CN109022036A - Neutralization corrosion inhibitor and application thereof in hydrogenation device - Google Patents
Neutralization corrosion inhibitor and application thereof in hydrogenation device Download PDFInfo
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- CN109022036A CN109022036A CN201710427859.4A CN201710427859A CN109022036A CN 109022036 A CN109022036 A CN 109022036A CN 201710427859 A CN201710427859 A CN 201710427859A CN 109022036 A CN109022036 A CN 109022036A
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- corrosion inhibiter
- component
- neutralization
- amine
- quaternary ammonium
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- 238000005260 corrosion Methods 0.000 title claims abstract description 136
- 230000007797 corrosion Effects 0.000 title claims abstract description 136
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 56
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 16
- 239000003112 inhibitor Substances 0.000 title abstract 8
- -1 imidazoline quaternary ammonium salt Chemical class 0.000 claims abstract description 51
- 150000001412 amines Chemical class 0.000 claims abstract description 44
- 239000000126 substance Substances 0.000 claims abstract description 31
- 239000002904 solvent Substances 0.000 claims abstract description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- 230000003472 neutralizing effect Effects 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000003960 organic solvent Substances 0.000 claims description 13
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 125000003277 amino group Chemical group 0.000 claims description 6
- KNYKHCLCBHSFCK-UHFFFAOYSA-N 1-methoxypropan-1-amine Chemical compound CCC(N)OC KNYKHCLCBHSFCK-UHFFFAOYSA-N 0.000 claims description 5
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 4
- 229960001124 trientine Drugs 0.000 claims description 4
- DBAMUTGXJAWDEA-UHFFFAOYSA-N Butynol Chemical compound CCC#CO DBAMUTGXJAWDEA-UHFFFAOYSA-N 0.000 claims description 3
- 229940031098 ethanolamine Drugs 0.000 claims description 3
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 8
- 230000001681 protective effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000003643 water by type Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 150000001298 alcohols Chemical class 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000005642 Oleic acid Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 150000002460 imidazoles Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
- C10G75/02—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of corrosion inhibitors
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a neutralization corrosion inhibitor and application thereof in a hydrogenation device. The neutralization corrosion inhibitor comprises a first component and a second component, wherein the first component comprises imidazoline quaternary ammonium salt, amine substances and alkynol, the second component is a solvent, the first component accounts for 60-80% of the neutralization corrosion inhibitor, in the first component, the imidazoline quaternary ammonium salt accounts for 10-30 wt% of the neutralization corrosion inhibitor, the amine substances account for 30-40 wt% of the neutralization corrosion inhibitor, and the alkynol accounts for 10-20 wt% of the neutralization corrosion inhibitor. The imidazoline quaternary ammonium salt and the alkynol in the first component with the content enable the inner surface of metal equipment to form a compact and firm protective film, and amine substances in the first component can react with an acidic medium, so that the neutralization corrosion inhibitor realizes the effects of corrosion inhibition and neutralization, and effectively inhibits the corrosion phenomenon of the device.
Description
Technical field
The present invention relates to chemical technology fields, in particular to a kind of neutralization corrosion inhibiter and its in hydrogenation plant
Using.
Background technique
In recent years, with the attention that national environmental protection works, fuel oil standard is stepped up.One as oil product of sulfur content
Important indicator is even more to be down to 10ug/g in the state V stage.So that refinery must pass through hydrotreating for gasoline, kerosene and diesel oil
The quality of oil product is improved, to reach the environmental protection standard of country.But current processed crude oil is increasingly inferior, the sulfur content of oil product,
Acid value and salt content are continuously increased, so that serious corrosion phenomenon occurs for the fractionating system of hydrogenation plant, it is serious to annoying life
Produce safety and oil quality.
Hydrogenation plant stripper overhead and exit site is evaporated, corrosion phenomenon is more serious.And H in material2S and HCl content
It is higher, electrochemical corrosion is cooperatively formed with water.Especially in dew point region, serious dew point corrosion will form.To understand
Certainly above-mentioned technical problem usually inhibits stripper low temperature position HCl-H with corrosion inhibiter in low fractionation outlet injection2S-H2O is rotten
Erosion.Neutralizing corrosion inhibiter not only should include neutralization organic neutralization component of good performance, but also should include the high-efficient corrosion inhibition type that performance matches
Component.However the existing type for neutralizing corrosion inhibiter and not accurately distinguishing neutralizing amine, control is not added to boiling point and molecular weight, is delayed simultaneously
Lose component it is ineffective, cannot effectively dew point suppression region corrosion.
Summary of the invention
The main purpose of the present invention is to provide a kind of neutralization corrosion inhibiter and its applications in hydrogenation plant, to solve to add
The problem of stripper and its downstream line are vulnerable to corrosion in hydrogen production device.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of neutralization corrosion inhibiter, including the first kind
Component and the second class component, wherein first kind component includes imidazoline quaternary ammonium salt, amine substance and alkynol, and the second class group is divided into
Solvent, first kind component, which accounts for, neutralizes the 60~80% of corrosion inhibiter, and in first kind component, imidazoline quaternary ammonium salt accounts for neutralization inhibition
10~30wt% of agent, amine substance account for the 30~40wt% for neutralizing corrosion inhibiter, and alkynol accounts for the 10~20wt% for neutralizing corrosion inhibiter.
Further, above-mentioned imidazoline quaternary ammonium salt includes oleic imidazolinone quaternary ammonium salt and/or naphthenic acid imidazoline quaternary ammonium salt.
Further, above-mentioned amine substance includes the first amine component and the second amine component, and the first amine groups point include
Methoxy propanamine, cyclohexylamine and ethanol amine are any one or more of, and the second amine groups point include diethylenetriamine, triethylene four
Amine, tetraethylenepentamine and polyethylene polyamine are any one or more of.
Further, the mass ratio of above-mentioned first amine component and the second amine component is 2:1~4:1, preferably 3:1.
Further, above-mentioned alkynol includes propilolic alcohol and/or butynol.
Further, above-mentioned second class component includes organic solvent and desalted water, and preferable organic solvent is methanol.
Further, above-mentioned organic solvent accounts for the 10~25wt% for neutralizing corrosion inhibiter, and desalted water accounts for and neutralizes corrosion inhibiter
10~25wt%.
According to another aspect of the present invention, application of the above-mentioned neutralization corrosion inhibiter of one kind in hydrogenation plant is provided, it will
Medium fluid including neutralizing corrosion inhibiter is passed through stripper and its downstream line in hydrogenation plant.
It further, is among the above 10~20ppm of medium fluid with the additional amount of corrosion inhibiter.
It applies the technical scheme of the present invention, provides a kind of neutralization inhibition including first kind component and the second class component
Agent, since the first kind component includes imidazoline quaternary ammonium salt, amine substance and alkynol, the second class group is divided into solvent, first kind group
Point account for and to neutralize the 60~80% of corrosion inhibiter, and the imidazoline quaternary ammonium salt in first kind component account for neutralize corrosion inhibiter 10~
30wt%, amine substance account for the 30~40wt% for neutralizing corrosion inhibiter, and alkynol accounts for the 10~20wt% for neutralizing corrosion inhibiter, to pass through
Imidazoline quaternary ammonium salt and alkynol in first kind component with above-mentioned content make the inner surface of metal equipment be capable of forming densification
Firm protective film, and the amine substance in first kind component can be reacted with acid medium, and then make among the above and corrosion inhibiter
The effect for realizing inhibition and neutralization effectively inhibits the generation of phenomenon of device corrosion.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows a kind of flow diagram for the preparation method for neutralizing corrosion inhibiter provided by embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
It can be seen from background technology that, hydrogenation plant stripper overhead and exit site is evaporated, corrosion phenomenon is more serious, usually exists
Low fractionation outlet injection neutralizes corrosion inhibiter to inhibit stripper low temperature position HCl-H2S-H2O corrosion, however existing neutralization corrosion inhibiter
The type for not accurately distinguishing neutralizing amine does not add control to boiling point and molecular weight, while inhibition component is ineffective, cannot be effective
The corrosion in dew point suppression region.The present inventor studies regarding to the issue above, provides a kind of neutralization corrosion inhibiter, packet
Including first kind component and the second class component, wherein first kind component includes imidazoline quaternary ammonium salt, amine substance and alkynol, and second
Class group is divided into solvent, and first kind component, which accounts for, neutralizes the 60~80% of corrosion inhibiter, and the imidazoline quaternary ammonium salt in first kind component accounts for
10~30wt% of corrosion inhibiter is neutralized, amine substance accounts for the 30~40wt% for neutralizing corrosion inhibiter, and alkynol, which accounts for, neutralizes the 10 of corrosion inhibiter
~20wt%.
Among the above in corrosion inhibiter since first kind component includes imidazoline quaternary ammonium salt, amine substance and alkynol, the second class
Group is divided into solvent, and first kind component, which accounts for, neutralizes the 60~80% of corrosion inhibiter, and during the imidazoline quaternary ammonium salt in first kind component accounts for
With 10~30wt% of corrosion inhibiter, amine substance account for neutralize corrosion inhibiter 30~40wt%, alkynol account for neutralize corrosion inhibiter 10~
20wt%, to make the interior table of metal equipment by imidazoline quaternary ammonium salt in the first kind component with above-mentioned content and alkynol
Face is capable of forming the protective film of compact and firm, and the amine substance in first kind component can be reacted with acid medium, and then be made
The effect of inhibition and neutralization is provided with corrosion inhibiter among the above, effectively inhibits the generation of phenomenon of device corrosion.
Of the invention among the above and in corrosion inhibiter, the structural formula of oleic imidazolinone quaternary ammonium salt can beWherein, R CH3(CH2)7CH=CH (CH2)6CH2 +OrI.e. structural formula isOleic acid miaow
Oxazoline quaternary ammonium salt.Also, those skilled in the art can rationally be selected according to type of the prior art to above-mentioned amine substance
It takes, in order to make to have the function of with corrosion inhibiter among the above to neutralize acid medium, it is preferable that amine substance includes the first amine component
With the second amine component, above-mentioned first amine groups point are any one or more of including methoxy propanamine, cyclohexylamine and ethanol amine,
Above-mentioned second amine groups point are any one or more of including diethylenetriamine, triethylene tetramine and polyethylene polyamine；It is more excellent
The mass ratio of selection of land, above-mentioned first amine component and above-mentioned second amine component is 2:1~4:1, further preferably 3:1.
Of the invention among the above and in corrosion inhibiter, those skilled in the art can also be according to the prior art to above-mentioned imidazoles
The type of hyamine carries out Rational choice；Preferably, imidazoline quaternary ammonium salt includes oleic imidazolinone quaternary ammonium salt and/or aphthenic acids
Imidazoline quaternary ammonium salt, above-mentioned preferred imidazoline quaternary ammonium salt type can make neutralization corrosion inhibiter more effective on metal equipment surface
The protective film of ground formation compact and firm.
Of the invention among the above and in corrosion inhibiter, those skilled in the art can also be according to the prior art to above-mentioned alkynol
Type carry out Rational choice；Preferably, alkynol includes propilolic alcohol and/or butynol, and above-mentioned preferred alkynol type can be into
One step improves the performance for neutralizing corrosion inhibiter.
In order to dissolve above-mentioned first kind component to form neutralization corrosion inhibiter, of the invention among the above and in corrosion inhibiter,
Preferably, the second class component includes organic solvent and desalted water, and above-mentioned organic solvent can be methanol.Using above-mentioned desalination water energy
The salt dissolved in water is enough effectively prevented in equipment surface fouling, while also avoiding Cl-Content further increases, to make
The generation of phenomenon of device corrosion can more effectively be inhibited by neutralizing corrosion inhibiter.In order to effectively inhibit phenomenon of device corrosion
While prevent the waste of organic solvent and desalted water, it is further preferable that organic solvent accounts for the 10~25wt% for neutralizing corrosion inhibiter,
And desalted water accounts for the 10~25wt% for neutralizing corrosion inhibiter.
According to further aspect of the application, provide it is a kind of among the above with the preparation method of corrosion inhibiter, including by first
The step of class component and the second class component mix, wherein first kind component includes imidazoline quaternary ammonium salt, amine substance and alkynol,
Second class group is divided into solvent.
Due to mixing first kind component and the second class component in above-mentioned preparation method, first kind component includes imidazoline season
Ammonium salt, amine substance and alkynol, the second class group are divided into solvent, and first kind component, which accounts for, neutralizes the 60~80% of corrosion inhibiter, and first
Imidazoline quaternary ammonium salt in class component account for neutralize corrosion inhibiter 10~30wt%, amine substance account for neutralize corrosion inhibiter 30~
40wt%, alkynol accounts for the 10~20wt% for neutralizing corrosion inhibiter, to pass through the imidazoles in the first kind component with above-mentioned content
Hyamine and alkynol make the inner surface of metal equipment be capable of forming the protective film of compact and firm, and the amine in first kind component
Substance can be reacted with acid medium, and then make to be prepared has the function of inhibition and neutralization, energy with corrosion inhibiter among the above
Enough effectively inhibit the generation of phenomenon of device corrosion.
Those skilled in the art can according to the prior art among the above with the preparation process of corrosion inhibiter carry out Rational choice；
In order to improve the performance for the neutralization corrosion inhibiter being prepared, in a preferred embodiment, the second class component includes organic
Solvent and desalted water, at this point, as shown in Figure 1, the step of first kind component and the second class component are mixed includes following procedure:
Imidazoline quaternary ammonium salt and desalted water are mixed and stirred for by S1, obtain the first mixed liquid；S2, by organic solvent, amine substance and alkynol
It is added in the first mixed liquid and stirs, obtain neutralizing corrosion inhibiter.
In order to improve the process efficiency of above-mentioned preparation method, in above process S1, it is preferable that by mixed imidazoline
Quaternary ammonium salt and desalted water heat up and stir, and to obtain the first mixed liquid, are preferably warming up to 50~60 DEG C, preferably mixing time be 30~
40min；And, it is preferable that in process S2, mixing time is 60~80min.
According to further aspect of the application, a kind of above-mentioned neutralization corrosion inhibiter answering in hydrogenation plant is additionally provided
With, will include neutralize corrosion inhibiter medium fluid be passed through stripper and its downstream line in hydrogenation plant, it is preferable that in ease up
The additional amount for losing agent is 10~20ppm of medium fluid.
Due to including imidazoline quaternary ammonium salt, amine substance and alkynol in the neutralization corrosion inhibiter that is used in above-mentioned application, first
Class component account for neutralize corrosion inhibiter 60~80%, and the imidazoline quaternary ammonium salt in first kind component account for neutralize corrosion inhibiter 10~
30wt%, amine substance account for the 30~40wt% for neutralizing corrosion inhibiter, and alkynol accounts for the 10~20wt% for neutralizing corrosion inhibiter, to pass through
The stripper and its downstream tube that will be passed through among the above with corrosion inhibiter with the additional amount of 10~20ppm of medium fluid in hydrogenation plant
Line can not only make the inner surface of metal equipment be capable of forming the protective film of compact and firm, additionally it is possible to the acid in medium fluid
Property medium reaction, to realize the effect of inhibition and neutralization, and then effectively inhibit the generation of phenomenon of device corrosion.
Neutralization corrosion inhibiter provided by the present application is further illustrated below in conjunction with embodiment.
Embodiment 1
Neutralization corrosion inhibiter provided in this embodiment includes 50 grams of oleic imidazolinone quaternary ammonium salts, 5 grams of triethylene tetramines, 5 gram third
Alkynol, 35 grams of methanol and 5 grams of desalted waters.
Embodiment 2
Neutralization corrosion inhibiter provided in this embodiment includes 35 grams of oleic imidazolinone quaternary ammonium salts, 25 grams of triethylene tetramines, 20 grams
Propilolic alcohol, 15 grams of methanol and 5 grams of desalted waters.
Embodiment 3
Neutralization corrosion inhibiter provided in this embodiment includes 30 grams of oleic imidazolinone quaternary ammonium salts, 30 grams of triethylene tetramines, 10 grams
Propilolic alcohol, 15 grams of methanol and 15 grams of desalted waters.
Embodiment 4
Neutralization corrosion inhibiter provided in this embodiment includes 10 grams of oleic imidazolinone quaternary ammonium salts, 20 grams of methoxy propanamines, 20 grams
Triethylene tetramine, 20 grams of propilolic alcohols, 20 grams of methanol and 10 grams of desalted waters.
Embodiment 5
Neutralization corrosion inhibiter provided in this embodiment includes 20 grams of oleic imidazolinone quaternary ammonium salts, 20 grams of methoxy propanamines, 15 grams
Triethylene tetramine, 10 grams of propilolic alcohols, 10 grams of methanol and 25 grams of desalted waters.
Embodiment 6
Neutralization corrosion inhibiter provided in this embodiment includes 10 grams of oleic imidazolinone quaternary ammonium salts, 10 grams of naphthenic acid imidazoline quaternary ammoniums
Salt, 10 grams of cyclohexylamine, 20 grams of diethylenetriamines, 15 grams of propilolic alcohols, 25 grams of methanol and 10 grams of desalted waters.
Embodiment 7
Neutralization corrosion inhibiter provided in this embodiment includes 10 grams of oleic imidazolinone quaternary ammonium salts, 10 grams of naphthenic acid imidazoline quaternary ammoniums
Salt, 20 grams of cyclohexylamine, 10 grams of diethylenetriamines, 15 grams of propilolic alcohols, 25 grams of methanol and 10 grams of desalted waters.
Embodiment 8
Neutralization corrosion inhibiter provided in this embodiment includes 10 grams of oleic imidazolinone quaternary ammonium salts, 10 grams of naphthenic acid imidazoline quaternary ammoniums
Salt, 20 grams of cyclohexylamine, 5 grams of diethylenetriamines, 20 grams of propilolic alcohols, 20 grams of methanol and 15 grams of desalted waters.
Embodiment 9
Neutralization corrosion inhibiter provided in this embodiment includes 10 grams of oleic imidazolinone quaternary ammonium salts, 10 grams of naphthenic acid imidazoline quaternary ammoniums
Salt, 30 grams of ethanol amines, 10 grams of triethylene tetramines, 15 grams of propilolic alcohols, 15 grams of methanol and 10 grams of desalted waters.
Comparative example 1
Neutralization corrosion inhibiter provided in this embodiment includes 45 grams of oleic imidazolinone quaternary ammonium salts, 5 grams of triethylene tetramines, 5 gram third
Alkynol, 35 grams of methanol and 10 grams of desalted waters.
Neutralization corrosion inhibiter in above-described embodiment 1 to 9 and comparative example 1 is all made of following preparation method and is prepared:
Oleic imidazolinone quaternary ammonium salt is prepared using using R- cycloalkanes acidic group and oleic acid base in S1, and structural formula is
S2 mixes imidazoline quaternary ammonium salt and desalted water, and simultaneously by mixed imidazoline quaternary ammonium salt and desalted water heating
Stirring, to obtain the first mixed liquid, is preferably warming up to 55 DEG C, mixing time 35min；
Organic solvent, amine substance and alkynol are added in the first mixed liquid and are stirred by S3, obtain neutralizing corrosion inhibiter, stirring
Time is 70min.
It will buy corrosion inhibiter (model RX-101, producer Shaanxi day young oil Chemical Co., Ltd.) be as a comparison in the market
Example 2 is respectively tested for the property the neutralization corrosion inhibiter in above-described embodiment 1 to 9 and comparative example 1 and 2.Test method are as follows: adopt
The condition for adding and being not added neutralization corrosion inhibiter is compared into test, respectively using acid water as corrosive liquid with static metal hanging slice test
It is tested with corrosion inhibition rate obtained by lacing film corrosion weight loss in gas phase on corrosive liquid in liquid phase under corrosive liquid.Test result is as follows table
It is shown.
From above-mentioned test result can be seen that regardless of with the lower neutralization corrosion inhibiter (comparative example 1) of first kind constituent content
It compares, or compared with the corrosion inhibiter (comparative example 2) of conventional commercial, the corrosion inhibiter provided in the above embodiments of the present application 1 to 9 is equal
There can be higher corrosion inhibition, so that above-mentioned corrosion inhibiter can have after being applied in hydrogenation plant by above-mentioned corrosion inhibiter
Effect ground inhibits the generation of phenomenon of device corrosion.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: due to this Shen
The neutralization corrosion inhibiter that please be provided includes first kind component and the second class component, which includes imidazoline quaternary ammonium salt, amine
Substance and alkynol, the second class group are divided into solvent, and first kind component, which accounts for, neutralizes the 60~80% of corrosion inhibiter, and in first kind component
Imidazoline quaternary ammonium salt account for neutralize corrosion inhibiter 10~30wt%, amine substance account for neutralize corrosion inhibiter 30~40wt%, alkynol
10~the 20wt% for neutralizing corrosion inhibiter is accounted for, to pass through imidazoline quaternary ammonium salt and alkynes in the first kind component with above-mentioned content
Alcohol makes the inner surface of metal equipment be capable of forming the protective film of compact and firm, and the amine substance in first kind component can be with acid
Property medium reaction, and then make the effect for realizing inhibition and neutralization with corrosion inhibiter among the above, effectively inhibit phenomenon of device corrosion
Generation.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of neutralization corrosion inhibiter, which is characterized in that including first kind component and the second class component, wherein the first kind group
Dividing includes imidazoline quaternary ammonium salt, amine substance and alkynol, and the second class group is divided into solvent, and the first kind component accounts in described
With the 60~80% of corrosion inhibiter, and in the first kind component, the imidazoline quaternary ammonium salt, which accounts for, described neutralizes the 10 of corrosion inhibiter
~30wt%, the amine substance account for the 30~40wt% for neutralizing corrosion inhibiter, and the alkynol accounts for the neutralization corrosion inhibiter
10~20wt%.
2. neutralization corrosion inhibiter according to claim 1, which is characterized in that the imidazoline quaternary ammonium salt includes oleic imidazolinone
Quaternary ammonium salt and/or naphthenic acid imidazoline quaternary ammonium salt.
3. neutralization corrosion inhibiter according to claim 1, which is characterized in that the amine substance include the first amine component and
Second amine component, first amine groups point are any one or more of including methoxy propanamine, cyclohexylamine and ethanol amine, institute
It is any one or more of including diethylenetriamine, triethylene tetramine and tetraethylenepentamine to state the second amine groups point.
4. neutralization corrosion inhibiter according to claim 3, which is characterized in that the first amine component and second amine
The mass ratio of component is 2:1~4:1, preferably 3:1.
5. neutralization corrosion inhibiter according to claim 1, which is characterized in that the alkynol includes propilolic alcohol and/or butynol.
6. neutralization corrosion inhibiter according to any one of claim 1 to 5, which is characterized in that the second class component includes
Organic solvent and desalted water, the preferably described organic solvent are methanol.
7. neutralization corrosion inhibiter according to claim 6, which is characterized in that the organic solvent accounts for the neutralization corrosion inhibiter
10~25wt%, and the desalted water accounts for the 10~25wt% for neutralizing corrosion inhibiter.
8. application of the neutralization corrosion inhibiter in hydrogenation plant described in a kind of any one of claims 1 to 7, which is characterized in that
It will include that the medium fluid for neutralizing corrosion inhibiter is passed through stripper and its downstream line in the hydrogenation plant.
9. neutralization corrosion inhibiter according to claim 8, which is characterized in that the additional amount for neutralizing corrosion inhibiter is is given an account of
10~20ppm of mass flow body.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250194A (en) * | 2019-06-27 | 2019-09-20 | 胜利油田盛嘉化工有限责任公司 | A kind of oil field composite sterilizer corrosion inhibiter and preparation method thereof |
| CN111441057A (en) * | 2020-05-22 | 2020-07-24 | 北京赛福贝特能源技术服务有限公司 | Oil-soluble neutralization corrosion inhibitor for refinery tower top low-temperature system and preparation method thereof |
| CN111441054A (en) * | 2020-04-14 | 2020-07-24 | 丁双龙 | High-acid high-salt corrosion inhibitor suitable for low-temperature part of oil refining device |
| CN111945168A (en) * | 2020-07-28 | 2020-11-17 | 广东粤首新科技有限公司 | Neutralization corrosion inhibitor and application thereof |
| CN112779051A (en) * | 2019-11-07 | 2021-05-11 | 江苏汉光实业股份有限公司 | Special anticorrosive agent for gasoline and diesel hydrogenation device and preparation method thereof |
| CN112876483A (en) * | 2021-01-18 | 2021-06-01 | 邓颖菁 | Dicationic benzimidazole corrosion inhibitor and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103289745A (en) * | 2012-03-01 | 2013-09-11 | 中国石油天然气股份有限公司 | Scale and corrosion inhibitor for hydrogenation device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103289745A (en) * | 2012-03-01 | 2013-09-11 | 中国石油天然气股份有限公司 | Scale and corrosion inhibitor for hydrogenation device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250194A (en) * | 2019-06-27 | 2019-09-20 | 胜利油田盛嘉化工有限责任公司 | A kind of oil field composite sterilizer corrosion inhibiter and preparation method thereof |
| CN112779051A (en) * | 2019-11-07 | 2021-05-11 | 江苏汉光实业股份有限公司 | Special anticorrosive agent for gasoline and diesel hydrogenation device and preparation method thereof |
| CN111441054A (en) * | 2020-04-14 | 2020-07-24 | 丁双龙 | High-acid high-salt corrosion inhibitor suitable for low-temperature part of oil refining device |
| CN111441057A (en) * | 2020-05-22 | 2020-07-24 | 北京赛福贝特能源技术服务有限公司 | Oil-soluble neutralization corrosion inhibitor for refinery tower top low-temperature system and preparation method thereof |
| CN111945168A (en) * | 2020-07-28 | 2020-11-17 | 广东粤首新科技有限公司 | Neutralization corrosion inhibitor and application thereof |
| CN111945168B (en) * | 2020-07-28 | 2022-05-24 | 广东粤首新科技有限公司 | Neutralization corrosion inhibitor and application thereof |
| CN112876483A (en) * | 2021-01-18 | 2021-06-01 | 邓颖菁 | Dicationic benzimidazole corrosion inhibitor and preparation method thereof |
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Application publication date: 20181218 |