Distillation tower for acetic ester production

Abstract

The utility model relates to the technical field of distillation towers, in particular to a distillation tower for acetic ester production. The utility model provides the distillation tower for acetic ester production, which is convenient for quickly draining steam. A distillation tower for acetate production comprises a tower body, a liquid inlet pipe, a steam collecting cover, a flow dividing cover, a fairing and the like, the upper side of the interior of the tower body is connected with the flow dividing cover, the flow dividing cover is located below the liquid inlet pipe in the tower body, the top of the flow dividing cover is connected with the fairing, and the upper end of the fairing is in butt joint with the steam collecting cover. The injected liquid can be uniformly shunted to the heating pipe below through the shunting cover, so that the injected liquid can be quickly heated and distilled by the heating pipe and the heating rod; and through the joint matching effect of the fairing and the flow dividing cover, the generated steam can be collected towards the middle part of the tower body and is upwards drained into the steam collecting cover, and then through the matching effect of the steam discharge pipe and the return pipe, the collected steam can be quickly discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a distillation tower for acetate production. Background Art

[0002] In the production process of acetate, the distillation tower is a key equipment for separating and purifying the reaction products. After the acetate is synthesized, it is usually necessary to remove the unreacted alcohol, acid and by-products such as water and other impurities through distillation operation to obtain the target acetate product with high purity.

[0003] The Chinese patent with the authorization announcement number CN218248558U discloses a distillation tower device, including: a tower body, a heating pipe is fixedly installed in the middle of the inner bottom wall of the tower body, an auger heating plate is fixedly installed on the outer wall of the heating pipe, a spiral liquid baffle plate for restricting liquid is installed on the auger heating plate, a liquid inlet pipe is installed at the top of the outer wall of the tower body, a reflux pipe for condensing and refluxing steam is installed inside the liquid inlet pipe, and a steam pipe with one end extending into the liquid inlet pipe and connected to the reflux pipe is installed at the top of the tower body. Although the device can achieve uniform heating of the added liquid, since the liquid is mainly concentrated on the auger heating plate, the heated liquid is easy to adhere to the inner bottom of the auger heating plate after forming steam, which is easy to block the steam, seriously interfering with the normal upward flow of the steam, and causing the rate of steam discharge to decrease.

[0004] In view of this, it is necessary to improve the defects in the above technical solution and design a distillation tower for acetate production that is convenient for rapid drainage of steam. Utility Model Content

[0005] In order to overcome the shortcomings of existing distillation tower equipment that hinders the steam in the tower body and affects the normal discharge of steam, the technical problem of the utility model is to provide a distillation tower for acetate production that is convenient for rapid drainage of steam.

[0006] A distillation tower for acetate production, comprising a tower body, a fixed sleeve, a liquid inlet pipe, a steam exhaust pipe and a drain valve, wherein the outer wall of the tower body is provided with a plurality of fixed sleeves spaced and staggered in a circumferential direction, a liquid inlet pipe is sleeved between the fixed sleeves, and the upper end of the liquid inlet pipe is connected and communicated with the upper side of the tower body, a steam exhaust pipe is penetrated inside the liquid inlet pipe, and the two ends of the steam exhaust pipe respectively pass through the liquid inlet pipe, the bottom of the tower body is connected and communicated with the drain valve, and further comprises a reflux pipe, a steam collecting hood, a connecting seat, a heat conducting hood, a heating rod, a heating pipe and a flow guide assembly, the top of the tower body is connected with a steam collecting hood, and the upper end of the steam exhaust pipe is connected and communicated with the steam collecting hood, the collecting A reflux pipe is connected and communicated between the top of the steam hood and the steam exhaust pipe, a connecting seat is provided on the lower side of the interior of the tower body, a heat-conducting hood is provided in the middle of the connecting seat, a plurality of heat-conducting holes are provided on the heat-conducting hood at intervals, a heating rod is provided inside the heat-conducting hood, a plurality of heating pipes are mounted between the upper and lower ends of the outer wall of the heat-conducting hood, a flow guide component for guiding and collecting steam upward is provided on the upper side of the interior of the tower body, the flow guide component includes a diverter hood and a fairing, a diverter hood is connected to the upper side of the interior of the tower body, and the diverter hood is located below the liquid inlet pipe in the tower body, a fairing is connected to the top of the diverter hood, and the upper end of the fairing is connected to the steam collecting hood.

[0007] It is particularly preferred that a closed preheating cavity is formed between the splitter cover and the fairing cover and the inner wall of the tower body.

[0008] It is particularly preferred that the fairing is arranged in a conical structure that is narrow at the top and wide at the bottom.

[0009] It is particularly preferred that the fairing is made of a heat-conducting metal material.

[0010] Particularly preferably, the heat-conducting metal material is copper.

[0011] It is particularly preferred that a temperature sensor and a display screen are further included, the connection base is provided with a temperature sensor, the upper side of the outer wall of the tower body is provided with a display screen, and the temperature sensor and the display screen are electrically connected.

[0012] The beneficial effects are as follows: the injected liquid can be evenly diverted to the heating tube below through the diverter hood, which is beneficial for the heating tube and the heating rod to quickly heat and distill the injected liquid; and through the connection and cooperation between the fairing and the diverter hood, the generated steam is gathered to the middle of the tower body and directed upward to the steam collecting hood, and then through the cooperation of the steam discharge pipe and the reflux pipe, the collected steam is quickly discharged, which is beneficial to improve the distillation efficiency of the liquid in the tower body, and avoid the steam after distillation being blocked in the tower body and affecting the normal discharge rate of the steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a top view of the utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model.

[0016] Figure 4 This is a structural separation diagram of the steam collecting hood, the splitter hood and the fairing of the utility model.

[0017] Figure 5 The utility model is a schematic diagram of the connection structure of the connecting seat, the heat conductive cover, the heating rod and the heating tube.

[0018] In the above drawings: 1: tower body, 2: fixing sleeve, 3: liquid inlet pipe, 4: steam discharge pipe, 5: drain valve, 6: reflux pipe, 60: steam collecting hood, 7: connecting seat, 8: heat conductive hood, 80: heat conductive hole, 9: heating rod, 10: heating tube, 11: diverter hood, 12: fairing, 13: temperature sensor, 14: display screen. DETAILED DESCRIPTION

[0019] 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.

[0020] Embodiment 1: The utility model provides a distillation tower for acetate production, see Figure 1-Figure 5As shown, it includes a tower body 1, a fixed sleeve 2, a liquid inlet pipe 3, a steam exhaust pipe 4, a drain valve 5, a reflux pipe 6, a steam collecting cover 60, a connecting seat 7, a heat conductive cover 8, a heat conductive hole 80, a heating rod 9, a heating pipe 10 and a guide assembly. Six fixed sleeves 2 are distributed in a staggered manner along the circumferential direction on the outer wall of the tower body 1. The liquid inlet pipe 3 is sleeved between the six fixed sleeves 2, and the upper end of the liquid inlet pipe 3 is connected and communicated with the upper side of the tower body 1. The steam exhaust pipe 4 is penetrated inside the liquid inlet pipe 3, and the two ends of the steam exhaust pipe 4 are respectively passed through the liquid inlet pipe 3. The liquid inlet pipe 3 and the steam exhaust pipe 4 are spirally distributed on the outside of the tower body 1, which is conducive to the smooth discharge of the steam generated in the tower body 1. The bottom of the tower body 1 is connected and communicated with the drain valve 5. A steam collecting hood 60 is connected to the top of the tower body 1, and the upper end of the steam exhaust pipe 4 is connected and communicated with the steam collecting hood 60, and a reflux pipe 6 is connected and communicated between the top of the steam collecting hood 60 and the steam exhaust pipe 4. A connecting seat 7 is arranged on the lower side of the interior of the tower body 1, and a heat-conducting hood 8 is arranged in the middle of the connecting seat 7. A plurality of heat-conducting holes 80 are arranged on the heat-conducting hood 8 at intervals. A heating rod 9 is arranged inside the heat-conducting hood 8, and the heat-conducting holes 80 are conducive to quickly conducting outward the heat generated by the heating rod 9. Five heating tubes 10 are evenly spaced between the upper and lower ends of the outer wall of the heat-conducting hood 8, and the heating tubes 10 are arranged in a serpentine structure, which is conducive to accelerating the heating of the liquid diverted in the tower body 1, and a flow guide component is arranged on the upper side of the interior of the tower body 1.

[0021] For further information, see Figure 3 and Figure 4 As shown, the flow guide assembly includes a diverter hood 11 and a fairing hood 12. The diverter hood 11 is connected to the upper side of the interior of the tower body 1. The diverter hood 11 is located below the liquid inlet pipe 3 in the tower body 1. The top of the diverter hood 11 is connected to the fairing hood 12, and the upper end of the fairing hood 12 is connected to the steam collecting hood 60, and a closed cavity is formed between the diverter hood 11 and the inner wall of the tower body 1. When the hot steam generated by heating distillation passes through the inner ring of the diverter hood 11 and the fairing 12 in turn and finally reaches the steam collecting hood 60, the heat can be transferred to the diverter hood 11, the fairing 12 and the steam collecting hood 60 respectively, so as to heat the preheating space, which is beneficial to further preheat the liquid that has been preheated for the first time, and is beneficial to improve the utilization efficiency of energy and achieve the purpose of energy saving and environmental protection.

[0022] For further information, see Figure 3 and Figure 4 As shown, the fairing 12 is arranged in a conical structure which is narrow at the top and wide at the bottom, which is beneficial to the upward drainage and collection of the steam generated in the tower body 1, and the fairing 12 is made of a heat-conducting metal material, which is beneficial to the secondary preheating of the preheated liquid, thereby facilitating the purpose of reducing energy consumption, and the heat-conducting metal material is copper, which is beneficial to further improve the heat conduction efficiency, thereby facilitating the further preheating of the preheated liquid.

[0023] When the distillation tower is used, liquid is added to the tower body 1 through the liquid inlet pipe 3. When the liquid flows into the tower body 1, the dispersing effect of the diverter hood 11 is conducive to evenly diverting the added liquid to the heating tube 10 below. After the heating rod 9 and the heating tube 10 are energized, the diverted liquid can be heated, which is conducive to improving the efficiency of heating the liquid, so that the heated liquid can quickly form steam. Furthermore, through the connection and cooperation between the diverter hood 11 and the fairing hood 12, the steam is facilitated to be guided upward from the middle of the tower body 1 and collected in the steam collecting hood 60, and then discharged through the steam exhaust pipe 4. The steam discharged from the steam exhaust pipe 4 can preheat the liquid flowing through the liquid inlet pipe 3, which is conducive to saving energy consumption. Moreover, through the diversion effect of the reflux pipe 6, the steam in the steam collecting hood 60 can be diverted to the steam exhaust pipe 4, which is conducive to accelerating the discharge of steam inside the tower body 1, and thus It is beneficial to improve the efficiency of steam distillation.

[0024] Embodiment 2: Based on Embodiment 1, refer to Figure 1-Figure 4 As shown, a temperature sensor 13 and a display screen 14 are also included. The temperature sensor 13 is arranged on the connecting base 7, and the display screen 14 is arranged on the upper side of the outer wall of the tower body 1, and the temperature sensor 13 and the display screen 14 are electrically connected.

[0025] The temperature sensor 13 can accurately identify the working temperature inside the tower body 1, and then transmit the temperature inside the tower body 1 to the display screen 14 in real time, which is helpful for the operator to accurately control the working temperature inside the tower body 1, so that the distillation process of the liquid can be maintained in the best state.

[0026] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the utility model concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A distillation tower for producing acetic acid ester, comprising a tower body (1), a fixed sleeve (2), a liquid inlet pipe (3), a steam exhaust pipe (4) and a liquid discharge valve (5), wherein the outer wall of the tower body (1) is provided with a plurality of fixed sleeves (2) spaced and staggered in a circumferential direction, a liquid inlet pipe (3) is sleeved between the fixed sleeves (2), and the upper end of the liquid inlet pipe (3) is connected to and communicated with the upper side of the tower body (1), a steam exhaust pipe (4) is penetrated inside the liquid inlet pipe (3), and the two ends of the steam exhaust pipe (4) respectively pass through the liquid inlet pipe (3), and the bottom of the tower body (1) is connected to and communicated with the liquid discharge valve (5), wherein the liquid inlet pipe (3) is provided with a steam exhaust pipe (4 ... steam exhaust pipe (4) is provided with a steam exhaust pipe (4) at the bottom of the tower body (1), wherein the steam exhaust pipe (4) is provided with a steam exhaust pipe (4), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4) at the bottom of the tower body (1), wherein the steam exhaust pipe (4) is provided with a steam exhaust pipe (4), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4) at the bottom of the tower body (1), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4), wherein the steam exhaust pipe (4) is provided with a steam exhaust pipe (4), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4) at the bottom of the tower body (1), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4), and the steam exhaust pipe (4) is provided with a steam exhaust pipe (4) The tower body (1) further comprises a reflux pipe (6), a steam collecting hood (60), a connecting seat (7), a heat-conducting hood (8), a heating rod (9), a heating pipe (10) and a flow guide assembly. The top of the tower body (1) is connected to the steam collecting hood (60), and the upper end of the steam discharge pipe (4) is connected to and communicated with the steam collecting hood (60). The top of the steam collecting hood (60) and the steam discharge pipe (4) are connected to and communicated with the reflux pipe (6). A connecting seat (7) is provided on the lower side of the interior of the tower body (1). A heat-conducting hood (8) is provided in the middle of the connecting seat (7). A plurality of heat-conducting holes (80) are provided on the heat-conducting hood (8) at intervals. A heating rod (9) is arranged inside the heat-conducting hood (8); a plurality of heating tubes (10) are mounted between the upper and lower ends of the outer wall of the heat-conducting hood (8); a flow guide assembly for guiding and collecting steam upward is arranged on the upper side of the interior of the tower body (1); the flow guide assembly comprises a flow divider (11) and a flow fairing (12); the flow divider (11) is connected to the upper side of the interior of the tower body (1), and the flow divider (11) is located below the liquid inlet pipe (3) in the tower body (1); the top of the flow divider (11) is connected to the flow fairing (12), and the upper end of the flow fairing (12) is connected to the steam collecting hood (60).

2. A distillation tower for producing acetate according to claim 1, characterized in that: A closed preheating cavity is formed between the splitter cover (11) and the fairing cover (12) and the inner wall of the tower body (1).

3. A distillation tower for producing acetate according to claim 1, characterized in that: The fairing (12) is arranged in a conical structure which is narrow at the top and wide at the bottom.

4. A distillation tower for producing acetic acid ester according to claim 3, characterized in that: The fairing (12) is made of a heat-conducting metal material.

5. A distillation tower for producing acetic acid ester according to claim 4, characterized in that: The heat-conducting metal material is copper.

6. A distillation tower for producing acetic acid ester according to claim 1, characterized in that: It also includes a temperature sensor (13) and a display screen (14); the temperature sensor (13) is arranged on the connection seat (7); the display screen (14) is arranged on the upper side of the outer wall of the tower body (1); and the temperature sensor (13) and the display screen (14) are electrically connected.

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