CN109387595B - Continuous monitoring of SO 3 Apparatus and method for concentration of (a) - Google Patents
Continuous monitoring of SO 3 Apparatus and method for concentration of (a) Download PDFInfo
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- CN109387595B CN109387595B CN201811457079.5A CN201811457079A CN109387595B CN 109387595 B CN109387595 B CN 109387595B CN 201811457079 A CN201811457079 A CN 201811457079A CN 109387595 B CN109387595 B CN 109387595B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 148
- 238000010521 absorption reaction Methods 0.000 claims abstract description 101
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 50
- 238000004458 analytical method Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 57
- 239000007800 oxidant agent Substances 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/96—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation using ion-exchange
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a method for continuously monitoring SO 3 Apparatus and method for continuously monitoring SO 3 The device of the concentration of (2) comprises a collecting unit and SO 2 Test unit, SO 3 And the testing unit and the analysis unit. The acquisition unit is used for acquiring gas, SO 2 The test unit is communicated with the acquisition unit and is used for testing SO in the gas 2 Concentration of SO 3 The test unit comprises a plurality of absorption units and sulfate ion test units, a switch is arranged between one end of each absorption unit and each acquisition unit to control whether the absorption units are communicated with each other or not, the other end of each absorption unit is communicated with the sulfate ion test unit, and the absorption units are used for absorbing SO in gas 2 And SO 3 And SO is combined with 2 And SO 3 Is converted into sulfate ions. Continuous monitoring of SO 3 The method of the concentration of (2) comprises a switching step, a collecting step and a test SO 2 Concentration step, sulfate ion concentration test step, analysis step and continuous test step.
Description
Technical Field
The invention relates to the technical field of air pollution control, in particular to a method for continuously monitoring SO 3 Is provided.
Background
SO discharged from coal-fired power plant 3 Mainly from two aspects: on the one hand, about 0.5 to 1.5 percent of sulfur in the coal burning process is oxidized into SO 3 The method comprises the steps of carrying out a first treatment on the surface of the On the other hand, in the SCR denitration process, about 1% of SO in the flue gas can be reacted under the action of a catalyst 2 Conversion to SO 3 。SO 3 The discharge has adverse effects on the stable operation of subsequent equipment and the control of atmospheric pollution.
Moreover, for SO 3 Concentration monitoring technology development, scientific workers focus on SO at the outlet of SCR denitration device 3 On concentration testing, although the stack outlet SO 3 Concentration monitoring is also the focus of attention, but the test method still follows the existing domestic and foreign standards, and the existing standard method can perform SO 3 The monitoring is complicated in operation, large in error and poor in device reliability.
Disclosure of Invention
The invention aims to provide a method for continuously monitoring SO 3 Is provided.
In order to solve the technical problems, the invention provides a method for continuously monitoring SO 3 Comprises a collection unit, SO 2 Test unit, SO 3 Test unitAnd an analysis unit. The acquisition unit is used for acquiring gas, SO 2 The test unit is communicated with the acquisition unit SO 2 The test unit is used for testing SO in gas 2 Concentration of SO 3 The test unit comprises a plurality of absorption units and sulfate ion test units, a switch is arranged between one end of each absorption unit and each acquisition unit to control whether the absorption units are communicated with each other or not, the other end of each absorption unit is communicated with the sulfate ion test unit, and the absorption units are used for absorbing SO in gas 2 And SO 3 And SO is combined with 2 And SO 3 Is converted into sulfate ions. Analysis units and SO respectively 2 The test unit and the absorption unit are electrically connected, and the analysis unit is used for analyzing the concentration and SO of sulfate ions 2 SO in gas tested by test unit 2 Concentration of SO in the gas is calculated 3 Is a concentration of (3).
Alternatively, SO 2 The test unit comprises a first preprocessor and SO 2 Flue gas analyzer, first preprocessor is arranged on acquisition unit and SO 2 The first preprocessor is communicated with the acquisition unit between the flue gas analyzers, SO 2 The flue gas analyzer is communicated with a first preprocessor which is used for preprocessing gas and SO 2 Flue gas analyzer for testing SO in gas 2 Is a concentration of (3).
Optionally, the collecting unit comprises a sampling gun and a heat tracing pipe, one end of the heat tracing pipe is communicated with the sampling gun, and the other end of the heat tracing pipe is respectively connected with the SO 2 The test unit is communicated with the absorption unit.
Optionally, the other end of the heat tracing pipe and SO 2 The test unit and the absorption unit are communicated through a three-way valve.
Alternatively, SO 2 The test unit and the absorption unit both comprise a flowmeter which is arranged on the SO 2 One end of the test unit close to the acquisition unit or one end of the absorption unit close to the acquisition unit.
Alternatively, SO is continuously monitored 3 The apparatus of the concentration of (2) further comprises a gas discharge unit, which is in communication with the plurality of absorption units.
Optionally, each absorption unit comprises an absorber and an oxidizer, the absorber is used for containing the absorbed medicament, and two ends of the absorber are respectively communicated with the oxidizer and the acquisition unit.
Alternatively, SO 3 The test unit also comprises a second preprocessor, and two ends of the second preprocessor are respectively communicated with the absorption unit and the sulfate ion test unit.
Alternatively, SO 3 The test unit comprises a dosing unit, and the dosing unit is connected with the absorption unit to dose the absorption unit with medicine.
In another aspect of the invention, the invention also provides a method of continuously monitoring SO 3 Comprises a switching step, a collecting step and a SO testing step 2 Concentration step, sulfate ion concentration test step, analysis step and continuous test step. And a switching step: and opening a switch between one end of one or more absorption units and the acquisition unit. Collecting; the collection unit collects the gas. Testing SO 2 Concentration step: test unit for testing SO in gas 2 Is a concentration of (3). Step of testing sulfate ion concentration: the absorption unit absorbs SO in the gas 2 And SO 3 And SO is combined with 2 And SO 3 Converted to sulfate ions, and the sulfate ion test unit tests the concentration of sulfate ions. The analysis step: the analysis unit is based on the concentration of sulfate ions, SO 2 SO in gas tested by test unit 2 Concentration of SO in the gas is calculated 3 Is a concentration of (3). And (3) continuous testing: closing one end of one or more absorption units and a switch between the acquisition units, opening one end of the other one or more absorption units and the switch between the acquisition units, alternately working, repeating the acquisition steps and testing SO 2 A concentration step, a sulfate ion concentration testing step and an analysis step.
In summary, the invention provides for continuous monitoring of SO 3 At the same time has SO in the device 2 Test unit, SO 3 Test unit, SO 2 Test unit for testing SO in gas 2 In the actual use process, the concentration of the sulfate ions obtained by the test of the sulfate ion test unit is the SO in the gas 2 And SO 3 Is the total concentration of SO 2 And SO 3 Less SO from the total concentration of (2) 2 SO in gas tested by test unit 2 Is the concentration of SO in the gas 3 Is simple in principle. And SO 2 Test unit, SO 3 The test units are separate independent units and do not affect each other, SO the invention provides continuous monitoring of SO 3 The means of concentration of (2) can be in the presence of SO 2 In the environmental context of testing SO 3 Is a concentration of (3). Second, stack outlets of power plants or other discharging enterprises are typically provided with SO 2 Test unit, while the invention provides continuous monitoring of SO 3 Also included in the apparatus of the concentration of SO 2 The test unit only needs to be in the original SO 2 On the basis of the test unit, SO is added 3 The test unit and the analysis unit can achieve the simultaneous test of SO 2 Concentration of (2) and SO 3 The concentration of the water is improved, the existing device is effectively utilized, and the modification cost is saved. Furthermore, since the absorption unit absorbs SO 2 And SO 3 The capacity of the invention is limited, when the absorption unit needs to be maintained after a period of operation, a switch is arranged between one end of the absorption unit and the acquisition unit to control whether the absorption unit is communicated with the acquisition unit, the absorption units can be grouped by controlling the closing of the switch, one or more groups of absorption units can be opened each time to work, and the closed absorption units can be maintained to realize SO 3 Is also capable of monitoring SO when multiple groups of absorption units are opened simultaneously 2 And SO 3 And (3) carrying out contrast correction on the result of the total concentration of the device, and improving the testing accuracy of the device. In addition, the analysis unit of the present invention is based on the concentration of sulfate ions, SO 2 SO in gas tested by test unit 2 Concentration of SO in the gas is calculated 3 The concentration of (3) is intelligent and quick without manual calculation.
The invention provides continuous monitoring of SO 3 Is ensured by the concentration method of (2) 3 The concentration test of (2) is carried out continuously.
Drawings
FIG. 1 is the presentEmbodiments of the invention provide for continuous monitoring of SO 3 Schematic of the apparatus for concentration of (a).
Description of the embodiments
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Please refer to fig. 1. The invention provides a method for continuously monitoring SO 3 Comprises a collection unit 1, SO 2 Test unit 5, SO 3 A test unit 6 and an analysis unit. The collection unit 1 is used for collecting gas, SO 2 The test unit 5 is communicated with the acquisition unit 1 and is used for testing SO in gas 2 Concentration of SO 3 The test unit 6 comprises a plurality of absorption units 19 and sulfate ion test units 15, a switch is arranged between one end of the absorption unit 19 and the acquisition unit 1 to control whether the absorption unit 19 is communicated with the acquisition unit 1, the other end of the absorption unit 19 is communicated with the sulfate ion test units 15, and the absorption unit 19 is used for absorbing SO in gas 2 And SO 3 And SO is combined with 2 And SO 3 Is converted into sulfate ions. Analysis units and SO respectively 2 The test unit 5 and the absorption unit 19 are electrically connected, and the analysis unit is used for analyzing the concentration and SO of sulfate ions 2 SO in the gas tested by the test unit 5 2 Concentration of SO in the gas is calculated 3 Is a concentration of (3).
The invention provides continuous monitoring of SO 3 At the same time has SO in the device 2 Test unit 5, SO 3 Test unit 6, SO 2 Test unit 5 tests SO in gas 2 In the actual use process, the concentration of the sulfate ions obtained by the sulfate ion test unit 15 is the SO in the gas 2 And SO 3 Is the total concentration of SO 2 And SO 3 Less SO from the total concentration of (2) 2 SO in the gas tested by the test unit 5 2 Is the concentration of SO in the gas 3 Is simple in principle. And SO 2 Test unit 5, SO 3 The test units 6 are separate independent units, and do not affect each other, so the invention provides a successionMonitoring SO 3 The means of concentration of (2) can be in the presence of SO 2 In the environmental context of testing SO 3 Is a concentration of (3). Second, stack outlets of power plants or other discharging enterprises are typically provided with SO 2 Test unit 5, while the present invention provides continuous monitoring of SO 3 Also included in the apparatus of the concentration of SO 2 The test unit 5 only needs to be used for the original SO 2 On the basis of the test unit 5, SO is added 3 The test unit 6 and the analysis unit can achieve the simultaneous test of SO 2 Concentration of (2) and SO 3 The concentration of the water is improved, the existing device is effectively utilized, and the modification cost is saved. Furthermore, since the absorption unit 19 absorbs SO 2 And SO 3 While the maintenance of the absorption units 19 is required after a period of operation, the invention has the advantages that a switch is arranged between one end of the absorption unit 19 and the acquisition unit 1 to control whether the absorption units 19 are communicated with the acquisition unit 1, the absorption units 19 can be grouped by controlling the closing of the switch, one or more groups of absorption units 19 can be opened each time to work, and the closed absorption units 19 can be maintained to realize SO 3 Is also possible for SO when multiple groups of absorption units 19 are turned on simultaneously 2 And SO 3 And (3) carrying out contrast correction on the result of the total concentration of the device, and improving the testing accuracy of the device. In addition, the analysis unit of the present invention is based on the concentration of sulfate ions, SO 2 SO in the gas tested by the test unit 5 2 Concentration of SO in the gas is calculated 3 The concentration of (3) is intelligent and quick without manual calculation.
In the present embodiment, the switch between one end of the absorption unit 19 and the collection unit 1 is the switching valve 10, which is convenient for switching, but in other embodiments, the switch may be a separate switch.
In this embodiment, SO 2 The test unit 5 comprises a first pre-processor 8 and SO 2 The flue gas analyzer 9, the first preprocessor 8 is arranged on the acquisition unit 1 and SO 2 The first preprocessor 8 is communicated with the acquisition unit 1 between the flue gas analyzers 9 SO 2 The flue gas analyzer 9 is communicated with a first preprocessor 8, the first preprocessor8 is used for preprocessing the gas SO 2 The flue gas analyzer 9 is used for testing SO in the gas 2 Is a concentration of (3). SO (SO) 2 The test unit 5 also comprises an ion electrode, a flushing water system, a drainage system, etc.
In this embodiment, the collecting unit 1 includes a sampling gun and a heat tracing pipe 3, one end of the heat tracing pipe 3 is connected with the sampling gun, and the other end of the heat tracing pipe 3 is respectively connected with SO 2 The test unit 5 and the absorption unit 19 are communicated. The sampling gun comprises a sampling tube, a heater 2, a compressed air tank, a connecting tube and the like. In the practical application process, the sampling gun is placed in the gas to be tested to collect the gas, the heat tracing pipe 3 can prevent the viscosity of the liquid in the pipe from increasing at low temperature, the pressure drop in the pipe is increased, the power consumption is increased, and the energy-saving effect is achieved. The heat tracing pipe 3 can be made of No. 20 steel or stainless steel pipe.
In the present embodiment, the other end of the heat trace pipe 3 and the SO 2 The test unit 5 and the absorption unit 19 are communicated through the three-way valve 4. The three-way valve 4 divides one air path originally collected by the sampling gun into two paths which are respectively matched with SO 2 Test unit 5, SO 3 The test unit 6 communicates.
In this embodiment, SO 2 The test unit 5 and the absorption unit 19 each comprise a flowmeter 7, the flowmeter 7 being arranged at the SO 2 The end of the test unit 5 close to the acquisition unit 1 or the end of the absorption unit 19 close to the acquisition unit 1. The flow meter 7 is used to measure inflow SO 2 Test unit 5, SO 3 The gas flow of the unit 6 is tested.
In the present embodiment, each absorption unit 19 includes an absorber 11 and an oxidizer 12, the absorber 11 is used for containing an absorbing agent, and two ends of the absorber are respectively communicated with the oxidizer 12 and the collecting unit 1. The absorption units 19 are connected in parallel. In the present embodiment, there are two absorption units 19, but the number of the absorption units 19 is not limited in any way, and in other embodiments, the number of the absorption units 19 may be any of three, four, five, six, seven, ten, or the like. The absorber 11 in this embodiment is a secondary absorption bottle, the oxidizer 12 is a primary oxidation bottle, and the secondary absorption bottle is used to absorb SO in gas 2 And SO 3 Realizing secondary absorptionEnsure SO in the gas 2 And SO 3 The absorption is complete. The absorber 11 and the oxidizer 12 are not limited in any way by the present invention. Each absorption unit 19 of the present embodiment also comprises a suction pump, a flow meter 7, a flushing water system, etc.
In this embodiment, SO is continuously monitored 3 The apparatus of the concentration of (2) further comprises an exhaust unit in communication with the plurality of absorption units 19, the exhaust unit comprising a wet flow meter 16 and an air extraction device 17 such as an air pump. More specifically, the exhaust unit communicates with the absorber 11, and the gas is discharged through the exhaust unit after being absorbed by the absorber 11. The wet flow meter 16 is used to test the flow rate of the discharged gas.
In this embodiment, the absorption bottle contains the absorption liquid and the oxidation bottle contains the oxidant, but the invention is not limited to the absorption bottle and the oxidation bottle, and in other embodiments, the absorption bottle can also contain the oxidant, and the oxidation bottle contains the oxidant, and the oxidant can make SO in the absorber 11 2 Sulfite oxidizes to sulfate ions.
In this embodiment, SO 3 The test unit 6 further comprises a second preprocessor 14, and two ends of the second preprocessor 14 are respectively communicated with the absorption unit 19 and the sulfate ion test unit 15. The sulfate ion test unit 15 may be an ion chromatograph, but the sulfate ion test unit 15 is not limited in any way by the present invention. SO (SO) 3 The test unit 6 also comprises an ion electrode, a flushing water system, a drainage system, etc.
In this embodiment, a shut-off valve 13 is provided in the absorption unit 19 between the oxidizer 12 and the second pre-processor 14. For closing the passage between the oxidizer 12 and the second pre-processor 14, so that the shut-off valve 13 is opened after complete absorption and oxidation, and the completely absorbed and oxidized gas is introduced into the sulfate ion test unit 15.
In this embodiment, SO 3 The test unit 6 comprises a dosing unit 18, the dosing unit 18 and the absorption unit 19 being connected to dose the absorption unit 19. The dosing unit 18 comprises an absorbent and an oxidant injection system for injecting sample into the absorber 11 and the oxidizer 12 respectively, and introducing the absorbent and the oxidant into the absorberAfter discharging, the absorbing liquid and the oxidant are timely supplemented, SO that the parallel absorption units 19 alternately operate, and SO is continuously monitored 3 Is a concentration of (3).
In this embodiment, SO is continuously monitored 3 The device of the concentration of the (2) also comprises a data output unit and a control unit, wherein the control unit comprises logic feedback, data control, intelligent control and the like, and the control unit is respectively connected with the acquisition unit 1 and the SO 2 Test unit 5, SO 3 The test unit 6 and the analysis unit are electrically connected. The data output unit may be a printer including, in addition to the printer, a standard database, a computing conversion system, a display, a data storage, and the like.
Continuous monitoring of SO in the present invention 3 The concentration of (2) can be used according to the acquisition units 1, SO 2 Test unit 5, SO 3 The test unit 6 and the analysis unit are connected in sequence.
In another aspect of the invention, the invention also provides a method of continuously monitoring SO 3 Comprises a switching step, a collecting step and a SO testing step 2 Concentration step, sulfate ion concentration test step, analysis step and continuous test step. And a switching step: the switch between one end of one or several absorption units 19 and the acquisition unit 1 is opened. Collecting; the collection unit 1 collects the gas. Testing SO 2 Concentration step: test unit for testing SO in gas 2 Is a concentration of (3). Step of testing sulfate ion concentration: the absorption unit 19 absorbs SO in the gas 2 And SO 3 And SO is combined with 2 And SO 3 Converted to sulfate ions, the sulfate ion test unit 15 tests the concentration of sulfate ions. The analysis step: the analysis unit is based on the concentration of sulfate ions, SO 2 SO in the gas tested by the test unit 5 2 Concentration of SO in the gas is calculated 3 Is a concentration of (3). And (3) continuous testing: closing the switch between one end of one or more absorption units 19 and the acquisition unit 1, opening the switch between one end of the other or more absorption units 19 and the acquisition unit 1, and repeating the acquisition steps and testing SO 2 Concentration step, sulfate ion concentration test step and analysis step。
More specifically, the invention provides the acquisition steps of: the acquisition unit 1 extends into the flue from the side hole, the sampling gun and the heater 2 of the heat tracing pipe 3 are opened at the same time, and sampling is started after the heat tracing pipe 3 meets the requirement.
More specifically, the sequential test steps are: two groups of parallel operation are alternately performed, and an absorbent and an oxidant are respectively added into the absorption bottle and the oxidation bottle by the dosing unit 18, and when one group performs smoke absorption work, the other group is dosed and tested by the dosing unit 18. After one group of absorption works are completed, the group is switched to the other group through the switching valve 10 to absorb smoke, the group after the absorption is completed is used for conveying the absorption liquid to the second preprocessor 14 for processing after the oxidation of the absorption liquid is completed, and then the absorbent and the oxidant are added into the emptied absorption bottle and the emptied oxidation bottle through the dosing unit 18, so that continuous uninterrupted work is ensured.
The invention provides continuous monitoring of SO 3 The concentration method of (2) adopts on-line air extraction-chemical absorption/SO 2 Test-sulfate ion chromatography-SO 2 The concentration deduction method directly obtains a final result on site, can be used for on-line continuous monitoring, and has accuracy and precision meeting the related specification requirements.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus the above terms should not be construed as limiting the invention.
Although the invention has been described with reference to the preferred embodiments, it should be understood that the invention is not limited thereto, but rather may be modified and varied by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. Continuous monitoring SO 3 Is characterized by comprising:
a collecting unit for collecting the gas,
SO 2 the test unit is communicated with the acquisition unit and is used for testing SO in the gas 2 Is used for the concentration of (a),
SO 3 the test unit comprises a plurality of absorption units and sulfate ion test units, a switch is arranged between one end of each absorption unit and each collection unit to control whether the absorption units are communicated with each other or not, the other end of each absorption unit is communicated with each sulfate ion test unit, and the absorption units are used for absorbing SO in gas 2 And SO 3 And SO is combined with 2 And SO 3 Conversion to sulfate ions; and
An analysis unit respectively associated with the SO 2 The test unit is electrically connected with the absorption unit, and the analysis unit is used for analyzing the SO according to the concentration of sulfate ions 2 SO in gas tested by test unit 2 Concentration of SO in the gas is calculated 3 Is a concentration of (2);
wherein the SO 2 The test unit comprises a first preprocessor and SO 2 The first preprocessor is arranged on the acquisition unit and the SO 2 The first preprocessor is communicated with the acquisition unit between the flue gas analyzers, and the SO 2 The flue gas analyzer is communicated with the first preprocessor, the first preprocessor is used for preprocessing the gas, and the SO 2 The flue gas analyzer is used for testing SO in the gas 2 Is a concentration of (2);
wherein the acquisition unit comprises a sampling gun and a heat tracing pipe, one end of the heat tracing pipe is communicated with the sampling gun, and the other end of the heat tracing pipe is respectively connected with the SO 2 The test unit is communicated with the absorption unit.
2. The continuous monitoring SO of claim 1 3 Is characterized in that the other of the heat tracing pipesEnd and the SO 2 The test unit is communicated with the absorption unit through a three-way valve.
3. The continuous monitoring SO of claim 1 3 Is characterized in that the SO concentration device 2 The test unit and the absorption unit comprise flowmeter arranged on the SO 2 One end of the test unit, which is close to the acquisition unit, or one end of the absorption unit, which is close to the acquisition unit.
4. The continuous monitoring SO of claim 1 3 Is characterized in that the concentration of SO is continuously monitored 3 The apparatus of (1) further comprises a vent unit in communication with the plurality of absorber units.
5. The continuous monitoring SO of claim 1 3 Is characterized in that each absorption unit comprises an absorber and an oxidizer, wherein the absorber is used for containing absorbed medicament, and two ends of the absorber are respectively communicated with the oxidizer and the acquisition unit.
6. The continuous monitoring SO of claim 1 3 Is characterized in that the concentration of SO 3 The test unit also comprises a second preprocessor, and two ends of the second preprocessor are respectively communicated with the absorption unit and the sulfate ion test unit.
7. The continuous monitoring SO of claim 1 3 Is characterized in that the SO concentration device 3 The test unit comprises a dosing unit, and the dosing unit is connected with the absorption unit to dose the absorption unit with medicine.
8. Continuous monitoring SO 3 Is a method for continuously monitoring SO using the method as claimed in any one of claims 1 to 7 3 Is characterized in that the concentration of SO is continuously monitored 3 The method of the concentration of (2) comprises:
and a switching step: a switch between one end of one or more absorption units and the acquisition unit is opened,
collecting; the collecting unit is used for collecting the gas,
testing SO 2 Concentration step: SO (SO) 2 Test unit for testing SO in gas 2 Is used for the concentration of (a),
step of testing sulfate ion concentration: the absorption unit absorbs SO in the gas 2 And SO 3 And SO is combined with 2 And SO 3 Converting the sulfate ions into sulfate ions, and testing the concentration of the sulfate ions by a sulfate ion testing unit;
the analysis step: the analysis unit is based on the concentration of sulfate ions, the SO 2 SO in gas tested by test unit 2 Concentration of SO in the gas is calculated 3 Is a concentration of (2); and
And (3) continuous testing: closing the switch between one end of one or more absorption units and the acquisition unit, opening the switch between one end of another one or more absorption units and the acquisition unit, and repeating the acquisition steps and the SO test 2 A concentration step, a sulfate ion concentration testing step and an analysis step.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300198A (en) * | 2004-04-07 | 2005-10-27 | Taiyo Nippon Sanso Corp | Low-concentration hydrogen sulfide analysis method |
| JP2006317207A (en) * | 2005-05-11 | 2006-11-24 | Shikoku Res Inst Inc | Sulfur trioxide concentration continuous measurement method and instrument |
| JP2011149727A (en) * | 2010-01-19 | 2011-08-04 | Babcock Hitachi Kk | Method and instrument for measuring metal mercury |
| CN103472061A (en) * | 2013-08-27 | 2013-12-25 | 浙江大学 | Device and method for detecting sulfur trioxide in flue gas on line |
| KR101359940B1 (en) * | 2013-06-24 | 2014-02-10 | 주식회사 위드텍 | Stack exhaust gas online monitoring system |
| CN103808878A (en) * | 2012-11-13 | 2014-05-21 | 陈柄宇 | Testing method for influences of different sulfate ion concentrations on anti-scaling performance |
| CN105352784A (en) * | 2015-12-08 | 2016-02-24 | 东南大学 | Sampling method and device for testing concentration of SO3 acid mist in wet desulfuration flue gas |
| CN209280659U (en) * | 2018-11-30 | 2019-08-20 | 杨君文 | Continuous monitoring SO3Concentration device |
-
2018
- 2018-11-30 CN CN201811457079.5A patent/CN109387595B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300198A (en) * | 2004-04-07 | 2005-10-27 | Taiyo Nippon Sanso Corp | Low-concentration hydrogen sulfide analysis method |
| JP2006317207A (en) * | 2005-05-11 | 2006-11-24 | Shikoku Res Inst Inc | Sulfur trioxide concentration continuous measurement method and instrument |
| JP2011149727A (en) * | 2010-01-19 | 2011-08-04 | Babcock Hitachi Kk | Method and instrument for measuring metal mercury |
| CN103808878A (en) * | 2012-11-13 | 2014-05-21 | 陈柄宇 | Testing method for influences of different sulfate ion concentrations on anti-scaling performance |
| KR101359940B1 (en) * | 2013-06-24 | 2014-02-10 | 주식회사 위드텍 | Stack exhaust gas online monitoring system |
| CN103472061A (en) * | 2013-08-27 | 2013-12-25 | 浙江大学 | Device and method for detecting sulfur trioxide in flue gas on line |
| CN105352784A (en) * | 2015-12-08 | 2016-02-24 | 东南大学 | Sampling method and device for testing concentration of SO3 acid mist in wet desulfuration flue gas |
| CN209280659U (en) * | 2018-11-30 | 2019-08-20 | 杨君文 | Continuous monitoring SO3Concentration device |
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