A modular reaction system for use in a laboratory

Abstract

This utility model relates to a modular reaction system for laboratory use; it includes several modular reaction units, each of which includes at least a reactor. The reactor's inlet pipe is equipped with an inlet electrically controlled valve, and its outlet pipe is equipped with an outlet electrically controlled valve. A circulation section is provided between the inlet and outlet pipes, with a semi-finished product inlet component on the circulation section and a semi-finished product outlet component on the outlet pipe. The semi-finished product outlet component in one modular reaction unit is connected to the semi-finished product inlet component in the next modular reaction unit. This system features the advantages of eliminating the need to purchase two sets of reaction equipment, relatively low cost, small footprint, flexible combination and use, effectively shortening the reaction cycle, and improving equipment uptime.

Description

Technical Field

[0001] This utility model belongs to the field of experimental equipment technology, specifically a modular reaction system for use in a laboratory. Background Technology

[0002] The laboratory small-scale pilot production stage (also known as the pilot-scale stage) mainly involves a comprehensive and systematic reform of the existing synthetic routes and methods. Based on this reform, data is accumulated through batch synthesis in the laboratory, and a synthetic process route that is basically suitable for pilot-scale production is proposed. The research focus of the pilot-scale stage should be closely focused on the key issues affecting industrial production, such as shortening the synthetic route, increasing the yield, simplifying operations, reducing costs, and ensuring safe production. The pilot-scale stage is generally characterized by small raw material usage and precise control of reaction temperature and time. After the initial pilot-scale stage is completed, scale-up or intermediate-scale tests are required. This stage is not simply a scaling up of the pilot-scale test. The processes of stirring, heat transfer, concentration, filtration, and drying are different from those in the pilot-scale test. At the same time, the amount of raw materials is relatively large, and the control of experimental conditions is relatively less precise. Furthermore, the experimenters cannot determine whether the reaction is continuous or batch. Based on this, the traditional approach requires both reaction modes to be conducted. In addition, the above-mentioned tests requiring two reaction modes require the purchase of two sets of reaction equipment (series reaction equipment and parallel reaction equipment), which has the disadvantages of high investment costs, large footprint, long reaction cycle, and low equipment uptime. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a modular reaction system for use in the laboratory to solve the technical problems existing in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A modular reaction system for use in a laboratory includes several modular reaction units, each including at least a reactor. The reactor has an inlet electrically controlled valve on its inlet pipe and an outlet electrically controlled valve on its outlet pipe. A circulation section is provided between the inlet and outlet pipes, with a semi-finished product inlet on the circulation section and a semi-finished product outlet on the outlet pipe. The semi-finished product outlet in one modular reaction unit is connected to the semi-finished product inlet in the next modular reaction unit.

[0006] The beneficial effects of this utility model are as follows: The modular reaction unit is designed based on a reactor. It can function as an independent reaction unit and achieve internal circulation reaction through a circulation section. On this basis, it can meet the needs of small-scale or pilot-scale testing. Specifically, when the inlets of multiple modular reaction units are connected to the raw material storage tank and the outlets of multiple modular reaction units are connected to the finished product storage tank, they can be connected in parallel. When the semi-finished product outlet of the previous modular reaction unit is connected to the semi-finished product inlet of the next modular reaction unit, and the inlet of the front modular reaction unit is connected to the raw material storage tank and the outlet of the end modular reaction unit is connected to the finished product storage tank, they can be connected in series. At the same time, the modular reaction unit itself can also be used independently according to the reaction needs. It has the characteristics of not needing to purchase two sets of reaction equipment, relatively low cost, small footprint, flexible combination and use, effectively shortening the reaction cycle and improving equipment uptime.

[0007] Preferably, the outlet pipe between the reactor outlet and the outlet solenoid valve is provided with a semi-finished product outlet component, a first solenoid valve, and a circulation section in sequence.

[0008] Preferably, the semi-finished product export component includes a first tee, the third end of which is connected to a first pipe quick-connect fitting via a second electrically controlled valve.

[0009] Preferably, the circulation section includes a second tee valve disposed on the outlet pipe, the third end of the second tee valve being connected to the inlet of the circulation pump via a third solenoid valve, and the outlet fourth solenoid valve and the semi-finished product inlet of the circulation pump being connected to the third end of the third tee valve; the third tee valve is disposed on the inlet pipe between the inlet solenoid valve and the reactor inlet.

[0010] Preferably, the imported semi-finished product includes a fourth tee disposed between the fourth solenoid valve and the third tee, the third end of which is connected to the second pipe quick-connect fitting via the fifth solenoid valve.

[0011] Preferably, a flow meter is also installed on the inlet pipe between the third tee and the reactor inlet.

[0012] This utility model also includes a raw material storage tank and a finished product storage tank. The raw material storage tank is connected to the inlet electrically controlled valves of several modular reaction units through raw material pipelines, and the outlet electrically controlled valves of several modular reaction units are connected to the finished product storage tank through their respective discharge pipelines.

[0013] Preferably, when the modular reaction units are connected in parallel, the outlet electrically controlled valves of the modular reaction units are connected to the corresponding finished product storage tanks through their respective discharge pipes.

[0014] This utility model also includes a shell disposed outside the modular reaction unit. Pipe holes are respectively opened around the shell. The pipe holes include pipe holes for inserting raw material pipes, pipe holes for inserting discharge pipes, pipe holes for inserting semi-finished product inlet components, and pipe holes for inserting semi-finished product outlet components.

[0015] Preferably, the upper part of the housing is provided with an observation hole for observing the flow meter.

[0016] This utility model has the following advantages:

[0017] 1. This utility model is designed based on a reactor. It can be used as a standalone reaction device and can be combined according to experimental needs to combine multiple modular reaction units into a series or parallel test device, thereby achieving the advantages of reducing investment costs, reducing floor space, convenient combination, effectively shortening the reaction cycle and improving equipment uptime.

[0018] 2. This utility model, by setting up a quick-connect pipe fitting, enables rapid connection when multiple modular reaction units are connected in series.

[0019] 3. This utility model can accurately detect the feed rate by setting a flow meter, and adjust the feed rate in a timely manner to the state required by the experiment, so as to provide a precise and reliable experimental data basis for subsequent scale-up experiments; at the same time, for experiments with solid reactants or solid catalysts, it can find the minimum flow rate that can drive the solid to flow uniformly, and then find the Reynolds coefficient that is most suitable for the reaction, so as to provide a data basis for subsequent scale-up and industrialization.

[0020] 4. In this utility model, the modular reaction unit can be set inside the shell to facilitate the protection of the internal equipment of the modular reaction unit, as well as its easy storage and combination. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the modular reaction unit of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model.

[0024] Figure 3 This is another structural schematic diagram of the present invention.

[0025] Figure 4 This is a front view of the housing of this utility model.

[0026] Figure 5 This is a top view of the casing of this utility model.

[0027] In the diagram: 1. Reactor; 2. Inlet solenoid valve; 3. Outlet solenoid valve; 4. First solenoid valve; 5. Second solenoid valve; 6. Third solenoid valve; 7. Fourth solenoid valve; 8. Fifth solenoid valve; 9. Flow meter; 10. Raw material storage tank; 11. Finished product storage tank; 12. Circulation pump; 13. Shell; 14. Pipe hole; 15. Observation hole; 16. First tee; 17. Second tee; 18. Third tee; 19. Fourth tee; 20. First quick-connect pipe fitting; 21. Second quick-connect pipe fitting. Detailed Implementation

[0028] 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 scope of protection of the present utility model.

[0029] The following is in conjunction with the appendix Figure 1-5To further describe this application in detail, this utility model is a modular reaction system for use in a laboratory. The reaction system includes several modular reaction units, each of which includes at least a reactor 1. The inlet pipe of reactor 1 is equipped with an inlet electrically controlled valve 2, and the outlet pipe of reactor 1 is equipped with an outlet electrically controlled valve 3. A circulation section is provided between the inlet pipe and the outlet pipe of reactor 1. The circulation section is equipped with a semi-finished product inlet and the outlet pipe is equipped with a semi-finished product outlet. The semi-finished product outlet in the previous modular reaction unit is connected to the semi-finished product inlet in the next modular reaction unit. This utility model is applied to small-scale or pilot-scale tests. In actual use, the semi-finished product inlet and outlet are always connected to facilitate the quick switching between series and parallel states between several modular reaction units. In actual use, this utility model can be used to explore reaction time in order to select the optimal reaction conditions. For example, when several modular reaction units are in series, the reaction time can be controlled by controlling the number of series units. Specifically, in the process of tetramethyl carbonate in the laboratory, according to its reaction characteristics, a tubular reactor is required. However, the reaction time after the experimental scale-up is uncertain. Using the multi-unit series continuous mode, the optimal reaction time can be found by sequentially increasing the reaction modular reaction units, providing reference value for the later pilot-scale test. This mode can also be continued to the pilot-scale test. At the same time, in actual use, the multi-unit parallel connection can achieve the following two different working conditions: (1) Reactions with faster reaction rates: When dealing with reactions with faster reaction rates, the circulation section is no longer opened in each modular reaction unit, that is: equivalent to dividing the modular reaction unit into several small reaction units. The reaction section can save reaction time and improve equipment utilization. For example, when conducting oxalamide synthesis experiments in the laboratory, ammonia and dimethyl oxalate are used for reaction. The reaction rate is very fast and it does not need to stay in the container for a long time. Through the above mode, the output per unit production time can be greatly increased, and experimental basis can be provided for exploring reaction time. (2) Reaction with a slow reaction rate: When dealing with a reaction with a slow reaction rate, a batch reactor or increasing the length of the pipeline is usually used. However, for laboratory small-scale or small-scale scale-up, it is not possible to customize for individual experiments (the cost is too high and the equipment utilization rate is too low). At this time, the circulation section can be opened to meet the experimental requirements and solve the problem of low equipment utilization rate and equipment occupation. At the same time, in this operating mode, it is more beneficial to use in laboratory small-scale equipment and pilot-scale equipment. By setting the power or speed of the circulation pump in each small unit, the flow rate of the material in it can be adjusted to adjust the Reynolds coefficient in the entire pipeline, find the most suitable flow rate for intermolecular reaction, and find the minimum flow rate of the reaction with solid particulate reactants or solid catalysts so that the solid does not sink and can flow with the liquid.For example, in the laboratory preparation of acetone hydrazone, a single-reactor operation using a glass apparatus can be used for small-scale laboratory tests. However, in the scale-up and pilot-scale stages, the long reaction time makes tubular reactors unsuitable due to excessive tube length, while batch reactors suffer from long, discontinuous, and cumbersome reaction times. The aforementioned method effectively solves these technical problems. Furthermore, the modular reaction unit described in this invention can also be used independently as a small experimental device, suitable for conducting multiple small-scale experiments simultaneously in the laboratory and exploring optimal conditions for individual experiments. It offers advantages such as reduced equipment footprint and faster development of laboratory-scale products. This invention enables rapid conversion between continuous and batch reactions, reducing investment costs in equipment purchase and space requirements, as well as the time cost of custom equipment, and enhancing the selectivity of producible products.

[0030] Furthermore, a semi-finished product outlet component, a first solenoid valve 4, and a circulation section are sequentially installed on the outlet pipe between the outlet of reactor 1 and the outlet solenoid valve 3. This arrangement allows for the rapid entry of post-reaction materials from reactor 1 into the next modular reaction unit via the cooperation of the semi-finished product outlet component and the first solenoid valve 4 when the reactor is connected in series. Simultaneously, depending on specific experimental conditions, the material can be selected to enter the circulation section or be discharged via the outlet solenoid valve 3, thus achieving convenient control.

[0031] Furthermore, the semi-finished product outlet component includes a first tee 16, the third end of which is connected to a first pipe quick-connect fitting 20 via a second electrically controlled valve 5. The first pipe quick-connect fitting 20 facilitates connection, while the second electrically controlled valve 5 facilitates series-parallel switching.

[0032] Furthermore, the circulation section includes a second three-way valve 17 disposed on the outlet pipe. The third end of the second three-way valve 17 is connected to the inlet of the circulation pump 12 via a third solenoid valve 6. The outlet of the circulation pump 12 is connected to the third end of the third three-way valve 18 via a fourth solenoid valve 7 and a semi-finished product inlet. The third three-way valve 18 is disposed on the inlet pipe between the inlet solenoid valve 2 and the inlet of the reactor 1. The circulation section described in this invention facilitates the circulation of materials exiting the reactor 1. By distributing the semi-finished product inlet between the fourth solenoid valve 7 and the third three-way valve 18, the material reacted in the previous modular reaction unit can quickly enter the reactor 1.

[0033] Furthermore, the semi-finished product import component includes a fourth tee 19 disposed between the fourth solenoid valve 7 and the third tee 18, the third end of which is connected to the second quick-connect pipe joint 21 via the fifth solenoid valve 8. The second quick-connect pipe joint 21 described in this invention cooperates with the aforementioned first quick-connect pipe joint 20 to achieve rapid connection; that is, regardless of whether the entire system is in series or parallel configuration, the second quick-connect pipe joint 21 and the first quick-connect pipe joint 20 are always connected together to ensure rapid switching between continuous and intermittent reactions via the fifth solenoid valve 8 and the second solenoid valve 5.

[0034] Furthermore, a flow meter 9 is also installed on the inlet pipe between the third tee 18 and the reactor 1 inlet. The flow meter 9 described in this invention can accurately monitor the overall feed rate and adjust the feed rate in a timely manner to the experimental requirements, providing a precise and reliable experimental data basis for subsequent scale-up experiments. When the entire system is in parallel, each flow meter 9 can individually measure the flow rate of each unit during internal circulation. For experiments with solid reactants or solid catalysts, it can find the lowest flow rate that can drive the solid to flow uniformly, and thus find the Reynolds coefficient most suitable for the reaction, providing a data basis for subsequent scale-up and industrialization. When the entire system is in series, the upstream flow meter 9 can be compared with the downstream flow meters 9 to monitor whether leakage occurs in the modular reaction unit, thereby improving experimental safety.

[0035] Furthermore, this utility model also includes a raw material storage tank 10 and a finished product storage tank 11. The raw material storage tank 10 is connected to the inlet electrically controlled valves 2 of several modular reaction units via raw material pipelines, and the outlet electrically controlled valves 3 of several modular reaction units are connected to the finished product storage tank 11 via their respective discharge pipelines. This arrangement allows the raw material storage tank 10 and the finished product storage tank 11 to be connected to several modular reaction units, facilitating subsequent process testing.

[0036] Furthermore, when the modular reaction units are connected in parallel, the outlet electrically controlled valves 3 of each modular reaction unit are connected to their respective finished product storage tanks 11 via their respective discharge pipes. This connection method can be used when the entire system is in parallel and it is necessary to observe the relationship between reaction time and product quality. This avoids the technical problem of simultaneously mixing products from multiple modular reaction units in the same finished product storage tank 11, which would prevent accurate monitoring of the reaction effect of each reactor 1.

[0037] Furthermore, this utility model also includes a shell 13 disposed outside the modular reaction unit. Pipe holes 14 are respectively formed around the perimeter of the shell 13. These pipe holes 14 include holes for inserting raw material pipes, holes for inserting discharge pipes, holes for inserting semi-finished product inlets, and holes for inserting semi-finished product outlets. This arrangement protects the components inside the modular reaction unit and facilitates storage and connection. The shell in this utility model can be a conventional structure such as a cylinder, cuboid, or cube, preferably a cuboid. One side of each of its two corresponding faces has a hole for inserting raw material pipes, and the other side has a hole for inserting discharge pipes. Additionally, one side of each of its two corresponding faces has a hole for inserting semi-finished product inlets, and the other side has a hole for inserting semi-finished product outlets. This arrangement facilitates connection and prevents misconnection.

[0038] Furthermore, the upper part of the housing 13 is provided with an observation hole 15 for observing the flow meter. By providing the observation hole 15, the flow rate can be easily observed.

[0039] The specific working process of this utility model is as follows: The modular reaction unit in this utility model can be used alone or in combination with several modular reaction units. When used alone, the raw material storage tank 10 is connected to the inlet solenoid valve 2 through the raw material pipeline, and the outlet solenoid valve 3 is connected to the finished product storage tank 11, so that the raw material in the raw material storage tank 10 enters the reactor 1 for reaction. The reacted material can be circulated through the circulation section, and the circulated material enters the finished product storage tank 11 through the outlet solenoid valve 3; or the reacted material directly enters the finished product storage tank 11 through the outlet solenoid valve 3. When several modular reaction units are combined for use, the raw material storage tank 10 is connected to the inlet solenoid valve 2 of several modular reaction units through the raw material pipeline. The control valve 2 is connected, and the outlet solenoid valves 3 of several modular reaction units are respectively connected to the finished product storage tank 11 via their discharge pipes. The semi-finished product outlet of the previous modular reaction unit is connected to the semi-finished product inlet of the next modular reaction unit. The connector between the semi-finished product outlet and inlet can be a conventional pipe connector or a quick-connect pipe fitting. The above connections allow for rapid conversion between parallel and series connections during the experiment. After the above is completed, if the present invention is in a parallel state, the fifth solenoid valve 8 and the second solenoid valve 5 in the modular reaction unit are closed. The circulation section can be opened for reaction according to the actual experimental requirements (the opening of the circulation section can be before or during the experiment). If the present invention is in a series state, the inlet solenoid valve 2 in the front modular reaction unit is opened, and the inlet solenoid valves 2 in the remaining modular reaction units are closed. The outlet solenoid valve 3 in the end modular reaction unit is opened, and the outlet solenoid valve 3 in the remaining modular reaction units is closed. Additionally, the circulation section can be opened for reaction according to the actual experimental requirements (the opening of the circulation section can be before or during the experiment). This utility model has the advantages of flexible operation, reduced investment costs, reduced floor space, convenient combination use, effective shortening of reaction cycle and improvement of equipment utilization rate.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A modular reaction system for use in a laboratory, characterized in that: The reaction system comprises several modular reaction units. The modular reaction unit includes at least a reactor (1), an inlet electric control valve (2) is provided on the inlet pipe of the reactor (1), an outlet electric control valve (3) is provided on the outlet pipe of the reactor (1), a circulation section is provided between the inlet pipe and the outlet pipe of the reactor (1), a semi-finished product inlet component is provided on the circulation section, and a semi-finished product outlet component is provided on the outlet pipe. The semi-finished product outlet in the previous modular reaction unit is connected to the semi-finished product inlet in the next modular reaction unit.

2. A modular reaction system for laboratory use according to claim 1, characterized in that: The outlet pipe between the outlet of the reactor (1) and the outlet solenoid valve (3) is provided with a semi-finished product outlet component, a first solenoid valve (4) and a circulation section in sequence.

3. A modular reaction system for use in a laboratory according to claim 2, characterized in that: The semi-finished product export component includes a first tee (16), the third end of which is connected to a first pipeline quick-connect fitting (20) via a second electric control valve (5).

4. A modular reaction system for use in a laboratory according to claim 2, characterized in that: The circulation section includes a second tee (17) installed on the outlet pipe. The third end of the second tee (17) is connected to the inlet of the circulation pump (12) through a third solenoid valve (6). The outlet of the circulation pump (12) is connected to the third end of the third tee (18) via a fourth solenoid valve (7) and a semi-finished product inlet component. The third tee (18) is installed on the inlet pipe between the inlet solenoid valve (2) and the inlet of the reactor (1).

5. A modular reaction system for use in a laboratory according to claim 4, characterized in that: The semi-finished product import component includes a fourth tee (19) located between the fourth solenoid valve (7) and the third tee (18), the third end of which is connected to the second pipeline quick-connect fitting (21) via the fifth solenoid valve (8).

6. A modular reaction system for use in a laboratory according to claim 4, characterized in that: A flow meter (9) is also installed on the inlet pipe between the third tee (18) and the reactor (1) inlet.

7. A modular reaction system for use in a laboratory according to claim 1, characterized in that: It also includes a raw material storage tank (10) and a finished product storage tank (11). The raw material storage tank (10) is connected to the inlet electric control valve (2) of several modular reaction units through the raw material pipeline. The outlet electric control valve (3) of several modular reaction units is connected to the finished product storage tank (11) through the discharge pipeline.

8. A modular reaction system for use in a laboratory according to claim 7, characterized in that: When the modular reaction units are in parallel, the outlet solenoid valves (3) in the modular reaction units are connected to the corresponding finished product storage tanks (11) through their respective discharge pipes.

9. A modular reaction system for use in a laboratory according to claim 7, characterized in that: It also includes a shell (13) disposed outside the modular reaction unit. Pipe holes (14) are provided around the shell (13). The pipe holes (14) include pipe holes for inserting raw material pipes, pipe holes for inserting discharge pipes, pipe holes for inserting semi-finished product inlet parts, and pipe holes for inserting semi-finished product outlet parts.

10. A modular reaction system for use in a laboratory according to claim 9, characterized in that: The upper part of the housing (13) is provided with an observation hole (15) for observing the flow meter.

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