CN206626397U - A kind of LNG cryogenic energy utilization systems for workshop cooling - Google Patents
A kind of LNG cryogenic energy utilization systems for workshop cooling Download PDFInfo
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- CN206626397U CN206626397U CN201720359661.2U CN201720359661U CN206626397U CN 206626397 U CN206626397 U CN 206626397U CN 201720359661 U CN201720359661 U CN 201720359661U CN 206626397 U CN206626397 U CN 206626397U
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- lng
- outlet
- superheater
- workshop
- natural gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The utility model discloses a kind of LNG cryogenic energy utilization systems for workshop cooling, including LNG transfer system and cold energy of liquefied natural gas recovery system with the outlet connection of LNG fluid reservoirs；LNG transfer system includes the condenser with LNG fluid reservoirs outlet connection, and the natural gas runner outlet of condenser is connected with the natural gas runner entrance of superheater, and the natural gas runner outlet of superheater is connected with gas user；Cold energy of liquefied natural gas recovery system includes intermediate medium cold accumulating pond, the outlet of intermediate medium cold accumulating pond is connected by heat medium flow channel entrance of crossing of the pipeline through cryogenic pump and superheater, cross heat medium flow channel entrance of the heat medium flow channel outlet through evaporator and condenser of crossing of superheater connects, the heat medium flow channel outlet of crossing of condenser is connected by pipeline and the refrigeration entrance in workshop, and the outlet in workshop is connected by pipeline with the entrance of intermediate medium cold accumulating pond.Heat exchanger effectiveness is high, and capacity usage ratio is big；LNG colds are changed and stored, safety coefficient is high, and effect is good.
Description
Technical field
It the utility model is related to LNG Technology field, and in particular to a kind of LNG colds profit for workshop cooling
Use system.
Background technology
At present, liquefied natural gas (LNG) is the liquid that natural gas is cooled to -162 DEG C or so condensations, is natural gas storing
With the principal mode of transport.With the continuous growth of energy demand, the development of LNG industry by optimize China energy resource structure,
Effectively solve the energy safety of supply, the two fold problem of ecological environmental protection, realize that economic and society sustainable development plays
Important effect.At present, gas industry is risen and continued to develop successively in countries in the world.
In recent years, natural gas gradually develops into resident, and application is more and more extensive.Because LNG is as fuel, use
Shi Bixu is to reach more than 0 DEG C, so have to LNG gasification, but LNG can produce substantial amounts of cold in gasification,
LNG cold energy value reaches 837kJ/kg, if do not recycled to these colds, will result in a large amount of wastes of the energy.Now, car
Between temperature it is larger by surrounding environment influence, existing Refrigeration Technique is mechanical refrigeration mostly, it is necessary to which power consumption, cost are high.How
LNG cold energy is stored using reasonable manner, and workshop refrigeration can be applied to, is an energy-saving and environment-friendly technology.
Utility model content
The defects of the purpose of this utility model exists aiming at prior art, there is provided a kind of reasonable in design, heat is handed over
Efficiency high is changed, capacity usage ratio is big；Deposited by effectively being changed LNG colds using intermediate medium and the excessively physical property of thermal medium
Storage, safety coefficient is high, the good LNG cryogenic energy utilization systems for being used for workshop cooling of using effect.
The technical solution of the utility model is：A kind of LNG cryogenic energy utilization systems for workshop cooling, including stored up with LNG
The LNG transfer system of the outlet connection of flow container and the cold energy of liquefied natural gas being connected with LNG transfer system
Recovery system, the inlet and outlet of the cold energy of liquefied natural gas recovery system are connected with the inlet and outlet in workshop respectively；
The LNG transfer system includes the condenser with LNG fluid reservoirs outlet connection, the day of the condenser
Right flow channel outlet is connected with the natural gas runner entrance of superheater, the natural gas runner outlet of the superheater and gas user
Connection；
The cold energy of liquefied natural gas recovery system includes intermediate medium cold accumulating pond, the outlet of the intermediate medium cold accumulating pond
Connected by cross heat medium flow channel entrance of the pipeline through cryogenic pump and superheater, the superheater crosses heat medium flow channel outlet warp
Evaporator is connected with workshop entrance, and the evaporator links together with condenser, and the outlet in the workshop is by pipeline with
Between medium cold accumulating pond entrance connection.
The LNG cryogenic energy utilizations system also includes back-up system, and the back-up system, which includes exporting with LNG fluid reservoirs, to be connected
Air temperature vaporizer, the outlet of the air-heating type gasifier is connected with gas user.
Filter is additionally provided between the intermediate medium cold accumulating pond and cryogenic pump.
Priming device and bleeder are housed on the cold accumulating pond.
The evaporator and the tube shell type structure that condenser is integral type, the superheater is plank frame.
Pressure gauge, temperature are respectively equipped between the LNG fluid reservoirs and air temperature vaporizer, between the condenser and superheater
Degree meter, flowmeter and stop valve.
Intermediate medium in the evaporator is propane, and freezing point is -187.6 DEG C, and boiling point is -42 DEG C；It is situated between among described
Thermal medium of crossing in matter cold accumulating pond is 60% ethylene glycol solution, and freezing point is -48.3 DEG C, and boiling point is 197.3 DEG C.
The utility model compared with prior art, has advantages below：Using pipe type heat transfer and plate-type heat-exchange, structure is set
Meter is reasonable, and heat exchanger effectiveness is high, and capacity usage ratio is big；Physical property effectively using intermediate medium and thermal medium excessively is cold by LNG
Amount conversion storage, safety coefficient is high, and using effect is good.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1st, LNG fluid reservoirs, 2, air-heating type gasifier, 3, gas user, 4, condenser, 5, evaporator, 6, overheat
Device, 7, workshop, 8, intermediate medium cold accumulating pond, 9, filter, 10, cryogenic pump.
Embodiment
Here is that the utility model is further illustrated in conjunction with the accompanying drawings and embodiments.
Reference picture 1, a kind of LNG cryogenic energy utilization systems for workshop cooling, including be connected with the outlet of LNG fluid reservoirs 1
LNG transfer system and the cold energy of liquefied natural gas recovery system that is connected with LNG transfer system.
Wherein, LNG transfer system includes condenser 4, superheater 6 and gas user 3, condenser 4, superheater 6
Composition LNG gasification loop is sequentially connected with gas user 3.Condenser 4 is connected with the outlet of LNG fluid reservoirs 1, the day of condenser 4
Right flow channel outlet is connected with the natural gas runner entrance of superheater 6, and natural gas runner outlet and the gas user of superheater 6 connect
Connect.So liquefied natural gas is flowed out by the outlet of LNG fluid reservoirs 1, into condenser 4 and overheat Medium Exchange heat, LNG combustions
Expect in condensed device 4 with after propane vapor heat exchange, LNG temperature is down to -40 DEG C by -162 DEG C, is then overheated via superheater 6
Temperature rises to 0 DEG C by -40 DEG C afterwards, is used for gas user.
Above-mentioned cold energy of liquefied natural gas recovery system includes intermediate medium cold accumulating pond 8, the mistake in intermediate medium cold accumulating pond 8
Thermal medium is 60% ethylene glycol solution, and freezing point is -48.3 DEG C, and boiling point is 197.3 DEG C.The outlet of intermediate medium cold accumulating pond 8 passes through pipe
Road is connected through cryogenic pump 10 with the heat medium flow channel entrance of crossing of superheater 6, and the heat medium flow channel of crossing of superheater 6 is exported through evaporator
5 are connected with the refrigeration entrance in workshop 7, and the outlet in workshop 7 is connected by pipeline with the entrance of intermediate medium cold accumulating pond 8.Above-mentioned steaming
Intermediate medium in hair device 5 is propane, and freezing point is -187.6 DEG C, and boiling point is -42 DEG C.Specially：60% ethylene glycol solution is therefrom
Between medium cold accumulating pond 8 outlet outflow after, be introduced into superheater 6 and exchanged heat with natural gas, then ethylene glycol solution entrance
The tube side of evaporator 5 evaporates with the propane heat exchange in the shell side of evaporator 5, make the propane vapor in evaporator 5 enter condenser 4 with
LNG in tube side exchanges heat, and enters after ethylene glycol solution absorption LNG cold in workshop 7 and is cooled, enters back into intermediate medium storage
In cold drop 8, repetitive cycling in superheater 6 is pressed into by cryogenic pump 10 via filter 9.
When specifically used, in the condensed device 4 of LNG fuel with after propane vapor heat exchange, LNG temperature is down to by -162 DEG C -
40 DEG C, temperature rises to 0 DEG C by -40 DEG C after NG overheats via superheater 6, is used for gas user.Centre in the shell side of evaporator 5
Medium propane evaporates under the heating of tube side ethylene glycol solution, and gas rises in condenser 4 and exchanged heat with the LNG in tube side.
In addition, the ethylene glycol solution in superheater 6 exchanges heat with NG, inlet temperature is 15 DEG C, and outlet temperature is 10 DEG C, second two
The propane heat exchange that alcoholic solution enters in the tube side and shell side of evaporator 5, outlet temperature are -10 DEG C.And the second passed through in evaporator 5
Glycol solution enters workshop 7, realizes cooling, enters back into intermediate medium cold accumulating pond 8, pressed via filter 9 by cryogenic pump 10
Enter superheater 6.Ethylene glycol solution repeats the heat release in superheater, condenser, and Posterior circle use of being absorbed heat in workshop 7.
In addition, LNG cryogenic energy utilizations system also includes back-up system, back-up system includes and the outlet of LNG fluid reservoirs 1 connection
Air temperature vaporizer 2, the outlet of air-heating type gasifier 2 are connected with gas user 3.
Priming device and bleeder are housed on intermediate medium cold accumulating pond 8, can add or discharge ethylene glycol solution.Condenser
4th, evaporator 5 is tube shell type structure, and superheater 6 is plank frame.Between LNG fluid reservoirs 1 and air temperature vaporizer 2, condensing
Pressure gauge, thermometer, flowmeter and stop valve are respectively equipped between device 4 and superheater 6.Set as needed in whole pipe-line system
There are flowmeter, thermometer, pressure gauge.
Intermediate medium in above-mentioned evaporator 5, condenser 4 is phase change medium.Intermediate medium needed for the utility model
Be with LNG direct heat transfers, therefore the freezing point of intermediate medium should be as far as possible low, and boiling point should try one's best height, otherwise in heat transfer process,
Intermediate medium easily solidifies and blocks pipeline.In addition, for recovery LNG as much as possible cold energy, latent heat of phase change should be selected
Larger medium is as intermediate medium.In line with safely, be easy to get, durable, to ozone layer without destruction（ODP values are zero）, greenhouse
Effect is small（GWP value is as small as possible）Principle, described phase change medium preferably propane（R290）.
Above-mentioned thermal medium of crossing is without phase change medium.Thermal medium of crossing needed for the utility model mainly receives NG transmission
The cold come, because the temperature difference reduces, so the requirement to medium is not very high, it can use without phase change medium, in view of in evaporator
Cooling capacity exchanging is to carry out at low temperature, and medium freezing point is still low, and the no phase change medium preferably 60% ethylene glycol is water-soluble
Liquid.
Above-mentioned evaporator 5, the pipe type heat transfer structure that condenser 4 is integral type, superheater 6 is plank frame.In utilization
Between the evaporation of medium, condensation and tube side LNG exchange heat, heat exchanger effectiveness is high, and capacity usage ratio is big；Superheater 6 is plank frame, is adopted
Used thermal medium and NG countercurrent flow, efficiency greatly improves, reasonable in design.
The cold during LNG gasification is store in 60% ethylene glycol solution in above-mentioned evaporator 5 out.This practicality
The new affected by hot loading of middle workshop 7 has a great influence, and when workshop temperature is more than 25 DEG C, LNG will be cold in LNG in condenser 4
Amount is stored in intermediate medium propane, and propane and 60% ethylene glycol solution carry out heat exchange, 60% ethylene glycol solution in evaporator 5
Cooled into workshop 7, finally enter back into intermediate medium cold accumulating pond 8, overheat is pressed into by cryogenic pump 10 via filter 9
Device, to meet the refrigeration demand of different requirements.
The utility model is divided into three links：First link is that LNG is gasified directly for combustion gas by air-heating type gasifier 2
Family uses；Second link is LNG by entering gas user after condenser 4, superheater 6；3rd link was thermal medium cold-storage
And cold energy Releasing loop.So, requirement of the gas user to fuel gas temperature had both been met, and can maintains the temperature in workshop, real
Existing workshop cooling, effectively utilizes LNG colds.
The utility model is not limited to above-mentioned embodiment, in those skilled in the art's possessed knowledge,
It can also be made a variety of changes on the premise of the utility model aims are not departed from, the content after change still falls within the utility model
Protection domain.
Claims (7)
- A kind of 1. LNG cryogenic energy utilization systems for workshop cooling, it is characterised in that：It is connected including the outlet with LNG fluid reservoirs LNG transfer system and the cold energy of liquefied natural gas recovery system that is connected with LNG transfer system, the liquid The inlet and outlet for changing natural gas cold energy recovery system are connected with the inlet and outlet in workshop respectively；The LNG transfer system includes the condenser with LNG fluid reservoirs outlet connection, the natural gas of the condenser The natural gas runner entrance of runner exit and superheater connects, and natural gas runner outlet and the gas user of the superheater connect Connect；The cold energy of liquefied natural gas recovery system includes intermediate medium cold accumulating pond, and the outlet of the intermediate medium cold accumulating pond passes through Cross heat medium flow channel entrance of the pipeline through cryogenic pump and superheater connects, and the superheater crosses heat medium flow channel outlet through evaporation Device is connected with workshop entrance, and the evaporator links together with condenser, and the outlet in the workshop is situated between by pipeline with middle The entrance connection of matter cold accumulating pond.
- A kind of 2. LNG cryogenic energy utilization systems for workshop cooling according to claim 1, it is characterised in that：The LNG Cryogenic energy utilization system also includes back-up system, and the back-up system includes the air temperature vaporizer with LNG fluid reservoirs outlet connection, institute The outlet for stating air-heating type gasifier is connected with gas user.
- A kind of 3. LNG cryogenic energy utilization systems for workshop cooling according to claim 1, it is characterised in that：In described Between be additionally provided with filter between medium cold accumulating pond and cryogenic pump.
- A kind of 4. LNG cryogenic energy utilization systems for workshop cooling according to claim 1, it is characterised in that：In described Between priming device and bleeder are housed on medium cold accumulating pond.
- A kind of 5. LNG cryogenic energy utilization systems for workshop cooling according to claim 1, it is characterised in that：The steaming Send out device and the tube shell type structure that condenser is integral type, the superheater is plank frame.
- A kind of 6. LNG cryogenic energy utilization systems for workshop cooling according to claim 2, it is characterised in that：The LNG Pressure gauge, thermometer, flowmeter are respectively equipped between fluid reservoir and air temperature vaporizer, between the condenser and superheater and is cut Only valve.
- A kind of 7. LNG cryogenic energy utilization systems for workshop cooling according to claim 1, it is characterised in that：The steaming Intermediate medium in hair device is propane, and freezing point is -187.6 DEG C, and boiling point is -42 DEG C；Mistake in the intermediate medium cold accumulating pond Thermal medium is 60% ethylene glycol solution, and freezing point is -48.3 DEG C, and boiling point is 197.3 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720359661.2U CN206626397U (en) | 2017-04-07 | 2017-04-07 | A kind of LNG cryogenic energy utilization systems for workshop cooling |
Applications Claiming Priority (1)
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| CN201720359661.2U CN206626397U (en) | 2017-04-07 | 2017-04-07 | A kind of LNG cryogenic energy utilization systems for workshop cooling |
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| CN206626397U true CN206626397U (en) | 2017-11-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895255A (en) * | 2017-04-07 | 2017-06-27 | 山东长凯石油科技股份有限公司 | A kind of LNG cryogenic energy utilization systems for workshop cooling |
| CN108224081A (en) * | 2018-01-22 | 2018-06-29 | 利华能源储运股份有限公司 | A kind of slot type gasifier system |
| CN108548447A (en) * | 2018-05-08 | 2018-09-18 | 哈尔滨理工大学 | A kind of nano-fluid is the circulating heat exchange system of cooling working medium |
| CN109708000A (en) * | 2019-02-25 | 2019-05-03 | 北方工业大学 | A kind of L-CH2 type hydrogenation stations heat management system |
-
2017
- 2017-04-07 CN CN201720359661.2U patent/CN206626397U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895255A (en) * | 2017-04-07 | 2017-06-27 | 山东长凯石油科技股份有限公司 | A kind of LNG cryogenic energy utilization systems for workshop cooling |
| CN106895255B (en) * | 2017-04-07 | 2023-09-29 | 山东德裕石油装备有限公司 | LNG cold energy utilization system for cooling workshop |
| CN108224081A (en) * | 2018-01-22 | 2018-06-29 | 利华能源储运股份有限公司 | A kind of slot type gasifier system |
| CN108224081B (en) * | 2018-01-22 | 2023-11-07 | 利华能源储运股份有限公司 | Trough gasifier system |
| CN108548447A (en) * | 2018-05-08 | 2018-09-18 | 哈尔滨理工大学 | A kind of nano-fluid is the circulating heat exchange system of cooling working medium |
| CN109708000A (en) * | 2019-02-25 | 2019-05-03 | 北方工业大学 | A kind of L-CH2 type hydrogenation stations heat management system |
| CN109708000B (en) * | 2019-02-25 | 2020-08-18 | 北方工业大学 | L-CH2 type hydrogen station heat management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: The 257400 Shandong Development Zone, Lijin County of Dongying province eleven City Road south of the Taiping River West Patentee after: Shandong long Kai Petroleum Technology Co., Ltd. Address before: The 257400 Shandong Development Zone, Lijin County of Dongying province eleven City Road South, Taiping River West Patentee before: Shandong long Kai petroleum Polytron Technologies Inc |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: LNG cooling capacity utilization system for workshop cooling Effective date of registration: 20181204 Granted publication date: 20171110 Pledgee: Bank of Qingdao Co of Dongying Lijin branch Pledgor: Shandong long Kai Petroleum Technology Co., Ltd. Registration number: 2018370010130 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190306 Granted publication date: 20171110 Pledgee: Bank of Qingdao Co of Dongying Lijin branch Pledgor: Shandong long Kai Petroleum Technology Co., Ltd. Registration number: 2018370010130 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: LNG cooling capacity utilization system for workshop cooling Effective date of registration: 20190313 Granted publication date: 20171110 Pledgee: Bank of Qingdao Co of Dongying Lijin branch Pledgor: Shandong long Kai Petroleum Technology Co., Ltd. Registration number: 2019370010025 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190917 Address after: 257 400 No. 102 Lishi Road, Lijin County, Dongying City, Shandong Province Patentee after: Dongying Xingsheng Special Equipment Technology Co., Ltd. Address before: The 257400 Shandong Development Zone, Lijin County of Dongying province eleven City Road south of the Taiping River West Patentee before: Shandong long Kai Petroleum Technology Co., Ltd. |