CN209180657U - Ocean platform formula receiving station LNG gasification device - Google Patents
Ocean platform formula receiving station LNG gasification device Download PDFInfo
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- CN209180657U CN209180657U CN201821878569.8U CN201821878569U CN209180657U CN 209180657 U CN209180657 U CN 209180657U CN 201821878569 U CN201821878569 U CN 201821878569U CN 209180657 U CN209180657 U CN 209180657U
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Abstract
A kind of ocean platform formula receiving station LNG gasification device, including submerged combustion gasifier, the gasification of LNG is realized in submerged combustion gasifier, it further include circulating pump, air heater, waste heat boiler, cooler, gas electricity generator and low temperature water cooling air conditioning system, the utility model comprehensively utilizes gasification installation of the combustion heat of the smoke discharging residual heat of gas electricity generator, air energy and natural gas itself come the LNG that gasifies, especially suitable for the northern area of China Large marine LNG receiving station.Compared with gasification system used at present, with being greatly reduced, investment, energy saving, ecology influence is small, home-made equipment degree is high, stable and reliable operation advantage.
Description
Technical field
The utility model relates to the gasification of liquefied natural gas (hereinafter referred to as LNG), especially a kind of ocean platform formula is connect
Receive station LNG gasification device.
Background technique
The main component of liquefied natural gas is methane, and being recognized is fossil energy most clean on the earth, colourless, tasteless,
It is nontoxic, non-corrosive.
1. receiving station's LNG gasification device brief introduction
LNG is low-temperature deep medium, and reachable -162 DEG C of low temperature need to provide big hereinafter, its gasification is an endothermic process
The heat of amount.LNG gasification device is mainly free bath, water-bath type, open-shelf, intermediate medium formula and submerged combustion, and the former two uses
In the gasification facility (50t/h or less) of small-scale satellite station, the latter three kinds types common for Large LNG receiving station, vaporization ability
All in 100t/h or more.
Open-frame type vaporizer (Open rack vaporizer, abbreviation ORV) is a kind of aluminum alloy finned heat exchanger, is added
Thermal medium is seawater.Its advantages are that device structure is simple, operation control is simple, operating cost is low, high reliablity；It is lacked
Point is to take up a large area, and equipment manufacturing cost is expensive, and construction is needed to take seawater facility and mating sea water filter, to seawater quality requirement
It is high.In addition seawater temperature after heat exchange declines, and contains chlorine residue, has an impact to the marine eco-environment in region.
Intermediate medium formula gasifier (Intermediate fluid vaporizer, abbreviation IFV) is that a kind of shell-and-tube changes
Hot device, heat medium are seawater, a certain amount of heated medium of storage, such as propane in heat exchanger.The heat of seawater passes to first
Then propane, propane endothermic gasification exchange heat with low temperature LNG, exothermic condensation, LNG gasifies after obtaining heat.Its advantages are to sea
Water water quality requirement is not high, and occupied area is moderate, operation control is simple, operating cost is low；The disadvantage is that the device is complicated, cost is extremely high
It is expensive, it is also desirable to which that construction takes seawater and purification facility, it is possible to the influence area marine eco-environment.
Submerged combustion gasifier (Submerged combustion vaporizer, abbreviation SCV) is a kind of water-bath type
Gasifier, LNG tubulation are arranged in sea water bath.It is imported into sea water bath after the air vigorous combustion that natural gas and air blower are blown into,
LNG is transferred heat to, is vaporized, flue gas is discharged finally by chimney.Its advantages are the effects that exchanges heat in various gasifiers
Rate highest keeps heat exchange area minimum, equipment manufacturing cost is most because the bubble that high-temperature flue gas generates in water enhances process heat transfer
It is low.Seawater not being needed simultaneously, heat being provided, capable of fast starting independent of environment, Load Regulation is flexible, reliable for operation.It
It is done fuel (1~2%) the disadvantage is that needing to consume certain natural gas, thus operating cost is high.
By land in the commonly used three kinds of gasifiers of receiving station, ORV and IFV are used for base load (outer displacement is stablized),
SCV is used for emergency peak regulation load.According to National Development and Reform Committee's file, (hair changes the energy and advises [2018] No. 637 " about quickening gas storage facility
Build and improve the opinion of gas storage and peak-shaving assisted hatching mechanism " notice), it is desirable that receiving station should all have emergency peak regulation energy
Power, therefore land receiving station is all equipped with SCV successively at present.Regional in south China, SCV only undertakes emergency load, is equipped with
Quantity and vaporization ability, the generally less than gasifier of base load.And in northern area, in addition to undertaking emergency load, in the winter
Ji Yinwei ocean temperature is low not to be available ORV or IFV, it is practical to have also taken on base load, therefore the quantity and gasification being equipped with
Ability is identical as other gasifiers, causes equipment redundancy amount very big, invests huge.
2. the characteristics of ocean platform formula receiving station (PSRU):
Ocean platform formula receiving station provides a kind of sea LNG production, storage, transfer device and method, at sea installs
(construction and assembly of all platform structures and equipment shift to an earlier date by land the device of platform-type natural gas liquefaction, storage and transhipment
Shipyard complete), untreated natural gas is transported to from land by platform liquefaction, storage by submarine pipeline, and passes through LNG
The liquefied natural gas of storage is transported through by cargo ship, realizes offshore liquefaction, storage and the transhipment of natural gas, solves land
Liquefied natural gas (LNG) plant addressing is difficult, approval process is long, construction period is long, construction cost is high, apart from the problems such as harbour is remote.
3. various gasifiers are to the adaptation situation of ocean platform formula receiving station (PSRU):
The gasification process of ocean platform formula receiving station (PSRU), due to being platform-type arrangement, it is desirable that equipment area occupied is most
Measure it is small, it is light-weight, therefore the large-scale gasifier as ORV no longer adapts to.
In terms of Energy Angle, IFV summer is low using seawater gasification LNG operating cost, but winter ocean temperature is low even
It freezes, gasification institute's calorific requirement can not be provided.
A solution is configuration same number and specification SCV, summer operation IFV, winter operation SCV, but this just leads
Cause equipment redundancy big, occupied space is big, invests big drawback, and the layout required with ocean platform formula receiving station (PSRU) is simplified,
Quick original intention is invested to deviate from.Another solution is configuration steam generating system, with steam heating seawater, after heating
Seawater gasification LNG, but the energy consumption ratio SCV of this mode is higher.Because of the final still burning from natural gas of the heat of steam,
Not only there is flue gas loss, but also what is utilized is that (for SCV since bath temperature is essentially room temperature, what is utilized is combustion gas to combustion gas low heat value
High heating value, heat ratio low heat value are high 10%)；And the operation of sea water pump, the purification of seawater, the operation of steam boiler require to disappear
A large amount of electric power are consumed, gas electricity generator of these electric power on platform also consumes combustion gas.Therefore the operation of winter this scheme at
Ben Genggao, and the north is in winter with gas peak.
From operational reliability angle, since IFV needs to pump seawater using seawater, with the variation especially typhoon of tidal level
Equal mal-conditions, sea water pump reliability of operation are difficult to ensure；Injection sea of the Bohai Sea as the Yellow River and Haihe River, sediment content is high,
Marine organisms are abundant, it is easy to block seawater pipeline and gasifier, operational reliability is also difficult to ensure.Once blocking, in ocean
Dredging operation, very time-consuming, labour-consuming, expensive are carried out on platform.
From home-made equipment angle, though there is experimental prototype in the country IFV, import equipment is all used in practical construction, moreover
Only Japan can produce at present；And the domestic and international manufacturer of SCV is numerous, domestic 200t/h LNG gasification device continuous 2 years into
Enter China's major technologies and equipment and promotes catalogue.
Utility model content
The utility model is to overcome various gasifiers for ocean platform formula receiving station (PSRU) LNG gasification system requirements
The shortcomings that, a kind of ocean platform formula receiving station LNG gasification device and gasification process are provided, which uses unique energy regenerating
Circulation sufficiently recycles gas electricity generator fume afterheat, air heat energy to reduce the amount of consumed gas of traditional SCV gasifier, referred to as
SAWR (SCV with Air and Waste heat Recovery) technique.Compared with gasification system used at present, have
It is greatly reduced that investment, energy saving, ecology influence is small, home-made equipment degree is high, stable and reliable operation advantage.
The technical solution of the utility model is as follows:
A kind of ocean platform formula receiving station LNG gasification device, including submerged combustion gasifier, the gasification of LNG are to soak
And do not realized in combustion-type gasifier, it is characterized in that further include circulating pump, air heater, waste heat boiler, cooler, combustion gas
Generator and low temperature water cooling air conditioning system, the high-temperature water pipeline of the waste heat boiler output and the submerged combustion gasify
Device is connected, and the water at low temperature output pipe of the submerged combustion gasifier is connected through a switch with lye intake line, and described is low
The end of warm water output pipe is connected with the circulating pump, four bye-passes of efferent duct point of the circulating pump:
First bye-pass is connected through switch, the low temperature water cooling air conditioning system with the high-temperature water pipeline；
Second bye-pass connects the input terminal of the cooler through switching, and another input terminal of the cooler is air input
End, an output pipe of the cooler are connected with the high-temperature water pipeline, another output pipe of the cooler and institute
One input terminal of the gas electricity generator stated is connected, and another input terminal of the gas electricity generator is natural gas input, combustion gas hair
The exhaust output tube road of motor is connected with the waste heat boiler；
Third bye-pass is through switch, the air heater and the waste heat boiler) it is connected；
4th bye-pass is connected through switching with fresh water manufacturing equipment.
Using the LNG gasification method of above-mentioned ocean platform formula receiving station LNG gasification device, it is characterized in that this method includes
The following steps:
1) gasification of LNG is realized in submerged combustion gasifier, the high-temperature water warp of the waste heat boiler output
The high-temperature water pipeline imports the submerged combustion gasifier；
2) water at low temperature that the submerged combustion gasifier described in generates adds after suitable lye is added through the circulating pump
Pressure；
3) water at low temperature of the circulating pump output described in is divided into following four tunnel, passes through the switch control on each road:
1. summer enters the low temperature water cooling air conditioning system through the first bye-pass, for providing air conditioner load, add simultaneously
The water of heat imports the high-temperature water pipeline and imports the submerged combustion gasifier；
2. entering the cooler through the second bye-pass, the temperature for cooling down the gas electricity generator sucking air is gone,
The water remittance the being heated high-temperature water pipeline importing submerged combustion gasifier, while gas electricity generator generation
The fume afterheat input waste heat boiler；
3. inputting the waste heat boiler after the air heater heating of third bye-pass；
4. sending fresh water manufacturing equipment to manufacture fresh water through the 4th bye-pass, used for platform.
The technical effect of the utility model is as follows:
1, the LNG gasification method of the utility model ocean platform formula receiving station LNG gasification device, referred to as SAWR technique,
Especially suitable the northern area of China, overcomes the problem that traditionally SCV gas consumption is high, can be by amount of consumed gas when summer
Reduce by 50%；When winter, amount of consumed gas reduces by 7%.SAWR technique does not have any shadow independent of environment, to marine ecology
It rings；In typhoon, it is extremely cold under the conditions of same stable operation, compared with existing ORV and IFV gasification system, the reliability of gas supply
It greatly improves.
2, the SCV equipment in the utility model SAWR technique enhances liquid since high-temperature water enters SCV sea water bath
Turbulence ability, further improves heat exchange efficiency.
3, the water at low temperature of SAWR technique can be air precooling needed for gas electricity generator, improve the efficiency of gas electricity generator,
It is also used as cold source of air conditioning, saves the refrigerant compression power consumption of conventional air-conditioning.
4, SCV burning 1t natural gas, can produce 2.25t water (CH4→2H20), low temperature side of this part water in SAWR technique
Extraction, can be used as platform industrial water or domestic water after conventional purification.
5, compared with gasification system used at present, the utility model, which has, is greatly reduced investment, energy saving, ecological shadow
Ring the advantage of small, home-made equipment degree height, stable and reliable operation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model ocean platform formula receiving station LNG gasification device
Specific embodiment
In order to deepen the understanding to the utility model, the principles of the present invention are made below in conjunction with attached drawing further detailed
It states.
First referring to Fig. 1, Fig. 1 is the schematic diagram of the utility model ocean platform formula receiving station LNG gasification device, You Tuke
See, the utility model ocean platform formula receiving station LNG gasification device, including submerged combustion gasifier 1, the gasification of LNG be
It is realized in submerged combustion gasifier 1, further includes circulating pump 2, air heater 3, waste heat boiler 4, cooler 5, combustion gas hair
Motor 6 and low temperature water cooling air conditioning system 7, the high-temperature water pipeline and the submerged combustion gas that the waste heat boiler 4 exports
Change device 1 to be connected, the water at low temperature output pipe of the submerged combustion gasifier 1 is connected through a switch with lye intake line, described
The end of water at low temperature output pipe be connected with the circulating pump 2, four bye-passes of efferent duct point of the circulating pump 2:
First bye-pass is connected through switch, the low temperature water cooling air conditioning system 7 with the high-temperature water pipeline；
Second bye-pass connects the input terminal of the cooler 5 through switching, and another input terminal of the cooler 5 is that air is defeated
Enter end, an output pipe of the cooler 5 is connected with the high-temperature water pipeline, another output pipe of the cooler 5
It is connected with an input terminal of the gas electricity generator 6, which is natural gas input, should
The exhaust output tube road of gas electricity generator 6 is connected with the waste heat boiler 4；
Third bye-pass is connected through switch, the air heater 3 with the waste heat boiler 4；
4th bye-pass is connected through switching with fresh water manufacturing equipment.
Using the LNG gasification method of above-mentioned ocean platform formula receiving station LNG gasification device, this method includes the following steps:
1) gasification of LNG is realized in submerged combustion gasifier 1, the high-temperature water that the waste heat boiler 4 exports
The submerged combustion gasifier 1 is imported through the high-temperature water pipeline；
2) water at low temperature that the submerged combustion gasifier 1 described in generates is added after suitable lye through the circulating pump 2
Pressurization；
3) water at low temperature that the circulating pump 2 described in exports is divided into following four tunnel, passes through the switch control on each road:
1. summer enters the low temperature water cooling air conditioning system 7 through the first bye-pass, for providing air conditioner load, simultaneously
The water of heating imports the high-temperature water pipeline and imports the submerged combustion gasifier 1；
2. entering the cooler 5 through the second bye-pass, go to cool down the temperature that the gas electricity generator 6 sucks air
Degree, the water being heated import the high-temperature water pipeline and import the submerged combustion gasifier 1, while gas electricity generator 6
The fume afterheat input of the generation waste heat boiler 4；
3. inputting the waste heat boiler 4 after the air heater 3 of third bye-pass heats；
4. sending fresh water manufacturing equipment to manufacture fresh water through the 4th bye-pass, used for platform.
The gasification of LNG is realized in SCV 1 in submerged combustion gasifier, different from traditional SCV, this is practical new
Type has one high-temperature water to enter in SCV 1, the partial gasification heat provided, so that the consumption of natural gas substantially reduces.
Water at low temperature is drawn from SCV 1, is pressurizeed by circulating pump 2, then in turn through air heater 3 and gas electricity generator
6 enter the waste heat boiler 4, return to SCV heating LNG after obtaining heat, this is the major loop of heat recovery in SAWR technique.
In addition to this, a part of water at low temperature is the sucking air precooling of gas electricity generator, to improve it through subcooler 5
Generating efficiency, there are also one water at low temperature be used to for entire platform provide low temperature water cooling air conditioning system 7 service.This two bursts of water at low temperature
After obtaining heat, converge with the high-temperature water of major loop.
In SCV, the generation CO of combustion of natural gas2It is dissolved into water, recirculated water can be made in acidity, therefore in recirculated water
Lye is added to neutralize.The H that combustion of natural gas generates2O small part is scattered and disappeared with flue gas, and most of draw from circulation loop is used to make
Fresh water is made, is used for platform.
Experiment shows the utility model compared with gasification system used at present, has and investment is greatly reduced, saves energy
Source, ecology influence is small, home-made equipment degree is high, stable and reliable operation advantage.
Claims (1)
1. a kind of ocean platform formula receiving station LNG gasification device, including submerged combustion gasifier (1), the gasification of LNG are to soak
Do not have realization in combustion-type gasifier (1), it is characterised in that further include circulating pump (2), air heater (3), waste heat boiler
(4), cooler (5), gas electricity generator (6) and low temperature water cooling air conditioning system (7), the high temperature of the waste heat boiler (4) output
Water lines are connected with the submerged combustion gasifier (1), the water at low temperature output pipe warp of the submerged combustion gasifier (1)
One switch is connected with lye intake line, and the end of the water at low temperature output pipe is connected with the circulating pump (2), this is followed
Ring pumps four bye-passes of efferent duct point of (2):
First bye-pass is connected through switch, the low temperature water cooling air conditioning system (7) with the high-temperature water pipeline；
Second bye-pass connects the input terminal of the cooler (5) through switching, and another input terminal of the cooler (5) is that air is defeated
Enter end, an output pipe of the cooler (5) is connected with the high-temperature water pipeline, another output of the cooler (5)
Pipeline is connected with an input terminal of the gas electricity generator (6), which is that natural gas is defeated
Enter end, the exhaust output tube road of the gas electricity generator (6) is connected with the waste heat boiler (4)；
Third bye-pass is connected through switch, the air heater (3) with the waste heat boiler (4)；
4th bye-pass is connected through switching with fresh water manufacturing equipment.
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| CN201821878569.8U CN209180657U (en) | 2018-11-15 | 2018-11-15 | Ocean platform formula receiving station LNG gasification device |
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| CN109340560A (en) * | 2018-11-15 | 2019-02-15 | 上海宏华海洋油气装备有限公司 | Ocean platform formula receiving station LNG gasification device and gasification process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340560A (en) * | 2018-11-15 | 2019-02-15 | 上海宏华海洋油气装备有限公司 | Ocean platform formula receiving station LNG gasification device and gasification process |
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