NL8901407A - Alkyl or alkylamino-ethyl-hexanol-ethoxy-phosphate inhibitors - for corrosion protection of steel against liquid urea and ammonium nitrate fertilisers - Google Patents
Alkyl or alkylamino-ethyl-hexanol-ethoxy-phosphate inhibitors - for corrosion protection of steel against liquid urea and ammonium nitrate fertilisers Download PDFInfo
- Publication number
- NL8901407A NL8901407A NL8901407A NL8901407A NL8901407A NL 8901407 A NL8901407 A NL 8901407A NL 8901407 A NL8901407 A NL 8901407A NL 8901407 A NL8901407 A NL 8901407A NL 8901407 A NL8901407 A NL 8901407A
- Authority
- NL
- Netherlands
- Prior art keywords
- hexanol
- alkyl
- ethyl
- ethoxy
- corrosion protection
- Prior art date
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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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/167—Phosphorus-containing compounds
- C23F11/1673—Esters of phosphoric or thiophosphoric acids
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Fertilizers (AREA)
Abstract
Description
Inhibitor voor corrosieprotectie van staal in vloeibare stikstofhoudende meststoffen.Inhibitor for corrosion protection of steel in liquid nitrogenous fertilizers.
De onderhavige uitvinding heeft betrekking op een inhibitor voor corrosieprotectie van staal in vloeibare stikstofhoudende meststoffen, welke inhibitor is gebaseerd op carbamide en ammoniumnitraat.The present invention relates to an inhibitor for corrosion protection of steel in liquid nitrogenous fertilizers, which inhibitor is based on carbamide and ammonium nitrate.
Bekend is, dat inhibitoren worden gebruikt voor vloeibare stikstofhoudende meststoffen: chromaten, vrije ammonia, boraten, arseenverbindingen, koperverbindingen, alkylmetaalhydroxiden, ammoniumthiocyanaat, anorganische fosfaten, thiosulfaten, metaalaminocomplexen, gluconzuur etc. (1, 2).Inhibitors are known to be used for liquid nitrogenous fertilizers: chromates, free ammonia, borates, arsenic compounds, copper compounds, alkyl metal hydroxides, ammonium thiocyanate, inorganic phosphates, thiosulfates, metal amino complexes, gluconic acid, etc. (1, 2).
Nadelen van de bekende inhibitoren zijn: hoge optimale concentraties zijn nodig, terwijl als gevolg van de onvoldoende goede inhibitie-eigenschappen een verslechtering van de eigenschappen van de oplossing wordt waargenomen (de vorming van neerslagen van oxiden, hydroxiden en fosfaten van ijzer als een corrosieprodukt) hetgeen de machinale toepassing van vloeibare stikstofhoudende meststoffen belemmert. Bovendien zijn sommige van de genoemde meststoffen toxisch.Disadvantages of the known inhibitors are: high optimal concentrations are necessary, while due to the insufficiently good inhibition properties a deterioration of the properties of the solution is observed (the formation of deposits of oxides, hydroxides and phosphates of iron as a corrosion product). which hinders the mechanical application of liquid nitrogenous fertilizers. In addition, some of the listed fertilizers are toxic.
Het doel van de onderhavige uitvinding is het voorzien in een niet-toxische inhibitor met hoge efficiency voor corrosieprotectie van stalen inrichtingen, die worden toegepast in een medium van vloeibare stikstofhoudende meststoffen - carbamide (28-35%), ammoniumnitraat (37-44%) en water (35-21%).The object of the present invention is to provide a non-toxic, high efficiency inhibitor for corrosion protection of steel devices used in a medium of liquid nitrogen fertilizers - carbamide (28-35%), ammonium nitrate (37-44%) and water (35-21%).
Dit doel wordt bereikt door een inhibitor, die een alkali of alkylylaminozout van 2-ethylhexanolethoxyfosfaat is in de vorm van een monoester (50-60 mol%) met de formule:This object is achieved by an inhibitor which is an alkali or alkylylamino salt of 2-ethylhexanolethoxyphosphate in the form of a monoester (50-60 mol%) of the formula:
en een diëster (20-40 mol%) met de formule:and a diester (20-40 mol%) with the formula:
waarin "n" de mate van ethoxylering is: van 4 tot 8.where "n" is the degree of ethoxylation: from 4 to 8.
De inhibitor wordt gebruikt in concentraties van 0,005-0,2% met betrekking tot de vloeibare stikstofhoudende meststof bij temperaturen van 20-40eC.The inhibitor is used in concentrations of 0.005-0.2% with respect to the liquid nitrogenous fertilizer at temperatures of 20-40 ° C.
De voordelen van de voorgestelde inhibitor liggen daarin, dat deze goede inhibitie-eigenschappen bezit bij lage concentraties, waardoor de vorming van neerslagen van oxiden, hydroxiden en fosfaten van ijzer belemmerd wordt en die tegelijkertijd niet-toxisch is.The advantages of the proposed inhibitor lie in that it has good inhibition properties at low concentrations, which prevents the formation of deposits of oxides, hydroxides and phosphates of iron and which is at the same time non-toxic.
De uitvinding wordt aan de hand van de volgende voorbeelden nader toegelicht:The invention is further illustrated by the following examples:
VOORBEELD IEXAMPLE I
Een inhibitor werd bereid uit alkali of alkylol-aminozouten van 2-ethylhexanoltetraethoxyfosfaat in concentraties van 0,005-0,2% ten opzichte van vloeibare stikstof-houdende meststof. De proeven werden uitgevoerd met monsters van een lage-koolstofstaal in een medium van vloeibare stik-stofhoudende meststof bij een pH van 6,5-7 en een temperatuur van het medium van 20-40°C.An inhibitor was prepared from alkali or alkylol amino salts of 2-ethylhexanol tetraethoxy phosphate at concentrations of 0.005-0.2% relative to liquid nitrogen fertilizer. The tests were performed on low carbon steel samples in a liquid nitrogen fertilizer medium at a pH of 6.5-7 and a medium temperature of 20-40 ° C.
De resultaten uit de proeven zijn weergegeven in de onderstaande Tabel. De beschermende werking rijkt tot 99,5% bij 20eC en 99,3% bij 40°C.The results from the tests are shown in the Table below. The protective effect is up to 99.5% at 20 ° C and 99.3% at 40 ° C.
VOORBEELD IIEXAMPLE II
Een inhibitor werd bereid uit alkali of alkylol-aminozouten van 2-ethylhexanoloctaethoxyfosfaat in concentraties van 0,005-0,2% ten opzichte van de vloeibare stikstof houdende meststof. De proeven werden uitgevoerd met monsters van een lage-koolstofstaal in een medium van vloeibare stikstofhoudende meststof bij een pH van 6,5-7 en een temperatuur van 20-40eC.An inhibitor was prepared from alkali or alkylol amino salts of 2-ethylhexanoloctaethoxyphosphate in concentrations of 0.005-0.2% relative to the liquid nitrogen fertilizer. The tests were performed with samples of a low carbon steel in a medium of liquid nitrogen fertilizer at a pH of 6.5-7 and a temperature of 20-40 ° C.
De resultaten uit de proeven zijn weergegeven in de onderstaande Tabel.The results from the tests are shown in the Table below.
Het beschermende effect rijkt tot 99,3% bij 20°c en 99,0% bij 40°C.The protective effect is up to 99.3% at 20 ° C and 99.0% at 40 ° C.
TABELTABLE
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG8000487A BG45641A1 (en) | 1987-06-05 | 1987-06-05 | Inhibitor for corrosion protection of steel in liquid nitrogen feltilizer |
| BG8000487 | 1987-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8901407A true NL8901407A (en) | 1991-01-02 |
Family
ID=3919109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8901407A NL8901407A (en) | 1987-06-05 | 1989-06-02 | Alkyl or alkylamino-ethyl-hexanol-ethoxy-phosphate inhibitors - for corrosion protection of steel against liquid urea and ammonium nitrate fertilisers |
Country Status (5)
| Country | Link |
|---|---|
| BG (1) | BG45641A1 (en) |
| CS (1) | CS377088A2 (en) |
| HU (1) | HUT47982A (en) |
| NL (1) | NL8901407A (en) |
| RO (1) | RO102102B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2689498A1 (en) * | 1992-04-07 | 1993-10-08 | Francais Prod Ind Cfpi | Agent to inhibit corrosive properties of nitrogenated fertiliser solns. - comprises linear phosphate acid ester(s) |
| EP0567212A1 (en) * | 1992-04-21 | 1993-10-27 | Petrolite Corporation | The reaction product of nitrogen bases and phosphate esters as corrosion inhibitors |
| US5611991A (en) * | 1994-05-24 | 1997-03-18 | Champion Technologies, Inc. | Corrosion inhibitor containing phosphate groups |
| US5611992A (en) * | 1994-05-24 | 1997-03-18 | Champion Technologies Inc. | Corrosion inhibitor blends with phosphate esters |
-
1987
- 1987-06-05 BG BG8000487A patent/BG45641A1/en unknown
- 1987-06-05 HU HU289888A patent/HUT47982A/hu unknown
-
1988
- 1988-06-01 RO RO13378688A patent/RO102102B1/en unknown
- 1988-06-01 CS CS883770A patent/CS377088A2/en unknown
-
1989
- 1989-06-02 NL NL8901407A patent/NL8901407A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2689498A1 (en) * | 1992-04-07 | 1993-10-08 | Francais Prod Ind Cfpi | Agent to inhibit corrosive properties of nitrogenated fertiliser solns. - comprises linear phosphate acid ester(s) |
| EP0567212A1 (en) * | 1992-04-21 | 1993-10-27 | Petrolite Corporation | The reaction product of nitrogen bases and phosphate esters as corrosion inhibitors |
| USRE36291E (en) * | 1992-04-21 | 1999-09-07 | Baker Hughes Incorporated | Reaction product of nitrogen bases and phosphate esters as corrosion inhibitors |
| US5611991A (en) * | 1994-05-24 | 1997-03-18 | Champion Technologies, Inc. | Corrosion inhibitor containing phosphate groups |
| US5611992A (en) * | 1994-05-24 | 1997-03-18 | Champion Technologies Inc. | Corrosion inhibitor blends with phosphate esters |
Also Published As
| Publication number | Publication date |
|---|---|
| HUT47982A (en) | 1989-04-28 |
| CS377088A2 (en) | 1990-02-12 |
| RO102102B1 (en) | 1992-08-10 |
| BG45641A1 (en) | 1989-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |