CN103471877B - Natural gas sampling after the deacidification of a kind of absorption tower and component analysis system - Google Patents
Natural gas sampling after the deacidification of a kind of absorption tower and component analysis system Download PDFInfo
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- CN103471877B CN103471877B CN201310455412.XA CN201310455412A CN103471877B CN 103471877 B CN103471877 B CN 103471877B CN 201310455412 A CN201310455412 A CN 201310455412A CN 103471877 B CN103471877 B CN 103471877B
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Abstract
The present invention discloses the sampling of the natural gas after the deacidification of a kind of absorption tower and component analysis system, and within the system, one end of sampling line is provided with sample probe, and sample probe is connected with gas pipeline；The other end of sampling line is connected with prime processing means, natural gas sample after acquired deacidification is sent into prime processing means carry out being incubated, reducing pressure, heat tracing pipe is connected between prime processing means and pretreatment unit, natural gas sample after the insulation of prime processing means, post-decompression deacidification being sent into pretreatment unit and carries out pretreatment, the natural gas sample after deacidification after pretreatment enters in order to measure CO2、H2The gas chromatograph of S constituent content is analyzed, and then obtains CO in the natural gas sample after deacidification2、H2The constituent content of S.
Description
Technical field
The present invention relates to area of natural gas liquefaction, natural in particular to after the deacidification of a kind of absorption tower
Gas sampling and component analysis system.
Background technology
Now in world energy sources production, natural gas has accounted for 1/3, and the most in the near future by
The most very popular oil and coal are extruded into back burner by step.Before the year two thousand twenty, natural gas is at world's energy
Ratio in the demand of source will reach 45%-50%.
Liquefied natural gas (Liquefied Natural Gas, LNG) is natural gas via compression, is cooled to it
The liquid become after boiling point (-161.5 degrees Celsius) temperature, its main component is methane, is recognized and is ground
The energy the cleanest on ball, colourless, tasteless, nontoxic and non-corrosiveness, its volume is about commensurability gaseous state sky
So 1/600 of air volume, the weight of liquefied natural gas is only about the 45% of consubstantiality hydrops.Liquefied natural gas
Manufacture process be first by gas field produce natural gas purification processing, through a succession of ultralow temperature liquefy after obtain.
Currently, middle-size and small-size natural gas liquefaction device, if scale is 200 × 104Nm3/ d(standard cubic meter/
My god) natural gas liquefaction device, the most still belong to pioneering, during natural gas liquefaction, if energy
Obtain in real time the constituent content of natural gas in each stage of liquefying, by the purification of follow-up phase, liquefaction process
Measure targetedly is taked to provide foundation, but how centering small-scaled natural gas liquification device natural gas liquefaction
The component in journey each stage, such as CO in the natural gas after the deacidification of absorption tower2、H2The constituent content of S, carries out reality
Time analyze, it is thus achieved that the content of the most each component in raw natural gas, be still a problem.
Summary of the invention
The present invention provides the sampling of the natural gas after the deacidification of a kind of absorption tower and component analysis system, in order to sky
So CO in natural gas sample after the deacidification of absorption tower during gas liquefaction2、H2The constituent content of S is carried out point
Analysis.
For reaching above-mentioned purpose, the invention provides the sampling of the natural gas after the deacidification of a kind of absorption tower and component
Analysis system, including: gas pipeline, sampling line, prime processing means, heat tracing pipe, pretreatment
Device, gas chromatograph, instrument wind apparatus, carrier gas device, FID(Flame Ionization Detector,
Flame ionic detector)/FPD(Flame Photometric Detector, flame photometric detector) use gas
Device and retracting device, wherein:
One end of described sampling line is provided with sample probe, described sample probe and described gas pipeline
It is connected, obtains the natural gas sample after the deacidification in described gas pipeline；
The other end of described sampling line is connected with described prime processing means, after acquired deacidification
Natural gas sample send into described prime processing means carry out being incubated, reducing pressure, wherein said prime process dress
Put and include that prime processes casing, prime processes pipeline, filter, electricity chuck regulate valve and the first electrical heating
Device, described prime processes pipeline and is arranged in described prime process casing, and described prime processes the one of pipeline
End is connected with described sampling line, and described filter and described electricity chuck regulation valve are successively set on described
Prime processes on pipeline, and the natural gas sample after deacidification presss from both sides through described electricity after described filter filters
Set regulation valve carries out being incubated, reducing pressure, and described prime processes in casing and is provided with the first electric heater, to institute
State prime process casing and carry out heating and thermal insulation；
Described heat tracing pipe is connected between the other end and the described pretreatment unit that described prime processes pipeline,
Natural gas sample after the insulation of described prime processing means, post-decompression deacidification is sent into described pre-place
Reason device carries out pretreatment, and wherein said pretreatment unit includes pretreatment casing, pretreatment pipeline, gathers
Knot device, decompression valve, liquid knockout, safety line, three-way switch valve, detailed catalogue filter, the first side
Through-flow gauge and the second electric heater, described pretreatment pipeline is arranged in described pretreatment box body, described
One end of pretreatment pipeline is connected with described heat tracing pipe, described coalescer, described decompression valve, institute
State liquid knockout, described three-way switch valve, described detailed catalogue filter and described first bypass flow meter to set successively
Put on described pretreatment pipeline, enter the natural gas sample after the deacidification of described pretreatment pipeline through institute
State and enter described decompression valve after coalescer filters impurity and reduce pressure, after post-decompression deacidification
Natural gas sample enters described detailed catalogue filter by described three-way switch valve and filters, described pretreatment
The other end of pipeline is connected with the sample gas air inlet pipeline of described gas chromatograph, described sample gas air inlet
Being disposed with sampling switch valve and sampling switch valve on pipeline, described first bypass flow meter is arranged on
The end of described pretreatment pipeline, controls the natural gas sample after deacidification and enters in order to measure CO2、H2S group
Flow when the described gas chromatograph dividing content is analyzed, described second electric heater is arranged on described
In pretreatment box body, described pretreatment casing is heated；
The bottom of described coalescer is connected with return pipeline, and described return pipeline is by many in described coalescer
The remaining natural gas sample after deacidification is back to process fuel system, and described return pipeline is disposed with
Second bypass flow meter and check-valves；
Described safety line is connected to the upstream of described three-way switch valve on described pretreatment pipeline and returns with described
On return pipe road between the downstream of described check-valves, described safety line is provided with relief valve, in order to work as
State the pressure in the described pretreatment pipeline before three-way switch valve when exceeding setting value, by described pretreatment
Pressure in pipeline is passed by described safety line and rushes down to described return pipeline；
The bottom of described liquid knockout is connected with the first discharging tube road, and described first discharging tube road is provided with
Controlled valve；
First end of described three-way switch valve is connected with described liquid knockout, the second of described three-way switch valve
End is connected with described detailed catalogue filter, by the natural gas after the deacidification after liquid removed by described liquid knockout
Described in Sample introduction, detailed catalogue filter filters, the 3rd end of described three-way switch valve and calibrating gas pipe
Road is connected；
Described retracting device includes discharge manifold, blowdown piping and the second discharging tube road, described blowdown piping
Be connected between the drain of described gas chromatograph and described discharge manifold, described second discharging tube road with
The drain of described gas chromatograph is connected, and described discharge manifold is provided with recovery gas interface and emptying
Mouthful, it is respectively arranged with controlled valve before wherein said recovery gas interface and described drain；
Described instrument wind apparatus includes instrument wind house steward, instrument wind interface and instrument wind transfer tube, wherein,
Described instrument wind interface is arranged on one end of described instrument wind house steward, is provided with before described instrument wind interface
Controlled valve, described instrument wind transfer tube is connected between described instrument wind house steward and described gas chromatograph；
Described carrier gas device includes carrier gas tank and carrier gas transfer pipe, and wherein, described carrier gas transfer pipe is connected to
Between described gas chromatograph and described carrier gas tank, described carrier gas transfer pipe is provided with controlled valve；
Described FID/FPD chromatograph device of air includes FID/FPD chromatograph gas tank and FID/FPD color
Spectrometer gas transfer tube, wherein, described FID/FPD chromatograph gas transfer tube is connected to described gas phase color
Between spectrometer and described FID/FPD chromatograph gas tank, on described FID/FPD chromatograph gas transfer tube
It is provided with controlled valve.
Optionally, described instrument wind transfer tube is provided with air purifier.
Optionally, the described pretreatment pipeline between described three-way switch valve and described detailed catalogue filter connects
It is equipped with the arm of sample tap, described arm is provided with controlled valve.
Optionally, the described pretreatment pipeline between described coalescer and described liquid knockout is provided with pressure
Instruction valve.
Optionally, the arrival end of described prime process pipeline is provided with controlled valve.
Optionally, the arrival end of described pretreatment pipeline is disposed with controlled valve and pressure reading instument.
Optionally, described carrier gas tank is 2, each described carrier gas tank is provided with double pressure indicator and
Valve.
Optionally, described FID/FPD chromatograph gas tank is 2, each described FID/FPD chromatograph
With being provided with double pressure indicator and valve on gas tank.
Optionally, described instrument wind transfer tube is 1 ＂ pipe.
In the above-described embodiments, the sky after the deacidification that the gas pipeline after the deacidification of absorption tower samples out
So gas sample product deliver to prime processing means via sampling line, through insulation in prime processing means, subtract
After pressure, pressure in pipe is down to 3.0Kg/cm2, afterwards from prime processing means out, through heat tracing pipeline
By the natural gas sample delivery after deacidification to pretreatment unit, after entering pretreatment unit, the sky after deacidification
So gas sample product filter out impurity through coalescer and deliver to second depressurized regulation valve, are decompressed to entering of gas chromatograph
Mouth pressure requires (about 1.0～3.0Kg/cm2), additionally unnecessary sample gas is back to work through return pipeline
In skill fuel system, simultaneously by being provided with the safety line of relief valve in case hypertonia.Through two grades
Natural gas sample after the deacidification of decompression enters liquid knockout, is removed by the liquid in gas, then will remove liquid
Three-way switch valve delivered to by natural gas sample after deacidification after body, and mark is accessed on a wherein road of three-way switch valve
Air pipe, the natural gas sample after deacidification is directed at detailed catalogue filter and filters by another road, through filtering
After deacidification after natural gas sample again through the first bypass flow meter, enter gas chromatograph and carry out component
Analyze, obtain CO in the natural gas sample after deacidification2、H2The constituent content of S, thus be raw natural gas
The purification of follow-up phase, liquefaction process take measure targetedly to provide foundation.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the natural gas sampling after the absorption tower deacidification of one embodiment of the invention and component analysis system
Structure chart.
Detailed description of the invention
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
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not paying
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Fig. 1 is the natural gas sampling after the absorption tower deacidification of one embodiment of the invention and component analysis system
Structure chart.As it can be seen, this system includes: gas pipeline 1, sampling line 2, prime processing means
3, heat tracing pipe, pretreatment unit 20, gas chromatograph 36, instrument wind apparatus, carrier gas device, FID/FPD
Chromatograph device of air and retracting device, wherein:
One end of sampling line 2 is provided with sample probe, and sample probe is connected with gas pipeline 1,
Obtain the natural gas sample after the deacidification in gas pipeline 1；
The other end of sampling line 2 is connected with prime processing means 3, by the sky after acquired deacidification
So gas sample product feeding prime processing means 3 carries out being incubated, reducing pressure, before wherein prime processing means 3 includes
Level process casing, prime process pipeline, filter 4, electricity chuck regulation valve 5 and the first electric heater 6,
Prime processes pipeline and is arranged in prime process casing, and prime processes one end and sampling line 2 phase of pipeline
Connecting, filter 4 and electricity chuck regulation valve 5 are successively set on prime and process on pipeline, the sky after deacidification
So gas sample product carry out being incubated, reducing pressure and (typically drop through electricity chuck regulation valve 5 after filter 4 filters
To 3.0Kg/cm2), prime processes in casing and is provided with the first electric heater 6, prime is processed casing and enters
Row heating and thermal insulation；
Heat tracing pipe is connected between the other end and the pretreatment unit 20 that prime processes pipeline, will be through prime
Processing means 3 is incubated, natural gas sample after post-decompression deacidification is sent into pretreatment unit 20 and carried out pre-place
Reason, wherein pretreatment unit 20 includes that pretreatment casing, pretreatment pipeline, coalescer 10, decompression are adjusted
Joint valve, liquid knockout 12, safety line, three-way switch valve 14, detailed catalogue filter 17, first bypass stream
Gauge 18 and the second electric heater 16, pretreatment pipeline is arranged in pretreatment box body, pretreatment pipeline
One end be connected with heat tracing pipe, coalescer 10, decompression valve, liquid knockout 12, three-way switch valve
14, detailed catalogue filter 17 and the first bypass flow meter 18 are successively set on pretreatment pipeline, enter pre-
Process the natural gas sample after the deacidification of pipeline after coalescer 10 filters impurity, enter decompression valve
Carry out second depressurized and (reduce to the inlet pressure requirements that can meet gas chromatograph, about 1.0～3.0Kg/cm2),
Natural gas sample after post-decompression deacidification enters detailed catalogue filter 17 by three-way switch valve 14 and enters
Row filters, and the other end of pretreatment pipeline is connected with the sample gas air inlet pipeline of gas chromatograph 36, sample
Sampling switch valve 22 and sampling switch valve 23(it is disposed with the most real on product gas air inlet pipeline
Executing in example, sampling switch valve 23 also can connect other pipeline 24 for sampling, and by each pipe
Sampling switch valve on road selects the sample gas in pipeline to be analyzed), the first bypass flow meter 18
It is arranged on the end of pretreatment pipeline, controls the natural gas sample after deacidification and enter in order to measure CO2、H2S
The flow when gas chromatograph 36 of constituent content is analyzed, the second electric heater 16 is arranged on pre-place
In reason casing, pretreatment casing is heated；
The bottom of coalescer 10 is connected with return pipeline, and return pipeline is by unnecessary taking off in coalescer 10
Natural gas sample after acid is back to process fuel system, and (in figure, 7 is return pipeline and process fuel system
The interface of process fuel pipe), return pipeline is disposed with the second bypass flow meter 9 and check-valves
8, it is simple to pipeline controls；
Safety line is connected to the upstream of three-way switch valve 14 and non-return on return pipeline on pretreatment pipeline
Between the downstream of valve 8, safety line is provided with relief valve 11, in order to before three-way switch valve 14
Pretreatment pipeline in pressure when exceeding setting value, the pressure in pretreatment pipeline is passed through safety line
Biography is rushed down to return pipeline；
The bottom of liquid knockout 12 and the first discharging tube road (in figure, 13 is the drain on the first discharging tube road)
It is connected, the first discharging tube road is provided with controlled valve；
First end of three-way switch valve 14 is connected with liquid knockout 12, the second end of three-way switch valve 14 with
Detailed catalogue filter 17 is connected, and is led by the natural gas sample after the deacidification after liquid removed by liquid knockout 12
Entering detailed catalogue filter 17 to filter, the 3rd end of three-way switch valve 14 is connected with calibrating gas pipeline,
In figure, 19 is the gas tank being connected with calibrating gas pipeline, and gas tank 19 is provided with double pressure instruction
Meter and valve, additionally, be also provided with controlled valve on calibrating gas pipeline；
Retracting device includes discharge manifold 25, blowdown piping 30 and the second discharging tube road 31, blowdown piping
Between 30 drains being connected to gas chromatograph 36 and discharge manifold 25, the second discharging tube road 31 and
The drain of gas chromatograph 36 is connected, and discharge manifold 25 is provided with recovery gas interface 21 and emptying
Mouth 26, is respectively arranged with controlled valve before wherein reclaiming gas interface 21 and drain 26, can be by opening
Closing valve controls to analyze recovery or the emptying of the natural gas sample after measuring through gas chromatograph 36；
Instrument wind apparatus includes instrument wind house steward 28, instrument wind interface 29, instrument wind transfer tube 27, its
In, instrument wind interface 29 is arranged on one end of instrument wind house steward 28, sets successively before instrument wind interface 29
Being equipped with controlled valve and pressure-regulating valve, instrument wind transfer tube 27 is connected to instrument wind house steward 28 and gas phase
Between chromatograph 36, additionally, be provided with air purifier 33 on instrument wind transfer tube 27, in order to blowing
The instrument wind entered purifies, and instrument wind transfer tube is 1 ＂ pipe；
Carrier gas device includes carrier gas tank 35, carrier gas transfer pipe, and wherein, carrier gas transfer pipe is connected to gas phase color
Between spectrometer 36 and carrier gas tank 35, carrier gas transfer pipe is provided with controlled valve；
FID/FPD chromatograph device of air includes FID/FPD chromatograph gas tank 34, FID/FPD chromatograph
Instrument gas transfer tube, wherein, FID/FPD chromatograph gas transfer tube be connected to gas chromatograph 36 with
FID/FPD chromatograph, with between gas tank 34, FID/FPD chromatograph gas transfer tube is provided with switch valve
Door.
Such as, the pretreatment pipeline between three-way switch valve 14 and detailed catalogue filter 17 is also connected with being provided with
The arm of sample tap 15, arm is provided with controlled valve, with from pretreatment pipeline to the sky after deacidification
So gas sample product are sampled analyzing.
Such as, the pretreatment pipeline between coalescer 10 and liquid knockout 12 can be provided with pressure indication valve
Door, it is simple to the pressure in this section of pretreatment pipeline of real time inspection.
Such as, the arrival end of prime process pipeline is also provided with controlled valve, such that it is able to control flexibly
The sampling of sampling line.
Such as, the arrival end of pretreatment pipeline also can be disposed with controlled valve and pressure reading instument,
Such that it is able to controlled valve is adjusted according to the pressure indicated by pressure reading instument.
Such as, carrier gas tank is also provided with 2, each carrier gas tank is provided with double pressure indicator and
Valve, it is simple to the flow velocity of carrier gas is adjusted by user according to the pressure of instruction.
Such as, FID/FPD chromatograph gas tank is also provided with 2, and each FID/FPD chromatograph is used
Be provided with double pressure indicator and valve on gas tank, it is simple to user according to the pressure of instruction to FID/FPD color
The flow velocity of spectrometer gas is adjusted.
In the above-described embodiments, the sky after the deacidification that the gas pipeline after the deacidification of absorption tower samples out
So gas sample product deliver to prime processing means via sampling line, through insulation in prime processing means, subtract
After pressure, pressure in pipe is down to 3.0Kg/cm2, afterwards from prime processing means out, through heat tracing pipeline
By the natural gas sample delivery after deacidification to pretreatment unit, after entering pretreatment unit, the sky after deacidification
So gas sample product filter out impurity through coalescer and deliver to second depressurized regulation valve, are decompressed to entering of gas chromatograph
Mouth pressure requires (about 1.0～3.0Kg/cm2), additionally unnecessary sample gas is back to work through return pipeline
In skill fuel system, simultaneously by being provided with the safety line of relief valve in case hypertonia.Through two grades
Natural gas sample after the deacidification of decompression enters liquid knockout, is removed by the liquid in gas, then will remove liquid
Three-way switch valve delivered to by natural gas sample after deacidification after body, and mark is accessed on a wherein road of three-way switch valve
Air pipe, the natural gas sample after deacidification is directed at detailed catalogue filter and filters by another road, through filtering
After deacidification after natural gas sample again through the first bypass flow meter, enter gas chromatograph and carry out component
Analyze, obtain CO in the natural gas sample after deacidification2、H2The constituent content of S, thus be raw natural gas
The purification of follow-up phase, liquefaction process take measure targetedly to provide foundation.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, in accompanying drawing
Module or flow process not necessarily implement necessary to the present invention.
One of ordinary skill in the art will appreciate that: the module in device in embodiment can be according to enforcement
Example describes in the device being distributed in embodiment, it is also possible to carries out respective change and is disposed other than the present embodiment
In one or more devices.The module of above-described embodiment can merge into a module, it is also possible to further
Split into multiple submodule.
Last it is noted that above example is only in order to illustrate technical scheme, rather than to it
Limit；Although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in previous embodiment still can be modified by it, or
Wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make relevant art
The essence of scheme departs from the spirit and scope of embodiment of the present invention technical scheme.
Claims (9)
1. the natural gas sampling after the deacidification of absorption tower and a component analysis system, including: gas pipeline,
Gas chromatograph, carrier gas device, it is characterised in that also include: sampling line, prime processing means,
Heat tracing pipe, pretreatment unit, instrument wind apparatus, FID/FPD chromatograph device of air and retracting device,
Wherein:
One end of described sampling line is provided with sample probe, described sample probe and described gas pipeline
It is connected, obtains the natural gas sample after the deacidification in described gas pipeline；
The other end of described sampling line is connected with described prime processing means, after acquired deacidification
Natural gas sample send into described prime processing means carry out being incubated, reducing pressure, wherein said prime process dress
Put and include that prime processes casing, prime processes pipeline, filter, electricity chuck regulate valve and the first electrical heating
Device, described prime processes pipeline and is arranged in described prime process casing, and described prime processes the one of pipeline
End is connected with described sampling line, and described filter and described electricity chuck regulation valve are successively set on described
Prime processes on pipeline, and the natural gas sample after deacidification presss from both sides through described electricity after described filter filters
Set regulation valve carries out being incubated, reducing pressure, and described prime processes in casing and is provided with the first electric heater, to institute
State prime process casing and carry out heating and thermal insulation；
Described heat tracing pipe is connected between the other end and the described pretreatment unit that described prime processes pipeline,
Natural gas sample after the insulation of described prime processing means, post-decompression deacidification is sent into described pre-place
Reason device carries out pretreatment, and wherein said pretreatment unit includes pretreatment casing, pretreatment pipeline, gathers
Knot device, decompression valve, liquid knockout, safety line, three-way switch valve, detailed catalogue filter, the first side
Through-flow gauge and the second electric heater, described pretreatment pipeline is arranged in described pretreatment box body, described
One end of pretreatment pipeline is connected with described heat tracing pipe, described coalescer, described decompression valve, institute
State liquid knockout, described three-way switch valve, described detailed catalogue filter and described first bypass flow meter to set successively
Put on described pretreatment pipeline, enter the natural gas sample after the deacidification of described pretreatment pipeline through institute
State and enter described decompression valve after coalescer filters impurity and reduce pressure, after post-decompression deacidification
Natural gas sample enters described detailed catalogue filter by described three-way switch valve and filters, described pretreatment
The other end of pipeline is connected with the sample gas air inlet pipeline of described gas chromatograph, described sample gas air inlet
Being disposed with sampling switch valve and sampling switch valve on pipeline, described first bypass flow meter is arranged on
The end of described pretreatment pipeline, controls the natural gas sample after deacidification and enters in order to measure CO2、H2S
Flow when the described gas chromatograph of constituent content is analyzed, described second electric heater is arranged on institute
State in pretreatment box body, described pretreatment casing is heated；
The bottom of described coalescer is connected with return pipeline, and described return pipeline is by many in described coalescer
The remaining natural gas sample after deacidification is back to process fuel system, and described return pipeline is disposed with
Second bypass flow meter and check-valves；
Described safety line is connected to the upstream of described three-way switch valve on described pretreatment pipeline and returns with described
On return pipe road between the downstream of described check-valves, described safety line is provided with relief valve, in order to work as
State the pressure in the described pretreatment pipeline before three-way switch valve when exceeding setting value, by described pretreatment
Pressure in pipeline is passed by described safety line and rushes down to described return pipeline；
The bottom of described liquid knockout is connected with the first discharging tube road, and described first discharging tube road is provided with
Controlled valve；
First end of described three-way switch valve is connected with described liquid knockout, the second of described three-way switch valve
End is connected with described detailed catalogue filter, by the natural gas after the deacidification after liquid removed by described liquid knockout
Described in Sample introduction, detailed catalogue filter filters, the 3rd end of described three-way switch valve and calibrating gas pipe
Road is connected；
Described retracting device includes discharge manifold, blowdown piping and the second discharging tube road, described blowdown piping
Be connected between the drain of described gas chromatograph and described discharge manifold, described second discharging tube road with
The drain of described gas chromatograph is connected, and described discharge manifold is provided with recovery gas interface and emptying
Mouthful, it is respectively arranged with controlled valve before wherein said recovery gas interface and described drain；
Described instrument wind apparatus includes instrument wind house steward, instrument wind interface and instrument wind transfer tube, wherein,
Described instrument wind interface is arranged on one end of described instrument wind house steward, is provided with before described instrument wind interface
Controlled valve, described instrument wind transfer tube is connected between described instrument wind house steward and described gas chromatograph；
Described carrier gas device includes carrier gas tank and carrier gas transfer pipe, and wherein, described carrier gas transfer pipe is connected to
Between described gas chromatograph and described carrier gas tank, described carrier gas transfer pipe is provided with controlled valve；
Described FID/FPD chromatograph device of air includes FID/FPD chromatograph gas tank and FID/FPD color
Spectrometer gas transfer tube, wherein, described FID/FPD chromatograph gas transfer tube is connected to described gas phase color
Between spectrometer and described FID/FPD chromatograph gas tank, on described FID/FPD chromatograph gas transfer tube
It is provided with controlled valve.
System the most according to claim 1, it is characterised in that arrange on described instrument wind transfer tube
There is air purifier.
System the most according to claim 1, it is characterised in that described three-way switch valve with described carefully
It is connected with the arm of sample tap on described pretreatment pipeline between mesh filter, described arm is arranged
There is controlled valve.
System the most according to claim 1, it is characterised in that described coalescer and described liquid knockout
Between described pretreatment pipeline on be provided with pressure indication valve door.
System the most according to claim 1, it is characterised in that described prime processes the entrance of pipeline
End is provided with controlled valve.
System the most according to claim 1, it is characterised in that the arrival end of described pretreatment pipeline
It is disposed with controlled valve and pressure reading instument.
System the most according to claim 1, it is characterised in that described carrier gas tank is 2, each
Double pressure indicator and valve it is provided with on described carrier gas tank.
System the most according to claim 1, it is characterised in that described FID/FPD chromatograph is used
Gas tank is 2, and each described FID/FPD chromatograph gas tank is provided with double pressure indicator and valve.
System the most according to claim 1, it is characterised in that described instrument wind transfer tube is 1 ＂
Pipe.
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| CN111024829B (en) * | 2018-10-09 | 2023-02-28 | 中国石油天然气股份有限公司 | Natural gas quality detection system and method |
| CN115372485B (en) * | 2021-05-18 | 2024-01-12 | 中国石油天然气股份有限公司 | Flame luminosity online detection method and system for content of sulfur-containing compounds in natural gas |
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