Device for effectively removing dust caused by aluminum powder feeding in triethyl aluminum production

Abstract

The utility model relates to a device for effectively removing dust caused by aluminum powder feeding in triethyl aluminum production. The problems that in the prior art, aluminum powder dust is prone to being emptied to a production device area, safety is poor, and the environment is polluted are solved. The device for effectively removing the aluminum powder dust comprises a washing tower, an aluminum powder dust collecting pipe is arranged at the inlet end of the washing tower, the inlet end of the washing tower is connected with a white oil supply mechanism, the outlet end of the washing tower is connected with a filter press, the filter press is connected with a triethyl aluminum storage tank assembly, and the triethyl aluminum storage tank assembly is connected with a reaction kettle. The device has the advantages that the safety is good, the aluminum powder can be recycled, white oil is recycled almost without consumption in the using process, the production cost is reduced, the production environment is effectively improved, and the reaction rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal equipment technical field, concretely relates to a device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production. BACKGROUND

[0002] Triethylaluminum is an organic compound, chemical formula is C6H15Al, is colorless transparent liquid, dissolves in benzene, miscible in saturated hydrocarbon, is mainly used as catalyst, initiator, rocket fuel, also can be used for gas aluminizing. When its preparation, triethylaluminum seed and aluminum powder are mixed in the metering tank, then pass into the reaction kettle and pass into hydrogen gas to carry out hydrogenation reaction, after hydrogenation, need to carry out ethylation reaction, then pass through distillation system and carry out distillation purification and prepare. In the production process of triethylaluminum, the control of aluminum powder is mainly by directly feeding into the reaction kettle after quantitative weighing, because aluminum powder is left in the powder feeding tank and pipeline, the reaction yield is affected, in addition, in the process of feeding aluminum powder, the traditional way is manual feeding, considering the safety factor, the pipeline feeding is optimized, but due to the existence of pressure difference in the process of conveying, a large amount of aluminum powder dust is inevitably vented to the production area, which can easily lead to aluminum powder dust explosion, poor safety and easy to cause unnecessary waste and environmental pollution, and a large amount of aluminum powder dust vented also reduces the reaction yield and affects the production economy.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, the Chinese patent document discloses a triethylaluminum production equipment with controllable aluminum powder feeding [CN202311581791.7], which comprises a reaction kettle, a hydrogen inlet is arranged on the reaction kettle, a metering tank is installed on the reaction kettle, a feeding port is arranged on the metering tank, a motor is installed on the metering tank, a stirring rod is installed on the motor, a hollow square tube is installed on the metering tank, an intermittent feeding mechanism for intermittently blowing aluminum powder is installed on the hollow square tube, a feeding pipe is installed on the hollow square tube, and a feeding mechanism for rotating conveying aluminum powder is arranged in the feeding pipe.

[0004] The above scheme solves the problem of poor reaction yield in the production of triethylaluminum to some extent, but the scheme still has many deficiencies, for example: when feeding, triethylaluminum dust is easily vented to the production area due to the existence of pressure difference, aluminum powder dust is easy to explode, safety is poor and will cause unnecessary waste and environmental pollution, and a large amount of aluminum powder dust vented also reduces the reaction yield and affects the production economy. SUMMARY

[0005] The utility model aims at the above problem, provides a device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, comprising a washing tower, an aluminum powder dust collecting pipe is arranged at the import end of the washing tower, a white oil supply mechanism is connected to the import end of the washing tower, a filter press is connected to the export end of the washing tower, and the filter press is connected with a triethylaluminum storage tank assembly, the triethylaluminum storage tank assembly is connected with a reaction kettle, and the filter press is connected with the white oil supply mechanism through a white oil return pipe.

[0007] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, a first nitrogen gas inlet pipe is arranged at the upper end of the washing tower, and a first nitrogen gas vent pipe is also arranged at the upper end of the washing tower.

[0008] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, a transparent observation sight glass is arranged on the washing tower.

[0009] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, the first nitrogen gas inlet pipe and the first nitrogen gas vent pipe are both provided with a first gas valve.

[0010] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, the white oil supply mechanism comprises a white oil storage tank, the lower end of the white oil storage tank is connected to the upper end of the washing tower through an oil supply pipe, and the upper end of the white oil storage tank is connected to the upper end of the washing tower through a return pipe.

[0011] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, a second nitrogen gas inlet pipe is arranged at the upper end of the white oil storage tank, and a second nitrogen gas vent pipe is arranged at one side of the second nitrogen gas inlet pipe and inserted into the white oil storage tank.

[0012] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, an oil inlet valve is arranged on the oil supply pipe, an oil return valve is arranged on the return pipe, and a second gas valve is arranged on the second nitrogen gas inlet pipe and the second nitrogen gas vent pipe.

[0013] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, the triethylaluminum storage tank assembly comprises a plurality of triethylaluminum storage tanks, the inlet end of the triethylaluminum storage tank at the front end is connected to the output end of the filter press through an aluminum powder conveying pipe, and the adjacent two triethylaluminum storage tanks are connected through a flow guide pipe between the head and the tail.

[0014] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, the discharge end of the triethylaluminum storage tank at the end is connected to the reaction kettle through an aluminum powder output pipe, and a nitrogen gas input pipe is arranged at the upper end of the triethylaluminum storage tank.

[0015] In the device that effectively removes the dust caused by aluminum powder feeding in triethylaluminum production, a sampling hole is arranged on the washing tower.

[0016] Compared with the prior art, the device has the advantages that: the aluminum powder dust generated in the process of aluminum powder feeding is collected into the washing tower, so that the aluminum powder dust is avoided from being generated in the device area, the dust explosion risk of the device area is reduced, the production safety is improved, the pollution to the environment is reduced, the aluminum powder passing through the filter pressing mechanism can be reused, the raw material loss is reduced, the production cost is reduced, the aluminum powder discharged is collected again and fed into the reaction kettle, the reaction yield is improved, the aluminum powder waste is avoided, and the production economy is improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] In the drawing: washing tower 1, aluminum powder dust collecting pipe 11, first nitrogen gas inlet pipe 12, first nitrogen gas vent pipe 13, transparent observation sight glass 14, first gas valve 15, sampling hole 16, white oil supply mechanism 2, white oil storage tank 21, oil supply pipe 22, oil return pipe 23, second nitrogen gas inlet pipe 24, second nitrogen gas vent pipe 25, oil inlet valve 26, oil return valve 27, second gas valve 28, triethyl aluminum storage tank assembly 3, triethyl aluminum storage tank 31, aluminum powder conveying pipe 32, flow guide pipe 33, aluminum powder output pipe 34, nitrogen gas input pipe 35, reaction kettle 4, filter press 5, white oil return pipe 51. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and specific implementation.

[0020] As Figure 1 shown, a device for effectively removing dust caused by aluminum powder feeding in triethyl aluminum production, comprising a washing tower 1, the inlet end of the washing tower 1 is provided with an aluminum powder dust collecting pipe 11, the washing tower 1 is connected with a white oil supply mechanism 2 at the inlet end, the outlet end of the washing tower 1 is connected with a filter press 5, and the filter press 5 is connected with a triethyl aluminum storage tank assembly 3, the triethyl aluminum storage tank assembly 3 is connected with a reaction kettle 4, and the filter press 5 is connected with the white oil supply mechanism 2 through a white oil return pipe 51.

[0021] The aluminum powder dust enters the washing tower through the aluminum powder dust collecting pipe 11, and the aluminum powder is fed in a fully closed manner to ensure safety.

[0022] The upper end of the washing tower 1 is provided with a first nitrogen gas inlet pipe 12, and the upper end of the washing tower 1 is also provided with a first nitrogen gas vent pipe 13.

[0023] The first nitrogen gas inlet pipe 12 is used for charging nitrogen gas to pressurize, so that the aluminum powder is discharged from the outlet end of the washing tower, and the first nitrogen gas vent pipe 13 is used for discharging nitrogen gas to depressurize.

[0024] Obviously, the washing tower 1 is provided with a transparent observation mirror 14.

[0025] The transparent observation mirror 14 is convenient for observing the aluminum powder collection amount in the washing tower 1.

[0026] Further, the first nitrogen gas inlet pipe 12 and the first nitrogen gas exhaust pipe 13 are both provided with a first gas valve 15.

[0027] Further, the white oil supply mechanism 2 comprises a white oil storage tank 21, the lower end of the white oil storage tank 21 is connected with the upper end of the washing tower 1 through an oil supply pipe 22, and the upper end of the white oil storage tank 21 is connected with the upper end of the washing tower 1 through an oil return pipe 23.

[0028] Specifically, the upper end of the white oil storage tank 21 is provided with a second nitrogen gas inlet pipe 24, and one side of the second nitrogen gas inlet pipe 24 is provided with a second nitrogen gas exhaust pipe 25 inserted into the white oil storage tank 21.

[0029] The washing tower 1 stores clean white oil as an inert solvent to collect aluminum powder into the white oil, thereby reducing the risk,

[0030] More specifically, the oil supply pipe 22 is provided with an oil inlet valve 26, the oil return pipe 23 is provided with an oil return valve 27, and the second nitrogen gas inlet pipe 24 and the second nitrogen gas exhaust pipe 25 are both provided with a second gas valve 28.

[0031] When a certain amount of aluminum powder is collected in the washing tower 1, sampling analysis is required, when the solid content is > 60%, the oil return valve 27 is opened to guide the upper layer of white oil out of the white oil storage tank 21 through the oil return pipe 23, and the oil supply pipe 22 is used to supply white oil to the washing tower 1.

[0032] In detail, the triethyl aluminum storage tank assembly 3 comprises a plurality of triethyl aluminum storage tanks 31, and the triethyl aluminum storage tank 31 at the front end is connected with the output end of the filter press 5 through an aluminum powder conveying pipe 32 at the inlet end, and two adjacent triethyl aluminum storage tanks 31 are connected through a flow guide pipe 33 between the head and tail.

[0033] The aluminum powder in the lower layer of the washing tower 1 is conveyed to the triethyl aluminum storage tank 31 after being filtered by the filter press 5, and the residual white oil in the powder is removed through the cleaning of triethyl aluminum, thereby ensuring that no white oil is brought in the production.

[0034] Preferably, the triethyl aluminum storage tank 31 at the end is connected with the reaction kettle 4 through an aluminum powder output pipe 34 at the discharge end, and the upper end of the triethyl aluminum storage tank 31 is provided with a nitrogen gas input pipe 35.

[0035] In addition, the washing tower 1 is provided with a sampling hole 16. The sampling hole 16 is used for sampling and analyzing the solid content in the washing tower 1.

[0036] In summary, the principle of the present embodiment is that, in daily use, the aluminum powder dust enters the washing tower 1 through the aluminum powder dust collection pipe 11, the washing tower 1 stores clean white oil therein, the aluminum powder is collected into the white oil as an inert solvent, when a certain amount of aluminum powder is collected in the washing tower 1, sampling analysis is performed, when the solid content is > 60%, the upper layer white oil is guided out of the washing tower 1 to the white oil storage tank 21 through the oil return pipe 23, the aluminum powder in the lower layer of the washing tower 1 is transported to the triethyl aluminum storage tank 31 after being pressed and filtered by the filter press 5, the white oil after being pressed and filtered is returned to the white oil storage tank 21 through the white oil return pipe 51, the aluminum powder in the triethyl aluminum storage tank 31 is cleaned by the triethyl aluminum, the residual white oil in the powder is taken away, and the aluminum powder enters the reaction kettle 4 through the aluminum powder output pipe 34.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0038] Although the terms such as washing tower 1, aluminum powder dust collection pipe 11, first nitrogen gas inlet pipe 12, first nitrogen gas vent pipe 13, transparent observation sight glass 14, first gas valve 15, sampling hole 16, white oil supply mechanism 2, white oil storage tank 21, oil supply pipe 22, oil return pipe 23, second nitrogen gas inlet pipe 24, second nitrogen gas vent pipe 25, oil inlet valve 26, oil return valve 27, second gas valve 28, triethyl aluminum storage tank assembly 3, triethyl aluminum storage tank 31, aluminum powder conveying pipe 32, flow guide pipe 33, aluminum powder output pipe 34, nitrogen gas input pipe 35, reaction kettle 4, filter press 5, white oil return pipe 51, etc. are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum, comprising a washing tower (1), wherein an aluminum powder dust collecting pipe (11) is arranged at the inlet end of the washing tower (1), characterized in that, The white oil supply mechanism (2) is connected to the inlet end of the washing tower (1), the pressure filter (5) is connected to the outlet end of the washing tower (1), and the pressure filter (5) is connected with the triethyl aluminum storage tank assembly (3), the triethyl aluminum storage tank assembly (3) is connected with the reaction kettle (4), and the pressure filter (5) is connected with the white oil supply mechanism (2) through the white oil return pipe (51).

2. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 1, characterized in that, The first nitrogen gas inlet pipe (12) is arranged on the upper end of the washing tower (1), and the first nitrogen gas vent pipe (13) is also arranged on the upper end of the washing tower (1).

3. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 2, characterized in that, The transparent observation sight glass (14) is arranged on the washing tower (1).

4. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 3, characterized in that, The first nitrogen gas inlet pipe (12) and the first nitrogen gas vent pipe (13) are both provided with the first gas valve (15).

5. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 1, characterized in that, The white oil supply mechanism (2) comprises the white oil storage tank (21), the lower end of the white oil storage tank (21) is connected with the upper end of the washing tower (1) through the oil supply pipe (22), and the upper end of the white oil storage tank (21) is connected with the upper end of the washing tower (1) through the oil return pipe (23).

6. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 5, characterized in that, The second nitrogen gas inlet pipe (24) is arranged on the upper end of the white oil storage tank (21), and the second nitrogen gas vent pipe (25) is arranged on one side of the second nitrogen gas inlet pipe (24) and is inserted into the white oil storage tank (21).

7. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 1, characterized in that, The oil inlet valve (26) is arranged on the oil supply pipe (22), the oil return valve (27) is arranged on the oil return pipe (23), and the second gas valve (28) is arranged on the second nitrogen gas inlet pipe (24) and the second nitrogen gas vent pipe (25).

8. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 1, characterized in that, The triethyl aluminum storage tank assembly (3) comprises a plurality of triethyl aluminum storage tanks (31), the inlet end of the triethyl aluminum storage tank (31) located at the front end is connected with the output end of the pressure filter (5) through the aluminum powder conveying pipe (32), and the adjacent two triethyl aluminum storage tanks (31) are connected through the flow guide pipe (33) between the head and the tail.

9. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 8, characterized in that, The aluminum powder output pipe (34) is connected between the triethyl aluminum storage tank (31) located at the tail end and the reaction kettle (4), and the nitrogen gas input pipe (35) is arranged on the upper end of the triethyl aluminum storage tank (31).

10. A device for effectively removing dust caused by aluminum powder feed in the production of triethylaluminum according to claim 1, characterized in that, The sampling hole (16) is arranged on the washing tower (1).

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