Oiling device for removing vanadium in process of producing titanium tetrachloride by using molten salt chlorination method

Abstract

The utility model relates to the technical field of vanadium removal devices, in particular to an oiling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method, which comprises a vanadium removal tower, a heating pool and an organic storage tank, the heating pool is connected with the top of the organic storage tank through a first conveying pipe, a first oil pump and a first switch valve are arranged on the first conveying pipe and used for conveying the heated organic matter raw materials in the heating pool into the organic storage tank, and the organic storage tank is connected with the vanadium removal tower through a second conveying pipe; and a second oil pump is arranged on the second conveying pipe and is used for conveying the organic raw materials in the organic storage tank into the vanadium removal tower. According to the utility model, the problems of pipeline blockage, petrol pump motor damage and the like caused by high viscosity of mineral oil under normal-temperature and low-temperature conditions are solved, the service lives of the pipeline and the petrol pump motor are prolonged, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vanadium removal devices, in particular to a vanadium removal oiling device in the process of producing titanium tetrachloride by a molten salt chlorination method. Background Art

[0002] The vanadium value of crude titanium tetrachloride in the production of titanium tetrachloride by the molten salt chlorination method is generally high. The more mature vanadium removal processes will remove vanadium through other media. Currently, organic mineral oil is mainly used for vanadium removal.

[0003] In the prior art, the vanadium value of crude titanium tetrachloride can be effectively removed by adding mineral oil into the vanadium removal tower by utilizing the characteristics of organic mineral oil. However, since organic mineral oil becomes viscous at room temperature, it may cause blockage of the pipeline for transporting mineral oil to the vanadium removal tower and damage to the refueling pump motor.

[0004] In view of this, the inventors provide a refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method. The device reduces the viscosity of the mineral oil by placing the mineral oil in a heating pool for heating, thereby ensuring that the mineral oil is more easily transported to an organic storage tank; in addition, a first steam mechanism is arranged on the organic storage tank to keep the temperature of the mineral oil in the organic storage tank high and the fluidity good, thereby ensuring that the pipeline will not be blocked and the refueling pump motor will not be damaged during the process of transporting the mineral oil to a vanadium removal tower.

[0006] The purpose of the utility model is to solve the problem through the following technical solutions:

[0007] A refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method comprises a vanadium removal tower, a heating pool and an organic storage tank; the heating pool is connected to the top of the organic storage tank through a first delivery pipe, the first delivery pipe is provided with a first oil pump and a first switch valve for delivering the organic raw material heated in the heating pool to the organic storage tank, the organic storage tank is connected to the vanadium removal tower through a second delivery pipe, the second delivery pipe is provided with a second oil pump for delivering the organic raw material in the organic storage tank to the vanadium removal tower.

[0008] Furthermore, in order to store organic matter and ensure the normal operation of the system, the organic storage tank includes a storage tank body, and an insulation layer is provided on the outer surface of the storage tank body.

[0009] Furthermore, in order to keep the organic raw materials in the storage tank body warm, a first steam mechanism is also provided on the organic storage tank, and the first steam mechanism includes a first steam pipe, the inlet end and the outlet end of the first steam pipe are respectively arranged on the outside of the organic storage tank, and the inlet end of the first steam pipe is located above its outlet end and arranged on the same side, the steam flow pipeline of the first steam pipe is spirally arranged inside the storage tank body, and is used for heat transfer to the organic raw materials in the organic storage tank, the inlet end of the first steam pipe is provided with a second switch valve and a first flow regulating valve, and the outlet end of the first steam pipe is provided with a first steam trap.

[0010] Furthermore, a temperature measuring instrument is also provided on the organic storage tank.

[0011] Furthermore, the organic raw material is mineral oil.

[0012] Furthermore, in order to improve the delivery efficiency of mineral oil, the second delivery pipe includes two parallel first branch pipes and one second branch pipe, one end of the two first branch pipes are connected to the bottom of the organic storage tank after intersection, and the other end of the two first branch pipes are connected to one end of the second branch pipe after intersection, and the other end of the second branch pipe is connected to the vanadium removal tower; the number of the second oil pumps is two, and each of the first branch pipes is provided with a second oil pump.

[0013] Furthermore, a flow meter, a second flow regulating valve and a third switch valve are sequentially arranged on the second branch pipe from the organic storage tank to the vanadium removal tower.

[0014] Furthermore, in order to adjust the pressure of the mineral oil entering the vanadium removal tower and ensure the normal operation of the refueling device, it also includes a small organic reflux pipe, one end of which is connected to the junction of the first branch pipe and the second branch pipe, and the other end is connected to the top of the organic storage tank to form a first circulation loop; a fourth switch valve and a safety valve are arranged on the small organic reflux pipe.

[0015] Furthermore, in order to prevent waste in the case of abnormal operation of the refueling device, the mineral oil is regulated to flow back into the device, and a large organic reflux pipe is also included. One end of the large organic reflux pipe is connected to the second branch pipe and is located between the second flow regulating valve and the third switch valve, and the other end is connected to the top of the organic storage tank to form a second circulation loop. A fifth switch valve is arranged on the large organic reflux pipe.

[0016] Furthermore, a hollow structure is formed between the inner wall and the outer wall of the heating pool, and a second steam mechanism is arranged on the hollow structure. The second steam mechanism includes a second steam pipe, and the inlet end and the outlet end of the second steam pipe are respectively arranged on the outside of the heating pool, and the inlet end of the second steam pipe is arranged directly opposite to its outlet end. A second steam trap is arranged at the outlet end of the second steam pipe. When the steam injected through the inlet end of the second steam pipe is cooled to form water droplets accumulated in the hollow structure, the water is discharged through the second steam trap.

[0017] Furthermore, a fifth switch valve is provided on the second delivery pipe.

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] 1) The present invention discloses a refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method. The device heats the mineral oil in a heating pool to reduce the viscosity of the mineral oil, thereby ensuring that the mineral oil has good fluidity and flows more easily into a vanadium removal tower. The device solves the problems of pipeline blockage and fuel pump motor damage caused by the high viscosity of the mineral oil at normal and low temperatures, thereby extending the service life of the pipeline and the fuel pump motor and improving production efficiency.

[0020] 2) The present invention discloses a refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method. The device has good mobility and can be arranged in a molten salt chlorination workshop. In addition, the device can improve the regulation reliability of mineral oil, facilitate operation and maintenance, and significantly reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and constitute a part of this specification, and together with the description, are used to explain the principles of the present utility model.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a schematic structural diagram of the refueling device of the utility model.

[0024] Among them: 1 is a vanadium removal tower; 2 is a heating pool; 3 is an organic raw material; 4 is an organic storage tank; 5 is a first delivery pipe; 51 is a first oil pump; 52 is a first switch valve; 6 is a second delivery pipe; 7 is a second oil pump; 8 is a small organic reflux pipe; 9 is a large organic reflux pipe; 21 is a second steam mechanism; 41 is a storage tank body; 42 is an insulation layer; 43 is a first steam mechanism; 44 is a temperature measuring instrument; 61 is a flow meter; 62 is a second flow regulating valve; 63 is a third switch valve; 81 is a fourth switch valve; 82 is a safety valve; 91 is a fifth switch valve; 211 is a second steam pipe; 212 is a second steam trap; 431 is a first steam pipe; 432 is a second switch valve; 433 is a first flow regulating valve; 434 is a first steam trap. DETAILED DESCRIPTION

[0025] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices consistent with some aspects of the utility model as detailed in the attached claims.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1 The utility model provides a refueling device for removing vanadium in the process of producing titanium tetrachloride by a molten salt chlorination method, comprising a vanadium removal tower 1, a heating pool 2 and an organic storage tank 4; the heating pool 2 is connected to the top of the organic storage tank 4 through a first delivery pipe 5, and the first delivery pipe 5 is provided with a first oil pump 51 and a first switch valve 52 for delivering the heated organic raw material 3 in the heating pool 2 to the organic storage tank 4; the organic storage tank 4 is connected to the vanadium removal tower 1 through a second delivery pipe 6, and the second delivery pipe 6 is provided with a second oil pump 7 for delivering the organic raw material 3 in the organic storage tank 4 to the vanadium removal tower 1.

[0028] Specifically, the first oil pump 51 is a gear pump, the second oil pump 7 is a plunger pump, the organic raw material 3 is mineral oil, and the vanadium removal tower 1 is a device for distilling crude titanium tetrachloride and mineral oil.

[0029] In the present invention, the organic storage tank 4 comprises a storage tank body 41 , and a heat preservation layer 42 is disposed on the outer surface of the storage tank body 41 .

[0030] Furthermore, the organic storage tank 4 is also provided with a first steam mechanism 43, which includes a first steam pipe 431, the inlet end and the outlet end of the first steam pipe 431 are respectively arranged on the outside of the organic storage tank 4, and the inlet end of the first steam pipe 431 is located above the outlet end and is arranged on the same side, the steam flow pipeline of the first steam pipe 431 is spirally arranged inside the storage tank body 41, and is used for heat transfer to the organic raw material 3 in the organic storage tank 4, the inlet end of the first steam pipe 431 is provided with a second switch valve 432 and a first flow regulating valve 433, and the outlet end of the first steam pipe 431 is provided with a first steam trap 434.

[0031] Specifically, the second switch valve 432 is a pneumatic shut-off valve, which is used to shut off the heating steam of the organic raw material in the organic storage tank 4 in case of shutdown for maintenance or emergency.

[0032] Specifically, in this embodiment, the thermal insulation layer 42 is aluminum silicate thermal insulation cotton, and an aluminum sheet is provided on the outer layer of the aluminum silicate thermal insulation cotton to achieve better thermal insulation.

[0033] Furthermore, a thermometer 44 is provided on the organic storage tank 4 , and the temperature of the mineral oil in the organic storage tank 4 can be measured by the thermometer 44 .

[0034] In the utility model, the second delivery pipe 6 includes two parallel first branch pipes and one second branch pipe, one end of the two first branch pipes are connected to the bottom of the organic storage tank 4 after being intersected, and the other end is connected to one end of the second branch pipe after being intersected, and the other end of the second branch pipe is connected to the vanadium removal tower 1; the number of the second oil pumps 7 is two, and each of the first branch pipes is provided with a second oil pump 7.

[0035] Furthermore, a flow meter 61 , a second flow regulating valve 62 and a third switch valve 63 are sequentially arranged on the second branch pipe in a direction from the organic storage tank 4 to the vanadium removal tower 1 .

[0036] Specifically, the third switch valve 63 is a pneumatic shut-off valve, which is used to cut off the flow of organic raw materials from the organic storage tank 4 to the vanadium removal tower 1 in shutdown for maintenance or in an emergency.

[0037] The utility model also includes a small organic reflux pipe 8, one end of which is connected to the junction of the first branch pipe and the second branch pipe, and the other end is connected to the top of the organic storage tank 4 to form a first circulation loop; a fourth switch valve 81 and a safety valve 82 are arranged on the small organic reflux pipe 8, and the fourth switch valve 81 is arranged on the side of the safety valve 82 close to the organic storage tank 4. The small organic reflux pipe 8 is used to adjust the pressure of the mineral oil entering the vanadium removal tower 1 to ensure the normal operation of the system.

[0038] The utility model further includes a large organic matter reflux pipe 9, one end of which is connected to the second branch pipe and is located between the second flow regulating valve 62 and the third switch valve 63, and the other end is connected to the top of the organic storage tank 4 to form a second circulation loop. A fifth switch valve 91 is provided on the large organic matter reflux pipe 9.

[0039] Specifically, the fourth switch valve 81 and the fifth switch valve 91 are both manual switch valves.

[0040] Furthermore, the inner wall and the outer wall of the heating pool 2 are hollow structures, and a second steam mechanism 21 is arranged on the hollow structure. The second steam mechanism 21 includes a second steam pipe 211, and the inlet end and the outlet end of the second steam pipe 211 are respectively arranged on the outside of the heating pool 2, and the inlet end of the second steam pipe 211 is arranged directly opposite to the outlet end. The outlet end of the second steam pipe 211 is provided with a second steam trap 212. When the steam injected through the inlet end of the second steam pipe 211 is cooled to form water droplets accumulated in the hollow structure, the water is discharged through the second steam trap 212. It should be noted that the operating principle of the first steam mechanism 43 is the same as that of the second steam mechanism 21.

[0041] The specific process of the refueling device in practical application is as follows:

[0042] Step 1, arrange the refueling device in the molten salt chlorination workshop, then open the heating pool 2 to heat the mineral oil, and at the same time, transport steam from the inlet end of the second steam pipe 211 to the hollow structure of the heating pool 2;

[0043] Step 2: After the mineral oil is heated to the set temperature, the first oil pump 51 and the first switch valve 52 are turned on to transport the mineral oil to the organic storage tank 4 through the first oil pump 51, and steam is simultaneously transported to the first steam pipe 431 for heat preservation treatment;

[0044] Step 3, opening the second oil pump 7, the third switch valve 63 and the fourth switch valve 81 to transport the mineral oil in the organic storage tank 4 to the vanadium removal tower 1;

[0045] During this process, the flow meter 61 measures the flow of the second branch. If the flow exceeds the set threshold, the second flow regulating valve is used to reduce the flow, and then the excess mineral oil will enter the small organic reflux pipe 8 and flow back to the organic storage tank 4;

[0046] When the refueling device is not operating normally during operation, the third switch valve 63 is closed and the fifth switch valve 91 is opened to allow the mineral oil to circulate back into the organic storage tank 4, thereby ensuring the normal operation of the refueling device and preventing the mineral oil from being wasted.

[0047] Among them, mineral oil has the best fluidity when heated to 130°C.

[0048] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these 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 invention.

[0049] It should be understood that the present invention is not limited to the above-described contents, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method, comprising a vanadium removal tower (1), characterized in that: The method also comprises a heating pool (2) and an organic storage tank (4); the heating pool (2) is connected to the top of the organic storage tank (4) via a first delivery pipe (5); the first delivery pipe (5) is provided with a first oil pump (51) and a first switch valve (52) for delivering the organic raw material (3) heated in the heating pool (2) to the organic storage tank (4); the organic storage tank (4) is connected to the vanadium removal tower (1) via a second delivery pipe (6); the second delivery pipe (6) is provided with a second oil pump (7) for delivering the organic raw material (3) in the organic storage tank (4) to the vanadium removal tower (1).

2. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 1, characterized in that: The organic storage tank (4) comprises a storage tank body (41), and a heat-insulating layer (42) is provided on the outer surface of the storage tank body (41).

3. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 2, characterized in that: The organic storage tank (4) is also provided with a first steam mechanism (43), the first steam mechanism (43) comprising a first steam pipe (431), the inlet end and the outlet end of the first steam pipe (431) being respectively arranged on the outside of the organic storage tank (4), and the inlet end of the first steam pipe (431) is located above the outlet end thereof and arranged on the same side, the steam flow pipeline of the first steam pipe (431) is spirally arranged inside the storage tank body (41) for heat transfer to the organic raw material (3) in the organic storage tank (4), the inlet end of the first steam pipe (431) is provided with a second switch valve (432) and a first flow regulating valve (433), and the outlet end of the first steam pipe (431) is provided with a first steam trap (434).

4. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 3, characterized in that: The organic storage tank (4) is also provided with a temperature measuring instrument (44).

5. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 1, characterized in that: The organic raw material (3) is mineral oil.

6. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 1, characterized in that: The second delivery pipe (6) comprises two parallel first branch pipes and one second branch pipe, one end of the two first branch pipes intersects and is connected to the bottom of the organic storage tank (4), and the other end of the two first branch pipes intersects and is connected to one end of the second branch pipe, and the other end of the second branch pipe is connected to the vanadium removal tower (1); the number of the second oil pumps (7) is two, and each of the first branch pipes is provided with a second oil pump (7).

7. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 6, characterized in that: A flow meter (61), a second flow regulating valve (62) and a third switch valve (63) are sequentially arranged on the second branch pipe in a direction from the organic storage tank (4) to the vanadium removal tower (1).

8. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 6, characterized in that: It also comprises a small organic matter reflux pipe (8), one end of which is connected to the junction of the first branch pipe and the second branch pipe, and the other end of which is connected to the top of the organic matter storage tank (4) to form a first circulation loop; a fourth switch valve (81) and a safety valve (82) are arranged on the small organic matter reflux pipe (8).

9. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to claim 7, characterized in that: The large organic matter reflux pipe (9) is also included. One end of the large organic matter reflux pipe (9) is connected to the second branch pipe and is located between the second flow regulating valve (62) and the third switch valve (63). The other end is connected to the top of the organic matter storage tank (4) to form a second circulation loop. A fifth switch valve (91) is provided on the large organic matter reflux pipe (9).

10. The refueling device for removing vanadium in the process of producing titanium tetrachloride by molten salt chlorination method according to any one of claims 1 to 9, characterized in that: A hollow structure is formed between the inner wall and the outer wall of the heating pool (2), and a second steam mechanism (21) is arranged on the hollow structure. The second steam mechanism (21) comprises a second steam pipe (211), and the inlet end and the outlet end of the second steam pipe (211) are respectively arranged on the outside of the heating pool (2), and the inlet end of the second steam pipe (211) is arranged directly opposite to the outlet end thereof. A second steam trap (212) is arranged at the outlet end of the second steam pipe (211). When the steam injected through the inlet end of the second steam pipe (211) is cooled to form water droplets that accumulate in the hollow structure, the water is discharged through the second steam trap (212).

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