A distillation separation device for tetrahydrofuran polyol copolymer

Abstract

The utility model discloses a distillation separation device for tetrahydrofuran polyol copolymer, relates to the technical field of distillation separation, and comprises a base, wherein a heating mechanism is arranged at the upper end of the base, and the heating mechanism comprises: a heating component, which is arranged at the upper part of the base and comprises a heating bottle installed on the base, wherein a heat preservation sleeve is sleeved on the outer side of the heating bottle, an inner shell is fixed on the inner wall of the heating bottle, and an electric heating wire tube is installed between the heating bottle and the inner shell; a compression component, which is arranged at the upper part of the heating bottle and is used for compressing the inner space of the heating bottle; and an air pressure indicating component, which is arranged on the compression component, wherein raw materials for producing tetrahydrofuran polyol copolymer enter the heating bottle through an external pipeline, and a power supply is inserted into a plurality of groups of electric heating wire tubes distributed in a circumferential array at the bottom, so that the raw materials are heated through the inner shell, and in this process, the heat preservation sleeve outside the heating bottle plays a heat preservation role, thereby reducing the heat loss inside the heating bottle.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation separation, in particular to a distillation separation device for a tetrahydrofuran polyol copolymer. Background Art

[0002] Tetrahydrofuran (THF) is an important heterocyclic organic compound with strong polarity and excellent solvent properties, and is widely used in chemical reactions and extraction processes. At the same time, tetrahydrofuran is also a key raw material for preparing a variety of polymer materials, such as tetrahydrofuran polyol copolymers. However, with the widespread application of tetrahydrofuran and its copolymers in industrial production, its distillation separation technology is also faced with many challenges. Tetrahydrofuran polyol copolymers are a type of polymer material obtained by reacting tetrahydrofuran with polyols, and have excellent physical properties and chemical stability. However, in the production process of tetrahydrofuran polyol copolymers, a mixture containing impurities and unreacted raw materials is often produced. In order to obtain pure tetrahydrofuran polyol copolymers, it is necessary to use distillation separation technology to separate them from the mixture.

[0003] In the existing distillation separation technology, for example, a patent with publication number CN212854675U discloses a distillation separation device, which includes: an evaporation component, which includes an evaporation bottle, a heating element and a guide tube, the evaporation bottle contains a receiving space, one end of the guide tube is connected to the steam outlet of the evaporation bottle, the other end of the guide tube is connected to the outside, and the heating element heats the evaporation bottle; a feeding component, which includes a feed pipe, a feed pipe, a storage box and a feed pump, one end of the feed pipe is connected to the storage box, the other end of the feed pipe is connected to the feed pump, the feed pipe is wound around the guide tube, one end of the feed pipe is connected to the feed pump, and the other end is connected to the evaporation bottle. The material to be separated is placed in the evaporation bottle, the heating element heats the evaporation bottle, and the low boiling point components in the material boil and evaporate to become steam, and the steam enters the feed pipe through the bottle mouth. The feed pipe condenses the steam in the guide pipe. The material in the feed pipe is preheated by the guide pipe, and the preheated material can boil faster. The heat energy in the steam is absorbed and utilized, which improves the energy utilization efficiency of the distillation separation device.

[0004] Although the traditional distillation separation technology described in the above patent can achieve the separation of tetrahydrofuran polyol copolymers to a certain extent, it still has many shortcomings. First, the bottles used for evaporating the raw materials are heated from the bottom, which easily causes a large amount of heat overflow. In addition, it is difficult for the heated bottles themselves to retain heat, resulting in a waste of corresponding energy. For this reason, the utility model provides a distillation separation device for tetrahydrofuran polyol copolymers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a distillation and separation device for tetrahydrofuran polyol copolymers, which solves the problem that the traditional distillation and separation devices mostly use a bottom heating method for the bottle body used for evaporating raw materials, which easily causes a large amount of heat overflow. In addition, the heated bottle body itself is difficult to retain heat, thereby causing a corresponding waste of energy.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a distillation separation device for tetrahydrofuran polyol copolymer, comprising a base, a heating mechanism is provided at the upper end of the base, and the heating mechanism includes:

[0007] The heating assembly is arranged on the upper part of the base, and comprises a heating bottle installed on the base, the outer part of the heating bottle is sleeved with a heat preservation sleeve, the inner wall of the heating bottle is fixed with an inner shell, and an electric heating wire tube is installed between the heating bottle and the inner shell;

[0008] A compression assembly is disposed on the upper portion of the heating bottle and is used to compress the inner space of the heating bottle;

[0009] The air pressure indicating assembly is arranged on the compression assembly and is used for detecting the internal air pressure of the heating bottle.

[0010] Preferably, the compression assembly includes a cover slidably mounted on the inner wall of the heating bottle, and an L-shaped rod is fixed to one side of the heating bottle, and a threaded rotating rod is threadedly screwed to one side of the L-shaped rod.

[0011] Preferably, two groups of limit plates are fixed on the threaded rotating rod, and the two groups of limit plates are located at the upper and lower ends of the L-shaped rod.

[0012] Preferably, a cross rod is fixedly connected to the lower end of the L-shaped rod, and the cross rod passes through the cover and is slidably connected to each other.

[0013] Preferably, the air pressure indicating assembly comprises a sleeve intercommunicationly installed on the upper part of the cover, and a sliding plate is slidably installed on the inner wall of the sleeve, an indicating rod penetrating the top of the sleeve is fixed on the upper end of the sliding plate, and a spring is installed between the top wall of the sleeve and the sliding plate.

[0014] Preferably, the sealing cover is connected to a flow guide tube, a stop valve is installed on the flow guide tube, and a condenser is sheathed on the outside of one side of the flow guide tube.

[0015] Beneficial Effects

[0016] The utility model provides a distillation separation device for tetrahydrofuran polyol copolymer. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The distillation separation device of tetrahydrofuran polyol copolymer is characterized in that the raw materials for producing tetrahydrofuran polyol copolymer are introduced into a heating bottle through an external pipe, and a plurality of groups of electric heating wire tubes distributed in a circular array are connected to a power source at the bottom, so that the raw materials are heated through the inner shell. In this process, the heat preservation sleeve outside the heating bottle plays a heat preservation role, thereby reducing the heat loss inside the heating bottle.

[0018] (2) The distillation and separation device of tetrahydrofuran polyol copolymer drives the sealing cover to move up and down by rotating the threaded rotating rod, thereby adjusting the heating space inside the heating bottle, further reducing the consumption of heat energy, and sliding the sliding piece in the sleeve along the inner wall of the cylinder to compress the spring and drive the indicating rod, and the air pressure value can be understood through the indicating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the installation of the electric heating wire tube of the utility model;

[0022] Figure 4 It is a schematic diagram of the disassembled structure of the air pressure indicating component of the utility model.

[0023] In the figure: 1-base, 2-heating mechanism, 21-heating component, 211-heating bottle, 212-insulation sleeve, 213-inner shell, 214-electric heating wire tube, 22-compression component, 221-L-shaped rod, 222-threaded rotating rod, 223-limiting plate, 224-sealing cover, 225-cross rod, 23-air pressure indicating assembly, 231-sleeve, 232-slide, 233-spring, 234-indicator rod, 3-guide tube, 4-condenser. DETAILED DESCRIPTION

[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 in 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] See also Figure 1-4 The utility model provides a technical solution: a distillation separation device for tetrahydrofuran polyol copolymer, comprising a base 1, a heating mechanism 2 is provided at the upper end of the base 1, and the heating mechanism 2 includes:

[0026] The heating assembly 21 is arranged on the upper part of the base 1, and includes a heating bottle 211 installed on the base 1, the outer part of the heating bottle 211 is sleeved with a heat preservation sleeve 212, the inner wall of the heating bottle 211 is fixed with an inner shell 213, and an electric heating wire tube 214 is installed between the heating bottle 211 and the inner shell 213;

[0027] The compression assembly 22 is disposed on the upper portion of the heating bottle 211 and is used to compress the inner space of the heating bottle 211;

[0028] The air pressure indicating assembly 23 is disposed on the compression assembly 22 and is used to detect the internal air pressure of the heating bottle 211 .

[0029] In this embodiment, the compression assembly 22 includes a sealing cover 224 slidably mounted on the inner wall of the heating bottle 211, and an L-shaped rod 221 is fixed on one side of the heating bottle 211, a threaded rotating rod 222 is threadedly screwed on one side of the L-shaped rod 221, and two groups of limiting plates 223 are fixed on the threaded rotating rod 222, and the two groups of limiting plates 223 are located at the upper and lower ends of the L-shaped rod 221, and a cross rod 225 is fixedly connected to the lower end of the L-shaped rod 221, and the cross rod 225 penetrates the sealing cover 224 and is slidably connected to each other; by rotating the threaded rotating rod 222, the sealing cover 224 is driven to move up and down, thereby adjusting the internal heating space of the heating bottle 211 and further reducing the consumption of heat energy.

[0030] In this embodiment, the air pressure indicating assembly 23 includes a sleeve 231 which is interconnected and installed on the upper part of the cover 224, and a slide 232 is slidably installed on the inner wall of the sleeve 231. An indicating rod 234 which passes through the top of the sleeve 231 is fixed on the upper end of the slide 232. A spring 233 is installed between the top wall of the sleeve 231 and the slide 232. The slide 232 in the sleeve 231 can slide up along the inner wall of the cylinder, squeeze the spring 233, and drive the indicating rod 234, so that the air pressure value can be understood through the indicating rod 234.

[0031] In this embodiment, the cover 224 is connected to a flow guide tube 3, and a stop valve is installed on the flow guide tube 3. A condenser 4 is mounted on the outside of one side of the flow guide tube 3. Steam enters the flow guide tube 3 and is quickly cooled by condensed water flowing into the condenser 4, thereby completing distillation separation.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] During operation, the raw materials for producing tetrahydrofuran polyol copolymer enter the heating bottle 211 through the external pipeline, and the power supply is inserted into the bottom of multiple groups of electric heating wire tubes 214 distributed in a circular array, so that the raw materials are heated through the inner shell 213. In this process, the insulation sleeve 212 outside the heating bottle 211 plays a role of insulation, reducing the heat loss inside the heating bottle 211. At this time, the stop valve on the guide tube 3 is closed, so that the steam generated in the heating bottle 211 is gathered inside the bottle body, and the slide 232 in the sleeve 231 slides along the inner wall of the cylinder, compressing the spring 233 and driving the indicator rod 234. The air pressure value is understood through the indicator rod 234, and the stop valve is opened when a certain critical point is reached, so that the steam enters the guide tube 3 and is quickly cooled by the condensed water flowing into the condenser 4, thereby completing the distillation separation.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distillation separation device for tetrahydrofuran polyol copolymer, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a heating mechanism (2), and the heating mechanism (2) comprises: A heating assembly (21) is arranged on the upper part of the base (1), comprising a heating bottle (211) mounted on the base (1), the outer portion of the heating bottle (211) being sleeved with a heat preservation sleeve (212), an inner shell (213) being fixed to the inner wall of the heating bottle (211), and an electric heating wire tube (214) being installed between the heating bottle (211) and the inner shell (213); A compression assembly (22) is disposed on the upper portion of the heating bottle (211) and is used to compress the internal space of the heating bottle (211); The air pressure indicating component (23) is arranged on the compression component (22) and is used to detect the internal air pressure of the heating bottle (211).

2. The distillation separation device of a tetrahydrofuran polyol copolymer according to claim 1, wherein: The compression assembly (22) comprises a sealing cover (224) slidably mounted on the inner wall of the heating bottle (211), and an L-shaped rod (221) is fixed to one side of the heating bottle (211), and a threaded rotating rod (222) is threadedly screwed to one side of the L-shaped rod (221).

3. The distillation separation device of a tetrahydrofuran polyol copolymer according to claim 2, characterized in that: Two groups of limiting plates (223) are fixed on the threaded rotating rod (222), and the two groups of limiting plates (223) are located at the upper and lower ends of the L-shaped rod (221).

4. The distillation separation device of a tetrahydrofuran polyol copolymer according to claim 2, wherein: The lower end of the L-shaped rod (221) is fixedly connected to a cross rod (225), and the cross rod (225) passes through the cover (224) and is slidably connected to each other.

5. The distillation separation device of a tetrahydrofuran polyol copolymer according to claim 2, characterized in that: The air pressure indicating assembly (23) comprises a sleeve (231) which is intercommunicationally installed on the upper part of the cover (224), and a sliding plate (232) is slidably installed on the inner wall of the sleeve (231), and an indicating rod (234) penetrating the top of the sleeve (231) is fixed to the upper end of the sliding plate (232), and a spring (233) is installed between the top wall of the sleeve (231) and the sliding plate (232).

6. The distillation separation device of a tetrahydrofuran polyol copolymer according to claim 2, characterized in that: The sealing cover (224) is connected to a flow guide pipe (3), a flow stop valve is installed on the flow guide pipe (3), and a condenser pipe (4) is sleeved on the outside of one side of the flow guide pipe (3).

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