Patent US4422940A successfully refreshed from Google Patents.
US4422940A
Expired / Lapsed
US
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Method of neutralizing and detoxifying wastes containing organic compounds
Assignee: LOMAC Inc
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Filing: 1982-05-17
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Granted: 1983-12-27
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Expires: 2002-05-17
Abstract
Abstract A method of neutralizing and detoxifying waste material containing both an acid and a toxic organic compound. The waste material is combined with sufficient oil and sufficient caustic to form a pumpable slurry having a pH of 7 or higher. The oil is then separated from the slurry leaving a dry, deoiled material, containing a salt and the toxic organic compound. This material is pyrolyzed at a temperature below the melting point of the salt and sufficiently high to vaporize the toxic organic compound. The resultant vapor is then incinerated to detoxify the vaporized organic compound.
Inventors
- 👤 James L. Cousino
- 👤 James A. Nalewick
- 👤 Blair H. Hills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:02
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/10; C02F11/002; C02F11/004; Y; Y02; Y02W; Y02W10/00; Y02W10/40; Y10; Y10S; Y10S159/00; Y10S159/905
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
107 words
A method for treating waste material containing both an acid and a toxic organic compound comprising the steps of: combining said waste material with sufficient oil and sufficient caustic to form a pumpable slurry having a pH of 7 or higher, said pumpable slurry containing water, a salt, and said toxic organic compound; separating said oil from said pumpable slurry to form a deoiled material containing said salt and said toxic organic compound; pyrolyzing said deoiled material at a temperature below the melting point of said salt but sufficiently high to vaporize said toxic organic compound; and incinerating the resultant vapor to detoxify said vaporized organic compound.
Claim 2
Independent Claim
107 words
A method for treating waste material containing both an acid and a toxic organic compound comprising the steps of: combining said waste material with sufficient oil and sufficient caustic to form a pumpable slurry having a pH of 7 or higher, said pumpable slurry containing water, a salt, and said toxic organic compound; separating said oil from said pumpable slurry to form a deoiled material containing said salt and said toxic organic compound; pyrolyzing said deoiled material at a temperature below the melting point of said salt but sufficiently high to vaporize said toxic organic compound; and incinerating the resultant vapor to detoxify said vaporized organic compound.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1 wherein said caustic is a concentrated caustic.
Claim 4
Dependent Claim
29 words
A method as defined in claim 2 further comprising combining said pumpable slurry with an emulsifier to facilitate emulsification of said water and said salt within said pumpable slurry.
Claim 5
Dependent Claim
29 words
A method as defined in claim 1 further comprising combining said pumpable slurry with an emulsifier to facilitate emulsification of said water and said salt within said pumpable slurry.
Claim 6
Dependent Claim
25 words
A method as defined in claim 1 further comprising the step of separating said water from said pumpable slurry prior to said oil separation step.
Claim 7
Dependent Claim
23 words
A method as defined in claim 5 further comprising at least one of steps of biologically treating and carbon treating said separated water.
Claim 8
Dependent Claim
19 words
A method as defined in claim 5 further comprising the step of recovering said heat from said pyrolyzed material.
Claim 9
Dependent Claim
21 words
A method as defined in claim 7 further comprising the step of using said recovered heat in said water separation step.
Claim 10
Dependent Claim
18 words
A method as defined in claim 5 further comprising the step of recovering heat from the incinerated vapor.
Claim 11
Dependent Claim
21 words
A method as defined in claim 9 further comprising the step of using said recovered heat in said water separation step.
Claim 12
Dependent Claim
17 words
A method as defined in claim 1 wherein said waste material comprises material from a settling pond.
Claim 13
Dependent Claim
34 words
A method as defined in claim 1 wherein said pumpable slurry contains solvents soluble in said oil, and wherein said method further comprises separating said solvents from said oil after said oil separation step.
Claim 14
Dependent Claim
17 words
A method as defined in claim 12 further comprising incinerating said separated solvents with said resultant vapor.
Claim 15
Dependent Claim
18 words
A method as defined in claim 1 further comprising the step of recovering heat from said pyrolyzed material.
Claim 16
Dependent Claim
20 words
A method as defined in claim 14 further comprising the step of using said recovered heat to preheat said oil.
Claim 17
Dependent Claim
18 words
A method as defined in claim 1 further comprising the step of recovering heat from the incinerated vapor.
Claim 18
Dependent Claim
21 words
A method as defined in claim 16 further comprising the step of using said recovered heat in said oil separation step.
Claim 19
Dependent Claim
16 words
A method as defined in claim 1 further comprising the step of scrubbing the incinerated vapor.
Claim 20
Dependent Claim
15 words
A method as defined in claim 18 wherein said incinerated vapor is scrubbed with water.
Claim 21
Dependent Claim
24 words
A method as defined in claim 19 further comprising at least one of the steps of biologically treating and carbon treating said scrubbing water.
Claim 22
Dependent Claim
17 words
A method as defined in claim 1 wherein the separated oil is recycled into said combining step.
Claim 23
Independent Claim
135 words
A method for treating waste material containing both an acid and a toxic organic compound comprising the steps of: combining a caustic with an oil to form a caustic slurry; combining sufficient caustic slurry with said waste material to form a wet, pumpable slurry having a pH of 7 or higher, said wet, pumpable slurry containing water, a salt, and said toxic organic compound; separating said water from said wet, pumpable slurry to form a dry, pumpable slurry; separating said oil from said dry, pumpable slurry to form a dry, deoiled material containing said salt and said toxic organic compound; pyrolyzing said dry, deoiled material at a temperature below the melting point of said salt but sufficiently high to vaporize said toxic organic compound; and incinerating the resultant vapor to detoxify said vaporized organic compound.
Claim 24
Independent Claim
135 words
A method for treating waste material containing both an acid and a toxic organic compound comprising the steps of: combining a caustic with an oil to form a caustic slurry; combining sufficient caustic slurry with said waste material to form a wet, pumpable slurry having a pH of 7 or higher, said wet, pumpable slurry containing water, a salt, and said toxic organic compound; separating said water from said wet, pumpable slurry to form a dry, pumpable slurry; separating said oil from said dry, pumpable slurry to form a dry, deoiled material containing said salt and said toxic organic compound; pyrolyzing said dry, deoiled material at a temperature below the melting point of said salt but sufficiently high to vaporize said toxic organic compound; and incinerating the resultant vapor to detoxify said vaporized organic compound.
Claim 25
Dependent Claim
14 words
A method as defined in claim 22 wherein said caustic is a concentrated caustic.
Claim 26
Dependent Claim
29 words
A method as defined in claim 23 further comprising combining said pumpable slurry with an emulsifier to facilitate emulsification of said water and said salt within said pumpable slurry.
Claim 27
Dependent Claim
29 words
A method as defined in claim 22 further comprising combining said pumpable slurry with an emulsifier to facilitate emulsification of said water and said salt within said pumpable slurry.
Claim 28
Dependent Claim
24 words
A method as defined in claim 22 further comprising at least one of the steps of biologically treating and carbon treating said separated water.
Claim 29
Dependent Claim
34 words
A method as defined in claim 22 wherein said pumpable slurry contains solvents soluble in said oil, and wherein said method further comprises separating said solvents from said oil after said oil separation step.
Claim 30
Dependent Claim
17 words
A method as defined in claim 27 further comprising incinerating said separated solvents with said resultant vapor.
Claim 31
Dependent Claim
19 words
A method as defined in claim 22 further comprising the step of recovering said heat from said pyrolyzed material.
Claim 32
Dependent Claim
26 words
A method as defined in claim 29 further comprising using said recovered heat in at least one of said water separation step and preheating said oil.
Claim 33
Dependent Claim
18 words
A method as defined in claim 22 further comprising the step of recovering heat from the incinerated vapor.
Claim 34
Dependent Claim
30 words
A method as defined in claim 31 further comprising the step of using said recovered heat in at least one of said water separation step and said oil separation step.
Claim 35
Dependent Claim
16 words
A method as defined in claim 22 further comprising the step of scrubbing the incinerated vapor.
Claim 36
Dependent Claim
15 words
A method as defined in claim 33 wherein said incinerated vapor is scrubbed with water.
Claim 37
Dependent Claim
24 words
A method as defined in claim 34 further comprising at least one of the steps of biologically treating and carbon treating said scrubbing water.
Claim 38
Dependent Claim
17 words
A method as defined in claim 22 wherein the separated oil is recycled into said combining step.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |