CN203274393U - Liquefied natural gas cooling capacity recovery system - Google Patents
Liquefied natural gas cooling capacity recovery system Download PDFInfo
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- CN203274393U CN203274393U CN 201320189535 CN201320189535U CN203274393U CN 203274393 U CN203274393 U CN 203274393U CN 201320189535 CN201320189535 CN 201320189535 CN 201320189535 U CN201320189535 U CN 201320189535U CN 203274393 U CN203274393 U CN 203274393U
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- heat exchanger
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Abstract
The utility model discloses a liquefied natural gas cooling capacity recovery system. A large amount of cold energy released by vaporization of liquefied natural gas cools a refrigerating system and a freezing system so as to meet the requirement for saving energy. An outlet of a liquefied natural gas storing tank is connected with a liquefied natural gas inlet of a vaporizer. A gaseous natural gas outlet of the vaporizer is connected with a gas inlet of a heat exchanger of a refrigerating chamber. An ethanediol liquid outlet of the vaporizer is connected with a first liquid inlet of an ethanediol liquid storing tank through a first pump. A first liquid outlet of the ethanediol liquid storing tank is connected with an ethanediol liquid inlet of the vaporizer. A second liquid outlet of the ethanediol liquid storing tank is connected with a first liquid inlet of a cooling capacity heat exchanger through a second pump. A first liquid outlet of the cooling capacity heat exchanger is connected with a second liquid inlet of the ethanediol liquid storing tank. A second liquid outlet of the cooling capacity heat exchanger is connected with a secondary refrigerant inlet of a heat exchanger of a low-temperature freezing chamber through a third pump. A secondary refrigerant outlet of a refrigerating heat exchanger of a high-temperature chamber is connected with a second liquid inlet of the cooling capacity heat exchanger.
Description
Technical field
The utility model relates to a kind of cold energy of liquefied natural gas recovery system.
Background technology
Natural gas is widely used as fuel because it is clean and efficient.For the ease of transportation, often processings of liquefying of the natural gas of gaseous state, the formation liquefied natural gas.The low-temperature liquefaction natural gas storage is under the low temperature of 110K.And liquefied natural gas needs vaporization in use, will discharge a large amount of cold energy vaporizing to the normality process.
At present, liquefied natural gas discharges a large amount of cold energy to the normality process and directly puts into surrounding environment or adopt the cold energy method that once reclaims vaporizing, and directly discharging is not recycled, and has caused the waste of the energy.Adopt the method that once reclaims cold energy, although once reclaim,, still have a large amount of cold energy directly to be put into surrounding environment after once reclaiming, organic efficiency is not high.
The utility model content
The purpose of this utility model is for the technological deficiency that exists in prior art, and provide a kind of liquefied natural gas vaporization that can utilize to discharge a large amount of cold energy to refrigerating system and refrigeration system cooling, to satisfy the cold energy of liquefied natural gas recovery system of energy-conservation requirement.
For realizing that the technical scheme that the purpose of this utility model adopts is:
a kind of cold energy of liquefied natural gas recovery system, comprise the liquefied natural gas fluid reservoir, vaporizer, the ethylene glycol fluid reservoir, the cold heat exchanger, the refrigerating chamber heat exchanger, cryogenic freezing chamber heat exchanger, high temperature refrigerating chamber heat exchanger, the outlet of described liquefied natural gas fluid reservoir is connected with the liquefied natural gas import of described vaporizer, the gaseous natural gas outlet of described vaporizer is connected with the air inlet of described refrigerating chamber heat exchanger, the ethylene glycol liquid outlet of described vaporizer is connected with the first liquid import of described ethylene glycol fluid reservoir by the first pump, the first liquid outlet of described ethylene glycol fluid reservoir is connected with the ethylene glycol liquid-inlet of described vaporizer, the second liquid outlet of described ethylene glycol fluid reservoir is connected with the first liquid import of described cold heat exchanger by the second pump, the first liquid outlet of described cold heat exchanger is connected with the second liquid import of described ethylene glycol fluid reservoir, the outlet of the second liquid of described cold heat exchanger is connected by the refrigerating medium import of the 3rd pump with described cryogenic freezing chamber heat exchanger, the refrigerating medium outlet of described cryogenic freezing chamber heat exchanger is connected with the refrigerating medium import of described high temperature refrigerating chamber heat exchanger, the refrigerating medium outlet of the freezing heat exchanger of described hot room is connected with the second liquid import of described cold heat exchanger.
Compared with prior art, the beneficial effects of the utility model are:
1, cold energy of liquefied natural gas recovery system of the present utility model utilize liquefied natural gas vaporization cold respectively to refrigerating chamber and refrigerating chamber cooling, owing to additionally not needing refrigeration machine, can realize the low energy consumption of refrigeration system, reach energy-conservation purpose.This patent adopts repeatedly cold energy recovery method, has improved the cold energy organic efficiency, has reduced energy waste.
2, cold recovery cooling system of the present utility model is respond well, is conducive to food fresh keeping.
Description of drawings
Figure 1 shows that the schematic diagram of a kind of cold energy of liquefied natural gas recovery system of the utility model.
In figure: 1. liquefied natural gas air accumulator, 2. vaporizer, 3. refrigerating chamber heat exchanger, 4. the first pump, 5. ethylene glycol fluid reservoir, 6. the second pump, 7. cold heat exchanger, 8. the 3rd pump, 9. cryogenic freezing chamber heat exchanger, 10. high temperature refrigerating chamber heat exchanger.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
the schematic diagram of a kind of cold energy of liquefied natural gas recovery system of the utility model as shown in Figure 1, comprise liquefied natural gas fluid reservoir 1, vaporizer 2, ethylene glycol fluid reservoir 5, cold heat exchanger 7, refrigerating chamber heat exchanger 3, cryogenic freezing chamber heat exchanger 9, high temperature refrigerating chamber heat exchanger 10, the outlet of described liquefied natural gas fluid reservoir 1 is connected with the liquefied natural gas import of described vaporizer 2, the gaseous natural gas outlet of described vaporizer 2 is connected with the air inlet of described refrigerating chamber heat exchanger 3, the ethylene glycol liquid outlet of described vaporizer 2 is connected with the first liquid import of described ethylene glycol fluid reservoir 5 by the first pump 4, the first liquid outlet of described ethylene glycol fluid reservoir 5 is connected with the ethylene glycol liquid-inlet of described vaporizer 2, the second liquid outlet of described ethylene glycol fluid reservoir 5 is connected with the first liquid import of described cold heat exchanger 7 by the second pump 6, the first liquid outlet of described cold heat exchanger 7 is connected with the second liquid import of described ethylene glycol fluid reservoir 5, the outlet of the second liquid of described cold heat exchanger 7 is connected by the refrigerating medium import of the 3rd pump 8 with described cryogenic freezing chamber heat exchanger 9, the refrigerating medium outlet of described cryogenic freezing chamber heat exchanger 9 is connected with the refrigerating medium import of described high temperature refrigerating chamber heat exchanger 10, the refrigerating medium outlet of the freezing heat exchanger 10 of described hot room is connected with the second liquid import of described cold heat exchanger 7.
Wherein, described the first pump 4, the second pump 6 and the 3rd pump 8 are cryogenic liquid pump.
Liquefied natural gas out enters vaporizer 2 from liquefied natural gas fluid reservoir 1, carries out heat exchange with ethylene glycol solution, becomes gaseous natural gas, then enters refrigerating chamber heat exchanger 3, absorbs the refrigerating chamber heat, and temperature further rises.Ethylene glycol solution and liquefied natural gas are sent into ethylene glycol fluid reservoir 5 through the first pump 4 after the interior heat exchange of vaporizer 2, mix with ethylene glycol solution after 7 heat exchange of cold heat exchanger, then enter vaporizer 2.The ethylene glycol solution of ethylene glycol fluid reservoir 5 enters cold heat exchanger 7 through the second pump 6 and carries out heat exchange with ethylene glycol solution through cryogenic freezing chamber heat exchanger 9 and high temperature refrigerating chamber heat exchanger 10, ethylene glycol solution after heat exchange returns to ethylene glycol fluid reservoir 5, in cold heat exchanger 7 and after the interior solution heat exchange of ethylene glycol fluid reservoir 5, ethylene glycol solution enters cryogenic freezing chamber heat exchanger 9 and high temperature refrigerating chamber heat exchanger 10 through the 3rd pump 8, carry out absorption refrigeration, then return to cold heat exchanger 7 and carry out heat exchange.
Cold energy of liquefied natural gas recovery system of the present utility model is utilized the cold of liquefied natural gas vaporization, respectively to refrigerating chamber and refrigerating chamber cooling, owing to additionally not needing refrigeration machine, can realize the low energy consumption of refrigeration system, reaches energy-conservation purpose.
The above is only preferred embodiment of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189535 CN203274393U (en) | 2013-04-16 | 2013-04-16 | Liquefied natural gas cooling capacity recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189535 CN203274393U (en) | 2013-04-16 | 2013-04-16 | Liquefied natural gas cooling capacity recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203274393U true CN203274393U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320189535 Expired - Fee Related CN203274393U (en) | 2013-04-16 | 2013-04-16 | Liquefied natural gas cooling capacity recovery system |
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| CN (1) | CN203274393U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595707A (en) * | 2014-12-30 | 2015-05-06 | 西安交通大学 | Gain recycling system of liquefied natural gas (LNG) cold energy |
| CN109751096A (en) * | 2019-02-26 | 2019-05-14 | 天津商业大学 | Combined Refrigeration and Power Supply System for Utilization of Natural Gas Residual Cooling |
| CN111141091A (en) * | 2020-01-19 | 2020-05-12 | 天津商业大学 | Refrigeration house air conditioning system for recovering liquefied natural gas cold energy |
| CN112033201A (en) * | 2020-08-24 | 2020-12-04 | 江西省天然气集团有限公司 | Liquefied natural gas cold energy recovery equipment |
-
2013
- 2013-04-16 CN CN 201320189535 patent/CN203274393U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595707A (en) * | 2014-12-30 | 2015-05-06 | 西安交通大学 | Gain recycling system of liquefied natural gas (LNG) cold energy |
| CN104595707B (en) * | 2014-12-30 | 2016-06-29 | 西安交通大学 | A Gain Recovery and Utilization System of LNG Cooling Capacity |
| CN109751096A (en) * | 2019-02-26 | 2019-05-14 | 天津商业大学 | Combined Refrigeration and Power Supply System for Utilization of Natural Gas Residual Cooling |
| CN111141091A (en) * | 2020-01-19 | 2020-05-12 | 天津商业大学 | Refrigeration house air conditioning system for recovering liquefied natural gas cold energy |
| CN112033201A (en) * | 2020-08-24 | 2020-12-04 | 江西省天然气集团有限公司 | Liquefied natural gas cold energy recovery equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20150416 |
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| EXPY | Termination of patent right or utility model |