CN107174944A - A kind of natural gas with filtering function collects conveyance conduit - Google Patents
A kind of natural gas with filtering function collects conveyance conduit Download PDFInfo
- Publication number
- CN107174944A CN107174944A CN201710464314.0A CN201710464314A CN107174944A CN 107174944 A CN107174944 A CN 107174944A CN 201710464314 A CN201710464314 A CN 201710464314A CN 107174944 A CN107174944 A CN 107174944A
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- CN
- China
- Prior art keywords
- natural gas
- conveyance conduit
- layer
- disengagement chamber
- filtering function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- 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
- B01D53/22—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 by diffusion
- B01D53/228—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 by diffusion characterised by specific membranes
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- 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
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing 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
- 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
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
-
- 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
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)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
Conveyance conduit, including collecting pipe, collector, coarse filtration net, sucktion fan, cellulose acetate film, disengagement chamber, carbonaceous gas discharge pipe, stainless steel tube, cyclone separator, heat-insulated packed layer, corrosion-inhibiting coating, desulfurization plate, filter core, sealing gland, outer skeleton, compound coalescing layer, nonwoven layer, glass fiber filter film, filtrate packed layer, inner frame, wire mesh demister, corrugated sheet and ring flange are collected the invention discloses a kind of natural gas with filtering function.The present invention is converged and collected to natural gas using multiple pipelines in natural gas extraction, internal carbonaceous gas separate by cellulose acetate film to remove, it is to avoid carbon containing natural gas causes the short fiery phenomenon occurred during burning；Desulfurization is carried out to natural gas using desulfurization plate, it is to avoid sulfur-containing gas cause the corrosion of conveyance conduit when conveying, prevent natural gas from being revealed in conveying, increase security performance while extending the service life of conveyance conduit.
Description
Technical field
The present invention relates to a kind of conveyance conduit, specially a kind of natural gas with filtering function collects conveyance conduit, category
In natural gas relevant device applied technical field.
Background technology
Natural gas refers to a naturally occurring tangential gas in nature, including in atmospheric thermodynamics, hydrosphere and lithosphere it is various from
The gas of right process formation；Natural gas is mainly used for making fuel, carbon black, chemicals and liquefied petroleum gas can be manufactured, by day
Propane, the butane of right gas production are the important source materials of modern industry, thus gas extraction has great importance.
Existing natural gas is directly conveyed the mixed gas after exploitation, the natural gas directly exploited in exploitation
Sulphur, water and dust are contained in inside, directly convey cost height, sulphur-containing substance is big to corrosive pipeline in addition, causes pipeline easily to let out
, there is very big potential safety hazard in leakage, while pipeline is needed in time with changing, cost is high, and quantities is big.Therefore, carry regarding to the issue above
Go out a kind of natural gas with filtering function and collect conveyance conduit.
The content of the invention
The purpose of the present invention is that a kind of natural gas with filtering function is provided to solve the above problems to be collected
Conveyance conduit.
The present invention is achieved through the following technical solutions above-mentioned purpose, and a kind of natural gas with filtering function collects conveying
Connection collector at the top of pipeline, including collecting pipe and stainless steel tube, the collecting pipe, and coarse filtration net is provided with the top of collector；
The top both sides of the coarse filtration net are provided with the top of sucktion fan, and coarse filtration net and are provided with inside connection disengagement chamber, and disengagement chamber
Cellulose acetate film；The disengagement chamber connects carbonaceous gas discharge pipe, and disengagement chamber side connection stainless steel tube；The stainless steel
Inside pipe wall is provided with heat-insulated packed layer, and heat-insulated packed layer inwall is provided with corrosion-inhibiting coating；Provided with whirlwind point inside the stainless steel tube
From device, and cyclone separator side is provided with desulfurization plate；The desulfurization plate side, which is provided with the top of filter core, and filter core, to be passed through
Sealing gland is connected to inside stainless steel tube；Outer skeleton, compound coalescing layer, non-woven fabrics are sequentially provided with inside the filter core
Layer, glass fiber filter film, filtrate packed layer and inner frame, and filter core side is provided with wire mesh demister；The wire mesh demister
Side connects corrugated sheet, and corrugated sheet side mounting flange.
It is preferred that, several described collecting pipes are equally distributed on the bottom of collector, and lead between collecting pipe and collector
Cross flange connection.
It is preferred that, traversed inside the disengagement chamber connection carbonaceous gas discharge pipe, stainless steel tube and collector, and disengagement chamber
Cellulose acetate film；Angle is 45 ° between the cellulose acetate film and disengagement chamber.
It is preferred that, the desulfurization plate uses wavy shaped configuration, and desulfurization plate is using a kind of iron, manganese salt and its oxide synthesis
Desulfurization plate.
It is preferred that, the compound coalescing layer connects outer skeleton and nonwoven layer, and compound coalescing layer using fin structure
Coalescing layer is combined for a kind of metallic fiber；The nonwoven layer connects filtrate packed layer by glass fiber filter film, and filtrate is filled
Layer is a kind of PTFE overlay films polyester filtrate packed layer.
It is preferred that, the corrugated sheet is equidistantly connected to the side of wire mesh demister, and corrugated sheet uses fold-line-shaped structure.
The beneficial effects of the invention are as follows：Natural gas of this kind with filtering function collects conveyance conduit, in natural gas extraction
The multiple pipelines of Shi Caiyong are converged and collected to natural gas, and internal carbonaceous gas is separated by cellulose acetate film
Remove, it is to avoid carbon containing natural gas causes the short fiery phenomenon occurred during burning；Desulfurization is carried out to natural gas using desulfurization plate, it is to avoid
Sulfur-containing gas cause the corrosion of conveyance conduit when conveying, prevent natural gas from being revealed in conveying, increase security performance same
The service life of Shi Yanchang conveyance conduits, is carried out by cyclone separator and filter core to the dust inside natural gas and moisture
Remove, while coordinating wire mesh demister and corrugated sheet to remove the foam, the water smoke that contain in natural gas, realize and directly convey
Clean natural gas, reduces conveying cost, without later purification, succinct convenient, has good economic benefit and social benefit, fits
Conjunction is promoted the use of.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is filter core internal structure schematic diagram of the present invention.
In figure：1st, collecting pipe, 2, collector, 3, coarse filtration net, 4, sucktion fan, 5, cellulose acetate film, 6, disengagement chamber,
7th, carbonaceous gas discharge pipe, 8, stainless steel tube, 9, cyclone separator, 10, heat-insulated packed layer, 11, corrosion-inhibiting coating, 12, desulfurization plate,
13rd, filter core, 131, sealing gland, 132, outer skeleton, 133, compound coalescing layer, 134, nonwoven layer, 135, glass fiber filter
Film, 136, filtrate packed layer, 137, inner frame, 14, wire mesh demister, 15, corrugated sheet, 16, ring flange.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to shown in Fig. 1-2, a kind of natural gas with filtering function collects conveyance conduit, including collecting pipe 1 and not
Become rusty steel pipe 8, the top of the collecting pipe 1 connection collector 2, and the natural gas inside multiple natural gas collecting pipes 1 can be converged
Collect, the top of collector 2 is provided with coarse filtration net 3, and primary filter is carried out to the natural gas that conveying comes up；The coarse filtration net
3 top both sides are provided with sucktion fan 4, and the natural gas of exploitation is aspirated, is allowed to be produced, enhances, the thick mistake
The top of filter screen 3 connection disengagement chamber 6, the inside of disengagement chamber 6 is provided with cellulose acetate film 5, and the cellulose acetate film 5 can make two
Carbon oxide gas are by without passing through natural gas, realizing the separation of carbon dioxide；The disengagement chamber 6 connects carbonaceous gas
Discharge pipe 7, can connect carbonaceous gas collection device, and the side of disengagement chamber 6 connects stainless steel tube 8；The inwall of stainless steel tube 8
Provided with heat-insulated packed layer 10, conveyance conduit is thermally shielded, the heat-insulated inwall of packed layer 10 is provided with corrosion-inhibiting coating 11, prevents day
The right corrosion of gas and its inner element to steel pipe；The inside of stainless steel tube 8 is provided with cyclone separator 9, can be to natural gas inside
Water and dust granule separated, the side of cyclone separator 9 be provided with desulfurization plate 12, realize the desulfurization inside natural gas；
The side of desulfurization plate 12 is provided with filter core 13, and the top of filter core 13 is connected to stainless steel by sealing gland 131
Inside pipe 8；Outer skeleton 132, compound coalescing layer 133, nonwoven layer 134, glass mistake are sequentially provided with inside the filter core 13
Filter membrane 135, filtrate packed layer 136 and inner frame 137, realize filtering, purification function, and the side of filter core 13 is provided with silk screen
Demister 14；The side of wire mesh demister 14 connects corrugated sheet 15, can remove the foam and water smoke inside natural gas, the ripple
The side mounting flange 16 of shape plate 15, is easy to be connected with gas delivering pipe.
As a kind of technical optimization scheme of the present invention, several described collecting pipes 1 are equally distributed on the bottom of collector 2
Connected between portion, and collecting pipe 1 and collector 2 by flange, the gas of natural gas extraction converged and collected, be easy into
Row conveying.
It is used as a kind of technical optimization scheme of the present invention, the connection carbonaceous gas of disengagement chamber 6 discharge pipe 7, stainless steel tube 8
With cellulose acetate film 5 is traversed inside collector 2, and disengagement chamber 6；Angle is between the cellulose acetate film 5 and disengagement chamber 6
45 °, realize separation to carbon dioxide, it is ensured that natural gas it is pure.
As a kind of technical optimization scheme of the present invention, the desulfurization plate 12 uses wavy shaped configuration, and desulfurization plate 12 is adopted
The desulfurization plate 12 synthesized with a kind of iron, manganese salt and its oxide, realizes and carries out desulfurization to natural gas, prevent sulphur-containing substance to pipeline
Corrosion.
As a kind of technical optimization scheme of the present invention, the compound coalescing layer 133 connects dermoskeleton using fin structure
Frame 132 and nonwoven layer 134, and compound coalescing layer 133 is that a kind of metallic fiber is combined coalescing layer 133；The nonwoven layer 134
The connection filtrate of glass fiber filter film 135 packed layer 136 is crossed, and filtrate packed layer 136 is a kind of PTFE overlay films polyester filtrate packed layer
136, filtered and purified.
As a kind of technical optimization scheme of the present invention, the corrugated sheet 15 is equidistantly connected to the one of wire mesh demister 14
Side, and corrugated sheet 15 uses fold-line-shaped structure, realizes foam removal and the removal of water smoke.
In the use of the present invention, natural gas of this kind with filtering function collects conveyance conduit, will in natural gas extraction
Gas delivering pipe is connected with ring flange 16, realizes the natural gas transportation after exploitation, collecting pipe 1 is inserted into natural gas, beaten
Open sucktion fan 4 to aspirate natural gas, converged and collected by collector 2, the natural gas after collection passes through thick mistake
Filter screen 3 enters disengagement chamber 6 after carrying out primary filter, in the case where the selection of cellulose acetate film 5 is passed through, makes carbon dioxide quilt
Absorption by carbonaceous gas discharge pipe 7 is excluded and collected, and natural gas enters the progress moisture of cyclone separator 9 and dust
Cyclonic separation, is then entered inside desulfurization plate 12, the desulfurization plate 12 and sulphur-containing substance synthesized through iron, manganese salt and its oxide
Reaction, realizes the removal of sulphur, the natural gas after desulfurization after the filtration, purification of filter core 13 by delivery pipe by being exported.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. a kind of natural gas with filtering function collects conveyance conduit, including collecting pipe (1) and stainless steel tube (8), its feature
It is：Coarse filtration net (3) is provided with the top of the collecting pipe (1) at the top of connection collector (2), and collector (2)；The coarse filtration
The top both sides of net (3) are provided with connection disengagement chamber (6) at the top of sucktion fan (4), and coarse filtration net (3), and disengagement chamber (6) is internal
Provided with cellulose acetate film (5)；Disengagement chamber (6) the connection carbonaceous gas discharge pipe (7), and the connection of disengagement chamber (6) side is not
Become rusty steel pipe (8)；Stainless steel tube (8) inwall is provided with heat-insulated packed layer (10), and heat-insulated packed layer (10) inwall is provided with anti-corrosion
Coating (11)；Cyclone separator (9) is provided with inside the stainless steel tube (8), and cyclone separator (9) side is provided with desulfurization plate
(12)；Desulfurization plate (12) side is provided with the top of filter core (13), and filter core (13) by sealing gland (131) even
It is connected on stainless steel tube (8) internal；Be sequentially provided with inside the filter core (13) outer skeleton (132), compound coalescing layer (133),
Nonwoven layer (134), glass fiber filter film (135), filtrate packed layer (136) and inner frame (137), and filter core (13) side
Provided with wire mesh demister (14)；Wire mesh demister (14) the side connection corrugated sheet (15), and the connection of corrugated sheet (15) side
Ring flange (16).
2. a kind of natural gas with filtering function according to claim 1 collects conveyance conduit, it is characterised in that：It is described
Several collecting pipes (1) are equally distributed between the bottom of collector (2), and collecting pipe (1) and collector (2) to be connected by flange
Connect.
3. a kind of natural gas with filtering function according to claim 1 collects conveyance conduit, it is characterised in that：It is described
Acetic acid is traversed inside disengagement chamber (6) connection carbonaceous gas discharge pipe (7), stainless steel tube (8) and collector (2), and disengagement chamber (6)
Cellulose membrane (5)；Angle is 45 ° between the cellulose acetate film (5) and disengagement chamber (6).
4. a kind of natural gas with filtering function according to claim 1 collects conveyance conduit, it is characterised in that：It is described
Desulfurization plate (12) uses wavy shaped configuration, and desulfurization plate (12) is using the desulfurization plate of a kind of iron, manganese salt and its oxide synthesis
(12)。
5. a kind of natural gas with filtering function according to claim 1 collects conveyance conduit, it is characterised in that：It is described
Compound coalescing layer (133) connects outer skeleton (132) and nonwoven layer (134), and compound coalescing layer (133) using fin structure
Coalescing layer (133) is combined for a kind of metallic fiber；The nonwoven layer (134) crosses glass fiber filter film (135) connection filtrate filling
Layer (136), and filtrate packed layer (136) is a kind of PTFE overlay films polyester filtrate packed layer (136).
6. a kind of natural gas with filtering function according to claim 1 collects conveyance conduit, it is characterised in that：It is described
Corrugated sheet (15) is equidistantly connected to the side of wire mesh demister (14), and corrugated sheet (15) uses fold-line-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464314.0A CN107174944A (en) | 2017-06-19 | 2017-06-19 | A kind of natural gas with filtering function collects conveyance conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710464314.0A CN107174944A (en) | 2017-06-19 | 2017-06-19 | A kind of natural gas with filtering function collects conveyance conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107174944A true CN107174944A (en) | 2017-09-19 |
Family
ID=59836550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710464314.0A Pending CN107174944A (en) | 2017-06-19 | 2017-06-19 | A kind of natural gas with filtering function collects conveyance conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107174944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916657A (en) * | 2018-07-16 | 2018-11-30 | 燕山大学 | A kind of natural gas purification gathering line |
-
2017
- 2017-06-19 CN CN201710464314.0A patent/CN107174944A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916657A (en) * | 2018-07-16 | 2018-11-30 | 燕山大学 | A kind of natural gas purification gathering line |
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Application publication date: 20170919 |
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