CN102731472A - Apparatus for reducing arene extraction solvent sulfolane, and application thereof - Google Patents
Apparatus for reducing arene extraction solvent sulfolane, and application thereof Download PDFInfo
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- CN102731472A CN102731472A CN2012102230136A CN201210223013A CN102731472A CN 102731472 A CN102731472 A CN 102731472A CN 2012102230136 A CN2012102230136 A CN 2012102230136A CN 201210223013 A CN201210223013 A CN 201210223013A CN 102731472 A CN102731472 A CN 102731472A
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- solvent
- tetramethylene sulfone
- sulfolane
- resin
- tower
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Abstract
The invention relates to an apparatus used for reducing an arene extraction solvent sulfolane, and an application thereof. The apparatus has a structure that: an arene extraction apparatus lean solvent outlet port is connected to a flow meter (1); the flow meter (1) is connected to a solvent heat exchanger (2); the solvent heat exchanger (2) is connected to a solvent cooling device (3); the solvent cooling device (3) is connected to a filter (4); the filter (4) is connected to a resin exchange tower (5); the resin exchange tower (5) is connected to another channel of the solvent heat exchanger (2); the other channel of the solvent heat exchanger (2) is connected to the other port of the arene extraction apparatus; and alkalescence anion-exchange resin is installed in the resin exchange tower. Under the conditions that the space velocity is 1.5-9.0h<->, and the temperature is 40-60 DEG C, after the processing of the apparatus, the pH value of a sulfolane solvent is increased to above 6.0, the chromaticity is reduced to 0-0.5, a chlorine ion content is reduced to below 1mg/kg, an equipment corrosion inhibition efficiency is 81.5%, and a maintenance period of the arene extraction apparatus reaches 3 years.
Description
Technical field
The present invention relates to a kind of full scale plant and application method that reduces aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment corrosion; Remove cl ions in the tetramethylene sulfone more specifically to a kind of use anionite-exchange resin, reduce full scale plant and the application method of tetramethylene sulfone the extraction plant equipment corrosion.
Background technology
Aromatic Hydrocarbon United Plant needs at the revivifier position continuous supplementation zellon for guaranteeing the reforming reaction water chloride balance, and additional zellon a part of form with cl ions in reaction process gets into downstream unit with reformate.One deheptanizer top extraction C wherein
6, C
7Component gets into tetramethylene sulfone extracting unit processing treatment.In the processing treatment material process, the Cl that upstream device is brought into
-The circulation accumulation is stronger to extraction system line equipment corrodibility to the tetramethylene sulfone lean solvent in solvent sulfolane, and the extraction plant high-temperature heat-exchanging just needed maintenance in about 6 months or changed once, did not reach 2 years of design.During the switching heat-exchanger of sulfolane unit parking maintenance/more, reformer need reduce load 20% operation, has influenced the benefit of whole Aromatic Hydrocarbon United Plant.Cl in the extraction solvent tetramethylene sulfone
-Be accumulated to 5 ~ 7mg/kg, compelled discharge unit tetramethylene sulfone is also added fresh tetramethylene sulfone, has strengthened running cost.
Remove cl ions in the lean solvent tetramethylene sulfone, reduce tetramethylene sulfone extraction system equipment corrosion, eliminate safe hidden trouble; Reduce running cost; The implement device LP reduces running cost, safe operation at full capacity to whole Aromatic Hydrocarbon United Plant, and it is significant to increase economic efficiency.
CN2709446Y discloses the refining plant of aromatic hydrocarbons extraction solvent sulfolane; By fresh feed pump, accurate filter, one-level adsorption tanks, secondary absorption jar and between connect to form; The 3A of adsorption tanks middle and upper part filling 10 ~ 30% or 5A molecular sieve, middle part filling 50 ~ 70% strong alkali resins, bottom filling 5 ~ 20% carclazytes purify the H that the tetramethylene sulfone degraded produces
2SO
3, and organic acidity material such as sulfonic acid class.But the anti-organic contamination ability of using of strong alkali resin, 3A or 5A regenerating molecular sieve difficulty, carclazyte is acid, causes the tetramethylene sulfone deterioration, reduces the purge amount of unit resin to tetramethylene sulfone.
CN1230545A discloses the renovation process of inferior sulfolane.Inferior sulfolane through after the distillation, carries out manipulation of regeneration through anion exchange resin layer earlier again.Underpressure distillation pressure 0.3Mpa, 150 ~ 180 ℃ of recovered temperatures.This method processing deterioration tetramethylene sulfone energy consumption and power consumption are higher, and do not relate to the removal methods of cl ions.CN1861594A discloses the renovation process of inferior sulfolane, on the basis of CN1230545A, in the tetramethylene sulfone channel setting online pH meter, realized the real-time monitoring of regeneration back tetramethylene sulfone quality, but the defective that unresolved former patent exists.
CN1634917A discloses the corrosive impurity removal methods of inferior sulfolane, and the solid alkali that adopts the mixture of oxide compound and the carbonate or the supercarbonate of the basic metal load on the high-ratio surface porous adsorbing material or earth alkali metal to process is a sorbent material.Because solid alkali can not be regenerated, and has increased the discharging of waste residue.
In view of now relevant inferior sulfolane purifying method, the H that all produces to the tetramethylene sulfone deterioration
2SO
3And organic acidity material such as sulfonic acid class and the purifying method that adopts does not relate to C
6, C
7Component gets into the Cl in the tetramethylene sulfone
-Remove and existence or the anti-organic contamination ability of strong alkali resin, or adsorbent of molecular sieve regeneration difficulty; Or carclazyte aftertreatment difficulty, and cause the tetramethylene sulfone deterioration, or earlier through passing through anion exchange resin layer again after the distillation; Energy consumption is high, or adopts the solid alkali sorbent material, produces defectives such as industrial residue; This patent provides that a kind of running cost is low, operational process relatively simply, does not produce or produces the tetramethylene sulfone dechlorination method and the industrial application device of solid residue less, and effective elimination is with C
6, C
7Component gets in the tetramethylene sulfone and cumulative Cl
-, the Cl of solution sulfolane unit equipment
-Etching problem, the equipment corrosion inhibition rate reaches 81.5%, and the sulfolane unit high-temperature heat-exchanging reaches 2 ~ 3 years 1 and repaiies; Eliminate safe hidden trouble, reduce running cost, the implement device long-term operation; Guarantee Aromatic Hydrocarbon United Plant safe operation at full capacity simultaneously, improve the economic benefit of Aromatic Hydrocarbon United Plant.
Summary of the invention
The invention provides a kind of full scale plant and application method that reduces aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment corrosion.Main purpose is to be directed against with C
6, C
7Component gets in the tetramethylene sulfone and cumulative Cl
-Cause the tetramethylene sulfone high-temperature heat-exchanging just to need maintenance or replacing once in about 6 months; Far do not reach 2 years of design, during the switching heat-exchanger of sulfolane unit parking maintenance/more, reformer need reduce load 20% operation; Influenced the benefit of whole Aromatic Hydrocarbon United Plant, the Cl in tetramethylene sulfone in the extraction system
-Be accumulated to 5 ~ 7mg/kg; Compelled discharge unit tetramethylene sulfone is also added fresh tetramethylene sulfone, has strengthened problems such as running cost, and a kind of running cost is low, operational process relatively simply, does not produce solid slag tetramethylene sulfone dechlorination method and industrial application device are provided; Make the cl ions in the tetramethylene sulfone be reduced to operation below the 1mg/kg; Reduced tetramethylene sulfone to corrosion on Equipment property, made the high interchanger maintenance cycle of former sulfolane unit reach 3 years, the implement device long-term operation; Guarantee Aromatic Hydrocarbon United Plant safe operation at full capacity simultaneously, improve the economic benefit of Aromatic Hydrocarbon United Plant.
Content of the present invention is:
A kind of reduction aromatic hydrocarbon extraction solvent sulfolane unit; The solvent sulfolane of aromatic device extraction system is introduced industrial cleaning facility; Remove the cl ions in the sulfolane solvent through IX, it is characterized in that the industrial application refining plant that this method is used comprises: the lean solvent of aromatic extraction unit draw that port connection traffic meter (1), under meter (1) connect that solvent interchanger (2), solvent interchanger (2) connect that solvent cooler (3), solvent cooler (3) connect that another passage that strainer (4), strainer (4) connect another passage that resin exchange column (5), resins exchange tower (5) connect solvent interchanger (2), solvent interchanger (2) connects aromatic extraction unit another connect port.
In the resins exchange tower basic anion exchange resin is housed, preferred macropore weak base type anionite-exchange resin.
In the import and export of resin tower 20 ~ 40 purpose silica sands of thickness 25 ~ 40cm are housed, prevent that resin runs off, filter simultaneously or adsorption solvent in the broken resin of colloid, solid impurity, seizure.
Reduction aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment application method of the present invention: the sulfolane solvent of introducing this device from aromatic extraction unit is cooled to below 60 ℃ through solvent interchanger (2), solvent cooler (3); Get into resins exchange tower (5), preferably be cooled to 40 ~ 45 ℃ and get into resins exchange tower (5).
The tetramethylene sulfone lean solvent of drawing from aromatic extraction unit is after under meter (1) metering, with volume space velocity 1.5 ~ 9.0.h
-1, preferred 3.0 ~ 6.0h
-1Through resins exchange tower (5).
Filtering accuracy 20 ~ 40 μ m of solvent filter (4).
Sulfolane solvent after the purification; Another heat exchanger channels through solvent interchanger (2); Carry out heat exchange with the sulfolane solvent of introducing this device from aromatic extraction unit and heat up, return and draw port with the tetramethylene sulfone lean solvent in the sulfolane unit and compare the lower another port of pressure, rely on the pressure difference operation of former extraction system; Do not increase power-equipments such as pump newly, do not increase power consumption.
The aromatic hydrocarbon extraction solvent tetramethylene sulfone is after purifying, and the cl ions in the tetramethylene sulfone is reduced to below the 1mg/kg, has reduced tetramethylene sulfone to corrosion on Equipment property, equipment corrosion inhibition rate 81.5%.The pH value of solvent is elevated to more than 6.0, and the solid impurity in the tetramethylene sulfone, gluey polymer substance are removed, and colourity is less than 0.5.
A kind of full scale plant and application method that reduces aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment corrosion; The tetramethylene sulfone lean solvent of aromatic hydrocarbons extraction system is introduced this device; Remove the cl ions in the sulfolane solvent through IX, the industrial application refining plant of use relies on the pressure reduction operation of former extraction system; Need not increase power systems such as pump, need not increase new power consumption.Reduce aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment corrosion.
In the resins exchange tower basic anion exchange resin is housed, removes the cl ions in the tetramethylene sulfone lean solvent through IX.The basic anion exchange resin that is equipped with in the resins exchange tower, preferred macropore weak base type anionite-exchange resin.In the import and export of resin tower 20 ~ 40 purpose silica sands of 25 ~ 40cm are housed, filter or adsorption solvent in the broken resin of colloid, solid impurity, seizure.
Sulfolane solvent after the dechlorination of this refining plant; The passage of another heat exchange through solvent interchanger (2); Carrying out heat exchange with the sulfolane solvent of introducing this device from aromatic extraction unit heats up; Return the lower pressure end of sulfolane unit, rely on the pressure difference operation of former extraction system, do not need new power consumption.
Advantage of the present invention is: a kind of full scale plant and application method that reduces aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment corrosion is provided; Technology is simple, relies on the pressure difference operation of former tetramethylene sulfone extraction system, need not increase power-equipments such as pump; Need not increase new power consumption, running cost is low; Extraction plant cut/cut out to device can flexibly according to the situation of chloride ion content in the tetramethylene sulfone extraction solvent; The anti-organic contamination ability of being selected for use of macropore weak base type resin is strong, to Cl
-Removal effect is remarkable, and the cl ions in the sulfolane solvent is reduced to below the 1mg/kg, and the pH value of solvent is elevated to more than 6.0, has reduced tetramethylene sulfone to corrosion on Equipment, and equipment corrosion inhibition rate 81.5% reaches 3 years 1 and repaiies; Adsorbable gluey polymer substance, solvent colourity is reduced to below 0.5; Resin is easy to regeneration and uses, and is easy to separate with silica sand, can not bring solid-state waste residue; Reduce tetramethylene sulfone and efflux, reduce tetramethylene sulfone consumption; Eliminated potential safety hazard,, improved the economic benefit of whole Aromatic Hydrocarbon United Plant for Aromatic Hydrocarbon United Plant LP, oepration at full load provide assurance.
Description of drawings
Fig. 1 reduces aromatic hydrocarbon extraction solvent sulfolane unit synoptic diagram.
Among the figure: 1 under meter, 2 solvent interchanger, 3 solvent cooler, 4 strainers, 5 resins exchange towers, 6 pipe connectings, 7 feeding lines, 8 discharging pipelines.
Embodiment:
The draw port of tetramethylene sulfone lean solvent behind the tetramethylene sulfone cryogenic heat exchanger of extraction plant introduced this device through pipe connecting and is connected with under meter (1) and measures through under meter (1); Under meter (1) connects solvent interchanger (2), solvent interchanger (2) connects water cooler (3), water cooler (3) connection strainer (4); Strainer filters solid impurity and the colloid in the tetramethylene sulfone lean solvent; Strainer (4) connects resin exchange column (5); Resins exchange tower (5) removes cl ions while adsorbed polymer colloid in the tetramethylene sulfone; Resins exchange tower (5) connects another passage of solvent interchanger solvent (2); The solvent after the purification and the lean solvent of introducing carry out heat exchange and heat up, and another of another passage connection aromatic extraction unit of solvent interchanger solvent (2) connects port, and the sulfolane solvent after this apparatus processes turns back to the low-pressure port of extraction plant.
The 67f macropore weak base type anionite-exchange resin of Shanghai ROHM AND HAAS chemical industry ltd is housed in the resins exchange tower.
Through the temperature that the flow control of regulating under meter (1) control tetramethylene sulfone charging air speed, adjusting water cooler (3) water coolant gets into the tetramethylene sulfone lean solvent of resin tower, the tetramethylene sulfone lean solvent that flows out resin tower is taken a sample, analyze its Cl
-Content, pH value, and with getting into this device preceding tetramethylene sulfone compares, confirm the operational cycle length of resin.
The normal operating condition of this device is listed in table 1.
The normal operating condition of table 1 apparatus of the present invention
After resin penetrates, can reuse through regeneration, renovation process is identical with conventional resin regeneration method, but for preventing Na
+Adsorptive clay causes disadvantageous effect to downstream unit, and control washing ratio is greater than 40:1.
Further specify the present invention through embodiment below, but the present invention is not limited to embodiment, authority of the present invention is as the criterion with claims.
Embodiment 1
The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 1.5h
-1, the flow of adjusting water cooler water coolant, 60 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.Get into the tetramethylene sulfone lean solvent pH4.3 of resins exchange tower, Cl
-Content 5.9mg/kg.Tetramethylene sulfone lean solvent to flowing out resin tower is taken a sample, and analyzes Cl
-Content, pH value, the result sees table 2.
Embodiment 2
The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 9.0h
-1, the flow of adjusting water cooler water coolant, 55 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.Get into the tetramethylene sulfone lean solvent pH4.3 of resins exchange tower, Cl
-Content 5.9mg/kg takes a sample to the tetramethylene sulfone lean solvent that flows out resin tower, analyzes Cl
--Content, pH value, the result sees table 2.
Embodiment 3
The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 4.5h
-1, the flow of adjusting water cooler water coolant, 50 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.Get into the tetramethylene sulfone lean solvent pH4.3 of resins exchange tower, Cl
-Content 5.9mg/kg.Tetramethylene sulfone lean solvent to flowing out resin tower is taken a sample, and analyzes its Cl
-Content, pH value, the result sees table 2.
Embodiment 4
The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 6.0h
-1, the flow of adjusting water cooler water coolant, 45 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.Get into the tetramethylene sulfone lean solvent pH4.3 of resins exchange tower, Cl
-Content 5.9mg/kg.Tetramethylene sulfone lean solvent to flowing out resin tower is taken a sample, and analyzes its Cl
-Content, pH value, the result sees table 2.
Embodiment 5
The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 3.0h
-1, the flow of adjusting water cooler water coolant, 40 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.Get into the tetramethylene sulfone lean solvent pH4.3 of resins exchange tower, Cl
-Content 5.9mg/kg.Tetramethylene sulfone lean solvent to flowing out resin tower is taken a sample, and analyzes its Cl
-Content, pH value, the result sees table 2.
Table 2 tetramethylene sulfone decontamination effect improving
Embodiment 6
Get into the tetramethylene sulfone lean solvent colourity 2.5 of resins exchange tower; Solvent filter (4) and resins exchange tower (5) can effectively filter with adsorption solvent in solid impurity and colloid, the tetramethylene sulfone that flows out this device is compared colourity with the sulfolane solvent that gets into this device and is obviously reduced.The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 6.0h
-1, the flow of adjusting water cooler water coolant, 40 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.The tetramethylene sulfone lean solvent colourity behind this dechlorination device is flowed out in monitoring, investigates the result and sees table 3.
Solid impurity in table 3 strainer and resin filter and the adsorption solvent and colloidal effect
Embodiment 7
Get into the tetramethylene sulfone lean solvent pH4.3 of this device, C1
-Content 5.9mg/kg, colourity 2.5.The tetramethylene sulfone volume space velocity that gets into resin tower through under meter control is 6.0h
-1, the flow of adjusting water cooler water coolant, 40 ℃ of the temperature of the tetramethylene sulfone lean solvent of control entering resin tower.With tetramethylene sulfone lean solvent sampling the carrying out hanging test of inflow, bleeder, measure corrodibility, calculate the corrosion mitigating effect of tetramethylene sulfone lean solvent after this apparatus processes.Hanging test adopts GB10124-88 " metallic substance laboratory uniform corrosion total immersion test method ", at 180 ℃, N
2Carry out under the protection.Lacing film is the 20# carbon steel, and is identical with the production equipment material.Tetramethylene sulfone lean solvent before tetramethylene sulfone lean solvent after this apparatus processes and the introducing device is compared, and corrodibility reduces, equipment corrosion inhibition rate 815%, and the device maintenance cycle reaches 3 years.
The corrosion mitigating effect of sulfolane solvent after this apparatus processes of table 4
Claims (9)
1. one kind is reduced the aromatic hydrocarbon extraction solvent sulfolane unit, it is characterized in that the industrial application refining plant that uses comprises: the lean solvent of aromatic extraction unit draw that port connection traffic meter (1), under meter (1) connect that solvent interchanger (2), solvent interchanger (2) connect that solvent cooler (3), solvent cooler (3) connect that another passage that strainer (4), strainer (4) connect another passage that resin exchange column (5), resins exchange tower (5) connect solvent interchanger (2), solvent interchanger (2) connects aromatic extraction unit another connect port.
2. device according to claim 1 is characterized in that: in the resins exchange tower basic anion exchange resin is housed, preferred macropore weak base type anionite-exchange resin.
3. device according to claim 1 and 2 is characterized in that: 20 ~ 40 purpose silica sands that thickness 25 ~ 40cm is housed in the import and export of resin tower.
4. the reduction aromatic hydrocarbon extraction solvent tetramethylene sulfone equipment application method of claim 1; It is characterized in that: the sulfolane solvent of introducing from aromatic extraction unit is cooled to below 60 ℃ through solvent interchanger (2), solvent cooler (3), gets into resins exchange tower (5).
5. application method according to claim 4 is characterized in that: solvent cooler (3) is cooled to 40 ~ 45 ℃ and gets into resins exchange tower (5).
6. application method according to claim 4 is characterized in that: the tetramethylene sulfone lean solvent of drawing from aromatic extraction unit is after under meter (1) metering, with volume space velocity 1.5 ~ 9.0.h
-1Through resins exchange tower (5).
7. application method according to claim 6 is characterized in that: volume space velocity 3.0 ~ 6.0h
-1Through resins exchange tower (5).
8. application method according to claim 4 is characterized in that: filtering accuracy 20 ~ 40 μ m of solvent filter (4).
9. application method according to claim 4; It is characterized in that: the sulfolane solvent after the purification; Another heat exchanger channels through solvent interchanger (2); Carry out heat exchange with the sulfolane solvent of introducing from aromatic extraction unit and heat up, return and draw port with the tetramethylene sulfone lean solvent in the sulfolane unit and compare the lower another port of pressure, rely on the pressure difference operation of former extraction system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223013.6A CN102731472B (en) | 2012-06-28 | 2012-06-28 | Apparatus for reducing arene extraction solvent sulfolane, and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223013.6A CN102731472B (en) | 2012-06-28 | 2012-06-28 | Apparatus for reducing arene extraction solvent sulfolane, and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102731472A true CN102731472A (en) | 2012-10-17 |
| CN102731472B CN102731472B (en) | 2015-01-07 |
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ID=46987854
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178205A (en) * | 2014-07-18 | 2014-12-03 | 中国石油化工股份有限公司 | Industrial plant for lowering operating cost of aromatic extraction system and application method thereof |
| CN110604967A (en) * | 2019-10-15 | 2019-12-24 | 北京宝晨能源工程技术有限公司 | Sulfolane regeneration device and method |
| CN112337183A (en) * | 2020-09-28 | 2021-02-09 | 中国石油化工股份有限公司 | Multifunctional anti-corrosion skid-mounted device for refining and chemical enterprises and application method |
| CN114191882A (en) * | 2021-11-16 | 2022-03-18 | 北方华锦化学工业股份有限公司 | Effective purification method for aromatic hydrocarbon device solvent system |
| CN115672410A (en) * | 2022-11-07 | 2023-02-03 | 国家能源集团煤焦化有限责任公司 | Regeneration system for sulfolane regeneration and regeneration system |
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| CN1217367A (en) * | 1997-11-11 | 1999-05-26 | 中国石油化工总公司 | Process for regenerating aromatic hydrocarbon extraction solvent |
| CN2709446Y (en) * | 2004-06-21 | 2005-07-13 | 韩进东 | Purification device aromatics extractant sulfolane |
| CN1644581A (en) * | 2004-11-25 | 2005-07-27 | 中国石化集团天津石油化工公司 | Method for removing chlorine and corrosion negative ions from poor sulfolane |
| CN201815315U (en) * | 2010-09-28 | 2011-05-04 | 黄梅县联兴化工有限责任公司 | Open-type resin exchange tower |
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| CN1217367A (en) * | 1997-11-11 | 1999-05-26 | 中国石油化工总公司 | Process for regenerating aromatic hydrocarbon extraction solvent |
| CN2709446Y (en) * | 2004-06-21 | 2005-07-13 | 韩进东 | Purification device aromatics extractant sulfolane |
| CN1644581A (en) * | 2004-11-25 | 2005-07-27 | 中国石化集团天津石油化工公司 | Method for removing chlorine and corrosion negative ions from poor sulfolane |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178205A (en) * | 2014-07-18 | 2014-12-03 | 中国石油化工股份有限公司 | Industrial plant for lowering operating cost of aromatic extraction system and application method thereof |
| CN104178205B (en) * | 2014-07-18 | 2016-01-20 | 中国石油化工股份有限公司 | Reduce full scale plant and the application method of Aromatics Extractive Project system operation cost |
| CN110604967A (en) * | 2019-10-15 | 2019-12-24 | 北京宝晨能源工程技术有限公司 | Sulfolane regeneration device and method |
| CN112337183A (en) * | 2020-09-28 | 2021-02-09 | 中国石油化工股份有限公司 | Multifunctional anti-corrosion skid-mounted device for refining and chemical enterprises and application method |
| CN114191882A (en) * | 2021-11-16 | 2022-03-18 | 北方华锦化学工业股份有限公司 | Effective purification method for aromatic hydrocarbon device solvent system |
| CN115672410A (en) * | 2022-11-07 | 2023-02-03 | 国家能源集团煤焦化有限责任公司 | Regeneration system for sulfolane regeneration and regeneration system |
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|---|---|
| CN102731472B (en) | 2015-01-07 |
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