Device for removing organic matters in solution

Abstract

The invention discloses a device for removing organic matters in a solution, and relates to the technical field of hydrometallurgy, the device mainly comprises a primary reaction chamber and an ultrasonic strengthening device, the primary reaction chamber is provided with a stock solution inlet, a waste gas outlet and a primary outlet, the primary reaction chamber is internally provided with an injection device, the stock solution inlet is used for introducing a raw material solution, and the waste gas outlet is used for introducing a waste gas outlet; the spraying device is used for spraying a reactant, the waste gas outlet is used for discharging gas generated by reaction, the primary outlet is used for enabling a solution after reaction to flow out, and the ultrasonic strengthening device is connected with the primary reaction chamber and is used for creating a reaction environment in which chemical reaction in the primary reaction chamber can be carried out. According to the invention, organic matters in the solution can be rapidly and efficiently treated, and the treatment effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of hydrometallurgy, and in particular to a device for removing organic matter in a solution. Background Art

[0002] The Bayer process is currently the most widely used method for processing bauxite to produce alumina. In the process of producing alumina by the Bayer process, as the mother liquor in the Bayer process circulates, the organic matter in the sodium aluminate solution from the bauxite undergoes multiple high-pressure dissolutions, gradually transforming from macromolecular organic matter to small molecular organic matter that is difficult to decompose, and finally transforming into sodium carbonate, sodium oxalate and other small molecular organic sodium salts, and gradually accumulating with the circulation of the sodium aluminate solution, and reaching a certain concentration will seriously affect the Bayer process production cycle, crystal nucleus formation, seed decomposition and alumina product quality. At present, the organic matter is usually treated and removed by passing a treatment agent into a solution with organic matter, but only by passing the agent treatment, due to the limitation of the reaction conditions, there will be many chemical reactions that are difficult to carry out, resulting in insufficient removal of the organic matter, affecting the treatment effect. Therefore, a device for removing organic matter in a solution is needed, which can quickly and efficiently treat the organic matter in the solution, and has a good treatment effect. Summary of the invention

[0003] The purpose of the present invention is to provide a device for removing organic matter in a solution to solve the problems existing in the above-mentioned prior art, and to be able to quickly and efficiently treat organic matter in a solution with good treatment effect.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a device for removing organic matter in a solution, comprising:

[0006] A primary reaction chamber, wherein the primary reaction chamber is provided with a raw liquid inlet, an exhaust gas outlet and a primary outlet, and an injection device is provided inside the primary reaction chamber, wherein the raw liquid inlet is provided at the side of the primary reaction chamber for introducing the raw liquid, the injection device is used for injecting the reactant, the exhaust gas outlet is provided at the upper part of the primary reaction chamber for discharging the gas generated by the reaction, and the primary outlet is used for the solution to flow out after the reaction;

[0007] An ultrasonic enhancement device is connected to the primary reaction chamber and is used to create a reaction environment in which a chemical reaction can be carried out in the primary reaction chamber.

[0008] Preferably, the ultrasonic enhancement device includes an ultrasonic transducer and a shell, the shell is wrapped around the outside of the ultrasonic transducer, the ultrasonic transducer is arranged below the primary reaction chamber, and includes a vibrator, a horn and an ultrasonic probe, the top end of the ultrasonic probe is connected to the bottom end of the primary reaction chamber, the bottom end is connected to the top end of the horn, the bottom end of the horn is connected to the vibrator, the vibrator is used to generate mechanical vibration, the horn is used to amplify the mechanical vibration and transmit it to the ultrasonic probe, and the ultrasonic probe is used to transmit the amplified mechanical vibration to the primary reaction chamber.

[0009] Preferably, it also includes a heat-insulating layer, the upper layer of which is connected to the bottom surface of the primary reaction chamber, and the lower layer of which is connected to the ultrasonic probe.

[0010] Preferably, the injection device includes a motor and an inlet pipe, a centrifugal pump, a vent pipe, a jet vacuum pump and a tail pipe connected in sequence, the motor is connected to the centrifugal pump, the motor is used to drive the centrifugal pump, the inlet pipe is used to allow reactants to flow in, the reactants pass through the centrifugal pump and the vent pipe and then enter the jet vacuum pump, and the jet vacuum pump processes the reactants and then sprays the reactants in the form of a jet through the tail pipe.

[0011] Preferably, a spiral blade device is also provided at the end of the tail pipe, and the spiral blade device is used to cyclone the reactant in the jet form so that the reactant enters the primary reaction chamber in a cyclonic manner.

[0012] Preferably, it also includes a slag removal device, which is arranged in the primary reaction chamber and is used to remove waste slag produced after the reactant and the raw material liquid react. The slag removal device includes a rotating shaft, a rotating shaft motor and a scraper. The rotating shaft is arranged along the height direction of the primary reaction chamber. The output shaft of the rotating shaft motor is connected to the first end of the rotating shaft for driving the rotating shaft to rotate. The second end of the rotating shaft is fixedly connected to the scraper. The scraper is arranged at the bottom of the primary reaction chamber and is used to scrape off waste slag. A filter plate is arranged at the bottom of the scraper. The filter plate is used for reflux of the liquid after the reaction. In addition, a waste slag containing chamber is also arranged on the side of the rotating shaft away from the primary reaction chamber. The bottom of the waste slag containing chamber is connected to the bottom of the primary reaction chamber. The scraper can extend to the waste slag containing tank and can scrape the waste slag into the waste slag containing chamber.

[0013] Preferably, a volume sensor is also provided in the primary reaction chamber, and the volume sensor is used to sense the volume of the waste residue and transmit an electrical signal to a control system, and the control system controls the operation of the rotating shaft motor.

[0014] Preferably, a secondary reaction chamber is further included, and a solution inlet, a liquid discharge port and a gas inlet and outlet are provided on the secondary reaction chamber. The solution inlet is connected to the primary outlet, and the liquid discharge port is provided at the bottom of the secondary reaction chamber for discharging the solution after treatment. The gas inlet and outlet are provided at the side of the secondary reaction chamber. A stirring device and a filtering device are provided inside the secondary reaction chamber. The solution after reaction in the primary reaction chamber enters the stirring device through the solution inlet, and the stirring device is used to stir the solution. The solution after stirring enters the filtering device, and the filtering device is used to filter the solution. The gas inlet and outlet are used to introduce or exhaust air into or out of the filtering device.

[0015] Preferably, the stirring device comprises a stirring shaft, a stirring paddle and a stirring motor, wherein the output shaft of the stirring motor is fixedly connected to one end of the stirring shaft, and the other end of the stirring shaft is fixedly connected to the stirring paddle, and the stirring paddle is used to stir the solution;

[0016] The secondary reaction chamber is also provided with a filter aid inlet pipe for adding filter aid, and the filter aid inlet pipe is provided with a one-way valve.

[0017] Preferably, the filter device includes a card plate, a waste trough, a filter cloth, a movable head plate and a locking and telescopic device, the card plate includes a plurality of tooth-shaped plates arranged opposite to each other and vertically arranged, the filter cloth is arranged between two of the tooth-shaped plates, the waste trough is arranged at the lower part of the card plate for receiving slag, the movable head plate is slidably arranged on a fixed column, the fixed column is perpendicular to the card plate, the locking and telescopic device is arranged on the fixed column and can abut against the movable head plate, the movable head plate can be squeezed or relaxed by the expansion and contraction of the locking and telescopic device, when the movable head plate is squeezed, two adjacent tooth-shaped plates are close to each other, the filter cloth plays a filtering role, the filtered waste residue is stored in the groove of the tooth-shaped plate, the filtrate is discharged from the filter device through the drain port, and when the movable head plate is relaxed, the two adjacent tooth-shaped plates are separated, and the waste residue falls into the waste trough.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The primary reaction chamber of the present invention is provided with a stock liquid inlet, a waste gas outlet and a primary outlet, and the interior of the primary reaction chamber is provided with an injection device, the stock liquid inlet is arranged on the side of the primary reaction chamber for passing the raw material liquid, the injection device is used to inject the reactant, the waste gas outlet is arranged on the upper part of the primary reaction chamber for the gas generated by the reaction to be discharged, and the primary outlet is used for the solution to flow out after the reaction, and the ultrasonic enhancement device is connected to the primary reaction chamber to create a reaction environment in which the chemical reaction in the primary reaction chamber can be carried out. The injection device can inject the reactant into the raw material liquid at a certain speed and pressure, so that the reactant can be more evenly dispersed when entering the raw material liquid, and the contact area with the raw material liquid when entering the raw material liquid is larger, and the ultrasonic enhancement device is set to create a reaction environment suitable for the chemical reaction in the primary reaction chamber, and the ultrasonic enhancement can accelerate the rate of the chemical reaction and improve the conversion rate of the reaction. At the same time, it may also cause some reactions that are difficult to carry out under conventional conditions, expand the possibility of the reaction, and the injection device and the ultrasonic enhancement device work together to enable the primary reaction chamber to efficiently carry out chemical reactions, realize the rapid conversion of the raw material liquid, and can timely discharge the waste gas and output the solution after the reaction, improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of a device for removing organic matter in a solution in some embodiments of the present invention;

[0022] Figure 2 Schematic diagram of a control panel of a device for removing organic matter from a solution in some embodiments of the present invention.

[0023] In the figure: 1-inlet pipe, 2-motor, 3-centrifugal pump, 4-ventilation pipe, 5-jet vacuum pump, 6-tail pipe, 7-spiral blade device, 8-ultrasonic probe, 9-amplifier, 10-ultrasonic cavity, 11-vibrator, 12-insulation layer, 13-housing, 14-conveyor belt surface, 15-primary reaction chamber, 16-rotating shaft motor, 17-filter plate, 18-waste residue storage chamber, 19-scraper, 20-scraper shaft, 21-filtrate outlet, 22-raw liquid inlet, 23-rotating shaft, 24-liquid discharge port, 25-volume sensor, 26-waste gas outlet, 27-waste gas collection chamber, 28-activated carbon filter, 29-water pump, 30-solution inlet, 31-secondary reaction chamber, 32-stirring motor, 33-stirring shaft, 34-stirring paddle, 35-filter aid inlet pipe, 36-check valve, 37-throttle valve, 38-gas inlet and outlet, 39-locking telescopic device, 40-moving head plate, 41-filter cloth, 42-card plate, 43-waste trough, 44-pallet frame, 45-control panel, 46-first temperature display instrument, 47-power display instrument, 48-flow display instrument, 49-second temperature display instrument, 50-filtration rate display instrument, 51-first rotation speed display instrument, 52-second rotation speed display instrument, 53-ultrasonic strengthening device switch, 54-ultrasonic strengthening device indicator light, 55-frequency adjustment knob, 56-injection device switch, 57-injection device indicator light, 58-first gas control button, 59-first liquid control button, 60-filter pressure switch, 61-filter pressure indicator light, 62-second gas control button, 63-second liquid control button, 64-locking telescopic device button, 65-slag removal device switch, 66-slag removal device indicator light, 67-first rotation speed adjustment knob, 68-stirring device switch, 69-stirring device indicator light, 70-second rotation speed adjustment knob, 71-transport shaft, 72-conveyor belt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a device for removing organic matter in a solution to solve the problems existing in the prior art, and the device can quickly and efficiently treat the organic matter in the solution with good treatment effect.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-Figure 2 As shown, the present invention provides an organic matter removal device in a solution, comprising a primary reaction chamber 15 and an ultrasonic enhancement device. The primary reaction chamber 15 is provided with a raw liquid inlet 22, a waste gas outlet 26 and a primary outlet. The interior of the primary reaction chamber 15 is provided with an injection device. The raw liquid inlet 22 is arranged at the side of the primary reaction chamber 15 for introducing raw liquid, the injection device is used to inject reactants, and the waste gas outlet 26 is arranged at the upper part of the primary reaction chamber 15 for discharging gas generated by the reaction. The raw liquid inlet 22 is arranged at the side, which is convenient for the stable introduction of raw liquid and will not interfere with other components in the reaction chamber; the waste gas outlet 26 is located at the upper part, which can make the gas generated by the reaction rise naturally and be discharged smoothly, avoiding the accumulation of gas in the reaction chamber and affecting the reaction process. The waste gas enters the waste gas collection chamber 27 after passing through the waste gas outlet 26, and is discharged after passing through the activated carbon filter 28. The primary outlet is used for the solution to flow out after the reaction. The ultrasonic enhancement device is connected to the primary reaction chamber 15 to create a reaction environment in which the chemical reaction in the primary reaction chamber 15 can be carried out. The injection device can inject the reactant into the raw material liquid at a certain speed and pressure, so that the reactant can be dispersed more evenly when entering the raw material liquid, and the contact area with the raw material liquid is larger when entering the raw material liquid. The connection of the ultrasonic enhancement device creates a reaction environment suitable for the chemical reaction for the primary reaction chamber 15. Ultrasonic enhancement can accelerate the rate of chemical reactions and improve the conversion rate of reactions. It may also trigger some reactions that are difficult to carry out under conventional conditions, expanding the possibility of reactions. The injection device and the ultrasonic enhancement device work together to enable the primary reaction chamber 15 to efficiently carry out chemical reactions, achieve rapid conversion of the raw material liquid, and be able to discharge waste gas and output the post-reaction solution in time, thereby improving production efficiency and product quality.

[0028] It should be noted that there can be multiple primary reaction chambers 15 connected in sequence to ensure a more complete reaction of the raw material liquid.

[0029] In some embodiments, the ultrasonic enhancement device includes an ultrasonic transducer and a shell 13, the shell 13 is wrapped around the outside of the ultrasonic transducer, the ultrasonic transducer is arranged below the primary reaction chamber 15, and includes a vibrator 11, a transformer 9 and an ultrasonic probe 8, the ultrasonic probe 8 is arranged inside the ultrasonic cavity 10, the top of the ultrasonic probe 8 is connected to the bottom of the primary reaction chamber 15, the bottom end is connected to the top of the transformer 9, the bottom end of the transformer 9 is connected to the vibrator 11, the vibrator 11 is used to generate mechanical vibration, the transformer 9 is used to amplify the mechanical vibration and transmit it to the ultrasonic probe 8, and the ultrasonic probe 8 is used to transmit the amplified mechanical vibration to the primary reaction chamber 15.

[0030] The structural design of the ultrasonic transducer is conducive to efficiently transmitting the mechanical vibration generated by the vibrator 11 to the primary reaction chamber 15. The vibrator 11, as a vibration source, can generate stable mechanical vibrations. The presence of the horn 9 can amplify this mechanical vibration to ensure that sufficient energy is transmitted. For example, in some chemical reactions, ultrasonic energy of sufficient intensity is required to initiate or accelerate the reaction. The horn 9 is equivalent to an "energy amplifier", which enables the ultrasonic probe 8 to receive a sufficiently strong vibration signal and then transmit it to the primary reaction chamber 15, thereby providing effective energy input for the reaction. The ultrasonic probe 8 is directly connected to the bottom of the primary reaction chamber 15 to ensure that the energy can directly act on the reaction system inside the primary reaction chamber 15. The direct connection reduces the energy loss during the transmission process, so that the ultrasonic energy can be efficiently used for catalytic reactions.

[0031] In some embodiments, the device for removing organic matter in solution further includes a heat-insulating layer 12, the upper layer of the heat-insulating layer 12 is connected to the bottom surface of the primary reaction chamber 15, and the lower layer is connected to the ultrasonic probe 8. The heat-insulating layer 12 can slow down the heat exchange between the ultrasonic probe 8 and the external environment, reduce the influence of temperature changes on the performance of the ultrasonic probe 8, enable the ultrasonic probe 8 to work under relatively stable temperature conditions, and ensure the accuracy and stability of ultrasonic signal transmission and reception.

[0032] In some embodiments, the injection device includes a motor 2 and an inlet pipe 1, a centrifugal pump 3, a vent pipe 4, a jet vacuum pump 5 and a tail pipe 6 connected in sequence. The motor 2 is connected to the centrifugal pump 3, and the motor 2 is used to drive the centrifugal pump 3. The inlet pipe 1 is used for the reactant to flow in. The reactant enters the jet vacuum pump 5 after passing through the centrifugal pump 3 and the vent pipe 4. After the reactant is processed by the jet vacuum pump 5, the reactant in the form of a jet is ejected through the tail pipe 6. The motor has the characteristics of being able to accurately control the speed and the like, and can flexibly adjust the working state of the centrifugal pump 3 according to the specific reaction requirements, thereby accurately controlling the parameters such as the injection flow rate and pressure of the reactant. The high-speed jet enables the reactant to quickly penetrate the reaction liquid after entering the reaction chamber, reaching different depths and regions of the reaction system, ensuring sufficient contact between the reactant and the reaction liquid, and the reactant in the form of a jet has good dispersibility and can be evenly dispersed in the reaction liquid, avoiding problems such as side reactions that may be caused by excessively high local concentrations of the reactant, which is conducive to improving the uniformity and efficiency of the reaction.

[0033] In some embodiments, a spiral blade device 7 is also provided at the end of the tail pipe 6. The spiral blade device 7 is used to cyclone the reactant in the form of a jet, so that the reactant enters the primary reaction chamber 15 in a cyclonic manner. The reactant can generally be an oxide gas, a catalyst, or a sodium oxalate seed crystal, etc. After passing through the jet vacuum pump 5, the reactant is no longer a linear jet in a single direction when entering the primary reaction chamber, but forms a rotating airflow in a three-dimensional space. The cyclonic motion makes the distribution of the reactant in the reaction chamber more extensive and dispersed, and each tiny reactant particle has more opportunities to contact the surrounding reaction liquid during the rotation process. Taking the chemical reaction involving gas as an example, when the gas reactant enters the reaction chamber in a cyclone, the gas molecules, driven by the rotating airflow, will be more widely dispersed in all levels of the reaction liquid, and the contact area with the liquid reactant or other reactants will be greatly increased. Then, according to the principle of chemical reaction kinetics, more collision opportunities between reactant molecules are increased, which helps to increase the reaction rate.

[0034] In some embodiments, the device for removing organic matter in the solution also includes a slag removal device, which is arranged in the primary reaction chamber 15 and is used to remove waste residues produced after the reactant reacts with the raw material solution. The slag removal device includes a rotating shaft 23, a rotating shaft motor 16 and a scraper 19. The rotating shaft is arranged along the height direction of the primary reaction chamber 15. The output shaft of the rotating shaft motor 16 is connected to the first end of the rotating shaft 23 for driving the rotating shaft 23 to rotate. The second end of the rotating shaft 23 is fixedly connected to the scraper 19. The scraper 19 is arranged at the bottom of the primary reaction chamber 15 for scraping off the waste residue. The scraper 19 is preferably made of rubber or silicone and is arranged on the scraper shaft 20. The scraper shaft 20 is arranged at the bottom of the primary reaction chamber 15 and is fixedly connected to the rotating shaft. A conveyor belt 72 is arranged at the bottom of the scraper 19, and the conveyor belt surface 14 of the conveyor belt 72 is a water-permeable material. A filter plate 17 is arranged below the conveyor belt 72. The filter plate 17 is used for reflux of the liquid after the reaction. After passing through the filter plate 17, the liquid flows back to the original liquid inlet 22 through the filtrate outlet 21 to participate in the reaction. In addition, a waste residue containing chamber 18 is also arranged on the side of the rotating shaft away from the primary reaction chamber 15. The bottom of the waste residue containing chamber 18 is connected with the bottom of the primary reaction chamber 15. The scraper 19 can extend to the waste residue containing groove to scrape the waste residue into the waste residue containing chamber 18. This design makes it possible to conveniently transport the waste residue scraped by the scraper 19 to the waste residue containing chamber 18 for centralized collection. After the scraper 19 scrapes up the waste residue, the waste residue can directly enter the waste residue containing chamber 18 along the movement direction of the scraper 19, without the need for additional complex transfer procedures, simplifying the waste residue treatment process, and also facilitating the subsequent unified treatment and disposal of the waste residue. Finally, the waste residue is continuously transported back to the waste residue pile in the waste residue containing chamber 18 by the conveyor belt 72 driven by the rotating transport shaft 71 for processing and recycling, so as to avoid the accumulation of waste residue and the hindrance of equipment operation.

[0035] In some embodiments, a volume sensor 25 is also provided in the primary reaction chamber 15. The volume sensor 25 is used to sense the volume of the waste residue and transmit an electrical signal to the control system, which controls the operation of the shaft motor 16. The volume sensor 25 can accurately sense the volume of the waste residue in the primary reaction chamber 15. During the organic matter removal reaction, the amount of waste residue produced will continue to change as the reaction proceeds. The volume sensor 25 can capture these changes in real time and provide accurate waste residue volume data. After the control system receives the electrical signal from the volume sensor 25, it can control the operation of the shaft motor 16 according to the preset waste residue volume threshold. When the waste residue volume reaches or exceeds the set threshold, the control system starts the shaft motor 16 and drives the scraper 19 to perform the slag removal operation, avoiding unnecessary frequent slag removal, saving energy consumption, and also reducing unnecessary wear of the slag removal device components.

[0036] In some embodiments, the organic matter removal device in the solution further comprises a secondary reaction chamber 31, on which a solution inlet 30, a liquid discharge port 24 and a gas inlet and outlet 38 are arranged. The solution inlet 30 is connected to the primary outlet through a water pump 29, and the water pump 29 can pump the liquid in the primary reaction chamber 15 to the secondary reaction chamber 31. The liquid discharge port 24 is arranged at the bottom of the secondary reaction chamber 31, and is used to discharge the solution after treatment. The gas inlet and outlet 38 are arranged on the side of the secondary reaction chamber 31, and a throttle valve 37 is arranged at the connection to control the gas discharge speed. A stirring device and a filtering device are arranged inside the secondary reaction chamber 31. The solution after the reaction in the primary reaction chamber 15 enters the stirring device through the solution inlet 30, and the stirring device is used to stir the solution. The solution after stirring enters the filtering device, and the filtering device is used to filter the solution. The gas inlet and outlet 38 is used to introduce or discharge air into the filtering device. When introducing air, the filter cloth 41 is squeezed by the air to enhance the filtering effect. When discharging air, the filter cloth 41 is relatively loose.

[0037] The secondary reaction chamber 31 provides space for further processing of the solution after the reaction in the primary reaction chamber 15. In the primary reaction, although the organic matter has been removed to a certain extent, there may still be some residual organic matter or other impurities that need further processing. The secondary reaction chamber 31 can process the solution more finely through the synergistic effect of the stirring device and the filtering device, thereby improving the overall effect of organic matter removal and ensuring that the final discharged solution reaches a higher quality standard. The stirring device can fully mix the various components in the solution, break the possible concentration gradient, and ensure that the solution is in a uniform state before subsequent filtering treatment. The filtering device can filter the solution after stirring evenly, and effectively remove the remaining organic matter, fine particle impurities, etc. in the solution. By selecting suitable filter materials and filtering accuracy, the filtering device can specifically intercept impurities of different sizes and properties to ensure that the discharged solution is purer.

[0038] In some embodiments, the stirring device includes a stirring shaft 33, a stirring paddle 34 and a stirring motor 32. The output shaft of the stirring motor 32 is fixedly connected to one end of the stirring shaft 33, and the other end of the stirring shaft 33 is fixedly connected to the stirring paddle 34. The stirring paddle 34 is used to stir the solution. During stirring, the filter aid will sequentially pass through the filter aid inlet pipe 35 and the one-way valve 36 arranged on the side of the secondary reaction chamber 31 to enter the stirring device. The one-way valve 36 only allows the filter aid to enter the stirring device in a predetermined direction to prevent the solution from flowing back into the filter aid inlet pipe 35, thereby ensuring the unidirectionality and stability of the filter aid addition process and avoiding problems that may be caused by the backflow of the solution. The filter aid can be selected from aluminum ash active dissolution slag or lime milk, etc. The stirring paddle 34 can accelerate the secondary reaction of the filter aid and the solution. By rotating the water flow, the water flow rate of the solution inlet 30 can be buffered to ensure the reaction effect.

[0039] In some embodiments, the filtering device includes a card plate 42, a waste trough 43, a filter cloth 41, a movable head plate 40 and a locking and telescopic device 39. The card plate 42 includes a plurality of tooth-shaped plates arranged relatively to each other and is vertically arranged through a card plate frame 44. The filter cloth 41 is arranged between the two tooth-shaped plates. The waste trough 43 is arranged at the lower part of the card plate 42 for receiving slag. The movable head plate 40 is slidably arranged on a fixed column, and the fixed column is perpendicular to the card plate. The locking and telescopic device 39 is arranged on the fixed column and can abut against the movable head plate 40. The movable head plate 40 can be squeezed or relaxed by the extension and contraction of the locking and telescopic device 39. When the movable head plate 40 is squeezed, two adjacent tooth-shaped plates are close to each other, and the filter cloth 41 plays a filtering role. The filtered waste residue is stored in the groove of the tooth-shaped plate, and the filtrate is discharged from the filtering device through the drain port 24. When the movable head plate 40 is relaxed, the two adjacent tooth-shaped plates are separated, and the waste residue falls into the waste trough 43.

[0040] The filter cloth 41 is arranged between two tooth-shaped plates. When the movable head plate 40 is squeezed, the adjacent tooth-shaped plates are close to each other, so that the filter cloth 41 is in a tensioned state, and the solution can be effectively filtered. The filter cloth 41 can select a suitable material and aperture as needed, so as to accurately intercept impurities such as waste residues and organic particles in the solution, and ensure that the filtrate can be discharged from the filter device more purely. The method of squeezing the filter cloth 41 to work can ensure the reliability and stability of the filtration, and can meet the filtration requirements of solutions with different properties and impurity contents.

[0041] By squeezing or relaxing the moving head plate 40 through the expansion and contraction of the locking and telescopic device 39, the distance between adjacent tooth-shaped plates can be flexibly controlled, thereby changing the pressure on the filter cloth 41. When more precise filtering is required, the expansion and contraction force of the locking and telescopic device 39 can be increased to make the tooth-shaped plates squeeze the filter cloth 41 more tightly, thereby improving the filter cloth 41's ability to intercept impurities; and when the filtering accuracy is not required but the filtering flux is expected to be improved, the moving head plate 40 can be appropriately relaxed to make the distance between the tooth-shaped plates slightly larger, so that the solution can pass through the filter cloth 41 more smoothly, thereby achieving the purpose of flexibly adjusting the filtering degree and flux according to actual needs. Moreover, during the filtering process, the waste residue intercepted by the filter cloth 41 will be stored in the groove of the tooth-shaped plate. When the filtration is completed, the movable head plate 40 is relaxed, and the adjacent tooth-shaped plates move away, and the waste residue will fall into the waste trough 43, which can realize the integrated process of filtration and waste residue collection without the need for additional complicated waste residue transfer operations. It can not only improve work efficiency, but also ensure that the waste residue is collected and processed in a centralized manner, which is convenient for the subsequent management of the waste residue.

[0042] The following are the specific experimental results:

[0043] Effect of no device treatment:

[0044] In this study, sodium aluminate solution (decomposition mother liquor: i.e., mother liquor after decomposition of aluminum hydroxide) was used. Table 1 is a composition table of sodium aluminate solution. It can be seen that its original TOC content is 6.95 g / L and its original oxalate content is 1.24 g / L.

[0045] Table 1 Composition of sodium aluminate solution

[0046] project <![CDATA[N T ]]> <![CDATA[N C ]]> <![CDATA[N K ]]> <![CDATA[Al2O3]]> TOC <![CDATA[C 草酸根 ]]> Concentration (g / L) 179.60 12.20 167.40 102.07 6.95 1.24

[0047] Note: αk=2.70, NC / NT=6.79.

[0048] The effect of ultrasonic enhancement device assisted removal:

[0049] With the reaction temperature fixed at 55°C, the effect of different ultrasonic powers on the removal of organic matter in sodium aluminate solution was first studied, as shown in Figure 2. It was found that with the increase of ultrasonic power, the content of organic matter in the sodium aluminate solution showed a gradual decreasing trend.

[0050] Table 2 Relationship between ultrasonic power and organic matter removal

[0051] Power, KW 0 8 18 24 36 TOC, g / L 6.46 3.76 3.52 3.35 3.16 Sodium oxalate, g / L 1.24 0.69 0.56 0.48 0.41

[0052] When the ultrasonic power is 0KW, the concentrations of TOC and sodium oxalate in the sodium aluminate solution change slightly. After the addition of ultrasound, the cavitation effect rapidly accelerates the reaction process, and then the change tends to be gentle. The TOC concentration drops from the original 6.95g / L to 3.16g / L, and the sodium oxalate concentration drops from 1.24g / L before crystallization to 0.41g / L after crystallization.

[0053] Effect of jet device assisted degradation:

[0054] When the reaction temperature is fixed at 55°C and the ultrasonic power is 0KW, the effect of different jet flow rates on the degradation of organic matter in the sodium aluminate solution is studied, as shown in Figure 3. It is found that with the increase of the jet flow rate, the content of organic matter in the sodium aluminate solution shows a gradual decreasing trend.

[0055] Table 3 Relationship between jet flow rate and organic matter removal

[0056] <![CDATA[Flow rate, m 3 / h]]> 0 22000 23000 24000 25000 TOC, g / L 6.46 4.22 4.03 3.87 3.76 Sodium oxalate, g / L 1.24 0.75 0.64 0.58 0.52

[0057] When the jet flow rate is 0m 3 / h, the concentrations of TOC and sodium oxalate are the same as when the ultrasonic power is 0KW. With the increase of flow rate, the concentrations of TOC and sodium oxalate in the sodium aluminate solution gradually decreased, with the TOC concentration decreasing from the original 6.95g / L to 3.76g / L, and the sodium oxalate concentration decreasing from the original 0.69g / L to 0.52g / L.

[0058] Effects of the combined ultrasonic enhancement device and jet device:

[0059] When the reaction temperature is fixed at 55°C and the ultrasonic power is 8KW, the effect of different jet flow rates on the removal of organic matter in the sodium aluminate solution is studied, as shown in Figure 4. It is found that with the increase of the jet flow rate, the organic matter in the sodium aluminate solution shows a gradual decreasing trend.

[0060] Table 4 Relationship between jet flow rate and organic matter removal

[0061] <![CDATA[Flow rate, m 3 / h]]> 0 22000 23000 24000 25000 TOC, g / L 3.76 3.32 3.01 2.72 1.69 Sodium oxalate, g / L 0.69 0.45 0.42 0.4 0.13

[0062] When the jet flow rate is 0m 3 / h, the concentrations of TOC and sodium oxalate are the same as when the ultrasonic power is 8KW. With the increase of flow rate, the concentrations of TOC and sodium oxalate in the sodium aluminate solution gradually decreased, with the TOC concentration decreasing from the original 3.76g / L to 1.69g / L, and the sodium oxalate concentration decreasing from the original 0.69g / L to 0.13g / L.

[0063] like Figure 2As shown, the control panel 45 of the device for removing organic matter in the solution includes a first temperature display instrument 46, a power display instrument 47, a flow display instrument 48, a second temperature display instrument 49, a filtration rate display instrument 50, a first rotation speed display instrument 51, and a second rotation speed display instrument 52. The power display instrument 47 is arranged above the first temperature display instrument 46. The power display instrument 47 is used to display the power of the ultrasonic enhancement device, which is generally controlled to be 36KW. The first temperature display instrument 46 is used to display the ultrasonic temperature of the ultrasonic enhancement device, which is generally controlled to be 50-100°C. The second temperature display instrument 49 is arranged on the right side of the power display instrument 47, and is used to display the temperature of the jet reactant sprayed by the spray device, which is generally controlled to be 30-50°C. The flow display instrument 48 is arranged on the lower side of the second temperature display instrument 49, and is used to display the injection volume of the jet sprayed by the spray device, which is generally controlled to be 22000-25000m 3 / h, the filtration rate display meter 50 is arranged on the right side of the second temperature display meter 49, and is used to display the filtration rate of the filtration device, which is generally set to 60kg / h. The first speed display meter 51 and the second speed display meter 52 are arranged side by side below the filtration rate display meter 50. The first speed display meter 51 is used to display the speed of the scraper, and the scraper is set to rotate clockwise at a speed of 30 to 60r / min. The second speed display meter 52 is used to display the speed of the stirring paddle, and the stirring paddle is set to rotate clockwise at a speed of 60 to 120r / min.

[0064] The control panel 45 is also provided with an ultrasonic strengthening device switch 53, an ultrasonic strengthening device frequency adjustment knob 55, an injection device switch 56, a filter press switch 60, a slag removal device switch 65, a first speed adjustment knob 67, a stirring device switch 68 and a second speed adjustment knob 70, which are arranged in sequence from left to right in the upper row. The ultrasonic strengthening device switch 53 is used to control the opening and closing of the ultrasonic strengthening device, the ultrasonic strengthening device frequency adjustment knob 55 is used to adjust the operating frequency of the ultrasonic strengthening device, the injection device switch 56 is used to control the opening and closing of the injection device, the filter press switch 60 is used to control the opening and closing of the locking and telescopic device, the slag removal device switch 65 is used to control the opening and closing of the slag removal device, and the first speed adjustment knob 67 is used to adjust the scraping speed. The rotation speed of the plate is that of the shaft motor. The stirring device switch 68 is used to control the opening and closing of the stirring device. The second speed adjustment knob 70 is used to adjust the rotation speed of the stirring paddle, that is, the rotation speed of the stirring motor. The lower row is arranged from left to right in sequence: the ultrasonic strengthening device indicator light 54, the injection device indicator light 57, the filter press indicator light 61, the slag removal device indicator light 66 and the stirring device indicator light 69. The ultrasonic strengthening device indicator light 54 is used to display the operating status of the ultrasonic strengthening device, the injection device indicator light 57 is used to display the operating status of the injection device, the filter press indicator light 61 is used to display the operating status of the locking and telescopic device, the slag removal device indicator light 66 is used to display the operating status of the slag removal device, and the stirring device indicator light 69 is used to display the operating status of the stirring device.

[0065] A first gas control button 58 and a first liquid control button 59 are sequentially arranged between the injection device switch 56 and the filter press switch 60 from top to bottom. The first gas control button 58 is used to control the injection device to inject gaseous reactants, and the first liquid control button 59 is used to control the injection device to inject liquid reactants. A second gas control button 62, a second liquid control button 63 and a locking and retracting device button 64 are sequentially arranged between the filter press switch 60 and the slag removal device switch 65 from top to bottom. The second gas control button 62 is used to control the air inlet and outlet 38 to enter and exhaust air. When air is introduced, the filter cloth is squeezed by the gas to enhance the filtering effect. When air is exhausted, the filter cloth is relatively loose. The second liquid control button 63 is used to control whether the filter aid can enter the secondary reaction chamber through the filter aid inlet pipe 35. The locking and retracting device button 64 is used to control the locking degree of the locking and retracting device.

[0066] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for removing organic matter from a solution, characterized in that: include A primary reaction chamber, wherein the primary reaction chamber is provided with a stock liquid inlet, an exhaust gas outlet and a primary outlet, and an injection device is provided inside the primary reaction chamber, wherein the stock liquid inlet is used to introduce the raw liquid, the injection device is used to inject the reactant, the exhaust gas outlet is used to discharge the gas generated by the reaction, and the primary outlet is used to allow the solution after the reaction to flow out; An ultrasonic enhancement device is connected to the primary reaction chamber and is used to create a reaction environment in which a chemical reaction can be carried out in the primary reaction chamber.

2. The device for removing organic matter from solution according to claim 1, characterized in that: The ultrasonic enhancement device includes an ultrasonic transducer and a shell, wherein the shell is wrapped around the outside of the ultrasonic transducer. The ultrasonic transducer is arranged below the primary reaction chamber and includes a vibrator, a horn and an ultrasonic probe. The top end of the ultrasonic probe is connected to the bottom end of the primary reaction chamber, and the bottom end is connected to the top end of the horn. The bottom end of the horn is connected to the vibrator. The vibrator is used to generate mechanical vibration, the horn is used to amplify the mechanical vibration and transmit it to the ultrasonic probe, and the ultrasonic probe is used to transmit the amplified mechanical vibration to the primary reaction chamber.

3. The device for removing organic matter from solution according to claim 2, characterized in that: It also includes a heat-insulating layer, wherein the upper layer of the heat-insulating layer is connected to the bottom surface of the primary reaction chamber, and the lower layer is connected to the ultrasonic probe.

4. The device for removing organic matter from solution according to claim 1, characterized in that: The injection device includes a motor and an inlet pipe, a centrifugal pump, a vent pipe, a jet vacuum pump and a tail pipe connected in sequence. The motor is connected to the centrifugal pump, and the motor is used to drive the centrifugal pump. The inlet pipe is used for reactants to flow in. The reactants pass through the centrifugal pump and the vent pipe and then enter the jet vacuum pump. After the jet vacuum pump processes the reactants, it sprays the reactants in the form of a jet through the tail pipe.

5. The device for removing organic matter from solution according to claim 4, characterized in that: A spiral blade device is also provided at the end of the tail pipe, and the spiral blade device is used to cyclone the reactant in the jet form so that the reactant enters the primary reaction chamber in a cyclonic manner.

6. The device for removing organic matter from solution according to claim 1, characterized in that: The system further comprises a slag removal device, which is arranged in the primary reaction chamber and is used for removing waste slag produced after the reactant reacts with the raw material liquid. The slag removal device comprises a rotating shaft, a rotating shaft motor and a scraper. The rotating shaft is arranged along the height direction of the primary reaction chamber. The output shaft of the rotating shaft motor is connected to the first end of the rotating shaft for driving the rotating shaft to rotate. The second end of the rotating shaft is fixedly connected to the scraper. The scraper is arranged at the bottom of the primary reaction chamber and is used for scraping off waste slag. A filter plate is arranged at the bottom of the scraper. The filter plate is used for reflux of the liquid after the reaction. A waste slag containing chamber is also arranged on the side of the rotating shaft away from the primary reaction chamber. The bottom of the waste slag containing chamber is connected to the bottom of the primary reaction chamber. The scraper can extend to the waste slag containing tank and can scrape the waste slag into the waste slag containing chamber.

7. The device for removing organic matter from solution according to claim 6, characterized in that: A volume sensor is also provided in the primary reaction chamber, and the volume sensor is used to sense the volume of the waste residue and transmit an electrical signal to a control system, and the control system controls the operation of the rotating shaft motor.

8. The device for removing organic matter from solution according to claim 1, characterized in that: It also includes a secondary reaction chamber, which is provided with a solution inlet, a liquid discharge port and a gas inlet and outlet. The solution inlet is connected to the primary outlet. The liquid discharge port is provided at the bottom of the secondary reaction chamber for discharging the solution after treatment. The gas inlet and outlet are provided at the side of the secondary reaction chamber. A stirring device and a filtering device are provided inside the secondary reaction chamber. The solution after reaction in the primary reaction chamber enters the stirring device through the solution inlet. The stirring device is used to stir the solution. The solution after stirring enters the filtering device. The filtering device is used to filter the solution. The gas inlet and outlet are used to introduce or exhaust air into or out of the filtering device.

9. The device for removing organic matter from solution according to claim 8, characterized in that: The stirring device comprises a stirring shaft, a stirring paddle and a stirring motor, wherein the output shaft of the stirring motor is fixedly connected to one end of the stirring shaft, and the other end of the stirring shaft is fixedly connected to the stirring paddle, and the stirring paddle is used to stir the solution; The secondary reaction chamber is also provided with a filter aid inlet pipe for adding filter aid, and the filter aid inlet pipe is provided with a one-way valve.

10. The device for removing organic matter from solution according to claim 8, characterized in that: The filter device comprises a card plate, a waste trough, a filter cloth, a movable head plate and a locking and telescopic device, the card plate comprises a plurality of tooth-shaped plates arranged opposite to each other, and the tooth-shaped plates are arranged vertically, the filter cloth is arranged between two of the tooth-shaped plates, the waste trough is arranged at the lower part of the card plate for receiving slag, the movable head plate is slidably arranged on a fixed column, and the fixed column is perpendicular to the card plate, the locking and telescopic device is arranged on the fixed column and can abut against the movable head plate, and the movable head plate can be squeezed or relaxed by the expansion and contraction of the locking and telescopic device, when the movable head plate is squeezed, two adjacent tooth-shaped plates are close to each other, the filter cloth plays a filtering role, and the filtered waste residue is stored in the groove of the tooth-shaped plate, and the filtrate is discharged from the filter device through the drain port, and when the movable head plate is relaxed, the two adjacent tooth-shaped plates are separated, and the waste residue falls into the waste trough.

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