CN107216923A - The composite bed adsorbent equipment of natural gas pretreatment - Google Patents
The composite bed adsorbent equipment of natural gas pretreatment Download PDFInfo
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- CN107216923A CN107216923A CN201710498542.XA CN201710498542A CN107216923A CN 107216923 A CN107216923 A CN 107216923A CN 201710498542 A CN201710498542 A CN 201710498542A CN 107216923 A CN107216923 A CN 107216923A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000003463 adsorbent Substances 0.000 title claims abstract description 41
- 239000003345 natural gas Substances 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 138
- 239000006096 absorbing agent Substances 0.000 claims abstract description 95
- 238000007664 blowing Methods 0.000 claims abstract description 47
- 230000008676 import Effects 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 claims abstract description 5
- 230000008929 regeneration Effects 0.000 claims description 71
- 238000011069 regeneration method Methods 0.000 claims description 71
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000013589 supplement Substances 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000001273 butane Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 5
- 239000003949 liquefied natural gas Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002829 nitrogen Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of composite bed adsorbent equipment of natural gas pretreatment, it includes forecooler, feed gas separator, absorber processing system, regenerate Gas Cooler, regenerate gas separating device, regenerate hot-air heater and cold blowing Gas Cooler, described absorber processing system includes absorber 103A, absorber 103B, absorber 103C, absorber 103A, absorber 103B, absorber 103C is separate parallel relationship and annexation is identical, the import T1 of forecooler connects raw material feed channel, the outlet P1 and feed gas separator of forecooler import are connected, the primary outlet of feed gas separator is connected with absorber 103A import, the sub-outlet of feed gas separator is connected with condensate liquid pipeline, absorber 103A outlet is connected with clarifier pipeline, absorber 103A outlet is simultaneously with regenerating Gas Cooler, the import connection of cold blowing Gas Cooler.The beneficial effects of the invention are as follows：Technological process is simple, component device is consumed less, treatment effeciency is high.
Description
Technical field
The present invention relates to the technical field of natural gas pretreatment and preliminary working, it is compound that specifically a kind of natural gas is pre-processed
Bed adsorption device.
Background technology
Natural gas is as a kind of clean energy resource of high-quality, the more and more higher in the energy resource structure ratio of China.At present, China
There is the less marginal gas field of big volume production reserves, associated gas, coal bed gas field, tolerance it is smaller and apart from gas line network compared with
Far, uneconomical using applied pipeline transportation method, thus be not utilized effectively, some long-term ignition are vented.
Natural gas liquefaction device can effectively be rich in the gas resource of methane using these, by technological innovation so that reclaiming
These resources and have an economic benefit, while device is also applied for the gas at exploration and development initial stage of oil gas field, shale gas, coal bed gas etc.
Body is reclaimed.
Natural gas will be pre-processed before natural gas liquefaction, what can be solidified under removing corrosive impurity and low temperature is miscellaneous
Matter.Preconditioning technique now is nearly all divided into independent several pieces, such as sweetening plant, dehydration/drying device, de- heavy hydrocarbon
Device etc. so that natural gas pretreating process flow is complicated, equipment is numerous, and economic benefit is poor.
In the prior art, patent " produces the front end combination purification work of liquefied natural gas from the mixed gas rich in methane
Skill "（Application number：CN200810044270.7）, patent " natural gas purification processing method "（Application number：CN2013（102）
37053.0）, patent " coke-stove gas preparing natural gas pretreatment unit "（Application number：CN201420119978.5）, patent it is " natural
Gas purification device "（Application number：CN201520510075.4）, " the marginal gas field based on cold, heat and electricity triple supply is natural for patent
Gas preprocess method "（Application number：CN201610329280.X）All various impurity are removed respectively, technological process is complicated；Patent
" a kind of apparatus and method of natural gas purification with drying "（Application number：CN201410339128.0）It is also to be respectively provided with depickling
Bed, de- heavy hydrocarbon bed are dehydrated, flow is also more complicated, it can be seen that, it need about the pre-processing device and system of natural gas into one
The perfect and exploitation of step.
The content of the invention
It is an object of the invention to overcome the shortcoming of prior art, there is provided a kind of technological process is simple, component device disappears
Consumption less, treatment effeciency it is high natural gas pretreatment composite bed adsorbent equipment.
The purpose of the present invention is achieved through the following technical solutions：A kind of composite bed absorption dress of natural gas pretreatment
Put, it includes forecooler, feed gas separator, absorber processing system, regeneration Gas Cooler, regeneration gas separating device, regeneration gas
Heater and cold blowing Gas Cooler, described absorber processing system include absorber 103A, absorber 103B, absorber
103C, absorber 103A, absorber 103B, absorber 103C is separate parallel relationship and annexation is identical, absorption
Device 103A, absorber 103B, absorber 103C quantity configuration set wherein one or more according to actual needs；Forecooler bag
Containing three separate paths, the import T1 of forecooler connects raw material feed channel, and the outlet P1 of forecooler is separated with unstripped gas
The import connection of device, the primary outlet of feed gas separator is connected with absorber 103A import, the sub-outlet of feed gas separator
Be connected with condensate liquid pipeline, absorber 103A outlet is connected with clarifier pipeline 5, absorber 103A outlet simultaneously with regeneration
The import connection of Gas Cooler, cold blowing Gas Cooler, the outlet of regeneration Gas Cooler is connected with the import of regeneration gas separating device, then
Import of the primary outlet of angry separator with regenerating hot-air heater is connected, and the sub-outlet and condensate liquid pipeline for regenerating gas separating device connect
Connect, the outlet of regeneration hot-air heater is connected with absorber 103A import again, the outlet of cold blowing Gas Cooler and the import of forecooler
T2 connections, the import of the outlet P2 of forecooler also with absorber 103A is connected, described clarifier pipeline simultaneously also with absorber
103A import connection.
Further, the import T3 of described forecooler and outlet P3 is used as refrigerant interface channel.
Further, described refrigerant be propane, propylene, butane, azeotrope, the freon for meeting environmental requirement or
Any one or more in other novel refrigerants, refrigerant is provided by independent refrigeration unit or by azeotrope compressor
There is provided.
Further, provided with regeneration air compressor between described regeneration gas separating device and regeneration hot-air heater；Described
Cold blowing air compressor is provided between cold blowing Gas Cooler and forecooler, regeneration air compressor, cold blowing air compressor are reciprocating pressure
Contracting machine, diaphragm compressor or helical-lobe compressor.
Further, between the sub-outlet of described feed gas separator and condensate liquid pipeline, absorber 103A outlet
Between clarifier pipeline 5, regeneration gas separating device sub-outlet and condensate liquid pipeline between be equipped with control valve.
Further, described forecooler, regeneration Gas Cooler, regeneration hot-air heater are plate-fin heat exchanger, shell-and-tube
Heat exchanger, wound tube heat exchanger or plate type heat exchanger.
Further, described feed gas separator, regeneration gas separating device are attached most importance to power decanter type separator, cyclone separator
Or other efficient cyclones.
Further, described absorber 103A is used in composite bed, absorber 103A and is filled with adsorbent, according to original
Expect that the adsorbent in flow direction of the gas in absorber 103A, absorber 103A loads dehydrated adsorbent, desulfurization absorption successively
Agent, de- heavy hydrocarbon adsorbent, carbon dioxide removal adsorbent, or filling desulfuration adsorbent, dehydrated adsorbent, de- heavy hydrocarbon absorption successively
Agent, carbon dioxide removal adsorbent.
Further, the raw gas pressure scope in described raw material feed channel is in 2.0 ~ 20Mpa.
Further, the supplement of the cold blowing gas in the regeneration gas and cold blowing Gas Cooler in described regeneration Gas Cooler is removed
Outside using purified gas, also using the indifferent gas of the flashed vapour in liquefaction ice chest, the BOG of other tail gas and LNG storage tanks, nitrogen etc
Body.
The present invention has advantages below：
1st, the composite bed adsorbent equipment of natural gas of the present invention pretreatment has that technological process is simple, component device disappears
The characteristics of consumption is few, integrated artistic flow of the invention is relatively easy, and principle is easy-to-understand, suitable for relevant enterprise technical staff to this
The system of device is grasped, meanwhile, process equipment, valve used in the present invention, pipeline, the quantity of instrument are greatly reduced, and reduce
The consumption of component device and consumption, realize the reduction of production cost.
2nd, the composite bed adsorbent equipment of natural gas pretreatment of the present invention also has the characteristics for the treatment of effeciency is high, this
Invention concentrates on multiple technological processes and equipment together, realizes substantially and settles processing work at one go to what natural gas was pre-processed
Make, it is to avoid scattered lengthy and jumbled processing work, the efficiency of natural gas pretreatment work is realized and significantly lifted.
Brief description of the drawings
Fig. 1 is the structural representation after 90 ° of the natural gas pretreating process rotate counterclockwise of three absorbers；
Fig. 2 is the structural representation after 90 ° of the natural gas pretreating process rotate counterclockwise of two absorbers；
Fig. 3 is the flow of 90 ° of the natural gas pretreating process rotate counterclockwise of three absorbers of external regeneration gas/cold blowing gas
Figure；
Fig. 4 is the flow of 90 ° of the natural gas pretreating process rotate counterclockwise of two absorbers of external regeneration gas/cold blowing gas
Figure；
1 in figure：1- raw material feed channels, 5- clarifier pipelines, 63- fuel gas cross lines, 73- condensate liquid pipelines, 101- precoolings
Device, 102- feed gas separators, 104- regeneration Gas Coolers, 105- regeneration gas separating devices, 106- regeneration air compressors, 107- is again
Angry heater, 108- cold blowing Gas Coolers, 109- cold blowing air compressors.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to following institute
State.
As shown in figure 1, a kind of composite bed adsorbent equipment of natural gas pretreatment, it includes forecooler 101, raw material qi leel
From device 102, absorber processing system, regeneration Gas Cooler 104, regeneration gas separating device 105, regeneration hot-air heater 107 and cold blowing
Gas Cooler 108, described absorber processing system includes absorber 103A, absorber 103B, absorber 103C, absorber
103A, absorber 103B, absorber 103C is separate parallel relationships and annexation is identical, absorber 103A, absorption
Device 103B, absorber 103C quantity configuration set wherein one or more according to actual needs；Forecooler 101 includes three
Separate path, the import T1 of forecooler 101 connects raw material feed channel 1, the outlet P1 and feed gas separator of forecooler 101
102 import connection, the primary outlet of feed gas separator 102 is connected with absorber 103A import, feed gas separator 102
Sub-outlet is connected with condensate liquid pipeline 73, and absorber 103A outlet is connected with clarifier pipeline 5, and absorber 103A outlet is same
When with regeneration Gas Cooler 104, cold blowing Gas Cooler 108 import be connected, regenerate Gas Cooler 104 outlet with regenerate qi leel
Import from device 105 is connected, and is regenerated import of the primary outlet of gas separating device 105 with regenerating hot-air heater 107 and is connected, regenerates qi leel
Sub-outlet from device 105 is connected with condensate liquid pipeline 73, and the import exported again with absorber 103A of regeneration hot-air heater 107 connects
Connect, the outlet of cold blowing Gas Cooler 108 is connected with the import T2 of forecooler 101, the outlet P2 of forecooler 101 also with absorber 103A
Import connection, the import of described clarifier pipeline 5 simultaneously also with absorber 103A is connected.
Further, as the preferred embodiment of the present invention, the import T3 and outlet P3 of described forecooler 101 make
For refrigerant interface channel；Described refrigerant be propane, propylene, butane, azeotrope, the freon for meeting environmental requirement or
Any one or more in other novel refrigerants, refrigerant is provided by independent refrigeration unit or by azeotrope compressor
There is provided；Provided with regeneration air compressor 106 between described regeneration gas separating device 105 and regeneration hot-air heater 107；Described cold blowing
Cold blowing air compressor 109, regeneration air compressor 106, cold blowing air compressor 109 are provided between Gas Cooler 108 and forecooler 101
For reciprocating compressor, diaphragm compressor or helical-lobe compressor；The sub-outlet and condensate line of described feed gas separator 102
Between road 73, between absorber 103A outlet and clarifier pipeline 5, the sub-outlet and condensate line of regeneration gas separating device 105
Control valve is equipped between road 73；Described forecooler 101, regeneration Gas Cooler 104, regeneration hot-air heater 107 are plate wing
Formula heat exchanger, shell-and-tube heat exchanger, wound tube heat exchanger or plate type heat exchanger；Described feed gas separator 102, regeneration gas
Separator 105 is gravity sedimentation type separator, cyclone separator or other efficient cyclones；Described absorber 103A is using multiple
Close in bed, absorber 103A and be filled with adsorbent, according to flow direction of the unstripped gas in absorber 103A, absorber 103A
Interior adsorbent loads dehydrated adsorbent, desulfuration adsorbent, de- heavy hydrocarbon adsorbent, carbon dioxide removal adsorbent successively, or successively
Load desulfuration adsorbent, dehydrated adsorbent, de- heavy hydrocarbon adsorbent, carbon dioxide removal adsorbent；In described raw material feed channel 1
Raw gas pressure scope is in 2.0 ~ 20Mpa；In regeneration gas and cold blowing Gas Cooler 108 in described regeneration Gas Cooler 104
Cold blowing gas supplement except using in addition to purified gas, also using the flashed vapour in liquefaction ice chest, the BOG of other tail gas and LNG storage tanks,
The inert gas of nitrogen etc.
The course of work of the present invention is as follows：Each system and component devices of the present invention are closed according to the connection shown in Fig. 1
It is to be installed, can begins to use after installation of the present invention.（1）, raw natural gas purification stream：Raw natural gas is by pipe
Road 1 enters to cool in forecooler 101, is drawn by pipe to 2 and enters separator 102, the condensate liquid of separation is depressured by valve 71
Enter condensate line road 73 afterwards, the natural gas isolated goes out separator 102 by pipeline 11, passes through pipeline 11A/B/C, valve 12A/B/
The First that C, convergence tube 3A/B/C enter in absorber 103A/B/C, goes out absorber 103A/B/ from convergence tube 4A/B/C afterwards
C, then cocurrent is entered in purification feed channel 5 to follow-up equipment from valve 13A/B/C, pipeline 14A/B/C.（2）, cold blowing air-flow road：It is cold
Air blowing cooled from forecooler 101 after, into cold blowing feed channel 21, then by pipeline 21A/B/C, valve 22A/B/C, converge
Enter in absorber 103A/B/C second of pipe 3A/B/C, goes out absorber 103A/B/C from convergence tube 4A/B/C afterwards, then by
Valve 23A/B/C, pipeline 24A/B/C enter in cold blowing feed channel 24 and flow to cold blowing Gas Cooler 108, are entered after cooling by pipeline 25
Enter cold blowing air compressor 109 to be pressurized, the cold blowing gas after supercharging is entered in forecooler 101 by pipeline 26 to be cooled down, and cold blowing gas is in closing
Stream in circulate until cooling terminate.（3）, regeneration gas stream：Regeneration gas comes out from regeneration hot-air heater 107, into regeneration
Feed channel 31, then the 3rd entered by pipeline 31A/B/C, valve 32A/B/C, convergence tube 3A/B/C in absorber 103A/B/C
Platform, goes out absorber 103A/B/C, then enter regeneration feed channel by valve 33A/B/C, pipeline 34A/B/C from convergence tube 4A/B/C afterwards
In 34 and regeneration gas cooler 104 is flowed to, regeneration gas separating device 105 is entered by pipeline 35 after cooling, the condensate liquid of separation is by valve
Enter condensate line road 73 after 72 decompressions, the natural gas isolated goes out separator 105 by pipeline 36, enters back into regeneration air compressor
106 superchargings, the regeneration gas after supercharging enters regeneration hot-air heater 107 by pipeline 37 and heated, and regeneration gas is followed in the stream of closing
Ring terminates until heating.（4）, absorber handoff procedure：Three absorber 103A, absorber 103B, the absorber 103C set,
First is in cold blowing in adsorbed state, second（Cooling）State, the 3rd in heating（Regeneration）State, three absorption
Device switching is used.The annexation of every absorber is identical, and every absorber is intended to experience absorption, heating（Regeneration）, cold blowing（It is cold
But）State, is recycled successively.（5）, cold blowing gas supplement and discharge：Cold blowing air-flow road is closing, and the supplement of cold blowing gas is used
Purified gas, enters convergence tube 3A/B/C from pipeline 41, pipeline 41A/B/C, valve 42A/B/C, is supplemented entering absorber 103A, inhales
Adnexa 103B, absorber 103C；In cold blowing（Cooling）After end, cold blowing gas is discharged into fuel gas system or torch from the decompression of valve 62.
（6）, regeneration gas supplement and discharge：Regeneration gas stream is closing, and the supplement of regeneration gas uses purified gas, from pipeline 41, pipeline
41A/B/C, valve 42A/B/C enter convergence tube 3A/B/C, are supplemented entering absorber 103A/B/C；In regeneration（Heating）Terminate
Afterwards, regeneration gas is discharged into fuel gas system or torch from the decompression of valve 61.
As shown in Fig. 2 described technique and device are to carry out natural gas pretreatment using two-tower process, it is different from Fig. 1 and exists
When absorber 103A is in absorption, absorber 103B is first in thermal regeneration, is then being cooled down；As shown in figure 3, described
Technique and device it is almost identical with Fig. 1, difference be regeneration gas/cold blowing gas supplement source using liquefaction ice chest in flash distillation
Gas, the BOG of LNG storage tanks and such as inert gas of nitrogen class；As shown in figure 4, described technique and device and Fig. 2 are almost
It is identical, difference be regeneration gas/cold blowing gas supplement source using liquefaction ice chest in flashed vapour, the BOG of LNG storage tanks and
Such as inert gas of nitrogen class.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should appended claims of the present invention protection domain
It is interior.
Claims (10)
1. a kind of composite bed adsorbent equipment of natural gas pretreatment, it is characterised in that：It includes forecooler（101）, unstripped gas
Separator（102）, absorber processing system, regeneration Gas Cooler（104）, regeneration gas separating device（105）, regeneration hot-air heater
（107）With cold blowing Gas Cooler（108）, described absorber processing system includes absorber 103A, absorber 103B, absorber
103C, absorber 103A, absorber 103B, absorber 103C is separate parallel relationship and annexation is identical, absorption
Device 103A, absorber 103B, absorber 103C quantity configuration set wherein one or more according to actual needs；Forecooler
（101）Include three separate paths, forecooler（101）Import T1 connect raw material feed channel（1）, forecooler（101）
Outlet P1 and feed gas separator（102）Import connection, feed gas separator（102）Primary outlet and absorber 103A
Import is connected, feed gas separator（102）Sub-outlet and condensate liquid pipeline（73）Connection, absorber 103A outlet and purification
Device pipeline（5）Connection, absorber 103A outlet is simultaneously with regenerating Gas Cooler（104）, cold blowing Gas Cooler（108）Import
Connection, regenerates Gas Cooler（104）Outlet with regeneration gas separating device（105）Import connection, regenerate gas separating device（105）'s
Primary outlet and regeneration hot-air heater（107）Import connection, regenerate gas separating device（105）Sub-outlet and condensate liquid pipeline（73）
Connection, regenerates hot-air heater（107）Outlet again be connected with absorber 103A import, cold blowing Gas Cooler（108）Outlet with
Forecooler（101）Import T2 connections, forecooler（101）Imports of the outlet P2 also with absorber 103A be connected, described is net
Change device pipeline（5）The import also with absorber 103A is connected simultaneously.
2. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described forecooler
（101）Import T3 with outlet P3 be used as refrigerant interface channel.
What 3. natural gas as claimed in claim 2 was pre-processed checks bed adsorption device, it is characterised in that：Described refrigerant
For any one in propane, propylene, butane, azeotrope, the freon for meeting environmental requirement or other novel refrigerants or
A variety of, refrigerant is provided by independent refrigeration unit or provided by azeotrope compressor.
4. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described regeneration gas
Separator（105）With regeneration hot-air heater（107）Between provided with regeneration air compressor（106）；Described cold blowing Gas Cooler
（108）With forecooler（101）Between be provided with cold blowing air compressor（109）, regenerate air compressor（106）, cold blowing air compressor
（109）For reciprocating compressor, diaphragm compressor or helical-lobe compressor.
5. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described unstripped gas
Separator（102）Sub-outlet and condensate liquid pipeline（73）Between, absorber 103A outlet and clarifier pipeline（5）Between,
Regenerate gas separating device（105）Sub-outlet and condensate liquid pipeline（73）Between be equipped with control valve.
6. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described forecooler
（101）, regeneration Gas Cooler（104）, regeneration hot-air heater（107）Changed for plate-fin heat exchanger, shell-and-tube heat exchanger, around tubular type
Hot device or plate type heat exchanger.
7. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described unstripped gas
Separator（102）, regeneration gas separating device（105）For gravity sedimentation type separator, cyclone separator or other efficient cyclones.
8. the composite bed adsorbent equipment of natural gas pretreatment as claimed in claim 1, it is characterised in that：Described absorber
103A is used in composite bed, absorber 103A and is filled with adsorbent, according to flow direction of the unstripped gas in absorber 103A,
Adsorbent in absorber 103A loads dehydrated adsorbent, desulfuration adsorbent, de- heavy hydrocarbon adsorbent, carbon dioxide removal absorption successively
Agent, or filling desulfuration adsorbent, dehydrated adsorbent, de- heavy hydrocarbon adsorbent, carbon dioxide removal adsorbent successively.
What 9. natural gas as claimed in claim 1 was pre-processed checks bed adsorption device, it is characterised in that：Raw material feed channel
（1）In raw gas pressure scope in 2.0 ~ 20Mpa.
What 10. natural gas as claimed in claim 1 was pre-processed checks bed adsorption device, it is characterised in that：Described regeneration
Gas Cooler（104）In regeneration gas and cold blowing Gas Cooler（108）In cold blowing gas supplement except using in addition to purified gas, also adopt
With the inert gas of the flashed vapour in liquefaction ice chest, the BOG of other tail gas and LNG storage tanks, nitrogen etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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