TWI647174B - A system for producing chlorine dioxide solution - Google Patents

Abstract

The invention provides a system for producing an aqueous solution of chlorine dioxide, comprising an electrolytic cell, a gas-water separation device and a first mixing tank. The electrolytic cell is used to produce chlorine dioxide vapor by electrolysis. The gas-water separation device is connected to the electrolytic cell for performing gas-water separation treatment on the chlorine dioxide vapor to generate a chlorine dioxide gas. The first mixing tank is connected to the gas-water separation device for receiving and mixing the chlorine dioxide gas with pure water to produce an aqueous solution of chlorine dioxide.

Description

System for producing aqueous chlorine dioxide solution

The invention relates to a system for producing an aqueous solution of chlorine dioxide, in particular to a method for treating by-products harmful to human body in the produced chlorine dioxide while producing chlorine dioxide by electrochemical method and salt electrolysis method. And by arranging the electrolysis-related device, the production or purity of the produced chlorine dioxide aqueous solution is greatly improved and does not contain a harmful by-product of the human body, and the residual chlorine dioxide gas is also treated to be non-toxic. .

Chlorine dioxide is a Class A1 safe and efficient physical disinfection and deodorant recommended by the World Health Organization and the World Food Organization. It can effectively sterilize, prevent the deposition of scale and prevent pipeline equipment by virtue of its strong oxidizing ability. Corrosion, strong oxidation of heavy metals and chemicals. Different from the traditional chlorine gas is the addition or substitution reaction with the reactants. Chlorine dioxide itself is a strong oxidant composed of two oxygen atoms, one oxygen atom combined with 19 electrons. The outermost electronic orbital domain has an unpaired pair. Active free electrons, which are selective for chlorine dioxide due to a special single electron transfer mechanism. When it attacks the organic molecular group in the outer electron domain of the object to be treated, it takes the principle of positive and negative attraction, steals an electron and becomes a chlorinated ion, and releases a new ecological oxygen atom to cause irreversible oxidation. Destruction and decomposition. Chlorine dioxide functions to deactivate the proteins, fats, and nucleic acids of microorganisms through oxidation. The principle is to oxidize and decompose the amino acids of the microorganisms to achieve deactivation, and there is no harmful effect on the higher animals or plant cells of the twin cells. ,because And to achieve the purpose of disinfection, deodorization.

In terms of food hygiene and safety, if chlorine dioxide is to be used as a food additive, the purity of chlorine dioxide should be more than 95% and the residual chlorine should be less than 2% in accordance with the regulations of the relevant international agencies. Exporting EU aquatic products and meat products It has already been sterilized by means of banned chlorine water, ozone and ultraviolet light. The use of chlorine dioxide for food hygiene has clearly become a mainstream trend.

In the case of tap water treatment, the tap water field is also the main component of the use of chlorine dioxide as a disinfecting water body. However, the existing tap water field uses a salt electrolysis method or an electrochemical method as a production method of chlorine dioxide added for tap water, but such chlorine dioxide may contain the aforementioned chlorate and chlorine in the production process thereof. Carcinogenic by-products such as acid, hydrogen peroxide, and chlorine. Furthermore, in the aquaculture industry, after the feed water precipitated in the culture pond is allowed to stand for a period of time, fermentation will start to produce chemical mutations, releasing toxic substances and rapidly degrading the water quality. The number of micro-bacteria precipitated in the bottom fermentation rapidly multiplies, and the oxygen and nutrients are shared with the aquatic organisms, and the accumulation of nitrous acid, hydrogen sulfide and ammonia is excessive, which ultimately makes the water body unable to survive and cause the whole pond to be cultured. Death, while the use of high purity, non-toxic and pH-neutral chlorine dioxide is currently the trend in the aquaculture industry.

The disinfection by-product is defined as a substance produced by the reaction of a disinfectant, a chemical agent or a chemical oxidant with a precursor substance in water during the treatment of the various disinfecting operations described above, and is a disinfection by-product, and the substances formed under different reaction conditions are also different. . At present, the known organic by-products of chlorine dioxide in water are copper, aldehydes and acids. The main inorganic by-products also include chlorate (ClO3-), chlorite (ClO2-), chlorochloride (Cl) and hydrogen peroxide. (H2O2). Chlorite is the main reaction end product, about 50% to 70% of chlorine dioxide is converted to chlorite; and about 30% of chlorate, chlorine and chloride are formed. In general, the purity of the chlorine dioxide produced About 48% to 52%, and the purity and pH of the chlorine dioxide produced are too unstable, so it cannot meet the specifications of food additives specified by national environmental protection units; on the other hand, The amount of chlorine dioxide produced is also unstable, resulting in inefficient cost savings in mass production.

In addition, chlorite and chlorate react rapidly in water or in moist human tissues, and ingestion or ingestion of chlorite or chlorate may cause irritation of the mouth, esophagus or stomach. Low concentrations of chlorine can cause irritation to the nose, throat and eyes, while higher concentrations of chlorine can cause changes in breathing rate, coughing and damage to the lungs. In addition, the harm of hydrogen peroxide is long-term, chronic, and the low concentration of hydrogen peroxide is not immediately dangerous, but it may still cause cancer when consumed for a long time. In other words, today's salt electrolysis and electrochemical methods produce the aforementioned four major possible carcinogenic by-products, which are potentially dangerous to human life.

On the other hand, due to the limitations of the existing electrolysis unit configuration and the limited cost, it is usually only possible to produce an industrial chlorine dioxide aqueous solution or a high-purity chlorine dioxide aqueous solution, which cannot be converted into a process in the process, so that the electrolysis process can be performed. The inability to flexibly respond to various conditions that may occur during the electrolysis process, resulting in a significant increase in the amount and purity of the chlorine dioxide aqueous solution produced. In addition, in the mixing tank that receives the chlorine dioxide released by the electrolysis, the convection of the ambient temperature causes a relative increase in the internal temperature of the mixing tank; and since the boiling point of the chlorine dioxide is only 11 ° C, the inside of the mixing tank The concentration of the stored chlorine dioxide aqueous solution will be vaporized by temperature rise, thus forming a phenomenon in which one side of the electrolytic production increases the concentration while gasifying and lowering the concentration. This phenomenon not only reduces the concentration but also reduces the yield, and increases the time of the electrolysis operation. As a result, the quality of the electrolyzed product is unstable. Although the related improved technology has been known, the effect is still limited.

Furthermore, the tank containing the aqueous solution of chlorine dioxide usually still has a residual chlorine dioxide solution, and the residual chlorine dioxide will produce a pungent smell in the plant and the worker The pollution of the staff, therefore, how to effectively treat the chlorine dioxide remaining in the tank is still to be resolved.

Therefore, in order to overcome the aforementioned problems, the present invention has been produced.

The main object of the present invention is to provide a system for producing an aqueous solution of chlorine dioxide, by which a by-product of chlorine dioxide is removed by a combination of an ion absorbing device, a cation adsorption membrane and an intake pipe having a special filtration precision; The combination of the first mixing tank provided with the overflow port and the finished storage tank receiving the first mixing tank and the electrolysis related device are arranged, and a large amount of chlorine dioxide aqueous solution can be generated at a fixed time, thereby correspondingly The requirement for the production of a low-purity industrial chlorine dioxide aqueous solution; by arranging a second mixing tank provided with an exhaust port and an electrolysis-related device, a high-purity, food-grade can be produced at a fixed time by the principle of siphon action An aqueous solution of chlorine dioxide, thereby responsive to the need for the production of a higher purity food aqueous chlorine dioxide solution; by providing a plurality of helical circulation channels in the first mixing tank, the second mixing tank and the finished storage tank, The temperature of the finished chlorine dioxide aqueous solution can be effectively maintained below 11 °C, so that the chlorine dioxide process will not be produced and lost. ; Tank mixing at the time of electrolysis unit electrolysis operation can temporarily shut down while another group of the unit performs the discharge of the residual chlorine dioxide therein, so as to solve the problem of plant personnel may be inhaled residual chlorine dioxide gas.

To achieve the above object, the present invention provides a system for producing an aqueous chlorine dioxide solution comprising an electrolytic cell, a gas water separation device and a first mixing tank. The electrolytic cell is used to produce chlorine dioxide vapor by electrolysis. The gas-water separation device is connected to the electrolytic cell for performing gas-water separation treatment on the chlorine dioxide vapor to generate a chlorine dioxide gas. The first mixing tank is connected to the gas-water separation device for receiving and mixing the chlorine dioxide gas with pure water to An aqueous solution of chlorine dioxide is produced. When implemented, it further includes a condensing device connected to the gas-water separating device for cooling the chlorine dioxide gas to generate a cooled chlorine dioxide gas; wherein the first mixing tank is The condensing device is connected for receiving and the cooled chlorine dioxide gas is mixed with pure water to produce the aqueous chlorine dioxide solution. In practice, it further includes a finished storage tank connected to the first mixing tank for receiving and storing the aqueous chlorine dioxide solution flowing out of the first mixing tank. In practice, it further includes an air suction device, and wherein the first mixing tank is provided with an air suction port, and the air suction device is connected to the air suction port of the first mixing tank for pumping the first mixing tank.

In implementation, the electrolysis cell further comprises a cation adsorption membrane disposed around the electrode for adsorbing the negatively charged ions in the electrolysis cell.

In practice, the first mixing tank is connected to the gas-water separating device by an air inlet tube, wherein the air inlet tube is formed of titanium powder and has a filtering precision of 5 μm to 30 μm for extracting the chlorine dioxide. gas.

In implementation, it further includes a water supply device for connecting with the first mixing tank to supply pure water to the first mixing tank.

In an embodiment, the method further includes a temperature control system, the temperature control system includes: a plurality of spiral circulation channels respectively disposed on the outer circumference of the first mixing tank and the electrolytic tank, and spaced apart from each other a plurality of sections, each of which is provided with at least one coolant inflow port; a coolant supply unit for supplying a coolant and flowing into the spiral circulation channels via the coolant inflow port In one case, when the coolant from the coolant supply unit flows through the spiral circulation passages through the coolant inlet, the first mixing tank and the electrolytic tank can be effectively cooled.

In one embodiment, it further includes an ion absorbing device disposed between the electrolysis cell and the gas water separation device to absorb ions in the chlorine dioxide vapor from the electrolysis cell.

1‧‧‧electrolyzer

2, 2'‧‧‧Soda water separation device

3, 3'‧‧ ‧ condensing device

10‧‧‧Metal rod

11‧‧‧Electrode

12‧‧‧Cation adsorption membrane

13, 131, 132, 133, 414, 415, 416‧‧ ‧ spiral circulation channels

1311, 1321, 1331‧‧‧ coolant inlet

1312, 1322, 1332‧‧‧ coolant outlet

14‧‧‧Exhaust pipe

15‧‧‧First direction筏

16‧‧‧Second direction筏

17‧‧‧ Third Direction筏

18‧‧‧ Release of chlorine dioxide

19‧‧‧ chlorine dioxide output tube

41‧‧‧First mixing tank

411‧‧‧ overflow

412‧‧‧Air pump

413‧‧‧Intake pipe

42‧‧‧ finished product storage tank

43, 43'‧‧‧Second mixing tank

431, 431'‧‧‧ pumping port

432, 432' ‧ ‧ spare pump

51‧‧‧First Flow Control Unit

52‧‧‧Second flow control unit

53, 53' ‧ ‧ aspirator

6, 6'‧‧‧ water supply unit

7‧‧‧temperature control system

71‧‧‧cooler

72‧‧‧ coolant supply unit

72a‧‧‧Export

72b‧‧‧Return port

73‧‧‧ coolant supply pump

8, 8'‧‧‧ ion absorption device

9, 9'‧‧‧ chlorine series impurity absorption device

A, B‧‧‧ directional valve

Fig. 1 is a block diagram showing the structure of an embodiment of a system for producing an aqueous solution of chlorine dioxide.

Fig. 2 is a structural view showing an electrolytic cell 1 of an embodiment of a system for producing an aqueous chlorine dioxide solution of the present invention.

Fig. 3 is a plan view showing the electrolytic cell 1 of the embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

Figure 4 is a block diagram showing the architecture of another embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

Figure 5 is a block diagram showing the architecture of another embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

Fig. 6 is a structural view showing the first mixing tank 41 of the embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

Figure 7 is a block diagram showing the architecture of another embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

Figure 8 is a block diagram showing the architecture of another embodiment of the system for producing an aqueous chlorine dioxide solution of the present invention.

In the following, the same reference numerals are used to refer to the same or equivalent elements in the drawings.

Referring to FIG. 1 of the present invention, a system for producing an aqueous chlorine dioxide solution of the present invention comprises: an electrolytic cell 1, a gas-water separation device 2, a condensing device 3, a first mixing tank 41, an air pump 412, A finished product storage tank 42, a first flow control unit 51, a second flow control unit 52, a water supply device 6, and a temperature control system 7. The electrolytic cell 1 is used to produce chlorine dioxide vapor by electrolysis. The gas-water separation device 2 is connected to the electrolytic cell 1, and the chlorine dioxide gas is subjected to gas-water separation treatment to generate a chlorine dioxide gas. The condensing device 3 is connected to the gas-water separation device 2, and is configured to cool the chlorine dioxide gas from the gas-water separation device 2 to generate a chlorine dioxide gas after the temperature-lowering treatment. This condensing device 3 is in a state of ensuring that the chlorine dioxide gas can be maintained at a low temperature (11 ° C or lower). The first mixing tank 41 is connected to the condensing device 3 for reception, and the cooled chlorine dioxide gas is mixed with the treated pure water from the water supply device 6 to produce a chlorine dioxide aqueous solution. In another embodiment, the gas-water separation device 2 and the condensing device 3 in FIG. 1 can also be interchanged to achieve the technical effects of the present invention, and the configurations are also applicable to other embodiments of the present invention. So implemented.

The electrolytic cell 1 includes an anode, a cathode, and an exhaust pipe 14, and the two electrodes are spaced apart by a high-density transparent film (not shown), and are electrolyzed by a DC power source. The present invention performs electrolysis operations by salt electrolysis or electrochemical methods, and will not be described herein. The anode itself is provided with a metal mesh and the outer layer thereof is plated with a corrosion-resistant noble metal such as a combination of ruthenium, osmium or a combination of the foregoing metals as the anode for electrolysis; the cathode is composed of titanium or other Conventional metal; the anode is formed by a circular multi-layer coating of the same length and different diameters centered on the main axis, and a gapped electrolysis net having a circular multi-layer. Referring to FIG. 2 of the present invention, the electrolytic cell 1 further includes an electrode 11 , and a cation adsorption film 12 is disposed around the electrode 11 , and the cation adsorption film can be sprayed onto the high-density transparent film. The cation adsorption membrane 12 is for adsorbing negatively charged ions in the electrolytic cell, such as chlorate (ClO ^3- ) and chlorite (ClO ^2- ), so that chlorine-containing by-products which may be contained in the electrolysis process are waiting for negative ions. Adsorption is carried out. In addition, referring to FIG. 3, the cathode is a plurality of metal rods 10 (such as copper), and the plurality of metal rods are arranged in parallel and centered on the electrode 11 (the electrode 11 can be divided into three centers) In an aliquot manner, it is also possible to set two cathodes for other equal parts such as two equal parts or more than three cathodes if more than three equal parts are provided, thereby improving the efficiency of electrolysis. Further, in another embodiment, since ions in the portion overflowing to the cation adsorption film 12 during the electrolysis are not efficiently adsorbed, the chlorine dioxide vapor may still be generated in the electrolysis process. By-product. Therefore, in order to solve the technical problem, the system of the present invention further includes an ion absorbing device 8 disposed between the electrolytic cell 1 and the gas-water separating device 2 for absorbing the chlorine dioxide from the electrolytic cell 1. The aforementioned residual ions in the vapor that are not adsorbed. In another embodiment, a plurality of the ion absorbing devices 8 can be arranged in parallel or in series. Parallel connection of a plurality of the ion absorbing devices 8 can process a larger amount of chlorine dioxide vapor at a time in response to a large amount of chlorine dioxide vapor; and a plurality of the ion absorbing devices 8 can be upgraded in series. The effectiveness of the chlorine dioxide vapor is such that chlorine and various by-products in the chlorine dioxide vapor can be more effectively removed in response to an excessive amount of toxic by-products of the chlorine dioxide gas.

Referring to FIG. 2, the turbulence generating device for the electrolytic cell 1 is disposed at the outer periphery of the electrolytic cell 1, and includes: a spiral circulation channel 13 disposed in the electrolysis The outer circumference of the tank 1 and the spiral circulation passage 13 can be divided into a plurality of sections (131, 132, 133) and each of which is provided with at least one coolant inflow port (1311, 1321, 1331). The temperature control system 7 is for providing a coolant, when the coolant from the temperature control system 7 flows through the spiral circulation channels through the coolant inlets (1311, 1321, 1331), respectively. The electrolyte in the electrolytic cell is disturbed. In the electrolysis process, the electrolyte in the electrolytic cell 1 is driven by the turbulence, so that the void generated by the electrolyte at the moment of generating chlorine dioxide gas (product) can be quickly replenished, thereby improving the efficiency of electrolysis. . Thereafter, the coolant outlets 1312, 1322, and 1332 are again discharged to the one of the temperature control systems 7 to be recirculated by the cooler 71. Such a large-area three-stage, independent heat exchange causes the electrolyte in the electrolytic cell 1 to generate different directions and types of turbulence, and the underlying electrolyte is lifted to the periphery of the electrode 11 by the turbulence. Quickly replenish the voids generated by the instantaneous production of the electrolyzed product, thereby producing a stable quality chlorine dioxide vapor, which effectively shortens the process time. In addition, in another embodiment, the spiral surrounding passages 131, 132, 133 may also have a certain space (pitch) between them without being adjacent to each other, thereby generating different degrees of spoiler. In another embodiment, the spiral surrounding channel 13 of the present invention can also be set to 2, 4, or 4 segments instead of the third segment of the present embodiment as needed to generate different degrees and types of spoiler.

Referring to FIG. 1 , the first flow control unit 51 can be disposed between the electrolytic cell 1 and the gas-water separation device 2 , between the gas-water separation device 2 and the condensation device 3 or the condensation device 3 and the Between the first mixing tanks 41, for controlling the flow rate and flow rate of the chlorine dioxide from the electrolytic cell 1 to the first mixing tank 41, whereby the gas production rate of the electrolytic cell 1 should be too fast The loss of chlorine dioxide product is caused; or the rate of pumping is increased when the gas production rate is too slow. Further, the finished product storage tank 42 is connected to the first mixing tank 41 for receiving and storing the aqueous chlorine dioxide solution flowing out of the first mixing tank 41. In another embodiment, the first mixing tank 41 is further provided with an overflow port 411, and when the chlorine dioxide aqueous solution gradually fills the first mixing tank 41, it can overflow to the first mixing tank 41 through the overflow port 411. The finished product storage tank 42 replaces the filled first mixing tank 41 without stopping the machine. The advantage of the present invention in such a manner is that after many experiments, it is confirmed in the present invention. Such a configuration in the embodiment can effectively increase the production of chlorine dioxide and shorten the total electrolysis time, but the chlorine dioxide of the aqueous chlorine dioxide solution can only be about 50% to 70%, and about 2000 to 2500 ppm. In another embodiment, a second flow control unit 52 is further disposed between the first mixing tank 41 and the finished storage tank 42 for controlling the flow rate of chlorine dioxide (overflow) to the finished storage tank 42. And the flow rate, so that when the (overflow) flow is too large, the waste product 42 is prevented from being full and waste is caused.

Referring to FIG. 4 of the present invention, in another embodiment of the present invention, a second mixing tank 43 is further included, which is connected to the condensing device 3 for cooling the cooling device 3 from the condensing device 3 The chlorine dioxide gas is mixed with the treated pure water from the water supply device 6, and the second mixing tank 43 has an air suction port 431 and an air extracting device 53, which is the pumping with the second mixing tank 43 The gas port 431 is connected to evacuate the second mixing tank 43 at a predetermined speed and amount. It should be noted that the air extracting device 53 drives the portion of the gas above the second mixing tank 43 instead of the portion of the chlorine dioxide aqueous solution therein, and drives the electrolytic cell 1 through the principle of siphoning. The chlorine dioxide vapor exiting first enters the gas-water separation unit 2, and the chlorine dioxide gas re-enters the condensation unit 3. Finally, the cooled chlorine dioxide gas enters the second mixing tank 43 without relying on the flow control unit or the pump 412 listed in the foregoing embodiment to effectively drive the chlorine dioxide vapor in the pipeline. The flow in. It has been experimentally confirmed that such a configuration in this embodiment of the present invention can effectively increase the chlorine dioxide purity of the aqueous chlorine dioxide solution to 95% or more and 2700 ppm to 3300 ppm. Further, the monochlorine series impurity absorbing device 9 is connected to the second mixing tank 43 and the air extracting device 53, and the gas extracted by the air extracting device 53 containing chlorine dioxide is subjected to purification treatment, and the chlorine series impurity is absorbed. The detailed operation principle and composition of the device 9 will be described below.

In addition, referring to FIG. 5, the embodiments of FIG. 1 and FIG. 2 of the present invention can also be combined and operated. The key point is that the pipeline configuration after the condensing device 3 needs to be divided into two routes, route 1 (please refer to the illustration Is the condensing device 3 connected to the first mixing tank 41 and its subsequent pipeline as shown in the upper right half of Fig. 5; the route 2 (please refer to the illustration) is as shown in the lower right half of Fig. 5. The condensing unit 3 is connected to the second mixing tank 43 and its subsequent lines, and the two routes are controlled by a directional valve A to operate independently. In other words, the user can switch between route 1 and route 2 in accordance with the actual situation of producing chlorine dioxide and immediate demand. For example, Route 1 is used when a higher yield of aqueous chlorine dioxide solution (such as an aqueous solution of chlorine dioxide for industrial use) is required, and when a higher purity aqueous solution of chlorine dioxide (such as a food grade chlorine dioxide aqueous solution) is required 2.

Referring to FIG. 6, the first mixing tank 41 is connected to the condensing device 3 by an air inlet pipe 413. In another embodiment, the first mixing tank 41 is also the air inlet pipe 413. The gas-water separation device 2, the ion absorption device 8, or the condensation device 3 are connected. In other words, the intake pipe 413 is a pipe that connects the first mixing tank 41 with other tanks or devices, and the intake pipe 413 is a pipe that connects the second mixing tank 43 with other tanks or devices. The intake pipe 413 is formed of titanium powder and has a filtration precision of 5 μm to 30 μm and a relative gas permeability coefficient of 5×10 ⁻⁴ L/cm ² minPa, and is used for extracting the cooled chlorine dioxide for pumping. In the process, the cooled chlorine dioxide gas is filtered, and by-products such as residual chlorine-containing by-products, impurities, and the like are removed by filtration. On the other hand, the cooled chlorine dioxide (or chlorine dioxide gas) treated by the intake pipe 413 which is formed by titanium powder and having a filtration precision of 5 μm to 30 μm enables small molecular weight of chlorine dioxide, so that The more solution is combined with the treated pure water treated by the water supply device 6 in the subsequent treatment process of the present invention, and effectively reduces the strong oxidizing ability of the chlorine dioxide gas of the present invention when mixed with general pure water. Loss. Further, the intake pipe 413 having a filtration accuracy of 5 μm to 30 μm of the present invention has a difference of about 2000 times from a conventional intake pipe having a hole diameter of 2 mm or more, so that the purity of the chlorine dioxide aqueous solution produced by the present invention can be maximized. Jiahua is far superior to the ones that can be achieved by conventional methods. Further, the use of the intake pipe 413 formed by the titanium powder and having a filtration accuracy of 5 μm to 30 μm in the first mixing tank 41 can also prevent excessive generation of the first mixing tank 41 as described below after the electrolytic production. The foam or excessive overflow will prevent one side of production and one side of waste. Further, such an intake pipe can also be used for other tanks and devices of the present invention such as the second mixing tank 43.

The water supply device 6 of the present invention comprises a redox unit, a hydrogen ion potential reduction unit or an acid-base neutralization unit for converting the pure water by redox, hydrogen ion potential reduction or acid-base neutralization, respectively. It is a slightly alkaline liquid, and the slightly alkaline liquid will not cause corrosion to the relevant pipeline of the present invention. In order to take longer for the water supply device 6 to treat the pure water supplied by the pure water source, the water supply device 6 further includes a storage tank which is disposed in the redox unit and the hydrogen ion. The potential reduction unit or the acid-base neutralization unit is configured to store the pure water processed through the units, and the storage tank is further provided with an RO reverse osmosis pure water treatment device, thereby storing the pure product therein. The water is filtered to purify the pure water.

Furthermore, the temperature control system 7 of the present invention comprises: a plurality of spiral circulation channels which are respectively disposed in the first mixing tank 41, the finished storage tank 42, the second mixing tank 43, and the electrolysis The outer circumference of the tank 1 and each of the spiral circulation passages is provided with at least one coolant inflow port. A coolant supply unit 72 is for supplying a coolant and flowing into at least one of the spiral circulation passages via the coolant inflow port. Thereby, when the coolant from the coolant supply unit 72 flows through the spiral circulation passages through the coolant inlet, the The first mixing tank 41, the finished product tank 42, the second mixing tank 43, and the electrolytic tank 1 are effectively cooled. In an embodiment, referring to FIG. 6, the first mixing tank 41, the finished product tank 42, the second mixing tank 43, and the outer circumference of the electrolytic tank 1 are respectively provided with a plurality of spiral wraps. The channel, and the plurality of helical surrounding channels may have a plurality of segments. Referring to the embodiment of FIG. 6, the plurality of sections 414, 415, and 416 disposed in the first mixing tank 41 are disposed in a manner that is spaced apart from each other and not in close proximity, whereby the temperature is increased by a plurality of stages of cooling. The performance of the control system 7 for cooling the first mixing tank 41 is greatly improved, and the technical effect is superior to the conventional spiral surrounding passage in which only a single section is provided in the mixing tank.

Referring to FIG. 7, two sets of the embodiments of the second embodiment of the present invention can be combined, and the ion absorbing device 8 is further disposed between the electrolytic cell 1 and the gas-water separation device 2, and The pipeline arrangement after the electrolytic cell 1 is divided into two routes, and the ion absorbing device 8 may be a physical or chemical filtering device for filtering ions or an insulating device capable of being connected to the temperature control system 7 (maintained at 0- Around 3 ° C), so that chlorine series impurities or ions are completely removed by filtration or cooling. The route X of the present embodiment is as shown in the upper half of Fig. 7; the route Y is as shown in the lower half of Fig. 7, and the two routes are controlled by a directional valve B to operate independently. It can be seen that the user can switch the two routes according to the actual situation of producing chlorine dioxide. When the upper half of the unit (1, 8, 2, 3, 43, 53; route X) begins to operate, the lower half of the unit (1', 8', 2', 3', 43', 53'; Route Y) is partially suspended, as explained below: when the upper half of the unit starts to operate, the chlorine series impurity absorption device 9' in the lower half of the unit will still operate, first in the first mixing tank 43 The residual chlorine dioxide gas is sucked into the first mixing tank 43' of the lower half via the suction device 53, and then the residual chlorine dioxide gas is treated into a harmless gas via the chlorine series impurity absorbing device 9'. . Similarly, when the lower half of the unit starts to operate, the air pump 53 in the upper half of the unit The same steps as described above are also performed with the chlorine-based impurity absorbing apparatus 9. Thereby, the worker of the factory building using the unit of the present invention can not only avoid the pungent smell of residual chlorine dioxide gas, but also avoid damage to the body caused by inhalation of chlorine dioxide gas.

Further, the chlorine series impurity absorption device 9 is a carbon nanotube comprising an alumina ceramic, a titanium dioxide ceramic and a zirconia ceramic, and calcining the graphite at 3000 ° C (the carbon nanotube can produce 10 ¹² -10 At least one of ¹⁴ HZ/sec far infrared rays, a nano ceramic filter core, a rare earth element, and activated carbon, thereby completely removing chlorine gas in the chlorine dioxide gas. In another embodiment, a plurality of the chlorine series impurity absorbing means 9 may be arranged in parallel or in series. By connecting a plurality of the chlorine series impurity absorption devices 9 in parallel, the processing amount of a larger amount of chlorine dioxide gas can be processed at one time in response to a large amount of chlorine dioxide gas; and a plurality of the chlorine series impurity absorption devices 9 are connected in series. It is possible to improve the efficiency of treating the chlorine dioxide gas, so that chlorine gas and various by-products in the chlorine dioxide gas can be more effectively removed if the toxic by-product of the chlorine dioxide gas is excessive. Further, the reason why the chlorine dioxide vapor from the electrolytic cell 1 is treated first by using the gas-water separation device 2 is that if the chlorine dioxide gas entering the chlorine-based impurity absorption device 9 contains water remaining, it will be in the process. Ozone (O ₃ ), a substance harmful to human body, is produced, and ozone has long been banned by the European Union for various disinfection purposes.

Referring to FIG. 8, another embodiment of the two embodiments of the second embodiment of the present invention can be combined, and the ion absorbing device 8 is further disposed in the electrolytic cell 1 and the gas-water separation device 2. The pipeline configuration after the electrolytic cell 1 is also divided into two routes. The difference from the embodiment of Fig. 7 is that the chlorine series impurity absorbing means 9, 9' are connected to the second mixing tanks 43, 43' and the air extracting means 53, 53' for the pumping The residual gas containing chlorine dioxide extracted by the devices 53, 53' is directly subjected to purification treatment. Thereby, the worker of the factory building using the unit of the present invention Not only do you not smell the pungent smell of residual chlorine dioxide gas, but also avoid physical damage caused by inhalation of chlorine dioxide gas.

Next, the overall operation of the present invention will be described. Taking the embodiment of FIG. 5 as an example, the present invention is to set the electrolytic cell 1, the first mixing tank 41 as a group of electrolytic working units; or the electrolytic cell 1 and the The second mixing tank 43 is set as a group of electrolysis working units, and the electrolysis working unit can be operated with a group of water supply devices 6, a group of temperature control systems 7, a group of condensing devices 3 and a group of gas water separation devices 2. First, a water supply source supplies the pure water to the water supply device 6 for treatment by the water supply pressure pump to be treated as pure water, and is output to the first mixing tank 41 (or the second mixing tank 43). The water front work is completed.

When the operation of the system of the present invention is started, the embodiment of FIG. 5 is taken as an example. First, the directional valve A is first adjusted to the opening route 1, and the first direction in the electrolytic cell 1 is set according to the characteristics of the electrolytic solution. After the opening direction of the second direction 筏16 and the third direction 筏17, the coolant flows from the temperature control system 7 through the first spiral circulation channel 131, the second spiral circulation channel 132, and the third The spiral circulation passage 133 causes the electrolyte in the electrolytic cell 1 to be disturbed, and the electrolyte is driven by the turbulence, so that the void generated at the moment when the electrolyte is generated is quickly replenished. The high temperature generated in the electrolysis operation can be lowered. The successively produced chlorine dioxide vapor is pumped through the chlorine dioxide venting port 18 to the outside along the chlorine dioxide output pipe 19 by the pump 412 to the ion absorbing device 8 to absorb the unadsorbed residue of the chlorine dioxide vapor. The ions are then pumped to the gas-water separation unit 2 for vapor and water separation to produce chlorine dioxide gas. Thereafter, the chlorine dioxide gas is sent to the condensing device 3 to be cooled, and the cooled chlorine dioxide gas is passed through the inlet pipe 413 to have a filtration precision of 5 μm to 30 μm. Negatively charged ions such as chlorine by-products are again subjected to filtration treatment and transported to the first A mixing tank 41. In the first mixing tank 41, the cooled chlorine dioxide gas is treated by a gas-liquid mixing mechanism (not shown), and mixed with the treated pure water (slightly alkaline). Aqueous chlorine dioxide solution (pH value increased from 2.2 to near neutral). When the chlorine dioxide aqueous solution gradually fills the first mixing tank 41, it flows to the finished product storage tank 42 via the overflow port 411. The adjustable temperature sensor disposed in the first mixing tank 41 and the finished storage tank 42 (or the adjustable temperature sensor configured in the electrolytic tank 1 and the second mixing tank 43) is higher than the pre-heating temperature The set value (preferably 8 to 11 ° C, more preferably 2 to 3 ° C) is to signal an electronic control device (not shown) to cause the coolant supply pump 73 to pump the coolant to cool down and flow into the spiral circulation. The coolant flow of the passage is subjected to a spiral circulation type overall flow cooling until the high temperature message cancellation of the adjustable temperature sensor on the aforementioned device is stopped. During the gas production operation of the electrolytic cell 1 and the pumping operation of the air pump 412, if the electronic control unit device receives the temperature rise message of the adjustable temperature sensor again, the above action will be repeated, and the coolant supply pump 73 will be cooled again. The agent is pumped to the first mixing tank 41 or the finished product tank 42 for cooling and cooling. At the same time as the start of the electrolysis operation, the water supply device 6 also re-processes the pure water, and again treats the pure water supplied from the water supply source into a treated pure water and outputs it to the second mixing tank. 43, by which another set of electrolysis working units (the electrolysis cell 1 and the second mixing tank 43; route 2) are used. Thereafter, if the electrolysis is allowed to switch, the directional valve A is adjusted to open route 2, and if it is to continue on route 1, please see the description of the next paragraph. In the route 2, the air extracting device 53 drives the chlorine gas generated by the electrolytic cell 1 into the ion by extracting the gas portion above the second mixing tank 43 via the principle of siphoning. The absorption device 8 is re-entered into the condensation device 3. Similarly, the condensing device 3 is also provided with an adjustable temperature sensor, and if the temperature is higher than the preset value, an electronic control device (not shown) is sent to cause the coolant supply pump 73 to pump the coolant to the The condensing device 3 performs cooling to thereby produce the chlorine dioxide gas produced. The body is maintained at a desired low temperature state (preferably 11 ° C or less, more preferably 2 to 3 ° C). Finally, the cooled chlorine dioxide gas enters the second mixing tank 43, and at the same time as the electrolysis operation of the route starts, the water supply device 6 also re-processes the pure water, if the electrolysis is allowed The switching is performed, and the pure water supplied from the water supply source is again processed to be treated pure water and output to the first mixing tank 41 (route 1).

According to the electrolysis operation of the present invention, the unit of the above-mentioned route 1 may be a plurality of electrolytic cells 1, a gas-water separation device 2, a condensing device 3, and a first mixing tank 41. First, the water supply device 6 first pretreats the pure water required for the first first mixing tank 41, and then supplies the treated pure water to the first mixing tank 41. When the direction of the route 1 is started, taking the combination of the first mixing tank 41 and the electrolytic cell 1 as an example, the first mixing tank 41 of the first group is combined with the first group of electrolytic cells 1 to perform the first round of the stage. Operation; when the first electrolytic cell performs an electrolysis operation, the water supply device 6 pre-treats the pure water required for the first mixing tank 41 of the second group, and then supplies another treated pure water to the second group. The first mixing tank 41, when the second group of chlorine dioxide supply tanks are filled with the treated pure water, the first round of electrolysis operation will also be completed, so that the next round (second round) stage can be performed. Sex work, and so on, directional valve A can still be on route 1 without switching to route 2. The combination of the plurality of sets of the second mixing tank 43 and the electrolytic cell 1 is also arranged. In other words, the embodiment of the present invention can be configured by a plurality of sets of the combination of the electrolytic cell 1 and the first mixing tank 41. The combination of the electrolytic cell 1 and the second mixing tank 43 is switched on the routes 1 and 2 or the route 1 or the route 2 is continuously maintained, and the entire operation process is rationalized and high-efficiency.

Similarly, taking the embodiment of FIG. 7 as an example, the directional valve B is first adjusted to the opening route X, and then the chlorine dioxide vapor successively produced by the electrolytic cell 1 is permeable to the chlorine dioxide through the suction pipe 14. The outlet 18 is pumped outward along the chlorine dioxide output pipe 19 by the backup pump 432 The ion absorption device 8 removes the by-product ions remaining in the chlorine dioxide vapor, and then pumps the gas to the gas-water separation device 2 to separate the vapor and water to generate the chlorine dioxide gas. Thereafter, the chlorine dioxide gas is sent to the condensing device 3 to be cooled. Similarly, if the temperature sensor of the condensing device 3 is higher than the preset value, the electronic control device (not shown) is sent to enable the coolant supply pump 73 to pump the coolant to the coolant. The condensing device 3 is cooled to maintain the produced chlorine dioxide gas in the aforementioned ideal low temperature state. Thereafter, the cooled chlorine dioxide gas is passed through a filtration precision of 5 μm to 30 μm of the intake pipe (not shown in FIG. 7) to carry a negative ion such as a chlorine by-product. The filtration process is performed and sent to the second mixing tank 43. In the second mixing tank 43, the cooled chlorine dioxide gas is treated by a gas-liquid mixing mechanism (not shown), and mixed with the treated pure water (slightly alkaline). Aqueous chlorine dioxide solution (pH value increased from 2.2 to near neutral). At this time, the adjustable temperature sensor disposed in the second mixing tank 43 (or the adjustable temperature sensor configured by the electrolytic tank 1 and the second mixing tank 43) is higher than a preset value if the temperature is measured ( Preferably, 8 to 11 ° C, more preferably 2 to 3 ° C, a signaling electronic control device (not shown) is used to cause the coolant supply pump 73 to pump the coolant to cool down, and to flow into the spiral circulation channel for cooling. The flow of the agent is subjected to a spiral circulation of the overall flow cooling until the high temperature message cancellation of the adjustable temperature sensor on the device stops. During the gas production operation of the electrolytic cell 1 and the pumping operation of the air pump 412, if the electronic control unit device receives the temperature rise message of the adjustable temperature sensor again, the above action will be repeated, and the coolant supply pump 73 will again be used to cool the coolant. The pumping is sent to the second mixing tank 43 to cool down. At the same time as the start of the electrolysis operation, the water supply device 6 also re-processes the pure water, and again treats the pure water supplied from the water supply source into a treated pure water and outputs it to the second mixing tank. 43', in order to prepare another group of electrolysis work units (route Y). Similarly, this embodiment can have multiple sets of the electrolytic cell 1 and the first The combination of the two mixing tanks 43 is combined with the combination of the plurality of sets of the electrolytic cell 1 and the second mixing tank 43' in the routes X and Y, and the entire operation process is rationalized and efficient.

Further, in the continuous production of the chlorine dioxide operation described above, the electrolyte is mixed and mixed to a desired acid-base concentration, and then discharged to a storage tank to be stored and fed to the electrolytic cell at the beginning of the electrolysis operation. Please refer to Figure 2, in the electrolysis operation, if the acid-base concentration of the electrolyte is detected to be lower than the set value, when the supply valve is opened, the waste liquid discharge valve below the electrolytic cell is simultaneously opened, and the two-speed start is started in this order. The motor is used to adjust the supply rate of the electrolyte and the rate of replenishment. Until the end of the feeding time, the two-speed motor, the waste liquid discharge valve and the electrolyte supply valve are closed in reverse order. In other words, when the electrolyte of the present invention is automatically fed from the storage tank, the waste liquid is discharged synchronously below. Or the liquid level controller controls the liquid level of the predetermined discharge amount, closes the waste liquid discharge valve below, and then opens the upper two-speed motor, and supplies the micro-feed to the full electrolyte level and then closes the two-speed motor. Or, while feeding and electrolysis on one side, the feeding speed is controlled by the micro feed of the two-speed motor, and the waste liquid discharge pipe uses the liquid level principle, and how much amount of waste liquid is discharged.

Therefore, the present invention has the following advantages:

1. The chlorine dioxide generated by treating the ion absorbing device, the cation adsorption film, and the intake pipe having a filtration precision of 5 μm to 30 μm according to the present invention, and the ion absorbing device can be disposed in parallel or in series, and By reducing the by-products in the aqueous chlorine dioxide solution (carcinogens) to a minimum, the strong oxidation effect of chlorine dioxide itself is maintained and optimized.

2. The present invention configures a combination of a first mixing tank provided with an overflow port and a finished storage tank receiving the first mixing tank and an electrolysis related device, and can generate a larger amount of chlorine dioxide aqueous solution at a fixed time. This requires the production of a lower purity industrial chlorine dioxide aqueous solution.

3. The present invention configures a second mixing tank provided with an air suction port and an electrolysis related device, by means of a rainbow The principle of suction action can produce a high-purity, food-grade aqueous chlorine dioxide solution at a fixed time, thereby requiring the production of a higher purity food chlorine dioxide aqueous solution.

4. By the conversion of the directional valve, the first mixing tank provided with the overflow port, the combination of the finished storage tank receiving the first mixing tank and the electrolysis related device, and the second mixing tank provided with the suction port and the electrolysis related device The combination can be quickly converted to effectively respond to different production situations.

5. By providing a plurality of spiral circulation channels in the first mixing tank, the second mixing tank and the outer periphery of the finished storage tank, the temperature of the finished chlorine dioxide aqueous solution can be effectively maintained below 11 ° C, so that the present invention The chlorine dioxide process will not be lost on one side of production.

6. According to the configuration of the present invention, the electrolysis unit of the present invention can simultaneously discharge the mixing tank of another group of units that are temporarily shut down during the electrolysis operation, thereby discharging the residual chlorine dioxide gas, thereby greatly reducing the plant staff. Risk of inhaling residual chlorine dioxide gas.

The above is a specific embodiment of the present invention and the technical means employed, and many variations and modifications can be derived therefrom based on the disclosure or teachings herein. The function shall not be considered to be within the technical scope of the present invention, and it shall be considered in the technical scope of the present invention.

According to the above disclosure, the present invention can achieve the intended purpose of the invention, and provides a system for producing an aqueous solution of chlorine dioxide, which has the value of industrial utilization and practicality, and proposes an invention patent application according to law.

Claims (6)

A system for producing an aqueous solution of chlorine dioxide, comprising: an electrolytic cell for electrolytically producing chlorine dioxide vapor, wherein the electrolytic cell further comprises a cation adsorption film, the cation adsorption film is disposed around an electrode for Adsorbing the negatively charged ions in the electrolytic cell; a gas-water separation device connected to the electrolytic cell for performing gas-water separation treatment on the chlorine dioxide vapor to generate a chlorine dioxide gas; a first mixing tank; Is connected to the gas-water separation device for receiving and mixing the chlorine dioxide gas with pure water to produce an aqueous solution of chlorine dioxide; wherein the first mixing tank is separated from the gas water by an intake pipe The device is connected, wherein the intake pipe is formed of titanium powder and has a filtering precision of 5 μm to 30 μm for extracting the chlorine dioxide gas; and an ion absorbing device for the electrolysis cell and the gas-water separation device Intervening to absorb ions from the chlorine dioxide vapor from the electrolytic cell. The system for producing an aqueous solution of chlorine dioxide according to claim 1, further comprising a condensing device connected to the gas-water separating device for cooling the chlorine dioxide gas to generate a temperature-lowering treatment The chlorine dioxide gas; wherein the first mixing tank is connected to the condensing device for receiving and the cooled chlorine dioxide gas is mixed with pure water to produce the chlorine dioxide aqueous solution. The system for producing an aqueous chlorine dioxide solution according to claim 1 or 2, further comprising a finished product storage tank connected to the first mixing tank for receiving and storing and flowing out of the first mixing tank The aqueous chlorine dioxide solution. A system for producing an aqueous solution of chlorine dioxide as described in claim 1, which further comprises an exhausting device And wherein the first mixing tank is provided with an air suction port, and the air suction device is connected to the air suction port of the first mixing tank for pumping the first mixing tank; the system further comprises a chlorine series impurity absorption The apparatus is connected to the air suction means for purifying the gas containing the chlorine dioxide extracted by the air suction means. The system for producing an aqueous chlorine dioxide solution according to claim 1 or 4, further comprising a water supply device for connecting to the first mixing tank to supply pure water to the first mixing tank. The system for producing an aqueous solution of chlorine dioxide according to claim 1 or 4, further comprising a temperature control system, the temperature control system comprising: a plurality of spiral circulation channels respectively disposed in the first mixture a tank and an outer circumference of the electrolytic tank, and having a plurality of sections spaced apart from each other, wherein each of the sections is provided with at least one coolant inflow port; a coolant supply unit for providing a coolant via the At least one of the coolant flow inlets flowing into the spiral circulation passages; thereby, when the coolant from the coolant supply unit flows through the spiral circulation passages through the coolant flow inlets, A mixing tank and the electrolytic tank are effectively cooled.