforcement sludge dehydration | |
| CN210140556U (en) | High-efficient dewatering device of ageing crude oil vacuum flash distillation | |
| CN203474724U (en) | Oil-gas-water separating device | |
| CN209828342U (en) | Crude oil dehydration device | |
| CN201501845U (en) | Novel efficient electric crude oil dehydration and desalination equipment | |
| CN207716098U (en) | A kind of petroleum pipeline antiscale demulsification heating equipment | |
| CN217628249U (en) | Multi-electric-field electric desalting and dewatering system and equipment adopting vertical polar plates | |
| CN106698722B (en) | Oil-water separation device and application | |
| CN115784538A (en) | Oil-containing wastewater separation and filtration device and method | |
| CN204337838U (en) | A kind of coalescent oil filter device with ultrasonic dehydration | |
| CN213113217U (en) | Quick dewatering equipment of crude oil extraction liquid | |
| CN204298338U (en) | high-frequency pulse crude oil dehydration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |