CN102346196A - Sample gas cycle method for H2S/SO2 ratio analyzer - Google Patents
Sample gas cycle method for H2S/SO2 ratio analyzer Download PDFInfo
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- CN102346196A CN102346196A CN2010102450974A CN201010245097A CN102346196A CN 102346196 A CN102346196 A CN 102346196A CN 2010102450974 A CN2010102450974 A CN 2010102450974A CN 201010245097 A CN201010245097 A CN 201010245097A CN 102346196 A CN102346196 A CN 102346196A
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- sample gas
- analyzer
- gas cycle
- air pump
- appearance
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Abstract
The invention relates to a sample gas cycle method for a H2S/SO2 ratio analyzer, belongs to the technical field of analytical instrument, and specifically relates to a new sample gas cycle method, which is provided for an analyzer, and especially for a sulfur recovery system tail gas analyzer. According to the method, an air ejector pump adopting instrument wind as power is arranged in a sample gas flow circuit to form the sample gas cycle method of the ratio analyzer. The method provided by the present invention is a new method for realizing the sample gas cycle of the analyzer by using the instrument wind under a state of no power supply; the used air ejector pump does not comprise movable parts, such that the method has high reliability and long service life, and is suitable for the occasions of petrochemical enterprises, wherein the occasions have explosion-proof requirements.
Description
Technical field: the invention belongs to technical field of analytical instruments, be specifically related to a kind of new method of appearance gas round-robin of a kind of analyser that is applied to, particularly sulfur recovery system exhaust analyzer.
Background technology: at present, analyser often need be drawn equipment with appearance gas when the appearance gas of technology object is analyzed, send into analyser, and the appearance gas that comes out from analyser need be sent process equipment back to by environmental protection and safe requirement.This generally needs an electronic aspiration pump to accomplish this requirement.But electronic aspiration pump generic failure rate is higher, and is less compliant in the occasion of requirement of explosion proof.
Goal of the invention: the object of the invention is the drawback that overcomes prior art, and a kind of the utilization with the air that proposes is the jetting pump generation negative pressure of power, realizes appearance gas is extracted out from process equipment, after appearance gas is through analyser, the appearance pneumatic transmission is returned the H of process pipe again
2S and SO
2The appearance gas circulation new method of proportion grading appearance.
The present invention realizes like this: the proportion grading appearance directly is installed on the exhaust pipe; Appearance gas behind the passing ratio analyser directly turns back to same pipeline rear; It is characterized in that for make kind gas by shown in requirement flow; And keep certain tolerance; In its kind airflow loop, being provided with instrument wind is the ejector air pump of power, thus composition analyser appearance gas recycle design.
Ejector air pump is to utilize instrument wind as power, produces a negative pressure through the high velocity air at the larynx joint place of ejector air pump, and its principle is identical with the Venturi tube principle.
Usually, the aperture of the larynx of described ejector air pump joint is 2mm, and the import and export aperture of ejector air pump is 10mm, and the gas speed at ejector air pump larynx joint place is 25 times of inlet.
The present invention is under non-powered state, utilizes instrument wind to realize a kind of new method of appearance gas round-robin of analyser.The ejector air pump that is adopted does not have movable member, so the method reliability is high, the life-span is long, is fit to the occasion of petroleum chemical enterprise's requirement of explosion proof.
Description of drawings: accompanying drawing 1 is that the appearance gas round-robin method of the embodiment of the invention connects synoptic diagram.
Embodiment: the present invention is further described below in conjunction with accompanying drawing and embodiment.
Embodiment
Shown in accompanying drawing 1; The proportion grading appearance is the crucial instrument in the sulfur recovery unit; For analyser can be responded by the variation of analysis process gas ingredients fast; Analyser directly is installed on the exhaust pipe; Appearance gas through behind the analyser directly turns back to same pipeline rear; For make kind gas by shown in requirement flow, and keep certain tolerance, in its kind airflow loop, establishing one is the ejector air pump of power with instrument wind.Component analysis appearance appearance gas recycle design thus.
The aperture of the ejector air pump larynx joint that present embodiment adopts is 2mm, and the import and export aperture of ejector air pump is 10mm, and the gas speed at ejector air pump larynx joint place is 25 times of inlet.
Ejector air pump produces a negative pressure under the pneumatic force urges of instrument, with the sucking-off from process pipe of gas appearance, and with return process pipe after instrument wind mixes, present embodiment ejector air pump test parameter is following:
| Flow (m 3/h) | 1.0 | 1.5 | 2.0 | 3.5 | 3.0 |
| Negative pressure (KPa) | 0.135 | 0.265 | 0.465 | 0.705 | 1.085 |
Can know from above data, at 3m
3Under/h the flow, the aspiration pump negative pressure is 1KPa, and this differential pressure is enough to make sampling air-flow ability proper flow.Under the normal condition at 1.5m
3During/h flow and differential pressure be to get final product operate as normal under the 0.265Kpa condition.
Claims (2)
1.H
2S and SO
2The appearance gas round-robin method of proportion grading appearance, it is characterized in that in its kind airflow loop, being provided with instrument wind is the ejector air pump of power.
2. appearance gas round-robin method as claimed in claim 1 is characterized in that the aperture of the larynx joint of said ejector air pump is 2mm, and the import and export aperture of ejector air pump is 10mm, and the gas speed at ejector air pump larynx joint place is 25 times of inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102450974A CN102346196A (en) | 2010-08-04 | 2010-08-04 | Sample gas cycle method for H2S/SO2 ratio analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102450974A CN102346196A (en) | 2010-08-04 | 2010-08-04 | Sample gas cycle method for H2S/SO2 ratio analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102346196A true CN102346196A (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102450974A Pending CN102346196A (en) | 2010-08-04 | 2010-08-04 | Sample gas cycle method for H2S/SO2 ratio analyzer |
Country Status (1)
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| CN (1) | CN102346196A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342905A (en) * | 2001-10-30 | 2002-04-03 | 南化集团研究院 | Sampling system of in-line ultraviolet absorption photometric analyzer |
| CN2711722Y (en) * | 2004-07-05 | 2005-07-20 | 鞍山盛科电子有限公司 | Analysis instrument for moisture content of oil specimen |
| JP2005292142A (en) * | 2004-04-05 | 2005-10-20 | Gerstel Systemtechnik Gmbh & Co Kg | Sample delivery method for sample analyzer and liner operating system |
| CN201078754Y (en) * | 2007-04-20 | 2008-06-25 | 中国科学院生态环境研究中心 | Full-automatic multi-flex case system |
| CN201262605Y (en) * | 2008-07-16 | 2009-06-24 | 索纪文 | Oxygen analysis system for cyclic hot-water rinshing coke-oven gas |
-
2010
- 2010-08-04 CN CN2010102450974A patent/CN102346196A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1342905A (en) * | 2001-10-30 | 2002-04-03 | 南化集团研究院 | Sampling system of in-line ultraviolet absorption photometric analyzer |
| JP2005292142A (en) * | 2004-04-05 | 2005-10-20 | Gerstel Systemtechnik Gmbh & Co Kg | Sample delivery method for sample analyzer and liner operating system |
| CN2711722Y (en) * | 2004-07-05 | 2005-07-20 | 鞍山盛科电子有限公司 | Analysis instrument for moisture content of oil specimen |
| CN201078754Y (en) * | 2007-04-20 | 2008-06-25 | 中国科学院生态环境研究中心 | Full-automatic multi-flex case system |
| CN201262605Y (en) * | 2008-07-16 | 2009-06-24 | 索纪文 | Oxygen analysis system for cyclic hot-water rinshing coke-oven gas |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120208 |