CN106018012A - Preprocessing device for boiler tail oxygen analysis - Google Patents
Preprocessing device for boiler tail oxygen analysis Download PDFInfo
- Publication number
- CN106018012A CN106018012A CN201610369818.XA CN201610369818A CN106018012A CN 106018012 A CN106018012 A CN 106018012A CN 201610369818 A CN201610369818 A CN 201610369818A CN 106018012 A CN106018012 A CN 106018012A
- Authority
- CN
- China
- Prior art keywords
- boiler tail
- sensor
- gas
- air
- air ejector
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000001301 oxygen Substances 0.000 title claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 24
- 238000004458 analytical method Methods 0.000 title claims abstract description 14
- 238000007781 pre-processing Methods 0.000 title abstract 3
- 239000007789 gas Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 9
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 17
- 238000010926 purge Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A preprocessing device for boiler tail oxygen analysis comprises a box body with a square upper portion and a tapered lower portion, and one end of the box body is provided with a guiding tube, and the guiding tube is inserted to a boiler tail wall and is connected with smoke at the boiler tail; the other end of the body is provided with an air suction tube, the gas suction tube is connected with an air sucker, and the air suction tube is provided with a zirconia analyzer; two ends of the air sucker are respectively provided with a compressed air inlet and a compressed air outlet; and a group of upper separator plates and a group of lower separator plates are obliquely arranged in the box body. The device allows a sensor to be always in clean environment, so adverse influences of dusts on the sensor are avoided, and the sensitivity and the precision of the sensor are guaranteed, that is, the zirconia analyzer can accurately measure the oxygen content of a gas through the clean gas; and long-term timely blowing of the sensor with compressed air is not needed, so the blowing wearing is avoided, the life of the sensor is prolonged, and the zirconia use cost is saved for users. The device is suitable for preprocessing for boiler tail oxygen analysis.
Description
Technical field
The present invention relates to sampler, particularly relate to the pretreatment unit of boiler tail oxygen analysis.
Background technology
Current most of boiler tail oxygen concentration analyses use on-line oxidation zirconium analyser, and Zirconium oxide analyzer passes it
Sensor part stretches into boiler internal and detects.Owing to boiler tail fuel gas and dust concentration is higher, easily adhere on a sensor,
The contact surface making sensor and gas reduces.Along with the increase of the amount of attachment dust, the sensitivity of sensor and precision all can go out
Now drop, therefore the oxygen density value fluctuation causing Zirconium oxide analyzer inspection to be surveyed relatively greatly or relatively large deviation occurs with actual value.
In prior art, majority is to use compressed air to purge, in certain journey the timing of zirconia sensor part
Dust in attached sensors can be removed on degree, but the dust of attachment often exists dead angle, it is impossible to thoroughly purge.Make for a long time
Still having one layer of dust with rear sensor cannot purge totally, the accuracy and sensitivity of sensor still can reduce.And periodically
Purging sensor, Sensor section is easily subject to the abrasion of blowing force, and this can shorten sensor service life.
Through retrieval, the Chinese patent relating to boiler oxygen measurement has No. ZL2014204127933 " a kind of CFB boiler tail cigarette
Measurement of oxygen content sampler ", No. ZL2014201789871 " a kind of boiler back end ductwork oxygen content measuring system " two pieces.Above-mentioned
Technical scheme can not solve boiler tail fuel gas and dust and make sensitivity and the technical barrier of precision appearance decline of sensor.
Summary of the invention
It is desirable to provide the pretreatment unit of boiler tail oxygen analysis, with solve dust to the attachment of sensor,
Cause a difficult problem for sensor accuracy and sensitivity decrease, avoid making sensor abrasion shorten with compressed air purging for a long time simultaneously
Service life.
The pretreatment unit of boiler tail oxygen analysis that inventor provides has a top to be divided into square, bottom to be divided into cone
The casing of shape, its one end has mozzle to insert boiler tail wall, with the flue gas UNICOM of boiler tail；The other end have exhaust tube with
Air ejector UNICOM, exhaust tube is provided with Zirconium oxide analyzer;Air ejector two ends are compressed-air actuated inlet and outlet respectively；
Box house installs one group of upper spacer and one group of lower clapboard obliquely, and for intercepting the dust in gas, dust touches on dividing plate
Hit, concentrate the conical section falling into casing.
The top of above-mentioned casing is provided with flush pipe, and flush pipe is provided with flushing valve；The bottom of casing taper is provided with
Blow-off pipe, blow-off pipe is provided with blowoff valve.
Above-mentioned air ejector compressed air quickly flows into, and makes air ejector inside and outside formation certain pressure poor, drives mozzle
Gas is followed air ejector outlet and is discharged.
The use principle of the pretreatment unit of the boiler tail oxygen analysis that inventor provides is:
After the gas extracted out from the inside of boiler enters dust collecting box by mozzle, at the dynamic action that air ejector provides
Under, first collide upper spacer so that part dust falls in water in the stop of upper spacer, and the water surface and upper spacer exist certain
Space, it is ensured that the circulation of gas；Then the gas collisions water surface, owing to the impact of the flowing pressure of gas makes the powder of the water surface
Dirt sinks rapidly in water, simultaneously submerged in the water when contacting of dust self-contained for gas with the water surface；Then gas is toward upper
Dynamic collision lower clapboard, owing to lower clapboard has the stop of certain inclination and horizontal baffle, gas collisions lower clapboard also to be stopped
A part of dust is down fallen into the water.Because the dust of submerged will not flow away with gas, repeated multiple times carry out colliding, warp
After crossing multistep treatment, finally after collecting box, mozzle gas out is the most non-dusting cleaning gas, and zirconium oxide passes
Sensor is arranged on rear mozzle, detects the gas of cleaning；Contact cleaning gas would not be affected by dust attachment,
Under clean environment, sensing can ensure accuracy and sensitivity for a long time.
Inventor points out: first, and the oxygen contained in boiler tail gas, because being not readily dissolved in water, therefore uses water to adsorb
Dust does not results in the loss of oxygen content；The reaction of other gases contained and water also will not generate new oxygen, therefore this dress
Putting for the oxygen content coordinating Zirconium oxide analyzer to measure boiler tail is very effective a kind of pretreatment unit；Second, take out
The powered compressor air of gas control almost can boiler inside gas extract out, excessive steam may be taken out of；The
Three, the water surface can not flood upper spacer, not so can gas can be poor by property.
The pretreatment unit of the boiler tail oxygen analysis of the present invention, makes sensor be always under clean environment, keeps away
Exempt from the dust harmful effect to sensor, it is ensured that the sensitivity of sensor and precision, i.e. Zirconium oxide analyzer are by cleaning
Gas can accurately measure the oxygen content in gas；And owing to being not required to, timing purging sensor long-term by compressed air, also
The most there is not the abrasion of blowing force, extend sensor life-time, save zirconic use cost for user yet.It is applicable to boiler
The pretreatment of afterbody oxygen analysis.
Accompanying drawing explanation
Fig. 1 is the pretreatment unit schematic diagram of the boiler tail oxygen analysis of the present invention.
In figure, 1. it is boiler tail wall, is 2. mozzle, be 3. upper spacer, be 4. lower clapboard, 5. for flushing valve, 6.
For blowoff valve, 7. it is water, is 8. Zirconium oxide analyzer, be 9. air ejector,For compressed air inlet.
Detailed description of the invention
Following example are used for further illustrating assembly of the invention.
Implementing the pretreatment unit of the boiler tail oxygen analysis of such as Fig. 1, it has a top to be divided into square, bottom
Being divided into the casing of taper, its one end has mozzle 2 to insert boiler tail wall 1, with the flue gas UNICOM of boiler tail；The other end has
Exhaust tube and air ejector 9 UNICOM, exhaust tube is provided with Zirconium oxide analyzer 8;Air ejector 9 two ends are compressed-air actuated respectively
Import 10 and outlet；Box house installs one group of upper spacer 3 and one group of lower clapboard 4 obliquely.
Above-mentioned casing top is provided with flush pipe, and flush pipe is provided with flushing valve 5；The bottom of casing taper is provided with row
Dirty pipe, blow-off pipe is provided with blowoff valve 6.Casing is built with water 7.
Air ejector 9 quickly flows into by compressed air, makes air ejector inside and outside formation certain pressure poor, drives the gas of mozzle
Follow air ejector outlet to discharge.
Claims (3)
1. the pretreatment unit of boiler tail oxygen analysis, it is characterised in that it has a top to be divided into square, bottom to be divided into cone
The casing of shape, its one end has mozzle to insert boiler tail wall, with the flue gas UNICOM of boiler tail；The other end have exhaust tube with
Air ejector UNICOM, exhaust tube is provided with Zirconium oxide analyzer;Air ejector two ends are compressed-air actuated inlet and outlet respectively；
Box house installs one group of upper spacer and one group of lower clapboard obliquely.
2. device as claimed in claim 1, it is characterised in that casing top is provided with flush pipe, and flush pipe is provided with flushing
Valve；The bottom of casing taper is provided with blow-off pipe, and blow-off pipe is provided with blowoff valve；Casing is built with water.
3. device as claimed in claim 1, it is characterised in that described air ejector compressed air quickly flows into, in making air ejector
Outer formation certain pressure is poor, drives the gas of mozzle to follow air ejector outlet and discharges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369818.XA CN106018012A (en) | 2016-05-30 | 2016-05-30 | Preprocessing device for boiler tail oxygen analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369818.XA CN106018012A (en) | 2016-05-30 | 2016-05-30 | Preprocessing device for boiler tail oxygen analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106018012A true CN106018012A (en) | 2016-10-12 |
Family
ID=57092359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610369818.XA Pending CN106018012A (en) | 2016-05-30 | 2016-05-30 | Preprocessing device for boiler tail oxygen analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106018012A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121619U (en) * | 1991-03-02 | 1992-11-11 | 王之顺 | Exhaust purification device of no-chimney boiler |
| EP0570684A1 (en) * | 1992-05-18 | 1993-11-24 | TESTOTERM FRITZSCHING GmbH & Co. | Gas sampling device for combustion gas analyser |
| CN201387423Y (en) * | 2009-04-07 | 2010-01-20 | 北京三博中自科技有限公司 | Transverse oxygen content detecting device of burnt gas in coke oven |
| CN201425563Y (en) * | 2009-05-21 | 2010-03-17 | 苏州宝化炭黑有限公司 | Portable carbon black flue gas purification and detection device |
| CN102095773A (en) * | 2009-12-09 | 2011-06-15 | 华北电力科学研究院有限责任公司 | Smoke oxygen content measurement method and system |
-
2016
- 2016-05-30 CN CN201610369818.XA patent/CN106018012A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121619U (en) * | 1991-03-02 | 1992-11-11 | 王之顺 | Exhaust purification device of no-chimney boiler |
| CN2142536Y (en) * | 1991-03-02 | 1993-09-22 | 王之顺 | Dust-removing, desulfation and energy-saving device for boiler |
| EP0570684A1 (en) * | 1992-05-18 | 1993-11-24 | TESTOTERM FRITZSCHING GmbH & Co. | Gas sampling device for combustion gas analyser |
| CN201387423Y (en) * | 2009-04-07 | 2010-01-20 | 北京三博中自科技有限公司 | Transverse oxygen content detecting device of burnt gas in coke oven |
| CN201425563Y (en) * | 2009-05-21 | 2010-03-17 | 苏州宝化炭黑有限公司 | Portable carbon black flue gas purification and detection device |
| CN102095773A (en) * | 2009-12-09 | 2011-06-15 | 华北电力科学研究院有限责任公司 | Smoke oxygen content measurement method and system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |