A diazotization continuous reaction feeding device

Abstract

The utility model belongs to the technical field of feeding devices, and specifically relates to a diazotization continuous reaction feeding device; it comprises a material box, a plurality of material tanks are arranged in the material box, a feeding port is arranged on the top of the material tank, and a discharge pipe is connected to the bottom of the material tank; a distribution pipe is connected to the lower end of the discharge pipe, the distribution pipe is a three-way pipe, the left end interface of the distribution pipe is connected to a vertical material pipe, the right end interface of the distribution pipe is connected to a reaction feed pipe, and the lower end of the reaction feed pipe is connected to a microchannel reaction box; a reaction discharge pipe is connected to the bottom of the microchannel reaction box, and a material collection pipe is connected to the lower end of the reaction discharge pipe; an inclined material pipe is connected to the middle of the vertical material pipe, and the lower end of the inclined material pipe is connected to the side of the material collection pipe, so that the inclined material pipe is connected to the material collection pipe; the utility model can regulate and control various materials for the diazotization continuous reaction that requires multiple materials to participate in the reaction and control, improve the installation and use efficiency of the device, reduce the labor intensity, and enhance the efficiency of regulating and controlling various materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of feeding devices, and in particular relates to a diazotization continuous reaction feeding device. Background Art

[0002] Diazotization reaction is an important organic chemical reaction, which involves the process of aromatic primary amines and nitrous acid reacting in a strong acid medium to generate diazonium salts. The reaction is usually carried out at low temperatures, and the feeding device plays an important role in it, including controlling the ratio of reactants, such as by accurately controlling the feeding ratio of aromatic primary amines, sodium nitrite and inorganic acid to ensure that the reaction proceeds according to the set molar ratio, thereby obtaining the ideal diazonium salt product; the feeding device can maintain the low temperature conditions required for the reaction, avoid product decomposition or side reactions caused by excessive temperature, and through continuous feeding, the reaction materials can always be kept in an efficient reaction state, thereby improving the reaction speed and product quality; the design and operation of the feeding device Safety must be taken into consideration to avoid runaway reactions or dangers caused by improper or excessive addition of materials. The feeding device can ensure that each added raw material can be accurately measured to avoid the influence of errors on the reaction results. During the feeding process, it is necessary to ensure that the raw materials can be evenly mixed to ensure the uniformity and stability of the reaction. At the same time, the control of the feeding speed is the key. Too fast or too slow may affect the effect and safety of the reaction. The diazotization reaction requires the use of a variety of materials. During the continuous diazotization reaction, the cooperation of multiple feeding devices is required to ensure the smooth progress of the reaction. The overall structure is complex, the installation is time-consuming and labor-intensive, and the coordination and regulation of multiple feeding devices is inconvenient. Therefore, it is very necessary to provide a new type of diazotization continuous reaction feeding device. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a diazotization continuous reaction feeding device, which can regulate and control various materials in the diazotization continuous reaction that requires multiple materials to participate in the reaction and control, improve the installation and use efficiency of the device, reduce the labor intensity, and enhance the efficiency of regulating and controlling various materials.

[0004] The purpose of the utility model is achieved as follows: a diazotization continuous reaction feeding device, which includes a material box, a plurality of material tanks are arranged in the material box, a feed port is arranged on the top of the material tank, and a discharge pipe is connected to the bottom of the material tank;

[0005] The lower end of the discharge pipe is connected with a distribution pipe, the distribution pipe is a three-way pipe, the left end interface of the distribution pipe is connected with a vertical material pipe, the right end interface of the distribution pipe is connected with a reaction feed pipe, and the lower end of the reaction feed pipe is connected to the microchannel reaction box;

[0006] The bottom of the microchannel reaction box is connected to a reaction discharge pipe, and the lower end of the reaction discharge pipe is connected to a material collection pipe; the middle of the vertical material pipe is connected to an inclined material pipe, and the lower end of the inclined material pipe is connected to the side of the material collection pipe, so that the inclined material pipe is connected to the material collection pipe.

[0007] By arranging a plurality of material tanks in the material box, materials required for various reactions can be pre-processed and stored, and by arranging the distribution pipe, the materials can be diverted. Materials that need to directly participate in the reaction can be directly connected to other pipelines or equipment through one side of the distribution pipe and then through the vertical material pipe, while materials that need to mix or react multiple materials first can pass through the other side of the distribution pipe and then enter the microchannel reaction box through the reaction feed pipe for mixing or reaction, and then can be connected to other pipelines or equipment after passing through the reaction discharge pipe and the collection pipe to carry out subsequent operation processes; materials that directly enter the vertical material pipe need to be merged and mixed with the mixed materials passing through the microchannel reaction box, and can be transferred to the collection pipe through the inclined material pipe; by controlling each pipeline, multiple materials can be adjusted and controlled, and the operation is convenient and quick.

[0008] Furthermore, an upper partition and a lower partition are fixedly arranged in the material box, and the upper partition and the lower partition are provided with through holes for the material tank to pass through; the upper partition and the lower partition are sleeved on the outside of the material tank through the through holes, thereby limiting and supporting the material tank.

[0009] Furthermore, a limiting ring sleeve is provided on the upper partition, and the limiting ring sleeve is provided on the periphery of the through hole on the upper partition; the material tank passes through the through hole and the limiting ring sleeve provided on the upper partition.

[0010] Furthermore, a support block is provided on the lower partition, and the support block is arranged on the periphery of the perforation on the lower partition. A contraction cone tube is provided at the lower part of the material tank, and the end of the support block is pressed against the side surface of the contraction cone tube; the contraction cone tube is pressed and supported by the support block.

[0011] Furthermore, the feed port at the top of the material tank is connected to a first flange interface, the lower outlet of the vertical material pipe is connected to a second flange interface, and the lower outlet of the material collecting pipe is connected to a third flange interface.

[0012] Furthermore, a plurality of fixing rings are arranged on the top surface of the material box, the positions of the fixing rings correspond to the positions of the material tank, and the upper part of the material tank passes through the top surface of the material box and the fixing rings at corresponding positions; the material tank can be fixed and limited by the fixing rings.

[0013] Furthermore, a sixth control valve is provided on the discharge pipe, and a fifth control valve is provided on the reaction discharge pipe; the discharge flow rate of the corresponding material tank can be adjusted and controlled by the sixth control valve, and the discharge flow rate of the microchannel reaction box can be adjusted and controlled by the fifth control valve.

[0014] Furthermore, a first control valve is provided on the side pipeline connecting the distribution pipe and the vertical feed pipe, and a second control valve is provided on the side pipeline connecting the distribution pipe and the reaction feed pipe; the material flow to the vertical feed pipe can be adjusted and controlled by the first control valve, and the material flow to the reaction feed pipe can be adjusted and controlled by the second control valve.

[0015] Furthermore, a third control valve is provided on the lower section of the vertical material pipe, and a fourth control valve is provided on the inclined material pipe.

[0016] Beneficial effects of the utility model: the utility model is a diazotization continuous reaction feeding device, wherein a plurality of material tanks are arranged in the material box, and a discharge pipe is connected to the bottom of the material tank; a distribution pipe is connected to the lower end of the discharge pipe, and the distribution pipe is a three-way pipe, and the distribution pipe is connected to a vertical material pipe and a reaction feed pipe, and the lower end of the reaction feed pipe is connected to a microchannel reaction box; a reaction discharge pipe is connected to the bottom of the microchannel reaction box, and a collection pipe is connected to the lower end of the reaction discharge pipe; the middle part of the vertical material pipe is connected to the collection pipe through an inclined material pipe; by arranging a plurality of the material tanks in the material box, materials required for a variety of reactions can be pre-processed and stored, and by arranging the distribution pipe, each material can be diverted, and those that need to directly participate in the reaction can be directly connected to other pipelines or equipment through one side of the distribution pipe and then through the vertical material pipe. , and if multiple materials need to be mixed or reacted first, they can pass through the other side of the distribution pipe and then enter the microchannel reaction box through the reaction feed pipe for mixing or reaction, and then pass through the reaction discharge pipe and the collection pipe to be connected with other pipelines or equipment to carry out subsequent operation processes; if the material directly entering the vertical material pipe needs to be merged and mixed with the mixed material passing through the microchannel reaction box, it can be passed through the inclined material pipe to the collection pipe; by controlling each pipeline, multiple materials can be adjusted and controlled, and the operation is convenient and fast; the utility model is a diazotization continuous reaction feeding device with reasonable structure and convenient operation. It can adjust and control each material for the diazotization continuous reaction that requires multiple materials to participate in the reaction and control, improve the installation and use efficiency of the device, reduce the labor intensity, and enhance the efficiency of the regulation of each material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a three-dimensional structural schematic diagram of a diazotization continuous reaction feeding device.

[0018] Figure 2 It is a front view structural schematic diagram of a diazotization continuous reaction feeding device of the utility model.

[0019] Figure 3 The utility model is a schematic diagram of a top view of a diazotization continuous reaction feeding device.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a diazotization continuous reaction feeding device viewed from above.

[0021] Figure 5 The utility model is a three-dimensional structural schematic diagram of a diazotization continuous reaction feeding device with the side of the material box removed.

[0022] Figure 6 The utility model is a front view structural schematic diagram of a diazotization continuous reaction feeding device with the side of the material box removed. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

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

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0026] like Figure 1-6 As shown, a diazotization continuous reaction feeding device comprises a material box 8, wherein a plurality of material tanks 24 are arranged in the material box 8, a feed port 10 is arranged at the top of the material tank 24, and a discharge pipe 19 is connected to the bottom of the material tank 24;

[0027] The lower end of the discharge pipe 19 is connected to a feed pipe 7, which is a three-way pipe. The left end interface of the feed pipe 7 is connected to a vertical feed pipe 5, and the right end interface of the feed pipe 7 is connected to a reaction feed pipe 26. The lower end of the reaction feed pipe 26 is connected to the microchannel reaction box 16.

[0028] The bottom of the microchannel reaction box 16 is connected to a reaction discharge pipe 14, and the lower end of the reaction discharge pipe 14 is connected to a material collection pipe 13; the middle of the vertical material pipe 5 is connected to an inclined material pipe 4, and the lower end of the inclined material pipe 4 is connected to the side of the material collection pipe 13, so that the inclined material pipe 4 is connected to the material collection pipe 13.

[0029] By arranging a plurality of material tanks 24 in the material box 8, the materials required for various reactions can be pre-processed and stored, and by arranging the distribution pipe 7, the materials can be diverted. The materials that need to directly participate in the reaction can pass through one side of the distribution pipe 7 and then be directly connected to other pipelines or equipment through the vertical material pipe 5. The materials that need to mix or react multiple materials first can pass through the other side of the distribution pipe 7 and then enter the microchannel reaction box 16 through the reaction feed pipe 26 for mixing or reaction, and then can be connected to other pipelines or equipment after passing through the reaction discharge pipe 14 and the collection pipe 13 to carry out subsequent operation processes; the materials that directly enter the vertical material pipe 5 need to be merged and mixed with the mixed materials passing through the microchannel reaction box 16, and can be passed through the inclined material pipe 4 to the collection pipe 13; by controlling each pipeline, multiple materials can be adjusted and controlled, and the operation is convenient and quick.

[0030] Furthermore, in one embodiment, an upper partition 22 and a lower partition 20 are fixedly provided in the material box 8, and the upper partition 22 and the lower partition 20 are provided with through holes for the material tank 24 to pass through; the upper partition 22 and the lower partition 20 are sleeved on the outside of the material tank 24 through the through holes, so as to limit and support the material tank 24. The structure is simple and reasonable, and can effectively ensure the structural strength and stability of the material tank 24 in the material box 8.

[0031] Furthermore, in one embodiment, a limiting ring sleeve 23 is provided on the upper partition 22, and the limiting ring sleeve 23 is provided at the periphery of the through hole on the upper partition 22; the material tank 24 passes through the through hole and the limiting ring sleeve 23 provided on the upper partition 22, and the limiting ring sleeve 23 can be used to stably and effectively limit the material tank 24, thereby further ensuring its stability.

[0032] Furthermore, in one embodiment, a support block 21 is provided on the lower partition 20, and the support block 21 is arranged at the periphery of the perforation on the lower partition 20. A contraction cone 25 is provided at the lower part of the material tank 24, and the end of the support block 21 is pressed against the side of the contraction cone 25; the contraction cone 25 can be pressed and supported by the support block 21, thereby supporting the entire material tank 24 to ensure its stability in the material box 8.

[0033] Furthermore, in one embodiment, the feed port 10 at the top of the material tank 24 is connected to a first flange interface 11, the lower end outlet of the vertical material pipe 5 is connected to a second flange interface 1, and the lower end outlet of the collecting pipe 13 is connected to a third flange interface 12; the first flange interface 11, the second flange interface 1 and the third flange interface 12 can be connected to the interfaces of other equipment or pipelines to transport materials, the structure is simple and reasonable, the connection is convenient and quick, and the device is easy to install and use.

[0034] Furthermore, in one embodiment, a plurality of fixing rings 9 are provided on the top surface of the material box 8, and the position of the fixing rings 9 corresponds to the position of the material tank 24. The upper part of the material tank 24 passes through the top surface of the material box 8 and the fixing rings 9 at the corresponding position; the material tank 24 can be fixed and limited by the fixing rings 9 to ensure its structural stability in the material box 8, so that it has stable structural stability when connected to other equipment or pipelines, so as to facilitate the installation and use of the device.

[0035] Furthermore, in one embodiment, a sixth control valve 18 is provided on the discharge pipe 19, and a fifth control valve 15 is provided on the reaction discharge pipe 14; the discharge flow rate of the corresponding material tank 24 can be adjusted and controlled by the sixth control valve 18, and the discharge flow rate of the microchannel reaction box 16 can be adjusted and controlled by the fifth control valve 15, which is convenient and quick to operate, thereby improving the operability of the device.

[0036] Furthermore, in one embodiment, a first control valve 6 is provided on a side pipeline connecting the distribution pipe 7 and the vertical feed pipe 5, and a second control valve 17 is provided on a side pipeline connecting the distribution pipe 7 and the reaction feed pipe 26; the material flow to the vertical feed pipe 5 can be adjusted and controlled by the first control valve 6, and the material flow to the reaction feed pipe 26 can be adjusted and controlled by the second control valve 17, which is convenient and quick to operate, thereby improving the operability of the device.

[0037] Furthermore, in one embodiment, a third control valve 3 is provided on the lower section of the vertical material pipe 5, and a fourth control valve 2 is provided on the inclined material pipe 4; the material flow out of the vertical material pipe 5 can be adjusted and controlled by the third control valve 3, and the material flow from the inclined material pipe 4 to the manifold 13 can be adjusted and controlled by the fourth control valve 2.

[0038] In summary, the utility model is a diazotization continuous reaction feeding device, wherein a plurality of material tanks 24 are arranged in the material box 8, and a discharge pipe 19 is connected to the bottom of the material tank 24; a distribution pipe 7 is connected to the lower end of the discharge pipe 19, and the distribution pipe 7 is a three-way pipe, and the distribution pipe 7 is connected to a vertical material pipe 5 and a reaction feed pipe 26, and the lower end of the reaction feed pipe 26 is connected to a microchannel reaction box 16; a reaction discharge pipe 14 is connected to the bottom of the microchannel reaction box 16, and a manifold 13 is connected to the lower end of the reaction discharge pipe 14; the middle part of the vertical material pipe 5 is connected to the manifold 13 through an inclined material pipe 4; the material box 8 can pre-treat and store materials required for a variety of reactions by arranging a plurality of material tanks 24, and the distribution pipe 7 can be used to divert the materials, and the materials that need to directly participate in the reaction can be directly connected to other materials through one side of the distribution pipe 7 and then through the vertical material pipe 5. The pipelines or equipment are connected, and if multiple materials need to be mixed or reacted first, they can pass through the other side of the distribution pipe 7 and then enter the microchannel reaction box 16 through the reaction feed pipe 26 for mixing or reaction, and then pass through the reaction discharge pipe 14 and the collection pipe 13 to be connected with other pipelines or equipment to carry out subsequent operation processes; the material directly entering the vertical material pipe 5 needs to be merged and mixed with the mixed material passing through the microchannel reaction box 16, and can be passed through the inclined material pipe 4 to the collection pipe 13; by controlling each pipeline, multiple materials can be adjusted and controlled, and the operation is convenient and fast; the utility model is a diazotization continuous reaction feeding device with reasonable structure and convenient operation. It can adjust and control each material for the diazotization continuous reaction that requires multiple materials to participate in the reaction and control, improve the installation and use efficiency of the device, reduce the labor intensity, and enhance the efficiency of the regulation of each material.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A diazotization continuous reaction feeding device, characterized in that: It comprises a material box (8), wherein a plurality of material tanks (24) are arranged in the material box (8), a material inlet (10) is arranged at the top of the material tank (24), and a material outlet pipe (19) is connected to the bottom of the material tank (24); The lower end of the discharge pipe (19) is connected to a distribution pipe (7), the distribution pipe (7) is a three-way pipe, the left end interface of the distribution pipe (7) is connected to a vertical material pipe (5), the right end interface of the distribution pipe (7) is connected to a reaction feed pipe (26), and the lower end of the reaction feed pipe (26) is connected to the microchannel reaction box (16); The bottom of the microchannel reaction box (16) is connected to a reaction discharge pipe (14), and the lower end of the reaction discharge pipe (14) is connected to a material collection pipe (13); the middle of the vertical material pipe (5) is connected to an inclined material pipe (4), and the lower end of the inclined material pipe (4) is connected to the side of the material collection pipe (13), so that the inclined material pipe (4) is connected to the material collection pipe (13).

2. A diazotization continuous reaction feeding device according to claim 1, characterized in that: An upper partition (22) and a lower partition (20) are fixedly arranged in the material box (8), and the upper partition (22) and the lower partition (20) are provided with holes for the material tank (24) to pass through.

3. A diazotization continuous reaction feeding device according to claim 2, characterized in that: A limiting ring sleeve (23) is provided on the upper partition plate (22), and the limiting ring sleeve (23) is arranged at the periphery of the through hole on the upper partition plate (22).

4. A diazotization continuous reaction feeding device according to claim 2, characterized in that: A support block (21) is provided on the lower baffle (20), and the support block (21) is arranged at the periphery of the perforation on the lower baffle (20). A contraction cone (25) is provided at the lower part of the material tank (24), and the end of the support block (21) is pressed against the side surface of the contraction cone (25).

5. A diazotization continuous reaction feeding device according to claim 1, characterized in that: The feed port (10) at the top of the material tank (24) is connected to a first flange interface (11), the lower outlet of the vertical material pipe (5) is connected to a second flange interface (1), and the lower outlet of the material collection pipe (13) is connected to a third flange interface (12).

6. A diazotization continuous reaction feeding device according to claim 2, characterized in that: A plurality of fixing rings (9) are arranged on the top surface of the material box (8), and the positions of the fixing rings (9) correspond to the positions of the material tank (24). The upper part of the material tank (24) passes through the top surface of the material box (8) and the fixing rings (9) at corresponding positions.

7. A diazotization continuous reaction feeding device according to claim 1, characterized in that: The discharge pipe (19) is provided with a sixth control valve (18), and the reaction discharge pipe (14) is provided with a fifth control valve (15).

8. A diazotization continuous reaction feeding device according to claim 7, characterized in that: A first control valve (6) is provided on the pipeline on one side where the material distribution pipe (7) is connected to the vertical material pipe (5), and a second control valve (17) is provided on the pipeline on one side where the material distribution pipe (7) is connected to the reaction feed pipe (26).

9. A diazotization continuous reaction feeding device according to claim 8, characterized in that: A third control valve (3) is provided on the lower section of the vertical material pipe (5), and a fourth control valve (2) is provided on the inclined material pipe (4).

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