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Inhibition of corrosion in boiler systems with etheramines
US9376756B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9376756-B2 |
| Application number | US-201414285686-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 23, 2014 |
| Priority date | May 15, 2012 |
| Publication date | Jun 28, 2016 |
| Grant date | Jun 28, 2016 |
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- Title
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Abstract
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Aminoethers are used as corrosion inhibitors in boiler systems in which a working fluid comprising water with an aminoether corrosion inhibitor is circulated from a heater to a utilization site at which the working fluid gives up energy and decreases in temperature. A preferred class of aminoethers are the alkoxytriethyleneglycol-tert-alkylamines such as methoxy triethyleneglycol-tert-butylamine.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of inhibiting corrosion in a boiler system in which a working fluid comprising water is circulated from a heater to a utilization site at which the working fluid gives up energy and decreases in temperature, comprising adding an aminoether corrosion inhibitor to the water; wherein the aminoether comprises diamino ether and an aminoether alcohol represented by the respective formulae: where x is an integer ranging from 2 to 6. 2. A method according to claim 1 wherein the boiler system is a single phase, closed loop system in which the water is heated in the heater. 3. A method according to claim 1 wherein the boiler system is a closed loop system in which the water is converted to steam in the heater and condensed to water in at least one condensation site in the circuit. 4. A method according to claim 3 wherein the steam temperature is up to about 250° C. 5. A method according to claim 1 wherein the weight ratio of the diamino ether to the aminoether alcohol ranges from 0.23:1 to 2.3:1. 6. A method according to claim 1 in which the aminoether comprises a mixture of bis-(tert-butylaminoethoxy)ethane and tert-butyl aminoethoxy ethoxy ethanol.
Assignees
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Classifications
Methods of steam generation characterised by form of heating method · CPC title
- F22B37/025Primary
Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point · CPC title
- C23F11/146Primary
containing a multiple nitrogen-to-carbon bond · CPC title
Amines; Quaternary ammonium compounds · CPC title
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- What does patent US9376756B2 cover?
- Aminoethers are used as corrosion inhibitors in boiler systems in which a working fluid comprising water with an aminoether corrosion inhibitor is circulated from a heater to a utilization site at which the working fluid gives up energy and decreases in temperature. A preferred class of aminoethers are the alkoxytriethyleneglycol-tert-alkylamines such as methoxy triethyleneglycol-tert-butylamine.
- Who is the assignee on this patent?
- Siskin Michael, Fedich Robert Basil, Daage Michel A, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F22B37/025. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).