CN109231406A - The recovery method of surfactant in surfactant flooding sewage - Google Patents
The recovery method of surfactant in surfactant flooding sewage Download PDFInfo
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- CN109231406A CN109231406A CN201811193768.XA CN201811193768A CN109231406A CN 109231406 A CN109231406 A CN 109231406A CN 201811193768 A CN201811193768 A CN 201811193768A CN 109231406 A CN109231406 A CN 109231406A
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- cyclodextrin
- surfactant
- microballoon
- insoluble
- sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/681—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/301—Detergents, surfactants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses the recovery method of surfactant in surfactant flooding sewage, the preparation of the insoluble cyclodextrin microballoon of micro-meter scale of receiving；It is prepared by the inclusion compound of β-CD microballoon；The synthesis of β-CD cyclodextrin microballoon, finally obtains insoluble cyclodextrin；It is used for insoluble cyclodextrin to recycle surfactant in oilfield sewage.Beneficial effects of the present invention have invented a kind of method for adopting recycling surfactant in sewage from three using cyclodextrin insoluble polymer, cyclodextrin microballoon can it is economical, simply regenerate, cyclodextrin microballoon processing three may be implemented and adopt the continuous operation of sewage and the resource utilization of surfactant.
Description
Technical field
The invention belongs to disposing polluted water in oil technical fields, are related to insoluble cyclodextrin from surfactant flooding dirt
The method of surfactant is recycled in water.
Background technique
The oil displacement agents such as polymer, surfactant, alkali are widely used in tertiary oil recovery.The use of oil displacement agent is greatly improved
Oil recovery factor, but also cause Produced Liquid emulsification serious, great difficulty is brought to Produced Liquid processing.At conventional Produced Liquid
Reason process is generally divided into breaking emulsion and dewatering and sewage treatment two parts.For disposing polluted water in oil, difficulty is remaining oil displacement agent,
Part oil displacement agent can be removed by the methods of flocculation, oxidation, biochemistry, but can not achieve the resource utilization of oil displacement agent.
Insoluble cyclodextrin is got the attention in terms of handling dirty organic pollutants in recent years, is used
Supermolecule approach can efficiently and rapidly remove organic pollutant a small amount of in sewage, without secondary pollution, environmental-friendly, regeneration letter
It is single, it has a extensive future.For example phenol and its derivatives in sewage etc. can handle using insoluble cyclodextrin.No
Soluble cyclodextrin polymer remains the original cavity structure of cyclodextrin, slow controlled release, catalysis and recognition capability, and enhances ring paste
The hydrophobicity in smart hole, promotes the progress of clathration, and has both the preferable mechanical strength of high polymer and chemical adjustability.It is super
Molecular method gets the attention and studies in field of oilfield chemistry in recent years, the main Viscoelastic surfactant of the hot spot of research
The development and application of agent fracturing fluid and constructing for supermolecule oil displacement system are studied with Oil Displacing Capacity.Insoluble cyclodextrin
The shape of particle can be random, be also possible to microballoon, especially in the majority with the research of microballoon and application.Insoluble cyclodextrin is poly-
Close object be prepared by be cyclodextrin surface hydroxyl and crosslinking agent chemical reaction, most common crosslinking agent is epoxy chloropropionate
Alkane, in addition there are the polyethylene glycol of acylation, Adipoyl Chloride, diphenyl carbonate, glutaraldehydes etc..The selection of crosslinking agent, synthesis item
The performance for the insoluble cyclodextrin that part etc. can all influence, such as swellability, partial size, specific surface.
Summary of the invention
The purpose of the present invention is to provide the recovery methods of surfactant in surfactant flooding sewage.
Meanwhile providing economic, the simple regeneration method of cyclodextrin microballoon.
In order to achieve the goal above, the technical scheme adopted by the invention is that following the steps below:
Step 1: the synthesis of insoluble cyclodextrin microballoon；
Step 2: with surfactant in insoluble cyclodextrin microballoon removal surfactant flooding sewage；
Step 3: the regeneration of insoluble cyclodextrin and the recycling of surfactant.
Further, the synthesis of insoluble cyclodextrin microballoon includes reversed emulsion polymerization, seed emulsion in step 1
Polymerization, dispersion copolymerization method, surfactant- free emulsion polymerization etc..
Specific steps include: in step 1
(1) gelatinization of cyclodextrin
The sodium hydroxide for accurately weighing certain mass is placed in a beaker addition deionized water dissolving, is configured to mass concentration and is
20~35% solution, the cyclodextrin for weighing certain mass is stand-by, to equipped with constant pressure funnel, thermometer, three mouthfuls of agitating device
The sodium hydrate aqueous solution and cyclodextrin prepared is added in flask, starts to stir, mixing speed is 120~300rpm, avoids ring
Dextrin adheres to three-necked flask inner wall and cannot sufficiently dissolve gelatinization, and keeping bath temperature is 30~40 DEG C, stirs 10~120min,
Obtain colourless transparent solution.
Step (1) cyclodextrin is alpha-cyclodextrin, beta-cyclodextrin, the serial cyclodextrin of gamma-cyclodextrin and modification
Such as methylated cyclodextrin, hydroxyethyl modified cyclodextrin, hydroxypropyl modified cyclodextrin, ethyl cyclodextrin, acetyl cyclodextrin, carboxylic first
Cyclodextrin, sulfuric ester cyclodextrin and phosphate cyclodextrin etc..
The molar ratio of sodium hydroxide and cyclodextrin is (10~20) in the step (1): 1.
(2) crosslinking of beta-cyclodextrin
In the colourless transparent solution that step (1) obtains, weighs a certain amount of crosslinking agent and be added to constant pressure funnel
In the cyclodextrin solution of gelatinization, 50~70 DEG C are warming up to, quickly stirs 0.5-3h, mixing speed is 300~600rpm.
Crosslinking agent is epoxychloropropane, polyethylene glycol, Adipoyl Chloride, diphenyl carbonate, glutaraldehyde in the step (2)
Deng.
The molar ratio of crosslinking agent and cyclodextrin is (5~15) in the step (2): 1.
The time for adding of crosslinking agent is 5~30min in the step (2).
(3) cyclodextrin aggregates into microballoon
The emulsifier for weighing certain mass is dissolved in the oily phase of certain volume, and it is described to be stirring evenly and then adding into step (2)
In solution, quickly stir, mixing speed be 300~600rpm, react 2~8h after to get arrive beta-cyclodextrin cross-linked polymer microballoon.
In the step (3) emulsifier be oil soluble emulsifying agent such as sorbitan fatty acid ester (Span series, such as
Span20, Span40, Span60, Span80 etc.), polyethers nonionic surfactant (such as alkyl phenol polyoxyethylene ether, fat
Alcohol polyoxyethylene ether series etc.) or built surfactant such as SPAN surfactants and TWEEN Series (such as Tween20,
Tween40, Tween60, Tween80 etc.) surfactant mixture.
The HLB of emulsifier is 3~10 in the step (3).
Emulsifier and the mass ratio of oily phase are 1:(19~49 in the step (3)).
Oil is mutually kerosene, diesel oil, gasoline, solvent naphtha, petroleum ether, alkane such as hexane, hexamethylene, heptan in the step (3)
Alkane etc., aromatic hydrocarbons such as benzene, toluene, ethylbenzene, dimethylbenzene etc..
Oil is mutually (1~4) with the volume ratio of water phase in the step (3): 1.
(4) purifying of the poly- microballoon of cyclodextrin
Resulting cyclodextrin microballoon is cooled to room temperature, adjusts pH to 6~8 with dilute HCL aqueous solution, then use acetone
Washing 2~4 times, except phase of deoiling, obtains white solid in water phase, crude product is obtained by filtration, dry 12 in 40~80 DEG C of baking ovens
~48h, obtains target product.
In the step (4), the volume ratio of acetone and grease phase is 1:(2~8).
In the step (4), the aperture of filter paper is 1~3 μm.
Further, in step 2, with surface-active in insoluble cyclodextrin microballoon removal surfactant flooding sewage
Agent includes:
A certain amount of insoluble cyclodextrin microballoon is added into surfactant flooding sewage, cyclodextrin microsphere adds
Amount control places 1~8h in 0.1g/L-5.0g/L under agitation, and temperature is controlled at 25~75 DEG C, until cyclodextrin microsphere with
Surfactant inclusion in sewage reaches balance.
In the step 2, surfactant flooding sewage used is by the side such as filtering, oil removing, flocculation, bioanalysis, embrane method
Method treated sewage, indices meet SY/T 5329-2012 " clastic rock reservoir water water quality fertilizer index ".
In the step 2, the mass concentration of surfactant is 10~1000mg/L in surfactant flooding sewage.
In the step 2, the surfactant in surfactant flooding sewage be mainly anionic surfactant (such as
Sulfonate surfactant, carboxylate surfactant), nonionic surface active agent (such as polyoxyethylene ether series, it is poly-
Ethylene oxide polyethenoxy ether series, polyalcohol series, alkanolamide series etc.) and amphoteric ionic surfactant such as beet
Alkali series of surfactants.
Further, step 3 includes:
(1) regeneration of insoluble cyclodextrin microballoon
The insoluble cyclodextrin microballoon for reaching inclusion balance in step 2 is filtered with filter paper, 40~80 DEG C of baking ovens
12~48h of middle drying；Then 1~8h of immersion is carried out with organic solvent, soaking temperature is 30~80 DEG C, after organic solvent is impregnated
Microballoon filtered with filter paper, in 40~80 DEG C of baking ovens dry 12~48h, filtrate be used to recycle surfactant.Repeat above-mentioned step
Rapid 2~3 times to get regenerated insoluble cyclodextrin microballoon.
In the step (1), the aperture of filter paper is 1~3 μm.
In the step (1), organic solvent used is methanol, ethyl alcohol, ethylene glycol, propyl alcohol, acetone etc..
In the step (1), each additive amount of organic solvent is controlled in 5~30mL/g microballoon.
(2) recycling of surfactant
Filtrate in above-mentioned (1) is subjected to vacuum distillation processing, removes organic solvent, the surfactant recycled produces
Product.
Specific embodiment
Only invention is further described in detail for following embodiments, but does not constitute any limitation of the invention.
(1) gelatinization of cyclodextrin
The sodium hydroxide for accurately weighing certain mass is placed in a beaker addition deionized water dissolving, is configured to mass concentration and is
20~35% solution, the cyclodextrin for weighing certain mass is stand-by, to equipped with constant pressure funnel, thermometer, three mouthfuls of agitating device
The sodium hydrate aqueous solution and cyclodextrin prepared is added in flask, starts to stir, mixing speed is 120~300rpm, avoids ring
Dextrin adheres to three-necked flask inner wall and cannot sufficiently dissolve gelatinization, and keeping bath temperature is 30~40 DEG C, stirs 10~120min,
Obtain colourless transparent solution.Cyclodextrin is alpha-cyclodextrin, beta-cyclodextrin, the serial cyclodextrin such as first of gamma-cyclodextrin and modification
Base cyclodextrin, hydroxyethyl modified cyclodextrin, hydroxypropyl modified cyclodextrin, ethyl cyclodextrin, acetyl cyclodextrin, carboxymethyl ring
Dextrin, sulfuric ester cyclodextrin and phosphate cyclodextrin etc..The molar ratio of sodium hydroxide and cyclodextrin is (10~20): 1.
(2) crosslinking of beta-cyclodextrin
In the colourless transparent solution that step (1) obtains, weighs a certain amount of crosslinking agent and be added to constant pressure funnel
In the cyclodextrin solution of gelatinization, 50~70 DEG C are warming up to, quickly stirs 0.5-3h, mixing speed is 300~600rpm.Crosslinking agent
For epoxychloropropane, polyethylene glycol, Adipoyl Chloride, diphenyl carbonate, glutaraldehyde etc..The molar ratio of crosslinking agent and cyclodextrin is (5
~15): 1.The time for adding of crosslinking agent is 5~30min.
(3) cyclodextrin aggregates into microballoon
The emulsifier for weighing certain mass is dissolved in the oily phase of certain volume, and it is described to be stirring evenly and then adding into step (2)
In solution, quickly stir, mixing speed be 300~600rpm, react 2~8h after to get arrive beta-cyclodextrin cross-linked polymer microballoon.
Emulsifier be oil soluble emulsifying agent such as sorbitan fatty acid ester (Span series, as Span20, Span40, Span60,
Span80 etc.), polyethers nonionic surfactant (such as alkyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether series) or
Person's built surfactant such as SPAN surfactants and TWEEN Series (such as Tween20, Tween40, Tween60,
Tween80 etc.) surfactant mixture.
(4) purifying of the poly- microballoon of cyclodextrin
Resulting cyclodextrin microballoon is cooled to room temperature, adjusts pH to 6~8 with dilute HCL aqueous solution, then use acetone
Washing 2~4 times, except phase of deoiling, obtains white solid in water phase, crude product is obtained by filtration, dry 12 in 40~80 DEG C of baking ovens
~48h, obtains target product.The volume ratio of acetone and grease phase is 1:(2~8).The aperture of filter paper is 1~3 μm.
The above is only not to make limit in any form to the present invention to better embodiment of the invention
System, any simple modification that embodiment of above is made according to the technical essence of the invention, equivalent variations and modification,
Belong in the range of technical solution of the present invention.
Beneficial effects of the present invention
The oil displacement agents such as polymer, surfactant, alkali are widely used in tertiary oil recovery.The use of oil displacement agent is greatly improved
Oil recovery factor, but also cause Produced Liquid emulsification serious, great difficulty is brought to Produced Liquid processing.For traditional oil field
Sewage treatment, difficulty are remaining oil displacement agent, can be removed part oil displacement agent by the methods of flocculation, oxidation, biochemistry, but
It is the resource utilization that can not achieve oil displacement agent.
It is of the invention to provide a kind of insoluble cyclodextrin and recycle surface-active from surfactant flooding sewage
The insoluble cyclodextrin preparation purification of the method for agent, use is simple, cheap.Meanwhile providing cyclodextrin
Economic, the simple regeneration method of microballoon.The insoluble cyclodextrin that the present invention uses big, Binding ability with specific surface
By force, easily regeneration, it is repeatedly used a little.
Claims (4)
1. the recovery method of surfactant in surfactant flooding sewage, it is characterised in that follow the steps below:
Step 1: the synthesis of insoluble cyclodextrin microballoon；
Step 2: with surfactant in insoluble cyclodextrin microballoon removal surfactant flooding sewage；
Step 3: the regeneration of insoluble cyclodextrin and the recycling of surfactant.
2. according to the recovery method of surfactant in surfactant flooding sewage described in claim 1, it is characterised in that: described
The synthesis of insoluble cyclodextrin microballoon includes reversed emulsion polymerization, seed emulsion polymerization, dispersin polymerization in step 1
Method, surfactant- free emulsion polymerization；
(1) gelatinization of cyclodextrin
The sodium hydroxide for accurately weighing certain mass is placed in a beaker addition deionized water dissolving, be configured to mass concentration be 20~
35% solution, the cyclodextrin for weighing certain mass is stand-by, to equipped with constant pressure funnel, thermometer, agitating device three-necked flask
It is middle that the sodium hydrate aqueous solution and cyclodextrin prepared is added, start to stir, mixing speed is 120~300rpm, avoids cyclodextrin
It adheres to three-necked flask inner wall and cannot sufficiently dissolve gelatinization, keeping bath temperature is 30~40 DEG C, stirs 10~120min, obtains
Colourless transparent solution；Cyclodextrin is alpha-cyclodextrin, beta-cyclodextrin, and the serial cyclodextrin of gamma-cyclodextrin and modification is as methylated
Cyclodextrin, hydroxyethyl modified cyclodextrin, hydroxypropyl modified cyclodextrin, ethyl cyclodextrin, acetyl cyclodextrin, carboxymethyl ring paste
Essence, sulfuric ester cyclodextrin and phosphate cyclodextrin；The molar ratio of sodium hydroxide and cyclodextrin is (10~20): 1；
(2) crosslinking of beta-cyclodextrin
In the colourless transparent solution that step 1 obtains, a certain amount of crosslinking agent is weighed with constant pressure funnel and is added to gelatinization
In cyclodextrin solution, 50~70 DEG C are warming up to, quickly stirs 0.5-3h, mixing speed is 300~600rpm；Crosslinking agent is epoxy
Chloropropane, polyethylene glycol, Adipoyl Chloride, diphenyl carbonate, glutaraldehyde；The molar ratio of crosslinking agent and cyclodextrin is (5~15): 1；
The time for adding of crosslinking agent is 5~30min；
(3) cyclodextrin aggregates into microballoon
The emulsifier for weighing certain mass is dissolved in the oily phase of certain volume, is stirring evenly and then adding into step (2) described solution
In, quickly stir, mixing speed be 300~600rpm, react 2~8h after to get arrive beta-cyclodextrin cross-linked polymer microballoon.
3. according to the recovery method of surfactant in surfactant flooding sewage described in claim 1, it is characterised in that: described
In step (3) emulsifier be oil soluble emulsifying agent such as sorbitan fatty acid ester, polyethers nonionic surfactant or
The mixture of built surfactant such as SPAN surfactants and TWEEN Series surfactant；The HLB of emulsifier 3~
10；Emulsifier and the mass ratio of oily phase are 1:(19~49)；It is oily be mutually kerosene, diesel oil, gasoline, solvent naphtha, petroleum ether, alkane such as
Hexane, hexamethylene, heptane etc., aromatic hydrocarbons such as benzene, toluene, ethylbenzene, dimethylbenzene；Oily is mutually (1~4) with the volume ratio of water phase: 1；
(4) purifying of the poly- microballoon of cyclodextrin
Resulting cyclodextrin microballoon is cooled to room temperature, adjusts pH to 6~8 with dilute HCL aqueous solution, then use acetone washing
2~4 times, except phase of deoiling, obtain white solid in water phase, crude product be obtained by filtration, in 40~80 DEG C of baking ovens dry 12~
48h obtains target product.
4. according to the recovery method of surfactant in surfactant flooding sewage described in claim 1, it is characterised in that: described
The volume ratio of acetone and grease phase is 1:(2~8 in step 4)；The aperture of filter paper is 1~3 μm.
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| CN201811193768.XA CN109231406A (en) | 2018-10-15 | 2018-10-15 | The recovery method of surfactant in surfactant flooding sewage |
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| CN201811193768.XA CN109231406A (en) | 2018-10-15 | 2018-10-15 | The recovery method of surfactant in surfactant flooding sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172108A (en) * | 2019-05-14 | 2019-08-27 | 滨州学院 | The method of insoluble cyclodextrin and its composite material recycling hydrophobic polymer |
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| WO2009123073A1 (en) * | 2008-03-31 | 2009-10-08 | 株式会社環境工学 | Cyclodextrin composite material and process for production thereof |
| CN102276855A (en) * | 2011-06-17 | 2011-12-14 | 华东理工大学 | Preparation method of spherical cyclodextrin resin particles |
| CN102527345A (en) * | 2012-01-13 | 2012-07-04 | 大连理工大学 | Preparation method of Mn element-doped cyclodextrin polymer material with adsorptive separation function and application thereof |
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Application publication date: 20190118 |