CN200996910Y - Sulfur trioxide sampler in smoke - Google Patents
Sulfur trioxide sampler in smoke Download PDFInfo
- Publication number
- CN200996910Y CN200996910Y CN 200620163937 CN200620163937U CN200996910Y CN 200996910 Y CN200996910 Y CN 200996910Y CN 200620163937 CN200620163937 CN 200620163937 CN 200620163937 U CN200620163937 U CN 200620163937U CN 200996910 Y CN200996910 Y CN 200996910Y
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- Prior art keywords
- pipe
- sampling
- flue gas
- dust removal
- removal head
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Abstract
A sampling device for sampling sulfuric anhydride from flue gas is provided, which is characterized in: the sampling device comprises a dust removing mechanism (1), a sampling tube (2), a helical collection tube (3), and a suction mechanism (4), wherein, the dust removing mechanism (1) is mounted at the inlet of the sampling tube (2), the outlet of the sampling tube (2) is connected to the inlet of the helical collection tube (3) through a tube, the inlet and outlet of the helical collection tube (3) are located above the helix, and the outlet communicates to the suction mechanism (4) through a silicone hose (5).
Description
Technical field
The utility model relates to a kind of sampling thief of gas, relates in particular to the sampling apparatus of sulfuric anhydride in the flue gas.
Background technology
For clear component and the content of understanding gas in thermal power plant's flue, need sample, chemically examine the gas in the flue.Can measure the moisture in the flue gas and the content of other material though be widely used in the flue gas analyzer of power-plant flue gas constituent analysis, not test SO
3This function of content.This mainly is because SO
3The moisture that absorbs in the flue gas can react generation sulfuric acid droplet rapidly, and this just may cause SO
3Meeting is condensed with the sulfuric acid mist form and is sticked on the instrument transmission pipeline in being transferred to the apparatus measures terminal procedures, causes sampling error and instrument is produced strong corrosion.
SO in the power plant boiler flue gas
3Though content seldom because SO
3Very easily combine and form sulfuric acid vapor with water vapour in the flue gas.The adiabatic condensation temperature of sulfuric acid vapor is called acid dew point in the flue gas.Sulfuric acid vapor is lower than at wall temperature on the heating surface of acid dew point and condenses, and can cause heavy corrosion to heating surface or sweetener, and this is called acid dew piont corrosion.SO in the flue gas
3Content the more, acid dew-point temperature is just high more, easy more the corrosion, the corrosion scope is wide more also serious more.The acid dew point of flue gas can reach 140～160 ℃, even higher.Power plant has to improve exhaust gas temperature for avoiding acid dew piont corrosion, has wasted a large amount of thermals source.For better solving the acid dew piont corrosion problem, power plant usually will test SO in the flue gas during operation
3Content.
The utility model content
Technical problem to be solved in the utility model is to provide the sampling apparatus of sulfuric anhydride in a kind of flue gas, for the content of analyzing sulfuric anhydride in the flue gas.
The technical solution of the utility model is as follows: the sampling apparatus of sulfuric anhydride in a kind of flue gas, comprise dedusting mechanism, sampling pipe, spiral collection tube and aspirating mechanism, wherein dedusting mechanism is installed in the inlet end of sampling pipe, the endpiece of this sampling pipe is connected by the import of pipeline with the spiral collection tube, the import and export of described spiral collection tube all is positioned at spiral upper end, and its outlet communicates with described aspirating mechanism by silica gel hose.
The utility model provides power by aspirating mechanism, during use, sampling pipe is inserted in the thieff hatch at flue middle part, sampling pipe is fixed on the thieff hatch place by flange, under the effect of aspirating mechanism, the partial fume in the flue is drawn in the sampling pipe, and enters in the spiral collection tube through sampling pipe, the spiral collection tube is the glass chemistry goods, utilizes the centrifugal force that produces in spiral pipe in the flue gas aspiration procedure will be the SO of droplet shape
3Be collected in the spiral pipe, in order to analyzing.
The utility model can be to the SO in the flue gas
3Sample, for analyzing SO in the flue gas
3Content, be convenient to the coal-burning power plant and take appropriate measures, control flue gas in SO
3Content, to reduce acid dew piont corrosion, avoid reducing acid dew piont corrosion and causing the thermal source waste for improving exhaust gas temperature to flue and equipment.
Above-mentioned dedusting mechanism is made of dust removal head, absorbent cotton filtering bodies and iron wire, wherein dust removal head is a through-pipe structure, in the procephalic pipe of dedusting the absorbent cotton filtering bodies is housed, spacing by the iron wire of dust removal head front port, the rear end of dust removal head is threaded with described sampling pipe by joint.The absorbent cotton filtering bodies can prevent that dust from entering impact analysis result in the spiral collection tube.Connection of thread seals with sealant tape, to prevent smoke spillage; And protect joint screw thread with heat resistant adhesive tape.
Above-mentioned sampling pipe is made of interior pipe, electric heating thermal insulation band and outer tube, and the electric heating thermal insulation band also wraps up on inner pipe between interior pipe and outer tube.The electric heating thermal insulation band is tied up on inner pipe with the heat resistant adhesive tape compartment of terrain, carries out heated at constant temperature by temperature controller, is used for the insulation of flue gas, prevent flue gas Yin Wendu in sampling process reduce condense in in the pipe, avoided sampling error and to the corrosion of sampling pipe.
Above-mentioned aspirating mechanism is formed by connecting by pipeline successively by first Drexel bottle, vacuum pump, second Drexel bottle and wet gas meter, on the pipeline between first Drexel bottle and the vacuum pump barometric damper is housed.Wet gas meter is used to measure the flue gas volume of sampling; Drexel bottle reduces the water cut in the flue gas with the condensation in Drexel bottle of the moisture in the flue gas, has corrosive contaminant gases and just can't be trapped in vacuum pump and the wet gas meter, plays the protection instrument and avoids corroding; Two Drexel bottles play the B-grade condensation effect; The speed of ascending adjusting suction flue gas when control damper is used to begin to sample is with the protection wet gas meter.
During beneficial effect: the utlity model has modern design, simple in structure, implement characteristics such as easy, it can be to the SO in the flue gas
3Sample, so that accurately analyze SO in the flue gas
3Content, be convenient to the coal-burning power plant and take corresponding measure, control flue gas in SO
3Content, to reduce acid dew piont corrosion, avoid reducing acid dew piont corrosion and causing the thermal source waste for improving exhaust gas temperature to flue and equipment.Absorbing mechanism with other substitutes with the spiral collection tube, also can be used for measuring the content of other materials such as moisture in the flue gas, SOx, HCl, HF, and usable range is very extensive.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model is made of dedusting mechanism 1, sampling pipe 2, spiral collection tube 3 and aspirating mechanism 4 four major parts.Dedusting mechanism 1 comprises dust removal head 11, absorbent cotton filtering bodies 12 and iron wire 13, and wherein dust removal head 11 is a through-pipe structure, and absorbent cotton filtering bodies 12 in the pipe of dust removal head 11 front portions is spacing by the iron wire 13 of dust removal head 11 front ports.Sampling pipe 2 is made of interior pipe 21, electric heating thermal insulation band 22 and outer tube 23, tie up on interior pipe 21 electric heating thermal insulation band 22 usefulness heat resistant adhesive tape compartment of terrains, insert together then in the outer tube 23, outer tube 23 is threaded by the rear end of joint 6 with dust removal head 11, and pipe 21 communicates with dust removal head 11 in making.Spiral collection tube 3 be import and export all in the screw type through-pipe structure of upper end, its import is connected with the outlet of interior pipe 21 by wireway 8.Aspirating mechanism 4 is made up of parts such as first Drexel bottle 41, vacuum pump 42, second Drexel bottle 43 and wet gas meters 44, wherein the import of first Drexel bottle 41 is connected with the outlet of spiral collection tube 3 by silica gel hose 5, the outlet of first Drexel bottle 41 is joined by the silica gel hose 9 and the import of vacuum pump 42, on this silica gel hose 9 barometric damper 7 is housed; The outlet of vacuum pump 42 is connected with the inlet hose of second Drexel bottle 43, and the outlet of second Drexel bottle 43 communicates with wet gas meter 44 by silica gel hose.
The utility model is work like this: earlier sampling pipe 2 is inserted in the thieff hatch at flue middle part, be fixed on the thieff hatch place with ring flange.Open vacuum pump 42, open barometric damper 7, vacuum pump 42 pumping velocities are transferred to maximum, begin sampling, write down the initial reading of wet gas meter 44 simultaneously.When gathering required exhaust gas volumn, close vacuum pump 42, stop sampling, the termination reading of record gas meter 44.Take off being connected of spiral collection tube 3 inlet ends and endpiece at last, the entrance and exit end with one section silicone tube connection spiral collection tube prevents SO
3Leak, in order to analyzing.
Claims (4)
1, the sampling apparatus of sulfuric anhydride in a kind of flue gas, it is characterized in that: it comprises dedusting mechanism (1), sampling pipe (2), spiral collection tube (3) and aspirating mechanism (4), wherein dedusting mechanism (1) is installed in the inlet end of sampling pipe (2), the endpiece of this sampling pipe (2) is connected by the import of pipeline with spiral collection tube (3), the import and export of described spiral collection tube (3) all is positioned at spiral upper end, and its outlet communicates with described aspirating mechanism (4) by silica gel hose (5).
2, the sampling apparatus of sulfuric anhydride in the flue gas according to claim 1, it is characterized in that: described dedusting mechanism (1) is made of dust removal head (11), absorbent cotton filtering bodies (12) and iron wire (13), wherein dust removal head (11) is a through-pipe structure, in the pipe of dust removal head (11) front portion, absorbent cotton filtering bodies (12) is housed, iron wire (13) by dust removal head (11) front port is spacing, and the rear end of dust removal head (11) is threaded with described sampling pipe (2) by joint (6).
3, the sampling apparatus of sulfuric anhydride in the flue gas according to claim 1, it is characterized in that: described sampling pipe (2) is made of interior pipe (21), electric heating thermal insulation band (22) and outer tube (23), and electric heating thermal insulation band (22) is positioned between pipe (21) and the outer tube (23) and is wrapped on the pipe (21).
4, the sampling apparatus of sulfuric anhydride in the flue gas according to claim 1, it is characterized in that: described aspirating mechanism (4) is formed by connecting by pipeline successively by first Drexel bottle (41), vacuum pump (42), second Drexel bottle (43) and wet gas meter (44), on the pipeline between first Drexel bottle (41) and the vacuum pump (42) barometric damper (7) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620163937 CN200996910Y (en) | 2006-12-31 | 2006-12-31 | Sulfur trioxide sampler in smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620163937 CN200996910Y (en) | 2006-12-31 | 2006-12-31 | Sulfur trioxide sampler in smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200996910Y true CN200996910Y (en) | 2007-12-26 |
Family
ID=38995344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620163937 Expired - Lifetime CN200996910Y (en) | 2006-12-31 | 2006-12-31 | Sulfur trioxide sampler in smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200996910Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629878A (en) * | 2008-07-18 | 2010-01-20 | 通用电气公司 | System for sampling the airflow entering the compressor of a turbomachine |
| CN103439152A (en) * | 2013-08-26 | 2013-12-11 | 上海明华电力技术工程有限公司 | Polymorphic sampling system and method for sulfur trioxide in exhaust of stationary pollution source |
| CN106813954A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of sampling system suitable for the sampling of low concentration sulfur trioxide |
| CN111323328A (en) * | 2020-03-23 | 2020-06-23 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
-
2006
- 2006-12-31 CN CN 200620163937 patent/CN200996910Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629878A (en) * | 2008-07-18 | 2010-01-20 | 通用电气公司 | System for sampling the airflow entering the compressor of a turbomachine |
| CN101629878B (en) * | 2008-07-18 | 2013-08-21 | 通用电气公司 | System for sampling the airflow entering the compressor of a turbomachine |
| CN103439152A (en) * | 2013-08-26 | 2013-12-11 | 上海明华电力技术工程有限公司 | Polymorphic sampling system and method for sulfur trioxide in exhaust of stationary pollution source |
| CN106813954A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of sampling system suitable for the sampling of low concentration sulfur trioxide |
| CN111323328A (en) * | 2020-03-23 | 2020-06-23 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
| CN111323328B (en) * | 2020-03-23 | 2021-12-14 | 中国特种设备检测研究院 | Double-8-shaped wet-type desulfurization flue gas water holdup measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: CHONGQING UNIV ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Chongqing University Number: 52 Page: The title page Volume: 23 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Chongqing University Number: 52 Volume: 23 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: CHONGQING UNIV ¬ |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Zhong Neng yuan Neng Technology Co., Ltd. Assignor: CPI Yuanda Environmental-Protection Engineering Co., Ltd.|Chongqing University Contract fulfillment period: 2009.4.20 to 2015.4.19 Contract record no.: 2009110000138 Denomination of utility model: Sulfur trioxide sampler in smoke Granted publication date: 20071226 License type: Exclusive license Record date: 20090618 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.4.20 TO 2015.4.19; CHANGE OF CONTRACT Name of requester: BEIJING ZHONGDIAN YUANNENG SCIENCE CO., LTD. Effective date: 20090618 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071226 |
|
| EXPY | Termination of patent right or utility model |