CN111530392B - Hypochlorous acid water extraction system - Google Patents
Hypochlorous acid water extraction system Download PDFInfo
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- CN111530392B CN111530392B CN202010402717.4A CN202010402717A CN111530392B CN 111530392 B CN111530392 B CN 111530392B CN 202010402717 A CN202010402717 A CN 202010402717A CN 111530392 B CN111530392 B CN 111530392B
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- hypochlorous acid
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- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000003809 water extraction Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 238000006243 chemical reaction Methods 0.000 claims abstract description 127
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 62
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000005303 weighing Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 42
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000002955 isolation Methods 0.000 claims description 21
- 230000003750 conditioning effect Effects 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 16
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 14
- 239000000460 chlorine Substances 0.000 claims description 14
- 229910052801 chlorine Inorganic materials 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 2
- 239000007789 gas Substances 0.000 description 72
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 11
- 239000001569 carbon dioxide Substances 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
- B01J19/285—Shaking or vibrating reactors; reactions under the influence of low-frequency vibrations or pulsations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J7/00—Apparatus for generating gases
- B01J7/02—Apparatus for generating gases by wet methods
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/04—Hypochlorous acid
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1295—Parallel-T filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00054—Controlling or regulating the heat exchange system
- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00103—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor in a heat exchanger separate from the reactor
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a hypochlorous acid water extraction system, which comprises a water supply tank, a feeder, a reaction kettle and a control unit, wherein the reaction kettle is provided with a water filling port and a feed port, the water supply tank is connected with a switch valve in series and is butted with the water filling port, the feeder is butted with the feed port through a feeding assembly, a temperature sensor, a heating device and a cooling device which are electrically connected with the control unit are arranged in the reaction kettle, and the feeding assembly is provided with a weighing device which is electrically connected with the control unit; the control unit can control the opening and closing of the switch valve according to the weight of the sodium carbonate weighed by the weighing device, so that the water supply tank can inject water with corresponding amount along the water injection port; the control unit can also control the operation of the heating device and/or the cooling device according to the temperature of the temperature sensor during the reaction of collecting the sodium carbonate, the water and the mixed gas material, so that the temperature in the reaction kettle is maintained within a set temperature range. The hypochlorous acid water extraction system accurately controls the reaction temperature in the reaction kettle and the water content of sodium carbonate, and improves the output and quality of hypochlorous acid water.
Description
Technical Field
The invention relates to the field of intelligent chemical industry, in particular to a hypochlorous acid water extraction system.
Background
Hypochlorous acid, of the formula HCLO, is present only in solution, and dilute solutions are colorless. Hypochlorous acid is a very weak acid, but has strong oxidizing and bleaching effects, so hypochlorous acid can be used as sterilizing water. Through research, the hypochlorous acid water has high sterilization speed, good effect and strong deodorization capability. Meanwhile, hypochlorous acid water has higher safety to human and animals, can be decomposed after reacting with organic matters or being irradiated by ultraviolet rays, does not generate residues, and has no load on the environment. Hypochlorous acid is used for disinfection and sterilization in medical institutions and food processing enterprises because of its bactericidal effect and low cost.
The hypochlorous acid produced by the existing processing is often low in yield or more in impurities, and the main reasons are that: in the prior art, only the improvement of the preparation process is emphasized in the extraction of the hypochlorous acid, the innovation of preparation equipment is neglected, and the influence of the influence factors such as environmental parameters, equipment operation and the like on the extraction of the hypochlorous acid in the extraction process of the hypochlorous acid cannot be found in time.
Meanwhile, the production of hypochlorous acid by the reaction of chlorine and water-containing sodium carbonate is a common production mode. However, the existing equipment for preparing hypochlorous acid water does not consider to accurately control the reaction temperature and the water content of sodium carbonate in the equipment, so that the output of the acid anhydride of hypochlorous acid is low, and the acid anhydride contains more impurities.
In the related art, a better technical scheme is still lacked.
Disclosure of Invention
In view of the above, there is a need for a hypochlorous acid water extraction system. This hypochlorous acid water extraction system carries out accurate control to the reaction temperature in the reation kettle and the water content of sodium carbonate, improves the output and the quality of hypochlorous acid water.
In order to solve the above technical problems, the present invention provides a technical solution as follows: a hypochlorous acid water extraction system comprises a water supply tank, a feeder, a reaction kettle and a control unit, wherein the reaction kettle is provided with a water filling port and a feed port, the water supply tank is connected with a switch valve in series and is in butt joint with the water filling port, the feeder is in butt joint with the feed port through a feeding assembly, a temperature sensor, a heating device and a cooling device which are electrically connected with the control unit are arranged in the reaction kettle, and the feeding assembly is provided with a weighing device which is electrically connected with the control unit; the control unit can control the on-off valve to be opened and closed according to the weight of the sodium carbonate weighed by the weighing device, so that the water supply tank can inject water with corresponding amount along the water injection port; the control unit can also control the heating device and/or the cooling device to work according to the temperature of the temperature sensor during the reaction of collecting the sodium carbonate, the water and the mixed gas material, so that the temperature in the reaction kettle is maintained within a set temperature range.
In the hypochlorous acid water extraction system, the temperature sensor, the heating device and the cooling device are arranged in the reaction kettle and are electrically connected with the control unit, so that the control unit controls the heating device and/or the cooling device to work according to the temperature in the reaction kettle collected by the temperature sensor, the temperature in the reaction kettle is controlled to be maintained within a set temperature range, and the water amount injected into the reaction kettle is controlled by the weight of the sodium carbonate weighed by the weighing device, so that the water content of the sodium carbonate is controlled; the reaction temperature and the water content of the sodium carbonate are controlled to ensure that the yield of the intermediate gas generated by the reaction is high.
In one embodiment, in order to realize that the generated intermediate gas is reacted to form hypochlorous acid and complete extraction, the reaction kettle is further provided with a gas outlet, the gas outlet is connected with a reaction water tank through a gas pipe, the reaction water tank is provided with an extraction opening, the intermediate gas generated by the reaction of sodium carbonate, water and a mixed gas material in the reaction kettle is injected into the reaction water tank along the gas pipe and reacts with an aqueous solution to generate hypochlorous acid water, and the generated hypochlorous acid water is extracted through the extraction opening.
So set up, the gaseous process gas-supply pipe of middle of producing carries to reaction tank in the reation kettle, and the aqueous solution reaction in middle gaseous and the reaction tank generates hypochlorous acid water, has realized absorbing with the water and has drawed hypochlorous acid.
In one embodiment, in order to improve the purity of the generated hypochlorous acid water, the bottom of the reaction water tank is also provided with a vibration table, and the vibration table is also electrically connected with the control unit.
So set up, carry out the vibration operation through the shaking table to reaction tank, make the gaseous impurity gas that mixes and/or the part is dissolved in the aqueous solution in reaction tank of intermediate float to reaction tank upper portion and with the separation of intermediate gas, guarantee the purity with the hypochlorous acid water that the aqueous solution reaction generated.
In one embodiment, in order to discharge the floating impurity gas out of the reaction water tank, the reaction water tank is further provided with an exhaust port, and the exhaust port is provided with an exhaust valve electrically connected with the control unit.
So set up, open when the shaking table vibration operation through the control unit control discharge valve, mix the impurity gas in the intermediate gas and directly discharge reaction water tank after by the vibration isolation, avoid impurity gas to dissolve in hypochlorous acid aquatic, reduce hypochlorous acid water's purity.
In one embodiment, in order to improve the purity of the generated hypochlorous acid water, at least one gas filtering tank is connected to the gas conveying pipe in series and is used for adsorbing and removing impurity gas mixed in the intermediate gas.
So set up, adopt the liquid to strain and filter impurity gas for the intermediate gas purity who pours into the reaction water tank improves, and then makes the intermediate gas dissolve in the hypochlorous acid water purity that water generated high.
In one embodiment, in order to achieve accurate control of the reaction temperature and improve the accuracy of temperature detection, the temperature sensor is electrically connected with the control unit through a signal conditioning module, the signal conditioning module comprises a double-T-shaped band-impedance filtering branch, a feedback circuit and an isolation circuit, the double-T-shaped band-impedance filtering branch is electrically connected with the feedback circuit and the isolation circuit, the double-T-shaped band-impedance filtering branch is also electrically connected with the temperature sensor, and the isolation circuit is also electrically connected with the control unit; the double-T-shaped band-resistance filtering branch is used for carrying out operational amplification on a temperature signal in a preset bandwidth and transmitting the temperature signal to the isolating circuit; the feedback circuit is used for feeding back the temperature signal output by the double-T-shaped band-resistance filtering branch to the input end of the double-T-shaped band-resistance filtering branch and adjusting the quality factor of the double-T-shaped band-resistance filtering branch; the isolation circuit is used for converting and transmitting the temperature signal output by the double-T-shaped band-resistance filtering branch circuit to the control unit.
So set up, through the interference that the power frequency signal among the temperature signal of signal conditioning module filtering temperature sensor collection produced temperature measurement, through the figure of merit of adjusting signal conditioning module, change the central frequency and the bandwidth of signal conditioning module to power frequency signal in the setting bandwidth in the temperature signal of filtering temperature sensor collection improves the precision that temperature sensor gathered.
In one embodiment, the double-T-type band-resistance filtering branch comprises a first T-type network, a second T-type network and a first operational amplifier U1 which are electrically connected, wherein the first T-type network comprises a first resistor R1, a second resistor R2 and a first capacitor C1, and the second T-type network comprises a second capacitor C2, a third capacitor C3 and a third resistor R3; one end of the first resistor R1 is connected to the temperature sensor and the second capacitor C2, the other end of the first resistor R1 is connected to the second resistor R2 and the first capacitor C1, the other end of the second resistor R2 is connected to the unidirectional input end of the first operational amplifier U1, and the other end of the first capacitor C1 is connected to the third resistor R3 and the feedback circuit; the other end of the second capacitor C2 is connected to the other ends of the third capacitor C3 and the third resistor R3, and the other end of the third capacitor C3 is connected to the inverting input terminal of the first operational amplifier U1; the output end of the first operational amplifier U1 is connected with the isolation circuit, and the inverting input end of the first operational amplifier U1 is also connected with the output end thereof; the feedback circuit comprises a second operational amplifier U2 and a potentiometer R4, one end of the potentiometer R4 is connected with the double-T-shaped band-impedance filtering branch circuit, the other end of the potentiometer R4 is connected with a first power supply, the sliding contact end of the potentiometer R4 is connected with the homodromous input end of the second operational amplifier U2, and the reverse input end of the second operational amplifier U2 is connected with the output end thereof and is connected with the electric connection point of the first capacitor C1 and the third resistor R3.
In one embodiment, the first operational amplifier U1 and the second operational amplifier U2 are both LM358 operational amplifiers.
In one embodiment, in order to heat the reaction kettle, the temperature raising device comprises a heat exchanger, and the heat exchanger is further connected with an external high-temperature and low-temperature integrated machine.
In one embodiment, in order to realize the refrigeration of the reaction kettle, the cooling device comprises a condenser, and the condenser is further connected with an external high-low temperature all-in-one machine.
In one embodiment, in order to feed the feeder and the corresponding amount of sodium carbonate powder weighed by the weighing device to the reaction kettle, the feeding assembly further comprises a screw conveyor, the screw conveyor is connected with the feeder through a material pipe, the weighing device is arranged in the material pipe, and a material conveying opening of the screw conveyor is in butt joint with the material inlet.
In one embodiment, in order to supply the mixed gas material to the reaction kettle, an air inlet is further arranged on the reaction kettle and is connected with an air supply tank through an air inlet pipe, and the air supply tank stores the mixed gas material mixed with chlorine and air.
Drawings
FIG. 1 is a schematic diagram of the structure of a hypochlorous acid water extraction system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a hypochlorous acid water extraction system in one embodiment of the present invention;
FIG. 3 is a schematic diagram of the hypochlorous acid water extraction system according to another embodiment of the present invention;
FIG. 4 is a partial circuit diagram of a signal conditioning module in one embodiment of the present invention;
FIG. 5 is a graph showing the relationship between the concentration of hypochlorous acid extracted from the reaction water tank and the reaction time.
In the figure, 1, a reaction kettle, 101, a water injection port, 102, a feed inlet, 103, an air outlet, 104 and an air inlet; 2. a water supply tank; 3. a feeder; 4. a control unit 41, a microcontroller 42, a controller 43 and a display; 5. an on-off valve; 6. the device comprises a feeding assembly 61, a weighing device 62, a spiral conveyor 63 and a material pipe; 7. a temperature sensor; 8. a gas delivery pipe; 9. a reaction water tank 901, an extraction port 902 and an exhaust port; 10. a stirring device; 11. a vibration table; 12. an exhaust valve; 13. a gas filter tank; 14. a signal conditioning module; 15. a high-low temperature all-in-one machine; 16. an exchanger; 17. an air inlet pipe; 18. an air supply tank; 19. an electronic valve; 20. and (4) a water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
FIG. 1 is a schematic diagram of the hypochlorous acid water extraction system according to an embodiment of the present invention. The hypochlorous acid water extraction system shown in the figure accurately controls the reaction temperature in the reaction kettle 1 and the water content of sodium carbonate, and improves the output and quality of hypochlorous acid water by improving the output rate of intermediate gas for generating hypochlorous acid.
Referring to fig. 1 to 5, the hypochlorous acid water extraction system according to the embodiment of the present invention includes a water supply tank 2, a feeder 3, a reaction kettle 1 and a control unit 4, wherein the reaction kettle 1 is provided with a water injection port 101 and a feed port 102, the water supply tank 2 is connected in series with a switching valve 5 to be in butt joint with the water injection port 101, the feeder 3 is in butt joint with the feed port 102 through a feeding assembly 6, the reaction kettle 1 is provided with a temperature sensor 7, a temperature raising device (not shown in the drawings) and a temperature lowering device (not shown in the drawings) which are electrically connected with the control unit 4, and the feeding assembly 6 is provided with a weighing device 61 which is electrically connected with the control unit 4; wherein, the control unit 4 can control the opening and closing of the switch valve 5 according to the weight of the sodium carbonate weighed by the weighing device 61, so that the water supply tank 2 injects water with corresponding amount along the water injection port 101; the control unit 4 can also control the operation of the heating device and/or the cooling device according to the temperature of the sodium carbonate, the water and the mixed gas material collected by the temperature sensor 7 during the reaction, so that the temperature in the reaction kettle 1 is maintained within the set temperature range.
In the hypochlorous acid water extraction system, the temperature sensor 7, the heating device and the cooling device are arranged in the reaction kettle 1, and the temperature sensor 7, the heating device and the cooling device are electrically connected with the control unit 4, so that the control unit 4 controls the heating device and/or the cooling device to work according to the temperature in the reaction kettle 1 collected by the temperature sensor 7, the temperature in the reaction kettle 1 is controlled to be maintained within a set temperature range, and the water amount injected into the reaction kettle 1 is controlled by the weight of sodium carbonate weighed by the weighing device 61, so that the water content of the sodium carbonate is controlled; the reaction temperature and the water content of the sodium carbonate are controlled to ensure that the yield of the intermediate gas generated by the reaction is high.
The reaction vessel 1 is further provided with a stirring device 10 for sufficiently contacting chemical substances such as sodium carbonate, water and a mixed gas during the reaction, the stirring device 10 is electrically connected to the control unit 4, and the control unit 4 controls the stirring time and the stirring speed of the stirring device 10, so that the reaction materials in the reaction vessel 1 are sufficiently reacted, and the yield of the intermediate gas is improved. In this embodiment, the main component of the intermediate gas is dichlorine monoxide, and of course, the impurity gas mixed in the intermediate gas is mainly carbon dioxide, and also includes a small amount of mixed gas material, and in this embodiment, the mixed gas material is a mixed gas material formed by mixing chlorine gas and air according to a set volume ratio. The mixed gas is also injected from the outside of the reaction vessel 1 before and/or during the reaction. As known to those skilled in the art, the products generated after the sodium carbonate reacts with chlorine in the reaction kettle 1 are dichlorine monoxide and carbon dioxide, and the dichlorine monoxide can generate hypochlorous acid water by dissolving in water. In the embodiment, the used raw materials of sodium carbonate and chlorine are common basic chemical products, are low in price and easy to obtain, and can effectively reduce the cost.
It should be further noted that, if the temperature corresponding to the reaction in the reaction kettle 1 is normal temperature, the temperature of the reaction system is rapidly increased due to the exothermic reaction, and easily exceeds the decomposition temperature of the dichlorine monoxide (about 45 ℃), so that the dichlorine monoxide yield is very low (10% -20%), and in order to increase the dichlorine monoxide yield, a temperature monitoring and temperature adjusting device must be additionally arranged to control the temperature to 0-10 ℃. As a result of experiments conducted at 10-20 ℃ and 0-10 ℃, the yield of dichlorine monoxide is highest at 0-10 ℃, and therefore, the temperature in the reaction vessel 1 is controlled to 0-10 ℃ in the hypochlorous acid water extraction system of this example.
Specifically, the control unit 4 stores a temperature threshold range, which is 0-10 ℃, and if the temperature signal received by the control unit 4 is less than 0 ℃, the control unit 4 controls the temperature raising device to raise the temperature until the temperature in the reaction kettle 1 is within the temperature threshold range, and if the temperature signal received by the control unit 4 is greater than 10 ℃, the control unit 4 controls the temperature lowering device to lower the temperature until the temperature in the reaction kettle 1 is within the temperature threshold range. In practice, the control unit 4 controls the process as follows for the water content of the sodium carbonate: the weighing device 61 acquires the mass (weight) of the sodium carbonate, the weighing device 61 transmits the acquired mass information to the control unit 4, and the control unit 4 controls the water supply tank 2 to inject water into the reaction kettle 1 according to the received mass signal, so that the water content of the sodium carbonate is controlled to be 10% by mass fraction.
In one optional implementation, the switch valve 5 is an electromagnetic switch valve capable of being electrically controlled by the control unit 4, the switch valve 5 is arranged on a pipeline connecting the water supply tank 2 and the reaction kettle 1, a water pump 20 for water delivery is further arranged on the pipeline, the water pump 20 is also electrically connected with the control unit 4, and the control unit 4 controls the water pump to deliver the water pump 20 in the water supply tank 2 to the reaction kettle 1.
In order to realize that the hypochlorous acid is formed by the intermediate gas generated by the reaction and extraction is completed, in one embodiment, the reaction kettle 1 is further provided with a gas outlet 103, the gas outlet 103 is connected with the reaction water tank 9 through a gas pipe 8, the reaction water tank 9 is provided with an extraction port 901, the intermediate gas generated by the reaction of sodium carbonate, water and a mixed gas material in the reaction kettle is injected into the reaction water tank along the gas pipe and reacts with an aqueous solution to generate hypochlorous acid water, and the generated hypochlorous acid water is extracted through the extraction port.
It should be understood that, with such an arrangement, the intermediate gas generated in the reaction kettle 1 is conveyed to the reaction water tank 9 through the gas conveying pipe 8, and the intermediate gas reacts with the aqueous solution in the reaction water tank 9 to generate hypochlorous acid water, so that hypochlorous acid is extracted by water absorption.
As shown in FIG. 5, in practice, when the reaction is carried out in the reaction tank 9 for 2 hours, the solution in the reaction tank 9 turns into a pale yellow solution having substantially the same color as the chlorine water, and in order to determine whether the solution is hypochlorous acid, the effective chlorine concentration of the sample is measured by an iodometric method, then a sample is taken and reduced with hydrogen peroxide, the reduced chlorine ion concentration is measured by a silver method, and finally the relationship between the measurement data is determined, and the relationship between the effective chlorine concentration of the solution in the reaction tank 9 and the chlorine ion concentration generated after the reduction of hypochlorous acid is 2:1, whereas for chlorine water, 1 mole of chlorine gas, i.e., 2 moles of chlorine atoms oxidize 2 moles of NaI, 1 mole of chlorine atoms in chlorine gas corresponds to only 1 mole of effective chlorine, that is, the relationship between the effective chlorine concentration of chlorine water and the chlorine ion concentration generated after the reduction of chlorine gas is 1:1, from this, it can be concluded that the solution is hypochlorous acid water.
In order to improve the purity of the generated hypochlorous acid water, in one embodiment, the bottom of the reaction water tank 9 is further provided with a vibration table 11, and the vibration table 11 is further electrically connected with the control unit 4.
It should be understood that, with this arrangement, the vibrating table 11 vibrates the reaction water tank 9 to cause the impurity gas mixed with and/or partially dissolved in the aqueous solution in the reaction water tank 9 to float up to the upper part of the reaction water tank 9 to be separated from the intermediate gas, thereby ensuring the purity of the hypochlorous acid water produced by the reaction with the aqueous solution.
In order to discharge the floating impurity gas out of the reaction water tank 9, in one embodiment, the reaction water tank 9 is further provided with an exhaust port 902, and the exhaust port 902 is provided with an exhaust valve 12 electrically connected to the control unit 4.
It can be understood that, with such an arrangement, the control unit 4 controls the exhaust valve 12 to open when the vibration table 11 vibrates, so that the impurity gas mixed in the intermediate gas is directly discharged out of the reaction water tank 9 after being subjected to vibration separation, thereby preventing the impurity gas from dissolving in hypochlorous water and reducing the purity of hypochlorous water.
It should be noted that, the gas products generated after the sodium carbonate and the chlorine react in the reaction kettle 1 are dichlorine monoxide and carbon dioxide, a small amount of carbon dioxide is concentrated in the water in the reaction water tank 9, the vibration table 11 is controlled by the control unit 4 to perform the vibration operation on the reaction water tank 9 within a preset time, the exhaust valve 12 is opened during the vibration operation, and a part of the carbon dioxide gas dissolved in the water is discharged through the exhaust valve 12, thereby improving the purity of the hypochlorous acid water.
In order to improve the purity of the generated hypochlorous acid water, in one embodiment, at least one gas filtering tank 13 is connected to the gas pipe 8 in series, and the gas filtering tank 13 is used for adsorbing and removing impurity gas mixed in the intermediate gas.
It should be understood that so set up, adopt the liquid to strain impurity gas and filter for the intermediate gas purity who pours into reaction water tank 9 into improves, and then makes the intermediate gas dissolve in the hypochlorous acid water purity that water generated high. In this embodiment, the gas filtration tank 13 is provided with a polyol ether solution for absorbing carbon dioxide, and the gas filtration tank 13 is provided with a polyol ether solution for effectively absorbing carbon dioxide, thereby improving the purity of hypochlorous acid water.
In order to realize accurate control of reaction temperature and improve the precision of temperature detection, in one embodiment, the temperature sensor 7 is electrically connected with the control unit 4 through the signal conditioning module 14, the signal conditioning module 14 comprises a double-T-shaped band-resistance filtering branch, a feedback circuit and an isolation circuit, the double-T-shaped band-resistance filtering branch is electrically connected with the feedback circuit and the isolation circuit, the double-T-shaped band-resistance filtering branch is also electrically connected with the temperature sensor, and the isolation circuit is also electrically connected with the control unit 4; the double-T type band-resistance filtering branch circuit is used for carrying out operational amplification on a temperature signal in a preset bandwidth and transmitting the temperature signal to the isolating circuit; the feedback circuit is used for feeding back the temperature signal output by the double-T-shaped band-resistance filtering branch to the input end of the double-T-shaped band-resistance filtering branch and adjusting the quality factor of the double-T-shaped band-resistance filtering branch; and the isolation circuit is used for converting and transmitting the temperature signal output by the double-T-shaped band-resistance filtering branch circuit to the control unit 4.
So set up, through the interference that the power frequency signal among the temperature signal of signal conditioning module 14 filtering temperature sensor collection produced temperature measurement, through the figure of merit of adjusting signal conditioning module 14, change the central frequency and the bandwidth of signal conditioning module 14 to the power frequency signal in the set for bandwidth in the temperature signal of filtering temperature sensor 7 collection improves the precision that temperature sensor 7 gathered.
In one embodiment, the double-T-shaped band-resistance filtering branch comprises a first T-shaped network, a second T-shaped network and a first operational amplifier U1 which are electrically connected, wherein the first T-shaped network comprises a first resistor R1, a second resistor R2 and a first capacitor C1, and the second T-shaped network comprises a second capacitor C2, a third capacitor C3 and a third resistor R3; wherein the content of the first and second substances,
one end of a first resistor R1 is connected with the temperature sensor 7 and a second capacitor C2, the other end of the first resistor R1 is connected with a second resistor R2 and a first capacitor C1, the other end of a second resistor R2 is connected with the homodromous input end of a first operational amplifier U1, and the other end of the first capacitor C1 is connected with a third resistor R3 and a feedback circuit;
the other end of the second capacitor C2 is connected with the other ends of the third capacitor C3 and the third resistor R3, and the other end of the third capacitor C3 is connected with the inverting input end of the first operational amplifier U1; the output end of the first operational amplifier U1 is connected with the isolation circuit, and the inverting input end of the first operational amplifier U1 is also connected with the output end of the first operational amplifier U3578;
the feedback circuit comprises a second operational amplifier U2 and a potentiometer R4, one end of the potentiometer R4 is connected with a double-T-shaped band-impedance filtering branch circuit, the other end of the potentiometer R4 is connected with a first power supply (+5V), a sliding contact end of the potentiometer R4 is connected with a same-direction input end of a second operational amplifier U2, and an opposite-direction input end of the second operational amplifier U2 is connected with an output end thereof and is connected with an electric connection point of a first capacitor C1 and a third resistor R3.
It can be understood that the isolation circuit that satisfies the isolation requirement satisfies the signal transmission of different power systems, and/or the isolation circuit that satisfies the requirement of avoiding the ripple input control unit 4 to be connected in series is all suitable for the isolation circuit in this application, for example: an isolation circuit constructed by using optical couplers can be selected.
It is to be understood that in an alternative embodiment, the first operational amplifier U1 and the second operational amplifier U2 are both LM358 operational amplifiers.
It should be noted that, in this embodiment, the signal conditioning module 14 is used for filtering out the influence of the power frequency signal in the temperature signal collected by the temperature sensor 7 on the temperature measurement, and is a signal conditioning circuit with an adjustable quality factor, that is, the potentiometer R4 may be used to adjust the center frequency (f)0) And Bandwidth (BW). Specifically, the variation range of the quality factor is selected to be 0.3 to 50, a part of the temperature signal collected by the temperature sensor 7 is fed back to the first capacitor C1 and the third resistor R3 through a feedback circuit formed by the second operational amplifier U2 in the signal conditioning module, the quality factor of the signal conditioning module 14 depends on the total amount of the feedback signal, and by arranging the two operational amplifiers, the frequency and the depth of the signal conditioning module 14 are not influenced by the adjustment of the potentiometer R4, so that the precision collected by the temperature sensor 7 is greatly improved.
In order to heat and/or refrigerate the reaction kettle 1, in one embodiment, the temperature raising device comprises a heat exchanger, the heat exchanger is further connected with an external high-low temperature all-in-one machine 15, the temperature lowering device comprises a condenser, and the condenser is also connected with the external high-low temperature all-in-one machine 15. The exchanger 16 shown in the drawings is referred to as a heat exchanger or condenser in the present embodiment.
In one embodiment, in order to supply the feeder 3 and deliver the corresponding amount of sodium carbonate powder weighed by the weighing device 61 to the reaction kettle 1, the feeding assembly 6 further comprises a screw conveyor 62, the screw conveyor 62 is connected to the feeder 3 through a material pipe 63, the weighing device 61 is installed in the material pipe, and a material delivery port of the screw conveyor 62 is abutted to the material inlet 102.
In order to supply the reaction vessel 1 with the gas mixture, in one embodiment, the reaction vessel 1 is further provided with an air inlet 104, the air inlet 104 is connected to an air supply tank 18 through an air inlet pipe 17, and the air supply tank 18 stores the gas mixture of chlorine and air. Incidentally, the gas supply tank 18 may store only chlorine gas and mix the chlorine gas with air at a ratio of 1:3 to prepare a mixed gas material before injecting the mixed gas into the reaction vessel 1. Meanwhile, the air inlet pipe 17 is also provided with an electronic valve 19 electrically connected with the control unit 4, and the control unit 4 controls the opening and closing of the electronic valve 19, so that the mixed gas material is fed into the reaction kettle 1 according to the requirement in time and quantity.
It should be noted that, in an optional implementation manner of this embodiment, the control unit 4 includes a microcontroller 41, a controller 42, and a display 43, the microcontroller 41 is electrically connected to the controller 42 and the display 43, and the microcontroller 41, the controller 42, and the display 43 constitute one of the following: industrial personal computer, industrial tablet computer, display 43 can show the temperature signal that microcontroller 41 gathered.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (9)
1. A hypochlorous acid water extraction system comprises a water supply tank (2), a feeder (3), a reaction kettle (1) and a control unit (4), and is characterized in that a water filling port (101) and a feed port (102) are arranged on the reaction kettle (1), a switch valve (5) connected in series with the water supply tank (2) is in butt joint with the water filling port (101), the feeder (3) is in butt joint with the feed port (102) through a feeding assembly (6), a temperature sensor (7), a heating device and a cooling device which are electrically connected with the control unit (4) are arranged in the reaction kettle (1), and the feeding assembly (6) is provided with a weighing device (61) which is electrically connected with the control unit (4); the control unit (4) can control the on-off valve (5) to be opened and closed according to the weight of the sodium carbonate weighed by the weighing device (61), so that the water supply tank (2) can inject water with corresponding amount along the water injection port (101); the control unit (4) can also control the heating device and/or the cooling device to work according to the temperature of the temperature sensor (7) during the reaction of collecting the sodium carbonate, the water and the mixed gas material, so that the temperature in the reaction kettle (1) is maintained within a set temperature range, wherein under the condition that the reaction temperature in the reaction kettle (1) is normal temperature, the control unit (4) controls the heating device and/or the cooling device to work to control the temperature to be 0-10 ℃; the reaction kettle (1) is also provided with a gas outlet (103), the gas outlet (103) is connected with a reaction water tank (9) through a gas pipe (8), the reaction water tank (9) is provided with an extraction port (901), intermediate gas generated by the reaction of sodium carbonate, water and a mixed gas material in the reaction kettle (1) is injected into the reaction water tank (9) along the gas pipe (8) and reacts with an aqueous solution to generate hypochlorous water, and the generated hypochlorous water is extracted through the extraction port (901); reaction water tank (9) bottom still is equipped with shaking table (11), shaking table (11) still with the control unit (4) electricity is connected, still be equipped with gas vent (902) on reaction water tank (9), be equipped with on gas vent (902) with discharge valve (12) that the control unit (4) electricity is connected.
2. The hypochlorous acid water extraction system of claim 1, wherein the gas pipe (8) is further connected with at least one gas filtering tank (13) in series, and the gas filtering tank (13) is used for adsorbing and removing impurity gas mixed in the intermediate gas.
3. The hypochlorous acid water extraction system of claim 1, wherein the temperature sensor (7) is electrically connected with the control unit (4) through a signal conditioning module (14),
the signal conditioning module (14) comprises a double-T-shaped band-resistance filtering branch, a feedback circuit and an isolation circuit, wherein the double-T-shaped band-resistance filtering branch is electrically connected with the feedback circuit and the isolation circuit, the double-T-shaped band-resistance filtering branch is also electrically connected with the temperature sensor (7), and the isolation circuit is also electrically connected with the control unit (4); wherein the content of the first and second substances,
the double-T-shaped band-resistance filtering branch is used for carrying out operational amplification on a temperature signal in a preset bandwidth and transmitting the temperature signal to the isolating circuit;
the feedback circuit is used for feeding back the temperature signal output by the double-T-shaped band-resistance filtering branch to the input end of the double-T-shaped band-resistance filtering branch and adjusting the quality factor of the double-T-shaped band-resistance filtering branch;
the isolation circuit is used for converting and transmitting the temperature signal output by the double-T-shaped band-resistance filtering branch circuit to the control unit (4).
4. The hypochlorous acid water extraction system of claim 3, wherein the double T-shaped band-impedance filtering branch comprises a first T-shaped network, a second T-shaped network and a first operational amplifier U1 which are electrically connected, the first T-shaped network comprises a first resistor R1, a second resistor R2 and a first capacitor C1, the second T-shaped network comprises a second capacitor C2, a third capacitor C3 and a third resistor R3; wherein the content of the first and second substances,
one end of the first resistor R1 is connected with the temperature sensor (7) and the second capacitor C2, the other end of the first resistor R1 is connected with the second resistor R2 and the first capacitor C1, the other end of the second resistor R2 is connected with the same-direction input end of the first operational amplifier U1, and the other end of the first capacitor C1 is connected with the third resistor R3 and the feedback circuit;
the other end of the second capacitor C2 is connected to the other ends of the third capacitor C3 and the third resistor R3, and the other end of the third capacitor C3 is connected to the inverting input terminal of the first operational amplifier U1;
the output end of the first operational amplifier U1 is connected with the isolation circuit, and the inverting input end of the first operational amplifier U1 is also connected with the output end thereof;
the feedback circuit comprises a second operational amplifier U2 and a potentiometer R4, one end of the potentiometer R4 is connected with the double-T-shaped band-impedance filtering branch circuit, the other end of the potentiometer R4 is connected with a first power supply, the sliding contact end of the potentiometer R4 is connected with the homodromous input end of the second operational amplifier U2, and the reverse input end of the second operational amplifier U2 is connected with the output end thereof and is connected with the electric connection point of the first capacitor C1 and the third resistor R3.
5. The hypochlorous acid water extraction system of claim 4, wherein the first operational amplifier U1 and the second operational amplifier U2 are both LM358 operational amplifiers.
6. The hypochlorous acid water extraction system of any one of claims 1 to 5, wherein the temperature raising device comprises a heat exchanger, and the heat exchanger is further connected with an external high-low temperature all-in-one machine (15).
7. The hypochlorous acid water extraction system of any one of claims 1 to 5, wherein the cooling device comprises a condenser, and the condenser is further connected with an external high-low temperature all-in-one machine (15).
8. The hypochlorous acid water extraction system of any one of claims 1 to 5, wherein the feeding assembly (6) further comprises a screw conveyor (62), the screw conveyor (62) is connected with the feeder (3) through a material pipe (63), the weighing device (61) is installed in the material pipe (63), and a material conveying opening of the screw conveyor (62) is butted with the material inlet (102).
9. The hypochlorous acid water extraction system of any one of claims 1 to 5, wherein an air inlet (104) is further formed on the reaction kettle (1), the air inlet (104) is connected with an air supply tank (18) through an air inlet pipe (17), and the air supply tank (18) stores a mixed gas material of chlorine and air.
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Denomination of invention: Hypochloric acid water extraction system Granted publication date: 20220614 Pledgee: Agricultural Bank of China Limited Zhuji sub branch Pledgor: Jiye Biotechnology (Zhuji) Co.,Ltd. Registration number: Y2024980002327 |