CN102589939A - Sulfur dioxide measurement sampling method for sulfur producing acid converter - Google Patents
Sulfur dioxide measurement sampling method for sulfur producing acid converter Download PDFInfo
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- CN102589939A CN102589939A CN2012100702310A CN201210070231A CN102589939A CN 102589939 A CN102589939 A CN 102589939A CN 2012100702310 A CN2012100702310 A CN 2012100702310A CN 201210070231 A CN201210070231 A CN 201210070231A CN 102589939 A CN102589939 A CN 102589939A
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Abstract
The invention belongs to the technical field of chemical analysis equipment, and relates to a sulfur dioxide measurement sampling method for a sulfur producing acid converter. The method mainly includes an air injection sucking pump connected with an analyzer, and two capillary throttling holes; the air injection sucking pump produces relatively stable negative pressure at a negative pressure inlet of the air injection sucking pump under the action of compressed air, so that process gas sample and dilution air that pass through the two capillary throttling holes can be mixed at a ratio and enter the analyzer; and the gas sample coming out of the analyzer is exhausted together with the power compressed air of the air injection sucking pump. The method disclosed by the utility model can solve the purification problem of sampled gas of sulfur producing acid converter or other analysis instruments, and ensures the normal work of the electrochemical analysis instrument or other analysis instruments under severe process conditions.
Description
Technical field
The invention belongs to the chemical analysis equipment technical field, be specifically related to a kind of acid production with sulphur converter sulphuric dioxide that is applied to and measure sampling method.
Background technology
TC type flue gas analyser based on thermal conduction principle; In troilite and metallurgical off-gas acid-making system; Detect the converter sulfur dioxide concentration; Its effect and serviceable life are all comparatively desirable, and price is cheaply a lot of based on the instrument of optical principle, and domestic majority sulfuric acid enterprise all adopted this type of instrument in the past.Yet this instrument but seldom can steady in a long-term be moved in sulphur-burning sulphuric acid system, and mostly the fault that is shown is: gas sampling pipeline burn into stops up, and the instrument detection part damages.This mainly is a sulfuric anhydride and acid mist content is higher causes in the acid production with sulphur process gas.Because in the troilite and metallurgical off-gas acid-making system of being furnished with purification and drying equipment, advance the gas of converter, under the situation that the one-level electrostatic precipitator is only arranged, acid mist content usually all can be less than 0.03 g/m.And in sulphur-burning sulphuric acid system, then often greater than 3 g/m, the producer that has even higher; Moreover TC type flue gas analyser requires into that the temperature of table appearance gas is not higher than 60 ℃, thus after the air cooling but of technology appearance, can form the acid mist and the deposition of high concentration, and then corrosion instrument supply gas sampler body pipeline and detection part.
Summary of the invention
The object of the invention is exactly to propose a kind of sampling method that acid production with sulphur converter sulphuric dioxide is measured that is used for.
Numerous and confused through sampling of the present invention, can make kind gas can reach the technical requirement of electrochemical analyser or other analyser: 1, water cut is less than dew point; 2, dustiness is less than 10mg/m
3; 3, SO
2Content is less than 0.2%.
Method of the present invention is to introduce diluting and sampling system the acid production with sulphur process gas is carried out dilution proportion, so that the dilution of high concentration process gas is low concentration appearance gas, uses the lower range analytical instrument to carry out on-line measurement.Simultaneously sulfuric anhydride and the acid mist in the equal proportion dilution technique gas effectively move existing problem thereby solved flue gas analyser under the acid production with sulphur process conditions, guaranteed that flue gas analyser is steady in a long-term to move.
Main technical schemes of the present invention: acid production with sulphur converter sulphuric dioxide is measured sampling method, it is characterized in that comprising the air ejector air pump that is connected with analyser and two capillarys aperture that dams; The air ejector air pump is under the pressurized air effect; Negative pressure inlet at air ejector produces a metastable negative pressure; Technology appearance gas and the diluent air of holding back aperture through two capillarys are mixed in proportion; Get into analyser, go out the appearance gas of analyser and the powered compressor air of air ejector air pump and discharge together.
Usually; The inventive method is in the pipeline of technology appearance gas and diluent air, respectively to establish the capillary aperture that dams; To regulate the different flow of cutting process appearance gas and diluent air, make the ratio of technology appearance gas and diluent air flow reach a stationary value, to realize the dilution ratio of designing requirement.
In order to realize the stable of technology appearance gas and diluent air flow, the negative pressure that requires the air ejector air pump to produce here reaches-0.65kg/cm
2Below, reach certain value with the pressure reduction on aperture two limits that guarantee to dam, make and flow through the influence that the aperture flow that dams does not receive process atmospheric pressures and other factors.Because when the differential pressure on aperture two limits of damming reaches certain value when above, the flow velocity that flows through the aperture that dams will reach a higher limit, and the variation of the differential pressure on aperture two limits of damming will be very little to the influence of flow velocity.
Technology appearance gas and diluent air mix the back in proportion and reduce appearance gas concentration, reduce SO in the appearance gas simultaneously
3Concentration it is reached below the dew point, prevent that it from producing corrosion to instrument and pipeline.
The dilution ratio of technology appearance gas determines two factors.
One, tested gas concentration will be diluted in the measurement range of analyser.General technology measured point SO
2The concentration maximal value is about 15%, and the measurement range of analyser is 0-2000ppm.So its dilution ratio should be about 15%/2000ppm=75 times.
Two, to guarantee to dilute SO in the appearance gas of laggard analyser
3Dewfall does not take place in conveying and the measuring process of concentration from the sampled point to the analyser.Must guarantee dilution back SO
3Concentration is lower than 0.03 g/m.If SO in technology appearance gas
3Content is TS, and in order to guarantee not take place dewfall, the dilution ratio that must guarantee is greater than TS/0.03.SO in the technology appearance gas for example
3Content is 3 g/m, and then dilution ratio needs greater than 100.
Get then above in the two the greater as the desired dilution ratio of instrument.Dilute the dam diameter of aperture of capillary in the pipeline of recently adjusting process appearance gas and diluent air with this, make the two gas flow ratio satisfy the requirement of dilution ratio.Usually the dam capillary of aperture and technology appearance gas of the capillary of diluent air is dammed between the diameter ratio of aperture is 6.7-10 times.
The instrument wind that the powered compressor air that the air ejector air pump is used adopts drying, do not have oil, cleans.Technology to no instrument wind is on-the-spot, can be equipped with portable skid pressurized air origin system, is made up of portable air compressor, adsorption air exsiccator, front and rear filtrator etc., and the compressed air gas source of purification is provided for dilution system.
Description of drawings
Accompanying drawing is an embodiment of the invention sampling method schematic flow sheet.
Among the figure, among the figure, 1-air ejector air pump; 2-analyser; 3,4-capillary is held back aperture; 5-air pump or pressurized air; 6,9-air; 7-negative pressure inlet; 8-technology appearance gas.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in detail.
Embodiment one: present embodiment acid production with sulphur converter sulphuric dioxide is measured sampling method; Shown in accompanying drawing 1; Mainly comprise air ejector air pump that stainless steel makes 1, two capillarys that glass is made 3,4, electrochemical analysers 2 of aperture that dam, and one is used to assemble the casing with the plastic-blasting steel of upper-part.
The power air of air ejector air pump 1 is the instrument wind of factory, guides on the air ejector air pump through outspoken the connecing that connect on the casing of plastic-blasting steel, and the outlet of air ejector air pump is directly arranged to atmosphere.
The technology appearance gas of being analyzed 8 is for getting into the sulfur dioxide gas of converter trioxygen-containing sulphur, and its sulfur dioxide concentration is at 7-15%, and sulfuric anhydride is between 0.1-1%.The gas of being analyzed is barotropic gas, and pressure is about 30Kpa.
Diluent air is an atmosphere, normal pressure.
Analyser adopts electrochemical analyser, and it measures range is 0-2000ppm.
The capillary aperture that dams is that glass is made, its aperture be controlled at its dilution ratio should be 15%/2000ppm=75 doubly about.Guarantee to dilute SO in the appearance gas of laggard analyser
3Dewfall does not take place in conveying and the measuring process of concentration from the sampled point to the analyser.Must guarantee dilution back SO
3Concentration is lower than 0.03 g/m.If SO in technology appearance gas
3Content is TS, and in order to guarantee not take place dewfall, the dilution ratio that must guarantee is greater than TS/0.03.SO in the technology appearance gas for example
3Content is 3 g/m, and then dilution ratio needs greater than 100.Finally getting dilution ratio is 100.Select diluent air capillary the dam diameter ratio of aperture of aperture and appearance gas capillary that dams is 100 for this reason
1/2=10 times relation.
Embodiment two: present embodiment is mainly in high arsenic two-stage calcination device; The gas-sample analysis of calciner outlet; Mainly comprise capillary that air ejector air pump that stainless steel makes, two glass are made dam aperture, an electrochemical analyser, and one is used to assemble the casing with the plastic-blasting steel of upper-part.
The gas of being analyzed is the gas of calciner outlet, and its sulfur dioxide concentration is at 7-9%, and sulfuric anhydride is between 0.1-0.3%.By the gaseous tension analyzed about-1Kpa.Gas also contains saturated steam and a spot of dirt.
Analyser adopts electrochemical analyser, and it measures range is 0-2000ppm.
The capillary aperture that dams is that glass is made, its aperture be controlled at thus its dilution ratio should be 9%/2000ppm=45 doubly about.To guarantee to dilute SO in the appearance gas of laggard analyser equally
3Dewfall does not take place in conveying and the measuring process of concentration from the sampled point to the analyser.Must guarantee dilution back SO
3Concentration is lower than 0.03 g/m.With SO3 content in the technology appearance gas is 0.3% calculating, and then dilution ratio needs greater than 10.Other water vapor and dirt can have not a particular requirement.Finally getting dilution ratio is 45.Need select diluent air capillary the dam diameter ratio of aperture of aperture and appearance gas capillary that dams is 45 for this reason
1/2=6.7 times.
Claims (3)
1. acid production with sulphur converter sulphuric dioxide is measured sampling method, it is characterized in that comprising the air ejector air pump that is connected with analyser and two capillarys aperture that dams; The air ejector air pump is under the pressurized air effect; Negative pressure inlet at air ejector produces a metastable negative pressure; Technology appearance gas and the diluent air of holding back aperture through two capillarys are mixed in proportion; Get into analyser, go out the appearance gas of analyser and the powered compressor air of air ejector air pump and discharge together.
2. sampling method as claimed in claim 1 is characterized in that the negative pressure that the air ejector air pump produces is-0.65kg/cm
2Below.
3. the dam capillary of aperture and technology appearance gas of sampling method as claimed in claim 1, the capillary that it is characterized in that diluent air is dammed between the diameter ratio of aperture is 6.7-10 times.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100702310A CN102589939A (en) | 2012-03-16 | 2012-03-16 | Sulfur dioxide measurement sampling method for sulfur producing acid converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100702310A CN102589939A (en) | 2012-03-16 | 2012-03-16 | Sulfur dioxide measurement sampling method for sulfur producing acid converter |
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| CN102589939A true CN102589939A (en) | 2012-07-18 |
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| CN2012100702310A Pending CN102589939A (en) | 2012-03-16 | 2012-03-16 | Sulfur dioxide measurement sampling method for sulfur producing acid converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109996A (en) * | 2023-10-25 | 2023-11-24 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315655A (en) * | 2000-03-31 | 2001-10-03 | 深圳市中兴新通讯设备有限公司 | Sampler for fume dilution |
| CN2496010Y (en) * | 2001-09-19 | 2002-06-19 | 林培陆 | General-purpose diliution sampling probe for continuous monitoring gaseous pollutant |
| CN101194156A (en) * | 2005-06-09 | 2008-06-04 | 株式会社堀场制作所 | Exhaust gas dilution device |
| CN201548535U (en) * | 2009-11-10 | 2010-08-11 | 武汉钢铁(集团)公司 | Smoke analyzing system applying built-out dilution extracting method |
-
2012
- 2012-03-16 CN CN2012100702310A patent/CN102589939A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315655A (en) * | 2000-03-31 | 2001-10-03 | 深圳市中兴新通讯设备有限公司 | Sampler for fume dilution |
| CN2496010Y (en) * | 2001-09-19 | 2002-06-19 | 林培陆 | General-purpose diliution sampling probe for continuous monitoring gaseous pollutant |
| CN101194156A (en) * | 2005-06-09 | 2008-06-04 | 株式会社堀场制作所 | Exhaust gas dilution device |
| CN201548535U (en) * | 2009-11-10 | 2010-08-11 | 武汉钢铁(集团)公司 | Smoke analyzing system applying built-out dilution extracting method |
Non-Patent Citations (3)
| Title |
|---|
| 刘海波: "脱硫高湿烟气中SO2测试采样装置的研究及应用", 《湖南电力》 * |
| 王胜等: "稀释法CEMS在王滩电厂中的应用", 《化学工程与装备》 * |
| 陈凯等: "气体分析仪比例稀释系统设计", 《华南师范大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109996A (en) * | 2023-10-25 | 2023-11-24 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
| CN117109996B (en) * | 2023-10-25 | 2024-01-02 | 成都蓝湖科技有限公司 | Analysis sampling system of sulfur analysis ratio instrument |
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Application publication date: 20120718 |