Separation and purification device for producing 4, 4 '-diaminodiphenyl methane

Abstract

The utility model relates to the technical field of methane production, in particular to a 4, 4 '-diphenylmethane production device. The separation and purification device for 4, 4 '-diaminodiphenyl methane production comprises a discharging pipe and a separation and purification mechanism, the separation and purification mechanism comprises a filtering box, an intercepting box, a material pumping assembly, a distillation retort, a discharging assembly and an impurity discharging assembly, when MDA is produced, processed MDA enters the intercepting box from the discharging pipe, impurities such as residual raw materials carried by the MDA are intercepted in the intercepting box, and the MDA is separated from the filtering box. The separated MDA enters the filtering box, the material pumping assembly is started, the separated MDA is pumped into the distillation retort and distilled through an external heat source, due to the fact that the boiling point of the MDA is high, other devices in the MDA are distilled and separated, the MDA is transported to other sites from the impurity discharging assembly to be treated, and after distillation is completed, the MDA is pumped out through the discharging assembly. And the effects of direct treatment after production and manpower and material resource saving are achieved.

Description

Technical Field

[0001] This utility model relates to the field of methane production technology, and in particular to a separation and purification device for the production of 4,4'-diaminodiphenylmethane. Background Technology

[0002] 4,4'-Diaminodiphenylmethane, also known as "MDA", is chemically stable and can react with acidic substances, so it is widely used in the production and use of rubber products and polymer materials. It is generally produced in a reaction vessel, but existing reaction vessels are generally unidirectional stirring, which results in poor mixing effect.

[0003] Prior art CN219168183U discloses a bidirectional mixing and stirring reactor for synthesizing 4,4'-diaminodiphenylmethane, including a reaction vessel, a discharge pipe, a top cover, a rotating assembly, a transmission assembly, and a stirring assembly. The discharge pipe is fixedly connected to the bottom of the reaction vessel, the top cover is fixedly connected to the top of the reaction vessel, the rotating assembly is disposed on the top cover, the transmission assembly is disposed below the rotating assembly, and the stirring assembly is disposed within the transmission assembly. The stirring assembly includes multiple connecting rods, multiple stirring plates, multiple gears, and a gear ring. The multiple connecting rods are rotatably disposed within the transmission assembly, and the multiple stirring plates are respectively fixed... The device is fixedly connected to the surface of multiple connecting rods, and multiple gears are fixedly connected above the multiple connecting rods respectively. A gear ring is fixedly connected inside the upper cover and meshes with the multiple gears. When using the device, the raw materials are poured into the reaction tank, the rotating component is started, and the transmission component rotates. The raw materials are stirred at the lower end, and at the same time, the multiple connecting rods and multiple gears are moved. Because the multiple gears mesh with the gear ring, the multiple gears rotate when they move, and drive the multiple connecting rods to rotate, so that the multiple stirring plates stir the raw materials, realizing multiple stirring, obtaining bidirectional stirring, and improving the stirring and mixing capacity of the device.

[0004] However, the existing two-way mixing and stirring reactors used for the synthesis of 4,4'-diaminodiphenylmethane are not equipped with separation and purification devices. The resulting "MDA" contains impurities and needs to be transported to other devices for further processing before it can be used. Utility Model Content

[0005] The purpose of this invention is to provide a separation and purification device for the production of 4,4'-diaminodiphenylmethane, which aims to solve the problem that the existing two-way mixing and stirring reactor used for the synthesis of 4,4'-diaminodiphenylmethane does not have a separation and purification device, and the "MDA" produced contains impurities and needs to be transported to other devices for further processing before it can be used.

[0006] To achieve the above objectives, this utility model provides a separation and purification device for the production of 4,4'-diaminodiphenylmethane, including a discharge pipe and a separation and purification mechanism. The separation and purification mechanism includes a filter box, an interception box, a material extraction component, a distillation tank, a discharge component, and a waste removal component. The filter box is fixedly connected to one side of the discharge pipe, the interception box is slidably connected inside the filter box, the material extraction component is disposed inside the filter box, the distillation tank is disposed to one side of the material extraction component, the discharge component is disposed on the distillation tank, and the waste removal component is disposed above the distillation tank.

[0007] The material extraction assembly includes a material extraction pipe and a submersible pump. The material extraction pipe is fixedly connected inside the filter box and communicates with the inside of the distillation tank. The submersible pump is fixedly connected below the material extraction pipe.

[0008] The discharge assembly includes a discharge pipe, a discharge valve, and a transport component. The discharge pipe is fixedly connected to the top of the distillation tank, the discharge valve is fixedly connected to the discharge pipe, and the transport component is disposed inside the discharge pipe.

[0009] The transport component includes a transport pipe and a transport pump. The transport pipe is slidably connected to the discharge pipe, and the transport pump is fixedly connected to the transport pipe and located inside the distillation tank.

[0010] The impurity removal assembly includes an impurity removal port and an impurity removal pipe. The impurity removal port is fixedly connected to the top of the distillation tank, and the impurity removal pipe is fixedly connected to the surface of the impurity removal port.

[0011] This invention discloses a separation and purification device for the production of 4,4'-diaminodiphenylmethane. During MDA production, the processed MDA enters the interception box from the discharge pipe. Impurities such as residual raw materials carried by the MDA are intercepted in the interception box, achieving separation and impurity removal. The separated MDA then enters the filter box. The pumping assembly is activated to draw the separated MDA into the distillation tank, where it is distilled using an external heat source. Because MDA has a high boiling point, other components within it are distilled and separated, and then transported from the impurity removal assembly to another location for further processing. After distillation, the MDA is extracted through the discharge assembly. This avoids the problem of existing bidirectional mixing and stirring reactors used for the synthesis of 4,4'-diaminodiphenylmethane lacking separation and purification devices, resulting in MDA containing impurities that needs to be transported to other devices for further processing before use. This device achieves direct post-production processing, saving manpower and resources. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a front view of the entire utility model.

[0015] Figure 3 This is a right view of the entire utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the material extraction component, the material discharge component, and the waste removal component of this utility model.

[0017] 1-Discharge pipe, 2-Filter box, 3-Interception box, 4-Suction assembly, 5-Distillation tank, 6-Discharge assembly, 7-Impure removal assembly, 8-Suction pipe, 9-Submersible pump, 10-Discharge pipe, 11-Discharge valve, 12-Transport component, 13-Transport pipe, 14-Transport pump, 15-Impure removal port, 16-Impure removal pipe. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please see Figures 1-4 ,in Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the entire utility model; Figure 3 This is a right view of the entire utility model; Figure 4 This is a schematic diagram of the structure of the material extraction component, the material discharge component, and the waste removal component of this utility model.

[0020] This utility model provides a separation and purification device for the production of 4,4'-diaminodiphenylmethane: it includes a discharge pipe 1 and a separation and purification mechanism. The separation and purification mechanism includes a filter box 2, an interception box 3, a material extraction component 4, a distillation tank 5, a discharge component 6, and a waste removal component 7. The material extraction component 4 includes a material extraction pipe 8 and a submersible pump 9. The discharge component 6 includes a discharge pipe 10, a discharge valve 11, and a transport component 12. The transport component 12 includes a transport pipe 13 and a transport pump 14. The waste removal component 7 includes a waste removal port 15 and a waste removal pipe 16. The aforementioned solution solves the problem that existing bidirectional mixing and stirring reactors used for the synthesis of 4,4'-diaminodiphenylmethane do not have a separation and purification device, resulting in the production of "MDA" containing impurities, which needs to be transported to other devices for further processing before it can be used.

[0021] In this specific embodiment, the filter box 2 is fixedly connected to one side of the discharge pipe 1, the interception box 3 is slidably connected inside the filter box 2, the material extraction component 4 is disposed inside the filter box 2, the distillation tank 5 is disposed on one side of the material extraction component 4, the discharge component 6 is disposed on the distillation tank 5, and the impurity removal component 7 is disposed above the distillation tank 5. During MDA production, the processed MDA enters the interception box 3 from the discharge pipe 1, and the residual raw materials and other impurities it carries are intercepted in the interception box 3, achieving separation and impurity removal. The separated MDA enters the filter box 2, and the material extraction component 4 is activated to extract the separated MDA into the distillation tank 5. Distillation is carried out by an external heat source. Because MDA has a high boiling point, other components inside are distilled and separated, and transported from the impurity removal component 7 to other sites for processing. After distillation is completed, the MDA is extracted through the discharge component 6.

[0022] The material extraction pipe 8 is fixedly connected to the filter box 2 and communicates with the interior of the distillation tank 5. The submersible pump 9 is fixedly connected below the material extraction pipe 8. When the material extraction assembly 4 is used, the submersible pump 9 is started to pump the liquid MDA in the filter box 2 into the distillation tank 5.

[0023] Secondly, the discharge pipe 10 is fixedly connected to the top of the distillation tank 5, the discharge valve 11 is fixedly connected to the discharge pipe 10, and the transport component 12 is disposed inside the discharge pipe 10. After distillation, the discharge valve 11 is opened, and the transport component 12 is inserted from the discharge pipe 10 into the distillation tank 5. The purified liquid MDA in the distillation tank 5 is extracted through the transport component 12 for subsequent drying and other operations.

[0024] Meanwhile, the transport pipe 13 is slidably connected to the discharge pipe 10, and the transport pump 14 is fixedly connected to the transport pipe 13 and located in the distillation tank 5. When using the transport component 12, the transport pipe 13 is inserted into the discharge pipe 10, and the transport pump 14 is started to extract the distilled liquid MDA for subsequent drying, crystallization and other operations.

[0025] Finally, the impurity discharge port 15 is fixedly connected to the top of the distillation tank 5, and the impurity discharge pipe 16 is fixedly connected to the surface of the impurity discharge port 15. When distilling liquid MDA, because its boiling point is high and the residual boiling point generated during production is low, the impurities in it can reach the boiling point under controlled temperature conditions, enter the impurity discharge pipe 16 from the impurity discharge port 15, and be discharged to a designated location for processing.

[0026] During MDA production, the processed MDA enters the interception box 3 from the discharge pipe 1. Impurities such as residual raw materials carried by the MDA are intercepted in the interception box 3, achieving separation and impurity removal. The separated MDA enters the filter box 2. The extraction component 4 is activated to draw the separated MDA into the distillation tank 5, where it is distilled using an external heat source. Because MDA has a high boiling point, other components within it are distilled and separated, and then transported from the impurity removal component 7 to another location for further processing. After distillation, the MDA is extracted through the discharge component 6. During MDA production, due to its vigorous reaction, it is initially liquid. When using the extraction component 4, the submersible pump 9 is activated to draw the liquid MDA from the filter box 2 into the distillation tank 5. After distillation, the discharge valve 11 is opened, and the transport component 12 is inserted from the discharge pipe 10 into the distillation tank 5. The transport component 12 extracts the purified liquid MDA from the distillation tank 5 for subsequent drying and other operations. When using the transport component 12, the transport pipe 13 is inserted into the discharge pipe 10, and the transport pump 14 is started to extract the distilled liquid MDA for subsequent drying and crystallization operations. When distilling liquid MDA, because its boiling point is relatively high and the residual boiling point generated during production is relatively low, the impurities in it can reach their boiling point under controlled temperature conditions. They enter the impurity discharge pipe 16 from the impurity discharge port 15 and are discharged to a designated location for processing. This avoids the problem that the existing two-way mixing and stirring reactor used for synthesizing 4,4'-diaminodiphenylmethane does not have a separation and purification device, and the produced "MDA" contains impurities and needs to be transported to other devices for further processing before it can be used. This achieves the effect of direct processing after production, saving manpower and resources.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A separation and purification apparatus for the production of 4,4'-diaminodiphenylmethane, comprising a discharge pipe, characterized in that, It also includes separation and purification mechanisms; The separation and purification mechanism includes a filter box, an interception box, a material extraction component, a distillation tank, a material discharge component, and a waste removal component; The filter box is fixedly connected to one side of the discharge pipe, the interception box is slidably connected inside the filter box, the material extraction component is disposed inside the filter box, the distillation tank is disposed on one side of the material extraction component, the discharge component is disposed on the distillation tank, and the impurity removal component is disposed above the distillation tank.

2. The separation and purification apparatus for the production of 4,4'-diaminodiphenylmethane as described in claim 1, characterized in that, The material extraction assembly includes a material extraction pipe and a submersible pump. The material extraction pipe is fixedly connected inside the filter box and communicates with the inside of the distillation tank. The submersible pump is fixedly connected below the material extraction pipe.

3. The separation and purification apparatus for the production of 4,4'-diaminodiphenylmethane as described in claim 1, characterized in that, The discharge assembly includes a discharge pipe, a discharge valve, and a transport component. The discharge pipe is fixedly connected to the top of the distillation tank, the discharge valve is fixedly connected to the discharge pipe, and the transport component is disposed inside the discharge pipe.

4. The separation and purification apparatus for the production of 4,4'-diaminodiphenylmethane as described in claim 3, characterized in that, The transport component includes a transport pipe and a transport pump. The transport pipe is slidably connected to the discharge pipe, and the transport pump is fixedly connected to the transport pipe and located inside the distillation tank.

5. The separation and purification apparatus for the production of 4,4'-diaminodiphenylmethane as described in claim 1, characterized in that, The impurity removal assembly includes an impurity removal port and an impurity removal pipe. The impurity removal port is fixedly connected to the top of the distillation tank, and the impurity removal pipe is fixedly connected to the surface of the impurity removal port.

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