CN102914537A - Method for determining chlorine ion content in coal gas - Google Patents
Method for determining chlorine ion content in coal gas Download PDFInfo
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- CN102914537A CN102914537A CN2012104030596A CN201210403059A CN102914537A CN 102914537 A CN102914537 A CN 102914537A CN 2012104030596 A CN2012104030596 A CN 2012104030596A CN 201210403059 A CN201210403059 A CN 201210403059A CN 102914537 A CN102914537 A CN 102914537A
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- coal gas
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- chloride ion
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Abstract
The invention provides a method for determining chlorine ion content in coal gas, which comprises the following steps: causing the coal gas to pass by absorption liquid in an absorption bottle and causing the absorption liquid to absorb the chlorine ions in the coal gas; operating a titration test for analyzing; and calculating and determining the chlorine ion content in the coal gas. According to the method for determining the chlorine ion content in the coal gas provided by the invention, the safe sampling problem of metallurgy coal gas is solved, the chlorine ion content in the coal gas is accurately determined, and the problem of the inexistence of the detecting method for the chlorine ion content in the coal gas is solved.
Description
Technical field
The present invention relates to the gas analysis field, particularly the assay method of chloride ion content in a kind of coal gas.
Background technology
At present, after ironmaking, steelmaking coal gas adopted dry method dust, chloride ion content raise in the coal gas, the problem that the blade salt crust vibrations when causing etching problem and coal gas to utilize and generating efficiency reduce.And chloride ion content does not have detection means at present in the coal gas.
Summary of the invention
Technical matters to be solved by this invention provides a kind of safe, assay method of chloride ion content in the coal gas accurately.
For solving the problems of the technologies described above, the invention provides the assay method of chloride ion content in a kind of coal gas, comprising:
Step a sampling is from two absorption bottles that fill absorption liquid of gas sampling mouth cascade arrangement, and absorption bottle connects the high-order exhaust stack of coal gas by the wet type gas flow meter, then passes into coal gas;
Step b analyzes and may further comprise the steps:
Pour in the beaker two bottles of absorption liquids into heating and boil, then be cooled to normal temperature to be measured;
Get absorption liquid to be measured in conical flask, splash into the phenolphthalein test solution, with sodium hydroxide solution and salpeter solution regulator solution pH value, just become colorless to redness;
Add potassium chromate solution, use the liquor argenti nitratis ophthalmicus titration, till extremely just appearance is brick-red; Do simultaneously blank test;
Step c calculates and calculates first chloride ion content X in the absorption liquid
1:
X
1=(V
1-V0)×C×0.03545/V×106×35.5
Wherein, X
1Chloride ion content in the-expression absorption liquid, mg/L;
V
1The volume of the liquor argenti nitratis ophthalmicus that the test of-titration absorption liquid consumes, mL;
V
0The volume of the liquor argenti nitratis ophthalmicus that-blank test consumes, mL;
The volume of the V-absorption liquid of getting, mL;
The concentration of C-liquor argenti nitratis ophthalmicus, mol/L;
Calculate again under the mark condition chloride ion content in every cubic metre of coal gas:
Wherein, V
Gas-coal gas the volume that passes through, L;
T-gas temperature, ℃;
P-coal gas air pressure and atmospheric poor, kPa;
Saturated vapor pressure in the time of W-t ℃, kPa.
Further, the absorption liquid in the described absorption bottle of step a is ultrapure water.
Further, the speed that passes into coal gas among the step a is 0.5L/miu.
Further, the time that the absorption liquid in the beaker boils described in the step b is 30 seconds.
Further, the concentration of liquor argenti nitratis ophthalmicus described in the step b is 0.002938mol/L.
The assay method of chloride ion content in a kind of coal gas provided by the invention has at first solved the safe problem of sampling of metallurgical gases, secondly can accurately measure the content of chlorion in the coal gas, has solved the problem that chloride ion content in the coal gas does not have detection means.
Embodiment
The assay method of chloride ion content comprises the steps: in a kind of coal gas that the embodiment of the invention provides
Step a sampling is from two absorption bottles that fill absorption liquid of gas sampling mouth cascade arrangement, and absorption bottle connects the high-order exhaust stack of coal gas by the wet type gas flow meter, then passes into coal gas;
Step b analyzes and may further comprise the steps:
Pour in the beaker two bottles of absorption liquids into heating and boil, then be cooled to normal temperature to be measured;
Get absorption liquid to be measured in conical flask, splash into the phenolphthalein test solution, with sodium hydroxide solution and salpeter solution regulator solution pH value, just become colorless to redness;
Add potassium chromate solution, use the liquor argenti nitratis ophthalmicus titration, till extremely just appearance is brick-red; Do simultaneously blank test;
Step c calculates and calculates first chloride ion content X in the absorption liquid
1:
X
1=(V
1-V0)×C×0.03545/V×106×35.5
Wherein, X
1Chloride ion content in the-expression absorption liquid, mg/L;
V
1The volume of the liquor argenti nitratis ophthalmicus that the test of-titration absorption liquid consumes, mL;
V
0The volume of the liquor argenti nitratis ophthalmicus that-blank test consumes, mL;
The volume of the V-absorption liquid of getting, mL;
The concentration of C-liquor argenti nitratis ophthalmicus, mol/L;
Calculate again under the mark condition chloride ion content in every cubic metre of coal gas:
Wherein, V
Gas-coal gas the volume that passes through, L;
T-gas temperature, ℃;
P-coal gas air pressure and atmospheric poor, kPa;
Saturated vapor pressure in the time of W-t ℃, kPa.
The assay method of chloride ion content in a kind of coal gas that the embodiment of the invention provides, detailed process is as follows:
Behind the valve of the sample tap of gas pipeline with the chlorion absorption bottle (I) of emulsion tube cascade arrangement 250ml and the chlorion absorption bottle (II) of 250ml, each 200ml of ultrapure water absorption liquid is arranged in the absorption bottle, then connect the wet type gas flow meter, connect the high-order exhaust stack of coal gas with emulsion tube behind the wet type gas flow meter, after above instrument connects, whether inspection apparatus is tight, then passes into coal gas, passes into 10 liters of coal gas with the speed of 0.5L/min and gets final product.
Absorption liquid in two absorption bottles is poured in the beaker of 1000mL together, beaker is placed boil 30 seconds on the electric furnace, the CO in the venting absorption liquid
2After, be cooled to behind the normal temperature to be measured.
Pipetting 100mL absorption liquid to be measured in the 250mL conical flask with transfer pipet, add 2 phenolphthalein indicator solution, is the sodium hydroxide solution of 2g/L and the pH value that salpeter solution is regulated water sample with concentration, and redness is become colorless just.
Add 15 potassium chromate indicator solutions that concentration is 50g/L, constantly shaking in the situation, adopting volumetric molar concentration with the 10ml buret is the silver nitrate standard titration solution titration of 0.002938mol/L, until just occurred brick-red, the volume V1 that writes down the silver nitrate standard titration solution of consumption is 12mL, do simultaneously blank test, write down the volume V of the silver nitrate standard titration solution of consumption
0Be 2mL.Gas pressure P is 25kPa during sampling, and gas temperature t is 40 ℃, and through looking into temperature-saturation vapor pressure table, the water saturation steam pressure W during 40 ℃ of gas temperatures is 7.3814kPa.
First by calculating formula:
X1=(V1-V0)×C×0.03545/V×106×35.5
Calculate chloride ion content X1 in the absorption liquid:
X1=(V1-V0)×C×0.03545/V×106×35.5
=(12-2)×0.002938×0.03545÷100×106×35.5
=0.03919(mg/L)
Again by calculating formula:
Calculate standard state (0 ℃, 101kPa) under, chloride ion content in every cubic metre of coal gas:
The assay method of chloride ion content in a kind of coal gas provided by the invention has not only solved the safe problem of sampling of metallurgical gases, and can accurately measure the content of chlorion in the coal gas, has solved the problem that chloride ion content in the coal gas does not have detection means.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. the assay method of chloride ion content in the coal gas is characterized in that, comprising:
Step a, sampling: from two absorption bottles that fill absorption liquid of gas sampling mouth cascade arrangement, absorption bottle connects the high-order exhaust stack of coal gas by the wet type gas flow meter, then passes into coal gas;
Step b, analysis:
Pour in the beaker two bottles of absorption liquids into heating and boil, then be cooled to normal temperature to be measured;
Get absorption liquid to be measured in conical flask, splash into the phenolphthalein test solution, with sodium hydroxide solution and salpeter solution regulator solution pH value, just become colorless to redness;
Add potassium chromate solution, use the liquor argenti nitratis ophthalmicus titration, till extremely just appearance is brick-red; Do simultaneously blank test;
Step c, calculating:
Calculate first chloride ion content X in the absorption liquid
1: X
1=(V
1-V0) * C * 0.03545/V * 106 * 35.5, wherein, X
1Chloride ion content in the-expression absorption liquid, mg/L; V
1The volume of the liquor argenti nitratis ophthalmicus that the test of-titration absorption liquid consumes, mL; V
0The volume of the liquor argenti nitratis ophthalmicus that-blank test consumes, mL; The volume of the V-absorption liquid of getting, mL; The concentration of C-liquor argenti nitratis ophthalmicus, mol/L;
Calculate again under the mark condition chloride ion content in every cubic metre of coal gas:
Wherein, V
Gas-coal gas the volume that passes through, L; T-gas temperature, ℃; P-coal gas air pressure and atmospheric poor, kPa; Saturated vapor pressure in the time of W-t ℃, kPa.
2. the assay method of chloride ion content in the coal gas according to claim 1 is characterized in that; Absorption liquid in the described absorption bottle of step a is ultrapure water.
3. the assay method of chloride ion content in the coal gas according to claim 1 is characterized in that; The speed that passes into coal gas among the step a is 0.5L/min.
4. the assay method of chloride ion content in the coal gas according to claim 1 is characterized in that; The time that absorption liquid described in the step b in the beaker boils is 30 seconds.
5. the assay method of chloride ion content in the coal gas according to claim 1 is characterized in that; The concentration of liquor argenti nitratis ophthalmicus described in the step b is 0.002938mol/L.
Priority Applications (1)
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| CN2012104030596A CN102914537A (en) | 2012-10-19 | 2012-10-19 | Method for determining chlorine ion content in coal gas |
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| CN2012104030596A CN102914537A (en) | 2012-10-19 | 2012-10-19 | Method for determining chlorine ion content in coal gas |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569092A (en) * | 2015-01-22 | 2015-04-29 | 首钢总公司 | Method and device used for detecting chlorine content of blast-furnace gas |
| CN105806993A (en) * | 2016-04-08 | 2016-07-27 | 天津中水有限公司 | Method for detecting chloride in reclaimed water and titration apparatus |
| CN106018672A (en) * | 2016-07-20 | 2016-10-12 | 山西焦化股份有限公司 | Method for determining chlorine ion content in coke |
| CN106191357A (en) * | 2016-07-07 | 2016-12-07 | 首钢总公司 | A kind of system for detecting chlorinity in coal gas and using method thereof |
| CN107907626A (en) * | 2017-11-13 | 2018-04-13 | 公安部天津消防研究所 | A kind of method for measuring cable fire release total amount of halogen acid gas |
| CN108717059A (en) * | 2018-05-29 | 2018-10-30 | 上海福乐医药科技有限公司 | A kind of method of titration measuring diisopinocampheylchloroborane base chloroborane content |
| CN111089938A (en) * | 2019-12-23 | 2020-05-01 | 湖南华菱涟源钢铁有限公司 | Method and device for detecting content of chlorine in blast furnace gas |
| CN113702616A (en) * | 2021-08-27 | 2021-11-26 | 中冶赛迪工程技术股份有限公司 | Method and device for detecting chlorine content in blast furnace gas |
| CN113959966A (en) * | 2021-10-20 | 2022-01-21 | 山东恒邦冶炼股份有限公司 | Method for measuring chlorine content in antimony-containing arsenic trioxide |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569092A (en) * | 2015-01-22 | 2015-04-29 | 首钢总公司 | Method and device used for detecting chlorine content of blast-furnace gas |
| CN105806993A (en) * | 2016-04-08 | 2016-07-27 | 天津中水有限公司 | Method for detecting chloride in reclaimed water and titration apparatus |
| CN105806993B (en) * | 2016-04-08 | 2018-08-21 | 天津中水有限公司 | Detect the detection method and titration outfit of chloride in recycled water water |
| CN106191357A (en) * | 2016-07-07 | 2016-12-07 | 首钢总公司 | A kind of system for detecting chlorinity in coal gas and using method thereof |
| CN106191357B (en) * | 2016-07-07 | 2018-08-21 | 首钢集团有限公司 | A kind of system and its application method for detecting chlorinity in coal gas |
| CN106018672A (en) * | 2016-07-20 | 2016-10-12 | 山西焦化股份有限公司 | Method for determining chlorine ion content in coke |
| CN107907626A (en) * | 2017-11-13 | 2018-04-13 | 公安部天津消防研究所 | A kind of method for measuring cable fire release total amount of halogen acid gas |
| CN108717059A (en) * | 2018-05-29 | 2018-10-30 | 上海福乐医药科技有限公司 | A kind of method of titration measuring diisopinocampheylchloroborane base chloroborane content |
| CN108717059B (en) * | 2018-05-29 | 2020-08-07 | 上海福乐医药科技有限公司 | Method for measuring content of diisopinocampheylchloroborane by titration method |
| CN111089938A (en) * | 2019-12-23 | 2020-05-01 | 湖南华菱涟源钢铁有限公司 | Method and device for detecting content of chlorine in blast furnace gas |
| CN113702616A (en) * | 2021-08-27 | 2021-11-26 | 中冶赛迪工程技术股份有限公司 | Method and device for detecting chlorine content in blast furnace gas |
| CN113959966A (en) * | 2021-10-20 | 2022-01-21 | 山东恒邦冶炼股份有限公司 | Method for measuring chlorine content in antimony-containing arsenic trioxide |
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