CN103293326B - Mercury-containing fumes emission continuous monitoring system and monitoring method thereof - Google Patents
Mercury-containing fumes emission continuous monitoring system and monitoring method thereof Download PDFInfo
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- CN103293326B CN103293326B CN 201310094764 CN201310094764A CN103293326B CN 103293326 B CN103293326 B CN 103293326B CN 201310094764 CN201310094764 CN 201310094764 CN 201310094764 A CN201310094764 A CN 201310094764A CN 103293326 B CN103293326 B CN 103293326B
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 168
- 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 108
- 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 74
- 239000007788 liquid Substances 0.000 claims description 55
- 239000003546 flue gas Substances 0.000 claims description 52
- 239000002699 waste material Substances 0.000 claims description 48
- 239000000779 smoke Substances 0.000 claims description 33
- 239000000523 sample Substances 0.000 claims description 31
- 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
- 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
- 238000007599 discharging 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 group [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
- 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
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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 in flue gas content, 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, to humans and animals, can cause great harm, to nervous system, can cause irreversible infringement.The residence time of nonvalent mercury in atmosphere reaches 0.5～2 year, can also move in 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 the mercury in flue gas of discharging after coal burning is mainly discharged with the form of gas phase divalence mercury and gas phase nonvalent mercury.The mercury of each form has its unique physicochemical property, and therefore, their discharge, propagation, deposition characteristics and method for catching are different.The concentration of test mercury in flue gas can be understood enterprise's coal-fired flue-gas mercury emissions situation at any time, for exploring coal-fired flue-gas mercury control technology and formulating the discharge of regulation limitations mercury pollution, provide reliable data, thereby reduce the impact that mercury pollution causes human health and ball ecological environment.
Mercury concentration in test coal-fired flue-gas, the external classical way adopting is Ontario method, Ontario method gas mercury test macro is mainly by the stopple coupon being connected successively, smoke filter and eight absorption bottles form, eight absorption bottles are placed in ice bath, wherein in three absorption bottles, Klorvess Liquid is housed above, 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 all housed, also for absorbing nonvalent mercury, in last absorption bottle, discolour silica gel is housed, for absorbing the water vapour of flue gas.After sampling finishes, also the absorption liquid sample in each absorption bottle to be cleared up, then with the hydrochloric acid solution of stannous chloride, reduce, finally distinguish the mercury concentration in working sample.Therefore, this method of testing has the following disadvantages: eight absorption bottles need to 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; System architecture is complicated, and the faults such as leakage easily occur, and reliability is low; Sample collection amount is more, larger, and test process can only manual operations, can not on-line automaticization continuous monitoring, and work efficiency is lower, also affects measuring accuracy.
Summary of the invention
The technical matters that the present invention mainly solves original smoke mercury emission 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 leakage improved the reliability of monitoring.
The present invention solves original smoke mercury emission 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 affects 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 amount is few, gathers and test process full automation, realizes the continuous monitoring of on-line automaticization of smoke mercury emission concentration, and work efficiency is high, also improves measuring accuracy.
The present invention solves again original smoke mercury emission concentration measuring method need to consume the chemical reagent of poisonous, harmful, severe corrosive, both contaminated environment, the again higher technical matters of cost 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 chemical reagent used is nontoxic, harmless, does not both pollute the environment, and reduces costs 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, mercury measurement device, the first container, second container and control circuit, sampler is connected with reactor by pipeline, reactor is connected with gas and water separator by pipeline again, gas and water separator is connected with mercury measurement device by pipeline again, the first container is connected with described reactor through the first peristaltic pump, second container is connected with described reactor through the second peristaltic pump, divalence mercury adsorbent solution is housed in the first container, divalence mercury reducing solution is housed in second container, described sampler, the first peristaltic pump, the second peristaltic pump and mercury measurement device are electrically connected to described control circuit respectively.Gas and water separator is an airtight container.During monitoring, by the first peristaltic pump, the divalence mercury adsorbent solution in the first container is extracted in reactor, sampler gathers flue gas from tested flue, the flue gas collecting enters reactor, divalence mercury adsorbent solution in reactor absorbs the divalence mercury in flue gas, then do not had mercuric flue gas to enter again gas and water separator, entered again mercury measurement device after removing water vapour, by mercury measurement device, measured the concentration of nonvalent mercury in flue gas.Then by the second peristaltic pump, the divalence mercury reducing solution in second container is extracted in reactor, the divalence mercury of staying in reactor is reduced to nonvalent mercury, gas with nonvalent mercury enters gas and water separator again, after removing water vapour, enter again mercury measurement device, by mercury measurement device, measure the concentration of nonvalent mercury in this gas, this concentration is mercuric concentration in former flue gas.Like this, nonvalent mercury and mercuric concentration in the flue gas discharging in tested flue have all obtained monitoring.Because mercury measurement device can only be measured nonvalent mercury, so the divalence mercury in flue gas must be reduced into nonvalent mercury, could measure.This monitoring system is only used a reactor and a gas and water separator, simple in structure, has reduced and has leaked the possibility occurring, and improves reliability, low cost of manufacture, and operating cost is lower.Sampler, the first peristaltic pump, the second peristaltic pump and mercury measurement device be the automatic control of controlled circuit all, when start, when stop, in control circuit, finished work schedule, therefore whole test process need not be hand-manipulated, entirely by system, automatically completed, realize on-line automaticization continuous monitoring, and to smoke sampling once, before and after mercury measurement device, only need measure two samples, just can measure the concentration of form mercury in flue gas, greatly increase work efficiency, 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 refrigerating plant.Refrigerating plant generally adopts semiconductor cooling device, certainly also can adopt other refrigeration plants, as also reactor and gas and water separator being positioned in ice bath.Stablize the chemical property of chemical reagent in flue gas and reactor, be conducive to gas and water separator and remove the water vapour in flue gas, the measurement data that makes mercury measurement device more reliably, more accurate.
As preferably, the divalence mercury adsorbent solution being contained in the first described container is Klorvess Liquid, is contained in divalence mercury reducing solution in the described second container composite reduction solution for being comprised of PH correctives and reductive agent.The technical program is only used two kinds of chemical reagent, and the use amount that greatly reduces chemical reagent is few, reduce costs, and chemical reagent used is nontoxic, harmless, does not also have severe corrosive, therefore, do not pollute the environment, and 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 is connected with waste liquid barrel through the 3rd peristaltic pump, described gas and water separator is connected with waste liquid barrel through the 4th peristaltic pump, and the 3rd peristaltic pump, the 4th peristaltic pump are electrically connected to described control circuit respectively.After nonvalent mercury is measured, the waste liquid in gas and water separator is extracted in waste liquid barrel by the 4th peristaltic pump, empties gas and water separator, improves the effect that gas and water separator is removed water vapour next time; After divalence mercury measurement is good, the waste liquid in reactor is extracted in waste liquid barrel by the 3rd peristaltic pump, and the waste liquid in gas and water separator is extracted in waste liquid barrel by the 4th peristaltic pump, empties reactor and gas and water separator, improves the accuracy of next time measuring.
As preferably, described sampler comprises sampling probe, smoke filter and air extractor, sampling probe is connected with smoke filter, smoke filter is connected by the air intake opening of trace pipe road and described reactor, the gas outlet of reactor is connected by the air intake opening of pipeline and described gas and water separator, the gas outlet of gas and water separator is connected by the air intake opening of pipeline and described mercury measurement device, and the gas outlet of mercury measurement device is connected with described air extractor.Sampling probe, smoke filter, reactor, gas and water separator and mercury measurement device are connected successively and form gas flow through passage, air extractor is bled, and the flue gas in tested flue enters sampling probe, the dust in smoke filter elimination flue gas, the trace pipe road of flowing through, enters in reactor.The controlled circuit of air extractor is controlled, and sampling is convenient, by system, is automatically completed.
As preferably, described air extractor comprises fluidic device and air compressor machine, and air compressor machine is connected with fluidic device, and fluidic device is connected with the gas outlet of described mercury measurement device again, and described fluidic device, air compressor machine are electrically connected to described control circuit respectively.Air compressor machine produces pressurized air, and blowback source of the gas is provided, and under the cooperating of fluidic device, produces draft, and the flue gas in tested flue is extracted in sampling probe.Fluidic device can adopt heated jet device.
The monitoring method of flue gas form mercury emissions continuous monitor system of the present invention, comprises the following steps:
A. under the control of described control circuit, the first described peristaltic pump starts, and the divalence mercury adsorbent solution being contained in the first described container is injected to described reactor;
B. under the control of described control circuit, described sampler gathers the flue gas in tested flue and flue gas is flowed to described reactor, divalence mercury in reactor in flue gas is absorbed by the divalence mercury adsorbent solution in reactor, be absorbed mercuric flue gas and entered again described gas and water separator, gas and water separator is removed the water vapour in flue gas, the flue gas of having removed water vapour enters described mercury measurement device again, by mercury measurement measurement device, goes out the concentration of nonvalent mercury in flue gas;
C. under the control of described control circuit, the second described peristaltic pump starts, the divalence mercury reducing solution being contained in described second container is injected to described reactor, the divalence mercury being absorbed by divalence mercury adsorbent solution in reactor is reduced into nonvalent mercury, gas with 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, by mercury measurement measurement device, go out the concentration of nonvalent mercury in this gas, the concentration of this nonvalent mercury is mercuric concentration in former flue gas.
In the technical program, sampler, the first peristaltic pump, the second peristaltic pump and mercury measurement device be the automatic control of controlled circuit all, when start, when stop, in control circuit, finished work schedule, therefore whole test process need not be hand-manipulated, entirely by system, automatically completed, realize on-line automaticization continuous monitoring, and sample sampling quantity seldom, greatly increases work efficiency, also improve measuring accuracy.Measure chemical reagent used also seldom, effectively reduce costs.
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 is connected with waste liquid barrel through the 3rd peristaltic pump, described gas and water separator is connected with waste liquid barrel through the 4th peristaltic pump, and the 3rd peristaltic pump, the 4th peristaltic pump are electrically connected to described control circuit respectively; In described monitoring method, between step b and step c, also have a step b1, after step c, also have a steps d; Step b1 is: under the control of described control circuit, the 4th described peristaltic pump starts, and the waste liquid in described gas and water separator is entered in described waste liquid barrel; Steps d is: under the control of described control circuit, the 3rd described peristaltic pump and the 4th peristaltic pump start, by the 3rd peristaltic pump, the waste liquid in described reactor is entered in described waste liquid barrel, by the 4th peristaltic pump, the waste liquid in described gas and water separator is entered in described waste liquid barrel.After nonvalent mercury is measured, the waste liquid in gas and water separator is extracted in waste liquid barrel by the 4th peristaltic pump, empties gas and water separator, improves the effect that gas and water separator is removed water vapour next time; After divalence mercury measurement is good, the waste liquid in reactor is extracted in waste liquid barrel by the 3rd peristaltic pump, and the waste liquid in gas and water separator is extracted in waste liquid barrel by the 4th peristaltic pump, empties reactor and gas and water separator, improves the accuracy of next time measuring.
As preferably, described sampler comprises sampling probe, smoke filter and fluidic device, air compressor machine, sampling probe is connected with smoke filter, smoke filter is connected by the air intake opening of trace pipe road and described reactor, the gas outlet of reactor is connected by the air intake opening of pipeline and described gas and water separator, the gas outlet of gas and water separator is connected by the air intake opening of pipeline and described mercury measurement device phase, the gas outlet of mercury measurement device is connected with fluidic device, fluidic device is connected with air compressor machine again, described fluidic device, air compressor machine is electrically connected to 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, the gas flow forming through being connected successively by sampling probe, smoke filter, reactor, gas and water separator and mercury measurement device is through passage, flue gas in tested flue is extracted in described sampling probe, and the flue gas the collecting described smoke filter of flowing through again enters described reactor.Air compressor machine produces pressurized air, provides blowback source of the gas, under the cooperating of fluidic device, produce draft, the flue gas in tested flue is extracted in sampling probe to the dust of the flue gas collecting in smoke filter elimination flue gas, the trace pipe road of flowing through, enters in 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 need a reactor and a gas and water separator, reduced device fault the possibility of leaking occurs, improve 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 sample sampling quantity seldom, collection and measurement are completely implemented at line automation operation, have broken away from manual operations, greatly increase work efficiency, and also improve measuring accuracy at every turn.
Accompanying drawing explanation
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 in figure, 2. gas and water separator, 3. mercury measurement device, 4. the first container, 5. second container, 6. the first peristaltic pump, 7. the 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 filters, 14. trace pipe roads, 15. fluidic devices, 16. air compressor machines, 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 the present embodiment, as shown in Figure 1, comprise the sampler that formed 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, the first container 4, second container 5, waste liquid barrel 9, the first peristaltic pump 6, the second peristaltic pump 7, the 3rd peristaltic pump 10, the 4th peristaltic pump 11 and control circuit.Sampling probe 12 is arranged in tested flue 17, sampling probe 12 is connected with smoke filter 13, smoke filter 13 is connected with the air intake opening of reactor 1 by trace pipe road 14, the gas outlet of reactor 1 is connected with the air intake opening of gas and water separator 2 by pipeline, the gas outlet of gas and water separator 2 is connected with the air intake opening of mercury measurement device 3 by pipeline, the gas outlet of mercury measurement device 3 is connected with fluidic device 15, and fluidic device 15 is connected with air compressor machine 16.Sampling probe 12, smoke filter 13, reactor 1, gas and water separator 2 and mercury measurement device 3 are connected successively and form smoke gas flow through passage.Reactor 1 and gas and water separator 2 are arranged in refrigerating plant 8, and this refrigerating plant is semiconductor cooling device.The first container 4 is connected with the import of the first peristaltic pump 6 by pipeline, the outlet of the first peristaltic pump 6 is connected with the opening that is positioned at reactor 1 bottom by pipeline, second container 5 is connected with the import of the second peristaltic pump 7 by pipeline, and the outlet of the second peristaltic pump 7 is also connected with the opening that is positioned at reactor 1 bottom by pipeline.Divalence mercury adsorbent solution is housed in the 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 being comprised of PH correctives and reductive agent.In waste liquid barrel 9, stretched into a waste liquid and entered pipe, the opening that is positioned at reactor 1 bottom is also connected with the import of the 3rd peristaltic pump 10 by pipeline, and the outlet of the 3rd peristaltic pump 10 enters pipe by pipeline and waste liquid and is connected.An opening is also arranged at the bottom of gas and water separator 2, and this opening is connected with the import of the 4th peristaltic pump 11 by pipeline, and the outlet of the 4th peristaltic pump 11 enters pipe with waste liquid and is connected.Fluidic device 15, air compressor machine 16, the first peristaltic pump 6, the second peristaltic pump 7, the 3rd peristaltic pump 10, the 4th peristaltic pump 11 and mercury measurement device 3 are connected with control circuit by cable respectively.
The monitoring method of above-mentioned flue gas form mercury emissions continuous monitor system, comprises the following steps:
A. under the control of control circuit, the first peristaltic pump 6 starts, by Klorvess Liquid (the divalence mercury adsorbent solution) injecting reactor 1 being contained in the 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 are connected the gas flow that forms successively through passage, flue gas in tested flue is extracted in sampling probe 12, the flue gas the collecting smoke filter 13 of flowing through again enters reactor 1, in reactor 1, divalence mercury in flue gas is absorbed by the Klorvess Liquid in reactor 1, be absorbed mercuric flue gas and entered again gas and water separator 2, gas and water separator 2 is removed the water vapour in flue gas, the flue gas of having removed water vapour enters mercury measurement device 3 again, by mercury measurement device 3, measure the concentration of nonvalent mercury in flue gas,
B1. under the control of control circuit, the 4th peristaltic pump 11 starts, and the waste liquid in gas and water separator 2 is entered in waste liquid barrel 9;
C. under the control of control circuit, the second peristaltic pump 7 starts, by composite reduction solution (the divalence mercury reducing solution) injecting reactor 1 being contained in second container 5, in reactor 1, the divalence mercury that is chlorinated potassium solution absorption is reduced into nonvalent mercury, gas with 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, by mercury measurement device 3, measure the concentration of nonvalent mercury in this gas, the concentration of this nonvalent mercury is mercuric concentration in 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, the waste liquid in reactor 1 are entered in waste liquid barrel 9, by the 4th peristaltic pump 11, the waste liquid in gas and water separator 2 are entered in waste liquid barrel 9.
So far, complete a flue gas form mercury emissions monitoring, repeating step a～steps d, can carry out continuous monitoring to the flue gas form mercury emissions in tested flue.
Claims (8)
1. a 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), the first container (4), second container (5) and control circuit, sampler is connected with reactor (1) by pipeline, reactor (1) is connected with gas and water separator (2) by pipeline again, gas and water separator (2) is connected with mercury measurement device (3) by pipeline again, the first container (4) is connected with described reactor (1) through the first peristaltic pump (6), second container (5) is connected with described reactor (1) through the second peristaltic pump (7), divalence mercury adsorbent solution is housed in the first container (4), divalence mercury reducing solution is housed in second container (5), described sampler, the first peristaltic pump (6), the second peristaltic pump (7) and mercury measurement device (3) are electrically connected to described control circuit respectively, described sampler comprises sampling probe (12), smoke filter (13) and air extractor, sampling probe (12) is connected with smoke filter (13), smoke filter (13) is connected by the air intake opening of trace pipe road (14) and described reactor (1), the gas outlet of reactor (1) is connected by the air intake opening of pipeline and described gas and water separator (2), the gas outlet of gas and water separator (2) is connected by the air intake opening of pipeline and described mercury measurement device (3), and the gas outlet of mercury measurement device (3) is connected with described air extractor.
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 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 being contained in described the first container (4) is Klorvess Liquid, the divalence mercury reducing solution being contained in described second container (5) is the composite reduction solution being comprised of PH correctives and reductive agent.
4. according to the flue gas form mercury emissions continuous monitor system described in claim 1 or 2 or 3, it is characterized in that comprising waste liquid barrel (9), the 3rd peristaltic pump (10) and the 4th peristaltic pump (11), described reactor (1) is connected with waste liquid barrel (9) through the 3rd peristaltic pump (10), described gas and water separator (2) is connected 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 to described control circuit respectively.
5. flue gas form mercury emissions continuous monitor system according to claim 1, it is characterized in that described air extractor comprises fluidic device (15) and air compressor machine (16), air compressor machine (16) is connected with fluidic device (15), fluidic device (15) is connected with the gas outlet of described mercury measurement device (3) again, and described fluidic device (15), air compressor machine (16) are electrically connected to described control circuit respectively.
6. a monitoring method for flue gas form mercury emissions continuous monitor system as claimed in claim 1, is characterized in that comprising the following steps:
A. under the control of described control circuit, described the first peristaltic pump (6) starts, and the divalence mercury adsorbent solution being contained in described the first container (4) is injected to described reactor (1);
B. under the control of described control circuit, described sampler gathers the flue gas in tested flue and flue gas is flowed to described reactor (1), divalence mercury in reactor (1) in flue gas is absorbed by the divalence mercury adsorbent solution in reactor (1), be absorbed mercuric flue gas and entered again described gas and water separator (2), gas and water separator (2) is removed the water vapour in flue gas, the flue gas of having removed water vapour enters described mercury measurement device (3) again, by mercury measurement device (3), measures the concentration of nonvalent mercury in flue gas;
C. under the control of described control circuit, described the second peristaltic pump (7) starts, the divalence mercury reducing solution being contained in described second container (5) is injected to described reactor (1), the divalence mercury being absorbed by divalence mercury adsorbent solution in reactor (1) is reduced into nonvalent mercury, gas with 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, by mercury measurement device (3), measure the concentration of nonvalent mercury in this gas, the concentration of this nonvalent mercury is mercuric concentration in former flue gas.
7. monitoring method according to claim 6, 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) is connected with waste liquid barrel (9) through the 3rd peristaltic pump (10), described gas and water separator (2) is connected 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 to described control circuit respectively; In described monitoring method, between step b and step c, also have a step b1, after step c, also have a steps d; Step b1 is: under the control of described control circuit, the 4th described peristaltic pump (11) starts, and the waste liquid in described gas and water separator (2) is entered in described waste liquid barrel (9); Steps d is: under the control of described control circuit, the 3rd described peristaltic pump (10) and the 4th peristaltic pump (11) start, by the 3rd peristaltic pump (10), the waste liquid in described reactor (1) is entered in described waste liquid barrel (9), by the 4th peristaltic pump (11), the waste liquid in described gas and water separator (2) is entered in described waste liquid barrel (9).
8. according to the monitoring method described in claim 6 or 7, 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) is connected with smoke filter (13), smoke filter (13) is connected by the air intake opening of trace pipe road (14) and described reactor (1), the gas outlet of reactor (1) is connected by the air intake opening of pipeline and described gas and water separator (2), the gas outlet of gas and water separator (2) is connected by the air intake opening of pipeline and described mercury measurement device (3), the gas outlet of mercury measurement device (3) is connected with fluidic device (15), fluidic device (15) is connected with air compressor machine (16) again, described fluidic device (15), air compressor machine (16) is electrically connected to 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) are connected the gas flow that forms successively through passage, flue gas in tested flue is extracted in described sampling probe (12), the flue gas the collecting described smoke filter (13) of flowing through again enters described reactor (1).
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