CN109276914A - A kind of aqueous sump oil processing method of superelevation - Google Patents
A kind of aqueous sump oil processing method of superelevation Download PDFInfo
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- CN109276914A CN109276914A CN201811442465.7A CN201811442465A CN109276914A CN 109276914 A CN109276914 A CN 109276914A CN 201811442465 A CN201811442465 A CN 201811442465A CN 109276914 A CN109276914 A CN 109276914A
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- Prior art keywords
- oil
- sump oil
- water
- aqueous
- superelevation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
Abstract
The present invention provides a kind of aqueous sump oil processing method of superelevation, and specific step is as follows for the method: the aqueous sump oil of aqueous 30-70% is sent to standing t minutes in surge tank, is pumped in whizzer and is pre-processed by feed pump；Pretreated sump oil enters transfer control fuel tank and stands 1/2t minutes, is pumped in oil-water separator by charging and further implements water-oil separating；Sump oil after water-oil separating goes to oily recycle bin, and the impurity/sewage separated after aqueous sump oil pretreatment in the sewage and step 1 after separation goes to transfer control water tank, is pumped to Sewage Disposal by discharging and is further processed.This method is used in conjunction by equipment, and reasonable time proportion, can be for change of properties is larger, total amount changes greatly, water content is floated, and biggish sump oil is handled, the processing time greatly shortens, and water-oil separating is complete, can reduce the discharge of pollutant, solves environmental issue.
Description
Technical field
The present invention relates to chemical fields, more particularly to a kind of aqueous sump oil processing method of petrochemical industry superelevation.
Background technique
It is existing under normal conditions, the sump oil of oil plant requires recycle and reuse, the aqueous sump oil separated
It needs to be further processed, downstream process can just be entered by reaching after subsequent receiving requires.Due to the floating sump oil in bilge well
Source is more miscellaneous, and oil property changes greatly, and sump oil total amount changes greatly, and larger difficulty is brought to subsequent processing, it is therefore desirable to have needle
To the sump oil and sewage of the treatment process processing bilge well of the research and development profession of property, economic benefit can be significantly improved and reduce dirt
The discharge of object is contaminated, the environmental issue on bilge well periphery is improved.
Currently, the processing of sump oil higher for water content, general still using storage still without good effective method
The method of tank sedimentation, takes a long time, and can not achieve and be totally separated from.
Summary of the invention
The purpose of the present invention is the processing of existing water content higher sump oil there are aiming at the problem that, it is aqueous to provide a kind of superelevation
Sump oil processing method has short processing time, separates complete advantage.
The technical scheme is that a kind of aqueous sump oil processing method of superelevation, specific step is as follows for the method:
(1) aqueous sump oil is sent to standing t minutes in surge tank, is pumped in whizzer and is carried out in advance by feed pump
Reason；
(2) pretreated sump oil enters transfer control fuel tank standing 1/2t minutes, is pumped to rotational flow oil-water point by charging
From further implementing water-oil separating in device；
(3) sump oil after water-oil separating goes to oily recycle bin, in the sewage and step 1 after separation after aqueous sump oil pretreatment
Impurity/the sewage separated goes to transfer control water tank, is pumped to Sewage Disposal by discharging and is further processed.
The aqueous sump oil of superelevation refers mainly to the aqueous sump oil that water content is 30-70%.
Residence time of the aqueous sump oil in whizzer is 1/3t-2/3t minutes.
Residence time of the aqueous sump oil in oil-water separator is 2/3t-t minutes.
T is certain time, depending on the water content of aqueous sump oil and total treating capacity.
Preferably, t 30min-60min.
It is further preferred that t is 30min.
The operation principle of the present invention is that: the oil water mixture that sump oil surge tank is separated is with certain flow velocity by tangent line side
To enter whizzer outer cylinder, first outer tube inner wall with a fixed angular speed rotation flow downward, in stoste solid particle and
Water droplet is acted on by centrifugal sedimentation, and biggish solid particle and biggish water droplet keep stoste tentatively net along outer tube inner wall spun down
Change；The stoste just purified enters inner cylinder by tangential direction again, with higher angular speed along intermediate cylinder rotation, sedimentation, just purifies
Lesser water droplet obtains bigger centrifugal force effect in stoste, and lesser water droplet is along intermediate cylinder inner wall spun down, and outer cylinder is in
Between barrel water droplet summarize rotation decline, water body is discharged by lower part underflow opening.Purified oil liquid is formed upwards through guide housing
Inward eddy, from the overflow pipe of inner cylinder be discharged.
Oil-water separator is centrifuged using the density contrast of immiscible liquid, and by the centripetal of eddy flow generation
Pressure difference promotes light phase oil mobile to center, and heavy phase water is mobile to wall side, realizes two-phase laminated flow.From top overflow pipe is discharged oil,
Water is then discharged from underflow pipe, so that cyclonic separation, oil-water separator make by the design of special structure with realizing oil and water
Up to 90% or more, which uses overflow port oil dehydrating rate in petroleum and petrochemical industry, has high-efficient, water separation capability
By force, go out oil quality to stablize, automatic continuous operation, oil extraction draining automation is transported in long-term unattended situation without backwash
Row is reliable.
The invention has the beneficial effects that: this method is used in conjunction by equipment, is matched in conjunction with reasonable residence time, can be with
, total amount larger for change of properties changes greatly, water content is floated, and biggish sump oil is handled, and the processing time greatly shortens,
And water-oil separating is complete, can reduce the discharge of pollutant, solves environmental issue.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention
Wherein:
1 surge tank, 2 feed pump A, 3 whizzer
4 transfers control 5 feed pump B of fuel tank, 6 oil-water separator
7 transfers control 8 discharging pump of water tank
Sump oil after the pretreated sump oil c water-oil separating of the aqueous sump oil b of a
D impurity/sewage
Specific embodiment
Embodiment 1
A kind of aqueous sump oil processing method of superelevation, the specific steps are as follows:
(1) aqueous sump oil a send to after standing 30 minutes in surge tank 1 by feed pump A2 be pumped in whizzer 3 into
Row pretreatment；
(2) pretreated sump oil b entered the transfer control standing of fuel tank 4 after 15 minutes, was sent by feed pump B5 to eddy flow oil
Further implement water-oil separating in separator 6；
(3) the sump oil c after water-oil separating goes to oily recycle bin, isolates after the sewage and the pretreatment of aqueous sump oil after separation
Impurity/sewage the d come then goes to transfer control water tank 7, is sent by discharging pump 8 to Sewage Disposal and is further processed.
Water content is 65% in the aqueous sump oil of superelevation.
Residence time of the aqueous sump oil in whizzer 3 is 20 minutes.
Residence time of the aqueous sump oil in oil-water separator 6 is 30 minutes.
Same oil sample, existing processing technique lean on gravitational settling, settle tank volume ten thousand stere or more, sink in settling tank
The drop time is longer, and the water in sump oil passes through static separation for a long time, it usually needs place 10 days or more.And after final process, on
Water content can reach < 3% in layer oil reservoir, but middle lower layer's Water in oil amount would generally be exceeded, i.e., gravitational settling settles tank body
Product is big, and the residence time is long, and recycling Water in oil can not be completely qualified.
Through the method for the present invention treated sump oil, aqueous stabilization≤3% of sump oil after processing generally can reach 2% hereinafter, place
Oil after reason can direct freshening, and complete equipment occupied area is small, and the residence time is short, it is only necessary to 1-2 hours.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (4)
1. a kind of aqueous sump oil processing method of superelevation, specific step is as follows for the method:
(1) the aqueous sump oil that water content is 30-70% is sent to standing t minutes in surge tank, is pumped to centrifuge separation by feed pump
It is pre-processed in device；
(2) pretreated sump oil enters transfer control fuel tank standing 1/2t minutes, is pumped to oil-water separator by charging
In further implement water-oil separating；
(3) sump oil after water-oil separating goes to oily recycle bin, separates after aqueous sump oil pretreatment in the sewage and step 1 after separation
Impurity/sewage out goes to transfer control water tank, is pumped to Sewage Disposal by discharging and is further processed.
2. the aqueous sump oil processing method of a kind of superelevation described in claim 1, it is characterised in that: the aqueous sump oil is in centrifugation point
It is 1/3t-2/3t minutes from the residence time in device, residence time of the aqueous sump oil in oil-water separator is 2/
3t-t minutes.
3. the aqueous sump oil processing method of a kind of superelevation of any of claims 1 or 2, it is characterised in that: preferably, t 30min-
60min。
4. the aqueous sump oil processing method of a kind of superelevation as claimed in claim 3, it is characterised in that: it is further preferred that t is
30min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442465.7A CN109276914A (en) | 2018-11-29 | 2018-11-29 | A kind of aqueous sump oil processing method of superelevation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442465.7A CN109276914A (en) | 2018-11-29 | 2018-11-29 | A kind of aqueous sump oil processing method of superelevation |
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| CN109276914A true CN109276914A (en) | 2019-01-29 |
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| CN201811442465.7A Pending CN109276914A (en) | 2018-11-29 | 2018-11-29 | A kind of aqueous sump oil processing method of superelevation |
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Citations (7)
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| CN1740261A (en) * | 2005-09-07 | 2006-03-01 | 南京工业大学 | Dirty oil dewatering process for refinery and oil field |
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| US20170158530A1 (en) * | 2013-12-17 | 2017-06-08 | Tyson Foods, Inc. | Recovering chrome from a tannery process |
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2018
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| CN1740261A (en) * | 2005-09-07 | 2006-03-01 | 南京工业大学 | Dirty oil dewatering process for refinery and oil field |
| CN100506941C (en) * | 2005-09-07 | 2009-07-01 | 南京工业大学 | Dirty oil dewatering process for refinery and oil field |
| CN103011474A (en) * | 2012-12-18 | 2013-04-03 | 中国石油天然气股份有限公司 | Oilfield poly-surfactant flooding sewage treatment process |
| US20170158530A1 (en) * | 2013-12-17 | 2017-06-08 | Tyson Foods, Inc. | Recovering chrome from a tannery process |
| CN204151169U (en) * | 2014-10-27 | 2015-02-11 | 中国石油化工股份有限公司 | A kind of fracturing outlet liquid recycling and processing equipment |
| CN105314796A (en) * | 2015-11-16 | 2016-02-10 | 克拉玛依市弘峰科技有限公司 | Oil field high-salinity and oil-bearing wastewater treatment technology |
| CN106915849A (en) * | 2017-04-22 | 2017-07-04 | 中国石油大学(华东) | A kind of acidification of oil field fracturing fluid oily-water seperating equipment and technique |
| CN206940802U (en) * | 2017-05-13 | 2018-01-30 | 武汉轻工大学 | A kind of aqueous heavy dirty oil continuous dehydration freshening and wastewater reusing device |
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| 刘树亮等: ""高含水原油旋流预脱水及污水除油试验与研究"", 《石油机械》 * |
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Application publication date: 20190129 |