CN113786724A - Simulation dust removal SO removal3Experimental device and method - Google Patents
Simulation dust removal SO removal3Experimental device and method Download PDFInfo
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- CN113786724A CN113786724A CN202111216145.1A CN202111216145A CN113786724A CN 113786724 A CN113786724 A CN 113786724A CN 202111216145 A CN202111216145 A CN 202111216145A CN 113786724 A CN113786724 A CN 113786724A
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- 239000000428 dust Substances 0.000 title claims abstract description 265
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004088 simulation Methods 0.000 title claims description 28
- 239000003546 flue gas Substances 0.000 claims abstract description 52
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000002253 acid Substances 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims description 34
- 238000002474 experimental method Methods 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 13
- 230000002195 synergetic effect Effects 0.000 claims description 4
- 238000003795 desorption Methods 0.000 claims description 3
- 239000012716 precipitator Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 16
- 238000011160 research Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 22
- 230000001276 controlling effect Effects 0.000 description 15
- 239000012717 electrostatic precipitator Substances 0.000 description 13
- 230000008676 import Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012719 wet electrostatic precipitator Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention discloses a method for removing SO by simulating dust removal3The experimental device comprises a feeding system, an acid adding system, a heating system, a humidifying system, a dry electric dust remover and a wet electric dust remover; the dry electric dust remover and the wet electric dust remover are arranged on the flue, and the dry electric dust remover is positioned at the upstream of the wet electric dust remover; the feeding system is used for providing dust for the dry electric dust remover and the wet electric dust remover; the acid adding system is used for providing SO for the dry electric dust remover and the wet electric dust remover3A gas; the heating system is used for adjusting the temperature of the flue gas in the flue; the humidifying system is used for adjusting the dry typeThe humidity in the electric dust collector and the humidity in the wet-type electric dust collector. The experimental device can stably and uniformly simulate different actual flue gas environments and research the SO by low-low temperature electric dust removal and wet-type electric dust removal3The removal of the test paper provides a foundation, the use is convenient, and the accuracy of the test result is high.
Description
Technical Field
The invention relates to the technical field of dust removal, in particular to a method for removing SO by simulating dust removal3The experimental apparatus and method of (1).
Background
Not only a large amount of SO is generated in the combustion process of the furnace chamber of the coal-fired power plant2Also, a small amount of SO is formed3。SO3Fine particles (PM2.5) can be directly formed by discharging into ambient air, and the haze formation in a mesoscale region is obviously influenced. In SO2After the emission is strictly controlled, SO3The generation and emission control gradually become the focus of attention in the field of atmospheric pollution control of thermal power plants in China.
At present, coal-fired power plants are directed to SO3The removal does not have an independent removal device, and the main technical route adopted is the low-low temperature electric precipitation, the wet desulphurization and the wet electric precipitation to remove SO in a coordinated manner3Wherein, low-low temperature electric precipitation and wet-type electric precipitation are used for SO3The removal of the powder is often used as an assessment index for assessing the coordination of low-low temperature electric precipitation and wet electric precipitation to remove SO3The removal rate is mainly that the condensation method is controlled to carry out on-site low-temperature electric precipitation and wet-type electric precipitation on the SO inlet and the SO outlet3Concentrations were used for experimental data acquisition and study analysis. The low-temperature and low-temperature electric precipitation is a general term in the industry, the temperature range is usually 80-90 degrees, and the temperature can be properly adjusted according to the actual application requirements.
Low-low temperature electric precipitation and wet-type electric precipitation SO on-site test by adopting control condensation method3Concentration to study the dust removing effectSimultaneously remove SO3The method is limited by the production load of a field unit, and has the problems of fluctuation of operation load, change of coal types, poor representativeness of test points, long test period, large workload, difficult transportation and storage of samples and the like, SO that SO is influenced3And testing the accuracy of the result.
Disclosure of Invention
The invention aims to provide a method for removing SO by simulating dust removal3The experimental device and the method can stably and uniformly simulate different actual flue gas environments and research SO by low-low temperature electric precipitation and wet-type electric precipitation3The removal of the test paper provides a foundation, the use is convenient, and the accuracy of the test result is high.
In order to solve the technical problem, the invention provides a method for removing SO by simulating dust removal3The experimental device comprises a feeding system, an acid adding system, a heating system, a humidifying system, a dry electric dust remover and a wet electric dust remover; the dry electric dust remover and the wet electric dust remover are arranged on the flue, and the dry electric dust remover is positioned at the upstream of the wet electric dust remover;
the feeding system is used for providing dust for the dry electric dust remover and the wet electric dust remover; the acid adding system is used for providing SO for the dry electric dust remover and the wet electric dust remover3A gas; the heating system is used for adjusting the temperature of the flue gas in the flue; the humidifying system is used for adjusting the humidity in the dry-type electric dust remover and the humidity in the wet-type electric dust remover.
Simulated dust removal SO removal as described above3The experimental device also comprises SO3A monitoring instrument for monitoring SO at the inlet and outlet of the dry electric precipitator3Concentration, and SO at inlet and outlet of wet electric dust collector3And (4) concentration.
Simulated dust removal SO removal as described above3The experimental device also comprises a control system, which is used for controlling the feeding amount of the feeding system and the air supply amount of the acid adding system, and is also used for controlling the heating system, the humidifying system, the dry type electric dust remover and the working state of the wet type electric dust remover.
Simulated dust removal SO removal as described above3The experimental device is characterized in that a draught fan is arranged on the flue and is positioned at the downstream of the wet electric dust collector.
Simulated dust removal SO removal as described above3The experimental device comprises a flue, wherein a recovery device is arranged on the flue and is positioned at the downstream of an induced draft fan and used for recovering acid gas and/or dust of flue gas in the flue.
Simulated dust removal SO removal as described above3The experimental device of (2), the feed system includes air compressor machine, diluter and batcher, the air compressor machine with the diluter is connected, the batcher be used for to the diluter carries the dust, the diluter will according to the proportion of settlement under the effect of air compressor machine the dust divide into two the tunnel, carry respectively extremely dry-type electrostatic precipitator's import with wet-type electrostatic precipitator's import.
Simulated dust removal SO removal as described above3The experimental device of (1), the diluter with connecting line between dry-type electrostatic precipitator's the import still with recovery unit connects, the diluter with dry-type electrostatic precipitator with be equipped with the valve on recovery unit's the connecting line, in order to control one way dust of diluter is carried extremely dry-type electrostatic precipitator perhaps carries extremely recovery unit.
Simulated dust removal SO removal as described above3The acid adding system comprises SO2Standard gas source and SO3Generating means of said SO2A source of a standard gas and the SO3The generating devices are connected, a valve and a flowmeter are arranged on the connecting pipeline, and the SO3The outlet of the generating device is connected with the inlet of the dry electric dust remover and the inlet of the wet electric dust remover, and a valve and a flowmeter are arranged on the two connecting pipelines.
Simulated dust removal SO removal as described above3The experimental device comprises a heating system, a flue and a dry-type electric dust collector, wherein the heating system is an air heater which is arranged on the flue and is positioned at the upstream of the dry-type electric dust collector.
Die as described aboveRemoval of SO by dust removal3The experimental device, the humidification system includes steam generator, steam generator's export with dry-type electrostatic precipitator's import with wet-type electrostatic precipitator's import all connects, and all is equipped with valve and flowmeter on two connecting pipelines.
The invention also provides a method for removing SO by simulating dust removal3The experimental method comprises removing SO by dry electric precipitation based on any one of the experimental devices3Simulation method of SO removal by dry electric dust removal3The simulation method comprises the following steps:
controlling the high voltage of the wet electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the wet electric dust remover, and cutting off a passage from the humidifying system to the wet electric dust remover;
the flow velocity of the flue gas in the flue is controlled to be more than 6m/s, the temperature of the flue gas is controlled to be more than the acid dew point temperature, the humidity of the flue gas is 3-8%, and the concentration of dust is more than 5g/m3，SO3The concentration is 10-150 mg/m3；
Monitoring SO at inlet and outlet of dry electric dust collector3And (4) concentration.
Simulated dust removal SO removal as described above3The experimental method also comprises the synergistic removal of SO by the dry electric precipitation and the low-low temperature electric precipitation3Simulation method, in which dry-type electric precipitation and low-low temperature electric precipitation are used for removing SO in a synergistic manner3The simulation method comprises the following steps:
controlling the high voltage of the wet electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the wet electric dust remover, and cutting off a passage from the humidifying system to the wet electric dust remover;
controlling the flow velocity of the flue gas in the flue to be more than 6m/s, the temperature of the flue gas to be less than the acid dew point temperature, the humidity of the flue gas to be 3-8 percent and the concentration of dust to be more than 5g/m3，SO3The concentration is 10-150 mg/m3；
Monitoring SO at inlet and outlet of dry electric dust collector3And (4) concentration.
Simulated dust removal SO removal as described above3The experimental method of (a) was carried out,also comprises wet-type electric precipitation SO removal3Simulation method, wet-type electric dust removal SO3The simulation method comprises the following steps:
controlling the high voltage of the dry-type electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the dry-type electric dust remover, and cutting off a passage from the humidifying system to the dry-type electric dust remover;
controlling the flow velocity of the flue gas in the flue to be more than 6m/s, the temperature of the flue gas to be less than 60 ℃, the humidity of the flue gas to be saturated humidity of the flue gas, and the concentration of dust to be less than 50mg/m3，SO3The concentration is less than 20mg/m3；
Monitoring SO at inlet and outlet of wet electric dust collector3And (4) concentration.
The experimental device and method provided by the invention are used for simulating removal of SO3Through the mutual cooperation of the feeding system, the acid adding system, the heating system and the humidifying system, the flue gas environment with different dust concentrations, acidity, temperatures and humidity can be generated in the experimental device, and the dry-type electric dust remover can be simulated to remove SO by controlling the working states of the dry-type electric dust remover and the wet-type electric dust remover3Dry-type electric dust removal and low-low temperature electric dust removal are in coordination with removal of SO3And wet-type electric dust removal SO3The experimental device can stably provide actual flue gas environment, can provide different flue gas environments, avoids being influenced by production load, load fluctuation, coal type change and the like of a field unit, is simple and convenient to operate, short in test period and small in workload, and can ensure SO3And testing the accuracy of the result.
Drawings
FIG. 1 is a diagram of the simulated dust removal and SO removal provided by the present invention3Schematic structural diagram of an embodiment of the experimental apparatus of (1).
Description of reference numerals:
the device comprises a flue 10, a dry electric dust remover 11, a wet electric dust remover 12, an induced draft fan 13 and a recovery device 14;
a feeding system 20, a feeder 21, an air compressor 22, a diluter 23;
an air heater 30;
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to FIG. 1, FIG. 1 shows a simulated dust removal SO removal system provided by the present invention3Schematic structural diagram of an embodiment of the experimental apparatus of (1).
In this example, SO removal was simulated by dust removal3The experimental device comprises a flue 10, wherein a dry electric dust collector 11 and a wet electric dust collector 12 are arranged on the flue 10, the dry electric dust collector 11 is positioned at the upstream of the wet electric dust collector 12, namely the dry electric dust collector 11 is arranged close to the inlet end of the flue 10, and the wet electric dust collector 12 is arranged close to the outlet end of the flue 10. Specifically, the outlet of the dry electric dust collector 11 is connected to the inlet of the wet electric dust collector 12, and it can be understood that the flue gas flowing through the flue 10 flows through the dry electric dust collector 11 first and then flows through the wet electric dust collector 12.
The experimental device further comprises a feeding system 20, a heating system, an acid adding system 40 and a humidifying system, wherein the feeding system 20 is used for providing dust for the dry type electric dust remover 11 and the wet type electric dust remover 12, the heating system is used for adjusting the temperature of smoke in the flue 10, and the acid adding system 40 is used for providing SO for the dry type electric dust remover 11 and the wet type electric dust remover 123The gas humidification system is used for adjusting the humidity in the dry electric dust collector 11 and the humidity in the wet electric dust collector 12.
The experimental device is used for simulating removal of SO3Through the mutual cooperation of the feeding system 20, the acid adding system 40, the heating system and the humidifying system, the flue gas environment with different dust concentrations, acidity, temperatures and humidity can be generated in the experimental device, and the dry-type electric dust remover SO can be simulated by controlling the working states of the dry-type electric dust remover 11 and the wet-type electric dust remover 123Dry-type electric dust removal and low-low temperature electric dust removal are in coordination with removal of SO3And wet-type electric dust removalSO3The experimental device can stably provide actual flue gas environment, can provide different flue gas environments, avoids being influenced by production load, load fluctuation, coal type change and the like of a field unit, is simple and convenient to operate, short in test period and small in workload, and can ensure SO3And testing the accuracy of the result.
The low-low temperature electric dust removal is a general term in the industry, the temperature range is usually 80-90 degrees, and the temperature range can be properly adjusted according to needs in an actual experiment. Among this experimental apparatus, realize low temperature effect of electrostatic precipitation through the temperature control to flue gas in the flue 10, it is different with using low temperature economizer among the aftertreatment system among the practical application, can simplify experimental apparatus's structure on the basis of realizing multiple desorption experiment.
In this embodiment, the experimental apparatus further includes SO3A monitoring instrument 70 for monitoring SO at the inlet and outlet of the dry electric dust collector 113Concentration, and SO at the inlet and outlet of the wet electric precipitator 123And (4) concentration.
In the illustrated embodiment, there is no other device in the flue portion between the outlet of the dry electric dust collector 11 and the inlet of the wet electric dust collector 12, and it is understood that the SO at the outlet of the dry electric dust collector 11 is not provided with any other device3Concentration and SO at the inlet of the wet electrostatic precipitator 123The concentrations are consistent, and the two positions are only required to be provided with a testing position between the dry electric dust collector 11 and the wet electric dust collector 12.
In the illustrated embodiment, one SO is used3Monitoring SO of instrument 70 for each test site3The concentration is monitored, in other embodiments, multiple SO's may be used3Monitoring instruments to test SO at each test site3And (4) concentration. The method is specifically set according to actual requirements.
The experimental device further comprises a control system 60, wherein the control system 60 is used for controlling the feeding amount of the feeding system 20 and the air supply amount of the acid adding system 40, and is also used for controlling the working states of the heating system, the humidifying system, the dry type electric dust remover 11 and the wet type electric dust remover 12.
In particular, according to the experimental requirementsThe control system 60 regulates the dust concentration of the flue gas formed in the flue 10 by regulating the feeding amount of the feeding system 20, and regulates the SO in the flue gas formed in the flue 10 by regulating the air supply amount of the acid adding system 403Concentration, which is used for adjusting the temperature and humidity of the flue gas formed in the flue 10 through controlling a heating system and a humidifying system; the control system 60 is mainly used for controlling the working states of the dry-type electric dust collector 11 and the wet-type electric dust collector 12 through high-voltage systems of the dry-type electric dust collector 11 and the wet-type electric dust collector 12, when the control system 60 controls the high voltage of the dry-type electric dust collector 11 to be in a closed state, the dry-type electric dust collector 11 only serves as a smoke circulation channel, namely, the dry-type electric dust collector 11 does not play a role, and when the control system 60 controls the high voltage of the wet-type electric dust collector 12 to be in a closed state, the wet-type electric dust collector 12 only serves as a smoke circulation channel, namely, the wet-type electric dust collector 12 does not play a role, so that different experimental modes are realized.
In this embodiment, the experimental apparatus is provided with the induced draft fan 13 on the flue 10, and the induced draft fan 13 is specifically arranged at the downstream of the wet-type electric dust collector 12 and is used for ensuring the stability of the air volume of the experimental apparatus during the experiment. The draught fan 13 can be made of glass fiber reinforced plastics and is controlled by frequency conversion, and the stability of air volume is guaranteed.
In this embodiment, the experimental device is provided with a recovery device 14 on the flue 10, and the recovery device 14 is located downstream of the induced draft fan 13, that is, the recovery device 14 is provided at the end of the flue 10, and is used for treating SO in flue gas2、SO3The acid gas may be neutralized and recovered, and the dust that is not collected may be recovered. Specifically, the recovery device 14 may contain an alkaline liquid.
As shown in fig. 1, the feeding system 20 of the experimental apparatus includes a feeder 21, an air compressor 22 (which may be abbreviated as an air compressor) and a diluter 23, where the feeder 21 is used to provide dust, the dust can be artificially added to the feeder 21, the type and amount of the dust can be provided according to experimental requirements, and the air compressor 22 is connected with the diluter 23. The feeder 21 is opened and then sends the dust to the diluter 23, the diluter 23 can divide the dust into two paths according to a set proportion under the action of the air compressor 22, one path of dust is conveyed to the inlet of the dry electric dust collector 11, and the other path of dust is conveyed to the inlet of the wet electric dust collector 12.
Generally, the two paths branched by the diluter 23 have different amounts of dust, and one path with a larger amount of dust is generally conveyed to the dry electric dust collector 11, and one path with a smaller amount of dust is conveyed to the wet electric dust collector 12. The dilution ratio of the dust by the diluter 23 can be adjusted according to actual needs.
The first export of diluter 23 and dry-type electrostatic precipitator 11's access connection can set up the valve on this connecting line, and the access connection of second export and wet-type electrostatic precipitator 12 also can set up the valve on this connecting line to convenient control. Wherein, the first export of diluter 23 also is connected with recovery unit 14, and the valve that sets up on first export and dry-type electrostatic precipitator 11 and recovery unit 14's the connecting pipeline can be the three-way valve, also can set up two independent valves, and when actual processing, if do not need dry-type electrostatic precipitator 11 work, the control of accessible relevant valve for the dust volume of the outflow of the first export of diluter 23 directly carries to recovery unit 14.
As shown in fig. 1, the heating system of the experimental apparatus includes an air heater 30 disposed on the flue 10, and the air heater 30 is located upstream of the dry electric dust collector 11 so as to control the temperature of the flue gas flowing to the dry electric dust collector 11 and the wet electric dust collector 12.
The acid addition system 40 of the experimental apparatus includes SO2A source of standard gas 41 and SO3Generating device 42, SO2 Standard gas source 41 and SO3The generating device 42 is connected, and a valve, a flowmeter and SO are arranged on the connecting pipeline3The generating device 42 has two outlets, the two outlets are respectively connected with the inlet of the dry electric dust collector 11 and the inlet of the wet electric dust collector 12, and the two connecting pipelines are provided with valves and flow meters. SO (SO)2Source of standard gas 41 to SO3The generating device 42 delivers SO2Gas SO as to be in SO3SO is generated by reaction in the generator 423Gas, in which SO3The specific structural components of the generating device 42 can adopt the existing structural design.
It is understood that SO2 Standard gas source 41 and SO3The valves and flow meters arranged on the connecting lines of the generating device 42 are respectively used for controlling whether to supply SO3The generating device 42 provides SO2Gas, and SO provided2The amount of gas is controlled SO as to control the SO generated according to the requirement3The amount of gas. SO (SO)3The valves and flow meters on the connecting pipeline between the generating device 42 and the dry-type electric dust collector 11 are convenient for knowing the SO conveyed to the dry-type electric dust collector 113Amount of gas SO as to be controlled by the control system 60, SO3The valves and flow meters on the connecting lines between the generating device 42 and the wet electrostatic precipitator 12 facilitate knowing the SO delivered to the wet electrostatic precipitator 123The amount of gas to be controlled by the control system 60.
This experimental apparatus's humidification system includes steam generator 50, and steam generator 50 has two exports, respectively with dry-type electrostatic precipitator 11's import and wet-type electrostatic precipitator 12's access connection, and all be equipped with valve and flowmeter on two connecting pipelines. It can be understood that the valve and the flow meter on the connecting pipeline between the steam generator 50 and the dry electric dust collector 11 facilitate to know the steam amount conveyed to the dry electric dust collector 11 so that the control system 60 can control the humidity, and the valve and the flow meter on the connecting pipeline between the steam generator 50 and the wet electric dust collector 12 facilitate to know the steam amount conveyed to the wet electric dust collector 12 so that the control system 60 can control the humidity.
Of course, in other embodiments, the SO of the acid addition system 403The generator 42 may have only one outlet, which is divided into two paths to be connected to the dry electric dust collector 11 and the wet electric dust collector 12, and similarly, the steam generator 50 may have only one outlet, which is divided into two paths to be connected to the dry electric dust collector 11 and the wet electric dust collector 12.
Based on the experimental device, the invention also provides a device for simulating dust removal and SO removal3The experimental method comprises the steps of removing SO by dry-type electric precipitation3Simulation method, dry type electric precipitation and low-low temperature electric precipitation for removing SO in cooperation3Simulation method and wet-type electric precipitation cooperative SO removal3Simulation method, combining these three modesThe simulation method specifically describes the use of the experimental apparatus and the specific process control parameters in each simulation method.
In practical application, before an experiment is carried out, all valves of the experimental device are in a closed state, and no matter what simulation method is carried out, SO can be started firstly during the experiment3A generator 42 heated to a set temperature, for example, about 480 ℃ in terms of SO3The generating device 42 is usually provided with a heating structure, a proper amount of dust is added to the feeding machine 21 of the feeding system 20, the steam generator 50 is started to heat, the induced draft fan 13 and the air heater 30 are started, after the air volume and the temperature reach set values, the high-pressure systems of the dry electric dust collector 11 and the wet electric dust collector 12 can be started through the control system 60 according to experimental requirements, and then SO can be generated3SO is introduced into the generator 422Marking gas, starting the air compressor 22 and the feeder 21, and opening the SO3Valves on the respective connecting lines of the generating means 42 and the steam generator 50.
Specifically, dry-type electric dust removal is carried out to remove SO3During simulation, the high voltage of the wet electric dust collector 12 is controlled to be in a closed state, a passage from the acid adding system 40 to the wet electric dust collector 12 is cut off, and a passage from the steam generator 50 to the wet electric dust collector 12 is cut off, namely, the wet electric dust collector 12 is only used as a passage at the moment and does not participate in dust removal operation; if the valves on the connecting pipelines are electric control valves, the on-off can be controlled by the control system 60, and of course, if the valves are in other forms, the valves can also be controlled manually.
During experiments, the flow velocity of flue gas in the flue 10 is controlled to be larger than 6m/s (for example, larger than 12m/s) by the induced draft fan 13, the temperature of the flue gas in the flue 10 is controlled to be larger than the acid dew point temperature (for example, 130 ℃) by the air heater 30, the humidity of the flue gas in the flue 10 is controlled to be 3% -8% (for example, 5% can be selected) by the steam generator 50, and the concentration of the flue gas in the flue 10 is controlled to be larger than 5g/m by the feeding system 203(e.g., alternatively 20 g/m)3) SO in flue 10 is controlled by acid addition system 403The concentration is 10-150 mg/m3(e.g., alternatively 30 mg/m)3)。
By SO3The monitoring instrument 70 monitors the feeding of the dry-type electric dust collector 11,SO of the outlet3Concentrations, respectively marked C1、C2According to the formula
Can obtain dry type electric precipitation SO removal3Efficiency η of1The efficiency is the SO of the conventional dry-type electric dust removal pair3The removal efficiency of (2).
Specifically, the SO is removed by the cooperation of dry type electric dust removal and low-low temperature electric dust removal3During simulation, the high voltage of the wet electric dust collector 12 is controlled to be in a closed state, the passage from the acid adding system 40 to the wet electric dust collector 12 is cut off, and the passage from the steam generator 50 to the wet electric dust collector 12 is cut off, namely, the wet electric dust collector 12 is only used as a passage and does not participate in dust collection operation.
In the experiment, except the temperature of smoke gas, all parameters are controlled to be equal to the temperature of the dry electric dust collector for removing SO3The simulation is consistent, and in the experiment, the flue gas temperature is controlled to be lower than the acid dew point temperature so as to simulate the effect of putting into the low-temperature economizer.
By SO3Monitoring instrument 70 monitors SO at inlet and outlet of dry electric dust collector 113Concentrations, respectively marked C1＇、C2According to a formula
Can obtain the SO of the dry-type electric precipitation pair when the dry-type electric precipitation pair is thrown into a low-temperature coal economizer3Removal efficiency eta of2According to the formula
Can obtain the SO of the low-temperature economizer3Contribution ratio of eta3According to the formula
Can obtain low-low temperature electric precipitation pair SO3Removal efficiency eta of4。
Specifically, wet-type electric dust removal is carried out to remove SO3During simulation, the high voltage of the dry electric dust collector 11 is controlled to be in a closed state, and the acid adding system is cut off40 to the dry-type electric dust collector 11, cutting off the passage between the steam generator 50 and the dry-type electric dust collector 11, namely at this time, the dry-type electric dust collector 11 is only used as a channel and does not participate in the dust collection operation, and controlling the dust flowing out of the first outlet of the diluter 23 to be directly conveyed to the recovery device 14; if the valves on the connecting pipelines are electric control valves, the on-off can be controlled by the control system 60, and of course, if the valves are in other forms, the valves can also be controlled manually.
During experiments, the flow velocity of flue gas in the flue 10 is controlled to be larger than 6m/s (for example, larger than 12m/s) by the induced draft fan 13, the temperature of the flue gas in the flue 10 is controlled to be smaller than 60 ℃ (for example, 50 ℃) by the air heater 30, the humidity of the flue gas in the flue 10 is controlled to be saturated (for example, 13.5%) by the steam generator 50, and the concentration of the dust in the flue 10 is controlled to be smaller than 50mg/m by the feeding system 203(e.g., 20 mg/m)3) SO in flue 10 is controlled by acid addition system 403The concentration is less than 20mg/m3(e.g., alternatively 10 mg/m)3)。
By SO3Monitoring instrument 70 monitors SO at inlet and outlet of wet electric dust collector 123Concentrations, respectively marked C3、C4According to the formula
Can obtain wet type electric precipitation SO removal3Efficiency η of5。
In the experiment of each simulation method, the flue gas temperature, the flue gas humidity, the dust concentration, the dust type and the like can be adjusted, and the parameters can be studied for removing SO by adjusting one or more influence parameters3The method has high flexibility, and can provide basis and technical support for the actual dust removal design.
It should be noted that the experimental apparatus is only used for simulating SO removal3When the device is actually arranged, the dry electric dust collector 11 and the wet electric dust collector 12 do not need to adopt equipment adopted in actual post-treatment, the structure of the device can be the same as that of an actually-operated dust collector, but the number of electric field channels and the number of electric fields can be correspondingly reduced and arranged, and the device does not need to be consistent with that of the actually-operated structure.
In order to ensure that the temperature of the flue gas in the flue 10 can be stabilized within a set range during the experiment, all parts passing through in the flue gas circulation can be made of corrosion-resistant materials, and are provided with heat-insulating structures.
The simulation dust removal and SO removal provided by the invention3The experimental apparatus and method are described in detail. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (13)
1. Simulation dust removal desorption SO3The experimental device is characterized by comprising a feeding system, an acid adding system, a heating system, a humidifying system, a dry electric dust remover and a wet electric dust remover; the dry electric dust remover and the wet electric dust remover are arranged on the flue, and the dry electric dust remover is positioned at the upstream of the wet electric dust remover;
the feeding system is used for providing dust for the dry electric dust remover and the wet electric dust remover; the acid adding system is used for providing SO for the dry electric dust remover and the wet electric dust remover3A gas; the heating system is used for adjusting the temperature of the flue gas in the flue; the humidifying system is used for adjusting the humidity in the dry-type electric dust remover and the humidity in the wet-type electric dust remover.
2. Simulated dust removal SO removal according to claim 13The experimental device is characterized by also comprising SO3A monitoring instrument for monitoring SO at the inlet and outlet of the dry electric precipitator3Concentration, and SO at inlet and outlet of wet electric dust collector3And (4) concentration.
3. According to claimSimulated dust removal SO removal as described in claim 13The experimental device is characterized by further comprising a control system, wherein the control system is used for controlling the feeding amount of the feeding system and the air supply amount of the acid adding system and further used for controlling the heating system, the humidifying system, the dry type electric dust remover and the working state of the wet type electric dust remover.
4. Simulated dust removal SO removal according to claim 13The experimental device is characterized in that a draught fan is arranged on the flue and located at the downstream of the wet electric dust collector.
5. Simulated dust removal SO removal according to claim 43The experimental device is characterized in that a recovery device is arranged on the flue and is positioned at the downstream of the draught fan and used for recovering acid gas and/or dust of the flue gas in the flue.
6. Simulated dust removal SO according to any one of claims 1 to 53The experimental device is characterized in that the feeding system comprises an air compressor, a diluter and a feeder, the air compressor is connected with the diluter, the feeder is used for conveying dust to the diluter, the diluter is used for dividing the dust into two paths according to a set proportion under the action of the air compressor, and the two paths of dust are respectively conveyed to the inlet of the dry-type electric dust remover and the inlet of the wet-type electric dust remover.
7. Simulated dust removal SO removal according to claim 63The experimental device is characterized in that the diluter and a connecting pipeline between the inlets of the dry-type electric dust remover is also connected with the recovery device, the diluter is connected with the dry-type electric dust remover and a valve is arranged on the connecting pipeline of the recovery device to control one path of dust of the diluter to be conveyed to the dry-type electric dust remover or conveyed to the recovery device.
8. According to the claimsSolving the problem of removing SO by simulating dust removal according to any one of 1 to 53The experimental device is characterized in that the acid adding system comprises SO2Standard gas source and SO3Generating means of said SO2A source of a standard gas and the SO3The generating devices are connected, a valve and a flowmeter are arranged on the connecting pipeline, and the SO3The outlet of the generating device is connected with the inlet of the dry electric dust remover and the inlet of the wet electric dust remover, and a valve and a flowmeter are arranged on the two connecting pipelines.
9. Simulated dust removal SO according to any one of claims 1 to 53The experimental device is characterized in that the heating system is an air heater, and the air heater is arranged on the flue and positioned at the upstream of the dry-type electric dust remover.
10. Simulated dust removal SO according to any one of claims 1 to 53The experimental device is characterized in that the humidifying system comprises a steam generator, the outlet of the steam generator is connected with the inlet of the dry-type electric dust remover and the inlet of the wet-type electric dust remover, and valves and flow meters are arranged on two connecting pipelines.
11. Simulation dust removal desorption SO3Experimental method according to any one of claims 1 to 10, comprising dry-type electric precipitation for SO removal3Simulation method of SO removal by dry electric dust removal3The simulation method comprises the following steps:
controlling the high voltage of the wet electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the wet electric dust remover, and cutting off a passage from the humidifying system to the wet electric dust remover;
the flow velocity of the flue gas in the flue is controlled to be more than 6m/s, the temperature of the flue gas is controlled to be more than the acid dew point temperature, the humidity of the flue gas is 3-8%, and the concentration of dust is more than 5g/m3，SO3The concentration is 10-150 mg/m3；
Monitoring theSO at inlet and outlet of dry electric dust collector3And (4) concentration.
12. Simulated dust removal SO removal according to claim 113The experimental method is characterized by also comprising the synergistic removal of SO by dry-type electric precipitation and low-low temperature electric precipitation3Simulation method, in which dry-type electric precipitation and low-low temperature electric precipitation are used for removing SO in a synergistic manner3The simulation method comprises the following steps:
controlling the high voltage of the wet electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the wet electric dust remover, and cutting off a passage from the humidifying system to the wet electric dust remover;
controlling the flow velocity of the flue gas in the flue to be more than 6m/s, the temperature of the flue gas to be less than the acid dew point temperature, the humidity of the flue gas to be 3-8 percent and the concentration of dust to be more than 5g/m3，SO3The concentration is 10-150 mg/m3；
Monitoring SO at inlet and outlet of dry electric dust collector3And (4) concentration.
13. Simulated dust removal SO removal according to claim 11 or 123The experimental method is characterized by also comprising the step of removing SO by wet-type electric precipitation3Simulation method, wet-type electric dust removal SO3The simulation method comprises the following steps:
controlling the high voltage of the dry-type electric dust remover to be in a closed state, cutting off a passage from the acid adding system to the dry-type electric dust remover, and cutting off a passage from the humidifying system to the dry-type electric dust remover;
controlling the flow velocity of the flue gas in the flue to be more than 6m/s, the temperature of the flue gas to be less than 60 ℃, the humidity of the flue gas to be saturated humidity of the flue gas, and the concentration of dust to be less than 50mg/m3，SO3The concentration is less than 20mg/m3；
Monitoring SO at inlet and outlet of wet electric dust collector3And (4) concentration.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212681A (en) * | 2022-08-31 | 2022-10-21 | 中国矿业大学 | Dry-wet collaborative dust removal method with dust characteristic self-adaption function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202666645U (en) * | 2012-07-20 | 2013-01-16 | 中电投远达环保工程有限公司 | Saving-type high-efficiency and energy-saving dry-wet composite dust removal and desulfurization system for flue gas |
| JP2013104694A (en) * | 2011-11-10 | 2013-05-30 | Horiba Ltd | Simulated gas supply device |
| CN205091141U (en) * | 2015-10-15 | 2016-03-16 | 北京国能中电节能环保技术有限责任公司 | A loop test system for testing and assess industry gas cleaning device |
| CN107894342A (en) * | 2017-12-15 | 2018-04-10 | 福建龙净环保股份有限公司 | A kind of electric precipitator performance experimental system |
| CN108007836A (en) * | 2017-12-27 | 2018-05-08 | 福建龙净环保股份有限公司 | For demarcating the flue gas generating system of low concentration particulate matter test method accuracy |
| CN210332107U (en) * | 2019-04-26 | 2020-04-17 | 山西大学 | Series connection dust remover laboratory bench |
| CN216572437U (en) * | 2021-10-19 | 2022-05-24 | 福建国环环境检测有限公司 | Simulation dust removal SO removal3Experimental device of (2) |
-
2021
- 2021-10-19 CN CN202111216145.1A patent/CN113786724A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013104694A (en) * | 2011-11-10 | 2013-05-30 | Horiba Ltd | Simulated gas supply device |
| CN202666645U (en) * | 2012-07-20 | 2013-01-16 | 中电投远达环保工程有限公司 | Saving-type high-efficiency and energy-saving dry-wet composite dust removal and desulfurization system for flue gas |
| CN205091141U (en) * | 2015-10-15 | 2016-03-16 | 北京国能中电节能环保技术有限责任公司 | A loop test system for testing and assess industry gas cleaning device |
| CN107894342A (en) * | 2017-12-15 | 2018-04-10 | 福建龙净环保股份有限公司 | A kind of electric precipitator performance experimental system |
| CN108007836A (en) * | 2017-12-27 | 2018-05-08 | 福建龙净环保股份有限公司 | For demarcating the flue gas generating system of low concentration particulate matter test method accuracy |
| CN210332107U (en) * | 2019-04-26 | 2020-04-17 | 山西大学 | Series connection dust remover laboratory bench |
| CN216572437U (en) * | 2021-10-19 | 2022-05-24 | 福建国环环境检测有限公司 | Simulation dust removal SO removal3Experimental device of (2) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212681A (en) * | 2022-08-31 | 2022-10-21 | 中国矿业大学 | Dry-wet collaborative dust removal method with dust characteristic self-adaption function |
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