EP1059486A2 - Procédé et générateur de vapeur pour récupérer la chaleur d'un gaz chaud de processus - Google Patents

Procédé et générateur de vapeur pour récupérer la chaleur d'un gaz chaud de processus Download PDF

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Publication number
EP1059486A2
EP1059486A2 EP00110875A EP00110875A EP1059486A2 EP 1059486 A2 EP1059486 A2 EP 1059486A2 EP 00110875 A EP00110875 A EP 00110875A EP 00110875 A EP00110875 A EP 00110875A EP 1059486 A2 EP1059486 A2 EP 1059486A2
Authority
EP
European Patent Office
Prior art keywords
double
tube
heat exchanger
pipe
container
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.)
Granted
Application number
EP00110875A
Other languages
German (de)
English (en)
Other versions
EP1059486B1 (fr
EP1059486A3 (fr
Inventor
Michael Schötz
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.)
Borsig GmbH
Original Assignee
Borsig GmbH
BBP Environment GmbH
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 Borsig GmbH, BBP Environment GmbH filed Critical Borsig GmbH
Publication of EP1059486A2 publication Critical patent/EP1059486A2/fr
Publication of EP1059486A3 publication Critical patent/EP1059486A3/fr
Application granted granted Critical
Publication of EP1059486B1 publication Critical patent/EP1059486B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F22B1/1884—Hot gas heating tube boilers with one or more heating tubes
    • 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
    • F22B1/1838—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 the hot gas being under a high pressure, e.g. in chemical installations

Definitions

  • the invention relates to a method for generating steam by means of hot Process gases, in particular by means of the non-catalytic splitting of Hydrocarbons based on partial oxidation at high pressures and high temperatures generated process gases, in which the Process gases for the generation of saturated steam in a large number of individual flows by means of pipes through a standing container filled with water and are withdrawn in single streams from this and from the container Saturated steam is discharged.
  • hydrocarbons e.g. Gases and oil or oil residues (Residuals) used.
  • gasifying natural gas Natural gas
  • the Pollution of the pipes carrying the gases is relatively low.
  • Residual chemicals in the gas at least temporarily, cause higher pollution, that so-called fouling occur.
  • This object is achieved in that the withdrawn from the container Process gas individual flows each on a tube of a double tube heat exchanger be guided, the other pipe with a different fluid flow is applied, and that at least one tube of the Double tube heat exchanger can be shut off on the gas outlet side.
  • a gas outlet side can be easily Barrier at the end of the gas outlet to use the residual heat Double tube heat exchanger done without everyone else Process gas individual flows must be shut down operationally.
  • the barrier becomes the flow rate in the neighboring Single flows in the waste heat boiler and in the double tube heat exchanger increased and the pipes carrying the individual flows are both in the waste heat boiler also in the double tube heat exchanger due to the speed increase of Deposits cleaned.
  • the barrier can be a purely individual barrier; however, it is also conceivably a small number of double tube heat exchangers merge on the gas outlet side and the barrier after Merge. This procedure also provides in Another one compared to switching off an entire tube bundle heat exchanger Single barrier.
  • Double-tube heat exchangers are known per se (cf. VDI Heat Atlas 1953 - Approximate Heat transfer figures for some types of heat exchangers Bl. C b 5). They preferably consist of at least two coaxial ones Double pipe sections, the inner pipe sections over a -ggfl. detachable connecting bend and its outer pipe sections over one extending perpendicular to the double pipe sections Connection bends are connected to each other.
  • the double tube heat exchanger can preferably be used as a feed water preheater be used for the water to be supplied to the container.
  • the other pipe will have at least part of the double pipe heat exchanger the feed water to be supplied to the container for preheating the Feed water charged.
  • the other pipe it is also possible for the other pipe to have at least one part the double tube heat exchanger with saturated steam removed from the tank is applied to produce superheated steam (superheated steam).
  • the invention is also directed to a heat recovery steam generator for generation of steam by means of hot process gases, especially by means of the catalytic fission of hydrocarbons based on the partial Oxidation occurs at high pressures and high temperatures Process gases, with a waste heat boiler including one with water in predetermined height filled standing container, a variety of in Containers arranged and acted upon with the process gases and from pipes and a device for pulling out of saturated steam from the container.
  • the waste heat steam generator is characterized in that each pipe from the waste heat boiler tank with the one tube of a double tube heat exchanger is connected, the other Pipe with a different fluid flow such.
  • B. water or saturated steam can be acted upon and one pipe of which can be shut off by means of a valve.
  • the claims 7 to 16 are directed to advantageous embodiments of the Heat recovery steam generator according to the invention.
  • the steam generator shown in FIG. 1 has a waste heat boiler 1 standing container, in the water space 2 a plurality of candles 3rd is arranged.
  • a plurality of candles 3rd is arranged.
  • Each candle has several tubes that are spirally inserted into each other on (candles with only one tube are also possible).
  • the candle 4 only two Pipes 4a and 4b assigned.
  • the pipes are inserted into each other spirally each surrounded by a flow guide cylinder (jacket) 3c or 4c.
  • Each the spiral pipes are connected to an inlet 3d and 4d.
  • a water level 7 is maintained in the interior 2.
  • About one Distributor 8 becomes feed water along the inner surface of the waste heat boiler fed and flows into candles 3 and 4 from below (cf. the arrows in Waste heat boiler).
  • Saturated steam SD is extracted from the Waste heat boiler removed.
  • To prevent the gases from entering the candle tubes 3 and 4 to achieve particularly good cooling is one in the entrance area Water cooling is provided in the natural circulation, to which a pump 10 caused forced circulation is superimposed.
  • the pipe 3a is connected to a via a connecting line 11a Double tube heat exchanger 12 connected.
  • the double tube heat exchanger 12 consists of three vertically arranged coaxial double pipe sections 13, 14 and 15.
  • the connecting line 11a is with the inner tube 13a of the section 13 connected.
  • the inner tubes 13a, 14a and 15a of the sections 13, 14 and 15 are about arc sections 16 and 17 shown in Fig. 1 manner connected with each other.
  • the arc sections 16 and 17 can on their Inside with an erosion protection layer to increase the service life be provided. Also the arches can be compared to the straight cylindrical inner tube sections with greater wall thickness, to achieve the same effect.
  • the inner tube 15a is through one through one Valve 18 lockable line 19 connected to a collector 20.
  • the Collector 20 is via a line 21 with a gas scrubber, not shown connected.
  • the outer tubes 13b, 14b and 15b are perpendicular to the Connecting pipes 22 and 23 extending double pipe sections connected with each other.
  • the outer tube 15b is supplied by one with feed water pressurized distributor 24 supplied with feed water.
  • a fitting 18 ' arranged with which when the gas path of the Double pipe heat exchanger associated valve 18 of the water inlet to Double tube heat exchanger 12 can at least be throttled.
  • Throttling is beneficial to prevent yourself from locking yourself individual gas paths due to the decreasing water side Pressure loss around the pipes is too large an imbalance between the heated and unheated strands or paths.
  • an external rib as schematically shown as external rib 13a ' is shown on the inner tube 13 of the double tube heat exchanger 12 in Fig. 1.
  • the feed water overflows Connecting tube 23, outer tube 14b, connecting tube 22, outer tube 13b and via a line 25 to a collector 26, which has one or more Lines is connected to the distributor 8 inside the waste heat boiler 1.
  • the tube 4 is designed over a corresponding Double tube heat exchanger 27 with the collector 20 for the process gas, the Distributor 24 and the collector 26 connected to the feed water.
  • the embodiment according to FIG. 2 differs from that Embodiment according to FIG. 1 in that the coiled tubes Return lines 4aa and 3aa, which from the upper end of the candle 4th or 3 to the lower end of the candle and that the Double pipe sections of the double pipe heat exchangers 12 'and 27' are horizontal extend, the heat exchanger 27 'like the heat exchanger 27 in FIG. 1 connected to the associated tube 4a of the candle 4 via a line 28a is.
  • the tubes 3b and 4b are in the embodiments according to FIGS. 1 and 2 assigned in a corresponding manner double tube heat exchanger.
  • Each single strand or single pipe is one Double tube heat exchanger 29 downstream, the one Superheater section 30 and a preheating section 31.
  • the inner tube the upper double pipe section 13 of the superheater section 30 is about Line 28a supplied with the process gas, while the outer tube of the in 3, the lower double pipe section 15 shown via a distributor 32 with saturated steam brought in from the removal device 9 via line 33 is applied.
  • the steam superheated in the superheater section 30 becomes from the outer tube of the upper section 13 of the superheater via a Collector 34 and a line 35 discharged.
  • the process gas leaving the superheater section 30 enters the inner tube of the upper double pipe section 13 of the preheating section 31 fed to a collector 20, from which it is led to the gas scrubber.
  • the outer tube of the lower double tube section 15 of the preheater section 31 is supplied with feed water by a distributor 24. That from the upper double pipe section 13 of the preheater 31 removed preheated Feed water is the manifold 8 in the waste heat boiler via a collector 26 forwarded.
  • the arrows on manifolds 24 and 32 indicate that from here the corresponding double tube heat exchanger for the other single tubes or strands of feed water or saturated steam from the waste heat boiler are supplied and the arrows on the collectors 20, 26 and 34 indicate that here process gases, preheated feed water or superheated steam to be collected.
  • the tubes 3a, 3b and 4b are each one in a corresponding manner Assigned double tube heat exchanger.
  • FIG. 4 shows a section along the line IV-IV in FIG. 3 for illustration, that the four double tube heat exchangers 29, which are only used for example in the Waste heat boiler 1 correspond to four gas paths shown, modular can be arranged side by side, the components of the single double tube heat exchanger 29 itself in a vertical plane extend and the exemplary four heat exchangers in parallel to each other Layers are arranged. This leads to an extremely compact design. The modular design also leads to the minimization of any necessary Exchange times and / or to minimize spare parts inventory.
  • Such a compact design can also be arranged side by side Double tube heat exchanger of FIGS. 1 and 2 can be achieved.
  • Double tube heat exchanger leads to a reduction in all embodiments erosion and thus to a higher availability or service life.
  • Control device CON To regulate the hot gas outlet temperature from the heat boiler by means of individually assigned measuring devices TI die Exit temperature of the individual strand from the waste heat boiler 1 detected. The measured values are averaged in a control device CON.
  • This Control device CON is also the output signal of a Water level measuring device LT supplied.
  • the control device CON can if necessary also the hot steam temperature according to collector 34 via a Measuring device TIC can be switched on.
  • the control device CON controls one in the depending on a given setpoint Feed water supply provided feed water pump 36 to the Water level 7 in the boiler and thus the immersion depth of the pipes and thus whose heat absorption determines the gas outlet temperature adjust.
  • the trapezoid symbols 37 and 38 in the lines 3a and 4b in the waste heat boiler 1 or in the double tube heat exchangers 12, 27, 29 should indicate that here seen in the direction of gas flow, i.e. after the smaller trapezoidal surface, a cross-sectional narrowing is to take place at the flow rate in the following pipes or pipe sections.
  • the Diameters of the following pipes or pipe sections are in each case smaller according to the cross-sectional narrowing, i.e. both in the evaporator (Waste heat boiler) as well as in the double tube heat exchangers Preheater or a superheater is preferably carried out Pipe gradation.
  • the double-line symbols 39 represent so-called spectacle plug-in lenses can be used to adjust the partial load ratio.
  • the in the Fig. 1 to 3 used symbol 40 is intended to indicate that the connecting arches on simple way to the inner tubes of the coaxial double tube sections can be flanged.
  • the examples 1 and 2 the two lines 19 of the heat exchangers 12, 27 and 12 ', 27' in front of the process gas collector 20, on which also the other tubes 3b and 4b associated double tube heat exchanger connected on the gas side are brought together and upstream of the collector through a single valve 18 be cordoned off.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP00110875A 1999-06-10 2000-05-23 Procédé et générateur de vapeur pour récupérer la chaleur d'un gaz chaud de processus Expired - Lifetime EP1059486B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19926402 1999-06-10
DE19926402A DE19926402C1 (de) 1999-06-10 1999-06-10 Verfahren und Abhitzedampferzeuger zum Erzeugen von Dampf mittels heißer Prozessgase

Publications (3)

Publication Number Publication Date
EP1059486A2 true EP1059486A2 (fr) 2000-12-13
EP1059486A3 EP1059486A3 (fr) 2003-05-02
EP1059486B1 EP1059486B1 (fr) 2006-07-26

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EP00110875A Expired - Lifetime EP1059486B1 (fr) 1999-06-10 2000-05-23 Procédé et générateur de vapeur pour récupérer la chaleur d'un gaz chaud de processus

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EP (1) EP1059486B1 (fr)
AT (1) ATE334341T1 (fr)
DE (2) DE19926402C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100864383B1 (ko) * 2001-05-17 2008-10-20 쉘 인터내셔날 리서치 마챠피즈 비.브이. 증기 가열 장치 및 방법
MY136087A (en) 2001-10-22 2008-08-29 Shell Int Research Process to reduce the temperature of a hydrogen and carbon monoxide containing gas and heat exchanger for use in said process
DE102015220742A1 (de) 2015-10-23 2017-04-27 Arvos Gmbh Industrierußherstellungsanlage
ES2842423T3 (es) 2017-05-26 2021-07-14 Alfa Laval Olmi S P A Intercambiador de calor de carcasa y tubos
US11802687B2 (en) * 2021-02-06 2023-10-31 Uop Llc Method of efficiency enhancement of fired heaters without air preheat systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1959228A1 (de) 1969-11-26 1971-06-09 Lentjes Dampfkessel Ferd Verfahren zum Betrieb eines Dampfkessels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3121297C2 (de) * 1981-05-29 1984-05-17 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Vorrichtung zum Regeln der Temperatur eines korrosiven Gases, insbesondere Synthesegas
US4462339A (en) * 1983-08-29 1984-07-31 Texaco Development Corporation Gas cooler for production of saturated or superheated steam, or both
DE3602935A1 (de) * 1986-01-31 1987-08-06 Steinmueller Gmbh L & C Verfahren zum abkuehlen von aus einem vergasungsreaktor kommenden prozessgasen und waermetauscher zur durchfuehrung des verfahrens
CA1309907C (fr) * 1986-08-26 1992-11-10 Herman Johannes Lameris Procede de chauffage de la vapeur d'eau de refroidissement
US5603218A (en) * 1996-04-24 1997-02-18 Hooper; Frank C. Conversion of waste heat to power

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1959228A1 (de) 1969-11-26 1971-06-09 Lentjes Dampfkessel Ferd Verfahren zum Betrieb eines Dampfkessels

Also Published As

Publication number Publication date
DE19926402C1 (de) 2000-11-02
EP1059486B1 (fr) 2006-07-26
EP1059486A3 (fr) 2003-05-02
ATE334341T1 (de) 2006-08-15
DE50013212D1 (de) 2006-09-07

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