CN106802265A - A kind of blank test method suitable for the test of flue dust low concentration - Google Patents
A kind of blank test method suitable for the test of flue dust low concentration Download PDFInfo
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- CN106802265A CN106802265A CN201710049606.8A CN201710049606A CN106802265A CN 106802265 A CN106802265 A CN 106802265A CN 201710049606 A CN201710049606 A CN 201710049606A CN 106802265 A CN106802265 A CN 106802265A
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- blank
- filter membrane
- test
- sample
- sampling
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 239000003500 flue dust Substances 0.000 title claims abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 15
- 239000012496 blank sample Substances 0.000 claims abstract description 14
- 238000011156 evaluation Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000003189 isokinetic effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005303 weighing Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
Abstract
The present invention relates to a kind of blank test method suitable for the test of flue dust low concentration, comprise the following steps successively：Prepared by blank sample, blank test sample is obtained, test specimen is processed, blank test result is commented；Advantages of the present invention：Prepared by blank sample, blank test sample is obtained, test specimen treatment, the test procedure that blank test result is commented is tested blank sample, and entirely test procedure is simple to operate, operating personnel are easily mastered, and evaluation index is clear and definite, can be suitably used for being modified test result in the test of flue dust low concentration, improve the accuracy of measurement data, it is put under 105~110 DEG C of constant temperature after being numbered to qualified filter membrane in step one, drying 2h, it is put into special filter cylinder measuring cup, it is placed in and room temperature is cooled in drier, filter membrane effect of weightlessness when can eliminate high temperature samples, filter membrane quality in step one is weighed up by the balance of sensibility reciprocal 0.01mg, quality reads convenient, the error for weighing and can be reduced.
Description
Technical field
The present invention relates to a kind of blank test method suitable for the test of flue dust low concentration.
Background technology
With the fast development of Chinese national economy, air environmental pollution problem is increasingly serious, haze in big and medium-sized cities,
The diastrous weathers such as acid rain take place frequently, and have had a strong impact on physical and mental health and the normal life of people, and coal-burning power plant is used as atmosphere pollution
One of important pollution sources of thing discharge, the existing dust being collected into by filter is weighed, so as to convert obtain flue gas
Middle dust concentration value, can not meet the test request of present low smoke dust discharge concentration, there is a problem of that test data is inaccurate.
The content of the invention
The technical problem to be solved in the present invention is just to provide a kind of blank test method suitable for the test of flue dust low concentration,
Solve the problems, such as that existing test data is inaccurate.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：It is low that one kind is applied to flue dust
The blank test method of concentration determination, comprises the following steps successively：
Step one：It is prepared by blank sample：First select with proper testing experiment identical material, with a batch of filter membrane,
And dried together with sampling filter membrane and weigh, it is put under 105~110 DEG C of constant temperature after filter membrane numbering that again will be qualified, dry
2h, is then placed in filter cylinder measuring cup, is placed in being cooled to room temperature in drier, and the filter membrane after cooling is in the day of sensibility reciprocal 0.01mg
Quality is weighed up on flat, and performs record, aforesaid operations are finally repeated under the conditions of constant temperature and humidity, same filter membrane weighs deviation twice
It is -0.1~0.1mg；
Step 2：Blank test sample is obtained：Filter membrane after prepared by step one is to each measuring point on coaxial line with identical
Time carry out isokinetic sampling, scene obtains blank test sample, smoke dust sampling pump during sampling not to be evacuated state, mouth of sampling
Back to flue gas direction of flow, and sampling gun is heated to 155~165 DEG C；
Step 3：Test specimen treatment：The blank test sample that step 2 is obtained is dried into title together with sampling filter membrane
Weight, baking oven is put into by filter membrane, under 105~110 DEG C of constant temperature, dries 2h, and filter membrane is put into special measuring cup by drying after terminating
In, it is placed in and room temperature is cooled in drier, then the quality of filter membrane is weighed up on sensibility reciprocal 0.01mg balances, and record is performed, in perseverance
Under the conditions of constant temperature and humidity, aforesaid operations are repeated, same filter membrane weighs difference no more than 0.1mg twice；
Step 4：Blank test evaluation of result：Test sample after step 3 is processed carries out blank value inspection
Survey, and blank value is no more than 10% of particle concentration limit value during testing, and the particulate matter that filter membrane is collected during experiment
Weightening more than blank sample mass deviation on the occasion of 5 times.
Preferably, the blank sample in step one is replaced by filter cylinder, and same filter cylinder weigh twice deviation for -0.3~
0.3mg, adapts to different experimental enviroments and experimental condition, and Practical Performance is good, can improve the accuracy of data.
In sum, advantages of the present invention：1. prepared by blank sample, blank test sample is obtained, at test specimen
The test procedure that reason, blank test result are commented is tested blank sample, and whole test procedure is simple to operate, operating personnel
It is easily mastered, and evaluation index is clearly, can be suitably used for being modified test result in the test of flue dust low concentration, improves measurement
The accuracy of data；
2. it is put under 105~110 DEG C of constant temperature after being numbered to qualified filter membrane in step one, dries 2h, is put into special
Filter cylinder measuring cup in, be placed in and room temperature be cooled in drier, filter membrane effect of weightlessness when can eliminate high temperature samples；
3. the filter membrane quality in step one is weighed up by the balance of sensibility reciprocal 0.01mg, and it is convenient that quality reads, and can be reduced and is claimed
The error of amount；
4. the method tested in step 2 is arranged to carry out constant speed with the identical time to each measuring point on filter membrane coaxial line
Sampling, layouts movement when can guarantee that sampling by grid, improves the degree of accuracy of sampling, and sampling efficiency is high；
5. sampling mouth when sampling is arranged to back to flue gas direction of flow, and sampling gun is heated to 155~165 DEG C, can improve
The quality of sampling, adapts to the flue gas under varying environment, and Practical Performance is good, it is ensured that the security of sampling gun collection.
Specific embodiment
A kind of blank test method suitable for the test of flue dust low concentration, comprises the following steps successively：
Step one：It is prepared by blank sample：First select with proper testing experiment identical material, with a batch of filter membrane,
And dried together with sampling filter membrane and weigh, it is put under 105~110 DEG C of constant temperature after filter membrane numbering that again will be qualified, dry
2h, is then placed in filter cylinder measuring cup, is placed in being cooled to room temperature in drier, and the filter membrane after cooling is in the day of sensibility reciprocal 0.01mg
Quality is weighed up on flat, and performs record, aforesaid operations are finally repeated under the conditions of constant temperature and humidity, same filter membrane weighs deviation twice
It is -0.1~0.1mg；
Step 2：Blank test sample is obtained：Filter membrane after prepared by step one is to each measuring point on coaxial line with identical
Time carry out isokinetic sampling, scene obtains blank test sample, smoke dust sampling pump during sampling not to be evacuated state, mouth of sampling
Back to flue gas direction of flow, and sampling gun is heated to 155~165 DEG C；
Step 3：Test specimen treatment：The blank test sample that step 2 is obtained is dried into title together with sampling filter membrane
Weight, baking oven is put into by filter membrane, under 105~110 DEG C of constant temperature, dries 2h, and filter membrane is put into special measuring cup by drying after terminating
In, it is placed in and room temperature is cooled in drier, then the quality of filter membrane is weighed up on sensibility reciprocal 0.01mg balances, and record is performed, in perseverance
Under the conditions of constant temperature and humidity, aforesaid operations are repeated, same filter membrane weighs difference no more than 0.1mg twice；
Step 4：Blank test evaluation of result：Test sample after step 3 is processed carries out blank value inspection
Survey, and blank value is no more than 10% of particle concentration limit value during testing, and the particulate matter that filter membrane is collected during experiment
Weightening more than blank sample mass deviation on the occasion of 5 times.
Blank sample in step one is replaced by filter cylinder, and same filter cylinder weighs deviation for -0.3~0.3mg twice, energy
Different experimental enviroments and experimental condition are adapted to, Practical Performance is good, can improve the accuracy of data.
In addition to above preferred embodiment, the present invention also has other implementation methods, and those skilled in the art can be according to this
Invention is variously modified and deforms, and without departing from spirit of the invention, all should belong to appended claims of the present invention and determine
The scope of justice.
Claims (2)
1. it is a kind of suitable for flue dust low concentration test blank test method, it is characterised in that：Comprise the following steps successively：
Step one：It is prepared by blank sample：First select with proper testing experiment identical material, with a batch of filter membrane, and with
Sampling filter membrane is dried weigh together, will be put under 105~110 DEG C of constant temperature after qualified filter membrane numbering again, dries 2h, so
After be put into filter cylinder measuring cup, be placed in being cooled to room temperature in drier, the filter membrane after cooling is on the balance of sensibility reciprocal 0.01mg
Weigh up quality, and perform record, finally under the conditions of constant temperature and humidity repeat aforesaid operations, same filter membrane weigh twice deviation for-
0.1~0.1mg；
Step 2：Blank test sample is obtained：Filter membrane after prepared by step one to each measuring point on coaxial line with identical when
Between carry out isokinetic sampling, scene obtains blank test sample, smoke dust sampling pump during sampling not to be evacuated state, sampling mouth back to
Flue gas direction of flow, and sampling gun is heated to 155~165 DEG C；
Step 3：Test specimen treatment：The blank test sample that step 2 is obtained is dried together with sampling filter membrane and is weighed, will
Filter membrane is put into baking oven, under 105~110 DEG C of constant temperature, dries 2h, and be put into filter membrane in special measuring cup after terminating, put by drying
In being cooled to room temperature in drier, then the quality of filter membrane is weighed up on sensibility reciprocal 0.01mg balances, and perform record, in constant temperature and humidity
Under the conditions of, aforesaid operations are repeated, same filter membrane weighs difference no more than 0.1mg twice；
Step 4：Blank test evaluation of result：Test sample after step 3 is processed carries out blank value detection, and
Blank value is no more than 10% of particle concentration limit value during testing, and the particulate matter weightening that filter membrane is collected during experiment surpasses
Cross blank sample mass deviation on the occasion of 5 times.
2. it is according to claim 1 it is a kind of suitable for flue dust low concentration test blank test method, it is characterised in that：Step
Blank sample in rapid one is replaced by filter cylinder, and same filter cylinder weighs deviation for -0.3~0.3mg twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049606.8A CN106802265A (en) | 2017-01-23 | 2017-01-23 | A kind of blank test method suitable for the test of flue dust low concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710049606.8A CN106802265A (en) | 2017-01-23 | 2017-01-23 | A kind of blank test method suitable for the test of flue dust low concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106802265A true CN106802265A (en) | 2017-06-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710049606.8A Pending CN106802265A (en) | 2017-01-23 | 2017-01-23 | A kind of blank test method suitable for the test of flue dust low concentration |
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| CN (1) | CN106802265A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449684A (en) * | 2017-07-31 | 2017-12-08 | 浙江菲达环保科技股份有限公司 | A kind of human-computer interaction particulate matter automatic weighing device |
| CN111103221A (en) * | 2020-01-02 | 2020-05-05 | 神华神东煤炭集团有限责任公司 | Detection method and detection system for dust space-time distribution of fully mechanized coal mining face of coal mine |
| CN112903511A (en) * | 2021-01-28 | 2021-06-04 | 山东合创环保科技有限公司 | Control method for reducing mass deviation in weighing overdue of filter cartridge and filter membrane and preparation method thereof |
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| CN103439151A (en) * | 2013-08-08 | 2013-12-11 | 国家电网公司 | Filter cartridge processing method for fiberglass filter cartridge sampling tube |
| CN104330323A (en) * | 2014-11-14 | 2015-02-04 | 国家电网公司 | Method for reducing smoke dust concentration measurement errors of thermal power plant flue gas |
| CN104359717A (en) * | 2014-11-17 | 2015-02-18 | 上海明华电力技术工程有限公司 | Device and method for sampling and testing low-concentration particulate matter in humidity-saturated flue gas of pollutant source |
| CN105352843A (en) * | 2015-10-26 | 2016-02-24 | 钱天鸣 | Weighing analysis method of fiber glass filter cartridge in determination of particulate matter in stationary pollution source |
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2017
- 2017-01-23 CN CN201710049606.8A patent/CN106802265A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103439151A (en) * | 2013-08-08 | 2013-12-11 | 国家电网公司 | Filter cartridge processing method for fiberglass filter cartridge sampling tube |
| CN104330323A (en) * | 2014-11-14 | 2015-02-04 | 国家电网公司 | Method for reducing smoke dust concentration measurement errors of thermal power plant flue gas |
| CN104359717A (en) * | 2014-11-17 | 2015-02-18 | 上海明华电力技术工程有限公司 | Device and method for sampling and testing low-concentration particulate matter in humidity-saturated flue gas of pollutant source |
| CN105352843A (en) * | 2015-10-26 | 2016-02-24 | 钱天鸣 | Weighing analysis method of fiber glass filter cartridge in determination of particulate matter in stationary pollution source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449684A (en) * | 2017-07-31 | 2017-12-08 | 浙江菲达环保科技股份有限公司 | A kind of human-computer interaction particulate matter automatic weighing device |
| CN111103221A (en) * | 2020-01-02 | 2020-05-05 | 神华神东煤炭集团有限责任公司 | Detection method and detection system for dust space-time distribution of fully mechanized coal mining face of coal mine |
| CN112903511A (en) * | 2021-01-28 | 2021-06-04 | 山东合创环保科技有限公司 | Control method for reducing mass deviation in weighing overdue of filter cartridge and filter membrane and preparation method thereof |
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Application publication date: 20170606 |