Solids removal evaporator

Abstract

This utility model discloses a solid removal evaporator in the field of chemical equipment technology, comprising a vessel body and a segmented jacket. The segmented jacket includes several detachable and independent jacket sections connected to the outside of the vessel body, and each jacket section is connected to an independent heating medium flow component. By setting up independent segmented jackets, the solid removal evaporator of this utility model allows for independent adjustment of the heating parameters of each jacket section according to the characteristics of the material at different heights within the vessel body, achieving precise heating, improving evaporation efficiency and solid removal effect, and effectively solving the problem of uneven temperature that easily occurs with traditional integral jackets. Since each jacket section is independent and detachable, when a problem occurs in a certain jacket section, only that section needs to be replaced or repaired, without needing to treat the entire jacket, effectively reducing maintenance costs and downtime, while ensuring continuous production.

Description

Technical Field

[0001] This utility model relates to a solid removal evaporation kettle, belonging to the field of chemical equipment technology. Background Technology

[0002] Dimethyl sulfoxide (DMSO) is a commonly used organic solvent with excellent solubility for monomers such as acrylonitrile and some polymers, and it has wide applications in many fields. Its recycling has significant economic and environmental implications. In the carbon fiber preparation process, DMSO can fully dissolve relevant substances, ensuring the uniformity of the spinning solution and contributing to the formation of structurally uniform polyacrylonitrile (PAN) precursor fibers, laying the foundation for the subsequent preparation of high-performance carbon fibers. Furthermore, the use of an aqueous DMSO solution in the coagulation bath allows for slow solvent removal, which helps form a dense fiber structure, improving fiber density and orientation, and thus enhancing the mechanical properties of the carbon fiber. Therefore, recycling DMSO solvent is essential; however, the recycling process can easily generate some insoluble solid impurities.

[0003] Solid-removing evaporators are commonly used equipment in industries such as chemical and pharmaceutical manufacturing. They are mainly used to evaporate materials containing solid impurities while simultaneously achieving solid-liquid separation. The jacket, as a crucial component of the solid-removing evaporator, primarily functions to heat the material inside the vessel by introducing a heating medium (such as steam or heat transfer oil), thereby achieving solid-liquid separation.

[0004] Existing solids-removing evaporators all have a one-piece jacket. In actual production, on the one hand, the liquid inside the evaporator will evaporate and flow away at a certain temperature, causing the liquid level inside the evaporator to gradually drop. When it falls below a certain level, the jacket will be fully open, causing the solids adhering to the upper part of the evaporator (where there is no liquid) to be heated and eventually adhere tightly to the upper wall of the evaporator, making cleaning difficult. Continuous accumulation will reduce the fluidity of the material in the evaporator, ultimately affecting the heat transfer efficiency of the evaporator and even damaging the agitator. On the other hand, the heating intensity required for materials at different heights in the solids-removing evaporator may vary. For example, during the evaporation process, the material near the bottom of the evaporator has more solid impurities and poorer fluidity, requiring a higher heating temperature to promote evaporation and solid-liquid separation, while the material at the top has relatively better fluidity and requires a relatively lower heating intensity.

[0005] Therefore, the integrated jacket design leads to the adhesion of solid particles in the upper part of the vessel as the liquid phase evaporates, making it difficult to clean. Furthermore, it cannot achieve precise heating control of materials at different heights, resulting in uneven heating and affecting evaporation efficiency and solid removal. In addition, when a part of the jacket malfunctions (such as leakage or corrosion), due to its integrated structure, the entire jacket needs to be repaired or replaced, which not only incurs high repair costs but also causes prolonged downtime, impacting production schedules. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a solid removal evaporator. By setting up independent and detachable segmented jackets, it solves the problems of existing integrated jackets, such as inaccurate heating control, high maintenance costs, and long cleaning time.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] This utility model provides a solid removal evaporator, including a vessel body and a segmented jacket. The segmented jacket includes several jacket sections that are detachably connected to the outside of the vessel body and are independent of each other. Each jacket section is connected to an independent heating medium flow component.

[0009] Furthermore, the several jacketed sections are arranged sequentially along the height of the vessel body, which allows for precise heating control of materials at different heights of the vessel body by adjusting the flow rate, temperature, and pressure of the heating medium in different jacketed sections; adjacent jacketed sections are connected by sealing connectors to ensure that the heating medium does not leak.

[0010] This utility model only provides a structural method that can achieve independent control. The specific control process can be implemented by existing technology according to actual needs, and is not within the scope of this utility model, so it will not be described in detail.

[0011] Furthermore, the jacket section can be connected to the vessel body via bolts, screws, clamps, or other detachable connection methods. This allows for easy disassembly and replacement of a jacket section when it malfunctions, without affecting the normal operation of other jacket sections, significantly reducing maintenance costs and shortening downtime.

[0012] Furthermore, the outer side of each jacket section is wrapped with an insulation layer, which is made of materials with good thermal insulation properties (such as rock wool, glass wool, etc.), which can reduce heat loss and improve energy utilization efficiency.

[0013] Furthermore, the heating medium flow assembly includes a heating medium inlet valve, a heating medium delivery pipeline, and a heating medium outlet valve. Independent heating medium inlets and outlets allow for precise heating control of materials at different heights within the vessel. For example, when the liquid level inside the vessel is lower than the upper jacket position, the upper jacket can be closed to prevent strong adhesion of solid particles that would hinder cleaning. If a higher heating intensity is required in the bottom jacket section, the flow rate of the heating medium can be increased or its temperature can be raised.

[0014] Furthermore, the input ends of several heating medium inlet valves are connected to the same heat source input pipeline; the output ends of several heating medium outlet valves are connected to the same heat source output pipeline.

[0015] Furthermore, the top of the vessel is provided with a gas phase outlet, and the bottom is provided with a drain outlet and a drain valve.

[0016] Furthermore, the vessel is also equipped with a stirring device.

[0017] Furthermore, the stirring device includes a stirrer disposed within the vessel body and a drive mechanism disposed on the upper part of the vessel body to drive and connect the stirrer. The stirrer may be a paddle stirrer, anchor stirrer, frame stirrer, or ribbon stirrer, etc., and the drive mechanism may be an electric motor.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0019] The solid removal evaporator of this invention features an independent segmented jacket, allowing for precise heating by adjusting the heating parameters of each jacket segment according to the characteristics of the material at different heights within the evaporator. This improves evaporation efficiency and solid removal effect, effectively solving the problem of uneven temperature that often occurs with traditional integral jackets. Furthermore, each jacket segment is independent and detachable; if a segment malfunctions, only that segment needs to be replaced or repaired, eliminating the need to address the entire jacket. This significantly reduces maintenance costs, minimizes downtime, and ensures continuous production.

[0020] This invention features an insulation layer on the outside of the jacket section, which reduces heat loss and allows more heat to be used to heat the materials inside the vessel, thereby improving energy efficiency and reducing production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the solid removal evaporator provided in an embodiment of the present invention.

[0022] In the diagram: 1. Reactor body; 2. Agitator; 3. Motor; 4. Upper jacket; 41. Upper jacket heat source inlet valve; 42. Upper jacket heat source outlet valve; 5. Lower jacket; 51. Lower jacket heat source inlet valve; 52. Lower jacket heat source outlet valve; 6. Drain valve; 7. Gas phase outlet; 8. Heat source inlet pipeline; 9. Heat source outlet pipeline. Detailed Implementation

[0023] This invention provides a solid removal evaporator using a segmented jacket heating system. By segmenting the jacket, the following functions can be achieved:

[0024] (1) Precise temperature control: The heating or cooling of each section of the jacket can be independently controlled according to the specific temperature requirements of materials at different heights within the vessel body 1. For example, in the solidification evaporation process, the material's heat requirements differ in the initial and later stages of evaporation. The segmented jacket can provide a precise temperature environment for the material at different stages, improving solidification efficiency and product quality. It can also effectively solve the problem of uneven temperature that is prone to occur in traditional integral jackets. Each section of the jacket can be individually adjusted according to the actual situation of the material, preventing the material from deteriorating or coking due to local temperature anomalies. It is especially suitable for solidification evaporation processes of temperature-sensitive materials.

[0025] (2) Energy saving and consumption reduction: When the material level drops, the jacket section above the material level can be closed to avoid ineffective heating, reduce energy waste, and reduce cleaning difficulties caused by solid material adhesion. For example, in the later stage of evaporation, when the material amount decreases, only the jacket section with material at the bottom needs to be heated. Compared with continuous heating of the traditional whole jacket, this can reduce solid material adhesion and significantly reduce energy consumption. The segmented jacket allows for more reasonable distribution and flow of heating or cooling media, making heat transfer more efficient. The flow rate and temperature of the medium in each jacket section can be adjusted according to actual needs, so that energy can be fully utilized in the entire solid removal evaporation process, reducing the energy cost per unit product.

[0026] (3) Material handling optimization: For materials with different properties and different solid removal requirements, the processing needs can be better met by adjusting the temperature and heating method of the segmented jacket. Precise temperature control and flexible heating methods help optimize the evaporation and solid removal process of materials, improve the thoroughness and efficiency of solid removal, reduce the content of solid impurities in the product, and improve product quality.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the protection scope of the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1:

[0031] This utility model provides a solid removal evaporator, such as Figure 1 As shown, the apparatus includes a vessel body 1, with two gas phase outlets 7 above the head and a drain outlet 6 at the bottom; a stirring device is also provided inside the vessel body. A segmented jacket is fitted around the outside of the vessel body 1 for evaporating the mixture containing solid impurities to achieve solid-liquid separation.

[0032] The segmented jacket described in this embodiment consists of two segments, including an upper jacket 4 and a lower jacket 5. In some other embodiments, it can also be configured as multiple segments according to actual production needs.

[0033] In this embodiment, the upper jacket 4 and the lower jacket 5 are each connected to an independent heating medium flow assembly to achieve precise control of material heating in the upper jacket 4 and the lower jacket 5. The two sets of heating medium flow assemblies are connected in parallel between the heat source inlet pipeline 8 and the heat source outlet pipeline 9.

[0034] In this embodiment, the upper jacket 4 and the lower jacket 5 are detachably connected to the outside of the vessel body and connected in the middle by a sealing connector. When a jacket section malfunctions, it can be easily disassembled for repair or replacement without affecting the normal use of other jacket sections, which greatly reduces maintenance costs and shortens downtime.

[0035] In this embodiment, both the upper jacket 4 and the lower jacket 5 are wrapped with an insulation layer. The insulation layer is made of glass wool with good heat insulation performance, which can reduce heat loss and improve energy utilization efficiency.

[0036] Example 2:

[0037] This embodiment provides a solid removal evaporator, which further optimizes the technical solution based on Embodiment 1 to achieve better technical results. For details not described in this embodiment, please refer to Embodiment 1. This embodiment will not repeat them here.

[0038] In this embodiment, the heating medium flow assembly includes a heating medium (heat source) inlet valve, a heating medium (heat source) delivery pipeline, and a heating medium (heat source) outlet valve.

[0039] Specifically, such as Figure 1 As shown, in this embodiment, the upper jacket 4 is connected to the upper jacket heat source inlet valve 41 via a heat source delivery pipeline at its top and to the upper jacket heat source outlet valve 42 via a heat source delivery pipeline at its bottom. The lower jacket 5 is connected to the lower jacket heat source inlet valve 51 via a heat source delivery pipeline at its top and to the lower jacket heat source outlet valve 52 via a heat source delivery pipeline at its bottom. During use, the heating medium can flow from the heat source inlet pipeline 8 into the upper jacket heat source inlet valve 41 and the lower jacket heat source inlet valve 51 respectively, and flow out from the upper jacket heat source outlet valve 42 and the lower jacket heat source outlet valve 52 respectively to the heat source outlet pipeline 9. Opening the upper jacket heat source inlet valve 41 and the upper jacket heat source outlet valve 42 and closing the lower jacket heat source inlet valve 51 and the lower jacket heat source outlet valve 52 allows the upper jacket 4 to be opened independently, and vice versa. If the valves are fully open, both jacket sections are fully open. By opening different valves to adjust the flow rate, temperature, and pressure of the heating medium in different jacket sections, precise heating control of materials at different height positions in the vessel body 1 can be achieved.

[0040] In this embodiment, the upper jacket 4 and the lower jacket 5 are connected to the vessel body 1 by bolts. In some other embodiments, other detachable connection methods may also be selected.

[0041] In this embodiment, the stirring device includes a stirrer 2 and a motor 3. The stirrer 2 is located inside the vessel body 1, and the motor 3 is located on the top of the vessel body 1 and drives the stirrer 2.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A solid removal evaporator vessel characterized by, It includes a vessel body and a segmented jacket, wherein the segmented jacket includes several jacket segments that are detachably connected to the outside of the vessel body and are independent of each other, and each jacket segment is connected to an independent heating medium flow assembly.

2. The desolventizing evaporator of claim 1, wherein, Several jacket sections are arranged sequentially along the height of the vessel body, and adjacent jacket sections are connected by sealing connectors.

3. The desolventizing evaporator of claim 1, wherein, The jacket section is connected to the vessel body by bolts.

4. The desolventizing evaporator of claim 1, wherein, The outer side of each jacket section is wrapped with an insulation layer.

5. The desolventizing evaporator of claim 1, wherein, The heating medium flow assembly includes a heating medium inlet valve, a heating medium delivery pipeline, and a heating medium outlet valve.

6. The solid removal evaporator according to claim 5, characterized in that, The input ends of several heating medium inlet valves are connected to the same heat source input pipeline; the output ends of several heating medium outlet valves are connected to the same heat source output pipeline.

7. The desolventizing evaporative kier of claim 1 wherein, The reactor body is provided with a gas phase outlet at the top and a drain outlet and drain valve at the bottom.

8. The desolventizing evaporator of claim 1, wherein, The vessel is also equipped with a stirring device.

9. The desolventizing evaporator of claim 8, wherein, The stirring device includes a stirrer disposed inside the vessel and a drive mechanism disposed on the upper part of the vessel to drive and connect the stirrer.

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