CN1317364A - Process for preparing sodium alkylphenylsulfonate as surfactant for displacing oil - Google Patents
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Abstract
A process for preparing the sodium alkylphenylsulfonate as surfactant for displacing oil include cutting heavy alkylbenzene or refining it with argil, sulfonating said heavy alkylbenzene and light alkylbenzene as raw material by SO3 gas, neutralizing with NaOh solution, and using alcohol as cosolvent to obtain uniform product. Its advantages include high power to reduce the oil-water interface tension, performance stability and compatibility with polymer, high oil recovering rate.
Description
The present invention relates to a kind of preparation method of sodium alkylphenylsulfonateas as surfactant for displacing oil, belong to the oilfield chemical technology field, this surfactant is used for oil field ASP ternary composite driving and active water drive oil displacement agent, can increase substantially oil recovery factor.
The main oilfield (grand celebration, triumph etc.) in east China area has entered the later stage of secondary oil recovery at present, and main feature is high moisture and ultra-high water-containing, and crude output successively decreases, and economic benefit descends.In order to improve the recovery ratio in existing oil field, the developmental research of tertiary oil recovery technology is imperative.Generally believe that at present adopting chemical combined flooding to carry out tertiary oil recovery is than effective method, generally can make oil recovery factor improve more than 15%.Ternary composite driving is meant that alkali and surfactant and high molecular polymer (ASP system) carry out the displacement of reservoir oil after organically compound.It is to increase viscosity in aqueous solution by high molecular polymer on the one hand, improve the water drive sweep efficiency, be the interfacial tension that reduces profit by alkali and surfactant on the other hand, overcome capillary force the bundle of residual oil is fought, thereby can increase substantially oil recovery factor.The active water drive of alkali and surfactant (AS system) mainly is by reducing the interfacial tension of profit, improving displacement efficiency.
The medicament of most critical is a surfactant in the combination flooding, and the basic demand that is fit to do the surfactant of ternary composite driving is: can make oil water interfacial tension reach ultralow (10
-3The mN/m order of magnitude) below; The working concentration of surfactant＜0.6% (wt), and in the surfactant concentration scope of broad, all can form ultralow interfacial tension, the composition of surfactant is single relatively, guarantees not take place in displacement process serious chromatographic isolation; Can excellent compatibility be arranged with alkali and polymer; Ternary composite driving improves more than 20% in the oil displacement efficiency on the rock core than water drive; Require the production technology of surfactant reliable simultaneously, constant product quality, reasonable price.
The surfactant oil displacement of former studies mainly stresses prescription and auxiliary agent at research several types surfactant, has ignored the performance of single type surfactant, and the single agent of most of former studies can only make oil water interfacial tension reach 10
-2The mN/m order of magnitude, thereby can only just can reach the good interface activity by the surfactant compound more than two types.As application number is 99106077.6, name is called " benzene sulfonamide salt surfactant; its preparation method and the application in tertiary oil recovery thereof ", wherein use heavy alkylbenzene sulfonate and petroleum carboxylate composite, and for example composite etc. with petroleum sulfonate and non-ionic surface active agent, although the surfactant after composite can make oil water interfacial tension reach ultralow, but because surfactant types difference, variant on the structure, the compound surfactant system in the combination flooding oil displacement process because difference such as absorption loss etc., the chromatographic isolation phenomenon can appear, destroy original optimum formula system, thereby cause effect of field application poor.In addition, though the single agent interfacial activity that has is better, it is poor to be mixed with the compound system rear stability, as the plant carboxylic acid salt surfactant, the three-component compound system interfacial tension reaches ultralow can only be kept several days, just raise afterwards, caused the compound system oil displacement efficiency not reach expected effect.In addition, the surfactant interface activity that has is good under high-alkalinity, and poor activity under the low alkaline concentration, interfacial tension do not reach ultralow (10
-3The mN/m order of magnitude), thus compound system can only be in the down displacement of reservoir oil of high injection alkali concn (1.2-1.5wt%), as ORS-41, WPS surfactant.Because alkali can generate dirty crystallization with calcium, the magnesium plasma reaction in the stratum, or can generate the crystallization of sial dirt with clay mineral (kaolin, feldspar, imvite) effect in the stratum, the oil reservoir hole is stopped up in these dirty crystallization meetings, the spread area of displacing agent is reduced, recovery ratio reduces, and oil reservoir is come to harm, it is high more to inject alkali concn, big more to the injury of oil reservoir.Therefore if ultralow interfacial tension alkali concn scope can be moved to low alkaline concentration, it is favourable using for ternary composite driving.
Surfactant oil displacement needs that cost is low, production technology is reliable, the surfactant cost is low not only to be embodied in raw material and the synthesis technique cost is low, prior should being embodied in reduced working concentration and promptly reduced consumption and reduce cost, this point is out in the cold in research in the past, or does not reach requirement.
Purpose of the present invention is to prepare a kind of surfactant oil displacement of single type, and the interfacial activity of single agent is good, and the anti-dilution capacity of activating agent is strong, and working concentration is low, can make oil water interfacial tension reach ultralow (10 at broad and lower alkali concn scope
-3The mN/m order of magnitude), compound system good stability, oil displacement efficiency height.
Another object of the present invention is to provide a kind of preparation technology simple, practical, the displacement of reservoir oil that cost the is low method of alkyl benzene sulfonate surfactant.
The preparation method of the sodium alkylphenylsulfonateas as surfactant for displacing oil that the present invention proposes may further comprise the steps:
(1) heavy alkyl benzene is cut, cutting temperature is 360-430 ℃, to keep C
13-C
28Cut is standby, or the heavy alkyl benzene carclazyte is made with extra care, promptly 110-120 ℃ down with carclazyte adsorption reaction 1-2 hour, it is standby to filter out adsorbate and impurity;
(2) adopting above-mentioned heavy alkyl benzene cutting material or the clay-filtered material of heavy alkyl benzene and light alkylbenzene is raw material, and the 1-30wt% that wherein light alkylbenzene accounts for the raw material total amount uses SO
3Gas carries out sulfonation, SO to raw material
3The concentration of gas is 5-8%, SO
3With the mol ratio of alkylbenzene be 1.05-1.3: 1, obtain alkyl benzene sulphonate, sulfonic acid is aging, and ageing time is 0.5-1 hour;
(3) to of the NaOH solution neutralization of abovementioned alkyl benzene sulfonic acid with 15-35%, neutral temperature 35-65 ℃, make product P H value be 7-9, the alcohol that adds 5-20wt% in N-process is made cosolvent, and the even product that obtains is sodium alkylphenylsulfonateas as surfactant.
Light alkyl benzene material used in the said method adopts linear alkylbenzene (LAB) or branched alkylbenzene, and carbon chain lengths is C
8-C
13Used cosolvent alcohol is one or two or more kinds the mixture in isopropyl alcohol, n-butanol or the ethylene glycol.
Above-mentioned raw materials can adopt single alkylbenzene as raw material, synthetic single type surfactant, and its performance reaches above-mentioned requirements.
Heavy alkyl benzene described in the above-mentioned steps (1) and light alkyl benzene material can carry out sulfonation separately, neutralize after the sulfonic acid that obtains mixes by a certain percentage and obtain product, or heavy alkyl benzene and light alkyl benzene material carried out separately mixing by a certain percentage after sulfonation, the neutralization obtain product.In addition, also can be with heavy alkyl benzene with gently alkyl benzene material carries out sulfonation after mixing in certain equivalent ratio, neutralization obtains product.But the shared content based on crude composition of wherein light alkylbenzene adjusts, and is generally 1-30% (wt).
The sodium alkylphenylsulfonateas as surfactant of the single type of method for preparing, active matter effective content are 50-65%, and properties of product are tested every index and reached the requirement of combination flooding to surfactant.And surfactant can have the good interface activity under lower concentration (0.025-0.3wt%), and broad and lower alkali concn scope make oil water interfacial tension reach ultralow (10
-3The mN/m order of magnitude), can reduce dosage of surfactant and injection alkali concn.Major advantage of the present invention: 1. the present invention adopts single alkylbenzene as raw material, and raw material sources are wide, cost is low, and distribute by composition and carbochain in the true boiling-point (TBP) cutting control heavy alkyl benzene, itself and crude oil carbochain are formed be complementary, the interfacial activity of product is strong, good stability.2. after heavy alkyl benzene cutting or the refinement treatment, can adopt SO
3Membrane-type sulfonation, process for sulfonation is simple, and the sulfonation process side reaction is few, no coupling product, sulfonation conversion ratio height, the product that obtains need not post processing, easily heavy industrialization.3. sulfonation is synthetic separately for heavy alkyl benzene and light alkylbenzene, and the based on crude characteristic is allocated mixing again, also can mix earlier, and it is synthetic to carry out sulfonation again, and process route is versatile and flexible.4. light alkylbenzene can adopt straight or branched structure alkylbenzene, and raw material sources are widened.5. add the flowability that alcohol helps improving sintetics, uniformity, the stability of raising product helps the use of product.6. this sodium alkylphenylsulfonateas as surfactant interfacial activity under the low alkaline concentration scope is good, can reduce and inject alkali concn (1. below 0%), thereby minimizing is to the injury of oil reservoir.
Introduce embodiments of the invention below.
Description of drawings:
Fig. 1 is the dynamic instantaneous interfacial tension of the sodium alkyl benzene sulfonate of embodiment four preparations.
Embodiment 1:
Employing is a raw material by heavy alkyl benzene and the light alkylbenzene that Fushun Xi Huachang produces, the boiling range scope of heavy alkyl benzene is 300-480 ℃, its composition is mainly linear alkylbenzene (LAB), branched alkylbenzene and dioxane benzene, take the true boiling-point (TBP) cutting process, cutting temperature is 410 ℃ (are about 260 ℃ in temperature under the 0.098Mpa vacuum), keeps C
13-C
28Cut.With the independent sulfonation of heavy alkyl benzene of cutting, SO
3Concentration is 7%, SO
3With the mol ratio of alkylbenzene be 1.18: 1, obtain the sulfonated products alkyl benzene sulphonate after, aging 0.6 hour.To light alkylbenzene also sulfonation separately, SO
3With the mol ratio of light alkylbenzene be 1.08: 1, reaction condition is the same, mixes heavy alkylbenzene sulfonic acid and light alkyl benzene sulphonate in proportion according to the equivalent of selected crude oil, wherein light alkyl benzene sulphonate accounts for the 12wt% of total amount.To above-mentioned mixed alkyl benzene sulfonic acid with the neutralization of 30% NaOH solution, 50 ℃ of neutral temperatures, the isopropyl alcohol that adds 15wt% in N-process is made cosolvent, makes product P H value reach 7-9, and the even product that obtains is sodium alkylphenylsulfonateas as surfactant (active matter effective content 50-60%).The interfacial tension test result of product sees Table 1.Surfactant is mixed with working concentration 0.025-0.3% (wt) with oil recovery factory, oil field formation water return water, and interfacial tension is 2 hours stable equilibrium's values of test.
Test condition:
Temperature: 45 ℃
Crude oil: grand celebration oil recovery factory electric dehydration crude oil
Preparation water: oil recovery factory's return water
Tester: TEXAS MODEL-500 spinning drop interfacial tensiometer
Table 1 1SY sample evaluation result, grand celebration four factory's oil/water
| ????0.05 | 8.35×10 -3 | 4.71×10 -3 | 1.70×10 -3 | 1.70×10 -2 | 3.84×10 -2 |
| ????0.1 | 1.65×10 -2 | 4.52×10 -3 | 5.16×10 -3 | 6.44×10 -3 | 1.44×10 -2 |
| ????0.2 | 2.31×10 -2 | 5.50×10 -3 | 1.93×10 -3 | 1.91×10 -3 | 1.02×10 -2 |
| ????0.3 | 3.62×10 -2 | 2.52×10 -2 | 7.11×10 -3 | 2.89×10 -3 | 6.88×10 -3 |
Embodiment 2:
The alkyl benzene material that adopts is identical with example 1, wherein the heavy alkyl benzene cutting temperature is 390 ℃, with heavy alkyl benzene cutting material and the sulfonation respectively of light alkylbenzene, the sulfonating reaction condition is identical with example 1, heavy alkylbenzene sulfonic acid and light alkyl benzene sulphonate are mixed in proportion, and wherein light alkyl benzene sulphonate (straight chain) accounts for the 5wt% of gross weight.Neutrality condition is identical with example 1, and wherein cosolvent adds isopropyl alcohol and the 4wt% ethylene glycol of 11wt%, the even product sodium alkylphenylsulfonateas as surfactant that obtains (active matter effective content 50-60%), and the interfacial tension test result of product sees Table 2.Table 2 1SY-1 sample evaluation result, grand celebration three factory's oil/water
Embodiment 3:
The heavy alkyl benzene raw material that adopts is identical with example 2, light alkylbenzene is a branched alkylbenzene, heavy alkyl benzene cutting material and light alkylbenzene are distinguished sulfonation, neutralization, sulfonation and neutralization reaction condition are identical with example 1, heavy alkylbenzene sulfonic acid sodium and light sodium alkyl benzene sulfonate are mixed in proportion, and light sodium alkyl benzene sulfonate (side chain) accounts for the 8wt% of total amount.The interfacial tension test result of product sees Table 3.Table 3 1SY-2 sample evaluation result, grand celebration four factory's oil/water
Embodiment 4:
The alkyl benzene material and the heavy alkyl benzene cutting temperature that adopt are identical with embodiment 1, and heavy alkyl benzene cutting material is mixed earlier in proportion with light alkylbenzene, and wherein light alkylbenzene (straight chain) accounts for the 12wt% and the 18wt% of total amount.Carry out sulfonation and neutralization, sulfonating reaction SO again
3With the mol ratio of alkylbenzene mixture be 1.12: 1, the neutralization reaction condition is identical with embodiment 1, the sodium alkylphenylsulfonateas as surfactant interfacial tension test result that obtains sees Table 4 and table 5.
Prepared sodium alkylbenzene and alkali and polymer HPAM are mixed with ternary system, and the dynamic instantaneous INTERFACIAL TENSION CURVES of compound system oil water interfacial tension in minute 120 minutes seen Fig. 1.Table 4 2SY sample evaluation result, grand celebration four factory's oil/water
Table 5 2SY-a sample evaluation result, grand celebration three factory's oil/water
Table 1-table 5 commerical test sintetics evaluation result shows, adopt heavy alkyl benzene distillation cutting raw material and light alkylbenzene, the synthetic sodium alkyl benzene sulfonate of sulfonation can make grand celebration four factories, three factories oil/water termination tension force reach ultralow, the compatibility of activating agent and alkali is good, surfactant concentration one regularly ultralow interfacial tension alkali concn scope reaches the 0.5-0.6% width, and reduce the ultralow interfacial tension zone with surfactant concentration and move, help reducing the injection alkali concn to the low alkaline concentration direction.The anti-dilution property of surfactant is strong, and low interfacial tension surfactant concentration scope is 0.025%-0.3%.The sintetics stable performance, good fluidity.Simple, the easy row of synthesis technique flow process.But in mixing after two kinds of independent sulfonation of alkyl benzene material and the equivalent of the synthetic surfactant of technology flexible modulation, and two kinds of alkyl benzene materials mixing are earlier carried out in the sulfonation and technology again, because material viscosity is little, make that the sulfonating reaction process is easier carries out, make the more following current of preparation process material.
From the dynamic instantaneous INTERFACIAL TENSION CURVES of three-component compound system of the surfactant of Fig. 1 and alkali, polymer as can be known, synthetic sodium alkyl benzene sulfonate not only equilibrium interfacial tension reaches ultralow, and dynamic instantaneous interfacial tension can reach 10 in the short time (30 minutes)
-4-10
-5The mN/m order of magnitude, this is very favourable for starting residual oil in the oil displacement process.
Embodiment 5:
Adopting clay-filtered material of heavy alkyl benzene and light alkylbenzene is raw material, and the boiling range scope of heavy alkyl benzene is 300-480 ℃, with heavy alkyl benzene and the sulfonation respectively of light alkylbenzene, to the clay-filtered material sulfonation of heavy alkyl benzene, used SO
3Concentration is 7%, SO
3With the mol ratio of alkylbenzene be 1.1: 1, to the used SO of light alkylbenzene sulfonation
3With the mol ratio of alkylbenzene be 1.18: 1, obtain the sulfonated products alkyl benzene sulphonate after, aging 0.8 hour.Equivalent according to selected crude oil mixes heavy alkylbenzene sulfonic acid and light alkyl benzene sulphonate in proportion, and wherein light alkyl benzene sulphonate accounts for the 18wt% of total amount.To above-mentioned mixed alkyl benzene sulfonic acid with the neutralization of 27% NaOH solution, 45 ℃ of neutral temperatures, the isopropyl alcohol that adds 15wt% in N-process is made cosolvent, makes product P H value reach 8, and the even product that obtains is sodium alkylphenylsulfonateas as surfactant (active matter effective content 50-60%).The interfacial tension test result of product sees Table 6.Surfactant is mixed with working concentration 0.1% (wt) with oil recovery factory, oil field return water, and interfacial tension is 2 hours stable equilibrium's values of test.Test condition is identical with embodiment 1.
Embodiment 6:
Raw material and preparation process are identical with embodiment 5, and that different is the used SO of sulfonation
3Concentration is 5wt%.Test condition is identical with embodiment 5.
Embodiment 7:
Raw material and preparation process are identical with embodiment 5, during the clay-filtered material sulfonation of different is heavy alkyl benzene, and used SO
3With the mol ratio of alkylbenzene be 1.22: 1.Test condition is identical with embodiment 5.
Embodiment 8:
Raw material is identical with embodiment 5, and heavy alkyl benzene and light alkylbenzene are mixed the back sulfonation, and wherein light alkylbenzene accounts for the 20wt% of total amount, and the sulfonation condition is with embodiment 7, used SO during sulfonation
3With the mol ratio of alkylbenzene mixture be 1.15: 1.Neutrality condition is identical with embodiment 5.Test condition is identical with embodiment 5.
Embodiment 9:
Raw material and preparation process are identical with embodiment 8, and that different is the 25wt% that light alkylbenzene accounts for total amount.Test condition is identical with embodiment 5.
Embodiment 10:
Raw material and preparation process are identical with embodiment 8, and that different is the 12wt% that light alkylbenzene accounts for total amount.Test condition is identical with embodiment 5.
Embodiment 11:
Raw material and preparation process are identical with embodiment 8, and different is isopropyl alcohol and the 8wt% ethylene glycol that the N-process cosolvent adds 12wt%.Test condition is identical with embodiment 5.
Embodiment 12:
Raw material and preparation process are identical with embodiment 8, and different is the n-butanol that the N-process cosolvent adds 15wt%.Test condition is identical with embodiment 5.
Embodiment 13:
Raw material and preparation process are identical with embodiment 8, and different is n-butanol and 6% ethylene glycol that the N-process cosolvent adds 10wt%.Test condition is identical with embodiment 5.
Embodiment 14:
Raw material and sulfonation neutralization reaction condition are identical with embodiment 5, and different is with after clay-filtered material of heavy alkyl benzene and the light independent sulfonation of alkylbenzene, neutralizing, and heavy alkylbenzene sulfonic acid sodium and light sodium alkyl benzene sulfonate are mixed according to the above ratio.Test condition is identical with embodiment 5.Table 6 3SY series of samples evaluation result, grand celebration four factory's oil/water
Embodiment 15
The sodium alkyl benzene sulfonate product that obtains from embodiment 1 and embodiment 4 becomes ternary system with alkali and polymer formulation, investigates the time dependent long-time stability of ternary system interfacial tension.ASP system formulation (surfactant 0.2%wt, NaOH 0.8%wt, HPAM 1200ppm) with the preparation of grand celebration formation water, preserve down at 45 ℃, the variation of test different time compound system interfacial tension equilibrium valve, embody the time dependent long-time stability of interfacial tension of ternary system, the results are shown in Table 7, contrasted the time dependent stability of interfacial tension of the three-component compound system of plant carboxylic acid salt surfactant and heavy alkylbenzene sulfonic acid sodium and the composite rear surface of plant carboxylic acid salt activating agent in the table simultaneously.Test condition is with example 1.Test data shows that this ternary system still keeps ultralow 3 months inner boundary equalization of strain values, and the system good stability is described, the sodium alkyl benzene sulfonate that is synthesized and the compatibility of polymer are good.
The estimation of stability of table 7 ternary system (interfacial tension mN/m)
| Time (my god) | 0 | ?7 | ?15 | ?30 | ?45 | ?60 | ?75 | ?90 |
| ?1SY | ?6.44× ?10 -3 | ?2.04× ?10 -3 | ?2.46× ?10 -3 | ?2.50× ?10 -3 | 3.66× 10 -3 | ?3.87× ?10 -3 | ?2.69× ?10 -3 | ?4.12× ?10 -3 |
| ?2SY | ?7.22× ?10 -4 | ?8.55× ?10 -4 | ?6.65× ?10 -4 | ?6.89× ?10 -4 | 7.10× 10 -4 | ?6.66× ?10 -4 | ?7.06× ?10 -4 | ?6.98× ?10 -4 |
| Plant carboxylic acid salt | ?1.76× ?10 -3 | ?4.60× ?10 -2 | ?2.46× ?10 -2 | ?1.08× ?10 -1 | 1.86× 10 -1 | ?2.27× ?10 -1 | ?2.98× ?10 -1 | ?3.32× ?10 -1 |
| Heavy alkylbenzene sulfonic acid sodium+plant carboxylic acid salt | ?8.41× ?10 -4 | ?1.16× ?10 -2 | ?3.20× ?10 -2 | ?3.56× ?10 -2 | 5.72× 10 -2 | ?7.46× ?10 -2 | ?1.01× ?10 -1 | ?1.19× ?10 -1 |
Table 7 data show that its ternary system equilibrium interfacial tension of alkylbenzenesulfonate of the present invention's preparation changes not quite in time, and the ternary system equilibrium interfacial tension all maintains ultralow scope in 90 days.And that the ternary system equilibrium interfacial tension of plant carboxylic acid salt changes in time is very big, and the system interfacial tension just rises to 10 by ultralow after 7 days
-2The mN/m order of magnitude, it is 10 that 30 days rear interface tension force rises to again
-1The mN/m order of magnitude illustrates the elongated in time very fast reduction of ternary system interfacial activity of plant carboxylic acid salt, even disappears, and shows this activating agent system poor stability.Its ternary system equilibrium interfacial tension of surfactant after heavy alkylbenzene sulfonic acid sodium and plant carboxylic acid salt are composite changes also bigger in time, and the system interfacial tension rises to 10 by ultralow after 7 days
-2The mN/m order of magnitude, it is 10 that 75 days rear interface tension force rises to again
-1The mN/m order of magnitude, interfacial activity disappears substantially, shows this composite reactive agent system poor stability.Need 3 months to six months because oil displacement process is injected into output from oil displacement agent, thereby back two class oil displacement systems can not be used effectively at the scene.
Embodiment 16
For the performance of the alkyl benzene sulfonate surfactant that the present invention prepares is described better, the sodium alkyl benzene sulfonate product that embodiment 1 and embodiment 4 are obtained becomes ternary system with alkali and polymer formulation, has carried out ternary system laboratory core oil displacement test.Rock core adopts clay gel knot quartz sand and Berea rock core, ASP ternary system prescription is 1.0wt%NaOH+0.3wt% surfactant 1SY+1200ppm HPAM and 1.0wt%NaOH+0.2wt% surfactant 2SY+1200ppm HPAM, HPAM produces for the grand celebration auxiliary reagent factory, molecular weight 1,300 ten thousand, degree of hydrolysis 25%.At grand celebration four factory's oil, water, injecting scheme: 0.3PV ternary composite driving slug, follow-up 0.3PV polymer protection slug (1200ppm HPAM).Result of the test sees Table 8.In the table data as seen, sodium alkyl benzene sulfonate 1SY and 2SY that commerical test is synthetic, the oil displacement efficiency of its ASP ternary system improves than water drive and is respectively 24.86% and 23.13%.
Table 8 commerical test product A SP system oil displacement test result
| Parameter | Rock core length cm | Water is surveyed permeability μ 10 -3μm 2 | Oil saturation % | Waterflood recovery efficiency factor % | Chemical flooding yield % | Improve recovery ratio |
| ?1SY | ??8.075 | ??1260.09 | ???63.34 | ????33.09 | ????57.95 | ????24.86 |
| ?2SY | ??7.52 | ????94.95 | ???76.24 | ????32.78 | ????55.91 | ????23.13 |
Claims (3)
1, a kind of preparation method of sodium alkylphenylsulfonateas as surfactant for displacing oil, described preparation method may further comprise the steps:
(1) heavy alkyl benzene is cut, cutting temperature is 360-430 ℃, to keep C
13-C
28Cut is standby, or the heavy alkyl benzene carclazyte is made with extra care, promptly 110-120 ℃ down with carclazyte adsorption reaction 1-2 hour, it is standby to filter out adsorbate and impurity;
(2) adopt a kind of in above-mentioned heavy alkyl benzene cutting material or the clay-filtered material of heavy alkyl benzene, and light alkylbenzene is raw material, the 1-30wt% that wherein light alkylbenzene accounts for the raw material total amount uses SO
3Gas carries out sulfonation, SO to raw material
3The concentration of gas is 5-8%, SO
3With the mol ratio of alkylbenzene be 1.05-1.3: 1, obtain alkyl benzene sulphonate, sulfonic acid is aging, and ageing time is 0.5-1 hour;
(3) to of the NaOH solution neutralization of abovementioned alkyl benzene sulfonic acid with 15-35%, neutral temperature 35-65 ℃, make product P H value be 7-9, the alcohol that adds 5-20wt% in N-process is made cosolvent, and the even product that obtains is sodium alkylphenylsulfonateas as surfactant.
2, preparation method as claimed in claim 1 is characterized in that, wherein said light alkyl benzene material adopts linear alkylbenzene (LAB) or branched alkylbenzene, and carbon chain lengths is C
8-C
13
3, preparation method as claimed in claim 1 is characterized in that, wherein said cosolvent alcohol is one or two or more kinds the mixture in isopropyl alcohol, n-butanol or the ethylene glycol.
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| DE102011083116A1 (en) | 2010-09-21 | 2012-05-10 | China Petroleum & Chemical Corporation | Catalyst for the hydrogenation of unsaturated hydrocarbons, production and use thereof |
| CN103193688A (en) * | 2013-04-17 | 2013-07-10 | 中国石油天然气股份有限公司 | Hexadecyl xylene sulfonate industrial product and production method thereof, surfactant and application thereof |
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| CN107298971A (en) * | 2016-04-14 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of high temperature resistant heavy alkylbenzene sulfonate system and preparation method thereof |
| CN107298971B (en) * | 2016-04-14 | 2020-01-17 | 中国石油化工股份有限公司 | High-temperature-resistant heavy alkylbenzene sulfonate system and preparation method thereof |
| CN110938022A (en) * | 2019-11-04 | 2020-03-31 | 广东丽臣奥威实业有限公司 | Preparation method of improved sodium dodecyl benzene sulfonate solution |
| CN117049985A (en) * | 2023-08-11 | 2023-11-14 | 安徽金桐精细化学有限公司 | High-carbon sodium alkylbenzenesulfonate and preparation method and application thereof |
| CN117049985B (en) * | 2023-08-11 | 2024-08-09 | 安徽金桐精细化学有限公司 | High-carbon sodium alkylbenzenesulfonate and preparation method and application thereof |
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