Rectification equipment for preparing triethyl aluminum

Abstract

The rectification equipment comprises a tower body, the bottom of the tower body is connected with a base, the lower left side of the tower body is connected with a steam inlet pipe, the middle of the left side of the tower body is connected with a feeding port, the top of the tower body is connected with a gas outlet pipe, and filler is arranged in the middle of the interior of the tower body. A lower grid plate is arranged at the bottom of the filler, the middle of the filler is separated by two middle grid plates which are distributed up and down, a gap exists between the two middle grid plates, the top of the gas outlet pipe is connected with a lower connecting flange, and a filtering chamber is mounted at the top of the lower connecting flange. According to the utility model, the two nuts, the fastening bolt, the upper connecting flange, the filter chamber, the filter screen and the lower connecting flange are arranged and are matched with each other, so that gas passing through the gas outlet pipe can be filtered to remove impurities, and the purity of prepared triethyl aluminum is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectification relevant equipment technical field, concretely relates to a rectification equipment for triethylaluminum preparation. BACKGROUND

[0002] Rectification is a separation process that separates each component in a mixture by using the different volatility of each component, and commonly used equipment includes plate rectification tower and packing rectification tower, rectification equipment refers to the equipment used for rectification operation, mainly including rectification tower and reboiler and condenser.Ethyl aluminum is an organic compound, which is colorless transparent liquid, soluble in benzene, miscible in saturated hydrocarbons, mainly used as catalyst, initiator, rocket fuel, and also can be used for gas aluminizing.In preparation of triethylaluminum, rectification equipment will be used.

[0003] The existing rectification equipment for triethylaluminum preparation cannot filter and remove impurities from the gas passing through the gas outlet pipe during use, so that the purity of the prepared triethylaluminum is not high, and therefore there is an urgent need for a rectification equipment for triethylaluminum preparation to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a rectification equipment for triethylaluminum preparation to solve the problem that the existing rectification equipment for triethylaluminum preparation cannot filter and remove impurities from the gas passing through the gas outlet pipe during use, so that the purity of the prepared triethylaluminum is not high.

[0005] The utility model discloses a technical scheme for achieving the above-mentioned purposes is: a kind of rectifying equipment for triethylaluminium preparation, including tower body, the bottom of the tower body is connected with base, the lower left side of the tower body is connected with steam inlet pipe, the left side of the tower body is connected with feed inlet in middle, the top of the tower body is connected with gas outlet pipe, the inside middle of the tower body is provided with packing, the bottom of the packing is provided with lower grid, the middle of the packing is separated by two upper and lower distribution middle grid, there is gap between two the middle grid, the top of the gas outlet pipe is connected with lower connecting flange, the top of the lower connecting flange is installed with filter chamber, the top of the filter chamber is provided with upper connecting flange, the axis of the upper connecting flange is connected with conveying pipeline, the upper connecting flange and lower connecting flange are connected by two fastening bolts from top to bottom in order, pass through upper connecting flange, filter chamber and lower connecting flange and cooperate with two nuts, the end of the conveying pipeline is connected with condenser, the backflow device is arranged below the condenser, the water outlet of the condenser is connected with backflow device, the bottom of the backflow device is connected with liquid outlet pipe by connecting pipe, one end of the liquid outlet pipe is connected with spray head by passing through tower body, the spray head is located above packing, the lower right side of the tower body is connected with liquid outlet, one end of the liquid outlet is connected with reboiler, the top of the reboiler is connected with back gas pipe, the end of the back gas pipe is connected with the lower right side of the tower body, the inside of the filter chamber is installed with filter screen.

[0006] As a preferred technical scheme of the utility model, the two ends of the liquid outlet pipe are respectively provided with backflow valve and liquid outlet valve.

[0007] As a preferred technical scheme of the utility model, the outlet end of the feed inlet is located between the two middle grids.

[0008] As a preferred technical scheme of the utility model, the left end of the back gas pipe is located above the left end of the liquid outlet.

[0009] As a preferred technical scheme of the utility model, the two fastening bolts pass through the left and right ends of the filter chamber from top to bottom respectively.

[0010] As a preferred technical scheme of the utility model, the steam inlet pipe and the back gas pipe are located below the lower grid.

[0011] Due to the use of the above technical scheme, the beneficial effects of the present application compared with the prior art are as follows:

[0012] The rectifying equipment for triethylaluminium preparation of the present application can filter and remove impurities from the gas passing through the gas outlet pipe by setting two nuts, fastening bolts, upper connecting flange, filter chamber, filter screen and lower connecting flange, and utilizing the mutual cooperation between them, thereby improving the purity of the prepared triethylaluminium. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the overall structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0018] In the figure: 1. Tower body; 2. Base; 3. Steam inlet pipe; 4. Feed port; 5. Gas outlet pipe; 6. Lower grid; 7. Middle grid; 8. Condenser; 9. Water outlet; 10. Reflux; 11. Connecting pipe; 12. Liquid outlet valve; 13. Reflux valve; 14. Liquid outlet; 15. Reboiler; 16. Return air pipe; 17. Upper connecting flange; 18. Lower connecting flange; 19. Filter chamber; 20. Fastening bolts; 21. Nuts; 22. Filter screen; 23. Delivery pipe; 24. Filling; 25. Liquid outlet pipe; 26. Sprinkler head. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be combined. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0023] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] Embodiment one

[0026] Appendix Figures 1-4The utility model relates to a rectification equipment for triethylaluminium preparation, including tower body 1, the bottom of tower body 1 is connected with base 2, the left lower side of tower body 1 is connected with steam inlet pipe 3, the left side of tower body 1 is connected with feed inlet 4, the top of tower body 1 is connected with gas outlet pipe 5, the inside of tower body 1 is provided with filler 24, the bottom of filler 24 is provided with lower grid 6, the middle of filler 24 is separated by two upper and lower distribution middle grid 7, and there is a gap between the two middle grid 7, the top of gas outlet pipe 5 is connected with lower connecting flange 18, the top of lower connecting flange 18 is installed with filter chamber 19, the top of filter chamber 19 is provided with upper connecting flange 17, the axis of upper connecting flange 17 is connected with conveying pipeline 23, and the upper connecting flange 17 and lower connecting flange 18 are connected by two fastening bolts 20 from top to bottom in turn through upper connecting flange 17, filter chamber 19 and lower connecting flange 18 and are connected with two nuts 21, the tail end of conveying pipeline 23 is connected with condenser 8, the just below of condenser 8 is provided with refluxer 10, the water outlet 9 of condenser 8 is connected with refluxer 10, the bottom of refluxer 10 is connected with liquid outlet pipe 25 through connecting pipe 11, one end of liquid outlet pipe 25 is connected with shower head 26 through tower body 1, shower head 26 is located the just above of filler 24, the right lower side of tower body 1 is connected with liquid outlet 14, one end of liquid outlet 14 is connected with reboiler 15, the top of reboiler 15 is connected with back gas pipe 16, and the tail end of back gas pipe 16 is connected with the right lower side of tower body 1, and the inside of filter chamber 19 is installed with filter screen 22.

[0027] Wherein, the two ends of liquid outlet pipe 25 are provided with reflux valve 13 and liquid outlet valve 12 respectively.

[0028] Wherein, the outlet end of feed inlet 4 is located between the two middle grid 7.

[0029] Wherein, the left end of back gas pipe 16 is located the just above of the left end of liquid outlet 14.

[0030] Wherein, two fastening bolts 20 pass through the left and right ends of filter chamber 19 from top to bottom respectively.

[0031] Wherein, steam inlet pipe 3 and back gas pipe 16 are all located below lower grid 6.

[0032] The working principle and use process of the utility model are as follows: firstly, the intermediate product diethyl aluminum hydride obtained through hydrogenation reaction is introduced into the tower body 1 from the feed inlet 4, and steam is input into the tower body 1 through the steam inlet pipe 3, at this time, the target product obtained is flowed out from the gas outlet pipe 5 and passes through the filter chamber 19, the gas passing through the gas outlet pipe 5 is filtered and impurities are removed through the filter screen 22 in the filter chamber 19, so that the purity of the prepared triethyl aluminum is improved, the product after filtering enters the condenser 8 and obtains triethyl aluminum liquid, the obtained triethyl aluminum liquid enters the refluxer 10 through the water outlet 9, and is transported to the liquid outlet pipe 25 through the connecting pipe 11 on the refluxer 10, when reflux is needed, the reflux valve 13 is opened, so that the triethyl aluminum liquid is refluxed to the spray head 26, and is sprayed out through the spray head 26 for recycling treatment, finally, the obtained triethyl aluminum finished product liquid is discharged from the other end of the liquid outlet pipe 25 through the opening of the liquid outlet valve 12, and the liquid flowed out from the bottom liquid outlet 14 of the tower body 1 is heated after passing through the reboiler 15 and is flowed to the tower body 1 through the gas return pipe 16 for further treatment, the contents not described in detail in the description belong to the prior art known to the person skilled in the art.

[0033] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A distillation apparatus for preparing triethylaluminum, comprising a tower body, characterized in that: The bottom of the tower body is connected to a base, the lower left side of the tower body is connected to a steam inlet pipe, the middle of the left side of the tower body is connected to a feed port, the top of the tower body is connected to a gas outlet pipe, a filler is provided in the middle of the interior of the tower body, a lower grid plate is provided at the bottom of the filler, the middle of the filler is separated by two middle grid plates distributed up and down, and there is a gap between the two middle grid plates, the top of the gas outlet pipe is connected to a lower connecting flange, a filter chamber is installed on the top of the lower connecting flange, an upper connecting flange is provided on the top of the filter chamber, a conveying pipeline is connected to the axis of the upper connecting flange, and two connecting flanges are provided between the upper connecting flange and the lower connecting flange. The fastening bolts pass through the upper connecting flange, the filter chamber and the lower connecting flange from top to bottom in sequence and are connected with two nuts. The end of the delivery pipe is connected to the condenser. A reflux device is provided directly below the condenser. The water outlet of the condenser is connected to the reflux device. The bottom of the reflux device is connected to a liquid outlet pipe through a connecting pipe. One end of the liquid outlet pipe passes through the tower body and is connected to a spray head. The spray head is located directly above the packing. The lower right side of the tower body is connected to a liquid outlet, one end of the liquid outlet is connected to a reboiler, the top of the reboiler is connected to a return air pipe, the end of the return air pipe is communicated with the lower right side of the tower body, and a filter screen is installed inside the filter chamber.

2. A distillation equipment for preparing triethylaluminum according to claim 1, characterized in that: A reflux valve and a liquid outlet valve are respectively provided at both ends of the liquid outlet pipe.

3. A distillation equipment for preparing triethylaluminum according to claim 1, characterized in that: The outlet end of the feed port is located between the two middle grid plates.

4. A distillation equipment for preparing triethylaluminum according to claim 1, characterized in that: The left end of the air return pipe is located just above the left end of the liquid outlet.

5. A distillation equipment for preparing triethylaluminum according to claim 1, characterized in that: The two fastening bolts pass through the left and right ends of the filter chamber from top to bottom respectively.

6. A distillation equipment for preparing triethylaluminum according to claim 1, characterized in that: The steam inlet pipe and the air return pipe are both located below the lower grid plate.

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