Patent US4405447A successfully refreshed from Google Patents.
US4405447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the removal of metal from a hydrocarbon solution containing metal alkaryl sulfonate
Assignee: Honeywell UOP LLC
•
Filing: 1982-03-15
•
Granted: 1983-09-20
•
Expires: 2002-03-15
Abstract
Abstract A method for the removal of metal from a hydrocarbon solution containing metal alkaryl sulfonate. Briefly, the method comprises contacting the hydrocarbon solution containing metal alkaryl sulfonate with an aqueous ammonia or an aqueous ammonium salt solution and recovering a hydrocarbon having a reduced metal concentration.
Inventors
- 👤 Lee Hilfman
- 👤 John G. Gatsis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/02; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
45 words
A method for the removal of metal from a hydrocarbon solution containing metal alkaryl sulfonate, which method comprises: (a) contacting a hydrocarbon solution of metal alkaryl sulfonate with aqueous ammonia or aqueous ammonium salt solution; and (b) recovering a hydrocarbon having a reduced metal concentration.
Claim 2
Independent Claim
45 words
A method for the removal of metal from a hydrocarbon solution containing metal alkaryl sulfonate, which method comprises: (a) contacting a hydrocarbon solution of metal alkaryl sulfonate with aqueous ammonia or aqueous ammonium salt solution; and (b) recovering a hydrocarbon having a reduced metal concentration.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein said hydrocarbon is crude oil.
Claim 4
Dependent Claim
35 words
The method of claim 1 wherein said metal alkaryl sulfonate is present in the hydrocarbon solution in an amount from about 10 parts per million by weight to about 10,000 parts per million by weight.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein step (a) is performed at a temperature from about 100° F. to about 250° F.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein step (a) is performed at a pressure from about ambient to about 250 psig.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein said metal alkaryl sulfonate is sodium alkaryl sulfonate.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein said ammonium salt is ammonium chloride.
Claim 9
Independent Claim
65 words
A method for the removal of sodium from a hydrocarbon solution containing sodium alkaryl sulfonate, which method comprises: (a) contacting a hydrocarbon solution of sodium alkaryl sulfonate with an aqueous solution of ammonium chloride at a temperature from about 100° F. to about 250° F. and a pressure from about ambient to about 250 psig; and (b) recovering a hydrocarbon having a reduced sodium concentration.
Claim 10
Independent Claim
65 words
A method for the removal of sodium from a hydrocarbon solution containing sodium alkaryl sulfonate, which method comprises: (a) contacting a hydrocarbon solution of sodium alkaryl sulfonate with an aqueous solution of ammonium chloride at a temperature from about 100° F. to about 250° F. and a pressure from about ambient to about 250 psig; and (b) recovering a hydrocarbon having a reduced sodium concentration.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |