US4384968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic precipitator efficiency enhancement
Assignee: Veolia WTS USA Inc
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Filing: 1981-06-08
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Granted: 1983-05-24
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Expires: 2001-06-08
Abstract
Abstract Method for enhancing the removal of particles from a particle-laden gas stream utilizing an electrostatic precipitator, which comprises treating the gas with morpholine or derivatives thereof. Treated particles are found to also have desirable flow characteristics. Particularly effective compositions for the purpose comprise a combination of the morpholine, or derivative thereof, with an electrostatic precipitator efficiency enhancer, and in particular an alkanolamine.
Inventors
- 👤 David M. Polizzotti
- 👤 Joe C. Steelhammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:15
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/01; B03C3/013
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A composition for treating particle-laden gas streams in an electrostatic precipitator system, which comprises (i) a member selected from the group consisting of morpholine, derivatives of morpholine and mixtures thereof, wherein said morpholine and said morpholine derivatives have the basic structure ##STR6## and (ii) a free base amine alcohol electrostatic precipitator efficiency enhancer.
Claim 2
Dependent Claim
53 words
A composition for treating particle-laden gas streams in an electrostatic precipitator system, which comprises (i) a member selected from the group consisting of morpholine, derivatives of morpholine and mixtures thereof, wherein said morpholine and said morpholine derivatives have the basic structure ##STR6## and (ii) a free base amine alcohol electrostatic precipitator efficiency enhancer.
Claim 3
Dependent Claim
13 words
A composition according to claim 1, wherein the composition is an aqueous solution.
Claim 4
Dependent Claim
27 words
A composition according to claim 1, wherein said enhancer is at least one member selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, methylethanolamine, N-aminoethylethanolamine and N,N-diethylethanolamine.
Claim 5
Dependent Claim
11 words
A composition according to claim 2, wherein the enhancer is diethanolamine.
Claim 6
Dependent Claim
10 words
The composition of claim 3, wherein said enhancer is diethanolamine.
Claim 7
Dependent Claim
14 words
A composition according to claim 1, 4, or 3, wherein the member is morpholine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |