CN1865973A - Sulphur meter with air flow stabilizing device - Google Patents
Sulphur meter with air flow stabilizing device Download PDFInfo
- Publication number
- CN1865973A CN1865973A CN 200610031713 CN200610031713A CN1865973A CN 1865973 A CN1865973 A CN 1865973A CN 200610031713 CN200610031713 CN 200610031713 CN 200610031713 A CN200610031713 A CN 200610031713A CN 1865973 A CN1865973 A CN 1865973A
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- CN
- China
- Prior art keywords
- waste gas
- gas treatment
- electrolytic cell
- drying device
- treatment tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000005864 Sulphur Substances 0.000 title claims abstract description 7
- 230000000087 stabilizing effect Effects 0.000 title claims description 14
- 239000002912 waste gas Substances 0.000 claims abstract description 68
- 239000007789 gas Substances 0.000 claims abstract description 53
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 20
- 239000011593 sulfur Substances 0.000 claims description 20
- 229910052717 sulfur Inorganic materials 0.000 claims description 20
- 239000003792 electrolyte Substances 0.000 claims description 16
- 238000006386 neutralization reaction Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- 230000003019 stabilising effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 3
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 17
- 239000003245 coal Substances 0.000 description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 4
- 229910052794 bromium Inorganic materials 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000011630 iodine Substances 0.000 description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000003869 coulometry Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The disclosed sulphur analyzer with gas stabilizer comprises: a furnace with a sample feeding device on base, a control mechanism, an electrolytic cell connected to tail of a combustion tube, a drier, a flow sensor, and a cycle pump. Wherein, the gas stabilizer with a waste gas process cell is arranged between the electrolytic cell and drier. This invention can ensure the precise detection for sulphur content, and thereby improves detection precision and stability.
Description
Technical Field
The invention mainly relates to the field of measuring equipment for sulfur content in combustible substances, in particular to a sulfur determinator with an airflow stabilizing device.
Background
Sulfur is the most harmful component in coal samples, and sulfur compounds in the coal samples can generate SO after combustion2And the harmful gases and the fly ash generated by the harmful gases are discharged into the atmosphere along with the flue gas, so that the atmospheric pollution and the environmental dust pollution are caused,and therefore, the detection of the sulfur content in the coal sample is a very important work in the production, sale, use and environmental protection departments of the coal. In the prior art, in order to accurately and rapidly measure the sulfur content in combustible substances, a sulfur determinator is generally adopted as a measuring instrumentMeasurement devices are commonly used. In various measuring devices, such as a sulfur determinator and the like, a coulometry method is adopted. The coal sample generates sulfur dioxide and a small amount of sulfur trioxide gas after being combusted in the reaction furnace, the sulfur dioxide and the small amount of sulfur trioxide gas enter the electrolytic cell through a pipeline connected with the inner cavity of the reaction furnace for titration, and the content of sulfur in the sample is determined according to the electric quantity consumed by the electroproduction of iodine and bromine. During the test, the mode of burning and extracting gas is adopted, so that the gas flow requirement is stable. However, since the gas is continuously withdrawn during the measurement and the time distribution of the gas concentration is very uneven, the exhaust gas withdrawn from the electrolytic cell inevitably still contains small amounts of sulfur dioxide and sulfur trioxide, which causes the flow sensor to gradually decrease the flow indication over the measurement time. When the gas flow rate is changed, the sulfur content is difficult to accurately determine, thereby affecting the accuracy of the measurement.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the sulfur determinator with the airflow stabilizing device, which can keep the airflow in the determination process stable, can keep the airflow constant in the test process,and provides guarantee for accurately determining the sulfur content, thereby improving the test precision and stability of the apparatus.
In order to solve the technical problems, the solution proposed by the invention is as follows: the utility model provides a take air current stabilising arrangement's sulphur determination appearance, it is including being fixed in furnace body, the control mechanism on the bottom plate and through consecutive electrolytic bath, drying device, flow sensor and the circulating pump of pipeline, has installed the combustion tube in the furnace body, and the electrolytic bath passes through the pipeline and links to each other with the tail end of combustion tube, and the entry end of furnace body is equipped with and send a kind mouth, send a kind mouth and send a kind device to link to each other its characterized in that: and an airflow stabilizing device is arranged between the electrolytic cell and the drying device and comprises a waste gas treatment cell filled with waste gas treatment substances, and the waste gas treatment cell is respectively communicated with the electrolytic cell and the drying device through pipelines.
The waste gas treatment substance in the waste gas treatment tank is electrolyte, and an electrode plate connected with the control mechanism is arranged in the waste gas treatment tank.
And the waste gas treatment substance in the waste gas treatment tank is a neutralization medium.
The neutralizing medium is an alkaline substance.
The waste gas treatment tank is communicated with the electrolytic cell through a waste gas inlet pipe, one end of the waste gas inlet pipe is positioned above the liquid level of electrolyte in the electrolytic cell, and the other end of the waste gas inlet pipe is positioned below a waste gas treatment material interface in the waste gastreatment tank; the waste gas treatment pool is communicated with the drying device through a waste gas exhaust pipe, and one end of the waste gas exhaust pipe is positioned above a waste gas treatment material interface in the waste gas treatment pool.
Compared with the prior art, the invention has the advantages that: the sulfur determinator with the airflow stabilizing device is provided with the airflow stabilizing device between the electrolytic cell and the drying device and is communicated with the drying device through the pipeline, and the airflow stabilizing device can thoroughly remove a small amount of residual sulfur dioxide and sulfur trioxide in waste gas extracted from the electrolytic cell in an electrochemical mode or a pure chemical mode, so that the gas flowing through the drying device and the flow sensor does not contain sulfur, the airflow is stable in the testing process, the indication of the flow sensor is kept unchanged, and the accuracy of coal sample determination is improved.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic structural view of embodiment 1 of the air flow stabilizer of the present invention;
fig. 3 is a schematic structural view of embodiment 2 of the air flow stabilizing apparatus of the present invention.
Description of the figures
1. Bottom plate 2 and airflow stabilizing device
21. Exhaust gas treatment cell 22, electrolyte
23. Electrode sheet 24, neutralizing medium
25. Exhaust gas inlet pipe 26 and exhaust gas outlet pipe
3. Electrolytic cell
31. Electrolytic cell air inlet pipe 32 and electrolytic cell electrolyte
5. Furnace body 6, sample feeding mouth
7. Sample boat platform 8, sample boat
9. Sample feeder 10 and control mechanism
11. Circulating pump 12, flow sensor
13. Drying device 14, burner
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the sulfur determinator with air flow stabilizer of the invention, it includes the furnace body 5 fixed on bottom plate 1, the control mechanism 10 and electrolytic cell 3, drying device 13, flow sensor 12 and circulating pump 11 connected sequentially through the pipeline, the furnace body 5 is equipped with the combustion tube 14 inside, the electrolytic cell 3 is connected with end of the combustion tube 14 through the pipeline, the inlet end of the furnace body 5 has sample sending mouth 6, sample sending mouth 6 couples to sample sending apparatus 9, the sample sending apparatus 9 is used for holding the sample boat 8 of the coal sample to be measured and sending into the combustion tube 14 through sample sending mouth 6 to fully burn by the sample boat platform 7, the gas discharged after burning flows through the electrolytic cell 3, drying device 13, flow sensor 12 and circulating pump 11 sequentially, thus obtain a series of experimental data, finish the measurement work. The sample feeding device 9 can adopt a manual sample feeding mechanism or an automatic sample feeding mechanism. The control mechanism 10 is used for controlling the movement, positioning and data acquisition of the whole instrument; the electrolytic cell 3 is used for analyzing the sulfur content in the gas flow extracted from the furnace body 5; the drying device 13 is used for absorbing moisture in the exhaust air flow; the flow sensor 12 is used for measuring and controlling the size of the air flow; the circulation pump 11 is used to provide airflow power. In the sulfur determinator of the invention, an airflow stabilizing device 2 is arranged between an electrolytic cell 3 and a drying device 13, the airflow stabilizing device 2 comprises a waste gas treatment cell 21 containing waste gas treatment substances, and the waste gas treatment cell 21 is respectively communicated with the electrolytic cell 3 and the drying device 13 through pipelines. This air current stabilising arrangement 2 can thoroughly get rid of the little residual sulfur dioxide and sulfur trioxide that contain in the waste gas that takes out from electrolytic cell 3 through electrochemistry mode or pure chemical mode, makes its gas that flows through drying device 13, flow sensor 12 not contain the sulphur branch to make the air current stable, the instruction of flow sensor 12 keeps unchangeable, improves the accuracy of coal sample survey.
The air flow stabilizer 2 of the present invention can be implemented in various manners, and the air flow stabilizer 2 will be described in further detail with reference to specific embodiments, but the present invention is not limited to the manner of the following limited embodiments.
Example 1: as shown in fig. 2, in the present embodiment, the gas flow stabilizer 2 includes an exhaust gas treatment tank 21 containing an exhaust gas treatment substance, and the exhaust gas treatment tank 21 is respectively communicated with the electrolytic cell 3 and the drying device 13 through pipelines. The exhaust gas treatment substance in the exhaust gas treatment tank 21 is an electrolyte 22, and the electrolyte 22 may contain a solution of potassium iodide and potassium bromide, for example. An electrode plate 23 connected with the control mechanism 10 is arranged in the waste gas treatment tank 21, and the electrode plate 23 generates electrolytic current to generate the electrogenerated iodine and the electrogenerated bromine under the control of the control mechanism 10. The waste gas treatment tank 21 is communicated with the electrolytic cell 3 through a waste gas inlet pipe 25, one end of the waste gas inlet pipe 25 is positioned above the liquid level of electrolyte 32 in the electrolytic cell 3, and the other end is positioned below the liquid level of electrolyte 22 in the waste gas treatment tank 21; the exhaust gas treatment tank 21 is communicated with the drying device 13 through an exhaust gas exhaust pipe 26, and one end of the exhaust gas exhaust pipe 26 is positioned above the liquid level of the electrolyte 22 in the exhaust gas treatment tank 21.
The working principle is as follows: SO-containing gas generated after combustion of coal sample2And a small amount of SO3The gas enters the electrolytic cell electrolyte 32 from the electrolytic cell gas inlet pipe 31 of the electrolytic cell 3 through a pipeline, and the waste gas after electrolytic treatment is discharged from the waste gas inlet pipe 25 and enters the waste gas treatment cell 21. The waste gas treatment tank 21 is filled with an electrolyte 22 (containing a solution such as potassium iodide and potassium bromide) and a control mechanism 10And an associated electrode pad 23. The electrode sheet 23 generates electrolytic current to generate electrogenerated iodine and electrogenerated bromine under the control of the control mechanism 10. Because the waste gas discharged from the electrolytic cell 3 still contains a small amount of SO which is not completely electrolyzed2And SO3Gas, which is brought into the electrolyte 22 in the waste gas treatment tank 21 by the air flow, is hydrated togenerate sulfurous acid (H)2SO3) Immediately thereafter, it is oxidized by the electrogenerated iodine and bromine to a small amount of sulfuric acid (H)2SO4) Dissolving in water to remove residual SO in the exhaust gas2And SO3The gas is thoroughly cleaned, and the exhaust gas treated by the exhaust gas treatment tank 21 is extracted from the exhaust gas exhaust pipe 26 and sent to the drying device 13.
In the whole measurement process, the coal combustion reaction formula is as follows:
the electrolytic oxidation reaction formula is as follows:
example 2: as shown in fig. 3, in the present embodiment, the gas flow stabilizer 2 includes an exhaust gas treatment tank 21 containing an exhaust gas treatment substance, and the exhaust gas treatment tank 21 is respectively communicated with the electrolytic cell 3 and the drying device 13 through a pipeline. The waste gas treatment substance in the waste gas treatment tank 21 is a neutralization medium 24, and the neutralization medium 24 can be an alkaline substance, such as NaOH solution and the like. The waste gas treatment tank 21 is communicated with the electrolytic cell 3 through a waste gas inlet pipe 25, one end of the waste gas inlet pipe 25 is positioned above the liquid level of electrolyte 32 of the electrolytic cell in the electrolytic cell 3, and the other end is positioned below the interface of the neutralization medium 24 in the waste gas treatment tank 21; the waste gas treatment tank 21 is communicated with the drying device 13 through a waste gas exhaust pipe 26, and one end of the waste gas exhaust pipe 26 is positioned above the interface of the neutralization medium 24 in the waste gas treatment tank 21.
The working principle is as follows: SO-containing gas generated after combustion of coal sample2And a small amount of SO3The gas enters the electrolytic cell electrolyte 32 from the electrolytic cell gas inlet pipe 31 of the electrolytic cell 3 through a pipeline, and the waste gas after electrolytic treatment is discharged from the waste gas inlet pipe 25 and enters the waste gas treatment cell 21. The waste gas treatment tank 21 is filled with a neutralizing medium 24 (containing e.g. a NaOH solution). Because of the small amount of incompletely electrolyzed SO still contained in the exhaust gas discharged from the electrolytic cell 32And SO3The gas, which is entrained by the air flow into the neutralizing medium 24 and absorbed, thus entraining the residual SO in the exhaust gas2And SO3The gas is thoroughly treated. The exhaust gas treated in the exhaust gas treatment tank 21 is extracted from the exhaust gas exhaust pipe 26 and sent to the drying device 13.
In the whole measurement process, the coal combustion reaction formula is as follows:
the neutralization reaction formula is:
Claims (5)
1. the utility model provides a take air current stabilising arrangement's sulphur determination appearance, it is including being fixed in furnace body (5) on bottom plate (1), control mechanism (10) and electrolytic bath (3) that link to each other in proper order through the pipeline, drying device (13), flow inductor (12) and circulating pump (11), the built-in burner tube (14) that is equipped with in furnace body (5), electrolytic bath (3) link to each other through the tail end of pipeline with burner tube (14), the entry end of furnace body (5) is equipped with and send appearance mouth (6), send appearance mouth (6) and send appearance device (9) to link to each other, its characterized in that: an airflow stabilizing device (2) is arranged between the electrolytic cell (3) and the drying device (13), the airflow stabilizing device (2) comprises a waste gas treatment cell (21) filled with waste gas treatment substances, and the waste gas treatment cell (21) is respectively communicated with the electrolytic cell (3) and the drying device (13) through pipelines.
2. The sulfur determinator with air flow stabilizer according to claim 1, characterized in that: the waste gas treatment substance in the waste gas treatment tank (21) is electrolyte (22), and an electrode plate (23) connected with the control mechanism (10) is arranged in the waste gas treatment tank (21).
3. The sulfur determinator with air flow stabilizer according to claim 1, characterized in that: the waste gas treatment substance in the waste gas treatment pool (21) is a neutralization medium (24).
4. The sulfur determinator with air flow stabilizer according to claim 3,characterized in that: the neutralizing medium (24) is an alkaline substance.
5. The sulfur determinator with gas flow stabilization device of claim 1 or 2 or 3 or 4, wherein: the waste gas treatment tank (21) is communicated with the electrolytic cell (3) through a waste gas inlet pipe (25), one end of the waste gas inlet pipe (25) is positioned above the liquid level of electrolyte (32) of the electrolytic cell in the electrolytic cell (3), and the other end of the waste gas inlet pipe is positioned below the interface of waste gas treatment substances in the waste gas treatment tank (21); the waste gas treatment pool (21) is communicated with the drying device (13) through a waste gas exhaust pipe (26), and one end of the waste gas exhaust pipe (26) is positioned above the interface of waste gas treatment substances in the waste gas treatment pool (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610031713XA CN100419418C (en) | 2006-05-25 | 2006-05-25 | Sulphur meter with air flow stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610031713XA CN100419418C (en) | 2006-05-25 | 2006-05-25 | Sulphur meter with air flow stabilizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865973A true CN1865973A (en) | 2006-11-22 |
| CN100419418C CN100419418C (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610031713XA Active CN100419418C (en) | 2006-05-25 | 2006-05-25 | Sulphur meter with air flow stabilizing device |
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| Country | Link |
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| CN (1) | CN100419418C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510425A (en) * | 2016-01-29 | 2016-04-20 | 湖南省计量检测研究院 | Coulomb sulfur tester |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3853474A (en) * | 1972-10-10 | 1974-12-10 | Itt | Method of burning combustible fluids for further analysis |
| US4026665A (en) * | 1976-06-11 | 1977-05-31 | Fisher Scientific Company | Method and apparatus for sulfur analysis |
| JPS61191956A (en) * | 1985-02-20 | 1986-08-26 | Mitsubishi Chem Ind Ltd | Method and apparatus for measuring sulfur portion in material containing nitrogen and sulfur |
| JPH10153577A (en) * | 1996-11-26 | 1998-06-09 | Mitsubishi Chem Corp | Sulfur content analysis method |
| CN2417472Y (en) * | 2000-03-28 | 2001-01-31 | 长沙三德实业有限公司 | Automatic industrial analysis instrument |
| CN2520510Y (en) * | 2002-01-31 | 2002-11-13 | 国电环境保护研究所 | Instrument for quick analysis of total sulfur of coal |
| 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 |
| CN2898823Y (en) * | 2006-05-26 | 2007-05-09 | 朱先德 | Sulfur measuring equipment with flow stabilizer |
-
2006
- 2006-05-25 CN CNB200610031713XA patent/CN100419418C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100419418C (en) | 2008-09-17 |
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Address after: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Patentee after: Hunan Sundy Science and Technology Development Co., Ltd. Address before: 410205 Changsha high tech Zone, Tongzi, west slope road, No. 558, No. Patentee before: Sande Science and Technology Development Co., Ltd., Hunan |