Copper wire packing rectifying tower for purifying high-purity titanium tetrachloride

Abstract

The utility model discloses a copper wire packing rectifying tower for purifying high-purity titanium tetrachloride. The rectifying tower comprises packing, tower sections, a tower kettle, a reboiler, a condenser, a tower top outlet pipeline, a liquid backflow pipeline, a feeding hole, a tower kettle outlet pipeline, a gas inlet pipeline, a plurality of upper tower plates and a plurality of lower tower plates, the filler is positioned in the tower section and is a copper wire filler; the copper wire packing is silk screen corrugated packing, the silk screen corrugated packing is formed by arranging silk screen pieces pressed into corrugations, the inclination angle of the corrugated silk screen pieces is 30 degrees or 45 degrees, the directions of every two adjacent silk screen pieces are opposite, and when the packing is filled in the rectifying tower, an upper disc of packing and a lower disc of packing are stacked in a 90-degree staggered mode. The rectifying tower disclosed by the utility model adopts the filler woven by the copper wires, and the filler is formed by arranging the wire mesh sheets pressed into corrugations, so that the corresponding number of tower plates of the rectifying tower is ensured, and the purity of the obtained titanium tetrachloride is also ensured to be higher; and the method has the advantages of high efficiency, low pressure drop and large flux.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, and particularly relates to a copper wire packing distillation column for purifying high-purity titanium tetrachloride. Background Art

[0002] Titanium tetrachloride, also known as titanium chloride, has the English name: titanium tetrachloride, the molecular formula of TiCl4, and is soluble in cold water, ethanol, and dilute hydrochloric acid. Titanium tetrachloride is a colorless or slightly yellowish liquid with a pungent sour taste and fumes in the air. It is an important intermediate for producing sponge titanium (raw materials for titanium products, etc.) and its compounds; it is the main raw material for producing titanium dioxide by the chloride process (used in industries such as dry coatings, plastics, inks, papermaking, and cosmetics), can be used as an important component of ethylene polymerization catalysts, can be used to manufacture pigments and titanium organic compounds, and smoke screens used in national defense, and can also be used as a good solvent for dissolving various organic substances such as synthetic resins, rubbers, and plastics.

[0003] With the continuous reduction of chip size, the control of chip process conditions has become more and more precise, and higher requirements have been put forward for the purity of titanium tetrachloride, and the upper limit of the impurity content has become more and more stringent. The purity of titanium tetrachloride will directly affect the mechanical properties of sponge titanium, especially impurity elements such as oxygen, nitrogen, iron, and silicon. Therefore, with the continuous development of the titanium industry and other related industries, the high purity and low metal content of titanium tetrachloride products will become an inevitable trend.

[0004] Most of the literature reports are about the production methods of titanium tetrachloride, and the distillation separation processes are all traditional methods with high energy consumption. The titanium tetrachloride distillation process proposed in the prior art 201010297323.3 is a single-tower continuous process, which is only applicable to raw materials with fewer light impurity components and has great difficulties in processing raw materials with complex components. It is very difficult to obtain high-purity titanium tetrachloride products in actual production; the titanium tetrachloride purification method proposed in the prior art 2001010161513.2 has a relatively complex process, the achievable purity of the product is unknown, and the energy consumption of the entire device is also relatively large. Overall, this process is relatively backward, resulting in unstable product quality.

[0005] With the continuous development of the titanium industry and other related industries, the demand for high-purity titanium tetrachloride is also increasing. Therefore, the economic and social benefits brought by the production of high-purity titanium tetrachloride will be more significant; accordingly, the utility model provides a copper wire packing distillation column for purifying high-purity titanium tetrachloride. Summary of the Utility Model

[0006] The utility model purpose of the present utility model is to provide a copper wire packing distillation column for purifying high-purity titanium tetrachloride to achieve the purification of high-purity titanium tetrachloride. To achieve the above purpose, the technical solution adopted by the present utility model is:

[0007] A copper wire packing distillation column for the purification of high-purity titanium tetrachloride. The distillation column includes a packing (1), column sections (2), a column still (3), a reboiler (5), a condenser (6), a top outlet pipe (7), a liquid reflux pipe (8), a feed inlet (9), a column still outlet pipe (10), a gas inlet pipe (11), a number of upper trays, and a number of lower trays. The packing (1) is located inside the column section (2), and the packing (1) is a copper wire packing. The copper wire packing is a wire mesh corrugated packing, which is formed by arranging corrugated wire mesh sheets. The inclination angle of the corrugated wire mesh sheets is 30 degrees or 45 degrees, and the directions of adjacent two wire mesh sheets are opposite. When the packing (1) is filled in the distillation column, the upper and lower trays of the packing (1) are stacked in a staggered manner at 90 degrees.

[0008] Preferably, the top outlet pipe (7) is connected to the condenser (6), and the condenser (6) is connected to the top of the column through the liquid reflux pipe (8).

[0009] Preferably, the column still outlet pipe (10) is connected to the reboiler (5), and the reboiler (5) is connected to the column still (3) through the gas inlet pipe (11).

[0010] Preferably, the feed inlet (9) is arranged below the column section (2).

[0011] Preferably, the upper trays and the lower trays are arranged at equal intervals inside the column.

[0012] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0013] 1. The present utility model can remove a large amount of impurities such as vanadium oxychloride and ferric chloride with boiling points close to that of titanium tetrachloride, and the obtained titanium tetrachloride has a higher purity and better purification effect.

[0014] 2. The distillation column of the present utility model uses a copper wire woven packing, and the packing of the present utility model is formed by arranging corrugated wire mesh sheets, which can not only ensure that the distillation column has the corresponding number of trays, but also ensure that the copper wire can remove impurities such as vanadium oxychloride and ferric chloride.

[0015] 3. The packing of the distillation column of the present utility model has the advantages of high efficiency, low pressure drop, and large throughput. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the copper wire packing distillation column for the purification of high-purity titanium tetrachloride in Embodiment 1 of the present utility model;

[0017] Figure 2 It is the front view of the packing of the copper wire packing distillation column in Embodiment 1 of the present utility model;

[0018] Figure 3 It is the top view of the packing of the copper wire packing rectification column in Embodiment 1 of the present utility model;

[0019] Among them, 1. Packing; 2. Tower section; 3. Tower kettle; 5. Reboiler; 6. Condenser; 7. Top outlet pipe; 8. Liquid reflux pipe; 9. Feed inlet; 10. Tower kettle outlet pipe; 11. Gas inlet pipe. Specific embodiments

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0022] Embodiment 1

[0023] As shown in the attached Figure 1 to the attached Figure 3 figures, this embodiment provides a copper wire packing rectification column for the purification of high-purity titanium tetrachloride. The rectification column includes a packing (1), a tower section (2), a tower kettle (3), a reboiler (5), a condenser (6), a top outlet pipe (7), a liquid reflux pipe (8), a feed inlet (9), a tower kettle outlet pipe (10), a gas inlet pipe (11), a plurality of upper tower plates, and a plurality of lower tower plates; the packing (1) is located inside the tower section (2), and the packing (1) is a copper wire packing; the copper wire packing is a wire mesh corrugated packing, and the wire mesh corrugated packing is formed by arranging corrugated wire mesh sheets. The inclination angle of the corrugated wire mesh sheets is 30 degrees or 45 degrees, and the directions of adjacent two wire mesh sheets are opposite. When the packing (1) is filled in the rectification column tower, the upper and lower trays of the packing (1) are stacked in a staggered manner at 90 degrees;

[0024] Further, the top outlet pipe (7) is connected to the condenser (6), and the condenser (6) is connected to the top of the tower through the liquid reflux pipe (8);

[0025] Further, the tower kettle outlet pipe (10) is connected to the reboiler (5), and the reboiler (5) is connected to the tower kettle (3) through the gas inlet pipe (11);

[0026] Furthermore, the feed inlet (9) is arranged below the tower section (2).

[0027] Furthermore, both the upper tower plate and the lower tower plate are arranged at equal intervals inside the tower body.

[0028] After multiple purifications and detection of the purified high-purity titanium tetrachloride product, it is found that the present utility model can largely remove impurities such as vanadium oxychloride and ferric chloride with boiling points close to that of titanium tetrachloride, resulting in higher purity of the obtained titanium tetrachloride and better purification effect. The rectifying column of the present utility model uses copper wire woven packing, and the packing of the present utility model is arranged by arranging corrugated wire mesh sheets, which can not only ensure that the rectifying column has the corresponding number of tower plates, but also ensure that the copper wire can remove impurities such as vanadium oxychloride and ferric chloride. The packing of the rectifying column of the present utility model has the advantages of high efficiency, low pressure drop and large throughput.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to the above embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the above embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A copper wire packing distillation column for the purification of high-purity titanium tetrachloride, characterized in that, The rectifying column includes packing (1), tower sections (2), a tower kettle (3), a reboiler (5), a condenser (6), a top outlet pipe (7), a liquid reflux pipe (8), a feed inlet (9), a tower kettle outlet pipe (10), a gas inlet pipe (11), a number of upper trays, and a number of lower trays; the packing (1) is located inside the tower section (2), and the packing (1) is copper wire packing; the copper wire packing is wire mesh corrugated packing, and the wire mesh corrugated packing is formed by arranging corrugated wire mesh sheets, the inclination angle of the corrugated wire mesh sheets is 30 degrees or 45 degrees, the directions of adjacent two wire mesh sheets are opposite, and when the packing (1) is filled in the rectifying column tower, the upper and lower trays of packing (1) are stacked staggeredly at 90 degrees.

2. The copper wire packing distillation column for purifying high-purity titanium tetrachloride according to claim 1, wherein The top outlet pipe (7) is connected to the condenser (6), and the condenser (6) is connected to the top of the tower through the liquid reflux pipe (8).

3. The copper wire packing distillation column for purifying high-purity titanium tetrachloride according to claim 1, wherein, The tower kettle outlet pipe (10) is connected to the reboiler (5), and the reboiler (5) is connected to the tower kettle (3) through the gas inlet pipe (11).

4. The copper wire packing distillation column for high-purity titanium tetrachloride purification according to claim 1, characterized in that, The feed inlet (9) is arranged below the tower section (2).

5. The copper wire packing distillation column for purifying high-purity titanium tetrachloride according to claim 1, wherein The upper trays and the lower trays are both arranged at equal intervals inside the tower body.

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