CN205229043U - Flue gas analysis device - Google Patents
Flue gas analysis device Download PDFInfo
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- CN205229043U CN205229043U CN201521083814.2U CN201521083814U CN205229043U CN 205229043 U CN205229043 U CN 205229043U CN 201521083814 U CN201521083814 U CN 201521083814U CN 205229043 U CN205229043 U CN 205229043U
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- flue gas
- interface
- gas
- ultraviolet
- analysis device
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a flue gas analysis device, including a exhaust pipe and the flue gas that connects gradually processing unit, a sampling pump, a three way connection, an ultraviolet gas analysis appearance and an analysis appearance vacuum pump in advance, the gas outlet of sampling pump is connected three way connection's first interface, the air inlet of ultraviolet gas analysis appearance is connected three way connection's second interface, exhaust pipe's income gas port is connected three way connection's third interface, outside flue gas pipeline is connected to flue gas processing unit's income gas port in advance, has solved undulant problem and the humid air of analysis appearance flue gas flux effectively and has got into the problem that the analysis appearance influences normal operating, has the advantage that stability is strong, the accuracy is high.
Description
Technical field
The utility model relates to field of fume treatment equipment, particularly relates to a kind of flue gas analysis device.
Background technology
Current, each ministries and commissions of China, provinces and cities all formulate the action plan promoting coal electricity high-efficiency cleaning development level further, actively push forward coal unit (boiler) minimum discharge transformation, require that coal unit fume emission reaches the level of rock gas unit emission standard, namely sulfur dioxide emissioning concentration is no more than 35mg/m
3, this monitors (CEMS) continuously to fixed pollution source smoke discharge and proposes new challenge and task.
Domestic existing cold dry method Online monitoring of pollution sources system of directly taking out designs mainly for the pollutant emission limit of relatively high concentration, based on infrared non-dispersive (NDIR) monitoring method, there is significantly not enough and defect for ultra-clean exhausting low-concentration pollutant emission on-line monitoring in gas analyzer.The SO of NDIR gas analyzer
2minimum detectability 2-3mg/m
3, this index can not meet SO
2the 35mg/m of emission limit
3measure requirement, therefore select a flue gas analyzer being applicable to ultra-clean exhausting low-concentration pollutant emission on-line monitoring to be the most basic and most realistic matter of utmost importance.
Existing flue gas analysis system has several as follows:
1. refer to Fig. 1, a kind of typical infrared flue gas analyzer is applied to flue gas monitoring, detected flue gas pushes analyser 3 by sampling pump 2 after the cooling of flue gas pretreatment unit 1, dehumidifying, the many-sided pre-service of dedusting, and analyser 3 adopts infrared ray gas analyzer.Flue gas enters from analyser 3 air intake opening, does not have strict requirement to the flow velocity of air inlet, and analyser 3 detects the concentration of each component in flue gas by the principle that non-dispersion infrared absorbs, finally emptying from gas outlet.
In this programme, analyser 3 is not strict with by sample gas velocity, as long as within the specific limits, but the SO of analyser 3
2minimum detectability is 2-3mg/m
3, this index can not meet SO
2the 35mg/m of emission limit
3measure requirement.
2. refer to Fig. 2, a kind of typical Ultraluminescence flue gas analyzer is applied to atmospheric surveillance.The feature of Ultraluminescence gas analyzer is higher to the traffic requirement of tested gas, the air chamber air intake of analyser 3 inside is provided with in " velocity of sound hole ", as long as the pressure of air intake keeps certain, plenum interior is greater than more than twice with the pressure reduction of outside (air chamber gas outlet), and the flow entering air chamber just keeps constant.The effect of the vacuum pump 2 that analyser 3 is equipped with is exactly be greater than twice in order to air chamber inside and outside pressure reduction, produces constant current effect.Analyser 3 air intake connects pretreatment unit 1 (air strainer).
Due to the effect of sampling pump 2 (analyser vacuum pump), the air chamber place of Ultraluminescence gas analyzer 3 is greater than twice negative pressure state, under the state of the standard atmospheric pressure that detected atmospheric air is stable from air intake opening with constant flow velocity suction analyser 3 air chamber, analyser 3 detects the concentration of each component in flue gas by Ultraluminescence principle, finally by by analyser 3 gas outlet, emptying through vacuum pump 2.The effect of pretreatment unit 1 (that is: air strainer) is the moisture in removing air.
In this programme, adopt the SO of ultraviolet fluorescence method
2analyser, the detection limit of the analyser 3 of the method is extremely low, meets detection requirement.But, flue gas is different from air, the feature of flue gas is containing dust, washiness, water-dust removing is carried out through pretreatment unit 1 after needs extract from flue or flue, because the pressure of sampling pump 2 gas outlet can with flue and pretreated operating mode, and the change of pump operation state, the pressure stability of ultraviolet fluorescence analysis instrument 3 air intake opening cannot be ensured, thus causing analyser 3 sample flow cannot be constant, the accuracy of analyser 3 can be greatly affected.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, and a kind of flue gas analysis device is provided, the problem and the humid air that efficiently solve the fluctuation of analyser flue gas flow enter the normal problem run of analyser impact, have the advantage that stability is strong, degree of accuracy is high.
The technical scheme realizing above-mentioned purpose is:
A kind of flue gas analysis device of the present utility model, comprise a gas exhaust piping and the flue gas pretreatment unit be connected successively, a sampling pump, a three-way connection, a ultraviolet gas analyzer and an analyser vacuum pump, the gas outlet of described sampling pump connects the first interface of described three-way connection, the air intake opening of described ultraviolet gas analyzer connects the second interface of described three-way connection, the air intake of described gas exhaust piping connects the 3rd interface of described three-way connection, and the air intake of described flue gas pretreatment unit connects outside flue.
Further improvement of the utility model is, the chamber inlet of described ultraviolet gas analyzer is provided with velocity of sound aperture.
Further improvement of the utility model is, described ultraviolet gas analyzer adopts ultraviolet fluorescence analysis instrument.
Further improvement of the utility model is, also comprises a pipeline switching device and an air inlet pipeline, and described air inlet pipeline, described gas exhaust piping are connected described pipeline switching device respectively with the 3rd interface of described three-way interface.
Further improvement of the utility model is, also comprises an air processor, and described air processor is arranged on described air inlet pipeline.
Further improvement of the utility model is, described pipeline switching device adopts three-way solenoid valve, and the 3rd interface of described three-way connection connects the first interface of described three-way solenoid valve, and the second interface of described three-way solenoid valve connects described gas exhaust piping; Described air inlet pipeline connects the 3rd interface of described three-way solenoid valve.
Further improvement of the utility model is, also comprises a control module, and described control module connects described three-way solenoid valve.
The utility model is owing to have employed above technical scheme, and making it have following beneficial effect is:
Flue gas pretreatment unit is used for carrying out cool-down dehumidification, dedusting to high-temperature flue gas, makes flue gas become dry dustless gas.Sampling pump is used for pretreated dustless gas to be delivered to ultraviolet gas analyzer.Ultraviolet gas analyzer is for analyzing SO in flue gas
2concentration, and the detection limit of ultraviolet gas analyzer is extremely low, can meet the 35mg/m of detection requirement
3limit value requirement.Gas exhaust piping is used for unnecessary fume emission to outdoor.Analyser vacuum pump, achieves the measurement air chamber that flue gas is pumped into ultraviolet gas analyzer.The cooperation of analyser vacuum pump and velocity of sound aperture, ensure that flue gas is pumped into the air chamber of ultraviolet gas analyzer with constant flow velocity.Air inlet pipeline is used for being that ultraviolet gas analyzer provides indoor comparatively dry air in daily servicing scale removal process, prevent by outdoor comparatively malaria be pumped in ultraviolet gas analyzer, ensure the normal operation of ultraviolet gas analyzer.Air processor is used for carrying out filtration when carrying out daily servicing to flue gas analysis device to the air being entered ultraviolet gas analyzer air chamber by air inlet pipeline and dewaters, ensure the good of the internal measurement environment of ultraviolet gas analyzer, thus ensure that it normally works and keep good degree of accuracy.Control module connecting tee solenoid valve, realizes controlling the switching of gas exhaust piping and air inlet pipeline.
Accompanying drawing explanation
Fig. 1 is the structural representation of one of existing flue gas analysis device;
Fig. 2 is the structural representation of existing flue gas analysis device two;
Fig. 3 is the structural representation of the flue gas analysis device of the utility model embodiment.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
Refer to Fig. 3, a kind of flue gas analysis device of the utility model embodiment, comprise a gas exhaust piping 8 and the flue gas pretreatment unit 1 be connected successively, one sampling pump 2, one three-way connection 4, one ultraviolet gas analyzer 3, one analyser vacuum pump 5, one pipeline switching device 6 and an air inlet pipeline 9, the first interface of the gas outlet connecting tee joint 4 of sampling pump 2, second interface of the air intake opening connecting tee joint 4 of ultraviolet gas analyzer 3, air inlet pipeline 9, the 3rd interface connecting tube switching device shifter 6 respectively of gas exhaust piping 8 and three-way interface, the air intake of flue gas pretreatment unit 1 connects outside flue.
Flue gas pretreatment unit 1, for carrying out cool-down dehumidification, dedusting to high-temperature flue gas, makes flue gas become dry dustless gas.Sampling pump 2 is for being delivered to ultraviolet gas analyzer 3 by pretreated dustless gas.Ultraviolet gas analyzer 3 is for analyzing SO in flue gas
2concentration, and the detection limit of ultraviolet gas analyzer 3 is extremely low, can meet the 35mg/m of detection requirement
3limit value requirement.Gas exhaust piping 8 is for extremely outdoor by unnecessary fume emission.Analyser vacuum pump 5, achieves the measurement air chamber that flue gas is pumped into ultraviolet gas analyzer 3.
Air inlet pipeline 9 for being that ultraviolet gas analyzer 3 provides indoor comparatively dry air in daily servicing scale removal process, prevent by outdoor comparatively malaria be pumped in ultraviolet gas analyzer 3, ensure the normal operation of ultraviolet gas analyzer 3.
The chamber inlet of ultraviolet gas analyzer 3 is provided with velocity of sound aperture.The cooperation of analyser vacuum pump 5 and velocity of sound aperture, ensure that flue gas is pumped into the air chamber of ultraviolet gas analyzer 3 with constant flow velocity.
Wherein, ultraviolet gas analyzer 3 adopts ultraviolet fluorescence analysis instrument.
Meanwhile, also comprise an air processor 7, air processor 7 is arranged on air inlet pipeline 9.
Air processor 7 is dewatered for carrying out filtration when carrying out daily servicing to flue gas analysis device to the air being entered ultraviolet gas analyzer 3 air chamber by air inlet pipeline 9, ensure the good of the internal measurement environment of ultraviolet gas analyzer 3, thus ensure that it normally works and keep good degree of accuracy.
Wherein, pipeline switching device 6 adopts three-way solenoid valve, the first interface of the 3rd interface connecting tee solenoid valve of three-way connection 4, and the second interface of three-way solenoid valve connects gas exhaust piping 8; 3rd interface of air inlet pipeline 9 connecting tee solenoid valve.
In the present embodiment, also comprise a control module, control module connecting tee solenoid valve.
Control module connecting tee solenoid valve, realizes controlling the switching of gas exhaust piping 8 and air inlet pipeline 9.
Principle of work of the present utility model is as follows:
By flue gas pretreatment unit 1, cool-down dehumidification, dedusting are carried out to high-temperature flue gas, flue gas is made to become dry dustless gas, and carried to ultraviolet gas analyzer 3 by sampling pump 2, if working off one's feeling vent one's spleen of sampling pump 2 is directly connected with ultraviolet gas analyzer 3, ultraviolet gas analyzer 3 inlet pressure can be made to fluctuate, cause ultraviolet gas analyzer 3 sample flow unstable.A three-way connection 4 and a three-way solenoid valve 6 is have employed in the utility model, when ultraviolet gas analyzer 3 is normally measured, the first interface of three-way solenoid valve and the second interface conducting of three-way solenoid valve, so, the gas circuit that sampling pump 2 exports and gas exhaust piping 8 are connected.Simultaneously, the gas flow that sampling pump 2 exports must be greater than the sampling flow of ultraviolet gas analyzer 3, the flue gas pressures this ensures that thering ultraviolet gas analyzer 3 import is stable standard atmospheric pressure, under the effect of analyser vacuum pump 5 and velocity of sound aperture, flue gas is pumped into the measurement air chamber of ultraviolet gas analyzer 3 with constant flow velocity, unnecessary flue gas is then discharged to outdoor by gas exhaust piping 8, this ensures that theres the accurate measurement of ultraviolet gas analyzer 3.
In addition in day-to-day operation is safeguarded, need to carry out blowback, dust out to sampling probe and pipeline, at this moment, sampling pump 2 must be out of service, but in order to ensure the stable of the inner each unit status of analyser, analyser vacuum pump 5 can not be out of service.If the at this moment first interface of three-way solenoid valve and the second interface conducting of three-way solenoid valve, outdoor malaria is drawn in ultraviolet gas analyzer 3, affect the normal operation of ultraviolet gas analyzer 3, therefore, at this moment the second interface of the first interface of three-way solenoid valve and three-way solenoid valve should be closed by three-way solenoid valve under the control of the control unit, by the 3rd interface conducting of the first interface of three-way solenoid valve and three-way solenoid valve, such room air enters ultraviolet gas analyzer 3 after air processor 7 dewaters, ensure the normal work of ultraviolet gas analyzer 3.
The utility model efficiently solves the problem of analyser flue gas flow fluctuation and humid air enters the normal problem run of analyser impact, has the advantage that stability is strong, degree of accuracy is high.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain of the present utility model.
Claims (7)
1. a flue gas analysis device, it is characterized in that, comprise a gas exhaust piping and the flue gas pretreatment unit be connected successively, a sampling pump, a three-way connection, a ultraviolet gas analyzer and an analyser vacuum pump, the gas outlet of described sampling pump connects the first interface of described three-way connection, the air intake opening of described ultraviolet gas analyzer connects the second interface of described three-way connection, the air intake of described gas exhaust piping connects the 3rd interface of described three-way connection, and the air intake of described flue gas pretreatment unit connects outside flue.
2. flue gas analysis device according to claim 1, is characterized in that, the chamber inlet of described ultraviolet gas analyzer is provided with velocity of sound aperture.
3. flue gas analysis device according to claim 2, is characterized in that, described ultraviolet gas analyzer adopts ultraviolet fluorescence analysis instrument.
4. the flue gas analysis device according to any one of claim 1-3, it is characterized in that, also comprise a pipeline switching device and an air inlet pipeline, described air inlet pipeline, described gas exhaust piping are connected described pipeline switching device respectively with the 3rd interface of described three-way interface.
5. flue gas analysis device according to claim 4, is characterized in that, also comprises an air processor, and described air processor is arranged on described air inlet pipeline.
6. flue gas analysis device according to claim 5, it is characterized in that, described pipeline switching device adopts three-way solenoid valve, and the 3rd interface of described three-way connection connects the first interface of described three-way solenoid valve, and the second interface of described three-way solenoid valve connects described gas exhaust piping; Described air inlet pipeline connects the 3rd interface of described three-way solenoid valve.
7. flue gas analysis device according to claim 6, is characterized in that, also comprises a control module, and described control module connects described three-way solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521083814.2U CN205229043U (en) | 2015-12-23 | 2015-12-23 | Flue gas analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521083814.2U CN205229043U (en) | 2015-12-23 | 2015-12-23 | Flue gas analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229043U true CN205229043U (en) | 2016-05-11 |
Family
ID=55904100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521083814.2U Expired - Fee Related CN205229043U (en) | 2015-12-23 | 2015-12-23 | Flue gas analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205229043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613958A (en) * | 2018-07-31 | 2018-10-02 | 扬中市南方矿用电器有限公司 | Determination of nitric oxide device and assay method |
| CN110220544A (en) * | 2019-06-28 | 2019-09-10 | 上海华川环保科技有限公司 | A kind of online hygrometer sampler |
| CN110320332A (en) * | 2019-08-07 | 2019-10-11 | 欧阳烽 | A kind of balanced type exhaust gas on-line detecting system |
-
2015
- 2015-12-23 CN CN201521083814.2U patent/CN205229043U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613958A (en) * | 2018-07-31 | 2018-10-02 | 扬中市南方矿用电器有限公司 | Determination of nitric oxide device and assay method |
| CN110220544A (en) * | 2019-06-28 | 2019-09-10 | 上海华川环保科技有限公司 | A kind of online hygrometer sampler |
| CN110320332A (en) * | 2019-08-07 | 2019-10-11 | 欧阳烽 | A kind of balanced type exhaust gas on-line detecting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20201223 |