CN203479781U - After-molecular-sieve-dehydration natural gas sampling and component analyzing system - Google Patents
After-molecular-sieve-dehydration natural gas sampling and component analyzing system Download PDFInfo
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- CN203479781U CN203479781U CN201320608132.3U CN201320608132U CN203479781U CN 203479781 U CN203479781 U CN 203479781U CN 201320608132 U CN201320608132 U CN 201320608132U CN 203479781 U CN203479781 U CN 203479781U
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Abstract
The utility model discloses an after-molecular-sieve-dehydration natural gas sampling and component analyzing system. In the system, one end of a sampling pipe is provided with a sampling probe, and the sampling probe is connected with a natural gas pipe; the other end of the sampling pipe is connected with a front-stage processing device, an obtained dehydrated natural gas sample is fed into the front-stage processing device to conduct heat preservation and pressure reduction, a tracing pipe is connected between the front-stage processing device and a pre-processing device, the dehydrated natural gas sample after heat preservation and pressure reduction by the front-stage processing device is fed into the pre-processing device to be preprocessed, the preprocessed dehydrated natural gas sample enters a first gaseous phase chromatographic instrument for measuring N2 and C6+ components and a second gaseous phase chromatographic instrument for measuring components containing low-range sulfide and low-range CO2 to be analyzed, and the contents of the components in the dehydrated natural gas sample are further obtained.
Description
Technical field
The utility model relates to area of natural gas liquefaction, and the rock gas after a kind of molecular sieve dehydration samples and component analysis system.
Background technology
In world energy sources production, rock gas has accounted for 1/3, and likely progressively instantly very popular oil and coal is extruded into back burner in the near future now.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 becoming after its boiling point (161.5 degrees Celsius) 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, if 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 the purification of follow-up phase, liquefaction process, but the component in centering small-scaled natural gas liquification device each stage of gas deliquescence process how, as the content of each component in the rock gas after molecular sieve dehydration, carry out real-time analysis, obtain in raw natural gas the content of each component accurately, be still a problem.
Utility model content
The utility model provides rock gas sampling and the component analysis system after a kind of molecular sieve dehydration, in order to the content of each component in the rock gas sample to after molecular sieve dehydration in gas deliquescence process, analyzes.
For achieving the above object, the utility model provides rock gas sampling and the component analysis system after a kind of molecular sieve dehydration, this system comprises: gas pipeline, sampling line, prime treating apparatus, trace pipe, pretreatment unit, the first gas chromatograph, the second 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 dehydration in described gas pipeline;
The other end of described sampling line is connected with described prime treating apparatus, rock gas sample after obtained dehydration is sent into 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, one 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 dehydration 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 heating and thermal insulation,
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 dehydration is sent into described pretreatment unit and is carried out pre-service, wherein said pretreatment unit comprises pre-service casing, pre-service pipeline, coalescer, decompression valve, liquid knockout, safety line, three-way switch valve, 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 dehydration of described pre-service pipeline enters described decompression valve and reduces pressure after described coalescer filters out impurities, rock gas sample after post-decompression dehydration enters described detailed catalogue filtrator by described three-way switch valve and filters, the other end of described pre-service pipeline respectively with the first sample gas air inlet pipeline of described the first gas chromatograph, the second sample gas air inlet pipeline of described the second gas chromatograph is connected, described the first sample gas air inlet pipeline, on described the second sample gas air inlet pipeline, be disposed with respectively sampling switch valve and sampling master switch valve, described the first bypass flow meter is arranged on the end of described pre-service pipeline, the rock gas sample of controlling after dehydration enters to measure N
2, C6+ component described the first gas chromatograph and in order to measure containing lower range S compound, lower range CO
2flow when described second gas chromatograph of component 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 process fuel system by the rock gas sample after dehydration 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 upstream of described the above three-way switch valve of pre-service pipeline and the downstream of described the above non-return valve of return pipeline, in described safety line, be provided with safety valve, while surpassing setting value in order to the pressure in the described pre-service pipeline before described three-way switch valve, the pressure in described pre-service pipeline is passed and rushed 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, detailed catalogue filtrator described in rock gas Sample introduction after dehydration after described liquid knockout is removed liquid is filtered, and the 3rd end of described three-way switch valve is connected with calibrating gas pipeline;
Described retracting device comprises discharge manifold, the first blowdown piping, the second blowdown piping, the second discharging tube road and the 3rd discharging tube road, described the first blowdown piping, described the second blowdown piping is connected to the drain of described the first gas chromatograph, between the drain of described the second gas chromatograph and described discharge manifold, described the second discharging tube road, described the 3rd discharging tube road respectively with described the first gas chromatograph, the drain of described the second gas chromatograph is connected, in described discharge manifold, be provided with 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, the first transfer tube, the second transfer tube, wherein, described instrument wind interface is arranged on one end of described instrument wind house steward, be provided with controlled valve before described instrument wind interface, described the first transfer tube, described the second transfer tube are connected between described instrument wind house steward and described the first gas chromatograph, described the second gas chromatograph;
Described carrier gas device comprises the first carrier gas tank, the second carrier gas tank, the first carrier gas transfer tube and the second carrier gas transfer tube, wherein, described the first carrier gas transfer tube, described the second carrier gas transfer tube are connected between described the first gas chromatograph and described the first carrier gas tank, described the second gas chromatograph and described the second carrier gas tank, on described the first carrier gas transfer tube and described the second carrier gas transfer tube, are respectively arranged with controlled valve;
Described FID/FPD chromatograph comprises a FID/FPD chromatograph gas tank with device of air, the 2nd FID/FPD chromatograph gas tank, the one FID/FPD chromatograph use gas transfer tube and the 2nd FID/FPD chromatograph gas transfer tube, wherein, a described FID/FPD chromatograph gas transfer tube, described the 2nd FID/FPD chromatograph use gas transfer tube is connected to described the first gas chromatograph and a described FID/FPD chromatograph gas tank, described the second gas chromatograph and described the 2nd FID/FPD chromatograph are with between gas tank, on a described FID/FPD chromatograph use gas transfer tube and described the 2nd FID/FPD chromatograph use gas transfer tube, be respectively arranged with controlled valve.
Optionally, on described the first transfer tube, described the second transfer tube, be respectively arranged with air purifier.
Optionally, on the described pre-service pipeline between described three-way switch valve and described detailed catalogue filtrator, be connected with the arm of sample tap, on described arm, be provided with controlled valve.
Optionally, on the described pre-service pipeline between described coalescer and described liquid knockout, be provided with pressure indication valve door.
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 the first carrier gas tank, described the second carrier gas tank are respectively 2, are respectively arranged with two pressure indicators and valve described in each on the first carrier gas tank, described the second carrier gas tank.
Optionally, a described FID/FPD for chromatograph gas tank, described the 2nd FID/FPD chromatograph with gas tank, be respectively 2, described in each, FID/FPD gas tank for chromatograph, described the 2nd FID/FPD chromatograph are with being respectively arranged with two pressure indicators and valve on gas tank.
Optionally, described the first transfer tube, described the second transfer tube are respectively 1 ＂ pipe.
In the above-described embodiments, the rock gas sample after the dehydration that the gas pipeline from molecular sieve dehydration samples is out delivered to prime treating apparatus via sampling line, in prime treating apparatus through insulation, after decompression, by Pressure Drop in pipe to 3.0Kg/cm
2afterwards from prime treating apparatus out, through trace pipe road by dehydration after rock gas sample delivery to pretreatment unit, enter after pretreatment unit, rock gas sample after dehydration filters out impurity through coalescer and delivers to 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 process fuel system through return pipeline, the safety line by safety valve is installed is in case hypertonia simultaneously.Rock gas sample after the dehydration of second depressurized enters liquid knockout, liquid in gas is removed, again the rock gas sample after the dehydration of removing 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 detailed catalogue filtrator by the rock gas sample after dehydration and filters, rock gas sample after dehydration after filtering is again through the first bypass flow meter, enter the first gas chromatograph, the second gas chromatograph carries out component analysis, the content of each component in rock gas sample after being dewatered, thereby be the purification of raw natural gas follow-up phase, liquefaction process takes measure targetedly that foundation is provided.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is rock gas sampling and the component analysis system construction drawing after the molecular sieve dehydration of an embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not paying the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is rock gas sampling and the component analysis system construction drawing after the molecular sieve dehydration of an embodiment of the utility model.As shown in the figure, this system comprises: gas pipeline 1, sampling line 2, prime treating apparatus 3, trace pipe, pretreatment unit 20, the first gas chromatograph 36, the second gas chromatograph 37, 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 dehydration in gas pipeline 1;
The other end of sampling line 2 is connected with prime treating apparatus 3, rock gas sample after obtained dehydration is sent into 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, one 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 dehydration is incubated through electric chuck variable valve 5 after filtrator 4 filters, decompression (is generally 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 heating and thermal insulation,
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 dehydration is sent into pretreatment unit 20 and is carried out pre-service, and wherein pretreatment unit 20 comprises pre-service casing, 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, pre-service pipeline is arranged in pre-service casing, and 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 pre-service pipeline, enter rock gas sample after the dehydration of pre-service pipeline and after coalescer 10 filters out impurities, enter decompression valve and carry out second depressurized and (reduce to and can meet the first gas chromatograph 36, the inlet pressure requirement of the second gas chromatograph 37, approximately 1.0～3.0Kg/cm
2), rock gas sample after post-decompression dehydration enters detailed catalogue filtrator 17 by three-way switch valve 14 and filters, the other end of pre-service pipeline respectively with the first sample gas air inlet pipeline of the first gas chromatograph 36, the second sample gas air inlet pipeline (not shown) of the second gas chromatograph 37 is connected, on the first sample gas air inlet pipeline, be disposed with the first sampling switch valve 22 and the first sampling master switch valve 23(in a preferred embodiment, the first 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), on the second sample gas air inlet pipeline, be disposed with the second sampling switch valve and the second sampling master switch valve (not shown), the first bypass flow meter 18 is arranged on the end of pre-service pipeline, the rock gas sample of controlling after dehydration enters to measure N
2, C6+ component the first gas chromatograph 36 and in order to measure containing lower range S compound, lower range CO
2flow when the second gas chromatograph 37 of component is analyzed, the second electric heater 16 is arranged in pre-service casing, and 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 dehydration unnecessary in coalescer 10, on return pipeline, be disposed with the second bypass flow meter 9 and non-return valve 8, be convenient to pipeline and control;
Safety line is connected between the upstream of three-way switch valve 14 on pre-service pipeline and the downstream of return pipeline upper check valve 8, in safety line, be provided with safety valve 11, while surpassing setting value in order to the pressure in the pre-service pipeline before three-way switch valve 14, the pressure in pre-service pipeline is passed and rushed down to return pipeline by safety line;
The bottom of liquid knockout 12 is connected with the first discharging tube road (in figure, 13 is the drain on the first discharging tube road), on the first discharging tube road, is 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 the dehydration of removing after liquid through liquid knockout 12 is filtered, 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, on gas tank 19, be provided with two pressure indicators and valve, in addition, on calibrating gas pipeline, also can be provided with controlled valve;
Retracting device comprises discharge manifold 25, the first blowdown piping 30, the second blowdown piping (not shown), the second discharging tube road 31 and the 3rd discharging tube road (not shown), the first blowdown piping 30, the second blowdown piping is connected to the drain of the first gas chromatograph 36, between the drain of the second gas chromatograph 37 and discharge manifold 25, the second discharging tube road 31, the 3rd discharging tube road respectively with the first gas chromatograph 36, the drain of the second gas chromatograph 37 is connected, in discharge manifold 25, be provided with and reclaim gas interface 21 and drain 26, before wherein reclaiming gas interface 21 and drain 26, be respectively arranged with controlled valve, can control through the first gas chromatograph 36 by controlled valve, the second gas chromatograph 37 is analyzed recovery or the emptying of the rock gas sample after measuring,
Instrument wind apparatus comprises instrument wind house steward 28, instrument wind interface 29, the first transfer tube 27, the second transfer tube (not shown), wherein, instrument wind interface 29 is arranged on one end of instrument wind house steward 28, before instrument wind interface 29, be disposed with controlled valve and pressure-regulating valve, the first transfer tube 27, the second transfer tube are connected between instrument wind house steward 28 and the first gas chromatograph 36, the second gas chromatograph 37;
Carrier gas device comprises the first carrier gas tank 35, the second carrier gas tank (not shown), the first carrier gas transfer tube and the second carrier gas transfer tube (not shown), wherein, the first carrier gas transfer tube, the second carrier gas transfer tube is connected to the first gas chromatograph 36 and the first carrier gas tank 35, between the second gas chromatograph 37 and the second carrier gas tank, on the first carrier gas transfer tube and the second carrier gas transfer tube, be respectively arranged with controlled valve, in addition, the first transfer tube 27, on the second transfer tube, also can be respectively arranged with the first air purifier 33 and the second air purifier (not shown), in order to the instrument wind to being blown into, purify, the first transfer tube 27, the second transfer tube can be respectively 1 ＂ pipe,
FID/FPD chromatograph comprises a gas tank 34 for FID/FPD chromatograph with device of air, the 2nd FID/FPD chromatograph gas tank (not shown), the one FID/FPD chromatograph use gas transfer tube and the 2nd FID/FPD chromatograph use gas transfer tube (not shown), wherein, the one FID/FPD chromatograph gas transfer tube, the 2nd FID/FPD chromatograph use gas transfer tube is connected to the first gas chromatograph 36 and the one gas tank 34 for FID/FPD chromatograph, the second gas chromatograph 37 and the 2nd FID/FPD chromatograph are with between gas tank, on the one FID/FPD chromatograph use gas transfer tube and the 2nd FID/FPD chromatograph use gas transfer tube, be respectively arranged with controlled valve.
For example, on the pre-service pipeline between three-way switch valve 14 and detailed catalogue filtrator 17, be also connected with the arm of sample tap 15, on arm, be provided with controlled valve, the rock gas sample after dehydration is carried out to sample analysis from pre-service pipeline.
For example, on the pre-service pipeline between coalescer 10 and liquid knockout 12, can be provided with pressure indication valve door, be convenient to the pressure in this section of 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 can to controlled valve, regulate according to the indicated pressure of pressure indicating instrument.
For example, the first carrier gas tank, the second carrier gas tank can also be respectively arranged with 2, are provided with two pressure indicators and valve on each first carrier gas tank, the second carrier gas tank, are convenient to user and according to the pressure of indication, the flow velocity of carrier gas are regulated.
For example, the one FID/FPD for chromatograph gas tank, the 2nd FID/FPD chromatograph with gas tank, also can be respectively arranged with 2, each FID/FPD gas tank for chromatograph, the 2nd FID/FPD chromatograph, with being provided with two pressure indicators and valve on gas tank, being convenient to 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 dehydration that the gas pipeline from molecular sieve dehydration samples is out delivered to prime treating apparatus via sampling line, in prime treating apparatus through insulation, after decompression, by Pressure Drop in pipe to 3.0Kg/cm
2afterwards from prime treating apparatus out, through trace pipe road by dehydration after rock gas sample delivery to pretreatment unit, enter after pretreatment unit, rock gas sample after dehydration filters out impurity through coalescer and delivers to 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 process fuel system through return pipeline, the safety line by safety valve is installed is in case hypertonia simultaneously.Rock gas sample after the dehydration of second depressurized enters liquid knockout, liquid in gas is removed, again the rock gas sample after the dehydration of removing 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 detailed catalogue filtrator by the rock gas sample after dehydration and filters, rock gas sample after dehydration after filtering is again through the first bypass flow meter, enter the first gas chromatograph, the second gas chromatograph carries out component analysis, the content of each component in rock gas sample after being dewatered, thereby be the purification of raw natural gas follow-up phase, liquefaction process takes measure targetedly that foundation is provided.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the utility model 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 the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (9)
1. the rock gas after a molecular sieve dehydration samples and component analysis system, it is characterized in that, comprise: gas pipeline, sampling line, prime treating apparatus, trace pipe, pretreatment unit, the first gas chromatograph, the second 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 dehydration in described gas pipeline;
The other end of described sampling line is connected with described prime treating apparatus, rock gas sample after obtained dehydration is sent into 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, one 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 dehydration 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 heating and thermal insulation,
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 dehydration is sent into described pretreatment unit and is carried out pre-service, wherein said pretreatment unit comprises pre-service casing, pre-service pipeline, coalescer, decompression valve, liquid knockout, safety line, three-way switch valve, 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 dehydration of described pre-service pipeline enters described decompression valve and reduces pressure after described coalescer filters out impurities, rock gas sample after post-decompression dehydration enters described detailed catalogue filtrator by described three-way switch valve and filters, the other end of described pre-service pipeline respectively with the first sample gas air inlet pipeline of described the first gas chromatograph, the second sample gas air inlet pipeline of described the second gas chromatograph is connected, described the first sample gas air inlet pipeline, on described the second sample gas air inlet pipeline, be disposed with respectively sampling switch valve and sampling master switch valve, described the first bypass flow meter is arranged on the end of described pre-service pipeline, the rock gas sample of controlling after dehydration enters to measure N
2, C6+ component described the first gas chromatograph and in order to measure containing lower range S compound, lower range CO
2flow when described second gas chromatograph of component 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 process fuel system by the rock gas sample after dehydration 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 upstream of described the above three-way switch valve of pre-service pipeline and the downstream of described the above non-return valve of return pipeline, in described safety line, be provided with safety valve, while surpassing setting value in order to the pressure in the described pre-service pipeline before described three-way switch valve, the pressure in described pre-service pipeline is passed and rushed 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, detailed catalogue filtrator described in rock gas Sample introduction after dehydration after described liquid knockout is removed liquid is filtered, and the 3rd end of described three-way switch valve is connected with calibrating gas pipeline;
Described retracting device comprises discharge manifold, the first blowdown piping, the second blowdown piping, the second discharging tube road and the 3rd discharging tube road, described the first blowdown piping, described the second blowdown piping is connected to the drain of described the first gas chromatograph, between the drain of described the second gas chromatograph and described discharge manifold, described the second discharging tube road, described the 3rd discharging tube road respectively with described the first gas chromatograph, the drain of described the second gas chromatograph is connected, in described discharge manifold, be provided with 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, the first transfer tube, the second transfer tube, wherein, described instrument wind interface is arranged on one end of described instrument wind house steward, be provided with controlled valve before described instrument wind interface, described the first transfer tube, described the second transfer tube are connected between described instrument wind house steward and described the first gas chromatograph, described the second gas chromatograph;
Described carrier gas device comprises the first carrier gas tank, the second carrier gas tank, the first carrier gas transfer tube and the second carrier gas transfer tube, wherein, described the first carrier gas transfer tube, described the second carrier gas transfer tube are connected between described the first gas chromatograph and described the first carrier gas tank, described the second gas chromatograph and described the second carrier gas tank, on described the first carrier gas transfer tube and described the second carrier gas transfer tube, are respectively arranged with controlled valve;
Described FID/FPD chromatograph comprises a FID/FPD chromatograph gas tank with device of air, the 2nd FID/FPD chromatograph gas tank, the one FID/FPD chromatograph use gas transfer tube and the 2nd FID/FPD chromatograph gas transfer tube, wherein, a described FID/FPD chromatograph gas transfer tube, described the 2nd FID/FPD chromatograph use gas transfer tube is connected to described the first gas chromatograph and a described FID/FPD chromatograph gas tank, described the second gas chromatograph and described the 2nd FID/FPD chromatograph are with between gas tank, on a described FID/FPD chromatograph use gas transfer tube and described the 2nd FID/FPD chromatograph use gas transfer tube, be respectively arranged with controlled valve.
2. system according to claim 1, is characterized in that, on described the first transfer tube, described the second transfer tube, is respectively arranged 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 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 the first carrier gas tank, described the second carrier gas tank are respectively 2, is respectively arranged with two pressure indicators and valve described in each on the first carrier gas tank, described the second carrier gas tank.
8. system according to claim 1, it is characterized in that, a described FID/FPD for chromatograph gas tank, described the 2nd FID/FPD chromatograph with gas tank, be respectively 2, described in each, FID/FPD gas tank for chromatograph, described the 2nd FID/FPD chromatograph are with being respectively arranged with two pressure indicators and valve on gas tank.
9. system according to claim 1, is characterized in that, described the first transfer tube, described the second transfer tube are respectively 1 ＂ pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320608132.3U CN203479781U (en) | 2013-09-29 | 2013-09-29 | After-molecular-sieve-dehydration natural gas sampling and component analyzing system |
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| CN201320608132.3U CN203479781U (en) | 2013-09-29 | 2013-09-29 | After-molecular-sieve-dehydration natural gas sampling and component analyzing system |
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| CN203479781U true CN203479781U (en) | 2014-03-12 |
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| CN201320608132.3U Withdrawn - After Issue CN203479781U (en) | 2013-09-29 | 2013-09-29 | After-molecular-sieve-dehydration natural gas sampling and component analyzing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472180A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | Sampling and component-analyzing system of natural gas dewatered by molecular sieve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472180A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | Sampling and component-analyzing system of natural gas dewatered by molecular sieve |
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