US3234920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing steam peaks from process waste heat utilizers with variable steam generation
Assignee: Waagner Biro AG
•
Filing: 1962-01-15
•
Granted: 1966-02-15
•
Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Kemmetmuller Roland
- 👤 Markow Demeter Karl
- 👤 Pascher Ingo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/183; C; C21; C21C; C21C5/00; C21C5/28; C21C5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A METHOD OF EQUALIZING STEAM PEAKS IN A WASTE GAS STEAM BOILER USING CYCLICALLY PRODUCED WASTE HEAT, COMPRISING THE STEPS OF FEEDING, DURING THE PERIOD OF THE CYCLE IN WHICH WASTE HEAT IS PRODUCED, ALL OF THE FEED WATER INTO AN ECONOMIZER HEATED BY THE WASTE HEAT; FEEDING THE THUS HEATED FEED WATER INTO THE STEAM BOILER; FEEDING PART OF THE HOT FEED WATER FROM THE BOILER INTO A DISPLACEMENT TYPE FEED WATER ACCUMULATOR; AND DISPLACING THEREBY COLD FEED WATER CONTAINED IN THE ACCUMULATOR INTO THE BOILER; FEEDING, DURING THE PERIOD OF THE CYCLE IN WHICH NO WASTE HEAT IS PRODUCED, ONLY A SMALL FRACTION OF THE FEED WATER THROUGH THE ECONOMIZER INTO THE BOILER AND THE REMAINDER OF THE FEED WATER INTO THE DISPLACEMENT TYPE FEED WATER ACCUMULATOR; DISPLACING THEREBY HOT FEED WATER STORED IN THE ACCUMULATOR DURING THE FIRST MENTIONED PERIOD INTO SAID BOILER TO PROVIDE AT THE END OF SAID LAST MENTIONED PERIOD A MAXIMUM INCREASE OF THE AMOUNT OF COLD WATER IN SAID FEED WATER ACCUMULATOR; AND HEATING SAID STEAM BOILER DURING THE PERIOD IN WHICH NO WASTE HEAT IS PRODUCED WITH ADDITIONAL HEATING MEANS.
Claim 2
Independent Claim
189 words
A METHOD OF EQUALIZING STEAM PEAKS IN A WASTE GAS STEAM BOILER USING CYCLICALLY PRODUCED WASTE HEAT, COMPRISING THE STEPS OF FEEDING, DURING THE PERIOD OF THE CYCLE IN WHICH WASTE HEAT IS PRODUCED, ALL OF THE FEED WATER INTO AN ECONOMIZER HEATED BY THE WASTE HEAT; FEEDING THE THUS HEATED FEED WATER INTO THE STEAM BOILER; FEEDING PART OF THE HOT FEED WATER FROM THE BOILER INTO A DISPLACEMENT TYPE FEED WATER ACCUMULATOR; AND DISPLACING THEREBY COLD FEED WATER CONTAINED IN THE ACCUMULATOR INTO THE BOILER; FEEDING, DURING THE PERIOD OF THE CYCLE IN WHICH NO WASTE HEAT IS PRODUCED, ONLY A SMALL FRACTION OF THE FEED WATER THROUGH THE ECONOMIZER INTO THE BOILER AND THE REMAINDER OF THE FEED WATER INTO THE DISPLACEMENT TYPE FEED WATER ACCUMULATOR; DISPLACING THEREBY HOT FEED WATER STORED IN THE ACCUMULATOR DURING THE FIRST MENTIONED PERIOD INTO SAID BOILER TO PROVIDE AT THE END OF SAID LAST MENTIONED PERIOD A MAXIMUM INCREASE OF THE AMOUNT OF COLD WATER IN SAID FEED WATER ACCUMULATOR; AND HEATING SAID STEAM BOILER DURING THE PERIOD IN WHICH NO WASTE HEAT IS PRODUCED WITH ADDITIONAL HEATING MEANS.
References Cited (Backward Citations)
US1659836A
Cited
US1265020A
Cited
DE425987C
Cited
GB214965A
Cited
DE549113C
Cited
GB335812A
Cited
DE832762C
Cited
US2550822A
Cited
AT210445B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |