CN104787993B - Oil sludge sand three-phase separation treatment method - Google Patents
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- 239000004576 sand Substances 0.000 title claims abstract description 118
- 239000010802 sludge Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 238000005191 phase separation Methods 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 169
- 238000005119 centrifugation Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005336 cracking Methods 0.000 claims abstract description 7
- 239000000295 fuel oil Substances 0.000 claims abstract description 6
- 208000035126 Facies Diseases 0.000 claims description 28
- 239000008346 aqueous phase Substances 0.000 claims description 23
- 239000012071 phase Substances 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 17
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 13
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 13
- 238000003672 processing method Methods 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
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- 238000000605 extraction Methods 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 description 14
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- 239000010779 crude oil Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
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- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 241000283080 Proboscidea <mammal> Species 0.000 description 1
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Abstract
The invention relates to an oil sludge sand three-phase separation treatment method. The method includes: 1) conducting temperature adjustment on oil sludge sand; 2) performing chemical modulation; 3) conducting mechanical centrifugation on the oil sludge sand subjected to chemical modulation; 4) after centrifugation, discharging the preliminarily separated sand phase, water phase and oil phase out of a centrifugation cylinder respectively; and 5) further conducting high temperature pyrolysis treatment on the preliminarily separated sand phase containing a small amount of oil, in a 500DEG C-600DEG C high temperature anaerobic environment, converting the light oil in the sand phase into steam, cracking heavy oil into light oil or methane gas and conducting recycling until the oil content of the sand phase is less than or equal to 2 per thousand. The invention adopts chemical conditioning-mechanical centrifugation method and high temperature pyrolysis method to treat oily sludge in oil field, and provides a set of harmless and resource treatment scheme for oil field pollutant treatment, thus being of great significance for ecological environment protection and sustainable development of the petroleum industry.
Description
Technical field
The present invention relates to a kind of oil sludge and sand three phase separation processing method, belong to the technical field processing oily sludge.
Background technology
The process of Sludge in Oilfields is still at home and abroad the environment difficulties do not captured.Especially in China, containing greasy dirt
The generation of mud is far longer than Oilfields, and each elephant of China and scientific workers also fail to propose effective solution
Certainly method, this undoubtedly gives the oil exploitation industry back of China one millstone around one's neck.The current and following a period of time
The process of oily sludge can be all a focus receiving much concern in Solid Waste Treatment, current China disposal of oily sludge with comprehensive
Close using also larger gap compared with Foreign Advanced Lerel, treatment technology falls behind, and device does not match, most oily sludges without
Harmless treatment, causes environmental pollution and the wasting of resources.From the point of view of the state of the art of comprehensive utilization, lack high-tech, Gao Shui
Flat advanced treating utilizes technology；In the long term, waste oil recovery, comprehensive utilization mud are to realize innoxious and resource
Effective way.As developing country maximum in the world, working condition and its environmental protection technology are relatively backward for China, with
The development of global economy, oil field is produced brought environmental pollution and all increased with mouth, and contradiction is more and more prominent.
Oily sludge solid volume is huge, if not in addition treatment and comprehensive utilization and directly discharge, not only take a large amount of soils,
And surrounding air, water body all can be polluted, and it is also a kind of waste to its sump oil containing.
Oil-containing greasy filth be actually not universal mud, itself complicated, containing a large amount of aged crude oil, colloid,
Wax, salt, bacterium, sour gas, corrosion product etc..Sewage disposal process has also added a large amount of flocculating agents, antisludging agent,
The water treatment agents such as bactericide, corrosion inhibiter, therefore, under conditions of different sewage qualities, handling process and medicament add, contain
The physical property of greasy dirt and discharge rate differ greatly.Meanwhile, oily sludge is made up of substantial amounts of suspension flco, adsorbed crude oil and
Other mechanical admixtures, become the very high colloidal material of moisture content, and due to chemical treatment medicines different in waste water processes
So that the bridge crosslinking structure between each pollutant and inorganic solid content is firm, fully emulsified in greasy filth, its knot is constituted for the use of agent
Divide and more complicate.Oily sludge also becomes one of difficult problem of impact oil field and surrounding enviroment quality.
The various treatment technologies of Sludge in Oilfields oneself cause highest attention both domestic and external.For realizing the thorough of oily sludge
Process and the utilization of resources, carried out numerous studies both at home and abroad and obtained certain progress.The main treatment technology of oily sludge has: adjusts
Matter-mechanically decoupled, curing process, biological treatment, burning, landfill and mummification, profile control, oil recovery, production building materials, pyrogenic process produce
Absorbent or for rubber etc..Landfill and drying and other treatment be also easy to produce secondary pollution and waste a large amount of useful resources and
Gradually it is eliminated, more valued at present is quenched-mechanical dehydration, biological treatment, curing process and comprehensive utilization technique etc..Grind
The person of studying carefully initially once utilizes the calorific value of greasy filth Crude Oil, greasy filth is blended with other materials, makes industrial shaping coal, but due to product ash
Part high, calorific value is low, post-combustion pollution environment the shortcomings of, practical application is less.For ground sludge and tank bottom mud, application at present
Technique mostly is cleaning, substantially with reference to external routine techniques route, after adding moisture chaotropic in greasy filth, by heating
Crude oil is stripped.The crude oil that this technology was once used for the thin oil mud for the purpose of reclaiming crude oil separates.
But the restriction due to various factors, industrial applicability very little, and substantially do not consider environmental index.So, right
The Processing Technology Research of oily sludge, abroad on the basis of correlative study achievement, in conjunction with China's actual conditions, should develop oily sludge
Handling process and technology.Simultaneously as each side condition of China is all greatly limited.Through spy in recent years
Rope, research and introduction digestion make the contained Mud Treatment Technology of China have corresponding development, are reducing oily sludge to environment
Impact aspect has played certain effect.In fact, Oilfields have carried out the research of oil-sludge treatment technology very early, China is also
Carry out contained Mud Treatment Technology, active protection oilfield environment in each oil field.Due to each oil field sludge species and oilfield environment
Difference, the measure of the process mud that each oil field is taken at present is also not quite similar.However, domestic other several elephants have all existed
Step is later, lack mass efficient processes the various problems such as the method for oily sludge.Although, each oil field of recent year is containing greasy dirt
Have developed rapidly on mud treatment technology, however, due to the immature of various new technologies and limitation, the process of oily sludge is still
The difficult problem in domestic each oil field.
Pluses and minuses to various processing methods and application present situation are compared, such as table 1-1:
Table 1-1
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of oil sludge and sand three phase separation processing method.Described technique adopts
Chemical conditioning-mechanical centrifugal method processes Sludge in Oilfields with high-temperature cracking method, processes offer for Oil Field Pollutants a set of harmless
Change, recycling treatment scheme, this has great importance for petroleum industry ecological environmental protection and sustainable development.
Technical program of the present invention lies in:
A kind of oil sludge and sand three phase separation processing method, comprises the following steps that
The component content of wherein said oil sludge and sand is:
Oil content is 15-20%；
Moisture content about 60-75%；
Sand factor is 10%-20%；
1) described oil sludge and sand is carried out with temperature adjustment:
Oil sludge and sand is stirred, is heated to 60 80 DEG C；The purpose that this is processed is that its mobility of enhancing, reduces it and glues
Degree, is conducive to the separation of oil, water, sand during later stage three phase centrifugation；
2) chemistry modulation:
Continue oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and polymerization into the oil sludge and sand after heating simultaneously
Aluminium chloride, the addition of described bodied ferric sulfate is: adds 25-35l in oil sludge and sand per ton；The addition of described aluminium polychloride
Measure and be: add 20-30l in oil sludge and sand per ton；
The present invention adopts inorganic chemical reagent, and bodied ferric sulfate and aluminium polychloride are respectively provided with the effect of breakdown of emulsion and flocculation,
With the use of better；This step must be stirred continuously to oil sludge and sand, to ensure all materials while increasing medicine
All it is uniformly distributed with medicament, mix；Because oily sludge has high-hydrophilic, the knot of water and sewage sludge solid particle in mud
It is very strong for making a concerted effort, and without process in advance, is pre-processed by chemistry, physics or heating method,
Then the dehydration of most of mud, de-oiling are extremely difficult, and it is quenched that the pretreated process of this mud is referred to as mud.Logical
Cross quenched to mud, to change physico-chemical property and the component of mud particle surface, destroy the colloform texture of mud, reduce and water
Affinity, thus improving dehydration oil separated rate.Because oily sludge particle surface adsorbs like charges, repel each other,
In addition fully emulsified it is extremely difficult to de- steady so that oil, water, body refuse are separately relatively difficult；
3) oil sludge and sand after chemistry modulation is carried out with mechanical centrifugal:
Mechanical centrifugal is carried out using concentrator bowl to oil sludge and sand, the length of described concentrator bowl is 2100-2500mm, described centrifugation
The diameter 460-520mm of cylinder, the speed that relatively rotates of its centrifugation is 3000-4000r/min；
4) after centrifugation, described oil sludge and sand is initially separated into sand facies, aqueous phase and oil phase by centrifugation, and above-mentioned three-phase is arranged respectively
Go out concentrator bowl；
5) contain oil on a small quantity in the sand facies of initial gross separation, continue to adopt Pintsch process to process described sand facies: 500
Under DEG C -600 DEG C of high temperature anoxybiotic environment, the light oil in sand facies is converted to steam, heavy oil cracking is light oil or methane
Gas is recycled；Until by the oil content in sand facies≤2 ‰；
Contain oil on a small quantity in the aqueous phase of initial gross separation, by existing air-floating apparatus, aqueous phase is processed so as to contained
Oil float up to the top layer of aqueous phase, then utilize multi_layer extraction to separate water oil, by separated go out water continue to guide into nearby
Sewage treatment plant is processed；
The oil phase of initial gross separation is drawn and stores.
Present invention has an advantage that
1st, the present invention sequentially carries out temperature adjustment, quenched, stirring flow process to oil sludge and sand, is that oil sludge and sand three-phase mechanical separates and carries out and fill
The preparation of foot.The accurate proportioning of the present invention is conducive to efficiently separating of oil sludge and sand three-phase.
2nd, the separation of oil in oil sludge and sand can directly be recycled by the present invention, turns waste into wealth.
3rd, the method for the invention is applied widely, is particularly well-suited to the operating mode that light, heavy-fluid phase are had high demands.
Specific embodiment
With reference to embodiment, the present invention is described in detail, but not limited to this.
Embodiment 1,
8-9 month in 2014 extends oil extraction in oil field scene according to oil sludge and sand three-phase of the present invention in Shaanxi Province's Yan'an
Method for separating and processing carries out three phase separation field test to oil sludge and sand, and taken oil sludge and sand is oil-containing during the clear tank of well-digging team water-injection station
Mud, its oil content is 15%, and moisture content is 65%, and sand factor is 20%.
A kind of oil sludge and sand three phase separation processing method, comprises the following steps that
1) described oil sludge and sand is carried out with temperature adjustment:
Oil sludge and sand is stirred, is heated to 60 DEG C；
2) chemistry modulation:
Continue oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and polymerization into the oil sludge and sand after heating simultaneously
Aluminium chloride, the addition of described bodied ferric sulfate is: adds 30l in oil sludge and sand per ton；The addition of described aluminium polychloride
For: add 20l in oil sludge and sand per ton；
3) oil sludge and sand after chemistry modulation is carried out with mechanical centrifugal:
Mechanical centrifugal is carried out using concentrator bowl to oil sludge and sand, the length of described concentrator bowl is 2100-2500mm, described centrifugation
The diameter 460-520mm of cylinder, the speed that relatively rotates of its centrifugation is 3000-4000r/min；
4) after centrifugation, described oil sludge and sand is initially separated into sand facies, aqueous phase and oil phase by centrifugation, and above-mentioned three-phase is arranged respectively
Go out concentrator bowl；
5) contain oil on a small quantity in the sand facies of initial gross separation, continue to adopt Pintsch process to process described sand facies: 500
Under DEG C -600 DEG C of high temperature anoxybiotic environment, the light oil in sand facies is converted to steam, heavy oil cracking is light oil or methane
Gas is recycled；Until by the oil content in sand facies≤2 ‰；
Contain oil on a small quantity in the aqueous phase of initial gross separation, by existing air-floating apparatus, aqueous phase is processed so as to contained
Oil float up to the top layer of aqueous phase, then utilize multi_layer extraction to separate water oil, by separated go out water continue to guide into nearby
Sewage treatment plant is processed；
The oil phase of initial gross separation is drawn and stores.
Oil sludge and sand after processing through the present embodiment 1, in the oil phase after its three phase separation, aqueous and other impurities < 8%, reach
The standard of local oil plant oil recovery；Oil content < 1% in aqueous phase；Oil content≤2 ‰ in sand facies.
Embodiment 2,
A kind of oil sludge and sand three phase separation processing method as described in Example 1, its difference is, the containing of described oil sludge and sand
Oil cut rate is 20%, and moisture content is 70%, and sand factor is 10%；
1) described oil sludge and sand is carried out with temperature adjustment:
Oil sludge and sand is stirred, is heated to 80 DEG C；
2) chemistry modulation:
Continue oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and polymerization into the oil sludge and sand after heating simultaneously
Aluminium chloride, the addition of described bodied ferric sulfate is: adds 32l in oil sludge and sand per ton；The addition of described aluminium polychloride
For: add 30l in oil sludge and sand per ton；
3) oil sludge and sand after chemistry modulation is carried out with mechanical centrifugal:
Mechanical centrifugal is carried out using concentrator bowl to oil sludge and sand, the length of described concentrator bowl is 2100-2500mm, described centrifugation
The diameter 460-520mm of cylinder, the speed that relatively rotates of its centrifugation is 3000-4000r/min；
4) after centrifugation, described oil sludge and sand is initially separated into sand facies, aqueous phase and oil phase by centrifugation, and above-mentioned three-phase is arranged respectively
Go out concentrator bowl；
5) contain oil on a small quantity in the sand facies of initial gross separation, continue to adopt Pintsch process to process described sand facies: 500
Under DEG C -600 DEG C of high temperature anoxybiotic environment, the light oil in sand facies is converted to steam, heavy oil cracking is light oil or methane
Gas is recycled；Until by the oil content in sand facies≤2 ‰；
Contain oil on a small quantity in the aqueous phase of initial gross separation, by existing air-floating apparatus, aqueous phase is processed so as to contained
Oil float up to the top layer of aqueous phase, then utilize multi_layer extraction to separate water oil, by separated go out water continue to guide into nearby
Sewage treatment plant is processed；
The oil phase of initial gross separation is drawn and stores.
Oil sludge and sand after processing through the present embodiment 2, in the oil phase after its three phase separation, aqueous and other impurities < 8%, reach
The standard of local oil plant oil recovery；Oil content < 1% in aqueous phase；Oil content≤2 ‰ in sand facies.
Embodiment 3,
A kind of oil sludge and sand three phase separation processing method as described in Example 1, its difference is, the containing of described oil sludge and sand
Oil cut rate is 18%, and moisture content is 65%, and sand factor is 17%；
1) described oil sludge and sand is carried out with temperature adjustment:
Oil sludge and sand is stirred, is heated to 70 DEG C；
2) chemistry modulation:
Continue oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and polymerization into the oil sludge and sand after heating simultaneously
Aluminium chloride, the addition of described bodied ferric sulfate is: adds 35l in oil sludge and sand per ton；The addition of described aluminium polychloride
For: add 22l in oil sludge and sand per ton；
3) oil sludge and sand after chemistry modulation is carried out with mechanical centrifugal:
Mechanical centrifugal is carried out using concentrator bowl to oil sludge and sand, the length of described concentrator bowl is 2100-2500mm, described centrifugation
The diameter 460-520mm of cylinder, the speed that relatively rotates of its centrifugation is 3000-4000r/min；
4) after centrifugation, described oil sludge and sand is initially separated into sand facies, aqueous phase and oil phase by centrifugation, and above-mentioned three-phase is arranged respectively
Go out concentrator bowl；
5) contain oil on a small quantity in the sand facies of initial gross separation, continue to adopt Pintsch process to process described sand facies: 500
Under DEG C -600 DEG C of high temperature anoxybiotic environment, the light oil in sand facies is converted to steam, heavy oil cracking is light oil or methane
Gas is recycled；Until by the oil content in sand facies≤2 ‰；
Contain oil on a small quantity in the aqueous phase of initial gross separation, by existing air-floating apparatus, aqueous phase is processed so as to contained
Oil float up to the top layer of aqueous phase, then utilize multi_layer extraction to separate water oil, by separated go out water continue to guide into nearby
Sewage treatment plant is processed；
The oil phase of initial gross separation is drawn and stores.
Oil sludge and sand after processing through the present embodiment 3, in the oil phase after its three phase separation, aqueous and other impurities < 7%, reach
The standard of local oil plant oil recovery；Oil content < 1% in aqueous phase；Oil content≤2 ‰ in sand facies.
Claims (3)
1. a kind of oil sludge and sand three phase separation processing method is it is characterised in that the method comprising the steps of is as follows:
The component content of wherein said oil sludge and sand is:
Oil content is 15-20%；
Moisture content is 60-75%；
Sand factor is 10%-20%；
1) described oil sludge and sand is carried out with temperature adjustment:
Oil sludge and sand is stirred, is heated to 60 80 DEG C；
2) chemistry modulation:
Continue oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and polyaluminium into the oil sludge and sand after heating simultaneously
Aluminium, the addition of described bodied ferric sulfate is: adds 25-35l in oil sludge and sand per ton；The addition of described aluminium polychloride
For: add 20-30l in oil sludge and sand per ton；
3) oil sludge and sand after chemistry modulation is carried out with mechanical centrifugal:
Mechanical centrifugal is carried out using concentrator bowl to oil sludge and sand, the length of described concentrator bowl is 2100-2500mm, described concentrator bowl
Diameter 460-520mm, the speed that relatively rotates of its centrifugation is 3000-4000r/min；
4) through centrifugation after, described oil sludge and sand is initially separated into sand facies, aqueous phase and oil phase by centrifugation, above-mentioned three-phase be discharged respectively from
Heart cylinder；
5) contain oil on a small quantity in the sand facies of initial gross separation, continue to adopt Pintsch process to process described sand facies: at 500 DEG C -600
DEG C high temperature anoxybiotic environment under the light oil in sand facies is converted to steam, by heavy oil cracking be light oil or methane gas are carried out
Recycle；Until by the oil content in sand facies≤2 ‰；
Contain oil on a small quantity in the aqueous phase of initial gross separation, by existing air-floating apparatus, aqueous phase is processed with the oil so as to contained
Float up to the top layer of aqueous phase, then utilize multi_layer extraction by water oil separate, by separated go out water continue to guide sewage nearby into
Treatment plant is processed；
The oil phase of initial gross separation is drawn and stores.
2. a kind of oil sludge and sand three phase separation processing method according to claim 1 is it is characterised in that described step 1) in right
Described oil sludge and sand carries out temperature adjustment: oil sludge and sand is stirred, is heated to 70 80 DEG C.
3. a kind of oil sludge and sand three phase separation processing method according to claim 1 is it is characterised in that described step 2) relaying
Continue and oil sludge and sand is stirred, and sequentially add bodied ferric sulfate and aluminium polychloride, institute into the oil sludge and sand after heating simultaneously
The addition stating bodied ferric sulfate is: adds 30l in oil sludge and sand per ton；The addition of described aluminium polychloride is: to per ton
20l is added in oil sludge and sand.
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| CN107188342A (en) * | 2017-07-25 | 2017-09-22 | 云南大地绿坤环保科技有限公司 | A kind of method of petrochemical industry greasy filth water mixed liquid quick separating |
| CN107381986A (en) * | 2017-08-08 | 2017-11-24 | 湖南云平环保科技有限公司 | The purifying treatment method of oily sludge |
| CN108435726A (en) * | 2018-03-30 | 2018-08-24 | 北京生态岛科技有限责任公司 | A kind of cleaning method and system of mercurous oil sump |
| CN109095743A (en) * | 2018-08-24 | 2018-12-28 | 郑州高路亚环保科技有限公司 | The overcritical organic stripping system of one kind and its technique |
| CN110922015B (en) * | 2019-12-17 | 2022-04-22 | 西安华盛坤泰能源环保科技有限公司 | Harmless treatment method and system for fluid oily sludge |
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| CN100391877C (en) * | 2006-07-03 | 2008-06-04 | 濮阳市天地人环保工程技术有限公司 | Oil field sludge resource treating process |
| JP5951986B2 (en) * | 2011-12-27 | 2016-07-13 | 日鉄住金環境株式会社 | Biological treatment method of organic wastewater |
| CN102627381B (en) * | 2012-04-26 | 2013-10-09 | 陕西科技大学 | Two-step method resource treatment process for sludge containing oil |
| CN103342444B (en) * | 2013-07-15 | 2015-10-14 | 北京纬纶华业环保科技股份有限公司 | A kind of greasy filth recycling treatment process and system |
| CN203715462U (en) * | 2013-10-29 | 2014-07-16 | 大连环资科技有限公司 | Complete equipment for oily sludge resourceful treatment |
| CN103553290B (en) * | 2013-10-29 | 2015-05-20 | 大连环资科技有限公司 | Resourceful treatment method and apparatus for oil-containing sludge |
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