CN205014035U - LNG gasification heating and central heating system combination system in winter - Google Patents
LNG gasification heating and central heating system combination system in winter Download PDFInfo
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- CN205014035U CN205014035U CN201520611421.8U CN201520611421U CN205014035U CN 205014035 U CN205014035 U CN 205014035U CN 201520611421 U CN201520611421 U CN 201520611421U CN 205014035 U CN205014035 U CN 205014035U
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Abstract
The utility model discloses a LNG gasification heating and central heating system combination system in winter, a serial communication port, including LNG vaporizing station system and central heating system, the water -bath heating ware of LNG vaporizing station system passes through the central heating station that pipeline connects central heating system, and some carries the water -bath heating ware through pipeline the hot water at central heating station, and another part is passed through the pipe -line transportation and is given the central heating system 0 heat supply. The utility model discloses let two sets of independent systems of LNG vaporizing station system and central heating system combine together, realize the complementary utilization of the energy, LNG complete gasification and reach suitable gasification temperature when the outside air temperature was relatively low winter has been realized, optimize the complete set gasification equipment among the LNG vaporizing station, still can reduce air gasification equipment's volume when reducing the investment to a certain extent, save the heat source of water -bath heating ware, including electric power or fuel, reduced the running cost.
Description
Technical field
The utility model relates to a kind of energy recovery utilizing system.
Background technique
LNG has become the valuable source of energy strategy structural adjustment and deposit, and LNG industry also becomes one of current global evolution industry the swiftest and the most violent.LNG must could grid-connected air feed after heating and gasifying when practical application, and therefore these gasification installations are visual plants indispensable in LNG transmission & distribution application system.The LNG heating and gasifying device that current China commonly uses mainly contains water hot type gasification installation, submersible burning hot type gasification installation, air heating type gasification installation, vapor heating type gasification installation and middle heat-carrying agent hot type gasification installation etc., these devices respectively have advantage, deficiency and applicable situation, but all have in energy-conservation, consumptive material and use etc. and be worth improving the place of improving.The selection of thermal source has very large impact to the gasification of LNG and performance driving economy.If Fig. 1 is LNG vaporizing station process flow diagram, the storage temperature under LNG Liquefied natural gas (LNG) normal pressure is-162 DEG C, is transported to vaporizing station by low-temperature tanker, and the pressurized machine utilizing tank car to carry at unloading deck pressurizes to tank car, utilizes pressure reduction LNG to be delivered to storage tank and stores.During gasification by storage tank pressurized machine by after LNG supercharging, adopt the mode of air temperature type gasification+heating water bath gasify and heat gas phase rock gas, finally by pressure regulation, measure, add smelly rear feeding transmission and distribution network.In the process, the boil-off gas (BOG) of LNG tank car, storage tank inputs pipe network after adopting BOG air temperature type heater to heat, and the safe dispersing gas of superpressure (EAG) of storage tank, vaporizer adopts EAG air temperature type heater to heat, emptying through exhaust stack.As Fig. 2, for LNG gasifying process figure, although use wider air heating type gasification installation structure simple in current LNG vaporizing station, do not consume the energy, operating cost is low, but its shortcoming is large by environmental influence in running, when the temperature of the surroundings is low, the easy frosting of its fin and affect the gasification of LNG, sometimes because ambient temperature is too low, cause gasification efficiency greatly to reduce, at this moment needing, water-bath type heater is set again it is heated further.Water-bath type heater is different according to thermal source, mainly contains hot water heating formula, combustion heating formula, electric heating etc., and when the NG outlet temperature after the gasification of sky temperature vaporizer is generally lower than 0 DEG C, just automatically starting water-bath heater need heat further to it.Water-bath type heater is generally volumetric heat exchanger, its structure is for put into hot water tank by heat conduction coil pipe, utilize the hot water in shell side, to the low temperature be immersed in inner heat conduction coil pipe, other carries out heating and gasifying, makes its Outlet Gas Temperature meet the requirement (general temperature is higher than 5 DEG C) of pipeline transport gas.When outside air temperature is low especially, need in LNG gasifying process to consume a large amount of thermals source to meet the outlet temperature of other rock gas.Energy consumption is comparatively large, and operating cost is higher.
Model utility content
The purpose of this utility model is to provide a kind of LNG gasification heating and central heating system association system in winter, and the delivery produced by central heating system as the thermal source of water-bath heater, replaces traditional heater to LNG vaporizing station, reduces and invests.
The technological scheme that the utility model provides is:
A kind of LNG gasification heating and central heating system association system in winter, it is characterized in that, comprise LNG vaporizing station system and central heating system, the water-bath heater of LNG vaporizing station system connects the central heating stations of central heating system by conveyance conduit, central heating stations hot water a part is transported to water-bath heater by conveyance conduit, another part by Cemented filling to terminal temperature difference heat supply.
The hot water that the utility model produces by utilizing central heat supply energy source station, while provide heat supply to serve for terminal temperature difference, a part of hot water is delivered in LNG vaporizing station, as the thermal source of water-bath heater through delivery pipe.The LNG(liquified natural gas of-145 DEG C) first become temperature lower than the gaseous natural gas (NG) of 0 DEG C through the gasification of empty temperature vaporizer under cryogenic, and then through the gaseous natural gas being warming up to more than 5 DEG C further of water-bath heater, then through the follow-up pressure regulation of vaporizing station, measure, add smelly after deliver in natural gas transmission and distribution pipe network.The utility model has following beneficial effect:
1, allow LNG vaporizing station system and central heating system two independently system of overlapping combine, realize energy complementation and utilize;
2, achieve LNG be gasified totally when outside air temperature is relatively low in the winter time and reach suitable gasification temperature;
3, optimize the complete gasification installation in LNG vaporizing station, while reducing investment, also can reduce the volume of air gasification device to a certain extent;
4, eliminate the thermal source of water-bath heater, comprise electric power or fuel, reduce operating cost.
Accompanying drawing explanation
Fig. 1 is traditional LNG vaporizing station process flow diagram.
Fig. 2 is traditional LNG gasifying process flow chart in winter.
Fig. 3 is principle schematic of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 3, a kind of LNG gasification heating and central heating system association system in winter, comprise LNG vaporizing station system and central heating system, the water-bath heater of LNG vaporizing station system connects the central heating stations of central heating system by conveyance conduit, central heating stations hot water a part is transported to water-bath heater by conveyance conduit, another part by Cemented filling to terminal temperature difference heat supply.
The utility model is LNG vaporizing station and central heating system use in conjunction in winter.Winter, when working, transports by LNG Liquefied natural gas (LNG) tank car the LNG Liquefied natural gas of coming, sends the liquid in car to LNG storage tank store for future use by mouth of unloading.Tank car boosts to about 0.6MPa by from pressurization system, unloads liquid by pressure reduction.During use, open storage tank from pressurization system, boost to about 0.6MPa, then opening storage tank liquid valve is transported in air temperature type vaporizer by LNG, the liquified natural gas (LNG) of-145 DEG C fully contacts with air, absorb the heat of air to gasify the gaseous natural gas (NG) become lower than 0 DEG C, due to temperature when natural gas temperature now still can not reach NG transmission pipeline network, therefore the NG after gasification needs to continue to heat up, enter in water-bath heater, water-bath heater is volumetric heat exchanger, be NG in tube side, shell side is the hot water of 50 DEG C carried by conveyance conduit from the central heating stations of central heating system, both are in heat exchanger after abundant heat exchange, the temperature of NG rises to more than 5 DEG C, pass through natural gas pressure regulating again, measuring apparatus and device for adding odor, final transmission & distribution use to downstream gas equipment.And air conditioning hot heat-exchange temperature be down to 43 DEG C converge with the air-conditioning backwater of user side after, return to in energy source station, complete circulation.
Claims (1)
1. a LNG gasification heating and central heating system association system in winter, it is characterized in that, comprise LNG vaporizing station system and central heating system, the water-bath heater of LNG vaporizing station system connects the central heating stations of central heating system by conveyance conduit, central heating stations hot water a part is transported to water-bath heater by conveyance conduit, another part by Cemented filling to terminal temperature difference heat supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611421.8U CN205014035U (en) | 2015-08-13 | 2015-08-13 | LNG gasification heating and central heating system combination system in winter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611421.8U CN205014035U (en) | 2015-08-13 | 2015-08-13 | LNG gasification heating and central heating system combination system in winter |
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| Publication Number | Publication Date |
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| CN205014035U true CN205014035U (en) | 2016-02-03 |
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| CN201520611421.8U Active CN205014035U (en) | 2015-08-13 | 2015-08-13 | LNG gasification heating and central heating system combination system in winter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240718A (en) * | 2016-12-26 | 2018-07-03 | 蓝焰高科（天津）燃气技术有限公司 | A kind of energy automatically supplies the driving compression type heat pump assembly of multifunction burning mechanism of qi |
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2015
- 2015-08-13 CN CN201520611421.8U patent/CN205014035U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240718A (en) * | 2016-12-26 | 2018-07-03 | 蓝焰高科（天津）燃气技术有限公司 | A kind of energy automatically supplies the driving compression type heat pump assembly of multifunction burning mechanism of qi |
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