CN108872465A - The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas - Google Patents
The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas Download PDFInfo
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- CN108872465A CN108872465A CN201810768540.2A CN201810768540A CN108872465A CN 108872465 A CN108872465 A CN 108872465A CN 201810768540 A CN201810768540 A CN 201810768540A CN 108872465 A CN108872465 A CN 108872465A
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Abstract
The invention discloses the detection methods of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas, are related to air pollutants detection technique field, and the present invention includes the following steps, (1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia；(2) flue gas sampling：The exhaust gas that step (1) processing is completed is collected into sampling by flue gas sampler two sampling pipes of series connection, and is kept in respectively into two sampling pipes；(3) absorbing liquid is prepared：The Na of the 2.2mmol/L of equivalent is packed into first sampling pipe and second sampling pipe2CO3With 2.7mmol/L Na2HCO3；(4) amount of nitrogen oxides measures；(5) content of sulfur dioxide measures；(6) the advantages of result is calculated, the detection accuracy and detection efficiency of the raising ammonia-contaminated gas having.
Description
Technical field
The invention belongs to air pollutants detection technique fields, and in particular to sulfur dioxide, nitrogen oxygen in a kind of ammonia-contaminated gas
The detection method of compound.
Background technique
Sulfur dioxide and nitrogen oxides are common contaminants in atmosphere, can generate stimulation to the respiratory tract of human body, exist and lure
Send out the illnesss such as the infection of the upper respiratory tract and slow poisoning.With the continuous improvement of people's environmental consciousness, to the prison of all kinds of exhaust gas discharge
Control detection is also increasingly paid attention to.Currently, needing the content for each harmful components in exhaust gas to be examined in boiler waste gas discharge
It surveys, then is discharged after carrying out specific aim processing.For the prior art in wasted nickel catalyst, most common method is hydrochloride naphthodiamide light splitting
Photometry, although this detection method can detect the content of sulfur dioxide and nitrogen oxides, analysis time is long, and formality is numerous
It is trivial, and agents useful for same complicated component can cause secondary pollution to environment containing toxic component.
Summary of the invention
It is an object of the invention to：In order to solve SO 2 from fume and the analysis of nitrogen oxides detection method of the prior art
Time is long, and formality is cumbersome, and agents useful for same complicated component, containing toxic component, the problem of causing secondary pollution to environment, mentions
For the detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas.
The technical solution adopted by the present invention is as follows：
The detection method of sulfur dioxide, nitrogen oxides, includes the following steps in a kind of ammonia-contaminated gas,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the peroxidating for 0.7%-1.0% to first sampling pipe
Hydrogen after reacting a period of time, detects NO in reaction liquid3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.03%- that absorbing liquid is added into second sampling pipe and includes mass volume ratio
0.06% disodium EDTA after reacting a period of time, detects the NO in liquid2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
Preferably, the reaction time of first sampling pipe is 3min-5min in the step (4).
Preferably, the reaction time of second sampling pipe is 7min-11min in the step (5).
Preferably, being additionally provided with ammonium hydroxide recycling cabinet on sealed cistern in the step (1), ammonium hydroxide is recycled standby
With.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1, in the present invention, for the prior art in wasted nickel catalyst, most common method is hydrochloride naphthodiamide spectrophotometry,
Although this detection method can detect the content of sulfur dioxide and nitrogen oxides, analysis time is long, and formality is cumbersome, and used
Agent formulations are complicated, containing toxic component, can cause secondary pollution to environment.Especially containing the exhaust gas of ammonia, pollution
Stronger, for this problem, the present apparatus devises the method for being exclusively used in ammonia-contaminated gas composition detection, can be directed to the spy of ammonia-contaminated gas
Property, ammonia exhaust gas therein is removed, then carry out the content detection of sulfur dioxide, nitrogen oxides first, is substantially increased containing ammonia
The detection accuracy and detection efficiency of exhaust gas.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Therefore, the detailed description of the embodiment of the present invention presented below is not intended to limit claimed invention
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
The detection method of sulfur dioxide, nitrogen oxides, includes the following steps in a kind of ammonia-contaminated gas,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the peroxidating for 0.7%-1.0% to first sampling pipe
Hydrogen after reacting a period of time, detects NO in reaction liquid3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.03%- that absorbing liquid is added into second sampling pipe and includes mass volume ratio
0.06% disodium EDTA after reacting a period of time, detects the NO in liquid2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
Preferably, the reaction time of first sampling pipe is 3min-5min in the step (4).
Preferably, the reaction time of second sampling pipe is 7min-11min in the step (5).
Preferably, being additionally provided with ammonium hydroxide recycling cabinet on sealed cistern in the step (1), ammonium hydroxide is recycled standby
With.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas that present pre-ferred embodiments provide, including
Following steps,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the peroxidating for 0.7%-1.0% to first sampling pipe
Hydrogen after reacting a period of time, detects NO in reaction liquid3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.03%- that absorbing liquid is added into second sampling pipe and includes mass volume ratio
0.06% disodium EDTA after reacting a period of time, detects the NO in liquid2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
The reaction time of first sampling pipe is 3min-5min in the step (4).
The reaction time of second sampling pipe is 7min-11min in the step (5).
It is additionally provided with ammonium hydroxide recycling cabinet on sealed cistern in the step (1), ammonium hydroxide is recycled spare.
The working principle of the present embodiment is as follows：In the present invention, for the prior art in wasted nickel catalyst, most common method is salt
Sour naphthodiamide spectrophotometry, although this detection method can detect the content of sulfur dioxide and nitrogen oxides, analysis
Time is long, and formality is cumbersome, and agents useful for same complicated component, containing toxic component, can cause secondary pollution to environment.Especially contain
There is the exhaust gas of ammonia, pollution is stronger, and for this problem, the present apparatus devises the side for being exclusively used in ammonia-contaminated gas composition detection
Method can be directed to the characteristic of ammonia-contaminated gas, ammonia exhaust gas therein be removed first, then carry out sulfur dioxide, nitrogen oxides contains
Amount detection, substantially increases the detection accuracy and detection efficiency of ammonia-contaminated gas.
Embodiment 2
The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas that present pre-ferred embodiments provide, including
Following steps,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the hydrogen peroxide for 0.7%, instead to first sampling pipe
After answering a period of time, NO in reaction liquid is detected3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.03% that absorbing liquid is added into second sampling pipe and includes mass volume ratio
Disodium EDTA, react a period of time after, detect liquid in NO2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
Embodiment 3
The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas that present pre-ferred embodiments provide, including
Following steps,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the hydrogen peroxide for 1.0%, instead to first sampling pipe
After answering a period of time, NO in reaction liquid is detected3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.06% that absorbing liquid is added into second sampling pipe and includes mass volume ratio
Disodium EDTA, react a period of time after, detect liquid in NO2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
Embodiment 4
The detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas that present pre-ferred embodiments provide, including
Following steps,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia
Gas；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is adopted by two sampling pipes collections of flue gas sampler series connection
Sample, and kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：It is packed into the 2.2mmol/L's of equivalent into first sampling pipe and second sampling pipe
Na2CO3With 2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the hydrogen peroxide for 0.9%, instead to first sampling pipe
After answering a period of time, NO in reaction liquid is detected3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.04% that absorbing liquid is added into second sampling pipe and includes mass volume ratio
Disodium EDTA, react a period of time after, detect liquid in NO2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, can be obtained after conversion
Out in unit volume SO 2 from fume and nitrogen oxides content.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. the detection method of sulfur dioxide, nitrogen oxides in a kind of ammonia-contaminated gas, which is characterized in that include the following steps,
(1) ammonia filters out：Exhaust gas is passed into the sink of sealing with constant speed and is washed, remove containing ammonia；
(2) flue gas sampling：The exhaust gas that step (1) processing is completed is collected into sampling by flue gas sampler two sampling pipes of series connection,
And it is kept in respectively into two sampling pipes；
(3) absorbing liquid is prepared：The Na of the 2.2mmol/L of equivalent is packed into first sampling pipe and second sampling pipe2CO3With
2.7mmol/L Na2HCO3；
(4) amount of nitrogen oxides measures：Percent volume is passed through than the hydrogen peroxide for 0.7%-1.0% to first sampling pipe,
After reacting a period of time, NO in reaction liquid is detected3 -Content and record；
(5) content of sulfur dioxide measures：It is 0.03%- that absorbing liquid is added into second sampling pipe and includes mass volume ratio
0.06% disodium EDTA after reacting a period of time, detects the NO in liquid2 -And NO3 -And it records；
(6) result is calculated：The NO that will be measured in step (4) and (5)2 -And NO3 -Content summarize, unit that you can get it after conversion
The content of SO 2 from fume and nitrogen oxides in volume.
2. the detection method of sulfur dioxide, nitrogen oxides in ammonia-contaminated gas as described in claim 1, it is characterised in that：It is described
The reaction time of first sampling pipe is 3min-5min in step (4).
3. the detection method of sulfur dioxide, nitrogen oxides in ammonia-contaminated gas as described in claim 1, it is characterised in that：It is described
The reaction time of second sampling pipe is 7min-11min in step (5).
4. the detection method of sulfur dioxide, nitrogen oxides in ammonia-contaminated gas as described in claim 1, it is characterised in that：It is described
It is additionally provided with ammonium hydroxide recycling cabinet on sealed cistern in step (1), ammonium hydroxide is recycled spare.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111781300A (en) * | 2020-05-27 | 2020-10-16 | 金川集团股份有限公司 | Method for detecting concentration of nitrogen oxides in flue gas in low-nickel matte nitric acid leaching process |
| CN111999130A (en) * | 2020-08-31 | 2020-11-27 | 重庆惠能标普科技有限公司 | Anti-oxidation absorption liquid for collecting sulfur dioxide and preparation method thereof |
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| CN201040228Y (en) * | 2007-04-06 | 2008-03-26 | 东南大学 | Mixed solution combined device for removing sulphur dioxide and oxides of nitrogen from flue gas |
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| CN201040228Y (en) * | 2007-04-06 | 2008-03-26 | 东南大学 | Mixed solution combined device for removing sulphur dioxide and oxides of nitrogen from flue gas |
| CN103983748A (en) * | 2014-06-05 | 2014-08-13 | 北京国电清新环保技术股份有限公司 | Method and device for testing active coke desulfurization and denitration performance characterization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781300A (en) * | 2020-05-27 | 2020-10-16 | 金川集团股份有限公司 | Method for detecting concentration of nitrogen oxides in flue gas in low-nickel matte nitric acid leaching process |
| CN111999130A (en) * | 2020-08-31 | 2020-11-27 | 重庆惠能标普科技有限公司 | Anti-oxidation absorption liquid for collecting sulfur dioxide and preparation method thereof |
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