CN108273364A - A kind of natural gas filling station instrument wind cold energy drying system and technique - Google Patents
A kind of natural gas filling station instrument wind cold energy drying system and technique Download PDFInfo
- Publication number
- CN108273364A CN108273364A CN201810184887.2A CN201810184887A CN108273364A CN 108273364 A CN108273364 A CN 108273364A CN 201810184887 A CN201810184887 A CN 201810184887A CN 108273364 A CN108273364 A CN 108273364A
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- China
- Prior art keywords
- shell
- tube
- heat exchanger
- bog
- forecooler
- 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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Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000001035 drying Methods 0.000 title claims abstract description 28
- 239000003345 natural gas Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 235000014171 carbonated beverage Nutrition 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of natural gas filling station instrument wind cold energy drying system and techniques, including air compressor machine, bushing type forecooler, shell-and-tube heat exchanger, steam-water separator and the temporary storage tanks of BOG, the outlet of air compressor machine is connected with the outer tube inlet of bushing type forecooler, the outer tube outlet of bushing type forecooler is connected with the shell side inlet of shell-and-tube heat exchanger, the shell-side outlet of shell-and-tube heat exchanger is connected with steam-water separator entrance, the gas vent of steam-water separator is connected by compressed air line with the inner tube inlet of bushing type forecooler, the outlet of the temporary storage tanks of BOG is connected by BOG pipelines with the tube-side inlet of shell-and-tube heat exchanger, the tube side outlet of shell-and-tube heat exchanger is connected by BOG pipelines with BOG retracting devices.Present system structure is more succinct, realizes that energy-saving and emission-reduction, compatible existing natural gas station structure reduce system reform cost by being effectively utilized existing boil-off gas cold energy compared to legacy system.
Description
Technical field
The present invention relates to one kind being air-dried technology, and in particular to a kind of natural gas filling station instrument wind cold energy drying system
And technique.
Background technology
Natural gas is widely used in all trades and professions as a kind of important clean energy resource.Natural gas filling station main services
In automobile industry, air source is divided into compressed natural gas (Compressed Natural Gas, abbreviation CNG) and liquefied natural gas
(Liquefied Natural Gas, abbreviation LNG).
In natural gas filling station, compressed air i.e. instrument wind is needed to purge or drive instrument and valve.Instrument
Wind has to pass through " drying ", primarily to improving aridity and cleanliness factor, protective meter and valve are not corroded, while being also
It prevents from freezing.Therefore, natural gas filling station usually installs instrument wind drying machine additional.
Traditional instrument wind drying machine generally use " vapour compression refrigeration+steam-water separator " mode first uses steam
It compresses refrigeration cycle and generates cold energy, compressed air temperature is made to be reduced to dew point, to which moisture is precipitated；Then pass through steam-water separation
Device detaches the moisture being precipitated in compressed air, to obtain dry compressed air.This traditional instrument wind drying machine knot
Structure is heavy, and refrigerant is refrigerant, needs refrigeration compressor, power consumption big.
Meanwhile will produce a large amount of boil-off gas (Boil-off Gas, abbreviation BOG) in natural gas filling station operational process,
Contain a large amount of cold energy.The cold energy of BOG is essentially from two approach：First, a large amount of cold energy that BOG is generated when generating, that is, vaporize
Cold energy caused by latent heat；Second is that BOG self-temperatures are very low, it may have a large amount of cold energy, i.e. sensible heat cold energy caused by low temperature. BOG
Cold energy waste is serious, is directly discharged in air mostly.
Invention content
The technical issues of solution：For structure bulky of the existing technology, needs refrigeration compressor power consumption big etc. and ask
Topic, a kind of natural gas filling station instrument wind cold energy drying system of present invention offer and technique, directly utilize BOG cold energy to instrument wind
Cooling and drying is carried out, to substitute traditional vapour compression refrigeration drying system, the system optimization is succinct and energy-saving and emission-reduction.
Technical solution：A kind of natural gas filling station instrument wind cold energy drying system, including air compressor machine, bushing type forecooler,
Shell-and-tube heat exchanger, steam-water separator and the temporary storage tanks of BOG, the outlet of air compressor machine are connected with the outer tube inlet of bushing type forecooler,
The outer tube outlet of bushing type forecooler is connected with the shell side inlet of shell-and-tube heat exchanger, the shell-side outlet and vapour of shell-and-tube heat exchanger
Separator entrance is connected, the inner tube inlet that the gas vent of steam-water separator passes through compressed air line and bushing type forecooler
It is connected, the outlet of the temporary storage tanks of BOG is connected by BOG pipelines with the tube-side inlet of shell-and-tube heat exchanger, the pipe of shell-and-tube heat exchanger
Journey outlet is connected by BOG pipelines with BOG retracting devices.
A kind of natural gas filling station instrument wind cold energy drying process, is handled based on above system, is included the following steps：
Step 1：Air enter air compressor machine after overcompression is pressurized temperature increase, through tube inlet outside bushing type forecooler into
Enter into bushing type forecooler and exchange heat with the low temperature drying compressed air in bushing type forecooler inner tube, temperature reduces；
Step 2：Outflow exported by bushing type forecooler outer tube according to step 1 treated air and through pipe shell type heat exchange
The shell side inlet of device enters in shell-and-tube heat exchanger, meanwhile, tube sides of the BOG through shell-and-tube heat exchanger in the temporary storage tanks of BOG enters
It mouthful enters in shell-and-tube heat exchanger, treated that air exchanges heat with BOG in shell-and-tube heat exchanger for step 1, makes air themperature
It is further decreased to dew-point temperature, the liquid water in air is made to be precipitated；
Step 3：Shell-side outlet of the air through shell-and-tube heat exchanger after being further processed according to step 2 is flowed into carbonated drink
Physical separation is carried out in separator, liquid water discharge obtains low temperature drying compressed air, meanwhile, the BOG after exchanging heat in step 2
Tube side outlet through shell-and-tube heat exchanger enters in BOG retracting devices；
Step 4：Entered through bushing type forecooler inner tube inlet according to the low temperature drying compressed air obtained after rapid three processing
Into bushing type forecooler, with through the compressed air heat exchange of air compressor machine, own temperature is improved, from bushing type forecooler inner tube
Outlet outflow；
Step 5：The above steps are repeated.
Advantageous effect：A kind of natural gas filling station instrument wind cold energy drying system provided by the invention and technique, compared to
Traditional vapour compression refrigeration formula instrument wind drying system, has the following advantages：1, the refrigerant compression in legacy system is eliminated
Machine, system structure is more succinct, and reduces power consumption；2, the boil-off gas BOG cold energy of waste originally is utilized, realizes energy saving
Emission reduction, and reduce pollution of the boil-off gas to environment；3, new system is small to existing natural gas filling station structural modification, reduces system
System improvement cost, application are strong.
Description of the drawings
Fig. 1 is schematic diagram of the present invention.
Wherein：1- air compressor machines, 2- bushing types forecooler, 3- shell-and-tube heat exchangers, 4- moisture traps, the temporary storage tanks of 5-BOG,
6- compressed air lines, 7-BOG pipelines.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in the picture, a kind of natural gas filling station instrument wind cold energy drying system, including the precooling of air compressor machine 1, bushing type
Device 2, shell-and-tube heat exchanger 3, steam-water separator 4 and the temporary storage tanks 5 of BOG, the outer tube of the outlet and bushing type forecooler 2 of air compressor machine 1
Entrance is connected, and the outer tube outlet of bushing type forecooler 2 is connected with the shell side inlet of shell-and-tube heat exchanger 3, shell-and-tube heat exchanger 3
Shell-side outlet be connected with 4 entrance of steam-water separator, the gas vent of steam-water separator 4 passes through compressed air line 6 and casing
The inner tube inlet of formula forecooler 2 is connected, the tube-side inlet that the outlets of the temporary storage tanks of BOG 5 passes through BOG pipelines 7 and shell-and-tube heat exchanger 3
It is connected, the tube side outlet of shell-and-tube heat exchanger 3 is connected by BOG pipelines 7 with BOG retracting devices.
A kind of natural gas filling station instrument wind cold energy drying process, is handled, including following step based on above-mentioned system
Suddenly：
Step 1：Air enters the temperature after overcompression is pressurized of air compressor machine 1 and increases, through 2 outer tube inlet of bushing type forecooler
It enters in bushing type forecooler 2 and exchanges heat with the low temperature drying compressed air in 2 inner tube of bushing type forecooler, temperature reduces；
Step 2：It is exported by 2 outer tube of bushing type forecooler according to step 1 treated air and flows out and changed through shell-and-tube
The shell side inlet of hot device 3 enters in shell-and-tube heat exchanger 3, meanwhile, the BOG in the temporary storage tanks of BOG 5 is through shell-and-tube heat exchanger 3
Tube-side inlet enters in shell-and-tube heat exchanger 3, and treated that air exchanges heat with BOG in shell-and-tube heat exchanger 3 for step 1, makes
Air themperature is further decreased to 2 DEG C of dew-point temperature, and the liquid water in air is made to be precipitated；
Step 3：Shell-side outlet of the air through shell-and-tube heat exchanger 3 after being further processed according to step 2 is flowed into vapour
Physical separation is carried out in separator 4, liquid water discharge obtains low temperature drying compressed air, meanwhile, after exchanging heat in step 2
Tube side outlets of the BOG through shell-and-tube heat exchanger 3 enters in BOG retracting devices；
Step 4：According to obtained low temperature drying compressed air after rapid three processing through 2 inner tube inlet of bushing type forecooler into
Enter into bushing type forecooler 2, with through 1 compressed air heat exchange of air compressor machine, own temperature is improved, from bushing type forecooler
2 inner tube outlets flow out；
Step 5：The above steps are repeated.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Within the technical scope disclosed by the invention, the change or replacement that can be readily occurred in should all be contained those skilled in the art
Within protection scope of the present invention, therefore, protection scope of the present invention should be with protection domain defined by claim for lid
Subject to.
Claims (2)
1. a kind of natural gas filling station instrument wind cold energy drying system, which is characterized in that be pre-chilled including air compressor machine (1), bushing type
Device (2), shell-and-tube heat exchanger (3), steam-water separator (4) and the temporary storage tanks of BOG (5), the outlet of the air compressor machine (1) and bushing type
The outer tube inlet of forecooler (2) is connected, the shell side inlet of the outer tube outlet and shell-and-tube heat exchanger (3) of bushing type forecooler (2)
It is connected, the shell-side outlet of the shell-and-tube heat exchanger (3) is connected with steam-water separator (4) entrance, the steam-water separator (4)
Gas vent is connected by compressed air line (6) with the inner tube inlet of bushing type forecooler (2), the temporary storage tanks of BOG (5)
Outlet is connected by BOG pipelines (7) with the tube-side inlet of shell-and-tube heat exchanger (3), and the tube side outlet of shell-and-tube heat exchanger (3) is logical
BOG pipelines (7) are crossed with BOG retracting devices to be connected.
2. a kind of natural gas filling station instrument wind cold energy drying process, which is characterized in that based on system described in claim 1 into
Row processing, includes the following steps：
Step 1：Air enters air compressor machine (1) temperature after overcompression is pressurized and increases, through bushing type forecooler (2) outer tube inlet
It enters in bushing type forecooler (2) and exchanges heat with the low temperature drying compressed air in bushing type forecooler (2) inner tube, temperature drop
It is low；
Step 2：Outflow exported by bushing type forecooler (2) outer tube according to step 1 treated air and through pipe shell type heat exchange
The shell side inlet of device (3) enters in shell-and-tube heat exchanger (3), meanwhile, the BOG in the temporary storage tanks of BOG (5) is through shell-and-tube heat exchanger
(3) tube-side inlet enters in shell-and-tube heat exchanger (3), and step 1 treated air is with BOG in shell-and-tube heat exchanger (3)
Middle heat exchange, makes air themperature be further decreased to dew-point temperature, and the liquid water in air is made to be precipitated；
Step 3：Shell-side outlet of the air through shell-and-tube heat exchanger (3) after being further processed according to step 2 is flowed into carbonated drink
Physical separation is carried out in separator (4), liquid water discharge obtains low temperature drying compressed air, meanwhile, after exchanging heat in step 2
Tube side outlets of the BOG through shell-and-tube heat exchanger (3) enters in BOG retracting devices；
Step 4：Entered through bushing type forecooler (2) inner tube inlet according to the low temperature drying compressed air obtained after rapid three processing
In to bushing type forecooler (2), with through the compressed air heat exchange of air compressor machine (1), own temperature is improved, is pre-chilled from bushing type
Device (2) inner tube outlet flows out；
Step 5：The above steps are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184887.2A CN108273364A (en) | 2018-03-07 | 2018-03-07 | A kind of natural gas filling station instrument wind cold energy drying system and technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184887.2A CN108273364A (en) | 2018-03-07 | 2018-03-07 | A kind of natural gas filling station instrument wind cold energy drying system and technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108273364A true CN108273364A (en) | 2018-07-13 |
Family
ID=62809281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810184887.2A Pending CN108273364A (en) | 2018-03-07 | 2018-03-07 | A kind of natural gas filling station instrument wind cold energy drying system and technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108273364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288298A (en) * | 2020-03-09 | 2020-06-16 | 李明 | Method for recovering natural gas discharged by hydrogen production device through desulfurization, temperature rise and emptying |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001258764A1 (en) * | 2001-05-17 | 2003-05-08 | Chiyoda Corporation | Device and method for pressure control of cargo tank of liquefied natural gas carrier |
| CN1837734A (en) * | 2006-04-21 | 2006-09-27 | 程成 | A freezing dryer for compressed air |
| CN203731079U (en) * | 2014-01-14 | 2014-07-23 | 新地能源工程技术有限公司 | LNG (Liquefied Natural Gas) filling system for inland lake ship |
| CN204083779U (en) * | 2014-09-19 | 2015-01-07 | 四川金科环保科技有限公司 | LNG gas station integrating control is prized |
| CN204717343U (en) * | 2015-05-07 | 2015-10-21 | 乐山市热工仪表有限公司 | A kind of refrigeration plant for reclaiming boil-off gas cold energy |
| CN105715948A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | System and method for recovering BOG gas in LNG gas station through liquefaction |
| CN208097749U (en) * | 2018-03-07 | 2018-11-16 | 中国矿业大学 | A kind of natural gas filling station instrument wind cold energy drying system |
-
2018
- 2018-03-07 CN CN201810184887.2A patent/CN108273364A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001258764A1 (en) * | 2001-05-17 | 2003-05-08 | Chiyoda Corporation | Device and method for pressure control of cargo tank of liquefied natural gas carrier |
| CN1837734A (en) * | 2006-04-21 | 2006-09-27 | 程成 | A freezing dryer for compressed air |
| CN203731079U (en) * | 2014-01-14 | 2014-07-23 | 新地能源工程技术有限公司 | LNG (Liquefied Natural Gas) filling system for inland lake ship |
| CN204083779U (en) * | 2014-09-19 | 2015-01-07 | 四川金科环保科技有限公司 | LNG gas station integrating control is prized |
| CN204717343U (en) * | 2015-05-07 | 2015-10-21 | 乐山市热工仪表有限公司 | A kind of refrigeration plant for reclaiming boil-off gas cold energy |
| CN105715948A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | System and method for recovering BOG gas in LNG gas station through liquefaction |
| CN208097749U (en) * | 2018-03-07 | 2018-11-16 | 中国矿业大学 | A kind of natural gas filling station instrument wind cold energy drying system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288298A (en) * | 2020-03-09 | 2020-06-16 | 李明 | Method for recovering natural gas discharged by hydrogen production device through desulfurization, temperature rise and emptying |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180713 |