CN113932513A - Liquefied natural gas cold energy utilization device - Google Patents
Liquefied natural gas cold energy utilization device Download PDFInfo
- Publication number
- CN113932513A CN113932513A CN202111307170.0A CN202111307170A CN113932513A CN 113932513 A CN113932513 A CN 113932513A CN 202111307170 A CN202111307170 A CN 202111307170A CN 113932513 A CN113932513 A CN 113932513A
- Authority
- CN
- China
- Prior art keywords
- liquid
- cold energy
- buffer tank
- branch pipe
- energy utilization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 208
- 239000007789 gas Substances 0.000 claims abstract description 26
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 16
- 238000009834 vaporization Methods 0.000 abstract description 4
- 230000008016 vaporization Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 19
- 239000000498 cooling water Substances 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000007599 discharging Methods 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004200 deflagration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/062—Cooling by injecting a liquid in the gas to be compressed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application discloses liquefied natural gas cold energy utilizes device, including liquid buffer tank, liquid gas heat exchanger, liquid outlet manifold and liquid return manifold, the liquid outlet of liquid buffer tank passes through liquid outlet manifold meets with the inlet of liquid gas heat exchanger, the inlet of liquid buffer tank with the liquid outlet of liquid gas heat exchanger passes through liquid return manifold meets, it has first liquid branch pipe and second liquid branch pipe to connect on the liquid outlet manifold, it has first liquid branch pipe and second liquid branch pipe to return to connect on the liquid outlet manifold. This device has following beneficial effect: the cold energy generated during the vaporization of the liquefied natural gas can be fully absorbed and utilized, and various devices of the air separation system are cooled by means of liquid, so that water is not consumed, and the energy is saved.
Description
Technical Field
The invention relates to the field of air separation equipment, in particular to a liquefied natural gas cold energy utilization device.
Background
The current air separation technology is to use air as raw materials, produce liquid oxygen, liquid nitrogen, products such as liquid argon through compression, cooling, purification, pressure boost, inflation, rectification, at the in-process of preparing above-mentioned liquefied gas, need use air separation system, nitrogen compressor and air compressor machine are the most important equipment among the air separation system, because nitrogen compressor and air compressor machine can produce a large amount of heats in the course of the work, in order to guarantee that air compressor machine and nitrogen compressor machine can operate steadily, need have the oil cooler to cool down for air compressor machine and nitrogen compressor machine, the last cooler in the middle of the air compressor machine also can produce a large amount of heats simultaneously, need cool down for last cooler in the middle of.
In order to maintain the low temperature of the oil cooler and the last cooler, the open cooling water circulation device is adopted to cool each device of the air separation system, but a large amount of water is consumed after the open cooling water circulation device is adopted to cool.
Disclosure of Invention
The invention provides a liquefied natural gas cold energy utilization device aiming at the problems.
The technical scheme adopted by the invention is as follows:
the utility model provides a liquefied natural gas cold energy utilization equipment, includes liquid buffer tank, liquid gas heat exchanger, goes out liquid house steward and returns the liquid house steward, the liquid outlet of liquid buffer tank passes through it meets with the inlet of liquid gas heat exchanger to go out the liquid house steward, the inlet of liquid buffer tank with the liquid outlet of liquid gas heat exchanger passes through it meets to return the liquid house steward, it has first liquid branch pipe and second liquid branch pipe to connect on the liquid house steward, it has first liquid branch pipe and second liquid branch pipe to return to connect on the liquid house steward.
In this device, first liquid-out branch pipe and first liquid-return branch pipe are used for connecting first oil cooler, second liquid-out branch pipe and second liquid-return branch pipe are used for connecting second oil cooler, liquid gets into first oil cooler reentrant first liquid-return branch pipe via first liquid-out branch pipe, liquid gets into second oil cooler reentrant second liquid-return branch pipe via second liquid-out branch pipe, first oil cooler and second oil cooler are used for cooling for air compressor machine and nitrogen compressor machine respectively, it has last cooler between to connect on the liquid-return manifold, get into after the liquid that leaves in the liquid-gas heat exchanger gets back the liquid manifold and get back to the liquid manifold again in last cooler between. The liquefied natural gas is required to be used in the device, and enters the liquid-gas heat exchanger to exchange heat with liquid after being vaporized (the liquefied natural gas can release a large amount of cold energy when being vaporized, so that the temperature of the natural gas is maintained at a relatively low value), then leaves the liquid-gas heat exchanger, and enters the corresponding pipeline to be recycled after leaving the liquid-gas heat exchanger.
When the device is used, low-temperature liquid firstly leaves from a liquid cache tank, then the liquid is divided into three paths, the first path of liquid enters a first oil cooler through a first liquid outlet branch pipe and then enters a liquid return main pipe and finally returns to the liquid cache tank, the second path of liquid enters a second oil cooler through a second liquid outlet branch pipe and then enters a liquid return main pipe and finally returns to the liquid cache tank, the three paths of liquid enter a liquid-gas heat exchanger to be cooled (to be subjected to heat exchange with vaporized natural gas and then enter an inter-terminal cooler, and the inter-terminal cooler is cooled and then returns to the liquid cache tank. First way liquid and second way liquid need cool down the oil cooler in the three ways liquid, the temperature is higher relatively after getting back to liquid buffer tank, third way liquid is owing to passed through liquid gas heat exchanger, fully absorb the cold energy of natural gas, even after cooling down the last cooler between, the temperature when third way liquid gets back to liquid buffer tank is still very low, so first way liquid, second way liquid and third way liquid join at liquid buffer tank after, can guarantee that the temperature of liquid is still in very low state, liquid in the liquid buffer tank can need not to carry out the cooling operation to each equipment of air-cooling system once more through the cooling directly.
In conclusion, the device can fully absorb and utilize the cold energy generated in the vaporization of the liquefied natural gas, and various devices of the air separation system are cooled by the aid of the liquid, so that water is not consumed, and the device is more energy-saving.
Optionally, the liquid outlet main pipe, the liquid return main pipe, the first liquid outlet branch pipe, the second liquid outlet branch pipe, the first liquid return main pipe and the second liquid return main pipe are all provided with valves.
Optionally, the valve is a butterfly valve.
The butterfly valve is used for adjusting the opening and closing of each pipeline.
Optionally, the device further comprises a pump, and the pump is mounted on the liquid outlet main pipe.
The pump is used for continuously pumping out the liquid in the liquid buffer tank.
Optionally, the number of the pumps is not less than two, and each pump is installed on the liquid outlet main pipe in a parallel connection mode.
The arrangement is not less than two pumps, and the pumps are installed in a parallel connection mode, so that the reliability and the stability in the liquid discharging process are improved.
Optionally, the liquid storage tank further comprises a pressure reducing valve, and the pressure reducing valve is arranged between the liquid storage tank and the pump.
The pressure reducing valve is used for reducing the pressure of the liquid after the liquid leaves the liquid buffer tank, and the liquid is reduced in pressure and then enters the pump.
Optionally, the device further comprises a check valve, and the check valve is mounted on the liquid outlet main pipe.
The check valve is arranged on the liquid outlet main pipe to avoid the phenomenon of liquid diversion.
Optionally, an ethylene glycol solution is stored in the liquid buffer tank, and nitrogen is filled in the liquid buffer tank.
The ethylene glycol solution has good fluidity, is not easy to volatilize and freeze in the use process, so the liquid adopts the ethylene glycol solution, the nitrogen gas is filled in the liquid buffer tank so as to play a role in protecting the ethylene glycol solution, and the existence of the nitrogen gas can avoid the existence of oxygen in the tank body, so the deflagration phenomenon can be avoided.
Optionally, a hole is formed in the tank top of the liquid buffer tank.
The tank top of the liquid buffer tank is provided with the hole, so that the design can ensure that the phenomenon of negative pressure and overlarge pressure cannot occur in the tank body, and liquid can smoothly enter and exit the liquid buffer tank.
The invention has the beneficial effects that: the cold energy generated during the vaporization of the liquefied natural gas can be fully absorbed and utilized, and various devices of the air separation system are cooled by means of liquid, so that water is not consumed, and the energy is saved.
Description of the drawings:
FIG. 1 is a schematic diagram of an apparatus for utilizing cold energy of liquefied natural gas.
The figures are numbered: 1. a liquid buffer tank; 2. a liquid outlet main pipe; 201. a first liquid outlet branch pipe; 202. a second liquid outlet branch pipe; 3. a liquid return header pipe; 301. a first liquid return branch pipe; 302. a second liquid return branch pipe; 4. a pump; 5. a stop valve; 6. a pressure reducing valve; 7. a check valve; 8. a liquid-gas heat exchanger; 9. a first oil cooler; 10. a second oil cooler; 11. and a last cooler.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a liquefied natural gas cold energy utilization device includes a liquid buffer tank 1, a liquid-gas heat exchanger 8, a liquid outlet header pipe 2 and a liquid return header pipe 3, wherein a liquid outlet of the liquid buffer tank 1 is connected with a liquid inlet of the liquid-gas heat exchanger 8 through the liquid outlet header pipe 2, a liquid inlet of the liquid buffer tank 1 is connected with a liquid outlet of the liquid-gas heat exchanger 8 through the liquid return header pipe 3, the liquid outlet header pipe 2 is connected with a first liquid outlet branch pipe 201 and a second liquid outlet branch pipe 202, and the liquid return header pipe 3 is connected with a first liquid return branch pipe 301 and a second liquid return branch pipe 302.
In this device, first liquid-out branch pipe 201 and first liquid-return branch pipe 301 are used for connecting first oil cooler 9, second liquid-out branch pipe 202 and second liquid-return branch pipe 302 are used for connecting second oil cooler 10, liquid gets into first oil cooler 9 via first liquid-out branch pipe 201 and reenters first liquid-return branch pipe 301, liquid gets into second oil cooler 10 via second liquid-out branch pipe 202 and reenters second liquid-return branch pipe 302, first oil cooler 9 and second oil cooler 10 are used for cooling for air compressor and nitrogen compressor respectively, last cooler 11 has been connect between on the liquid-return manifold 3, liquid that leaves in the liquid-gas heat exchanger 8 gets into after returning to liquid manifold 3 and gets into between last cooler 11 and returns to liquid-return manifold 3 again. The liquefied natural gas is required to be used in the device, and enters the liquid-gas heat exchanger 8 to exchange heat with liquid after being vaporized (the liquefied natural gas can release a large amount of cold energy when being vaporized, so that the temperature of the natural gas is maintained at a relatively low value), then leaves the liquid-gas heat exchanger 8, and enters the corresponding pipeline to be recycled after leaving the liquid-gas heat exchanger 8.
When the device is used, low-temperature liquid firstly leaves from the liquid cache tank 1, then the liquid is divided into three paths, the first path of liquid enters the first oil cooler 9 through the first liquid outlet branch pipe 201 and then enters the liquid return header pipe 3 and finally returns to the liquid cache tank 1, the second path of liquid enters the second oil cooler 10 through the second liquid outlet branch pipe 202 and then enters the liquid return header pipe 3 and finally returns to the liquid cache tank 1, the three paths of liquid enter the liquid-gas heat exchanger 8 for cooling (and exchange heat with vaporized natural gas for cooling) and then enters the last cooler 11, and the last cooler 11 is cooled and then returns to the liquid cache tank 1. First way liquid and second way liquid need cool down the oil cooler in three routes liquid, the temperature is higher relatively after getting back to liquid buffer tank 1, third way liquid is owing to passed through liquid-gas heat exchanger 8, fully absorb the cold energy of natural gas, so even after cooling down last cooler 11, the temperature when third way liquid gets back to liquid buffer tank 1 is still very low, so first way liquid, second way liquid and third way liquid join at liquid buffer tank 1 after, can guarantee that the temperature of liquid is still in very low state, liquid in the liquid buffer tank 1 can need not to carry out the cooling operation to each equipment of space subsystem once more through the cooling directly.
In conclusion, the device can fully absorb and utilize the cold energy generated in the vaporization of the liquefied natural gas, and various devices of the air separation system are cooled by the aid of the liquid, so that water is not consumed, and the device is more energy-saving.
As shown in fig. 1, the liquid-discharging system further comprises valves, and the valves are mounted on the liquid-discharging main pipe 2, the liquid-returning main pipe 3, the first liquid-discharging branch pipe 201, the second liquid-discharging branch pipe 202, the first liquid-returning main pipe 3, and the second liquid-returning main pipe 3.
As shown in fig. 1, the valve is a butterfly valve.
The butterfly valve is used for adjusting the opening and closing of each pipeline.
As shown in fig. 1, the device also comprises a pump 4, and the pump 4 is arranged on the liquid outlet main pipe 2.
The pump 4 is used for continuously pumping out the liquid in the liquid buffer tank 1.
As shown in the attached figure 1, the number of the pumps 4 is not less than two, and each pump 4 is arranged on the liquid outlet main pipe 2 in a parallel connection mode.
The arrangement is not less than two pumps 4, and the pumps 4 are installed in a parallel connection mode, so that the reliability and the stability in the liquid discharging process are improved.
As shown in fig. 1, a pressure reducing valve 6 is further included, the pressure reducing valve 6 being disposed between the liquid buffer tank 1 and the pump 4.
The pressure reducing valve 6 is used for reducing the pressure of the liquid after the liquid leaves the liquid buffer tank 1, and the liquid is reduced in pressure and then enters the pump 4.
As shown in fig. 1, the device also comprises a check valve 7, and the check valve 7 is arranged on the liquid outlet main pipe 2.
The check valve 7 is arranged on the liquid outlet main pipe 2 to avoid the phenomenon of liquid diversion.
As shown in fig. 1, a glycol solution is stored in the liquid buffer tank 1, and nitrogen is filled in the liquid buffer tank 1.
The ethylene glycol solution has good fluidity, is not easy to volatilize and freeze in the use process, so the liquid adopts the ethylene glycol solution, the nitrogen gas is filled in the liquid buffer tank so as to play a role in protecting the ethylene glycol solution, and the existence of the nitrogen gas can avoid the existence of oxygen in the tank body, so the deflagration phenomenon can be avoided.
As shown in the attached figure 1, a hole is arranged at the top of the liquid buffer tank 1.
The tank top of the liquid buffer tank 1 is provided with a hole, so that the design can ensure that the phenomenon of negative pressure and overlarge pressure cannot occur in the tank body, and the liquid can smoothly enter and exit the liquid buffer tank 1.
The following device provided in the above practical manner is an experimental device, a conventional open cooling water circulation device is used as a comparison device, a 600 ton liquid air separation system is used as an experimental object, and a temperature reduction experiment is performed on the air separation system by using the experimental device and the open cooling water circulation device respectively.
Table 1 shows the settings of the parameters of the experimental apparatus and the control apparatus during operation.
TABLE 1 required Cold loads for air compressor and Low-temperature Nitrogen compressor
In table 1, the experimental apparatus used ethylene glycol as a cooling medium, and the open-type cooling water circulation apparatus used water as a cooling medium. And table 2 shows the cooling water consumption of the open cooling water circulation device in cooling the air separation system.
TABLE 2 calculation of water consumption for open cooling water circulation devices
As shown in table 1, the power of compression was 3717kW and the end cooling temperature was 10 ℃ using an aqueous ethylene glycol solution as cooling water; water was used as cooling water for compression power 3941kW, and the final cooling temperature was 37 ℃. The former has 223kW of reduction in compression power compared with the latter, and the latter must be further cooled to 10 ℃ by an air precooling system or a refrigerating machine.
And (3) water consumption specification of a circulating cooling water system matched with the LNG cold energy air separation. The LNG cold energy air separation matched circulating cooling water system adopts a closed circulating system, and the water consumption is 0. The conventional air separation equipment is matched with an open type circulating cooling water system, the supply water temperature of circulating water is 32 ℃, the return water temperature is 40 ℃, and the consumption of the conventional circulating cooling water can be obtained according to the heat load of the air compressor as shown in table 2.
The device takes glycol solution as a cooling medium, and does not need to additionally supplement circulating water for cooling glycol, thereby saving a large amount of water resources and having obvious energy-saving and water-saving effects. The project can reduce the energy consumption by 50.5 percent and has zero consumption of fresh cooling water (991 ton/day of water consumption of an equivalent-grade air separation device). The air pre-cooling system adopts a shell-and-tube heat exchanger to replace an air cooling tower, and ethylene glycol is subjected to closed circulation cooling, so that the circulating water consumption and the possibility that entrained water in raw material air is immersed into the adsorber are reduced.
By combining the data in table 1 and table 2, it can be seen that the device can save 50% of electric energy for the open cooling water circulation device.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.
Claims (9)
1. The utility model provides a liquefied natural gas cold energy utilization equipment, its characterized in that, includes liquid buffer tank, liquid gas heat exchanger, goes out liquid house steward and returns the liquid house steward, the liquid outlet of liquid buffer tank passes through the liquid house steward is met with the inlet of liquid gas heat exchanger, the inlet of liquid buffer tank with the liquid outlet of liquid gas heat exchanger passes through return the liquid house steward and meet, it has first liquid branch pipe and second liquid branch pipe to connect on the liquid house steward.
2. The lng cold energy utilization device according to claim 1, further comprising valves, wherein the liquid outlet header pipe, the liquid return header pipe, the first liquid outlet branch pipe, the second liquid outlet branch pipe, the first liquid return header pipe and the second liquid return header pipe are provided with valves.
3. The lng cold energy utilization device of claim 2, wherein the valve is a butterfly valve.
4. The lng cold energy utilization apparatus of claim 1, further comprising a pump mounted on the tapping main.
5. The lng cold energy utilization device according to claim 4, wherein the number of the pumps is not less than two, and each of the pumps is installed in parallel on the liquid outlet header.
6. The lng cold energy utilization apparatus of claim 4, further comprising a pressure relief valve disposed between the liquid buffer tank and the pump.
7. The lng cold energy utilization device of claim 1, further comprising a check valve installed on the liquid outlet manifold.
8. The lng cold energy utilization device according to claim 1, wherein the liquid buffer tank contains glycol solution, and is filled with nitrogen.
9. The lng cold energy utilization device according to claim 8, wherein a hole is formed in the top of the liquid buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307170.0A CN113932513A (en) | 2021-11-05 | 2021-11-05 | Liquefied natural gas cold energy utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307170.0A CN113932513A (en) | 2021-11-05 | 2021-11-05 | Liquefied natural gas cold energy utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113932513A true CN113932513A (en) | 2022-01-14 |
Family
ID=79285893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111307170.0A Pending CN113932513A (en) | 2021-11-05 | 2021-11-05 | Liquefied natural gas cold energy utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113932513A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743108A (en) * | 1995-04-10 | 1998-04-28 | Cleland; Robert K. | Glycol chiller machine |
| CN103821592A (en) * | 2014-03-23 | 2014-05-28 | 辽宁石油化工大学 | LNG automobile cold energy recovery gradient utilization method and device |
| CN103954090A (en) * | 2014-04-10 | 2014-07-30 | 天津城建大学 | Cold-storage refrigeration house system capable of fully utilizing cold energy of liquefied natural gas |
| CN104859404A (en) * | 2015-05-21 | 2015-08-26 | 中国第一汽车股份有限公司 | Comprehensive LNG (liquefied natural gas) cold energy recovery and utilization system for heavy-duty commercial vehicle |
| CN109140903A (en) * | 2018-08-24 | 2019-01-04 | 邢仁钊 | A kind of space division system and air separating method using cold energy of liquefied natural gas |
-
2021
- 2021-11-05 CN CN202111307170.0A patent/CN113932513A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743108A (en) * | 1995-04-10 | 1998-04-28 | Cleland; Robert K. | Glycol chiller machine |
| CN103821592A (en) * | 2014-03-23 | 2014-05-28 | 辽宁石油化工大学 | LNG automobile cold energy recovery gradient utilization method and device |
| CN103954090A (en) * | 2014-04-10 | 2014-07-30 | 天津城建大学 | Cold-storage refrigeration house system capable of fully utilizing cold energy of liquefied natural gas |
| CN104859404A (en) * | 2015-05-21 | 2015-08-26 | 中国第一汽车股份有限公司 | Comprehensive LNG (liquefied natural gas) cold energy recovery and utilization system for heavy-duty commercial vehicle |
| CN109140903A (en) * | 2018-08-24 | 2019-01-04 | 邢仁钊 | A kind of space division system and air separating method using cold energy of liquefied natural gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101344345B (en) | Compression-absorption-diffusion combined refrigerating plant and its refrigeration cycle method | |
| CN104344479B (en) | A kind of cold storage energy-saving air conditioning system and its operation method | |
| CN106765783B (en) | Energy-saving high-precision wine cellar air conditioning system combining water cold accumulation and natural cold source | |
| CN111565543A (en) | Water-cooling natural cooling refrigerant direct cooling refrigeration system | |
| CN212274158U (en) | Double-cold-source water chilling unit refrigerating system based on indirect evaporative cooling technology | |
| CN105115079B (en) | A kind of central air-conditioning chilled water storage system | |
| US20190017712A1 (en) | High-efficiency extra-large cooling capacity series chiller in energy station | |
| CN103542590B (en) | Ammonia absorption type refrigeration system and concentration active control method thereof | |
| CN100489417C (en) | Sodium sulfocyanate-ammonia diffusion absorbing refrigerator | |
| CN106091574A (en) | Gas liquefaction device with compression heat recovery function and liquefaction method thereof | |
| CN206420178U (en) | A kind of economical cold storage refrigeration system of energy-saving safe | |
| CN212324592U (en) | Water-cooling natural cooling refrigerant direct cooling refrigeration system | |
| CN201628446U (en) | Recovery system for cold energy released in vaporization of cryogenic liquid | |
| CN209310181U (en) | A kind of multi-freezing pipe United system | |
| CN106766546A (en) | A kind of dual system circulating water cooling device | |
| CN217464063U (en) | Cold storage and precooling system of hydrogenation machine for hydrogenation station | |
| CN113932513A (en) | Liquefied natural gas cold energy utilization device | |
| CN214841826U (en) | Double-effect integrated refrigerating unit with natural cooling function | |
| CN206369396U (en) | A kind of dual system circulating water cooling device | |
| CN210089171U (en) | Dual-working-condition refrigerating system | |
| CN209978431U (en) | Adjustable energy cascade utilization cooling system | |
| CN209926639U (en) | Battery package carbon dioxide refrigerating system | |
| CN109548378B (en) | Data center cooling system and heat source tower heat pump coupling system | |
| CN203533947U (en) | Low temperature cold water system | |
| CN111442445A (en) | Double-cold-source water chilling unit refrigerating system based on indirect evaporative cooling technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 280 Xingye Road, Leidian Town, Deqing County, Huzhou City, Zhejiang Province, 313200 Applicant after: Yingde Gas Engineering (Zhejiang) Co.,Ltd. Address before: 313200 Jingyi Road, Deqing Linhang Industrial Zone, LEIDIAN Town, Deqing County, Huzhou City, Zhejiang Province Applicant before: ZHEJIANG ZHIHAI CHEMICAL EQUIPMENT ENGINEERING Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220114 |