CN108409077A - Oily sludge materialization coupled processing method - Google Patents
Oily sludge materialization coupled processing method Download PDFInfo
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- CN108409077A CN108409077A CN201810286640.1A CN201810286640A CN108409077A CN 108409077 A CN108409077 A CN 108409077A CN 201810286640 A CN201810286640 A CN 201810286640A CN 108409077 A CN108409077 A CN 108409077A
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- oily sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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Abstract
This application provides a kind of oily sludge materialization coupled processing methods comprising step：Oily sludge is delivered in cleaning device, being subsequently added into water, demulsifier, bleeding agent, surfactant and stirring makes its reaction, makes oil, water, silt particle three phase separation through sedimentation process after reaction；The silt particle isolated is subjected to centrifugal dehydration, the fixed renovation agent of absorption is then added, maintenance a period of time is stood after being thoroughly mixed uniformly, finally obtains oil content in 2% oily sludge below.The processing method of the application is simple for process, the oil content of oily sludge is reduced to 2% or less and has certain mechanical strength after processing, reaches the standard that can be backfilled, will not cause secondary pollution, negative influence will not be caused to environment without side reaction product generation is harmful in processing procedure simultaneously.
Description
Technical field
This application involves field of oilfield chemistry more particularly to a kind of oily sludge materialization coupled processing methods.
Background technology
In recent years, with the development of petroleum industry, in oil-gas field development and exploitation, oil-gas gathering and transportation, sewage from oil refinery processing
Process produces a large amount of oily sludge.Oily sludge is a kind of solid waste rich in mineral oil and composition complexity, main
It is mixed by clay particle, organic matter, flco, microorganism and its metabolite, minerals etc., the big, oil-containing with yield
The features such as rate is high, mink cell focus constituent content is high, comprehensive utilization mode is few, intractability is big.Oil field development and each treatment process mistake
Different types of chemical treatments are also largely used in journey so that in oily sludge between each pollutant and inorganic solid content
Bridge crosslinking structure it is firm, oil, water emulsification are abundant, and constituent structure more complicates, and objectively increases process difficulty.Contain
Greasy dirt is bulky, if not being pocessed direct emission, not only occupies a large amount of arable lands, and to surrounding soil, water body, air
It will all pollute.According to《National Hazard waste register》The regulation of (2016 editions), oil field sludge belong to hazardous waste.While with
It《Law of Environmental Protection of the People's Republic of China》With《Soil Pollution Control action plan》Appearance, by oil field sludge minimizing,
Recycling, harmless treatment are the problem of promoting clean manufacturing and recycling economy development that must face.
For oily sludge oil removing, mainly there are Thermal desorption, materialization extraction and separation, medicament oxidative degradation, microorganism drop at present
The technologies such as solution is repaired, cement kiln is disposed.Wherein, oily sludge is heated in stove higher by Thermal desorption technology using all kinds of heat sources
Temperature (300 DEG C or more), the crude oil class component in oily sludge is decomposed, then carry out separation of solid and liquid recycling, the technology energy
Consumption is higher, generally requires moisture control to reduced levels to reduce energy consumption, and be suitable for 10% or more oil content contains greasy dirt
Mud, and there are exhaust gas discharge and the problems such as high energy consumption；Materialization extraction and separation technology is to choose suitable organic solvent by oil-containing
The components such as crude oil, oil emulsion in sludge are cleaned, are detached, the final oily sludge for obtaining oil content and meeting the requirements of the standard,
Desiccation is carried out again, reduces the danger and environmental contamination of oily sludge, the technology is convenient for recycling crude oil, comprehensive utilization；Medicament
Oxidative degradation technology with medicament by be sufficiently mixed contacting oily sludge, using the strong oxidizing property and associativity of medicament,
Crude oil class component in oily sludge is obtained fully degraded, is suitable for by degrading crude oil class component by the reaction of certain time
Oil content is less than 5% oily sludge, requires powder performance high；Microbial degradation recovery technique utilizes microorganism and its breeding
Degrading crude oil class component is acted on, to reduce the pollution of oily sludge, which applies in general to the lower oil-containing of oil content
Sludge, and processing time is longer, disposal field requirement is larger, is suitble to repair for a long time, reaches thoroughly innoxious；Utilize cement kiln
To oily sludge be disposed with disposition thoroughly, easily realize innoxious and recycling advantage, but to reduce to manufacture of cement
The influence of system needs the oil content of oily sludge being reduced to 3 ‰ and less.
The ability of above-mentioned prior art processing oily sludge is limited, it is difficult to meet the quick processing of high-volume oily sludge
Demand.In addition above-mentioned technology mainly there is problems：
1. high energy consumption：Silt particle in oily sludge is very strong to the adsorption capacity of crude oil class component, therefore by oily sludge
In greasy filth be kept completely separate, must carry out under the high temperature conditions, such as oily sludge is heated and washed with a large amount of steams, hot water
Deng keeping energy consumption very high.
2. easily causing secondary pollution：Show three aspects：(a) oil separation is not thorough in oily sludge, although oily sludge
Oil content declines, but the purpose of greasy filth separation is not fully achieved, and the oily sludge after separation still can cause environmental pollution；
(b) atmosphere pollution can be caused by such as making fuel as the utilization of resources；(c) chemical agent of oil separation may also be right in oily sludge
Environment is impacted and is endangered.
3. resource recovery is low：As oily sludge, oil content average out to 10%~22%, or even some are up to 20%
~30%, the crude oil class component in oily sludge is recycled, its recycling is made, can get certain economic benefit, environment
Benefit and social benefit, but technically there are no the methods for developing suitable, high-recovery at present.
4. comprehensive utilization degree is low：Oily sludge is detached and can not be fully achieved with physics, chemical method merely
Environmental requirement, processing product cannot be comprehensively utilized well.
In consideration of it, special propose the application.
Invention content
The problem of in view of background technology, the application's is designed to provide a kind of oily sludge materialization coupling processing
Method, the processing method is simple for process, and the oil content of oily sludge is reduced to 2% or less and with certain mechanical strong after processing
Degree, reaches the standard that can be backfilled, and will not cause secondary pollution, while being generated without harmful side reaction product in processing procedure, right
Environment will not cause negative influence.
In order to achieve the above object, this application provides a kind of oily sludge materialization coupled processing methods comprising step：
Oily sludge is delivered in cleaning device, being subsequently added into water, demulsifier, bleeding agent, surfactant and stirring makes its reaction,
Make oil, water, silt particle three phase separation through sedimentation process after reaction；The silt particle isolated is subjected to centrifugal dehydration, is then added
The fixed renovation agent of absorption stands maintenance a period of time after being thoroughly mixed uniformly, finally obtain oil content and below contain 2%
Greasy dirt.
Compared with the existing technology, the application has the beneficial effect that：
The oily sludge materialization coupled processing method of the application can be solid in demulsifier, bleeding agent, surfactant and absorption
Determine to give full play to the advantage that each medicament has complementary functions under the synergistic effect of renovation agent, is improved using demulsifier, bleeding agent and contain greasy dirt
The dispersibility and separation property of mud are repaired using surfactant by the oil separation in oily sludge to liquid phase using absorption is fixed
The components such as crude oil and polymer in agent oxidative degradation oily sludge, and catabolite is directly adsorbed and is wrapped, make place
The oil content of oily sludge after reason is reduced to 2% or less and has certain mechanical strength, meets SY/T 7301-2016《It is land
Oil and gas exploitation oily sludge comprehensive utilization of resources and pollution control technology requirement》, reach the standard that can be backfilled, no
It can cause secondary pollution.
The oily sludge materialization coupled processing method of the application is simple for process, is given birth to without harmful side reaction product in processing procedure
At not will produce negative influence to environment.
The oily sludge materialization coupled processing method of the application also has the characteristics that low energy consumption without hot environment processing.
Description of the drawings
Fig. 1 is the oily sludge materialization coupled processing method continuous processing Gudao area of Shengli Oilfield West sewage using the application
Oil content detection curve of the oily sludge that pond is dug out in not same date.
Specific implementation mode
The following detailed description of the oily sludge materialization coupled processing method according to the application.
Include step according to the oily sludge materialization coupled processing method of the application：Oily sludge is delivered to cleaning by S1
In device, being subsequently added into water, demulsifier, bleeding agent, surfactant and stirring makes its reaction, after reaction through sedimentation process
Make oil, water, silt particle three phase separation；S2, centrifugal dehydration is carried out by the silt particle isolated, and the fixed renovation agent of absorption is then added, fills
Divide after being uniformly mixed and stand maintenance a period of time, finally obtains oil content in 2% oily sludge below.
According in oily sludge materialization coupled processing method described herein, in step S1, demulsifier and bleeding agent
Polymer in oily sludge can be destroyed to act on the stable emulsion of shale, the strong adsorptivity and emulsification to eliminate shale are made
With improving the dispersibility and separation property of oily sludge；Surfactant can then break polymer and wrap up the emulsification of shale, drop
The interfacial tension of low liquid-liquid phase and solid-liquid phase keeps the oil-water interface of oily sludge, silt particle-water termination clear and legible, is sent into and divides
From through sedimentation process, oil, water, silt particle in oily sludge detach, the oil-containing of oily sludge after the completion of step S1 after device
Rate can reduce by 60%~70%.
According in oily sludge materialization coupled processing method described herein, in step S2, fixed renovation agent is adsorbed
It can be with the change of a small amount of water and chemical substance (oil component, polymers compositions etc.) generation complexity in the silt particle after centrifugal dehydration
Reaction is learned, the product with high-specific surface area and rigid-skeleton is formed, by components such as crude oil and polymer in the mistake
Product in journey after oxidative degradation is directly wrapped in rigid-skeleton, is achieved the purpose that absorption is fixed and is repaired.It adsorbs simultaneously
Fixed renovation agent can also connect silt particle particle, and tiny silt particle particle agglomeration is made to be formed with certain mechanical strength
Spherical substance.The oil content of oily sludge can be down to 2% or less and have certain mechanical strength after the completion of step S2, meet SY/T
7301-2016《Land oil natural gas extraction oily sludge comprehensive utilization of resources and pollution control technology requirement》, reaching can
With the standard of backfill, secondary pollution will not be caused.
The oily sludge materialization coupled processing method of the application is simple for process, is given birth to without harmful side reaction product in processing procedure
At not will produce negative influence to environment.
The oily sludge materialization coupled processing method of the application also has the characteristics that low energy consumption without hot environment processing.
It, can be in advance to containing greasy dirt in step S1 according in oily sludge materialization coupled processing method described herein
Mud carries out sieving approach processing, to improve the processing capacity of subsequent step.Wherein, the type of sieving approach device is not specific
Limitation, can be selected according to actual demand, preferably can be ALLU type sieving approach scraper bowls.
According in oily sludge materialization coupled processing method described herein, in step S1, oily sludge be added
Water volume ratio be not more than 1, wherein the purpose that water is added is that oily sludge is made fully to fluidize.
According in oily sludge materialization coupled processing method described herein, in step S1, the demulsifier is selected from
One or both of de-emulsifier SP 169, demulsifier AE8051；The bleeding agent is selected from penetrating agent JFC -5, penetrating agent BX, fast
One or more of fast penetrant t；The surfactant is selected from alkylsulfonate.The specific type of alkylsulfonate does not have
Special limitation, can be selected according to actual demand, preferably can be dodecyl sodium sulfate, neopelex, ten
One or more of six sodium alkyl sulfonates, cetyl benzenesulfonic acid sodium.
According in oily sludge materialization coupled processing method described herein, in step S1, the demulsifier adds
Dosage is the 1%~2% of the quality of the oily sludge, it is preferable that the additive amount of the demulsifier is the oily sludge
The 1.5% of quality.
According in oily sludge materialization coupled processing method described herein, in step S1, the bleeding agent adds
Dosage is the 0.5%~1% of the quality of the oily sludge, it is preferable that the additive amount of the bleeding agent is the oily sludge
Quality 0.5%.
According in oily sludge materialization coupled processing method described herein, in step S1, the surfactant
Additive amount be the oily sludge quality 0.5%~1%, it is preferable that the additive amount of the surfactant is described
The 0.5% of the quality of oily sludge.
According in oily sludge materialization coupled processing method described herein, in step S1, being stirred to react the time is
20min~30min, it is preferable that it is 30min to be stirred to react the time.
According in oily sludge materialization coupled processing method described herein, in step S1, in step S1, stirring is fast
Rate is 150r/min~250r/min.
According in oily sludge materialization coupled processing method described herein, in step S1, in step S1, when sedimentation
Between be not less than 30min.
According in oily sludge materialization coupled processing method described herein, in step S2, the absorption fixation is repaiied
Multiple agent includes one or more of persulfate, ferrous sulfate, calper calcium peroxide, hydrogen peroxide and calcium oxide, cement, water glass
One or more of glass, flyash, montmorillonite, kaolin.Wherein persulfate preferably can be sodium peroxydisulfate, potassium peroxydisulfate,
One or more of persulfuric acid iron, ammonium persulfate.
According in oily sludge materialization coupled processing method described herein, in step S2, the absorption fixation is repaiied
The additive amount of multiple agent is the 5%~12% of the quality of the silt particle after centrifugal dehydration.
According in oily sludge materialization coupled processing method described herein, in step S1, in infall process, in time
The separative efficiency of oil, water, silt particle can be improved in the cleaning upside dregs of fat, while can be contained according to oil in the addition and the upper layer dregs of fat of water
Amount correspondingly increases the wash number of step S1.
According in oily sludge materialization coupled processing method described herein, in step S1, detached through sedimentation process
Obtained oil is recyclable to slop tank, and the water detached through sedimentation process is recyclable to Water Tank, to make the You Heshui isolated
It realizes and recycles after processing.
According in oily sludge materialization coupled processing method described herein, in step S2, the time of maintenance is stood
For 72h~168h.
With reference to embodiment, the application is expanded on further.It should be understood that these embodiments be merely to illustrate the application without
For limiting scope of the present application.
Embodiment 1
Using the oily sludge that Gudao area of Shengli Oilfield West cesspool is dug out as process object, not due to oily sludge sedimentation
Uniformly, oil content is 4%~22%, and moisture content is 30%~60%.
First with ALLU type sieving approach scraper bowls by the abundant crushing and screening of oily sludge, greasy dirt then will be contained with sludge pump
Mud is delivered to cleaning equipment, and the volume ratio for then pressing oily sludge and water is 1:2 are added water, add 1.2% demulsifier
SP169,0.5% penetrating agent JFC -5,0.5% dodecyl sodium sulfate (with oily sludge Mass Calculation), with 200r/
The speed of min is stirred to react 30min, settles 30min after the completion of reaction, keeps oil, water, silt particle interface clear, pass through separation later
Oil is recycled to slop tank by device, and water is recycled to Water Tank recycling, the silt particle isolated carry out after centrifugal dehydration by
The fixed renovation agent of absorption is added in the ratio of 8% (with the oily sludge Mass Calculation after centrifugal dehydration), is thoroughly mixed uniformly
Maintenance 72h is stood afterwards, so that absorption is fixed renovation agent and is come into full contact with oily sludge and is reacted.The fixed renovation agent of absorption is persulfuric acid
Sodium, ferrous sulfate, calcium oxide, cement, diatomaceous mixture.
Fig. 1 is continuous processing Gudao area of Shengli Oilfield West cesspool is dug out in the manner described above oily sludge not on the same day
The oil content detection curve of phase.It will be seen from figure 1 that during continuous processing, the oil content of oily sludge after processing can drop
To 2% hereinafter, meeting SY/T 7301-2016《Land oil natural gas extraction oily sludge comprehensive utilization of resources and pollution control
Technology requirement processed》Regulation, cesspool can be backfilled.
Claims (10)
1. a kind of oily sludge materialization coupled processing method, which is characterized in that including step：
Oily sludge is delivered in cleaning device by S1, and being subsequently added into water, demulsifier, bleeding agent, surfactant and stirring makes
It is reacted, and makes oil, water, silt particle three phase separation through sedimentation process after reaction；
S2, centrifugal dehydration is carried out by the silt particle isolated, and the fixed renovation agent of absorption is then added, quiet after being thoroughly mixed uniformly
Maintenance a period of time is set, finally obtains oil content in 2% oily sludge below.
2. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1, contain greasy dirt
The volume ratio of mud and the water of addition is not more than 1.
3. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1,
The demulsifier is selected from one or both of de-emulsifier SP 169, demulsifier AE8051；
The bleeding agent is selected from one or more of penetrating agent JFC -5, penetrating agent BX, fast penetrant T；
The surfactant is selected from alkylsulfonate.
4. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1,
The additive amount of the demulsifier is the 1%~2% of the quality of the oily sludge；
The additive amount of the bleeding agent is the 0.5%~1% of the quality of the oily sludge；
The additive amount of the surfactant is the 0.5%~1% of the quality of the oily sludge.
5. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1, stirring is anti-
It is 20min~30min between seasonable.
6. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1, stirring speed
Rate is 150r/min~250r/min.
7. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S1, when sedimentation
Between be not less than 30min.
8. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S2, the suction
Attached fixed renovation agent includes：
One or more of persulfate, ferrous sulfate, calper calcium peroxide, hydrogen peroxide；And
One or more of calcium oxide, cement, waterglass, flyash, montmorillonite, kaolin.
9. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S2, the suction
The additive amount of attached fixed renovation agent is the 5%~12% of the quality of the silt particle after centrifugal dehydration.
10. oily sludge materialization coupled processing method according to claim 1, which is characterized in that in step S2, stand and support
The time of shield is 72h~168h.
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ID=63134169
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Cited By (5)
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| CN109675340A (en) * | 2019-03-07 | 2019-04-26 | 黄河三角洲京博化工研究院有限公司 | A kind of de-oiling agent and its application method cleaning waste rolling oil greasy filth |
| CN110342765A (en) * | 2019-06-28 | 2019-10-18 | 陕西欧菲德环保科技有限公司 | A kind of method of petroleum sludge biology base separating treatment |
| CN110776224A (en) * | 2019-11-19 | 2020-02-11 | 大连海事大学 | Treatment method of oil field oil-containing sludge |
| CN113003922A (en) * | 2021-03-04 | 2021-06-22 | 山东科技大学 | Integrated efficient hot washing-advanced oxidation combined oily sludge treatment system and oily sludge treatment method |
| CN113121203A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method for preparing ceramsite from oily sludge |
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| CN113003922A (en) * | 2021-03-04 | 2021-06-22 | 山东科技大学 | Integrated efficient hot washing-advanced oxidation combined oily sludge treatment system and oily sludge treatment method |
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Application publication date: 20180817 |