US4344819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining coke level
Assignee: Bethlehem Steel Corp
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Filing: 1980-06-23
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Granted: 1982-08-17
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Expires: 2000-06-23
Abstract
Abstract Instruments measure and periodically store coke vertical temperature profile data sets at multiple coke guide levels within expected level range. Computer detects highest level in each data set above a reference temperature and terminal plots coke level as a function thereof.
Inventors
- 👤 John H. Gerdes, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
G; G01; G01J; G01J5/00; C; C10; C10B; C10B33/00; C10B33/14; C10B45/00; G01J5/0044; G01J5/48
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
A method of determining batch-processed coke level during a cycle of pushing hot coke from an oven through a coke guide, which method comprises: (a) measuring coke vertical temperature profile data by sensing plural coke temperatures at plural coke guide levels during lengthwise pushing of the coke, said levels being within an expected coke height range referenced to a coke oven floor; (b) storing in a data matrix plural coke vertical temperature profile data sets with each set measured at a different one of plural intervals related to the coke oven push; (c) determining observed coke level data at each of said intervals by detecting the highest level at which a temperature sensor was activated by coke in each stored coke vertical temperature profile data set; and (d) utilizing the determined coke level data to represent hot coke level existent in the coke oven before the pushing cycle.
Claim 2
Independent Claim
148 words
A method of determining batch-processed coke level during a cycle of pushing hot coke from an oven through a coke guide, which method comprises: (a) measuring coke vertical temperature profile data by sensing plural coke temperatures at plural coke guide levels during lengthwise pushing of the coke, said levels being within an expected coke height range referenced to a coke oven floor; (b) storing in a data matrix plural coke vertical temperature profile data sets with each set measured at a different one of plural intervals related to the coke oven push; (c) determining observed coke level data at each of said intervals by detecting the highest level at which a temperature sensor was activated by coke in each stored coke vertical temperature profile data set; and (d) utilizing the determined coke level data to represent hot coke level existent in the coke oven before the pushing cycle.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein step (a) the coke temperatures are sensed at either equal or unequal heights in the coke guide.
Claim 4
Dependent Claim
28 words
The method of claim 1 wherein step (a) one coke temperature is sensed at a level above a theoretical coke line and another at or below said line.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein step (b) storing said intervals are time intervals related to the duration of pusher ram movement.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein step (b) storing said intervals are length intervals referenced directly to pusher ram movement.
Claim 7
Dependent Claim
32 words
The method of claim 1 wherein step (c) level detecting includes comparing the temperature measurement at each sensor level to a preset temperature which differentiates between the presence and absence of coke.
Claim 8
Dependent Claim
39 words
The method of claim 1 wherein step (d) utilizing includes plotting a record of the determined coke level data to indicate the degree of coke oven filling existent in the coke oven above the floor before the pushing cycle.
Claim 9
Dependent Claim
65 words
The method of claim 1 wherein step (b) storing includes storing header data from an external source related to battery, oven or charge data, and wherein step (d) utilizing includes plotting the header data along the plotting a record of the determined coke level data to indicate the degree of coke oven filling existent in the coke oven above the floor before the pushing cycle.
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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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |