CN105884566A - Butter inhibitor for MTO (methanol to olefins) device alkaline washing towers and preparation method thereof - Google Patents
Butter inhibitor for MTO (methanol to olefins) device alkaline washing towers and preparation method thereof Download PDFInfo
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- CN105884566A CN105884566A CN201410742177.9A CN201410742177A CN105884566A CN 105884566 A CN105884566 A CN 105884566A CN 201410742177 A CN201410742177 A CN 201410742177A CN 105884566 A CN105884566 A CN 105884566A
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Abstract
The invention discloses a butter inhibitor for MTO (methanol to olefins) device alkaline washing towers and a preparation method thereof, belonging to the field of petrochemical industry. The butter inhibitor is characterized by comprising (a) 20-50 wt% of polymerization inhibitor, (B) 5-20 wt% of dispersing agent, (C) 2-10 wt% of antioxidant and (D) 20-73 wt% of solvent. The preparation method comprises the following steps: sequentially adding the polymerization inhibitor, dispersing agent, antioxidant and solvent into a container according to percentage by weight under ordinary pressure, and stirring for 20-60 minutes to obtain the butter inhibitor for MTO device alkaline washing towers. Various components of the inhibitor have favorable water solubility, so that the inhibitor prepared according to the proportion has uniform and stable state and reliable performance. Besides, the inhibitor has the advantages of accessible raw materials and simple production process, and is convenient to use.
Description
Technical field
The invention belongs to petrochemical industry, be specifically related to a kind of for MTO device caustic wash tower
Butter inhibitor.
Background technology
In the course of reaction of methanol-to-olefins (MTO), it is inevitably generated some CO2,
CO in reaction gas2Much harm can be brought to cryogenic separation and rectification, as drawn if do not removed
Play equipment, the corrosion of pipeline.When cryogenic separation, CO2Form dry ice blocking under cryogenic
Equipment and pipeline, so must absorbing by alkali cleaning, removing CO2.Meeting in alkaline cleaning procedure
Produce a certain amount of grease, be commonly called as butter.Butter forms latter aspect is just affecting caustic wash tower
Often run and alkali cleaning effect, show as a large amount of butter and build up fouling, distributor and filling out in blocking tower
Material, causes tower pressure reduction to increase, and tower top washing section washings Ph value raises, and alkali consumption increases, alkali
Wash the cycle of operation shortening etc. of tower；On the other hand the salkali waste containing a large amount of butter is subsequent wastewater treatment
During bring a lot of difficulty.At present, the domestic MTO device gone into operation controls caustic wash tower butter shape
Become mainly by injecting ethylene unit butter inhibitor, but owing to butter formation mechenism is incomplete
Identical, using effect is inconspicuous.
It is generally acknowledged that the generation of ethylene alkali-washing tower butter mainly has two reasons: one is that cracking gas is at alkali
The alkadienes condensed during washing or be dissolved in alkali liquor or other unsaturated hydrocarbons are at trace oxygen, gold
Belong under the effect of ion, form free radical, thus cause Raolical polymerizable to generate macromole
Material；Two is that in cracking gas, oxygenatedchemicals aldehydes or ketones, under the effect of alkali, easily occurs Aldol
Condensation reaction, the aldehydes or ketones on i.e. two molecule alpha position carbon atoms, under NaOH effect, adds
Become reaction to generate beta-hydroxy aldehyde, the most further occur additive reaction to generate certain molecular weight
Butter.
Owing to raw material and course of reaction are entirely different, the butter state that MTO caustic wash tower generates is the most not
With, ethylene butter is yellow oily, and MTO butter color is redder, and meets air and quickly contract
Composite solid state.Oxycompound kind more (such as aldehyde, ketone, alcohol, ether etc.) in MTO reaction gas,
Content is bigger, and the amount of alkadienes is little, so MTO caustic wash tower butter formation mechenism is mainly
In reaction gas, multiple oxygenatedchemicals occurs Aldol condensation reaction to be formed under conditions of caustic wash tower
Macromolecule polyalcohol；The hydro carbons of the most a small amount of more than C6 condenses out in alkaline cleaning procedure, contracting
Close product and the hydrocarbon accumulation of condensation, be collectively forming yellow oily substance and be present in alkali liquor.
United States Patent (USP) US4673489 discloses a kind of use hydroxylamine compound or its sulfate comes
Control the Aldol condensation reaction in caustic wash tower, thus suppress the method that butter generates.United States Patent (USP)
US4952301 proposes and a kind of uses ethylenediamines compound to come together to suppress caustic wash tower butter
Generate.United States Patent (USP) US5160425 proposes and a kind of uses the material of carbohydrazide to suppress alkali cleaning
The generation of tower butter.United States Patent (USP) US6372121 proposes use alpha-amido hydrochlorate and the ammonia of ester
Base acid compounds is as the butter inhibitor in caustic wash tower.Chinese patent 200710119735.6
Patent proposes and uses water soluble antioxidants, polymerization inhibitor, dispersant solvent to prepare butter inhibitor
Method.Chinese patent 200810119911.0 proposes a kind of employing alcamine compound, acyl
The method that hydrazine class compound and alkyl amine compound prepare butter inhibitor.Chinese patent
201010140277.6 propose a kind of use antioxidant, polymerization inhibitor, dispersant matal deactivator,
The method of butter inhibitor prepared by a certain percentage by solvent.But the common feature of above patent is
It is both for the generation of ethylene apparatus caustic wash tower butter.Ethylene unit and MTO device raw material are not
Same, course of reaction difference, product difference, so the butter state that caustic wash tower generates has very
Big difference, its formation mechenism also has the most different, and ethylene butter inhibitor technology is not particularly suited for MTO
Device.
Chinese patent 201410146651.1 discloses one
Antioxidant, hydroquinone be polymerization inhibitor, water be that the suppression of MTO device caustic wash tower butter prepared by solvent
Agent, but owing to the Pentaerythritols bis-phosphite described in this patent can not be dissolved in water and typically has
Machine solvent, so preparation cannot be realized.
Summary of the invention
The invention provides a kind of butter inhibitor for MTO device caustic wash tower, for MTO
The butter that device caustic wash tower generates has that inhibition is good, good stability, production is simple, use
Advantage easily.With solve MTO device caustic wash tower butter generate and blocking tower tray problem and
The butter inhibition that MTO device caustic wash tower is generated by butter inhibitor of the prior art is low
Problem.
In order to solve the problems referred to above, the technical solution used in the present invention is:
A kind of butter inhibitor for MTO device caustic wash tower, including polymerization inhibitor, dispersant,
Antioxidant and solvent, it is characterised in that each component ratio of described butter inhibitor is:
(A) polymerization inhibitor of 20-50 weight %；
(B) dispersant of 5-20 weight %；
(C) antioxidant of 2-10 weight %；
(D) solvent of 20-73 weight %；
In terms of butter inhibitor gross weight.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In, each component ratio of described butter inhibitor is preferably:
(A) polymerization inhibitor of 30-40 weight %；
(B) dispersant of 10-15 weight %；
(C) antioxidant of 5-8 weight %；
(D) solvent of 37-55 weight %；
In terms of butter inhibitor gross weight.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described polymerization inhibitor can be ethylene-amines, alcamines, the one of azanol apoplexy due to endogenous wind or
More than Zhong, the preferably one of ethylene amines apoplexy due to endogenous wind.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described ethylene-amines can be selected from diethylenetriamine, triethylene tetramine or four ethylene five
Amine, preferably triethylene tetramine；Described alcamines be monoethanolamine, diethanolamine, isopropanolamine,
N, N-dimethylethanolamine or N-diethyl ethylene diamine, preferably monoethanolamine；Described azanol class is
N, N-diethyl hydroxylamine, N, N-dimethyl hydroxylamine or N-isopropylhydroxyla, preferably diethyl hydroxylamine.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described dispersant is sodium polyacrylate, copolymer of acrylic acid and methyl acrylate or acrylic acid
-acrylamide copolymer, optimization polypropylene acid sodium.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described sodium polyacrylate molecular weight is 1000～5000, preferably 2000～3000；Described
The molecular weight of copolymer of acrylic acid and methyl acrylate be 5000～12000, preferably 6000～
8000；Described acrylic acid-acrylamide copolymer molecular weight is 100,000～1,000,000, preferably
15～850,000.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described antioxidant is sodium sulfite, sodium pyrosulfite, sodium sulfite, thiosulfuric acid
Sodium, methionine or thiourea；Preferably sodium sulfite.
A kind of butter inhibitor for MTO device caustic wash tower of the present invention, its further feature exists
In: described solvent selects deionized water, electrical conductivity ＜ 10 μ s cm-1。
Present invention also offers the preparation side of a kind of butter inhibitor for MTO device caustic wash tower
Method, it is characterised in that: respectively by the polymerization inhibitor of constant weight percentage ratio, dispersant, antioxidant,
Solvent is sequentially added in container at ambient pressure, maintain temperature at 40～60 DEG C, with 50～
The rotating speed of 100r/min stirs 20～60 minutes, and the MTO device caustic wash tower i.e. preparing the present invention is yellow
Oil inhibitor；Each component ratio of described butter inhibitor is:
(A) polymerization inhibitor of 20-50 weight %；
(B) dispersant of 5-20 weight %；
(C) antioxidant of 2-10 weight %；
(D) solvent of 20-73 weight %；
In terms of butter inhibitor gross weight.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described polymerization inhibitor can be ethylene-amines, alcamines, azanol apoplexy due to endogenous wind
One or more, the preferably one of ethylene amines apoplexy due to endogenous wind.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described ethylene-amines can be selected from diethylenetriamine, triethylene tetramine
Or TEPA, preferably triethylene tetramine；Described alcamines be monoethanolamine, diethanolamine,
Isopropanolamine, N, N-dimethylethanolamine or N-diethyl ethylene diamine, preferably monoethanolamine；Institute
Stating azanol class is N, N-diethyl hydroxylamine, N, N-dimethyl hydroxylamine or N-isopropylhydroxyla, preferably
Diethyl hydroxylamine.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described dispersant is sodium polyacrylate, acrylic acid-acrylic acid methyl ester copolymerization
Thing or acrylic acid-acrylamide copolymer, optimization polypropylene acid sodium.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described sodium polyacrylate molecular weight is 1000～5000, preferably 2000～
3000；The molecular weight of described copolymer of acrylic acid and methyl acrylate is 5000～12000, excellent
Select 6000～8000；Described acrylic acid-acrylamide copolymer molecular weight is 100,000～100
Ten thousand, preferably 15～850,000.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described antioxidant be sodium sulfite, sodium pyrosulfite, sodium sulfite,
Sodium thiosulfate, methionine or thiourea；Preferably sodium sulfite.
The preparation method of a kind of butter inhibitor for MTO device caustic wash tower of the present invention, it enters
One step is characterised by: described solvent selects deionized water, electrical conductivity ＜ 10 μ s cm-1。
A kind of butter inhibitor for MTO device caustic wash tower of the present invention is in MTO device alkali cleaning
When tower is specifically applied, by above-mentioned butter inhibitor in caustic wash tower, connect online on weak base circular route
Continuous injection, on the basis of the reaction gas gross mass entering caustic wash tower, the mass concentration of interpolation is
10-100 μ g/g, preferably 20-50 μ g/g.
Butter inhibitor of the present invention is according to MTO device butter formation mechenism, from multiple angle
Degree sets out the generation of suppression butter, can suppress what oxygenatedchemicals occurred Aldol condensation reaction,
And can reduce a small amount of oxygen dissolved in alkali liquor, eliminate the further oxidation of condensation reaction products, with
Time make a small amount of butter of generation and C6 condensation hydro carbons dispersion, be dissolved in alkali liquor, it is to avoid butter hinders
Plug tower tray, impact produces.Inhibitor each component of the present invention all has good water solublity, by this
The inhibitor state that the proportioning that invention provides is prepared as is uniform and stable, dependable performance, and originally presses down
Preparation raw material is easy to get, and produces simple, easy to use.
Detailed description of the invention
Describe the present invention in detail with specific embodiment below, but these embodiments are not limiting as this
The scope of invention.
Embodiment 1-14 is butter inhibitor each component composition and proportioning.Concrete preparation method is for pressing
Each component of precise is joined in flask by the order in table 1, table 2, maintains 40 DEG C,
Stir 30 minutes with the rotating speed of 50r/min, i.e. prepare the present invention for MTO device caustic wash tower
Butter inhibitor.Wherein deionization electrical conductivity of water ＜ 10 μ s cm-1。
Table 1 embodiment 1-7 butter inhibitor component and proportioning (in table, data are all weight percentage)
Table 2 embodiment 8-14 butter inhibitor component and proportioning (in table, data are all weight percentage)
Embodiment 15
Butter inhibitor in embodiment 1 is applied to MTO analog caustic wash tower, reacts former
Material is methanol, and ethylene, propene yield are 78%, and in caustic wash tower, naoh concentration is 8%, press down
Preparation disposably joins in circulation alkali liquor, and adding amount is relative to reaction tolerance 100 μ g/g, device
Operating 20 hours, butter amount in detection alkali liquor, butter amount reduces 80% relative to blank experiment.
Embodiment 16
Butter inhibitor in embodiment 7 is applied to MTO analog caustic wash tower, reacts former
Material is methanol, and ethylene, propene yield are 78%, and in caustic wash tower, naoh concentration is 8%, press down
Preparation disposably joins in circulation alkali liquor, and adding amount is relative to reaction tolerance 100 μ g/g, device
Operating 20 hours, the butter amount in detection alkali liquor, butter amount reduces 76% relative to blank experiment.
Embodiment 17
Butter inhibitor in embodiment 12 is applied to MTO analog caustic wash tower, reaction
Raw material is methanol, and ethylene, propene yield are 78%, and in caustic wash tower, naoh concentration is 8%,
Inhibitor disposably joins in circulation alkali liquor, and adding amount is relative to cracking tolerance 100 μ g/g, dress
Putting operating 20 hours, the butter amount in detection alkali liquor, butter amount reduces relative to blank experiment
65%.
Claims (9)
1. for a butter inhibitor for MTO device caustic wash tower, including polymerization inhibitor, dispersant, antioxygen
Agent and solvent, it is characterised in that each component ratio of described butter inhibitor is:
(A) polymerization inhibitor of 20-50 weight %；
(B) dispersant of 5-20 weight %；
(C) antioxidant of 2-10 weight %；
(D) solvent of 20-73 weight %；
In terms of butter inhibitor gross weight；Described polymerization inhibitor can be ethylene-amines, alcamines, azanol apoplexy due to endogenous wind
One or more；Described dispersant be sodium polyacrylate, copolymer of acrylic acid and methyl acrylate or
Acrylic acid-acrylamide copolymer；Described antioxidant be sodium sulfite, sodium pyrosulfite, sodium sulfite,
Sodium thiosulfate, methionine or thiourea；Deionized water selected by described solvent.
Butter inhibitor for MTO device caustic wash tower the most according to claim 1, it is characterised in that:
Each component ratio of described butter inhibitor is:
(A) polymerization inhibitor of 30-40 weight %；
(B) dispersant of 10-15 weight %；
(C) antioxidant of 5-8 weight %；
(D) solvent of 37-55 weight %；
In terms of butter inhibitor gross weight.
Butter inhibitor for MTO device caustic wash tower the most according to claim 1, it is characterised in that:
Described ethylene-amines is diethylenetriamine, triethylene tetramine or TEPA；Described alcamines is single
Ethanolamine, diethanolamine, isopropanolamine, N, N-dimethylethanolamine or N-diethyl ethylene diamine；Described hydroxyl
Amine is N, N-diethyl hydroxylamine, N, N-dimethyl hydroxylamine or N-isopropylhydroxyla.
Butter inhibitor for MTO device caustic wash tower the most according to claim 1, it is characterised in that: institute
The sodium polyacrylate molecular weight stated is 1000～5000；The molecule of described copolymer of acrylic acid and methyl acrylate
Amount is 5000～12000；Described acrylic acid-acrylamide copolymer molecular weight is 100,000～1,000,000.
Butter inhibitor for MTO device caustic wash tower the most according to claim 1, it is characterised in that: institute
The antioxidant stated is sodium sulfite.
Butter inhibitor for MTO device caustic wash tower the most according to claim 1, it is characterised in that:
The electrical conductivity ＜ 10 μ s cm of described solvent deionized water-1。
7. the preparation method for the butter inhibitor of MTO device caustic wash tower, it is characterised in that: respectively will
The polymerization inhibitor of constant weight percentage ratio, dispersant, antioxidant, solvent are sequentially added into container at ambient pressure
In, maintain temperature at 40～60 DEG C, the rotating speed with 50～100r/min stirs 20～60 minutes, the most prepared
The MTO device caustic wash tower butter inhibitor of the present invention；Each component ratio of described butter inhibitor is:
(A) polymerization inhibitor of 20-50 weight %；
(B) dispersant of 5-20 weight %；
(C) antioxidant of 2-10 weight %；
(D) solvent of 20-73 weight %；
In terms of butter inhibitor gross weight.
8. the preparation method for the butter inhibitor of MTO device caustic wash tower, it is characterised in that: described
Polymerization inhibitor can be ethylene-amines, alcamines, azanol apoplexy due to endogenous wind one or more；Described dispersion
Agent is sodium polyacrylate, copolymer of acrylic acid and methyl acrylate or acrylic acid-acrylamide copolymer；Described
Antioxidant be sodium sulfite, sodium pyrosulfite, sodium sulfite, sodium thiosulfate, methionine or thiourea；
Deionized water selected by described solvent.
9. the preparation method for the butter inhibitor of MTO device caustic wash tower, it is characterised in that: described
The electrical conductivity ＜ 10 μ s cm of solvent deionized water-1。
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| CN201410742177.9A CN105884566A (en) | 2014-12-01 | 2014-12-01 | Butter inhibitor for MTO (methanol to olefins) device alkaline washing towers and preparation method thereof |
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| CN201410742177.9A CN105884566A (en) | 2014-12-01 | 2014-12-01 | Butter inhibitor for MTO (methanol to olefins) device alkaline washing towers and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106467448A (en) * | 2015-08-20 | 2017-03-01 | 中国石油化工股份有限公司 | For the alkene polymerization inhibitor in methanol-to-olefins device caustic wash tower |
| CN110452733A (en) * | 2018-05-08 | 2019-11-15 | 中国石油化工股份有限公司 | Inhibit the butter inhibitor that butter generates in MTO caustic wash tower |
| CN111056897A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Yellow oil inhibitor for caustic tower in methanol-to-olefin process |
| CN111056907A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor of alkaline washing system of methanol-to-olefin device |
| CN111056892A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Grease inhibitor for alkaline washing tower of methanol-to-olefin device |
| CN111056908A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing tower of methanol-to-olefin separation unit |
| CN111056906A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing system of methanol-to-olefin process |
| CN112209800A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
| CN112209789A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Pressure difference stabilizer composition for methanol-to-olefin alkaline tower and method for reducing pressure difference of alkaline tower |
| CN112209797A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Method for inhibiting butter formation in olefin production from oxygen-containing compound, and butter inhibitor composition |
| CN112209798A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112210381A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Inhibitor composition, preparation method and application thereof |
| CN114163290A (en) * | 2021-12-06 | 2022-03-11 | 万华化学集团股份有限公司 | Alkaline washing tower butter inhibitor and preparation method thereof |
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| CN106467448A (en) * | 2015-08-20 | 2017-03-01 | 中国石油化工股份有限公司 | For the alkene polymerization inhibitor in methanol-to-olefins device caustic wash tower |
| CN106467448B (en) * | 2015-08-20 | 2019-08-06 | 中国石油化工股份有限公司 | For the alkene polymerization inhibitor in methanol-to-olefins device caustic wash tower |
| CN110452733A (en) * | 2018-05-08 | 2019-11-15 | 中国石油化工股份有限公司 | Inhibit the butter inhibitor that butter generates in MTO caustic wash tower |
| CN111056897A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Yellow oil inhibitor for caustic tower in methanol-to-olefin process |
| CN111056907A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor of alkaline washing system of methanol-to-olefin device |
| CN111056892A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Grease inhibitor for alkaline washing tower of methanol-to-olefin device |
| CN111056908A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing tower of methanol-to-olefin separation unit |
| CN111056906A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing system of methanol-to-olefin process |
| CN111056907B (en) * | 2018-10-17 | 2023-05-02 | 中国石油化工股份有限公司 | Butter inhibitor of alkaline washing system of methanol-to-olefin device |
| CN111056908B (en) * | 2018-10-17 | 2023-04-07 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing tower of methanol-to-olefin separation unit |
| CN111056892B (en) * | 2018-10-17 | 2023-04-07 | 中国石油化工股份有限公司 | Grease inhibitor for alkaline washing tower of methanol-to-olefin device |
| CN111056906B (en) * | 2018-10-17 | 2023-04-07 | 中国石油化工股份有限公司 | Butter inhibitor for alkaline washing system of methanol-to-olefin process |
| CN112210381A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Inhibitor composition, preparation method and application thereof |
| CN112209797B (en) * | 2019-07-10 | 2022-07-08 | 中国石油化工股份有限公司 | Method for inhibiting butter formation in olefin production from oxygen-containing compound, and butter inhibitor composition |
| CN112209798B (en) * | 2019-07-10 | 2022-07-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112209800B (en) * | 2019-07-10 | 2022-07-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
| CN112209789B (en) * | 2019-07-10 | 2022-07-12 | 中国石油化工股份有限公司 | Pressure difference stabilizer composition for methanol-to-olefin alkaline tower and method for reducing pressure difference of alkaline tower |
| CN112210381B (en) * | 2019-07-10 | 2023-04-07 | 中国石油化工股份有限公司 | Inhibitor composition, preparation method and application thereof |
| CN112209798A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Butter inhibitor composition for methanol-to-olefin caustic tower and method for inhibiting butter generation |
| CN112209797A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Method for inhibiting butter formation in olefin production from oxygen-containing compound, and butter inhibitor composition |
| CN112209789A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Pressure difference stabilizer composition for methanol-to-olefin alkaline tower and method for reducing pressure difference of alkaline tower |
| CN112209800A (en) * | 2019-07-10 | 2021-01-12 | 中国石油化工股份有限公司 | Auxiliary agent composition for low-carbon olefin alkaline washing tower prepared from oxygen-containing compound and method for inhibiting butter generation |
| CN114163290A (en) * | 2021-12-06 | 2022-03-11 | 万华化学集团股份有限公司 | Alkaline washing tower butter inhibitor and preparation method thereof |
| CN114163290B (en) * | 2021-12-06 | 2024-02-27 | 万华化学集团股份有限公司 | Butter inhibitor for alkaline washing tower and preparation method thereof |
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Application publication date: 20160824 |