GB1301315A - - Google Patents
Info
- Publication number
- GB1301315A GB1301315A GB1301315DA GB1301315A GB 1301315 A GB1301315 A GB 1301315A GB 1301315D A GB1301315D A GB 1301315DA GB 1301315 A GB1301315 A GB 1301315A
- Authority
- GB
- United Kingdom
- Prior art keywords
- superheater
- feedwater
- steam
- pipe
- degasser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/14—Control systems for steam boilers for steam boilers of forced-flow type during the starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers
Abstract
1301315 Protecting superheater tubes SULZER BROS Ltd 11 Sept 1970 [23 Sept 1969] 43633/70 Heading F4A When starting up steam generator 1 feedwater is pumped at 15 from degasser 16 to evaporator 4 and additionally through pipe 34 to superheater 5 at flow rates of approximately 15% and 35% respectively of full-load flow rate, thus ensuring that steam generation occurs in the evaporator before the superheater. The steam outlet valve 22 is closed and full working pressure is maintained by a device 32 through which the water returns via pipe 31 to degasser 16. The burner 6 is run at about 25% of full rate and when the working temperature is reached steam is generated in the evaporator 4 but is condensed in chamber 20 when it joins the feedwater entering the superheater from pipe 34. When the correct conditions are reached the superheater feedwater is cut off by valve 35 and device 32 is operated to rapidly release the pressure in the superheater through return line 31 causing intensive evaporation which effectively expels all the feedwater from the superheater. The firing rate and the feedwater supply are then increased and the working pressure raised by adjusting valve 32. In the operation of the embodiment shown, Fig. 1, steam is first passed via valve 22 through stage 23 of a turbine, then combined with the flue gases by mixer 25 and passed through stage 27 of the turbine. The turbine drives generator 9 and compressor 10 supplying air to burner 6. In a second embodiment, Fig. 2 (not shown), the chamber 20 is replaced by a condenser (40) and the feedwater to the superheater is supplied between this and the superheater, the condensate being returned through a pipe (41) to the degasser 16. In a third embodiment, Fig. 3 (not shown), the degasser is omitted and water is circulated between the condenser (40) and the evaporator 4 through pipe (42) by a pump (43). In addition the superheater is formed in two sections between which water is injected to control the temperature of the steam delivered by the second section.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1432769A CH513361A (en) | 1969-09-23 | 1969-09-23 | Procedure for starting up a steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1301315A true GB1301315A (en) | 1972-12-29 |
Family
ID=4399871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1301315D Expired GB1301315A (en) | 1969-09-23 | 1970-09-11 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3648667A (en) |
| BE (1) | BE756407A (en) |
| CA (1) | CA921347A (en) |
| CH (1) | CH513361A (en) |
| DE (1) | DE1950104A1 (en) |
| ES (1) | ES383788A1 (en) |
| FR (1) | FR2061239A5 (en) |
| GB (1) | GB1301315A (en) |
| NL (1) | NL6915466A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH622332A5 (en) * | 1977-09-02 | 1981-03-31 | Sulzer Ag | |
| DE19504308C1 (en) * | 1995-02-09 | 1996-08-08 | Siemens Ag | Method and device for starting a once-through steam generator |
| DE19717158C2 (en) * | 1997-04-23 | 1999-11-11 | Siemens Ag | Continuous steam generator and method for starting up a continuous steam generator |
| DE102010040623A1 (en) * | 2010-09-13 | 2012-03-15 | Siemens Aktiengesellschaft | Method for regulating a short-term increase in output of a steam turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1299642B (en) * | 1965-02-13 | 1969-07-24 | Steinmueller Gmbh L & C | Procedure for starting up steam generators operated with forced flow |
| FR1508651A (en) * | 1966-03-04 | 1968-01-05 | Steinmueller Gmbh L & C | Method for using steam generator installations |
-
0
- BE BE756407D patent/BE756407A/en unknown
-
1969
- 1969-09-23 CH CH1432769A patent/CH513361A/en not_active IP Right Cessation
- 1969-10-04 DE DE19691950104 patent/DE1950104A1/en active Pending
- 1969-10-13 NL NL6915466A patent/NL6915466A/xx unknown
-
1970
- 1970-08-10 CA CA090345A patent/CA921347A/en not_active Expired
- 1970-09-10 FR FR7032885A patent/FR2061239A5/fr not_active Expired
- 1970-09-11 GB GB1301315D patent/GB1301315A/en not_active Expired
- 1970-09-11 US US71437A patent/US3648667A/en not_active Expired - Lifetime
- 1970-09-19 ES ES383788A patent/ES383788A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE756407A (en) | 1971-03-22 |
| ES383788A1 (en) | 1973-05-01 |
| NL6915466A (en) | 1971-03-25 |
| FR2061239A5 (en) | 1971-06-18 |
| DE1950104A1 (en) | 1971-04-22 |
| CH513361A (en) | 1971-09-30 |
| CA921347A (en) | 1973-02-20 |
| US3648667A (en) | 1972-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |