KR20190008793A - Gas Regasification System and Vessel having the same - Google Patents

Abstract

According to an embodiment of the present invention, a gas regasification system comprises: a liquefied gas storage tank storing liquefied gas or boil-off gas; a gas turbine generator generating electricity with the liquefied gas or the boil-off gas as fuel; a gas combustion device burning the boil-off gas; a heat recovery device generating a heat medium by being supplied with exhaust gas discharged from at least one of the gas turbine generator and the gas combustion device; and a regasification device regasifying the liquefied gas stored in the liquefied gas storage tank. The regasification device is operated by being supplied with the electricity generated in the gas turbine generator, and the liquefied gas is regasified through the heat medium supplied from the heat recovery device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas regasification system and a vessel including the same,

The present invention relates to a gas regeneration system and a vessel including the same.

Generally, it is known that LNG is a clean fuel and its reserves are more abundant than petroleum, and its usage is rapidly increasing as mining and transfer technology develops. This LNG is generally stored in a liquid state at a temperature of -162 ° C. or less under 1 atm of the main component. The volume of liquefied methane is about 1/600 of the volume of methane in a gaseous state in a standard state, Is 0.42, which is about one half of the specific gravity of crude oil.

LNG is liquefied with ease of transportation and used after vaporizing at the place of use after transportation. However, due to the risk of natural disasters and terrorism, it is feared to install LNG vaporization equipment onshore.

As a result, in place of the conventional liquefied natural gas regeneration system installed on the land, a system for supplying natural gas that is vaporized on the land by installing a regeneration device on an LNG carrier carrying the liquefied natural gas (FSRU) is in the limelight.

The LNG stored in the liquefied gas storage tank in the gas regeneration unit is pressurized by the booster pump and sent to the LNG vaporizer, which is vaporized by the LNG vaporizer and sent to the onshore demand site. These gas regenerators require a lot of power and energy, and require high system drive reliability to enable continuous system operation.

Therefore, various researches have been carried out to enable efficient use of power and energy used in the process and to enable continuous operation of the system.

It is an object of the present invention to provide a gas regeneration system capable of improving maintenance reliability and driving reliability of a regeneration system and a ship having the same will be.

A gas regeneration system according to an embodiment of the present invention includes a liquefied gas storage tank for storing a liquefied gas or an evaporated gas; A gas turbine generator for generating electricity using the liquefied gas or the evaporated gas as fuel; A gas combustion device for combusting the evaporation gas; An arrangement recovery device for receiving exhaust gas discharged from at least one of the gas turbine generator and the gas combustion device to generate a heating medium; And a regeneration device for regenerating the liquefied gas stored in the liquefied gas storage tank, wherein the regeneration device operates in response to the power generated from the gas turbine generator, And the liquefied gas is regenerated through the exhaust pipe.

Specifically, the regeneration device includes: a feeding pump that supplies liquefied gas stored in the liquefied gas storage tank to a customer; A boosting pump for supplying and pressurizing the liquefied gas from the feeding pump; And a vaporizer that receives the pressurized liquefied gas from the boosting pump and heat-exchanges the pressurized liquefied gas with the vaporized heat medium to regenerate the vaporized heat medium, wherein the vaporized heat medium is supplied with heat from the heat medium supplied from the heat collecting apparatus.

Specifically, the vaporization heat medium may be seawater.

Specifically, the vaporizer includes a heat medium circulation line through which the vaporization heat medium circulates; A heating medium pump provided on the heating medium circulation line for circulating the vaporizing heat medium; A heat medium heat exchanger provided on the heat medium circulation line for transferring heat to the vaporization heat medium by exchanging heat between the vaporization heat medium and the heat medium heating medium; And an additional heat medium heat exchanger for exchanging heat between the heat supply heating medium and the heat medium supplied from the exhaust heat recovery heat exchanger, wherein the vaporization heat medium is heat-exchanged with the heat supply heat medium having received heat supplied from the heat medium, .

Specifically, the vaporization heat medium is a glycol aqueous solution or propane, the heat supply heat medium is seawater, and the heat medium is steam.

Specifically, the steam turbine generator further includes a steam turbine generator for generating electric power through the heat medium supplied from the exhaust heat recovery apparatus. The regenerator may be operated by receiving power generated from the steam turbine generator.

Specifically, the steam turbine generator may supply surplus heat medium remaining in the heat medium supplied from the heat recovery apparatus to the additional heat medium heat exchanger.

Specifically, it may be a vessel characterized by including the gas regeneration system.

The gas regeneration system according to the present invention has an effect of reducing the maintenance time compared to the power generation engine (GE) by supplying electric power to the regeneration system through the arrangement recovery steam generator (HRSG) The driving reliability is extremely improved.

Further, it is possible to efficiently use the energy by supplying the heat source necessary for regeneration of the regenerator through the surplus steam remaining in the HRSG and the exhaust gas to be exhausted.

1 is a conceptual view of a ship having a gas regeneration system according to an embodiment of the present invention.
2 is a conceptual diagram of a gas regeneration system according to the first embodiment of the present invention.
3 is a conceptual diagram of a gas regeneration system according to a second embodiment of the present invention.
4 is a conceptual diagram of a gas regeneration system according to a third embodiment of the present invention.
5 is a conceptual diagram of a gas regeneration system according to a fourth embodiment of the present invention.
6 is a conceptual diagram of a gas regeneration system according to a fifth embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Herein, the liquefied gas may be used to encompass all of the gaseous fuels generally stored in a liquid state such as LNG or LPG, ethylene, ammonia, etc. Illustratively, it may refer to Liquefied Natural Gas (LNG) , And the case where the liquid is not in a state of being heated or pressurized can also be expressed as liquefied gas for convenience. This also applies to the evaporative gas.

In addition, LNG can be used to mean both NG (natural gas) and NG (supercritical state) for the sake of convenience. Boiling off gas (LNG) refers to natural vaporized LNG, As well as liquefied vaporized gas.

The liquefied gas can be referred to irrespective of the state change, such as liquid state, gas state, mixed state of liquid and gas, supercooled state, supercritical state, and the like. It is also apparent that the present invention is not limited to the liquefied gas to be treated, but may be a liquefied gas processing system and / or an evaporative gas processing system, and the systems of the respective drawings to be described below may be applied to each other.

In addition, each of the embodiments of the gas regeneration system 1 of the present invention can be combined with each other, and the addition of the respective components can be made to be an intersection with each other. The gas regeneration system 1 according to the embodiment of the present invention can be mounted on the hull 100. [

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a conceptual view of a ship having a gas regeneration system according to an embodiment of the present invention, and FIG. 2 is a conceptual diagram of a gas regeneration system according to the first embodiment of the present invention.

1 and 2, the gas regeneration system 1 according to the embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 21, a buffer tank 21a, a booster pump 22 A vaporizer 30, a customer 41, a power consuming place 42, a gas turbine 50, a gas combustion device 70, and an arrangement recovery device 80.

Here, the feeding pump 21, the buffer tank 21a, the booster pump 22, and the vaporizer 30 are provided in the regenerator accommodating unit 200 shown in FIG. 1, and the gas turbine 50, The exhaust gas recirculation device 70 and the exhaust gas recirculation device 80 may be provided in the exhaust gas recirculation device accommodating part 300 in the engine room ER shown in FIG.

The gas regeneration system 1 according to the embodiment of the present invention will now be described with reference to FIG.

Prior to describing the individual configurations of the gas regeneration system 1 according to the embodiment of the present invention, the basic flow paths for organically connecting the individual structures will be described. Here, the flow path may be a line through which the fluid flows, and each line may be provided with a control valve (not shown) for controlling the flow rate of the fluid. Do.

The embodiment of the present invention may further include a regeneration line L1, a heating medium circulation line L2, a seawater supply line L3, an additional heat source supply line L4, and a steam supply line L6. Valves (not shown), which are adjustable in opening degree, may be installed in each line, and the supply amount of the evaporation gas or liquefied gas may be controlled according to the opening degree of each valve.

The regeneration line L1 connects the liquefied gas storage tank 10 and the consumer 41 and has a feeding pump 21, a buffer tank 21a, a high-pressure pump 22 and a vaporizer 30, The liquefied gas stored in the liquefied gas storage tank 10 can be vaporized and supplied to the customer 41.

The heating medium circulation line L2 circulates a vaporizing heating medium (glycol aqueous solution or propane) to be supplied to the vaporizer 30 and may include a heating medium pump 31, a heating medium heat exchanger 32 and a vaporizer 30. [

The seawater supply line L3 may include a seawater pump SWP to supply seawater to the heat medium heat exchanger 32 and a heat medium heat exchanger 32. [

The additional heat source supply line L4 may be branched on the seawater supply line L3 and connected to the seawater supply line L3 again and may include the additional heat source first heat exchanger 33. [

The steam supply line L6 connects the exhaust heat recovery unit 80 and the additional heat source first heat exchanger 33 and supplies the steam discharged from the exhaust heat recovery unit 80 to the additional heat source first heat exchanger 33 Thereby supplying steam to the seawater as an additional heat source. The heat-exchanged steam in the additional heat source first heat exchanger (33) can be condensed and supplied to a separate condensate storage tank (not shown) and stored.

Hereinafter, the individual configurations of the gas regeneration system 1 which are organically formed by the above-described respective lines L1 to L4 and L6 will be described.

The liquefied gas storage tank 10 stores liquefied gas to be supplied to the customer 41, the gas turbine 50 or the gas combustion device 70. The liquefied gas storage tank 10 must store the liquefied gas in a liquid state, at which time the liquefied gas storage tank 10 may have the form of a pressure tank.

Here, the liquefied gas storage tank 10 is disposed inside the hull 100, and four liquefied gas storage tanks 10 may be formed in front of the engine room ER, for example. In addition, the liquefied gas storage tank 10 is not particularly limited to various types such as a membrane-type tank or an independent tank, for example.

The gas (liquefied gas or vaporized gas) stored in the liquefied gas storage tank 10 can be consumed by the gas turbine 50, the gas combustion device 70 and the like and supplied to the gas turbine 50 or the gas combustion device 70 A gas supply line (not shown), a compressor (not shown), a liquefied gas supply line (not shown), a liquefied gas pump (not shown), etc.) may be provided to supply the gas . At this time, the liquefied gas may be vaporized by the vaporizer 30 to be described later and supplied to the gas turbine 50 or the gas combustion device 70.

In the embodiment of the present invention, an oil storage tank (not shown) may be additionally provided. Oil storage tank stores oil. The oil may be MGO or the like, and may be a fluid having a liquid state even at room temperature. The type of oil is not particularly limited and may refer to all fluid fuels that are currently used in a variety of marine applications.

The oil stored in the oil storage tank may be consumed by the gas turbine 50, the gas combustion device 70 and the like and may be supplied to the gas turbine 50 or the gas combustion device 70 through an oil supply unit A line (not shown), an oil pump (not shown), etc.).

The feeding pump 21 is provided on the regeneration line L1 and is provided inside or outside the liquefied gas storage tank 10 to store the liquefied gas stored in the liquefied gas storage tank 10 into the buffer tank 21a Can supply.

Specifically, the feeding pump 21 is provided between the liquefied gas storage tank 10 and the buffer tank 21a on the regeneration line L1, and supplies the liquefied gas stored in the liquefied gas storage tank 10 to the primary pressurization To the buffer tank 21a.

The feeding pump 21 can pressurize the liquefied gas stored in the liquefied gas storage tank 10 to 6 to 8 bar and supply it to the buffer tank 21a. Here, the feeding pump 21 pressurizes the liquefied gas discharged from the liquefied gas storage tank 10 so that the pressure and the temperature may become somewhat higher, and the pressurized liquefied gas may still be in a liquid state.

In this case, the feeding pump 21 may be a submergible pump when it is provided inside the liquefied gas storage tank 10 and may be a pump that is stored in the liquefied gas storage tank 10 when it is installed outside the liquefied gas storage tank 10 May be provided at a position inside the hull 100 lower than the level of the liquefied gas and may be a centrifugal pump.

The buffer tank 21a is connected to the regeneration line L1 and can receive the liquefied gas from the liquefied gas storage tank 10 and temporarily store it.

Specifically, the buffer tank 21a can receive the liquefied gas stored in the liquefied gas storage tank 10 from the feeding pump 21 through the regeneration line L1, temporarily stores the supplied liquefied gas, The gas can be separated into a liquid phase and a vapor phase, and the separated liquid phase can be supplied to the boosting pump 22.

That is, the buffer tank 21a temporarily stores the liquefied gas to separate the liquid phase and the vapor phase, and then supplies the complete liquid phase to the boosting pump 22 so that the boosting pump 22 satisfies the effective suction head NPSH , Thereby preventing cavitation in the boosting pump (22).

Here, the buffer tank 21a may be formed in a pressure vessel type capable of withstanding pressure and can withstand 6 to 8 bar or 6 to 15 bar. The buffer tank 21a can supply the liquefied gas to the boosting pump 22 to lower the compression load of the boosting pump 22 while maintaining the pressure of about 6 to 8 bar (or even 6 to 15 bar) There is an effect.

The boosting pump 22 may be provided between the buffer tank 21a and the vaporizer 30 on the regeneration line L1 and may be supplied from the liquefied gas supplied from the feeding pump 21 or from the buffer tank 21a The liquefied gas can be supplied to the vaporizer 30 by pressurizing the liquefied gas to 80 to 120 bar.

The boosting pump 22 can pressurize the liquefied gas in accordance with the pressure demanded by the customer 41 and can be constituted by a centrifugal pump.

The carburetor 30 can regenerate the high-pressure liquefied gas that is provided on the regeneration line L1 and discharged from the boosting pump 22. [

Specifically, the carburetor 30 is provided on the regeneration line L1 between the customer 41 and the boosting pump 22 (at this time, a separate heater (not shown) is provided downstream of the carburetor 30 And can supply the liquefied gas vaporized by the customer 41 by heating to a temperature required by the customer 41. The high pressure liquefied gas supplied from the boosting pump 22 is vaporized through the vaporizer 30 Can be supplied to the customer 41.

The vaporizer 30 supplies the vaporizing heat medium through the heating medium circulating line L2 to exchange heat with the liquefied gas to vaporize the liquefied gas and circulate the vaporized heat medium which has been heat-exchanged with the liquefied gas through the heat medium circulating line L2.

The vaporizer 30 may further include a heating medium pump 31 and a heating medium heat exchanger 32 on the heating medium circulation line L2 to continuously supply a heat source to the vaporizing heating medium.

At this time, the vaporizer 30 may use a glycol aqueous solution, propane, or the like as a vaporizing heat medium for vaporizing the liquefied gas, and may supply the vaporized liquefied gas of high pressure to the consumer 41 without pressure fluctuation .

The vaporizer 30 is supplied with the circulated vaporizing heat medium to vaporize the liquefied gas and circulates the vaporizing heat medium to the heat medium circulating line L2 through the heating medium pump 31 and supplies the vaporized heat medium to the vaporizing heat medium through the heat medium heat exchanger 32 The heat source of seawater can be transmitted. That is, the heat source is transferred from the seawater to the vaporized heat medium and from the vaporized heat medium to the liquefied gas, thereby realizing the liquefaction of the liquefied gas. Here, the heat medium heat exchanger 32 is capable of exchanging heat with the vaporizing heat medium by receiving seawater (heat supply / heating medium) through the seawater pump SWP and the seawater supply line L3.

The vaporizer 30 may further include an additional heat source first heat exchanger 33 for further receiving a heat source to the vaporizing heat medium. At this time, the additional heat source first heat exchanger (33) may also be referred to as an additional heat medium first heat exchanger (33).

The additional heat source first heat exchanger 33 is provided on the additional heat source supply line L4 branched from the seawater supply line L3 and receives seawater from the additional heat source supply line L4 and supplies the steam to the steam supply line L6. And the heat source of the steam can be supplied to the seawater.

That is, the additional heat source first heat exchanger 33 exchanges heat between the seawater (heat supply / heating medium) and the steam (heat medium) supplied from the arrangement / recovery device 80 so that the vaporization heat medium is heat transferred from the steam Heat exchange with seawater (heat supply heat medium) makes it possible to regenerate liquefied gas.

The exhaust gas discharged from the gas turbine 50, which generates electric power, can be used to generate steam and regenerate the liquefied gas with the generated steam, thereby enabling efficient use of energy. .

The customer 41 can supply and consume the liquefied gas vaporized by the vaporizer 30. Here, the customer 41 may be a land terminal installed on the land, or a maritime terminal floated on the sea, by vaporizing the liquefied gas and supplying the liquefied gas in the gas phase.

The power consumption site 42 consumes power generated by the gas turbine generator 51 under the control of the switchboard SB and may be various devices installed inside or outside the hull 100. [

At this time, if the hull 100 is an electric propulsion ship, the generated power may be used for propelling the hull 100.

The switch board SB processes the energy (electric power) produced by the gas turbine 50.

The switchboard SB can deliver electricity, which is energy generated by the gas turbine 50 or the like, to various power consumers 42 in the hull 100. At this time, among the power consumers 42, And may be a motor (not shown) for driving a rotary shaft (not shown) for propulsion.

The gas turbine 50 generates electricity by consuming the liquefied gas or the evaporated gas supplied from the liquefied gas storage tank 10. The gas turbine 50 has a gas turbine generator 51 and can generate energy (electric power) using the rotational force of an impeller (not shown) generated by the combustion of the gas.

The gas turbine 50 can supply electric power generated by the gas turbine generator 51 to the switchboard SB and supply the exhaust gas discharged during the combustion of the liquefied gas or the evaporated gas to the array recovery device 80 have.

The gas combustion device (70) burns the evaporative gas generated in the liquefied gas storage tank (10). To this end, a gas combustion line (not shown) connected from the liquefied gas storage tank 10 may be connected to the gas combustion device 70, and a gas combustion line may be connected to the gas combustion line 70, (Not shown) for regulating the pressure (for example, reducing the pressure).

The exhaust gas generated in the process of burning the evaporated gas by the gas combustion apparatus 70 is discharged to the outside through an exhaust discharge line (not shown), or discharged through an exhaust delivery line (not shown) branched from the exhaust discharge line And may be supplied to the array collection apparatus 80 through the through-

Therefore, even if the duct burner for burning the evaporation gas and delivering the exhaust heat to the exhaust heat collecting device 80 is omitted, the exhaust heat recovering device 80 can recover sufficient exhaust heat, so that steam generation can be stably and smoothly implemented have.

Since the gas combustion apparatus 70 is provided at a large capacity capable of treating 100% of the evaporated gas generated in the liquefied gas storage tank 10, the amount of exhaust gas delivered through the exhaust delivery line is supplied to the array recovery apparatus 80 When switched to steam by steam, a large amount of steam may be generated.

The steam generated at this time may be supplied to the additional heat source first heat exchanger 33 through the steam supply line L6.

The gas combustion line is required to increase the flow pressure in order to supply 100% of the evaporated gas generated in the liquefied gas storage tank 10 to the gas combustion apparatus 70 because the diameter thereof is small. Thus, the gas combustion line may have a separate compressor so that the flow pressure of the gas combustion line is maintained at least 5 bar.

The exhaust heat collecting device 80 recovers exhaust (or exhaust heat) to generate a heat medium. At this time, the heating medium may be steam, and the batch recovery device 80 may be an economizer. Hereinafter, the heating medium will be limited to steam for convenience. The exhaust heat collecting device 80 can heat the water by exhaust gas to produce steam, and supply the steam to the additional heat source first heat exchanger 33.

At this time, the exhaust gas used by the exhaust gas recirculation device 80 may be exhaust gas generated from the gas turbine 50. That is, when the gas turbine 50 exhausts gas while consuming the gas, the exhausted exhaust gas may be supplied to the exhaust gas recirculation device 80 along the exhaust gas recirculation line to assist in steam production.

Further, the exhaust gas recycling apparatus 80 can generate steam by receiving the exhaust gas generated when the gas combustion apparatus 70 burns the evaporated gas. The gas combustion apparatus 70 burns the evaporated gas of the liquefied gas storage tank 10 at this time because the exhaust is an energy source having thermal energy. To the array recovery device 80. [ To this end, an exhaust delivery line may be provided from the exhaust discharge line through which the exhaust gas is exhausted from the gas combustion device 70 to the exhaust collection device 80.

The exhaust delivery line is connected to the exhaust recovery line in the gas combustion apparatus 70 and the exhaust of the gas turbine 50 can be joined to the exhaust of the gas combustion apparatus 70 and supplied to the exhaust collection apparatus 80.

The exhaust gas recirculation device 80 may be provided at a capacity capable of extinguishing exhaust gas generated when 100% of the gas turbine 50 is operated.

However, when the operation of the exhaust heat recovery device 80 is stopped due to a problem in the operation of the exhaust heat recovery device 80, the treatment of the exhaust supplied through the exhaust recovery line may be a problem. Accordingly, in order to prepare for a situation such as shutdown of the exhaust gas recycling apparatus 80, the present invention can be applied to an exhaust gas recirculation system in which exhaust gas discharged from the gas turbine 50 bypasses the exhaust gas recirculation apparatus 80, Can be provided.

The gas regeneration system 1 of the first embodiment of the present invention will be described according to the above-described configurations.

In the embodiment of the present invention, the feeding pump 21, the buffer tank 21a, the boosting pump 22, and the vaporizer 30 may be collectively referred to as a regeneration device. The regeneration device includes a liquefied gas storage tank Thereby regenerating the liquefied gas stored in the storage tank 10.

The most significant feature of the present invention is that the regeneration device operates in response to the power generated by the gas turbine generator 51 of the gas turbine 50 and is supplied to the liquefier It is possible to regenerate the gas.

This allows the gas regeneration system 1 according to the present invention to supply power to the regeneration apparatus through the arrangement recovery system (gas turbine 50, gas combustion apparatus 70, arrays recovery apparatus 80) The power generation engine GE can be omitted and the maintenance time is less than that of the system having the power generation engine GE, and the stable driving can be performed, and the driving reliability is extremely improved.

Further, by supplying the heat source necessary for regeneration of the regeneration apparatus through the steam supplied from the exhaust heat collecting apparatus 80, energy can be efficiently used.

Specifically, the regasification apparatus can cause the vaporized heating medium circulated in the vaporizer 30 to receive heat from the heating medium (steam) supplied from the arrangement recovery apparatus 80. [

Here, the vaporizer 30 may use direct gasification using seawater as a vaporizing heat medium, indirect vaporization using a propane or glycol aqueous solution as a vaporizing heat medium, and indirect vaporization is used in the embodiment of the present invention .

The detailed configuration for allowing the vaporizing heat medium to receive heat from the exhaust heat recovery device 80 is completed by providing the regenerator with the additional heat source first heat exchanger 33.

The additional heat source first heat exchanger 33 exchanges heat between the heat supply heating medium (sea water) and the heating medium (steam) supplied from the array recovery device 80 so that the heat of the heat supply medium (Seawater) to exchange the liquefied gas.

The gas regeneration system 1 according to the first embodiment of the present invention is configured to regenerate the regeneration gas from the regeneration recovery system (gas turbine 50, gas combustion apparatus 70, and arrangement recovery apparatus 80) It is possible to reduce the maintenance time compared to the gas regeneration system equipped with the power generation engine, and it is possible to perform the stable operation, and the driving reliability is extremely improved.

Further, by supplying the heat source necessary for regeneration of the regeneration apparatus through the steam supplied from the exhaust heat collecting apparatus 80, energy can be efficiently used.

3 is a conceptual diagram of a gas regeneration system according to a second embodiment of the present invention.

3, the gas regeneration system 1 according to the second embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 21, a buffer tank 21a, a boosting pump 22, A vaporizer 30, a customer 41, a power consuming place 42, a gas turbine 50, a steam turbine 60, a gas combustion device 70, and an arrangement recovery device 80.

The gas regeneration system 1 according to the second embodiment of the present invention is the same as the gas regeneration system 1 according to the first embodiment except that the steam turbine 60 is added in the gas regeneration system 1 according to the first embodiment, A supply line L5 and an additional heat source second heat exchanger 34 in place of the additional heat source first heat exchanger 33 have been added.

Therefore, in the gas regeneration system 1 according to the second embodiment of the present invention, the configuration excluding the steam turbine 60, the additional heat source second heat exchanger 34, and the surplus steam supply line L5 is the same as the first embodiment The same reference numerals can be used for the respective constitutions and constructions in the gas regeneration system 1 according to FIG.

The gas regeneration system 1 according to the second embodiment of the present invention will now be described with reference to Fig.

However, as described above, in the gas regeneration system 1 according to the first embodiment of the present invention, the structure of the steam turbine 60, the additional heat source second heat exchanger 34, and the surplus steam supply line L5 The configuration of the steam turbine 60, the additional heat source second heat exchanger 34, and the excess steam supply line L5 will be described in detail below, but the remaining configuration is the same as the first embodiment (1). ≪ / RTI > Here, the additional heat source second heat exchanger (34) may be referred to as an additional heat medium second heat exchanger (34).

The surplus steam supply line L5 connects the steam turbine 60 and the additional heat source second heat exchanger 34 and supplies the surplus steam supplied from the steam turbine 60 to the additional heat source second heat exchanger 34 .

The steam turbine 60 receives the steam supplied from the exhaust heat collecting device 80 and generates electricity. More specifically, the steam turbine 60 receives steam supplied from the exhaust heat collecting device 80, Thereby generating electric power. In the present invention, the exhaust gas recycling apparatus 80 can heat water by exhaust gas to produce steam, and supply the steam to the steam turbine 60.

The steam turbine 60 includes a steam turbine generator 61 and is capable of generating energy by rotating multiple impellers (not shown) using the steam supplied from the exhaust heat recovery device 80, (Power) produced by the power supply unit 60 may be supplied to the switchboard SB and supplied to the power consuming unit 42. [

However, the energy that can be produced by the steam turbine 60 may be based on the operation of the gas turbine 30. Thus, the amount of energy produced by the steam turbine 60 may be small relative to the gas turbine 50.

A line (not shown) for supplying steam to the steam turbine 60 in the array recovery device 80 may be connected. The line for supplying steam transfers the steam generated in the array recovery device 80 to the steam turbine 60. At this time, the steam can be condensed after turning the steam turbine 60, and the condensed water can be recovered along the steam recovery line (not shown) connected to the arrangement recovery device 80 from the steam turbine 60. A steam pump (not shown) is provided on the steam recovery line to transfer the condensed water.

In addition, the present invention may provide an excess steam supply line L5 for branching off the steam from the steam turbine 60 and supplying the steam to the additional heat source second heat exchanger 34. The surplus steam supply line L5 may branch off from the steam supply line or branch out from the steam turbine 60 to discharge the steam to the additional heat source second heat exchanger 34. [

The surplus steam supply line L5 is branched from the steam turbine 60, meaning that when the steam turbine 60 includes a multi-stage impeller, steam is blown off after some impellers are turned. The additional heat source second heat exchanger 34 may be operated such that the steam turbine 60 is operated at a temperature lower than the steam supplied Pressure and low temperature steam may be required.

Therefore, the surplus steam supply line L5 allows the steam to partially branch off the impeller in the steam turbine 60 and then branch off from the steam turbine 60, Steam can be supplied to the additional heat source second heat exchanger (34).

That is, the steam energy required by the steam turbine 60 and the steam energy required by the additional heat source second heat exchanger 34 are different from each other. In this embodiment, since the impeller can be partially turned by the difference, Energy recovery is possible. In addition, since the decompressed and cooled steam is delivered to the steam consumer, the additional heat source second heat exchanger 34 can be protected.

The surplus steam supply line L5 can discharge the surplus to the outside steam supply source when surplus is generated in the steam supplied from the array recovery apparatus 80 to the steam turbine 60. [ When the operation of the steam turbine (60) is completely stopped, the entire amount of steam generated in the exhaust heat collecting device (80) can be discharged to the outside as an excess portion.

The surplus steam supply line L5 may be branched from the steam supply line instead of the steam turbine 60 because the impeller included in the steam turbine 60 may not be rotated when the steam turbine 60 fails. have. Of course, the surplus steam supply line L5 may be provided to be connected to the additional heat source second heat exchanger 34 after being branched and then branched by the steam supply line and the steam turbine 60, respectively. Or the surplus steam supply line L5 may be directly connected to the surplus steam supply line L5 from the array recovery apparatus 80. [

The present invention can be applied to a steam turbine (60) that is capable of consuming steam even if the steam turbine (60) is operated. L5 to the additional heat source second heat exchanger 34. A control unit (not shown) may be provided to control the flow rate of the steam.

The control unit senses the load of the steam turbine 60 and the flow rate of steam flowing to the steam supply line, and can control the opening and closing (and / or opening) of the surplus steam supply line L5. The control unit controls the flow rate of the steam to be supplied to the steam turbine 60 to the steam flow rate in the steam supply line 60, (Not shown) provided in the surplus steam supply line L5 can be controlled by calculating the surplus.

The control unit may adjust the pressure of the steam supplied to the additional heat source second heat exchanger (34) in the surplus steam supply line (L5) by adjusting the degree of opening of the valve provided in the surplus steam supply line (L5). That is, if the valve is opened so that the amount of steam larger than the surplus amount is discharged to the additional heat source second heat exchanger 34, the steam pressure will be lowered, and steam less than the excess amount will be discharged to the additional heat source second heat exchanger 34 If the valve is opened or the valve is not opened, the steam pressure will rise. In this way, the control unit can adjust the steam supply pressure of the steam turbine 60.

The additional heat source second heat exchanger 34 is provided on the additional heat source supply line L4 branched from the seawater supply line L3 and receives seawater from the additional heat source supply line L4 and supplies the surplus steam supply line L5 ) To supply heat to the seawater by exchanging heat with each other.

That is, the additional heat source second heat exchanger 34 exchanges heat between seawater (heat supply and heat medium) and excess steam (heat medium) supplied from the steam turbine 60, and the heat of the vaporized heat medium is transferred from the steam Heat exchange with seawater (heat supply heat medium) makes it possible to regenerate liquefied gas.

Through the exhaust gas discharged from the gas turbine (50) that generates electric power, the exhaust heat recovery device (80) generates steam, the steam turbine (60) is operated by the generated steam to generate additional electric power, The surplus steam can be used to regenerate the liquefied gas when there is surplus steam remaining in production or when the steam turbine 60 can not be operated, thereby enabling efficient use of energy.

The gas regeneration system 1 according to the second embodiment of the present invention will be described in conjunction with the above-described configurations.

In the embodiment of the present invention, the feeding pump 21, the buffer tank 21a, the boosting pump 22, and the vaporizer 30 may be collectively referred to as a regeneration device. The regeneration device includes a liquefied gas storage tank Thereby regenerating the liquefied gas stored in the storage tank 10.

The most significant feature of the present invention is that the regeneration device operates in response to the power generated in the gas turbine generator 51 of the gas turbine 50 and the power generated in the steam turbine generator 61 of the steam turbine 60 , And the liquefied gas can be regenerated through surplus steam supplied from the steam turbine 60 among the heating medium (steam) supplied from the array recovery device 80.

As a result, the gas regeneration system 1 according to the present invention is capable of regenerating the regenerating apparatus 1 through the arrangement recovery system (the gas turbine 50, the steam turbine 60, the gas combustion apparatus 70 and the arrangement recovery apparatus 80) It is possible to omit the power generation engine GE and to reduce the maintenance time compared with the system having the power generation engine GE and to provide a stable driving and an extremely improved driving reliability It is effective.

In addition, since the steam supplied from the exhaust heat recovery device 80 supplies the heat source necessary for regeneration of the regenerator through surplus steam supplied from the steam turbine 60, energy can be efficiently used.

Specifically, the regeneration apparatus can cause the vaporized heat medium circulated in the vaporizer 30 to receive heat from surplus steam (heat medium) supplied from the steam turbine 60.

Here, the vaporizer 30 may use direct gasification using seawater as a vaporizing heat medium, indirect vaporization using a propane or glycol aqueous solution as a vaporizing heat medium, and indirect vaporization is used in the embodiment of the present invention .

The detailed configuration for allowing the vaporizing heat medium to receive heat from the steam turbine 60 is accomplished by having the regeneration device include an additional heat source second heat exchanger 34.

The additional heat source second heat exchanger 34 exchanges heat between the heat supply heating medium (seawater) and the heating medium (surplus steam) supplied from the steam turbine 60 so that heat is supplied from the heating medium to the heat medium Heat exchange with the heating medium (seawater) makes it possible to regenerate the liquefied gas.

The gas regeneration system 1 according to the second embodiment of the present invention includes the arrangement recovery system (the gas turbine 50, the steam turbine 60, the gas combustion apparatus 70 and the arrangement recovery apparatus 80) ), It is possible to reduce the maintenance time compared with the gas regeneration system equipped with the power generation engine, and it is possible to perform the stable operation and to improve the driving reliability remarkably.

Further, by supplying the heat source necessary for regeneration of the regeneration apparatus through surplus steam remaining in the arrangement recovery system, energy can be efficiently used.

4 is a conceptual diagram of a gas regeneration system according to a third embodiment of the present invention.

4, the gas regeneration system 1 according to the third embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 21, a buffer tank 21a, a boosting pump 22, A gasifier 30, a customer 41, a power consuming place 42, a gas turbine 50, a gas combustion device 70, and an arrangement recovery device 80.

The gas regeneration system 1 according to the third embodiment of the present invention is the same as the gas regeneration system 1 according to the first embodiment except that the additional heat source first heat exchanger 33 is omitted in the gas regeneration system 1 according to the first embodiment, L4 are connected to the exhaust gas outlet of the array recovery apparatus 80. [

Therefore, in the gas regeneration system 1 according to the third embodiment of the present invention, the same reference numerals are used for all constructions and constructions in the gas regeneration system 1 according to the first embodiment, And does not refer to the same configuration.

The gas regeneration system 1 according to the third embodiment of the present invention will now be described with reference to FIG.

However, as described above, in the gas regeneration system 1 according to the first embodiment of the present invention, the additional heat source supply line L4 is connected to the exhaust gas outlet of the exhaust gas recycling apparatus 80, Therefore, in the following description, the configuration in which the additional heat source supply line L4 is connected to the exhaust gas outlet of the array recovery apparatus 80 will be described in detail. However, the remaining configuration is the same as the gas regenerating system according to the first embodiment shown in FIG. (1).

In the embodiment of the present invention, the feeding pump 21, the buffer tank 21a, the boosting pump 22, and the vaporizer 30 may be collectively referred to as a regeneration device. The regeneration device includes a liquefied gas storage tank 10 To regenerate the liquefied gas stored therein.

The most significant feature of the present invention is that the regeneration apparatus operates by receiving the electric power generated from the gas turbine generator 51 of the gas turbine 50 and supplies the liquefied gas through the exhaust gas discharged from the exhaust- It is possible to regenerate it.

This allows the gas regeneration system 1 according to the present invention to provide power to the regeneration apparatus through the arrangement retrieval system (gas turbine 50, gas combustion apparatus 70 and arrays reclamation apparatus 80) The power generation engine GE can be omitted and the maintenance time is less than that of the system having the power generation engine GE, and the stable driving can be performed, and the driving reliability is extremely improved.

In addition, by supplying the heat source necessary for regeneration of the regeneration apparatus through the exhaust gas discharged from the exhaust heat collecting apparatus 80, energy can be efficiently used.

Specifically, the regasification apparatus can cause the vaporized heat medium circulated in the vaporizer 30 to receive heat from the exhaust gas discharged from the exhaust heat collecting apparatus 80.

Here, the vaporizer 30 may use direct gasification using seawater as a vaporizing heat medium, indirect vaporization using a propane or glycol aqueous solution as a vaporizing heat medium, and indirect vaporization is used in the embodiment of the present invention .

The detailed configuration for allowing the vaporizing heat medium to receive heat from the exhaust gas discharged from the exhaust heat collecting device 80 is completed by connecting the additional heat source supply line L4 to the exhaust gas outlet of the exhaust heat collecting device 80. [

The additional heat source supply line L4 exchanges heat between the heat supply heating medium (seawater) and the exhaust gas discharged from the exhaust heat collecting device 80, exchanges heat with the heat supply heating medium (seawater) to which the vaporization heat medium is transferred from the heat supplied from the exhaust gas So that the liquefied gas can be regenerated.

The gas regeneration system 1 according to the third embodiment of the present invention is configured to regenerate the regeneration gas from the regeneration recovery system (gas turbine 50, gas combustion apparatus 70, and arrangement recovery apparatus 80) It is possible to reduce the maintenance time compared to the gas regeneration system equipped with the power generation engine, and it is possible to perform the stable operation, and the driving reliability is extremely improved.

In addition, there is an effect that energy can be efficiently used by supplying a heat source necessary for regeneration of the regeneration apparatus through the exhaust gas discharged from the exhaust system.

5 is a conceptual diagram of a gas regeneration system according to a fourth embodiment of the present invention.

5, the gas regeneration system 1 according to the fourth embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 21, a buffer tank 21a, a boosting pump 22, A vaporizer 30, a customer 41, a power consuming place 42, a gas turbine 50, a steam turbine 60, a gas combustion device 70, and an arrangement recovery device 80.

The gas regeneration system 1 according to the fourth embodiment of the present invention is the same as the gas regeneration system 1 according to the second embodiment except that the additional heat source second heat exchanger 34 in the gas regeneration system 1 according to the second embodiment is omitted, L4 are connected to the exhaust gas outlet of the array recovery apparatus 80. [

Therefore, in the gas regeneration system 1 according to the fourth embodiment of the present invention, the same reference numerals can be used for all configurations and constructions of the gas regeneration system 1 according to the second embodiment, And does not refer to the same configuration.

Hereinafter, a gas regeneration system 1 according to a fourth embodiment of the present invention will be described with reference to FIG.

The most significant feature of the present invention is that the regeneration device operates in response to the power generated in the gas turbine generator 51 of the gas turbine 50 and the power generated in the steam turbine generator 61 of the steam turbine 60 , And the liquefied gas can be regenerated through the exhaust gas discharged from the array recovery device (80).

This is because, as described above, the gas regeneration system 1 according to the fourth embodiment of the present invention is different from the third embodiment of the present invention in that the steam turbine 60 is additionally constructed and recovered from the steam turbine generator 61 The same is true except that the burner is supplied with additional power.

That is, the gas regeneration system 1 according to the fourth embodiment of the present invention includes the exhaust gas recirculation system (the gas turbine 50, the steam turbine 60, the gas combustion apparatus 70, and the arrangement recovery apparatus 80) It is possible to omit the power generation engine GE by supplying electric power to the regenerating apparatus through the power generation engine GE so that the maintenance time is less than that of the system including the power generation engine GE, And the other structures and effects are the same as those in the third embodiment.

6 is a conceptual diagram of a gas regeneration system according to a fifth embodiment of the present invention.

6, the gas regeneration system 1 according to the fifth embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 21, a buffer tank 21a, a boosting pump 22, A vaporizer 30, a customer 41, a power consuming place 42, a gas turbine 50, a steam turbine 60, a gas combustion device 70, and an arrangement recovery device 80.

The gas regeneration system 1 according to the fifth embodiment of the present invention is a combination of all of the gas regeneration systems 1 according to the first to fourth embodiments and includes the additional heat source third heat exchanger 35, There is a difference in that it is newly constructed.

Therefore, in the gas regeneration system 1 according to the fifth embodiment of the present invention, the configuration except for the additional heat source third heat exchanger 35 is the same as that of the gas regeneration system 1 according to the first to fourth embodiments The same reference numerals can be used for convenience of description and the like. Here, the additional heat source third heat exchanger (35) may also be referred to as an additional heat medium third heat exchanger (35).

Hereinafter, a gas regeneration system 1 according to a fifth embodiment of the present invention will be described with reference to FIG.

The additional heat source third heat exchanger 35 is provided on the additional heat source supply line L4 and the surplus steam supply line L5 to supply the seawater after heat exchange with the exhaust gas in the exhaust heat recovery device 80 to the additional heat source supply The excess steam supplied through the excess steam supply line L5 supplied through the line L4 is heat-exchanged and the heat source of the surplus steam can be supplied to the seawater after being heat-exchanged with the exhaust gas in the exhaust heat collecting apparatus 80.

The most significant feature of the present invention is that by supplying the heat source necessary for regeneration of the regasification apparatus through the exhaust steam discharged from the steam recovery unit 80 and surplus steam supplied from the steam turbine 60, There is an effect that is possible. Here, the regasification device may be a designation commonly referred to as a feeding pump 21, a buffer tank 21a, a boosting pump 22, and a vaporizer 30.

Specifically, the regasification apparatus is configured so that the vaporized heat medium circulated in the vaporizer 30 can be supplied with heat from the exhaust gas supplied from the exhaust heat collecting apparatus 80 and the surplus steam remaining in the steam turbine 60 have.

Here, the vaporizer 30 may use direct gasification using seawater as a vaporizing heat medium, indirect vaporization using a propane or glycol aqueous solution as a vaporizing heat medium, and indirect vaporization is used in the embodiment of the present invention .

The detailed configuration for allowing the vaporizing heat medium to receive heat from the exhaust heat recovery device 80 is completed by providing the regeneration device with the additional heat source third heat exchanger 35.

The additional heat source third heat exchanger 35 exchanges heat between the heat supply heating medium (seawater) and the heating medium (surplus steam) supplied from the exhaust heat collecting device 80 so that the heat of the vaporizing heat medium is transferred from the heat medium Heat exchange Heat exchange with heating medium (seawater) is possible to regenerate liquefied gas.

Since the heat supply heat medium (seawater) passes through the exhaust gas outlet of the exhaust heat collecting device 80 and the heat supply heat medium receives heat from the exhaust gas, the additional heat source third heat exchanger 35 is connected to the exhaust heat recovery heat exchanger 80, Exchanges heat with the excess supply steam supplied from the exhaust heat recovery unit 80, heat exchange is performed between the exhaust gas and the heat supply heat medium to which the heat supplied from the heat transfer medium is transferred, and the liquefied gas So that it can be regenerated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Gas regeneration system 10: Liquefied gas storage tank
21: feeding pump 21a: buffer tank
22: boosting pump 30: vaporizer
31: heat medium pump 32: heat medium heat exchanger
33: additional heat source first heat exchanger 34: additional heat source second heat exchanger
35: Additional Heat Source Third Heat Exchanger 41: Demand Source
42: power consuming place 50: gas turbine
51: Gas turbine generator 60: Steam turbine
61: Steam turbine generator 70: Gas burner (GCU)
80: Array collection device (HRSG) 100: Hull
200: regenerating apparatus receiving unit 300: array collecting apparatus receiving unit
SWP: Seawater pump SB: Switchboard
L1: regasification line L2: heat medium circulation line
L3: Sea water supply line L4: Additional heat source supply line
L5: surplus steam supply line L6: steam supply line
ER: engine room

Claims (8)

A liquefied gas storage tank for storing a liquefied gas or an evaporated gas;
A gas turbine generator for generating electricity using the liquefied gas or the evaporated gas as fuel;
A gas combustion device for combusting the evaporation gas;
An arrangement recovery device for receiving exhaust gas discharged from at least one of the gas turbine generator and the gas combustion device to generate a heating medium; And
And a regeneration device for regenerating the liquefied gas stored in the liquefied gas storage tank,
Wherein the regasification device comprises:
Wherein the gas turbine generator is operated in response to the power generated by the gas turbine generator,
And regenerates the liquefied gas through the heating medium supplied from the apparatus for recovering arrays. 2. The apparatus of claim 1,
A feeding pump for supplying liquefied gas stored in the liquefied gas storage tank to a customer;
A boosting pump for supplying and pressurizing the liquefied gas from the feeding pump; And
And a vaporizer supplied with the pressurized liquefied gas from the boosting pump and exchanging heat with the vaporizing heat medium to regenerate the vaporized heat medium,
The vaporizer includes:
So that the vaporized heat medium is supplied with heat from the heat medium supplied from the exhaust heat collecting device. 3. The method according to claim 2,
Wherein the gas regeneration system is a seawater. 3. The apparatus according to claim 2,
A heating medium circulation line through which the vaporizing heating medium circulates;
A heating medium pump provided on the heating medium circulation line for circulating the vaporizing heat medium;
A heat medium heat exchanger provided on the heat medium circulation line for transferring heat to the vaporization heat medium by exchanging heat between the vaporization heat medium and the heat medium heating medium; And
And an additional heat medium heat exchanger for exchanging heat between the heat supply heating medium and the heat medium supplied from the exhaust heat recovery apparatus,
The vaporization heat medium,
Exchanges heat with the heat supply medium having passed the heat supplied from the heat medium, thereby regenerating the liquefied gas. 5. The method of claim 4,
The vaporization heat medium is a glycol aqueous solution or propane,
Wherein the heat supply heating medium is seawater,
Wherein the heating medium is steam. 6. The method of claim 5,
Further comprising a steam turbine generator for generating electric power through the heat medium supplied from the exhaust heat recovery apparatus,
Wherein the regasification device comprises:
Wherein the steam generator is operated by receiving power generated from the steam turbine generator. 7. The steam turbine generator according to claim 6,
Wherein the excess heat medium remaining after generating the electric power among the heat medium supplied from the exhaust heat recovery device is supplied to the additional heat medium heat exchanger. A vessel comprising the gas regeneration system of any one of claims 1 to 7.

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