Rectifying tower for separating chlorobenzonitrile chloride liquid

Abstract

The utility model relates to the technical field of rectifying equipment, and discloses a rectifying tower for separating chlorobenzonitrile chloride liquid, which comprises a tower body and a mounting box, the mounting box is connected to the upper end of the tower body, an annular groove is arranged inside the tower body, a heating wire is sleeved inside the annular groove, a stirring mechanism is arranged inside the tower body, and the stirring mechanism is connected with the mounting box. The stirring device is used for stirring the interior of the tower body to uniformly heat the interior of the tower body; according to the rectifying tower for separating the o-chlorobenzonitrile chloride liquid, a rack drives a gear to do reciprocating autorotation motion, the gear drives a stirring rod to rotate, the stirring rod drives stirring blades to rotate, raw materials in the tower body can be stirred, and meanwhile, when the stirring rod rotates, a reciprocating lead screw is driven to rotate; the reciprocating screw rod continuously moves up and down under the action of the screw rod nut, the stirring rod moves up and down while rotating, so that the raw materials are heated more uniformly, and the stirring blades rotate to drive the scraping plate to scrape impurities attached to the inner wall of the tower body.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a distillation tower used for separating o-chlorobenzonitrile chlorinated liquid. Background Art

[0002] o-Chlorobenzonitrile is an organic synthesis intermediate. It is primarily used in the synthesis of the dye intermediate 2-cyano-4-nitroaniline and in the pharmaceutical industry for the synthesis of new antimalarial drugs such as nitroquine. Currently, there are six different routes for the synthesis of o-chlorobenzonitrile (CBN): o-chlorotoluene, o-chlorobenzaldehyde oxime, o-chlorobenzaldehyde, o-chlorobenzoic acid, o-chloroaniline, and o-chlorobenzylamine.

[0003] The Chinese utility model patent with the authorization announcement number "CN217745778U" is specifically "a distillation tower for separating chlorinated o-chlorobenzonitrile liquid". It records that the raw materials are introduced into the tower body through the feed pipe, and the combustion materials are introduced into the insulation tank through the feeding port. The high-temperature flue gas from the combustion enters the interior of the built-in tube, and heat exchange is achieved through the built-in tube to initially heat the raw materials. The high-temperature flue gas inside the built-in tube enters the interior of the coil, and the coil contacts the middle of the raw materials at the bottom end of the tower body to achieve multi-point synchronous heating and enhance heating uniformity.

[0004] The above-mentioned distillation tower for separating o-chlorobenzonitrile chlorinated liquid is not convenient for quickly heating the raw materials during use. The large temperature difference between the inside and outside causes low distillation efficiency, which affects production efficiency. In addition, during the use of the distillation tower, due to reasons such as medium crystallization or polymer formation, many solid impurities will adhere to or accumulate inside the distillation tower. These impurities need to be scraped to prevent a decrease in the heat transfer efficiency of the distillation tower and affect subsequent processing. Utility Model Content

[0005] In view of the deficiencies of the existing technology, the utility model provides a distillation tower for separating o-chlorobenzonitrile chlorinated liquid, which solves the problem that the heat resistance of the existing distillation tower needs to be further improved.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a distillation tower for separating o-chlorobenzonitrile chlorinated liquid, comprising a tower body and an installation box, wherein the installation box is connected to the upper end of the tower body, an annular groove is provided inside the tower body, a heating wire is sleeved inside the annular groove, and a stirring mechanism is provided inside the tower body for stirring the interior of the tower body so that the interior of the tower body is heated evenly;

[0007] The stirring mechanism includes a connecting rod, a rack, a gear, a square rod, a stirring rod, and a stirring blade. One side of the rack is connected to one side of the connecting rod, and the side of the connecting rod facing away from the rack is connected to the turntable. One side of the turntable is connected to a motor. The rack is connected to the left and right sides of the installation box. A gear is installed inside the installation box, and the outside of the gear is connected to one side of the rack. The stirring rod is connected to the inside of the tower body, the upper end of the stirring rod is connected to the lower end of the square rod, and the outside of the square rod is connected to the inside of the gear. The stirring blades are arranged in three groups, and the stirring blades are staggered on the rod wall of the stirring rod.

[0008] As a preferred solution of the distillation tower for separating o-chlorobenzonitrile chlorinated liquid described in the utility model, wherein: the lower end of the stirring rod is connected to a reciprocating screw, the inner bottom end of the tower body is connected to a screw nut, and the inside of the screw nut is connected to the outside of the reciprocating screw.

[0009] As a preferred solution of the distillation tower for separating o-chlorobenzonitrile chlorinated liquid described in the utility model, two limit plates are connected to the left and right sides of the interior of the installation box, and the two limit plates are installed on both sides above the gear.

[0010] As a preferred solution of the distillation tower for separating o-chlorobenzonitrile chlorinated liquid described in the utility model, a groove is provided on one side of the stirring blade, a spring is connected to the inside of the groove, a scraper is connected to the away end of the spring, and the away side of the scraper is in contact with the inner wall of the tower body.

[0011] As a preferred embodiment of the distillation tower for separating o-chlorobenzonitrile chlorinated liquid described in the utility model, the upper left end of the tower body is connected to a feed port, the lower left end of the tower body is connected to a discharge port, and the outside of the discharge port is connected to a solenoid valve.

[0012] As a preferred solution of the distillation tower for separating o-chlorobenzonitrile chlorinated liquid described in the utility model, three groups of support columns are connected to the lower end of the tower body, and the lower ends of the three groups of support columns are all connected to anti-slip pads.

[0013] Beneficial effects of the utility model:

[0014] 1. The rack drives the gear to rotate back and forth, the gear drives the stirring rod to rotate, and the stirring rod drives the stirring blade to rotate, which can stir the raw materials inside the tower body. At the same time, the stirring rod drives the reciprocating screw to rotate when it rotates. The reciprocating screw continuously moves up and down under the action of the screw nut. The stirring rod moves up and down while rotating, so that the raw materials are heated more evenly.

[0015] 2. The stirring blade rotates to drive the scraper to scrape off the impurities attached to the inner wall of the tower body, preventing the impurities from adhering to the inner wall for a long time, thereby affecting the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 For the utility model Figure 2 A in the figure shows the enlarged structural diagram;

[0020] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in FIG.

[0021] Explanation of the accompanying symbols: 1. Tower body; 2. Mounting box; 3. Heating wire; 4. Motor; 5. Turntable; 6. Connecting rod; 601. Rack; 602. Gear; 603. Square rod; 604. Stirring rod; 605. Stirring blade; 7. Groove; 701. Spring; 702. Scraper; 8. Screw nut; 9. Reciprocating screw; 10. Feed port; 11. Discharge port; 12. Support column; 13. Anti-slip pad; 14. Limit plate. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a distillation tower for separating o-chlorobenzonitrile chlorinated liquid, comprising a tower body 1 and an installation box 2, wherein the installation box 2 is fixedly connected to the upper end of the tower body 1, an annular groove is provided inside the tower body 1, a heating wire 3 is sleeved inside the annular groove, and a stirring mechanism is provided inside the tower body 1 for stirring the interior of the tower body 1 so that the interior of the tower body 1 is heated evenly;

[0025] The stirring mechanism includes a connecting rod 6, a rack 601, a gear 602, a square rod 603, a stirring rod 604, and a stirring blade 605. One side of the rack 601 is rotatably connected to one side of the connecting rod 6, and the side of the connecting rod 6 facing away from the rack 601 is rotatably connected to the turntable 5. One side of the turntable 5 is fixedly connected to the motor 4. The rack 601 is slidably connected to the left and right sides of the installation box 2. The interior of the installation box 2 is installed with a gear 602, and the outside of the gear 602 is meshed with one side of the rack 601. The stirring rod 604 is rotatably connected to the interior of the tower body 1. The upper end of the stirring rod 604 is fixedly connected to the lower end of the square rod 603, and the outside of the square rod 603 is slidably connected to the inside of the gear 602. The stirring blade 605 is set to three groups, and the stirring blades 605 are staggered on the rod wall of the stirring rod 604. The stirring blade 605 stirs back and forth, which can make the internal raw materials have a certain convection effect, so that the raw materials are fully stirred, thereby accelerating the heat collection efficiency.

[0026] The lower end of the stirring rod 604 is fixedly connected to a reciprocating screw 9, and the inner bottom end of the tower body 1 is fixedly connected to a screw nut 8. The inner part of the screw nut 8 is meshed with the outer part of the reciprocating screw 9. When the stirring rod 604 rotates, the reciprocating screw 9 is driven to rotate. The reciprocating screw 9 continuously moves up and down under the action of the screw nut 8, so that the stirring rod 604 rotates and moves up and down at the same time, stirring the raw materials and improving the heat collection effect.

[0027] Two limit plates 14 are fixedly connected to the left and right sides of the interior of the installation box 2, and the two limit plates 14 are installed on both sides above the gear 602. Under the action of the limit plates 14, the gear 602 is always engaged with the rack 601, and at the same time, due to the action of the square rod 603, it can maintain its own rotation.

[0028] During use, the raw materials are poured in through the feed port 10, the heating wire 3 is started, the inside of the tower body 1 is heated, the motor 4 is started to drive the turntable 5 to rotate, the turntable 5 drives the connecting rod 6 to rotate, thereby driving the rack 601 to move, the rack 601 moves left and right under the limit of the installation box 2, the rack 601 drives the gear 602 to rotate back and forth, the gear 602 drives the stirring rod 604 to rotate, the stirring rod 604 drives the stirring blade 605 to rotate, and the raw materials inside the tower body 1 can be stirred. At the same time, when the stirring rod 604 rotates, it drives the reciprocating screw 9 to rotate, and the reciprocating screw 9 continuously moves up and down under the action of the screw nut 8. The stirring rod 604 rotates and moves up and down, so that the raw materials are heated more evenly.

[0029] Example 2

[0030] Reference Figure 2-4, which is the second embodiment of the present utility model. This embodiment is different from the first embodiment in that: a groove 7 is provided on one side of the stirring blade 605, and a spring 701 is fixedly connected to the inside of the groove 7. The end of the spring 701 facing away is fixedly connected to a scraper 702. The side of the scraper 702 facing away is in contact with the inner wall of the tower body 1, which can scrape off impurities attached to the inside of the tower body 1, preventing excessive impurities from reducing the heating effect of the device.

[0031] The upper left end of the tower body 1 is fixedly connected to a feed port 10, the lower left end of the tower body 1 is fixedly connected to a discharge port 11, and the outside of the discharge port 11 is fixedly connected to a solenoid valve. The raw materials are poured into the feed port 10, and the separated raw materials are discharged from the discharge port 11.

[0032] The lower end of the tower body 1 is fixedly connected with three groups of support columns 12, and the lower ends of the three groups of support columns 12 are fixedly connected with anti-skid pads 13. The support columns 12 support the tower body 1, and the anti-skid pads 13 make the device more stable.

[0033] During use, the stirring blade 605 rotates, driving the scraper 702 to scrape off impurities attached to the inner wall of the tower body 1, preventing impurities from adhering to the inner wall for a long time and affecting the heating efficiency. Under the action of the spring 701, the scraper 702 is always in contact with the inner wall of the tower body 1, preventing the scraper 702 from excessive wear and improving its service life.

[0034] The remaining structures are the same as those of Example 1.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid, comprising a tower body (1) and an installation box (2), characterized in that: The installation box (2) is connected to the upper end of the tower body (1); an annular groove is provided inside the tower body (1); a heating wire (3) is sleeved inside the annular groove; a stirring mechanism is provided inside the tower body (1) for stirring the inside of the tower body (1) so that the inside of the tower body (1) is heated evenly; The stirring mechanism comprises a connecting rod (6), a rack (601), a gear (602), a square rod (603), a stirring rod (604), and a stirring blade (605); one side of the rack (601) is connected to one side of the connecting rod (6); the side of the connecting rod (6) facing away from the rack (601) is connected to a turntable (5); one side of the turntable (5) is connected to a motor (4); the rack (601) is connected to the left and right sides of the installation box (2); the installation box (2 ) is installed inside the tower body (1), the outside of the gear (602) is connected to one side of the rack (601), the stirring rod (604) is connected to the inside of the tower body (1), the upper end of the stirring rod (604) is connected to the lower end of the square rod (603), the outside of the square rod (603) is connected to the inside of the gear (602), and the stirring blades (605) are arranged in three groups, and the stirring blades (605) are staggered and distributed on the rod wall of the stirring rod (604).

2. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid according to claim 1, characterized in that: The lower end of the stirring rod (604) is connected to a reciprocating screw rod (9), the inner bottom end of the tower body (1) is connected to a screw nut (8), and the inside of the screw nut (8) is connected to the outside of the reciprocating screw rod (9).

3. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid according to claim 1, characterized in that: Two limiting plates (14) are connected to the left and right sides of the interior of the installation box (2), and the two limiting plates (14) are installed on both sides above the gear (602).

4. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid according to claim 1, characterized in that: A groove (7) is provided on one side of the stirring blade (605), a spring (701) is connected to the interior of the groove (7), a scraper (702) is connected to the opposite end of the spring (701), and the opposite side of the scraper (702) is in contact with the inner wall of the tower body (1).

5. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid according to claim 1, characterized in that: The upper left end of the tower body (1) is connected to a feed port (10), the lower left end of the tower body (1) is connected to a discharge port (11), and the outside of the discharge port (11) is connected to a solenoid valve.

6. A distillation tower for separating o-chlorobenzonitrile chlorinated liquid according to claim 1, characterized in that: The lower end of the tower body (1) is connected to three groups of support columns (12), and the lower ends of the three groups of support columns (12) are all connected to anti-slip pads (13).

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