US2588331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of alkylation sludge acids
Assignee: Nicolay Titlestad Corp
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Filing: 1948-03-20
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Granted: 1952-03-04
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Expires: 1968-03-20
Abstract
No abstract record available.
Inventors
- 👤 Titlestad Nicolay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/90; C01B17/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A CONTINUOUS PROCESS OF TREATING ACID SLUDGES SUCH AS THOSE THAT RESULT FROM THE ALKYLATION PROCESS OF PRODUCING GASOLINE THAT CONTAIN H2SO4, WATER, AND AT LEAST 4% OF HYDROCARBONS, WHICH COMPRISES THE STEPS OF CONTINUOUSLY PASSING SUCH A SLUDGE INTO A REACTOR WHERE IT IS HEATED TO APPROXIMATELY THE CONSTANT BOILING TEMPERATURE OF 98% ACID, CONTINUOUSLY PASSING INTO SUCH REACTOR AN AMOUNT OF CONCENTRATED SO3 GAS APPROXIMATELY SUFFICIENT TO REACT WITH ALL THE CARBON OF SUCH HYDROCARBONS TO FORM SO2 AND CO2, UTILIZING THE HEAT OF SUCH REACTION FOR MAINTAINING THE LIQUID
Claim 2
Dependent Claim
92 words
A CONTINUOUS PROCESS OF TREATING ACID SLUDGES SUCH AS THOSE THAT RESULT FROM THE ALKYLATION PROCESS OF PRODUCING GASOLINE THAT CONTAIN H2SO4, WATER, AND AT LEAST 4% OF HYDROCARBONS, WHICH COMPRISES THE STEPS OF CONTINUOUSLY PASSING SUCH A SLUDGE INTO A REACTOR WHERE IT IS HEATED TO APPROXIMATELY THE CONSTANT BOILING TEMPERATURE OF 98% ACID, CONTINUOUSLY PASSING INTO SUCH REACTOR AN AMOUNT OF CONCENTRATED SO3 GAS APPROXIMATELY SUFFICIENT TO REACT WITH ALL THE CARBON OF SUCH HYDROCARBONS TO FORM SO2 AND CO2, UTILIZING THE HEAT OF SUCH REACTION FOR MAINTAINING THE LIQUID
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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |