CN106198431A - A kind of method of former sulfur content of coal detection - Google Patents
A kind of method of former sulfur content of coal detection Download PDFInfo
- Publication number
- CN106198431A CN106198431A CN201610776838.9A CN201610776838A CN106198431A CN 106198431 A CN106198431 A CN 106198431A CN 201610776838 A CN201610776838 A CN 201610776838A CN 106198431 A CN106198431 A CN 106198431A
- Authority
- CN
- China
- Prior art keywords
- solution
- formalin
- sulfur content
- coal
- pra
- 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.)
- Pending
Links
Abstract
The invention belongs to technical field of coal chemical industry, the method being specifically related to the detection of a kind of former sulfur content of coal.Said method comprising the steps of: (1) configuration Pararosaniline PRA solution, formaldehyde absorbent, sulfur dioxide titer；(2) make sulphur dioxide enrichment in formalin by the formaldehyde absorbent absorption of pipeline excess in raw coal combustion tail gas；(3) pipette the formalin of enrichment and add PRA solution, being added dropwise over sodium hydroxide solution until aubergine compound is not further added by；(4) by the solution UV spectrophotometer measuring of displaing amaranth, contrast standard curve obtains the content of sulfur；(5) according to formalin cumulative volume and the absorption formalin volume ratio final sulfur content of conversion.The inventive method is the most easily operated, improves accuracy and the sensitivity of testing result.
Description
Technical field
The invention belongs to technical field of coal chemical industry, the method being specifically related to the detection of a kind of former sulfur content of coal.
Background technology
Raw coal is a kind of important Fossil fuel, and the aspect such as high-quality coal electric power in daily life, heat supply is all
There is extremely important effect.In coal, the content of sulfur is the important criteria evaluating Coal Quality, and conventional machines detection
Sulfur content method needs sample many, and testing cost is high, and detection limit for height, and detection sensitivity is not enough.
Summary of the invention
For solving the above-mentioned problems in the prior art, the present invention provides a kind of method that former sulfur content of coal detects.
The technical solution used in the present invention is as follows:
The method of a kind of former sulfur content of coal detection, comprises the following steps:
(1) configuration Pararosaniline PRA solution, formaldehyde absorbent, sulfur dioxide titer；
(2) make sulphur dioxide enrichment molten at formaldehyde by the formaldehyde absorbent absorption of pipeline excess in raw coal combustion tail gas
In liquid；
(3) pipette the formalin of enrichment and add PRA solution, being added dropwise over sodium hydroxide solution until aubergine chemical combination
Thing is not further added by；
(4) by the solution UV spectrophotometer measuring of displaing amaranth, contrast standard curve obtains the content of sulfur；
(5) according to formalin cumulative volume and the absorption formalin volume ratio final sulfur content of conversion.
Described step (1) adds phosphoric acid and concentrated hydrochloric acid configuration Pararosaniline PRA solution in PRA storing solution.
By formalin, CDTA-2Na solution and Potassium Hydrogen Phthalate solution mixed configuration formaldehyde in described step (1)
Absorbing liquid.
Described step (1) first by soluble in water for sodium sulfite and be diluted to variable concentrations configuration sulfur dioxide titer, so
The each solution of rear demarcation also obtains the standard curve that content of sulfur dioxide is strong and weak with spectrophotometer absorption.
The present invention first by the gas after raw coal combustion (containing SO2) use formaldehyde absorbent to absorb, generate stable hydroxyl first
Base sulfonic acid additive compound.Then adding sodium hydroxide in sample solution makes additive compound decompose, and discharges sulfur dioxide
With Pararosaniline, formaldehyde effect, generate aubergine compound, be measured with spectrophotometer, can be enriched with accurately, survey
Sulfur content in amount raw coal.
Compared with prior art, the present invention has a following excellent technique effect:
1. the enrichment of pair elementary sulfur to be checked is obvious, and in solution to be checked, the most selective existence detecting sulfur, cuts significantly
The spectral interference that other elements weak cause, improves the accuracy of result.
2. using sample few, detection means is simple.
3. method is the most easily operated, improves the sensitivity of testing result.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further explained:
Embodiment 1
(1) configuration Pararosaniline (PRA) solution: draw 25mL PRA storing solution (0.20g/100mL) in 100mL capacity
In Ping, add 30mL85% phosphoric acid, 12mL concentrated hydrochloric acid, be diluted with water to graduation mark, shake up.
(2) configuration formaldehyde absorbent: formalin 5.5mL of absorption 36%～38%, CDTA-2Na solution 20.00mL,
Weigh 2.04mg Potassium Hydrogen Phthalate, be dissolved in a small amount of water, three kinds of solution are merged, then is diluted with water to 100mL.
(3) configuration sulfur dioxide titer: take 0.2g sodium sulfite and be dissolved in 200mL water, takes the above-mentioned solution of 20mL respectively
It is diluted to 100/250/500/1000mL etc.；Demarcate each solution and obtain content of sulfur dioxide and spectrophotometer absorption power
Standard curve.
(4) being burnt in miniature boiler by 100mg raw coal, combustion tail gas is absorbed by the formaldehyde absorbent of pipeline excess
Make in sulphur dioxide enrichment formalin.
(5) pipetting formalin 50mL of enrichment and add 50mL PRA solution, the sodium hydroxide being added dropwise over 0.1M is molten
Liquid, until aubergine compound is not further added by.
(6) displaing amaranth obtaining solution ultraviolet spectrophotometer to detect at 577nm, contrast standard curve obtains sulfur
Content.
(7) according to formalin cumulative volume and the absorption formalin volume ratio final sulfur content of conversion, knot is analyzed in detection
Fruit see table 1.
Table 1 former sulfur content of coal detection analysis result
Claims (4)
1. the method for a former sulfur content of coal detection, it is characterised in that comprise the following steps:
(1) configuration Pararosaniline PRA solution, formaldehyde absorbent, sulfur dioxide titer；
(2) make sulphur dioxide enrichment in formalin by the formaldehyde absorbent absorption of pipeline excess in raw coal combustion tail gas
In；
(3) pipette the formalin of enrichment and add PRA solution, be added dropwise over sodium hydroxide solution until aubergine compound not
It is further added by；
(4) by the solution UV spectrophotometer measuring of displaing amaranth, contrast standard curve obtains the content of sulfur；
(5) according to formalin cumulative volume and the absorption formalin volume ratio final sulfur content of conversion.
The method of a kind of former sulfur content of coal the most according to claim 1 detection, it is characterised in that described step (1) exists
PRA storing solution adds phosphoric acid and concentrated hydrochloric acid configuration Pararosaniline PRA solution.
The method of a kind of former sulfur content of coal the most according to claim 1 detection, it is characterised in that in described step (1)
By formalin, CDTA-2Na solution and Potassium Hydrogen Phthalate solution mixed configuration formaldehyde absorbent.
The method of a kind of former sulfur content of coal the most according to claim 1 detection, it is characterised in that described step (1) is first
By soluble in water for sodium sulfite and be diluted to variable concentrations configuration sulfur dioxide titer, then demarcate each solution and obtain dioxy
Change sulfur content and absorb strong and weak standard curve with spectrophotometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776838.9A CN106198431A (en) | 2016-08-31 | 2016-08-31 | A kind of method of former sulfur content of coal detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776838.9A CN106198431A (en) | 2016-08-31 | 2016-08-31 | A kind of method of former sulfur content of coal detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106198431A true CN106198431A (en) | 2016-12-07 |
Family
ID=58088361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610776838.9A Pending CN106198431A (en) | 2016-08-31 | 2016-08-31 | A kind of method of former sulfur content of coal detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106198431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061717A (en) * | 2017-12-28 | 2018-05-22 | 大工（青岛）新能源材料技术研究院有限公司 | The detection method of iron content in a kind of coal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4080715B2 (en) * | 2001-01-25 | 2008-04-23 | 日本電信電話株式会社 | Sulfur dioxide gas detection method, detection material and detection apparatus |
| CN101397265A (en) * | 2007-09-28 | 2009-04-01 | 天津市化学试剂研究所 | Pararosaniline hydrochloride and preparation technology of reserving liquid |
| CN103207152A (en) * | 2013-03-01 | 2013-07-17 | 中国水稻研究所 | Method for detecting sulfur dioxide in plant-derived food |
| CN103245622A (en) * | 2013-04-25 | 2013-08-14 | 淮阴师范学院 | Method for measuring total sulfur in fuel oil by using formaldehyde absorption-pararosaniline hydrochloride colorimetric method |
| CN104280515A (en) * | 2014-09-20 | 2015-01-14 | 中山鼎晟生物科技有限公司 | Kit and method for rapidly detecting sulfur dioxide in foods |
| CN104458618A (en) * | 2014-12-08 | 2015-03-25 | 敖云霞 | Formaldehyde measuring method for sulfur dioxide low-concentration condition |
-
2016
- 2016-08-31 CN CN201610776838.9A patent/CN106198431A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4080715B2 (en) * | 2001-01-25 | 2008-04-23 | 日本電信電話株式会社 | Sulfur dioxide gas detection method, detection material and detection apparatus |
| CN101397265A (en) * | 2007-09-28 | 2009-04-01 | 天津市化学试剂研究所 | Pararosaniline hydrochloride and preparation technology of reserving liquid |
| CN103207152A (en) * | 2013-03-01 | 2013-07-17 | 中国水稻研究所 | Method for detecting sulfur dioxide in plant-derived food |
| CN103245622A (en) * | 2013-04-25 | 2013-08-14 | 淮阴师范学院 | Method for measuring total sulfur in fuel oil by using formaldehyde absorption-pararosaniline hydrochloride colorimetric method |
| CN104280515A (en) * | 2014-09-20 | 2015-01-14 | 中山鼎晟生物科技有限公司 | Kit and method for rapidly detecting sulfur dioxide in foods |
| CN104458618A (en) * | 2014-12-08 | 2015-03-25 | 敖云霞 | Formaldehyde measuring method for sulfur dioxide low-concentration condition |
Non-Patent Citations (1)
| Title |
|---|
| 顾平 等: "哈尔滨市冬季大气颗粒物中二氧化硫的含量及稳定性研究", 《化学工程师》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061717A (en) * | 2017-12-28 | 2018-05-22 | 大工（青岛）新能源材料技术研究院有限公司 | The detection method of iron content in a kind of coal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183478B (en) | Method for determining hydrogen sulfide in gaseous phase of main stream smoke of cigarette | |
| CN108802256B (en) | Method for detecting content of monoethanolamine | |
| CN103499540B (en) | The assay method of hydrogen sulfide content and application thereof in methanol solution | |
| CN103134849A (en) | Quick method for simultaneously measuring potassium content and sodium content and calcium content and magnesium content in cigarette paper | |
| CN106442499A (en) | Method for measuring content of calcium carbonate in paper-making reconstituted tobacco | |
| WO2008155820A1 (en) | Method of specifying error and analyzer | |
| López-López et al. | Simple hollow fiber liquid membrane based pre-concentration of silver for atomic absorption spectrometry | |
| CN106198431A (en) | A kind of method of former sulfur content of coal detection | |
| JP2014190871A (en) | Method of measuring total organic carbon of heavy oxygen water | |
| CN101915743A (en) | Method for calibrating online ozone analyzer | |
| CN102156103A (en) | Determination method for indirectly measuring sulfureted hydrogen in mainstream smoke gas phase of cigarette by copper color method | |
| CN105954275A (en) | Method for determination of sulfides in cigarette smoke | |
| CN103149206A (en) | Method for detecting trace iodine ion content in brine and industrial salt | |
| CN102288605A (en) | Method for rapidly determining iron content in concentrated sulphuric acid | |
| CN103454356A (en) | Method for determining total chlorine content in direct coal liquefaction product | |
| CN102914513A (en) | Analysis detection method of iron element in vanadium carbide | |
| CN102607900A (en) | Coal gas sampling method for determining content of hydrogen cyanide in coal gas | |
| CN102539563A (en) | Method for measuring organic amine components in flue gas desulfurization solution | |
| CN104729900A (en) | Sample pre-treatment method for detecting lead element content in diesel oil by atomic absorption method | |
| CN101782523B (en) | Method for online detecting arsenic content in water by using dithioantipyrine methane as color developing agent | |
| CN102323226A (en) | A kind of method of measuring three nitrogen concentrations in the water | |
| CN111157666A (en) | Method for simultaneously and quantitatively analyzing sulfite and sulfate ions in amine solution | |
| CN107014918B (en) | The detection method of polymethoxy dibutyl ethers content | |
| CN104677902A (en) | Method for determining sulfate radicals in organic amine absorption liquid in process of renewable wet flue gas desulphurization | |
| CN103528976A (en) | Method for determination of content of phosphorus in water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |