Reactor for preparing multinary layered double hydroxide from steel slag

Abstract

The utility model discloses a reactor for steel slag preparation multilayer layered double hydroxide, related to reactor technical field, including reactor jar body, the lateral wall of reactor jar body is fixedly connected with a plurality of first semicircular temperature control jacket and second semicircular temperature control jacket in vertical arrangement, a first semicircular temperature control jacket and a second semicircular temperature control jacket are a pair, a plurality of second temperature sensors are fixedly connected on the reactor jar body inner wall, be provided with infusion mechanism on first semicircular temperature control jacket and second semicircular temperature control jacket, the utility model discloses a plurality of first semicircular temperature control jacket and second semicircular temperature control jacket are arranged on the lateral wall of reactor jar body, realize the temperature control of the partition of reactor jar body, through this dynamic, the accurate control of partition, the temperature in whole reactor jar body always keeps in the ideal range of setting, ensures the high efficiency, safety and high quality of product of reaction.

Description

Technical Field

[0001] This utility model relates to the field of reactor technology, specifically a reactor for preparing multi-layered double hydroxides from steel slag. Background Technology

[0002] Layered double hydroxides are a class of anionic clay materials with a layered structure. Due to their tunable layer elemental composition and interlayer anion types, they show broad application prospects in catalysis, adsorption, medicine, and functional composite materials. Using industrial solid waste steel slag as a raw material to prepare multi-component layered double hydroxides not only achieves high-value-added resource utilization of steel slag, aligning with the development requirements of a green circular economy, but also provides a feasible path for the low-cost, large-scale production of layered double hydroxides.

[0003] In the synthesis of multi-layered double hydroxides using steel slag, reaction temperature is a key factor affecting the crystallinity, phase purity, lamellar structure, and final properties of the product. Traditional reactors typically employ an integral jacket for temperature control, which suffers from low temperature control precision, slow response, and significant axial and radial temperature gradients within the reactor. This uneven temperature field easily leads to localized overheating or undercooling, resulting in impure crystal forms, uneven particle size distribution, and even side reactions, severely impacting the product quality and synthesis efficiency of the layered double hydroxides and hindering the industrial application of this technology.

[0004] To address the aforementioned issues, an improved reactor for preparing multi-layered double hydroxides from steel slag is now designed. Utility Model Content

[0005] The purpose of this invention is to provide a reactor for preparing multi-layered double hydroxides from steel slag, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A reactor for preparing multi-layered double hydroxides from steel slag includes a reactor tank. A controller is fixedly connected to the upper end of the reactor tank. Several first semi-circular temperature control jackets and second semi-circular temperature control jackets are vertically arranged and fixedly connected to the side wall of the reactor tank. Each first semi-circular temperature control jacket and each second semi-circular temperature control jacket form a pair and can be spliced ​​together to form a circle. Several second temperature sensors for detecting the reaction temperature inside the reactor tank are fixedly connected to the inner wall of the reactor tank. Each second temperature sensor corresponds one-to-one with each pair of first and second semi-circular temperature control jackets. A liquid delivery mechanism is provided on the first and second semi-circular temperature control jackets for circulating and delivering liquid medium to the first and second semi-circular temperature control jackets.

[0008] As a further embodiment of this utility model: the infusion mechanism includes a first connecting pipe and a second connecting pipe. The lower ends of the side walls at both ends of the first semi-circular temperature-controlled jacket are respectively fixedly connected to a first input pipe and a first output pipe. The lower ends of the side walls at both ends of the second semi-circular temperature-controlled jacket are respectively fixedly connected to a second input pipe and a second output pipe. The output end of the second input pipe and the input end of the first output pipe are located on the same side, and the input end of the second output pipe and the output end of the first input pipe are located on the same side, so that the flow direction of the liquid medium inside the first and second semi-circular temperature-controlled jackets is opposite. The ends of the second and first input pipes away from the reactor tank are connected to the first connecting pipe through a T-joint. The ends of the second and first output pipes away from the reactor tank are connected to the second connecting pipe through a T-joint. A first temperature sensor for measuring the temperature of the liquid medium is fixedly connected to the first connecting pipe. A delivery pump for making the liquid medium flow inside the first connecting pipe is fixedly installed on the side wall of the first connecting pipe. A heating and cooling assembly for temperature control of the liquid medium is provided on the side of the first and second connecting pipes away from the reactor tank.

[0009] As a further embodiment of this utility model: the heating and cooling assembly includes a box corresponding one-to-one with each group of first semi-circular temperature control jackets and second semi-circular temperature control jackets. Several boxes are vertically arranged and fixedly connected together. The lowest box is fixed to the ground by a cement block. A heat insulation plate is horizontally fixedly connected to the center of the box. A heater is horizontally fixedly connected to the inner wall of the box above the heat insulation plate. A cooler is horizontally fixedly connected to the inside of the box below the heat insulation plate. Both the cooler and the heater divide the inside of the box into a U-shape. A hot liquid output pipe and a hot liquid return pipe are fixedly connected to the upper and lower side walls of the housing, respectively. A cold liquid output pipe and a cold liquid return pipe are fixedly connected to the upper and lower side walls of the housing, respectively. Electrically controlled valves for controlling the switching of the pipes are fixedly installed on the hot liquid output pipe, the hot liquid return pipe, the cold liquid return pipe, and the cold liquid output pipe. The ends of the hot liquid output pipe and the cold liquid output pipe away from the housing are connected to the first connecting pipe through a T-joint. The ends of the hot liquid return pipe and the cold liquid return pipe away from the housing are connected to the second connecting pipe through a T-joint.

[0010] As a further improvement of this invention: the upper end of the reactor tank is fixedly connected to a stirrer for stirring the reactants inside the reactor tank.

[0011] As a further improvement of this utility model, a pressure relief valve for protection is fixedly connected to the side wall of the housing above the heater.

[0012] As a further embodiment of this utility model: the side walls of the second input pipe and the first output pipe are respectively fixedly connected to the side walls of the second semi-circular temperature control jacket and the first semi-circular temperature control jacket by pipe clamps.

[0013] As a further improvement of this utility model, an insulation layer for heat insulation is fixedly connected to the side wall of the box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention constructs a zoned independent temperature control system by setting several pairs of first and second semi-circular temperature control jackets on the side wall of the reactor tank. This structure, combined with a second temperature sensor correspondingly installed on the inner wall of the tank, can monitor and provide feedback on the temperature of each zone in real time. A controller then enables precise and dynamic adjustment of the circulating medium temperature within each zone jacket. This zoned collaborative temperature control method effectively eliminates temperature unevenness within the reactor, ensuring that the temperature field throughout the entire reactor tank remains stable within the set ideal range, thereby significantly improving the controllability of the reaction process.

[0016] Meanwhile, the unique piping design allows the liquid medium within the paired jackets to flow in opposite directions, further enhancing the uniformity and efficiency of heat transfer and preventing the formation of localized hot spots or cold spots. This design, combined with the top-mounted agitator, provides a highly stable and uniform reaction environment for the preparation of layered double hydroxides from steel slag and the reaction liquid.

[0017] This invention effectively ensures the efficient and safe conduct of the synthesis reaction, plays a key role in improving the crystallinity, purity and consistency of multi-layered double hydroxide products, and strongly promotes the development of high-value utilization technology for steel slag. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the left-side structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the right-side structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the heating and cooling components in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the second temperature sensor and the stirrer in this utility model.

[0022] The components are: 1. Reactor tank; 2. First semi-circular temperature control jacket; 3. Second semi-circular temperature control jacket; 4. Second input pipe; 5. First input pipe; 6. Second output pipe; 7. First output pipe; 8. First connecting pipe; 9. Second connecting pipe; 10. Box body; 11. Controller; 12. Heat insulation fixing plate; 13. Hot liquid output pipe; 14. Hot liquid return pipe; 15. First temperature sensor; 16. Cold liquid return pipe; 17. Cold liquid output pipe; 18. Refrigerator; 19. Heater; 20. Second temperature sensor; 21. Stirrer; 22. Transfer pump. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 In this embodiment of the present invention, a reactor for preparing multi-layered double hydroxides from steel slag includes a reactor tank 1. A controller 11 is fixedly connected to the upper end of the reactor tank 1. A stirrer 21 for stirring the reactants inside the reactor tank 1 is also fixedly connected to the upper end of the reactor tank 1. Several first semi-circular temperature control jackets 2 and second semi-circular temperature control jackets 3 are vertically arranged and fixedly connected on the side wall of the reactor tank 1. Each first semi-circular temperature control jacket 2 and each second semi-circular temperature control jacket 3 form a pair and can be spliced ​​into a circle. Several second temperature sensors 20 for detecting the reaction temperature inside the reactor tank 1 are fixedly connected to the inner wall of the reactor tank 1. Each second temperature sensor 20 corresponds one-to-one with each pair of first semi-circular temperature control jackets 2 and second semi-circular temperature control jackets 3. A liquid delivery mechanism for circulating liquid medium to the first semi-circular temperature control jackets 2 and second semi-circular temperature control jackets 3 is provided on the first semi-circular temperature control jackets 2 and second semi-circular temperature control jackets 3.

[0025] The infusion mechanism includes a first connecting pipe 8 and a second connecting pipe 9. A first input pipe 5 and a first output pipe 7 are fixedly connected to the lower ends of the side walls at both ends of the first semi-circular temperature-controlled jacket 2, respectively. A second input pipe 4 and a second output pipe 6 are fixedly connected to the lower ends of the side walls at both ends of the second semi-circular temperature-controlled jacket 3, respectively. The output end of the second input pipe 4 and the input end of the first output pipe 7 are located on the same side, and the input end of the second output pipe 6 and the output end of the first input pipe 5 are located on the same side, so that the flow direction of the liquid medium inside the first semi-circular temperature-controlled jacket 2 and the second semi-circular temperature-controlled jacket 3 is opposite. The ends of pipe 4 and the first input pipe 5 away from the reactor tank 1 are connected to the first connecting pipe 8 via a T-joint. The ends of the second output pipe 6 and the first output pipe 7 away from the reactor tank 1 are connected to the second connecting pipe 9 via a T-joint. A first temperature sensor 15 for measuring the temperature of the liquid medium is fixedly connected to the first connecting pipe 8. A delivery pump 22 for making the liquid medium flow inside the first connecting pipe 8 is fixedly installed on the side wall of the first connecting pipe 8. A heating and cooling assembly for temperature control of the liquid medium is provided on the side of the first connecting pipe 8 and the second connecting pipe 9 away from the reactor tank 1.

[0026] The heating and cooling assembly includes a housing 10 corresponding one-to-one with each set of first semi-circular temperature control jackets 2 and second semi-circular temperature control jackets 3. Several housings 10 are vertically arranged and fixedly connected together. The lowest housing 10 is fixed to the ground by a cement block. A heat insulation plate 12 is horizontally fixedly connected to the center of the interior of each housing 10. A heater 19 is horizontally fixedly connected to the inner wall of the housing 10 above the heat insulation plate 12. A cooler 18 is horizontally fixedly connected to the interior of the housing 10 below the heat insulation plate 12. Both the cooler 18 and the heater 19 divide the interior of the housing 10 into a U-shape. The upper end of the heater 19 and... A hot liquid output pipe 13 and a hot liquid return pipe 14 are fixedly connected to the side wall of the lower end of the housing 10, respectively. A cold liquid output pipe 17 and a cold liquid return pipe 16 are fixedly connected to the side wall of the upper and lower ends of the housing 10, respectively. An electrically controlled valve for controlling the switching of the pipes is fixedly installed on the hot liquid output pipe 13, the hot liquid return pipe 14, the cold liquid return pipe 16, and the cold liquid output pipe 17. The ends of the hot liquid output pipe 13 and the cold liquid output pipe 17 away from the housing 10 are connected to the first connecting pipe 8 through a T-joint. The ends of the hot liquid return pipe 14 and the cold liquid return pipe 16 away from the housing 10 are connected to the second connecting pipe 9 through a T-joint.

[0027] Working principle of the reactor used to prepare multi-layered double hydroxides from steel slag:

[0028] The reaction inside the reactor tank 1 is measured by the second temperature sensor 20, thereby determining whether the first semi-circular temperature control jacket 2 and the second semi-circular temperature control jacket 3 heat or cool the inside of the reactor tank 1.

[0029] During heating, heater 19 is started, hot liquid return pipe 14 and hot liquid output pipe 13 are opened, and cold liquid return pipe 16 and cold liquid output pipe 17 are closed. The liquid medium is heated by heater 19. Then, transfer pump 22 is started. Transfer pump 22 draws out the hot liquid medium around heater 19 through hot liquid output pipe 13. Then, the hot liquid medium is sequentially transferred to first connecting pipe 8, second input pipe 4 and first input pipe 5, first semi-circular temperature control jacket 2 and second semi-circular temperature control jacket 3, second output pipe 6 and first output pipe 7, second connecting pipe 9, and hot liquid return pipe 14. Then, hot liquid return pipe 14 transfers the liquid medium back into the interior of tank 10 to realize the circulation of the liquid medium. While the liquid medium is circulating, the liquid medium inside the first semi-circular temperature control jacket 2 and the second semi-circular temperature control jacket 3 heats the reactor tank 1.

[0030] During cooling, the cooler 18 is started, the cold liquid return pipe 16 and the cold liquid output pipe 17 are opened, and the hot liquid return pipe 14 and the hot liquid output pipe 13 are closed. The cooler 18 cools the liquid medium. Then, the transfer pump 22 is started. The transfer pump 22 draws out the cold liquid medium around the cooler 18 through the cold liquid output pipe 17. Then, the cold liquid medium is sequentially transferred to the first connecting pipe 8, the second input pipe 4 and the first input pipe 5, the first semi-circular temperature control jacket 2 and the second semi-circular temperature control jacket 3, the second output pipe 6 and the first output pipe 7, the second connecting pipe 9, and the cold liquid return pipe 16. Then, the cold liquid return pipe 16 transfers the liquid medium back into the interior of the tank 10 to realize the circulation of the liquid medium. While the liquid medium is circulating, the liquid medium inside the first semi-circular temperature control jacket 2 and the second semi-circular temperature control jacket 3 cools the reactor tank 1.

[0031] During the process of going from hot to cold or from cold to hot, the controller 11 needs to control the valve opening on the hot liquid output pipe 13, hot liquid return pipe 14, cold liquid return pipe 16, and cold liquid output pipe 17 to mix the hot and cold liquid media and make a slow transition, avoiding sudden heating or cooling.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A reactor for preparing multi-layered double hydroxides from steel slag, comprising a reactor tank (1), wherein a controller (11) is fixedly connected to the upper end of the reactor tank (1), characterized in that, The reactor tank (1) has several first semi-circular temperature control jackets (2) and second semi-circular temperature control jackets (3) vertically arranged and fixedly connected on its side wall. A first semi-circular temperature control jacket (2) and a second semi-circular temperature control jacket (3) are a pair and can be spliced ​​into a circle. The reactor tank (1) has several second temperature sensors (20) fixedly connected on its inner wall for detecting the reaction temperature inside the reactor tank (1). The second temperature sensors (20) correspond one-to-one with each pair of first semi-circular temperature control jackets (2) and second semi-circular temperature control jackets (3). The first semi-circular temperature control jackets (2) and second semi-circular temperature control jackets (3) are provided with a liquid delivery mechanism for circulating liquid medium to the first semi-circular temperature control jackets (2) and second semi-circular temperature control jackets (3).

2. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 1, characterized in that, The infusion mechanism includes a first connecting pipe (8) and a second connecting pipe (9). The lower ends of the side walls at both ends of the first semi-circular temperature-controlled jacket (2) are respectively fixedly connected to a first input pipe (5) and a first output pipe (7). The lower ends of the side walls at both ends of the second semi-circular temperature-controlled jacket (3) are respectively fixedly connected to a second input pipe (4) and a second output pipe (6). The output end of the second input pipe (4) and the input end of the first output pipe (7) are located on the same side. The input end of the second output pipe (6) and the output end of the first input pipe (5) are located on the same side, so that the flow direction of the liquid medium inside the first semi-circular temperature-controlled jacket (2) and the second semi-circular temperature-controlled jacket (3) is opposite. The second input pipe (8) 4) The end of the first input pipe (5) away from the reactor tank (1) is connected to the first connecting pipe (8) through a three-way connector. The ends of the second output pipe (6) and the first output pipe (7) away from the reactor tank (1) are connected to the second connecting pipe (9) through a three-way connector. A first temperature sensor (15) for measuring the temperature of the liquid medium is fixedly connected to the first connecting pipe (8). A delivery pump (22) for making the liquid medium flow inside the first connecting pipe (8) is fixedly installed on the side wall of the first connecting pipe (8). A heating and cooling assembly for controlling the temperature of the liquid medium is provided on the side of the first connecting pipe (8) and the second connecting pipe (9) away from the reactor tank (1).

3. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 2, characterized in that, The heating and cooling assembly includes a box (10) corresponding one-to-one with each group of first semi-circular temperature control jackets (2) and second semi-circular temperature control jackets (3). Several boxes (10) are vertically arranged and fixed together. The lowest box (10) is fixed to the ground by a cement block. A heat insulation plate (12) is horizontally fixed to the center of the box (10). A heater (19) is horizontally fixed to the inner wall of the box (10) above the heat insulation plate (12). A cooler (18) is horizontally fixed to the inside of the box (10) below the heat insulation plate (12). The cooler (18) and the heater (19) divide the inside of the box (10) into a U-shape. The upper and lower ends of the heater (19) A hot liquid output pipe (13) and a hot liquid return pipe (14) are fixedly connected to the side wall of the housing (10) of the refrigerator (18). A cold liquid output pipe (17) and a cold liquid return pipe (16) are fixedly connected to the side wall of the housing (10) at the upper and lower ends of the refrigerator (18). An electric valve for controlling the opening and closing of the pipeline is fixedly installed on the hot liquid output pipe (13), the hot liquid return pipe (14), the cold liquid return pipe (16), and the cold liquid output pipe (17). The end of the hot liquid output pipe (13) and the cold liquid output pipe (17) away from the housing (10) is connected to the first connecting pipe (8) through a three-way connector. The end of the hot liquid return pipe (14) and the cold liquid return pipe (16) away from the housing (10) is connected to the second connecting pipe (9) through a three-way connector.

4. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 1, characterized in that, The upper end of the reactor tank (1) is fixedly connected to a stirrer (21) for stirring the reactants inside the reactor tank (1).

5. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 3, characterized in that, A pressure relief valve for protection is fixedly connected to the side wall of the housing (10) above the heater (19).

6. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 2, characterized in that, The side walls of the second input pipe (4) and the first output pipe (7) are respectively fixedly connected to the side walls of the second semi-circular temperature control jacket (3) and the first semi-circular temperature control jacket (2) by pipe clamps.

7. The reactor for preparing multi-layered double hydroxides from steel slag according to claim 3, characterized in that, The side wall of the box (10) is fixedly connected with an insulation layer for heat insulation.

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