23 results about "Regasification" patented technology

A coupling system for liquefied natural gas re-gasification and liquid air energy storage. The coupling system comprises a liquefied natural gas re-gasification system and a liquid air energy storage system. The liquefied natural gas re-gasification system comprises: a heat exchanger-natural gas (HX-NG) connected to a liquefied natural gas re-gasification path. The liquid air energy storage system comprises: a heat exchanger-charge (HX-C) connected to a main gas liquefaction path, a heat exchanger-discharge (HX-DC) connected to a liquefied main gas re-gasification path, and a cold dewar (CD), wherein a first heat exchange cycle where cold energy exchange is performed with a first heat exchange medium is formed between the heat exchanger-natural gas and the heat exchanger-charge; and a second heat exchange cycle where cold energy exchange is performed with a second heat exchange medium is formed among the heat exchanger-charge, the cold dewar and the heat exchanger-discharge. In the first heat exchange cycle, a hot end of the heat exchanger-natural gas is connected to a hot end of the heat exchanger-charge, and a cold end of the heat exchanger-natural gas is connected to a cold end of the heat exchanger-charge; and in the second heat exchange cycle, hot ends of the heat exchanger-charge, the cold dewar and the heat exchanger-discharge are connected, and cold ends of the heat exchanger-charge, the cold dewar and the heat exchanger-discharge are connected. In the present invention, regardless of whether the liquid air energy storage system is in a charging working state, a standing working state or a discharging working state, effective coupling utilization of cold energy and heat energy between the liquid air energy storage system and the liquefied natural gas re-gasification system can be realized, improving the effective coupling utilization rate of cold energy and heat energy between the systems.

The present invention discloses a process and a terminal Liquefied Natural Gas (LNG) export and import terminals and LNG Dispensing stations. There is a disclosed use of impellers, shell and tube condenser, natural regas driven ejector to compress BOG (Boil-off Gas) and single stage BOG (Boil-off Gas) compressor.

A device for regasification of LNG, and cogeneration of fresh water and dry air, having a casing hermetically sealed from the exterior withstanding vacuum conditions, and containing a working fluid in its liquid and gaseous phases; the casing is traversed by t a cryogenic tube through which LNG is fed and regasified natural gas is collected via the other end. The external surface of the cryogenic tube condenses the gaseous working fluid, releasing energy, and evaporative condenser tubes located outside the casing, with the external condensing surface in contact with damp air, and the air vapor contained in the damp air condenses thereupon, generating cold fresh water and releasing energy to the working fluid in its liquid phase which flows through the evaporative condenser and which evaporates, generating a gaseous phase working fluid, which exits through the evaporative condenser and is directed into the casing for the condensation

The present invention relates to a technology for liquefying natural gas, which is subsequently transported by rivers and oceans and ultimately regasified. Pretreated natural gas is compressed by a compressor 1, the heat of compression is removed in an air or water cooler 2, and multi-stage pre-cooling is subsequently performed by evaporating a heavy refrigerant in an evaporator 3. The light refrigerant vapor and its pre-evaporation cold are recovered in a shell-and-tube heat exchanger 7, where the pressure of the gas to be liquefied is reduced by a pressure reducer 10, unliquefied gas is separated, and liquefied natural gas is discharged. The heavy refrigerant obtained by evaporation is compressed by a compressor 4, condensed in an air or water cooler 5, and reused in the multi-stage pre-cooling of natural gas. A light refrigerant is compressed by at least two compressors 11, the heat of compression is removed in an air or water cooler 12, and then passes through continuous cooling by a low-pressure light refrigerant in a double-flow superheater 12 and an evaporating heavy refrigerant in an evaporator 3. The high-pressure light refrigerant is then split into two streams. The first stream is expanded through an isentropic process in an expander 14. The second stream passes through continuous cooling in a shell-and-tube heat exchanger 7, then expanded through an isenthalpic process in a throttle valve 15, and evaporated by subcooling natural gas in an evaporator 8. The streams are then mixed at equal pressure and used as a single stream of low-pressure light refrigerant to cool the second stream of light refrigerant before expansion and evaporation in the isenthalpic process with natural gas in the shell-and-tube heat exchanger 7, and to cool a single stream of high-pressure light refrigerant in a double-flow superheater 13. The present invention provides stronger cooling of the natural gas, reduces the amount of boil-off gas and the work required for its recompression and recycling, and provides a simpler hardware design for the heat exchanger.

A floating regasification system for liquefied natural gas (LNG) comprises a floating structure having an upper installation surface, at least one regasification module attached to the upper installation surface, a first fluid transfer assembly in fluid communication with an input side of the at least one regasification module, and a second fluid transfer assembly in fluid communication with an output side of the at least one regasification module, wherein the at least one regasification module is configured to receive LNG through the first fluid transfer assembly, to vaporize the LNG to generate a gas, and to deliver the gas into the second fluid transfer assembly, and wherein each of the fluid transfer assemblies has at least one flexible hose for transferring LNG to the at least one regasification module or gas to an onshore consumer, respectively.

The invention comprises a coupled data center cooling / liquid natural gas (LNG) regasification heating apparatus, such as an apparatus configured to cool a data center, comprising: a heat transfer fluid pipe configured to hold a heat transfer fluid, the heat transfer fluid configured to transfer a heat from the data center to a liquefied natural gas; and a phase change container, such as positioned on a fuel transport vehicle, configured to hold a portion of the liquefied natural gas during a phase change of the liquefied natural gas to a gas phase natural gas, the phase change container further comprising a heat exchanger configured to transfer from the heat transfer fluid at least thirty percent of an enthalpy of vaporization energy used in a phase change of the liquefied natural gas into a gas phase natural gas.

LNG cold energy can be recovered from the regasification process by using ice slurry. Ice slurry is used as a cold energy storage medium and heat transfer fluid. Currently, LNG at −162° C. is vaporized to city gas in heat exchange with sea water and the chilled sea water is disposed of into the sea. The cold energy recovered in a form of ice slurry at temperature of −45° C. is used for freeze and refrigeration warehouses, cooling data centers and HVAC of commercial buildings, cold energy industries, and CO2 liquefaction for CCUS. Ice slurry is produced in large capacities required for the LNG regasification process by direct contact heat transfer in the water layer with cold light solvent bubbles which are generated by the distributor nozzles being submerged in the heavy solvent layer. Toluene is used as the light solvent liquid and perfluorohexane or perfluoroheptane as the heavy solvent.

The present invention relates to the technical field of large-scale energy storage. Disclosed are a coupling system and a coupling method for LNG-RG and LAES. The coupling system comprises: an LAES subsystem, an LNG-RG subsystem, and a coupling cold exchange subsystem; in an LAES subsystem charging operating state, ambient air is sequentially compressed by a normal-temperature compressor, the compression heat energy being output to a heat storage tank for storage, then cooled to a deep cryogenic temperature by the coupling cold exchange subsystem, compressed and heated to a shallow cryogenic temperature by a first-stage low-temperature compressor, and cooled to a deep cryogenic temperature by the coupling cold exchange subsystem, so as to enter a next-stage low-temperature compressor; the deep cryogenic temperature is the pressurized outlet temperature in the regasification process of liquefied natural gas, and the shallow cryogenic temperature is the outlet temperature of ambient air after low-temperature compression of the ambient air. The present invention establishes unified management of cold energy of the coupling cold exchange subsystem between the LAES subsystem and the LNG-RG subsystem, and by means of the two temperature compression modes of normal-temperature compression and multi-stage low-temperature compression, uses high-grade cold energy of the LNG-RG subsystem to directly reduce the temperature of the ambient air before entering the low-temperature compressor to the deep cryogenic temperature, thereby reducing power consumption of the air compression process of the LAES subsystem, and further improving the charging and discharging efficiency of the entire LAES subsystem.

A wind curtailment absorption type offshore green chemical product preparation system utilizes a green chemical product preparation facility for fully absorbing wind power in various modes, sets a plurality of wind power absorption paths, and increases various wind power absorption hydrogen production and storage ways compared with a traditional hydrogen production green chemical product process route. And the total investment of the whole facility is well controlled. In order to cope with the absorptive capacity of abandoned wind under different strength grades, except for hydrogen production equipment needing to be configured under the conventional standard working condition, wind power absorptive hydrogen production equipment, a high-pressure hydrogen compressor unit, a high-pressure gaseous hydrogen storage tank, hydrogen liquefaction equipment, a liquid hydrogen storage tank, a liquid hydrogen regasification device and the like are additionally configured. The storage difficulty degree and the preparation energy consumption degree of hydrogen in a gas state or a liquid state are utilized to deal with the strength of wind curtailment so as to fully absorb the hydrogen. According to the invention, wind power resources of the wind field can be fully consumed, and wind curtailment is avoided.

The disclosure relates to a regasification system for liquified gas, including a liquefied gas feed stream (130), at least one booster pump (110) for pressurizing the liquefied gas stream (130) to a first pressurized liquefied gas stream (132), and a second pressurized liquefied gas stream (134) to be passed through at least one vaporizer system (114) to produce a vaporized gas stream (136) by regasification of the second pressurized liquefied gas stream (134), wherein the system comprises at least one expander (116) for receiving and expanding a portion of the vaporized gas stream (136) as a return portion vaporized gas stream (138) to produce an expanded gas stream (142), a heat exchanger (112) for heat exchanging between the first pressurized 10 liquefied gas stream (132) and the expanded gas stream (142) to provide a condensed gas stream (144), and returning the condensed gas stream (144) into the liquefied gas feed stream (130).

A floating gas plant can include a deck that may be reinforced. A topside unit can be positioned on the deck. The topside units may be one or more of: a processing unit, or a liquefaction unit, or a regasification unit, or a compression unit, or an injection unit, or a utility unit, or any combination thereof. The plant can also include a storage tank for storing the liquified gas, where the storage tank is positioned below the deck. A pump tower can be disposed in the storage tank, such that a portion of the pump tower protrudes through a surface level of the deck. The pump tower can be coupled to the deck for stability. Coupling the pump tower to the deck for stability can allow the pump tower to be positioned in any suitable location in the storage tank.

The application discloses a LNG-RG and LAES coupling system and a coupling method, and relates to the technical field of large-scale energy storage. The coupling system comprises an LAES subsystem, a LNG-RG subsystem and a coupling cooling subsystem; in the charging working condition of the LAES subsystem, ambient air is compressed by a normal-temperature compressor in sequence and outputs compressed heat energy to a heat storage tank for storage, is cooled to a deep cooling temperature by the coupling cooling subsystem, is compressed to a shallow cooling temperature by a first-stage low-temperature compressor, is cooled to the deep cooling temperature by the coupling cooling subsystem and enters a next-stage low-temperature compressor; wherein the deep cooling temperature is a pressurized outlet temperature in the liquefied natural gas regasification process, and the shallow cooling temperature is an outlet temperature of ambient air after low-temperature compression. The application establishes the coupling cooling subsystem between the LAES subsystem and the LNG-RG subsystem to uniformly manage cold energy, adopts a double-temperature compression mode of normal-temperature compression and multi-stage low-temperature compression, utilizes high-grade cold energy of the LNG-RG subsystem, directly reduces the temperature of ambient air before entering the low-temperature compressor to the deep cooling temperature, thereby the consumption power of the air compression process of the LAES subsystem can be reduced, and the charging and discharging efficiency of the whole LAES subsystem is improved.

A coupling system for liquefied natural gas re-gasification (LNG-RG) and liquid air energy storage (LAES). The coupling system comprises an LNG-RG system and an LAES system. The LNG-RG system comprises a heat exchanger-natural gas, and a liquefied natural gas re-gasification path passes through the heat exchanger-natural gas. The LAES system comprises a cold dewar, and a main gas liquefaction path and a liquefied main gas re-gasification path pass through the cold dewar, wherein in the cold dewar, the main gas liquefaction path and the liquefied main gas re-gasification path are the same path but have opposite air flow directions; and the cold dewar performs cold energy exchange with the main gas liquefaction path and the liquefied main gas re-gasification path by means of a cold storage medium in the cold dewar. A hot end of the heat exchanger-natural gas is connected to a hot end of the cold dewar, and a cold end of the heat exchanger-natural gas is connected to a cold end of the cold dewar, thereby forming a heat exchange cycle where cold energy exchange is performed with a heat exchange medium. In the system, regardless of whether the LAES system is in a charging working situation, a standing working situation or a discharging working situation, effective coupling utilization of cold energy and heat energy between the LAES system and the LNG-RG system can be realized, the coupling system is improved, the effective coupling utilization rate of cold energy and heat energy between the systems is improved, and the output requirements for the LNG-RG system and the LAES system are met in multiple working situations.

The invention comprises a coupled data center cooling / liquid natural gas (LNG) regasification heating apparatus, such as an apparatus configured to remove heat generated in a data center by a processing unit, comprising: a heat exchanger, the heat exchanger comprising: an input connector connected to a supply of a liquefied natural gas (LNG); a phase change chamber, wherein a gas phase natural gas (NG) forms from the liquefied natural gas in a phase change; and an output connector connected to an output pipe configured to move the gas phase natural gas out of the phase change chamber, the heat exchanger configured to move at least thirty percent of an energy required in the phase change from the data center to the liquefied natural gas.

The application discloses a kind of LNG re-gasification ship booster pump's real ship hoisting method, hoist FSRU re-gasification ship booster pump using crane, method includes the following steps: adjusting ballast water, inspection balance;Confirm hoisting trajectory to coincide with the top and bottom of pump well line;Adjust the center of gravity of gourd sling and the center of object coincide;Slowly hoist booster pump with 1# crane to make it enter pump well;Tighten the bolt and nut of top plate and seat table connection.The application has achieved the following beneficial effects through practical application: (1) the tooling tool is less, and the booster pump is hoisted easily;(2) strong, can hoist the equipment with precision surface for the first contact surface during hoisting;(3) lower than traditional hoisting cost.

This invention relates to a method or system for regasifying liquefied petroleum gas (LPG) on ships. To enable LPG regasification, certain operating conditions are maintained at key points in the circulation of the heat transfer medium that exchanges heat with the LPG, thereby ensuring stable operation of the circulation. The method for regasifying LPG on ships according to this invention includes: vaporizing a first liquid heat transfer medium that has condensed after heat exchange in a first heat exchanger; supplying the vaporized first heat transfer medium to an expansion generator for expansion to generate electricity; supplying the expanded first heat transfer medium to the expansion generator; and controlling the pressure at the rear end of the expansion generator by controlling the pressure at the front or rear end of the expansion generator.

A floating electrical energy generation plant is disclosed. The floating electrical energy generation plant can include a floatable vessel. The floating electrical energy generation plant may include onboard storage for liquefied natural gas, and a regasification unit for regasifying the liquefied natural gas to facilitate combustion in at least one gas turbine generator of an onboard power generator. The floating electrical energy generation plant can further include an onboard carbon capture system to capture carbon dioxide present in exhaust gases from the onboard power generator, liquefy, and store the liquefied natural gas in one or more onboard storage tanks. Steam from operation of the onboard power generator can be used as heat source for a regeneration column of the carbon capture system, and the coldness of the liquefied natural gas may be utilized to help liquefy the captured carbon dioxide.

This invention relates to the field of intelligent scheduling technology for FSRU heat sources, specifically disclosing a method for scheduling FSRU regasification hybrid heat sources based on load forecasting and rule learning. The method includes: collecting basic operational data of the FSRU, marine environmental data, and coupled correlation data, and performing data cleaning and standardization preprocessing; inputting the preprocessed data into a three-dimensional coupled load forecasting model; dynamically switching the network structure complexity of the model based on real-time collected marine environmental parameters; and outputting the load forecast value and deviation probability. This invention, by constructing a three-dimensional coupled environment-load-equipment model and introducing a dynamic switching mechanism, can intelligently select simplified or complex network structures according to real-time sea conditions, significantly improving the prediction accuracy for nonlinear environmental impacts while ensuring computational efficiency.

This invention relates to the technical field of LNG carriers and floating storage and regasification units (FSRUs), particularly to a multi-functional steam system for LNGC-FSRUs. The system includes an atmospheric venting chamber, a low-pressure steam user, and a regasification desuperheating and depressurization station. The outlet of the atmospheric venting chamber is connected via water pipes to a first-stage water supply heater, auxiliary boilers No. 1, No. 2, and No. 3. The inlet of the first-stage water supply heater is connected to a main condenser and an auxiliary condenser, and the outlet of the first-stage water supply heater is connected to a second-stage water supply heater. This multi-functional steam system not only meets the propulsion, power generation, and heating needs of conventional ships during navigation, but also, after desuperheating and depressurization, is used to heat ethylene glycol, meeting the heat requirements for closed-loop or mixed LNG regasification heating. Furthermore, the supplementary use of the waste gas boiler solves the demand for low-load steam in open regasification mode, reducing energy consumption, protecting the environment, and simplifying ship operation.

The invention comprises a coupled data center cooling / liquid natural gas (LNG) regasification heating and cooling apparatus and method of use thereof. For example, a method is described for cooling a data center, comprising the steps of: (1) transferring heat from the data center to a liquid phase combustible refrigerant and (2) phase changing the liquid phase combustible refrigerant, carried by the trailer, to a gas phase combustible refrigerant, at least fifty percent of an enthalpy of vaporization energy used in the step of phase changing transferred to the gas phase combustible refrigerant in the step of transferring, the gas phase combustible refrigerant comprising an energy density of greater than 10,000 kJ / kg. Optionally, the step of phase changing boils a liquefied natural gas (LNG), carried by the trailer, to a gas phase natural gas (NG).

A regasification system includes a first cooling apparatus in flow communication with a liquid natural gas conduit for receiving liquid natural gas (LNG), and a second cooling apparatus in flow communication and downstream from the first cooling apparatus. The second cooling apparatus is in flow communication with a cooling assembly including cooling water. The cooling assembly facilitates cooling a carbon dioxide stream flowing through a compression train of a carbon capture system included in a combined cycle power plant. The regasification system also includes a heat exchanger in flow communication and downstream from the second cooling apparatus. The heat exchanger is in flow communication with a combustor of a gas turbine assembly for the combined cycle power plant.

A regasification facility, regasification systems and methods for import, offloading and regasification of liquid natural gas from liquid natural gas carriers is provided. The regasification facility is configured to provide increased flexibility in the construction so as to enable substantial reductions in construction times and costs of the construction of the regasification facility to be constructed and brought into operation, and to be further scaled up quickly and efficiently versus traditionally constructed and operated land based regasification plants and / or floating storage and regasification units.