CN101774662A - Thickened oil sewage demulsifier - Google Patents
Thickened oil sewage demulsifier Download PDFInfo
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- CN101774662A CN101774662A CN200910244127A CN200910244127A CN101774662A CN 101774662 A CN101774662 A CN 101774662A CN 200910244127 A CN200910244127 A CN 200910244127A CN 200910244127 A CN200910244127 A CN 200910244127A CN 101774662 A CN101774662 A CN 101774662A
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Abstract
The invention discloses a thickened oil sewage demulsifier, which comprises a compound shown in a general formula I and a compound and a solvent shown in a general formula II, wherein R1 is alkyl group with 6-24 backbone carbon atoms in the general formula I; and R2 is alkyl group with 8-22 backbone carbons, and Ar is aryl group. The thickened oil sewage demulsifier has stronger surface activity, better hydrophile and oleophylic performance and stronger segmer agglutinating capability, and can spread fast towards the oil-water interface in the thickened sewage oil emulsion fluid, displace or partially displace an emulsifier adsorbed on the oil-water interface and damage the interface liquid film, has good demulsification performance to the oil emulsion fluid and is applied in the field of thickened oil sewage processing.
Description
Technical field
The present invention relates to a kind of heavy oil sewage demulsifier.
Background technology
Condensed oil sewage is a kind of of oil production waste water in oil field, mostly is O/W (oil-in-water) type milk sap, and stability is strong.Suspension content height wherein, the profit density difference is little, has bigger viscosity, and water temperature is higher, and complicated component is changeable.The condensed oil sewage processing technological flow is exactly oil removing, the optimum combination that removes suspended substance, remove hardness and remove technologies such as silicon-dioxide with regard to its essence.Serious because of condensed oil sewage emulsification, must carry out breakdown of emulsion before handling, remove most suspension oils, for filtering system, melded system and the biological treatment system of back segment creates favorable conditions.Yet existing emulsion splitter mostly is the emulsion splitter of W/O (water-in-oil) type milk sap greatly, and the kind of O/W type emulsion breakdown agent is limited, and performance is not ideal enough.Therefore extremely urgent at the emulsion splitter of condensed oil sewage research and development new chemical structure.
Dendrimer (dendrimer) is the class novel high polymer that last century, the mid-80 was developed, and has three-dimensional globosity, contains the multiple structural unit in the molecule.Bulk of molecule, shape and composition can design from molecular level, have many unique advantages such as accurate, the single dispersion of molecular structure, good water solubility, all have the potential purposes in fields such as biological medicine, material modification, Industrial Catalysis and oil productions.
Contain hydrophilic and dendrimer molecule lipophilic group simultaneously and have better water solubility, hydrophilic and oleophilic performance and stronger segment agglutinating power preferably, can be very fast in milk sap spread to oil-water interface, displacement or part displace the emulsifying agent that adsorbs on the oil-water interface, destroy Interfacial Liquid Membranes, oil droplet is gathered, the bigger oil droplet of formation particle diameter is separated from water under the buoyancy of water effect gradually, thereby reaches the purpose of breakdown of emulsion.
Summary of the invention
The objective of the invention is to handle, a kind of new O/W type emulsion splitter is provided at condensed oil sewage.The present invention is a parent with the dendrimer molecule, its polarity amidine functional group is further modified, and carried out compositely with conventional emulsion splitter, has developed a kind of novel heavy oil sewage demulsifier.
Novel heavy oil sewage demulsifier provided by the invention is the compound that comprises chain alkyl 1.0G (generation) polyamide-amide, chain alkyl aryl sulfonic acid and solvent.Wherein, chain alkyl 1.0G polyamide-amide is the compound shown in the formula I general structure, and the chain alkyl aryl sulfonic acid is the compound shown in the formula II general structure.
In the formula I general structure, R
1For the backbone c atoms number is the alkyl of 6-24, preferred backbone c atoms number is the alkyl of 11-19, and more preferably the backbone c atoms number is 13,15 or 17 alkyl.
In the formula II general structure, R
2For the backbone c atoms number is the alkyl of 8-22, preferred atomicity is the alkyl of 11-19, and more preferably the backbone c atoms number is 11,13 or 15 alkyl.Ar is an aryl, is preferably phenyl, naphthyl or xenyl, more preferably xenyl.
In this heavy oil sewage demulsifier, the ratio of the total mass of compound and solvent quality is 40-80: 60-20 shown in compound shown in the formula I general structure and the formula II general structure, preferred 45-55: 55-45; The mass ratio of compound is 60-90: 40-10 shown in compound shown in the formula I general structure and the formula II general structure, preferred 65-75: 35-25.Solvent can in water, methyl alcohol, ethanol and the dimethylbenzene any one or arbitrarily several with arbitrary proportion blended mixture, preferably water or ethanol.
Described heavy oil sewage demulsifier can make the compound shown in the formula I general structure, the compound shown in the formula II general structure and solvent mixing.Wherein, the compound shown in the formula I general structure, promptly chain alkyl 1.0G polyamide-amide is to prepare 0.5G with methyl acrylate by Michael reaction earlier by long-chain amine, is raw material again with 0.5G, gets by the amidation condensation reaction with quadrol; Compound shown in the formula II general structure, promptly the chain alkyl aryl sulfonic acid can directly be buied by market.
Heavy oil sewage demulsifier provided by the invention has better water solubility, stronger surfactivity and stronger segment agglutinating power.Can be very fast in condensed oil sewage milk sap spread to oil-water interface, displacement or part displace the emulsifying agent that adsorbs on the oil-water interface, destroy Interfacial Liquid Membranes, and O/W type milk sap is had good demulsification performance, can be applicable to the condensed oil sewage process field.
Embodiment
The prepared heavy oil sewage demulsifier of the present invention is a kind of compound system that comprises chain alkyl 1.0G polyamide-amide, chain alkyl aryl sulfonic acid and solvent.Each moiety structure and proportion have certain influence to demulsification performance.
The invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.
Embodiment 1: the preparation of heavy oil sewage demulsifier A
With the compound shown in 80g (40 parts) the formula III structural formula (is chain alkyl 1.0G polyamide-amide, its preparation method please refer to the above preparation method of compound shown in the Chinese style I), the compound (being alkyl aryl sulphonic acid) shown in 20g (10 parts) the formula IV and 100g (50 parts) ethanol mixes, and obtains emulsion splitter A.
Embodiment 2: the preparation of heavy oil sewage demulsifier B
Compound (being alkyl aryl sulphonic acid) shown in compound (being chain alkyl 1.0G polyamide-amide) shown in 70g (35 parts) the formula III structural formula, 30g (15 parts) the formula IV and 100g (50 parts) ethanol are mixed, obtain emulsion splitter B.
Embodiment 3: the preparation of heavy oil sewage demulsifier C
Compound (being alkyl aryl sulphonic acid) shown in compound (being chain alkyl 1.0G polyamide-amide) shown in 60g (30 parts) the formula III structural formula, 40g (20 parts) the formula IV and 100g ethanol are mixed, obtain emulsion splitter C.
Embodiment 4: the preparation of heavy oil sewage demulsifier D
Compound (being alkyl aryl sulphonic acid) shown in compound (being chain alkyl 1.0G polyamide-amide) shown in 50g (25 parts) the formula III structural formula, 50g (25 parts) the formula IV and 100g (50 parts) ethanol are mixed, obtain emulsion splitter D.
Embodiment 5: the preparation of heavy oil sewage demulsifier E
With the compound shown in 70g (35 parts) the formula V structural formula (is chain alkyl 1.0G polyamide-amide, its preparation method please refer to the above preparation method of compound shown in the Chinese style I), the compound (being alkyl aryl sulphonic acid) shown in 30g (15 parts) the formula IV and 100g (50 parts) ethanol mixes, and obtains emulsion splitter E.
Embodiment 6: the preparation of heavy oil sewage demulsifier F
With the compound shown in 70g (35 parts) the formula VI structural formula (is chain alkyl 1.0G polyamide-amide, its preparation method please refer to the above preparation method of compound shown in the Chinese style I), the compound (being alkyl aryl sulphonic acid) shown in 30g (15 parts) the formula IV and 100g (50 parts) ethanol mixes, and obtains emulsion splitter F.
Embodiment 7: the preparation of heavy oil sewage demulsifier G
Compound (being alkyl aryl sulphonic acid) shown in compound (being chain alkyl 1.0G polyamide-amide) shown in 70g (35 parts) the formula III structural formula, 30g (15 parts) the formula VII and 100g (50 parts) ethanol are mixed, obtain emulsion splitter G.
Embodiment 8: the preparation of heavy oil sewage demulsifier H
Compound (being alkyl aryl sulphonic acid) shown in compound (being chain alkyl 1.0G polyamide-amide) shown in 70g (35 parts) the formula III structural formula, 30g (15 parts) the formula VIII and 100g (50 parts) ethanol are mixed, obtain emulsion splitter H.
Embodiment 9: the demulsification experiment of heavy oil sewage demulsifier
Shengli Oil Field is faced the condensed oil sewage that coils the oil recovery factory, the condensed oil sewage in Bohai SZ 36-1 oil field and the condensed oil sewage of Karamay oilfield carry out bottle examination method breakdown of emulsion respectively under differing temps, experimental result is shown in table 1-table 3.
This bottle examination method breakdown of emulsion is with reference to the oil and gas industry standard SY/T5281-2000 of the People's Republic of China (PRC) " crude oil demulsifier use properties detection method (bottle examination method) " and with reference to China National Offshore Oil Corporation (CNOOC) company standard (Q/HS2020-2004).Concrete steps are:
Ready condensed oil sewage milk sap sample is poured in the dehydration trial jar, used the water-bath preheating, constant temperature time is no less than 15min.
In predetermined dehydration trial jar, inject a certain amount of heavy oil sewage demulsifier solution with liquid getting device or syringe.
The vibration of dehydration trial jar can be adopted mechanical oscillation method or artificial succusion.A) mechanical oscillation method: after screwing bottle cap trial jar is placed on rapidly on the concussion machine, concussion 0.5～5min, fully mixing takes off the dehydration trial jar, loosening bottle cap, and again trial jar is placed quiescent settling in the water bath with thermostatic control.B) artificial succusion: after screwing bottle cap, the trial jar that will dewater is put upside down 2～5 times, after the slowly loosening bottle cap venting, screw bottle cap again, mode is directly vibrated by hand, also trial jar can be placed in the artificial vibration case, level vibration 50～200 times, amplitude should be greater than 20cm, after thorough mixing is even, loosening bottle cap, and the trial jar that will dewater again places the water bath with thermostatic control standing sedimentation.Embodiment among the present invention all adopts above-mentioned artificial succusion.
The water yield of deviating from of different time is write down in range estimation, when stopping sedimentation, and observed and recorded sewage color and water-oil interface situation.
Table 1 emulsion splitter faces the breakdown of emulsion experimental result of dish oil recovery factory condensed oil sewage to Shengli Oil Field
Table 2 emulsion splitter is to the breakdown of emulsion experimental result of Bohai SZ 36-1 oil-field thick-oil sewage
Table 3 emulsion splitter is to the breakdown of emulsion experimental result of Karamay oilfield condensed oil sewage
Above result shows that heavy oil sewage demulsifier provided by the invention has demulsification performance preferably to condensed oil sewage milk sap.Especially emulsion splitter B, G and H, at the scene under the breakdown of emulsion temperature, dehydration rate all can reach more than 70% in 90 minutes.
Claims (9)
1. a heavy oil sewage demulsifier comprises compound and the solvent shown in the compound shown in the formula I general structure, the formula II general structure;
In the described formula I general structure, R
1For the backbone c atoms number is the alkyl of 6-24;
In the described formula II general structure, R
2For the backbone c atoms number is the alkyl of 8-22, Ar is an aryl.
2. heavy oil sewage demulsifier according to claim 1 is characterized in that: described heavy oil sewage demulsifier is by the compound shown in the formula I general structure, compound and the solvent composition shown in the formula II general structure.
3. heavy oil sewage demulsifier according to claim 1 and 2 is characterized in that: described solvent be selected from water, methyl alcohol, ethanol and the dimethylbenzene any one or arbitrarily several with arbitrary proportion blended mixture.
4. heavy oil sewage demulsifier according to claim 3 is characterized in that: described solvent is water or ethanol.
5. heavy oil sewage demulsifier according to claim 1 is characterized in that: in the described formula I general structure, and R
1For the backbone c atoms number is the alkyl of 11-19;
In the described formula II general structure, R
2For the backbone c atoms number is the alkyl of 11-19, Ar is phenyl, naphthyl or xenyl.
6. heavy oil sewage demulsifier according to claim 5 is characterized in that: in the described formula I general structure, and R
1It for the backbone c atoms number 13,15 or 17 alkyl;
In the described formula II general structure, R
2For the backbone c atoms number is 11,13 or 15 alkyl, Ar is an xenyl.
7. heavy oil sewage demulsifier according to claim 1 and 2 is characterized in that: the total mass of the compound shown in compound shown in the formula I general structure and the formula II general structure and the ratio of solvent quality are 40-80: 60-20;
The mass ratio of compound is 60-90: 40-10 shown in compound shown in the described formula I general structure and the formula II general structure.
8. heavy oil sewage demulsifier according to claim 7 is characterized in that: the total mass of the compound shown in compound shown in the described formula I general structure and the formula II general structure is 45-55: 55-45 with the ratio of solvent quality;
The mass ratio of compound is 65-75: 35-25 shown in compound shown in the described formula I general structure and the formula II general structure.
9. a method for preparing the described heavy oil sewage demulsifier of claim 1 is with the compound shown in the formula I general structure, the compound shown in the formula II general structure and solvent mixing, obtains described heavy oil sewage demulsifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102441277A CN101774662B (en) | 2009-12-29 | 2009-12-29 | Thickened oil sewage demulsifier |
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| CN2009102441277A CN101774662B (en) | 2009-12-29 | 2009-12-29 | Thickened oil sewage demulsifier |
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| CN101774662A true CN101774662A (en) | 2010-07-14 |
| CN101774662B CN101774662B (en) | 2012-03-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041039A (en) * | 2010-12-27 | 2011-05-04 | 中国海洋石油总公司 | Composite crude oil demulsifying agent |
| CN104556624A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Oil sludge demulsifier and oil sludge advanced treatment process |
| CN104762102A (en) * | 2015-02-13 | 2015-07-08 | 濮阳市联众兴业化工有限公司 | Composite emulsion breaker and method using composite emulsion breaker for breaking ethylene butter |
-
2009
- 2009-12-29 CN CN2009102441277A patent/CN101774662B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041039A (en) * | 2010-12-27 | 2011-05-04 | 中国海洋石油总公司 | Composite crude oil demulsifying agent |
| CN102041039B (en) * | 2010-12-27 | 2013-09-04 | 中国海洋石油总公司 | Composite crude oil demulsifying agent |
| CN104556624A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Oil sludge demulsifier and oil sludge advanced treatment process |
| CN104556624B (en) * | 2013-10-22 | 2016-02-10 | 中国石油化工股份有限公司 | A kind of greasy filth emulsion splitter and greasy filth advanced treatment process |
| CN104762102A (en) * | 2015-02-13 | 2015-07-08 | 濮阳市联众兴业化工有限公司 | Composite emulsion breaker and method using composite emulsion breaker for breaking ethylene butter |
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| Publication number | Publication date |
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| CN101774662B (en) | 2012-03-28 |
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