CN201191278Y - Polypropylene on-line gas analysis system - Google Patents
Polypropylene on-line gas analysis system Download PDFInfo
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- CN201191278Y CN201191278Y CNU2008200874617U CN200820087461U CN201191278Y CN 201191278 Y CN201191278 Y CN 201191278Y CN U2008200874617 U CNU2008200874617 U CN U2008200874617U CN 200820087461 U CN200820087461 U CN 200820087461U CN 201191278 Y CN201191278 Y CN 201191278Y
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- aspiration pump
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Abstract
The utility model relates to a polypropylene on-line gas analyzing system, which mainly comprises an on-line sampling probe, a sample transmitting pipeline, a sample pre-processing system and an on-line gas analyzer. An output pipe of a flash still is communicated with a first electromagnetic valve in the sampling probe, the first electromagnetic valve is connected with a first filter, a back flushing electromagnetic valve, a pressure reducing valve and a fore air extracting pump, and sample air enters the sample pre-processing system via the sample transmitting pipeline. One gas passage is led in a propylene analyzing system, and the other passage is led in an oxygen analyzing system, a second electromagnetic valve and a third electromagnetic valve which are used to cut off the sample air are respectively arranged on the two passages, both passages are converged together and then enter a second-stage air extracting pump A and a second-stage air extracting pump B respectively. The polypropylene on-line gas analyzing system has the advantages of 1, realizing sampling measurement under a condition of negative pressure, 2, reducing response time while increasing producing efficiency due to continues sampling, processing and detecting, 3, avoiding personal errors caused by manual sampling while collectively directing production.
Description
Technical field
The utility model relates to a kind of online gas analysis system, particularly relates to the online gas analysis system of a kind of polypropylene.
Background technology
Need to detect the sample gas in the flash distillation still in the polypropylene flash distillation production run, flash process is a cyclic process.In normal pressure, detect the oxygen content in the nitrogen, if not exceeding standard, oxygen content carries out next operation, feed intake in the flash distillation still, pressure is up to 1.2MPa, finish feed intake and flash distillation after, carry out pressure release, let out to normal pressure and be evacuated to negative pressure, detect oxygen concentration then, if oxygen content does not exceed standard, then logical nitrogen is replaced, and detects propylene content in the replacement process, propylene content does not exceed standard, and then stops displacement, connects material, connect material finish after, reenter circulation.In this cyclic process, need to detect oxygen and density of propylene, and under different working conditions, carry out.Traditional mode is reserved sample tap and manually-operated gate on the flash distillation still, utilize sampling bag to take a sample, and send the laboratory analyser to analyze then.Because the employing sampling mode vacuumizing under the negative pressure condition, can't be taken a sample, make this operation normally to carry out; Its two, be easy to generate leakage in the artificial sample process, and can residual air in the sampling bag, make the distortion of sample composition; Its three, send the laboratory to analyze from being sampled to, can have long time, make to produce and incur loss through delay, be unfavorable for the raising of production efficiency.
The utility model content
The utility model will solve the defective of above-mentioned prior art, provides a kind of polypropylene online gas analysis system, is used for the concentration of a certain or multiple gases of characterization processes process.
The technical scheme that the invention for solving the technical problem adopts is: the online gas analysis system of this polypropylene, this on-line analysis system mainly comprises online sampling probe, sample transfer line, sample pretreatment system and online gas analyzer, first solenoid valve in the output channel of a flash distillation still and the sampling probe is connected, first solenoid valve successively with first filtrator, blowback solenoid valve, reduction valve and preceding utmost point aspiration pump, sample gas enters sample pretreatment system by the sample transfer line; One the tunnel advances the propylene analytic system, and the oxygen analytic system is advanced on another road, is provided with second solenoid valve and the 3rd solenoid valve that are used to block sample gas in two shunt, and all streams pool together, enters secondary aspiration pump A and secondary aspiration pump B respectively; A divides two-way by the secondary aspiration pump, and one the tunnel is that bypass forms quick loop, is provided with the first flow meter in quick loop, leads up to the 11st solenoid valve, the 12nd solenoid valve, second filtrator, the 3rd flowmeter to be connected with the propylene analyser; By dividing two-way behind the secondary aspiration pump B, the one tunnel is that bypass forms quick loop, is provided with second flowmeter in quick loop, leads up to the 13rd solenoid valve, the 14th solenoid valve, the 3rd filtrator, the 4th flowmeter to be connected with oxygen analyser.
Be provided with full by-pass relief valve between reduction valve described in the utility model and the preceding utmost point aspiration pump.
The output channel of three flash distillation stills enters sample pretreatment system after by three sampling probes in the utility model, in first group of two shunt, be provided with the 5th solenoid valve and the 6th solenoid valve that is used to block sample gas, in second group of two shunt, be provided with the 7th solenoid valve and the 8th solenoid valve that is used to block sample gas, in the 3rd group of two shunt, be provided with the 9th solenoid valve and the tenth solenoid valve that is used to block sample gas, all streams pool together, enter secondary aspiration pump A and secondary aspiration pump B respectively.
The effect that the utility model is useful is: 1, realized the negative pressure condition sampled measurements; 2, sampling, processing and detection are carried out continuously, have reduced the response time, have improved production efficiency; 3, the personal error of avoiding artificial sample to bring can accurate instruction production.
Description of drawings
Fig. 1 is the utility model system construction drawing;
Description of reference numerals: first solenoid valve, 11, the first filtrators 12, blowback solenoid valve 13, reduction valve 14, full by-pass relief valve 15, preceding utmost point aspiration pump 16, the second solenoid valves 21, the 3rd solenoid valve 22, the 4th solenoid valve 23, the five solenoid valves 23, the six solenoid valves 24, the 7th solenoid valve 25, the 8th solenoid valve 26, the 9th solenoid valve 27, the tenth solenoid valve 28, secondary aspiration pump A29, secondary aspiration pump B30, first flow meter 31, the second flowmeters 32, the 11 solenoid valves 33, the 12nd solenoid valve 34, the 13rd solenoid valve 35, the 14th solenoid valve 36, second filtrator 37, the 3rd filtrator 38, the three flowmeters 39, the four flowmeters 40, propylene analyser 41, oxygen analyser 42.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described further:
Referring to Fig. 1, the online gas analysis system of this polypropylene, this on-line analysis system mainly comprises online sampling probe, the sample transfer line, sample pretreatment system and online gas analyzer, first solenoid valve 11 in the output channel of a flash distillation still and the sampling probe (also can/electrical ball valve replacement moving with two ventilations) is connected, first solenoid valve 11 successively with first filtrator 12, blowback solenoid valve 13 (also can adopt threeway Pneumatic/electric ball valve 13), reduction valve 14 and preceding utmost point aspiration pump 16 are provided with full by-pass relief valve 15 between reduction valve 14 and the preceding utmost point aspiration pump 16.Sample gas enters sample pretreatment system by the sample transfer line; One the tunnel advances the propylene analytic system, the oxygen analytic system is advanced on another road, in two shunt, be provided with second solenoid valve 21 and the 3rd solenoid valve 22 that are used to block sample gas, the output channel of other three flash distillation stills enters sample pretreatment system after by three sampling probes, in first group of two shunt, be provided with the 5th solenoid valve 23 and the 6th solenoid valve 24 that are used to block sample gas, in second group of two shunt, be provided with the 7th solenoid valve 25 and the 8th solenoid valve 26 that are used to block sample gas, in the 3rd group of two shunt, be provided with the 9th solenoid valve 27 and the tenth solenoid valve 28 that are used to block sample gas, all streams pool together, enter secondary aspiration pump A29 and secondary aspiration pump B30 respectively.A29 divides two-way by the secondary aspiration pump, and one the tunnel is that bypass forms quick loop, is provided with first flow meter 31 in quick loop, improves response speed.Leading up to the 11st solenoid valve the 33, the 12nd solenoid valve 34, second filtrator 37, the 3rd flowmeter 39 is connected with propylene analyser 41; By dividing two-way behind the secondary aspiration pump B30, one the tunnel is that bypass forms quick loop, be provided with second flowmeter 32 in quick loop, lead up to the 13rd solenoid valve the 35, the 14th solenoid valve 36, the 3rd filtrator 38, the 4th flowmeter 40 to be connected with oxygen analyser 42.The 11st solenoid valve the 33, the 12nd solenoid valve the 34, the 13rd solenoid valve 35 and the 14th solenoid valve 36 also can adopt two five-way valves to replace respectively, this mouthful be used for analyser zero point gas and range gas enter the analyser demarcation of returning to zero.
Aforementioned 4 the road converge into one the tunnel, detect 4 flash distillation stills with analyser, and when needs detected wherein a still, the solenoid valve of the sample gas stream of place still was opened, and detects, and other solenoid valves then cut out, and only carry out one the tunnel and select.
It is pointed out that this example is a kind of mode that realizes, process of gas path can be different with it, and the selection of parts equally also can be inconsistent, just uses diverse ways, can realize.
Claims (3)
1, the online gas analysis system of a kind of polypropylene, it is characterized in that: this on-line analysis system mainly comprises online sampling probe, sample transfer line, sample pretreatment system and online gas analyzer, first solenoid valve (11) in the output channel of a flash distillation still and the sampling probe is connected, first solenoid valve (11) successively with first filtrator (12), blowback solenoid valve (13), reduction valve (14) and preceding utmost point aspiration pump (16), sample gas enters sample pretreatment system by the sample transfer line; One the tunnel advances the propylene analytic system, the oxygen analytic system is advanced on another road, be provided with second solenoid valve (21) and the 3rd solenoid valve (22) that are used to block sample gas in two shunt, all streams pool together, enter secondary aspiration pump A (29) and secondary aspiration pump B (30) respectively; Divide two-way by secondary aspiration pump A (29), one the tunnel is that bypass forms quick loop, be provided with first flow meter (31) in quick loop, lead up to the 11st solenoid valve (33), the 12nd solenoid valve (34), second filtrator (37), the 3rd flowmeter (39) to be connected with propylene analyser (41); Divide two-way by secondary aspiration pump B (30) back, one the tunnel is that bypass forms quick loop, be provided with second flowmeter (32) in quick loop, lead up to the 13rd solenoid valve (35), the 14th solenoid valve (36), the 3rd filtrator (38), the 4th flowmeter (40) to be connected with oxygen analyser (42).
2, the online gas analysis system of polypropylene according to claim 1 is characterized in that: be provided with full by-pass relief valve (15) between described reduction valve (14) and the preceding utmost point aspiration pump (16).
3, the online gas analysis system of polypropylene according to claim 1, it is characterized in that: the output channel of three flash distillation stills enters sample pretreatment system after by three sampling probes, in first group of two shunt, be provided with the 5th solenoid valve (23) and the 6th solenoid valve (24) that are used to block sample gas, in second group of two shunt, be provided with the 7th solenoid valve (25) and the 8th solenoid valve (26) that are used to block sample gas, in the 3rd group of two shunt, be provided with the 9th solenoid valve (27) and the tenth solenoid valve (28) that are used to block sample gas, all streams pool together, enter secondary aspiration pump A (29) and secondary aspiration pump B (30) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200874617U CN201191278Y (en) | 2008-05-15 | 2008-05-15 | Polypropylene on-line gas analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200874617U CN201191278Y (en) | 2008-05-15 | 2008-05-15 | Polypropylene on-line gas analysis system |
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| Publication Number | Publication Date |
|---|---|
| CN201191278Y true CN201191278Y (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200874617U Expired - Fee Related CN201191278Y (en) | 2008-05-15 | 2008-05-15 | Polypropylene on-line gas analysis system |
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| Country | Link |
|---|---|
| CN (1) | CN201191278Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081017A (en) * | 2011-01-18 | 2011-06-01 | 北京雪迪龙科技股份有限公司 | On-line monitoring system for gas |
| CN104820069A (en) * | 2015-04-22 | 2015-08-05 | 上海福劳斯检测技术有限公司 | Online gas analyzer for production field analysis |
| CN105784941A (en) * | 2016-03-23 | 2016-07-20 | 中国科学院光电研究院 | Device and method for analyzing gas in online manner |
| CN106568775A (en) * | 2016-10-24 | 2017-04-19 | 洛阳中硅高科技有限公司 | Online detection apparatus of tetrachlorosilane for optical fibers |
| CN106771078A (en) * | 2017-01-06 | 2017-05-31 | 中国科学院地球化学研究所 | A kind of interface carbon dioxide exchange flux continuous automatic measurement device |
| CN110007049A (en) * | 2019-02-01 | 2019-07-12 | 中国石油天然气集团公司 | A kind of gas pipeline hydrogen sulfide real-time analyzer and real-time analysis method |
| CN110007013A (en) * | 2019-02-01 | 2019-07-12 | 中国石油天然气集团公司 | A kind of gas pipeline gas component real-time analyzer and real-time analysis method |
| CN110057980A (en) * | 2019-05-16 | 2019-07-26 | 广州长德环境研究院有限公司 | A kind of on-line gas analysis instrument state automatic monitoring device |
| CN111830122A (en) * | 2019-04-15 | 2020-10-27 | 岳阳长岭凯美特气体有限公司 | Online oxygen content analysis device |
-
2008
- 2008-05-15 CN CNU2008200874617U patent/CN201191278Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081017A (en) * | 2011-01-18 | 2011-06-01 | 北京雪迪龙科技股份有限公司 | On-line monitoring system for gas |
| CN102081017B (en) * | 2011-01-18 | 2012-10-10 | 北京雪迪龙科技股份有限公司 | On-line monitoring system for gas |
| CN104820069A (en) * | 2015-04-22 | 2015-08-05 | 上海福劳斯检测技术有限公司 | Online gas analyzer for production field analysis |
| CN104820069B (en) * | 2015-04-22 | 2016-06-08 | 上海福劳斯检测技术有限公司 | A kind of gas on-line analyzer analyzed for production scene |
| CN105784941A (en) * | 2016-03-23 | 2016-07-20 | 中国科学院光电研究院 | Device and method for analyzing gas in online manner |
| CN106568775A (en) * | 2016-10-24 | 2017-04-19 | 洛阳中硅高科技有限公司 | Online detection apparatus of tetrachlorosilane for optical fibers |
| CN106771078A (en) * | 2017-01-06 | 2017-05-31 | 中国科学院地球化学研究所 | A kind of interface carbon dioxide exchange flux continuous automatic measurement device |
| CN110007049A (en) * | 2019-02-01 | 2019-07-12 | 中国石油天然气集团公司 | A kind of gas pipeline hydrogen sulfide real-time analyzer and real-time analysis method |
| CN110007013A (en) * | 2019-02-01 | 2019-07-12 | 中国石油天然气集团公司 | A kind of gas pipeline gas component real-time analyzer and real-time analysis method |
| CN111830122A (en) * | 2019-04-15 | 2020-10-27 | 岳阳长岭凯美特气体有限公司 | Online oxygen content analysis device |
| CN110057980A (en) * | 2019-05-16 | 2019-07-26 | 广州长德环境研究院有限公司 | A kind of on-line gas analysis instrument state automatic monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20100515 |