US3905901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing hydrocarbons and other organic products from aqueous fluids
Assignee: Creusot Loire SA
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Filing: 1974-03-25
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Granted: 1975-09-16
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Expires: 1994-03-25
Abstract
Abstract For purifying aqueous industrial effluents containing hydrocarbons as pollutants by means of a solid complex. The effluent to be treated is intimately mixed with a hydrocarbonated solvent insoluble in water and the mixture obtained is passed through a bed of the solid complex which separates the hydrocarbonated solvent, containing the hydrocarbons and other organic products in the dissolved state, from the purified effluent.
Inventors
- 👤 Aldo Tribellini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/04; B01D17/047; B01J; B01J20/00; B01J20/22; Y; Y10; Y10S; Y10S210/00; Y10S210/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
A PROCESS FOR REMOVING HYDROCARBONS CONTAINED IN AN AQUEOUS FLUID, SUCH AS WASTE WATER OR AN INDUSTRIAL AQUEOUS EFFLUENT, COMPRISING INTIMATELY MIXING WITH THE EFFLUENT A HYDROCARBON SOLVENT INSOLUBLE IN WATER, AND PASSING THE MIXTURE OBTAINED THROUGH A BED OF A SOLID COMPLEX CONSISTING ESSENTIALLY OF A SOLID SUBSTRATE BEARING FREE HYDROXYL GROUPS ACTIVATED WITH 0.01 TO 10 PARTS BY WEIGHT OF AN ACID HALIDE PER ONE PART OF SAID SUBSTRATE AND TO WHICH IS COVALENTLY BOUND FROM 0.01 TO 10 PARTS BY WEIGHT OF AN AMINE SELECTED FROM THE PRIMARY ALIPHATIC AMINES HAVING FROM 6 TO 20 CARBON ATOMS AND THE PRIMARY AROMATIC AMINES HAVING, ATTACHED TO A PHENYL RING, A LINEAR HYDROCARBON CHAIN OF 1 TO 10 CARBON ATOMS BEARING THE AMINE GROUP, THEREBY SEPARATING THE HYDROGEN SOLVENT CONTAINING SAID HYDROCARBON FROM THE PURIFIED EFFLUENT.
Claim 2
Dependent Claim
137 words
A PROCESS FOR REMOVING HYDROCARBONS CONTAINED IN AN AQUEOUS FLUID, SUCH AS WASTE WATER OR AN INDUSTRIAL AQUEOUS EFFLUENT, COMPRISING INTIMATELY MIXING WITH THE EFFLUENT A HYDROCARBON SOLVENT INSOLUBLE IN WATER, AND PASSING THE MIXTURE OBTAINED THROUGH A BED OF A SOLID COMPLEX CONSISTING ESSENTIALLY OF A SOLID SUBSTRATE BEARING FREE HYDROXYL GROUPS ACTIVATED WITH 0.01 TO 10 PARTS BY WEIGHT OF AN ACID HALIDE PER ONE PART OF SAID SUBSTRATE AND TO WHICH IS COVALENTLY BOUND FROM 0.01 TO 10 PARTS BY WEIGHT OF AN AMINE SELECTED FROM THE PRIMARY ALIPHATIC AMINES HAVING FROM 6 TO 20 CARBON ATOMS AND THE PRIMARY AROMATIC AMINES HAVING, ATTACHED TO A PHENYL RING, A LINEAR HYDROCARBON CHAIN OF 1 TO 10 CARBON ATOMS BEARING THE AMINE GROUP, THEREBY SEPARATING THE HYDROGEN SOLVENT CONTAINING SAID HYDROCARBON FROM THE PURIFIED EFFLUENT.
Claim 3
Dependent Claim
45 words
A process as claimed in claim 1, comprising first contacting the effluent to be treated with the solid complex so as to obtain a pre-purified effluent, mixing the pre-purified effluent with the hydrocarbon solvent and sending the mixture obtained into the bed of solid complex.
Claim 4
Dependent Claim
28 words
A process as claimed in claim 1, wherein the hydrocarbon solvent is a paraffinic hydrocarbon cut of C6 to C20 and preferably C12 to C18 from oil distillation.
Claim 5
Dependent Claim
17 words
A process as claimed in claim 3, wherein the paraffinic hydrocarbon cut is of C12 to C18.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 3, wherein about 500 to 2000 ppm of said paraffinic hydrocarbon cut is mixed with the effluent.
Claim 7
Dependent Claim
29 words
A process as claimed in claim 3, wherein the solid complex employed for the pre-purification is of the same nature as the solid complex employed for the final purification.
Claim 8
Dependent Claim
38 words
A process as claimed in claim 6, wherein the particle size of the complex employed for the pre-purification is about 1-3 mm and the particle size of the complex employed for the final purification is 0.5- 1.5 mm.
Claim 9
Dependent Claim
23 words
A process as claimed in claim 1, wherein the solid complex is a complex of a mineral substrate with a primary organic amine.
Claim 10
Dependent Claim
23 words
A process as claimed in claim 1, wherein the solid complex is a complex of a mineral substrate with a primary aliphatic amine.
Claim 11
Dependent Claim
74 words
A proceSs as claimed in claim 1, wherein the separation of the solvent and effluent is carried out by sending the solvent-effluent mixture to the bed of complex at a certain distance below the upper surface of the bed, the solvent being made to leave the bed by way of the upper part of the bed and the effluent being made to leave the bed by way of the lower part of the bed.
References Cited (Backward Citations)
US3487928A
Cited
US3676357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |