CN112387139A - Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas - Google Patents
Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas Download PDFInfo
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- CN112387139A CN112387139A CN202011406448.5A CN202011406448A CN112387139A CN 112387139 A CN112387139 A CN 112387139A CN 202011406448 A CN202011406448 A CN 202011406448A CN 112387139 A CN112387139 A CN 112387139A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
- C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
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- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
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- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
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Abstract
The invention discloses a device for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas, relates to metal smelting, aims to solve the problems of lack of safety, high efficiency and accurate control, and has the technical scheme that: the utility model provides an application hydrogen sulfide gas body gets rid of device of copper ion among nickel electrolysis mixed acid system, includes efflux gas-liquid mixture reactor and whirl reacting trough, and the whirl reacting trough is provided with screen cloth and spoiler, and the whirl reacting trough is provided with PH meter, ORP meter, thermometer, thermal resistance and pressure sensor, and efflux gas-liquid mixture reactor is installed in the bottom of whirl reacting trough, and efflux gas-liquid mixture reactor installs check valve and electromagnetic flowmeter for gas. The device for removing the copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas effectively solves the problem of leakage of toxic and harmful gases of the hydrogen sulfide, more efficiently purifies the copper ions in the nickel electrolysis mixed acid system, and realizes safe, efficient and accurate control of deep copper removal of the hydrogen sulfide.
Description
Technical Field
The invention relates to metal smelting, in particular to a device for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas.
Background
Because copper element has strong thiophilic property, and the solubility product of copper sulfide is the smallest among various elements of the nickel electrolysis anolyte, and the difference between the copper element and main metal sulfides such as nickel cobalt is larger, the copper removing agent with better selectivity and copper removing depth in various copper removing methods developed at present basically utilizes the property of copper, and the hydrogen sulfide copper removing technology is also based on the property.
Compared with other sulfide copper removal agents, the hydrogen sulfide copper removal technology is more economic and efficient in copper removal effect and does not bring other impurity elements; for example, when the copper removing agent is sodium sulfide or sodium hydrosulfide, most of these precipitants must be used in alkaline solution, but nickel, cobalt and copper in the alkaline solution will generate hydroxide precipitate, so that the content of nickel and cobalt in the copper slag is high, the purpose of relatively thorough separation cannot be achieved, and sodium ions are also brought in.
In recent years, the production scale of the nickel in all countries of the world is continuously enlarged, the requirement on the quality of the nickel is higher, the currently used copper removal mode is not suitable for the development requirement, the technology for removing copper by hydrogen sulfide attracts attention again, but the research and development of related safe and efficient gas-liquid reaction equipment are relatively lagged, and the existing gas-liquid reaction devices can be divided into: (1) a bubble column reactor, a stirred bubble tank reactor and a plate reactor in which gas is dispersed in a liquid phase in a bubble form; (2) spray, jet, venturi reactors and the like in which liquid is dispersed in a gas phase in the form of droplets; (3) packed column reactors and falling film reactors in which liquid contacts the gas phase in a film-like motion, and the like.
The existing gas-liquid reactor is directly applied to the copper removal process of hydrogen sulfide, and has the problems of lack of safety, high efficiency and accurate control; therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the device for removing the copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas, effectively solves the problem of leakage of toxic and harmful gases of the hydrogen sulfide, more efficiently purifies the copper ions in the nickel electrolysis mixed acid system, and realizes safe, efficient and accurately controlled deep copper removal of the hydrogen sulfide.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides an application hydrogen sulfide gas gets rid of device of copper ion among nickel electrolysis mixed acid system, includes efflux gas-liquid mixture reactor and whirl reacting trough, whirl reacting trough middle part is provided with the screen cloth, whirl reacting trough is provided with the spoiler on the screen cloth, whirl reacting trough top is provided with PH meter, ORP meter, thermometer, thermal resistance and pressure sensor, efflux gas-liquid mixture reactor installs in the bottom of whirl reacting trough, the double-phase import department of efflux gas-liquid mixture reactor installs check valve and electromagnetic flow meter for gas respectively.
By adopting the technical scheme, when the device works normally, the ion mixed liquid and the hydrogen sulfide gas enter the cyclone reaction tank through the jet flow gas-liquid mixing reactor, the cyclone reaction tank is used as a main reaction place, and the reaction chemical formula is H2S+Cu2+→CuS↓+2H+、H2S+Ni2+→NiS↓+2H+、Cu2++NiS→CuS↓+Ni2+", thereby realizing the removal of copper ions in the nickel electrolysis mixed acid system; when the hydrogen sulfide gas enters the jet flow gas-liquid mixing reactor, the flow direction of the hydrogen sulfide gas is ensured by the one-way valve for gas, the leakage of the hydrogen sulfide which is a highly toxic gas is avoided, and the safety is improved;
after entering the cyclone reaction tank, the gas-liquid mixture advances from bottom to top under the action of hydraulic pressure, and the mixture forms four states in the whole advancing process, which are sequentially as follows: the device comprises an impulse rotational flow state formed by spraying of a jet flow gas-liquid mixing reactor, a vortex state formed by the impulse rotational flow state, a diffusion state formed by cutting of a screen and a gentle rising state formed by participation of a spoiler; the above four states have the following effects on copper ion removal: the mixed liquid spirally flows upwards at a high speed in the swirling flow impacting state and reacts to form a large amount of copper sulfide sediment, hydrogen sulfide bubbles in the mixed liquid slowly grow along with the flowing bubbles of the solution in the swirling flow state, the growing bubbles are cut by a screen mesh and then become small bubbles, gas-liquid reaction is carried out to a large extent in the diffusion state, the mixed liquid in the diffusion state keeps a weakened swirling flow form, and the swirling flow is further reduced to enter a gentle rising state after the mixed liquid in the diffusion state participates in a spoiler, so that the reaction time is further increased, the reaction effect is enhanced, and gas and liquid which do not participate in the reaction are fully reacted;
the cyclone reaction tank is provided with a PH meter and an ORP meter for monitoring the PH value and the potential value in the reaction process in real time, a thermometer and a thermal resistor for monitoring and adjusting the temperature in the reaction process in real time, a pressure sensor for monitoring the pressure in the reaction process in real time, and the technical conditions are provided for accurately controlling the application by combining the three points;
to sum up, this application has effectively solved the outside leakage of the poisonous and harmful gas of hydrogen sulfide, and copper ion in the mixed acid system of more efficient purification nickel electrolysis has realized safe, high-efficient, the accurate hydrogen sulfide degree of depth decoppering of control.
The invention is further configured to: the jet flow gas-liquid mixing reactor comprises a front-section jet flow mixing component and a rear-section static mixing reaction component.
Through adopting above-mentioned technical scheme, efflux gas-liquid mixture reactor realizes the leading-in and the preliminary mixing of ion mixed liquid and hydrogen sulfide gas by anterior segment efflux mixing element to promote the gas-liquid to mix with higher speed by the static mixing reaction part of back end, thereby realize to inject the technological effect in whirl reacting tank with the fully mixed gas-liquid by efflux gas-liquid mixture reactor.
The invention is further configured to: the front-section jet mixing component comprises a liquid-phase pumping assembly, a gas-phase charging assembly and a jet mixer; the liquid phase pumping assembly comprises a liquid phase pipeline connected to the liquid inlet end of the electromagnetic flowmeter and a liquid feeding pump arranged at the inlet end of the liquid phase pipeline, the inlet end of the liquid feeding pump is provided with a liquid inlet valve, and the outlet end of the liquid feeding pump is provided with a liquid outlet valve; the gas-phase charging assembly is integrally and vertically installed and comprises an input connecting pipe and an installation short connecting pipe, and the gas one-way valve is installed between the input connecting pipe and the installation short connecting pipe; the jet flow mixer comprises a suction chamber communicated with the rear section static mixing reaction part, a contraction section nozzle connected to the suction chamber and a diffusion section connected to the suction chamber, wherein the inlet end of the contraction section nozzle is communicated with the liquid phase pipeline, and the inlet end of the diffusion section is communicated with the installation short connecting pipe.
By adopting the technical scheme, the ionic mixed liquid is introduced by the liquid-phase pumping assembly, the hydrogen sulfide gas is filled by the gas-phase filling assembly, and then the ionic mixed liquid and the hydrogen sulfide gas are mixed by the jet mixer; what needs to be described about the liquid-phase pumping assembly is that the liquid feeding pump provides the flow kinetic energy of the ion mixed liquid, and the on-off of the liquid-phase pipeline is controlled by the double layers of the liquid inlet valve and the liquid outlet valve, so that the ion mixed liquid and the hydrogen sulfide gas are effectively prevented from leaking from the liquid-phase pumping assembly; the gas phase charging assembly is limited to be vertically arranged, so that the gas phase charging assembly is perpendicular to the flow direction of the ion mixed liquid ejected by the liquid phase pumping assembly, and the ion mixed liquid is effectively prevented from being ejected into the gas phase charging assembly; the specific mixing process of the jet flow mixer is that the ion mixed liquid with certain flow rate and pressure enters a contraction section nozzle through a liquid phase pipeline, the flow rate and the hydraulic pressure of the ion mixed liquid are further improved by the contraction section nozzle, the ion mixed liquid with high flow rate is injected into and penetrates through the suction chamber, so that the partial part and the diffusion section of the suction chamber form negative pressure, the hydrogen sulfide gas filled into the diffusion section is sucked by the ion mixed liquid, the ion mixed liquid in a high hydraulic state extrudes the sucked hydrogen sulfide gas to avoid the escape of the hydrogen sulfide gas, and the preliminary mixing of the ion mixed liquid and the hydrogen sulfide gas is realized; in conclusion, the ion mixed liquid and the hydrogen sulfide gas are respectively filled into the liquid-phase pumping assembly and the gas-phase filling assembly, so that the ion mixed liquid and the hydrogen sulfide gas are sequentially filled into the liquid-phase pumping assembly and the gas-phase filling assembly, the control and the monitoring are convenient, the jet mixer utilizes the flow speed and the hydraulic pressure of the ion mixed liquid to suck the hydrogen sulfide gas, and the primary mixing effect of the ion mixed liquid and the hydrogen sulfide gas is improved.
The invention is further configured to: the back-end static mixing reaction component comprises an outer pipe and a corrugated cutting inner pipe arranged in the outer pipe, the section of the corrugated cutting inner pipe is in a regular hexagon, and a through-flow through hole is formed in the pipe wall of the corrugated cutting inner pipe in a penetrating mode.
By adopting the technical scheme, the rear-section static mixing reaction component takes the outer pipe as an external integral structure so as to ensure the sealing and pressure resistance of the rear-section static mixing reaction component; when the liquid flows in the rear-section static mixing reaction part, the corrugations of the corrugated cutting inner pipe and the flow through holes repeatedly cut bubbles, so that the ion mixed liquid and the hydrogen sulfide gas are effectively promoted to be fully mixed, the shape of the corrugated cutting inner pipe is defined as a regular hexagon, and a certain space is formed between the corrugated cutting inner pipe and the outer pipe, so that the flow liquid can pass through the flow through holes.
The invention is further configured to: the back-end static mixing reaction component is also provided with a short-circuit pipeline, two ends of the short-circuit pipeline are respectively provided with a three-way pipe connected to two ends of the outer pipe, and the short-circuit pipeline is provided with an on-off ball valve.
Through adopting above-mentioned technical scheme, take place the PH value unusual in the whirl reaction tank, when only filling into hydrogen sulfide gas or ionic liquid mixture need be emergency, can be through opening break-make ball valve for outer tube and short circuit pipeline supply hydrogen sulfide gas or ionic liquid mixture for the whirl reaction tank jointly, effectively improve the efficiency of urgent tonifying qi or fluid infusion.
The invention is further configured to: the cyclone reaction tank is characterized in that a slag discharge port is formed in the bottom of the cyclone reaction tank, a slag discharge valve is arranged at the slag discharge port, a tail gas adjusting port is formed in the top of the cyclone reaction tank, and a plurality of overflow ports are formed in the top of the cyclone reaction tank.
By adopting the technical scheme, the cyclone reaction tank utilizes the slag discharge port to discharge solid residues mainly comprising copper sulfide, and the ionic liquid after copper removal is discharged from the overflow port.
The invention is further configured to: the top of whirl reacting tank is hourglass hopper-shaped design, and is a plurality of the overflow mouth is vertical opening downward form and sets up in the top upper edge of whirl reacting tank.
By adopting the technical scheme, the shape of the cyclone reaction tank is limited, so that the upward liquid flow velocity is slower, and the hidden danger that solid residues mainly comprising copper sulfide are driven to the top of the cyclone reaction tank by liquid flow is reduced; the liquid in the cyclone reaction tank is in a rotating flowing state, so that the solid residues are mostly concentrated at the central line of the cyclone reaction tank; the top overflow mouth is vertical opening downwards to liquid need flood the entry end side of overflow mouth and can spill over, and then avoids the influence of overflow mouth to the internal pressure of whirl reacting tank.
The invention is further configured to: two first mounting and positioning assemblies are fixed on the symmetrical flanges of the cyclone reaction tank, positioning rods of the first mounting and positioning assemblies extend into the cyclone reaction tank, nuts are welded and fixed on the screen, and the end portions of the first mounting and positioning assemblies are in threaded fit with the nuts.
Through adopting above-mentioned technical scheme, under the prerequisite that does not influence the whole leakproofness of whirl reacting tank, realize the demountable installation of screen cloth to facilitate for changing and examining and repairing the screen cloth.
The invention is further configured to: two second installation positioning assemblies are fixed on the symmetrical flanges of the cyclone reaction tank, positioning rods of the second installation positioning assemblies extend into the cyclone reaction tank and are provided with clamping openings, and the clamping openings are used for clamping the fixed spoilers in an interference manner.
Through adopting above-mentioned technical scheme, under the prerequisite that does not influence the whole leakproofness of whirl reaction tank, realize the demountable installation of spoiler to facilitate for changing and overhauing the spoiler.
The invention is further configured to: the top of the cyclone reaction tank is provided with an overhaul inlet, and a closed end cover is fixed on an overhaul inlet flange.
Through adopting above-mentioned technical scheme, provide and overhaul the entry and supply the workman to get into, facilitate for overhauing this application.
In conclusion, the invention has the following beneficial effects: the problem of leakage of toxic and harmful gases of hydrogen sulfide is effectively solved, copper ions in a nickel electrolysis mixed acid system are purified more efficiently, and safe, efficient and accurate control of deep copper removal of hydrogen sulfide is realized; the jet flow gas-liquid mixing reactor realizes the introduction and preliminary mixing of the ion mixed liquid and the hydrogen sulfide gas by a front-section jet flow mixing component, and promotes the gas-liquid accelerated mixing by a rear-section static mixing reaction component, thereby realizing the technical effect that fully mixed gas-liquid is injected into the rotational flow reaction tank by the jet flow gas-liquid mixing reactor; the liquid-phase pumping assembly and the gas-phase charging assembly are respectively charged with the ion mixed liquid and the hydrogen sulfide gas, so that the ion mixed liquid and the hydrogen sulfide gas can be charged orderly and conveniently controlled and monitored, and the jet flow mixer utilizes the flow rate and the hydraulic pressure of the ion mixed liquid to suck the hydrogen sulfide gas, so that the primary mixing effect of the ion mixed liquid and the hydrogen sulfide gas is improved; when the liquid flows in the rear-section static mixing reaction part, the waves and the through holes of the inner tube are cut by the waves to repeatedly cut bubbles, so that the ion mixed liquid and the hydrogen sulfide gas are effectively and fully mixed; the on-off ball valve can be opened, so that the outer pipe and the short-circuit pipeline jointly supply hydrogen sulfide gas or ion mixed liquid for the cyclone reaction tank, and the efficiency of emergency gas supplement or liquid supplement is effectively improved; the cyclone reaction tank discharges solid residues mainly comprising copper sulfide by using a residue discharge port, and discharges the ionic liquid after copper removal from an overflow port; the shape of the cyclone reaction tank is limited, so that the upward liquid flow velocity is slower, and the hidden danger that solid residues mainly containing copper sulfide are driven to the top of the cyclone reaction tank by liquid flow is reduced; the opposite overflow port is arranged at the edge of the cyclone reaction tank, so that solid residues are prevented from entering the overflow port; the top end overflow port is vertically opened downwards, so that liquid can overflow from the inlet end of the overflow port when the liquid needs to be flooded, and the influence of the overflow port on the internal pressure of the cyclone reaction tank is avoided; on the premise of not influencing the integral sealing performance of the cyclone reaction tank, the detachable installation of the screen is realized, so that convenience is provided for replacing and overhauling the screen; on the premise of not influencing the integral sealing performance of the cyclone reaction tank, the detachable installation of the spoiler is realized, so that convenience is provided for replacing and overhauling the spoiler; the access port is provided for workers to enter, and convenience is brought to overhaul of the application.
Drawings
FIG. 1 is an overall elevation view of the present application;
FIG. 2 is an overall perspective view of the present application, in which a perspective window is provided to facilitate the representation of the swirling flow reaction tank;
FIG. 3 is a schematic view of the overall structure of the jet gas-liquid mixing reactor of the present application;
FIG. 4 is a schematic diagram of the overall construction of the jet mixer of the present application;
FIG. 5 is a schematic structural view of a later stage static mixing reaction element of the present application, with sections and partial cross-sectional views taken for ease of illustration;
fig. 6 is an enlarged view of a portion a of fig. 5, and mainly shows a detachable attachment structure of the screen.
Description of the drawings: 1. a jet gas-liquid mixing reactor; 2. a rotational flow reaction tank; 3. screening a screen; 4. a spoiler; 6. a pH meter; 7. an ORP meter; 8. a thermometer; 8-8, thermal resistance; 9. a pressure sensor; 10. a check valve for gas; 11. an electromagnetic flow meter; 12. a front-end jet mixing component; 13. a back-end static mixing reaction part; 14. pumping the liquid phase into the assembly; 15. the gas phase is charged into the assembly; 16. a jet mixer; 17. a liquid phase conduit; 18. a liquid feeding pump; 19. a liquid inlet valve; 20. a liquid outlet valve; 21. an input connection pipe; 22. installing a short connecting pipe; 23. a suction chamber; 24. a convergent section nozzle; 25. a diffuser section; 26. an outer tube; 27. cutting the inner pipe by corrugation; 28. a flow-through hole; 29. short-circuiting the pipeline; 30. a three-way pipe; 31. a ball valve is switched on and off; 32. a slag discharge port; 33. a slag discharge valve; 34. a tail gas regulating port; 35. an overflow port; 36. a first mounting and positioning assembly; 37. a nut; 38. a second mounting and positioning assembly; 39. clamping the opening; 40. a service entrance; 41. and closing the end cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The device for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas comprises a jet flow gas-liquid mixing reactor 1 and a rotational flow reaction tank 2, wherein a screen 3 is arranged in the middle of the rotational flow reaction tank 2, a spoiler 4 is arranged on the rotational flow reaction tank 2 above the screen 3, a PH meter 6, an ORP meter 7, a thermometer 8, thermal resistors 8-8 and a pressure sensor 9 are arranged at the top of the rotational flow reaction tank 2, the jet flow gas-liquid mixing reactor 1 is arranged at the bottom of the rotational flow reaction tank 2, and a gas check valve 10 and an electromagnetic flowmeter 11 are respectively arranged at two-phase inlets of the jet flow gas-liquid mixing reactor 1.
When the reactor works normally, the ion mixed liquid and the hydrogen sulfide gas enter the cyclone reaction tank 2 through the jet flow gas-liquid mixing reactor 1, the cyclone reaction tank 2 is used as a main reaction place, and the reaction chemical formula is H2S+Cu2+→CuS↓+2H+、H2S+Ni2+→NiS↓+2H+、Cu2++NiS→CuS↓+Ni2+", thereby realizing the removal of copper ions in the nickel electrolysis mixed acid system; when hydrogen sulfide gas enters through the jet flow gas-liquid mixing reactor 1, the flow direction of the hydrogen sulfide gas is ensured by the gas check valve 10, the leakage of the highly toxic gas hydrogen sulfide is avoided, and the safety is improved, when the ion mixed liquid enters through the jet flow gas-liquid mixing reactor 1, the flow of the ion mixed liquid is monitored in real time by the electromagnetic flow meter 11, so that the flow speed of the gas-liquid mixture entering the rotational flow reaction tank 2 is monitored, and further the rotational flow speed of the gas-liquid mixture in the rotational flow reaction tank 2 is controlled; after entering the cyclone reaction tank 2, the gas-liquid mixture advances from bottom to top under the action of hydraulic pressure, and the mixture forms four states in the whole advancing process, which are sequentially as follows: the jet flow gas-liquid mixing reactor is characterized by comprising an impulse rotational flow state formed by jetting of the jet flow gas-liquid mixing reactor 1, a vortex state formed by the impulse rotational flow state, a diffusion state formed by cutting of the screen 3 and a gentle rising state formed by participation of the spoiler 4; the above four states have the following effects on copper ion removal: when the mixed solution is in the eddy flow state, hydrogen sulfide bubbles in the mixed solution slowly grow along with the flowing of the solution, the grown bubbles are divided by the screen 3 and then become small bubbles, gas-liquid reaction is carried out to a large extent when the mixed solution is in the diffusion state, the mixed solution in the diffusion state keeps a weakened eddy form, and the eddy is further weakened after the mixed solution participates in the spoiler 4 and enters a gently rising state, so that the reaction time is further increased, the reaction effect is enhanced, and gas and liquid which do not participate in the reaction are fully reacted; the cyclone reaction tank 2 is provided with a PH meter 6 and an ORP meter 7 for monitoring the PH value and the potential value in the reaction process in real time, a thermometer 8 and a thermal resistor 8-8 for monitoring and adjusting the temperature in the reaction process in real time, and a pressure sensor 9 for monitoring the temperature in the reaction process in real timeThe pressure in the reaction process is controlled, and the three points are combined to provide technical conditions for accurately controlling the application; to sum up, this application has effectively solved the outside leakage of the poisonous and harmful gas of hydrogen sulfide, and copper ion in the mixed acid system of more efficient purification nickel electrolysis has realized safe, high-efficient, the accurate hydrogen sulfide degree of depth decoppering of control.
The jet flow gas-liquid mixing reactor 1 has the following specific structure, as shown in fig. 2 and fig. 3, the jet flow gas-liquid mixing reactor 1 comprises a front-section jet flow mixing component 12 and a rear-section static mixing reaction component 13, so that the jet flow gas-liquid mixing reactor 1 realizes the introduction and preliminary mixing of the ionic mixed liquid and the hydrogen sulfide gas by the front-section jet flow mixing component 12, and promotes the gas-liquid accelerated mixing by the rear-section static mixing reaction component 13, thereby realizing the technical effect that the fully mixed gas and liquid are injected into the cyclone reaction tank 2 by the jet flow gas-liquid mixing reactor 1.
The specific structure of the front-stage jet mixing component 12 is as follows, as shown in fig. 3, the front-stage jet mixing component 12 includes a liquid-phase pumping assembly 14, a gas-phase charging assembly 15 and a jet mixer 16, so that the ion mixed liquid is introduced through the liquid-phase pumping assembly 14, the hydrogen sulfide gas is charged through the gas-phase charging assembly 15, and then the jet mixer 16 completes the preliminary mixing of the ion mixed liquid and the hydrogen sulfide gas.
As shown in fig. 3, the liquid phase pumping assembly 14 includes a liquid phase pipe 17 connected to the liquid inlet end of the electromagnetic flowmeter 11, and a liquid feeding pump 18 disposed at the inlet end of the liquid phase pipe 17, the inlet end of the liquid feeding pump 18 is provided with a liquid inlet valve 19, and the outlet end of the liquid feeding pump is provided with a liquid outlet valve 20; the liquid phase pumping assembly 14 provides the flow kinetic energy of the ion mixed liquid by the liquid feeding pump 18, and the on-off of the liquid phase pipeline 17 is controlled by the liquid inlet valve 19 and the liquid outlet valve 20 in a double-layer mode, so that the ion mixed liquid and the hydrogen sulfide gas are effectively prevented from leaking through the liquid phase pumping assembly 14.
As shown in fig. 3, the gas phase charging assembly 15 is integrally vertically installed, and includes an input connection pipe 21 and an installation short connection pipe 22, and the gas check valve 10 is installed between the input connection pipe 21 and the installation short connection pipe 22; the gas phase charging assembly 15 is limited to be vertically arranged, so that the gas phase charging assembly is perpendicular to the flow direction of the ion mixed liquid ejected by the liquid phase pumping assembly 14, and the ion mixed liquid is effectively prevented from being ejected into the gas phase charging assembly 15.
As shown in fig. 3 and 4, the jet mixer 16 includes a suction chamber 23 communicated with the rear-stage static mixing reaction part 13, a convergent nozzle 24 connected to the suction chamber 23, and a divergent section 25 connected to the suction chamber 23, wherein an inlet end of the convergent nozzle 24 is communicated with the liquid phase pipeline 17, and an inlet end of the divergent section 25 is communicated with the installation nipple 22; the specific mixing process of the jet flow mixer 16 is that the ion mixed liquid with a certain flow rate and pressure enters the contraction section nozzle 24 through the liquid phase pipeline 17, the flow rate and the hydraulic pressure of the ion mixed liquid are further improved by the contraction section nozzle 24, the ion mixed liquid with a high flow rate is injected into and penetrates through the suction chamber 23, so that the part of the suction chamber 23 and the diffusion section 25 form negative pressure, the hydrogen sulfide gas filled into the diffusion section 25 is sucked by the ion mixed liquid, the ion mixed liquid in a high hydraulic pressure state extrudes the sucked hydrogen sulfide gas to avoid the escape of the hydrogen sulfide gas, and the preliminary mixing of the ion mixed liquid and the hydrogen sulfide gas is realized.
The structure of the rear static mixing reaction part 13 is as follows, as shown in fig. 3 and 5, the rear static mixing reaction part 13 includes an outer tube 26 and a corrugated cutting inner tube 27 fixed in the outer tube by interference insertion, the cross section of the corrugated cutting inner tube 27 is regular hexagon, and a through-flow through hole 28 is formed through the tube wall of the corrugated cutting inner tube 27; when the liquid flows in the rear-stage static mixing reaction part 13, the corrugations of the corrugated cut inner tube 27 and the flow through holes 28 repeatedly cut bubbles, so that the sufficient mixing of the ion mixed liquid and the hydrogen sulfide gas is effectively promoted, and the shape of the corrugated cut inner tube 27 is defined as a regular hexagon so that a certain space is provided between the corrugated cut inner tube and the outer tube 26 to ensure the passing capability of the flow liquid through the flow through holes 28.
In practical application, it is found that the flow velocity of fluid is affected by the arrangement of the corrugated cutting inner tube 27 of the rear-section static mixing reaction part 13, so that the problem of rapidly trimming the PH value in the cyclone reaction tank 2 is not facilitated, for this reason, as shown in fig. 3, the rear-section static mixing reaction part 13 is further provided with a short-circuit pipeline 29, two ends of the short-circuit pipeline 29 are hermetically sleeved with three-way pipes 30 and connected to two ends of the outer tube 26, and the short-circuit pipeline 29 is provided with an on-off ball valve 31; when the PH value is abnormal in the cyclone reaction tank 2 and only hydrogen sulfide gas or ion mixed liquid needs to be filled in an emergency, the on-off ball valve 31 can be opened, so that the outer pipe 26 and the short-circuit pipeline 29 jointly supply hydrogen sulfide gas or ion mixed liquid for the cyclone reaction tank 2, and the efficiency of emergency gas supply or liquid supplement is effectively improved.
This application is through the ionic liquid after following mode discharge decoppering and the solid residue who takes copper sulphide as leading, as shown in fig. 2, the sealed welded fastening in bottom of whirl reacting tank 2 has row cinder notch 32, arrange cinder notch 32 and install slag extractor 33, 2 top welded fastening in whirl reacting tank have tail gas regulation mouth 34, 2 top welded fastening in whirl reacting tank have a plurality of overflow mouths 35, thereby whirl reacting tank 2 utilizes row cinder notch 32 to discharge the solid residue who takes copper sulphide as leading, ionic liquid after the decoppering is discharged by overflow mouth 35.
It should be noted that, as shown in fig. 1 and fig. 2, the top of the cyclone reaction tank 2 is designed in a funnel shape, so that the upward liquid flow velocity in the cyclone reaction tank 2 is gradually reduced, thereby reducing the hidden danger that the solid residue mainly containing copper sulfide is driven to the top of the cyclone reaction tank 2 by the liquid flow; the overflow ports 35 are fixedly arranged on the top upper edge of the cyclone reaction tank 2 in a vertical opening downward shape, so that solid residues are prevented from entering the overflow ports 35, and the solid residues are mostly concentrated at the vertical central line of the cyclone reaction tank 2 because the whole liquid in the cyclone reaction tank 2 has a rotating flowing state; it should be further noted that the overflow port 35 is vertically open and faces downward, so that liquid can overflow from the inlet end of the overflow port 35, and the influence of the overflow port 35 on the internal pressure of the cyclone reaction tank 2 is reduced.
The screen cloth 3 is installed in whirl reacting tank 2 through following mode, as shown in figure 2, figure 6, 2 symmetric flanges in whirl reacting tank are fixed with two first installation locating component 36, the locating lever of first installation locating component 36 extends into whirl reacting tank 2 in, screen cloth 3 welded fastening has nut 37, the tip and the nut 37 screw-thread fit of first installation locating component 36, thereby under the prerequisite that does not influence 2 whole leakproofness in whirl reacting tank, realize the demountable installation of screen cloth 3, and then for changing and examining and repairing screen cloth 3 and facilitate.
The spoiler 4 is installed in the rotational flow reaction tank 2 in the following way, as shown in fig. 2, the symmetric flange of the rotational flow reaction tank 2 is fixed with two second installation positioning components 38, the positioning rod of the second installation positioning components 38 extends into the rotational flow reaction tank 2 and is provided with a clamping opening 39 in a machining and forming mode, the clamping opening 39 is in interference fit with the fixed spoiler 4, thereby under the premise of not influencing the overall sealing performance of the rotational flow reaction tank 2, the detachable installation of the spoiler 4 is realized, and then the convenience is provided for replacing and overhauling the spoiler 4.
In order to facilitate the maintenance of the cyclone reaction tank 2, as shown in fig. 2, a maintenance inlet 40 is provided at the top of the cyclone reaction tank 2, and a closed end cover 41 is flange-fixed to the maintenance inlet 40, so that a worker can enter the inside of the cyclone reaction tank 2 through the maintenance inlet 40 after the closed end cover 41 is removed, thereby facilitating the maintenance.
The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. A device for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas is characterized in that: the device comprises a jet flow gas-liquid mixing reactor (1) and a rotational flow reaction tank (2), wherein a screen (3) is arranged in the middle of the rotational flow reaction tank (2), a spoiler (4) is arranged on the screen (3) of the rotational flow reaction tank (2), a PH meter (6), an ORP meter (7), a thermometer (8), a thermal resistor (8-8) and a pressure sensor (9) are arranged at the top of the rotational flow reaction tank (2), the jet flow gas-liquid mixing reactor (1) is installed at the bottom of the rotational flow reaction tank (2), and a gas check valve (10) and an electromagnetic flowmeter (11) are respectively installed at the two-phase inlet of the jet flow gas-liquid mixing reactor (1).
2. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 1, wherein: the jet flow gas-liquid mixing reactor (1) comprises a front-section jet flow mixing component (12) and a rear-section static mixing reaction component (13).
3. The apparatus for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas as claimed in claim 2, wherein: the front-section jet mixing component (12) comprises a liquid-phase pumping assembly (14), a gas-phase charging assembly (15) and a jet mixer (16);
the liquid phase pumping assembly (14) comprises a liquid phase pipeline (17) connected to the liquid inlet end of the electromagnetic flowmeter (11) and a liquid feeding pump (18) arranged at the inlet end of the liquid phase pipeline (17), the inlet end of the liquid feeding pump (18) is provided with a liquid inlet valve (19), and the outlet end of the liquid feeding pump is provided with a liquid outlet valve (20);
the gas-phase charging assembly (15) is integrally and vertically installed and comprises an input connecting pipe (21) and an installation short connecting pipe (22), and the gas one-way valve (10) is installed between the input connecting pipe (21) and the installation short connecting pipe (22);
the jet flow mixer (16) comprises a suction chamber (23) communicated with the rear-section static mixing reaction part (13), a contraction section nozzle (24) connected to the suction chamber (23), and a diffusion section (25) connected to the suction chamber (23), wherein the inlet end of the contraction section nozzle (24) is communicated with the liquid phase pipeline (17), and the inlet end of the diffusion section (25) is communicated with the installation short connecting pipe (22).
4. The apparatus for removing copper ions in a nickel electrolysis mixed acid system by using hydrogen sulfide gas as claimed in claim 2, wherein: the rear-section static mixing reaction component (13) comprises an outer pipe (26) and a corrugated cutting inner pipe (27) arranged in the outer pipe, the section of the corrugated cutting inner pipe (27) is in a regular hexagon, and a through-flow through hole (28) is formed in the pipe wall of the corrugated cutting inner pipe in a penetrating mode.
5. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 4, wherein: the rear-section static mixing reaction part (13) is further provided with a short-circuit pipeline (29), two ends of the short-circuit pipeline (29) are respectively provided with a three-way pipe (30) connected to two ends of the outer pipe (26), and the short-circuit pipeline (29) is provided with an on-off ball valve (31).
6. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 1, wherein: the cyclone reaction tank is characterized in that a slag discharge port (32) is formed in the bottom of the cyclone reaction tank (2), a slag discharge valve (33) is arranged at the slag discharge port (32), a tail gas adjusting port (34) is formed in the top of the cyclone reaction tank (2), and a plurality of overflow ports (35) are formed in the top of the cyclone reaction tank (2).
7. The apparatus for removing copper ions in the nickel electrolysis mixed acid system by using hydrogen sulfide gas as claimed in claim 6, wherein: the top of whirl reacting tank (2) is hopper-shaped design, and is a plurality of overflow mouth (35) are vertical opening downward form and set up in the top upper edge of whirl reacting tank (2).
8. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 1, wherein: two first mounting and positioning assemblies (36) are fixed to the symmetrical flanges of the cyclone reaction tank (2), positioning rods of the first mounting and positioning assemblies (36) extend into the cyclone reaction tank (2), nuts (37) are welded and fixed to the screen (3), and the end portions of the first mounting and positioning assemblies (36) are in threaded fit with the nuts (37).
9. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 1, wherein: two second installation positioning components (38) are fixed on the symmetrical flanges of the cyclone reaction tank (2), positioning rods of the second installation positioning components (38) extend into the cyclone reaction tank (2) and are provided with clamping openings (39), and the clamping openings (39) are used for clamping the fixed spoiler (4) in an interference manner.
10. The device for removing copper ions in the nickel electrolysis mixed acid system by using the hydrogen sulfide gas as claimed in claim 1, wherein: the top of the cyclone reaction tank (2) is provided with an overhaul inlet (40), and a closed end cover (41) is fixed on the overhaul inlet (40) through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406448.5A CN112387139A (en) | 2020-12-03 | 2020-12-03 | Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406448.5A CN112387139A (en) | 2020-12-03 | 2020-12-03 | Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas |
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| CN202011406448.5A Pending CN112387139A (en) | 2020-12-03 | 2020-12-03 | Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957490A (en) * | 2021-11-05 | 2022-01-21 | 金川集团股份有限公司 | Electrolytic nickel purification and impurity removal reaction tank and method thereof |
| CN114737222A (en) * | 2022-04-27 | 2022-07-12 | 金川集团股份有限公司 | Process for deeply removing copper, arsenic and lead in nickel electrolysis mixed acid system anolyte |
-
2020
- 2020-12-03 CN CN202011406448.5A patent/CN112387139A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957490A (en) * | 2021-11-05 | 2022-01-21 | 金川集团股份有限公司 | Electrolytic nickel purification and impurity removal reaction tank and method thereof |
| CN114737222A (en) * | 2022-04-27 | 2022-07-12 | 金川集团股份有限公司 | Process for deeply removing copper, arsenic and lead in nickel electrolysis mixed acid system anolyte |
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