NO155304B - ENERGY SUPPLY SYSTEM FOR TANKER FOR LIQUID GAS. - Google Patents

ENERGY SUPPLY SYSTEM FOR TANKER FOR LIQUID GAS. Download PDF

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Publication number
NO155304B
NO155304B NO833628A NO833628A NO155304B NO 155304 B NO155304 B NO 155304B NO 833628 A NO833628 A NO 833628A NO 833628 A NO833628 A NO 833628A NO 155304 B NO155304 B NO 155304B
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NO
Norway
Prior art keywords
steam
generator unit
boiler
energy supply
gas
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Application number
NO833628A
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Norwegian (no)
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NO833628L (en
NO155304C (en
Inventor
Emanuel Hoehener
Egon Faber
Peter Rutz
Original Assignee
Sulzer Ag
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Publication date
Application filed by Sulzer Ag filed Critical Sulzer Ag
Publication of NO833628L publication Critical patent/NO833628L/en
Publication of NO155304B publication Critical patent/NO155304B/en
Publication of NO155304C publication Critical patent/NO155304C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F25J1/0025—Boil-off gases "BOG" from storages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0229—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock
    • F25J1/023—Integration with a unit for using hydrocarbons, e.g. consuming hydrocarbons as feed stock for the combustion as fuels, i.e. integration with the fuel gas system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0242—Waste heat recovery, e.g. from heat of compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0277—Offshore use, e.g. during shipping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0281—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc. characterised by the type of prime driver, e.g. hot gas expander
    • F25J1/0284—Electrical motor as the prime mechanical driver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
    • F25J1/0298—Safety aspects and control of the refrigerant compression system, e.g. anti-surge control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/22—Compressor driver arrangement, e.g. power supply by motor, gas or steam turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/30—Compression of the feed stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/70—Steam turbine, e.g. used in a Rankine cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/20—Control for stopping, deriming or defrosting after an emergency shut-down of the installation or for back up system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ocean & Marine Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pipeline Systems (AREA)

Description

• Oppfinnelsen angår et energiforsørgingssystem for flytende gass med dieselmotordrift, med et flytendegjørings-anlegg for den gass som oppstår i lagertankene og som drives av et motorgeneratoraggregat, en dampkjel for den varmemengde som fjernes for utnyttelse av denne varmemengde og videre med et dampturbin-generatoraggregat for fremstilling av elektrisk energi for det elektriske nett ombord. • The invention relates to an energy supply system for liquefied gas with diesel engine operation, with a liquefaction plant for the gas that occurs in the storage tanks and which is driven by a motor-generator unit, a steam boiler for the amount of heat that is removed for utilization of this amount of heat and further with a steam turbine-generator unit for production of electrical energy for the electrical grid on board.

Dette kjente prinsipp for et energiforsørgingssystem for tankskip med flytende gass er for tiden det mest økono-miske. En ulempe er imidlertid de høye investeringskostnader da sikkerhetsforskriftene krever et overskudd i flytendcgjør-ingsanlegget , dvs. at det må foreligge to flytendegjørings-anlegg hvor hvert anlegg må ha den fulle flytendegjørings-effekt og at det videre må foreligge et motor-generatoraggregat for drift av hvert anlegg. Det kreves videre at hvert flytendegjøringsanlegg skal kunne flytendegjøre den maksimalt mulige mengde fordampet gass. This known principle for an energy supply system for liquid gas tankers is currently the most economical. A disadvantage, however, is the high investment costs as the safety regulations require a surplus in the liquefaction plant, i.e. that there must be two liquefaction plants where each plant must have the full liquefaction effect and that there must also be a motor-generator unit for operation of each facility. It is further required that each liquefaction plant must be able to liquefy the maximum possible quantity of vaporized gas.

Oppfinnelsen tar sikte på å frembringe et energifor-sørgingssystem for tankskip med flytende gass av den innled-ningsvis beskrevne type, men som krever betydelig lavere investeringskostnader. Denne oppgave løses ifølge oppfinnelsen ved de i den karakteriserende del av patentkravet angitte trekk. The invention aims to produce an energy supply system for tankers with liquefied gas of the type described in the introduction, but which requires significantly lower investment costs. According to the invention, this task is solved by the features specified in the characterizing part of the patent claim.

En utførelse av oppfinnelsen beskrives i det etterføl-gende på grunnlag av tegningen som skjematisk viser et energi-forsørgingssystem ifølge oppfinnelsen for et tankskip for flytende gass. An embodiment of the invention is described below on the basis of the drawing which schematically shows an energy supply system according to the invention for a liquid gas tanker.

Energiforsørgingssystemet for gasstankere med flytende gass har en dieselmotor 10, en dampkjel 11 for varmeopptak, The energy supply system for liquefied gas tankers has a diesel engine 10, a steam boiler 11 for heat absorption,

et flytendegjøringsanlegg 12, et dampturbin-generatoraggregat 13-14 for et elektrisk nett 15 ombord, og et motor-generatoraggregat 16-17 for flytendegjøringsanlegget 12. For de mange tanker for flytende gass ombord på skipet er kun en tank 18 inntegnet. a liquefaction plant 12, a steam turbine-generator unit 13-14 for an electrical network 15 on board, and a motor-generator unit 16-17 for the liquefaction plant 12. For the many tanks for liquefied gas on board the ship, only one tank 18 is registered.

Dieselmotoren 10 driver en propeller 19 for gasstank-erens fremdrift. Dieselmotorens 10 varme forbrenningsgass tilføres via en ledning 20 dampkjelen 11 som fremstiller dam-pen for dampturbin-generatoraggregatet 13-14. Aggregatets 13-14 dampturbin 13 er en totrykks turbin med en tilførsel for kjelens 11 damp via en ledning 21 og en tilførsel via en ledning 22. Dampturbinens 13 damputtak kondenseres i en kondensator 23 med sjøvannskjøling. Kondensvannet føres via en ledning 24 til kjelen 11. Som kjølevann for kondensatoren 23 benyttes sjøvann som pumpes fra en pumpe 25 gjennom kondensatoren og tilbake til sjøen 26. The diesel engine 10 drives a propeller 19 for the gas tank's propulsion. The hot combustion gas of the diesel engine 10 is supplied via a line 20 to the steam boiler 11 which produces steam for the steam turbine generator set 13-14. The unit's 13-14 steam turbine 13 is a two-pressure turbine with a supply for boiler 11 steam via a line 21 and a supply via a line 22. The steam turbine 13's steam outlet is condensed in a condenser 23 with seawater cooling. The condensed water is led via a line 24 to the boiler 11. As cooling water for the condenser 23, seawater is used which is pumped from a pump 25 through the condenser and back to the sea 26.

Aggregatets 13-14 generator 14 forsørger det elektriske nett 15 ombord via en hovedbryter 30, en nettbryter 31 og minst én transformator 32. The unit's 13-14 generator 14 supplies the electrical network 15 on board via a main switch 30, a mains switch 31 and at least one transformer 32.

Generatoren i motor-generatoraggregatet 16-17, som kan være et dieselmotor-genereatoraggregat, leverer den elektriske energi for flytendegjøringsanlegget 12. En kompressor 33 i flytendegjøringsanlegget 12 suger den ved varmepåvirkning fordampede gass fra lagertankene 18 via en ledning 3 4 og kom-primerer denne slik at den på kjent måte flytendegjøres og som gass igjen tilføres lagertankene via en ledning 35. Kom-pressoren 33 drives av en elektromotor 36 som via en hovedbryter 37 og en motorbryter 38 tilføres energi fra motoraggre-gatets 16-17 generator 17. Forbrenningsgassen for motorgene-ratoraggregatets 16-17 dieselmotor 16 tilføres kjelen 11 via en ledning 39 som også utnytter denne varme til dampefrem-stilling. Istedenfor en dieselmotor kan aggregatet 16-17 ha en annen drivanordning som er egnet for flytende eller gass-formet drivstoff. Drivanordningen kan også være en gasstur-bin . The generator in the engine-generator unit 16-17, which can be a diesel engine-generator unit, supplies the electrical energy for the liquefaction plant 12. A compressor 33 in the liquefaction plant 12 sucks the gas vaporized by heat from the storage tanks 18 via a line 3 4 and compresses this so that it is liquefied in a known manner and again supplied as gas to the storage tanks via a line 35. The compressor 33 is driven by an electric motor 36 which, via a main switch 37 and a motor switch 38, is supplied with energy from the generator 17 of the engine assembly 16-17. The combustion gas for the diesel engine 16 of the motor generator unit 16-17 is supplied to the boiler 11 via a line 39 which also utilizes this heat for steam production. Instead of a diesel engine, the aggregate 16-17 can have another drive device which is suitable for liquid or gaseous fuel. The drive device can also be a gas turbine bin.

Kjelen 11 har en ekstra fyringsanordning 40 som tilføres fordampet gass fra lagertankene 18 via en ledning 41 med en ventil 42 og en pumpe 43. Den ekstra fyringsanordning kan også være tilordnet en eller flere separate damp-kjeler . The boiler 11 has an additional firing device 40 which is supplied with vaporized gas from the storage tanks 18 via a line 41 with a valve 42 and a pump 43. The additional firing device can also be assigned to one or more separate steam boilers.

Kjelen med ekstra fyringsanordning 40 og også dampturbin-generatoraggregatet 13-14 er dimensjonert for det fulle effektforbruk for både det elektriske nett 15 ombord og flytendegjøringsanlegget 12. Tilleggsforbrenningsanordningen er i seg selv dimensjonert så stor at også denne kan forbrenne den maksimalt mulige dampmengde som oppstår i lagringstankene . The boiler with additional firing device 40 and also the steam turbine-generator unit 13-14 are dimensioned for the full power consumption for both the electrical network 15 on board and the liquefaction plant 12. The additional combustion device itself is dimensioned so large that this too can burn the maximum possible amount of steam that occurs in the storage tanks.

Energiforsørgingssystemet virker som følger. The energy supply system works as follows.

Ved normal drift ombord på tankskipet leveres energien for flytendegjøring av den damp som oppstår i lagringstankene fra motor-generatoraggregatet 16-17. Hovedbryteren 37 og motorbryteren 38 er herved lukket. Hovedbryteren 30 og nettbryteren 31 er likeledes lukket slik at det elektriske nett 15 ombord mates fra dampturbrin-generatoraggregatets 13-14 generator 14. Da en bryter 45 er åpen, er driften av flytendegjøringsanlegget 12 og det elektriske nett 15 ombord adskilt fra hverandre. During normal operation on board the tanker, the energy for liquefaction of the steam that occurs in the storage tanks is supplied from the engine-generator unit 16-17. The main switch 37 and the motor switch 38 are thereby closed. The main switch 30 and the mains switch 31 are likewise closed so that the electrical network 15 on board is fed from the generator 14 of the steam turbine generator set 13-14. When a switch 45 is open, the operation of the liquefaction plant 12 and the electrical network 15 on board are separated from each other.

Oppstår en forstyrrelse i motor-generatoraggregatet 16-17 slik at flytendegjøringsanlegget 12 faller ut på grunn av manglende energitilførsel, åpnes hovedbryteren 3 7 og bry-teren 45 lukkes slik at dampturbin-generatoraggregatet 13-14 nå tilfører elektrisk energi både til det elektriske nett 15 ombord og flytendegjøringsanlegget. Herved åpnes ventilen 42 delvis slik at en del av den damp som oppstår i lagringstankene 18 tilføres tilleggsfyringsanordningen 40 i kjelen 11 via pumpen 4 3 og det således utvikles en større dampmengde for å kunne dekke dampturbin-generatoraggregatets 13-14 større dampforbruk. If a disturbance occurs in the motor-generator unit 16-17 so that the liquefaction plant 12 fails due to a lack of energy supply, the main switch 37 is opened and the switch 45 is closed so that the steam turbine-generator unit 13-14 now supplies electrical energy both to the electrical network 15 on board and the liquefaction plant. Hereby, the valve 42 is partially opened so that part of the steam that occurs in the storage tanks 18 is supplied to the additional firing device 40 in the boiler 11 via the pump 4 3 and a larger amount of steam is thus developed to be able to cover the larger steam consumption of the steam turbine-generator unit 13-14.

Dersom begge aggregater 13-14 og 16-17 faller ut på grunn av havari slik at det for flytendegjøringen av den fordampede gass ikke er elektrisk energi til rådighet, åpnes ventilen 42 helt og all den damp som oppstår i lagringstankene 18 forbrennes i tilleggsforbrenningsanordningen 40. En treveisventil 52 i damptilførselsledningen 21 vendes herved mot en ledning 53 til kondensatoren 23 slik at hele den dampmengde som oppstår i kjelen 11 tilføres kondensatoren og kondenseres her. En annen mulighet består i at hele den damp som utvikles blåses direkte ned i sjøvannet 26 via treveis-ventilen 52 og en ledning 54. If both aggregates 13-14 and 16-17 fail due to a breakdown so that there is no electrical energy available for the liquefaction of the vaporized gas, the valve 42 is opened completely and all the steam that occurs in the storage tanks 18 is burned in the additional combustion device 40. A three-way valve 52 in the steam supply line 21 is thereby turned towards a line 53 to the condenser 23 so that the entire quantity of steam that occurs in the boiler 11 is supplied to the condenser and condensed here. Another possibility is that all the steam that is developed is blown directly into the seawater 26 via the three-way valve 52 and a line 54.

Claims (6)

1. Energiforsørgingssystem for tankskip for flytende gass med dieselmotordrift, med et flytendegjøringsanlegg for den gass som oppstår i lagertankene og som drives av et motorgenertoraggregat, en dampkjel for den varmemengde som fjernes for utnyttelse av denne varmemengde og videre med et dampturbin-generatoraggregat for fremstilling av elektrisk energi for det elektriske nett ombord, karakterisert ved at dampkjelen (11) har en tilleggs-forbrenningsanordning (40) for forbrenning av den fordampede gass, at dampturbin-generatoraggregatet (13, 14) og dampkjelen (11) med tilleggsforbrenningsanordningen (40) er dimensjonert både for energitilførselen til flytendegjøringsanleg-get (12) og for det elektriske nett (15) ombord, og at dampkjelen (4) med tilleggsforbrenningsanordningen (40) er dimensjonert for utnyttelse av den maksimalt mulige mengde gass som kan fordampes i lagertankene.1. Energy supply system for tankers for liquefied gas with diesel engine operation, with a liquefaction plant for the gas that occurs in the storage tanks and which is driven by a motor-generator unit, a steam boiler for the amount of heat that is removed for utilization of this amount of heat and further with a steam turbine-generator unit for the production of electrical energy for the electrical network on board, characterized in that the steam boiler (11) has an additional combustion device (40) for burning the vaporized gas, that the steam turbine generator unit (13, 14) and the steam boiler (11) with the additional combustion device (40) are dimensioned both for the energy supply to the liquefaction plant (12) and for the electrical network (15) on board, and that the steam boiler (4) with the additional combustion device (40) is dimensioned to utilize the maximum possible amount of gas that can be evaporated in the storage tanks. 2. System ifølge krav 1, karakterisert ved at minst en separat dampkjel er tilordnet tilleggsforbrenningsanordningen (40).2. System according to claim 1, characterized in that at least one separate steam boiler is assigned to the additional combustion device (40). 3. System ifølge krav 1-2, karakterisert ved at dampledningen (21) mellom dampkjelen (11) og dampturbin-generatoraggregatet (13, 14) har en treveis ventil (52) for å forbinde dampledningen (21) med dampkjelens kondensator (23) .3. System according to claims 1-2, characterized in that the steam line (21) between the steam boiler (11) and the steam turbine-generator assembly (13, 14) has a three-way valve (52) to connect the steam line (21) with the steam boiler's condenser (23). 4. System ifølge krav 1-2, karakterisert ved at dampledningen (21) har en treveis ventil (52) mellom dampkjelen (11) og dampturbin-generatoraggregatet (13, 14), for å forbinde dampledningen med en tømmeledning (54) som fører til sjøvannet.4. System according to claims 1-2, characterized in that the steam line (21) has a three-way valve (52) between the steam boiler (11) and the steam turbine-generator assembly (13, 14), to connect the steam line with a discharge line (54) leading to the sea water. 5. System ifølge krav 1-4, karakterisert ved at dampturbin-generatoraggregatets dampturbin (13) er en totrykks turbin.5. System according to claims 1-4, characterized in that the steam turbine-generator unit's steam turbine (13) is a two-pressure turbine. 6. System ifølge krav 1-5, karakterisert ved at det har brytere (45) for tilkobling av energitilfør-sel til flytendegjøringsanlegget (12) fra dampturbin-generatoraggregatet (13, 14).6. System according to claims 1-5, characterized in that it has switches (45) for connecting energy supply to the liquefaction plant (12) from the steam turbine generator unit (13, 14).
NO833628A 1982-10-06 1983-10-05 ENERGY SUPPLY SYSTEM FOR TANKER FOR LIQUID GAS. NO155304C (en)

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SE464716B (en) * 1987-02-25 1991-06-03 Project Promotion Services KRAFTVAERMEANLAEGGNING
HRP930190B1 (en) * 1993-02-16 1998-04-30 Ilija Biland Ija Transferable electric plant for specific purposes
DE10008721A1 (en) * 2000-02-24 2001-08-30 Siemens Ag Gas and steam turbine drive for a ship
GB0120661D0 (en) * 2001-08-24 2001-10-17 Cryostar France Sa Natural gas supply apparatus
DE102004005305A1 (en) * 2004-02-03 2005-08-11 Linde Ag Process for reliquefying a gas
KR100812723B1 (en) 2006-12-18 2008-03-12 삼성중공업 주식회사 Fuel supply apparatus of liquefied gas carrier and the method thereof
DE102008061192A1 (en) * 2008-12-09 2010-06-17 Man Diesel Se Gas supply system for drives of liquefied gas carrier, has gas line system, over which natural gas evaporating in liquefied gas tank of liquefied gas carrier is promoted
ITMI20090039A1 (en) * 2009-01-19 2010-07-20 Franco Finocchiaro PROCEDURE AND SYSTEM FOR THE GENERATION OF USING ENERGY LIQUID AND OR GASEOUS HEAT SOURCES ON BOARD OF NAVAL UNITS
WO2010116230A2 (en) 2009-04-09 2010-10-14 Ocean Synergy Limited Deep ocean energy system with full or partial sea water air conditioning and utility waste heat utilization
JP5496006B2 (en) * 2010-08-02 2014-05-21 三菱重工業株式会社 Power plant equipment and operation method thereof
CN103608091B (en) * 2011-01-20 2016-08-31 沙特阿拉伯石油公司 Utilize the vehicle-mounted recovery of used heat and store the CO from internal combustion engine of motor vehicle waste gas2direct densifying method and system
DE102011083986A1 (en) * 2011-10-04 2013-04-04 Siemens Aktiengesellschaft Ship with a drive with waste heat recovery
WO2016038727A1 (en) * 2014-09-11 2016-03-17 株式会社マリタイムイノベーションジャパン Marine heat supply system
JP7301553B2 (en) * 2019-02-26 2023-07-03 三菱重工マリンマシナリ株式会社 Liquefied gas vaporizer and floating facility equipped with the same

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NO800935L (en) * 1980-03-31 1981-10-01 Moss Rosenberg Verft As LNG SHIP PROGRAMMING MACHINE.

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NO833628L (en) 1984-04-09
DE3245865C2 (en) 1984-07-12
JPS59100083A (en) 1984-06-09
DE3245865A1 (en) 1984-04-12
NO155304C (en) 1987-03-11
JPS6358479B2 (en) 1988-11-16

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