Waste heat utilization device for zinc smelting lead tank

Abstract

The utility model provides a zinc smelting lead groove waste heat utilization device which comprises a shell and a heat exchange device arranged in the shell, and a heat exchange cavity is formed between the heat exchange device and the shell. A heat exchange medium is arranged in the heat exchange cavity; a first electrode and a second electrode which are led into the heat exchange cavity are arranged at the top of the shell, and the heat exchange medium is not communicated with a circuit between the first electrode and the second electrode; and an exhaust hole communicated to the heat exchange cavity is formed in the top of the shell. According to the waste heat utilization device for the zinc smelting lead groove, the technical problem that a heat exchange device in the prior art cannot safely and effectively cool a lead liquid flow groove and utilize waste heat is solved.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting, specifically to a waste heat utilization device for lead tanks in zinc smelting. Background Technology

[0002] Currently, pyrometallurgical zinc smelting technology is widely used in my country and internationally. In the zinc vapor condensation and settling process, a lead rain splash condenser is used to condense zinc into molten zinc, which is then dissolved into a lead pool. The molten lead is continuously circulated in a flow channel by a pump. The molten lead flowing out of the condenser is cooled in a water-cooled flow channel, requiring a heat exchange device to lower its temperature. Because the high-temperature molten lead mixed with a small amount of zinc is corrosive, traditional cooling water pipes require frequent replacement. If the cooling water pipes are damaged, there is a certain risk to production safety. Furthermore, the waste heat from cooling the molten lead is not well utilized, resulting in heat waste. Utility Model Content

[0003] To address the technical problem that existing heat exchange devices cannot safely and effectively cool and utilize the waste heat of lead molten steel tanks, this utility model provides a waste heat utilization device for zinc smelting lead tanks.

[0004] A waste heat utilization device for zinc smelting lead bath includes an outer shell and a heat exchange device disposed within the outer shell, forming a heat exchange cavity between the heat exchange device and the outer shell; a heat exchange medium is disposed within the heat exchange cavity; an electrode one and an electrode two are disposed on the top of the outer shell and pass into the heat exchange cavity, the heat exchange medium is not connected to the circuit between the electrode one and the electrode two; an exhaust port connected to the heat exchange cavity is disposed on the top of the outer shell.

[0005] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the heat exchange device includes a heat exchange body and a heat exchange water pipe disposed on the heat exchange body; the two ends of the heat exchange water pipe extend out of the outer shell to form an inlet and an outlet, respectively.

[0006] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the heat exchange body is provided with an exhaust pipe that connects the internal space of the heat exchange body and the heat exchange cavity.

[0007] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the heat exchange water pipe in contact with the heat exchange medium is provided with a protective sleeve.

[0008] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the depth of the second electrode entering the heat exchange cavity is greater than the depth of the first electrode entering the heat exchange cavity; the highest point of the heat exchange medium is in contact with the second electrode, but not with the first electrode.

[0009] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the heat exchange medium is a lead-bismuth alloy.

[0010] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, the top of the outer shell is provided with a heat exchange medium injection hole that communicates with the heat exchange cavity.

[0011] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, a lifting ring is provided on the top of the outer shell.

[0012] In a preferred embodiment of the waste heat utilization device for zinc smelting lead tank provided by this utility model, guide plates are provided on both opposite sides of the outer shell.

[0013] Compared to existing technologies, the waste heat utilization device for zinc smelting lead tanks provided by this utility model avoids direct contact between the heat exchange water pipe and the zinc-containing lead liquid in the lead liquid flow tank through the arrangement of the heat exchange cavity and heat exchange medium, thus preventing corrosion and making it safer; through the arrangement of electrode one, electrode two, exhaust port and heat exchange medium, the circuit is connected and an alarm is generated when the outer shell is damaged; through the arrangement of the exhaust pipe, the internal space of the heat exchange body is prevented from having any sealed cavity after the heat exchange medium is filled, which could cause an explosion due to heat. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a waste heat utilization device for lead smelting in zinc production, provided by this utility model.

[0015] Figure 2 This is a cross-sectional view from another perspective of a waste heat utilization device for a zinc smelting lead tank provided by this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of a waste heat utilization device for lead smelting in zinc smelting provided by this utility model;

[0017] Figure 4 This is a layout diagram of a waste heat utilization device for a zinc smelting lead tank provided by this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please refer to the following: Figures 1 to 3 These are cross-sectional views and structural schematic diagrams of a zinc smelting lead trough waste heat utilization device provided by this utility model from two different perspectives.

[0020] The waste heat utilization device for zinc smelting lead tank includes a shell 12, with guide plates 13 on both opposite sides of the shell 12, and a lifting ring on the top of the shell 12.

[0021] A heat exchange device is provided inside the outer shell 12, and a heat exchange cavity 11 is formed between the heat exchange device and the outer shell 12. A heat exchange medium (not shown in the figure) is provided inside the heat exchange cavity 11.

[0022] The heat exchange medium is a lead-bismuth alloy with a density of 10.3 g / cm³ and a melting point of 125℃~200℃.

[0023] The top of the outer shell 12 is provided with an exhaust port (not shown in the figure) that connects to the heat exchange chamber 11.

[0024] The top of the outer shell 12 is provided with a heat exchange medium injection hole 7 that communicates with the heat exchange cavity 11.

[0025] The top of the outer casing 12 is provided with electrode 2 and electrode 6, which enter the heat exchange cavity 11. The depth to which electrode 6 enters the heat exchange cavity 11 is greater than the depth to which electrode 2 enters the heat exchange cavity 11. The liquid level of the heat exchange medium is located between the bottom surface of electrode 6 and the bottom surface of electrode 2. There is no electrical connection between electrode 6 and electrode 2.

[0026] The heat exchange device includes a heat exchange body 10 and a heat exchange water pipe 9 disposed on the heat exchange body 10. The two ends of the heat exchange water pipe 9 extend out of the top of the outer shell 12 to form an inlet 3 and an outlet 5, respectively. The pipe of the heat exchange water pipe 9 in contact with the heat exchange medium is provided with a protective sleeve 8.

[0027] The heat exchange body 10 is provided with an exhaust pipe 1 that connects the internal space of the heat exchange body 10 and the heat exchange cavity 11.

[0028] For specific implementation, please refer to the following: Figure 4 This is a layout diagram of a waste heat utilization device for a zinc smelting lead tank provided by this utility model.

[0029] Multiple waste heat recovery devices 15 for zinc smelting lead baths are fixed to the lead molten chute 14 via the lifting rings 4. The density of the lead molten liquid flowing in the lead molten chute 14 is 11.3 g / cm³, and the temperature is 400~520℃. The liquid level of the lead molten liquid in the lead molten chute 14 is higher than the bottom surface of the electrode 2 and lower than the top surface of the outer casing 11.

[0030] The first electrode 2 and the second electrode 6 are connected to an external alarm device.

[0031] The heat from the high-temperature molten lead in the lead chute 14 is conducted through the outer shell 12 to the lead-bismuth alloy, causing the alloy to melt into a liquid state. The heat continues to be conducted to the heat exchanger body 10 and the heat exchange water pipe 9, heating the cooling water in the pipe 9, some of which vaporizes into steam. The heated water and steam are discharged from the outlet 5 and utilized through an external pipeline.

[0032] When the outer casing 12 is damaged and leaks, the lead liquid in the lead liquid chute 14 enters the heat exchange chamber 11, causing the liquid level in the heat exchange chamber 11 to rise. When the liquid level rises to contact the first electrode 2, the circuit between the second electrode 6 and the first electrode 2 is connected, and the alarm sounds, indicating that the waste heat utilization device 15 for zinc smelting lead tank needs to be replaced in time.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A zinc smelting lead bath waste heat utilization device, characterized in that: The application relates to a heat exchange device, which comprises a shell and a heat exchange device arranged in the shell, a heat exchange cavity is formed between the heat exchange device and the shell, a heat exchange medium is arranged in the heat exchange cavity, an electrode one and an electrode two are arranged on the top of the shell and lead into the heat exchange cavity, the heat exchange medium does not connect a circuit between the electrode one and the electrode two, and an exhaust hole leading to the heat exchange cavity is arranged on the top of the shell.

2. The device for utilizing waste heat of a zinc smelting lead bath according to claim 1, characterized in that: The heat exchange device comprises a heat exchange main body and a heat exchange water pipe arranged in the heat exchange main body, and two ends of the heat exchange water pipe respectively extend out of the shell to form a water inlet and a water outlet.

3. The device for utilizing waste heat of a zinc smelting lead bath according to claim 2, characterized in that: An exhaust pipeline is arranged in the heat exchange main body and connects an internal space of the heat exchange main body and the heat exchange cavity.

4. The device for utilizing waste heat of a zinc smelting lead bath according to claim 2, characterized in that: A protective sleeve is arranged on the pipeline of the heat exchange water pipe in contact with the heat exchange medium.

5. The device for utilizing waste heat of zinc smelting lead bath according to claim 1, characterized in that: The depth of the electrode two leading into the heat exchange cavity is deeper than that of the electrode one, the highest position of the heat exchange medium is in contact with the electrode two and is not in contact with the electrode one.

6. The device for utilizing waste heat of a zinc smelting lead bath according to claim 1, characterized in that: The heat exchange medium is a lead-bismuth alloy.

7. The device for utilizing waste heat of a zinc smelting lead bath according to claim 1, characterized in that: A heat exchange medium filling hole leading to the heat exchange cavity is arranged on the top of the shell.

8. The device for utilizing waste heat of a zinc smelting lead bath according to claim 1, characterized in that: A lifting ring is arranged on the top of the shell.

9. The device for utilizing waste heat of a zinc smelting lead bath according to claim 1, characterized in that: Flow guide plates are arranged on opposite sides of the shell.

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