CN109439304A - Using C14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant - Google Patents
Using C14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant Download PDFInfo
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- CN109439304A CN109439304A CN201811292492.0A CN201811292492A CN109439304A CN 109439304 A CN109439304 A CN 109439304A CN 201811292492 A CN201811292492 A CN 201811292492A CN 109439304 A CN109439304 A CN 109439304A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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Abstract
C is used the present invention relates to a kind of14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant.Mainly solve the problems, such as that the stirring of viscous crude sulfonation process is difficult, coking is serious, sulfonic acid conversion ratio is low in synthesis heavy crude oil sulfonates surfactant technique.The process obtains dehydration viscous crude the following steps are included: 1) be carried out dehydrating first to viscous crude；2) by C14~C22Fatty acid mixes in proportion with above-mentioned dehydration viscous crude, after temperature reaches 65~85 DEG C of initial temperature, is passed through SO3And nitrogen mixed gas, it reacts 20~60 minutes；Initial reaction temperature rises, and mid-term temperature is fallen after rise, and natural constant temperature is added lye to 90-110 DEG C, after aging and neutralizes, and the mixed alcohol of preparation is added after neutralization, stirs evenly, obtains the displacement of reservoir oil heavy crude oil sulfonates surfactant of solid content 50%.This uses C14~C22Fatty acid synthesizes the technique of heavy crude oil sulfonates surfactant, and sulfonic acid high conversion rate, reaction coking is few, and synthetic product interface performance is good.
Description
Technical field
C is used the present invention relates to a kind of14~C22Fatty acid synthesizes the technique of heavy crude oil sulfonates surfactant, belongs to oil
The technical field of surfactant that field chemicals use.
Background technique
Oil field surfactant oil displacement mainly has heavy alkylbenzene sulfonate and petroleum sulfonate two major classes at present, on surface
While activating agent demand increases, raw material heavy alkyl benzene price but goes up year by year, and production cost also rises with it.It is fragrant in viscous crude
30% or more hydrocarbon content is suitable for producing heavy crude oil sulfonates surfactant oil displacement.Currently, heavy crude oil sulfonates do not have both at home and abroad
There is the relevant report in terms of being specifically applied to surfactant oil displacement.
It is sulfonation that the method for synthesis heavy crude oil sulfonates, which mainly uses oleum to be catalyzed sulfonation method, sulfur trioxide for sulfonating agent,
Agent method.At present when viscous crude Direct Sulfonation, reaction system stirring is difficult, and coking is serious, and sulfonic acid conversion ratio is low, and synthetic product is water-soluble
The technical requirements of oil field surfactant oil displacement are not achieved in difference.
Summary of the invention
The invention reside in overcome viscous crude in existing synthesis heavy crude oil sulfonates surfactant technique present in background technique
Sulfonation process coking is serious, sulfonic acid conversion ratio is low and the problem of synthetic product interface performance difference, and provides a kind of using C14~C22
The technique of fatty acid synthesis heavy crude oil sulfonates surfactant.This uses C14~C22It is living that fatty acid synthesizes heavy crude oil sulfonates surface
Property agent technique, sulfonic acid high conversion rate, reaction coking it is few, synthetic product interface performance is good.
The present invention solves the problems, such as that it can reach by following technical solution: a kind of to use C14~C22Fatty acid synthesis is thick
The technique of oily sulfosalt surfactant, comprising the following steps:
1) viscous crude is carried out dehydrating first, obtains dehydration viscous crude；
2) by C14~C22Fatty acid mixes in proportion with above-mentioned dehydration viscous crude, 65~85 DEG C of initial temperature is reached to temperature
Afterwards, it is passed through SO3And nitrogen mixed gas, it reacts 20~60 minutes；Initial reaction temperature rises, and mid-term temperature is fallen after rise, naturally permanent
Temperature arrives 90-110 DEG C, and lye is added after aging and neutralizes, the mixed alcohol of preparation is added after neutralization, stirs evenly, obtains solid content 50%
Displacement of reservoir oil heavy crude oil sulfonates surfactant.
By step (2) C14~C22Fatty acid is mixed with dehydration viscous crude in proportion again after mixing with heavy alkyl benzene；
The C14~C22Fatty acid and 300~400 DEG C of boiling range of heavy alkyl benzene mixed proportion are 1:1~1:3.
C14~C22It fatty acid and/or is mixed with 300~400 DEG C of boiling range of heavy alkyl benzene, the active group as viscous crude sulfonation
Point.C14~C22Fatty acid and viscous crude have preferable compatibility, can play dispersion activation well, solve viscous crude in sulphur
Change the technical issues of conducting heat uneven and coking in the process.
The present invention can have the following beneficial effects: this using C compared with above-mentioned background technique14~C22Fatty acid synthesis
The technique of heavy crude oil sulfonates surfactant, has the advantage that
(1) the heavy crude oil sulfonates product water solubility and interface performance that the present invention synthesizes are good, meet oil field surfactant oil displacement
The basic demand of product；
(2) heavy crude oil sulfonates process for sulfonation of the present invention is using primary charging, and viscous crude is without carrying out pre-treatment, after product is not necessarily to
Reason, reduces processing step, synthetic method is simple；
(3) sulfonic acid high conversion rate of the present invention, reaction coking are few；
(4) the heavy crude oil sulfonates surfactant that the present invention synthesizes is domestic initiation in surfactant oil displacement field, is had
Wide application prospect.
Specific embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
With C14~C22Fatty acid mix with dehydration viscous crude in 1:2 ratio, weigh the addition of 50g said mixture and be furnished with electric mixing
The four-hole boiling flask of the 250mL of device, constant speed stirring are mixed, four-hole boiling flask is placed in constant temperature oil bath；To reach 80 DEG C of initial temperature in bottle
Afterwards, SO is passed through in the dense ratio of 3.5% gas3And nitrogen mixed gas, it reacts 30 minutes；The quick blunt temperature of initial reaction stage, subsequent temperature are returned
It falls, to 96 DEG C, system viscosity increases natural constant temperature, but without obvious coking, latter temperature is fallen after rise, stops reaction, reaction time contracting
It is short.Ageing time 2h, weight gain is than being added 20% lye in 1.35 ratios of weight gain ratio and neutralizing, neutralization temperature is controlled 95 22%
DEG C, neutralize time 2h；16% n-butanol is added after neutralization and n-octyl alcohol presses the mixed alcohol that 1:1 is prepared, stirs evenly, consolidate
The displacement of reservoir oil of content 50% heavy crude oil sulfonates surfactant.The product good water solubility, 5% solution are uniform；Interface performance reaches
10-3The order of magnitude.
Embodiment 2
With C14~C22Fatty acid and 300~400 DEG C of boiling range of heavy alkyl benzene in 1:1 ratio mix work as viscous crude sulfonation
Property component, which mix with dehydration viscous crude in 1:2 ratio, weighs 50g addition is furnished with the 250mL of electric mixer four
Mouth flask, constant speed stirring, four-hole boiling flask are placed in constant temperature oil bath；After reaching 80 DEG C of initial temperature in bottle, by the dense ratio of 3.5% gas
Example is passed through SO3And nitrogen mixed gas, it reacts 30 minutes；The quick blunt temperature of initial reaction stage, subsequent temperature are fallen after rise, natural constant temperature to 96
DEG C, system viscosity increases, but without obvious coking, latter temperature is fallen after rise, stops reaction, and the reaction time shortens；Ageing time 2h increases
Again than 23%, sulfonic acid conversion ratio is improved；20% lye is added in 1.35 ratios of weight gain ratio to neutralize, neutralization temperature is controlled 95
DEG C, neutralize time 2h；16% n-butanol is added after neutralization and n-octyl alcohol presses the mixed alcohol that 1:1 is prepared, stirs evenly, consolidate
The displacement of reservoir oil of content 50% heavy crude oil sulfonates surfactant.
The product good water solubility, 5% solution are uniform；Its weak base ternary system equilibrium interfacial tension reaches 10-3MN/m quantity
Grade, meets the technical requirements of oil field displacement of reservoir oil type weak alkali surfactant.
Comparative example 1
Viscous crude is carried out dehydrating first, weighs four mouthfuls of burnings that 30g dehydration viscous crude is added to the 250mL equipped with electric mixer
Bottle, constant speed stirring, four-hole boiling flask are placed in constant temperature oil bath；After reaching 65~85 DEG C of initial temperature in bottle, in the dense ratio 2- of gas
7% is passed through SO3And nitrogen mixed gas, it reacts 20~60 minutes；Steep temperature rise is reacted, viscosity sharply increases, and stirring is more and more tired
Difficulty, coking are serious.
By above-described embodiment 1-2 and comparative example 1 as it can be seen that using C14~C22Fatty acid or C14~C22Fatty acid with evaporate
The technique and viscous crude Direct Sulfonation technique of heavy crude oil sulfonates surfactant are synthesized after the heavy alkyl benzene mixing that 300~400 DEG C of journey
The technical process reaction coking of comparison, the heavy crude oil sulfonates that the present invention synthesizes is few, sulfonic acid high conversion rate, product water solubility and interface
Performance is good, meets the basic demand of oil field surfactant oil displacement product；Using primary charging, viscous crude is without place before carrying out
Reason, product reduce processing step, synthetic method is simple and efficient without post-processing.
Claims (5)
1. a kind of use C14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant, it is characterised in that: including following
Step:
1) viscous crude is carried out dehydrating first, obtains dehydration viscous crude；
2) by C14~C22Fatty acid mixes in proportion with above-mentioned dehydration viscous crude, after temperature reaches 65~85 DEG C of initial temperature,
It is passed through SO3And nitrogen mixed gas, it reacts 20~60 minutes；Initial reaction temperature rises, and mid-term temperature is fallen after rise, and natural constant temperature arrives
90-110 DEG C, lye is added after aging and neutralizes, the mixed alcohol of preparation is added after neutralization, stirs evenly, obtains the drive of solid content 50%
Oil heavy crude oil sulfonates surfactant.
2. according to claim 1 a kind of using C14~C22Fatty acid synthesizes the technique of heavy crude oil sulfonates surfactant,
It is characterized by: step (2) C14~C22Fatty acid is mixed in a certain ratio with 300~400 DEG C of boiling range of heavy alkyl benzene
Afterwards, it is mixed in proportion with above-mentioned dehydration viscous crude, after temperature reaches 65~85 DEG C of initial temperature, is passed through SO3It is mixed with nitrogen
Gas reacts 20~60 minutes；Initial reaction temperature rises, and mid-term temperature is fallen after rise, and natural constant temperature adds after aging to 90-110 DEG C
Enter lye neutralization, the mixed alcohol of preparation is added after neutralization, stirs evenly, obtains the displacement of reservoir oil heavy crude oil sulfonates table of solid content 50%
Face activating agent.
3. according to claim 2 a kind of using C14~C22Fatty acid synthesizes the technique of heavy crude oil sulfonates surfactant,
It is characterized by: the C14~C22Fatty acid and 300~400 DEG C of boiling range of heavy alkyl benzene mixed proportion are 1:1~1:3.
4. according to claim 1 or 2 a kind of using C14~C22The work of fatty acid synthesis heavy crude oil sulfonates surfactant
Skill, it is characterised in that: the n-butanol and n-octyl alcohol that the mixed alcohol is 10%~20%, n-butanol and n-octyl alcohol mixed proportion are 5:
1~1:1.
5. according to claim 1 or 2 a kind of using C14~C22The work of fatty acid synthesis heavy crude oil sulfonates surfactant
Skill, it is characterised in that: C14~C22 fatty acid or after mixing with heavy alkyl benzene, is 1 with above-mentioned dehydration viscous crude mixed proportion:
1~1:5, ageing time 2h, weight gain in 1.1~1.5 ratios of weight gain ratio than being added in 20% lye 15~25% after aging
With；The SO3With the dense ratio 2-7% of gas of nitrogen mixed gas.
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| CN201811292492.0A CN109439304A (en) | 2018-11-01 | 2018-11-01 | Using C14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant |
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| CN201811292492.0A CN109439304A (en) | 2018-11-01 | 2018-11-01 | Using C14~C22The technique of fatty acid synthesis heavy crude oil sulfonates surfactant |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148821A (en) * | 1974-10-16 | 1979-04-10 | Stepan Chemical Company | Process for sulfonation |
| CN105419766A (en) * | 2015-12-25 | 2016-03-23 | 中国石油天然气集团公司 | Technology method of synthesizing heavy oil sulfonate surfactant with sulfonation promoter |
| CN105523968A (en) * | 2015-04-17 | 2016-04-27 | 陇东学院 | Synthesis method of heavy crude oil sulfonate surfactant |
-
2018
- 2018-11-01 CN CN201811292492.0A patent/CN109439304A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148821A (en) * | 1974-10-16 | 1979-04-10 | Stepan Chemical Company | Process for sulfonation |
| CN105523968A (en) * | 2015-04-17 | 2016-04-27 | 陇东学院 | Synthesis method of heavy crude oil sulfonate surfactant |
| CN105419766A (en) * | 2015-12-25 | 2016-03-23 | 中国石油天然气集团公司 | Technology method of synthesizing heavy oil sulfonate surfactant with sulfonation promoter |
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