Electrolysis device for removing thallium in smelting flue gas

Abstract

The utility model discloses an electrolyzer for removing thallium in smelting flue gas, which comprises a hollow electrolytic bath filled with electrolyte, an anion exchange membrane and a cation exchange membrane are arranged in the hollow electrolytic bath, and a circulation chamber is formed between the anion exchange membrane and the cation exchange membrane. The circulating chamber divides the internal space of the electrolytic bath into an anode chamber and a cathode chamber, an anode plate is arranged in the anode chamber, a plurality of cathode plates are arranged in the cathode chamber, and the anode plate and the plurality of cathode plates are electrically connected with the power supply respectively. According to the utility model, the solution containing thallium smelting flue gas is injected into the circulation chamber, and the thallium elementary substance is separated out on the cathode plate in the cathode chamber by adopting an electrolysis mode, so that the thallium elementary substance in the solution is recycled, and the thallium elementary substance is high in purity, free of secondary pollutants, economical, efficient, environment-friendly and regenerated.

Description

Technical Field

[0001] The utility model relates to the technical field of thallium recovery in smelting flue gas, in particular to an electrolysis device for removing thallium from smelting flue gas. Background Art

[0002] Thallium is a highly toxic transition metal, and its compounds can accumulate in the human body for more than 30 years, mainly in the kidneys and nervous system, gradually causing disease and organ failure. In the air around the workplace, when the thallium concentration exceeds 0.0039 mg / m 3 , which will cause symptoms such as periodic pain, nausea and night sweats in the human body, and severe cases will develop into acute thallium poisoning.

[0003] The output of the domestic nonferrous metallurgical industry has increased year by year, and the amount of smelting flue gas has also increased accordingly. Thallium does not form minerals alone, but is mainly enriched in deposits of various metals such as lead, zinc, arsenic, copper, antimony, mercury, and coal, forming associated minerals.

[0004] During the combustion of thallium-containing ores and coal, most of the thallium enters the atmosphere in the form of monovalent halogen compounds. Due to the low melting point, high equilibrium vapor pressure and solubility in water, monovalent thallium can stay in the atmosphere for decades. Thallium in the atmosphere enters the water body with rainfall and is further enriched in various organisms along the food chain.

[0005] Since the thallium content in flue gas is extremely small and highly toxic, there is no economical, efficient, environmentally friendly and regenerative method to treat thallium-containing smelting flue gas in traditional processes.

[0006] Nowadays, with the continuous development of electronic technology, the demand for thallium in the semiconductor industry, pharmaceuticals, aerospace, military and other fields is increasing, and the research and development of thallium recovery technology is becoming more and more important. In an environment where the demand for thallium is extremely high and there is a lack of relevant research, the utility model can efficiently, safely and economically recover thallium from waste gas, and the recovery and utilization of thallium can bring huge economic benefits to enterprises and society, and has great promotion value. Utility Model Content

[0007] In view of the above problems in the prior art, the utility model provides an electrolytic device for removing thallium from smelting flue gas, which solves the problem of low recovery efficiency of thallium in the existing thallium-containing smelting flue gas.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] Provided is an electrolytic device for removing thallium from smelting flue gas, comprising an electrolytic cell which is hollow inside and filled with electrolyte, an anion exchange membrane and a cation exchange membrane are arranged in the hollow interior of the electrolytic cell, and a circulation chamber is formed between the anion exchange membrane and the cation exchange membrane, the circulation chamber divides the inner hollow of the electrolytic cell into an anode chamber and a cathode chamber, an anode plate is arranged in the anode chamber, a plurality of cathode plates are arranged in the cathode chamber, and the anode plate and the plurality of cathode plates are electrically connected to a power source respectively.

[0010] In the utility model, a solution containing thallium smelting fume is injected into a circulation chamber, and thallium is precipitated on a cathode plate in a cathode chamber by electrolysis, thereby recovering the thallium in the solution. The thallium has high purity, no secondary pollutants are generated, and the regeneration is economical, efficient and environmentally friendly.

[0011] Furthermore, a first opening is provided on the electrolytic cell at the top of the anode chamber, a first clamping groove is provided on the circumference of the first opening, and a first fixing component for fixing the anode plate is clamped in the first clamping groove.

[0012] Furthermore, the first fixing assembly includes a first clamping plate clamped in the first clamping slot, a first fixing plate is arranged on the lower surface of the first clamping plate, a first fixing slot is opened at the bottom end of the first fixing plate, and the top end of the anode plate is fixed in the first fixing slot.

[0013] Furthermore, a second opening is provided on the electrolytic cell at the top of the cathode chamber, a second slot is provided on the circumference of the second opening, and a second fixing assembly for fixing a plurality of cathode plates is clamped in the second slot.

[0014] Furthermore, the second fixing assembly includes a second card plate clamped in the second card slot, a plurality of second fixing plates are arranged on the lower surface of the second card plate, a second fixing slot is opened at the bottom end of the plurality of second fixing plates, and the top ends of the plurality of cathode plates are respectively fixed in the plurality of second fixing slots.

[0015] Furthermore, a third fixed groove and a fourth fixed groove are arranged at intervals on the circumference of the inner wall of the electrolytic cell; the edge of the anion exchange membrane is fixed in the third fixed groove, and the edge of the cation exchange membrane is fixed in the fourth fixed groove.

[0016] The utility model discloses an electrolytic device for removing thallium from smelting flue gas, and its beneficial effects are:

[0017] In the utility model, a solution containing thallium smelting fume is injected into a circulation chamber, and thallium is precipitated on a cathode plate in a cathode chamber by electrolysis, thereby recovering the thallium in the solution, and the thallium has high purity and no secondary pollutants are generated. Meanwhile, the solution that is not completely electrolyzed can enter the circulation chamber for a second time for secondary electrolysis, thus realizing recycling, economical and efficient, and environmentally friendly regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the structure of an electrolytic device for removing thallium from smelting flue gas.

[0019] Figure 2 The utility model is a schematic diagram of the top view of the structure of an electrolytic device for removing thallium from smelting flue gas.

[0020] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at A in the middle.

[0021] Figure 4 It is a structural schematic diagram of the first fixing component of the utility model.

[0022] Figure 5 It is a side structural schematic diagram of the first fixing component of the utility model.

[0023] Figure 6 It is a structural schematic diagram of the second fixing component of the utility model.

[0024] Figure 7 It is a side structural schematic diagram of the second fixing assembly of the utility model.

[0025] Among them, 1. electrolytic cell; 11. first opening; 12. first card slot; 13. second opening; 14. second card slot; 15. third fixed slot; 16. fourth fixed slot; 2. anion exchange membrane; 3. cation exchange membrane; 4. circulation chamber; 5. anode chamber; 6. cathode chamber; 7. anode plate; 8. cathode plate; 9. first fixed component; 91. first card plate; 92. first fixed plate; 93. first fixed slot; 10. second fixed component; 101. second card plate; 102. second fixed plate; 103. second fixed slot. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are described to facilitate the understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all utility model creations utilizing the concept of the present invention are protected.

[0027] Example 1

[0028] refer to Figure 1 and Figure 3 , is a schematic diagram of the structure of an electrolytic device for removing thallium from smelting flue gas in this embodiment, and its purpose is to solve the problem of low efficiency of thallium recovery in existing thallium-containing smelting flue gas. The specific structure of this embodiment will be described in detail below.

[0029] An electrolytic device for removing thallium from smelting flue gas comprises an electrolytic cell 1 which is hollow inside and filled with electrolyte, an anion exchange membrane 2 and a cation exchange membrane 3.

[0030] An anion exchange membrane 2 and a cation exchange membrane 3 are arranged in the inner hollow of the electrolytic cell 1, and a circulation chamber 4 is formed between the anion exchange membrane 2 and the cation exchange membrane 3, and the circulation chamber 4 divides the inner hollow of the electrolytic cell 1 into an anode chamber 5 and a cathode chamber 6.

[0031] An anode plate 7 is disposed in the anode chamber 5, and a plurality of cathode plates 8 are disposed in the cathode chamber 6. The anode plate 7 and the plurality of cathode plates 8 are electrically connected to a power source, respectively.

[0032] In this embodiment, a solution containing thallium smelting flue gas is injected into the circulation chamber 4 in the electrolytic cell 1, the circulation chamber 4 and the cathode chamber 6 are separated by a cation exchange membrane 3, and the circulation chamber 4 and the anode chamber 5 are separated by an anion exchange membrane 2, wherein the anode plate 7 is a graphite plate, and the plurality of cathode plates 8 are stainless steel plates, the anode plate 7 and the plurality of cathode plates 8 are electrically connected to an external power supply, respectively. After starting the power switch, the solution in the circulation chamber 4 can be electrolyzed, so that the thallium element is precipitated on the cathode plate 8 in the cathode chamber 6, thereby recovering the thallium element in the solution, thereby obtaining high-purity thallium element without generating secondary pollutants, and at the same time, the solution that is not completely electrolyzed can enter the circulation chamber 4 for a second time for secondary electrolysis, thereby realizing recycling, economical and efficient, and environmentally friendly regeneration.

[0033] Specifically, a third fixing groove 15 and a fourth fixing groove 16 are arranged at intervals on the inner wall of the electrolytic cell 1 in the circumferential direction. The edge of the anion exchange membrane 2 is fixed in the third fixing groove 15 , and the edge of the cation exchange membrane 3 is fixed in the fourth fixing groove 16 .

[0034] In the present embodiment, a third fixed groove 15 and a fourth fixed groove 16 are provided in the electrolytic cell 1. The spacing distance between the third fixed groove 15 and the fourth fixed groove 16 can be set according to actual needs, and they are evenly arranged on the circumference of the inner wall of the electrolytic cell 1, so that the edge of the anion exchange membrane 2 is embedded in the third fixed groove 15 and clamped by a rubber strip, and the edge of the cation exchange membrane 3 is embedded in the fourth fixed groove 16 and clamped by a rubber strip, thereby fixing the anion exchange membrane 2 and the cation exchange membrane 3. The anion exchange membrane 2 and the cation exchange membrane 3 are clamped to the third fixed groove 15 and the fourth fixed groove 16 by the rubber strip, which is convenient for later replacement, and at the same time, a circulation chamber 4 is formed between the anion exchange membrane 2 and the cation exchange membrane 3.

[0035] Example 2

[0036] refer to Figure 2 , Figure 4-Figure 7This embodiment is based on Embodiment 1 and provides a method for fixing the anode plate 7 and multiple cathode plates 8 on the electrolytic cell 1 to achieve the function of flexibly installing or taking the anode plate 7 and multiple cathode plates 8. The specific fixing method in this embodiment will be described in detail below.

[0037] The anode plate 7 is mounted on the electrolytic cell 1 via a first fixing assembly 9 . The first fixing assembly 9 includes a first clamping plate 91 and a first fixing plate 92 .

[0038] Among them, the first clamping plate 91 is embedded in the first opening 11 opened on the electrolytic cell 1, and the first opening 11 is located on the electrolytic cell 1 at the top of the anode chamber 5. A first clamping groove 12 is opened in the circumferential direction of the first opening 11. The first clamping plate 91 can be clamped in the first clamping groove 12. The first clamping groove 12 provides support and fixation for the first clamping plate 91, so that the first clamping plate 91 is clamped and fixed in the first clamping groove 12.

[0039] The first fixing plate 92 is arranged on the lower surface of the first clamping plate 91, and a first fixing groove 93 is provided at the bottom end of the first fixing plate 92. The top end of the anode plate 7 is fixed in the first fixing groove 93. The fixing method can be as follows: a through hole passing through the first fixing groove 93 is provided on the side wall of the first fixing plate 92, and a through hole matching the through hole is provided on the anode plate 7, so that a bolt or a clamping block can pass through the through hole of the first fixing groove 93 and the through hole of the anode plate 7 to fix the anode plate 7 in the first fixing groove 93, and the wire of the anode plate 7 passes through the first fixing groove 93, the first fixing plate 92 and the first clamping plate 91 to be connected to an external power supply.

[0040] A plurality of cathode plates 8 are mounted on the electrolytic cell 1 via a second fixing assembly 10 . The second fixing assembly 10 includes a second clamping plate 101 and a second fixing plate 102 .

[0041] Among them, the second clamping plate 101 is embedded in the second opening 13 opened on the electrolytic cell 1, and the second opening 13 is located on the electrolytic cell 1 at the top of the cathode chamber 6. A second clamping groove 14 is opened in the circumferential direction of the second opening 13. The second clamping plate 101 can be clamped in the second clamping groove 14. The second clamping groove 14 provides support and fixation for the second clamping plate 101, so that the second clamping plate 101 is clamped and fixed in the second clamping groove 14.

[0042] The second fixing plate 102 is arranged on the lower surface of the second card plate 101, and a second fixing groove 103 is opened at the bottom end of the second fixing plate 102. The top end of the cathode plate 8 is fixed in the second fixing groove 103. The fixing method can be: a through hole passing through the second fixing groove 103 is opened on the side wall of the second fixing plate 102, and a through hole matching the through hole is opened on the cathode plate 8, so that the cathode plate 8 can be fixed in the second fixing groove 103 by passing through the through hole of the second fixing groove 103 and the through hole of the cathode plate 8 with a bolt or a card block, and the wires of multiple cathode plates 8 pass through the second fixing groove 103, the second fixing plate 102 and the second card plate 101 to be connected to an external power supply.

[0043] The working principle of an electrolytic device for removing thallium from smelting flue gas in this scheme is:

[0044] In practical application, the utility model refers to Figure 1-Figure 7 First, a solution containing thallium smelting flue gas is injected into the circulation chamber 4 in the electrolytic cell 1. The circulation chamber 4 is separated from the cathode chamber 6 by a cation exchange membrane 3, and the circulation chamber 4 is separated from the anode chamber 5 by an anion exchange membrane 2.

[0045] Then, the anode plate 7 and multiple cathode plates 8 are electrically connected to the external power supply respectively. After starting the power switch, the solution in the circulation chamber 4 can be electrolyzed. Since thallium is a metal cation, the thallium is reduced in the cathode chamber 6 and deposited on the cathode plate 8, and then the thallium in the solution is recovered, so as to obtain high-purity thallium without the generation of secondary pollutants. At the same time, the solution that is not completely electrolyzed can enter the circulation chamber 4 for a second time for secondary electrolysis, realizing recycling, economical and efficient, and environmentally friendly regeneration.

[0046] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. An electrolytic device for removing thallium from smelting flue gas, characterized in that: It comprises an electrolytic cell (1) which is hollow inside and filled with electrolyte; An anion exchange membrane (2) and a cation exchange membrane (3) are arranged in the inner hollow of the electrolytic cell (1), and a circulation chamber (4) is formed between the anion exchange membrane (2) and the cation exchange membrane (3); the circulation chamber (4) divides the inner hollow of the electrolytic cell (1) into an anode chamber (5) and a cathode chamber (6); An anode plate (7) is arranged in the anode chamber (5), and a plurality of cathode plates (8) are arranged in the cathode chamber (6). The anode plate (7) and the plurality of cathode plates (8) are electrically connected to a power source respectively.

2. The electrolytic device for removing thallium from smelting flue gas according to claim 1, characterized in that: The electrolytic cell (1) located at the top of the anode chamber (5) is provided with a first opening (11), a first clamping groove (12) is provided in the circumferential direction of the first opening (11), and a first fixing component (9) for fixing the anode plate (7) is clamped in the first clamping groove (12).

3. The electrolytic device for removing thallium from smelting flue gas according to claim 2, characterized in that: The first fixing assembly (9) comprises a first clamping plate (91) clamped in a first clamping groove (12); a first fixing plate (92) is provided on the lower surface of the first clamping plate (91); a first fixing groove (93) is provided at the bottom end of the first fixing plate (92); and the top end of the anode plate (7) is fixed in the first fixing groove (93).

4. The electrolytic device for removing thallium from smelting flue gas according to claim 1, characterized in that: A second opening (13) is provided on the electrolytic cell (1) at the top of the cathode chamber (6), a second slot (14) is provided in the circumferential direction of the second opening (13), and a second fixing component (10) for fixing a plurality of cathode plates (8) is clamped in the second slot (14).

5. The electrolytic device for removing thallium from smelting flue gas according to claim 4, characterized in that: The second fixing assembly (10) comprises a second clamping plate (101) clamped in a second clamping groove (14); a plurality of second fixing plates (102) are arranged on the lower surface of the second clamping plate (101); a second fixing groove (103) is provided at the bottom ends of the plurality of second fixing plates (102); and the top ends of the plurality of cathode plates (8) are respectively fixed in the plurality of second fixing grooves (103).

6. The electrolytic device for removing thallium from smelting flue gas according to claim 1, characterized in that: A third fixed groove (15) and a fourth fixed groove (16) are arranged at intervals on the inner wall of the electrolytic cell (1) in the circumferential direction; the edge of the anion exchange membrane (2) is fixed in the third fixed groove (15), and the edge of the cation exchange membrane (3) is fixed in the fourth fixed groove (16).

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