Molybdenum oxide segmented temperature control collecting device

Abstract

The utility model discloses a molybdenum oxide segmented temperature control collecting device which comprises a shell, a preheating pipe, a condensing pipe, a tail gas pipe and a temperature control system, and the preheating pipe, the condensing pipe and the tail gas pipe are all wrapped by the shell. Insulating layers and electric heating wires are arranged between the preheating pipe and the corresponding inner wall of the shell, between the condensing pipe and the corresponding inner wall of the shell and between the tail gas pipe and the corresponding inner wall of the shell; the condensation pipe is divided into a main collection cavity and an auxiliary collection cavity through a partition plate, an airflow channel is formed in the partition plate, and an adjusting valve is arranged on the airflow channel; the preheating pipe is communicated with the main collecting cavity, and the tail gas pipe is communicated with the auxiliary collecting cavity. When the device works, on one hand, the temperature control system is arranged, so that the partition diversity of the temperature field of the condensation area is realized, and molybdenum oxide products with different crystal morphologies and purities can be obtained; and on the other hand, recycling is achieved through the multi-stage chambers, the steam flow speed can be adjusted through the adjusting valve, and the recycling rate and the material taking stability are improved.

Description

Technical Field

[0001] This utility model relates to the fields of molybdenum extraction metallurgy and molybdenum chemical preparation, specifically to a segmented temperature-controlled molybdenum oxide collection device. Background Technology

[0002] In the field of deep processing of molybdenum concentrate, the short-process methods provided by Chinese patent applications CN201710203567.2 and CN201810008746.5 offer advantages such as fewer steps and higher efficiency in processing rhenium-containing molybdenum concentrate. Compared to traditional methods, they optimize process steps, reduce operational difficulty, and improve resource recovery rates. However, some practical problems remain to be solved in the process of efficient short-process processing (such as corresponding supporting equipment). Based on this, the molybdenum concentrate purification device involved in Chinese patent application CN202011369638.4 solves the supporting equipment requirements for molybdenum concentrate oxidation, molybdenum-rhenium volatilization, and steam purification. However, some drawbacks still exist in the actual operation of molybdenum oxide collection: on the one hand, the temperature field in the condensation zone is singular, thus only molybdenum oxide products with a single crystal morphology and purity can be obtained; on the other hand, the excessively high steam flow rate during condensation leads to incomplete crystallization, which not only affects the recovery rate but also the stability of the feed. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a segmented temperature-controlled collection device for molybdenum oxide, which on the one hand realizes the diversity of temperature field in the condensation zone, thereby obtaining molybdenum oxide products with different crystal morphologies and purities; on the other hand, improves the recovery rate and the stability of material collection.

[0004] This utility model solves the above problems through the following technical means:

[0005] A segmented temperature-controlled molybdenum oxide collection device includes a shell, a preheating pipe, a condensing pipe, an exhaust pipe, and a temperature control system. The preheating pipe, condensing pipe, and exhaust pipe are all enclosed by the shell. Insulation layers and electric heating wires are provided between the preheating pipe and the corresponding inner wall of the shell, between the condensing pipe and the corresponding inner wall of the shell, and between the exhaust pipe and the corresponding inner wall of the shell. The condensing pipe is divided into a main collection chamber and an auxiliary collection chamber by a partition. An airflow channel is provided on the partition, and a regulating valve is installed on the airflow channel. The preheating pipe is connected to the main collection chamber, and the exhaust pipe is connected to the auxiliary collection chamber.

[0006] The temperature control system includes multiple temperature control coils arranged in sections outside the condenser coils, airflow branch pipes connected to the temperature control coils, thermostats installed on the airflow branch pipes, airflow distribution valves and fans. The air outlet of the fan is connected to the main airflow pipe, and the main airflow pipe is distributed and connected to the multiple airflow branch pipes through the airflow distribution valve.

[0007] In implementing the above scheme, the temperature controller includes heating elements and temperature measuring elements. The temperature controller can adjust the airflow temperature on each airflow branch pipe, that is, adjust the airflow temperature entering the temperature control coil. In this way, different condensation temperature fields can be formed in the main collection chamber, thereby obtaining molybdenum oxide products with different crystal morphologies and purities.

[0008] Furthermore, both the preheating pipe and the condenser pipe are arranged horizontally, and the main collection chamber is divided into a buffer chamber and a deposition chamber arranged vertically by a mesh plate. During the collection process, the steam flow turns and slows down in the buffer chamber, which is conducive to deposition and crystallization.

[0009] Furthermore, one end of the condenser tube is open, and an insulation plug and a sealing cap are installed sequentially from the inside to the outside of the opening of the condenser tube; the insulation plug is composed of high-temperature resistant and corrosion-resistant quartz and insulation cotton, and the sealing cap is resistant to a high temperature of at least 200°C.

[0010] Furthermore, the outer side of the condenser is provided with a primary temperature control coil, a secondary temperature control coil, and a tertiary temperature control coil. The primary temperature control coil, the secondary temperature control coil, and the tertiary temperature control coil are respectively connected to the airflow distribution valve through a primary airflow branch pipe, a secondary airflow branch pipe, and a tertiary airflow branch pipe.

[0011] Furthermore, the outlet ends of the primary temperature control coil, the secondary temperature control coil, and the tertiary temperature control coil are connected to an outlet pipe.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses a segmented temperature-controlled molybdenum oxide collection device, comprising a shell, a preheating pipe, a condensing pipe, a tail gas pipe, and a temperature control system. The preheating pipe, condensing pipe, and tail gas pipe are all enclosed by the shell. Insulation layers and electric heating wires are provided between the preheating pipe and the corresponding inner wall of the shell, between the condensing pipe and the corresponding inner wall of the shell, and between the tail gas pipe and the corresponding inner wall of the shell. The condensing pipe is divided into a main collection chamber and an auxiliary collection chamber by a partition. An airflow channel is provided on the partition, and a regulating valve is installed on the airflow channel. The preheating pipe is connected to the main collection chamber, and the tail gas pipe is connected to the auxiliary collection chamber. Using this segmented temperature-controlled molybdenum oxide collection device, on the one hand, the temperature control system achieves diverse temperature zones in the condensation area, thereby enabling the acquisition of molybdenum oxide products with different crystal morphologies and purities; on the other hand, the multi-stage chamber recovery, with adjustable steam flow rate via regulating valves, improves the recovery rate and the stability of material collection. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below through embodiments. Through these descriptions, the features and advantages of the present invention will become clearer. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0017] Example

[0018] like Figure 1 As shown, the molybdenum oxide segmented temperature-controlled collection device of this embodiment includes a shell 9, a preheating pipe 1, a condenser pipe, an exhaust pipe 6, and a temperature control system. The preheating pipe 1, the condenser pipe, and the exhaust pipe 6 are all covered by the shell. The preheating pipe, the condenser pipe, and the exhaust pipe are all made of high-temperature resistant and corrosion-resistant materials such as quartz. A heat insulation layer 10 and an electric heating wire 11 are provided between the preheating pipe and the corresponding inner wall of the shell, between the condenser pipe and the corresponding inner wall of the shell, and between the exhaust pipe and the corresponding inner wall of the shell. The heat insulation layer can keep the temperature, and the electric heating wire can heat the corresponding area.

[0019] The condenser tube is divided into a main collection chamber and an auxiliary collection chamber 5 by a partition. An airflow channel is provided on the partition, and a regulating valve 4 is installed on the airflow channel. The preheating tube is connected to the main collection chamber, and the exhaust pipe is connected to the auxiliary collection chamber. In this embodiment, both the preheating tube and the condenser tube are arranged horizontally. The main collection chamber is divided into a buffer chamber 2 and a deposition chamber 3 arranged vertically by a mesh plate 12. The temperature difference between the buffer chamber and the deposition chamber is controlled at 500℃ or higher. The mesh plate can be made of quartz. During the collection process, the vapor flow changes direction and slows down in the buffer chamber, which is beneficial for deposition and crystallization.

[0020] The temperature control system includes multiple temperature control coils arranged in sections outside the condenser coil, airflow branch pipes 16 connected to the temperature control coils, thermostats 15 mounted on the airflow branch pipes, airflow distribution valves 14, and fans 13. The outlet of the fan is connected to a main airflow pipe, which is distributed and connected to the multiple airflow branch pipes via the airflow distribution valve. In this embodiment, the outer side of the condenser coil is divided into primary temperature control coils 19, secondary temperature control coils 18, and tertiary temperature control coils 17. The primary, secondary, and tertiary temperature control coils are respectively connected to the airflow distribution valve via primary, secondary, and tertiary airflow branch pipes. The outlets of the primary, secondary, and tertiary temperature control coils converge and are connected to an outlet pipe.

[0021] In implementing the above scheme, the temperature controller includes heating elements and temperature measuring elements. The temperature controller can adjust the airflow temperature on each airflow branch pipe, that is, adjust the airflow temperature entering the temperature control coil. In this way, different condensation temperature fields can be formed in the main collection chamber sections. The temperature difference is usually controlled at 200℃ and above, thereby obtaining molybdenum oxide products with different crystal morphologies and purities.

[0022] One end of the condenser is open, and an insulation plug 7 and a sealing cap 8 are installed sequentially from the inside to the outside of the opening. The insulation plug is composed of high-temperature and corrosion-resistant quartz and insulation cotton, and the sealing cap is resistant to a high temperature of at least 200°C. By opening the insulation plug and the sealing cap and removing the partition, the crystallized product can be taken out.

[0023] During operation, steam flows in from the preheating pipe, and after the flow rate is buffered and the direction is changed in the buffer chamber, it flows into the deposition chamber for crystallization and collection. The remaining gas flows into the auxiliary collection chamber through the gas flow channel for secondary collection, and the exhaust gas is discharged through the exhaust pipe for treatment.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A segmented temperature-controlled molybdenum oxide collection device, characterized in that: The device includes a shell, a preheating pipe, a condenser pipe, an exhaust pipe, and a temperature control system. The preheating pipe, condenser pipe, and exhaust pipe are all covered by the shell. Insulation layers and electric heating wires are provided between the preheating pipe and the corresponding inner wall of the shell, between the condenser pipe and the corresponding inner wall of the shell, and between the exhaust pipe and the corresponding inner wall of the shell. The condenser pipe is divided into a main collection chamber and an auxiliary collection chamber by a partition. An airflow channel is provided on the partition, and a regulating valve is provided on the airflow channel. The preheating pipe is connected to the main collection chamber, and the exhaust pipe is connected to the auxiliary collection chamber.

2. The segmented temperature-controlled molybdenum oxide collection device according to claim 1, characterized in that: The temperature control system includes multiple temperature control coils arranged in sections outside the condenser coils, airflow branch pipes connected to the temperature control coils, thermostats installed on the airflow branch pipes, airflow distribution valves and fans. The air outlet of the fan is connected to the main airflow pipe, and the main airflow pipe is distributed and connected to the multiple airflow branch pipes through the airflow distribution valve.

3. The molybdenum oxide segmented temperature-controlled collection device according to claim 1, characterized in that: Both the preheating pipe and the condensing pipe are arranged horizontally, and the main collection chamber is divided into a buffer chamber and a sedimentation chamber arranged vertically by a mesh plate.

4. The molybdenum oxide segmented temperature-controlled collection device according to claim 1, characterized in that: One end of the condenser tube is open, and an insulation plug and a sealing cap are installed sequentially from the inside to the outside of the opening of the condenser tube.

5. The segmented temperature-controlled molybdenum oxide collection device according to claim 1, characterized in that: The outer side of the condenser coil is equipped with a primary temperature control coil, a secondary temperature control coil, and a tertiary temperature control coil. The primary, secondary, and tertiary temperature control coils are respectively connected to the airflow distribution valve through a primary airflow branch pipe, a secondary airflow branch pipe, and a tertiary airflow branch pipe.

6. The segmented temperature-controlled molybdenum oxide collection device according to claim 5, characterized in that: The outlets of the primary, secondary, and tertiary temperature control coils are connected to an outlet pipe.

Images