CN111547796A - Low-temperature evaporation method and equipment for metal electrolysis waste liquid - Google Patents
Low-temperature evaporation method and equipment for metal electrolysis waste liquid Download PDFInfo
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- CN111547796A CN111547796A CN202010426327.0A CN202010426327A CN111547796A CN 111547796 A CN111547796 A CN 111547796A CN 202010426327 A CN202010426327 A CN 202010426327A CN 111547796 A CN111547796 A CN 111547796A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
Abstract
The invention relates to a low-temperature evaporation method of metal electrolysis waste liquid, relating to the technical field of precious metal recovery and comprising the following steps: s1, preparing an evaporation chamber, a transfer chamber and a negative high-pressure chamber, wherein the evaporation chamber, the transfer chamber and the negative high-pressure chamber are sequentially connected; s2, filling the electrolytic waste liquid into the evaporation chamber, heating the electrolytic waste liquid in the evaporation chamber at a low temperature, and then adjusting the air pressure on the upper side of the liquid level of the electrolytic waste liquid in the evaporation chamber to be negative and low pressure so as to evaporate water in the evaporation chamber; s3, pumping air to adjust the air pressure in the negative high-pressure chamber to negative high pressure, and communicating the evaporation chamber, the transfer chamber and the negative high-pressure chamber to lead the waste liquid steam in the evaporation chamber to the negative high-pressure chamber through the transfer chamber; s4, discharging waste liquid steam in the negative high-pressure chamber; and S5, repeating the steps S2-S4 until the waste liquid in the evaporation chamber is evaporated. The invention has the effect of saving energy.
Description
Technical Field
The invention relates to the technical field of precious metal recovery, in particular to a low-temperature evaporation method and equipment for metal electrolysis waste liquid.
Background
Along with the development of science and technology, the social progress and the improvement of the living standard of people, the use of electronic products in the life of people is more and more common. These electronic products such as connectors, circuit boards, etc. contain a large amount of gold, silver and copper metals, which all have high recycling value. Therefore, the recovery and utilization of the noble metal have great economic and social benefits. The traditional waste metal recovery process generally comprises the steps of gold removal, electrolysis, aqua regia, reduction and baking, gold seeds and waste water are obtained after roasting, and then the waste water is recycled. The waste metal electrolysis regret generates electrolysis waste liquid which also contains a plurality of metal ions, and the electrolysis waste liquid needs to be evaporated to separate out metal salt in the prior art so as to be convenient for subsequent recovery treatment. The existing evaporation process generally adopts a high-temperature heating mode, the time for starting heating and closing heat dissipation is long, and the energy is not saved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a low-temperature evaporation method of metal electrolysis waste liquid and equipment thereof, which have the effect of saving energy.
The above object of the present invention is achieved by the following technical solutions:
a low-temperature evaporation method of metal electrolysis waste liquid comprises the following steps: s1, preparing an evaporation chamber, a transfer chamber and a negative high-pressure chamber, wherein the evaporation chamber, the transfer chamber and the negative high-pressure chamber are sequentially connected; s2, filling the electrolytic waste liquid into the evaporation chamber, heating the electrolytic waste liquid in the evaporation chamber at a low temperature, and then adjusting the air pressure on the upper side of the liquid level of the electrolytic waste liquid in the evaporation chamber to be negative and low pressure so as to evaporate water in the evaporation chamber; s3, pumping air to adjust the air pressure in the negative high-pressure chamber to negative high pressure, and communicating the evaporation chamber, the transfer chamber and the negative high-pressure chamber to lead the waste liquid steam in the evaporation chamber to the negative high-pressure chamber through the transfer chamber; s4, discharging waste liquid steam in the negative high-pressure chamber; and S5, repeating the steps S2-S4 until the waste liquid in the evaporation chamber is evaporated.
By adopting the technical scheme, in the step S2, the electrolytic waste liquid is in a low-temperature and low-pressure environment, so that the boiling point of water in the electrolytic waste liquid is reduced, and the water in the electrolytic waste liquid is evaporated, then in the step S3, the air pressure in the negative high-pressure chamber is lower than that in the evaporation chamber, when the evaporation chamber, the transfer chamber and the negative high-pressure chamber are communicated, the waste liquid steam evaporated in the evaporation chamber enters the negative high-pressure chamber through the transfer chamber, and then in the step S4, the waste liquid formed by condensing the waste liquid steam in the negative high-pressure chamber is led out, so that the solid-liquid separation in the metal electrolytic waste liquid is realized, and the; compared with the existing high-temperature heating mode, the low-temperature evaporation method of the metal electrolysis waste liquid does not need to be heated to high temperature for a long time, and does not need to be radiated for a long time when being closed, thereby reducing the loss of heat and being beneficial to saving energy.
A low-temperature evaporation device for metal electrolysis waste liquid comprises a tank body arranged horizontally, an auxiliary tank fixed at one end of the tank body, a floating plate arranged horizontally in the tank body and a low-temperature heating sleeve fixed at the bottom of the tank body; the peripheral edges of the floating plates are respectively connected with the peripheral inner side walls of the tank body in a sealing way; in the tank body, the space below the floating plate is an evaporation chamber, the space above the floating plate is a transfer chamber, and the space inside the auxiliary tank is a negative high-pressure chamber; the tank body is also provided with an air pressure assembly for forming a negative low-pressure environment in the evaporation chamber and a pressure pumping assembly for forming a negative high-pressure environment in the negative high-pressure chamber; the air pressure assembly comprises a first vacuum pump fixed on the tank body, an exhaust pipe arranged on the tank body and communicated with the inner wall of the evaporation chamber, and a first electromagnetic valve fixedly arranged on the exhaust pipe, wherein the first vacuum pump is communicated with the exhaust pipe; the pressure pumping assembly comprises a second vacuum pump fixedly mounted on the outer side wall of the auxiliary tank and communicated with the negative high-pressure chamber, a connecting tank arranged at the top of the tank body, a mounting pipe arranged at the bottom of the connecting tank, a communicating pipe arranged on one side of the connecting tank and a second electromagnetic valve fixedly mounted on the mounting pipe, the upper end of the mounting pipe is communicated with the connecting tank, and the lower end of the mounting pipe is connected with the tank body and communicated with the transfer chamber; one end of the communicating pipe is communicated with the connecting tank, and the other end of the communicating pipe is communicated with the negative high-pressure chamber; and a drain valve communicated with the negative high-pressure chamber is fixedly arranged on the auxiliary tank.
By adopting the technical scheme, when the electrolytic waste liquid is introduced into the tank body, the electrolytic waste liquid is positioned in the evaporation chamber on the lower side of the floating plate, the first vacuum pump is started, the first electromagnetic valve is opened, partial air in the evaporation chamber is exhausted out of the evaporation chamber through the exhaust pipe and the first vacuum pump, so that the evaporation chamber is in a negative low-pressure environment, meanwhile, the low-temperature heating sleeve heats the tank body, so that the evaporation chamber is in a low-temperature low-pressure environment, so that the electrolytic waste liquid is evaporated to generate waste liquid steam, then the second vacuum pump is started, so that the negative high-pressure chamber in the auxiliary tank is in a negative high-pressure environment, then the second electromagnetic valve is opened, so that the negative high-pressure chamber, the transfer chamber and the evaporation chamber are communicated, so that the waste liquid steam evaporated in the evaporation chamber enters the negative high-pressure chamber in, and the second vacuum pump replenishes air into the auxiliary tank, then the drain valve is opened, and the waste liquid in the negative high-pressure chamber is discharged, so that the solid-liquid separation of the electrolytic waste liquid is realized.
The present invention in a preferred example may be further configured to: the tank body is also internally provided with a piston rod which is connected with the floating plate and the inner top surface of the tank body, and the floating plate is in sliding fit with the inner wall of the tank body and is movably sealed; and the inner wall of the tank body is provided with an instantaneous through assembly which is used for communicating the transfer chamber with the evaporation chamber when the floating plate rises.
Through adopting above-mentioned technical scheme, when being in low temperature low pressure environment in the evaporating chamber, electrolysis waste liquid evaporation play waste liquid steam, then the second solenoid valve opens, make intercommunication in transfer chamber and the negative hyperbaric chamber, thereby make kickboard upside atmospheric pressure be less than kickboard downside atmospheric pressure, thereby make the kickboard move up, link up evaporating chamber and transfer chamber until the instantaneous subassembly that link up, thereby make in the evaporating chamber waste liquid steam inhale transfer chamber and the negative hyperbaric chamber in the twinkling of an eye, thereby a large amount of waste liquid steam in the evaporating chamber has been discharged, the steam extraction is efficient, in addition, link up evaporating chamber and transfer chamber again after moving up on the kickboard, be favorable to preventing that electrolysis waste liquid from receiving the violent change of atmospheric pressure and sputtering to the kickboard on.
The present invention in a preferred example may be further configured to: the section of the tank body is circular, the floating plate is arranged on the upper side of the axis of the tank body, and the floating plate is in sliding fit with the inner side walls of the two ends of the tank body and is movably sealed; the end face of the edge of the floating plate close to the arc-shaped inner wall of the tank body is provided with a sealing groove extending along the edge of the floating plate, and an elastic strip is fixed in the sealing groove; still be equipped with in the seal groove with the laminating of seal groove inner wall and the complex sealed lug that slides, sealed lug one side wear out the seal groove and with the arc inner wall of the jar body supports tightly, the opposite side be located the seal groove and with the elastic strip is fixed.
Through adopting above-mentioned technical scheme, when the air pressure of kickboard upside was less than kickboard downside air pressure, the kickboard shifts up because of the air pressure difference, and at this moment, the arc inner wall of the sealed lug on the kickboard and the jar body supports tightly and shifts up to make sealed lug take in the seal groove along the arc inner wall radian of the jar body gradually, thereby make the kickboard keep the activity with the arc inner wall of the jar body sealed.
The present invention in a preferred example may be further configured to: the instantaneous through assembly comprises a top plate which is attached to and fixed with the arc-shaped inner wall of the tank body, an air channel which is arranged on the surface of the top plate far away from the inner wall of the tank body, and a sliding-in strip which is fixed on the end surface of the lower edge of the top plate and is convenient for the sealing lug to slide on the top plate, and the top plate is arranged on the upper side of the floating plate; the length direction of air channel follows the top piece surface extends from top to bottom.
Through adopting above-mentioned technical scheme, when kickboard upside atmospheric pressure is less than kickboard downside atmospheric pressure, the kickboard shifts up because the atmospheric pressure difference for in the sealed sand grip income seal groove, along with shifting up of kickboard, the kickboard slides up the top piece through the slip-in strip gradually, both sides about the air channel both ends are located the kickboard, thereby the evaporation chamber and the transfer chamber of both sides link up in the twinkling of an eye about making the kickboard, need not the link up of extra electrical control evaporation chamber and transfer chamber.
The present invention in a preferred example may be further configured to: the cross-sectional area of the vent groove is gradually increased from bottom to top.
Through adopting above-mentioned technical scheme, when waste liquid steam got into in a large number the burden hyperbaric chamber, the atmospheric pressure difference between transfer chamber and the steam formula weakens for the kickboard descends one section, and the cross sectional area through waste liquid steam in the air channel is grow gradually this moment for through more waste liquid steam.
The present invention in a preferred example may be further configured to: the air pressure assembly further comprises a Y-shaped pipe, the Y-shaped pipe comprises a first ventilation end communicated with the first vacuum pump, a second ventilation end communicated with the negative high-pressure chamber in the auxiliary tank and a third ventilation end communicated with the outside air, a third electromagnetic valve is fixedly mounted on the third ventilation end, and a fourth electromagnetic valve is fixedly mounted on the second ventilation end.
Through adopting above-mentioned technical scheme, when metal electrolysis waste liquid just got into in the evaporating chamber, the fourth solenoid valve was closed, and the third solenoid valve is opened, and first vacuum pump starts, and the air in the extraction evaporating chamber is to external world to make and be in the negative low pressure environment in the evaporating chamber, and when the evaporation cycle of waste liquid steam began, the fourth solenoid valve was opened, and the third solenoid valve is closed, and first vacuum pump was opened this moment, and the air in the extraction evaporating chamber and waste liquid steam get into in the negative high-pressure chamber, prevent that waste liquid steam from revealing.
The present invention in a preferred example may be further configured to: the piston rod comprises a piston cylinder fixed with the upper surface of the floating plate, a piston block arranged in the piston cylinder and matched with the inner wall of the piston cylinder in a sliding manner, a fixed rod vertically arranged in the tank body, a fixed ring block fixed on the outer wall of the top of the tank body and a fixed cover sleeved on the fixed ring block; the lower end of the fixed rod penetrates into the opening of the piston cylinder and is fixed with the piston block, and the upper end of the fixed rod sequentially penetrates through the inner top surface of the tank body, the outer wall of the tank body, the fixed ring block and the fixed cover; the fixed rod is movably sealed with the tank body and the fixed ring block, and the fixed rod is rotatably connected with the fixed cover; the inner side wall of the fixed cover is in threaded fit with the outer side wall of the fixed ring block, and the upper surface of the fixed ring block is attached and fixed with a rubber sheet which is abutted against the inner top surface of the fixed cover.
Through adopting above-mentioned technical scheme, when fixed lid is rotatory, fixed lid has the ascending displacement of vertical side for fixed ring piece and jar body to having driven the dead lever and having reciprocated, having adjusted the height of dead lever and piston piece, thereby be convenient for adjust the lift stroke of kickboard.
In summary, the invention includes at least one of the following beneficial technical effects:
compared with the existing high-temperature heating mode, the low-temperature evaporation method of the metal electrolysis waste liquid does not need to be heated to high temperature for a long time, and does not need to be radiated for a long time when being closed, thereby reducing the loss of heat and being beneficial to saving energy;
when the evaporation chamber is in a low-temperature low-pressure environment, waste liquid steam is evaporated from the electrolytic waste liquid, then the second electromagnetic valve is opened, the transfer chamber is communicated with the negative high-pressure chamber, so that the air pressure on the upper side of the floating plate is smaller than the air pressure on the lower side of the floating plate, the floating plate moves upwards until the instantaneous through assembly penetrates through the evaporation chamber and the transfer chamber, the waste liquid steam in the evaporation chamber is instantaneously sucked into the transfer chamber and the negative high-pressure chamber, a large amount of waste liquid steam in the evaporation chamber is discharged, the steam discharging efficiency is high, in addition, the floating plate moves upwards and then penetrates through the evaporation chamber and the transfer chamber, and the electrolytic waste liquid is prevented from being splashed onto the floating plate;
when the air pressure on the upper side of the floating plate is lower than the air pressure on the lower side of the floating plate, the floating plate moves up due to the air pressure difference, at the moment, the sealing lug on the floating plate is tightly abutted against the arc-shaped inner wall of the tank body and moves up, so that the sealing lug is gradually retracted into the sealing groove along the radian of the arc-shaped inner wall of the tank body, and the floating plate and the arc-shaped inner wall of the tank body are movably sealed.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a schematic view of the structure of the sealing tab.
Reference numerals: 1. a tank body; 2. an auxiliary tank; 21. a drain valve; 3. a floating plate; 31. a sealing groove; 32. an elastic strip; 33. a sealing tab; 4. a low temperature heating jacket; 5. a can lid; 51. a feed inlet; 52. a discharge port; 53. filling blocks; 6. a piston rod; 61. a piston cylinder; 62. a piston block; 63. fixing the rod; 64. a fixed ring block; 65. a fixed cover; 7. an air pressure assembly; 71. a first vacuum pump; 72. an air exhaust pipe; 73. a first solenoid valve; 74. a Y-shaped tube; 741. a third electromagnetic valve; 742. a fourth solenoid valve; 8. a pumping assembly; 81. a second vacuum pump; 82. a connecting tank; 83. installing a pipe; 84. a communicating pipe; 85. a second solenoid valve; 9. a transient pass-through assembly; 91. a topsheet; 92. a vent channel; 93. and sliding into the strip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment.
The invention discloses a low-temperature evaporation method of metal electrolysis waste liquid, which comprises the following steps: s1, preparing an evaporation chamber, a transfer chamber and a negative high-pressure chamber, wherein the evaporation chamber, the transfer chamber and the negative high-pressure chamber are sequentially connected; s2, filling the electrolytic waste liquid into the evaporation chamber, heating the electrolytic waste liquid in the evaporation chamber at a low temperature, and then adjusting the air pressure on the upper side of the liquid level of the electrolytic waste liquid in the evaporation chamber to be negative and low pressure so as to evaporate water in the evaporation chamber; s3, pumping air to adjust the air pressure in the negative high-pressure chamber to negative high pressure, and communicating the evaporation chamber, the transfer chamber and the negative high-pressure chamber to lead the waste liquid steam in the evaporation chamber to the negative high-pressure chamber through the transfer chamber; s4, discharging waste liquid steam in the negative high-pressure chamber; and S5, repeating the steps S2-S4, wherein the negative low pressure value adjusted in the evaporation chamber is gradually reduced in each step S2, and the negative high pressure value in the negative high pressure chamber is correspondingly reduced in each step S3 until the waste liquid in the evaporation chamber is completely evaporated.
The implementation principle of the embodiment is as follows: in step S2, the electrolytic waste liquid is in a low-temperature low-pressure environment, so that the boiling point of water in the electrolytic waste liquid is reduced, thereby evaporating the water in the electrolytic waste liquid, then in step S3, the air pressure in the negative high-pressure chamber is lower than that in the evaporation chamber, when the evaporation chamber, the transfer chamber and the negative high-pressure chamber are communicated, the waste liquid steam evaporated in the evaporation chamber enters the negative high-pressure chamber through the transfer chamber, and then in step S4, the waste liquid formed by condensing the waste liquid steam in the negative high-pressure chamber is led out, thereby separating the solid from the liquid in the metal electrolytic waste liquid, and facilitating the subsequent recovery treatment; compared with the existing high-temperature heating mode, the low-temperature evaporation method of the metal electrolysis waste liquid does not need to be heated to high temperature for a long time, and does not need to be radiated for a long time when being closed, thereby reducing the loss of heat and being beneficial to saving energy.
Example two.
Referring to fig. 1, the low temperature evaporation equipment for metal electrolysis waste liquid disclosed by the invention comprises a tank body 1, an auxiliary tank 2 arranged at one end of the tank body 1, a floating plate 3 horizontally arranged in the tank body 1 and a low temperature heating jacket 4 arranged at the bottom of the tank body 1. The tank body 1 is a hollow structure in the cylinder, the axis of the tank body is horizontal, and one end of the tank body 1, which is far away from the auxiliary tank 2, is communicated with the outside and is provided with a tank cover 5. The tank cover 5 is in a shape of a dome, and the opening end face of the tank cover is overlapped and fixed with the opening end face of one end of the tank body 1 far away from the auxiliary tank 2. Be equipped with feed inlet 51 and discharge gate 52 on the cover 5, feed inlet 51 and discharge gate 52 are by current last unloading structure, and feed inlet 51 sets up in discharge gate 52 upside, and operating personnel passes through feed inlet 51 with the leading-in jar body 1 of electrolysis waste liquid, clear up out jar body 1 with jar remaining residue after 1 internal evaporation through discharge gate 52. The auxiliary tank 2 is a hollow structure in the cylinder, the axis of the auxiliary tank is superposed with the axis of the tank body 1, the length of the auxiliary tank 2 is smaller than that of the tank body 1, and one end face of the auxiliary tank 2 is superposed with and fixed to one end face of the tank body 1 far away from the tank cover 5. The low-temperature heating jacket 4 is arc-shaped plate-shaped and made of ceramics, the arc-shaped surface with smaller area of the low-temperature heating jacket 4 is attached and fixed with the outer wall of the tank body 1, and the heating wire is embedded in the low-temperature heating jacket 4 and used for heating the low-temperature heating jacket 4 and the bottom of the tank body 1.
Referring to fig. 1, a filling block 53 is arranged in the can cover 5, the filling block 53 is in an arc petal shape, the arc surface of the filling block 53 is attached and fixed with the inner wall of the can cover 5, the bottom surface of the filling block 53 is horizontally arranged, and the other surface of the filling block 53 is close to the inside of the can body 1 and is vertically arranged. The floating plate 3 is rectangular plate-shaped, and its level sets up in jar body 1, and the terminal surface at floating plate 3 both ends slides the cooperation and the activity is sealed with the vertical inside wall of jar body 1 and the vertical lateral wall of filling block 53 respectively, and it is shown to combine fig. 2, and the seal groove 31 has been seted up to the both sides terminal surface of floating plate 3, and the opening of seal groove 31 is the rectangle, and the both ends terminal surface intercommunication of seal groove 31 and floating plate 3 is equipped with elastic strip 32 and sealed lug 33 in the seal groove 31. The elastic strip 32 is a strip structure with a rectangular cross section, is made of elastic rubber, and is disposed in the sealing groove 31, and the length direction of the elastic strip 32 is the same as the length direction of the sealing groove 31. The upper surface of the elastic strip 32 is fixed to the inner top surface of the sealing groove 31, the bottom surface of the elastic strip 32 is fixed to the inner bottom surface of the sealing groove 31, and the sidewall of the elastic strip 32, which is far away from the arc-shaped inner wall of the tank body 1, is overlapped and fixed to the inner sidewall of the sealing groove 31. The sealing protruding pieces 33 are rectangular pieces horizontally disposed in the sealing groove 31, and the upper surfaces and the bottom surfaces of the sealing protruding pieces 33 respectively engage with the inner top surface and the inner bottom surface of the sealing groove 31 and are in sliding fit. The end faces of the two ends of the sealing lug 33 are respectively flush with the end faces of the two ends of the floating plate 3, the end face of the edge of one side of the sealing lug 33 positioned in the sealing groove 31 is fixed with the elastic strip 32, and the end face of the other side of the sealing lug 33 penetrates through the sealing groove 31. The end surface of the edge of one side of the sealing lug 33, which is located outside the sealing groove 31, is arc-shaped and abuts against the arc-shaped inner wall of the tank body 1, and the elastic strip 32 is compressed, so that the sealing convex strip abuts against the arc-shaped inner wall of the tank body 1, and the sealing convex strip is connected with the tank body 1 in a sealing manner.
Referring to fig. 1, the tank 1 is further provided with a piston rod 6, an air pressure assembly 7, a pressure pumping assembly 8 and an instant through assembly 9. Piston rod 6 includes piston cylinder 61, piston block 62, dead lever 63, retaining ring piece 64 and fixed lid 65, piston cylinder 61 is the circular shape tubular structure for the opening, its opening sets up, piston cylinder 61 is vertical to be set up in jar body 1 and to be located the 3 upsides of kickboard, the lower extreme and the 3 fixed surfaces of kickboard of piston cylinder 61, and piston cylinder 61 upper end is equipped with the spacing ring piece, the spacing ring piece is ring shape cubic, the axis coincidence of its axis and piston cylinder 61, spacing ring piece lateral wall is fixed with piston cylinder 61 inside wall, and spacing ring piece upper surface flushes with piston cylinder 61 up end terminal surface. The piston block 62 is a circular block and is disposed in the piston cylinder 61, and the side wall of the piston block 62 is slidably engaged with the inner side wall of the piston cylinder 61. The fixing rod 63 is a rod-shaped structure with a circular cross section and is vertically arranged, and the lower end of the fixing rod 63 penetrates through the limiting ring block and is fixed with the upper surface of the piston block 62. The fixed ring block 64 is in a circular ring block shape, is arranged outside the tank body 1 and is positioned at the top of the tank body 1, the bottom surface of the fixed ring block 64 is attached and fixed with the outer wall of the tank body 1, and the axis of the fixed ring block 64 is coincided with the axis of the piston cylinder 61. The fixing cover 65 is a circular cover with an opening facing downward, the fixing cover 65 is sleeved on the fixing ring block 64, and the inner side wall of the fixing cover 65 is in threaded fit with the outer side wall of the fixing ring block 64. The upper surface of the fixed ring block 64 is fixed with a rubber sheet which is in a circular ring shape sheet shape, and the bottom surface of the rubber sheet is superposed with the upper surface of the fixed ring block 64. The upper end of the fixed rod 63 sequentially penetrates through the inner top surface of the tank body 1, the outer wall of the tank body 1, the fixed ring block 64 and the fixed cover 65, the fixed rod 63, the tank body 1 and the fixed ring block 64 are in sliding fit and are movably sealed, and in addition, the fixed rod 63 is rotatably connected with the fixed cover 65. When the floating plate 3 moves up and down, the piston block 62 slides in the piston cylinder 61, so that the sliding direction of the floating plate 3 is vertical, and when the fixing cover 65 rotates, the fixing cover 65 has vertical displacement relative to the fixing ring block 64 and the tank body 1, so that the fixing rod 63 is driven to move up and down, the height of the fixing rod 63 and the piston block 62 is adjusted, and the lifting stroke of the floating plate 3 is convenient to adjust.
Referring to fig. 1, the pneumatic assembly 7 includes a first vacuum pump 71, an exhaust tube 72, a first solenoid valve 73, and a Y-tube 74. The first vacuum pump 71 is arranged at the top of the tank body 1 and is positioned at one end of the tank body 1 far away from the auxiliary tank 2, and the first vacuum pump 71 is fixed with the outer wall of the tank body 1. The exhaust pipe 72 is a stainless steel pipe and is in an inverted U shape, two ends of the exhaust pipe 72 are respectively fixed with the outer wall of the tank body 1 and are communicated with the inside of the tank body 1, and a communication port of the exhaust pipe 72 and the tank body 1 is positioned at the lowest side of the stroke of the floating plate 3. The first electromagnetic valve 73 is arranged in the middle of the exhaust pipe 72, is fixedly mounted with the exhaust pipe 72, and is used for opening or closing the exhaust pipe 72, and the negative pressure port of the first vacuum pump 71 is fixed with the outer wall of the middle of the exhaust pipe 72 and is communicated with the interior of the exhaust pipe 72. The Y-pipe 74 is Y-shaped, and has a circular opening cross section, and the Y-pipe 74 includes a first ventilation end communicating with the positive pressure port of the first vacuum pump 71, a second ventilation end communicating with the negative high pressure chamber in the sub-tank 2, and a third ventilation end communicating with the outside air. A third solenoid valve 741 and a fourth solenoid valve 742 are disposed on the Y-shaped tube 74, the third solenoid valve 741 is fixedly mounted on the third vent end, and the fourth solenoid valve 742 is fixedly mounted on the second vent end. When the metal electrolysis waste liquid enters the evaporating chamber, the fourth electromagnetic valve 742 is closed, the third electromagnetic valve 741 is opened, the first vacuum pump 71 is started, air in the evaporating chamber is extracted to the outside, so that the evaporating chamber is in a negative low-pressure environment, when the evaporation cycle of the waste liquid steam starts, the fourth electromagnetic valve 742 is opened, the third electromagnetic valve 741 is closed, the first vacuum pump 71 is opened at the moment, the air and the waste liquid steam in the extracting evaporating chamber enter a negative high-pressure chamber, and the leakage of the waste liquid steam is prevented.
Referring to fig. 1, the pumping module 8 includes a second vacuum pump 81, a connection tank 82, a mounting pipe 83, a communication pipe 84, and a second solenoid valve 85. The second vacuum pump 81 is fixedly installed on the outer side wall of the auxiliary tank 2 far away from the tank body 1 and communicated with the inside of the negative high-pressure chamber of the auxiliary tank 2, and is used for extracting air in the negative high-pressure chamber, so that a negative high-pressure environment is formed in the negative high-pressure chamber. The connecting tank 82 is a hollow structure in the cylinder, the axis of the connecting tank is horizontal and vertical to the axis of the tank body 1, and the connecting tank 82 is arranged on the upper side of the tank body 1 and is positioned at one end of the tank body 1 close to the auxiliary tank 2. The installation pipe 83 is the stainless steel pipe, its vertical setting and a connecting tank 82 downside, installation pipe 83 upper end with a connecting tank 82 bottom outer wall fixed and with the inside intercommunication of a connecting tank 82, and installation pipe 83 lower extreme and jar body 1 top outer wall fixed and with jar body 1 inside intercommunication, second solenoid valve 85 fixed mounting is on the installation pipe 83 for open or close installation pipe 83. The communicating pipe 84 is a stainless steel circular pipe, one end of which is fixed to the outer wall of the middle part of the connecting tank 82 and is communicated with the inside of the connecting tank 82, and the other end of which is fixed to the upper surface of the sub-tank 2 and is communicated with the negative high-pressure chamber in the sub-tank 2. A drain valve 21 is fixed on the outer side wall of the auxiliary tank 2 close to the second vacuum pump 81, the drain valve 21 is an electromagnetic valve, and the drain valve 21 is arranged at the bottom of the auxiliary tank 2 and is used for discharging waste liquid formed by condensation in the negative high-pressure chamber in the auxiliary tank 2. When the second vacuum pump 81 is started, the negative high-pressure chamber in the auxiliary tank 2 is in a negative high-pressure environment, then the second electromagnetic valve 85 is opened, the negative high-pressure chamber, the transfer chamber and the evaporation chamber are communicated, so that waste liquid steam evaporated in the evaporation chamber passes through the transfer chamber, the installation pipe 83, the connecting tank 82 and the communicating pipe 84 to enter the negative high-pressure chamber in the auxiliary tank 2, then the second electromagnetic valve 85 is closed, the second vacuum pump 81 supplies air into the auxiliary tank 2, then the drain valve 21 is opened, waste liquid in the negative high-pressure chamber is discharged, and solid-liquid separation of electrolytic waste liquid is realized.
Referring to fig. 1 and 2, the instantaneous penetration assembly 9 includes a top plate 91, an air groove 92 and a sliding strip 93, the top plate 91 has a sheet structure with a circular arc cross section, the arc surface with a larger area is attached to the arc surface of the can body 1 and fixed to the can body 1, and the top plate 91 is disposed on the upper side of the initial position of the floating plate 3. The top plate 91 is provided with two, two top plates 91 are respectively arranged on two sides of the floating plate 3, and two ends of the top plate 91 are respectively fixed with the vertical inner side wall of the tank body 1 and the vertical side wall of the filling block 53. The slide-in strip 93 is a strip structure with a triangular cross section, the slide-in strip 93 is arranged on the lower side of the top plate 91, the length direction of the slide-in strip 93 is consistent with that of the top plate 91, the upper surface of the slide-in strip 93 is overlapped and fixed with the edge end face of the lower side of the top plate 91, one side of the slide-in strip 93 is attached and fixed with the arc-shaped inner wall of the tank body 1, and the other side surface of the slide-in strip 93 is respectively connected with the surface of the top plate 91, far away from the arc-shaped inner wall of the tank body 1. The vent groove 92 is opened on the surface of the top plate 91 far away from the arc-shaped inner wall of the tank body 1, the length direction of the vent groove 92 vertically extends along the surface with smaller area of the top plate 91, the cross section of the vent groove 92 is rectangular, and in addition, the cross section area of the vent groove 92 is gradually increased from bottom to top. The top sheet 91 is provided with a plurality of air grooves 92, and the plurality of air grooves 92 are arranged uniformly along the longitudinal direction of the top sheet 91.
The working principle of the embodiment is as follows: when the electrolytic waste liquid is introduced into the tank body 1, the electrolytic waste liquid is located in the evaporation chamber on the lower side of the floating plate 3, at this time, the first vacuum pump 71 is started, the first electromagnetic valve 73 is opened, so that part of air in the evaporation chamber is discharged out of the evaporation chamber through the exhaust pipe 72 and the first vacuum pump 71, so that the evaporation chamber is in a negative low-pressure environment, meanwhile, the low-temperature heating jacket 4 heats the tank body 1, so that the evaporation chamber is in a low-temperature low-pressure environment, so that the electrolytic waste liquid evaporates waste liquid steam, then the second vacuum pump 81 is started, so that the negative high-pressure chamber in the auxiliary tank 2 is in a negative high-pressure environment, then the second electromagnetic valve 85 is opened, the floating plate 3 moves upwards due to the air pressure difference, so that the sealing convex strips are accommodated in the sealing groove 31, along with the upward movement of the floating plate 3, the floating plate 3 gradually slides onto the top sheet 91 through the sliding strips 93 until the two ends, thereby make the interior waste liquid steam of evaporating chamber pass through transfer chamber, installation pipe 83, connecting tank 82 and communicating pipe 84 and get into the negative high-pressure chamber in the auxiliary tank 2, then second solenoid valve 85 closes, and second vacuum pump 81 is toward the interior air that mends of auxiliary tank 2, then drain valve 21 opens, has discharged the indoor waste liquid of negative high-pressure to electrolytic waste liquid's solid-liquid separation has been realized.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A low-temperature evaporation method of metal electrolysis waste liquid is characterized by comprising the following steps: the method comprises the following steps: s1, preparing an evaporation chamber, a transfer chamber and a negative high-pressure chamber, wherein the evaporation chamber, the transfer chamber and the negative high-pressure chamber are sequentially connected; s2, filling the electrolytic waste liquid into the evaporation chamber, heating the electrolytic waste liquid in the evaporation chamber at a low temperature, and then adjusting the air pressure on the upper side of the liquid level of the electrolytic waste liquid in the evaporation chamber to be negative and low pressure so as to evaporate water in the evaporation chamber; s3, pumping air to adjust the air pressure in the negative high-pressure chamber to negative high pressure, and communicating the evaporation chamber, the transfer chamber and the negative high-pressure chamber to lead the waste liquid steam in the evaporation chamber to the negative high-pressure chamber through the transfer chamber; s4, discharging waste liquid steam in the negative high-pressure chamber; and S5, repeating the steps S2-S4 until the waste liquid in the evaporation chamber is evaporated.
2. The utility model provides a low temperature evaporation equipment of metal electrolysis waste liquid which characterized in that: comprises a tank body (1) which is horizontally arranged, an auxiliary tank (2) which is fixed at one end of the tank body (1), a floating plate (3) which is horizontally arranged in the tank body (1) and a low-temperature heating jacket (4) which is fixed at the bottom of the tank body (1); the peripheral edges of the floating plates (3) are respectively connected with the peripheral inner side walls of the tank body (1) in a sealing way; in the tank body (1), the space at the lower side of the floating plate (3) is an evaporation chamber, the space at the upper side of the floating plate (3) is a transfer chamber, and the space in the auxiliary tank (2) is a negative high-pressure chamber; the tank body (1) is also provided with an air pressure assembly (7) for forming a negative low-pressure environment in the evaporation chamber and a pressure pumping assembly (8) for forming a negative high-pressure environment in the negative high-pressure chamber; the air pressure assembly (7) comprises a first vacuum pump (71) fixed on the tank body (1), an air suction pipe (72) arranged on the tank body (1) and communicated with the inner wall of the evaporation chamber, and a first electromagnetic valve (73) fixedly installed on the air suction pipe (72), wherein the first vacuum pump (71) is communicated with the air suction pipe (72); the pressure pumping assembly (8) comprises a second vacuum pump (81) fixedly mounted on the outer side wall of the auxiliary tank (2) and communicated with the inside of the negative high-pressure chamber, a connecting tank (82) arranged at the top of the tank body (1), a mounting pipe (83) arranged at the bottom of the connecting tank (82), a communicating pipe (84) arranged on one side of the connecting tank (82) and a second electromagnetic valve (85) fixedly mounted on the mounting pipe (83), the upper end of the mounting pipe (83) is communicated with the connecting tank (82), and the lower end of the mounting pipe (83) is connected with the tank body (1) and communicated with the transfer chamber; one end of the communicating pipe (84) is communicated with the connecting tank (82), and the other end of the communicating pipe is communicated with the negative high-pressure chamber; and a drain valve (21) communicated with the negative high-pressure chamber is fixedly arranged on the auxiliary tank (2).
3. The apparatus for the low-temperature evaporation of a metal electrolysis waste liquid according to claim 2, wherein: a piston rod (6) connecting the floating plate (3) and the inner top surface of the tank body (1) is further arranged in the tank body (1), and the floating plate (3) is in sliding fit with the inner wall of the tank body (1) and is movably sealed; the inner wall of the tank body (1) is provided with an instant through assembly (9) which is used for communicating the transfer chamber with the evaporation chamber when the floating plate (3) rises.
4. The apparatus for the low-temperature evaporation of metal electrolysis waste liquid according to claim 3, wherein: the section of the tank body (1) is circular, the floating plate (3) is arranged on the upper side of the axis of the tank body (1), and the floating plate (3) is in sliding fit with the inner side walls of the two ends of the tank body (1) and is movably sealed; a sealing groove (31) extending along the edge of the floating plate (3) is formed in the edge end face, close to the arc-shaped inner wall of the tank body (1), of the floating plate (3), and an elastic strip (32) is fixed in the sealing groove (31); still be equipped with in seal groove (31) with seal groove (31) inner wall laminating and the complex sealed lug (33) that slides, sealed lug (33) one side wear out seal groove (31) and with the arc inner wall of the jar body (1) supports tightly, the opposite side be located seal groove (31) and with elasticity strip (32) are fixed.
5. The apparatus for the low-temperature evaporation of metal electrolysis waste liquid according to claim 4, wherein: the instantaneous through component (9) comprises a top plate (91) which is attached to and fixed with the arc-shaped inner wall of the tank body (1), an air vent groove (92) which is formed in the surface, away from the inner wall of the tank body (1), of the top plate (91) and a slide-in strip (93) which is fixed on the end face of the lower edge of the top plate (91) and facilitates the sealing lug (33) to slide on the top plate (91), and the top plate (91) is arranged on the upper side of the floating plate (3); the length direction of the vent groove (92) extends from top to bottom along the surface of the top piece (91).
6. The apparatus for the low-temperature evaporation of metal electrolysis waste liquid according to claim 5, wherein: the cross-sectional area of the vent groove (92) is gradually increased from bottom to top.
7. The apparatus for the low-temperature evaporation of a metal electrolysis waste liquid according to claim 2, wherein: the air pressure assembly (7) further comprises a Y-shaped pipe (74), the Y-shaped pipe (74) comprises a first ventilation end communicated with the first vacuum pump (71), a second ventilation end communicated with a negative high-pressure chamber in the auxiliary tank (2) and a third ventilation end communicated with outside air, a third electromagnetic valve (741) is fixedly mounted on the third ventilation end, and a fourth electromagnetic valve (742) is fixedly mounted on the second ventilation end.
8. The apparatus for the low-temperature evaporation of metal electrolysis waste liquid according to claim 5, wherein: the piston rod (6) comprises a piston cylinder (61) fixed with the upper surface of the floating plate (3), a piston block (62) arranged in the piston cylinder (61) and in sliding fit with the inner wall, a fixing rod (63) vertically arranged in the tank body (1), a fixing ring block (64) fixed on the outer wall of the top of the tank body (1) and a fixing cover (65) sleeved on the fixing ring block (64); the lower end of the fixing rod (63) penetrates into the opening of the piston cylinder (61) and is fixed with the piston block (62), and the upper end of the fixing rod (63) sequentially penetrates through the inner top surface of the tank body (1), the outer wall of the tank body (1), the fixing ring block (64) and the fixing cover (65); the fixed rod (63) is movably sealed with the tank body (1) and the fixed ring block (64), and the fixed rod (63) is rotatably connected with the fixed cover (65); the inner side wall of the fixed cover (65) is in threaded fit with the outer side wall of the fixed ring block (64), and the upper surface of the fixed ring block (64) is attached and fixed with a rubber sheet which is abutted against the inner top surface of the fixed cover (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426327.0A CN111547796A (en) | 2020-05-19 | 2020-05-19 | Low-temperature evaporation method and equipment for metal electrolysis waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426327.0A CN111547796A (en) | 2020-05-19 | 2020-05-19 | Low-temperature evaporation method and equipment for metal electrolysis waste liquid |
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| CN111547796A true CN111547796A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010426327.0A Withdrawn CN111547796A (en) | 2020-05-19 | 2020-05-19 | Low-temperature evaporation method and equipment for metal electrolysis waste liquid |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848463A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Treatment device of low-temperature evaporation high-concentration sewage |
| CN205999047U (en) * | 2016-09-05 | 2017-03-08 | 苏州宝典环保科技有限公司 | A kind of waste water vapo(u)rization system |
| CN106902532A (en) * | 2017-03-27 | 2017-06-30 | 上海泓毅环保科技有限公司 | A kind of low temp liquid evaporator |
| CN209396929U (en) * | 2019-06-27 | 2019-09-17 | 阿克陶科邦锰业制造有限公司 | A kind of Electrolytic Manganese Wastewater low-temperature evaporation equipment |
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2020
- 2020-05-19 CN CN202010426327.0A patent/CN111547796A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103848463A (en) * | 2014-02-28 | 2014-06-11 | 长沙威保特环保科技有限公司 | Treatment device of low-temperature evaporation high-concentration sewage |
| CN205999047U (en) * | 2016-09-05 | 2017-03-08 | 苏州宝典环保科技有限公司 | A kind of waste water vapo(u)rization system |
| CN106902532A (en) * | 2017-03-27 | 2017-06-30 | 上海泓毅环保科技有限公司 | A kind of low temp liquid evaporator |
| CN209396929U (en) * | 2019-06-27 | 2019-09-17 | 阿克陶科邦锰业制造有限公司 | A kind of Electrolytic Manganese Wastewater low-temperature evaporation equipment |
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