CN1687561A - Method for deeply treating water extracted out from oil field - Google Patents
Method for deeply treating water extracted out from oil field Download PDFInfo
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- CN1687561A CN1687561A CN 200510039182 CN200510039182A CN1687561A CN 1687561 A CN1687561 A CN 1687561A CN 200510039182 CN200510039182 CN 200510039182 CN 200510039182 A CN200510039182 A CN 200510039182A CN 1687561 A CN1687561 A CN 1687561A
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- oil
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- oil field
- expanded graphite
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 31
- 239000010439 graphite Substances 0.000 claims abstract description 31
- 238000011282 treatment Methods 0.000 claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 11
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims abstract description 3
- 229940010552 ammonium molybdate Drugs 0.000 claims abstract description 3
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 3
- 239000011609 ammonium molybdate Substances 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 3
- 239000000725 suspension Substances 0.000 claims description 34
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 5
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 13
- 208000034699 Vitreous floaters Diseases 0.000 abstract 4
- 229910021581 Cobalt(III) chloride Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 78
- 235000019198 oils Nutrition 0.000 description 78
- 239000002245 particle Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 241000758789 Juglans Species 0.000 description 4
- 235000009496 Juglans regia Nutrition 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 235000020234 walnut Nutrition 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000005447 environmental material Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001007 puffing effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to the waste liquid treatment technology, which firstly implements oil-removing and floater-removing pre-treatments, the oil content <=50mg/L, the floaters <=10mg/L. The pre-treated waste water continuously flows into the adsorbing tower containing expansion graphite through the flowmeter and stay in it for a moment and flow out to arrive the standard of oil content <=10mg/L, and the floaters <=3mg/L. The said expansion graphite is the adjusting agent, such as ammonium molybdate, iron trichloride, cobaltic chloride and etc, the expansion temperature is 700-1000 Deg. C, and the control aperture is 5-50 micron, and the oil absorbing amount is up to 50mg/L. the said graphite is through some time of operation and its oil absorbing amount is falling, then get it out and pass decompressing distil and high-temperature burning for reuse. It realizes the simultaneous oil absorbing and floater removing.
Description
Technical field
The present invention relates to wastewater processing technology, specifically, is a kind of method for deeply treating water extracted out from oil field.
Background technology
At present, the most of oil field of China has entered the mid-term and the later stage of oil development, water content in the extraction oil is 70～80%, the oil field that has even up to 90%, this part sewage not only contains petroleum-type, also contain solid suspension, dispersed oil and oil slick, oil emulsion, and multiple composition such as chemical agent, China oil field extraction every day oil-polluted water 2.5 * 10 caused
6m
3If do not handle direct discharging, not only can cause soil, contaminated water source, sometimes even can cause the sump oil firing accident, threaten the people's life security, cause the economic loss of country, also can endanger the interests in oil field self simultaneously; Otherwise,, and be used for re-injection if oil extraction waste water is handled, then not only can satisfy the growing requirement of oil extraction process water injection rate, also can save water resource simultaneously, reduce environment pollution, bring economic benefit for the oil field, help the sustainable development in oil field.So how cost-effectively a large amount of oil field extracted waters to be carried out re-injection handle, development has great significance to oilfield economic.
Major pollutants are crude oil and suspension in the oil field extracted waste water.In order to reach the requirement of re-injection water quality standard after it is handled, the treatment process of each Oilfield using is divided into three-stage process mostly at present.Be oil removing → remove suspension → advanced treating → water filling, and be aided with antiscale, corrode chemical treatment measures such as sterilization.The former water of oil field extracted water is after de-oiling is handled, generally will be through the suspension in the preliminary treatment removal water of natural subsidence jar and the dispersed oil of part, water outlet adds an amount of coagulant again, and breakdown of emulsion also forms little alumen ustum, enter the secondary settlement jar, remove most oil emulsion and suspension.In the water outlet of this moment content about 30～60mg/L, suspension about 20～40mg/L, the water after handle this moment also has little minute seed oil of part and suspension not to remove, and can not satisfy injectivity index.Therefore recovered water must carry out advanced treating.
At present, oil field extracted water re-injection deep treatment method and technology mainly contain: 1. 2. membrane separation technique of filtering technique.Filtering technique is the key technology of whole oil filed produced water treatment technology, and it occurs so far, has obtained very big progress.The used strainer of oil field extracted water has two kinds of pressure type and gravity.Pressure filter speed is high, applied widely.At present having that generally adopt in China oil field: quartz sand strainer, walnut shell filter, Two-layer filter etc.Gravity filter does not re-use at present substantially owing to weak effect.Especially walnut shell filter, because filtrate oil recovery performance is good, retaining power is big, light weight, the backwash energy consumption is little etc., and advantage is widely used.But because the filtrate granularity is little, backwash is easily run off, and walnut shell filtering material has oil recovery, must adopt cleaning agent during backwash, has increased the processing burden of backwash.Fiber ball filter is the deep filter that China grew up in recent years, its filtrate fiber is fine and closely woven, can form up big and down small ideal during filtration and filter the space distribution, water environment capacity is big, the effect of removing oil and suspension is higher than quartz sand and walnut shell, but in the oil recovery of filtrate, recoil does not wash clean, and influences treatment effect.
Membrane separation technique is to the effective method of oil-polluted water advanced treating, is the focus of Recent study.Membrane separation technique is to utilize the selection permeability of film to separate, and oil and suspension are dammed, and has energy-efficiently, pollutes little characteristics, but it is big also to exist investment, and film pollutes back difficulty cleaning, shortcomings such as operating cost height.
People such as Yang Xu propose method and the isolated plant (ZL01138976.1) that a kind of electricity consumption-heterogeneous catalytic reaction is handled oil field waste, and this technology adopts the catalyzer that contains active constituent to handle oil field waste under current field condition.Appoint people such as Lian Zhen to propose a kind of oil field wastewater treatment method and equipment (ZL02149167.4), this invention can realize that electric floating oil removing and electrolytic sterilizing are integrated.These oil field wastewater treatment methods do not relate to the advanced treating of oil field waste.
The development of adsorption separation technology self has brought beyond thought change for many production technologies, and the new application in oily waste water is in the exploratory stage.The tradition adsorption separation technology is applied in the advanced treating of oily waste water very early, and active carbon commonly used (is generally 30～80mg/g) to oil as adsorbent but its adsorption capacity is limited, and cost height, the regeneration difficulty is sought new and effective oil absorbent, is the focus of at present a lot of scholar's research.Therefore, solving one of greasy dirt dyes in the water key technology is will develop to have to get rid of greasy dirt dye the new material of feature from water.
Expanded graphite gains great popularity as a kind of novel environmental material.Expanded graphite by natural flake graphite through intercalation, washing, drying, high temperature puffing and a kind of loose porous vermiform material that obtains.Because flourishing network-like pass structure, high specific area, high surface-active and nonpolar are arranged, simultaneously in the hole series structure mainly based on big mesopore, therefore, expanded graphite has the good adsorption performance to some nonpolar big molecule organic principle.Expanded graphite has hydrophobic lipophile, can carry out selective absorption in water, to simple oil product, floating on water surface oil product still be in the water oil of low content emulsified state fabulous absorption property is all arranged, especially heavy oil in the water is had the adsorbance of super large.Therefore, expanded graphite is to purify oily waste water and administer a kind of up-and-coming novel environment friendly carbonaceous material that marine oils is polluted.
Expanded graphite stems from its design feature to the good adsorption performance of oily substance.The structure of the structure of expanded graphite and common porous material has very big difference, and the structure of the expanded graphite that different material, different preparation condition obtain also has very big-difference.But, from the essence that pore structure forms, dissimilar expanded graphites, its architectural feature still has a lot of something in commons.Porosity between expanded graphite particles accounts for more than 85%, and the porosity of expanded graphite particles open bore accounts for more than 13%, and the porosity of the lipostomous of expanded graphite particles is less than 1%.Research obtains, and the hole of expanded graphite particles is divided into quaternary structure, comprises the V-type open bore between the particle segment, and yardstick is tens of to hundreds of microns; With the axially vertical several willow leaf shape holes of arriving tens of microns of vermiform particle; Zero point on the axial sheet aspect of vertical particle several hole and nano grade pores of measuring of BET to several microns.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing advanced treating technology, propose a kind of method that adopts new filtering material expanded graphite advanced treating oil field extracted water.
Method for deeply treating water extracted out from oil field of the present invention may further comprise the steps:
1. oil field waste is through after oil removing, removing the suspension preliminary treatment, oil content≤50mg/L, suspension≤10mg/L.
2. enter the adsorption tower that expanded graphite is housed through above-mentioned pretreated waste water continuously through flow meter, behind the stop certain hour, water outlet reaches produced-water reinjection water quality standard: oil content≤10mg/L, suspension≤3mg/L.Expanded graphite wherein of the present invention, be meant the conditioning agent ammonium molybdate that adds hand-hole, ferric trichloride, cobalt chloride etc., swelling temperature is 700-100 ℃, and the control aperture is at 5-50 μ m, make it oil emulsion and fine elaioleucite in the suitable advanced treating oil field waste, the oil suction capacity reaches 20～50mg/mg.
3. graphite is after operation a period of time, and the oil suction capacity descends, and takes out, and accompanies burning through decompression distillation and high temperature, and is reusable.
Advantage of the present invention:
Method of the present invention can realize oil suction and remove suspension and carry out simultaneously.Expanded graphite is adsorbed oil efficiently, and the characteristic with activated carbon can be filtered suspension.The dynamic oil absorption of expanded graphite reaches 20～50mg/mg, is that other sorbing material is beyond compare.Adopt this method advanced treating oil field extracted water, technology is simple, and is easy to operate.
Description of drawings
Fig. 1 is concrete process flow diagram
1. pump 2. flow meters 3. adsorption towers
The specific embodiment
Embodiment 1
0.1g expanded graphite is filled in the adsorption tower, post footpath 20mm, column length 100mm, oil field waste is through after oil removing, removing the suspension preliminary treatment, and oil content is 49mg/L, and suspension is 9.5mg/L, waste water is squeezed in the adsorption tower by pump by flow meter with the 100ml/h flow velocity after the preliminary treatment, oil content and the suspension analyzed in the water outlet every 1 hour, oil content≤10mg/L wherein, suspension≤3mg/L, after 200 hours, the water outlet oil content is 12mg/L, and suspension is 3mg/L, termination of pumping.Expanded graphite oil suction capacity reaches 8mg/mg, can effectively remove suspension.
Embodiment 2
The 9g expanded graphite is filled in the adsorption tower, post footpath 50mm, column length 500mm, oil field waste is through after oil removing, removing the suspension preliminary treatment, and oil content is 49mg/L, and suspension is 9.5mg/L, waste water is squeezed in the adsorption tower by pump by flow meter with the 50L/h flow velocity after the preliminary treatment, oil content and the suspension analyzed in the water outlet every 1 hour, oil content≤10mg/L wherein, suspension≤3mg/L, after 48 hours, the water outlet oil content is 11mg/L, and suspension is 3mg/L, termination of pumping.Expanded graphite oil suction capacity reaches 20mg/mg, can effectively remove suspension.
Embodiment 3
The 80Kg expanded graphite is filled in the adsorption tower, post footpath 800mm, column length 3000mm, oil field waste is through after oil removing, removing the suspension preliminary treatment, and oil content is 49mg/L, and suspension is 9.5mg/L, waste water is squeezed in the adsorption tower by pump by flow meter with the 12.5m3/h flow velocity after the preliminary treatment, oil content and the suspension analyzed in the water outlet every 6 hours, oil content≤10mg/L wherein, suspension≤3mg/L, after 180 hours, the water outlet oil content is 11mg/L, and suspension is 3mg/L, termination of pumping.Expanded graphite oil suction capacity reaches 20mg/mg, can effectively remove suspension.
Claims (1)
1. method for deeply treating water extracted out from oil field is characterized in that may further comprise the steps:
(1) oil field waste is through after oil removing, removing the suspension preliminary treatment, oil content≤50mg/L, suspension≤10mg/L;
(2) enter the adsorption tower that expanded graphite is housed through above-mentioned pretreated waste water continuously through flow meter, behind the stop certain hour, water outlet reaches the produced-water reinjection water quality standard; Expanded graphite wherein of the present invention, be meant the conditioning agent ammonium molybdate that adds hand-hole, ferric trichloride, cobalt chloride etc., swelling temperature is 700-100 ℃, and the control aperture is at 5-50 μ m, make it oil emulsion and fine elaioleucite in the suitable advanced treating oil field waste, the oil suction capacity reaches 20～50mg/mg;
(3) graphite is after operation a period of time, and the oil suction capacity descends, and takes out, and accompanies burning through decompression distillation and high temperature, and is reusable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039182 CN1687561A (en) | 2005-04-30 | 2005-04-30 | Method for deeply treating water extracted out from oil field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039182 CN1687561A (en) | 2005-04-30 | 2005-04-30 | Method for deeply treating water extracted out from oil field |
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| Publication Number | Publication Date |
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| CN1687561A true CN1687561A (en) | 2005-10-26 |
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| CN 200510039182 Pending CN1687561A (en) | 2005-04-30 | 2005-04-30 | Method for deeply treating water extracted out from oil field |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865884A (en) * | 2017-01-20 | 2017-06-20 | 浙江双益环保科技发展有限公司 | A kind of advanced treatment process of petrochemical wastewater |
| CN109476513A (en) * | 2016-08-12 | 2019-03-15 | 迪热克塔普拉斯股份公司 | Process for treating water containing hydrocarbons by expanded graphite |
| CN109713302A (en) * | 2018-12-10 | 2019-05-03 | 江苏大学 | Under a kind of ultralow temperature can big multiplying power charge and discharge lithium ion battery and preparation method thereof |
-
2005
- 2005-04-30 CN CN 200510039182 patent/CN1687561A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109476513A (en) * | 2016-08-12 | 2019-03-15 | 迪热克塔普拉斯股份公司 | Process for treating water containing hydrocarbons by expanded graphite |
| CN109476513B (en) * | 2016-08-12 | 2021-11-23 | 迪热克塔普拉斯股份公司 | Method for treating water containing hydrocarbons by means of expanded graphite |
| CN106865884A (en) * | 2017-01-20 | 2017-06-20 | 浙江双益环保科技发展有限公司 | A kind of advanced treatment process of petrochemical wastewater |
| CN109713302A (en) * | 2018-12-10 | 2019-05-03 | 江苏大学 | Under a kind of ultralow temperature can big multiplying power charge and discharge lithium ion battery and preparation method thereof |
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