Reboiler of dibenzylamine rectifying tower

Abstract

The utility model relates to the technical field of dibenzylamine processing, and provides a dibenzylamine rectifying tower reboiler which comprises a tower body and two connecting covers, fixing discs are fixedly installed at the two ends of the tower body, flange plates are fixedly installed on the opposite faces of the two connecting covers, a steam exhaust pipe is fixedly installed on the outer surface of one connecting cover, and a steam exhaust pipe is fixedly installed on the outer surface of the other connecting cover. A feeding pipe is fixedly mounted on the outer surface of the other connecting cover; a dibenzylamine crude product is added into the tower body through the feeding pipe, then steam is conveyed into the tower body through the two second steam inlet pipes and the two first steam inlet pipes, the U-shaped pipe is arranged in the tower body, the steam enters the U-shaped pipe, heat energy can be transmitted to the dibenzylamine crude product, the dibenzylamine crude product is vaporized to form steam, and the steam is conveyed into the tower body through the second steam inlet pipes and the first steam inlet pipes. Steam passes through the baffle plates to improve heat energy exchange, so that production of dibenzylamine is improved, the one-way valves are arranged on the outer surfaces of the two first steam inlet pipes, heat energy waste caused by steam backflow can be prevented, and the steam is exhausted from the steam exhaust pipe through the exhaust pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of dibenzylamine processing, in particular to a dibenzylamine rectification tower reboiler. Background Art

[0002] Dibenzylamine is an important organic synthesis intermediate. Since dibenzylamine does not produce any carcinogenic nitrosamines, it is widely used in the synthesis of drugs such as penicillin and linezolid. At the same time, dibenzylamine can be used to produce highly efficient and non-toxic vulcanization accelerators such as zinc dibenzyldithiocarbamate (ZBEC) and tetrabenzylthiuram disulfide (TBzTD), and can be used for the determination of cobalt, iron, cyanate, etc.

[0003] However, in the prior art, the production and processing of dibenzylamine requires distillation treatment. The traditional distillation tower is not convenient for cleaning the inside, and the inside of the distillation tower is prone to blockage for a long time, resulting in reduced quality of dibenzylamine production and processing. In addition, the steam inside the distillation tower is not easy to discharge, thereby reducing the efficiency of the reboiler and the effect of dibenzylamine vaporization is insufficient. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the production and processing of dibenzylamine requires distillation treatment, the traditional distillation tower is not convenient for cleaning the inside, the inside of the distillation tower is prone to blockage for a long time, thereby reducing the quality of the production and processing of dibenzylamine, and the steam inside the distillation tower is not convenient to be discharged, thereby reducing the efficiency of the reboiler and the effect of dibenzylamine vaporization is insufficient.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dibenzylamine distillation tower reboiler, comprising: a tower body and two connecting covers, both ends of the tower body are fixedly installed with fixed plates, the opposite surfaces of the two connecting covers are fixedly installed with flanges, the outer surface of one of the connecting covers is fixedly installed with a steam exhaust pipe, and the outer surface of the other connecting cover is fixedly installed with a feed pipe, and also includes:

[0006] Two steam inlet pipes 1 are fixedly mounted on the outer surface of the center of the tower body, and the two steam inlet pipes 1 are symmetrical;

[0007] Two one-way valves are fixedly installed on the outer surface of the two steam inlet pipes.

[0008] Preferably, a U-shaped tube is fixedly installed at the inner lower end of the tower body, and both ends of the U-shaped tube are connected to the steam inlet pipe.

[0009] The technical effect of adopting the above further solution is that the U-shaped tube can conveniently bring the steam heat energy into the interior of the tower body and transfer the heat energy to the crude dibenzylamine.

[0010] Preferably, an exhaust pipe is fixedly installed at the center of the U-shaped tube, a connecting bucket is fixedly installed on the top of the exhaust pipe, and the connecting bucket is connected to the steam exhaust pipe.

[0011] The technical effect of adopting the above further solution is that the exhaust pipe can transport steam out of the interior of the tower body.

[0012] Preferably, a plurality of distance rods are fixedly installed inside the tower body, and baffles are fixedly installed on the outer surfaces of the plurality of distance rods.

[0013] The technical effect of adopting the above further solution is that the baffle can improve the exchange of heat energy, thereby improving the dibenzylamine distillation.

[0014] Preferably, an annular tube is fixedly installed inside one of the connection covers, and a plurality of sprinkler heads are fixedly installed on the outer surface of the annular tube.

[0015] The technical effect of adopting the above further solution is that the annular pipe can spray cleaning water through the spray head, thereby cleaning the inside of the tower body.

[0016] Preferably, a water inlet pipe is fixedly connected to the outer surface of the annular tube, and the water inlet pipe passes through the connecting cover.

[0017] The technical effect of adopting the above further solution is that the water inlet pipe can transport the cleaning water to the inside of the annular pipe.

[0018] Preferably, a second steam inlet pipe is fixedly installed on the outer surface of the tower body close to the annular pipe, and a vent pipe is fixedly installed on the side of the tower body away from the second steam inlet pipe.

[0019] The technical effect of adopting the above further solution is that the vent pipe can discharge steam to ensure the safety of the interior of the tower body and avoid overpressure.

[0020] Preferably, a condensate pipe is fixedly mounted on one end of the tower body close to the feed pipe, and the condensate pipe is arranged at the lower end of the tower body.

[0021] The technical effect of adopting the above further scheme is that the condensate tube is convenient for taking out the dibenzylamine after distillation.

[0022] Compared with the prior art, the advantages and positive effects of the utility model are:

[0023] 1. In the utility model, crude dibenzylamine is added to the interior of the tower body through a feed pipe, and then steam is transported to the interior of the tower body through two steam inlet pipes 2 and two steam inlet pipes 1. A U-shaped pipe is provided inside the tower body. Steam entering the U-shaped pipe can transfer heat energy to the crude dibenzylamine, thereby vaporizing it to form steam. The steam passes through a baffle to improve heat exchange, thereby improving the production of dibenzylamine. A one-way valve is provided on the outer surface of the two steam inlet pipes 1 to prevent waste of heat energy caused by steam reflux. The steam is transported to the steam exhaust pipe through the exhaust pipe for discharge.

[0024] 2. In the utility model, the dibenzylamine after distillation is taken out through the condensate pipe, and the vent pipe can discharge steam to ensure the safety of the inside of the tower body and avoid overpressure. Cleaning water or cleaning liquid can be input into the annular pipe through the water inlet pipe. A plurality of spray heads are fixedly installed on the outer surface of the annular pipe. The cleaning water can be sprayed out through the spray head to clean the inside of the tower body, thereby improving the cleanliness of the inside of the tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural schematic diagram of a dibenzylamine distillation tower reboiler is proposed for the utility model;

[0026] Figure 2 A side view structural diagram of a dibenzylamine distillation tower reboiler is provided for the utility model;

[0027] Figure 3 A cross-sectional structural schematic diagram of a dibenzylamine distillation tower reboiler is proposed for the utility model;

[0028] Figure 4 The utility model proposes a dibenzylamine distillation tower reboiler Figure 3 Enlarged structural diagram at A in the middle.

[0029] Legend:

[0030] 1. Tower body; 101. Connecting cover; 102. Steam exhaust pipe; 103. Fixing plate; 104. Flange; 105. Water inlet pipe; 106. Vent pipe; 107. Steam inlet pipe 1; 108. Condensate pipe; 109. Feed pipe; 110. One-way valve; 111. Steam inlet pipe 2; 112. Annular pipe; 113. Exhaust pipe; 114. Baffle; 115. Spacer; 116. U-shaped pipe; 117. Sprinkler head; 118. Connecting bucket. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0033] Embodiment 1, as Figure 1-4 As shown, the utility model provides a dibenzylamine distillation tower reboiler, comprising: a tower body 1 and two connecting covers 101, both ends of the tower body 1 are fixedly installed with fixed plates 103, the opposite surfaces of the two connecting covers 101 are fixedly installed with flanges 104, the outer surface of one connecting cover 101 is fixedly installed with a steam exhaust pipe 102, and the outer surface of the other connecting cover 101 is fixedly installed with a feed pipe 109, and also includes: two steam inlet pipes 107, both are fixedly installed on the outer surface of the center of the tower body 1, and the two steam inlet pipes 107 are symmetrical; two one-way valves 110, both are fixedly installed on the outer surfaces of the two steam inlet pipes 107; a U-shaped tube 116 is fixedly installed at the lower end of the inner part of the tower body 1, and both ends of the U-shaped tube 116 are connected to the steam inlet pipe 107; an exhaust pipe 113 is fixedly installed at the center of the U-shaped tube 116, and a connecting bucket 118 is fixedly installed on the top of the exhaust pipe 113, and the connecting bucket 118 is connected to the steam exhaust pipe 102.

[0034] In this embodiment, crude dibenzylamine is added to the interior of the tower body 1 through the feed pipe 109, and then steam is transported to the interior of the tower body 1 through two steam inlet pipes 111 and two steam inlet pipes 107. A U-shaped tube 116 is provided inside the tower body 1. Steam entering the U-shaped tube 116 can transfer heat energy to the crude dibenzylamine, thereby vaporizing it to form steam. The steam passes through the baffle 114 to improve heat exchange, thereby improving the production of dibenzylamine. The outer surfaces of the two steam inlet pipes 107 are provided with a one-way valve 110 to prevent waste of heat energy caused by steam reflux. The steam is transported to the steam exhaust pipe 102 through the exhaust pipe 113 for discharge.

[0035] Embodiment 2, as Figure 1-4 As shown, a plurality of distance rods 115 are fixedly installed inside the tower body 1, and baffles 114 are fixedly installed on the outer surfaces of the plurality of distance rods 115; an annular pipe 112 is fixedly installed inside one of the connecting covers 101, and a plurality of spray heads 117 are fixedly installed on the outer surface of the annular pipe 112; a water inlet pipe 105 is fixedly connected to the outer surface of the annular pipe 112, and the water inlet pipe 105 passes through the connecting cover 101; a steam inlet pipe 111 is fixedly installed on the outer surface of the tower body 1 close to the annular pipe 112, and a vent pipe 106 is fixedly installed on the side of the tower body 1 away from the steam inlet pipe 111; a condensate pipe 108 is fixedly installed on one end of the tower body 1 close to the feed pipe 109, and the condensate pipe 108 is arranged at the lower end of the tower body 1.

[0036] In this embodiment, the dibenzylamine after distillation is taken out through the condensate pipe 108, and the vent pipe 106 can discharge steam to ensure the safety of the interior of the tower body 1 and avoid overpressure. Cleaning water or cleaning liquid can be input into the annular pipe 112 through the water inlet pipe 105. A plurality of spray heads 117 are fixedly installed on the outer surface of the annular pipe 112. The cleaning water can be sprayed out through the spray heads 117 to clean the interior of the tower body 1, thereby improving the cleanliness of the interior of the tower body 1.

[0037] Working principle: When in use, crude dibenzylamine is added to the interior of the tower body 1 through the feed pipe 109, and then steam is transported to the interior of the tower body 1 through two steam inlet pipes 111 and two steam inlet pipes 107. The interior of the tower body 1 is provided with a U-shaped tube 116. Steam entering the U-shaped tube 116 can transfer heat energy to the crude dibenzylamine, thereby vaporizing it to form steam. The steam passes through the baffle 114 to improve heat exchange, thereby improving the production of dibenzylamine. The outer surface of the two steam inlet pipes 107 is provided with a one-way valve 110, which can To prevent waste of heat energy caused by steam reflux, the steam is transmitted to the steam discharge pipe 102 through the exhaust pipe 113 for discharge, and the dibenzylamine after distillation is taken out through the condensate pipe 108. The vent pipe 106 can discharge steam to ensure the safety of the interior of the tower body 1 and avoid overpressure. Cleaning water or cleaning liquid can be input into the annular pipe 112 through the water inlet pipe 105. A plurality of spray heads 117 are fixedly installed on the outer surface of the annular pipe 112. The cleaning water can be sprayed out through the spray heads 117 to clean the interior of the tower body 1, thereby improving the cleanliness of the interior of the tower body 1.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A dibenzylamine rectification tower reboiler, comprising: A tower body (1) and two connecting covers (101), wherein both ends of the tower body (1) are fixedly mounted with fixing plates (103), and the opposite surfaces of the two connecting covers (101) are fixedly mounted with flanges (104), wherein the outer surface of one of the connecting covers (101) is fixedly mounted with a steam exhaust pipe (102), and the outer surface of the other connecting cover (101) is fixedly mounted with a feed pipe (109), characterized in that it also includes: Two steam inlet pipes (107) are fixedly mounted on the outer surface of the center of the tower body (1), and the two steam inlet pipes (107) are symmetrical; The two one-way valves (110) are fixedly mounted on the outer surfaces of the two steam inlet pipes (107).

2. A dibenzylamine distillation tower reboiler according to claim 1, characterized in that: A U-shaped tube (116) is fixedly installed at the lower end of the interior of the tower body (1), and both ends of the U-shaped tube (116) are connected to a steam inlet pipe (107).

3. A dibenzylamine distillation tower reboiler according to claim 2, characterized in that: An exhaust pipe (113) is fixedly installed at the center of the U-shaped pipe (116), and a connecting bucket (118) is fixedly installed at the top of the exhaust pipe (113), and the connecting bucket (118) is connected to the steam exhaust pipe (102).

4. A dibenzylamine distillation tower reboiler according to claim 3, characterized in that: A plurality of distance rods (115) are fixedly mounted inside the tower body (1), and a baffle (114) is fixedly mounted on the outer surfaces of the plurality of distance rods (115).

5. A dibenzylamine distillation tower reboiler according to claim 4, characterized in that: An annular tube (112) is fixedly mounted inside one of the connection covers (101), and a plurality of spray heads (117) are fixedly mounted on the outer surface of the annular tube (112).

6. A dibenzylamine distillation tower reboiler according to claim 5, characterized in that: The outer surface of the annular tube (112) is fixedly connected to a water inlet pipe (105), and the water inlet pipe (105) passes through the connection cover (101).

7. A dibenzylamine distillation tower reboiler according to claim 6, characterized in that: A second steam inlet pipe (111) is fixedly mounted on the outer surface of the tower body (1) close to the annular pipe (112), and a vent pipe (106) is fixedly mounted on a side of the tower body (1) away from the second steam inlet pipe (111).

8. A dibenzylamine distillation tower reboiler according to claim 7, characterized in that: A condensate pipe (108) is fixedly mounted on one end of the tower body (1) close to the feed pipe (109), and the condensate pipe (108) is arranged at the lower end of the tower body (1).

Images