CN110294662A - A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof - Google Patents
A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof Download PDFInfo
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- CN110294662A CN110294662A CN201910592060.XA CN201910592060A CN110294662A CN 110294662 A CN110294662 A CN 110294662A CN 201910592060 A CN201910592060 A CN 201910592060A CN 110294662 A CN110294662 A CN 110294662A
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- butter
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/10—Purification; Separation; Use of additives by extraction, i.e. purification or separation of liquid hydrocarbons with the aid of liquids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/20—Use of additives, e.g. for stabilisation
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Abstract
The invention discloses a kind of ethylene alkali-washing tower butter inhibitors and preparation method thereof, include following component according to weight percent: diethyl hydroxylamine 30-40%, water-soluble imidazoline 5-10%, ammonium dihydrogen phosphate 4-5%, surplus are water.The present invention can be in ethylene alkali-washing tower on metallic surface, form one layer of unimolecule water-resistance protective film, butter inhibitor is greatly improved in ethylene alkali-washing tower for the inhibitory effect of butter, not only reduce the consumption of lye, reduce process costs, and prevent the appearance of stifled tower phenomenon, extend the cycle of operation and the service life of caustic wash tower, there is good dispersion and peace and quiet removal effect to the butter generated, to which the butter oil content in the spent lye of discharge be greatly reduced, to improve the discharge feature of environmental protection, it ensure that the discharge of spent lye can satisfy discharge standard.
Description
Technical field
The invention belongs to technical field of chemical products, and in particular to a kind of butter inhibitor for ethylene alkali-washing tower.
Background technique
Ethylene alkali-washing tower can generate a large amount of butter in use, and the butter of generation will affect ethylene alkali-washing tower just
It is often used and alkali cleaning effect, and a large amount of lye can be consumed, while a large amount of butter is easy in polymerization fouling blocking tower point
Cloth device and filler cause stifled tower phenomenon, so that the cycle of operation of caustic wash tower shortens, service life is also contracted by, in addition, due to row
Contain a large amount of butter in spent lye out, affects the discharge feature of environmental protection, these problems all bring frustration to chemical company.
Common solution is that butter inhibitor is added in ethylene alkali-washing tower currently on the market, but existing butter
It is less desirable for the inhibitory effect of butter for inhibitor, can not thoroughly solve " the butter frustration " of enterprise, as country is right
In chemical industry and the increasingly great attention of environmental protection, there is an urgent need to thoroughly solve this frustration for enterprise.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, provide a kind of inhibitory effect for butter it is good and
There is the butter inhibitor for ethylene alkali-washing tower of good dispersion and peace and quiet removal effect to the butter generated.
Technical solution: to achieve the above object, the present invention provides a kind of ethylene alkali-washing tower butter inhibitor, according to weight hundred
Divide than including following component:
Diethyl hydroxylamine 30-40%, water-soluble imidazoline 5-10%, ammonium dihydrogen phosphate 4-5%, surplus are water.
Design principle of the invention are as follows: water-soluble imidazoles is added in butter inhibitor of the present invention on the basis of diethyl hydroxylamine
Quinoline (C20H45N2(CH2O)n), water-soluble imidazoline is through ethylene-oxide-modified after oleic acid, the cyclisation of polyamines high temperature dehydration into being
A kind of organic compound with long alkyl chain and polar group has polar group on agent body, it can be adsorbed on equipment (second
Alkene caustic wash tower) on metallic surface, one layer of unimolecule water-resistance protective film is formed, the hydrogen ion in this layer of protective film and solution is made
With generating positively charged ion, reaction equation are as follows:
RNH2+H+→RNH3+(amine inhibitor)
Due to the H in this ion pair solution+(HCl and H2Hydrogen ion after S dissociation) there is strong repulsive interaction, it prevents
H+To the close of metal equipment, so that the corrosiveness of HCl and H2S are slowed down, in the corrosiveness of HCl-H2S-H2O type
In play the effect of inhibition, since the metal ion that corrosion generates has facilitation to the generation of butter so that this
Invention butter inhibitor has fabulous inhibition butter and generates effect.
In addition, the surface-active action of water-soluble imidazoline can be reduced the binding force of deposit and metal surface, make to deposit
Object is loose, has good effect to the removal of generated butter.
It further, include following component according to weight percent: diethyl hydroxylamine 33-36%, water-soluble imidazoline 7-
9%, ammonium dihydrogen phosphate 4.4-4.6%, surplus are water.
It further, include following component according to weight percent: diethyl hydroxylamine 35%, water-soluble imidazoline 8%, phosphorus
Acid dihydride ammonium 4.5%, surplus are water.
The preparation method of butter inhibitor of the present invention specifically: proportioned water is added into reaction kettle first, starting is anti-
It answers kettle to start to stir, proportioned diethyl hydroxylamine, water-soluble imidazoline and biphosphate is then sequentially added into reaction kettle
Ammonium forms butter inhibitor after being mixed.
Further, the time of the mixing is 0.8~1.2 hour.
The utility model has the advantages that compared with prior art, the present invention having following advantage:
1, the use of water-soluble imidazoline it is anti-can to form one layer of unimolecule in ethylene alkali-washing tower on metallic surface
Water-based protective film greatly improves butter inhibitor in ethylene alkali-washing tower for the inhibitory effect of butter, not only reduces alkali
The consumption of liquid reduces process costs, and prevents the appearance of stifled tower phenomenon, extend caustic wash tower the cycle of operation and
Service life.
2, since butter inhibitor of the present invention is for the fabulous inhibitory effect of butter, so that ethylene alkali-washing tower be greatly reduced
The production quantity of butter in use process ensure that the good alkali cleaning effect of ethylene alkali-washing tower.
3, due to the use of water-soluble imidazoline, surface-active action can be reduced the combination of deposit and metal surface
Power keeps deposit loose, has good dispersion and peace and quiet removal effect to the butter generated, thus the row of being greatly reduced
Butter content in spent lye out ensure that the discharge of spent lye can satisfy discharge to improve the discharge feature of environmental protection
Standard.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated.
Embodiment 1:
A kind of ethylene alkali-washing tower butter inhibitor, includes following component according to weight percent:
Diethyl hydroxylamine 30%, water-soluble imidazoline (C20H45N2(CH2O)n) 5%, ammonium dihydrogen phosphate 4%, water 61%.
In the present embodiment butter inhibitor the preparation method comprises the following steps: proportioned water is added into reaction kettle first, starting is anti-
It answers kettle to start to stir, proportioned diethyl hydroxylamine, water-soluble imidazoline and biphosphate is then sequentially added into reaction kettle
Ammonium ultimately forms butter inhibitor finished product after being mixed 0.8 hour.
Embodiment 2:
A kind of ethylene alkali-washing tower butter inhibitor, includes following component according to weight percent:
Diethyl hydroxylamine 40%, water-soluble imidazoline (C20H45N2(CH2O)n) 10%, ammonium dihydrogen phosphate 5%, water 45%.
In the present embodiment butter inhibitor the preparation method comprises the following steps: proportioned water is added into reaction kettle first, starting is anti-
It answers kettle to start to stir, proportioned diethyl hydroxylamine, water-soluble imidazoline and biphosphate is then sequentially added into reaction kettle
Ammonium ultimately forms butter inhibitor finished product after being mixed 1.2 hours.
Embodiment 3:
A kind of ethylene alkali-washing tower butter inhibitor, includes following component according to weight percent:
Diethyl hydroxylamine 35%, water-soluble imidazoline (C20H45N2(CH2O)n) 8%, ammonium dihydrogen phosphate 4.5%, water
52.5%.
In the present embodiment butter inhibitor the preparation method comprises the following steps: proportioned water is added into reaction kettle first, starting is anti-
It answers kettle to start to stir, proportioned diethyl hydroxylamine, water-soluble imidazoline and biphosphate is then sequentially added into reaction kettle
Ammonium ultimately forms butter inhibitor finished product after being mixed 1 hour.
Embodiment 4:
Under conditions of same process and parameter just by butter inhibitor made from embodiment 1 and traditional butter inhibitor
Identical dosage is applied respectively in ethylene alkali-washing tower A and ethylene alkali-washing tower B, is completed to technique to progress Data Detection, ethylene
The weight ratio of the butter amount and raw material that generate in caustic wash tower A is 20ppm, the butter content (cod) in the spent lye of discharge
Tower pressure in average out to 2000ppm, ethylene alkali-washing tower A is finally reduced to 20kpa；The butter amount and original generated in ethylene alkali-washing tower B
The weight ratio of material is 65ppm, butter content (cod) average out to 6000ppm, ethylene alkali-washing tower A in the spent lye of discharge
Interior tower pressure is finally reduced to 30kpa.
It is right according to above-mentioned detection data it is found that butter inhibitor made from embodiment 1 is compared with traditional butter inhibitor
It is improved in the inhibition of butter and elimination effect, the production quantity of butter can about reduce 2/3rds, this is entire
It will be a huge data in long-term process；Butter inhibitor made from additional embodiment 1 and traditional butter inhibitor
It compares, can also effectively reduce the tower pressure in ethylene alkali-washing tower, so that ethylene alkali-washing tower can be more normal, efficient
Operation, not only ensure that the using effect of caustic wash tower, and extend the cycle of operation and the service life of caustic wash tower.
Embodiment 5:
Under conditions of same process and parameter just by butter inhibitor made from embodiment 2 and traditional butter inhibitor
Identical dosage is applied respectively in ethylene alkali-washing tower A and ethylene alkali-washing tower B, is completed to technique to progress Data Detection, ethylene
The weight ratio of the butter amount and raw material that generate in caustic wash tower A is 20ppm, the butter content (cod) in the spent lye of discharge
Tower pressure in average out to 1800ppm, ethylene alkali-washing tower A is finally reduced to 18kpa；The butter amount and original generated in ethylene alkali-washing tower B
The weight ratio of material is 65ppm, butter content (cod) average out to 6000ppm, ethylene alkali-washing tower A in the spent lye of discharge
Interior tower pressure is finally reduced to 30kpa.
It is right according to above-mentioned detection data it is found that butter inhibitor made from embodiment 2 is compared with traditional butter inhibitor
It is improved in the inhibition of butter and elimination effect, the production quantity of butter can about reduce 2/3rds, this is entire
It will be a huge data in long-term process；Butter inhibitor made from additional embodiment 2 and traditional butter inhibitor
It compares, can also effectively reduce the tower pressure in ethylene alkali-washing tower, so that ethylene alkali-washing tower can be more normal, efficient
Operation, not only ensure that the using effect of caustic wash tower, and extend the cycle of operation and the service life of caustic wash tower.
Embodiment 6:
Under conditions of same process and parameter just by butter inhibitor made from embodiment 3 and traditional butter inhibitor
Identical dosage is applied respectively in ethylene alkali-washing tower A and ethylene alkali-washing tower B, is completed to technique to progress Data Detection, ethylene
The weight ratio of the butter amount and raw material that generate in caustic wash tower A is 19ppm, the butter content (cod) in the spent lye of discharge
Tower pressure in average out to 1900ppm, ethylene alkali-washing tower A is finally reduced to 19kpa；The butter amount and original generated in ethylene alkali-washing tower B
The weight ratio of material is 63ppm, butter content (cod) average out to 6000ppm, ethylene alkali-washing tower A in the spent lye of discharge
Interior tower pressure is finally reduced to 30kpa.
It is right according to above-mentioned detection data it is found that butter inhibitor made from embodiment 3 is compared with traditional butter inhibitor
It is improved in the inhibition of butter and elimination effect, the production quantity of butter can about reduce 2/3rds, this is entire
It will be a huge data in long-term process；Butter inhibitor made from additional embodiment 3 and traditional butter inhibitor
It compares, can also effectively reduce the tower pressure in ethylene alkali-washing tower, so that ethylene alkali-washing tower can be more normal, efficient
Operation, not only ensure that the using effect of caustic wash tower, and extend the cycle of operation and the service life of caustic wash tower.
Claims (5)
1. a kind of ethylene alkali-washing tower butter inhibitor, it is characterised in that: according to weight percent include following component:
Diethyl hydroxylamine 30-40%, water-soluble imidazoline 5-10%, ammonium dihydrogen phosphate 4-5%, surplus are water.
2. a kind of ethylene alkali-washing tower butter inhibitor according to claim 1, it is characterised in that: according to weight percent packet
Include following component: diethyl hydroxylamine 33-36%, water-soluble imidazoline 7-9%, ammonium dihydrogen phosphate 4.4-4.6%, surplus are water.
3. a kind of ethylene alkali-washing tower butter inhibitor according to claim 1, it is characterised in that: according to weight percent packet
Include following component: diethyl hydroxylamine 35%, water-soluble imidazoline 8%, ammonium dihydrogen phosphate 4.5%, surplus are water.
4. a kind of preparation method of ethylene alkali-washing tower butter inhibitor according to claim 1, it is characterised in that: it is specific
Process are as follows: proportioned water is added into reaction kettle first, starting reaction kettle starts to stir, then sequentially add into reaction kettle
Proportioned diethyl hydroxylamine, water-soluble imidazoline and ammonium dihydrogen phosphate form butter inhibitor after being mixed.
5. a kind of preparation method of ethylene alkali-washing tower butter inhibitor according to claim 4, it is characterised in that: described mixed
The time for closing stirring is 0.8~1.2 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910592060.XA CN110294662A (en) | 2019-07-02 | 2019-07-02 | A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910592060.XA CN110294662A (en) | 2019-07-02 | 2019-07-02 | A kind of ethylene alkali-washing tower butter inhibitor and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285190A (en) * | 2008-05-21 | 2008-10-15 | 辽宁石油化工大学 | Corrosion inhibition antisludging agent special for ethylene compression system |
| CN109503308A (en) * | 2019-01-07 | 2019-03-22 | 安徽卓远化工科技有限公司 | A kind of butter inhibitor and its production method |
-
2019
- 2019-07-02 CN CN201910592060.XA patent/CN110294662A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285190A (en) * | 2008-05-21 | 2008-10-15 | 辽宁石油化工大学 | Corrosion inhibition antisludging agent special for ethylene compression system |
| CN109503308A (en) * | 2019-01-07 | 2019-03-22 | 安徽卓远化工科技有限公司 | A kind of butter inhibitor and its production method |
Non-Patent Citations (3)
| Title |
|---|
| 中国腐蚀与防护学会编: "《材料腐蚀学科发展报告 2016-2017》", 31 March 2018, 中国科学技术出版社 * |
| 张广林等: "《炼油助剂应用手册》", 30 April 2003, 中国石化出版社 * |
| 薛安: "咪唑啉类缓蚀剂改性研究现状与进展", 《河南化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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