CN113278977A - Special corrosion inhibition dispersant for catalytic depentanizer - Google Patents
Special corrosion inhibition dispersant for catalytic depentanizer Download PDFInfo
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- CN113278977A CN113278977A CN202110316715.8A CN202110316715A CN113278977A CN 113278977 A CN113278977 A CN 113278977A CN 202110316715 A CN202110316715 A CN 202110316715A CN 113278977 A CN113278977 A CN 113278977A
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- morpholine
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- corrosion inhibitor
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- 238000005260 corrosion Methods 0.000 title claims abstract description 94
- 230000007797 corrosion Effects 0.000 title claims abstract description 94
- 239000002270 dispersing agent Substances 0.000 title claims abstract description 75
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 31
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 15
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000003112 inhibitor Substances 0.000 claims abstract description 45
- 239000003513 alkali Substances 0.000 claims abstract description 38
- 150000001412 amines Chemical class 0.000 claims abstract description 36
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 43
- -1 imidazoline triacrylate Chemical compound 0.000 claims description 9
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 claims description 8
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 8
- HSNJERRVXUNQLS-UHFFFAOYSA-N 1-(4-tert-butylphenyl)propan-2-one Chemical compound CC(=O)CC1=CC=C(C(C)(C)C)C=C1 HSNJERRVXUNQLS-UHFFFAOYSA-N 0.000 claims description 6
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 claims description 6
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical group NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims description 5
- FAXDZWQIWUSWJH-UHFFFAOYSA-N 3-methoxypropan-1-amine Chemical compound COCCCN FAXDZWQIWUSWJH-UHFFFAOYSA-N 0.000 claims description 5
- NCXUNZWLEYGQAH-UHFFFAOYSA-N 1-(dimethylamino)propan-2-ol Chemical group CC(O)CN(C)C NCXUNZWLEYGQAH-UHFFFAOYSA-N 0.000 claims description 4
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 claims description 4
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 claims description 4
- NMILGIZTAZXMTM-UHFFFAOYSA-N 4-propylmorpholine Chemical compound CCCN1CCOCC1 NMILGIZTAZXMTM-UHFFFAOYSA-N 0.000 claims description 4
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 claims description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 claims description 4
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 4
- 229960002887 deanol Drugs 0.000 claims description 4
- JQDCIBMGKCMHQV-UHFFFAOYSA-M diethyl(dimethyl)azanium;hydroxide Chemical compound [OH-].CC[N+](C)(C)CC JQDCIBMGKCMHQV-UHFFFAOYSA-M 0.000 claims description 4
- 239000012972 dimethylethanolamine Substances 0.000 claims description 4
- LCEDQNDDFOCWGG-UHFFFAOYSA-N morpholine-4-carbaldehyde Chemical compound O=CN1CCOCC1 LCEDQNDDFOCWGG-UHFFFAOYSA-N 0.000 claims description 4
- RWIVICVCHVMHMU-UHFFFAOYSA-N n-aminoethylmorpholine Chemical compound NCCN1CCOCC1 RWIVICVCHVMHMU-UHFFFAOYSA-N 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 claims description 4
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 claims description 4
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 8
- 238000001833 catalytic reforming Methods 0.000 abstract description 6
- 150000003863 ammonium salts Chemical class 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 239000011833 salt mixture Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 235000019270 ammonium chloride Nutrition 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000006298 dechlorination reaction Methods 0.000 description 4
- YGUPEIOJELOBHB-KTKRTIGZSA-N CCCCCCCC\C=C/CCCCCCC(C(O)=O)CCN Chemical compound CCCCCCCC\C=C/CCCCCCC(C(O)=O)CCN YGUPEIOJELOBHB-KTKRTIGZSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
-
- 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
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/10—Inhibiting corrosion during distillation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F15/00—Other methods of preventing corrosion or incrustation
- C23F15/005—Inhibiting incrustation
Abstract
The invention belongs to the technical field of corrosion inhibition dispersants, and relates to a special corrosion inhibition dispersant for a catalytic depentanizer, which comprises 0-10% of organic amine, 2-10% of amphoteric imidazoline corrosion inhibition dispersant, 1-20% of super-alkali dispersant and 2-10% of morpholine corrosion inhibitor. The corrosion inhibition dispersing agent has the beneficial effects that the corrosion inhibition dispersing agent has strong corrosion resistance, and equipment and pipelines are not required to be added; the ammonium salt scale existing in the stripping and dispersing system can be gradually replaced to generate the organic amine salt mixture with low melting point, so that the formation of the ammonium salt scale is effectively inhibited, then a layer of firm and compact protective film is formed on the metal surface to inhibit the metal corrosion, meanwhile, the metal surface is prevented from being attached by the salt scale again, and the safe, stable and continuous operation of the catalytic reforming device depentanizer is ensured.
Description
Technical Field
The invention belongs to the technical field of corrosion inhibition dispersants, and particularly relates to a special corrosion inhibition dispersant for a catalytic depentanizer.
Background
Catalytic reforming refers to a process of converting naphtha fraction into reformate rich in aromatics and producing hydrogen at a certain temperature, pressure, hydrogen presence and in the presence of a catalyst. Because the catalytic reforming device uses a bi (poly) metal catalyst, the acid center of the bi (poly) metal catalyst is composed of hydroxyl on carrier alumina and added chlorine, when the system contains water, the chlorine on the catalyst can be lost, and HCl is generated after the system enters a reaction system. Meanwhile, the raw oil contains a trace amount of nitrogen-containing compounds, NH3 is generated in the reactor, and the NH3 and HCl enter a subsequent fractionation system together. A majority of domestic catalytic reforming devices adopt UOP process packages, a water injection line is not usually arranged in front of heat exchange equipment at the top of a depentanizer, NH3 and HCl meet in a gas phase to generate NH4Cl, NH4Cl sublimates at 350 ℃, NH4Cl is likely to be deposited when the temperature is lower than the temperature, scale is formed and corrosion is caused, and the corrosion at the top of the depentanizer is the most serious in a catalytic reloading device.
Aiming at the problems of scale formation of NH4Cl and corrosion under the scale, the current domestic solution mainly comprises the steps of controlling the water-chlorine balance of a reforming catalyst, monitoring the use effect of a dechlorination tank, injecting water and flushing on line, adding a dechlorination flow, injecting a neutralizing agent, injecting a corrosion inhibitor, enhancing process management and the like. However, these methods all have obvious limitations and cannot be popularized in a large range, and along with the heavy and inferior crude oil, the corrosion prevention effect is increasingly poor: controlling the reforming catalyst water chlorine balance, monitoring dechlorination tank usage and enhancing process management only slightly reduces NH4Cl fouling and cannot be completely eradicated, and corrosion leakage still occurs.
The operation fluctuation is large and the energy consumption is high during on-line water injection and flushing, and certain influence is brought to production; the addition of a dechlorination process requires higher investment and new equipment land, and the old device is difficult to transform; the method for injecting the neutralizing agent and the corrosion inhibitor is only effective for specific oil products, and a large amount of water needs to be injected at the same time, otherwise, the neutralizing agent and the corrosion inhibitor can also form scales, so that the special corrosion inhibition dispersing agent for the catalytic depentanizer is provided for solving the problems.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a special corrosion inhibition dispersing agent for a catalytic de-pentylene tower, which solves the technical problems of inconvenient use, increased equipment and pipelines and incapability of forming a protective film.
In order to achieve the purpose, the invention provides the following technical scheme: a special corrosion inhibition dispersant for a catalytic depentanizer comprises 0-10% of organic amine, 2-10% of amphoteric imidazoline corrosion inhibition dispersant, 1-20% of super-alkali dispersant and 2-10% of morpholine corrosion inhibitor.
As a further scheme of the invention: the organic amine comprises the following components;
the first method comprises the following steps: the organic amine is composed of dimethylethanolamine;
and the second method comprises the following steps: the organic amine is dimethyl isopropanolamine;
and the third is that: the organic amine is composed of methoxypropylamine;
and fourthly: the organic amine is diglycolamine;
and a fifth mode: the amine is composed of polyether amine.
As a further scheme of the invention: the amphoteric imidazoline corrosion-inhibition dispersant consists of;
the first method comprises the following steps: the amphoteric imidazoline corrosion-inhibition dispersant is composed of aminoethyl oleic acid imidazoline triacrylic acid;
and the second method comprises the following steps: the amphoteric imidazoline corrosion inhibition dispersant is composed of aminoethyl cycloalkyl imidazoline triacrylate.
As a further scheme of the invention: the morpholine corrosion inhibitor consists of;
the first method comprises the following steps: the morpholine corrosion inhibitor is composed of morpholine;
and the second method comprises the following steps: the morpholine corrosion inhibitor is composed of aminoethyl morpholine;
and the third is that: the morpholine corrosion inhibitor is composed of methyl morpholine;
and fourthly: the morpholine corrosion inhibitor is composed of methyl morpholine oxide;
and a fifth mode: the morpholine corrosion inhibitor is composed of formyl morpholine;
and a fifth mode: the morpholine corrosion inhibitor is composed of ethyl morpholine;
and a sixth mode: the morpholine corrosion inhibitor is composed of propyl morpholine;
seventh, the method comprises: the morpholine corrosion inhibitor is composed of acryloyl morpholine.
As a further scheme of the invention: the super-strong alkali type dispersant consists of;
the first method comprises the following steps: the super-strong alkali type dispersant is composed of tetramethyl ammonium hydroxide;
and the second method comprises the following steps: the super-strong alkali type dispersing agent is composed of tetraethyl ammonium hydroxide;
and the third is that: the super-strong alkali type dispersant consists of triethyl methyl ammonium hydroxide;
and fourthly: the super strong alkali type dispersant is composed of diethyl dimethyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant is composed of tetrapropyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant consists of tetrabutyl ammonium hydroxide;
and a sixth mode: the super-strong alkali type dispersant is composed of benzyl trimethyl ammonium hydroxide.
Compared with the prior art, the invention has the beneficial effects that: the corrosion inhibition dispersing agent has strong corrosion resistance, is suitable for all catalytic reforming devices to depentanize the towers, is convenient to use, and does not need to increase equipment and pipelines; the ammonium salt scale existing in the stripping and dispersing system can be gradually replaced to generate the organic amine salt mixture with low melting point, so that the formation of the ammonium salt scale is effectively inhibited, then a layer of firm and compact protective film is formed on the metal surface to inhibit the metal corrosion, meanwhile, the metal surface is prevented from being attached by the salt scale again, and the safe, stable and continuous operation of the catalytic reforming device depentanizer is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides the following technical scheme: a special corrosion inhibition dispersant for a catalytic depentanizer comprises 0-10% of organic amine, 2-10% of amphoteric imidazoline corrosion inhibition dispersant, 1-20% of super-alkali dispersant and 2-10% of morpholine corrosion inhibitor.
Specifically, the organic amine comprises the following components;
the first method comprises the following steps: the organic amine is composed of dimethylethanolamine;
and the second method comprises the following steps: the organic amine is dimethyl isopropanolamine;
and the third is that: the organic amine is composed of methoxypropylamine;
and fourthly: the organic amine is diglycolamine;
and a fifth mode: the amine is composed of polyether amine.
Specifically, the amphoteric imidazoline corrosion inhibition dispersant consists of;
the first method comprises the following steps: the amphoteric imidazoline corrosion-inhibition dispersant is composed of aminoethyl oleic acid imidazoline triacrylic acid;
and the second method comprises the following steps: the amphoteric imidazoline corrosion inhibition dispersant is composed of aminoethyl cycloalkyl imidazoline triacrylate.
Specifically, the morpholine corrosion inhibitor comprises;
the first method comprises the following steps: the morpholine corrosion inhibitor is composed of morpholine;
and the second method comprises the following steps: the morpholine corrosion inhibitor is composed of aminoethyl morpholine;
and the third is that: the morpholine corrosion inhibitor is composed of methyl morpholine;
and fourthly: the morpholine corrosion inhibitor is composed of methyl morpholine oxide;
and a fifth mode: the morpholine corrosion inhibitor is composed of formyl morpholine;
and a fifth mode: the morpholine corrosion inhibitor is composed of ethyl morpholine;
and a sixth mode: the morpholine corrosion inhibitor is composed of propyl morpholine;
seventh, the method comprises: the morpholine corrosion inhibitor is composed of acryloyl morpholine.
Specifically, the super-strong alkali type dispersant consists of;
the first method comprises the following steps: the super-strong alkali type dispersant is composed of tetramethyl ammonium hydroxide;
and the second method comprises the following steps: the super-strong alkali type dispersing agent is composed of tetraethyl ammonium hydroxide;
and the third is that: the super-strong alkali type dispersant consists of triethyl methyl ammonium hydroxide;
and fourthly: the super strong alkali type dispersant is composed of diethyl dimethyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant is composed of tetrapropyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant consists of tetrabutyl ammonium hydroxide;
and a sixth mode: the super-strong alkali type dispersant is composed of benzyl trimethyl ammonium hydroxide.
Specifically, for example, 6% of diglycolamine, 5% of aminoethyloleic imidazoline triacrylate, 10% of morpholine, 10% of triethylmethylammonium hydroxide, and the balance water are used.
Heating water in a porous water bath to 85 +/-1 ℃, pouring 250mL of 30% ammonium chloride solution serving as a corrosion medium into a 250mL conical flask with a plug, cleaning and weighing a 20 cm carbon steel test piece with a specified size, suspending the test piece in the corrosion medium at 85 +/-1 ℃, putting the conical flask containing the corrosion solution and a hanging piece into the porous water bath, soaking for 6 hours, taking out the test piece, observing the surface condition, and measuring the corrosion speed according to the weight loss of the test piece.
Concentration and corrosion rate ratio table
Example 2
The invention provides the following technical scheme: a special corrosion inhibition dispersant for a catalytic depentanizer comprises 0-10% of organic amine, 2-10% of amphoteric imidazoline corrosion inhibition dispersant, 1-20% of super-alkali dispersant and 2-10% of morpholine corrosion inhibitor.
Specifically, the organic amine comprises the following components;
the first method comprises the following steps: the organic amine is composed of dimethylethanolamine;
and the second method comprises the following steps: the organic amine is dimethyl isopropanolamine;
and the third is that: the organic amine is composed of methoxypropylamine;
and fourthly: the organic amine is diglycolamine;
and a fifth mode: the amine is composed of polyether amine.
Specifically, the amphoteric imidazoline corrosion inhibition dispersant consists of;
the first method comprises the following steps: the amphoteric imidazoline corrosion-inhibition dispersant is composed of aminoethyl oleic acid imidazoline triacrylic acid;
and the second method comprises the following steps: the amphoteric imidazoline corrosion inhibition dispersant is composed of aminoethyl cycloalkyl imidazoline triacrylate.
Specifically, the morpholine corrosion inhibitor comprises;
the first method comprises the following steps: the morpholine corrosion inhibitor is composed of morpholine;
and the second method comprises the following steps: the morpholine corrosion inhibitor is composed of aminoethyl morpholine;
and the third is that: the morpholine corrosion inhibitor is composed of methyl morpholine;
and fourthly: the morpholine corrosion inhibitor is composed of methyl morpholine oxide;
and a fifth mode: the morpholine corrosion inhibitor is composed of formyl morpholine;
and a fifth mode: the morpholine corrosion inhibitor is composed of ethyl morpholine;
and a sixth mode: the morpholine corrosion inhibitor is composed of propyl morpholine;
seventh, the method comprises: the morpholine corrosion inhibitor is composed of acryloyl morpholine.
Specifically, the super-strong alkali type dispersant consists of;
the first method comprises the following steps: the super-strong alkali type dispersant is composed of tetramethyl ammonium hydroxide;
and the second method comprises the following steps: the super-strong alkali type dispersing agent is composed of tetraethyl ammonium hydroxide;
and the third is that: the super-strong alkali type dispersant consists of triethyl methyl ammonium hydroxide;
and fourthly: the super strong alkali type dispersant is composed of diethyl dimethyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant is composed of tetrapropyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant consists of tetrabutyl ammonium hydroxide;
and a sixth mode: the super-strong alkali type dispersant is composed of benzyl trimethyl ammonium hydroxide.
Specifically, for example, in another embodiment of the present invention, methoxypropylamine is 7%, aminoethyl cycloalkylimidazoline triacrylate is 6%, morpholine is 7%, triethyl methyl ammonium hydroxide is 20%, and the remainder is water.
Heating water in a porous water bath to 85 +/-1 ℃, pouring 250mL of 15% ammonium chloride solution serving as a corrosion medium into a 250mL conical flask with a plug, cleaning and weighing a 20 cm carbon steel test piece with a specified size, placing 0.2g of sintered NH4Cl scale on the surface, suspending the sintered NH4Cl scale in the corrosion medium at 85 +/-1 ℃, placing the conical flask containing the corrosion solution and the hanging piece into the porous water bath, soaking for 6h, taking out the test piece, observing the surface condition, measuring the corrosion speed according to the weight loss of the test piece, and drying the NH4Cl scale to measure the weight loss.
Concentration and corrosion rate ratio table
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either internally of the two elements or in an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise explicitly specified or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature being "on," "above," and "above" a second feature may be directly or diagonally above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this specification can be combined and combined by those skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are illustrative and not to be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.
Claims (5)
1. A special corrosion inhibition dispersant for a catalytic depentanizer comprises organic amine, amphoteric imidazoline corrosion inhibition dispersant, super-strong alkali dispersant and morpholine corrosion inhibitor, and is characterized in that: the content of the organic amine is 0-10%, the content of the amphoteric imidazoline corrosion-inhibition dispersant is 2-10%, the content of the super-strong alkali dispersant is 1-20%, and the content of the morpholine corrosion inhibitor is 2-10%.
2. The special corrosion inhibition dispersant for the catalytic depentanizer according to claim 1, characterized in that: the organic amine comprises the following components;
the first method comprises the following steps: the organic amine is composed of dimethylethanolamine;
and the second method comprises the following steps: the organic amine is dimethyl isopropanolamine;
and the third is that: the organic amine is composed of methoxypropylamine;
and fourthly: the organic amine is diglycolamine;
and a fifth mode: the amine is composed of polyether amine.
3. The special corrosion inhibition dispersant for the catalytic depentanizer according to claim 1, characterized in that: the amphoteric imidazoline corrosion-inhibition dispersant consists of;
the first method comprises the following steps: the amphoteric imidazoline corrosion inhibition dispersant is composed of aminoethyl oleic imidazoline triacrylate;
and the second method comprises the following steps: the amphoteric imidazoline corrosion inhibition dispersant is composed of aminoethyl cycloalkyl imidazoline triacrylate.
4. The special corrosion inhibition dispersant for the catalytic depentanizer according to claim 1, characterized in that: the morpholine corrosion inhibitor consists of;
the first method comprises the following steps: the morpholine corrosion inhibitor is composed of morpholine;
and the second method comprises the following steps: the morpholine corrosion inhibitor is composed of aminoethyl morpholine;
and the third is that: the morpholine corrosion inhibitor is composed of methyl morpholine;
and fourthly: the morpholine corrosion inhibitor is composed of methyl morpholine oxide;
and a fifth mode: the morpholine corrosion inhibitor is composed of formyl morpholine;
and a fifth mode: the morpholine corrosion inhibitor is composed of ethyl morpholine;
and a sixth mode: the morpholine corrosion inhibitor is composed of propyl morpholine;
seventh, the method comprises: the morpholine corrosion inhibitor is composed of acryloyl morpholine.
5. The special corrosion inhibition dispersant for the catalytic depentanizer according to claim 1, characterized in that: the super-strong alkali type dispersant consists of;
the first method comprises the following steps: the super-strong alkali type dispersant is composed of tetramethyl ammonium hydroxide;
and the second method comprises the following steps: the super-strong alkali type dispersing agent is composed of tetraethyl ammonium hydroxide;
and the third is that: the super-strong alkali type dispersant consists of triethyl methyl ammonium hydroxide;
and fourthly: the super strong alkali type dispersant is composed of diethyl dimethyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant is composed of tetrapropyl ammonium hydroxide;
and a fifth mode: the super-strong alkali type dispersant consists of tetrabutyl ammonium hydroxide;
and a sixth mode: the super-strong alkali type dispersant is composed of benzyl trimethyl ammonium hydroxide.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558940A (en) * | 2001-09-27 | 2004-12-29 | ���ŷ� | Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates |
| CN104962922A (en) * | 2015-06-04 | 2015-10-07 | 西安瑞杰油田物资实业开发有限公司 | Corrosion inhibition descaling agent for blast furnace gas excess pressure turbine power generation device and preparing method of corrosion inhibition descaling agent |
| CN106518770A (en) * | 2016-09-30 | 2017-03-22 | 宿迁明江化工有限公司 | Preparation method of novel water soluble and non-salt soluble imidazoline corrosion inhibitor and application |
| CN107059018A (en) * | 2017-05-27 | 2017-08-18 | 安徽卓远化工科技有限公司 | A kind of refinery's corrosion inhibiter and preparation method thereof |
| CN109023381A (en) * | 2018-10-25 | 2018-12-18 | 中国石油大学(华东) | Neutralize corrosion inhibiter and its preparation method and application |
| CN111690937A (en) * | 2020-06-22 | 2020-09-22 | 上海友豪科技股份有限公司 | Corrosion inhibitor for atmospheric and vacuum distillation unit and preparation method thereof |
-
2021
- 2021-03-24 CN CN202110316715.8A patent/CN113278977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558940A (en) * | 2001-09-27 | 2004-12-29 | ���ŷ� | Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates |
| CN104962922A (en) * | 2015-06-04 | 2015-10-07 | 西安瑞杰油田物资实业开发有限公司 | Corrosion inhibition descaling agent for blast furnace gas excess pressure turbine power generation device and preparing method of corrosion inhibition descaling agent |
| CN106518770A (en) * | 2016-09-30 | 2017-03-22 | 宿迁明江化工有限公司 | Preparation method of novel water soluble and non-salt soluble imidazoline corrosion inhibitor and application |
| CN107059018A (en) * | 2017-05-27 | 2017-08-18 | 安徽卓远化工科技有限公司 | A kind of refinery's corrosion inhibiter and preparation method thereof |
| CN109023381A (en) * | 2018-10-25 | 2018-12-18 | 中国石油大学(华东) | Neutralize corrosion inhibiter and its preparation method and application |
| CN111690937A (en) * | 2020-06-22 | 2020-09-22 | 上海友豪科技股份有限公司 | Corrosion inhibitor for atmospheric and vacuum distillation unit and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 周泽琳: "《日化产品检验技术》", 30 April 2014 * |
| 张雪昀: "《药用化学基础.2，有机化学》", 31 May 2011 * |
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