CN203881376U - On-line high-concentration sulfur dioxide flue gas monitoring instrument - Google Patents
On-line high-concentration sulfur dioxide flue gas monitoring instrument Download PDFInfo
- Publication number
- CN203881376U CN203881376U CN201420303625.0U CN201420303625U CN203881376U CN 203881376 U CN203881376 U CN 203881376U CN 201420303625 U CN201420303625 U CN 201420303625U CN 203881376 U CN203881376 U CN 203881376U
- Authority
- CN
- China
- Prior art keywords
- resistance
- arm
- display instrument
- sulfur dioxide
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000003546 flue gas Substances 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 18
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 7
- 239000001175 calcium sulphate Substances 0.000 claims description 6
- 235000011132 calcium sulphate Nutrition 0.000 claims description 6
- 238000006253 efflorescence Methods 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 206010037844 rash Diseases 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an on-line high-concentration sulfur dioxide flue gas monitoring instrument which comprises a demisting dryer, a flow meter, a self-operated flow regulation valve, a signal processor, a data processor, a flow display instrument, a concentration display instrument, a mass display instrument, and a thermal conductivity cell. The outlet of the demisting dryer is sequentially connected with the flow meter, the self-operated flow regulation valve and the thermal conductivity cell. A temperature measuring element, a heating coil and a Wheatstone bridge are arranged in the thermal conductivity cell. The temperature measuring element and the heating coil are electrically connected with the signal processor. The input end of the signal processor is connected with the output end of the Wheatstone bridge. The output end of the signal processor is connected with the concentration display instrument. The flow display instrument is connected with the flow meter. The flow display instrument and the concentration display instrument are connected with the input end of the data processor. The mass display instrument is connected with the output end of the data processor. By adopting the on-line high-concentration sulfur dioxide flue gas monitoring instrument of the utility model, the flow and concentration of sulfur dioxide can be monitored, and the mass of sulfur dioxide can be monitored.
Description
Technical field
The utility model relates to on-line monitoring instrument, relates in particular to a kind of high concentration sulfur dioxide flue gas on-line monitoring equipment.
Background technology
In the technique of preparing sulfuric acid, conventional sulphur, troilite and pyrite concentrate are raw material, through boiling roaster, obtain the sulphuric dioxide of high concentration; Also can be raw material with ardealite, taking coke or sulphur as reductive agent, by pyrolytic, obtain the sulphuric dioxide of high concentration; Or with the SO of flue gas during smelting
2for raw material, then obtain industrial sulphuric acid by conversion and absorption section.And before entering conversion section, need monitoring SO
2concentration is allocated air air quantity into calculating and is met the demand transforming, sulfuric acid plant is through long-time running simultaneously, may there is the potential safety hazards such as corrosion, need to carry out Real Time Monitoring to the sulfur dioxide concentration of converter, each heat interchanger and pipeline gas phase, analyze the serviceable condition of judgment device by the data that are associated.
Sulphuric dioxide checkout equipment is in the market mainly used for detecting the concentration of low-concentration sulfur dioxide in flue gas, judge whether flue gas reaches the environmental protection equipment of emission standard, and comparatively rare for detection of the checkout equipment of the sulfur dioxide gas of high concentration, and common sulphuric dioxide checkout equipment can not detect the quality of sulphuric dioxide, " quality " here refers to the number of the contained material of object.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high concentration sulfur dioxide flue gas on-line monitoring instrument, can monitor flow and the concentration of sulphuric dioxide, can monitor again the quality of sulphuric dioxide.
The utility model solves the high concentration sulfur dioxide flue gas on-line monitoring instrument that its technical matters adopts, and comprises demist exsiccator, flowmeter, self-operated flow regulator, signal processor, data processor, Flow Measurement Display Meter, concentration display instrument, quality display instrument and conductance cell; Described demist dryer export connection traffic meter, self-operated flow regulator and conductance cell successively; In described conductance cell, be provided with temperature element, heater coil and resistance bridge; Described temperature element and heater coil are all electrically connected with signal processor, the input end of described signal processor is connected with the output terminal of described resistance bridge, the output terminal of described signal processor is connected with described concentration display instrument, described Flow Measurement Display Meter is connected with described flowmeter, described Flow Measurement Display Meter is all connected with the input end of data processor with described concentration display instrument, and described quality display instrument is connected with the output terminal of described data processor.
Further, described resistance bridge comprises the first fixed resistance, the second fixed resistance, working arm, participation arm and direct voltage source; Joining end to end of described the first fixed resistance, the second fixed resistance, working arm and participation arm, first utmost point of described direct voltage source is connected between the first fixed resistance and working arm, second utmost point of described direct voltage source is connected to the second fixed resistance and participates between arm, first utmost point of described resistance bridge output terminal is connected between the first fixed resistance and the second fixed resistance, and second utmost point of described resistance bridge output terminal is connected to working arm and participates between arm; Described the first fixed resistance equates with the resistance of described the second fixed resistance, and described working arm is the thermal resistance that resistance equates with the resistance in described participation arm, in described participation arm, fills calibrating gas, and tested gas flow is crossed described working arm.
Further, described thermal resistance is platinum resistance.
Further, described demist exsiccator comprises acid mist separation chamber and hothouse, and fixing glass fiber cloth in described acid mist separation chamber is filled the block calcium sulphate without efflorescence in described hothouse.
The beneficial effects of the utility model are: high concentration sulfur dioxide flue gas on-line monitoring instrument of the present utility model can be monitored flow and the concentration of sulphuric dioxide, can monitor again the quality of sulphuric dioxide.There is DC signal output, real-time curve, history curve record and automatic protection functions, without external recording instrument without paper.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, indicate: 1-demist exsiccator, 2-flowmeter, 3-self-operated flow regulator, 4-temperature element, 5-heater coil, 6-resistance bridge, 7-signal processor, 8-data processor, 9-Flow Measurement Display Meter, 10-concentration display instrument, 11-quality display instrument, 12-conductance cell, 131-the first fixed resistance, 132-the second fixed resistance, 14-working arm, 15-participates in arm.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, high concentration sulfur dioxide flue gas on-line monitoring instrument of the present utility model, comprises demist exsiccator 1, flowmeter 2, self-operated flow regulator 3, signal processor 7, data processor 8, Flow Measurement Display Meter 9, concentration display instrument 10, quality display instrument 11 and conductance cell 12; Described demist exsiccator 1 exports connection traffic meter 2, self-operated flow regulator 3 and conductance cell 12 successively; In described conductance cell 12, be provided with temperature element 4, heater coil 5 and resistance bridge 6; Described temperature element 4 and heater coil 5 are all electrically connected with signal processor 7, the input end of described signal processor 7 is connected with the output terminal of described resistance bridge 6, the output terminal of described signal processor 7 is connected with described concentration display instrument 10, described Flow Measurement Display Meter 9 is connected with described flowmeter 2, described Flow Measurement Display Meter 9 is all connected with the input end of data processor 8 with described concentration display instrument 10, and described quality display instrument 11 is connected with the output terminal of described data processor 8.Tested gas is successively by entering conductance cell 12 after demist exsiccator 1, flowmeter 2, self-operated flow regulator 3, and tested gas is removed acid mist by described demist exsiccator 1, and be dried, tested gas is by flowmeter 2, and described Flow Measurement Display Meter 9 by the sulphuric dioxide flow indication by flowmeter 2 out, the tested gas that described self-operated flow regulator 3 is controlled certain flow flows in conductance cell 12, the temperature of conductance cell 12 is controlled at temperature constant state by described signal processor 7, preferably temperature is 60 DEG C, allow ± error of 1 DEG C, detect the temperature in conductance cell 12 by temperature element 4, temperature element 4 passes to signal processor 7 by temperature value after temperature being detected, signal processor 7 compares the temperature detecting and design temperature, when the temperature detecting is during lower than design temperature, 7 of signal processors are controlled heater coil 5 heating makes temperature rise arrive design temperature, in the time that the temperature detecting is in the temperature range of setting, 7 of signal processors are controlled heater coil 5 and are stopped heating, the concentration of sulphuric dioxide is converted into electric signal by resistance bridge 6 in described conductance cell 12, and pass to signal processor 7, electric signal is processed amplification by described signal processor 7, provides 4-20mA standard current signal to export and drive concentration display instrument 10 to show the concentration of sulphuric dioxide, described data processor 8 processes by gather the data on flows and the concentration data that come from described Flow Measurement Display Meter 9 and described concentration display instrument 10 quality that obtains sulphuric dioxide, and drives described quality display instrument 11 to show the quality of sulphuric dioxide.
As preferred embodiment, described resistance bridge 6 comprises the first fixed resistance 131, the second fixed resistance 132, working arm 14, participates in arm 15 and direct voltage source; Joining end to end of described the first fixed resistance 131, the second fixed resistance 132, working arm 14 and participation arm 15, first utmost point of described direct voltage source is connected between the first fixed resistance 131 and working arm 14, second utmost point of described direct voltage source is connected to the second fixed resistance 132 and participates between arm 15, first utmost point of described resistance bridge output terminal is connected between the first fixed resistance 131 and the second fixed resistance 132, and second utmost point of described resistance bridge output terminal is connected to working arm 14 and participates between arm 15; Described the first fixed resistance 131 equates with the resistance of described the second fixed resistance 132, and described working arm 14 is the thermal resistance that resistance equates with the resistance in described participation arm 15, in described participation arm 15, fills calibrating gas, and tested gas flow is crossed described working arm 14.The work of conductance cell is based on there being different thermal conductivity coefficients between different component and carrier gas, when conductance cell work, keep conductance cell pond body constant temperature, because calibrating gas is different from the pyroconductivity of tested gas, thereby the temperature of thermal resistance changes, and cause resistance to change, be that the thermal resistance resistance of tested gas place working arm 14 and the thermal resistance resistance of calibrating gas place participation arm 15 are unequal, thereby cause electric bridge imbalance, output voltage signal, signal processor 7 just can calculate the concentration of tested gas by the size of voltage signal.Wherein first of direct voltage source can be extremely anodal time, the second negative pole very of direct voltage source; When first of direct voltage source extremely can be negative pole, direct voltage source second very anodal.
The temperature sensing material kind that thermal resistance is conventional is more, for example: platinum, copper, nickel, iron etc., in the utility model, the thermistor of positive temperature coefficient (PTC) and the thermistor of negative temperature coefficient all can adopt.Because platinum resistance measuring accuracy is high, stable performance, and along with the rising platinum resistance resistance of temperature becomes at the uniform velocity to increase, therefore, as preferred embodiment, described thermal resistance is platinum resistance.
Be clean dry in order to make detected gas, as preferred embodiment, described demist exsiccator 1 comprises acid mist separation chamber and hothouse, and fixing glass fiber cloth in described acid mist separation chamber is filled the block calcium sulphate without efflorescence in described hothouse.Glass fabric plays a part filtration, leach the particles such as detected dust in other, because glass fabric is compared with other fiber cloth, there is the features such as thermotolerance is strong, corrosion resistivity good, physical strength is high, Abherent, therefore preferably use glass fabric; Play a part dryly without the block calcium sulphate of efflorescence, in hothouse, can fill any drying agent, but because the block calcium sulphate without efflorescence can not produce dust, therefore preferably use the block calcium sulphate without efflorescence.
Claims (4)
1. high concentration sulfur dioxide flue gas on-line monitoring instrument, is characterized in that: comprise demist exsiccator (1), flowmeter (2), self-operated flow regulator (3), signal processor (7), data processor (8), Flow Measurement Display Meter (9), concentration display instrument (10), quality display instrument (11) and conductance cell (12), described demist exsiccator (1) exports connection traffic meter (2), self-operated flow regulator (3) and conductance cell (12) successively, in described conductance cell (12), be provided with temperature element (4), heater coil (5) and resistance bridge (6), described temperature element (4) and heater coil (5) are all electrically connected with signal processor (7), the input end of described signal processor (7) is connected with the output terminal of described resistance bridge (6), the output terminal of described signal processor (7) is connected with described concentration display instrument (10), described Flow Measurement Display Meter (9) is connected with described flowmeter (2), described Flow Measurement Display Meter (9) is all connected with the input end of data processor (8) with described concentration display instrument (10), described quality display instrument (11) is connected with the output terminal of described data processor (8).
2. high concentration sulfur dioxide flue gas on-line monitoring instrument as claimed in claim 1, is characterized in that: described resistance bridge (6) comprises the first fixed resistance (131), the second fixed resistance (132), working arm (14), participates in arm (15) and direct voltage source, described the first fixed resistance (131), the second fixed resistance (132), joining end to end of working arm (14) and participation arm (15), first utmost point of described direct voltage source is connected between the first fixed resistance (131) and working arm (14), second utmost point of described direct voltage source is connected to the second fixed resistance (132) and participates between arm (15), first utmost point of described resistance bridge output terminal is connected between the first fixed resistance (131) and the second fixed resistance (132), second utmost point of described resistance bridge output terminal is connected to working arm (14) and participates between arm (15), described the first fixed resistance (131) equates with the resistance of described the second fixed resistance (132), described working arm (14) is the thermal resistance that resistance equates with the resistance in described participation arm (15), in described participation arm (15), fill calibrating gas, tested gas flow is crossed described working arm (14).
3. high concentration sulfur dioxide flue gas on-line monitoring instrument as claimed in claim 2, is characterized in that: described thermal resistance is platinum resistance.
4. the high concentration sulfur dioxide flue gas on-line monitoring instrument as described in any one claim in claim 1 to 3, it is characterized in that: described demist exsiccator (1) comprises acid mist separation chamber and hothouse, fixing glass fiber cloth in described acid mist separation chamber is filled the block calcium sulphate without efflorescence in described hothouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303625.0U CN203881376U (en) | 2014-06-09 | 2014-06-09 | On-line high-concentration sulfur dioxide flue gas monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303625.0U CN203881376U (en) | 2014-06-09 | 2014-06-09 | On-line high-concentration sulfur dioxide flue gas monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881376U true CN203881376U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420303625.0U Expired - Lifetime CN203881376U (en) | 2014-06-09 | 2014-06-09 | On-line high-concentration sulfur dioxide flue gas monitoring instrument |
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| CN (1) | CN203881376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402230A (en) * | 2017-08-01 | 2017-11-28 | 昆明理工大学 | One tobacco articles smokescope measurement apparatus and method |
-
2014
- 2014-06-09 CN CN201420303625.0U patent/CN203881376U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402230A (en) * | 2017-08-01 | 2017-11-28 | 昆明理工大学 | One tobacco articles smokescope measurement apparatus and method |
| CN107402230B (en) * | 2017-08-01 | 2023-09-26 | 昆明理工大学 | Tobacco product smoke concentration measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |