CN102489488A - Process for recycling alkylbenzene sulfonate filter residues - Google Patents
Process for recycling alkylbenzene sulfonate filter residues Download PDFInfo
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- CN102489488A CN102489488A CN201110358361XA CN201110358361A CN102489488A CN 102489488 A CN102489488 A CN 102489488A CN 201110358361X A CN201110358361X A CN 201110358361XA CN 201110358361 A CN201110358361 A CN 201110358361A CN 102489488 A CN102489488 A CN 102489488A
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- solvent
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- alkyl benzene
- benzene sulfonate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Abstract
The invention relates to a process for recycling alkylbenzene sulfonate filter residues. The process for recycling the alkylbenzene sulfonate filter residues particularly comprises the following steps: performing solvent extraction for 1 to 2 hours by using the alkylbenzene sulfonate filter residues in petrochemical production as raw materials and C7 alkane with the distillation range of 83.5 to 105.5 DEG C as extraction solvent according to the mass ratio of the filter residues to the solvent of from 1:3 to 1:5; performing centrifugal solid-liquid separation; after the centrifugal separation, drying the filter residues at the high temperature of between 120 and 200 DEG C to serve as the renewable raw material of a filter aid; performing atmospheric distillation and separation on the extraction solution to obtain solvent oil and alkylbenzene sulfonate coarse products; and filtering the coarse products to obtain the alkylbenzene sulfonate. The sulfonate products produced by the treatment process has high quality, high product extraction rate and low production cost, can realize energy conservation and emission reduction and eliminate potential safety hazard and improves the working environment of workers in workshops. The whole system is easy to operate, so that the production device is safe, environment-friendly and stable in operation.
Description
Technical field
The present invention relates to process for treating alkyl benzene sulfonate filter slag in the petrochemical industry, particularly alkyl benzene sulfonate filter slag is handled alkylbenzenesulfonate and filter aid are reclaimed in the back from filter residue alkyl benzene sulfonate filter slag recovery processing technique.
Background technology
Alkylbenzenesulfonate is the employed a kind of good detersive of lubricating oil, and it produces a kind of filtration residue in process of production, contains 30%～60% alkylbenzenesulfonate in the filter residue, and the processing method that this filter residue is commonly used is to burn, and causes the wasting of resources.
" a kind of process for treating alkyl benzene sulfonate filter slag " proposed among the CN200510047964.2; Its technical scheme is: get in the petrochemical industry alkyl benzene sulfonate filter slag as raw material; Adopting boiling range is that 60 ℃～200 ℃ petroleum hydrocarbon solvent is as extraction solvent; Mol ratio 1:4～1:6 according to filter residue and solvent carries out solvent extraction; Carrying out centrifugal solid-liquid again separates; Solid phase is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 240 ℃～300 ℃ temperature, liquid phase is through separated solvent and alkylbenzenesulfonate.This treatment process operation is simple, makes full use of resource, recyclable alkylbenzenesulfonate and filter aid, and the alkylbenzenesulfonate after the recovery is up-to-standard can directly to be used, and the filter aid after the recovery uses through further handling renewable continuation.
There is following problem in this technology practical implementation process:
1, present, be that 60 ℃～200 ℃ petroleum hydrocarbon solvent is the C9 aromatic solvent naphtha as the boiling range of extraction solvent, the C9 aromatic solvent naphtha is a substituted benzene, though have very strong dissolubility, the smell is awful, and toxicity is very big;
2, this technology is in operation, and operating personnel will directly or indirectly contact with the C9 aromatic solvent naphtha in a plurality of operational sequences, like this operating personnel's health are had very big murder by poisoning;
The unusual thickness of filter residue was not easily separated when 3, alkyl benzene sulfonate filter slag was through the oil extraction of C9 aromatic solvent, centrifugation; And; With C9 aromatic solvent be extraction solvent in centrifugation and drying process easy blocking slag notch all; In the operation for fear of obstruction; What take is to shorten the centrifugation time and shorten drying machine material envelope length, and the C9 aromatic solvent of considerable part causes the loss of C9 aromatic solvent very big because of bad discharge of material envelope;
4, the liquid phase of carrying out with C9 aromatic solvent oil extraction alkyl benzene sulfonate filter slag obtaining after centrifugal solid-liquid separates is carried out decompression distillation, the interior liquid of distillation still is in the bumping state, the bad control of whole system all the time during decompression distillation;
5, to the solid phase of carrying out with C9 aromatic solvent oil extraction alkyl benzene sulfonate filter slag obtaining after centrifugal solid-liquid separates after high temperature drying is handled; The flue gas amount of carrying is very big in the tapping process; And dense aromatic hydrocarbons smell arranged, directly discharging is had any problem, and has potential safety hazard and environment is polluted.
Summary of the invention
The technical problem that the present invention will solve provides a kind of alkyl benzene sulfonate filter slag recovery processing technique; The sulfonate product quality that adopts this treatment process to produce is good, the product extract content high; Can realize energy-saving and emission-reduction and eliminate safe hidden trouble that improve workshop workman's working environment, whole system is operated easily; Not only reduced operation easier but also reduced production cost, can make process units safety, environmental protection, stable, operation stably.
Technical solution of the present invention is:
A kind of alkyl benzene sulfonate filter slag recovery processing technique, its special character is:
Get in the petrochemical industry alkyl benzene sulfonate filter slag as raw material, adopt boiling range be 83.5～105.5 ℃ C7 alkane solvent oil as extraction solvent, carry out solvent extraction according to the mass ratio 1:3～1:5 of filter residue and solvent, the extracting time is 1～2 hour; Carrying out centrifugal solid-liquid again separates; Solid phase after centrifugalizing is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 120～200 ℃, liquid phase obtains solvent naphtha and the thick product of alkylbenzenesulfonate through the normal pressure separated, and thick product gets alkylbenzenesulfonate after filtering.
Above-mentioned alkyl benzene sulfonate filter slag recovery processing technique, when solvent extraction, operating temperature is 20～40 ℃.
Above-mentioned alkyl benzene sulfonate filter slag recovery processing technique, when centrifugal solid-liquid separated, working speed was 2000～3000r/min, operating temperature is 20～40 ℃.
The present invention compares with former technology has following beneficial effect:
1, good product quality
Behind the former C9 aromatic solvent naphtha of C7 alkane solvent oil replacement, the sulfonate product quality index of producing is superior to the original product quality index;
2, the product extract content is high
Selection as extraction solvent, can improve the product extract content of alkylbenzenesulfonate to the better C7 alkane solvent of alkyl benzene sulfonate filter slag extraction rate was acquired oil;
3, C7 alkane solvent oil all compares steadily as the whole still-process of extraction solvent, and whole system is operated easily, and is optimized for atmospheric operation by former decompression operation; Not only reduced operation easier but also reduced production cost; And during separated, solvent recovering yield is higher, better effects if;
4, can realize energy-saving and emission-reduction
Optimize drying machine material envelope length, improve the extraction solvent rate of recovery, reduce the drying process on-the-spot exhaust gas volumn of slagging tap, avoid waste gas to produce and discharging, pollute natural ecological environment;
5, meet industrial requirement
Invest for a short time, satisfy the safety, environmental protection of device, stable, operation stably simultaneously;
6, with after the first separation of C7 alkane solvent oil dissolving alkyl benzene sulfonate filter slag process, resulting clear liquid is better than the C9 aromatic solvent naphtha far away, therefore can simplify processing step.
The specific embodiment
Embodiment 1:
Get in the 222g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C7 alkane solvent oil that adds the 888g boiling range and be 83.5～105.5 ℃ is as extraction solvent, carries out solvent extraction under 20～30 ℃, and the extracting time is 1 hour; Carrying out centrifugal solid-liquid again separates; The number of times that centrifugal solid-liquid separates is for once, and working speed is 2000～2300r/min, and operating temperature is 20～30 ℃, and solid phase particles tiny in the liquid phase is separated; Adopt drying machine to the raw material as filter aid regeneration after carrying out the high temperature drying processing under 120～140 ℃ of the filter residue after separating; Extract obtains solvent naphtha and the thick product of alkylbenzenesulfonate after the normal pressure separated, described solvent naphtha recycles, and the thick product of alkylbenzenesulfonate obtains alkylbenzenesulfonate after filtering.
Embodiment 2
Get in the 300g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C7 alkane solvent oil that adds the 1200g boiling range and be 83.5～105.5 ℃ is as extraction solvent, carries out solvent extraction under 20～30 ℃, and the extracting time is 1 hour; Carrying out centrifugal solid-liquid again separates; The number of times of Separation of Solid and Liquid is for once, and working speed is 2000～2300r/min, and operating temperature is 20～30 ℃, and solid phase particles tiny in the liquid phase is separated; Adopt drying machine to the raw material as filter aid regeneration after carrying out the high temperature drying processing under 120～140 ℃ of the filter residue after separating; The extracting liquid phase obtains solvent naphtha and the thick product of alkylbenzenesulfonate after often pressing separated, and described solvent naphtha recycles, and alkylbenzenesulfonate obtains alkylbenzenesulfonate after filtering.
Embodiment 3
Get in the 300g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C7 alkane solvent oil that adds the 1200g boiling range and be 83.5～105.5 ℃ is as extraction solvent, carries out solvent extraction under 20～30 ℃, and the extracting time is 2 hours; Carrying out centrifugal solid-liquid again separates; The working speed of Separation of Solid and Liquid is 2000～2300r/min, and operating temperature is 20～30 ℃, and solid phase particles tiny in the liquid phase is separated; Adopt drying machine to the raw material as filter aid regeneration after carrying out the high temperature drying processing under 120～140 ℃ of the filter residue after separating; The extracting liquid phase obtains solvent naphtha and the thick product of alkylbenzenesulfonate after often pressing separated, and described solvent naphtha recycles, and the thick product of alkylbenzenesulfonate obtains alkylbenzenesulfonate after filtering.
Embodiment 4:
Get in the 220g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C7 alkane solvent oil that adds the 1100g boiling range and be 83.5～105.5 ℃ is as extraction solvent, carries out solvent extraction under 25～35 ℃, and the extracting time is 1.5 hours; Carrying out centrifugal solid-liquid again separates; The number of times of Separation of Solid and Liquid is for once, and working speed is 2500～2700r/min, and operating temperature is 25～35 ℃, and solid phase particles tiny in the liquid phase is separated; Adopt drying machine to isolated filter residue raw material as filter aid regeneration after carrying out the high temperature drying processing under 160～180 ℃; Extract obtains solvent naphtha and the thick product of alkylbenzenesulfonate after the normal pressure separated, described solvent naphtha recycles, and the thick product of alkylbenzenesulfonate obtains alkylbenzenesulfonate after filtering.
Embodiment 5:
Get in the 300g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C7 alkane solvent oil that adds the 900g boiling range and be 83.5～105.5 ℃ is as extraction solvent, and 30～40 ℃ are carried out solvent extraction, and the extracting time is 1.5 hours; Carrying out centrifugal solid-liquid again separates; The number of times of Separation of Solid and Liquid is for once, and working speed is 2800～3000r/min, and operating temperature is 30～40 ℃, and solid phase particles tiny in the liquid phase is separated; Adopt drying machine to isolated filter residue raw material as filter aid regeneration after carrying out the high temperature drying processing under 120～200 ℃; Extract obtains solvent naphtha and the thick product of alkylbenzenesulfonate after the normal pressure separated, described solvent naphtha recycles, and the thick product of alkylbenzenesulfonate obtains alkylbenzenesulfonate after filtering.
Comparative Examples 1
Get in the 222g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C9 aromatic solvent naphtha that adds the 889.4g boiling range and be 60～200 ℃ carries out solvent extraction as extraction solvent, and the extracting time is 1 hour; Carrying out centrifugal solid-liquid again separates; Solid phase is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 240～300 ℃ of temperature, liquid phase is through separated solvent and alkylbenzenesulfonate.
Comparative Examples 2
Get in the 300g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C9 aromatic solvent naphtha that adds the 1200g boiling range and be 60～200 ℃ carries out solvent extraction as extraction solvent, and the extracting time is 1 hour; Carrying out centrifugal solid-liquid again separates; Solid phase is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 240～300 ℃ of temperature, liquid phase is through separated solvent and alkylbenzenesulfonate.
Comparative Examples 3
Get in the 300g petrochemical industry alkyl benzene sulfonate filter slag as raw material, the C9 aromatic solvent naphtha that adds the 1200g boiling range and be 60～200 ℃ carries out solvent extraction as extraction solvent, and the extracting time is 2 hours; Carrying out centrifugal solid-liquid again separates; Solid phase is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 240～300 ℃ of temperature, liquid phase is through separated solvent and alkylbenzenesulfonate.
Table 1 alkyl benzene sulfonate filter slag reclaims experimental result
Comparative Examples 1～3rd, adopting boiling range is that 60 ℃～200 ℃ C9 aromatic solvent naphtha is as extraction solvent; The mass ratio 1:4 of alkyl benzene sulphonate filter residue and extraction solvent carries out solvent extraction; After the centrifugation; The amount of resulting liquid phase is less than the amount of the solvent that adds, and the amount of resulting solid phase is greater than the amount of alkyl benzene sulfonate filter slag; See from experimental phenomena; Alkyl benzene sulfonate filter slag is the unusual thickness of alkyl benzene sulfonate filter slag during through the oil extraction of C9 aromatic solvent, centrifugation; Not easily separated; So after the centrifugation, the amount of resulting liquid phase is less than the amount of the solvent that adds, the amount of resulting solid phase is greater than the amount of alkyl benzene sulfonate filter slag;
Embodiment 1～3rd, and adopting boiling range is that 83.5～105.5 ℃ C7 alkane solvent oil is as extraction solvent; The mass ratio 1:4 of alkyl benzene sulphonate filter residue and extraction solvent carries out solvent extraction; After the centrifugation, extraction rate was acquired not in time prolongation and change, also not becoming with what of inventory; The amount of the resultant liquid phase in centrifugation back, solid phase is basic identical with the amount of the solvent naphtha that adds, alkyl benzene sulphonate filter residue, and wet filter residue is very easy to separate with extract, thickness, difficult obstruction when on centrifugation systems and drying system, slagging tap.
The extraction rate was acquired of comprehensive C7 alkane solvent oil and C9 aromatic solvent naphtha is seen; The dissolving extraction rate was acquired of C7 alkane solvent oil is better than the C9 aromatic solvent naphtha; And centrifugation back filter residue quality is better; Be difficult for stopping up the centrifuge feed opening, promptly C7 alkane solvent oil is compared with the C9 aromatic solvent naphtha, and C7 alkane solvent oil is more suitable for the extracting alkylbenzenesulfonate.
Table 2 reclaims the alkylbenzenesulfonate analysis result
It is thus clear that product quality is much better than the quality standard of product, as extraction solvent extracting alkylbenzenesulfonate, the alkylbenzenesulfonate product quality that obtains is more excellent with C7 alkane solvent oil.
Claims (3)
1. alkyl benzene sulfonate filter slag recovery processing technique is characterized in that:
Get in the petrochemical industry alkyl benzene sulfonate filter slag as raw material, adopt boiling range be 83.5～105.5 ℃ C7 alkane solvent oil as extraction solvent, carry out solvent extraction according to the mass ratio 1:3～1:5 of filter residue and solvent, the extracting time is 1～2 hour; Carrying out centrifugal solid-liquid again separates; Solid phase after centrifugalizing is carried out high temperature drying and is handled the raw material of back as filter aid regeneration under 120～200 ℃, liquid phase obtains solvent naphtha and the thick product of alkylbenzenesulfonate through the normal pressure separated, and thick product gets alkylbenzenesulfonate after filtering.
2. alkyl benzene sulfonate filter slag recovery processing technique according to claim 1 is characterized in that: when solvent extraction, operating temperature is 20 ℃～40 ℃.
3. alkyl benzene sulfonate filter slag recovery processing technique according to claim 1 is characterized in that: when centrifugal solid-liquid separates, and working speed 2000～3000r/min, operating temperature is 20 ℃～40 ℃.
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| CN201110358361XA CN102489488A (en) | 2011-11-14 | 2011-11-14 | Process for recycling alkylbenzene sulfonate filter residues |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873074A (en) * | 2012-09-15 | 2013-01-16 | 克拉玛依市金山石油化工有限公司 | Environment-friendly method for treating calcium petroleum sulfonate waste residues |
| CN103112874A (en) * | 2013-03-04 | 2013-05-22 | 京博农化科技股份有限公司 | Separating and recovering process for solid wastes |
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2011
- 2011-11-14 CN CN201110358361XA patent/CN102489488A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873074A (en) * | 2012-09-15 | 2013-01-16 | 克拉玛依市金山石油化工有限公司 | Environment-friendly method for treating calcium petroleum sulfonate waste residues |
| CN102873074B (en) * | 2012-09-15 | 2014-12-17 | 克拉玛依市金山石油化工有限公司 | Environment-friendly method for treating calcium petroleum sulfonate waste residues |
| CN103112874A (en) * | 2013-03-04 | 2013-05-22 | 京博农化科技股份有限公司 | Separating and recovering process for solid wastes |
| CN103112874B (en) * | 2013-03-04 | 2014-08-27 | 京博农化科技股份有限公司 | Separating and recovering process for solid wastes |
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