Temperature control structure of TGIC (triglycidyl isocyanurate) reaction kettle

Abstract

The utility model discloses a temperature control structure of a TGIC (triglycidyl isocyanurate) reaction kettle, which relates to the technical field of reaction kettles and comprises a reaction kettle component, a temperature control component and an auxiliary wall scraping component, the reaction kettle component consists of a kettle body, a motor, a stirring shaft and stirring blades, and the temperature control component is used for heating or cooling raw materials in the kettle body; the temperature control assembly comprises a cooling ring pipe, a heating wave ring pipe, a liquid inlet connecting pipe, a liquid outlet connecting pipe and a heat exchange circulating pipe; the auxiliary wall scraping assembly is used for performing wall scraping operation on the inner part of the kettle body and the outer pipe wall of the heat exchange circulating pipe. According to the reaction kettle, temperature control in the kettle body can be realized by arranging the temperature control assembly, compared with a traditional outer interlayer heat exchange structure, the temperature control assembly is arranged in the kettle body, the contact area between the heat exchange circulating pipes and raw materials is larger, the heat exchange efficiency is higher, meanwhile, the heat exchange circulating pipes which are annularly distributed can realize uniform heat exchange with the raw materials, and the heat exchange efficiency is improved. And uneven internal and external temperatures are avoided.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a TGIC reaction vessel temperature control structure. Background Technology

[0002] The TGIC reactor is a key piece of equipment used in the production of triglycidyl isocyanate (TGIC). The production process of TGIC is as follows:

[0003] First, a metered amount of epichlorohydrin is pumped into the synthesis reactor, along with cyanuric acid and a catalyst. After sealing, the reactor is heated to 90°C for a ring-opening reaction for 1 hour, then heated to 105°C and maintained for 2 hours to complete the ring-closing reaction. The reaction mixture is then cooled, and caustic soda flakes are slowly added to initiate a cyclization reaction. The temperature is controlled by circulating cooling water through a jacket. After the reaction is complete, the reactor is cooled and filtered to separate the salt layer and the oil layer. The oil layer is distilled to recover epichlorohydrin, and the remaining crude TGIC is further purified.

[0004] In the synthesis of TGIC (triglycidyl isocyanurate), reactor temperature control is a crucial step in ensuring product quality, safety, and production efficiency. Most existing TGIC reactors employ jacketed heat exchange, which suffers from uneven temperature distribution within the material (e.g., higher temperatures near the heat transfer surface and lower temperatures at the center). Therefore, this paper proposes a temperature control structure for a TGIC reactor. Utility Model Content

[0005] The purpose of this invention is to provide a temperature control structure for a TGIC reactor in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a TGIC reactor temperature control structure, comprising a reactor assembly consisting of a reactor body, a motor, a stirring shaft, and stirring blades. The motor is fixedly installed at the top center of the reactor body, the stirring shaft is fixed at the motor output end and extends into the reactor body, the stirring blades are fixed on the outside of the stirring shaft, and a temperature control component is provided on the inner side of the reactor body. The temperature control component is used to heat or cool the raw materials inside the reactor body.

[0007] The temperature control component includes a cooling ring pipe, a heating wave ring pipe, a liquid inlet connection pipe, a liquid outlet connection pipe, and a heat exchange circulation pipe;

[0008] The cooling ring pipe and the heating wave ring pipe are arranged vertically along the inside of the vessel body. The two liquid inlet connection pipes and the two liquid outlet connection pipes are respectively fixed on both sides of the cooling ring pipe and the heating wave ring pipe and extend through to the outside of the vessel body.

[0009] The heat exchange circulation pipe is fixed to the bottom of the cooling ring pipe and the heating wave ring pipe, and multiple heat exchange circulation pipes are provided. The multiple heat exchange circulation pipes at the bottom of the cooling ring pipe and the multiple heat exchange circulation pipes at the bottom of the heating wave ring pipe are distributed alternately along the circumference.

[0010] A cooling pipeline is formed by an inlet connection pipe, a cooling ring pipe, a heat exchange circulation pipe, and an outlet connection pipe.

[0011] The heating pipeline is composed of another liquid inlet connection pipe, a heating corrugated ring pipe, a heat exchange circulation pipe, and another liquid outlet connection pipe.

[0012] The vessel body is also equipped with an auxiliary wall scraping component, which is used to scrape the inside of the vessel body and the outer wall of the heat exchange circulation tube.

[0013] As a further embodiment of this utility model: the cooling ring pipe and the heating wave ring pipe are both composed of an inlet C-shaped ring pipe and an outlet C-shaped ring pipe, and the inlet C-shaped ring pipe and the outlet C-shaped ring pipe are fitted together and fixedly combined to form a ring structure.

[0014] The inlet connection pipe and the outlet connection pipe are respectively connected to the inlet C-type ring pipe and the outlet C-type ring pipe for conduction;

[0015] A vertical baffle is fixed in the middle of the inner side of the heat exchange circulation tube. A notch is opened at the bottom of the vertical baffle. The two ports at the top of the heat exchange circulation tube are respectively connected to the liquid inlet C-type ring pipe and the liquid outlet C-type ring pipe to realize the circulation flow channel of the heat exchange medium.

[0016] As a further improvement of this utility model, the heat exchange circulation pipes on the heating wave ring pipe and the heat exchange circulation pipes on the cooling ring pipe have the same distribution trajectory diameter.

[0017] As a further embodiment of this utility model: the auxiliary wall scraping assembly includes an annular scraper, a sleeve hole, a lifting rod, and an electric push rod;

[0018] The sleeve is provided with multiple holes, which match the sum of the number of heat exchange circulation tubes. The multiple sleeve holes are evenly opened in a ring on the top of the annular scraper and completely penetrate to the bottom of the annular scraper. The annular scraper is distributed inside the vessel and is sleeved on the outside of the multiple heat exchange circulation tubes through the sleeve holes.

[0019] The lifting rod is symmetrically fixed to the top of the annular scraper and extends through the vessel body to the top of the vessel body. The electric push rod is symmetrically fixed to the outside of the vessel body by a bracket. The output end of the electric push rod is fixedly connected to the top of the lifting rod by a connector. The annular scraper is driven to move up and down by the electric push rod to scrape the outer wall of the heat exchange circulation tube.

[0020] As a further improvement of this utility model: the outer wall of the annular scraper is fitted to the inner wall of the vessel, and the top of the annular scraper is provided with a number of annularly distributed through slots.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Temperature control inside the vessel can be achieved by setting a temperature control component. Compared with the traditional external jacket heat exchange structure, by embedding the temperature control component inside the vessel, the contact area between the heat exchange circulation pipe and the raw material is larger and the heat exchange efficiency is faster. At the same time, the annularly distributed heat exchange circulation pipe can achieve uniform heat exchange with the raw material and avoid uneven internal and external temperatures. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 3 This is a cross-sectional exploded view of the present invention;

[0026] Figure 4 This is a disassembled schematic diagram of the temperature control component of this utility model;

[0027] Figure 5 This is a cross-sectional view of the heating wave ring pipe and heat exchange circulation pipe of this utility model.

[0028] In the diagram: 1. Reactor assembly; 101. Reactor body; 102. Motor; 103. Stirring shaft; 104. Stirring blades; 2. Auxiliary wall scraping assembly; 201. Annular scraper; 202. Sleeve hole; 203. Through slot; 204. Lifting rod; 205. Electric push rod; 3. Temperature control assembly; 301a. Cooling ring pipe; 301b. Heating wave ring pipe; 3011. Liquid inlet C-type ring pipe; 3012. Liquid outlet C-type ring pipe; 302. Liquid inlet connecting pipe; 303. Liquid outlet connecting pipe; 304. Heat exchange circulation pipe; 304. Vertical partition; 306. Notched groove. Detailed Implementation

[0029] 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 protection scope of the present utility model.

[0030] Please see Figures 1-5In this embodiment of the present invention, a temperature control structure for a TGIC reactor includes a reactor assembly 1 consisting of a reactor body 101, a motor 102, a stirring shaft 103, and stirring blades 104. The motor 102 is fixedly installed at the top center of the reactor body 101. The stirring shaft 103 is fixed to the output end of the motor 102 and extends into the interior of the reactor body 101. The stirring blades 104 are fixed to the outside of the stirring shaft 103. A temperature control assembly 3 is provided on the inner side of the reactor body 101. The temperature control assembly 3 is used to heat or cool the raw materials inside the reactor body 101.

[0031] The temperature control component 3 includes a cooling ring pipe 301a, a heating wave ring pipe 301b, a liquid inlet connection pipe 302, a liquid outlet connection pipe 303, and a heat exchange circulation pipe 304.

[0032] Cooling ring pipe 301a and heating wave ring pipe 301b are arranged vertically along the inner side of the vessel body 101. Two liquid inlet connecting pipes 302 and two liquid outlet connecting pipes 303 are fixed on both sides of cooling ring pipe 301a and heating wave ring pipe 301b and extend through to the outside of vessel body 101.

[0033] The heat exchange circulation pipe 304 is fixed to the bottom of the cooling ring pipe 301a and the heating wave ring pipe 301b, and multiple heat exchange circulation pipes 304 are provided. The multiple heat exchange circulation pipes 304 at the bottom of the cooling ring pipe 301a and the multiple heat exchange circulation pipes 304 at the bottom of the heating wave ring pipe 301b are distributed alternately along the circumference.

[0034] A cooling pipeline is formed by an inlet connection pipe 302, a cooling ring pipe 301a, a heat exchange circulation pipe 304, and an outlet connection pipe 303.

[0035] The heating pipeline is composed of another liquid inlet connection pipe 302, a heating corrugated ring pipe 301b, a heat exchange circulation pipe 304, and a liquid outlet connection pipe 303.

[0036] An auxiliary wall scraping assembly 2 is also provided inside the vessel body 101. The auxiliary wall scraping assembly 2 is used to scrape the inside of the vessel body 101 and the outer wall of the heat exchange circulation pipe 304.

[0037] The cooling ring pipe 301a and the heating wave ring pipe 301b are both composed of an inlet C-type ring pipe 3011 and an outlet C-type ring pipe 3012. The inlet C-type ring pipe 3011 and the outlet C-type ring pipe 3012 are attached and fixed together to form a ring structure.

[0038] The inlet connecting pipe 302 and the outlet connecting pipe 303 are respectively connected to the inlet C-type ring pipe 3011 and the outlet C-type ring pipe 3012 for conduction;

[0039] A vertical partition 305 is fixed in the middle of the inner side of the heat exchange circulation pipe 304. A notch 306 is opened at the bottom of the vertical partition 305. The two ports at the top of the heat exchange circulation pipe 304 are connected to the liquid inlet C-type ring pipe 3011 and the liquid outlet C-type ring pipe 3012 respectively to realize the circulation flow channel of the heat exchange medium.

[0040] In this embodiment, it should be noted that the liquid inlet connection pipe 302 and liquid outlet connection pipe 303 corresponding to the cooling ring pipe 301a and the heating wave ring pipe 301b do not contact or interfere with each other during TGIC synthesis.

[0041] The heating medium enters the inlet C-type ring pipe 3011 (heating corrugated ring pipe 301b) through the inlet connection pipe 302 corresponding to the heating corrugated ring pipe 301b, and then flows into the interior of multiple heat exchange circulation pipes 304. It flows downward along the inner cavity of the heat exchange circulation pipe 304 to the notch groove 306, and then flows upward through the notch groove 306 to the interior of the outlet C-type ring pipe 3012 (heating corrugated ring pipe 301b). Then it is discharged through the outlet connection pipe 303 corresponding to the heating corrugated ring pipe 301b. During this process, the heating medium flowing up and down along the inner cavity of the heat exchange circulation pipe 304 can heat the raw materials inside the vessel body 101.

[0042] In addition, the cooling medium enters the inlet C-type ring pipe 3011 (cooling ring pipe 301a) through the liquid inlet connection pipe 302 corresponding to the cooling ring pipe 301a, and then flows into the interior of multiple heat exchange circulation pipes 304. It flows down along the inner cavity of the heat exchange circulation pipe 304 to the notch groove 306, and then flows up through the notch groove 306 to the interior of the outlet C-type ring pipe 3012 (cooling ring pipe 301a). Then it is discharged through the liquid outlet connection pipe 303 corresponding to the cooling ring pipe 301a. During this process, the cooling medium flowing up and down along the inner cavity of the heat exchange circulation pipe 304 can cool the raw materials inside the vessel body 101.

[0043] Temperature control inside the vessel body 101 can be achieved through the cooperation of the above components. Compared with the traditional external jacket heat exchange structure, by embedding the temperature control component 3 inside the vessel body 101, the contact area between its heat exchange circulation pipe 304 and the raw material is larger and the heat exchange efficiency is faster. At the same time, the annularly distributed heat exchange circulation pipe 304 can achieve uniform heat exchange with the raw material and avoid uneven internal and external temperatures.

[0044] Please refer to this carefully. Figures 2-4 The heat exchange circulation pipe 304 on the heating wave ring pipe 301b and the heat exchange circulation pipe 304 on the cooling ring pipe 301a have the same distribution trajectory diameter.

[0045] In this embodiment: This structure allows the heat exchange areas for heating and cooling to be on the same annular track, thereby ensuring that the uniformity of heat exchange between cooling and heating remains consistent.

[0046] Please refer to this carefully. Figures 1-4 The auxiliary wall scraping assembly 2 includes an annular scraper 201, a sleeve hole 202, a lifting rod 204, and an electric push rod 205.

[0047] Multiple sleeve holes 202 are provided and match the sum of the number of heat exchange circulation tubes 304. Multiple sleeve holes 202 are evenly opened in a ring on the top of the annular scraper 201 and completely penetrate to the bottom of the annular scraper 201. The annular scraper 201 is distributed on the inner side of the vessel body 101 and is sleeved on the outer side of multiple heat exchange circulation tubes 304 through the sleeve holes 202.

[0048] The lifting rod 204 is symmetrically fixed to the top of the annular scraper 201 and passes through the vessel body 101 to the top of the vessel body 101. The electric push rod 205 is symmetrically fixed to the outside of the vessel body 101 through the bracket. The output end of the electric push rod 205 is fixedly connected to the top of the lifting rod 204 through the connector. The annular scraper 201 is driven to move up and down by the electric push rod 205 to scrape the outer wall of the heat exchange circulation tube 304.

[0049] The outer wall of the annular scraper 201 is in contact with the inner wall of the vessel body 101, and the top of the annular scraper 201 is provided with several annularly distributed through slots 203.

[0050] In this embodiment, it should be noted that the top of the vessel body 101 is also provided with corresponding inlet, outlet, monitoring port and other structures. The inlet extends into the interior of the vessel body 101 and passes through the middle area of ​​the cooling ring pipe 301a and the heating wave ring pipe 301b in sequence, in order to prevent the raw material from adhering to the cooling ring pipe 301a and the heating wave ring pipe 301b during feeding.

[0051] When the raw materials are stirred by the stirring blades 104 driven by the motor 102, the electric push rod 205 can be started simultaneously in the middle of the stirring and mixing process. The electric push rod 205 drives the annular scraper 201 to move up and down to scrape the outer wall of the heat exchange circulation pipe 304 and the inner wall of the vessel 101, so as to avoid the raw materials from adhering to the outer wall of the heat exchange circulation pipe 304 and the vessel 101. At the same time, the annular scraper 201 moving up and down can also perform vertical stirring of the raw materials. Its through slot 203 is used to supply the flow of the raw material solution, which not only avoids the raw materials from remaining on the upper surface of the annular scraper 201, but also makes the raw material solution mixed, further improving the raw material mixing efficiency.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A TGIC reactor temperature control structure, comprising a reactor assembly (1) consisting of a reactor body (101), a motor (102), a stirring shaft (103), and stirring blades (104), wherein the motor (102) is fixedly installed at the top center of the reactor body (101), the stirring shaft (103) is fixed to the output end of the motor (102) and extends into the interior of the reactor body (101), and the stirring blades (104) are fixed to the outside of the stirring shaft (103), characterized in that, A temperature control component (3) is provided on the inner side of the vessel body (101), and the temperature control component (3) is used to heat or cool the raw materials inside the vessel body (101). The temperature control component (3) includes a cooling ring pipe (301a), a heating wave ring pipe (301b), a liquid inlet connection pipe (302), a liquid outlet connection pipe (303), and a heat exchange circulation pipe (304). The cooling ring pipe (301a) and the heating wave ring pipe (301b) are arranged vertically on the inner side of the vessel body (101). The two liquid inlet connecting pipes (302) and the two liquid outlet connecting pipes (303) are respectively fixed on both sides of the cooling ring pipe (301a) and the heating wave ring pipe (301b) and extend to the outside of the vessel body (101). The heat exchange circulation pipe (304) is fixed to the bottom of the cooling ring pipe (301a) and the heating wave ring pipe (301b), and multiple heat exchange circulation pipes (304) are provided. The multiple heat exchange circulation pipes (304) at the bottom of the cooling ring pipe (301a) and the multiple heat exchange circulation pipes (304) at the bottom of the heating wave ring pipe (301b) are distributed alternately along the circumference. The cooling pipeline is composed of an inlet connection pipe (302), a cooling ring pipe (301a), a heat exchange circulation pipe (304), and an outlet connection pipe (303); The heating pipeline is formed by another liquid inlet connection pipe (302), a heating corrugated ring pipe (301b), a heat exchange circulation pipe (304), and another liquid outlet connection pipe (303); The vessel body (101) is also provided with an auxiliary wall scraping assembly (2), which is used to scrape the inside of the vessel body (101) and the outer wall of the heat exchange circulation pipe (304).

2. The temperature control structure for a TGIC reactor according to claim 1, characterized in that, The cooling ring pipe (301a) and the heating wave ring pipe (301b) are both composed of an inlet C-shaped ring pipe (3011) and an outlet C-shaped ring pipe (3012). The inlet C-shaped ring pipe (3011) and the outlet C-shaped ring pipe (3012) are fitted together and fixed in an annular structure. The inlet connecting pipe (302) and the outlet connecting pipe (303) are respectively connected to the inlet C-type ring pipe (3011) and the outlet C-type ring pipe (3012) for conduction; A vertical partition (305) is fixed in the middle of the inner side of the heat exchange circulation pipe (304). A notch (306) is opened at the bottom of the vertical partition (305). The two ports at the top of the heat exchange circulation pipe (304) are connected to the liquid inlet C-type ring pipe (3011) and the liquid outlet C-type ring pipe (3012) respectively to realize the circulation flow channel of the heat exchange medium.

3. The temperature control structure for a TGIC reactor according to claim 1, characterized in that, The heat exchange circulation tubes (304) on the heating wave ring tube (301b) and the heat exchange circulation tubes (304) on the cooling ring tube (301a) have the same distribution trajectory diameter.

4. The temperature control structure for a TGIC reactor according to claim 1, characterized in that, The auxiliary wall scraping assembly (2) includes an annular scraper (201), a sleeve hole (202), a lifting rod (204), and an electric push rod (205). The sleeve (202) is provided in multiple ways and matches the sum of the number of heat exchange circulation tubes (304). The multiple sleeves (202) are evenly opened in a ring on the top of the annular scraper (201) and completely penetrate to the bottom of the annular scraper (201). The annular scraper (201) is distributed on the inner side of the vessel body (101) and is sleeved on the outer side of the multiple heat exchange circulation tubes (304) through the sleeves (202). The lifting rod (204) is symmetrically fixed to the top of the annular scraper (201) and extends through the vessel body (101) to the top of the vessel body (101). The electric push rod (205) is symmetrically fixed to the outside of the vessel body (101) by a bracket. The output end of the electric push rod (205) is fixedly connected to the top of the lifting rod (204) by a connector. The annular scraper (201) is driven to move up and down by the electric push rod (205) to scrape the outer wall of the heat exchange circulation tube (304).

5. The temperature control structure for a TGIC reactor according to claim 4, characterized in that, The outer wall of the annular scraper (201) is in contact with the inner wall of the vessel body (101), and the top of the annular scraper (201) is provided with a number of annularly distributed through slots (203).

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