CN103471877A - System for sampling and component analysis of natural gas generated after absorption tower deacidification - Google Patents
System for sampling and component analysis of natural gas generated after absorption tower deacidification Download PDFInfo
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- CN103471877A CN103471877A CN201310455412XA CN201310455412A CN103471877A CN 103471877 A CN103471877 A CN 103471877A CN 201310455412X A CN201310455412X A CN 201310455412XA CN 201310455412 A CN201310455412 A CN 201310455412A CN 103471877 A CN103471877 A CN 103471877A
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Abstract
The invention discloses a system for sampling and component analysis of natural gas generated after absorption tower deacidification. According to the system for sampling and component analysis of the natural gas generated after absorption tower deacidification, one end of a sampling pipeline is provided with a sampling probe, the sampling probe is connected with a natural gas pipeline, the other end of the sampling pipeline is connected with a early-stage processing device, a natural gas sample obtained after deacidification is delivered to the early-stage processing device, then heat preservation and pressure reduction are conducted on the natural gas sample obtained after deacidification, a tracing pipe is connected between the early-stage processing device and a pre-processing device, the natural gas sample which is generated after heat preservation and pressure reduction are conducted through the early-stage processing device on the natural gas sample obtained after deacidification is delivered to the pre-processing device to be processed, the pre-processed natural gas sample obtained after deacidification enters a gas chromatograph to be analyzed, the gas chromatograph is used for measuring the contents of components including carbon dioxide and hydrogen sulfide, and therefore the contents of components including carbon dioxide and hydrogen sulfide in the natural gas sample obtained after deacidification are obtained.
Description
Technical field
The present invention relates to area of natural gas liquefaction, the rock gas after the depickling of a kind of absorption tower samples and the component analysis system.
Background technology
In the world energy sources production, rock gas has accounted for 1/3 now, and oil and coal that likely in the near future progressively will be instantly very popular be extruded into back burner.Before the year two thousand twenty, the ratio of rock gas in world's energy demand will reach 45%-50%.
Liquefied natural gas (LNG) (Liquefied Natural Gas, LNG) be that natural gas via compresses, is cooled to the liquid become after its boiling point (161.5 degrees centigrade) temperature, its principal ingredient is methane, being recognized is the energy the cleanest on the earth, colourless, tasteless, nontoxic and non-corrosiveness, its volume is about with 1/600 of amount gaseous natural gas volume, and the weight of liquefied natural gas (LNG) is only 45% left and right of consubstantiality ponding.The manufacture process of liquefied natural gas (LNG) is the natural gas purification processing of first gas field being produced, and after a succession of ultralow temperature liquefaction, obtains.
Current, middle-size and small-size natural gas liquefaction device, as scale is 200 * 10
4nm
3/ d(normal cubic metre/sky) natural gas liquefaction device, still belong at home pioneering, in the process of natural gas liquefaction, if can obtain in real time the component concentration of rock gas in each stage of liquefaction, to take measure targetedly that foundation is provided to purification, the liquefaction process of follow-up phase, but the component in centering small-scaled natural gas liquification device each stage of gas deliquescence process how, as CO in the rock gas after the depickling of absorption tower
2, H
2the component concentration of S, carry out real-time analysis, obtains in raw natural gas the content of each component accurately, is still a problem.
Summary of the invention
The invention provides rock gas sampling and component analysis system after the depickling of a kind of absorption tower, in order to CO in the rock gas sample to after absorption tower depickling in gas deliquescence process
2, H
2the component concentration of S is analyzed.
For achieving the above object, the invention provides rock gas sampling and component analysis system after the depickling of a kind of absorption tower, comprise: gas pipeline, sampling line, prime treating apparatus, trace pipe, pretreatment unit, gas chromatograph, instrument wind apparatus, carrier gas device, FID(Flame Ionization Detector, flame ionic detector)/FPD(Flame Photometric Detector, flame photometric detector (FPD)) with device of air and retracting device, wherein:
One end of described sampling line is provided with sample probe, and described sample probe is connected with described gas pipeline, obtains the rock gas sample after the depickling in described gas pipeline;
The other end of described sampling line is connected with described prime treating apparatus, rock gas sample after obtained depickling is sent into to described prime treating apparatus to be incubated, decompression, wherein said prime treating apparatus comprises prime processing casing, prime is processed pipeline, filtrator, electricity chuck variable valve and the first electric heater, described prime is processed pipeline and is arranged in described prime processing casing, the end that described prime is processed pipeline is connected with described sampling line, described filtrator and described electric chuck variable valve are successively set on described prime and process on pipeline, rock gas sample after depickling is incubated through described electric chuck variable valve after described filtrator filters, decompression, described prime is processed in casing and is provided with the first electric heater, described prime is processed to casing and carry out heat tracing,
Described trace pipe is connected to described prime and processes between the other end and described pretreatment unit of pipeline, will be through described prime treating apparatus insulation, rock gas sample after post-decompression depickling is sent into described pretreatment unit and is carried out pre-service, wherein said pretreatment unit comprises the pre-service casing, the pre-service pipeline, coalescer, decompression valve, liquid knockout, safety line, three-way switch valve, the detailed catalogue filtrator, the first bypass flow meter and the second electric heater, described pre-service pipeline is arranged in described pre-service casing, one end of described pre-service pipeline is connected with described trace pipe, described coalescer, described decompression valve, described liquid knockout, described three-way switch valve, described detailed catalogue filtrator and described the first bypass flow meter are successively set on described pre-service pipeline, enter rock gas sample after the depickling of described pre-service pipeline enters described decompression valve and is reduced pressure after described coalescer filters out impurities, rock gas sample after post-decompression depickling enters described detailed catalogue filtrator by described three-way switch valve and is filtered, the other end of described pre-service pipeline is connected with the sample gas air inlet pipeline of described gas chromatograph, be disposed with sampling switch valve and sampling master switch valve on described sample gas air inlet pipeline, described the first bypass flow meter is arranged on the end of described pre-service pipeline, rock gas sample after the control depickling enters to measure CO
2, H
2flow when the described gas chromatograph of S component concentration is analyzed, described the second electric heater is arranged in described pre-service casing, and described pre-service casing is heated,
The bottom of described coalescer is connected with return pipeline, and described return pipeline is back to the process fuel system by the rock gas sample after depickling unnecessary in described coalescer, is disposed with the second bypass flow meter and non-return valve on described return pipeline;
Described safety line is connected between the downstream of the upstream of described the above three-way switch valve of pre-service pipeline and described the above non-return valve of return pipeline, be provided with safety valve on described safety line, while in order to the pressure in the described pre-service pipeline before described three-way switch valve, surpassing setting value, the pressure in described pre-service pipeline is passed and rushes down to described return pipeline by described safety line;
The bottom of described liquid knockout is connected with the first discharging tube road, on described the first discharging tube road, is provided with controlled valve;
The first end of described three-way switch valve is connected with described liquid knockout, the second end of described three-way switch valve is connected with described detailed catalogue filtrator, the described detailed catalogue filtrator of rock gas Sample introduction after will the depickling after described liquid knockout is removed liquid is filtered, and the 3rd end of described three-way switch valve is connected with the calibrating gas pipeline;
Described retracting device comprises discharge manifold, blowdown piping and the second discharging tube road, described blowdown piping is connected between the drain and described discharge manifold of described gas chromatograph, described the second discharging tube road is connected with the drain of described gas chromatograph, be provided with on described discharge manifold and reclaim gas interface and drain, before wherein said recovery gas interface and described drain, be respectively arranged with controlled valve;
Described instrument wind apparatus comprises instrument wind house steward, instrument wind interface and instrument wind transfer tube, wherein, described instrument wind interface is arranged on described instrument wind house steward's a end, be provided with controlled valve before described instrument wind interface, described instrument wind transfer tube is connected between described instrument wind house steward and described gas chromatograph;
Described carrier gas device comprises carrier gas tank and carrier gas transfer tube, and wherein, described carrier gas transfer tube is connected between described gas chromatograph and described carrier gas tank, on described carrier gas transfer tube, is provided with controlled valve;
Described FID/FPD chromatograph comprises gas tank and FID/FPD chromatograph gas transfer tube for the FID/FPD chromatograph with device of air, wherein, described FID/FPD chromatograph use gas transfer tube is connected to described gas chromatograph and described FID/FPD chromatograph is used between gas tank, on described FID/FPD chromatograph use gas transfer tube, is provided with controlled valve.
Optionally, be provided with air purifier on described instrument wind transfer tube.
Optionally, be connected with the arm of sample tap on the described pre-service pipeline between described three-way switch valve and described detailed catalogue filtrator, on described arm, be provided with controlled valve.
Optionally, be provided with the pressure indication valve door on the described pre-service pipeline between described coalescer and described liquid knockout.
Optionally, the inlet end of described prime processing pipeline is provided with controlled valve.
Optionally, the inlet end of described pre-service pipeline is disposed with controlled valve and pressure indicating instrument.
Optionally, described carrier gas tank is 2, is provided with two pressure indicators and valve on each described carrier gas tank.
Optionally, described FID/FPD chromatograph gas tank is 2, and each described FID/FPD chromatograph is with being provided with two pressure indicators and valve on gas tank.
Optionally, described instrument wind transfer tube is 1 ＂ pipe.
In the above-described embodiments, the rock gas sample after the depickling that the gas pipeline from the depickling of absorption tower samples is out delivered to the prime treating apparatus via sampling line, in the prime treating apparatus through the insulation, after decompression, by Pressure Drop in pipe to 3.0Kg/cm
2afterwards from the prime treating apparatus out, through the trace pipe road by the rock gas sample delivery after depickling to pretreatment unit, after entering pretreatment unit, rock gas sample after depickling filters out impurity through coalescer and delivers to the second depressurized variable valve, and the inlet pressure that is decompressed to gas chromatograph requires (about 1.0～3.0Kg/cm
2), in addition unnecessary sample gas being back in the process fuel system through return pipeline, the safety line by safety valve is installed is in case hypertonia simultaneously.Rock gas sample after the depickling of second depressurized enters liquid knockout, liquid in gas is removed, the rock gas sample that to remove again after the depickling after liquid is delivered to three-way switch valve, a wherein road access gas pipeline of three-way switch valve, another road is directed at the detailed catalogue filtrator by the rock gas sample after depickling and is filtered, rock gas sample after the depickling after filtering, again through the first bypass flow meter, enters gas chromatograph and carries out component analysis, obtains CO in the rock gas sample after depickling
2, H
2the component concentration of S, provide foundation thereby take measure targetedly for purification, the liquefaction process of raw natural gas follow-up phase.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Rock gas sampling and component analysis system construction drawing after the absorption tower depickling that Fig. 1 is one embodiment of the invention.
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 clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not paying under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
Rock gas sampling and component analysis system construction drawing after the absorption tower depickling that Fig. 1 is one embodiment of the invention.As shown in the figure, this system comprises: gas pipeline 1, sampling line 2, prime treating apparatus 3, trace 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, obtains the rock gas sample after the depickling in gas pipeline 1;
The other end of sampling line 2 is connected with prime treating apparatus 3, rock gas sample after obtained depickling is sent into to prime treating apparatus 3 to be incubated, decompression, wherein prime treating apparatus 3 comprises prime processing casing, prime is processed pipeline, filtrator 4, electricity chuck variable valve 5 and the first electric heater 6, prime is processed pipeline and is arranged in prime processing casing, the end that prime is processed pipeline is connected with sampling line 2, filtrator 4 and electric chuck variable valve 5 are successively set on prime and process on pipeline, rock gas sample after depickling is incubated through electric chuck variable valve 5 after filtrator 4 filters, decompression (generally is down to 3.0Kg/cm
2), prime is processed in casing and is provided with the first electric heater 6, prime is processed to casing and carry out heat tracing,
Trace pipe is connected to prime and processes between the other end and pretreatment unit 20 of pipeline, will be through 3 insulations of prime treating apparatus, rock gas sample after post-decompression depickling is sent into pretreatment unit 20 and is carried out pre-service, wherein pretreatment unit 20 comprises the pre-service casing, the pre-service pipeline, coalescer 10, decompression valve, liquid knockout 12, safety line, three-way switch valve 14, detailed catalogue filtrator 17, the first bypass flow meter 18 and the second electric heater 16, the pre-service pipeline is arranged in the pre-service casing, one end of pre-service pipeline is connected with trace pipe, coalescer 10, decompression valve, liquid knockout 12, three-way switch valve 14, detailed catalogue filtrator 17 and the first bypass flow meter 18 are successively set on the pre-service pipeline, enter rock gas sample after the depickling of pre-service pipeline enters decompression valve and carries out second depressurized and (reduce to the inlet pressure requirement that can meet gas chromatograph after coalescer 10 filters out impurities, about 1.0～3.0Kg/cm
2), rock gas sample after post-decompression depickling enters detailed catalogue filtrator 17 by three-way switch valve 14 and is filtered, the other end of pre-service pipeline is connected with the sample gas air inlet pipeline of gas chromatograph 36, be disposed with sampling switch valve 22 and sampling master switch valve 23(on the sample gas air inlet pipeline in a preferred embodiment, sampling master switch valve 23 also can connect other pipeline 24 for sampling, and the sample gas in the pipeline of selecting to analyze by the sampling switch valve on each pipeline), the first bypass flow meter 18 is arranged on the end of pre-service pipeline, rock gas sample after the control depickling enters to measure CO
2, H
2the flow when gas chromatograph 36 of S component concentration is analyzed, the second electric heater 16 is arranged in the pre-service casing, and the pre-service casing is heated,
The bottom of coalescer 10 is connected with return pipeline, return pipeline is back to process fuel system (interface of the 7 process fuel pipes for return pipeline and process fuel system in figure) by the rock gas sample after depickling unnecessary in coalescer 10, be disposed with the second bypass flow meter 9 and non-return valve 8 on return pipeline, be convenient to pipeline and control;
Safety line is connected between the downstream of the upstream of three-way switch valve 14 on the pre-service pipeline and return pipeline upper check valve 8, be provided with safety valve 11 on safety line, while in order to the pressure in the pre-service pipeline before three-way switch valve 14, surpassing setting value, the pressure in the pre-service pipeline is passed and rushes down to return pipeline by safety line;
The bottom of liquid knockout 12 and the first discharging tube road (in figure 13 be the first discharging tube road drain) are connected, and on the first discharging tube road, are provided with controlled valve;
The first end of three-way switch valve 14 is connected with liquid knockout 12, the second end of three-way switch valve 14 is connected with detailed catalogue filtrator 17, rock gas Sample introduction detailed catalogue filtrator 17 after will the depickling after liquid knockout 12 is removed liquid is filtered, the 3rd end of three-way switch valve 14 is connected with the calibrating gas pipeline, in figure, 19 is the gas tank be connected with the calibrating gas pipeline, be provided with two pressure indicators and valve on gas tank 19, in addition, on the calibrating gas pipeline, also can be provided with controlled valve;
Retracting device comprises discharge manifold 25, blowdown piping 30 and the second discharging tube road 31, blowdown piping 30 is connected between the drain and discharge manifold 25 of gas chromatograph 36, the second discharging tube road 31, with the drain of gas chromatograph 36, be connected, be provided with on discharge manifold 25 and reclaim gas interface 21 and drain 26, be respectively arranged with controlled valve before wherein reclaiming gas interface 21 and drain 26, can control recovery or the emptying of analyzing the rock gas sample after measuring through gas chromatograph 36 by controlled valve;
The instrument wind apparatus comprises instrument wind house steward 28, instrument wind interface 29, instrument wind transfer tube 27, wherein, instrument wind interface 29 is arranged on an end of instrument wind house steward 28, be disposed with controlled valve and pressure-regulating valve before instrument wind interface 29, instrument wind transfer tube 27 is connected between instrument wind house steward 28 and gas chromatograph 36, in addition, on instrument wind transfer tube 27, is provided with air purifier 33, in order to the instrument wind to being blown into, purified, instrument wind transfer tube is 1 ＂ pipe;
Carrier gas device comprises carrier gas tank 35, carrier gas transfer tube, and wherein, the carrier gas transfer tube is connected between gas chromatograph 36 and carrier gas tank 35, on the carrier gas transfer tube, is provided with controlled valve;
The FID/FPD chromatograph comprises gas tank 34 for the FID/FPD chromatograph, FID/FPD chromatograph gas transfer tube with device of air, wherein, FID/FPD chromatograph use gas transfer tube is connected to gas chromatograph 36 and the FID/FPD chromatograph is used between gas tank 34, on FID/FPD chromatograph use gas transfer tube, is provided with controlled valve.
For example, also be connected with the arm of sample tap 15 on the pre-service pipeline between three-way switch valve 14 and detailed catalogue filtrator 17, be provided with controlled valve on arm, from the pre-service pipeline, the rock gas sample after depickling is carried out to sample analysis.
For example, on the pre-service pipeline between coalescer 10 and liquid knockout 12, can be provided with the pressure indication valve door, be convenient to the pressure in this section pre-service pipeline of real time inspection.
For example, the inlet end that prime is processed pipeline also can be provided with controlled valve, thereby can control flexibly the sampling of sampling line.
For example, the inlet end of pre-service pipeline also can be disposed with controlled valve and pressure indicating instrument, thereby pressure that can be indicated according to the pressure indicating instrument is regulated controlled valve.
For example, carrier gas tank can also be provided with 2, is provided with two pressure indicators and valve on each carrier gas tank, is convenient to the user and according to the pressure of indication, the flow velocity of carrier gas is regulated.
For example, the FID/FPD chromatograph also can be provided with 2 with gas tank, and each FID/FPD chromatograph, with being provided with two pressure indicators and valve on gas tank, being convenient to the user and according to the pressure of indication, the flow velocity of FID/FPD chromatograph use gas being regulated.
In the above-described embodiments, the rock gas sample after the depickling that the gas pipeline from the depickling of absorption tower samples is out delivered to the prime treating apparatus via sampling line, in the prime treating apparatus through the insulation, after decompression, by Pressure Drop in pipe to 3.0Kg/cm
2afterwards from the prime treating apparatus out, through the trace pipe road by the rock gas sample delivery after depickling to pretreatment unit, after entering pretreatment unit, rock gas sample after depickling filters out impurity through coalescer and delivers to the second depressurized variable valve, and the inlet pressure that is decompressed to gas chromatograph requires (about 1.0～3.0Kg/cm
2), in addition unnecessary sample gas being back in the process fuel system through return pipeline, the safety line by safety valve is installed is in case hypertonia simultaneously.Rock gas sample after the depickling of second depressurized enters liquid knockout, liquid in gas is removed, the rock gas sample that to remove again after the depickling after liquid is delivered to three-way switch valve, a wherein road access gas pipeline of three-way switch valve, another road is directed at the detailed catalogue filtrator by the rock gas sample after depickling and is filtered, rock gas sample after the depickling after filtering, again through the first bypass flow meter, enters gas chromatograph and carries out component analysis, obtains CO in the rock gas sample after depickling
2, H
2the component concentration of S, provide foundation thereby take measure targetedly for purification, the liquefaction process of raw natural gas follow-up phase.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, and the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing previous embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the present invention technical scheme.
Claims (9)
1. the sampling of the rock gas after an absorption tower depickling and component analysis system, it is characterized in that, comprise: gas pipeline, sampling line, prime treating apparatus, trace pipe, pretreatment unit, gas chromatograph, instrument wind apparatus, carrier gas device, FID/FPD chromatograph device of air and retracting device, wherein:
One end of described sampling line is provided with sample probe, and described sample probe is connected with described gas pipeline, obtains the rock gas sample after the depickling in described gas pipeline;
The other end of described sampling line is connected with described prime treating apparatus, rock gas sample after obtained depickling is sent into to described prime treating apparatus to be incubated, decompression, wherein said prime treating apparatus comprises prime processing casing, prime is processed pipeline, filtrator, electricity chuck variable valve and the first electric heater, described prime is processed pipeline and is arranged in described prime processing casing, the end that described prime is processed pipeline is connected with described sampling line, described filtrator and described electric chuck variable valve are successively set on described prime and process on pipeline, rock gas sample after depickling is incubated through described electric chuck variable valve after described filtrator filters, decompression, described prime is processed in casing and is provided with the first electric heater, described prime is processed to casing and carry out heat tracing,
Described trace pipe is connected to described prime and processes between the other end and described pretreatment unit of pipeline, will be through described prime treating apparatus insulation, rock gas sample after post-decompression depickling is sent into described pretreatment unit and is carried out pre-service, wherein said pretreatment unit comprises the pre-service casing, the pre-service pipeline, coalescer, decompression valve, liquid knockout, safety line, three-way switch valve, the detailed catalogue filtrator, the first bypass flow meter and the second electric heater, described pre-service pipeline is arranged in described pre-service casing, one end of described pre-service pipeline is connected with described trace pipe, described coalescer, described decompression valve, described liquid knockout, described three-way switch valve, described detailed catalogue filtrator and described the first bypass flow meter are successively set on described pre-service pipeline, enter rock gas sample after the depickling of described pre-service pipeline enters described decompression valve and is reduced pressure after described coalescer filters out impurities, rock gas sample after post-decompression depickling enters described detailed catalogue filtrator by described three-way switch valve and is filtered, the other end of described pre-service pipeline is connected with the sample gas air inlet pipeline of described gas chromatograph, be disposed with sampling switch valve and sampling master switch valve on described sample gas air inlet pipeline, described the first bypass flow meter is arranged on the end of described pre-service pipeline, rock gas sample after the control depickling enters to measure CO
2, H
2flow when the described gas chromatograph of S component concentration is analyzed, described the second electric heater is arranged in described pre-service casing, and described pre-service casing is heated,
The bottom of described coalescer is connected with return pipeline, and described return pipeline is back to the process fuel system by the rock gas sample after depickling unnecessary in described coalescer, is disposed with the second bypass flow meter and non-return valve on described return pipeline;
Described safety line is connected between the downstream of the upstream of described the above three-way switch valve of pre-service pipeline and described the above non-return valve of return pipeline, be provided with safety valve on described safety line, while in order to the pressure in the described pre-service pipeline before described three-way switch valve, surpassing setting value, the pressure in described pre-service pipeline is passed and rushes down to described return pipeline by described safety line;
The bottom of described liquid knockout is connected with the first discharging tube road, on described the first discharging tube road, is provided with controlled valve;
The first end of described three-way switch valve is connected with described liquid knockout, the second end of described three-way switch valve is connected with described detailed catalogue filtrator, the described detailed catalogue filtrator of rock gas Sample introduction after will the depickling after described liquid knockout is removed liquid is filtered, and the 3rd end of described three-way switch valve is connected with the calibrating gas pipeline;
Described retracting device comprises discharge manifold, blowdown piping and the second discharging tube road, described blowdown piping is connected between the drain and described discharge manifold of described gas chromatograph, described the second discharging tube road is connected with the drain of described gas chromatograph, be provided with on described discharge manifold and reclaim gas interface and drain, before wherein said recovery gas interface and described drain, be respectively arranged with controlled valve;
Described instrument wind apparatus comprises instrument wind house steward, instrument wind interface and instrument wind transfer tube, wherein, described instrument wind interface is arranged on described instrument wind house steward's a end, be provided with controlled valve before described instrument wind interface, described instrument wind transfer tube is connected between described instrument wind house steward and described gas chromatograph;
Described carrier gas device comprises carrier gas tank and carrier gas transfer tube, and wherein, described carrier gas transfer tube is connected between described gas chromatograph and described carrier gas tank, on described carrier gas transfer tube, is provided with controlled valve;
Described FID/FPD chromatograph comprises gas tank and FID/FPD chromatograph gas transfer tube for the FID/FPD chromatograph with device of air, wherein, described FID/FPD chromatograph use gas transfer tube is connected to described gas chromatograph and described FID/FPD chromatograph is used between gas tank, on described FID/FPD chromatograph use gas transfer tube, is provided with controlled valve.
2. system according to claim 1, is characterized in that, on described instrument wind transfer tube, is provided with air purifier.
3. system according to claim 1, is characterized in that, is connected with the arm of sample tap on the described pre-service pipeline between described three-way switch valve and described detailed catalogue filtrator, on described arm, is provided with controlled valve.
4. system according to claim 1, is characterized in that, on the described pre-service pipeline between described coalescer and described liquid knockout, is provided with the pressure indication valve door.
5. system according to claim 1, is characterized in that, the inlet end that described prime is processed pipeline is provided with controlled valve.
6. system according to claim 1, is characterized in that, the inlet end of described pre-service pipeline is disposed with controlled valve and pressure indicating instrument.
7. system according to claim 1, is characterized in that, described carrier gas tank is 2, is provided with two pressure indicators and valve on each described carrier gas tank.
8. system according to claim 1, is characterized in that, described FID/FPD chromatograph gas tank is 2, and each described FID/FPD chromatograph is with being provided with two pressure indicators and valve on gas tank.
9. system according to claim 1, is characterized in that, described instrument wind transfer tube is 1 ＂ pipe.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111024829A (en) * | 2018-10-09 | 2020-04-17 | 中国石油天然气股份有限公司 | Natural gas quality detection system and method |
| CN113252865A (en) * | 2021-06-03 | 2021-08-13 | 四川铭鉴知源科技有限公司 | Hydrogen sulfide pretreatment gas circuit system |
| WO2022242669A1 (en) * | 2021-05-18 | 2022-11-24 | 中国石油天然气股份有限公司 | Method and system for flame photometric online detection of sulfur-containing compound content in natural gas |
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| CN113252865A (en) * | 2021-06-03 | 2021-08-13 | 四川铭鉴知源科技有限公司 | Hydrogen sulfide pretreatment gas circuit system |
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