Self-operated zinc steam condensing device and method

Abstract

The invention belongs to the technical field of zinc resource recovery, and relates to a self-operated zinc steam condensing device and method.The device comprises a zinc condenser, a zinc liquid pool and a zinc guide pipe, the zinc condenser is a closed cavity, and the upper portion of the zinc condenser is provided with a smoke inlet and a smoke outlet which are communicated with an inner cavity of the zinc condenser and a partition plate used for separating the smoke inlet and the smoke outlet; the zinc liquid pool is arranged below the zinc coagulator and communicated with the atmosphere, the two ends of the zinc guide pipe are connected with the zinc coagulator and the zinc liquid pool respectively, an inner cavity of the zinc coagulator is communicated with zinc liquid in the zinc liquid pool, and then the zinc liquid in the zinc liquid pool is sucked into the zinc coagulator under the action of negative pressure or vacuum; the top of the partition plate is fixedly connected with the top of the zinc coagulator in a sealed mode, a gap is formed between the bottom of the partition plate and the bottom of the zinc coagulator, and the bottom of the partition plate is located in zinc liquid in the zinc coagulator to form liquid seal. The problems of sealing and efficient cooling of the zinc steam condensation system under the negative pressure or vacuum condition are solved, and high practicability and popularization value are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of zinc resource recovery and relates to a self-powered zinc steam condensation device and method. Background Art

[0002] In the field of metal smelting and recycling, effectively recovering metallic liquid zinc from zinc vapor-containing flue gas and further casting ingots has always been one of the key technologies in the industry. Traditionally, splashing zinc rain condensation or lead rain condensation technology is widely used in this process. However, these technologies have significant limitations, mainly manifested in their complex operating procedures and lack of adaptability to specific environmental conditions. Especially when zinc vapor condensation is required under negative pressure or vacuum environment, the disadvantages of traditional technology are more prominent. Negative pressure or vacuum conditions place extremely high demands on the sealing performance of cooling equipment, because any tiny air leakage may lead to the failure of the condensation process or a significant decline in product quality. This not only increases the difficulty of technical implementation, but also limits the application of traditional condensation technology in a wider range of industrial scenarios.

[0003] Therefore, it has become an urgent need in the industry to develop a new zinc vapor recovery technology that can adapt to negative pressure or vacuum environments and ensure efficient and stable condensation. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a self-powered zinc vapor condensing device to solve the problem of system sealing and efficient cooling under negative pressure conditions.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A self-powered zinc vapor condensing device comprises a zinc condenser, a zinc liquid pool and a zinc guide pipe, wherein the zinc condenser is a closed cavity, and is provided with a smoke inlet and a smoke outlet communicating with its inner cavity at its upper portion, and a partition for separating the smoke inlet and the smoke outlet, the zinc liquid pool is arranged below the zinc condenser and communicated with the atmosphere, and the two ends of the zinc guide pipe are respectively connected to the zinc condenser and the zinc liquid pool, and the inner cavity of the zinc condenser is communicated with the zinc liquid in the zinc liquid pool, and then the zinc liquid in the zinc liquid pool is sucked into the zinc condenser under the action of negative pressure or vacuum;

[0007] The top of the partition is fixedly and sealedly connected to the top of the zinc coagulator, the bottom is spaced from the bottom of the zinc coagulator, and the bottom of the partition is located in the zinc liquid in the zinc coagulator to form a liquid seal.

[0008] Furthermore, the liquid level of the zinc liquid in the zinc liquid pool is higher than the bottom of the zinc conducting pipe to form a liquid seal.

[0009] Furthermore, the zinc guiding pipe includes a first zinc guiding pipe and a second zinc guiding pipe, which are arranged in parallel, and a jet pipe is arranged at the port of the first zinc guiding pipe located in the zinc liquid pool to spray a jet toward one end of the first zinc guiding pipe toward the zinc coagulator to force the zinc liquid to circulate between the zinc coagulator and the zinc liquid pool.

[0010] Furthermore, the zinc liquid pool is provided with a zinc discharge port to discharge excess zinc liquid.

[0011] Furthermore, an electric heating device is provided in the zinc liquid pool to melt the zinc in the zinc liquid pool at startup and to adjust the temperature of the zinc liquid during operation.

[0012] Furthermore, the bottom of the partition is in the shape of horizontal comb teeth, and the zinc liquid in the zinc condenser submerges the comb teeth by 5-10 mm, so that the smoke is evenly dispersed by the comb teeth when passing through.

[0013] Furthermore, the zinc guiding pipe is close to one end of the zinc coagulator and is arranged at the bottom of the zinc coagulator 1, so that when the negative pressure disappears, all the zinc liquid falls back into the zinc liquid pool.

[0014] A self-powered zinc vapor condensation method, using the self-powered zinc vapor condensation device, comprises the following steps:

[0015] The zinc condenser is connected to a zinc-containing flue gas pipeline under a negative pressure or vacuum environment through a smoke inlet and a smoke outlet of the zinc condenser, so that a negative pressure or vacuum environment is formed in the cavity of the zinc condenser. Under the action of the negative pressure, the zinc liquid in the zinc liquid pool is sucked into the zinc condenser through the zinc guide pipe, and a liquid level difference is formed between the zinc condenser and the zinc liquid pool to balance the negative pressure in the zinc condenser, and the zinc liquid in the zinc condenser submerges the bottom of the partition;

[0016] The flue gas containing zinc vapor in the zinc-containing flue gas pipeline enters the zinc condenser through the smoke inlet and is blocked by the partition, thereby flowing downward and passing over the bottom of the partition, forming an impact with the zinc liquid in the zinc condenser. The zinc vapor in the flue gas is cooled and captured by the zinc liquid and the zinc rain formed by the impact, and the flue gas is discharged through the smoke outlet.

[0017] Furthermore, the temperature of the zinc liquid in the zinc liquid pool is controlled to be 450-550°C.

[0018] Furthermore, the partition is arranged along the center line of the zinc condenser in the radial direction so that the flue gas containing zinc vapor has the largest contact area with the partition and the zinc liquid in the zinc condenser.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention provides a self-powered zinc vapor condensation device and method, which connects a zinc condenser in a closed cavity and a zinc liquid pool connected to the atmosphere through a zinc guide pipe, and cooperates with a natural liquid-sealed baffle arranged in the zinc condenser to realize automatic provision of the power conditions required for zinc condensation through system pressure under negative pressure or vacuum conditions. The whole process is carried out in a closed cavity, which not only meets the demand for zinc vapor condensation, but also ensures that air cannot enter through natural liquid sealing. It has strong practicality and promotion value in the field of condensing zinc vapor under negative pressure or vacuum conditions.

[0021] 2. By setting the bottom of the partition to a horizontal comb shape, the flue gas is evenly dispersed by the comb teeth when passing over the partition, and is fully in contact with the zinc liquid, further enhancing heat exchange and zinc vapor capture; and by introducing inert gas into the jet pipe, an upward jet of zinc liquid is formed in the first zinc guide pipe, the zinc liquid flows upward, and the zinc liquid in the second zinc guide pipe flows downward, so as to force the zinc liquid to circulate between the zinc condenser and the zinc liquid pool, and quickly remove the heat in the zinc condenser.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic structural diagram of a self-powered zinc vapor condensing device in an embodiment;

[0025] Figure 2 It is a top view of a self-powered zinc vapor condensing device in the embodiment.

[0026] Figure numerals: 1-zinc condenser; 2-partition; 3-zinc liquid pool; 4a-first zinc guiding pipe; 4b-second zinc guiding pipe; 5-zinc discharge port; 6-electric heating device; 7-jet tube. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] See also Figure 1-2 , is a self-powered zinc vapor condensing device, comprising a zinc condenser 1, a zinc liquid pool 3 and a zinc guide pipe connecting the two, the zinc condenser 1 is a closed cavity, and is provided with a smoke inlet and a smoke outlet communicating with the inner cavity at its upper part, and a partition 2 for separating the smoke inlet and the smoke outlet, the upper end of the partition 2 is fixedly sealed and connected to the top of the zinc condenser 1, the lower end is at a certain distance from the bottom of the zinc condenser 1, and the lower end of the partition 2 is located in the zinc liquid in the zinc condenser 1 to form a liquid seal;

[0031] The zinc liquid pool 3 is arranged below the zinc coagulator 1 and is connected to the atmosphere. The two ends of the zinc guide pipe are respectively connected to the zinc coagulator 1 and the zinc liquid pool 3, thereby connecting the zinc coagulator 1 and the zinc liquid in the zinc liquid pool 3.

[0032] One end of the zinc-conducting pipe is located in the zinc liquid in the zinc liquid pool 3 (ie, the zinc liquid level in the zinc liquid pool 3 is higher than the bottom of the zinc-conducting pipe) to form a liquid seal to prevent air from entering.

[0033] The zinc guiding pipe includes a first zinc guiding pipe 4a and a second zinc guiding pipe 4b, which are arranged in parallel, and a jet pipe 7 is arranged at the port of the first zinc guiding pipe 4a located in the zinc liquid pool 3 to spray a jet toward one end of the first zinc guiding pipe 4a toward the zinc coagulator 1 to force the zinc liquid to circulate between the zinc coagulator 1 and the zinc liquid pool 3.

[0034] Specifically, a zinc discharge port 5 is provided in the middle of the zinc liquid pool 3 to discharge excess zinc liquid, and an electric heating device 6 is provided at the bottom of the zinc liquid pool 3 to melt the zinc in the zinc liquid pool 3 when the equipment is started and to adjust the temperature of the zinc liquid during operation.

[0035] Preferably, the bottom of the partition 2 is in the shape of horizontal comb teeth, and the zinc liquid in the zinc condenser 1 submerges the comb teeth by 5-10 mm, so that the flue gas is evenly dispersed by the comb teeth when passing through, and is in full contact with the zinc liquid, thereby achieving enhanced heat exchange and zinc vapor capture.

[0036] The method of using the above self-powered zinc vapor condensing device is as follows:

[0037] The zinc coagulator 1 is connected to a zinc-containing flue gas pipeline under a negative pressure or vacuum environment through the smoke inlet and the smoke outlet of the zinc coagulator 1, so that the cavity of the zinc coagulator 1 forms a negative pressure or vacuum environment. Under the action of the negative pressure, the zinc liquid in the zinc liquid pool 3 is sucked into the zinc coagulator 1 through the zinc guide pipe, and a liquid level difference ΔH is formed between the zinc coagulator 1 and the zinc liquid pool 3 to balance the negative pressure in the zinc coagulator 1, and the zinc liquid in the zinc coagulator 1 submerges the bottom of the partition 2;

[0038] The flue gas containing zinc vapor in the zinc-containing flue gas pipeline enters the zinc condenser 1 through the smoke inlet and is blocked by the partition 2, thereby flowing downward, passing over the bottom of the partition 2, and impacting the zinc liquid. The zinc vapor in the flue gas is cooled and captured by the zinc liquid and the zinc rain formed by the impact, and the flue gas is discharged through the smoke outlet.

[0039] During the operation of the self-powered zinc steam condensation device, the temperature of the zinc liquid in the zinc liquid pool 3 is controlled to be 450-550°C by the electric heating device 6; an inert gas is introduced into the jet tube 7 to form an upward jet of zinc liquid in the first zinc guiding pipe 4a, and the zinc liquid flows upward, thereby causing the zinc liquid in the second zinc guiding pipe 4b to flow downward, forcing the zinc liquid to circulate between the zinc condenser and the zinc liquid pool, and taking out the heat in the zinc condenser 1.

[0040] Specifically, the liquid level difference ΔH between the zinc condenser 1 and the zinc liquid pool 3 is automatically adjusted following the change of negative pressure in the zinc-containing flue gas pipeline.

[0041] The zinc guiding pipe is close to one end of the zinc condenser 1 and is arranged at the bottom of the zinc condenser 1 so that when the negative pressure disappears after the operation of the self-powered zinc steam condensing device is completed, all the zinc liquid falls back into the zinc liquid pool 3.

[0042] Preferably, the partition 2 is arranged along the center line of the zinc condenser 1 in the radial direction so that the flue gas containing zinc vapor has the largest contact area with the partition 2 and the zinc liquid in the zinc condenser 1.

[0043] The present invention provides a self-powered zinc steam condensing device, which is suitable for condensing and recovering zinc steam-containing flue gas with a system pressure of negative pressure or vacuum. The power conditions required for zinc condensation are automatically provided by the system pressure, and all are carried out in a closed environment, which not only meets the demand for zinc steam condensation, but also ensures that air cannot enter through natural liquid sealing. The device has strong practicality and promotion value in the field of condensing zinc steam under negative pressure or vacuum conditions.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A self-powered zinc vapor condensing device, characterized in that: The invention comprises a zinc condenser, a zinc liquid pool and a zinc guide pipe, wherein the zinc condenser is a closed cavity, and is provided with a smoke inlet and a smoke outlet communicating with its inner cavity at its upper part, and a partition for separating the smoke inlet and the smoke outlet, the zinc liquid pool is arranged below the zinc condenser and communicated with the atmosphere, and the two ends of the zinc guide pipe are respectively connected to the zinc condenser and the zinc liquid pool, so that the inner cavity of the zinc condenser is communicated with the zinc liquid in the zinc liquid pool, and then the zinc liquid in the zinc liquid pool is sucked into the zinc condenser under the action of negative pressure or vacuum; The top of the partition is fixedly and sealedly connected to the top of the zinc coagulator, the bottom is spaced from the bottom of the zinc coagulator, and the bottom of the partition is located in the zinc liquid in the zinc coagulator to form a liquid seal.

2. The self-powered zinc vapor condensing device according to claim 1, characterized in that: The liquid level of the zinc in the zinc pool is higher than the bottom of the zinc conducting pipe to form a liquid seal.

3. The self-powered zinc vapor condensing device according to claim 1 is characterized in that: The zinc guiding pipe includes a first zinc guiding pipe and a second zinc guiding pipe, which are arranged in parallel, and a jet pipe is arranged at the port of the first zinc guiding pipe located in the zinc liquid pool to spray a jet toward one end of the first zinc guiding pipe toward the zinc coagulator to force the zinc liquid to circulate between the zinc coagulator and the zinc liquid pool.

4. The self-powered zinc vapor condensing device according to claim 1, characterized in that: The zinc liquid pool is also provided with a zinc discharge port to discharge excess zinc liquid.

5. The self-powered zinc vapor condensing device according to claim 1, characterized in that: An electric heating device is arranged in the zinc liquid pool to melt the zinc in the zinc liquid pool at startup and to adjust the temperature of the zinc liquid during operation.

6. The self-powered zinc vapor condensing device according to claim 1, characterized in that: The bottom of the partition is in the shape of horizontal comb teeth, and the zinc liquid in the zinc condenser submerges the comb teeth by 5-10 mm, so that the smoke is evenly dispersed by the comb teeth when passing through.

7. The self-powered zinc vapor condensing device according to claim 1 is characterized in that: The zinc guiding pipe is close to one end of the zinc coagulator and is arranged at the bottom of the zinc coagulator 1 so that when the negative pressure disappears, all the zinc liquid falls back into the zinc liquid pool.

8. A self-powered zinc vapor condensation method, characterized in that: The self-powered zinc vapor condensing device according to any one of claims 1 to 7 comprises the following steps: The zinc condenser is connected to a zinc-containing flue gas pipeline under a negative pressure or vacuum environment through a smoke inlet and a smoke outlet of the zinc condenser, so that a negative pressure or vacuum environment is formed in the cavity of the zinc condenser. Under the action of the negative pressure, the zinc liquid in the zinc liquid pool is sucked into the zinc condenser through the zinc guide pipe, and a liquid level difference is formed between the zinc condenser and the zinc liquid pool to balance the negative pressure in the zinc condenser, and the zinc liquid in the zinc condenser submerges the bottom of the partition; The flue gas containing zinc vapor in the zinc-containing flue gas pipeline enters the zinc condenser through the smoke inlet and is blocked by the partition, thereby flowing downward and passing over the bottom of the partition, forming an impact with the zinc liquid in the zinc condenser. The zinc vapor in the flue gas is cooled and captured by the zinc liquid and the zinc rain formed by the impact, and the flue gas is discharged through the smoke outlet.

9. The self-powered zinc vapor condensation method according to claim 7, characterized in that: The temperature of the zinc liquid in the zinc liquid pool is controlled to be 450-550°C.

10. The self-powered zinc vapor condensation method according to claim 7, characterized in that: The partition is arranged along the center line of the zinc condenser in the radial direction so that the flue gas containing zinc vapor has the largest contact area with the partition and the zinc liquid in the zinc condenser.

Images