CN109028009A - Control the variable in boiler pressure vessel - Google Patents
Control the variable in boiler pressure vessel Download PDFInfo
- Publication number
- CN109028009A CN109028009A CN201810606868.4A CN201810606868A CN109028009A CN 109028009 A CN109028009 A CN 109028009A CN 201810606868 A CN201810606868 A CN 201810606868A CN 109028009 A CN109028009 A CN 109028009A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- wall
- boiler pressure
- pressure vessel
- heating element
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000035882 stress Effects 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000008646 thermal stress Effects 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/22—Drums; Headers; Accessories therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
- F01K3/22—Controlling, e.g. starting, stopping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/02—Control systems for steam boilers for steam boilers with natural convection circulation
- F22B35/04—Control systems for steam boilers for steam boilers with natural convection circulation during 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B5/00—Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas
- F22B5/04—Component parts thereof; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of method of stress in control boiler pressure vessel includes at least part of the diameter for limiting the cylinder (10) of boiler pressure vessel and the wall (12) of preheating cylinder (10).For given mechanical stress, the diameter of limitation cylinder (10) allows to increase the pressure in cylinder (10).In addition, the wall (12) of preheating cylinder (10) reduces the highest heat-induced stress being made in the material of cylinder (10).
Description
Technical field
The application relates generally to the system and method for controlling the variable in boiler pressure vessel.In more detail, originally
Application is related to for reducing the system and method for the stress in the wall of boiler pressure vessel.
Background technique
Boiler pressure vessel (hereinafter referred to as " boiler ") is closed vessel, including shell and accommodate can be controlled
Under the conditions of the liquid that is heated with fuel or hot gas.Shell be the cylinder (drum) that is limited by one or more walls (hereinafter referred to as
" cylinder " or " boiler drum ").The chemical energy for including in fuel is converted into thermal energy, and the liquid in heating boiler simultaneously makes it gasify.Liquid
The mixture of body and steam enters cylinder.The wall of cylinder is designed to bear the pressure applied by the liquid of gasification.The liquid of gasification
Body can be obtained from cylinder, and be used to function, or be used as heat source.
The boiler that starting is initially at environmental condition usually causes the quick temperature change being experienced by barrel.These
Temperature change can generate thermal stress in wall.Such stress can cause the generation and extension of crackle in the material of wall.At certain
In a little situations, such stress can also cause in magnet body (magnetite) layer being formed on the pars intramuralis for the cylinder for accommodating water
Crackle generation and extension.
In both natural circulation boiler and associated circulation boilers that wherein water is heated and is gasificated into steam, cylinder is
For being separated from the water the steam drum of steam.With operation with high pressure and/or in the boiler with big cylinder diameter, the thickness of wall is more
Greatly (with lower pressure operation and/or compared with the boiler with small cylinder diameter), to keep acceptable pressure stresses
It is horizontal.The thickness of increased wall causes in the increased thermal stress in the inside of wall.It is also occurred at not in the high stress of wall inner portion
With position or extend through wall penetrate place.Typically penetrate including nozzle etc..Because penetrating is weak spot in barrel, by
It is forced in boiler in the maximum stress range (and in more detail, in the cylinder of boiler) in European standard (EN) specification
Limitation, the maximum operating pressure of boiler are effectively limited.The range of stress also limits the quick start that boiler can be undergone
Quantity, and the starting total quantity during the service life of boiler.
The boiler drum of heavy wall is usually only heated in their interior surface, this causes temporary and non-uniform in wall
Temperature, especially on startup during the phase.As the thickness of wall increases, the temperature gradient across wall also increases.For internal temperature
The given rate for spending variation, because the thickness of the wall of cylinder increases, the thermal stress of induction increases.Over time, wall heats
To uniform temperature, such thermal stress is thereby eliminated.Pressure stresses are then in ascendancy.Due to thermal gradient and
Such stress caused by internal pressure (when repeatedly applying and removing) can cause the generation of crackle in construction material
And extension.Limit stresses are to prevent the needs of such crackle from can effectively limit the rate of temperature change in cylinder.Pass through limit
The operation flexible (for example, available maximum pressure) of the rate of temperature change processed, boiler is lowered.The flexibility is quick to providing
Starting is to be desired for responding the variation of energy requirement.
The additional constraint for meeting EN code requirement on boiler drum is the range of limit stresses to avoid magnet body from cracking.
In order to avoid magnet body cracking, the difference between highest compression and highest tensile stress should be no more than 600 megapascal (MPa).?
The range of stress is illustrated in Fig. 1, Fig. 1 illustrates the typical stress course of the steam drum during boiler startup.When barrel
With the operating condition close to stable state and when becoming more evenly, the thermal stress that early stage occurs during startup is shown temperature
To be gradually reduced.When close to the condition of stable state, the stress due to caused by internal pressure is dominant compared to thermal stress.For
Given cylinder diameter, positive circumference stress (hoop stress) (tension) can be reduced by increasing the thickness of barrel, but this can be due to
Increase negative stress across the temperature of wall on startup, and limits the rate or quantity of starting.
Summary of the invention
According to herein described aspect, it is provided with a kind of method for controlling the stress in boiler pressure vessel.This method packet
Include at least part of the diameter of the cylinder of limitation boiler pressure vessel and the wall of preheating cylinder.For given mechanical stress, limitation
The diameter of cylinder allows to increase the pressure in cylinder.In addition, the wall of preheating cylinder reduces the highest thermal induction being made in the material of cylinder and answers
Power.
According to herein described other aspects, it is provided with a kind of method for operating boiler pressure vessel.This method is included in
Before the start-up operation of boiler pressure vessel, during the operation of boiler pressure vessel, and/or in the stopping of boiler pressure vessel
During running operation, local heating is applied to a part of boiler pressure vessel.Local heating is being applied to boiler pressure
When vessel, the heat-induced stress in boiler pressure vessel is reduced.
According to herein described other aspects, it is provided with a kind of method for controlling the variable in boiler pressure vessel.The party
Method includes: to provide the steam drum of boiler；Pass through the mechanical stress in the wall for the diameter control steam drum for limiting steam drum；And it is logical
Cross the thermal stress in the wall of at least part control steam drum of heating steam drum.Boiler pressure vessel starting period and
It shuts down during at least one of period through the area penetrated for penetrating and/or surrounding in steam drum in Preheated steam cylinder
The heating of a part of steam drum is realized in domain.
Feature described above and other is illustrated by attached drawing below and detailed description.
Detailed description of the invention
Referring now to the drawings, they are exemplary embodiments, and wherein, and same element is numbered in the same way.
Fig. 1 is the diagram of the typical stress course for steam drum.
Fig. 2 is schematically illustrating for the longitudinal section of the steam drum of boiler.
Fig. 3 is the perspective view of the longitudinal section of the steam drum of boiler.
Specific embodiment
Referring now to Figure 2, generally show an exemplary embodiment of the steam drum of boiler at 10, and it is under
Referred to herein as " cylinder 10 " or " steam drum 10 ".Cylinder 10 may be from natural circulation boiler, associated circulation boiler or any other class
The boiler of type.Cylinder 10 has elongated cylindrical, and has the wall 12 penetrated by nozzle 14, and nozzle 14 receives high temperature and steams
Vapour/liquid mixture and that the mixture is discharged into the annular between the bushing or partition 18 and the inner surface 15 of wall 12 of cylinder is empty
Between in 16.Wall 12 also has outer surface 17.Nozzle 14 can extend over wall inner surface 15 (Fig. 2) or they can be in inner surface
(Fig. 3) is terminated at 15.Liquid 26, for example, such as water, is accumulated in the bottom of cylinder 10.One or more steam separative units 24
Positioned at the outside by the closed volume of partition 18.The steam of gasification from vapor/liquid mixture 34 and from water 26 passes through
Dry component 32, and be removed by outlet 30.The structure of Fig. 2 is not limited to shown structure, because other structures are
It is possible.
In boiler attendance, especially when starting from environmental condition, the interior table of nozzle 14 and the wall 12 around nozzle 14
The region 15a in face 15 is just influenced by vapor/liquid mixture 34.Across nozzle 14 and the material of wall 12 temperature transient (for example,
Movement of the heat from a region to another region) generate thermal stress.Correspondingly, nozzle 14 and the region 15a around nozzle, i.e. barrel
12- and especially at inner surface 15, be subjected to the stress of the vapor/liquid mixture 34 from high temperature.Due to pressure, also meet
Circumference stress to mechanical stress, such as in the wall 12 of cylinder 10.
Mechanical stress in wall 12 be various processes variable-i.e.: the inside of the radius of cylinder 10, the thickness of wall 12 and cylinder 10
The function of pressure-.This can be described by following equation:
σm=f(PR/t)
Wherein:
σmIt is the circumference stress of cylinder；
P is internal pressure；
R is a radius；And
T is wall thickness.
The thickness of the wall 12 of cylinder 10 is caused to be subtracted given internal pressure and stress, the radius or diameter for reducing cylinder
It is small.
(it being followed a kind of method of adaptation mechanical stress naturally to what is produced with the steam greater than 50 kilograms (kg/s) per second
Ring boiler and associated circulation boiler are both applicable, to make it possible to operate at a higher pressure, due to as a result
The higher cycle efficieny occurred, this is desirably) it is the thickness for limiting the wall 12 of cylinder 10.The thickness of wall 12 by using
The steam drum-of relatively small diameter is for example, have the steam in about 1000 millimeters of internal diameters between (mm) and about 1775mm
Cylinder-limit.When the diameter of cylinder 10 is reduced, and the thickness of wall 12 is limited to and has the internal diameter greater than about 1775mm
Cylinder consistent value when, the value of P can increase given circumference stress.Typical wall thickness can be from about 70mm to about
In the range of 150mm.
Cylinder 10 wall 12 in thermal stress also occur at across wall 12 reach inner surface 15 nozzle 14 or it is other penetrate place,
And at the inner surface 15a of adjacent nozzles 14.With reference to Fig. 3, local high stress range areas is shown at 20.The part height is answered
Power range areas 20 is located on inner surface 15-close to the region where 14 transparent walls of nozzle.In the part high stress range areas
Stress in 20 is at least 2 times of the stress in a rest part in any other region.
It has been found that at least some parts that local heating is applied to cylinder 10 can be reduced in cylinder 10 in a controlled manner
Temperature transient and thermal stress.
Using local heating so as to a kind of method for adapting to thermal stress be when cylinder 10 under ambient pressure conditions when, in boiler
Pre- hot nozzle 14 and the region 15a of adjacent nozzles 14 are (for example, the inner surface section of the wall 12 in the region of nozzle 14 before starting
Domain 15a).In one embodiment, local heating can be applicable on the outer surface 17 of cylinder 10, enter where cylinder 10 close to nozzle 14
Region (such as region 17a).This will reduce the highest heat-induced stress being made in the material of the wall 12 of cylinder 10, otherwise will
Will limit from environmental condition start quantity, or due to the range of stress EN specification limit and even prevent cartridge type boiler with height
In certain pressure limit come using.Locally pre- hot nozzle 14 and/or wall 12 can use the alternative side for the diameter for being restricted cylinder 10
Case or in conjunction with limitation cylinder 10 diameter come using.
It will also be appreciated that being not limited to use this method in boiler startup, because nozzle 14 and wall 12 can stop
It is heated during running operation.When doing so, heat will be reduced from the rate that nozzle 14 and wall 12 dissipate, therefore reduce nozzle
14 and wall 12 material in heat-induced stress.
Except through using local heating to reduce other than heat-induced stress, local heating use is contemplated than heating entire cylinder
The energy of (energy) much less of needs is reduced behaviour by 10 (for example, entire inner surfaces 15) and fluid 26 that it includes
Make cost.In the preheating feature of no any classification in the case where field, it is cold-started substantially with preheating
Unconfined quantity is compared, and the quantity possible (potentially) of cold start-up can be restricted to the bare maximum (example in specification
As 300).
The given maximum possible thermal stress for ramping up (ramp up) (temperature transient) for temperature is also various processes
The function of variable, and square approximatively changing with the thickness of wall.For the same rate of temperature change, reduced thickness
It will lead to the thermal stress of reduction.This is described by following formula:
σt=f(Trt2)
Wherein:
σtIt is thermal stress；
TrIt is the rate of temperature change；And
T is wall thickness.
The boiler that starting is initially at environmental condition causes in cylinder 10 and other components of cylinder 10 (such as nozzle 14 etc.)
In quick temperature change.These temperature changes can generate thermal stress in these components.Structure can be made in such stress
The material of part neutralizes to be drawn in the magnet body layer being formed on the inner surface 15 for accommodating this cylinder 10 of water 26 in some cases
The generation and extension of checking.Other components of at least some parts or pressure vessel that preheat cylinder 10 in a controlled manner can
The rate of temperature change is reduced, therefore reduces the thermal stress in component.Resistance heating or it is other be readily useable by way of
Realize the preheating of cylinder 10.
Although the present invention is shown and described about its detailed embodiment, it will be appreciated by those skilled in the art that
Different changes, and its alternative element of equivalent can be made without departing substantially from the scope of the present invention.In addition, not
In the case where essential scope of the invention, modification can be made to make specific situation or material be suitable for the invention religion
It leads.It is therefore intended that the present invention is not limited to disclosed specific embodiment in the above description, but the present invention will include falling
Enter all embodiments in the range of the attached claims.
Claims (20)
1. a kind of method that control has the stress in the boiler pressure vessel of cylinder, the cylinder, which has, to be penetrated for fanging noz(zle)
Or pipe, which comprises
At least part of the cylinder that penetrates of the local heating in the cylinder；
Wherein, the method also includes only heat the cylinder only only around in the cylinder the respective nozzle of receiving or pipe it is each
The wall part of self-gating；And
Wherein, the method is also according to formula: σt= f(Trt2) come limit the boiler pressure vessel cylinder wall thickness with
Reduce thermal stress, wherein σtIt is thermal stress, TrIt is the rate that temperature ramp rises, and t is wall thickness.
2. the method according to claim 1, wherein the internal diameter of the cylinder is less than 1775 millimeters.
3. the method according to claim 1, wherein the heating element directly heat the cylinder around described
The wall penetrated.
4. being connected the method according to claim 1, wherein the heating element directly heats at the place of penetrating
Nozzle or pipe on the barrel, so that local heating is around a part of the barrel penetrated.
5. the method according to claim 1, wherein by the heating element heats in the boiler pressure device
It is carried out during the starting of ware.
6. the method according to claim 1, wherein by the heating element heats in the boiler pressure device
The period that shuts down of ware carries out.
7. the method according to claim 1, wherein by the heating element heats in the boiler pressure device
It is carried out during the operation of ware.
8. the method according to claim 1, wherein the thickness of the wall of the cylinder is at 70 millimeters to 150 millimeters
In range.
9. a kind of method that operation has the boiler pressure vessel of cylinder, which comprises
There is provided heating element to the boiler pressure vessel cylinder a part, so as to the stopping of the boiler pressure vessel transport
Apply additional heat between refunding；
Wherein, the method also includes only heat the cylinder only only around in the cylinder the respective nozzle of receiving or pipe it is each
The wall part of self-gating；And
Wherein, the method is also according to formula: σt= f(Trt2) come limit the boiler pressure vessel cylinder wall thickness with
Reduce thermal stress, wherein σtIt is thermal stress, TrIt is the rate that temperature ramp rises, and t is wall thickness.
10. according to the method described in claim 9, it is characterized in that, the offer heating element is to apply additional heat
Include to a part of the cylinder, around wherein penetrating the wall for directly applying heat to the cylinder.
11. according to the method described in claim 9, it is characterized in that, the internal diameter of the cylinder is less than 1775 millimeters.
12. according to the method for claim 11, which is characterized in that the thickness of the wall of the cylinder is at 70 millimeters to 150 millimeters
In the range of.
13. according to the method described in claim 9, it is characterized in that, the offer heating element includes directly applying heat to institute
State the wall of cylinder penetrated described in.
14. according to the method described in claim 9, it is characterized in that, the offer heating element includes applying heat to be located at
The place of penetrating therein is connected at least one nozzle or pipe on the barrel.
15. according to the method described in claim 9, it is characterized in that, the offer heating element includes applying heat to and only enclosing
Around the outside for penetrating the wherein at least one wall with nozzle or pipe of the cylinder.
16. according to the method described in claim 9, it is characterized in that, further include respectively heat the cylinder only only around institute
State the wall part of each self-gating of the respective nozzle of receiving or pipe in cylinder.
17. a kind of method that operation has the boiler pressure vessel of cylinder, which comprises
There is provided heating element to the boiler pressure vessel cylinder a part, so as to the boiler pressure vessel stablize fortune
Apply additional heat between refunding；
Wherein, the method also includes only heat the cylinder only only around in the cylinder the respective nozzle of receiving or pipe it is each
The wall part of self-gating；And
Wherein, the method is also according to formula: σt= f(Trt2) come limit the boiler pressure vessel cylinder wall thickness with
Reduce thermal stress, wherein σtIt is thermal stress, TrIt is the rate that temperature ramp rises, and t is wall thickness.
18. according to the method for claim 17, which is characterized in that the offer heating element is to apply additional heat
Include to a part of the cylinder, around wherein penetrating the wall for directly applying heat to the cylinder.
19. according to the method for claim 17, which is characterized in that the offer heating element includes applying heat in place
At least one nozzle or pipe on the barrel are connected in the place of penetrating therein.
20. according to the method for claim 17, which is characterized in that the thickness of the wall of the cylinder is at 70 millimeters to 150 millimeters
In the range of.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/690,197 US20110174240A1 (en) | 2010-01-20 | 2010-01-20 | Controlling variables in boiler pressure vessels |
| US12/690197 | 2010-01-20 | ||
| CN2010800656186A CN102859276A (en) | 2010-01-20 | 2010-12-08 | Controlling variables in boiler pressure vessels |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800656186A Division CN102859276A (en) | 2010-01-20 | 2010-12-08 | Controlling variables in boiler pressure vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109028009A true CN109028009A (en) | 2018-12-18 |
Family
ID=44276604
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810606868.4A Pending CN109028009A (en) | 2010-01-20 | 2010-12-08 | Control the variable in boiler pressure vessel |
| CN2010800656186A Pending CN102859276A (en) | 2010-01-20 | 2010-12-08 | Controlling variables in boiler pressure vessels |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800656186A Pending CN102859276A (en) | 2010-01-20 | 2010-12-08 | Controlling variables in boiler pressure vessels |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110174240A1 (en) |
| EP (1) | EP2526338B1 (en) |
| CN (2) | CN109028009A (en) |
| MX (1) | MX2012008402A (en) |
| WO (1) | WO2011090576A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9903231B2 (en) * | 2011-12-14 | 2018-02-27 | General Electric Company | System and method for warming up a steam turbine |
| EP3283735A1 (en) * | 2015-06-02 | 2018-02-21 | Siemens Aktiengesellschaft | Method for making a flow guiding unit cool down more slowly, and flow conducting unit |
| CN111219703B (en) * | 2020-01-20 | 2021-08-13 | 广东韶钢松山股份有限公司 | Boiler drum and method for reforming boiler drum based on reverse simulation analysis |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1684011A1 (en) * | 2004-12-29 | 2006-07-26 | Son S.R.L. | Steam generator |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2271652A (en) * | 1939-07-01 | 1942-02-03 | Babcock & Wilcox Co | Welded pressure vessel |
| GB710185A (en) * | 1950-04-22 | 1954-06-09 | Comb Engineering Superheating | Improvements in or relating to steam boilers, and more particularly to steam and water drums therefor |
| US2743709A (en) * | 1952-04-12 | 1956-05-01 | Combustion Eng | Equalizing the temperature of high pressure boiler drum walls |
| US3117560A (en) * | 1962-01-10 | 1964-01-14 | Riley Stoker Corp | Steam generating unit |
| US3516391A (en) * | 1968-06-20 | 1970-06-23 | Riley Stoker Corp | Steam generating unit |
| US3765572A (en) * | 1970-09-18 | 1973-10-16 | Concast Ag | Rotatable tundish with multiple outlets |
| US3789806A (en) * | 1971-12-27 | 1974-02-05 | Foster Wheeler Corp | Furnace circuit for variable pressure once-through generator |
| US5061304A (en) * | 1981-03-27 | 1991-10-29 | Foster Wheeler Energy Corporation | Steam processing apparatus and method |
| CN2034676U (en) * | 1988-02-27 | 1989-03-22 | 国营风华机器厂 | Waste heat recovery installation of bridge type doubk flow passage heating pipe |
| US6510739B1 (en) * | 2001-07-03 | 2003-01-28 | Alstom (Switzerland) Ltd | Apparatus for continuously monitoring liquid level conditions in a liquid-vapor separating device |
| EP1275452A3 (en) * | 2001-07-13 | 2003-12-10 | Heraeus Electro-Nite International N.V. | Refractory nozzle |
| ATE328241T1 (en) * | 2003-10-23 | 2006-06-15 | Nem Bv | EVAPORATOR DEVICE |
| US8514998B2 (en) * | 2005-01-31 | 2013-08-20 | Hitachi-Ge Nuclear Energy, Ltd. | Induction heating stress improvement |
| US8544272B2 (en) * | 2007-06-11 | 2013-10-01 | Brightsource Industries (Israel) Ltd. | Solar receiver |
| US7727389B1 (en) * | 2009-09-18 | 2010-06-01 | Green Intectuac Properties | System for removing hydrocarbons and contaminates |
-
2010
- 2010-01-20 US US12/690,197 patent/US20110174240A1/en not_active Abandoned
- 2010-12-08 EP EP10795843.1A patent/EP2526338B1/en active Active
- 2010-12-08 CN CN201810606868.4A patent/CN109028009A/en active Pending
- 2010-12-08 WO PCT/US2010/059389 patent/WO2011090576A2/en active Application Filing
- 2010-12-08 MX MX2012008402A patent/MX2012008402A/en unknown
- 2010-12-08 CN CN2010800656186A patent/CN102859276A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1684011A1 (en) * | 2004-12-29 | 2006-07-26 | Son S.R.L. | Steam generator |
Non-Patent Citations (2)
| Title |
|---|
| 吴味隆等: "《锅炉及锅炉房设备》", 31 May 2006 * |
| 赵志宏等: "2008t/h锅炉汽包疲劳寿命分析", 《华北电力技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2012008402A (en) | 2012-10-09 |
| EP2526338A2 (en) | 2012-11-28 |
| US20110174240A1 (en) | 2011-07-21 |
| EP2526338B1 (en) | 2017-01-11 |
| WO2011090576A3 (en) | 2012-07-05 |
| WO2011090576A2 (en) | 2011-07-28 |
| CN102859276A (en) | 2013-01-02 |
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Application publication date: 20181218 |