CN208283137U - Mercury sampling apparatus in a kind of coal steam-electric plant smoke - Google Patents
Mercury sampling apparatus in a kind of coal steam-electric plant smoke Download PDFInfo
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- CN208283137U CN208283137U CN201820215952.9U CN201820215952U CN208283137U CN 208283137 U CN208283137 U CN 208283137U CN 201820215952 U CN201820215952 U CN 201820215952U CN 208283137 U CN208283137 U CN 208283137U
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- Prior art keywords
- mercury
- flue gas
- sampling
- absorption bottle
- filter cylinder
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Abstract
The utility model discloses mercury sampling apparatus in a kind of coal steam-electric plant smoke, which includes: sampling pipe, for sampling to flue gas；Filter cylinder captures particle mercury therein for receiving the flue gas of sampling pipe acquisition；Absorption bottle group acquires the mercury of other forms for receiving to the flue gas through cartridge filter.It, can be to the complete analysis of mercury in flue gas various forms using the scheme of utility model.Scientific research, which can be used, can be used for daily monitoring.A kind of efficiently feasible method of sampling is provided for coal-burning boiler and thermal power plant.
Description
Technical field
The utility model relates to environment protection fields, and in particular to mercury sampling apparatus in a kind of coal steam-electric plant smoke is used for thermoelectricity
The sampling of factory's mercury in flue gas can accurately acquire particle mercury, oxidation state mercury, element mercury in flue gas simultaneously.
Background technique
Coal-burning power plant of China mercury emission accounts for the 33.6% of Mercury In The Air total emission volumn, occupies first of every profession and trade, it has also become after
The fourth-largest pollutant after dust, SO2, NOX.In order to effectively control the discharge of coal-fired flue-gas mercury, " thermal power plant's atmosphere pollution row
Put standard " (GB13223-2011) clear stipulaties discharge index of coal-fired plant flue gas mercury and mercuric compounds for the first time.From 2015
From on January 1, in, to existing and newly-built thermal power generation coal-burning boiler, mercury and mercuric compounds require to execute the dirt of 0.03mg/m3
Contaminate object emission limit.
For other pollutants, there are following difficult points for the measurement in coal-fired flue-gas, firstly, mercury exists in flue gas
Complex shape, be divided into 3 kinds of element mercury (Hg0), oxidation state mercury (Hg2+) and particle mercury (Hgp) forms, and 3 kinds of forms
There is also mutually convert between mercury.Secondly, detection limit is low, the concentration of emission of mercury in flue gas is four or five generally lower than SO2, NOX etc.
The order of magnitude reaches 10-9 grades.
Coal-fired Power Plant in China mercury emissions measuring technique method is summarized as two major classes at present: one kind is on-line analysis method,
Another kind of is sampling analysis method.Sampling and analyzing method is divided into liquid absorption sampling analysis method and dry absorbent sampling analysis method again.
Liquid absorption sampling method mainly has: Ontario method, U.S. EPA-Method30B method, 13211 method of Britain BS EN etc..
Ontario method has been used as standard method to use, and sensitivity is higher, and can accurately obtain gaseous state list in flue gas simultaneously
Matter mercury, gaseous state bivalent mercury, the content of particle mercury, for checking on-line sampling analysis system.Mercury test based on Ontario method
Instrument is the ESC A-2000 Full-automatic tobacco bicycle pump sampling system of U.S.'s thermoelectricity, expensive, and only large-scale scientific research institutions adopt at present
Purchase.Daily mercury monitoring is not applicable, is mainly used for scientific research field.
U.S. EPA-method30B method is activated carbon adsorption tube method, is able to carry out in flue gas and discharges total mercury, is i.e. (Hg0+Hg2
+).It can not HgP test.
13211 method of Britain BS EN is not applied in China.
Utility model content
(1) technical problems to be solved
In order to overcome the drawbacks described above of the prior art, the utility model proposes mercury sampling cartridges in a kind of coal steam-electric plant smoke
It sets, can accurately acquire particle mercury, oxidation state mercury, element mercury in flue gas simultaneously.
(2) technical solution
According to the utility model proposes coal steam-electric plant smoke in mercury sampling apparatus, which includes: sampling pipe, for cigarette
Gas is sampled；Filter cylinder captures particle mercury therein for receiving the flue gas of sampling pipe acquisition；Absorption bottle group, for warp
The flue gas of cartridge filter is received, and the mercury of other forms is acquired.
Preferably, absorption bottle group further comprises: KCl solution absorption bottle, HNO3-H2O2 solution absorption bottle, KMnO4-
H2SO4 solution absorption bottle, absorbed on silica gel bottle 15.
Preferably, the absorption bottle group is arranged in ice bath case, maintains the temperature at zero degrees celsius or less.
Preferably, the filter cylinder includes the absorption bottle equipped with absorbing liquid, for inhaling to Elemental Mercury, bivalent mercury in flue gas
It receives.
Preferably, the filter cylinder further comprises drier, for being dried to by the flue gas of absorption bottle.
Preferably, which further comprises sensor, for detecting smoke behavior.
Preferably, which further comprises microprocessing systems, for receiving the information of the sensor transmission, and to institute
Information is stated to be handled.
Preferably, which further comprises: aspiration pump, for extracting the flue gas of certain volume；Flow regulator is used
In adjusting the power output of aspiration pump according to microprocessing systems calculated result, to adjust sucking rate, isokinetic sampling is realized.
Preferably, which further comprises: Pitot tube, and for measuring quiet, dynamic pressure in flue gas, one end is connected in flue
Flue gas, the other end connect microprocessing systems, and microprocessing systems carry out flue gas flow rate calculating according to the information that Pitot tube measures.
Preferably, which further comprises: thermocouple, for measuring flue-gas temperature, one end in contact flue gas in flue
By the laggard trip temperature measurement of temperature sensor, the other end connects microprocessing systems, and microprocessing systems utilize thermocouple measurement
Information carries out sampling volume calculating.
(3) beneficial effect
It, can be to the complete analysis of mercury in flue gas various forms using the scheme of utility model.Scientific research can be used can also
To be used for daily monitoring.A kind of efficiently feasible method of sampling is provided for coal-burning boiler and thermal power plant.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and be used to explain the principles of the present invention together with specification.
Fig. 1 show according to the utility model proposes mercury sampling apparatus schematic diagram.
Fig. 2 shows according to the utility model proposes mercury sampling apparatus in ice bath case structure chart.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is further described.
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent device and method of some aspects be described in detail in the appended claims, the utility model.
The utility model proposes a kind of mercury sampling apparatuses, are mainly used for the sampling of mercury in coal-burning boiler or coal steam-electric plant smoke.
The device can acquire particle mercury, divalent state mercury and elemental mercury simultaneously.Fig. 1 shows the schematic diagram of the device, the device packet
It includes: thermocouple 1, Pitot tube 2, sampling 3, absorption bottle, drier 4, micro-pressure sensor 5, pressure sensor 6, temperature sensor 7,
Flow sensor 8, flow regulator 9, aspiration pump 10, microprocessing systems 11.
Thermocouple 1 passes through the laggard trip temperature of temperature sensor for measuring flue-gas temperature, one end in contact flue gas in flue
Measurement, the other end connect microprocessing systems and carry out sampling volume calculating.Pitot tube 2 is for measuring quiet, dynamic pressure, one end in flue gas
Flue gas in flue is connected, the other end connects microprocessing systems and carries out flue gas flow rate calculating.Sampling pipe 3 is for adopting flue gas
Sample, sampling pipe 3 lead to filter cylinder, for carrying out particle mercury trapping.Filter cylinder includes absorption bottle 4a and drier 4b, in absorption bottle 4a
It is fitted into absorbing liquid to absorb Elemental Mercury, bivalent mercury in flue gas, i.e. capture particle mercury.It is absorbed the filtered cigarette of bottle 4a
Gas enters ice bath case 16 after pipeline enters drier 4b drying, then through pipeline.
Micro-pressure sensor 5, pressure sensor 6, temperature sensor 7, flow sensor 8, the pressure that will test, temperature,
Flow is converted to electric signal or other forms output.Flow regulator 9 adjusts pumping according to microprocessing systems calculated result
The power output of pump, to adjust sucking rate.Aspiration pump 10, for extracting the flue gas of certain volume, trapping absorbs mercury in flue gas.It is micro-
Processing system 11 calculates sampling exhaust gas volumn according to the data that each sensor provides, and realizes isokinetic sampling.
Absorption bottle group is disposed in ice bath case 16, Fig. 2 show structure chart.
Referring to Fig. 2, which includes ice bath case 16, and KCl solution absorption bottle 12, HNO is provided in ice bath case 163-H2O2It is molten
Liquid absorption bottle 13, KMnO4-H2SO4Solution absorption bottle 14, absorbed on silica gel bottle 15.Ice bath case 16 controls absorption bottle group Celsius zero
Degree is hereinafter, be conducive to the absorption of mercury in flue gas.KCl solution absorption bottle 12 is for absorbing divalent state mercury (Hg2+)。HNO3-H2O2Solution
Absorption bottle 13, KMnO4-H2SO4Solution absorption bottle 14 is for absorbing elemental mercury (Hg0).Absorbed on silica gel bottle 15 is for absorbing cigarette
Moisture in gas.
Mercury sampling apparatus using the application is carrying out live mercury in flue gas sampling process are as follows: first by sampling pipe 3 by adopting
Sample hole is put into flue, sampling mouth is placed on measuring point, face airflow direction, extracts a certain amount of cigarette by isokinetic sampling's requirement
Gas.Particle mercury is trapped by filter cylinder 3 in Fig. 1, and Elemental Mercury and divalent state mercury are absorbed by absorbing liquid in Fig. 2 absorption bottle group.Sampling knot
Beam send lab analysis, according to gas volume and various state mercury contents is extracted, calculates particle mercury, Elemental Mercury, divalent mercury emissions
Concentration and total emission volumn.
The advantages of device is can to acquire particle mercury in flue gas, divalent state mercury and Elemental Mercury simultaneously, each shape in flue gas
State mercury is captured or absorbs completely.Current country's mercury in flue gas is measured as mercury and mercuric compounds establishing criteria and fixes for HJ543
The measurement cold atomic absorbent spectrophotometry of waste gas of pollutant mercury.Total mercury in flue gas (i.e. mercury and mercuric compounds) can only be tested.
The above-mentioned sampling apparatus for mercury in flue gas is built, and standard GB/T/T16157 " Concentration in Fixed Pollutants Source is met
Middle particulate matter and the gaseous pollutant method of sampling " measurement requirement about pollutant in exhaust.Sample position is selected in boiler tail
Representational section is obtained in portion's horizontal flue, sample mode is isokinetic sampling, i.e., the speed that gas enters sampling mouth should be with
The velocity of flue gas of sampled point is equal.By sampling opium pipe on Pitot tube and Hygrothermograph through sensor by the pressure monitored,
The parameters such as temperature and humidity, calculate flue gas flow rate by microprocessor control system, track flow according to constant speed, control aspiration pump
Exhaust capacity, thus realize actual flow with calculate sampling flow it is equal.
Preparation before sampling: glass fiber filter cylinder is dried under lab and is weighed into constant weight.Prepare absorbing liquid
1mol/LKCl, 5%v/v HNO3- 10%v/vH2O2, 4%w/v KMnO4- 10%v/vH2SO4。
Spot sampling work: determining the number and location of sampled point according to flue size, and first predicted velocity is selected suitable
Mouth is sampled, flue-gas temperature and moisture content are measured, filter cylinder (device of particle mercury in filtering or retention flue gas) is packed into and is adopted
In sample rifle, absorbing liquid is packed into absorption bottle group, preheats sampling gun and pipeline, and after checking air-tightness, sampling gun and sample lines are kept
It 120~150 DEG C, is sampled using isokinetic sampling's device, the sampling time is set as 5min, and flue gas enters 8 leachings after filtering
Drexel bottle in ice bath pot is collected；The moisture in flue gas is finally absorbed by the absorption bottle for filling silica gel.After sampling, tweezers
Filter cylinder is put into glass dish and is saved, the transfer, resolution and measurement of absorbing liquid are carried out.And record sampling exhaust gas volumn, sampling time
And the parameters such as boiler load.
Filter cylinder is put into the counteracting tank for filling HF and chloroazotic acid by laboratory to be cleared up.All recovered liquids and digestion solution are adopted
It is measured with SYG-1 type Cold Atomic Fluorescent Mercury spectrometer (CVAFS) and calculates various forms mercury content in flue gas.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, are not limited to this reality
With novel, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all include
It is within the protection scope of the utility model.
Claims (7)
1. mercury sampling apparatus in a kind of coal steam-electric plant smoke, the device include:
Sampling pipe, for being sampled to flue gas；
Filter cylinder captures particle mercury therein for receiving the flue gas of sampling pipe acquisition；
Absorption bottle group acquires the mercury of other forms for receiving to the flue gas through cartridge filter.
2. the apparatus according to claim 1, which is characterized in that absorption bottle group further comprises: KCl solution absorption bottle,
HNO3-H2O2 solution absorption bottle, KMnO4-H2SO4 solution absorption bottle, absorbed on silica gel bottle.
3. the apparatus of claim 2, which is characterized in that the absorption bottle group is arranged in ice bath case, keeps temperature
Below zero degrees celsius.
4. the apparatus according to claim 1, which is characterized in that the filter cylinder includes the absorption bottle equipped with absorbing liquid, is used for
Elemental Mercury, bivalent mercury in flue gas are absorbed.
5. device according to claim 4, which is characterized in that the filter cylinder further comprises drier, for process
The flue gas of absorption bottle is dried.
6. device according to claim 1-5, which is characterized in that the device further comprises sensor, is used for
Detect smoke behavior.
7. device according to claim 6, which is characterized in that the device further comprises microprocessing systems, for receiving
The information of the sensor transmission, and the information is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820215952.9U CN208283137U (en) | 2018-02-07 | 2018-02-07 | Mercury sampling apparatus in a kind of coal steam-electric plant smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820215952.9U CN208283137U (en) | 2018-02-07 | 2018-02-07 | Mercury sampling apparatus in a kind of coal steam-electric plant smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208283137U true CN208283137U (en) | 2018-12-25 |
Family
ID=64747469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820215952.9U Expired - Fee Related CN208283137U (en) | 2018-02-07 | 2018-02-07 | Mercury sampling apparatus in a kind of coal steam-electric plant smoke |
Country Status (1)
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| CN (1) | CN208283137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088711A (en) * | 2018-02-07 | 2018-05-29 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Mercury sampling apparatus in a kind of coal steam-electric plant smoke |
| CN111426526A (en) * | 2020-04-16 | 2020-07-17 | 南京理工大学 | Device and method for simultaneously sampling multiple-valence mercury in coal-fired flue gas |
-
2018
- 2018-02-07 CN CN201820215952.9U patent/CN208283137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088711A (en) * | 2018-02-07 | 2018-05-29 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Mercury sampling apparatus in a kind of coal steam-electric plant smoke |
| CN111426526A (en) * | 2020-04-16 | 2020-07-17 | 南京理工大学 | Device and method for simultaneously sampling multiple-valence mercury in coal-fired flue gas |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181225 Termination date: 20200207 |