CN116538494A - Boiler water quality dynamic automatic monitoring and pollution discharge feedback control system - Google Patents
Boiler water quality dynamic automatic monitoring and pollution discharge feedback control system Download PDFInfo
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- CN116538494A CN116538494A CN202310516220.9A CN202310516220A CN116538494A CN 116538494 A CN116538494 A CN 116538494A CN 202310516220 A CN202310516220 A CN 202310516220A CN 116538494 A CN116538494 A CN 116538494A
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- electromagnetic valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 230
- 229910001868 water Inorganic materials 0.000 title claims abstract description 230
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000008234 soft water Substances 0.000 claims abstract description 23
- 239000000460 chlorine Substances 0.000 claims abstract description 16
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000008399 tap water Substances 0.000 claims abstract description 13
- 235000020679 tap water Nutrition 0.000 claims abstract description 12
- 239000010865 sewage Substances 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 52
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 40
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 31
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 20
- 239000010452 phosphate Substances 0.000 claims description 17
- 229910019142 PO4 Inorganic materials 0.000 claims description 16
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 13
- 239000011780 sodium chloride Substances 0.000 claims description 13
- AMMWFYKTZVIRFN-UHFFFAOYSA-N sodium 3-hydroxy-4-[(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonic acid Chemical compound [Na+].C1=CC=CC2=C(O)C(N=NC3=C4C=CC(=CC4=C(C=C3O)S(O)(=O)=O)[N+]([O-])=O)=CC=C21 AMMWFYKTZVIRFN-UHFFFAOYSA-N 0.000 claims description 12
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- 229940012189 methyl orange Drugs 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 6
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 3
- 239000000446 fuel Substances 0.000 abstract description 7
- 239000000243 solution Substances 0.000 description 33
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 12
- 239000011575 calcium Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 7
- -1 phosphate radical Chemical class 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000012086 standard solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000002639 sodium chloride Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- OJKANDGLELGDHV-UHFFFAOYSA-N disilver;dioxido(dioxo)chromium Chemical compound [Ag+].[Ag+].[O-][Cr]([O-])(=O)=O OJKANDGLELGDHV-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/38—Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
- F22B37/565—Blow-down control, e.g. for ascertaining proper duration of boiler blow-down
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/80—Indicating pH value
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/221—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating pH value
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
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- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a boiler water quality dynamic automatic monitoring and pollution discharge quantity feedback control system, which comprises a boiler, a control center, a water storage tank and an automatic water processor, wherein the water storage tank is connected with the boiler; the automatic water processor is respectively provided with a tap water inlet pipe and a soft water outlet pipe; tap water enters the automatic water processor through the tap water inlet pipe, and the automatic water processor is communicated with the water storage tank through the soft water outlet pipe; the water storage tank is communicated with the boiler through a water supply pipeline; the soft water outlet pipe is respectively provided with a water hardness monitor and a water supply chlorine root monitor; a drain pipe and a sampler are respectively connected to the boiler; a sewage draining electromagnetic valve is arranged on the sewage draining pipe; and the sampler is respectively provided with a total alkalinity analyzer and a boiler water chlorine analyzer. The invention ensures that the water supply and the boiler water stably run, not only saves water resources, reduces scale generation and saves fuel, but also ensures that the boiler is more stable and safer, prolongs the service life of equipment and improves the efficiency.
Description
Technical Field
The invention relates to the technical field of steam boilers, in particular to a boiler water quality dynamic automatic monitoring and pollution discharge feedback control system.
Background
Along with the industrial production demand, a steam boiler is also an irreplaceable device of a factory, and the steam boiler refers to an industrial boiler for heating water to a certain parameter and producing high-temperature steam, the water is heated in a boiler barrel to become steam, and fire emits heat in a hearth, namely the principle of the steam boiler. Steam boilers are widely used in hospitals, laundry, food factories, pharmaceutical factories, hotels, and the like. The boiler production safety efficiency is determined by not only fuel, but also water supply and boiler water of a hearth, if the water quality is unqualified, scale is generated when the water quality is light, a pipeline is burnt through when the water quality is heavy, and boiler explosion is caused. So as to be a steam boiler, the water quality problem is very important; the most important medium of the steam boiler is water, which is divided into water supply and boiler water, the most of the water supply is an automatic water treatment bed at present, the boiler water is sampled from a boiler tail sampler manually, whether the content of the components in the boiler, the PH value, the total alkalinity and the chlorine radical content exceed the standards is detected, when the content exceeds the standards, a blow-off valve is manually opened for blow-off, water is re-supplemented, and different methods are produced for controlling the degree of blow-off amount according to different people.
Disclosure of Invention
The invention aims to provide a boiler water quality dynamic automatic monitoring and pollution discharge quantity feedback control system, which ensures that water supply and boiler water stably run, not only can save water resources and reduce scale generation and fuel, but also ensures that the boiler is more stable and safer, prolongs the service life of equipment and improves the efficiency.
The invention is realized by the following technical scheme:
a boiler water quality dynamic automatic monitoring and pollution discharge quantity feedback control system comprises a boiler, a control center, a water storage tank and an automatic water processor; the automatic water processor is respectively provided with a tap water inlet pipe and a soft water outlet pipe; tap water enters the automatic water processor through the tap water inlet pipe, and the automatic water processor is communicated with the water storage tank through the soft water outlet pipe; the water storage tank is communicated with the boiler through a water supply pipeline; wherein: the soft water outlet pipe is respectively provided with a water hardness monitor and a water supply chlorine root monitor; the water hardness monitor is used for monitoring soft water hardness; the water supply chloride monitor is used for monitoring the chloride ion content value of the soft water; a drain pipe and a sampler are respectively connected to the boiler; a sewage draining electromagnetic valve is arranged on the sewage draining pipe; the sampler is respectively provided with a total alkalinity analyzer and a boiler water chlorine analyzer; the total alkalinity analyzer is used for measuring the hardness value of the boiler water; the water chloride analyzer is used for measuring the chloride ion content value of the boiler water; the control center is respectively and electrically connected with the blowdown solenoid valve, the water quality hardness monitor, the water supply chlorine radical monitor, the total alkalinity analyzer and the boiler water chlorine radical analyzer.
Further, the water hardness monitor comprises a first reactor, a first water amount collecting tank, an ammonia-NaCl tank, a chrome black T tank and an EDTA solution tank; the first water volume collecting tank is communicated with the first reactor through a first water volume electromagnetic valve; the ammonia-NaCl tank is communicated with the first reactor through an ammonia-NaCl electromagnetic valve; the chrome black T tank is communicated with the first reactor through a chrome black T electromagnetic valve; the EDTA solution tank is communicated with the first reactor through an EDTA electromagnetic valve; the first reactor is provided with a first rotary spray head; the bottom of the first reactor is provided with a first vibrating spring; the bottom of the first reactor is connected with a hose.
Further, the feed water chlorine root monitor and the pot water chlorine root analyzer comprise a second reactor, a second water quantity collecting tank, a second phenolphthalein solution tank, a silver nitrate solution tank, a second standard sulfuric acid solution tank and a potassium chromate solution tank; the second water quantity collecting tank is communicated with the second reactor through a second water quantity electromagnetic valve; the second phenolphthalein solution tank is communicated with the second reactor through a second phenolphthalein electromagnetic valve; the silver nitrate solution tank is communicated with the second reactor through a silver nitrate electromagnetic valve; the second standard sulfuric acid solution tank is communicated with the second reactor through a second standard sulfuric acid electromagnetic valve; the potassium chromate solution tank is communicated with the second reactor through a potassium chromate electromagnetic valve; a second PH tester is arranged in the second reactor; a second rotary spray head is arranged on the second reactor; the bottom of the second reactor is provided with a second vibrating spring; and the bottom of the second reactor is connected with a hose.
Further, the total alkalinity analyzer comprises a third reactor, a third water amount collecting tank, a third phenolphthalein solution tank, a third standard sulfuric acid solution tank and a methyl orange solution tank; the third water amount collecting tank is communicated with the third reactor through a third water amount electromagnetic valve; the third phenolphthalein solution tank is communicated with the third reactor through a third phenolphthalein electromagnetic valve; the third standard sulfuric acid solution tank is communicated with the third reactor through a third standard sulfuric acid electromagnetic valve; the methyl orange solution tank is communicated with the third reactor through a methyl orange electromagnetic valve; a third PH tester is arranged in the third reactor; a third rotary spray head is arranged on the third reactor; the bottom of the third reactor is provided with a third vibrating spring; and the bottom of the third reactor is connected with a hose.
Further, a phosphate powder tank is connected to the water supply pipeline through a phosphate electromagnetic valve; the control center is electrically connected with the phosphate radical electromagnetic valve.
Further, a liquid level meter is installed on the boiler.
The invention has the beneficial effects that:
the automatic water processor monitors the accumulated degree of water flow under the condition of set time or flow, can realize automatic backwashing and forward washing, and ensures the stability of water supply. The boiler water is always boiled as the boiler body, the boiler water is required to be manually and regularly checked and judged by naked eyes, after the boiler water is found to be unqualified through rough judgment, a drain valve is opened by some boiler workers to drain a lot of water, water is wasted, and the water is added again, so that fuel is wasted. The stable operation of water supply and boiler water not only can save water resources, reduce scale generation and save fuel, but also can make the boiler more stable and safe, prolong the service life of equipment and improve the efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a boiler water quality dynamic automatic monitoring and pollution discharge feedback control system according to an embodiment;
FIG. 2 is a schematic diagram of the overall structure of the water hardness monitor according to the embodiment;
FIG. 3 provides an overall schematic diagram of a feedwater chlorine monitor and a boiler water chlorine analyzer;
the embodiment of fig. 4 provides a schematic overall structure of the total alkalinity analyzer.
In the accompanying drawings: 1-a boiler; 2-a control center; 3-a water storage tank; 4-an automatic water treatment device; 5-a water hardness monitor; 6-a feed water chlorine monitor; 7-a total alkalinity analyzer; 8-pot water chlorine radical analyzer; a 9-phosphate powder tank; 10-a water supply pipeline; 11-a blow-down pipe; 12-a sampler; 13-a blowdown electromagnetic valve; 14-a liquid level meter; 41-tap water inlet pipe; 42-soft water outlet pipe; 51-a first reactor; 52-a first water collection tank; 53-ammonia-NaCl tank; 54-chrome black T tank; 56-a first water quantity electromagnetic valve; 57-ammonia-NaCl solenoid valve; 58-chrome black T solenoid valve; 59-EDTA solenoid valve; 510-first rotary sprayer; 511-a first vibrating spring; 71-a third reactor; 72-a third water collection tank; 73-a third phenolphthalein solution tank; 74-a third standard sulfuric acid solution tank; a 75-methyl orange solution tank; 76-a third water quantity solenoid valve; 77-a third phenolphthalein solenoid valve; 78-a third standard sulfuric acid solenoid valve; 79-methyl orange solenoid valve; 710-a third PH tester; 711-third rotary nozzle; 712-third vibration spring; 91-phosphate solenoid valve; 101-a second reactor; 102-a second water collection tank; 103-a second phenolphthalein solution tank; 104-a silver nitrate solution tank; 105-a second standard sulfuric acid solution tank; 106-potassium chromate solution tank; 107-a second water volume solenoid valve; 108-a second phenolphthalein solenoid valve; 109-silver nitrate solenoid valve; 110-a second standard sulfuric acid solenoid valve; a 111-potassium chromate solenoid valve; 112-a second PH tester; 113-a second rotary sprayer; 114-a second vibrating spring.
Detailed Description
The present invention will now be described in detail with reference to the drawings and the detailed description thereof, wherein the invention is illustrated by the schematic drawings and the detailed description thereof, which are included to illustrate and not to limit the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back, upper, lower, top, bottom … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicators are correspondingly changed.
In the present invention, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first", "a second" may include at least one such feature, either explicitly or implicitly; in addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to FIG. 1, a boiler water quality dynamic automatic monitoring and pollution discharge quantity feedback control system comprises a boiler 1, a control center 2, a water storage tank 3 and an automatic water processor 4; the automatic water treatment device 4 is respectively provided with a tap water inlet pipe 41 and a soft water outlet pipe 42; tap water enters the automatic water treatment device 4 through the tap water inlet pipe 41, and the automatic water treatment device 4 is communicated with the water storage tank 3 through the soft water outlet pipe 42; the water storage tank 3 is communicated with the boiler 1 through a water supply pipeline 10; wherein: the soft water outlet pipe 42 is respectively provided with a water quality hardness monitor 5 and a water supply chlorine monitor 6; the water hardness monitor 5 is used for monitoring soft water hardness; the feed water chloride monitor 6 is used for monitoring the chloride ion content value of the soft water; a drain pipe 11 and a sampler 12 are respectively connected to the boiler 1; a blowdown electromagnetic valve 13 is arranged on the blowdown pipe 11; the sampler 12 is respectively provided with a total alkalinity analyzer 7 and a boiler water chlorine analyzer 8; the total alkalinity analyzer 7 is used for measuring the hardness value of the boiler water; the water chloride analyzer is used for measuring the chloride ion content value of the boiler water; the control center 2 is respectively and electrically connected with the blowdown solenoid valve 13, the water quality hardness monitor 5, the water supply chlorine radical monitor 6, the total alkalinity analyzer 7 and the boiler water chlorine radical analyzer 8. The control center 2 is provided with a control screen, and the hardness, the valve state and the execution condition of the water can be displayed on the control screen; the control screen can display the information of phenolphthalein alkalinity, total alkalinity, cl root, sewage discharge amount, valve state, execution condition and the like of the boiler water.
Referring to fig. 2, in particular, in the embodiment, the water hardness monitor 5 includes a first reactor 51, a first water volume collecting tank 52, an ammonia-NaCl tank 53, a chrome black T tank 54, and an EDTA solution tank 55; the first water amount collecting tank 52 is communicated with the first reactor 51 through a first water amount electromagnetic valve 56; the ammonia-NaCl tank 53 communicates with the first reactor 51 through an ammonia-NaCl solenoid valve 57; the chrome black T tank 54 is communicated with the first reactor 51 through a chrome black T solenoid valve 58; the EDTA solution tank 55 is communicated with the first reactor 51 through an EDTA solenoid valve 59; the first reactor 51 is provided with a first rotary nozzle 510; the bottom of the first reactor 51 is provided with a first vibrating spring 511; a hose is connected to the bottom of the first reactor 51.
1. Dynamic monitoring principle for boiler water supply
The working principle of the feed water processor is basically the same, i.e. the hardness of the removed water (Ca 2+ 、Mg 2+ ) Ca in water is removed by resin 2+ 、Mg 2+ With Na in the resin + Exchange reaction is carried out to soften the water.
2RNa+Ca 2+ (Mg 2+ )→R 2 Ca(R 2 Mg)+2Na +
When the reaction reaches the failure of the resin, na is added by common salt by utilizing the reversibility of the ion exchange reaction + And then with Ca in the resin 2+ 、Mg 2+ And carrying out exchange reaction to recover the softening capacity of the resin.
R 2 Ca(R 2 Mg)+2Na + →2RNa+Ca 2+ (Mg 2+ )
In this embodiment, the hardness of soft water needs to be dynamically monitored, the hardness of soft water is controlled within 0.03mol/L, water is sampled from the automatic water treatment outlet every half an hour, the hardness of soft water is monitored by adopting the water quality hardness monitor 5, if the hardness exceeds 0.03mol/L, the automatic water treatment machine is turned off, the resin regeneration state is realized, and the rest state is carried out after the treatment. Meanwhile, the other water treatment machine is started to work, so that the state that the water supply is always qualified is ensured.
Water hardness monitoring principle:
in the measured solution with the PH of 10.0+/-0.1, taking chrome black T as an indicator, titrating by using an ethylenediamine tetraacetic acid disodium salt (EDTA) standard solution, and finally changing into blue from the original purple chelate formed by calcium magnesium ions and the chrome black T to obtain the final point, and recording the EDTA volume to obtain the hardness content in water.
In the embodiment, 100mL of water sample is adopted each time, the device automatically discharges and washes out the container, and 5mL of ammonia-NaCl solution is added simultaneously when 100mL of water sample is put in, and simultaneously the first vibrating spring at the bottom shakes and mixes uniformly. The chrome black T valve was opened and 3mL of solution was added. Continuously and uniformly mixing, finally titrating according to 1mL of EDTA each time, measuring blue wavelength by using light wavelength, namely closing an EDTA valve, and recording the current EDTA reaction quantity by a foreground to obtain XX mmol/L.
If the value is larger than 0.03mmol/L, stopping action is performed, the stopping action is fed back to the water processor, the current water processor is closed, and the regenerated resin is realized; and simultaneously, opening another water processor to work.
The hardness can be dynamically measured, the hardness data is fed back in real time, if the hardness data is more than 0.03mmol/L for two times in one day, importance is required to be attached, whether the machine does not operate in a normal state or in which places are not working can be quickly obtained.
When the concentration of the phosphate is more than 0.03 molmmmol/L, trisodium phosphate can be automatically converted and added for chemical treatment, so that the boiler water keeps a certain amount of phosphate radical, and under the conditions of boiling and strong alkalinity of the boiler water, calcium ions and phosphate radical ions in the boiler water are generated
10Ca 2+ +6PO 4 3- +2OH＝3Ca 3 (PO 4 ) 2 Ca(OH)2↓
The generated alkaline calcium phosphate is soft water slag and is easy to be discharged along with boiler pollution discharge. The amount of phosphate added at run time can be according to the formula:
Y＝4(28.5YD+eP)/∈
wherein YD is the residual hardness of water supply, e is PO to be maintained in the boiler water 4 3- Is specified in GB1576-2018 as 10 to 30mg/L; the epsilon is the purity of the industrial trisodium phosphate, typically 92% to 98%;4 is Na 3 PO 4 12H 2 O and PO 4 3- Molar mass ratio of (2); 28.5 is a catalyst for the reaction of 1mol (1/2 Ca 2+ ) Becomes Ca 10 (OH) 2 (PO 4 ) 6 Desired PO 4 3- G/mol;
the Y g/t is obtained by utilizing a formula and is multiplied by the total water quantity per shift to obtain the consumption of phosphate radical, after the hardness is measured, the equipment makes a judging action, calculates the required phosphate radical quantity according to the calculated hardness, and fully beats into a boiler according to shaking so as to realize dynamic adjustment and reasonably calculate the distribution dosage.
Referring to fig. 3, in particular, in this embodiment, the feedwater chloride monitor 6 and the pot water chloride analyzer 8 each include a second reactor 101, a second water amount collection tank 102, a second phenolphthalein solution tank 103, a silver nitrate solution tank 104, a second standard sulfuric acid solution tank 105, and a potassium chromate solution tank 106; the second water amount collecting tank 102 is communicated with the second reactor 101 through a second water amount electromagnetic valve 107; the second phenolphthalein solution tank 103 is communicated with the second reactor 101 through a second phenolphthalein electromagnetic valve 108; the silver nitrate solution tank 104 is communicated with the second reactor 101 through a silver nitrate electromagnetic valve 109; the second standard sulfuric acid solution tank 105 is communicated with the second reactor 101 through a second standard sulfuric acid solenoid valve 110; the potassium chromate solution tank 106 is communicated with the second reactor 101 through a potassium chromate electromagnetic valve 111; a second PH tester 112 is installed in the second reactor 101; a second rotary spray nozzle 113 is arranged on the second reactor 101; the bottom of the second reactor 101 is provided with a second vibrating spring 114; a hose is connected to the bottom of the second reactor 101.
Referring to fig. 4, specifically, in the embodiment, the total alkalinity analyzer 7 includes a third reactor 71, a third water amount collection tank 72, a third phenolphthalein solution tank 73, a third standard sulfuric acid solution tank 74 and a methyl orange solution tank 75; the third water amount collecting tank 72 is communicated with the third reactor 71 through a third water amount electromagnetic valve 76; the third phenolphthalein solution tank 73 is communicated with the third reactor 71 through a third phenolphthalein electromagnetic valve 77; the third standard sulfuric acid solution tank 74 is communicated with the third reactor 71 through a third standard sulfuric acid solenoid valve 78; the methyl orange solution tank 75 is communicated with the third reactor 71 through a methyl orange electromagnetic valve 79; a third PH tester 710 is installed in the third reactor 71; the third reactor 71 is provided with a third rotary nozzle 711; a third vibrating spring 712 is arranged at the bottom of the third reactor 71; a hose is connected to the bottom of the third reactor 71.
Specifically, in this embodiment, the water supply pipe 10 is connected to a phosphate powder tank 9 through a phosphate electromagnetic valve 91; the control center 2 is electrically connected to the phosphate solenoid valve 91.
Boiler water dynamic monitoring principle of boiler
The hardness of the water supply determines whether the boiler is easy to grow scale, and the dosage and the discharge capacity of the boiler are determined according to the quality of the boiler water, and the dosage can enable scaling substances (mainly calcium and magnesium salts) in the boiler water to generate chemical or physical chemical reactions to generate loose water slag, so that the purposes of preventing or relieving the scaling and corrosion prevention of the boiler are achieved through the boiler discharge.
In the embodiment, the discharge amount of the sewage disposal valve is controlled by dynamically monitoring the phenolphthalein alkalinity, the methyl orange alkalinity, the total alkalinity and the PH value and the chloride radical.
The total alkalinity is the sum of phenolphthalein alkalinity and methyl orange alkalinity, H in acid + The pH value of the end point is equal to 8.3, the total alkalinity is the amount measured by taking methyl orange as an indicator, and the pH value of the end point is equal to 4.2. The principle is as follows:
H + +OH - ＝H 2 O
taking out a certain amount of water from a boiler sampler, controlling the amount of water to be 100mL after 2 minutes, adding 1mL of phenolphthalein solution, titrating with sulfuric acid standard solution, recording the amount a when the PH tester shows PH=8.3, stopping recording the amount b when the titration is continued until PH=4.2 with sulfuric acid standard solution, feeding back the data to a platform phenolphthalein alkalinity of a mmol/L, and recording the total alkalinity of a+b mmol/L. And if the total alkalinity is 6-24mmol/L, the alarm is normal, otherwise, the alarm is given.
The principle of chlorine radical measurement is that in neutral or weak alkaline solution, chloride reacts with silver nitrate to produce white silver chloride precipitate, and excessive silver nitrate reacts with potassium chromate to produce brick red silver chromate precipitate, so that the solution is orange, i.e. the titration end point is completed.
2AgNO 3 +K 2 CrO 4 ＝Ag 2 CrO 4 ↓+2KNO 3
100mL of water sample was taken out in the boiler sampler, 1mL of phenolphthalein solution was added, and sulfuric acid standard solution was titrated to colorless, and when ph=7, the sulfuric acid standard solution valve was closed. And (3) opening a silver nitrate valve, titrating to brick red, feeding back the brick red sediment according to a wavelength measuring instrument, closing the silver nitrate valve, and recording the dosage of silver nitrate to obtain SS mg/L.
Similarly, kk mg/L can be measured for chlorine radicals in the feed water.
The data from the above feedwater and boiler can be formulated according to the blow down rate:
P＝D p /D×100％
p-pollution discharge rate in the formula,%; d (D) p -the amount of blowdown, t/h; d is the evaporation capacity of the boiler, and t/h.
Because cl - The material is not precipitated or decomposed in the water supply and the boiler, and the material balance relation shows that the amount of the material in the boiler along with the water supply is equal to the sum of the amount discharged along with sewage and the amount taken away by saturated steam, so that the material can be obtained:
P＝ cl - feeding of /( cl - Pot with cover - cl - Feeding of ) × 100％
In the formula, cl - Feeding of mg/L for chloride ion content in the feed water;
cl - pot with cover The content of chloride ions in the boiler water is mg/L;
if the measured cl of feedwater and boiler water in the plant - And substituting the content into the formula to obtain the P pollution discharge rate.
According to GB1576-2018, the content of dissolved solids of the boiler is less than XXmg/L, and according to the relation that the content of dissolved solids and chloride ions of boiler water is proportional, the chloride ions of the boiler water are basically constant, so that the boiler water can control the content of the chloride ions to be:
RG pot/cl - Pot with cover =rg label/cl - Label (C) Can obtain cl - Label (C) Can obtain
Paccuse=cl - Feeding of /(cl - Label (C) -cl - Feeding of )×100％
Under the condition of national control rate standard, the water discharge rate is generally controlled to be 5 to 10 percent, for example, a specific boiler can be checked and standardized to obtain the dissolved solids of the boiler so as to calculate the discharge rate, and the water discharge rate can be obtained as follows:
D p ＝P×D×100％
according to the above, assuming an 8 ton steam boiler with a blowdown rate of 6%, blowdown is performed once every 4 hours, the blowdown amount per time is: after 4 hours, the boiler needs to discharge 1.92t and is quantitatively controlled according to a blow-down valve after 0.06×8×4=1.92 t. If the pollution discharge rate monitored after the reactor is smaller than the national standard pollution discharge rate, the pollution discharge is increased, the pollution discharge rate is larger than the national standard pollution discharge rate, the boiler water is ensured to be qualified, the boiler water with higher salt content and the precipitated mud and dirt can be reasonably and quantitatively discharged, and the clean water supply with low salt content is supplemented, so that the boiler efficiency is higher and the production is safer to operate.
Specifically, in this embodiment, the boiler 1 is provided with a liquid level gauge 14. It should be noted that the highest safe water level, the normal water level, and the lowest safe water level in the boiler 1 are easily observed by providing the liquid level gauge 14.
The beneficial effects of the embodiment of the application are as follows: the automatic water processor 4 monitors the accumulated degree of water flow under the condition of set time or flow, can realize automatic backwashing and forward washing, and ensures the stability of water supply. The boiler water is always boiled as the boiler body, the boiler water is required to be manually and regularly checked and judged by naked eyes, after the boiler water is found to be unqualified through rough judgment, a drain valve is opened by some boiler workers to drain a lot of water, water is wasted, and the water is added again, so that fuel is wasted. The stable operation of water supply and boiler water not only can save water resources, reduce scale generation and save fuel, but also can make the boiler more stable and safe, prolong the service life of equipment and improve the efficiency.
The foregoing has described in detail the technical solutions provided by the embodiments of the present invention, and specific examples have been applied to illustrate the principles and implementations of the embodiments of the present invention, where the above description of the embodiments is only suitable for helping to understand the principles of the embodiments of the present invention; meanwhile, as for those skilled in the art, according to the embodiments of the present invention, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present invention.
Claims (6)
1. A boiler water quality dynamic automatic monitoring and pollution discharge quantity feedback control system comprises a boiler, a control center, a water storage tank and an automatic water processor; the automatic water processor is respectively provided with a tap water inlet pipe and a soft water outlet pipe; tap water enters the automatic water processor through the tap water inlet pipe, and the automatic water processor is communicated with the water storage tank through the soft water outlet pipe; the water storage tank is communicated with the boiler through a water supply pipeline; the method is characterized in that: the soft water outlet pipe is respectively provided with a water hardness monitor and a water supply chlorine root monitor; the water hardness monitor is used for monitoring soft water hardness; the water supply chloride monitor is used for monitoring the chloride ion content value of the soft water; a drain pipe and a sampler are respectively connected to the boiler; a sewage draining electromagnetic valve is arranged on the sewage draining pipe; the sampler is respectively provided with a total alkalinity analyzer and a boiler water chlorine analyzer; the total alkalinity analyzer is used for measuring the hardness value of the boiler water; the water chloride analyzer is used for measuring the chloride ion content value of the boiler water; the control center is respectively and electrically connected with the blowdown solenoid valve, the water quality hardness monitor, the water supply chlorine radical monitor, the total alkalinity analyzer and the boiler water chlorine radical analyzer.
2. The boiler water quality dynamic automatic monitoring and pollution discharge amount feedback control system according to claim 1, wherein: the water hardness monitor comprises a first reactor, a first water amount collecting tank, an ammonia-NaCl tank, a chrome black T tank and an EDTA solution tank; the first water volume collecting tank is communicated with the first reactor through a first water volume electromagnetic valve; the ammonia-NaCl tank is communicated with the first reactor through an ammonia-NaCl electromagnetic valve; the chrome black T tank is communicated with the first reactor through a chrome black T electromagnetic valve; the EDTA solution tank is communicated with the first reactor through an EDTA electromagnetic valve; the first reactor is provided with a first rotary spray head; the bottom of the first reactor is provided with a first vibrating spring; the bottom of the first reactor is connected with a hose.
3. The boiler water quality dynamic automatic monitoring and pollution discharge amount feedback control system according to claim 1, wherein: the water supply chlorine root monitor and the boiler water chlorine root analyzer comprise a second reactor, a second water quantity collecting tank, a second phenolphthalein solution tank, a silver nitrate solution tank, a second standard sulfuric acid solution tank and a potassium chromate solution tank; the second water quantity collecting tank is communicated with the second reactor through a second water quantity electromagnetic valve; the second phenolphthalein solution tank is communicated with the second reactor through a second phenolphthalein electromagnetic valve; the silver nitrate solution tank is communicated with the second reactor through a silver nitrate electromagnetic valve; the second standard sulfuric acid solution tank is communicated with the second reactor through a second standard sulfuric acid electromagnetic valve; the potassium chromate solution tank is communicated with the second reactor through a potassium chromate electromagnetic valve; a second PH tester is arranged in the second reactor; a second rotary spray head is arranged on the second reactor; the bottom of the second reactor is provided with a second vibrating spring; and the bottom of the second reactor is connected with a hose.
4. The boiler water quality dynamic automatic monitoring and pollution discharge amount feedback control system according to claim 1, wherein: the total alkalinity analyzer comprises a third reactor, a third water amount collecting tank, a third phenolphthalein solution tank, a third standard sulfuric acid solution tank and a methyl orange solution tank; the third water amount collecting tank is communicated with the third reactor through a third water amount electromagnetic valve; the third phenolphthalein solution tank is communicated with the third reactor through a third phenolphthalein electromagnetic valve; the third standard sulfuric acid solution tank is communicated with the third reactor through a third standard sulfuric acid electromagnetic valve; the methyl orange solution tank is communicated with the third reactor through a methyl orange electromagnetic valve; a third PH tester is arranged in the third reactor; a third rotary spray head is arranged on the third reactor; the bottom of the third reactor is provided with a third vibrating spring; and the bottom of the third reactor is connected with a hose.
5. The boiler water quality dynamic automatic monitoring and pollution discharge amount feedback control system according to claim 1, wherein: the water supply pipeline is connected with a phosphate powder tank through a phosphate electromagnetic valve; the control center is electrically connected with the phosphate radical electromagnetic valve.
6. The boiler water quality dynamic automatic monitoring and pollution discharge amount feedback control system according to claim 1, wherein: the boiler is provided with a liquid level meter.
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