EP2310747A2 - Method for continuously conditioning gas, preferably natural gas - Google Patents

Method for continuously conditioning gas, preferably natural gas

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Publication number
EP2310747A2
EP2310747A2 EP09775870A EP09775870A EP2310747A2 EP 2310747 A2 EP2310747 A2 EP 2310747A2 EP 09775870 A EP09775870 A EP 09775870A EP 09775870 A EP09775870 A EP 09775870A EP 2310747 A2 EP2310747 A2 EP 2310747A2
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EP
European Patent Office
Prior art keywords
gas
container
natural gas
heated
flow
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
EP09775870A
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German (de)
French (fr)
Other versions
EP2310747B1 (en
Inventor
Andreas Lenk
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.)
EWE Gasspeicher GmbH
Original Assignee
Rohr- und Maschinenanlagentechnik GmbH
Energieversorgung Weser Ems AG
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Application filed by Rohr- und Maschinenanlagentechnik GmbH, Energieversorgung Weser Ems AG filed Critical Rohr- und Maschinenanlagentechnik GmbH
Priority to PL09775870T priority Critical patent/PL2310747T3/en
Publication of EP2310747A2 publication Critical patent/EP2310747A2/en
Application granted granted Critical
Publication of EP2310747B1 publication Critical patent/EP2310747B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2400/00—Pretreatment and supply of gaseous fuel
    • F23K2400/10—Pretreatment

Definitions

  • the invention relates to a method for the continuous conditioning of gas, preferably natural gas, before it is fed into a pipeline, in particular a pipeline network for supplying consumers, in which the pressurized gas removed from a memory, relaxed and before or after its relaxation is heated to a predetermined temperature by a diverted partial flow of the gas stored is mixed with oxygen and the fuel gas thus formed is burned and in which the accumulated heat energy, the stored gas is heated.
  • gas preferably natural gas
  • the heat required for the heating is provided by catalytic "combustion" of a portion of the Aus headingstroms in a reactor
  • fuel gas eg., Natural gas L
  • the heat utilization takes place by the mixing of the hot combustion gases as partial gas stream into the main gas stream behind the reactor
  • the gas discharged from the storage tank has a pressure of 70 - 150 bar at a temperature of 5 - 30 ° C.
  • the catalytic "combustion" in the reactor requires an activation temperature of at least 180 0 C - 250 0 C. In order to reach the temperature, the diverted partial flow of the gas stored with
  • Oxygen is mixed and catalytically burned. The released
  • Heat can then be used to heat the stored gas to a temperature suitable for compensating for the Joule-Thomson effect associated with expansion and concomitant cooling.
  • Fuel gas remains because it was not converted.
  • the oxygen concentration increases and thus the risk of auto-ignition at the high pressures occurring here. A safe execution of the known method is not guaranteed.
  • the invention has for its object to improve the known method so that a safe operation for conditioning is possible. This object is achieved by the features of claim 1. Further developments and advantageous embodiments will become apparent from the claims 2 to 9.
  • Provided plant allow a targeted driving for the separation of water from the natural gas and thus the gas conditioning with respect to the Wasserdampftauddling or the drying of natural gas.
  • This method will continue to be coupled with special separator stages with multicyclones and filter elements as well as condensate discharges for optimum and safe driving and reduction and contamination of condensate (water) precipitated from natural gas with higher hydrocarbon chains.
  • the user of the method according to the invention also benefits from the compact construction of a plant designed for its implementation in terms of space and plant costs, since all essential parts of a plant consisting of separator, preheating, gas pressure reduction and measurement, gas drying and filtration already in the Ver- integrated drive technology that can be structurally unite in a device.
  • the absence of moving parts, pumps and similar equipment reduces the operating and maintenance costs of carrying out the process.
  • the combination of the catalytic conversion of oxygen and hydrocarbons to the catalyst of the reactor vessel, with the expansion directly into the mixing space and / or tangential to the cooling at the inlet around the second vessel, the reactor causes the optimum precipitation of the condensates and condensation the water vapor from the catalytic reaction out, without local generation of exhaust gases, with a calculated efficiency of ⁇ 1, 1, using the condensation and separation of the water vapor, and the heat of condensation.
  • the method advantageously takes advantage of the high inlet pressures of the natural gas and the usable cooling caused by the expansion to supply line pressure to separate the condensates from the natural gas.
  • the method according to the invention is supported by the direct preheating in the first container and in the region of the supply lines into the second container, through which immediate dissolution or suppression of the gas hydrate formation can be utilized. If the use of the pressure gradient is not sufficient to achieve complete condensation, an absorption medium for binding the water vapor in the natural gas stream can be injected in support of the entry of the main gas stream into the second container.
  • the absorbent, z As triethylene glycol is discharged together with the condensate from the conditioning process and can, like the condensate, collected and then processed, so it is reusable.
  • control of the conditioning process takes place dew-point-controlled via the inlet and outlet of the natural gas in the am Entry and exit of the natural gas in a device provided for carrying out the method according to the invention installed dew point by selective variation of oxygen addition and variation of the flow control over the control valves of the main gas flow to the tangential inlet via the supply lines and the reactor or
  • the method is particularly safe, especially since the addition of oxygen in the mixing container can still be assigned a safety device with nitrogen extinguishing.
  • the flow direction is indicated here by arrows.
  • branch point 3 is from the main line 2 from a branch line 4, via which a partial flow of the natural gas stored in a mixing vessel 5 is passed.
  • gaseous oxygen is passed into the mixing vessel, which mixes in the mixing vessel 5 with the supplied via the branch line 4 natural gas partial stream.
  • a fuel gas is thus formed, which is passed via the fuel gas line 7 into the first container 8 with closed container walls 9.
  • the first container forms the preheating station, which is designed as a jet pump, which has a driver nozzle 10 and a catching nozzle 11 having.
  • the supplied from the fuel gas line 7 at relatively high pressure fuel gas is injected into the first container 8, wherein the emerging from the driver nozzle 10 free-jet is collected by the catching nozzle 11 and mixed on his way with befindlichem in the container 8 exhaust gas and heated, which is supplied via the suction line 12 as a partial exhaust stream from a catalytic combustion process.
  • the heated fuel gas mixture flows via the mixing line 13 into a reactor chamber 14 of a second container 15, which is designed as a housing enclosing the reactor 14, a mixing chamber 17 and a separator 18.
  • the jet pump located in the first container 8 sucks hot natural gas out of the reactor 14 via the suction line 12 and mixes it with the cold fuel gas which flows in from the mixing container 5.
  • the second vessel 14 contains a reactor bed in the form of a bed of catalytic granules vaporized with palladium and / or platinum.
  • Preheated fuel gas enters the second container 14 via the preheating line 13.
  • the temperature is adjusted by suitable control technology so that an activation temperature of the reactor bed in the second container 14 of about 180 ° C to 250 0 C is reached.
  • the fuel gas burns catalytically and the heat released in this process is partly transferred to the second container 14 via the outer circumferential surface. flowing, supplied via the leads 21 and 22 supplied cold natural gas.
  • the catalytically burned fuel gases enter from the second container 14 directly into the mixing chamber 17, where they mix with the flowing through the supply line 22 cold natural gas.
  • the separator 18 is flowed through from the mixing chamber 17 derived, now heated natural gas, which precipitated in the separator 18 more condensate and the natural gas is also filtered.
  • the separator 18 also has a condensate drain 25.
  • Denoted by 26 is a device for assisting the separation of condensate, by means of which an absorbent, for. B. triethylene glycol for binding the water vapor in the gas stream of the supply lines 21 and 22 is injected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Before being fed into a pipe, particularly a network of pipes for the supply of consumers, gas, preferably natural gas, is continuously conditioned. The pressurized gas is removed from a reservoir, expanded, and heated to a predefined temperature before or after the expansion thereof in that a branched-off partial flow of the fed-out natural gas is mixed with oxygen and the resulting burnable gas is catalytically burned. The fed-out gas is heated with the thermal energy that is produced. For this purpose, a partial exhaust gas flow is branched off from a hot exhaust gas flow released during the catalytic combustion and conducted into a first container together with the cold burnable gas. The burnable gas is mixed with the supplied exhaust gas flow in the first container and is heated, and the mixture composed of the exhaust gas and burnable gas preheated in this way is conducted away from the first container into a second container, where it is subjected to the catalytic combustion, the heat of which is used to heat the fed-out gas to be conditioned to the respectively desired temperature.

Description

Verfahren zum kontinuierlichen Konditionieren von Gas, vorzugsweise Erdgas Process for the continuous conditioning of gas, preferably natural gas
Die Erfindung bezieht sich auf ein Verfahren zum kontinuierlichen Konditionieren von Gas, vorzugsweise Ergas, vor seiner Einspeisung in eine Rohr- leitung, insbesondere ein Rohrleitungsnetz zur Versorgung von Verbrauchern, bei dem das unter Druck stehende Gas aus einem Speicher entnommen, entspannt und vor oder nach seiner Entspannung auf eine vorbestimmte Temperatur erwärmt wird, indem ein abgezweigter Teilstrom des ausgespeicherten Gases mit Sauerstoff vermischt und das dadurch gebildete Brenngas verbrannt wird und bei dem mit der dabei anfallenden Wärmeenergie das ausgespeicherte Gas erwärmt wird.The invention relates to a method for the continuous conditioning of gas, preferably natural gas, before it is fed into a pipeline, in particular a pipeline network for supplying consumers, in which the pressurized gas removed from a memory, relaxed and before or after its relaxation is heated to a predetermined temperature by a diverted partial flow of the gas stored is mixed with oxygen and the fuel gas thus formed is burned and in which the accumulated heat energy, the stored gas is heated.
Ergas muß bei seiner Ausspeicherung aus Untergrundspeichern zur Kompensation des Joule-Thomson-Effektes vor der Druckreduzierung erwärmt werden. Eine Möglichkeit ist ein Verfahren der vorbezeichnetenErgas must be heated during its withdrawal from underground storage to compensate for the Joule-Thomson effect before the pressure reduction. One possibility is a procedure of the aforementioned
Gattung, welches in der EP 0 920 578 beschrieben ist. Dabei wird die für die Erwärmung notwendige Wärme durch katalytische „Verbrennung" eines Teils des Ausspeicherstroms in einem Reaktor bereitgestellt. Bei dem bekannten Verfahren werden durch die katalytische Umsetzung von Sauerstoff mit Brenngas, z. B. Erdgas L, im stark unterstöchiometrischen Mischungsbereich am Katalysator direkt im Gasstrom Temperaturen von bis zu 400 0C erreicht. Die Wärmenutzung erfolgt durch das Einmischen der heißen Verbrennungsgase als Teilgasstrom in den Hauptgasstrom hinter dem Reaktor. Das aus dem Speicher abgeleitete Ergas hat einen Druck von 70 - 150 bar bei einer Temperatur von 5 - 30 °C.Genus which is described in EP 0 920 578. The heat required for the heating is provided by catalytic "combustion" of a portion of the Ausspeicherstroms in a reactor In the known method by the catalytic reaction of oxygen with fuel gas, eg., Natural gas L, in the strong substoichiometric mixing area on the catalyst directly in the gas stream reaches temperatures of up to 400 0 C. The heat utilization takes place by the mixing of the hot combustion gases as partial gas stream into the main gas stream behind the reactor The gas discharged from the storage tank has a pressure of 70 - 150 bar at a temperature of 5 - 30 ° C.
Die katalytische „Verbrennung" im Reaktor benötigt eine Aktivierungs- temperatur von mindestens 180 0C - 250 0C. Um die Temperatur zu erreichen, wird der abgezweigte Teilstrom des ausgespeicherten Gases mitThe catalytic "combustion" in the reactor requires an activation temperature of at least 180 0 C - 250 0 C. In order to reach the temperature, the diverted partial flow of the gas stored with
Sauerstoff vermischt und katalytisch verbrannt wird. Die dabei freigesetzteOxygen is mixed and catalytically burned. The released
Wärme kann sodann wiederum genutzt werden, um das ausgespeicherte Gas auf eine Temperatur zu erwärmen, die geeignet ist, den bei der Entspannung und der damit verbundenen Abkühlung auftretenden Joule-Thomson-Effekt zu kompensieren.Heat can then be used to heat the stored gas to a temperature suitable for compensating for the Joule-Thomson effect associated with expansion and concomitant cooling.
Bei dem bekannten Verfahren besteht stets das Risiko, daß der Reaktor, in dem die katalytische Umsetzung des Brenngases unter Freisetzung von Wärme abläuft, durch die niedrigen Temperaturen des ausgespeicherten Erdgases kalt geblasen wird, so daß der Sauerstoff im Brenngas verbleibt, ohne umgesetzt zu werden. Dies kann grundsätzlich dadurch ausgeschlossen werden, daß das Brenngas-Sauerstoffgemisch auf die Katalysatoraktivierungstemperatur von 180 - 250 0C vor der Entspannung erwärmt wird. Ohne diese Vorwärmung gerät der bekannte Prozeß schon nach kurzer Zeit aus dem Gleichgewicht, weil die Aktivierungstemperatur im Reaktor unterschritten wird. Andererseits kann das Zünden bei einem Vorgang der Zu- dosierung von Sauerstoff in Brenngase, hier Erdgas, niemals ganz ausgeschlossen werden. Dies Risiko wird sogar höher, wenn bei Unterschreitung der Aktivierungstemperatur des Reaktors der Sauerstoff imIn the known method, there is always a risk that the reactor in which the catalytic conversion of the fuel gas proceeds with the release of heat, is cold blown by the low temperatures of the stored natural gas, so that the oxygen remains in the fuel gas, without being reacted. This can be excluded in principle by the fact that the fuel gas-oxygen mixture is heated to the catalyst activation temperature of 180 - 250 0 C prior to relaxation. Without this preheating the known process gets out of balance after a short time, because the activation temperature in the reactor is exceeded. On the other hand, the ignition in a process of metering oxygen into fuel gases, here natural gas, can never be completely excluded. This risk becomes even higher if, when the activation temperature of the reactor falls below the oxygen in the
Brenngas verbleibt, weil er nicht umgesetzt wurde. Die Sauerstoffkonzentration steigt und damit auch das Risiko der Selbstzündung bei den hier auftretenden hohen Drücken. Eine sichere Ausführung des bekannten Verfahrens ist nicht gewährleistet.Fuel gas remains because it was not converted. The oxygen concentration increases and thus the risk of auto-ignition at the high pressures occurring here. A safe execution of the known method is not guaranteed.
Der Erfindung liegt die Aufgabe zugrunde das bekannte Verfahren so zu verbessern, daß ein sicherer Betrieb zur Konditionierung möglich ist. Diese Aufgabe ist erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Weiterbildungen und vorteilhafte Ausgestaltungen ergeben sich aus den Ansprüchen 2 bis 9.The invention has for its object to improve the known method so that a safe operation for conditioning is possible. This object is achieved by the features of claim 1. Further developments and advantageous embodiments will become apparent from the claims 2 to 9.
55
Die konstruktive Umsetzung der erfindungsgemäßen Verfahrenstechnik, unter Nutzung der Abkühlung von Ergas bei der Expansion, bei der Gestaltung der Einlasse der Entspannungsventile zur Kühlung und Mischung der Gasströme vor und hinter dem zweiten Behälter (Reaktor), gekoppelt mit Taupunkt- LO messungen am Eintritt und Austritt des Erdgases in die zur Durchführung desThe constructive implementation of the process technology according to the invention, using the cooling of natural gas during expansion, in the design of the inlet of the expansion valves for cooling and mixing the gas streams before and after the second container (reactor), coupled with dew point LO measurements at the inlet and outlet of natural gas in which to carry out the
Verfahrens vorgesehene Anlage, ermöglichen eine gezielte Fahrweise zur Abscheidung von Wasser aus dem Erdgas und somit der Gaskonditionierung in Bezug auf den Wasserdampftaupunkt bzw. die Trocknung des Erdgases.Provided plant, allow a targeted driving for the separation of water from the natural gas and thus the gas conditioning with respect to the Wasserdampftaupunkt or the drying of natural gas.
15 Gekoppelt wird dieses Verfahren weiterhin mit speziellen Abscheiderstufen mit Multizyklonen und Filterelementen sowie mit Kondensatausschleusungen zur optimalen und sicheren Fahrweise und Reduzierung und der Kontamination des aus dem Erdgas ausgefällten Kondensats (Wasser) mit höheren Kohlenwasserstoffketten.15 This method will continue to be coupled with special separator stages with multicyclones and filter elements as well as condensate discharges for optimum and safe driving and reduction and contamination of condensate (water) precipitated from natural gas with higher hydrocarbon chains.
.0.0
Dies stellt einen wesentlichen wirtschaftlichen Vorteil gegenüber der bekannten Technik zur Gasaufbereitung bzw. Konditionierung dar. Die anfallenden Kondensate werden einfach über einen nachgeschalteten Filter von Kohlenwasserstoffen getrennt und sind einfach und kostengünstig zu >5 entsorgen.This represents a significant economic advantage over the known technique for gas conditioning or conditioning. The resulting condensates are easily separated by a downstream filter of hydrocarbons and are easy and inexpensive to dispose of> 5.
Auch profitiert der Anwender des erfindungsgemäßen Verfahrens von der kompakten Bauweise einer für seine Durchführung vorgesehenen Anlage in Bezug auf Platz und Anlagenkosten, da alle wesentlichen Teile einer Aus- 30 Speicheranlage, bestehend aus Abscheider, Vorwärmung, Gasdruckreduzierung und -messung, Gastrocknung und Filterung bereits in die Ver- fahrenstechnik integriert sind, die sich konstruktiv in einer Vorrichtung vereinigen lassen.The user of the method according to the invention also benefits from the compact construction of a plant designed for its implementation in terms of space and plant costs, since all essential parts of a plant consisting of separator, preheating, gas pressure reduction and measurement, gas drying and filtration already in the Ver- integrated drive technology that can be structurally unite in a device.
Das Nichtvorhandensein beweglicher Teile, Pumpen und ähnlicher Ein- richtungen, reduziert die Betriebs- und Wartungskosten für die Durchführung des Verfahrens. Die Kombination der katalytischen Umsetzung von Sauerstoff und Kohlenwasserstoffen am Katalysator des Reaktorbehälters, mit der Entspannung direkt in den Mischraum und/oder tangential zur Kühlung am Eintritt um den zweiten Behälter, den Reaktor, herum, bewirken die optimale Aus- Scheidung der Kondensate und das Kondensieren des Wasserdampfes aus der katalytischen Umsetzung heraus, ohne lokale Erzeugung von Abgasen, und zwar mit einem rechnerischen Wirkungsgrad der < 1 ,1 ist, unter der Nutzung der Kondensation und Abscheidung des Wasserdampfes, sowie der Kondensationswärme.The absence of moving parts, pumps and similar equipment reduces the operating and maintenance costs of carrying out the process. The combination of the catalytic conversion of oxygen and hydrocarbons to the catalyst of the reactor vessel, with the expansion directly into the mixing space and / or tangential to the cooling at the inlet around the second vessel, the reactor, causes the optimum precipitation of the condensates and condensation the water vapor from the catalytic reaction out, without local generation of exhaust gases, with a calculated efficiency of <1, 1, using the condensation and separation of the water vapor, and the heat of condensation.
Das Verfahren nutzt mit Vorteil die hohen Eintrittdrücke des Erdgases und die durch die Expansion auf Versorgungsleitungsdruck verursachten nutzbaren Abkühlungen zur Abtrennung der Kondensate aus dem Erdgas. Unterstützt wird das erfindungsgemäße Verfahren durch die direkte Vorwärmung im ersten Behälter sowie im Bereich der Zuleitungen in den zweiten Behälter, durch welche sich sofortige Auflösung bzw. Unterbindung der Gashydratbildung nutzen läßt. Sollte die Nutzung des Druckgefälles nicht ausreichend sein, um eine vollständige Kondensation zu erreichen, so kann in den Eintritt des Hauptgasstromes in den zweiten Behälter unterstützend ein Absorptions- mittel zur Bindung des Wasserdampfes im Erdgasstrom eingedüst werden.The method advantageously takes advantage of the high inlet pressures of the natural gas and the usable cooling caused by the expansion to supply line pressure to separate the condensates from the natural gas. The method according to the invention is supported by the direct preheating in the first container and in the region of the supply lines into the second container, through which immediate dissolution or suppression of the gas hydrate formation can be utilized. If the use of the pressure gradient is not sufficient to achieve complete condensation, an absorption medium for binding the water vapor in the natural gas stream can be injected in support of the entry of the main gas stream into the second container.
Das Absorptionsmittel, z. B. Triethylenglykol, wird zusammen mit dem Kondensat aus dem Konditionierungsprozeß ausgeschleust und kann, wie das Kondensat, aufgefangen und anschließend aufbereitet werden, womit es erneut nutzbar ist.The absorbent, z. As triethylene glycol is discharged together with the condensate from the conditioning process and can, like the condensate, collected and then processed, so it is reusable.
Verfahrenstechnisch erfolgt die Regelung des Konditionierungsprozesses taupunktgesteuert über die am Eintritt und Austritt des Erdgases in die am Eintritt und Austritt des Erdgases in einer zur Durchführung des erfindungsgemäßen Verfahrens vorgesehene Vorrichtung installierten Taupunktmessungen und zwar durch gezielte Variation der Sauerstoffzugabe und Variation der Mengenregelung über die Regelventile des Hauptgasstromes zum tangentialen Einlaß über die Zuleitungen und um den Reaktor bzw. dieIn terms of process technology, the control of the conditioning process takes place dew-point-controlled via the inlet and outlet of the natural gas in the am Entry and exit of the natural gas in a device provided for carrying out the method according to the invention installed dew point by selective variation of oxygen addition and variation of the flow control over the control valves of the main gas flow to the tangential inlet via the supply lines and the reactor or
Zugabe direkt in die Mischzone bzw. den Mischraum zwischen dem zweiten Behälter und einem nachgeschalteten Abscheider. Damit ist das Verfahren besonders sicher, zumal der Sauerstoffzugabe in den Mischbehälter noch eine Sicherheitseinrichtung mit Stickstofflöschung zugeordnet werden kann.Add directly into the mixing zone or the mixing space between the second container and a downstream separator. Thus, the method is particularly safe, especially since the addition of oxygen in the mixing container can still be assigned a safety device with nitrogen extinguishing.
Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens, aus dem sich weitere erfinderische Merkmale ergeben, ist in der Zeichnung in Form eines Fließdiagramms schematisch dargestellt.An embodiment of the method according to the invention, from which further inventive features arise, is shown schematically in the drawing in the form of a flow chart.
Das zu konditionierende Erdgas wird, vor seiner Einspeisung in eine Rohrleitung 1 eines nicht weiter dargestellten Rohrleitungsnetzes zur Versorgung von Verbrauchern, einem ebenfalls nicht weiter dargestellten Speicher entnommen und strömt aus dem Speicher über eine Hauptleitung 2 ab. Die Strömungsrichtung ist hier durch Pfeile angedeutet.The natural gas to be conditioned, before being fed into a pipeline 1 of a pipeline network, not shown, for the supply of consumers, taken from a memory also not shown and flows out of the memory via a main line 2 from. The flow direction is indicated here by arrows.
Im Abzweigpunkt 3 geht von der Hauptleitung 2 eine Zweigleitung 4 ab, über die ein Teilstrom des ausgespeicherten Erdgases in einen Mischbehälter 5 geleitet wird.In the branch point 3 is from the main line 2 from a branch line 4, via which a partial flow of the natural gas stored in a mixing vessel 5 is passed.
Über die Leitung 6 wird in den Mischbehälter 5 gasförmiger Sauerstoff geleitet, der sich im Mischbehälter 5 mit dem über die Zweigleitung 4 zugeführten Erdgas-Teilstrom vermischt.Via the line 6 5 gaseous oxygen is passed into the mixing vessel, which mixes in the mixing vessel 5 with the supplied via the branch line 4 natural gas partial stream.
In dem Mischbehälter 5 wird somit ein Brenngas gebildet, das über die Brenn- gasleitung 7 in den ersten Behälter 8 mit geschlossenen Behälterwänden 9 geleitet wird. Der erste Behälter bildet die Vorwärmstation, die als Strahlpumpe ausgebildet ist, welche eine Treiberdüse 10 und eine Fangdüse 11 aufweist. Über die Treiberdüse 10 wird das von der Brenngasleitung 7 unter relativ hohem Druck zugeführte Brenngas in den ersten Behälter 8 eingedüst, wobei der aus der Treiberdüse 10 austretende Freistahl von der Fangdüse 11 aufgefangen wird und sich auf seinem Weg mit im Behälter 8 befindlichem Abgas vermischt und erwärmt, welches über die Saugleitung 12 als Abgasteilstrom aus einem katalytischen Verbrennungsprozeß zugeführt wird.In the mixing vessel 5, a fuel gas is thus formed, which is passed via the fuel gas line 7 into the first container 8 with closed container walls 9. The first container forms the preheating station, which is designed as a jet pump, which has a driver nozzle 10 and a catching nozzle 11 having. About the driver nozzle 10, the supplied from the fuel gas line 7 at relatively high pressure fuel gas is injected into the first container 8, wherein the emerging from the driver nozzle 10 free-jet is collected by the catching nozzle 11 and mixed on his way with befindlichem in the container 8 exhaust gas and heated, which is supplied via the suction line 12 as a partial exhaust stream from a catalytic combustion process.
Das erwärmte Brenngasgemisch strömt über die Mischleitung 13 in eine Reaktorkammer 14 eines zweiten Behälters 15, der als ein den Reaktor 14, eine Mischkammer 17 und einen Abscheider 18 umschließendes Gehäuse ausgebildet ist.The heated fuel gas mixture flows via the mixing line 13 into a reactor chamber 14 of a second container 15, which is designed as a housing enclosing the reactor 14, a mixing chamber 17 and a separator 18.
Die in dem ersten Behälter 8 befindliche Strahlpumpe saugt über die Saugleitung 12 heißes Erdgas aus dem Reaktor 14 und vermischt es mit dem kalten Brenngas, welches aus dem Mischbehälter 5 zuströmt.The jet pump located in the first container 8 sucks hot natural gas out of the reactor 14 via the suction line 12 and mixes it with the cold fuel gas which flows in from the mixing container 5.
Das aus der Hauptleitung 2 unter Vorschaltung von Entspannungsventilen über die Zuleitungen 21 und 22 in das Gehäuse des zweiten Behälters 15 eintretende kalte Erdgas umströmt den Reaktorbehälter 14, wobei es um den Reaktorbehälter 14 herum mit Leitelementen 23, die an dessen Umfang wendeiförmig angeordnet sind, gelenkt wird.The entering from the main line 2 under Vorschaltung of expansion valves via the leads 21 and 22 in the housing of the second container 15 cold natural gas flows around the reactor vessel 14, wherein it around the reactor vessel 14 around with guide elements 23 which are arranged helically at the periphery thereof becomes.
Der zweite Behälter 14 enthält ein Reaktorbett in Form einer Schüttung aus katalytischem Korn, das mit Palladium und/oder Platin bedampft ist.The second vessel 14 contains a reactor bed in the form of a bed of catalytic granules vaporized with palladium and / or platinum.
Über die Vorwärmleitung 13 tritt vorgewärmtes Brenngas in den zweiten Behälter 14 ein. Die Temperatur wird durch geeignete Steuerungstechnik so eingestellt, daß eine Aktivierungstemperatur des Reaktorbettes im zweiten Behälter 14 von etwa 180 °C bis 250 0C erreicht wird.Preheated fuel gas enters the second container 14 via the preheating line 13. The temperature is adjusted by suitable control technology so that an activation temperature of the reactor bed in the second container 14 of about 180 ° C to 250 0 C is reached.
Das Brenngas verbrennt katalytisch und die dabei freigesetzte Wärme wird zum Teil über die Außenmantelfläche an das den zweiten Behälter 14 um- strömende, über die Zuleitungen 21 und 22 zugeführte kalte Erdgas übertragen.The fuel gas burns catalytically and the heat released in this process is partly transferred to the second container 14 via the outer circumferential surface. flowing, supplied via the leads 21 and 22 supplied cold natural gas.
Es sind vorrichtungsmäßige Maßnahmen getroffen, damit das über die Außenmantelfläche vorgewärmte Erdgas mit dem über die Zuleitung 22 zugeleiteten kalten Erdgas gemischt wird.Device measures are taken to ensure that the natural gas preheated via the outer jacket surface is mixed with the cold natural gas supplied via the supply line 22.
Die katalytisch verbrannten Brenngase treten aus dem zweiten Behälter 14 direkt in die Mischkammer 17 ein, wo sie sich mit dem über die Zuleitung 22 eingeströmten kalten Erdgas vermischen.The catalytically burned fuel gases enter from the second container 14 directly into the mixing chamber 17, where they mix with the flowing through the supply line 22 cold natural gas.
Durch diese Abkühlung, einerseits an der Außenmantelfläche des Reaktors 14, andererseits durch den Übertritt der heißen Brenngase in das kalte Erdgas in der Mischkammer 17, entsteht sofort Hydratbildung mit entsprechender Kondensatabscheidung, welche über die Kondensatableitungen 23 und 24 abgeleitet werden.By this cooling, on the one hand on the outer circumferential surface of the reactor 14, on the other hand by the passage of the hot fuel gases into the cold natural gas in the mixing chamber 17, immediately hydrate formation with appropriate condensate, which are discharged through the condensate drains 23 and 24.
Der Abscheider 18 wird von aus der Mischkammer 17 abgeleitetem, nunmehr erwärmten Erdgas durchströmt, wobei im Abscheider 18 weiteres Kondensat ausgeschieden und das Erdgas auch gefiltert wird.The separator 18 is flowed through from the mixing chamber 17 derived, now heated natural gas, which precipitated in the separator 18 more condensate and the natural gas is also filtered.
Auch der Abscheider 18 verfügt über eine Kondensatableitung 25.The separator 18 also has a condensate drain 25.
Mit 26 ist eine Einrichtung zur Unterstützung der Kondensatabscheidung be- zeichnet, mittels der ein Absorptionsmittel, z. B. Triethylenglykol zur Bindung des Wasserdampfes in den Gasstrom der Zuleitungen 21 und 22 eingedüst wird.Denoted by 26 is a device for assisting the separation of condensate, by means of which an absorbent, for. B. triethylene glycol for binding the water vapor in the gas stream of the supply lines 21 and 22 is injected.
Mit 27 ist eine Sicherheitseinrichtung bezeichnet, über die auch die Sauer- stoffzufuhr 6 gesteuert und geregelt wird. Taupunktmeßfühler am Eingang und Ausgang der Vorrichtung zur Durchführung des Verfahrens sind mit 28 und 29 bezeichnet. Die Verknüpfungen mit Druckmeßfühlern und Temperaturmeßfühlern sind hier durch gestrichelte Linien lediglich angedeutet. 27 denotes a safety device, by means of which the oxygen feed 6 is also controlled and regulated. Dew point sensors at the entrance and exit of the apparatus for carrying out the method are designated 28 and 29. The links with pressure sensors and temperature sensors are indicated here by dashed lines only.

Claims

Patentansprüche claims
1, Verfahren zum kontinuierlichen Konditionieren von Gas, vorzugsweise Erdgas, vor seiner Einspeisung in eine Rohrleitung, insbesondere ein Rohr- leitungsnetz zur Versorgung von Verbrauchern, bei dem das unter Druck stehende Gas aus einem Speicher entnommen, entspannt und vor oder nach seiner Entspannung auf eine vorbestimmte Temperatur erwärmt wird, indem ein abgezweigter Teilstrom des ausgespeicherten Erdgases mit Sauerstoff vermischt und das dadurch gebildete Brenngas katalytisch verbrannt wird und bei dem mit der dabei anfallenden Wärmeenergie das ausgespeicherte Gas erwärmt wird, d a d u r c h g e k e n n z e i c h n e t, daß von einem bei der katalytischen Verbrennung freigesetzten heißen Abgasstrom ein Abgasteilstrom abgezweigt, und gemeinsam mit dem kalten Brenngas in einen ersten Behälter (8) geleitet wird, daß das Brenngas in dem ersten Behälter (8) mit dem zugeleiteten Abgasteilstrom vermischt und dabei erwärmt wird, und daß das derart vorgewärmte Gemisch aus Abgas und Brenngas aus dem ersten Behälter (8) in einen zweiten Behälter (15) abgeleitet wird, in welchem es der katalytischen Verbrennung unterzogen wird, mit deren Wärme das ausgespeicherte und zu konditionierende Gas auf die jeweils gewünschte Temperatur erwärmt wird.1 , a method for the continuous conditioning of gas, preferably natural gas, before it is fed into a pipeline, in particular a pipeline network for supplying consumers, in which the pressurized gas taken from a memory, relaxed and before or after its relaxation to a predetermined temperature is heated by a diverted partial flow of the stored natural gas mixed with oxygen and the fuel gas thus formed is catalytically burned and is heated with the resulting heat energy, the stored gas, characterized in that of a liberated in the catalytic combustion hot exhaust gas flow Diverted exhaust gas stream, and is passed together with the cold fuel gas in a first container (8), that the fuel gas in the first container (8) is mixed with the supplied exhaust gas partial stream and thereby heated, and that the thus preheated mixture of exhaust gas and fuel gas the first container (8) is discharged into a second container (15), in which it is subjected to the catalytic combustion, with the heat of which the stored and to be conditioned gas is heated to the particular desired temperature.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das ausgespeicherte Erdgas unmittelbar vor seiner Einleitung in den zweiten Behälter (15) entspannt wird.2. The method according to claim 1, characterized in that the stored natural gas is expanded immediately before its introduction into the second container (15).
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das entspannte Erdgas in Teilströme aufgeteilt wird, von denen mindestens einer um einen3. The method according to claim 2, characterized in that the expanded natural gas is divided into partial streams, of which at least one by one
Reaktor (14) des zweiten Behälters (15) und mindestens ein weiterer Teilstrom in eine Mischkammer (17) des zweiten Behälters (15) eingeleitet wird, wobei in die Mischkammer (17) gleichzeitig ein aus dem Reaktor (14) abgehender Teilstrom erhitzten Erdgases eingeleitet wird.Reactor (14) of the second container (15) and at least one further partial flow is introduced into a mixing chamber (17) of the second container (15), wherein in the mixing chamber (17) at the same time from the reactor (14) outgoing partial flow of heated natural gas is introduced.
4_. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der die Misch- kammer (17) verlassende Gasstrom durch einen Abscheider (18) geleitet wird.4_. Process according to Claim 3, characterized in that the gas stream leaving the mixing chamber (17) is passed through a separator (18).
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die in dem Reaktor (14) der Mischkammer (17) sowie in dem Abscheider (18) anfallenden Kondensate in eine Kondensatfalle abgeleitet werden.5. The method according to claim 4, characterized in that in the reactor (14) of the mixing chamber (17) and in the separator (18) resulting condensates are discharged into a condensate trap.
6^ Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß zur Unterstützung der Kondensatabscheidung ein Absorptionsmittel zur Bindung des Wasserdampfes in den Gasstrom eingedüst wird.6 ^ A method according to claim 5, characterized in that an absorbent for binding the water vapor is injected into the gas stream to support the condensate separation.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß als Absorptionsmittel Triethylenglykol verwendet wird.7. The method according to claim 6, characterized in that triethylene glycol is used as the absorbent.
8_, Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Taupunkt des ausgespeicherten Erdgases zumindest vor dem Eintritt in den ersten Behälter (8) und nach dem Austritt aus dem zweiten8_, Method according to one of the preceding claims, characterized in that the dew point of the natural gas stored at least before entering the first container (8) and after exiting from the second
Behälter (15) gemessen wird, daß, in Abhängigkeit von gemessenen Taupunktwerten, eine Sauerstoffzugabe und eine Mengenregelung des in den zweiten Behälter (15) geleiteten Erdgasstromes variiert wird.Container (15) is measured that, in dependence on measured dew point values, an oxygen addition and a flow control of the guided into the second container (15) natural gas flow is varied.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die Variationen von Sauerstoffzugabe und Mengenregelung programmgesteuert durchgeführt werden. 9. The method according to claim 8, characterized in that the variations of oxygen addition and flow control are performed programmatically.
EP09775870.0A 2008-08-04 2009-05-12 Method for continuously conditioning gas, preferably natural gas Not-in-force EP2310747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09775870T PL2310747T3 (en) 2008-08-04 2009-05-12 Method for continuously conditioning gas, preferably natural gas

Applications Claiming Priority (2)

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DE102008036243A DE102008036243A1 (en) 2008-08-04 2008-08-04 Process for the continuous conditioning of gas, preferably natural gas
PCT/DE2009/000665 WO2010015214A2 (en) 2008-08-04 2009-05-12 Method for continuously conditioning gas, preferably natural gas

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EP2310747B1 EP2310747B1 (en) 2014-12-03

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EP (1) EP2310747B1 (en)
CA (1) CA2734365A1 (en)
DE (1) DE102008036243A1 (en)
DK (1) DK2310747T3 (en)
ES (1) ES2531829T3 (en)
HU (1) HUE024525T2 (en)
PL (1) PL2310747T3 (en)
PT (1) PT2310747E (en)
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WO (1) WO2010015214A2 (en)

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US3330773A (en) * 1963-03-28 1967-07-11 Du Pont Process for preparing gaseous mixtures
US5003782A (en) * 1990-07-06 1991-04-02 Zoran Kucerija Gas expander based power plant system
DE4127883A1 (en) * 1991-08-22 1993-02-25 Abb Patent Gmbh DEVICE FOR HEAT GENERATION BY CATALYTIC COMBUSTION
US5606858A (en) 1993-07-22 1997-03-04 Ormat Industries, Ltd. Energy recovery, pressure reducing system and method for using the same
DE19633674C2 (en) * 1996-08-21 1998-07-16 Hamburger Gaswerke Gmbh In-line gas preheating
FR2833863B1 (en) * 2001-12-20 2004-08-20 Air Liquide CATALYTIC REACTOR, CORRESPONDING INSTALLATION AND REACTION METHOD
US7108838B2 (en) * 2003-10-30 2006-09-19 Conocophillips Company Feed mixer for a partial oxidation reactor
EP1865249B1 (en) * 2006-06-07 2014-02-26 2Oc A gas pressure reducer, and an energy generation and management system including a gas pressure reducer
RU67236U1 (en) * 2007-05-10 2007-10-10 Дмитрий Тимофеевич Аксенов SYSTEM FOR PREPARING NATURAL GAS FOR COMBUSTION IN BOILER UNITS WITH COMPLEX USE OF OVER PRESSURE GAS PRESSURE FOR ELECTRICITY AND COOLING, GAS DIVERSION

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Title
See references of WO2010015214A2 *

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PL2310747T3 (en) 2015-04-30
PT2310747E (en) 2015-02-24
US20110120011A1 (en) 2011-05-26
US8899045B2 (en) 2014-12-02
HUE024525T2 (en) 2016-01-28
EP2310747B1 (en) 2014-12-03
ES2531829T3 (en) 2015-03-20
WO2010015214A2 (en) 2010-02-11
RU2011103900A (en) 2012-09-10
CA2734365A1 (en) 2010-02-11
DK2310747T3 (en) 2015-03-02
DE102008036243A1 (en) 2010-02-11
RU2470225C2 (en) 2012-12-20
WO2010015214A3 (en) 2010-04-01

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