Full-automatic hot quenching treatment device and method for preparing load type metal nanometer material by using full-automatic hot quenching treatment device

Abstract

The invention discloses a full-automatic hot quenching treatment device which comprises a base, a calcining furnace, a drying oven, a metal solution tank, a guide rail, a ground trolley, a multi-layer porous metal basket, a crane system and a control system of the crane system, the calcining furnace and the drying oven are arranged at the two ends of the base respectively, the guide rail is longitudinally laid along the middle of the base, the left end of the guide rail extends into the calcining furnace, and the right end of the guide rail extends into the drying oven; the ground trolley slides along the guide rail and is used for bearing the multi-layer porous metal basket; the solution tank is arranged below the middle section of the base; the crane system is arranged above the middle section of the base and used for grabbing and moving the multi-layer porous metal basket; and the control system is used for controlling the operation of the ground trolley and the crane system and accurately controlling the temperature and the quenching flow in the material preparation process. The invention further discloses a method for preparing the supported metal nanomaterial by using the full-automatic hot quenching treatment device. The method comprises the following steps: preparing, calcining at high temperature, quenching, drying and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage and wastewater treatment systems, and particularly to a fully automatic heat quenching treatment device and a method for preparing supported metal nanomaterials thereof. Background Art

[0002] The components of sewage and wastewater are complex, with high concentration, high turbidity and biological toxicity, posing a serious threat to the ecological environment. As a key link in pollution control, although centralized sewage treatment plants can achieve primary wastewater treatment, under the increasingly stringent discharge standard requirements, the traditional "biochemical treatment - coagulation precipitation - disinfection" combined process is difficult to meet the demand for deep purification. Therefore, in engineering practice, advanced treatment technologies such as membrane separation, adsorption and ozone advanced oxidation are often introduced. Among them, adsorbents and oxidants are widely used in the deep treatment of sewage and wastewater. By using ceramsite, alumina, molecular sieve, etc. as carriers to load metal nanoparticles, they can be used as adsorbents to remove elements such as N, P, F, etc. in the secondary effluent of biochemical treatment, or as catalysts to catalyze H2O2 and O3 to generate strongly oxidizing free radicals to oxidize and degrade refractory organic pollutants in water. Therefore, the preparation of highly active supported nanomaterials is crucial for the deep treatment of sewage and wastewater.

[0003] In the prior art, methods for impregnating and preparing supported nanomaterials, such as Chinese Patent No. 202410471037.6 and Chinese Patent No. 202110960347.0, require multiple impregnation and calcination steps, using metal ion loading, with cumbersome operation steps and low efficiency. Although the existing quenching technologies have proposed an integrated design, such as Chinese Patent No. 202311241039.9, Chinese Patent No. 202110200622.9, Chinese Patent No. 202011524653.1, etc., which have optimized the quenching treatment process, there is currently no customized quenching treatment for supported materials, nor a complete process system for preparing supported nanomaterials by quenching treatment.

[0004] Therefore, there is an urgent need to provide a new type of fully automatic heat quenching treatment device and a method for preparing supported metal nanomaterials to solve the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fully automatic heat quenching treatment device and a method for preparing supported metal nanomaterials thereof, which can accurately control the temperature of calcination and drying and the preparation process in a fully automatic and intelligent manner, with simple operation, greatly improving the preparation efficiency of supported nanomaterials and having potential application prospects in the field of deep treatment of sewage and wastewater.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is to provide a fully automatic heat quenching treatment device, including a base, a calcination furnace, an oven, a metal solution pool, a guide rail, a ground trolley, a multi-layer porous metal basket, a crane system and its control system;

[0007] The calcination furnace and the oven are respectively arranged at both ends of the base. The guide rail is longitudinally laid in the middle of the base, with the left end extending into the interior of the calcination furnace and the right end extending into the interior of the oven; the ground trolley slides along the guide rail and is used to carry the multi-layer porous metal basket; the solution pool is arranged below the middle section of the base; the crane system is arranged above the middle section of the base, above the solution pool, and is used to grab and move the multi-layer porous metal basket;

[0008] The control system is used to control the operation of the ground trolley and the crane system, and accurately control the temperature and quenching process during the material preparation process.

[0009] In a preferred embodiment of the present invention, a horizontal remote control gate is provided above the solution pool. The horizontal remote control gate is in the same plane as the surface of the base. A drain valve and a water inlet are provided at the bottom of the solution pool to support rapid replacement of the metal solution and waste liquid recovery.

[0010] In a preferred embodiment of the present invention, the crane system includes double support arms and an electric hoist. The double support arms are installed on both sides of the solution pool, and the electric hoist is located at the intersection of the double support arms.

[0011] In a preferred embodiment of the present invention, the multi-layer porous metal basket includes a high-temperature resistant stainless steel frame and a multi-layer detachable porous metal basket. The detachable porous metal basket is detachably installed in the high-temperature resistant stainless steel frame. The top is an open loading port, and the other four sides and the bottom are porous sieves.

[0012] Further, the aperture of the porous sieve is 0.5 - 1 mm.

[0013] In a preferred embodiment of the present invention, the furnace door of the calcination furnace is movable up and down, and the temperature control range in the furnace is 300 - 1200 °C.

[0014] In a preferred embodiment of the present invention, the oven door is movable up and down, and the temperature control range in the oven is 50 - 120 °C.

[0015] In a preferred embodiment of the present invention, a deviation correction system is further installed on the base on the side of the solution pool close to the oven to correct the docking deviation of the ground trolley.

[0016] To solve the above technical problems, another technical solution adopted by the present invention is to provide a method for preparing a supported metal nanomaterial using the fully automatic heat quenching treatment device described in any one of the above, including the following steps:

[0017] S1: Preparation stage: Disassemble and layer the multi-layer porous metal basket to fill the carrier material, and place it on the platform truck.

[0018] S2: High-temperature calcination: The platform truck enters the calcination furnace along the guide rail, the furnace temperature rises to the preset temperature, and calcine for several hours.

[0019] S3: Quenching treatment: After the calcination is completed, the platform truck exits to the middle section of the base, and the crane system grabs the multi-layer porous metal basket and descends into the solution pool filled with metal solution for quenching.

[0020] S4: Drying: After the quenching is completed, the crane system lifts the multi-layer porous metal basket and places it on the platform truck located below the crane system. The platform truck enters the oven along the guide rail for drying to obtain the finished supported metal nano-material.

[0021] In a preferred embodiment of the present invention, in step S1, the carrier material includes particulate materials such as alumina, molecular sieve, ceramsite, etc., but is not limited to the above materials.

[0022] The beneficial effects of the present invention are:

[0023] (1) The full-automatic quenching treatment device of the present invention is tailored for the carrier loading process. The porous metal basket is designed as a multi-layer porous screen structure, which can ensure avoiding local overheating caused by material accumulation during the high-temperature calcination process. At the same time, it can ensure that the solution uniformly penetrates into the carrier material at the moment of quenching, quickly contacts the carrier material, and can ensure rapid drying of the material during the drying process; the screen aperture is 0.5 - 1 mm, which can ensure that most of the carrier materials will not leak out from the multi-layer porous screen and can be adapted to various types of carrier materials.

[0024] (2) The full-automatic quenching treatment device of the present invention adopts multi-module combination, which can realize full-automatic intelligent and precise control of the temperature of calcination and drying and the preparation process, ensure that each quenching process can enter the next preparation link after completion, improve the preparation efficiency of the material, and further reduce the labor cost, which is suitable for large-scale production and application of supported metal nano-materials.

[0025] (3) Compared with the impregnation-alkali precipitation-calcination method, the quenching treatment in the method of the present invention lacks the impregnation and alkali precipitation processes, significantly reducing the chemical agent cost and impregnation time of material preparation. At the same time, the supported materials prepared by quenching treatment have better dispersion, and metal nano-particles are not easy to agglomerate on the surface of the carrier, which can greatly improve the activity of the supported metal nano-materials. At the same time, the metal salt solution after quenching treatment can be reused, greatly reducing the cost of material preparation. Description of the Drawings

[0026] Figure 1It is a schematic three-dimensional structure diagram of a preferred embodiment of the full-automatic heat quenching treatment device of the present invention;

[0027] Figure 2 It is a schematic structure diagram of the multi-layer porous metal basket;

[0028] Figure 3 It is an SEM image of Ce-loaded Al2O3 prepared by the heat treatment of the present invention;

[0029] Figure 4 It is an effect diagram of Ce-loaded Al2O3 prepared by the present invention for catalytic ozonation of benzotriazole.

[0030] The labels of each component in the drawings are as follows: 1. Base, 2. Calcination furnace, 3. Oven, 4. Solution tank, 5. Guide rail, 6. Floor trolley, 7. Multi-layer porous metal basket, 71. High-temperature resistant stainless steel frame, 72. Removable porous metal basket, 73. Hole, 8. Crane system, 9. Horizontal remote control gate, 10. Deviation correction system. Detailed implementation manners

[0031] The following elaborates on the preferred embodiments of the present invention in conjunction with the drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0032] Please refer to Figure 1 , the embodiments of the present invention include:

[0033] A full-automatic heat quenching treatment device, including a base 1, a calcination furnace 2, an oven 3, a solution tank 4, a guide rail 5, a floor trolley 6, a multi-layer porous metal basket 7 ( Figure 1 not shown in

[0034] ), a crane system 8 and its control system (not shown in the figure).

[0035] Further, a lateral remote control gate 9 is provided above the solution tank 4. The lateral remote control gate 9 is in the same plane as the surface of the base 1. A drain valve and a water inlet (not shown in the figure) are provided at the bottom of the solution tank 4, which supports the rapid replacement of the metal solution and the recovery of waste liquid. The opening and closing speed of the lateral remote control gate 9 is adjustable and is remotely controlled by a remote controller.

[0036] The crane system 8 includes double support arms and an electric hoist. The double support arms are installed on both sides of the solution tank 4, and the electric hoist is located at the intersection of the double support arms.

[0037] Combined Figure 2 , the multi-layer porous metal basket 7 includes a high-temperature resistant stainless steel frame 71 and a detachable porous metal basket 72. The detachable porous metal basket 72 is detachably installed in the high-temperature resistant stainless steel frame 71. The top is an open loading port, and the other four sides and the bottom are porous sieves. The number of detachable porous metal baskets 72 is not limited, and multiple layers of detachable porous metal baskets 72 can be installed in the high-temperature resistant stainless steel frame 7l according to the amount of the catalyst. Preferably, the aperture of the holes 73 on the porous sieve is 0.5 - 1 mm. Designing the porous metal basket as a multi-layer porous sieve structure can ensure avoiding local overheating caused by material accumulation during the high-temperature calcination process. At the same time, it can ensure that the solution uniformly penetrates into the carrier material instantaneously during quenching, quickly contacts with the carrier material, and can ensure rapid drying of the material during the drying process. At the same time, designing the sieve aperture to be 0.5 - 1 mm can ensure that most carrier materials will not leak out from the multi-layer porous sieve 7 and can be adapted to various types of carrier materials. The design of the multi-layer porous metal basket 7 has the advantages of being convenient to disassemble and making the material calcination more uniform, etc. The operation is simple, which significantly improves the preparation efficiency of the supported metal nanomaterials.

[0038] In this example, the furnace door of the calcination furnace 2 is movable up and down, and the temperature control range inside the furnace is 300 - 1200 °C.

[0039] Similarly, the box door of the oven 3 is movable up and down, and the temperature control range inside the box is 50 - 120 °C.

[0040] Further, a deviation correction system 10 is also installed on the base 1 on the side of the solution tank 4 close to the oven 3, which is used to correct the docking deviation of the ground trolley 6. The lateral remote control gate 9 and the deviation correction system 10 work together, which can effectively ensure the smooth operation of the ground trolley 6 on the guide rail 5, accurately control the temperature and quenching process during the material preparation process, greatly save the material preparation cost and the manual operation cost, improve the catalyst preparation efficiency, and can realize the efficient and rapid preparation of the supported metal nanomaterials, which is applicable to the large-scale production and application of the supported metal nanomaterials.

[0041] In an example of the present invention, a method for preparing a supported metal nanomaterial using the above-mentioned fully automatic heat quenching treatment device is also provided, including the following steps:

[0042] S1: Preparation stage: Disassemble and layer-fill the carrier material in the multi-layer porous metal basket 7, and place it on the floor trolley 6;

[0043] S2: High-temperature calcination: The floor trolley 6 enters the calcination furnace 2 along the guide rail 5, the furnace temperature rises to a preset temperature, and calcination is carried out for several hours;

[0044] S3: Quenching treatment: After calcination is completed, the floor trolley 6 exits to the middle section of the base 1, and the crane system 8 grabs the multi-layer porous metal basket 7 and descends into the solution pool 4 filled with metal solution for quenching;

[0045] S4: Drying: After quenching, the crane system 8 lifts the multi-layer porous metal basket 7 and places it on the floor trolley 6 located below the crane system 8. The floor trolley 6 enters the oven 3 along the guide rail 5 for drying to obtain the finished supported metal nanomaterial.

[0046] In a specific example, using the above device and preparation method, Al2O3 is used as the carrier for quenching treatment to prepare Ce-loaded Al2O3. The initial high-temperature calcination temperature is 600 °C, the calcination time is 4 h, the quenching solution is cerium nitrate solution, and drying is carried out at 80 °C to prepare the Ce-loaded Al2O3 material, as Figure 3 shown. The Ce-loaded Al2O3 material is a spherical structure with a diameter of 3-5 mm, and has the advantages of high mechanical strength, stable chemical properties, large specific surface area, high surface activity, etc.

[0047] The Ce-loaded Al2O3 material prepared by the above quenching is used for catalytic ozonation of benzotriazole, as Figure 4 shown. The catalytic ozonation performance of the Ce-loaded Al2O3 material prepared by the quenching treatment of the present invention is much higher than that of the material prepared by the impregnation-alkali precipitation-calcination method, indicating that the quenching treatment can prepare supported metal nanomaterials with high catalytic activity.

[0048] The preparation method of the present invention can achieve precise control of the calcination and drying temperatures, automatically realize the loading and doping of metal ions, and the metal ions are evenly loaded, greatly improving the activity of the supported metal nanomaterial and saving the material preparation cost. The prepared supported nanomaterial can be used as a catalyst or adsorbent for the advanced treatment of sewage and wastewater.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0050] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic hot quenching treatment device, characterized in that, It includes a base, a calcination furnace, an oven, a metal solution pool, a guide rail, a ground trolley, a multi-layer porous metal basket, a crane system and its control system; The calcination furnace and the oven are respectively arranged at both ends of the base. The guide rail is longitudinally laid in the middle of the base, with its left end extending into the interior of the calcination furnace and its right end extending into the interior of the oven. The ground trolley slides along the guide rail and is used to carry the multi-layer porous metal basket. The solution pool is arranged below the middle section of the base. The crane system is arranged above the middle section of the base and above the solution pool, and is used to grab and move the multi-layer porous metal basket; The control system is used to control the operation of the ground trolley and the crane system, and accurately control the temperature and quenching process during the material preparation process.

2. The fully automatic hot quenching treatment device according to claim 1, characterized in that, A horizontal remote control gate is arranged above the solution pool. The horizontal remote control gate is in the same plane as the surface of the base. A liquid discharge valve and a water inlet are arranged at the bottom of the solution pool to support the rapid replacement of the metal solution and the recovery of waste liquid.

3. The fully automatic thermal quenching treatment device according to claim 1, wherein The crane system includes double support arms and an electric hoist. The double support arms are installed on both sides of the solution pool, and the electric hoist is located at the intersection of the double support arms.

4. The fully automatic hot quenching treatment device according to claim 1, characterized in that, The multi-layer porous metal basket includes a high-temperature resistant stainless steel frame and multi-layer detachable porous metal baskets. The detachable porous metal baskets are detachably installed in the high-temperature resistant stainless steel frame. The top is an open loading port, and the other four sides and the bottom are porous sieves.

5. The fully automatic thermal quenching treatment device according to claim 4, wherein, The pore diameter of the porous sieve is 0.5 - 1 mm.

6. The fully automatic hot quenching treatment device according to claim 1, wherein The furnace door of the calcination furnace is movable up and down, and the temperature control range in the furnace is 300 - 1200 °C.

7. The fully automatic hot quenching treatment device according to claim 1, characterized in that, The door of the oven is movable up and down, and the temperature control range in the oven is 50 - 120 °C.

8. The fully automatic thermal quenching treatment device according to claim 1, characterized in that, A deviation correction system is also installed on the base on the side of the solution pool close to the oven to correct the docking deviation of the ground trolley.

9. A method for preparing a supported metal nanomaterial by using the full-automatic thermal quenching treatment device according to any one of claims 1 to 8, characterized in that, It includes the following steps: S1: Preparation stage: Disassemble and layer-fill the carrier material in the multi-layer porous metal basket, and place it on the ground trolley; S2: High-temperature calcination: The ground trolley enters the calcination furnace along the guide rail, the furnace temperature rises to the pre-set temperature, and calcines for several hours; S3: Quenching treatment: After calcination is completed, the ground trolley exits to the middle section of the base, and the crane system grabs the multi-layer porous metal basket and descends into the solution pool filled with metal solution for quenching; S4: Drying: After quenching, the crane system lifts the multi-layer porous metal basket and places it on the ground trolley located below the crane system. The ground trolley enters the oven along the guide rail for drying to obtain the finished product of the supported metal nanomaterial.

10. The method for preparing the supported metal nanomaterial according to claim 9, wherein, In step S1, the carrier material includes alumina, molecular sieve, ceramsite, but is not limited to the above materials.

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