CN108266962A - Utilize the natural gas liquefaction device of night electricity - Google Patents
Utilize the natural gas liquefaction device of night electricity Download PDFInfo
- Publication number
- CN108266962A CN108266962A CN201810037878.0A CN201810037878A CN108266962A CN 108266962 A CN108266962 A CN 108266962A CN 201810037878 A CN201810037878 A CN 201810037878A CN 108266962 A CN108266962 A CN 108266962A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- low temperature
- natural gas
- room temperature
- gas liquefaction
- 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.)
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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
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
Abstract
The present invention relates to a kind of natural gas liquefaction devices using night electricity.Require have larger cold-storage space and more cool storage material using the Refrigeration Technique of night cheap electric power, one-time investment is larger, thus limits its application.The composition of the present invention includes：Room temperature pond (1), the room temperature pond connects room temperature water pump (2) by pipeline, the room temperature water pump connects refrigeration unit (3) by pipeline, the refrigeration unit connects low temperature pond (4) by pipeline, the low temperature pond connects low temperature water pump (5) by pipeline, the low temperature water pump connects natural gas liquefaction device (6) by pipeline, and the natural gas liquefaction device passes through the pipeline connection room temperature pond.The present invention is used to carry out natural gas liquefaction using night electricity.
Description
Technical field
The present invention relates to a kind of natural gas liquefaction devices using night electricity.
Background technology
Natural gas is a kind of important energy source, is referred to as clean energy resource due to its environmental pollution is few.Liquefied natural gas (LNG)
Volume there was only the 1/625 of same gas volume, thus after its liquefaction, storage and transportation cost can be reduced, and list can be improved
The combustion value of position volume.Since the last century, the application that the natural gas liquefaction flow of various different types obtains, power consumption constantly drop
Low, the potentiality of energy-saving aspect are less and less.And the electricity charge account for more than 70% total production cost in liquefied natural gas processing cost.
Most areas use temporally disjunction with different electricity price charging modes in world wide, and the night electricity charge are very cheap.Profit
Extra cold is produced with the night certain equipment of cheap power start to be stored up, by this part, cold is released again when the electricity charge are higher in the daytime
It releases to achieve the purpose that reduce operation power charge.Require have larger cold-storage space using the Refrigeration Technique of night cheap electric power
With more cool storage material, one-time investment is larger, thus limits its application.
Invention content
The object of the present invention is to provide a kind of natural gas liquefaction device using night electricity, good reliability, investment it is small,
Operating cost is low.
Above-mentioned purpose is realized by following technical scheme：
Using the natural gas liquefaction device of night electricity, composition includes：Make the room temperature pond of fire cistern, described is normal
Heated pool connects room temperature water pump by pipeline, and the room temperature water pump connects refrigeration unit, the refrigeration unit by pipeline
The low temperature pond of water at low temperature for storing work schedule and taking is connected by pipeline, the low temperature pond is 3~5 DEG C of inlet temperature
Low temperature pond, the low temperature pond connect low temperature water pump by pipeline, and the low temperature water pump connects natural gas by pipeline
Liquefying plant, the natural gas liquefaction device pass through the pipeline connection room temperature pond.
Advantageous effect：
1. the present invention is ingenious to be utilized the characteristics of natural gas liquefaction plant is equipped with fire cistern, increased two cisterns
Fire cistern can be doubled as, does not increase investment and floor space separately, night cheap electric power, which had not only been utilized, to be reduced operating cost but also do not increase
Add too many.Solve the disadvantage that the cheap electric refrigeration flow investment of other utilization night is larger.Handpiece Water Chilling Units are in night trough electricity
It works during valency, is shut down in par and wave crest electricity price, the water at low temperature that work schedule takes is in addition to feeding mechanism, the storage of extra cold water
Into low temperature pond.The cold water supply liquefying plant that handpiece Water Chilling Units will be accumulated in low temperature pond again when shutting down.By device heating
Normal-temperature water, which is flowed in room temperature pond, to be accumulated.Normal-temperature water is conveyed to handpiece Water Chilling Units by handpiece Water Chilling Units with room temperature water pump again during working.
2. the economic benefit of investment of the present invention is analyzed as follows：
Note:Power consumption refers to the expense saved after night electricity technology is used to convert to reduce unit consumption during power consumption.
Calculation basis:1.LNG yield 186kmol/h (daily 100,000 side), raw natural gas pressure 5.0Mpa；
2. electricity price:Average price 0.6 yuan/kwh, daily 22 up to next day it is early 6 when 0.2 yuan of paddy electricity valency.
Description of the drawings
Attached drawing 1 is the structure diagram of the present invention.
Specific embodiment
Embodiment 1：
Using the natural gas liquefaction device of night electricity, composition includes：Room temperature pond 1, the room temperature pond pass through
Pipeline connection room temperature water pump 2, the room temperature water pump connects refrigeration unit 3 by pipeline, and the refrigeration unit passes through pipeline
Low temperature pond 4 is connected, the low temperature pond connects low temperature water pump 5 by pipeline, and the low temperature water pump is connected by pipeline
Natural gas liquefaction device 6, the natural gas liquefaction device pass through the pipeline connection room temperature pond.
The course of work：
The normal-temperature water being accumulated in during trough electricity price in room temperature pond is entered from pipeline by room temperature Pump Suction enters cold water by pipeline
Unit, enters low temperature pond after normal-temperature water is cooled to 3~5 DEG C by room temperature in handpiece Water Chilling Units through pipeline, and liquefying plant is continuous
Water at low temperature needed for operation, which through pipeline enters low temperature water pump and is transported to natural gas liquefaction device, to be pre-chilled；Extra water at low temperature stores
Product is in low temperature pond；Water at low temperature is flowed to by pipeline in room temperature pond after room temperature is heated in natural gas liquefaction device, wave
Start room temperature water pump during paddy electricity valency and handpiece Water Chilling Units produce water at low temperature, so recycle.Two pool volumes depend on trough electricity price
Duration.Entering to add ethylene glycol or other antifreezing agents etc. in water can make low temperature coolant-temperature gage be reduced to -35 DEG C without freezing, theoretical
Upper temperature is lower, and operation power charge is lower, but due to antifreezing agent higher price and quantity is added, and one-time investment is larger, therefore whether
Addition antifreezing agent should be determined depending on concrete condition.
Claims (1)
1. a kind of natural gas liquefaction device using night electricity, composition includes：Make the room temperature pond of fire cistern, feature
It is：The room temperature pond connects room temperature water pump by pipeline, and the room temperature water pump connects refrigeration unit by pipeline, described
Refrigeration unit the low temperature pond of water at low temperature that takes of storage work schedule is connected by pipeline, the low temperature pond is entrance temperature
The low temperature pond of 3~5 DEG C of degree, the low temperature pond connect low temperature water pump by pipeline, and the low temperature water pump passes through pipeline
Natural gas liquefaction device is connected, the natural gas liquefaction device passes through the pipeline connection room temperature pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037878.0A CN108266962A (en) | 2018-01-16 | 2018-01-16 | Utilize the natural gas liquefaction device of night electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037878.0A CN108266962A (en) | 2018-01-16 | 2018-01-16 | Utilize the natural gas liquefaction device of night electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108266962A true CN108266962A (en) | 2018-07-10 |
Family
ID=62775581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037878.0A Pending CN108266962A (en) | 2018-01-16 | 2018-01-16 | Utilize the natural gas liquefaction device of night electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108266962A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838568A (en) * | 2010-03-03 | 2010-09-22 | 哈尔滨深冷气体液化设备有限公司 | Natural gas liquefaction process by utilizing night electricity |
| CN202359087U (en) * | 2011-09-24 | 2012-08-01 | 辽宁哈深冷气体液化设备有限公司 | Natural gas liquefaction equipment using night electric power |
-
2018
- 2018-01-16 CN CN201810037878.0A patent/CN108266962A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838568A (en) * | 2010-03-03 | 2010-09-22 | 哈尔滨深冷气体液化设备有限公司 | Natural gas liquefaction process by utilizing night electricity |
| CN202359087U (en) * | 2011-09-24 | 2012-08-01 | 辽宁哈深冷气体液化设备有限公司 | Natural gas liquefaction equipment using night electric power |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180710 |
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| WD01 | Invention patent application deemed withdrawn after publication |