CN103293326A - A mercury-containing fumes emission continuous monitoring system and a monitoring method thereof - Google Patents
A mercury-containing fumes emission continuous monitoring system and a monitoring method thereof Download PDFInfo
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- CN103293326A CN103293326A CN2013100947647A CN201310094764A CN103293326A CN 103293326 A CN103293326 A CN 103293326A CN 2013100947647 A CN2013100947647 A CN 2013100947647A CN 201310094764 A CN201310094764 A CN 201310094764A CN 103293326 A CN103293326 A CN 103293326A
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 169
- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003517 fume Substances 0.000 title abstract 5
- 239000007789 gas Substances 0.000 claims abstract description 106
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000005259 measurement Methods 0.000 claims abstract description 55
- 238000005070 sampling Methods 0.000 claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 81
- 239000003546 flue gas Substances 0.000 claims description 58
- 239000007788 liquid Substances 0.000 claims description 55
- 239000002699 waste material Substances 0.000 claims description 48
- 239000000523 sample Substances 0.000 claims description 31
- 239000000779 smoke Substances 0.000 claims description 28
- 239000003463 adsorbent Substances 0.000 claims description 15
- 230000002829 reductive effect Effects 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 10
- 230000008676 import Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- JJWSNOOGIUMOEE-UHFFFAOYSA-N Monomethylmercury Chemical compound [Hg]C JJWSNOOGIUMOEE-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Abstract
The invention relates to a mercury-containing fumes emission continuous monitoring system and a monitoring method thereof. The monitoring system comprises a sampling device, a reactor, a gas and water separating device, and a mercury concentration measuring device which are sequentially connected through a pipeline; the reactor is connected with a first container containing a divalent mercury adsorption solution through a first peristaltic pump, and is also connected with a second container containing a divalent mercury reduction solution through a second peristaltic pump; and the sampling device, the first peristaltic pump, the second peristaltic pump and the mercury measuring device are separately electrically connected with a control circuit. The monitoring method comprises: firstly, the divalent mercury adsorption solution is pumped into the reactor to adsorb the divalent mercury in the fumes, and the mercury concentration measuring device is used to measure the concentration of zero valent mercury in the fumes; secondly, the divalent mercury reduction solution is pumped into the reactor to reduce the divalent mercury to be zero valent mercury, and the concentration obtained by the mercury measuring device at the same time is the concentration of the mercury in the fumes. The monitoring system of the invention is simple in structure, can prevent environment pollution, is highly reliable, achieves on-line automatic continuous monitoring, and improves operation efficiency and measurement accuracy.
Description
Technical field
The present invention relates to a kind of measuring system to mercury content in the flue gas, the flue gas form mercury emissions continuous monitor system and the monitoring method thereof that relate in particular to a kind of convenient test, reliability is high and tests environmental protection.
Background technology
Mercury, especially methyl mercury have great toxicity, can cause great harm to humans and animals, can cause irreversible infringement to nervous system.The residence time of nonvalent mercury in atmosphere reaches 0.5～2 year, can also move in the atmosphere medium and long distance, thereby cause global mercury pollution.
Coal is the main energy sources of China, and coal-fired yearly consumption is huge.The form of mercury is mainly discharged with the form of gas phase divalence mercury and gas phase nonvalent mercury in the flue gas of discharging behind the coal burning.The mercury of each form has its unique physicochemical property, and therefore, their discharging, propagation, deposition characteristics and method for catching are different.The concentration of mercury can be understood enterprise's coal-fired flue-gas mercury emissions situation at any time in the test flue gas, provide reliable data for exploring coal-fired flue-gas mercury control technology and formulating the discharging of regulation limitations mercury pollution, thereby reduce the influence that mercury pollution causes human health and ball ecological environment.
Mercury concentration in the test coal-fired flue-gas, the external classical way that adopts is Ontario method, Ontario method flue gas mercury test macro is mainly by the stopple coupon that links to each other successively, smoke filter and eight absorption bottles constitute, eight absorption bottles place ice bath, wherein in three absorption bottles in front Klorvess Liquid is housed, be used for absorbing divalence mercury, in the 4th absorption bottle nitric acid and hydrogen peroxide are housed, be used for absorbing nonvalent mercury, the 5th, in the 6th and the 7th absorption bottle potassium permanganate sulfuric acid solution is housed all, also be used for absorbing nonvalent mercury, in last absorption bottle discolour silica gel be housed, be used for absorbing the water vapour of flue gas.Sampling also will be cleared up the absorption liquid sample in each absorption bottle after finishing, and the hydrochloric acid solution with stannous chloride reduces then, distinguishes the mercury concentration in the working sample at last.Therefore, this method of testing has the following disadvantages: eight absorption bottles need consume a large amount of chemical reagent, and cost is higher; Use the chemical reagent of poisonous, harmful, severe corrosive in a large number, contaminated environment; Faults such as leakage easily take place in the system architecture complexity, and reliability is low; The sample collection capacity is more, bigger, and test process can only manual operations, can not on-line automaticization continuous monitoring, and work efficiency is lower, also influences measuring accuracy.
Summary of the invention
The technical matters that the present invention mainly solves original flue gas mercury emissions concentration measurement system complex structure, easily leaks, reliability is low; A kind of flue gas form mercury emissions continuous monitor system is provided, and it is simple in structure, and difficult the leakage improved the reliability of monitoring.
The present invention solves original flue gas mercury emissions concentration measuring method simultaneously need gather a large amount of samples, and test process can only manual operations, can not on-line automaticization continuous monitoring, and inefficiency also influences the technical matters of measuring accuracy; A kind of flue gas form mercury emissions continuous monitor system and monitoring method thereof are provided, and its sample collection capacity is few, gathers and the test process full automation, realizes the continuous monitoring of on-line automaticization of flue gas mercury emissions concentration, and high efficiency also improves measuring accuracy.
The present invention solves original flue gas mercury emissions concentration measuring method again need consume the chemical reagent of poisonous, harmful, severe corrosive, both contaminated environment, cost technical problems of high again in a large number; A kind of flue gas form mercury emissions continuous monitor system and monitoring method thereof are provided, and it needs to use a small amount of chemical reagent, and used chemical reagent is nontoxic, harmless, does not both pollute the environment, and reduces cost again.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: flue gas form mercury emissions continuous monitor system of the present invention, comprise sampler, reactor, gas and water separator, the mercury measurement device, first container, second container and control circuit, sampler links to each other with reactor by pipeline, reactor links to each other with gas and water separator by pipeline again, gas and water separator links to each other with the mercury measurement device by pipeline again, first container links to each other with described reactor through first peristaltic pump, second container links to each other with described reactor through second peristaltic pump, divalence mercury adsorbent solution is housed in first container, divalence mercury reducing solution is housed, described sampler in second container, first peristaltic pump, second peristaltic pump and mercury measurement device are electrically connected with described control circuit respectively.Gas and water separator is an airtight container.During monitoring, by first peristaltic pump divalence mercury adsorbent solution in first container is extracted in the reactor, sampler is gathered flue gas from tested flue, the flue gas that collects enters reactor, divalence mercury adsorbent solution in the reactor absorbs the divalence mercury in the flue gas, do not had mercuric flue gas to enter gas and water separator more then, entered the mercury measurement device again after removing water vapour, measured the concentration of nonvalent mercury in the flue gas by the mercury measurement device.Then by second peristaltic pump divalence mercury reducing solution in second container is extracted in the reactor, the divalence mercury of staying in the reactor is reduced to nonvalent mercury, the gas that has nonvalent mercury enters gas and water separator again, enter the mercury measurement device again after removing water vapour, measure the concentration of nonvalent mercury in this gas by the mercury measurement device, this concentration is mercuric concentration in the former flue gas.Like this, nonvalent mercury and the mercuric concentration in the discharged flue gas has all obtained monitoring in the tested flue.Because the mercury measurement device can only be measured nonvalent mercury, so the divalence mercury in the flue gas must be reduced into nonvalent mercury, could measure.This monitoring system is only used a reactor and a gas and water separator, and is simple in structure, reduced to leak the possibility that takes place, and improves reliability, low cost of manufacture, and operating cost is lower.Sampler, first peristaltic pump, second peristaltic pump and mercury measurement device be the automatic control of controlled circuit all, when start, when stop, finished work schedule in the control circuit, therefore whole test process need not be hand-manipulated, automatically finished by system entirely, be implemented in the line automation continuous monitoring, and to smoke sampling once, only need before and after the mercury measurement device two samples are measured, just can measure the concentration of form mercury in the flue gas, increase work efficiency greatly, also improve measuring accuracy.
As preferably, described flue gas form mercury emissions continuous monitor system comprises a refrigerating plant, and described reactor and gas and water separator are arranged in the refrigerating plant.Refrigerating plant generally adopts semiconductor cooling device, also can adopt other refrigeration plants certainly, as also reactor and gas and water separator being positioned in the ice bath.Stablize the chemical property of chemical reagent in flue gas and the reactor, be conducive to gas and water separator and remove water vapour in the flue gas, make the measurement data of mercury measurement device more reliable, more accurate.
As preferably, the divalence mercury adsorbent solution that is contained in described first container is Klorvess Liquid, is contained in the composite reduction solution of divalence mercury reducing solution for being made up of PH correctives and reductive agent in described second container.The technical program is only used two kinds of chemical reagent, and the use amount that significantly reduces chemical reagent is few, reduce cost, and used chemical reagent is nontoxic, harmless, does not also have severe corrosive, therefore, does not pollute the environment the test process environmental protection.
As preferably, described flue gas form mercury emissions continuous monitor system comprises waste liquid barrel, the 3rd peristaltic pump and the 4th peristaltic pump, described reactor links to each other with waste liquid barrel through the 3rd peristaltic pump, described gas and water separator links to each other with waste liquid barrel through the 4th peristaltic pump, and the 3rd peristaltic pump, the 4th peristaltic pump are electrically connected with described control circuit respectively.After nonvalent mercury was measured, the waste liquid in the gas and water separator was extracted in the waste liquid barrel by the 4th peristaltic pump, empties gas and water separator, improved the effect that gas and water separator is removed water vapour next time; After the divalence mercury measurement was good, the waste liquid in the reactor was extracted in the waste liquid barrel by the 3rd peristaltic pump, and the waste liquid in the gas and water separator is extracted in the waste liquid barrel by the 4th peristaltic pump, emptied reactor and gas and water separator, improved the accuracy of next time measuring.
As preferably, described sampler comprises sampling probe, smoke filter and air extractor, sampling probe links to each other with smoke filter, smoke filter links to each other by the air intake opening of trace pipe road and described reactor, the gas outlet of reactor links to each other by the air intake opening of pipeline and described gas and water separator, the gas outlet of gas and water separator links to each other by the air intake opening of pipeline with described mercury measurement device, and the gas outlet of mercury measurement device links to each other with described air extractor.Sampling probe, smoke filter, reactor, gas and water separator and mercury measurement device link to each other successively and constitute the gas passage of flowing through, air extractor is bled, and the flue gas in the tested flue enters sampling probe, the dust in smoke filter elimination flue gas, the trace pipe road of flowing through enters in the reactor.The controlled circuit control of air extractor, sampling is convenient, is finished automatically by system.
As preferably, described air extractor comprises fluidic device and air compressor machine, and air compressor machine links to each other with fluidic device, and fluidic device links to each other with the gas outlet of described mercury measurement device again, and described fluidic device, air compressor machine are electrically connected with described control circuit respectively.Air compressor machine produces pressurized air, and the blowback source of the gas is provided, and under the cooperating of fluidic device, produces draft, and the flue gas in the tested flue is extracted in the sampling probe.Fluidic device can adopt the heated jet device.
The monitoring method of flue gas form mercury emissions continuous monitor system of the present invention may further comprise the steps:
A. under the control of described control circuit, described first peristaltic pump starts, and the divalence mercury adsorbent solution that is contained in described first container is injected described reactor;
B. under the control of described control circuit, described sampler is gathered the flue gas in the tested flue and flue gas is flowed to described reactor, divalence mercury in reactor in the flue gas is absorbed by the divalence mercury adsorbent solution in the reactor, be absorbed mercuric flue gas and entered described gas and water separator again, gas and water separator is removed the water vapour in the flue gas, the flue gas of having removed water vapour enters described mercury measurement device again, is gone out the concentration of nonvalent mercury in the flue gas by the mercury measurement measurement device;
C. under the control of described control circuit, described second peristaltic pump starts, the divalence mercury reducing solution that is contained in described second container is injected described reactor, the divalence mercury that is absorbed by divalence mercury adsorbent solution in reactor is reduced into nonvalent mercury, the gas that has nonvalent mercury enters described gas and water separator again, gas and water separator is removed the water vapour in this gas, the gas of having removed water vapour enters described mercury measurement device again, go out the concentration of nonvalent mercury in this gas by the mercury measurement measurement device, the concentration of this nonvalent mercury is mercuric concentration in the former flue gas.
In the technical program, sampler, first peristaltic pump, second peristaltic pump and mercury measurement device be the automatic control of controlled circuit all, when start, when stop, finished work schedule in the control circuit, so whole test process need not be hand-manipulated, finished automatically by system entirely, be implemented in the line automation continuous monitoring, and the sample sampling quantity seldom, increases work efficiency greatly, also improves measuring accuracy.Measure used chemical reagent also seldom, effectively reduce cost.
As preferably, described flue gas form mercury emissions continuous monitor system comprises waste liquid barrel, the 3rd peristaltic pump and the 4th peristaltic pump, described reactor links to each other with waste liquid barrel through the 3rd peristaltic pump, described gas and water separator links to each other with waste liquid barrel through the 4th peristaltic pump, and the 3rd peristaltic pump, the 4th peristaltic pump are electrically connected with described control circuit respectively; In the described monitoring method, between step b and step c, also have a step b1, also have a steps d behind the step c; Step b1 is: under the control of described control circuit, described the 4th peristaltic pump starts, and the waste liquid in the described gas and water separator is entered in the described waste liquid barrel; Steps d is: under the control of described control circuit, described the 3rd peristaltic pump and the 4th peristaltic pump start, by the 3rd peristaltic pump the waste liquid in the described reactor is entered in the described waste liquid barrel, by the 4th peristaltic pump the waste liquid in the described gas and water separator is entered in the described waste liquid barrel.After nonvalent mercury was measured, the waste liquid in the gas and water separator was extracted in the waste liquid barrel by the 4th peristaltic pump, empties gas and water separator, improved the effect that gas and water separator is removed water vapour next time; After the divalence mercury measurement was good, the waste liquid in the reactor was extracted in the waste liquid barrel by the 3rd peristaltic pump, and the waste liquid in the gas and water separator is extracted in the waste liquid barrel by the 4th peristaltic pump, emptied reactor and gas and water separator, improved the accuracy of next time measuring.
As preferably, described sampler comprises sampling probe, smoke filter and fluidic device, air compressor machine, sampling probe links to each other with smoke filter, smoke filter links to each other by the air intake opening of trace pipe road and described reactor, the gas outlet of reactor links to each other by the air intake opening of pipeline and described gas and water separator, the gas outlet of gas and water separator links to each other by the air intake opening of pipeline with described mercury measurement device phase, the gas outlet of mercury measurement device links to each other with fluidic device, fluidic device links to each other with air compressor machine again, described fluidic device, air compressor machine is electrically connected with described control circuit respectively; In described step b, the sample acquisitions method of described sampler is: controlled by described control circuit, described air compressor machine produces pressurized air, described fluidic device starts, produce draft, through the gas that constitutes of being linked to each other successively by sampling probe, smoke filter, reactor, gas and water separator and the mercury measurement device passage of flowing through, flue gas in the tested flue is extracted in the described sampling probe, and the flue gas that the collects described smoke filter of flowing through again enters described reactor.Air compressor machine produces pressurized air, provides the blowback source of the gas, under the cooperating of fluidic device, produce draft, the flue gas in the tested flue is extracted in the sampling probe dust of the flue gas that collects in smoke filter elimination flue gas, the trace pipe road of flowing through enters in the reactor.Sampling is convenient, the also full automation of sampling.
The invention has the beneficial effects as follows: 1) monitoring system is simple in structure, only needs a reactor and a gas and water separator, has reduced the possibility that the device fault generation is leaked, and improves reliability; 2) each monitoring only needs to use nontoxic, harmless, the non-corrosive chemical reagent of minute quantity, avoids pollution on the environment; 3) low cost of manufacture, operating cost is lower; 4) monitor the sample sampling quantity seldom, collection and measurement are completely implemented at the line automation operation, have broken away from manual operations, increase work efficiency greatly, also improve measuring accuracy at every turn.
Description of drawings
Fig. 1 is a kind of system syndeton block diagram of flue gas form mercury emissions continuous monitor system of the present invention.
1. reactors among the figure, 2. gas and water separator, 3. mercury measurement device, 4. first container, 5. second container, 6. first peristaltic pump, 7. second peristaltic pump, 8. refrigerating plant, 9. waste liquid barrel, 10. the 3rd peristaltic pump, 11. the 4th peristaltic pumps, 12. sampling probes, 13. smoke filter, 14. trace pipe roads, 15. fluidic devices, 16. air compressor machine, 17. tested flues.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the flue gas form mercury emissions continuous monitor system of present embodiment, as shown in Figure 1, comprise the sampler that constituted by sampling probe 12, smoke filter 13, fluidic device 15 and air compressor machine 16 and reactor 1, gas and water separator 2, mercury measurement device 3, refrigerating plant 8, first container 4, second container 5, waste liquid barrel 9, first peristaltic pump 6, second peristaltic pump 7, the 3rd peristaltic pump 10, the 4th peristaltic pump 11 and control circuit.Sampling probe 12 is installed in the tested flue 17, sampling probe 12 links to each other with smoke filter 13, smoke filter 13 links to each other by the air intake opening of trace pipe road 14 and reactor 1, the gas outlet of reactor 1 links to each other by the air intake opening of pipeline with gas and water separator 2, the gas outlet of gas and water separator 2 links to each other by the air intake opening of pipeline with mercury measurement device 3, the gas outlet of mercury measurement device 3 links to each other with fluidic device 15, and fluidic device 15 links to each other with air compressor machine 16.Sampling probe 12, smoke filter 13, reactor 1, gas and water separator 2 and mercury measurement device 3 link to each other successively and constitute the flue gas passage of flowing through.Reactor 1 and gas and water separator 2 are arranged in the refrigerating plant 8, and this refrigerating plant is semiconductor cooling device.First container 4 links to each other by the import of pipeline with first peristaltic pump 6, the outlet of first peristaltic pump 6 links to each other with the opening that is positioned at reactor 1 bottom by pipeline, second container 5 links to each other by the import of pipeline with second peristaltic pump 7, and the outlet of second peristaltic pump 7 also links to each other with the opening that is positioned at reactor 1 bottom by pipeline.Divalence mercury adsorbent solution is housed in first container 4, and this divalence mercury adsorbent solution is Klorvess Liquid, and divalence mercury reducing solution is housed in second container 5, and this divalence mercury reducing solution is the composite reduction solution of being made up of PH correctives and reductive agent.Stretched into a waste liquid in the waste liquid barrel 9 and entered pipe, the opening that is positioned at reactor 1 bottom also links to each other by the import of pipeline with the 3rd peristaltic pump 10, and the outlet of the 3rd peristaltic pump 10 enters pipe by pipeline and waste liquid and links to each other.An opening is also arranged at the bottom of gas and water separator 2, and this opening links to each other by the import of pipeline with the 4th peristaltic pump 11, and the outlet of the 4th peristaltic pump 11 enters pipe with waste liquid and links to each other.Fluidic device 15, air compressor machine 16, first peristaltic pump 6, second peristaltic pump 7, the 3rd peristaltic pump 10, the 4th peristaltic pump 11 and mercury measurement device 3 link to each other with control circuit by cable respectively.
The monitoring method of above-mentioned flue gas form mercury emissions continuous monitor system may further comprise the steps:
A. under the control of control circuit, first peristaltic pump 6 starts, with Klorvess Liquid (the divalence mercury adsorbent solution) injecting reactor 1 that is contained in first container 4;
B. under the control of control circuit, air compressor machine 16 produces pressurized air, fluidic device 15 starts, produce draft, process is by sampling probe 12, smoke filter 13, reactor 1, gas and water separator 2 and mercury measurement device 3 gas that the constitutes passage of flowing through that links to each other successively, flue gas in the tested flue is extracted in the sampling probe 12, the flue gas that the collects smoke filter 13 of flowing through again enters reactor 1, in reactor 1, divalence mercury in the flue gas is absorbed by the Klorvess Liquid in the reactor 1, be absorbed mercuric flue gas and entered gas and water separator 2 again, gas and water separator 2 is removed the water vapour in the flue gas, the flue gas of having removed water vapour enters mercury measurement device 3 again, is measured the concentration of nonvalent mercury in the flue gas by mercury measurement device 3;
B1. under the control of control circuit, the 4th peristaltic pump 11 starts, and the waste liquid in the gas and water separator 2 is entered in the waste liquid barrel 9;
C. under the control of control circuit, second peristaltic pump 7 starts, with composite reduction solution (the divalence mercury reducing solution) injecting reactor 1 that is contained in second container 5, in reactor 1, the divalence mercury that is chlorinated the potassium solution absorption is reduced into nonvalent mercury, the gas that has nonvalent mercury enters gas and water separator 2 again, gas and water separator 2 is removed the water vapour in this gas, the gas of having removed water vapour enters mercury measurement device 3 again, measure the concentration of nonvalent mercury in this gas by mercury measurement device 3, the concentration of this nonvalent mercury is mercuric concentration in the former flue gas;
D. under the control of control circuit, the 3rd peristaltic pump 10 and the 4th peristaltic pump 11 start, and by the 3rd peristaltic pump 10 waste liquid in the reactor 1 are entered in the waste liquid barrel 9, by the 4th peristaltic pump 11 waste liquid in the gas and water separator 2 are entered in the waste liquid barrel 9.
So far, finish a flue gas form mercury emissions monitoring, repeating step a～steps d can be carried out continuous monitoring to the flue gas form mercury emissions in the tested flue.
Claims (9)
1. flue gas form mercury emissions continuous monitor system, it is characterized in that comprising sampler, reactor (1), gas and water separator (2), mercury measurement device (3), first container (4), second container (5) and control circuit, sampler links to each other with reactor (1) by pipeline, reactor (1) links to each other with gas and water separator (2) by pipeline again, gas and water separator (2) links to each other with mercury measurement device (3) by pipeline again, first container (4) links to each other with described reactor (1) through first peristaltic pump (6), second container (5) links to each other with described reactor (1) through second peristaltic pump (7), divalence mercury adsorbent solution is housed in first container (4), divalence mercury reducing solution is housed, described sampler in second container (5), first peristaltic pump (6), second peristaltic pump (7) and mercury measurement device (3) are electrically connected with described control circuit respectively.
2. flue gas form mercury emissions continuous monitor system according to claim 1 is characterized in that comprising a refrigerating plant (8), and described reactor (1) and gas and water separator (2) are arranged in the refrigerating plant (8).
3. flue gas form mercury emissions continuous monitor system according to claim 1, it is characterized in that the divalence mercury adsorbent solution that is contained in described first container (4) is Klorvess Liquid, be contained in the composite reduction solution of divalence mercury reducing solution for being formed by PH correctives and reductive agent in described second container (5).
4. according to claim 1 or 2 or 3 described flue gas form mercury emissions continuous monitor systems, it is characterized in that comprising waste liquid barrel (9), the 3rd peristaltic pump (10) and the 4th peristaltic pump (11), described reactor (1) links to each other with waste liquid barrel (9) through the 3rd peristaltic pump (10), described gas and water separator (2) links to each other with waste liquid barrel (9) through the 4th peristaltic pump (11), and the 3rd peristaltic pump (10), the 4th peristaltic pump (11) are electrically connected with described control circuit respectively.
5. according to claim 1 or 2 or 3 described flue gas form mercury emissions continuous monitor systems, it is characterized in that described sampler comprises sampling probe (12), smoke filter (13) and air extractor, sampling probe (12) links to each other with smoke filter (13), smoke filter (13) links to each other by the air intake opening of trace pipe road (14) and described reactor (1), the gas outlet of reactor (1) links to each other by the air intake opening of pipeline with described gas and water separator (2), the gas outlet of gas and water separator (2) links to each other by the air intake opening of pipeline with described mercury measurement device (3), and the gas outlet of mercury measurement device (3) links to each other with described air extractor.
6. flue gas form mercury emissions continuous monitor system according to claim 5, it is characterized in that described air extractor comprises fluidic device (15) and air compressor machine (16), air compressor machine (16) links to each other with fluidic device (15), fluidic device (15) links to each other with the gas outlet of described mercury measurement device (3) again, and described fluidic device (15), air compressor machine (16) are electrically connected with described control circuit respectively.
7. the monitoring method of a flue gas form mercury emissions continuous monitor system as claimed in claim 1 is characterized in that may further comprise the steps:
A. under the control of described control circuit, described first peristaltic pump (6) starts, and the divalence mercury adsorbent solution that will be contained in described first container (4) injects described reactor (1);
B. under the control of described control circuit, described sampler is gathered the flue gas in the tested flue and flue gas is flowed to described reactor (1), divalence mercury in reactor (1) in the flue gas is absorbed by the divalence mercury adsorbent solution in the reactor (1), be absorbed mercuric flue gas and entered described gas and water separator (2) again, gas and water separator (2) is removed the water vapour in the flue gas, the flue gas of having removed water vapour enters described mercury measurement device (3) again, is measured the concentration of nonvalent mercury in the flue gas by mercury measurement device (3);
C. under the control of described control circuit, described second peristaltic pump (7) starts, the divalence mercury reducing solution that will be contained in described second container (5) injects described reactor (1), the divalence mercury that is absorbed by divalence mercury adsorbent solution in reactor (1) is reduced into nonvalent mercury, the gas that has nonvalent mercury enters described gas and water separator (2) again, gas and water separator (2) is removed the water vapour in this gas, the gas of having removed water vapour enters described mercury measurement device (3) again, measure the concentration of nonvalent mercury in this gas by mercury measurement device (3), the concentration of this nonvalent mercury is mercuric concentration in the former flue gas.
8. monitoring method according to claim 7, it is characterized in that described flue gas form mercury emissions continuous monitor system comprises waste liquid barrel (9), the 3rd peristaltic pump (10) and the 4th peristaltic pump (11), described reactor (1) links to each other with waste liquid barrel (9) through the 3rd peristaltic pump (10), described gas and water separator (2) links to each other with waste liquid barrel (9) through the 4th peristaltic pump (11), and the 3rd peristaltic pump (10), the 4th peristaltic pump (11) are electrically connected with described control circuit respectively; In the described monitoring method, between step b and step c, also have a step b1, also have a steps d behind the step c; Step b1 is: under the control of described control circuit, described the 4th peristaltic pump (11) starts, and the waste liquid in the described gas and water separator (2) is entered in the described waste liquid barrel (9); Steps d is: under the control of described control circuit, described the 3rd peristaltic pump (10) and the 4th peristaltic pump (11) start, by the 3rd peristaltic pump (10) waste liquid in the described reactor (1) is entered in the described waste liquid barrel (9), by the 4th peristaltic pump (11) waste liquid in the described gas and water separator (2) is entered in the described waste liquid barrel (9).
9. according to claim 7 or 8 described monitoring methods, it is characterized in that described sampler comprises sampling probe (12), smoke filter (13) and fluidic device (15), air compressor machine (16), sampling probe (12) links to each other with smoke filter (13), smoke filter (13) links to each other by the air intake opening of trace pipe road (14) and described reactor (1), the gas outlet of reactor (1) links to each other by the air intake opening of pipeline with described gas and water separator (2), the gas outlet of gas and water separator (2) links to each other by the air intake opening of pipeline with described mercury measurement device (3), the gas outlet of mercury measurement device (3) links to each other with fluidic device (15), fluidic device (15) links to each other with air compressor machine (16) again, described fluidic device (15), air compressor machine (16) is electrically connected with described control circuit respectively; In described step b, the sample acquisitions method of described sampler is: controlled by described control circuit, described air compressor machine (16) produces pressurized air, described fluidic device (15) starts, produce draft, process is by sampling probe (12), smoke filter (13), reactor (1), gas and water separator (2) and mercury measurement device (3) gas that the constitutes passage of flowing through that links to each other successively, flue gas in the tested flue is extracted in the described sampling probe (12), and the flue gas that the collects described smoke filter (13) of flowing through again enters described reactor (1).
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