A titanium reactor with reduced low-boiling impurities at the large lid flange and methods of use thereof

Abstract

The application provides a titanium reactor for reducing low-boiling-point impurities at a large cover flange and a use method thereof. The titanium reactor for reducing low-boiling-point impurities at a large cover flange comprises a hollow structure with an open top, a cylinder body, a large cover connected to the top of the cylinder body, a first through hole provided on the large cover along an axial direction, a second through hole cavity provided in a radially direction in a lower convex head of the large cover, and a first through hole communicated with the second through hole cavity; a center tube communicated with an inner cavity of the cylinder body through the first through hole, a distillation tube provided in the second through hole cavity, a heating device provided between the distillation tube and the second through hole cavity, and the distillation tube communicated with the center tube. The application forms two distillation paths in the reactor by adding a transverse distillation channel to the head of the large cover, so that effective distillation of the part below the head of the large cover in the reactor is ensured, and condensation and accumulation of low-boiling-point substances between the head of the large cover and the wall of the reactor are avoided, thereby improving the distillation efficiency and avoiding pollution of products caused by opening the cover.

Description

Technical Field

[0001] This invention relates to the field of sponge titanium production technology, and in particular to a titanium reactor and its method of use for reducing low-boiling-point impurities at the large flange. Background Technology

[0002] Titanium, due to its low density, high specific strength, good biocompatibility, and excellent corrosion resistance, is widely used in aerospace, biomedicine, petrochemicals, and marine engineering. Sponge titanium, as an important raw material for titanium processed materials, is currently mainly produced using the magnesium reduction-distillation method. Magnesium chloride is a byproduct of sponge titanium production. The presence of magnesium chloride and magnesium in sponge titanium can seriously damage the pressing electrodes and vacuum melting process, thus significantly impacting the sales and use of sponge titanium.

[0003] Currently, the magnesiac process for producing sponge titanium mainly uses two types of furnaces: the "I"-type furnace and the inverted "U"-type furnace. Both types of equipment require vacuum distillation to remove residual magnesium and magnesium chloride from the titanium lumps during production. During distillation, these low-boiling-point substances pass through the distillation channel from the hot end of the reactor to the cold end, thus removing low-boiling-point impurities from the titanium lumps. For the inverted "U"-type furnace, a sealing head is added to the lower part of the hot end cover for insulation to reduce its temperature. The gap between the sealing head and the reactor wall is a distillation dead zone. Magnesium, magnesium chloride, and low-valent titanium in this area cannot be distilled into the cold end and remain on the reactor wall and flange surface. This not only easily falls into the titanium lumps and contaminates the product when the cover is opened, but also poses a safety risk because the low-valent titanium and magnesium powder present at the flange of the cover can easily ignite and burn the titanium lumps.

[0004] Patent No. CN105925820B discloses a tubular heat exchanger with an inert coating and its application in the production of sponge titanium. The tubular heat exchanger with an inert coating comprises a tubular heat exchanger, an inert coating, and a circulating liquid cooling medium within it. The tubular heat exchanger with the inert coating is vertically installed on the top cover of a reduction furnace reactor, with its bottom extending below the initial liquid level of the reducing agent, metallic magnesium, and its upper part extending from the reactor top cover as the inlet and outlet of the cooling medium. This invention prevents direct contact between the metal surface of the tubular heat exchanger and the internal atmosphere of the reactor by providing an inert coating outside the heat exchanger; it also prevents the growth, deposition, and adhesion of newly formed titanium crystals on the metal surface of the tubular heat exchanger.

[0005] However, existing technologies cannot solve the problem of low-boiling-point impurities remaining in the gap between the large cap and the reactor wall during the vacuum distillation stage, which easily contaminates the titanium agglomerate during the reactor opening process.

[0006] Meanwhile, the residual low-priced titanium at the end cap also poses a fire risk and could easily lead to safety accidents. Summary of the Invention

[0007] In view of this, the present invention aims to propose a titanium reactor and its method of use for reducing low-boiling-point impurities at the large flange, to solve the problem of low-boiling-point impurities remaining in the gap between the end cap and the reactor wall during the production of sponge titanium, to avoid contaminating the titanium mass, and to reduce the ignition risk of low-boiling-point substances.

[0008] Traditional inverted "U"-shaped reactors used in sponge titanium production have only one central pipe connecting the reactor's main cap to the interior as a distillation channel. While this channel serves as an effective distillation route for the area below the main cap, the space between the main cap and the reactor wall is a dead zone for distillation. During distillation, this zone becomes a solidification and accumulation site for low-boiling-point impurities (magnesium and magnesium chloride), and a large amount of unreacted low-valence titanium remains at the flange location. When the reactor is opened, the accumulated magnesium and magnesium chloride in this area will detach in large quantities and introduce titanium lumps. Furthermore, the low-valence titanium remaining at the flange also poses a fire risk, not only contaminating the product but also creating safety hazards.

[0009] This invention addresses the issue of low-boiling-point impurities easily falling into the titanium slab during the opening and removal of the titanium slab in traditional sponge titanium production equipment, which also poses a risk of ignition. It proposes a device that effectively improves the distillation efficiency of low-boiling-point substances in the dead zone at the top of the reactor. This device prevents low-boiling-point substances from falling into the titanium slab and reduces the risk of ignition, thus effectively improving product quality and mitigating safety risks.

[0010] The device of this invention includes a large end cap, a connecting channel, a resistance wire, and a heat insulation layer. The main feature of this device is that, based on an inverted "U"-shaped furnace, a distillation channel is added to the large end cap. An electromagnetic induction heating coil is equipped on the outside of the channel to heat the connecting channel during distillation, preventing the solidification of low-boiling-point substances between the large end cap and the reactor wall. Low-boiling-point substances between the large end cap and the reactor wall can be distilled out of the reactor through the newly added distillation channel. By adding a distillation channel to the large end cap, independent distillation channels are formed between the large end cap and the upper reactor wall, and between the large end cap and the titanium agglomerate inside the reactor, thus preventing the solidification and accumulation of low-boiling-point substances between the large end cap and the reactor wall.

[0011] The technical solution of the present invention is implemented as follows: a titanium reactor for reducing low-boiling-point impurities at the flange of the large cover, comprising a cylinder, a large cover, a distillation tube, a heating device and a central tube;

[0012] The cylinder is a hollow structure with an open top, used to store the titanium ingots that have been produced.

[0013] The top of the cylinder is connected to the large cover to seal the cylinder;

[0014] The large cover has a first through hole along the axial direction, and the protruding end cap of the large cover has a second through hole cavity. The axial direction of the second through hole cavity is perpendicular to the axial direction of the large cover, and the first through hole communicates with the second through hole cavity.

[0015] The central tube passes through the first through hole and communicates with the internal cavity of the cylinder, and is used to distill out the volatiles inside the cylinder;

[0016] The distillation tube is disposed in the second through-hole cavity, and the heating device is disposed between the distillation tube and the second through-hole cavity. The distillation tube is connected to the central tube.

[0017] Furthermore, the second through-hole cavity is radially arranged along the convex end cap of the large cover, and at least two second through-hole cavities are provided, which are evenly distributed within the end cap of the large cover.

[0018] Furthermore, at least four distillation tubes are provided, the length of which is less than half the length of the second through-hole cavity, and the distillation tubes are circumferentially and uniformly installed inside the end cap of the large cover.

[0019] Furthermore, the distillation tube is a carbon steel tube.

[0020] Furthermore, the heating device is an induction heating coil.

[0021] Furthermore, an insulation layer is provided between the distillation tube and the heating device for heat preservation and insulation of the distillation tube.

[0022] Furthermore, it also includes a temperature sensor for detecting the temperature of the distillation tube.

[0023] Another objective of this invention discloses a method for using a titanium reactor to reduce low-boiling-point impurities at the large flange. Based on any of the above-mentioned titanium reactors for reducing low-boiling-point impurities at the large flange, the specific steps are as follows:

[0024] S1: Production preparation; Place the raw materials for the reduction reaction into the cylinder, then ensure that the large cover is sealed to the top of the cylinder, connect the end of the central tube away from the cylinder to the subsequent equipment, and adjust various process parameters;

[0025] S2: Heating the distillation tube; When titanium production enters the vacuum distillation stage and the passage heater heats up, the heating device is activated to quickly raise the temperature of the distillation tube to the preset temperature;

[0026] S3: Heat preservation stage; When the temperature sensor detects that the temperature inside the distillation tube has reached the preset temperature, the temperature is maintained for a period of time. The low-boiling-point substance between the large cover head and the reactor wall flows into the central tube through the distillation tube, and then the low-boiling-point substance is discharged from the reactor.

[0027] S4: After distillation is complete, turn off the heating device.

[0028] Furthermore, in step S2, when the temperature of the distillation tube reaches the preset temperature, the temperature of the distillation tube is consistent with the temperature of the passage heater, and the temperature between the large cover head and the inner wall of the cylinder is higher than the boiling point of the low-boiling-point substance.

[0029] Furthermore, in step S3, when the temperature sensor detects that the temperature inside the distillation tube is lower than the preset temperature, the heating device starts heating to ensure that the temperature inside the distillation tube is stable at the preset temperature.

[0030] Compared with the prior art, the titanium reactor and its method of use for reducing low-boiling-point impurities at the large flange of the present invention have the following advantages:

[0031] 1. This invention adds a transverse distillation channel to the large cap head, forming two distillation paths within the reactor. This ensures effective distillation of the area below the large cap head while preventing the condensation and accumulation of low-boiling-point substances between the large cap head and the reactor wall, thereby improving distillation efficiency and preventing product contamination from opening the cap.

[0032] 2. This invention sets up a distillation channel and controls the temperature separately. During the distillation process, it serves as a distillation channel for volatiles between the large cap and the reactor wall. The temperature in this area needs to be higher than the boiling point of these low-boiling-point substances to ensure the smooth progress of distillation.

[0033] 3. The device of this invention can reduce the accumulation of low-priced titanium and low-boiling-point substances at the flange, making the opening process faster and safer, and also avoiding contamination of the titanium lumps when opening the lid. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0035] Figure 1 A schematic diagram of the overall structure of the device in this invention;

[0036] Figure 2 Left view of the device cover in this invention;

[0037] Figure 3 Cross-sectional view of the distillation channel in this invention;

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Cylinder body; 2. Cover; 201. First through hole; 202. Second through hole cavity; 3. Distillation tube; 4. Heating device; 5. Central tube; 6. Temperature sensor; 7. Insulation layer. Detailed Implementation

[0040] To make the technical means and objectives and effects of the present invention easier to understand, the embodiments of the present invention will be described in detail below with reference to specific illustrations.

[0041] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state. They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] This invention discloses a titanium reactor for reducing low-boiling-point impurities at the flange of the large cover, comprising a cylinder 1, a large cover 2, a distillation tube 3, a heating device 4, and a central tube 5;

[0045] The cylinder 1 is a hollow structure with an open top, used to store the titanium ingots that have been produced.

[0046] The top of the cylinder 1 is connected to the large cover 2 to seal the cylinder 1;

[0047] The large cover 2 is provided with a first through hole 201 along the axial direction, and a second through hole cavity 202 is provided in the protruding end cap of the large cover 2. The axial direction of the second through hole cavity 202 is perpendicular to the axial direction of the large cover 2, and the first through hole 201 and the second through hole cavity 202 are connected.

[0048] The central tube 5 passes through the first through hole 201 and communicates with the internal cavity of the cylinder 1, and is used to distill out the volatiles inside the cylinder 1;

[0049] The distillation tube 3 is installed inside the second through-hole cavity 202, and a heating device 4 is installed between the distillation tube 3 and the second through-hole cavity 202. The distillation tube 3 is connected to the central tube 5.

[0050] This setup heats the distillation tube 3 by activating the heating device 4. The gas inside the distillation tube 3 is heated to a higher temperature, causing the temperature between the end cap of the large cover 2 and the inner wall of the cylinder 1 to be higher than the boiling point of these low-boiling-point substances. This prevents low-boiling-point substances from accumulating and solidifying between the end cap of the large cover 2 and the inner wall of the cylinder 1 during the production of sponge titanium. As a result, during the process of opening the reactor lid, a large amount of accumulated low-boiling-point substances, such as magnesium and magnesium chloride, fall off and contaminate the titanium lumps. At the same time, it can also reduce the ignition risk of low-boiling-point substances, which can effectively improve product quality and avoid potential safety risks.

[0051] Specifically, there is a flange connection between the cylinder 1 and the large cover 2. This connection structure is easy to disassemble, has high strength, good sealing performance, and can withstand high pressure, meeting the requirements of the titanium production process.

[0052] Specifically, the second through-hole cavity 202 is radially arranged along the convex end cap of the large cover 2, and at least two second through-hole cavities 202 are provided, which are evenly distributed circumferentially within the end cap of the large cover 2. This arrangement of multiple second through-hole cavities 202 allows for the installation of multiple distillation tubes 3, resulting in a uniform temperature increase between the large cover end cap and the reactor wall; simultaneously, it reduces the weight of the large cover, saves materials, improves the overall structural stability of the device, and helps reduce costs.

[0053] Preferably, two second through holes 202 are provided, and the two second through holes 202 are vertically distributed.

[0054] Specifically, at least four distillation tubes 3 are provided, each with a length half the length of the second through-hole cavity 202. The distillation tubes 3 are evenly installed circumferentially within the end cap of the large cover 2. This arrangement of multiple distillation tubes 3, evenly distributed within the end cap, ensures a uniform temperature increase between the end cap of the large cover 2 and the inner wall of the cylinder 1. This prevents temperatures at individual locations from falling below the boiling points of low-boiling-point substances like magnesium and magnesium chloride, which could cause them to accumulate between the end cap of the large cover 2 and the inner wall of the cylinder 1. During reactor opening, this accumulation of low-boiling-point substances would then detach and contaminate the titanium agglomerate. Furthermore, it reduces the ignition risk of low-boiling-point substances, effectively improving product quality and mitigating potential safety hazards.

[0055] Preferably, the ratio of the second through-hole cavity 202 to the distillation tube 3 is 2:1, and the length of the distillation tube 3 is slightly shorter than the radius of the second through-hole cavity 202 to prevent the distillation tube 3 from blocking the first through-hole 201. This arrangement ensures the unobstructed flow of the first through-hole 201 and avoids affecting the discharge of volatile substances from the reactor.

[0056] Specifically, distillation tube 3 is made of carbon steel. The carbon steel material of distillation tube 3 allows for rapid and uniform heat transfer to the internal gas, improving the uniformity and efficiency of the heating process. Simultaneously, carbon steel possesses high strength and corrosion resistance, enabling it to withstand high operating temperatures and pressures, thus ensuring stable operation and extending the equipment's service life.

[0057] Specifically, heating device 4 is an induction heating coil. This setup requires no pre-heating preparation, is ready to use immediately, heats up quickly and efficiently, is easy to automate, and helps improve production efficiency.

[0058] Specifically, an insulation layer 7 is provided between the distillation tube 3 and the heating device 4 for heat preservation and insulation of the distillation tube 3. This insulation layer 7 can effectively prevent heat from being transferred outward, thereby ensuring that more heat is used to heat the distillation tube 3 and its internal medium, ensuring heating uniformity, and preventing the heating device 4 from overheating.

[0059] Specifically, insulation layer 7 is made of insulating rock wool. This insulation material has excellent thermal insulation performance, fire resistance, can withstand high temperatures, has strong compressive strength, high stability, good processing performance, and low cost.

[0060] Specifically, it also includes a temperature sensor 6 for detecting the temperature of the distillation tube 3. This temperature sensor 6 detects the temperature of the distillation channel, which allows the operator to control the temperature of the distillation channel, ensuring the internal temperature of the distillation tube 3 and preventing the temperature between the end cap 2 and the inner wall of the cylinder 1 from falling below the boiling point of these low-boiling-point substances, thus preventing the low-boiling-point substances from accumulating and solidifying between the end cap 2 and the inner wall of the cylinder 1.

[0061] Specifically, temperature sensor 6 is mounted on the large cover 2. This mounting allows temperature sensor 6 to better detect the temperature of the distillation channel inside the reactor cover, while also facilitating the installation and maintenance of temperature sensor 6.

[0062] Preferably, the temperature sensor 6 is a thermocouple. The advantages of using a thermocouple sensor in this setup are: ease of manufacture, simple structure, high accuracy, very large measurement range, low inertia, and ability to transmit signals over long distances.

[0063] Specifically, the heating device 4 is tightly fitted to the inner wall of the second through-hole cavity 202. This arrangement ensures that the heating device 4 and the distillation tube 3 are securely installed in the second through-hole cavity 202, preventing the heating device 4 and the distillation tube 3 from falling off due to reactor vibration, thus helping to improve the structural stability and reliability of the reactor.

[0064] A method for using a titanium reactor to reduce low-boiling-point impurities at the large flange, comprising the following specific steps:

[0065] S1: Production preparation; Place the raw materials for the reduction reaction into cylinder 1, then ensure that the large cover 2 is sealed to the top of cylinder 1, connect the end of the central tube 5 away from cylinder 1 to the subsequent equipment, and adjust various process parameters.

[0066] S2: Heating distillation tube 3; When titanium production enters the vacuum distillation stage, the heating device 4 is activated when the aisle heater heats up, quickly raising the temperature of distillation tube 3 to the preset temperature.

[0067] S3: Heat preservation stage; When the temperature sensor 6 detects that the temperature inside the distillation tube 3 has reached the preset temperature, the temperature is maintained for a period of time. The low-boiling-point substance between the large cover head and the reactor wall flows into the central tube 5 through the distillation tube 3, and then the low-boiling-point substance is discharged from the reactor.

[0068] S4: After distillation is complete, turn off heating device 4.

[0069] This setup prevents low-boiling-point substances that distill and evaporate into the space between the cap 2 and the inner wall of the cylinder 1 from accumulating and solidifying. Under the heating of the heating device 4, the internal temperature of the distillation tube 3 is higher than the boiling point of the low-boiling-point substances. These substances then enter the central tube 5 through the internal cavity of the distillation tube 3 and are discharged from the reactor. This prevents the accumulation and solidification of low-boiling-point substances between the cap 2 and the inner wall of the cylinder 1, thus avoiding the large-scale shedding of accumulated low-boiling-point substances such as magnesium and magnesium chloride during reactor opening and preventing contamination of the titanium lumps. Simultaneously, it reduces the ignition risk of low-boiling-point substances, effectively improving product quality and mitigating safety hazards.

[0070] Specifically, in step S2, when the temperature of the distillation tube 3 reaches the preset temperature, the temperature of the distillation tube 3 is the same as the temperature of the passage heater, and the temperature between the end cap 2 and the inner wall of the cylinder 1 is higher than the boiling point of the low-boiling-point substance. This setting ensures that the temperature of the distillation tube 3 is the same as that of the passage heater, so that the low-boiling-point impurities in the titanium agglomerate can be heated and converted into a gaseous state, and completely discharged through the central tube 5.

[0071] Specifically, in step S2, the reactor is kept under vacuum. This setup improves distillation efficiency, reduces energy consumption during production, and extends the lifespan of the equipment.

[0072] Specifically, in step S3, when the temperature sensor 6 detects that the temperature inside the distillation tube 3 is lower than the preset temperature, the heating device 4 starts heating to ensure that the temperature inside the distillation tube 3 remains stable at the preset temperature. This setting enables real-time monitoring of the temperature inside the distillation tube 3. By controlling the start and stop of the heating device, it ensures that the temperature between the end cap of the large cover 2 and the inner wall of the cylinder 1 is higher than the boiling point of the low-boiling-point substance, thus preventing the accumulation of low-boiling-point substances, improving the product quality of titanium lumps, and reducing safety risks.

[0073] Example 1

[0074] The cylinder 1 has a cylindrical cross-section and is made of stainless steel and carbon steel composite plate. The outer layer is composite plate and the inner layer is carbon steel. During use, the reactor is heated by external heating. The reactor is placed on the flange of the vacuum resistance furnace. A sealing gasket is installed above the flange. The evaporator is pressed onto the vacuum resistance furnace by its own weight to form a sealed cavity. The large cover 2 has a second through hole 202 that is perpendicular to each other. Four distillation tubes 3 are installed in the second through hole 202. The distillation tubes 3 are made of carbon steel and are wrapped with insulating rock wool. An induction heating coil is installed on the outside of the insulation layer 7. The temperature sensor 6 is a thermocouple.

[0075] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A titanium reactor for reducing low-boiling-point impurities at the large flange, characterized in that, It includes a cylinder (1), a large cover (2), a distillation tube (3), a heating device (4), and a central tube (5); The cylinder (1) is a hollow structure with an open top, used to store the titanium lumps that have been produced. The top of the cylinder (1) is connected to the large cover (2) for sealing the cylinder (1). The cover (2) is provided with a first through hole (201) along the axial direction, and a second through hole cavity (202) is provided in the protruding end cap of the cover (2). The axial direction of the second through hole cavity (202) is perpendicular to the axial direction of the cover (2). The first through hole (201) communicates with the second through hole cavity (202). The second through hole cavity (202) is arranged radially along the protruding end cap of the cover (2). At least two second through hole cavities (202) are provided. The second through hole cavities (202) are evenly distributed in the end cap of the cover (2). The central tube (5) passes through the first through hole (201) and communicates with the internal cavity of the cylinder (1) to distill out the volatiles inside the cylinder (1); The distillation tube (3) is disposed in the second through hole cavity (202), and the heating device (4) is disposed between the distillation tube (3) and the second through hole cavity (202). The distillation tube (3) is connected to the central tube (5). At least four distillation tubes (3) are provided. The length of the distillation tube (3) is less than half the length of the second through hole cavity (202). The distillation tubes (3) are uniformly installed circumferentially in the end cap of the large cover (2).

2. The titanium reactor for reducing low-boiling-point impurities at the large flange according to claim 1, characterized in that, The distillation tube (3) is a carbon steel tube.

3. The titanium reactor for reducing low-boiling-point impurities at the large flange according to claim 1, characterized in that, The heating device (4) is an induction heating coil.

4. The titanium reactor for reducing low-boiling-point impurities at the large cover flange according to claim 3, characterized in that, A heat insulation layer (7) is provided between the distillation tube (3) and the heating device (4) for heat insulation of the distillation tube (3).

5. The titanium reactor for reducing low-boiling-point impurities at the large cover flange according to claim 1, characterized in that, It also includes a temperature sensor (6) for detecting the temperature of the distillation tube (3).

6. A method for using a titanium reactor to reduce low-boiling-point impurities at the large flange, characterized in that, The specific steps for the titanium reactor for reducing low-boiling-point impurities at the large flange as described in any of claims 1-5 are as follows: S1: Production preparation; put the raw materials for the reduction reaction into the cylinder (1), and then ensure that the large cover (2) is sealed to the top of the cylinder (1), and connect the end of the central tube (5) away from the cylinder (1) to the subsequent equipment, and adjust various process parameters; S2: Heat the distillation tube (3); When titanium production enters the vacuum distillation stage and the passage heater heats up, start the heating device (4) to quickly raise the temperature of the distillation tube (3) to the preset temperature; S3: Heat preservation stage; when the temperature sensor (6) detects that the temperature inside the distillation tube (3) has reached the preset temperature, the temperature is maintained for a period of time, and the low-boiling-point substance between the large cover head and the reactor wall flows into the central tube (5) through the distillation tube (3), and then the low-boiling-point substance is discharged from the reactor. S4: After distillation is complete, turn off the heating device (4).

7. The method of using the titanium reactor for reducing low-boiling-point impurities at the large flange according to claim 6, characterized in that, In step S2, when the temperature of the distillation tube (3) reaches the preset temperature, the temperature of the distillation tube (3) is consistent with the temperature of the passage heater, and the temperature between the end cap of the large cover (2) and the inner wall of the cylinder (1) is higher than the boiling point of the low boiling point substance.

8. The method of using the titanium reactor for reducing low-boiling-point impurities at the large flange according to claim 6, characterized in that, In step S3, when the temperature sensor (6) detects that the temperature inside the distillation tube (3) is lower than the preset temperature, the heating device (4) starts heating to ensure that the temperature inside the distillation tube (3) is stable at the preset temperature.

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