CN210728721U

CN210728721U - Acetophenone rectifying device

Info

Publication number: CN210728721U
Application number: CN201921558604.2U
Authority: CN
Inventors: 余超
Original assignee: Wuxi Baiyu Pharmaceutical Equipment Manufacturing Co Ltd
Current assignee: Wuxi Baiyu Pharmaceutical Equipment Manufacturing Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-12
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a rectifier unit of acetophenone, which comprises a base, base top outer wall has the electric heater through the bolt fastening, and there is the retort at the electric heater top through bolted connection, retort both sides outer wall is equipped with feed liquor pipe and decompression pipe respectively, and the decompression union coupling has the tuber pipe, the tuber pipe is connected with negative-pressure air fan, retort top center department and one side department are equipped with first discharging pipe and second discharging pipe respectively, and first discharging pipe and second discharging pipe all are connected with the drain pipe, two drain pipe one end all is connected with the condenser, feed liquor pipe, tuber pipe and drain pipe outer wall all overlap and are equipped with the solenoid valve, the retort outer wall passes through the bolt fastening manometer. The utility model discloses make impurity such as benzene, ether respectively via the drain pipe discharge of two differences during with acetophenone distillation, sneak into impurity such as benzene and ether once more in avoiding refined acetophenone, improve acetophenone rectification purification precision, guarantee product percent of pass.

Description

Acetophenone rectifying device

Technical Field

The utility model relates to a chemical industry equipment technical field especially relates to an acetophenone's rectifier unit.

Background

Acetophenone, also known as acetophenone, is an organic compound of formula C6H5COCH3, which is useful as an intermediate in the manufacture of pharmaceuticals, resins, flavors and tear gas, and also useful in the manufacture of hypnotics. Acetophenone is now mostly obtained as a by-product of the oxidation of cumene to phenol and acetone, and it can also be obtained by the acetylation of benzene with acetyl chloride.

Reacting anhydrous benzene (excessive) with anhydrous aluminum trichloride, heating in a water bath for 30min after generated hydrogen chloride gas does not escape, slightly cooling after the reaction is complete, pouring into a mixture of concentrated hydrochloric acid and crushed ice to completely dissolve aluminum salt, then adding ether, standing for layering, extracting a water layer with ether, combining an extract layer and an organic layer, washing with 10% sodium hydroxide until a washing solution is alkaline, washing with water, standing for layering, drying and dehydrating the organic layer with anhydrous calcium chloride, distilling benzene and ether out, distilling under reduced pressure, and collecting fractions at 88-89 ℃ under 2133Pa to obtain a finished product.

Benzene, ether and acetophenone of current acetophenone distillation plant are separated out through same pipeline, and when taking out to low pressure in the retort and distilling acetophenone again, it can remain partly benzene and ether in separating out the pipeline, and this makes and still can mix partly benzene and ether in the refined acetophenone, causes the defect that purification efficiency is not high, and in addition, common retort is integrated into one piece mostly, and it is also very inconvenient when cleaning or overhauing its inside.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an acetophenone rectifying device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a rectifier unit of acetophenone, includes the base, base top outer wall has the electric heater through the bolt fastening, and there is the retort at the electric heater top through bolted connection, retort both sides outer wall is equipped with feed liquor pipe and decompression pipe respectively, and the decompression union coupling has the tuber pipe, the tuber pipe is connected with negative-pressure air fan, retort top center department and one side department are equipped with first discharging pipe and second discharging pipe respectively, and just first discharging pipe and second discharging pipe all are connected with the drain pipe, two drain pipe one end all is connected with the condenser, feed liquor pipe, tuber pipe and drain pipe outer wall all overlap and are equipped with the solenoid valve, the retort outer wall passes through the bolt fastening manometer.

Preferably, the distillation tank comprises a bottom tank body, a middle tank body and a top tank body, and the bottom tank body, the middle tank body and the top tank body are sequentially fixed through bolts.

Preferably, the outer wall of the top of the base is fixed with a support through a bolt, and the two condensers are fixed to the top of the support through screws.

Preferably, the outer wall of the top of the base is provided with a mounting groove, and the negative pressure fan is fixed in the mounting groove through a bolt.

Preferably, a through hole is formed in the outer wall of the distillation tank, which is close to the pressure gauge, and the detection head of the pressure gauge penetrates through the through hole and is located in the distillation tank.

Preferably, the electric heater, the negative pressure fan, the condenser and the electromagnetic valve are all connected with the same PLC controller through wires, the PLC controller is connected with a power line, and the pressure gauge is connected with the PLC controller through a signal line.

The utility model has the advantages that:

1. through the setting of first discharging pipe, second discharging pipe for impurity such as benzene, ether is discharged via two different drain pipes respectively during with acetophenone distillation, sneaks into impurity such as benzene and ether again in avoiding refined acetophenone, improves acetophenone rectification purification precision, ensures the product percent of pass.

2. The retort sets up to syllogic bolt fit, makes things convenient for the daily maintenance, improves device practicality and convenience of use.

Drawings

Fig. 1 is a schematic structural diagram of an acetophenone rectification apparatus provided by the present invention;

fig. 2 is a schematic structural diagram of a distillation retort of an acetophenone rectification device provided by the utility model.

In the figure: 1 base, 2 electric heaters, 3 distillation pots, 4 liquid inlet pipes, 5 pressure reducing pipes, 6 air pipes, 7 negative pressure fans, 8 first discharge pipes, 9 second discharge pipes, 10 liquid outlet pipes, 11 condensers, 12 supports, 13 electromagnetic valves, 14 pressure gauges, 31 bottom pot bodies, 32 middle pot bodies and 33 top pot bodies.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a rectification apparatus for acetophenone comprises a base 1, an electric heater 2 is fixed on the outer wall of the top of the base 1 through bolts, a distillation retort 3 is connected on the top of the electric heater 2 through bolts, a liquid inlet pipe 4 and a pressure reducing pipe 5 are respectively arranged on the outer walls of two sides of the distillation retort 3, the pressure reducing pipe 5 is connected with an air pipe 6, the air pipe 6 is connected with a negative pressure fan 7, a first discharge pipe 8 and a second discharge pipe 9 are respectively arranged at the center and one side of the top of the distillation retort 3, the first discharge pipe 8 and the second discharge pipe 9 are both connected with liquid outlet pipes 10, one end of each of the two liquid outlet pipes 10 is connected with a condenser 11, electromagnetic valves 13 are respectively sleeved on the outer walls of the liquid inlet pipe 4, the air pipe 6 and the liquid outlet pipes 10, a pressure gauge 14 is fixed on the outer wall of the distillation retort 3 through bolts, the distillation retort 3, there is support 12 base 1 top outer wall through the bolt fastening, two condensers 11 all are fixed in support 12 top through the screw, 1 top outer wall of base is opened there is the mounting groove, negative-pressure air fan 7 is in the mounting groove through the bolt fastening, 3 outer walls of retort are close to manometer 14 department and are opened there is the through-hole, manometer 14's detection head passes the through-hole and is located retort 3, electric heater 2, negative-pressure air fan 7, condenser 11 and solenoid valve 13 all are connected with same PLC controller through the wire, the PLC controller is connected with the power cord, manometer 14 passing signal line is connected with the PLC controller.

The working principle is as follows: feeding the reacted solution into a distillation tank 3 through a liquid inlet pipe 4, distilling the solution by an electric heater 2, opening a first discharging pipe 8 at the moment, closing a second discharging pipe 9, discharging separated impurities such as benzene, ether and the like through a liquid outlet pipe 10, closing the two discharging pipes after distilling the benzene and the ether, pumping the solution into the distillation tank to 2133Pa by a negative pressure fan 7 to distill acetophenone, closing the first discharging pipe 8 at the moment, opening the second discharging pipe 9, finally discharging the acetophenone through another liquid outlet pipe 10, discharging the impurities such as benzene, ether and the like and the acetophenone during distillation respectively through the two different liquid outlet pipes 10 by virtue of the arrangement of the first discharging pipe 8 and the second discharging pipe 9, avoiding mixing the impurities such as benzene, ether and the like into the refined acetophenone again, improving the precision of acetophenone rectification and purification, ensuring the product qualification rate, and ensuring the cooperation of a three-section bolt of the distillation tank 3, make things convenient for the daily overhaul to maintain, improve device practicality and convenience of use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a rectifying device of acetophenone, includes base (1), its characterized in that, base (1) top outer wall has electric heater (2) through the bolt fastening, and has retort (3) at electric heater (2) top through bolted connection, retort (3) both sides outer wall is equipped with feed liquor pipe (4) and decompression pipe (5) respectively, and decompression pipe (5) are connected with tuber pipe (6), tuber pipe (6) are connected with negative-pressure air fan (7), retort (3) top center department and one side department are equipped with first discharging pipe (8) and second discharging pipe (9) respectively, and first discharging pipe (8) and second discharging pipe (9) all are connected with drain pipe (10), two drain pipe (10) one end all is connected with condenser (11), feed liquor pipe (4), tuber pipe (6) and the equal cover of drain pipe (10) outer wall are equipped with solenoid valve (13), and a pressure gauge (14) is fixed on the outer wall of the distillation tank (3) through bolts.

2. An acetophenone rectification apparatus as claimed in claim 1, characterized in that the distillation tank (3) comprises a bottom tank (31), a middle tank (32) and a top tank (33), and the bottom tank (31), the middle tank (32) and the top tank (33) are fixed in sequence by bolts.

3. A rectification device for acetophenone as claimed in claim 1, characterized in that the external wall of the top of the base (1) is fixed with a bracket (12) by bolts, and both condensers (11) are fixed on the top of the bracket (12) by screws.

4. The acetophenone rectification apparatus according to claim 1, wherein the base (1) has an installation groove on the outer wall of the top thereof, and the negative pressure fan (7) is fixed in the installation groove by bolts.

5. An acetophenone rectification apparatus as claimed in claim 1, characterized in that the distillation tank (3) has a through hole on its outer wall near the pressure gauge (14), and the pressure gauge (14) has a detection head passing through the through hole and located in the distillation tank (3).

6. The acetophenone rectification apparatus according to claim 1, wherein the electric heater (2), the negative pressure fan (7), the condenser (11) and the electromagnetic valve (13) are all connected with a same PLC controller through wires, the PLC controller is connected with a power line, and the pressure gauge (14) is connected with the PLC controller through a signal line.