CN108303280A - A kind of wet method fume desulfurizing system demister performance test experimental system and experimental method - Google Patents
A kind of wet method fume desulfurizing system demister performance test experimental system and experimental method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000002474 experimental method Methods 0.000 title claims abstract description 40
- 238000011056 performance test Methods 0.000 title claims abstract description 30
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 29
- 239000003517 fume Substances 0.000 title claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 74
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 64
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000005070 sampling Methods 0.000 claims abstract description 49
- 230000003189 isokinetic effect Effects 0.000 claims abstract description 37
- 239000003595 mist Substances 0.000 claims abstract description 37
- 238000000889 atomisation Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 230000001105 regulatory effect Effects 0.000 claims description 42
- 238000005507 spraying Methods 0.000 claims description 41
- 239000007789 gas Substances 0.000 claims description 30
- 238000012360 testing method Methods 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 15
- 238000005538 encapsulation Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 14
- 238000013401 experimental design Methods 0.000 claims description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 5
- 238000012827 research and development Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 description 8
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 6
- 239000012496 blank sample Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000003921 particle size analysis Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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Abstract
The invention belongs to gas-liquid separation technical field of research, it is related to a kind of wet method fume desulfurizing system demister performance test experimental system and experimental method.Including atomization system, demister system, induced draught system, mist droplet particle size measuring system, magnesium ion isokinetic sampling system, Pitot tube measuring system；The droplet that atomization system generates is delivered to demister system by induced draught system as hydrodynamic source, demister system completes demisting process, mist droplet particle size measuring system carries out demister entrance and demister outlet mist droplet particle size measures, magnesium ion isokinetic sampling's system carries out demister system demisting efficiency measurement, and Pitot tube measuring system measures pressure drop and linear speed；The invention also discloses the methods for using above system to be tested.The system and method switching experiment type and experiment condition of the present invention is very convenient, can meet different type demister performance test requirement, and data guidance is provided for the research and development of high-performance demister.
Description
Technical field
The invention belongs to gas-liquid separation technical field of research, are related to a kind of wet method fume desulfurizing system demister performance test
Experimental system and experimental method.
Background technology
SO is controlled using flue gas desulfurization device2Discharge has become the common recognition of each stratum of the whole society, Wet Flue Gas Desulfurization Technology
It is most widely used method, wherein lime stone-gypsum desulfurization is that technology is most ripe in the world, most widely used one kind
Desulfurization technology, this technique of the flue gas desulfurization device use in 90% or more thermal power plant.Demister is technique
One of key equipment, performance directly affect the operation conditions of entire wet method fume desulfurizing system.Demister fog removal performance does not reach
Rotating savings directly affects the normal operation of flue gas reheater, causes its fouling and corrosion, and also has to downstream flue and wind turbine huge
It is big to influence, or even " gypsum rain " is formed, cause the secondary pollution of environment.It is evaluation demisting that demister exiting flue gas, which carries drop amount,
Therefore one of the important indicator of device performance measures demister exiting flue gas carrying drop amount and may determine that demister fog removal performance
Whether meet wet method fume desulfurizing system requirement, demister exiting flue gas is generally required to carry drop amount no more than 75mg/m3,
Also realize that minimum discharge provides data and supports for research and development high efficiency demister simultaneously.
The test of demister fog removal performance is examined by the scientific research of object, new-product development and product export of demister
The important test content tested etc..Currently, China is complete there are no being measured to demister fog removal performance in wet method fume desulfurizing system
Whole experimental system and a whole set of experimental method cause China to research and develop large-scale, high-performance demister ability wretched insufficiency, crucial skill
Art parameter is under one's control.Moreover, the existing experimental system measured to demister fog removal performance domestic at present and experimental method lack
Convincingness, exist operation it is lack of standardization, measurement data is unreliable and experimental situation differs larger with demister actual operating mode
The shortcomings that.
Invention content
The technical problem to be solved by the present invention is to overcome the shortage of prior art, provide one kind and can truly present and remove
Day with fog fog removal performance, but a kind of wet method fume desulfurizing system demister performance that can give full play to laboratory experiment condition feature is surveyed
Try experimental system and experimental method.
The present invention solves the scheme that its technical problem is taken：A kind of wet method fume desulfurizing system demister performance test
Experimental system includes atomization system, demister system, induced draught system, mist droplet particle size measuring system, magnesium ion isokinetic sampling system, finishes
Trustship measuring system.
The atomization system includes motor, air compressor, high pressure buffer gas tank, air dryer, 2 adjustings
Valve, feed pipe, metering water tank, thermometer, screw pump, flowmeter, two-fluid spray nozzle, motor is as driving device and air pressure
Contracting machine coordinates, and air compressor, high pressure buffer gas tank, air dryer, regulating valve and two-fluid spray nozzle are defeated along high pressure gas
Direction is sent to be sequentially connected with by high-pressure air pipe；Feed pipe is connected to metering water tank, and thermometer is placed in the middle part of metering water tank, measures water
Case, screw pump, regulating valve, flowmeter and two-fluid spray nozzle are sequentially connected with along flow conveying direction by water-supply-pipe.
The demister system includes thermometer, dust-collecting bucket, organic glass encapsulation cylinder, demister outlet, demister, demister
Entrance, organic glass encapsulation cylinder are measured with atomization system, demister system, induced draught system, mist droplet particle size respectively as main body frame
System, magnesium ion isokinetic sampling system are connected with Pitot tube measuring system, and demister is with demister entrance under, demister outlet
It is placed in inside organic glass encapsulation cylinder in upper mode, dust-collecting bucket is placed in organic glass encapsulation cylinder bottom, for collecting demister
The droplet separated, thermometer is placed in below demister entrance, for measuring demister inlet droplet temperature.
The induced draught system includes protecting wind turbine gravity separator, regulating valve, air-introduced machine, adjustable frequency motor, frequency converter,
Protection wind turbine gravity separator, regulating valve, air-introduced machine and the adjustable frequency motor defeated direction outside gas are sequentially connected with by pipeline,
Frequency converter is connected by cable with variable-frequency motor as controller.
The mist droplet particle size measuring system includes computer, 2 spraying laser particle size analyzers, 2 spraying laser particle sizes point
Analyzer is respectively placed in demister entrance and demister exit, the droplet grain for measuring demister entrance and demister exit
Diameter, and connect respectively with computer by data line.
The magnesium ion isokinetic sampling system includes heater, superfluorescent fiber filter, thermometer, flowmeter, flow-rate adjustment
Valve, vacuum pump, motor, heater, superfluorescent fiber filter, flowmeter, flow control valve and vacuum pump pass through along pumping direction
Pipeline is sequentially connected with, and thermometer is placed in superfluorescent fiber filter rear portion, and motor drives vacuum pump work by V belt translation.
The Pitot tube measuring system is connect with demister system and induced draught system respectively, for measure linear speed in demister,
Pressure drop in air inducing pipeline between linear speed and the outlet of demister entrance and demister.
It is a kind of based on above-mentioned wet method fume desulfurizing system demister performance test experiment the present invention also aims to provide
A kind of wet method fume desulfurizing system demister performance test Thermal-state test method of system, this method successively according to the following steps into
Row：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；
Enough water is added into metering water tank by feed pipe, then opens metering heating water tanks power supply, sets atomization temperature progress
Heating, after reaching set temperature, the concentration that appropriate magnesium ion reaches experimental design requirement is added into water；Run air compression
Machine sets experimental pressure and carries out high pressure gas deposit；Computer and spraying laser particle size analyzer are finally opened, is opened mating soft
Part carries out instrument preheating after regulating mist droplet particle size testing background.
Second step is demister system moistening step：It is first turned on induced draught system power supply, is become by adjusting Frequency Converter Control
Frequency motor speed, and then air inducing fan delivery is adjusted, it monitors whether to reach in experimentation in real time by Pitot tube measuring system
The predetermined initial linear speed of demister, and record the pressure drop between demister entrance at this time and demister outlet；Then atomization is opened
The regulating valve of system simultaneously runs screw pump, controls water flow and high pressure air flow by regulating valve, reaches requirement of experiment
Liquid load value and atomizing effect, and pass through laser particle size analyzer real time on-line monitoring demister entrance mist droplet particle size value of spraying
Whether reach requirement of experiment, after aforesaid operations are adjusted to requirement of experiment, keep experimental system present situation to run 5 minutes, make the atomization be
The temperature value of thermometer measure in the temperature value and demister system of thermometer measure in system is equal, and makes reality in the process
Check system pipeline complete wetting.
Third step is DATA REASONING step：Experimental design requirement, based on the stable state of second step,
The measurement that spraying laser particle size analyzer completes demister entrance and demister outlet mist droplet particle size, note are controlled by computer software
The record stabilization data that Pitot tube measuring system monitors in real time at this time；In addition, opening magnesium ion isokinetic sampling's system power supply, start pair
Demister exit carries out isokinetic sampling and passes through flow-rate adjustment valve regulation sampling conduit by motor drive vacuum pump work
Interior linear speed is equal to linear speed in demister, and ensures that sample temperature is consistent with experimental system set temperature by heater, keeps steady
Surely it runs 20 minutes, isokinetic sampling is then carried out to demister inlet with same method with magnesium ion isokinetic sampling system.
Four steps is experimental facilities reconstitution steps：After the completion of DATA REASONING needed for experiment, magnesium ion out of service first
Isokinetic sampling's system, then the spraying laser particle size analyzer in mist droplet particle size measuring system out of service, atomization system successively
And induced draught system；It is last to close all regulating valves successively, complete primary complete fog removal performance test experiments.
5th step is that demisting efficiency calculates step, takes out the microfibre filter in magnesium ion isokinetic sampling's system first
Device is rinsed with pure water, it is believed that the concentration of magnesium ion and exports institute in demister entrance and demister in atomization system
The concentration of magnesium ion is equal in the drop of carrying, by magnesium ion compleximetry, to magnesium ion mass concentration in atomization system
It measures the magnesium ion mass concentration carried with demister entrance and demister exit gas in drop to measure, can be counted by formula
The mass concentration of drop in gas is calculated, and then calculates the demisting efficiency of demister；It is calculated in demister first with formula (1)
Microfilter after outlet sampling rinses magnesium ion content in filtrate：
In formula：
M1The content of magnesium ion, mol in-flushing filtrate；
25：- liquid moves pipe liquid relief 25ml；
V0Total filtrate volume after-probe tube and microfilter flushing, mL；
V1The volume of-titration magnesium ion consumption EDTA standard solution, mL；
c1- EDTA marks the actual concentrations of solution, mol.
Separately a new microfilter is taken to make blank sample, the content for measuring magnesium ion is M0, mol.Then it is counted according to formula (2)
It calculates demister exit gas and carries drop amount：
In formula：
M0The content of magnesium ion, mol are measured in-microfilter blank sample；
M1The content of magnesium ion, mol in-flushing filtrate；
c2Magnesium ion content concentration, mol/L in-spraying liquid；
ρ1The density of-spraying liquid, kg/m3。
Using the microfilter after the processing demister entrance sampling of same method, obtains demister inlet gas and carry liquid
Drop amount mEntrance, then demister demisting efficiency η is according to formula (3) calculating：
The mist droplet particle size that demister entrance and demister are exported using spraying laser particle size analyzer mating computer software into
Row statistical analysis obtains median, taper end grain size and butt end grain size therein.
It is a kind of based on above-mentioned wet method fume desulfurizing system demister performance test experiment the present invention also aims to provide
A kind of wet method fume desulfurizing system demister performance test Cold simulating test method of system, this method successively according to the following steps into
Row：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；
Enough normal-temperature waters are added into metering water tank by feed pipe, is not required to open metering heating water tanks power supply at this time, is added into water
Appropriate magnesium ion reaches the concentration of experimental design requirement；Air compressor is run, experimental pressure is set and carries out high pressure gas storage
It is standby；Computer and spraying laser particle size analyzer are finally opened, software kit is opened, is carried out after regulating mist droplet particle size testing background
Instrument preheats.
Second step is demister system moistening step：It is first turned on induced draught system power supply, is become by adjusting Frequency Converter Control
Frequency motor speed, and then air inducing fan delivery is adjusted, it monitors whether to reach in experimentation in real time by Pitot tube measuring system
The predetermined initial linear speed of demister, and record the pressure drop between demister entrance at this time and demister outlet；Then atomization is opened
The regulating valve of system simultaneously runs screw pump, controls water flow and high pressure air flow by regulating valve, reaches requirement of experiment
Liquid load value and atomizing effect, and pass through laser particle size analyzer real time on-line monitoring demister entrance mist droplet particle size value of spraying
Whether reach requirement of experiment, after aforesaid operations are adjusted to requirement of experiment, keeps experimental system present situation to run 5 minutes, in this process
In make experimental system pipeline complete wetting.
Third step is DATA REASONING step：Experimental design requirement, based on the stable state of second step,
The measurement that spraying laser particle size analyzer completes demister entrance and demister outlet mist droplet particle size, note are controlled by computer software
The record stabilization data that Pitot tube measuring system monitors in real time at this time；In addition, opening magnesium ion isokinetic sampling's system power supply, start pair
Demister exit carries out isokinetic sampling and passes through flow-rate adjustment valve regulation sampling conduit by motor drive vacuum pump work
Interior linear speed is equal to linear speed in demister, keeps stable operation 20 minutes, then with the same side of magnesium ion isokinetic sampling's system
Method carries out isokinetic sampling to demister inlet.
Then repeat a kind of four steps in wet method fume desulfurizing system demister performance test Thermal-state test method and
5th step.
Preferably, the form of demister can need specific setting according to experiment.
Preferably, the liquid of atomization system can be water or lime slurry.
Beneficial effects of the present invention
A kind of wet method fume desulfurizing system demister performance test experimental system of the present invention is structurally consummate, and function is integrated
Change, can be able to be Suresh Kumar, such as baffle plate demister, rotational flow plate defroster and bundled tube to the demister of diversified forms
Demister meets the different experiments research requirement for realizing Thermal-state test and Cold simulating test.
A kind of wet method fume desulfurizing system demister performance test experimental method operating system of the present invention, utmostly
Realize the goodness of fit of experimental situation and wet method fume desulfurizing system demister actual operating mode, experimental data measurement method rule in ground
Generalized, data are accurate and reliable.
Description of the drawings
Fig. 1 is a kind of specific reality of wet method fume desulfurizing system demister performance test experimental system provided by the present invention
Apply the structure principle chart of mode.
In figure：1. motor, 2. air compressors, 3. high pressure buffer gas tanks, 4. air dryers, 5. regulating valves, 6.
Feed pipe, 7. metering water tanks, 8. thermometers, 9. screw pumps, 10. regulating valves, 11. flowmeters, 12. two-fluid spray nozzles, 13. temperature
Meter, 14. dust-collecting buckets, 15. organic glass encapsulation cylinders, 16. computers, 17. protection wind turbine gravity separators, 18. regulating valves, 19.
Air-introduced machine, 20. adjustable frequency motors, 21. frequency converters, 22. spraying laser particle size analyzers, the outlet of 23. demisters, 24. demisters,
25. demister entrance, 26. spraying laser particle size analyzers, 27. Pitot tube measuring systems, 28. heaters, 29. woven fabric dimensional filters
Device, 30. thermometers, 31. flowmeters, 32. flow control valves, 33. vacuum pumps, 34. motor.
Specific implementation mode
Direction shown in arrow is the flow direction of fluid at this in Fig. 1.
Following will be combined with the drawings in the embodiments of the present invention 1, is clearly and completely retouched to the technical solution in embodiment
State, a kind of wet method fume desulfurizing system demister performance test experimental system include atomization system, demister system, induced draught system,
Mist droplet particle size measuring system, magnesium ion isokinetic sampling system, Pitot tube measuring system 27.
The atomization system includes motor 1, air compressor 2, high pressure buffer gas tank 3, air dryer 4, adjusts
Valve 5, feed pipe 6, metering water tank 7, thermometer 8, screw pump 9, regulating valve 10, flowmeter 11, two-fluid spray nozzle 12, motor 1
Coordinate as driving device and air compressor 2, air compressor 2, high pressure buffer gas tank 3, air dryer 4, regulating valve 5
It is sequentially connected with by high-pressure air pipe along high pressure gas conveying direction with two-fluid spray nozzle 12；Feed pipe 6 is connected to metering water tank 7,
Thermometer 8 is placed in 7 middle part of metering water tank, metering water tank 7, screw pump 9,12 edge of regulating valve 10, flowmeter 11 and two-fluid spray nozzle
Flow conveying direction is sequentially connected with by water-supply-pipe, and the pressure-air measured in water and high pressure buffer gas tank 3 in water tank 7 exists
Converge at two-fluid spray nozzle 12, high-efficient atomizing is realized using the special cavity body structure inside two-fluid spray nozzle 12.
The demister system includes thermometer 13, dust-collecting bucket 14, organic glass encapsulation cylinder 15, demister outlet 23, demisting
Device 24, demister entrance 25, organic glass encapsulation cylinder 15 be used as main body frame, respectively with atomization system, demister system, air inducing system
System, mist droplet particle size measuring system, magnesium ion isokinetic sampling system are connected with Pitot tube measuring system 27, and demister 24 is with demister
Entrance 25 is under, demister outlet 23 is placed in upper mode inside organic glass encapsulation cylinder 15, and dust-collecting bucket 14 is placed in organic glass
15 bottom of glass encapsulation cylinder, the droplet separated for collecting demister 24, thermometer 13 are placed in 25 lower section of demister entrance, use
The droplet temperature at measurement demister entrance 25.
The induced draught system includes protection wind turbine gravity separator 17, regulating valve 18, air-introduced machine 19, adjustable frequency motor
20, frequency converter 21, protection wind turbine gravity separator 17, regulating valve 18, air-introduced machine 19 and adjustable frequency motor 20 are defeated outside gas
Direction is sequentially connected with by pipeline, and frequency converter 21 is connected by cable with variable-frequency motor 20 as controller.
The mist droplet particle size measuring system includes computer 16, spraying laser particle size analyzer 22 and spraying laser particle size analysis
Instrument 26, spraying laser particle size analyzer 22 are placed at demister outlet 23, and spraying laser particle size analyzer 26 is placed in demister and enters
At mouth 25, for measuring the mist droplet particle size at demister entrance 25 and demister outlet 23, and pass through data line and computer respectively
16 connections.
The magnesium ion isokinetic sampling system include heater 28, superfluorescent fiber filter 29, thermometer 30, flowmeter 31,
Flow control valve 32, vacuum pump 33, motor 34, heater 28, superfluorescent fiber filter 29, flowmeter 31, flow control valve 32
It is sequentially connected with by pipeline along pumping direction with vacuum pump 33, thermometer 30 is placed in 29 rear portion of superfluorescent fiber filter, motor 34
Vacuum pump 33 is driven to work by V belt translation.
The Pitot tube measuring system 27 is connect with demister system and induced draught system respectively, for measuring 24 interior lines of demister
Pressure drop in speed, air inducing pipeline between linear speed and demister entrance 25 and demister outlet 23.
A kind of demisting course of work of wet method fume desulfurizing system demister performance test experimental system：
In induced draught system under the operation of air-introduced machine 19, after sealing piping connection, shape in organic glass encapsulation cylinder 15
At ascending air from bottom to top, the flow of flue gas state in wet flue gas desulfurization tower is simulated, is formed by two-fluid spray nozzle 12
Droplet forms biphase gas and liquid flow under the rolling action of ascending air, enters gas-liquid inside demister 24 from demister entrance 25
Droplet in two phase flow removes, and contains the air-flow for failing to remove droplet on a small quantity at this time and enters protection through pipeline from demister outlet 23
Wind turbine is further removed the remaining droplet in air-flow, is prevented droplet from corroding 19 inner vanes of air-introduced machine in gravity separator 17,
Then it will be arranged outside clean air-flow by air-introduced machine 19 through piping, complete entire demisting process.
Invention additionally discloses a kind of one kind based on above-mentioned wet method fume desulfurizing system demister performance test experimental system
Wet method fume desulfurizing system demister performance test Thermal-state test method, carries out according to the following steps successively：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；
By feed pipe 6 to metering water tank 7 in enough water is added, then open metering 7 heating power supply of water tank, set atomization temperature into
Row heating, after reaching set temperature, the concentration that appropriate magnesium ion reaches experimental design requirement is added into water；Run air compression
Machine 2 sets experimental pressure and carries out high pressure gas deposit；Finally open computer 16, spraying laser particle size analyzer 22 and spraying
Laser particle size analyzer 26 opens software kit, and instrument preheating is carried out after regulating mist droplet particle size testing background.
Second step is demister system moistening step：It is first turned on induced draught system power supply, is controlled by adjusting frequency converter 21
20 rotating speed of adjustable frequency motor, and then 19 air quantity of air-introduced machine is adjusted, it monitors whether to reach real in real time by Pitot tube measuring system 27
The predetermined initial linear speed of demister 24 during testing, and record the pressure between demister entrance 25 at this time and demister outlet 23
Drop；Then it opens the regulating valve 10 of atomization system and runs screw pump 9, flow is controlled by regulating valve 10 and regulating valve 5 respectively
Flow and high pressure air flow reach the liquid load value and atomizing effect of requirement of experiment, and pass through laser particle size analysis of spraying
Whether 26 real time on-line monitoring demister entrance of instrument, 25 mist droplet particle size value reaches requirement of experiment, and aforesaid operations are adjusted to requirement of experiment
Afterwards, it keeps experimental system present situation to run 5 minutes, makes in the temperature value and demister system that the thermometer 8 in atomization system measures
The temperature value that thermometer 13 measures is equal, and makes experimental system pipeline complete wetting in the process.
Third step is DATA REASONING step：Experimental design requirement, based on the stable state of second step,
Spraying laser particle size analyzer 26 is controlled by 16 software of computer and spraying laser particle size analyzer 22 is respectively completed demister and enters
Mouth 25 and demister export the measurement of 23 mist droplet particle sizes, the record stabilization data that Pitot tube measuring system 27 monitors in real time at this time；
In addition, opening magnesium ion isokinetic sampling's system power supply, start, to carrying out isokinetic sampling at demister outlet 23, to pass through motor 34
Vacuum pump 33 is driven to work, adjusting linear speed in sampling conduit by flow control valve 32 is equal to linear speed in demister 24, and passes through
Heater 28 ensures that sample temperature is consistent with experimental system set temperature, stable operation 20 minutes is kept, then with magnesium ion etc.
Fast sampling system is with same method to carrying out isokinetic sampling at demister entrance 25.
Four steps is experimental facilities reconstitution steps：After the completion of DATA REASONING needed for experiment, magnesium ion out of service first
Isokinetic sampling's system, then the spraying laser particle size analyzer 22 in mist droplet particle size measuring system out of service, spraying swash successively
Light Particle Size Analyzer 26, atomization system and induced draught system；Finally all regulating valves 5, regulating valve 10, flow control valve are closed successively
32 and regulating valve 18, complete primary complete fog removal performance test experiments.
5th step is that demisting efficiency calculates step, takes out the microfilter in magnesium ion isokinetic sampling's system first
29, it is rinsed with pure water, it is believed that the concentration of magnesium ion and exported in demister entrance 25 and demister in atomization system
The concentration of magnesium ion is equal in drop entrained by 23, by magnesium ion compleximetry, to magnesium ion quality in atomization system
Measurement of concetration and demister entrance 25 and demister export the magnesium ion mass concentration that 23 gases carry in drop and measure, and pass through
Formula can calculate the mass concentration of drop in gas, and then calculate the demisting efficiency of demister 24；It is calculated first with formula (1)
The microfilter 29 gone out after 23 sampling of demister outlet rinses magnesium ion content in filtrate：
In formula：
M1The content of magnesium ion, mol in-flushing filtrate；
25：- liquid moves pipe liquid relief 25ml；
V0Total filtrate volume after-probe tube and the flushing of microfilter 29, mL；
V1The volume of-titration magnesium ion consumption EDTA standard solution, mL；
c1- EDTA marks the actual concentrations of solution, mol.
Separately a new microfilter 29 is taken to make blank sample, the content for measuring magnesium ion is M0, mol.Then according to formula (2)
It calculates demister and exports 23 gases carrying drop amount：
In formula：
M0The content of magnesium ion, mol are measured in 29 blank sample of-microfilter；
M1The content of magnesium ion, mol in-flushing filtrate；
c2Magnesium ion content concentration, mol/L in-spraying liquid；
ρ1The density of-spraying liquid, kg/m3。
Microfilter 29 after being sampled using same method processing demister entrance 25, obtains 25 gas of demister entrance
Carry drop amount mEntrance, then 24 demisting efficiency η of demister is according to formula (3) calculating：
Demister is entered using spraying laser particle size analyzer 26 and mating 16 software of computer of laser particle size analyzer 22 of spraying
Mouthfuls 25 and the mist droplet particle size of demister outlet 23 for statistical analysis obtain median, taper end grain size and butt end grain therein
Diameter.
One that the invention also discloses a kind of based on above-mentioned wet method fume desulfurizing system demister performance test experimental system
Kind wet method fume desulfurizing system demister performance test Cold simulating test method, carries out according to the following steps successively：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；
Enough normal-temperature waters are added into metering water tank 7 by feed pipe 6, is not required to open metering 7 heating power supply of water tank at this time, add into water
Enter the concentration that appropriate magnesium ion reaches experimental design requirement；Air compressor 2 is run, experimental pressure is set and carries out high pressure gas
Deposit；Computer 16 and spraying laser particle size analyzer 22 and spraying laser particle size analyzer 26 are finally opened, software kit is opened,
Instrument preheating is carried out after regulating mist droplet particle size testing background.
Second step is demister system moistening step：It is first turned on induced draught system power supply, is controlled by adjusting frequency converter 21
20 rotating speed of adjustable frequency motor, and then 19 air quantity of air-introduced machine is adjusted, it monitors whether to reach real in real time by Pitot tube measuring system 27
The predetermined initial linear speed of demister 24 during testing, and record the pressure between demister entrance 25 at this time and demister outlet 23
Drop；Then it opens the regulating valve 5 of atomization system and regulating valve 10 and runs screw pump 9, pass through regulating valve 10 and regulating valve 5 is distinguished
Water flow and high pressure air flow are controlled, reaches the liquid load value and atomizing effect of requirement of experiment, and pass through laser of spraying
Whether 26 real time on-line monitoring demister entrance of Particle Size Analyzer, 25 mist droplet particle size value reaches requirement of experiment, and aforesaid operations are adjusted to
After requirement of experiment, keeps experimental system present situation to run 5 minutes, make experimental system pipeline complete wetting in the process.
Third step is DATA REASONING step：Experimental design requirement, based on the stable state of second step,
Spraying laser particle size analyzer 26 is controlled by 16 software of computer and spraying laser particle size analyzer 22 completes demister entrance 25
The measurement of 23 mist droplet particle sizes, the record stabilization data that Pitot tube measuring system 27 monitors in real time at this time are exported with demister；In addition,
It is pre-recorded and open magnesium ion isokinetic sampling's system power supply, it drives vacuum pump 33 to work by motor 34, passes through flow tune
It saves linear speed in the adjusting sampling conduit of valve 32 and is equal to linear speed in demister 24, stable operation 20 minutes is kept, then with magnesium ion etc.
Fast sampling system is with same method to carrying out isokinetic sampling at demister entrance 25.
Then repeat a kind of four steps in wet method fume desulfurizing system demister performance test Thermal-state test method and
5th step.
Preferably, the form of demister 24 can need specific setting according to experiment.
Preferably, the liquid of atomization system can be water or lime slurry.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (3)
1. a kind of wet method fume desulfurizing system demister performance test experimental system, it is characterised in that：Including atomization system, demisting
System, induced draught system, mist droplet particle size measuring system, magnesium ion isokinetic sampling system, Pitot tube measuring system；
The atomization system include motor, air compressor, high pressure buffer gas tank, air dryer, 2 regulating valves, to
Water pipe, metering water tank, thermometer, screw pump, flowmeter, two-fluid spray nozzle, motor is as driving device and air compressor
Cooperation, air compressor, high pressure buffer gas tank, air dryer, regulating valve and two-fluid spray nozzle are along high pressure gas conveying side
It is sequentially connected with to by high-pressure air pipe；Feed pipe is connected to metering water tank, and thermometer is placed in the middle part of metering water tank, metering water tank,
Screw pump, regulating valve, flowmeter and two-fluid spray nozzle are sequentially connected with along flow conveying direction by water-supply-pipe；
The demister system includes that thermometer, dust-collecting bucket, organic glass encapsulation cylinder, demister outlet, demister, demister enter
Mouthful, organic glass encapsulation cylinder measures system with atomization system, demister system, induced draught system, mist droplet particle size respectively as main body frame
System, magnesium ion isokinetic sampling system be connected with Pitot tube measuring system, demister with demister entrance under, demister export exist
On mode be placed in inside organic glass encapsulation cylinder, dust-collecting bucket is placed in organic glass encapsulation cylinder bottom, for collecting demister point
From the droplet to get off, thermometer is placed in below demister entrance, for measuring demister inlet droplet temperature；
The induced draught system includes protection wind turbine gravity separator, regulating valve, air-introduced machine, adjustable frequency motor, frequency converter, protection
Wind turbine gravity separator, regulating valve, air-introduced machine and the adjustable frequency motor defeated direction outside gas are sequentially connected with by pipeline, frequency conversion
Device is connected by cable with variable-frequency motor as controller；
The mist droplet particle size measuring system includes computer, 2 spraying laser particle size analyzers, 2 spraying laser particle size analyzers
It is respectively placed in demister entrance and demister exit, the mist droplet particle size for measuring demister entrance and demister exit,
And it is connect respectively with computer by data line；
The magnesium ion isokinetic sampling system includes heater, superfluorescent fiber filter, thermometer, flowmeter, flow control valve, true
Sky pump, motor, heater, superfluorescent fiber filter, flowmeter, flow control valve and vacuum pump are suitable by pipeline along pumping direction
Secondary connection, thermometer are placed in superfluorescent fiber filter rear portion, and motor drives vacuum pump work by V belt translation；
The Pitot tube measuring system is connect with demister system and induced draught system respectively, for measuring linear speed in demister, air inducing
Pressure drop in pipeline between linear speed and the outlet of demister entrance and demister.
2. a kind of wet method fume desulfurizing system demister performance test experimental system according to claim 1 carries out a kind of wet
Method flue gas desulphurization system demister performance test Thermal-state test method, it is characterised in that carry out according to the following steps successively：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；Pass through
Enough water is added into metering water tank in feed pipe, then opens metering heating water tanks power supply, sets atomization temperature and heated,
After reaching set temperature, the concentration that appropriate magnesium ion reaches experimental design requirement is added into water；Run air compressor, setting
Good experimental pressure carries out high pressure gas deposit；Computer and spraying laser particle size analyzer are finally opened, software kit is opened, is adjusted
Instrument preheating is carried out after good mist droplet particle size testing background；
Second step is demister system moistening step：It is first turned on induced draught system power supply, by adjusting Frequency Converter Control variable-frequency electric
Motivation rotating speed, and then air inducing fan delivery is adjusted, it monitors whether to reach demisting in experimentation in real time by Pitot tube measuring system
The predetermined initial linear speed of device, and record the pressure drop between demister entrance at this time and demister outlet；Then atomization system is opened
Regulating valve and run screw pump, water flow and high pressure air flow are controlled by regulating valve, reach the liquid of requirement of experiment
Load value and atomizing effect, and by spray laser particle size analyzer real time on-line monitoring demister entrance mist droplet particle size value whether
Reach requirement of experiment, after aforesaid operations are adjusted to requirement of experiment, keep experimental system present situation to run 5 minutes, make in atomization system
Thermometer measure temperature value and demister system in thermometer measure temperature value it is equal, and make the experiment be in the process
Road complete wetting under the overall leadership；
Third step is DATA REASONING step：Experimental design requirement is passed through based on the stable state of second step
Computer software control spraying laser particle size analyzer completes the measurement of demister entrance and demister outlet mist droplet particle size, records this
When the stabilization data that monitor in real time of Pitot tube measuring system；In addition, opening magnesium ion isokinetic sampling's system power supply, start to demisting
Device exit carries out isokinetic sampling and passes through flow-rate adjustment valve regulation sampling conduit interior lines by motor drive vacuum pump work
Speed is equal to linear speed in demister, and ensures that sample temperature is consistent with experimental system set temperature by heater, keeps stablizing fortune
Row 20 minutes, then carries out isokinetic sampling with same method with magnesium ion isokinetic sampling system to demister inlet；
Four steps is experimental facilities reconstitution steps：After the completion of DATA REASONING needed for experiment, magnesium ion constant speed out of service first
Then sampling system the spraying laser particle size analyzer in mist droplet particle size measuring system out of service, atomization system and is drawn successively
Wind system；It is last to close all regulating valves successively, complete primary complete fog removal performance test experiments；
5th step is that demisting efficiency calculates step, takes out the microfilter in magnesium ion isokinetic sampling's system first, uses
Pure water is rinsed, it is believed that the concentration of magnesium ion and entrained in demister entrance and demister outlet in atomization system
The concentration of magnesium ion is equal in drop, by magnesium ion compleximetry, magnesium ion mass concentration in atomization system is measured and
Demister entrance and demister exit gas carry the magnesium ion mass concentration in drop and measure, and outlet can be calculated by formula
The mass concentration of drop in body, and then calculate the demisting efficiency of demister.
3. a kind of wet method fume desulfurizing system demister performance test experimental system according to claim 1 carries out a kind of wet
Method flue gas desulphurization system demister performance test Cold simulating test method, it is characterised in that carry out according to the following steps successively：
First step is test preparation process：First check for the pipeline leakproofness and circuit reliability of a whole set of experimental system；Pass through
Enough normal-temperature waters are added into metering water tank in feed pipe, are not required to open metering heating water tanks power supply at this time, are added into water appropriate
Magnesium ion reaches the concentration of experimental design requirement；Air compressor is run, experimental pressure is set and carries out high pressure gas deposit；Most
Computer and spraying laser particle size analyzer are opened afterwards, open software kit, instrument is carried out after regulating mist droplet particle size testing background
Preheating；
Second step is demister system moistening step：It is first turned on induced draught system power supply, by adjusting Frequency Converter Control variable-frequency electric
Motivation rotating speed, and then air inducing fan delivery is adjusted, it monitors whether to reach demisting in experimentation in real time by Pitot tube measuring system
The predetermined initial linear speed of device, and record the pressure drop between demister entrance at this time and demister outlet；Then atomization system is opened
Regulating valve and run screw pump, water flow and high pressure air flow are controlled by regulating valve, reach the liquid of requirement of experiment
Load value and atomizing effect, and by spray laser particle size analyzer real time on-line monitoring demister entrance mist droplet particle size value whether
Reach requirement of experiment, after aforesaid operations are adjusted to requirement of experiment, keep experimental system present situation to run 5 minutes, make in the process
Experimental system pipeline complete wetting；
Third step is DATA REASONING step：Experimental design requirement is passed through based on the stable state of second step
Computer software control spraying laser particle size analyzer completes the measurement of demister entrance and demister outlet mist droplet particle size, records this
When the stabilization data that monitor in real time of Pitot tube measuring system；In addition, opening magnesium ion isokinetic sampling's system power supply, start to demisting
Device exit carries out isokinetic sampling and passes through flow-rate adjustment valve regulation sampling conduit interior lines by motor drive vacuum pump work
Speed is equal to linear speed in demister, stable operation 20 minutes is kept, then in the same method pair of magnesium ion isokinetic sampling system
Demister inlet carries out isokinetic sampling；
Four steps and the 5th step in a kind of wet method fume desulfurizing system demister performance test Thermal-state test method of repetition,
Complete primary complete Cold simulating test.
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| CN110836766A (en) * | 2019-10-28 | 2020-02-25 | 江苏科技大学 | Detection device and detection method for double-fluid nozzle |
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