CN106315757B - A kind of highly effective oil remover for oilfield polymer flooding output water - Google Patents
A kind of highly effective oil remover for oilfield polymer flooding output water Download PDFInfo
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- CN106315757B CN106315757B CN201610977940.5A CN201610977940A CN106315757B CN 106315757 B CN106315757 B CN 106315757B CN 201610977940 A CN201610977940 A CN 201610977940A CN 106315757 B CN106315757 B CN 106315757B
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- degreaser
- capric aldehyde
- polymer flooding
- output water
- highly effective
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229920000642 polymer Polymers 0.000 title claims abstract description 33
- 239000013527 degreasing agent Substances 0.000 claims abstract description 46
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 32
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004593 Epoxy Substances 0.000 claims abstract description 18
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 claims abstract description 18
- MPPPKRYCTPRNTB-UHFFFAOYSA-N 1-bromobutane Chemical compound CCCCBr MPPPKRYCTPRNTB-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 229910015900 BF3 Inorganic materials 0.000 claims abstract description 11
- 125000002091 cationic group Chemical group 0.000 claims abstract description 7
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 16
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 15
- 238000010792 warming Methods 0.000 claims description 14
- 239000012043 crude product Substances 0.000 claims description 10
- VYINFCSNQGZQFW-UHFFFAOYSA-N 4-(2-bromoethyl)-2-nonyl-1,3-dioxolane Chemical compound C(CCCCCCCC)C1OCC(O1)CCBr VYINFCSNQGZQFW-UHFFFAOYSA-N 0.000 claims description 9
- PXJIFKJONQAEBN-UHFFFAOYSA-M sodium;acetonitrile;iodide Chemical compound [Na+].[I-].CC#N PXJIFKJONQAEBN-UHFFFAOYSA-M 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 8
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical group ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003208 petroleum Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 235000009518 sodium iodide Nutrition 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- -1 2- nonyl Chemical group 0.000 claims description 2
- 125000000623 heterocyclic group Chemical group 0.000 claims description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims 2
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- OCKVHEPGKLSGLL-UHFFFAOYSA-N [Br].CCCC Chemical compound [Br].CCCC OCKVHEPGKLSGLL-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 description 20
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001348 alkyl chlorides Chemical class 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Epoxy Resins (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to disposing polluted water in oil technical fields, more particularly to a kind of highly effective oil remover for oilfield polymer flooding output water, the degreaser is to be reacted to generate intermediate with epoxy bromobutane under the catalysis of boron trifluoride ether solution by n-capric aldehyde, then reacts with pyrimidine and generates cationic degreaser.Wherein, the molar ratio of n-capric aldehyde, epoxy bromobutane and pyrimidine is 1: 0.75~1.5: 0.5~2, preferably 1: 1.2: 0.9.Degreaser of the invention has the characteristics that preparation process is simple, low in cost, adaptable and deoiling effect is good, and oil removal rate is up to 97% or more.Therefore, present invention is generally applicable in the oil removing process of oilfield polymer flooding output water.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of efficiently removing for oilfield polymer flooding output water
Finish.
Background technique
Polymer displacement of reservoir oil tech has been achieved for preferable oil increasing effect at present.Contain polyacrylamide in polymer displacement of reservoir oil
(PAM), since PAM and emulsifier molecules have similitude, so that there are molecules in system to concentrate on oil-water interfaces by PAM, with
Emulsification molecule is formed together the composite membrane of larger intensity and favorable elasticity.Based on These characteristics, polymer displacement of reservoir oil output sewage
It is higher containing oil index.
With the expansion of polymer displacement of reservoir oil application scale, accompanying problem is that polymer-flooding sewage is handled.Polymer displacement of reservoir oil
Sewage in not only oil content it is high, but also contain a large amount of polymer.The presence of polymer increases the viscosity of water phase, makes water phase
Oily ability enhancing is taken, the difficulty of water-oil separating is increased；Microcosmic test result shows that polymer increases oil-water interfaces intensity,
Interface charge enhancing, causes small oil droplet in recovered water to be stable in the presence of in water body, increases processing difficulty；In addition, polymer
In the presence of the using effect for also disturbing flocculant, flocculation is made to be deteriorated, considerably increases the dosage of medicament；Due to polymer
The adsorptivity of suction-operated, polymer is stronger, and the quantity of sand and mud of carrying increases, and substantially reduces backwashing period.
At present frequently with measure mainly have: 1. physical means polymer-contained sewage.Such technology mainly includes electric dehydration
Technology, " two-stage sedimentation, twice pressure filtration " processing technique and jet air float technology etc.；2. chemical method processing contains
Poly- sewage.Such technology carries out demulsification processing first, and then the medicaments such as further preferably suitable degreaser carry out purification process.
With the deep progress of polymer flooding, the treating capacity of polymer-bearing waste-water is increasing, and ingredient also becomes increasingly complex, this is not
Only increase the difficulty of sewage treatment, also will cause the accelerated ageing of processing equipment, it can be seen that, the processing of polymer-bearing waste-water is oil
The guarantee of field efficient health stable yields.But since ground implementation operation mode is complicated and changeable, sewage composition is caused to have apparent
Regional and timeliness.
Patent ZL201410455664.7 " a kind of degreaser for oil field binary combination flooding output sewage " uses third
Alkene acyloxyethyl dimethyl amine, alkyl chloride, acrylamide, N, N '-methylene-bisacrylamide, ammonium persulfate and sodium sulfite are anti-
It should form, which has dosage few, at low cost, the high feature of oil removal rate, and oil removal efficiency is high, and preparation is simple, at low cost etc.
Feature, but the degreaser belongs to reverse demulsifier, it is poor for the demulsification of emulsion oil-in-water, meanwhile, the degreaser
It is not suitable for the oil removal treatment of polymer-bearing waste-water.
Summary of the invention
The present invention is directed to the deficiency of currently available technology and provides a kind of efficiently removing for oilfield polymer flooding output water
Finish, the degreaser have the characteristics that preparation process is simple, low in cost, adaptable and deoiling effect is good.
The purpose of the present invention is to provide a kind of highly effective oil remover for oilfield polymer flooding output water, which is
It is reacted under the catalysis of boron trifluoride ether solution with epoxy bromobutane by n-capric aldehyde and generates intermediate, life is then reacted with pyrimidine
At cationic degreaser, molecular formula is as follows:
The molar ratio of the n-capric aldehyde, epoxy bromobutane and pyrimidine is 1: 0.75~1.5: 0.5~2, preferably 1: 1.2
∶0.9。
It is another object of the present invention to provide a kind of systems of highly effective oil remover for oilfield polymer flooding output water
Preparation Method, the preparation method being somebody's turn to do specifically includes the following steps:
(1) the positive last of the ten Heavenly stems of above-mentioned molar ratio is added in the three-necked flask that electric mixer, reflux condensing tube, thermometer are housed
Then solvent is added in aldehyde, be warming up to 30~35 DEG C, stirring rate be 300~400rpm under stir 10~30min, then plus
Enter catalyst, the epoxy bromobutane of above-mentioned molar ratio is placed into constant pressure funnel, control drop speed is 2~4 drops/min, is risen
For temperature to 50~60 DEG C, stirring rate is 400~600rpm, 5~12h of isothermal reaction is cooled to room temperature after the reaction was completed, is obtained
Mesosome 2- nonyl -4- bromoethyl -1,3- dioxolane solution.
(2) above-mentioned molar ratio is added in above-mentioned intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution
Pyrimidine adjusts the temperature to 35~40 DEG C, and stirring rate is adjusted to 200~350rpm, 5~10min of constant temperature, and sodium iodide acetonitrile is molten
Liquid is placed into constant pressure funnel, and control drop speed is 1~3 drop/min, is warming up to 70~80 DEG C, and stirring rate is 300~
500rpm, 12~18h of isothermal reaction are naturally cooling to room temperature, are then filtered to remove solvent, obtain crude product.
(3) the above-mentioned crude product of petroleum ether is used, is washed 2~3 times, by the dry 24~48h of products therefrom, it is viscous to obtain brown
Thick product, i.e., degreaser of the invention.
The solvent is carbon tetrachloride or acetonitrile, and dosage is 10~15 times of n-capric aldehyde quality；The catalyst is
The boron trifluoride ether solution of mass concentration 30%, dosage are the 0.05~0.1% of n-capric aldehyde quality；The sodium iodide acetonitrile
The dosage of sodium iodide is the 1~2% of n-capric aldehyde quality in solution, and the dosage of acetonitrile is positive the last of the ten Heavenly stems in the sodium iodide acetonitrile solution
The 10~20% of aldehyde quality.
The reaction equation is as follows:
The degreaser of polymer flooding water provided by the invention, belongs to cationic surface active agent, with certain
Positive charge group, electrostatic neutralising capacity is strong, and the ζ-potential on oil droplet surface declines rapidly, and the probability of collision coalescence increases between oil droplet,
It is flocculated to play the role of；In addition, the oil removing agent molecule contains hydrophobic long-chain and heterocycle polar group, be easy to in sewage
Oil droplet absorption, molecule electronegative in water is adsorbed onto around degreaser, and then w/o type lotion is caused to be easy to be demulsified；This
The oil removing agent molecule of invention is easily adsorbed with greasy dirt, and then the polymer for being coated on greasy surfaces is replaced, and has broken O/W type cream
The stability of liquid, reduces the viscosity of polymer flooding water, to release the impurity such as the silt carried in sewage.To sum up institute
It states, degreaser of the present invention combines cohesion, demulsification and reduction by three effects of viscosity, improves oil removing effect
Rate.
The present invention is had the following advantages and beneficial effects: compared with prior art
(1) raw material sources of degreaser of the invention are extensive, synthesis technology is simple, adaptable, dosage is few；
(2) degreaser of the invention does not contain inorganic flocculation ingredient, has cohesion, demulsification and reduces viscosity three-in-one
Effect；
(3) degreaser of the invention has the characteristics that oil removal efficiency is high, and the oil removal rate of polymer-bearing waste-water is more existing up to 97% or more
Some medicaments improve 50% or more, meet the pretreated requirement of oil removing of polymer flooding water.
Specific embodiment
The present invention is described in further detail below with reference to specific embodiment, and referring to data.It should be understood that these embodiments
It is of the invention solely for the purpose of illustration, rather than limit the scope of the invention in any way.
Embodiment 1: degreaser A1And preparation method thereof
(1) degreaser A1Composition and component it is as follows:
Degreaser A1It is to be reacted among generation under the catalysis of boron trifluoride ether solution with epoxy bromobutane by n-capric aldehyde
Then body reacts with pyrimidine and generates cationic degreaser, molecular formula is as follows:
Wherein, the molar ratio of n-capric aldehyde, epoxy bromobutane and pyrimidine is 1: 1.2: 0.9.
(2) degreaser A1The preparation method is as follows:
1. the n-capric aldehyde of 1mol is added in the three-necked flask that electric mixer, reflux condensing tube, thermometer are housed, then
1872g carbon tetrachloride is added, is warming up to 30 DEG C, stirs 10min in the case where stirring rate is 300rpm, 0.078g mass is then added
The boron trifluoride ether solution that concentration is 30%, the epoxy bromobutane of 1.2mol is placed into constant pressure funnel, control drop
Speed is 2 drops/min, is warming up to 56 DEG C, stirring rate 500rpm, isothermal reaction 5h and is cooled to room temperature, obtains after the reaction was completed
Intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution.
2. the pyrimidine of 0.9mol is added in above-mentioned intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution,
38 DEG C are adjusted the temperature to, stirring rate is adjusted to 200rpm, constant temperature 5min, and sodium iodide acetonitrile solution is placed into constant pressure addition leakage
In bucket, wherein the dosage 1.56g of sodium iodide, the dosage of acetonitrile are 15.6g, and control drop speed is 1 drop/min, is warming up to 76 DEG C, stirs
Mixing rate is 400rpm, and isothermal reaction 12h is naturally cooling to room temperature, is then filtered to remove solvent, obtains crude product.
3. being washed 2 times with the above-mentioned crude product of petroleum ether, for 24 hours by products therefrom drying, viscous brown product is obtained,
Degreaser A i.e. of the invention1。
Embodiment 2: degreaser A2And preparation method thereof
(1) degreaser A2Composition and component it is as follows:
Degreaser A2It is to be reacted among generation under the catalysis of boron trifluoride ether solution with epoxy bromobutane by n-capric aldehyde
Then body reacts with pyrimidine and generates cationic degreaser, molecular formula is as follows:
Wherein, the molar ratio of n-capric aldehyde, epoxy bromobutane and pyrimidine is 1: 0.75: 0.5.
(2) degreaser A2The preparation method is as follows:
1. the n-capric aldehyde of 1mol is added in the three-necked flask that electric mixer, reflux condensing tube, thermometer are housed, then
1560g acetonitrile is added, is warming up to 32 DEG C, stirs 25min in the case where stirring rate is 350rpm, 0.10g mass concentration is then added
For 30% boron trifluoride ether solution, the epoxy bromobutane of 0.75mol is placed into constant pressure funnel, control drop speed is
3 drops/min are warming up to 50 DEG C, stirring rate 400rpm, isothermal reaction 8h and are cooled to room temperature after the reaction was completed, obtain centre
Body 2- nonyl -4- bromoethyl -1,3- dioxolane solution.
2. the pyrimidine of 0.5mol is added in above-mentioned intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution,
35 DEG C are adjusted the temperature to, stirring rate is adjusted to 260rpm, constant temperature 8min, and sodium iodide acetonitrile solution is placed into constant pressure addition leakage
In bucket, wherein the dosage 2.25g of sodium iodide, the dosage of acetonitrile are 25.2g, and control drop speed is 2 drops/min, is warming up to 70 DEG C, stirs
Mixing rate is 300rpm, and isothermal reaction 15h is naturally cooling to room temperature, is then filtered to remove solvent, obtains crude product.
3. being washed 3 times with the above-mentioned crude product of petroleum ether, by the dry 36h of products therefrom, viscous brown product is obtained,
Degreaser A i.e. of the invention2。
Embodiment 3: degreaser A3And preparation method thereof
(1) degreaser A3Composition and component it is as follows:
Degreaser A3It is to be reacted among generation under the catalysis of boron trifluoride ether solution with epoxy bromobutane by n-capric aldehyde
Then body reacts with pyrimidine and generates cationic degreaser, molecular formula is as follows:
Wherein, the molar ratio of n-capric aldehyde, epoxy bromobutane and pyrimidine is 1: 1.5: 2.
(2) degreaser A3The preparation method is as follows:
1. the n-capric aldehyde of 1mol is added in the three-necked flask that electric mixer, reflux condensing tube, thermometer are housed, then
2340g carbon tetrachloride is added, is warming up to 35 DEG C, stirs 30min in the case where stirring rate is 400rpm, 0.156g mass is then added
The boron trifluoride ether solution that concentration is 30%, the epoxy bromobutane of 1.5mol is placed into constant pressure funnel, control drop
Speed is 4 drops/min, is warming up to 60 DEG C, stirring rate 600rpm, isothermal reaction 12h and is cooled to room temperature, obtains after the reaction was completed
Intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution.
2. the pyrimidine of 2mol is added in above-mentioned intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution, adjust
Temperature is saved to 40 DEG C, stirring rate is adjusted to 350rpm, constant temperature 10min, and sodium iodide acetonitrile solution is placed into constant pressure addition leakage
In bucket, wherein the dosage 3.12g of sodium iodide, the dosage of acetonitrile are 31.2g, and control drop speed is 3 drops/min, is warming up to 80 DEG C, stirs
Mixing rate is 500rpm, and isothermal reaction 18h is naturally cooling to room temperature, is then filtered to remove solvent, obtains crude product.
3. being washed 3 times with the above-mentioned crude product of petroleum ether, by the dry 48h of products therefrom, viscous brown product is obtained,
Degreaser A i.e. of the invention3。
4 degreaser A of embodiment1Field application
Multi-purpose station H5Water be water from PAM flooding, test process scale be 80m3/ d, water oil content 623mg/L,
Sewage salinity 13560mg/L utilizes degreaser A of the invention1To multi-purpose station H5Sewage carry out oil removal treatment, keep sewage
The concentration of middle degreaser is 50mg/L, and oil content is reduced to 10.6mg/L after processing, and oil content reduces by 98.3%, reaches technique and want
It asks.
5 degreaser A of embodiment2Field application
Multi-purpose station H3Water be water from PAM flooding, test process scale be 60m3/ d, water oil content 875mg/L,
Sewage salinity 9852mg/L utilizes degreaser A of the invention2To multi-purpose station H3Sewage carry out oil removal treatment, keep sewage in
The concentration of degreaser is 75mg/L, and oil content is reduced to 21.9mg/L after processing, and oil content reduces by 97.5%, reaches technique and want
It asks.
6 degreaser A of embodiment3Field application
Multi-purpose station H12Water be water from PAM flooding, test process scale be 100m3/ d, water oil content 586mg/
L, sewage salinity 15285mg/L utilize degreaser A of the invention3Oil removal treatment is carried out to the sewage of multi-purpose station H12, is kept
The concentration of degreaser is 45mg/L in sewage, and oil content is reduced to 11.7mg/L after processing, and oil content reduces by 98.0%, reaches work
Skill requirement.
Claims (5)
1. a kind of highly effective oil remover for oilfield polymer flooding output water, which is characterized in that the degreaser is existed by n-capric aldehyde
It is reacted under the catalysis of boron trifluoride ether solution with epoxy bromobutane and generates intermediate, then reacted with pyrimidine and generate cationic
Degreaser, molecular formula are as follows:
2. a kind of preparation method of the highly effective oil remover for oilfield polymer flooding output water, which is characterized in that the preparation method
Specifically includes the following steps:
(1) n-capric aldehyde is added in the three-necked flask that electric mixer, reflux condensing tube, thermometer are housed, solvent is then added,
30~35 DEG C are warming up to, 10~30min is stirred in the case where stirring rate is 300~400rpm, catalyst is then added, by epoxy bromine
Butane is placed into constant pressure funnel, and control drop speed is 2~4 drops/min, is warming up to 50~60 DEG C, and stirring rate is 400~
600rpm, 5~12h of isothermal reaction, is cooled to room temperature after the reaction was completed, obtains intermediate 2- nonyl -4- bromoethyl -1,3- dioxy
Heterocycle pentane solution；
(2) pyrimidine is added in above-mentioned intermediate 2- nonyl -4- bromoethyl -1,3- dioxolane solution, adjusts the temperature to
35~40 DEG C, stirring rate is adjusted to 200~350rpm, 5~10min of constant temperature, and sodium iodide acetonitrile solution is placed into constant pressure drop
In liquid funnel, control drop speed is 1~3 drop/min, is warming up to 70~80 DEG C, stirring rate is 300~500rpm, isothermal reaction 12
~18h is naturally cooling to room temperature, is then filtered to remove solvent, obtains crude product；
(3) the above-mentioned crude product of petroleum ether is used, is washed 2~3 times, by the dry 24~48h of products therefrom, obtains viscous brown production
Object, i.e. degreaser；
The molar ratio of the n-capric aldehyde, epoxy bromobutane and pyrimidine is 1:0.75~1.5:0.5~2；
The solvent is carbon tetrachloride or acetonitrile, and dosage is 10~15 times of n-capric aldehyde quality；
The catalyst be mass concentration 30% boron trifluoride ether solution, dosage be n-capric aldehyde quality 0.05~
0.1%.
3. the preparation method of the highly effective oil remover according to claim 2 for oilfield polymer flooding output water, feature
It is, the molar ratio of the n-capric aldehyde, epoxy bromobutane and pyrimidine is 1:1.2:0.9.
4. the preparation method of the highly effective oil remover according to claim 2 for oilfield polymer flooding output water, feature
It is, the dosage of sodium iodide is the 1~2% of n-capric aldehyde quality in the sodium iodide acetonitrile solution.
5. the preparation method of the highly effective oil remover according to claim 2 for oilfield polymer flooding output water, feature
It is, the dosage of acetonitrile is the 10~20% of n-capric aldehyde quality in the sodium iodide acetonitrile solution.
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| CN106946768B (en) * | 2017-03-07 | 2019-06-21 | 徐州汉高科技发展有限公司 | A kind of oily wastewater degreaser and preparation method thereof |
| CN106966910B (en) * | 2017-03-23 | 2019-03-05 | 克拉玛依中科恒信科技有限责任公司 | A kind of degreaser and preparation method thereof for oil-contaminated water of oil field processing |
| CN107235529B (en) * | 2017-06-27 | 2020-07-03 | 中国石油化工股份有限公司 | Oil removal agent for oil-containing sewage treatment of oil field and preparation method thereof |
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