CN208588714U - Evaluate the device of oxidation state mercury adsorbent material performance - Google Patents
Evaluate the device of oxidation state mercury adsorbent material performance Download PDFInfo
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- CN208588714U CN208588714U CN201721872575.8U CN201721872575U CN208588714U CN 208588714 U CN208588714 U CN 208588714U CN 201721872575 U CN201721872575 U CN 201721872575U CN 208588714 U CN208588714 U CN 208588714U
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Abstract
A kind of device for evaluating oxidation state mercury adsorbent material performance, comprising: Standard Gases generating unit generates the gas for being free of oxidation state mercury；Oxidation state mercury generating unit generates the gas of the mercury containing oxidation state；Hybrid analog-digital simulation unit mixes the gas that the Standard Gases generating unit and the oxidation state mercury generating unit generate and forms simulated flue gas；Absorbing unit accommodates adsorbent material to be evaluated；And detection unit, the adsorbance of adsorbent material is calculated by detecting the mercury content in the simulated flue gas that the hybrid analog-digital simulation unit generates and the mercury content in the gas after adsorbent material absorption.The device of the utility model can generate quantitative simulated flue gas, can guarantee the pure property of oxidation state mercury flue gas；The device can quantitative assessment adsorbent material to the adsorption effect of simulated flue gas and the regenerability of material, solve the problems such as field condition is complicated, sampling is difficult.
Description
Technical field
The utility model belongs to atmospheric environment and administers field, and in particular to carries out performance evaluation to oxidation state mercury adsorbent material
Device.
Background technique
Bivalent mercury (Hg2+) it is one of the toxic heavy metal ion for threatening human health.It can be enriched in human body, cause kidney
The diseases such as failure, blindness, the impaired, skin disease of nervous centralis.Meanwhile Hg2+Environment can be caused seriously to pollute, destroy the ecosystem
Balance.Reinforce to Hg2+Control to ensure that the safety of human food and drinking water seem of crucial importance.Senior is pointed out: coal combustion
In mercury emissions caused by burning process, Elemental Mercury accounts about 20-50%, and bivalent mercury accounts for about 50-80% (Senior C L.A
Fundamental Study of Mercury Partitioning in Coal-Fired Power Plant Flue Gas
[J].1997.).Prestbo et al. shows in the field experiment that 14 power stations carry out: Elemental Mercury and bivalent mercury are in coal fired power plant cigarette
Relative percentage in gas is respectively 6-60% and 40-94% (Prestbo E M, Bloom N S. Mercury
speciation adsorption(MESA)method for combustion flue gas: Methodology,
artifacts,intercomparison,and atmospheric implications[J].Water Air&Soil
Pollution,1995,80(1-4):145-158.).In general, supply chlorine content in coal is higher, then bivalent mercury is dense in flue gas
It spends higher.
Existing wet FGD systems take off mercury removal efficiency generally in 0-90%, average out to 45%.(pH 4.0 in some conditions
Left and right), the Hg that the limestone scrubber in FGD can will adsorb2+It restores as Hg0, Hg0 in discharge flue gas is improved instead
Concentration of emission.Therefore, using adsorbable Hg2+, and can be carried out multiple regenerated adsorbent material, it is to solve Hg in flue gas2+Compared with
Good method, and absorption property and regenerability are to measure material to Hg2+The important indicator of adsorption effect, therefore need one kind can be
Under the conditions of stablizing, being accurate, to material to Hg2+Adsorption capacity and the regenerability of material itself make the dress of accurate evaluation
It sets.
Currently without document report, continues, stablizes the simulated experiment for carrying out simulated flue gas in laboratory, also do not there is patent
To material to Hg2+Adsorption capacity evaluated.General all remove to the simulation in the matrix such as water body, desulfurization slurry carries out at present
It studies or is tested in coal-burning power plant with practical flue gas, with field condition complexity, sample the problems such as difficult.So
In laboratory, oxidation state flue gas adsorbent material is evaluated using stabilization, accurate method, can be avoided problems, it is right
The adsorption mechanism process that oxidation state mercury carries out on the adsorbent material also can be carried out accurate analysis.
Utility model content
The utility model provides a kind of device for evaluating oxidation state mercury adsorbent material performance, does not have in the prior art to fill up
The blank that oxidation state flue gas adsorbent material is evaluated.
A kind of device for evaluating oxidation state mercury adsorbent material performance, comprising: Standard Gases generating unit generates and is free of oxidation state
The gas of mercury；Oxidation state mercury generating unit generates the gas of the mercury containing oxidation state；Hybrid analog-digital simulation unit mixes the Standard Gases hair
The gas that raw unit and the oxidation state mercury generating unit generate forms simulated flue gas；Absorbing unit accommodates absorption to be evaluated
Material；And detection unit, by detecting mercury content and the absorption in the simulated flue gas that the hybrid analog-digital simulation unit generates
The mercury content in gas after material absorption calculates the adsorbance of adsorbent material.
An embodiment according to the present utility model, the multiple subelements of Standard Gases generating unit, each subelement produce
A kind of gas of raw component.
Another embodiment according to the present utility model, the oxidation state mercury generating unit includes vapourizing unit, and being used for will
Oxidation state mercury source solution boils.
Another embodiment according to the present utility model is connected between the vapourizing unit and the hybrid analog-digital simulation unit
Heat tracing pipeline.
Another embodiment according to the present utility model is connected between the hybrid analog-digital simulation unit and the absorbing unit
Heat tracing pipeline.
Another embodiment according to the present utility model, the absorbing unit include heating device.
Another embodiment according to the present utility model, the detection unit include absorbing the absorption of the mercury gas containing oxidation state
Bottle.
Another embodiment according to the present utility model, the absorption bottle include mercury fixer." mercury is fixed in this patent
Liquid " refer to mass percent be 5%~10% nitric acid solution and mass percent be 0.05%~1% potassium bichromate mixing it is molten
Liquid.
Compared with prior art, the device of the utility model can generate quantitative simulated flue gas, can guarantee oxidation state
The pure property of mercury flue gas；The device being capable of regeneration of the quantitative assessment adsorbent material to the adsorption effect and material of simulated flue gas
Performance solves the problems such as field condition is complicated, sampling is difficult.Further, due in the Standard Gases generating unit in the device points
It is not independent to generate various gases, therefore component in flue gas can be adjusted according to actual needs, it can investigate under each atmospheric condition to suction
The influence of attached effect.
Detailed description of the invention
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the utility model will
It becomes readily apparent from.
Fig. 1 is the schematic diagram of the device of the evaluation oxidation state mercury adsorbent material performance of the utility model.
Fig. 2 is absorption property evaluation figure of the ceramic nano material to oxidation state mercury for showing embodiment 1.
Wherein, the reference numerals are as follows:
1- main road, 10- Standard Gases generating unit, 11a, 11b, 11c, 11d, 21- filter 12a, 12b, 12c, 12d,
14a, 14b, 14c, 14d, 22,24,51- ball valve, 13a, 13b, 13c, 13d, 23- flow controller, 15a, 15b, 15c, 15d,
25- check valve, 2- bypass, 20- oxidation state mercury generating unit, 26- peristaltic pump, 27- fluid reservoir, 28- assay balance, 29- vaporization
Device, 210- heat tracing pipeline, 3- switching valve, 30- hybrid analog-digital simulation unit, 40- absorbing unit, 41- heat-absorbing material, 42- thermocouple,
50- detection unit, 52- exhaust outlet, the first thief hatch of 53-, the second thief hatch of 54-, 55- vent gas treatment bottle, 56,57- atmosphere are adopted
Sample device.
Specific embodiment
The exemplary embodiment for embodying the utility model features and advantages will describe in detail in the following description.It should be understood that
Be that the utility model can have various variations in different embodiments, all do not depart from the model of the utility model
It encloses, and the descriptions and illustrations are essentially for illustration purposes, rather than to limit the utility model.Except non-specifically limiting
Fixed, term used in the utility model is the normally understood meaning of those skilled in the art.
As shown in Figure 1, the device of evaluation oxidation state mercury adsorbent material performance includes Standard Gases generating unit 10, oxidation state mercury
Generating unit 20, hybrid analog-digital simulation unit 30, absorbing unit 40, detection unit 50.
For including 4 gas flow paths, every flow path circulates a kind of gas Fig. 1 Plays gas generating unit 10, can be with
According to the type of component in simulation gas, specific amount of flow path is set.Different compressed gas cylinders are connected with each flow path respectively, respectively
Class gas sequentially passes through filter 11a, 11b, 11c respectively, 11d, ball valve 12a, 12b, 12c, 12d, flow controller 13a,
13b, 13c, 13d, ball valve 14a, 14b, 14c, 14d and check valve 15a, 15b, 15c, 15d.Filter 11a, 11b, 11c, 11d
Filter out the solid impurity in all kinds of gases.Pass through ball valve 12a, 12b, 12c, 12d, flow controller 13a, 13b, 13c, 13d, ball
Valve 14a, 14b, 14c, 14d controls the flow of all kinds of gases, finally by check valve 15a, 15b, 15c, 15d inflow hybrid guided mode
In quasi-simple member 30.
Oxidation state mercury generating unit 20, including filter 21, ball valve 22, flow controller 23, ball valve 24 and check valve
25, peristaltic pump 26, fluid reservoir 27, assay balance 28, vapourizing unit 29.Carrier gas passes sequentially through filter 21, ball valve 22, flow control
Device 23, ball valve 24 and check valve 25 processed are flowed into vapourizing unit 29 by peristaltic pump 26, carry the oxidation state mercury gas of vaporization into
Enter in hybrid analog-digital simulation unit 30.Carrier gas can be nitrogen or inert gas.Peristaltic pump 26 quantitatively extracts the oxygen on assay balance 28
Change in state mercury source solution injection vapourizing unit 28.Oxidation state mercury source solution, can using commercially available mercury standard solution (0.1mL~
The excellent pure grade nitric acid solution progress different proportion for being 1mL) 5%~10% with mass percentage is mixed to get.By oxidation state mercury
Source solution is placed in fluid reservoir 27, and is placed in assay balance 28, and the extraction of source solution is carried out by peristaltic pump 26.Using point
Analysis balance 28 can accurately measure the quality of extraction source solution, and inject in vapourizing unit 29, and 29 temperature of vapourizing unit is 190 DEG C~
250 DEG C, oxidation state mercury is passed through in hybrid analog-digital simulation unit 30 after being passed through carrier gas, the gas generated with Standard Gases generating unit 10 is equal
It is even to be mixed to form simulated flue gas.Heat tracing pipeline 210 can also be set outside the pipeline for the gas that vapourizing unit 28 flows out, to guarantee vapour
The gas that 28 outflows simulation is set in makeup will not condense.Heat tracing temperature can be 100 DEG C~150 DEG C.
The simulated flue gas flowed out from hybrid analog-digital simulation unit 30 can flow into main road 1 by switching valve 3, and it is single then to flow into absorption
Member 40.Switching valve 3 also can control simulated flue gas and flow into bypass 2, into detection unit 50.From hybrid analog-digital simulation unit 30 to cutting
It changes and heat tracing pipeline 210 also can be set between valve 3, to prevent the gas condensation of simulation.
Quantitative adsorbent material 41 is placed in absorbing unit 40, adsorbent material 41 can be powdered, blocky, graininess.
Absorbing unit 40 further includes heating device, keeps the temperature of absorbing unit 40 to be in the temperature of adsorbent material working environment, makes vapour
Oxidation state mercury holding gaseous state after change, generally 150 DEG C~250 DEG C, such as can be 180 DEG C or so.Monitoring heat can be passed through
4 internal temperature of absorbing unit that galvanic couple 42 is shown, to adjust heating device to keep 40 internal temperature of absorbing unit in above-mentioned model
It encloses.
Detection unit 50 includes ball valve 51, exhaust outlet 52, the first thief hatch 53, the second thief hatch 54, vent gas treatment bottle 55
With air sampler 56,57.The simulated flue gas flowed out from hybrid analog-digital simulation unit 30 is switched to bypass 2 by switching valve 3, makes to simulate
Flue gas does not pass through adsorbent material 41, air sampler 56 is connected at the first thief hatch 53, and by fume collection to sampler 56
Absorption bottle in, in absorption bottle be equipped with+0.05%~1% potassium bichromate solution of 5%~10% nitric acid solution, pass through mercury vapourmeter pair
Absorbing liquid carries out the measurement of total mercury content, as the oxidation state mercury concentration 1 before absorption.The simulation flowed out from hybrid analog-digital simulation unit 30
Flue gas is switched to main road 1 by switching valve 3, makes simulated flue gas by adsorbent material 41, and connects greatly at the second thief hatch 54
Gas sampling 57, and by the absorption bottle of fume collection to sampler 57, mercury fixer (i.e. 5%~10% is housed in absorption bottle
Nitric acid solution+0.05%~1% potassium bichromate solution), the measurement of total mercury content is carried out to absorbing liquid by mercury vapourmeter, as suction
Attached oxidation state mercury concentration 2.It carries out concentration 1 and concentration 2 can be calculated absorption of the adsorbent material 41 to oxidation state mercury flue gas
Rate.It is parallel at thief hatch 53,54 and is provided with exhaust outlet 52, the external tail gas equipped with potassium permanganate sulfuric acid solution of exhaust outlet 52 is inhaled
Receive the tail gas that bottle 55 is used to handle through ball valve 51 and bypasses 2 outflows.
After 41 adsorption saturation of material to be adsorbed, in-situ regeneration can be carried out.Inert gas (figure is passed through at 500 DEG C~600 DEG C
In be not shown), carry out the desorption of oxidation state mercury, the reality of the absorption to oxidation state mercury can be carried out again after regeneration ending by the device
It tests, and material can be obtained to the absorption property and material regeneration performance of oxidation state mercury by the way that above step is repeated several times.
Embodiment 1
Pass through the Standard Gases generating unit 10 of utility model device, oxidation state mercury generating unit 20 and hybrid analog-digital simulation unit
30, it is 100 μ g/m that simulation, which produces simulation oxidation state mercury concentration,3Flue gas, with oxidation state mercury in the practical flue gas in coal-burning power plant
Actual concentrations are close, and without many impurity and other pollutants such as particle mercury, flying dust, dioxin, Elemental Mercuries.Adsorption material
Material 41 is ceramic nano unimolecule porous material.Quantitative ceramic nano mixture is taken in the quartz ampoule of absorbing unit 40,
A small amount of silica wool is filled at both ends, keeps adsorption temp constant, and with the flow velocity of 2L/min by simulated flue gas, flue gas is in absorbing unit
In 40 after residence time 0.1875s, after absorbing unit 40, connect air sampler and absorption bottle (5% nitric acid solution+
0.05% potassium bichromate solution), total mercury content therein is obtained via Lumex RA-915M mercury analyzer.As shown in Fig. 2,
The ceramic nano material is to Hg2+Adsorption efficiency it is higher, ceramic nano material is obtained by calculation and exists to valence state mercury adsorbance
4818μg(Hg2+When)/g (ceramic nano material), adsorption efficiency is still 75.70%.By ceramic nano material temperature be 600 DEG C
Lower regeneration two hours, then to its Hg2+Adsorption effect is made an appraisal, the results show that the material is still to Hg after regeneration 3 times2+Have
Higher adsorption efficiency, and the environment-friendly function quality of materials loss late after regeneration is less than 0.5%.Therefore, it can be seen that the material
To Hg2+、Hg+And the mercury compound of molecular state has extremely strong suction-operated, and iterative regenerable.
The evaluating apparatus of the utility model solves field condition complexity, is difficult to make material absorption, regenerability etc.
The problems such as evaluation, is convenient for more accurately evaluating material absorption property.
Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence
In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these according to the utility model
Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.
Claims (8)
1. a kind of device for evaluating oxidation state mercury adsorbent material performance characterized by comprising
Standard Gases generating unit generates the gas for being free of oxidation state mercury；
Oxidation state mercury generating unit generates the gas of the mercury containing oxidation state；
Hybrid analog-digital simulation unit mixes the gas that the Standard Gases generating unit and the oxidation state mercury generating unit generate and forms mould
Quasi- flue gas；
Absorbing unit accommodates adsorbent material to be evaluated；
Detection unit, including ball valve, exhaust outlet, the first thief hatch, the second thief hatch, vent gas treatment bottle and air sampler, institute
It states the first thief hatch and second thief hatch is separately connected air sampler；
Switching valve, input terminal are connect with the hybrid analog-digital simulation unit, and output end is separately connected the absorbing unit and described
Detection unit.
2. the device of evaluation oxidation state mercury adsorbent material performance according to claim 1, which is characterized in that the Standard Gases
The multiple subelements of generating unit, each subelement generate a kind of gas of component.
3. the device of evaluation oxidation state mercury adsorbent material performance according to claim 1, which is characterized in that the oxidation state
Mercury generating unit includes vapourizing unit, is used for oxidation state mercury source solution boils.
4. the device of evaluation oxidation state mercury adsorbent material performance according to claim 3, which is characterized in that the vaporization dress
It sets and is connected with heat tracing pipeline between the hybrid analog-digital simulation unit.
5. the device of evaluation oxidation state mercury adsorbent material performance according to claim 1, which is characterized in that the hybrid guided mode
Heat tracing pipeline is connected between quasi-simple member and the absorbing unit.
6. the device of evaluation oxidation state mercury adsorbent material performance according to claim 1, which is characterized in that the absorption is single
Member includes heating device.
7. the device of evaluation oxidation state mercury adsorbent material performance according to claim 1, which is characterized in that the detection is single
Member includes the absorption bottle for absorbing the mercury gas containing oxidation state.
8. the device of evaluation oxidation state mercury adsorbent material performance according to claim 7, which is characterized in that the absorption bottle
Including mercury fixer.
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| CN108107161A (en) * | 2017-12-27 | 2018-06-01 | 中国科学院北京综合研究中心 | Evaluate the device of oxidation state mercury sorbing material performance |
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| CN108107161A (en) * | 2017-12-27 | 2018-06-01 | 中国科学院北京综合研究中心 | Evaluate the device of oxidation state mercury sorbing material performance |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220713 Address after: 101400 No.1, yanqihu East Road, Huairou District, Beijing Patentee after: University OF CHINESE ACADEMY OF SCIENCES Patentee after: ZHONGKE JINGTOU ENVIRONMENTAL SCIENCE AND TECHNOLOGY JIANGSU CO.,LTD. Address before: 101407 No. 26, Yanqi South 4th Street, Huairou District, Beijing Patentee before: BEIJING ADVANCED SCIENCES AND INNOVATION CENTER OF CAS Patentee before: ZHONGKE JINGTOU ENVIRONMENTAL SCIENCE AND TECHNOLOGY JIANGSU CO.,LTD. |
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