Adsorption column

Abstract

The utility model provides an anti-disproportionated resin adsorption column, which relates to the technical field of polycrystalline silicon, and comprises a shell, a plurality of resin adsorption columns and a plurality of resin adsorption columns, a resin filling area is arranged between the material inlet and the material outlet, and the resin filling area is communicated with the resin inlet; the feeding distributor is connected with the material inlet; the discharge distributor is connected with the material outlet; wherein the feeding distributor comprises a feeding main pipe, a plurality of feeding distribution holes are uniformly distributed in the feeding main pipe, and feeding wedge-shaped wire filter pipes are in threaded connection with the feeding distribution holes and are fixedly welded to the feeding distribution holes. An original water cap is changed into the wedge-shaped wire filter pipe, so that the phenomenon of loss of resin is effectively reduced, the filter area is increased, and local pressure drop is also reduced. The feeding wedge-shaped wire filter pipe and the discharging wedge-shaped wire filter pipe are mounted in a welding manner, so that the loss amount of resin is reduced, the purchasing and filling cost of the resin is saved, and the maintenance frequency of downstream equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polysilicon, in particular to an adsorption column. Background Art

[0002] See also Figure 1 At present, the polysilicon anti-disproportionation resin adsorption column adopts the filling method to fill the resin. The chlorosilane liquid phase enters the equipment from the lower pipe and is discharged from the adsorption column from the upper pipe. The upper and lower pipes adopt a distribution pipe structure, and a water cap is arranged on the distribution pipe. On the one hand, it plays the role of evenly distributing the chlorosilane, and on the other hand, it aims to prevent the resin particles from leaking out in the opposite direction.

[0003] The current polysilicon anti-disproportionation resin adsorption column has the following problems during use:

[0004] 1. The filtering area of ​​the water cap is too small, resulting in excessive local pressure drop.

[0005] 2. The water cap is installed by riveting. When the pressure difference is too large, some resin particles with smaller particle size (broken, powdered) pass through the installation gap of the water cap, causing resin leakage and loss.

[0006] 3. The drainage port at the bottom of the adsorption column and the vent at the top are made of a wire mesh structure, which is easy to fall off, causing local resin to escape from the above-mentioned pipe ports. A large amount of resin was found in the downstream equipment such as the filter and shielded pump connected to the chlorosilane liquid phase outlet, which not only caused a lot of clearing work, but also increased the cost of resin procurement, and also caused serious wear and tear on the flow components of the shielded pump in the downstream process of the equipment, affecting the stable operation of the production device.

[0007] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0008] In view of the above situation, the utility model provides an anti-disproportionation resin adsorption column, aiming to solve at least one problem pointed out in the above background technology.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] The utility model provides an adsorption column, comprising:

[0011] The shell has a material inlet, a material outlet and a resin inlet; a resin filling area is provided between the material inlet and the material outlet, and the resin filling area is connected to the resin inlet;

[0012] A feed distributor connected to the material inlet;

[0013] A material distributor connected to the material outlet;

[0014] The feed distributor comprises a feed main pipe, on which a plurality of feed distribution holes are evenly distributed, and feed wedge-shaped wire filter tubes are welded at the feed distribution holes.

[0015] In some embodiments of the present invention, six feed wedge-shaped wire filter tubes are arranged at intervals on opposite sides of the feed main pipe.

[0016] In some embodiments of the present invention, the inner diameter of the feed wedge wire filter tube is equivalent to the diameter of the feed distribution hole.

[0017] In some embodiments of the present invention, the discharge distributor includes a discharge main pipe, on which a plurality of discharge distribution holes are evenly distributed, and the discharge distribution holes are connected to a discharge wedge-shaped wire filter tube.

[0018] In some embodiments of the utility model, the discharge wedge-shaped filter tube is threadedly connected to the discharge main pipe and fixed by welding.

[0019] In some embodiments of the present invention, the inner diameter of the discharge wedge-shaped wire filter tube is equivalent to the diameter of the discharge distribution hole.

[0020] In some embodiments of the present invention, the shell further has a shower outlet.

[0021] In some embodiments of the present invention, a Johnson screen is provided on the shower outlet.

[0022] In some embodiments of the present invention, the shell further has a vent.

[0023] In some embodiments of the present invention, a Johnson screen is provided on the vent.

[0024] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0025] 1. Changing the original water cap to a wedge-shaped wire filter tube (feed wedge-shaped wire filter tube and discharge wedge-shaped wire filter tube) effectively reduces the resin loss phenomenon, increases the filtration area, and reduces the local pressure drop.

[0026] 2. The feed wedge wire filter tube and the discharge wedge wire filter tube are installed by threaded connection and welding, which reduces the amount of resin loss, saves resin procurement and filling costs, and reduces the frequency of maintenance of downstream equipment.

[0027] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of an existing adsorption column;

[0030] Figure 2 This is a schematic diagram of the structure of the existing shower outlet using a wire mesh;

[0031] Figure 3 A schematic diagram of the structure of the adsorption column provided in the embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of a feed distributor provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of a Johnson screen tube provided in a shower outlet provided in an embodiment of the present application.

[0034] icon:

[0035] 1-shell, 11-material inlet, 12-material outlet, 13-resin inlet, 14-drain port, 15-drain port, 16-drain port, 17-manhole,

[0036] 2-feed distributor, 21-feed main pipe, 22-feed distribution hole, 23-feed wedge wire filter tube,

[0037] 3-Discharge distributor,

[0038] 4- Johnson sieve tube,

[0039] 51- water cap, 52- screen. DETAILED DESCRIPTION

[0040] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0041] In the description of the embodiments of the present invention, it should be understood that the term "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0042] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0043] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0044] See also Figure 1 to Figure 5 This embodiment provides an adsorption column, including a shell 1, a feed distributor 2 and a discharge distributor 3.

[0045] The shell 1 is provided with a material inlet 11, a material outlet 12, a resin inlet 13, a drain port 14, a shower port 15, a vent port 16 and a manhole 17. The material inlet 11 is used to introduce liquid chlorosilane, and a resin filling area is provided between the material inlet 11 and the material outlet 12, and the resin filling area is connected to the resin inlet 13. The drain port 14 and the shower port 15 are located at the lower part of the shell 1. The vent port 16 is located at the top of the shell 1. The top and the lower part of the shell 1 are provided with manholes 17.

[0046] A Johnson screen tube 4 is provided on the vent port 16 and the shower guide port 15 to replace the original coated wire mesh 52 . The structure of the Johnson screen tube 4 is more reliable and not easy to fall off, so as to prevent the resin from escaping from the vent port 16 and the shower guide port 15 .

[0047] The feed distributor 2 is located below the resin loading area and connected to the material inlet 11. The feed distributor 2 includes a feed main pipe 21, on which a plurality of feed distribution holes 22 are evenly distributed, and the feed distribution holes 22 are connected to a feed wedge wire filter tube 23, and a plurality of feed wedge wire filter tubes 23 are evenly distributed on the main pipe. Based on the structural characteristics of the feed wedge wire filter tube 23, it can evenly distribute the material during feeding and prevent the resin from running away, and also has the advantages of large filtering area and small local pressure drop.

[0048] In a specific implementation scenario, six feed wedge-shaped wire filter tubes 23 are arranged at intervals on opposite sides of the feed main pipe 21 to evenly distribute the material during feeding.

[0049] In a specific implementation scenario, the feed wedge wire filter tube 23 is welded to the feed main pipe 21, and there is no installation gap. The resin will not escape from the welding point, and this connection method is also safer and more reliable.

[0050] In a specific implementation scenario, the inner diameter of the feed wedge-shaped wire filter tube 23 is equivalent to (equal to or substantially equal to) the diameter of the feed distribution hole 22, and a full-diameter method is adopted to improve material flowability.

[0051] The discharge distributor 3 is set with reference to the feed distributor 2. The discharge distributor 3 is located above the resin loading area and connected to the material outlet 12. The discharge distributor 3 includes a discharge main pipe, on which a plurality of discharge distribution holes are evenly distributed, and the discharge distribution holes are connected to a discharge wedge wire filter tube, and a plurality of discharge wedge wire filter tubes are evenly distributed on the main pipe. Based on the structural characteristics of the discharge wedge wire filter tube, it can evenly distribute the material during discharge and prevent the resin from running away, and also has the advantages of large filtering area and small local pressure drop.

[0052] In a specific implementation scenario, six discharge wedge-shaped wire filter tubes are arranged at intervals on opposite sides of the discharge main pipe, so as to evenly distribute the material during discharge.

[0053] In a specific implementation scenario, the discharge wedge wire filter tube is threadedly connected to the discharge main pipe and fixed by welding. There is no installation gap, and the resin will not escape from the welding point. This connection method is also safer and more reliable.

[0054] In a specific implementation scenario, the inner diameter of the discharge wedge-shaped wire filter tube is equivalent to (equal or substantially equal to) the diameter of the discharge distribution hole, and a full-diameter method is adopted to improve material flowability.

[0055] In combination with the above content, this embodiment has at least the following beneficial effects:

[0056] 1. The original water cap 51 is replaced with a wedge-shaped wire filter tube (feed wedge-shaped wire filter tube 23 and discharge wedge-shaped wire filter tube), which effectively reduces the resin loss phenomenon, increases the filtration area, and reduces the local pressure drop.

[0057] 2. The feed wedge-shaped wire filter tube 23 and the discharge wedge-shaped wire filter tube are installed by threaded connection and welding, which reduces the amount of resin loss, saves resin procurement and filling costs, and reduces the frequency of maintenance of downstream equipment.

[0058] 3. The inner diameter of the feed wedge-shaped wire filter tube 23 is equivalent to (equal to or substantially equal to) the diameter of the feed distribution hole 22, and a full-diameter method is adopted, so that the material flowability is better.

[0059] Fourth, the vent port 16 and the shower port 15 are provided with a Johnson screen 4 to replace the original coated wire mesh 52. The structure of the Johnson screen 4 is more reliable and not easy to fall off, so as to prevent the resin from escaping from the vent port 16 and the shower port 15.

[0060] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. In the absence of conflicts, the embodiments of the present application and the features in the embodiments may be combined with each other at will. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adsorption column, characterized in that: include: The housing has a material inlet, a material outlet and a resin inlet; a resin filling area is provided between the material inlet and the material outlet, and the resin filling area is communicated with the resin inlet; A feed distributor connected to the material inlet; A material distributor connected to the material outlet; Wherein, the feed distributor comprises a feed main pipe, on which a plurality of feed distribution holes are evenly distributed, and feed wedge-shaped wire filter tubes are welded at the feed distribution holes.

2. The adsorption column according to claim 1, characterized in that: Six feed wedge-shaped wire filter tubes are arranged at intervals on opposite sides of the feed main pipe.

3. The adsorption column according to claim 1, characterized in that: The inner diameter of the feed wedge-shaped wire filter tube is equivalent to the diameter of the feed distribution hole.

4. The adsorption column according to claim 1, characterized in that: The material discharging distributor comprises a material discharging main pipe, on which a plurality of material discharging distribution holes are evenly distributed, and the material discharging distribution holes are connected to a material discharging wedge-shaped wire filter tube.

5. The adsorption column according to claim 4, characterized in that: The discharge wedge-shaped filter tube is threadedly connected to the discharge main pipe and fixed by welding.

6. The adsorption column according to claim 4, characterized in that: The inner diameter of the discharge wedge-shaped wire filter tube is equivalent to the diameter of the discharge distribution hole.

7. The adsorption column according to claim 1, characterized in that: The shell also has a shower outlet.

8. The adsorption column according to claim 7, characterized in that: A Johnson screen tube is arranged on the shower outlet.

9. The adsorption column according to claim 1, characterized in that: The housing also has a vent.

10. The adsorption column according to claim 9, characterized in that: A Johnson screen is provided on the vent.

Images