CN106753641A - A kind of system of natural gas drying unit reclaiming gas heat - Google Patents
A kind of system of natural gas drying unit reclaiming gas heat Download PDFInfo
- Publication number
- CN106753641A CN106753641A CN201611193556.2A CN201611193556A CN106753641A CN 106753641 A CN106753641 A CN 106753641A CN 201611193556 A CN201611193556 A CN 201611193556A CN 106753641 A CN106753641 A CN 106753641A
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- CN
- China
- Prior art keywords
- molecular sieve
- valve
- heat exchanger
- natural gas
- gas
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
- F28D21/001—Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
Abstract
The invention discloses a kind of system of natural gas drying unit reclaiming gas heat, when the first molecular sieve is in and dries working condition and the second molecular sieve and be in reproduction operation state, natural gas partial enters First Heat Exchanger after the dehydration out of first molecular sieve, with the regeneration natural gas in the second molecular sieve out heat exchange is carried out in First Heat Exchanger, first molecular sieve partially dehydrated rear natural gas out is preheated, and again by the second heat exchanger conduction oil heat up after enter the second molecular sieve in, be conducive to the regeneration of the second molecular sieve.No longer all rely on conduction oil in the present invention to heat up natural gas after dehydration, effectively using the heat of regeneration gas.
Description
Technical field
The present invention relates to natural gas technical field, more particularly to a kind of natural gas drying unit reclaiming gas heat
System.
Background technology
At present, high temperature regeneration gas goes out directly cooled device cooling after adsorption tower, and heat utilization not yet in effect causes the wave of heat
Take.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of natural gas drying unit reclaiming
The system of gas heat, it is intended to which it is all after being pressurizeed through compressor after air temperature or other devices cover heat to solve BOG in the prior art
Into gas distributing system, heat utilization not yet in effect.
Technical scheme is as follows：
A kind of system of natural gas drying unit reclaiming gas heat, wherein, including：
First molecular sieve；
Second molecular sieve；
Natural gas air inlet pipe；
The natural gas air inlet pipe is connected by the first valve with the bottom of first molecular sieve；
The natural gas air inlet pipe is connected by the second valve with the bottom of second molecular sieve；
First Heat Exchanger；
The top of first molecular sieve is connected by the 3rd valve with the dehydrated natural gas entrance of the First Heat Exchanger, and institute
The top for stating the first molecular sieve is also connected by the 3rd valve with ice chest；
The regeneration gas inlet of the First Heat Exchanger is connected by the 7th valve with the bottom of first molecular sieve；It is described
The regeneration gas inlet of First Heat Exchanger is connected by the 8th valve with the bottom of second molecular sieve；
The top of second molecular sieve is connected by the 4th valve with the dehydrated natural gas entrance of the First Heat Exchanger, and institute
The top for stating the second molecular sieve is also connected by the 4th valve with ice chest；
Second heat exchanger；
The dehydrated natural gas outlet of the First Heat Exchanger treats that intensification gas inlet is connected with second heat exchanger；It is described
Conduction oil is passed through in second heat exchanger and treats that intensification natural gas heats up with to being passed through in the second heat exchanger, natural gas after intensification
The top of the first molecular sieve or the top of the second molecular sieve are flowed to by gas outlet after the intensification of the second heat exchanger；Described
Gas outlet is connected by the 5th valve with the top of first molecular sieve after the intensification of two heat exchangers；Second heat exchange
Gas outlet is connected by the 6th valve with the top of second molecular sieve after the intensification of device；
3rd heat exchanger；
The regeneration gas outlet of the First Heat Exchanger is connected with the 3rd heat exchanger；
3rd heat exchanger is also connected with gravity separator.
The system of the natural gas drying unit reclaiming gas heat, wherein, it is passed through 220 DEG C in second heat exchanger
Conduction oil.
The system of the natural gas drying unit reclaiming gas heat, wherein, the 3rd heat exchanger contains including regeneration
Water gas inlet, the outlet of regeneration saturated gas, circulation water inlet and circulating water outlet；The regeneration saturated gas entrance
It is connected with the regeneration gas outlet of the First Heat Exchanger, regeneration saturated gas outlet connects with the gravity separator
Connect, recirculated water is discharged after being exchanged heat into the 3rd heat exchanger by circulating water inlet by circulating water outlet.
The system of the natural gas drying unit reclaiming gas heat, wherein, first molecular sieve sequentially switches dry
Dry working condition, reproduction operation state and cold blowing working condition；Second molecular sieve sequentially switches reproduction operation state, cold blowing
Working condition and dry working condition.
The system of the natural gas drying unit reclaiming gas heat, wherein, first molecular sieve dries work
State duration is 10.5h, and reproduction operation state duration is 4h, and the duration of cold blowing working condition is 5.5h；Institute
The reproduction operation state duration of the second molecular sieve is stated for 4h, the cold blowing working condition duration is 5.5h, dries work shape
The duration of state is 10.5h.
The system of the natural gas drying unit reclaiming gas heat, wherein, first molecular sieve is in back tender
When making state and second molecular sieve and being in reproduction operation state, first valve, the 3rd valve, the 6th valve and the
Eight valves are opened, and second valve, the 4th valve, the 5th valve and the 7th valve are turned off.
The system of the natural gas drying unit reclaiming gas heat, wherein, first molecular sieve is in regeneration work
Make state and second molecular sieve to be in when drying working condition, first valve, the 3rd valve, the 6th valve and the
Eight valves are turned off, and second valve, the 4th valve, the 5th valve and the 7th valve are opened.
The system of natural gas drying unit reclaiming gas heat provided by the present invention, when the first molecular sieve is in drying
When working condition and the second molecular sieve are in reproduction operation state, natural gas partial enters the after the dehydration out of the first molecular sieve
Regeneration natural gas in one heat exchanger, with the second molecular sieve out carries out heat exchange in First Heat Exchanger, and the first molecule is sifted out
The partially dehydrated rear natural gas for coming is preheated, and again after the conduction oil in the second heat exchanger heats up into the second molecular sieve
In, be conducive to the regeneration of the second molecular sieve.Conduction oil is no longer all relied in the present invention to heat up natural gas after dehydration, is had
Effect utilizes the heat of BOG gas.
Brief description of the drawings
Fig. 1 is the structural representation of the system preferred embodiment of natural gas drying unit reclaiming gas heat of the present invention
Figure.
Specific embodiment
The present invention provides a kind of system of natural gas drying unit reclaiming gas heat, to make the purpose of the present invention, skill
Art scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that tool described herein
Body embodiment is only used to explain the present invention, is not intended to limit the present invention.
As shown in figure 1, being the system preferred embodiment of natural gas drying unit reclaiming gas heat of the present invention
Structural representation, the system of the natural gas drying unit reclaiming gas heat includes：
First molecular sieve 110；
Second molecular sieve 120；
Natural gas air inlet pipe 200；
The natural gas air inlet pipe 200 is connected by the first valve 10 with the bottom of first molecular sieve 110；
The natural gas air inlet pipe 200 is connected by the second valve 20 with the bottom of second molecular sieve 120；
First Heat Exchanger 300；
The top of first molecular sieve 110 passes through the dehydrated natural gas entrance of the 3rd valve 30 and the First Heat Exchanger 300
310 are connected, and the top of first molecular sieve 110 is also connected by the 3rd valve 30 with ice chest 700；
The regeneration gas inlet 330 of the First Heat Exchanger 300 passes through the bottom of the 7th valve 70 and first molecular sieve 110
End connection；The regeneration gas inlet 330 of the First Heat Exchanger 300 also passes through the 8th valve 80 and second molecular sieve
120 bottom connection；
The top of second molecular sieve 120 passes through the dehydrated natural gas entrance of the 4th valve 40 and the First Heat Exchanger 300
310 are connected, and the top of second molecular sieve 120 is also connected by the 4th valve 40 with ice chest 700；
Second heat exchanger 400；
The dehydrated natural gas outlet 320 of the First Heat Exchanger 300 treats intensification gas inlet with second heat exchanger 400
410 connections；Conduction oil is passed through in second heat exchanger 400 and treats that intensification natural gas enters with to being passed through in the second heat exchanger 400
Row heats up, and natural gas flows to the first molecular sieve 110 by gas outlet 420 after the intensification of the second heat exchanger 400 after intensification
Top or the top of the second molecular sieve 120；Gas outlet 420 passes through the 5th valve after the intensification of second heat exchanger 400
50 are connected with the top of first molecular sieve 110；Gas outlet 420 is by the after the intensification of second heat exchanger 400
Six valves 60 are connected with the top of second molecular sieve 120；
3rd heat exchanger 500；
The regeneration gas outlet 340 of the First Heat Exchanger 300 is connected with the 3rd heat exchanger 500；
3rd heat exchanger 500 is also connected with gravity separator 600.
Specifically, the system of the natural gas drying unit reclaiming gas heat, first molecular sieve 110 is sequentially cut
Change and dry working condition, reproduction operation state and cold blowing working condition；Second molecular sieve 120 sequentially switches reproduction operation shape
State, cold blowing working condition and dry working condition.During specific implementation, first molecular sieve 110 be arranged on the first drying tower or
In first adsorption tower；Second molecular sieve 120 is arranged in the second drying tower or the second adsorption tower.
Specifically, the work state duration that dries of first molecular sieve 110 is 10.5h, reproduction operation state is held
The continuous time is 4h, and the duration of cold blowing working condition is 5.5h；When the reproduction operation state of second molecular sieve 120 continues
Between be 4h, the cold blowing working condition duration be 5.5h, dry working condition duration be 10.5h.
Specifically, first molecular sieve 110 is in and dries working condition and second molecular sieve 120 and be in regeneration work
When making state, first valve 10, the 3rd valve 30, the 6th valve 60 and the 8th valve 80 are opened, second valve
20th, the 4th valve 40, the 5th valve 50 and the 7th valve 70 are turned off.
Specifically, first molecular sieve 110 is in reproduction operation state and second molecular sieve 120 is in back tender
When making state, first valve 10, the 3rd valve 30, the 6th valve 60 and the 8th valve 80 are turned off, second valve
20th, the 4th valve 40, the 5th valve 50 and the 7th valve 70 are opened.
In embodiments of the invention, when the first molecular sieve 110 is in drying working condition and the second molecular sieve 120 in again
During raw working condition, natural gas partial enters First Heat Exchanger 300 after the dehydration out of the first molecular sieve 110, with the second molecule
Regeneration natural gas in sieve 120 out carries out heat exchange in First Heat Exchanger 300, de- to the first molecular sieve 110 part out
Natural gas is preheated after water, and again by the second heat exchanger 400 conduction oil heat up after enter the second molecular sieve 120 in,
Be conducive to the regeneration of the second molecular sieve.Meanwhile, carry out the regeneration natural gas after heat exchange and pass sequentially through the 3rd heat exchanger 500 and follow
Ring water carries out heat exchange, and after the Gravity Separation of gravity separator 600 is processed, can be passed through gas distributing system.
When the first molecular sieve 110 in reproduction operation state and the second molecular sieve 120 in dry working condition when, second
Natural gas partial enters the regeneration in First Heat Exchanger 300, with the first molecular sieve 110 out after the dehydration out of molecular sieve 120
Natural gas carries out heat exchange in First Heat Exchanger 300, the second molecular sieve 120 partially dehydrated rear natural gas out is carried out pre-
Heat, and again by the second heat exchanger 400 conduction oil heat up after enter the first molecular sieve 110 in, be conducive to the first molecular sieve
110 regeneration.Meanwhile, carry out the regeneration natural gas after heat exchange and pass sequentially through the 3rd heat exchanger 500 to carry out hot friendship with recirculated water
Change, and after the Gravity Separation of gravity separator 600 is processed, gas distributing system can be passed through.
Further, 220 DEG C of conduction oil is passed through in second heat exchanger 400.
Further, the 3rd heat exchanger 500 includes that regeneration saturated gas entrance 510, regeneration saturated gas go out
Mouth 520, circulation water inlet 530 and circulating water outlet 540；The regeneration saturated gas entrance 510 and the First Heat Exchanger
300 regeneration gas outlet 340 is connected, and regeneration saturated gas outlet 520 is connected with the gravity separator 600,
Recirculated water is discharged after being exchanged heat into the 3rd heat exchanger by circulating water inlet 530 by circulating water outlet 540.
In sum, the system of natural gas drying unit reclaiming gas heat provided by the present invention, when the first molecule
Sieve in when drying working condition and the second molecular sieve and being in reproduction operation state, natural gas after the dehydration out of the first molecular sieve
Part enters First Heat Exchanger, and heat exchange is carried out in First Heat Exchanger with regeneration natural gas out in the second molecular sieve, to the
One molecular sieve partially dehydrated rear natural gas out is preheated, and again by the second heat exchanger conduction oil heat up after enter
In second molecular sieve, be conducive to the regeneration of the second molecular sieve.Conduction oil is no longer all relied in the present invention to natural gas after dehydration
Heated up, effectively using the heat of BOG gas.
It should be appreciated that application of the invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or converted, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Shield scope.
Claims (7)
1. a kind of system of natural gas drying unit reclaiming gas heat, it is characterised in that including：
First molecular sieve；
Second molecular sieve；
Natural gas air inlet pipe；
The natural gas air inlet pipe is connected by the first valve with the bottom of first molecular sieve；
The natural gas air inlet pipe is connected by the second valve with the bottom of second molecular sieve；
First Heat Exchanger；
The top of first molecular sieve is connected by the 3rd valve with the dehydrated natural gas entrance of the First Heat Exchanger, and institute
The top for stating the first molecular sieve is also connected by the 3rd valve with ice chest；
The regeneration gas inlet of the First Heat Exchanger is connected by the 7th valve with the bottom of first molecular sieve；It is described
The regeneration gas inlet of First Heat Exchanger is connected by the 8th valve with the bottom of second molecular sieve；
The top of second molecular sieve is connected by the 4th valve with the dehydrated natural gas entrance of the First Heat Exchanger, and institute
The top for stating the second molecular sieve is also connected by the 4th valve with ice chest；
Second heat exchanger；
The dehydrated natural gas outlet of the First Heat Exchanger treats that intensification gas inlet is connected with second heat exchanger；It is described
Conduction oil is passed through in second heat exchanger and treats that intensification natural gas heats up with to being passed through in the second heat exchanger, natural gas after intensification
The top of the first molecular sieve or the top of the second molecular sieve are flowed to by gas outlet after the intensification of the second heat exchanger；Described
Gas outlet is connected by the 5th valve with the top of first molecular sieve after the intensification of two heat exchangers；Second heat exchange
Gas outlet is connected by the 6th valve with the top of second molecular sieve after the intensification of device；
3rd heat exchanger；
The regeneration gas outlet of the First Heat Exchanger is connected with the 3rd heat exchanger；
3rd heat exchanger is also connected with gravity separator.
2. the system of natural gas drying unit reclaiming gas heat according to claim 1, it is characterised in that described second
220 DEG C of conduction oil is passed through in heat exchanger.
3. the system of natural gas drying unit reclaiming gas heat according to claim 1, it is characterised in that the described 3rd
Heat exchanger includes regeneration saturated gas entrance, the outlet of regeneration saturated gas, circulation water inlet and circulating water outlet；It is described again
Raw saturated gas entrance be connected with the regeneration gas outlet of the First Heat Exchanger, regeneration saturated gas outlet and
Gravity separator connection, recirculated water is gone out after being exchanged heat into the 3rd heat exchanger by circulating water inlet by recirculated water
Mouth discharge.
4. the system of natural gas drying unit reclaiming gas heat according to claim 1, it is characterised in that described first
Molecular sieve sequentially switches and dries working condition, reproduction operation state and cold blowing working condition；Second molecular sieve sequentially switches
Reproduction operation state, cold blowing working condition and dry working condition.
5. the system of natural gas drying unit reclaiming gas heat according to claim 4, it is characterised in that described first
Molecular sieve dries work state duration for 10.5h, reproduction operation state duration is 4h, and cold blowing working condition is held
The continuous time is 5.5h；The reproduction operation state duration of second molecular sieve is 4h, and the cold blowing working condition duration is
5.5h, the duration for drying working condition is 10.5h.
6. the system of natural gas drying unit reclaiming gas heat according to claim 4, it is characterised in that described first
Molecular sieve is in when drying working condition and second molecular sieve and being in reproduction operation state, first valve, the 3rd valve
Door, the 6th valve and the 8th valve are opened, and second valve, the 4th valve, the 5th valve and the 7th valve are turned off.
7. the system of natural gas drying unit reclaiming gas heat according to claim 4, it is characterised in that described first
Molecular sieve is in reproduction operation state and second molecular sieve is in when drying working condition, first valve, the 3rd valve
Door, the 6th valve and the 8th valve are turned off, and second valve, the 4th valve, the 5th valve and the 7th valve are opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193556.2A CN106753641A (en) | 2016-12-21 | 2016-12-21 | A kind of system of natural gas drying unit reclaiming gas heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193556.2A CN106753641A (en) | 2016-12-21 | 2016-12-21 | A kind of system of natural gas drying unit reclaiming gas heat |
Publications (1)
| Publication Number | Publication Date |
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| CN106753641A true CN106753641A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611193556.2A Pending CN106753641A (en) | 2016-12-21 | 2016-12-21 | A kind of system of natural gas drying unit reclaiming gas heat |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006083311A (en) * | 2004-09-17 | 2006-03-30 | Ebara Corp | Apparatus for refining sewage gas and method for refining the same gas |
| CN101664631A (en) * | 2009-09-27 | 2010-03-10 | 西安超滤化工有限责任公司 | Energy-saving separation device for mixed gas molecular sieve |
| CN201643947U (en) * | 2009-06-11 | 2010-11-24 | 西安超滤净化工程有限公司 | Zero-discharge gas drying device |
| CN101899341A (en) * | 2009-05-26 | 2010-12-01 | 西安联合超滤净化设备有限公司 | Adsorption type high pressure natural gas dehydration process and device |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
-
2016
- 2016-12-21 CN CN201611193556.2A patent/CN106753641A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006083311A (en) * | 2004-09-17 | 2006-03-30 | Ebara Corp | Apparatus for refining sewage gas and method for refining the same gas |
| CN101899341A (en) * | 2009-05-26 | 2010-12-01 | 西安联合超滤净化设备有限公司 | Adsorption type high pressure natural gas dehydration process and device |
| CN201643947U (en) * | 2009-06-11 | 2010-11-24 | 西安超滤净化工程有限公司 | Zero-discharge gas drying device |
| CN101664631A (en) * | 2009-09-27 | 2010-03-10 | 西安超滤化工有限责任公司 | Energy-saving separation device for mixed gas molecular sieve |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
Non-Patent Citations (1)
| Title |
|---|
| 中国石油天然气管道工程有限公司: "《油气储运技术论文集（第二卷）》", 31 August 2006, 中国石油出版社 * |
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Application publication date: 20170531 |
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