EP1398564A1 - Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens - Google Patents

Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens Download PDF

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Publication number
EP1398564A1
EP1398564A1 EP02020251A EP02020251A EP1398564A1 EP 1398564 A1 EP1398564 A1 EP 1398564A1 EP 02020251 A EP02020251 A EP 02020251A EP 02020251 A EP02020251 A EP 02020251A EP 1398564 A1 EP1398564 A1 EP 1398564A1
Authority
EP
European Patent Office
Prior art keywords
steam generator
flow
heating surface
evaporator
flow medium
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.)
Withdrawn
Application number
EP02020251A
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German (de)
English (en)
French (fr)
Inventor
Joachim Franke
Rudolf Kral
Eberhard Wittchow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP02020251A priority Critical patent/EP1398564A1/de
Priority to TW092122992A priority patent/TW200409883A/zh
Priority to US10/527,278 priority patent/US7116899B2/en
Priority to JP2004535205A priority patent/JP4272622B2/ja
Priority to AU2003270122A priority patent/AU2003270122A1/en
Priority to CNB03821489XA priority patent/CN100523604C/zh
Priority to CA2498205A priority patent/CA2498205C/en
Priority to EP03750460A priority patent/EP1554522B1/de
Priority to PCT/EP2003/009569 priority patent/WO2004025176A1/de
Publication of EP1398564A1 publication Critical patent/EP1398564A1/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines

Definitions

  • the invention relates to a method for operating a Steam generator with one in one in an approximately horizontal Heating gas direction arranged flowable heating gas channel Evaporator continuous heating surface, which is a number of Flow through a flow medium connected in parallel Steam generator tubes, each one approximately vertical arranged, from the flow medium in the downward direction Downflow piece through which flow can flow and one on the flow medium side downstream, approximately vertically arranged and can be flowed through by the flow medium in the upward direction
  • the evaporator flow heating surface is designed so that a compared to a another steam generator tube of the same evaporator flow heating surface multi-heated steam generator tube in comparison to the further steam generator tube higher throughput of the flow medium having. It also affects a steam generator to carry out the procedure.
  • the In a gas and steam turbine plant, the is relaxed Work equipment or heating gas contained in the gas turbine Heat used to generate steam for the steam turbine.
  • the heat transfer takes place in a downstream of the gas turbine Heat recovery steam generator, in which usually a Number of heating surfaces for water preheating, for steam generation and is arranged for steam superheating.
  • the heating surfaces are connected to the water-steam cycle of the steam turbine.
  • the water-steam cycle usually comprises several e.g. three, pressure levels, each pressure level an evaporator heating surface can have.
  • a continuous steam generator In contrast to a natural or forced circulation steam generator, a continuous steam generator is not subject to any pressure limitation, so that for live steam pressures it is far above the critical pressure of water (P Kri ⁇ 221 bar) - where it is not possible to distinguish between the phases of water and steam and therefore no phase separation - can be interpreted.
  • a high live steam pressure promotes high thermal efficiency and thus low CO 2 emissions from a fossil-fired power plant.
  • a continuous steam generator has a simple construction in comparison to a circulation steam generator and can therefore be produced with particularly little effort.
  • the use of a steam generator designed according to the continuous flow principle as waste heat steam generator of a gas and steam turbine system is therefore particularly favorable in order to achieve a high overall efficiency of the gas and steam turbine system with a simple construction.
  • a different one Heating of neighboring steam generator tubes can also, especially in the mouth area of collectors Damage to the steam generator pipes or the collector.
  • a steam generator is known from EP 0 944 801 B1 is suitable for a layout in horizontal construction and also has the mentioned advantages of a once-through steam generator.
  • This is the evaporator heating surface of the known steam generator connected as a continuous heating surface and such designed that a compared to another steam generator tube same continuous heating surface multi-heated steam generator tube one compared to the other steam generator tube has higher throughput of the flow medium.
  • Under Pass-through heating surface is generally a heating surface to understand the flow for the flow principle is designed. That of the interconnected as a continuous heating surface Flow medium supplied to evaporator heating surface is in a single pass through this continuous heating surface or by a plurality of series connected Continuous heating surface system completely evaporated.
  • the evaporator heating surface connected as a continuous heating surface of the known steam generator thus shows in the type of flow characteristic a natural circulation evaporator heating surface (Natural circulation characteristic) when different occur Heating individual steam generator tubes a self-stabilizing Behavior that requires no outside influence to equalize the outlet temperatures also on differently heated, fluid medium side steam generator pipes connected in parallel.
  • the invention is therefore based on the object of a method to operate a steam generator of the type mentioned above, with the one in a comparatively simple way high degree of flow stability when operating the Evaporator flow heating surface is accessible. Furthermore is said to be a particularly suitable one for carrying out the method Steam generators of the type mentioned above can be specified.
  • this object is achieved according to the invention solved in that the flow medium of the evaporator flow heating surface is fed such that it is in the downpipe piece a flow velocity of the respective steam generator tube of more than a predetermined minimum speed having.
  • the invention is based on the consideration that a particularly high flow stability and therefore a special one high level of operational safety for the steam generator
  • the above type is achievable by possible causes consequently suppressed flow instabilities become.
  • it can be seen as one of these possible causes an occurrence of steam bubbles in the Downpipe section of the respective steam generator tube viewed become. If steam bubbles form in the downpipe section should, this could be in the downpipe section located water column and thus a movement perform against the direction of flow of the flow medium.
  • the flow direction of the flow medium opposite movement of possibly existing Consistently preventing steam bubbles should be done by a suitable specification of the operating parameters a forced Entrainment of the steam bubbles in the actual flow direction of the flow medium can be ensured.
  • This is achievable by feeding the evaporator continuous heating surface with flow medium in a suitable manner, wherein a sufficiently high flow velocity of the flow medium the desired entrainment effect in the steam generator tubes on the possibly existing or emerging Steam bubbles causes.
  • the flow rate is advantageous of the flow medium in the downpipe section of the respective steam generator pipe set such that in the permissible operating range in any case, take away any that may be present Steam bubbles are guaranteed. This will be advantageous as the minimum velocity for the flow velocity of the flow medium in the downpipe section of the respective Steam generator tube to take the steam bubbles required flow rate, increased if necessary by a suitably chosen safety margin.
  • the stated task is thereby solved that the evaporator flow heating surface on the flow medium side another evaporator continuous heating surface is connected upstream.
  • the evaporator system of the steam generator is thus of the type a multi-stage design, the further Evaporator continuous heating surface in the manner of a pre-evaporator for suitable conditioning of the flow medium its entry into the actual evaporator continuous heating surface is provided.
  • the actual evaporator continuous heating surface serves, however, in the manner of a second evaporator stage to complete the evaporation of the flow medium.
  • the further evaporator once-through heating surface is also expedient taken for a self-stabilizing Flow behavior through consistent use of a natural circulation characteristic designed in the respective steam generator tubes.
  • the further evaporator continuous heating surface includes advantageously a number of to flow through the Flow medium steam generator tubes connected in parallel. It is expediently designed such that a comparison to another steam generator tube of the further evaporator continuous heating surface multi-heated steam generator pipe a higher compared to the other steam generator tube Has flow rate of the flow medium.
  • the further evaporator flow heating surface of the steam generator from the aforementioned, U-shaped steam generator tubes is formed, the further evaporator flow heating surface to avoid disabilities from there possibly existing vapor bubbles expediently from essentially vertically aligned, for the flow through the flow medium steam generator tubes provided from bottom to top educated.
  • the further evaporator flow heating surface thus exclusively from riser pipe pieces educated.
  • the one that is provided anyway Property of the further evaporator continuous heating surface namely a self-stabilizing circulation characteristic, consistently used to simplify distribution.
  • a self-stabilizing circulation characteristic namely now seen in succession in the heating gas direction arranged and thus differently heated steam generator tubes on the output side with approximately the same steam conditions lead to a common outlet collector. In this becomes the flow medium flowing out of the steam generator tubes mixed and for forwarding to a subsequent one Heating surface system without affecting the mixture achieved homogenization. So a separate, downstream of the further continuous heating surface and comparatively complex distribution system is not required.
  • the further evaporator flow heating surface preferably in type of a tube bundle a number of in the direction of the heating gas seen one behind the other pipe layers, each of which seen from a number of side by side in the heating gas direction arranged steam generator tubes is formed. That of the others Evaporator continuous heating surface on the flow medium side subsequent distribution of the flow medium with savings a complex distribution system can be particularly simple be carried out by in a further advantageous embodiment the other evaporator flow heating surface one of the number corresponding to the steam generator pipes in each pipe position Number of with their longitudinal axis substantially parallel to Assigned outlet manifolds to the heating gas direction is. This leads to each outlet collector Steam generator tube of each tube layer.
  • the exit collectors are advantageously arranged above the heating gas duct.
  • the Evaporator continuous heating surface forming steam generator tubes Due to the substantially U-shaped configuration of the Evaporator continuous heating surface forming steam generator tubes is their inflow area in the upper area or above the heating gas duct.
  • the assigned to the further evaporator continuous heating surface arranged above the heating gas duct and with its longitudinal direction each essentially parallel to the direction of flow of the heating gas aligned outlet collector is there an interconnection of the evaporator flow heating surface with the further evaporator flow heating surface with a particularly small Effort is made possible by the or each exit collector the further evaporator flow heating surface in an advantageous Design with an associated entry collector the downstream of the fluid medium Evaporator continuous heating surface in one structural unit is integrated.
  • Such an arrangement enables direct overflow from the further evaporator continuous heating surface escaping flow medium in the flow medium side downstream steam generator tubes of the first-mentioned evaporator continuous heating surface.
  • this arrangement there is one Continuation of the further evaporator continuous heating surface flowing medium into the evaporator flow heating surface almost without affecting the in the outlet collector the further evaporator continuous heating surface by mixing achieved homogenization possible.
  • Elaborate distribution or connecting lines between the outlet header the further continuous heating surface and the inlet collector of the Continuous heating surface and assigned mixing and distribution elements can thus be omitted, and in general the Cable routing comparatively simple.
  • the steam generator tubes the evaporator flow heating surface on the inlet side in a common, perpendicular to the longitudinal direction of the collector units aligned level at the respective assigned Entry collector connected.
  • the steam generator is expediently used as a waste heat steam generator a gas and steam turbine plant used.
  • the steam generator is advantageously one on the hot gas side Downstream gas turbine.
  • This circuit can be used expediently Additional firing to increase the gas turbine the heating gas temperature may be arranged.
  • the flow rate of the water-steam mixture can in particular be set so high that possibly in the downpipe section of the respective steam generator pipe existing vapor bubbles are reliably carried away and in the riser pipe downstream of the respective downpipe section can be transferred.
  • the steam generator tubes of the evaporator continuous heating surface is therefore one of the flow direction of the flow medium opposite movement of the vapor bubbles safely excluded, so that a particularly high flow stability and thus a particularly high level of operational security for the steam generator with such an evaporator flow heating surface is guaranteed.
  • the steam generator shown in FIG. 1 with an evaporator section 1 is one in the manner of a heat recovery steam generator Gas turbine, not shown, connected downstream on the exhaust gas side.
  • the steam generator 1 has a surrounding wall 2 which one in an approximately horizontal one, indicated by the arrows 4 Hot gas direction x hot gas duct through which flow 6 forms for the exhaust gas from the gas turbine.
  • Hot gas direction x hot gas duct through which flow 6 forms for the exhaust gas from the gas turbine.
  • the heating gas duct 6 is a number - in the exemplary embodiment two - from after Flow principle designed evaporator heating surfaces 8, 10 arranged, the for the flow of a flow medium W, D are connected in series.
  • That formed from the evaporator continuous heating surfaces 8, 10 multi-stage evaporator system is with undevaporated flow medium W acted upon by a single pass the evaporator flow heating surfaces 8, 10 evaporate and after the exit from the evaporator flow heating surface 8 as Steam D removed and usually for further overheating Superheater heating surfaces is supplied.
  • That from the evaporator continuous heating surfaces 8, 10 formed evaporator system is in the water-steam cycle, not shown Steam turbine switched.
  • In addition to this evaporator system are in the water-steam cycle of the steam turbine Number of further heating surfaces, not shown in FIG. 1 which are, for example, superheaters, Medium pressure evaporator, low pressure evaporator and / or can be preheaters.
  • the evaporator flow heating surface 8 of the steam generator 1 comprises in the manner of a tube bundle a variety of Flow through the flow medium W connected in parallel Steam generator tubes 12.
  • the steam generator tubes arranged side by side in this way 12 is an associated one on the flow medium side Entry collector 14 in front and a common exit collector 16 downstream.
  • the evaporator continuous heating surface 8 is designed such that they are used for feeding the steam generator tubes 12 comparatively low mass flow density is suitable, wherein the steam generator tubes 12 have a natural circulation characteristic exhibit. With this natural circulation characteristic, an im Comparison to another steam generator tube 12 of the same Evaporator flow heating surface 8 more heated steam generator tube 12 one compared to the other steam generator tube 12 higher throughput of the flow medium W. To do this with particularly simple constructive means on particularly reliable Way, includes the evaporator flow heating surface 8 two in line on the flow medium side switched segments. In the first segment, each steam generator tube comprises 12 of the continuous heating surface 8 approximately vertically arranged, from the flow medium W in the downward direction Flowable downpipe section 20. In the second Each steam generator tube 12 comprises a segment of the downpipe segment Approximately 20 downstream of the fluid medium vertically arranged and from the flow medium W in the upward direction Flowable riser pipe section 22.
  • the riser pipe piece 22 is associated with it Downpipe piece 20 connected via an overflow piece 24.
  • Each steam generator tube 12 of the evaporator continuous heating surface 8 has, as can be seen in FIG. 1, an almost U-shaped one Form on, with the legs of the U through the downpipe 20 and the riser pipe 22 and the connecting bend are formed by the overflow piece 24.
  • steam generator tube 12 With one like that designed steam generator tube 12 generates the geodetic Pressure contribution of the flow medium W in the area of the Downpipe section 20 - in contrast to the area of the riser section 22 - a flow promoting and not a flow restricting Pressure contribution.
  • the one in the downpipe section 20 water column located on unevaporated flow medium W "pushes" the flow of the respective Steam generator tube 12 still on instead of hindering them.
  • the steam generator tube 12 has one overall comparatively low pressure loss.
  • each steam generator tube is 12 each in the entry area of his downpipe section 20 and in the outlet area of its riser 22 in the kind of a suspended construction on the ceiling of the heating gas duct 6 hung or fastened.
  • the lower ends spatially of the respective downpipe piece 20 and the respective riser pipe piece 22, through their overflow piece 24 with each other connected, however, are not directly spatially on Heating gas channel 6 fixed. Elongations of these segments of the Steam generator tubes 12 can thus be tolerated without risk of damage, the respective overflow piece 24 as an expansion curve acts.
  • This arrangement of the steam generator tubes 12 is thus mechanically particularly flexible and with regard to thermal Stresses insensitive to differential expansion.
  • U-shaped steam generator tubes 12 occur generally in the downpipe 20 of a steam generator tube 12 steam bubbles on. These vapor bubbles could go against the Flow direction of the flow medium W in the respective downpipe section 20 rise and thus the stability of the flow and also hinder the reliable operation of the steam generator 1.
  • the steam generator is 1 for feeding the evaporator continuous heating surface 8 with already partially evaporated flow medium W designed.
  • the flow medium D, W is fed into the Evaporator flow heating surface 8 is provided such that the Flow medium D, W in the downpipe section 20 of the respective steam generator tube 12 a flow rate of more than has a predefinable minimum speed.
  • This is again dimensioned such that due to the sufficiently high Flow velocity of the flow medium D, W in each Downpipe piece 20 the vapor bubbles present there reliable in the direction of flow of the flow medium D, W entrained and over the respective overflow piece 24 in the each downstream pipe section 22 are transferred.
  • the flow medium D, W in the downpipe pieces 20 of the steam generator tubes 12 is ensured that the supply of the flow medium D, W in the Evaporator flow heating surface 8 with a sufficient for this high steam content and / or with a sufficiently high level Enthalpy is provided.
  • the evaporator flow heating surface 8 of the Steam generator 1 on the flow medium side as a further continuous heating surface the evaporator continuous heating surface 10 upstream.
  • the evaporator continuous heating surface 10 is thus in the Kind of a pre-evaporator designed so that the evaporator system through the further evaporator continuous heating surface 10 and the evaporator flow heating surface connected downstream of this on the flow medium side 8 is formed.
  • the kind of Additional evaporator once-through heating surface provided for the pre-evaporator 10 is spatially colder Area of the heating gas channel 6 and thus on the heating gas side arranged downstream of the evaporator continuous heating surface 8.
  • the Evaporator flow heating surface 8, however, is larger Proximity to the entry area of the heating gas channel 6 for the from the Gas gas flowing out of the gas turbine is arranged and thus during operation a comparatively strong heat input exposed to the heating gas.
  • the further evaporator continuous heating surface 10 is in turn also by a number of to flow through the flow medium W steam generator tubes 30 connected in parallel educated.
  • the steam generator tubes 30 are with her Longitudinal axis aligned essentially vertically and for one Flow through the flow medium W from a lower inlet area to an upper exit area, i.e. from below upwards, laid out.
  • a particularly high stability of the The through-flow heating surface is to ensure flow 10 also designed such that a comparison to another steam generator tube 30 more heated Steam generator tube 30 in comparison to the other steam generator tube 30 has higher throughput of the flow medium W.
  • the further evaporator continuous heating surface 10 is dimensioned in such a way that in the operating case that in the downstream Evaporator flow heating surface 8 flowing fluid D, W a flow rate greater than that for taking along existing in the respective downpipe pieces 20 Vapor bubbles have the required minimum speed.
  • the design is aimed at high operational security achievable to a particular degree, by essentially absorbing heat during operation equal to the evaporator flow heating surface 8 and distributed to the further evaporator once-through heating surface 10 is.
  • the evaporator flow heating surfaces 8, 10 and this forming steam generator tubes 12, 30 are therefore in the embodiment dimensioned such that the total heat input into the evaporator continuous heating surface 8 forming steam generator tubes 12 approximately the heat input into which the further evaporator continuous heating surface 10 forming steam generator tubes 30 corresponds.
  • Considering of the mass flows occurring shows the further evaporator once-through heating surface 10 one in view to the number of steam generator tubes 12 on the flow medium side downstream flow heating surface 8 suitable selected number of steam generator tubes 30.
  • the further evaporator flow heating surface 10 in the manner of a Pipe bundle a number of consecutively as seen in the heating gas direction x arranged pipe layers 32, each of which one Number of juxtaposed seen in the heating gas direction x Steam generator tubes 30 is formed, and of which only one steam generator tube 30 is visible in FIG. 1 is.
  • the steam generator tubes 30 of each tube layer 32 are included each a common one, with its longitudinal direction essentially aligned perpendicular to the heating gas direction x Entry collector 34 upstream. Entry collectors 34 are in this case only schematically indicated in FIG Water supply system 36 connected, which is a distribution system for the needs-based distribution of the inflow of flow medium W may include the entry collector 34.
  • each of the essentially outlet collectors arranged parallel to one another and next to one another 38, of which only one is visible in FIG. 1 is, with its longitudinal axis substantially parallel to Hot gas direction x aligned.
  • the number of exit collectors 38 is 30 in the number of steam generator tubes adapted to each tube layer 32.
  • Each outlet header 38 is an entry header 14 which is the another evaporator flow heating surface 10 on the flow medium side downstream evaporator flow heating surface 8 assigned. Due to the u-shaped design of the evaporator continuous heating surface 8 is the respective entry collector 14 as well as the respective outlet collector 38 above the heating gas channel 6. The fluid medium side-by-side connection the evaporator flow heating surface 8 with the further evaporator continuous heating surface 10 is on particularly easy way possible by each exit collector 38 with the entry collector 14 assigned to it integrated into a structural unit 40. Due to the structural or constructive unit 40 is an immediate overflow of the flow medium W from the further evaporator once-through heating surface 10 in the evaporator continuous heating surface 8, without a comparatively complex distribution or connection system would be required.
  • each two adjacent Pipe layers 32 in a direction perpendicular to the heating gas direction x seen offset from each other, so that regarding the arrangement of the steam generator tubes 30 essentially diamond-shaped basic pattern results.
  • the outlet collectors 38 of which in FIG. 2 only one is shown, positioned so that in each Outlet collector 38 from each tube layer 32, one each Steam generator pipe 30 opens. It is also recognizable that each exit header 38 with an associated entry header 14 for that of the other evaporator continuous heating surface 10 downstream evaporator heating surfaces 8 is integrated into a structural unit 40.
  • Figure 2 can also be seen that the evaporator flow heating surface 8 forming steam generator tubes 12 also a number of consecutively seen in the heating gas direction x form lying pipe layers, the in the direction of the heating gas x seen first two pipe layers from the riser pipe pieces 22 of the steam generator tubes 12 are formed, the output side in the outlet header 16 for the vaporized Flow medium D open.
  • the seen in the heating gas direction x The next two pipe layers, however, are from the downpipe pieces 20 of the steam generator tubes 12 formed, the input side connected to an associated entry collector 14 are.
  • FIG. 3 shows a partial side view of the entry area the steam generator tubes 12 and the outlet area of the steam generator tubes 30 in the respectively assigned structural unit 40, which on the one hand the outlet header 38 for a number of the further evaporator continuous heating surface 10 forming steam generator tubes 30 and the other Entry collector 14 for two of the evaporator continuous heating surface 8 forming steam generator tubes 12 comprises.
  • flowing out of the steam generator tubes 30 into the outlet header 38 entering flow medium D, W on direct Path in the assigned to the evaporator continuous heating surface 8 Entry collector 14 can overflow.
  • W initially strikes one Base plate 42 of the structural comprising the inlet header 14 Unit 40.
  • swirling takes place and particularly intimate mixing of the flow medium D, W, before this from the entry collector 14 into the Downpipe pieces 20 of the associated steam generator tubes 12 transgresses.
  • each overflow piece 46 is assigned to each steam generator tube 12.
  • Each overflow piece 46 runs obliquely to Heating gas direction x and connects the upper area of each assigned steam generator tube 12 with the respective Outlet opening 48 of the inlet header 14.
  • FIG. 4 To further clarify the pipe guides in the area of their Entries into and out of the building unit 40 in FIG. 4 is a number of such structural units 40 shown in front view, the one designated by IV in FIG Cutting line is used. It can be seen that the two structural elements shown on the left in FIG Units 40, which in the area of their entry collectors 14 trained for the downstream steam generator tubes 12 Are shown at the end, each over the overflow pieces 46 the downstream downpipe pieces 20 of the steam generator tubes 12 are connected.
  • FIG structural units 40 each in the area of their as Outlet collector 38 for the steam generator tubes 30 of the others Evaporator continuous heating surface 10 trained front Area shown.
  • the illustration shows that the pipe layers 32 lying one behind the other in the structural unit 40 merging steam generator tubes 30 in simply angled shape introduced into the structural unit 40 are.
  • the steam generator 1 according to Figure 1 and with the special configurations according to Figures 2 to 4 is special for one safe operation of the evaporator continuous heating surface 8.
  • the steam generator 1 when the steam generator 1 is operating, it is ensured that that the essentially U-shaped evaporator continuous heating surface 8 with flow medium D, W with a flow rate of more than a given one Minimum speed is applied. This will achieved that in the downpipe pieces 20 of the continuous heating surface 8 forming steam generator tubes existing steam bubbles entrained and in the downstream pipe section 22 are spent.
  • W ensure the evaporator flow heating surface is fed 8 using the additional evaporator flow heating surface upstream of this 10 such that that in the evaporator flow heating surface 8 inflowing flow medium D, W is a vapor content or enthalpy of more than one specifiable minimum vapor content or more than a specifiable Has minimum enthalpy.
  • the operating parameters are the evaporator continuous heating surfaces 8,10 designed or dimensioned so that in all Operating points are the steam content or the enthalpy of the flow medium D, W when entering the evaporator continuous heating surface 8 lies above suitably specified characteristic curves, as exemplified in Figures 5a, 5b.
  • the further continuous heating surface 10, which is designed to comply with these conditions, is dimensioned, i.e., for example, with regard to the type, number and design of the steam generator tubes 30 which form it, taking into account the heat available within the heating gas duct 6, which is designed for its spatial positioning, to these boundary conditions customized.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP02020251A 2002-09-10 2002-09-10 Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens Withdrawn EP1398564A1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP02020251A EP1398564A1 (de) 2002-09-10 2002-09-10 Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens
TW092122992A TW200409883A (en) 2002-09-10 2003-08-21 Method to operate a steam-generaaor in horizontally situated construction and steam-generator to perform said method
US10/527,278 US7116899B2 (en) 2002-09-10 2003-08-28 Operating method for a horizontal steam generator and a steam generator for carrying out said method
JP2004535205A JP4272622B2 (ja) 2002-09-10 2003-08-28 横置形ボイラの運転方法とこの運転方法を実施するためのボイラ
AU2003270122A AU2003270122A1 (en) 2002-09-10 2003-08-28 Operating method for a horizontal steam generator and a steam generator for carrying out said method
CNB03821489XA CN100523604C (zh) 2002-09-10 2003-08-28 运行卧式蒸汽发生器的方法和执行该方法的蒸汽发生器
CA2498205A CA2498205C (en) 2002-09-10 2003-08-28 Operating method for a horizontal steam generator and a steam generator for carrying out said method
EP03750460A EP1554522B1 (de) 2002-09-10 2003-08-28 Verfahren zum betreiben eines dampferzeugers in liegender bauweise
PCT/EP2003/009569 WO2004025176A1 (de) 2002-09-10 2003-08-28 Verfahren zum betreiben eines dampferzeugers in liegender bauweise sowie dampferzeuger zur durchführung des verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02020251A EP1398564A1 (de) 2002-09-10 2002-09-10 Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens

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EP1398564A1 true EP1398564A1 (de) 2004-03-17

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EP02020251A Withdrawn EP1398564A1 (de) 2002-09-10 2002-09-10 Verfahren zum Betreiben eines Dampferzeugers in liegender Bauweise sowie Dampferzeuger zur Durchführung des Verfahrens
EP03750460A Expired - Lifetime EP1554522B1 (de) 2002-09-10 2003-08-28 Verfahren zum betreiben eines dampferzeugers in liegender bauweise

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EP03750460A Expired - Lifetime EP1554522B1 (de) 2002-09-10 2003-08-28 Verfahren zum betreiben eines dampferzeugers in liegender bauweise

Country Status (8)

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US (1) US7116899B2 (ja)
EP (2) EP1398564A1 (ja)
JP (1) JP4272622B2 (ja)
CN (1) CN100523604C (ja)
AU (1) AU2003270122A1 (ja)
CA (1) CA2498205C (ja)
TW (1) TW200409883A (ja)
WO (1) WO2004025176A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006087299A2 (de) * 2005-02-16 2006-08-24 Siemens Aktiengesellschaft Dampferzeuger in liegender bauweise
US8784991B2 (en) 2005-04-04 2014-07-22 Chemetall Gmbh Process for coating metallic surfaces with an aqueous composition, and this composition

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101450892B (zh) * 2007-11-30 2013-04-10 上海吴泾化工有限公司 改进的裂解气热量利用方法及所使用的原料汽化器
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AU2003270122A1 (en) 2004-04-30
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US20060081359A1 (en) 2006-04-20
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US7116899B2 (en) 2006-10-03

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