CN1563933A - Capacity setting, loop circulating gas analysis and appts. for constant sulfur instrument - Google Patents
Capacity setting, loop circulating gas analysis and appts. for constant sulfur instrument Download PDFInfo
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- CN1563933A CN1563933A CN 200410023108 CN200410023108A CN1563933A CN 1563933 A CN1563933 A CN 1563933A CN 200410023108 CN200410023108 CN 200410023108 CN 200410023108 A CN200410023108 A CN 200410023108A CN 1563933 A CN1563933 A CN 1563933A
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Abstract
Electrolytic cell, filter and air chamber are setup on pipe connected to reaction furnace so as to form a closed loop. Opening and closing valve and pump on pipe controlled by controlling unit makes circulation of gas to be measured in pipe and air chamber. Extracting gas in constant volume in closed loop measures and calculates sulfur content. In the equipment, closed loop is formed: from reaction furnace, through external communicating pipe, two air chambers, gas valve, filter, electrolytic cell, pump back to reaction furnace. A bypass pipe is connected to inlet and outlet of second air chamber. Two valves are connected to the said bypass pipe, one is connected to reaction furnace, and another is connected to disposal of waste gases device. The invention raises measuring precision since even gas concentration is in chamber and pipe, requires low sensitivity of sensor.
Description
Technical field:
The present invention relates to the method for a kind of measurement solid or liquid combustible sulfur content, be specifically related to a kind of closed cycle method extraction sample that adopts and reach by the designed device of this method, be mainly used in industry or departments such as coal, oil, chemical industry, electric power, scientific research, teaching with the method for analyzing.
Background technology:
At present, constant sulphur appliance in the prior art field adopts the sulfur content in the coulometry mensuration sample, the sulfur dioxide gas that produces after sample burns in reacting furnace is introduced into the filtrator inner filtration by the pipeline that links to each other with the reacting furnace inner chamber, titration in electrolytic cell then, give birth to iodine and electricity according to electricity and give birth to the content that electric weight that bromine consumed is measured sulphur in the sample, adopt the mode of extracting gases in the test process while burning, airshed will be aspired for stability, owing to need continuous drawing gas in the mensuration process, and the distribution of the time of gas concentration is very uneven, therefore, and when gas concentration is low, susceptibility to transducer probe assembly requires height, is difficult to measure accurately.This method is had relatively high expectations to transducer probe assembly and airflow stability, otherwise can influence the accuracy of measurement.
Summary of the invention:
Technical matters to be solved by this invention is the defective that overcomes above-mentioned prior art, provides a kind of low to transducer probe assembly and airflow stability requirement, can accurately measure constant sulphur appliance constant volume, closed cycle analysis method for gases and the device of sulfur content in the sample.
Technical matters of the present invention is to realize by following technical scheme.It is characterized in that it be by with pipeline that the specimen reaction stove communicates on electrolytic cell, filtrator and one or more air chambers of measuring usefulness is set, and make itself and reacting furnace form closed circuit, utilize measurement and control unit to control the unlatching of air valve and air pump set on its pipeline, thereby gas to be measured is circulated in pipeline and air chamber, extract the gas of constant volume then in closed circuit, passing ratio converts to the mensuration of sulfur content in the sample.The present invention comprises reacting furnace, electrolytic cell, filtrator and measurement and control unit according to the designed device of said method, it is characterized in that the external a connecting pipe of described reacting furnace burner hearth cavity, form the closed-loop path with entering in the reacting furnace burner hearth after two or more air chambers, air valve and filtrator, electrolytic cell, air pump are connected in series in regular turn; Into and out of end, be connected to a by-pass pipe at back one air chamber, this pipe is provided with two air valves, is connected to air pump between two air valves, and this air pump is communicated with reacting furnace, is connected with emission-control equipment by another air valve simultaneously.
The present invention adopts closed circuit can make the gas after sample burns fully obtain circulation, can guarantee gas concentration uniformity in its whole air chamber and the pipeline, has improved the accuracy of test, has reduced the susceptibility requirement of sensor side head simultaneously.
Description of drawings:
Fig. 1 is apparatus of the present invention embodiment one synoptic diagram;
Fig. 2 is apparatus of the present invention embodiment two synoptic diagram.
Among the figure:
The 1-reacting furnace; The 2-air chamber; The 3-air valve;
The 4-air valve; The 5-air valve; The 6-air chamber;
The 7-air chamber; The 8-air valve; The 9-air valve;
The 10-filtrator; The 11-air valve; The 12-electrolytic cell;
The 13-air pump; The 14-air valve; The 15-emission-control equipment;
The 16-air valve; The 17-air pump; The 18-air valve;
The 19-measurement and control unit.
Embodiment:
The applicant is through discovering, existing coulometry adopts the assay method of sample extracting gases while burning, because gas flow is to adopt the open type circuit, therefore, the concentration of gas can be very inhomogeneous, thereby can cause the instability of test.The present invention circulates in the loop of a sealing by making the gas after the burning, then by the trend of gas in the operation valve control loop is set, the uneven problem of gas concentration in the time of can solving test, the gas that only extracts less capacity during mensuration gets final product, thereby has realized the technique effect that the present invention will reach.Concrete grammar of the present invention is: establish a connecting pipe and communicate with the specimen reaction stove, one or more air chambers are set on this pipeline simultaneously, air valve, filtrator, the electrolytic cell of air pump and mensuration usefulness, and make itself and reacting furnace form closed circuit, gas can flow in this loop, utilize measurement and control unit to control the unlatching of air valve and air pump set on its pipeline then, thereby gas to be measured is circulated on the pipeline of setting and in the air chamber, in the air chamber of setting, extract the gas of constant volume then, carry out ratiometric conversion by measurement and control unit again, finish mensuration sulfur content in the sample.
The present invention has designed the complete control device of a cover according to said method, Fig. 1 has showed an Application Example of the present invention, it comprises reacting furnace 1, electrolytic cell 12, filtrator 10 and measurement and control unit 19, it is characterized in that at the external a connecting pipe of reacting furnace 1 burner hearth cavity, enter in reacting furnace 1 burner hearth in regular turn with after air chamber 2, air valve 4, air chamber 6, air valve 9, filtrator 10, electrolytic cell 12, air pump 13, air valve 14, air valve 18 are connected in series, form the closed-loop path, gas after the burning can circulate in this closed-loop path, so that it is evenly distributed when being in arbitrary position.Wherein air valve 4 may command gases enter in the air chamber 6, and air valve 9 enters the switch of filtrator 10 for pilot-gas, and air valve 14,18 is the switch of pilot piping closed circuit.At air chamber 6 into and out of end, also be connected to a by-pass pipe, this pipe is provided with air valve 3, air valve 8, be connected to air pump 17 between two air valves, this air pump 17 is communicated with reacting furnace 1, is connected with emission-control equipment 15 by air valve 16 simultaneously, after sample mensuration finishes, can the gentle indoor gas of pipeline be extracted by this air pump 17, discharge, enter next test process by emission-control equipment 15.
For the negative pressure of avoiding the excessive generation of air pressure in the closed-loop path causes the power of gas air pump 13 needs when extracting too big, offer a branch line respectively at air chamber 6 and electrolytic cell 12 inlet ends, can connect with outside air, air valve 5 and air valve 11 are housed respectively on this pipeline, control its keying by it.
As shown in Figure 2, the present invention at air chamber 6 two ends, also can be provided with one or more air chambers 7 of arrangement side by side for fully holding gas.
The course of work of the present invention:
(1) earlier reacting furnace 1 is warming up to 1150 ℃ of constant temperature, keeps simultaneously that the device environment is in steady state (SS) in the pipeline, this moment reacting furnace 1 oven door opening, sample is sent in the burner hearth, air pump 17 is opened, air valve 4,8,18 is opened, all the other air pumps, air valve are closed;
(2) reacting furnace 1 fire door is closed, sample takes fire, and at this moment, air pump 17 is opened, and air valve 4,8,18 is opened, and all the other air pumps, air valve are closed.The gas of sample burning enters at the effect lower edge of air pump 17 air chamber 2, air chamber 6 and forms circulation in reacting furnace 1 burner hearth, makes in air chamber 2,6 and the whole pipeline distribution of gas even;
(3) behind the sample all burnt, oven door opening, at this moment air pump 17, air pump 13 are opened, air valve 5,3,16,14,9 is opened, air valve 4,8,18 is closed, place air chamber 6 interior gases after process filter 10 filters under the effect of air pump 13, to enter electrolytic cell 12 titration, undertaken measuring its sulfur content after the ratiometric conversion by measurement and control unit 19.Simultaneously, waste gas in the air chamber 2 and the waste gas of measuring after finishing enter discharge in the emission-control equipment 15 by air pump 17,13, finish whole mensuration process.
The present invention also can be applicable in the analysers such as spectrum, infrared, galvanochemistry and carries out gas sample and gas composition analysis.
Claims (3)
1, a kind of constant sulphur appliance constant volume, closed cycle analysis method for gases, it is characterized in that it be by with pipeline that the specimen reaction stove communicates on electrolytic cell, filtrator and one or more air chambers of measuring usefulness is set, and make itself and reacting furnace form closed circuit, utilize measurement and control unit to control the unlatching of air valve and air pump set on its pipeline, thereby gas to be measured is circulated in pipeline and air chamber, extract the gas of constant volume then in closed circuit, passing ratio converts to the mensuration of sulfur content in the sample.
2, a kind of constant sulphur appliance constant volume, closed cycle gas analyzing apparatus, comprise reacting furnace (1), electrolytic cell (12), filtrator (10) and measurement and control unit (19), it is characterized in that the external a connecting pipe of described reacting furnace (1) burner hearth cavity, enter formation closed-loop path in reacting furnace (1) burner hearth in regular turn with after air chamber (2), air valve (4), air chamber (6), air valve (9), filtrator (10), electrolytic cell (12), air pump (13), air valve (14), air valve (18) are connected in series; Into and out of end, be connected to a by-pass pipe at air chamber (6), this pipe is provided with air valve (3), air valve (8), is connected to air pump (17) between two air valves, and this air pump (17) is communicated with reacting furnace (1), is connected with emission-control equipment (15) by air valve (16) simultaneously.
3, constant sulphur appliance constant volume according to claim 2, closed cycle gas analyzing apparatus is characterized in that at air chamber (6) two ends, also are provided with one or more air chambers (7) of arrangement side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100231089A CN100334452C (en) | 2004-04-15 | 2004-04-15 | Capacity setting, loop circulating gas analysis and appts. for constant sulfur instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100231089A CN100334452C (en) | 2004-04-15 | 2004-04-15 | Capacity setting, loop circulating gas analysis and appts. for constant sulfur instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563933A true CN1563933A (en) | 2005-01-12 |
| CN100334452C CN100334452C (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100231089A Expired - Fee Related CN100334452C (en) | 2004-04-15 | 2004-04-15 | Capacity setting, loop circulating gas analysis and appts. for constant sulfur instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520013A (en) * | 2011-12-22 | 2012-06-27 | 中国科学技术大学 | Hot-film gas extinguishing chemical concentration sensing module |
| CN105510425A (en) * | 2016-01-29 | 2016-04-20 | 湖南省计量检测研究院 | Coulomb sulfur tester |
| CN108490111A (en) * | 2018-05-21 | 2018-09-04 | 沈阳工程学院 | Constant volume tubular type flame propagation measurement device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426252B (en) * | 2019-07-05 | 2021-09-24 | 北京空间飞行器总体设计部 | Visual microgravity gas trapping test device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU800860A1 (en) * | 1979-04-11 | 1981-01-30 | Предприятие П/Я Р-6900 | Electrohemical gasanalyzer |
| US4532023A (en) * | 1983-03-12 | 1985-07-30 | Kernforschungsanlage Julich Gmbh | Electrochemical gas analyzer for determination of sulphur dioxide content of gases |
| FR2778743B1 (en) * | 1998-05-12 | 2000-06-23 | Elf Exploration Prod | ANALYZER FOR THE CONTINUOUS MEASUREMENT OF THE H2S CONTAINED IN A GAS AND DEVICE INCLUDING IT FOR THE REGULATION OF THE AIR FLOW INJECTED INTO A SULFUROUS H2S OXIDATION REACTOR |
| DE10024947B4 (en) * | 2000-05-22 | 2008-12-04 | Crinotec Gmbh | Method and device for measuring SO2 in wine |
| CN2483718Y (en) * | 2001-03-19 | 2002-03-27 | 长沙三德实业有限公司 | High temp. combustion tube of infrared sulphur analysis instrument |
| CN2591623Y (en) * | 2002-02-08 | 2003-12-10 | 长沙三德实业有限公司 | Automatic industrial analysis meter/sulfur determinator with gate control apparatus |
| DE10321357B4 (en) * | 2002-05-13 | 2007-02-22 | Ech Elektrochemie Halle Gmbh | Method and device for the quantitative determination of individual substances in gas mixtures obtained by oxidative or reductive mineralization of organic compounds |
| CN2704841Y (en) * | 2004-06-18 | 2005-06-15 | 长沙三德实业有限公司 | Volume fixing and closed loop cyclic gas analyzer of sulfur determiner |
-
2004
- 2004-04-15 CN CNB2004100231089A patent/CN100334452C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520013A (en) * | 2011-12-22 | 2012-06-27 | 中国科学技术大学 | Hot-film gas extinguishing chemical concentration sensing module |
| CN102520013B (en) * | 2011-12-22 | 2013-12-11 | 中国科学技术大学 | Hot-film gas extinguishing chemical concentration sensing module |
| CN105510425A (en) * | 2016-01-29 | 2016-04-20 | 湖南省计量检测研究院 | Coulomb sulfur tester |
| CN105510425B (en) * | 2016-01-29 | 2018-08-07 | 湖南省计量检测研究院 | A kind of coulomb of Sulfur inspector |
| CN108490111A (en) * | 2018-05-21 | 2018-09-04 | 沈阳工程学院 | Constant volume tubular type flame propagation measurement device |
| CN108490111B (en) * | 2018-05-21 | 2023-09-01 | 沈阳工程学院 | Constant volume pipe type flame propagation measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100334452C (en) | 2007-08-29 |
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