Cleaning device based on plating solution in plating bath
Technical Field
The utility model relates to a chemical industry equipment technical field, concretely relates to cleaning device based on plating bath electroplate liquid.
Background
The cyanide-containing waste liquid mainly comes from a cyanide-containing electroplating process and contains cyanide, metal ions and the like; cyanide is a highly toxic substance and can be combined with ferricytochrome enzyme in a human body to lose the function of transferring oxygen, so that people are suffocated and die, and therefore cyanide-containing wastewater needs to be treated before being discharged.
The prior commonly used cyanide-containing wastewater treatment method is acidification treatment, the cyanide content of the treated wastewater exceeds the discharge standard, and in order to achieve the purpose of reaching the standard of the cyanide-containing wastewater, SO needs to be introduced into the acidified wastewater2To destroy cyanide ions in the wastewater, but bubbling SO into the wastewater2Overflow from the waste water in short time to the coming and going, required SO2The amount is large, the environment is polluted, the resources are wasted, and improvement is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reasonable in design's cleaning device based on plating bath to prior art's defect and not enough, through retrieving unreacted SO2The sulfuric acid is prepared into sulfuric acid through catalysis and conversion, and is used for preparing materials for acidification reaction, so that the waste of resources is reduced, the cost is reduced, and the sulfuric acid preparation method has the advantages of simple structure, reasonable design, cost saving and the like.
In order to achieve the above purpose, the utility model adopts the following technical proposal: it comprises an electroplating bath, an acidification tank, a stirring reaction tank and SO2A cylinder and a vacuum pump; the right side wall of the electroplating bath is communicated with the rear side wall of the acidification tank through a first connecting pipe, the right side wall of the acidification tank is communicated with the left side wall of the stirring reaction tank through a third connecting pipe, and the front side of the right side wall of the stirring reaction tank is communicated with SO through a fourth connecting pipe2The left side wall of the cylinder is communicated, the rear side wall of the stirring reaction tank is provided with a vacuum pump, and the rear side of the stirring reaction tank is provided with a catalytic reaction tank;
catalytic reaction pond leading flank communicate through the rear side wall of No. five connecting pipes and stirring reaction pond, the inside suction fan that is equipped with of No. five connecting pipes that inlays, the interior anchor ring in catalytic reaction pond is equipped with heating element, the inside in catalytic reaction pond is equipped with catalysis subassembly, the left side wall in catalytic reaction pond communicates through the right side wall of No. six connecting pipes and conversion reaction pond, the conversion reaction pond communicates through the rear side wall of No. two connecting pipes and acidizing pond, vacuum pump, heating element, stirring subassembly all be connected with external power source.
Furthermore, a stirring assembly is arranged above the stirring reaction tank, and the stirring assembly consists of a stirring rod, a stirring head, frame type fan blades, a fixed frame and a motor; the lower extreme of puddler is equipped with the stirring head, is equipped with frame flabellum on the puddler, and the mount erects at stirring reaction tank top, and the motor passes through the mount and hangs the top of establishing in stirring reaction tank, and the output shaft of motor is connected with the upper end of puddler.
Furthermore, a one-way valve is arranged in the third connecting pipe.
Furthermore, a first high-pressure gas check valve is arranged in the fourth connecting pipe, and a second high-pressure gas check valve is arranged in the fifth connecting pipe.
Further, the catalyst filled in the catalytic assembly is vanadium pentoxide.
After the structure is adopted, the beneficial effects of the utility model are that: a cleaning device based on plating bath electroplate liquid, through recycle unreacted SO2The sulfuric acid is catalyzed and converted to prepare the material sulfuric acid for acidification reaction, so that the purposes of saving energy, protecting environment, reducing cost and improving utilization rate are achieved, and the sulfuric acid has the advantages of simple structure, reasonable design, cost saving and the like.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle catalytic assembly of the present invention.
Fig. 3 is a schematic structural diagram of the middle stirring assembly of the present invention.
Description of reference numerals:
electroplating bath 1, acidification tank 2, stirStirring reaction tank 3, SO2The device comprises a cylinder 4, a vacuum pump 5, a catalytic reaction tank 6, a conversion reaction tank 7, a first connecting pipe 8, a second connecting pipe 9, a third connecting pipe 10, a fourth connecting pipe 11, a fifth connecting pipe 12, a sixth connecting pipe 13, a one-way valve 14, a first high-pressure gas one-way valve 15, a second high-pressure gas one-way valve 16, a heating element 17, a catalytic assembly 18, a stirring assembly 19, a stirring rod 20, a stirring head 21, frame type fan blades 22, a fixing frame 23 and a motor 24.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to fig. 3, the technical solution adopted by the present embodiment is: it comprises an electroplating bath 1, an acidification tank 2, a stirring reaction tank 3 and SO2A cylinder 4 and a vacuum pump 5; the right side wall of the electroplating bath 1 is communicated with the rear side wall of the acidification tank 2 through a first connecting pipe 8, the right side wall of the acidification tank 2 is communicated with the left side wall of the stirring reaction tank 3 through a third connecting pipe 10, a stirring assembly 19 is fixedly arranged above the stirring reaction tank 3 through a fixing frame 23, and the stirring assembly 19 consists of a stirring rod 20, a stirring head 21, frame type fan blades 22, a frame 23 and a motor 24 (model: BLD09-0.75 kw-11); the lower end of the stirring rod 20 is screwed with a stirring head 21, and frame type fan blades 22 are fixedly welded on the stirring rod 20; the fixed frame 23 is erected at the top of the stirring reaction tank 3, the motor 24 is suspended above the stirring reaction tank 3 through the fixed frame 23, and an output shaft of the motor 24 is connected with the upper end of the stirring rod 20; the front side of the right side wall of the stirring reaction tank 3 is connected with SO through a fourth connecting pipe 112The left side wall of the cylinder 4 is communicated, the rear side wall of the stirring reaction tank 3 is provided with a vacuum pump 5, and the rear side of the stirring reaction tank 3 is provided with a catalytic reaction tank 6;
the front side surface of the catalytic reaction tank 6 is communicated with the rear side wall of the stirring reaction tank 3 through a fifth connecting pipe 12, a suction fan (not shown in the drawing) is embedded in the fifth connecting pipe 12, a connecting port of the fifth connecting pipe 12 and the catalytic reaction tank 6 is arranged above the side wall of the catalytic reaction tank 6, a heating element 17 is arranged on the inner annular surface of the catalytic reaction tank 6, the heating element 17 is identical to an oil drum heater (model: HLE-200) in the prior art in structure, a catalytic assembly 18 is arranged in the catalytic reaction tank 6, the catalytic assembly 18 is identical to a fluidized bed reactor (model: HJMTO) in the prior art in structure, the left side wall of the catalytic reaction tank 6 is communicated with the right side wall of the conversion reaction tank 7 through a sixth connecting pipe 13, the conversion reaction tank 7 is communicated with the rear side wall of the acidification tank 2 through a second connecting pipe 9, and the vacuum pump 5, the heating element 17, The stirring assemblies 19 are all connected with an external power supply; a one-way valve 14 is clamped in the third connecting pipe 10; a first high-pressure gas one-way valve 15 is clamped in the fourth connecting pipe 11, and a second high-pressure gas one-way valve 16 is clamped in the fifth connecting pipe 12; the catalyst filled in the catalytic component 18 is vanadium pentoxide.
The working principle of the specific embodiment is as follows: firstly, cyanide-containing waste liquid in the electroplating bath 1 flows into an acidification pool 2 through a first connecting pipe 8 to carry out acidification reaction, sulfuric acid acidifies the cyanide-containing waste liquid, the PH value is reduced, the cyanide concentration can not meet the emission standard at the moment, further reduction is needed, a vacuum pump 5 is opened at the moment, the vacuum pump 5 works to generate negative pressure in a stirring reaction pool 3, and the acidified cyanide-containing waste liquid and SO are subjected to acidification reaction2SO in cylinder 42Are sucked into the stirring reaction tank 3 and are stirred and reacted through the stirring component 19, SO that the reaction is more sufficient, after the reaction is carried out for a period of time and is qualified through detection, the standard wastewater can be discharged, and SO which does not participate in the reaction2Is sucked into the catalytic reaction tank 6 by a suction fan (with a power supply) on the inner wall of the fifth connecting pipe 12, reacts with oxygen in the catalytic reaction tank 6 under the heating action of the heating element 17 and the catalytic action of the catalytic component 18 to generate disulfide trioxide, the generated disulfide trioxide enters the conversion reaction tank 7 through the sixth connecting pipe 13 to react with water in the conversion reaction tank 7, and finally generates sulfuric acid, and the sulfuric acid is injected into the acidification tank 2 through the second connecting pipe 9 and is used for carrying out acidification reaction of cyanogen-containing waste liquid.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. by adopting the structural design of the one-way valve 14, the backflow phenomenon can be avoided, and the cyanogen breaking efficiency is improved;
2. by adopting the structural design of the stirring component 19, the full reaction can be ensured, and the reaction efficiency is improved;
3. adopts the structural design of a catalytic reaction tank 6 and a conversion reaction tank 7 to recycle SO2The cost is reduced, and the energy-saving and environment-friendly effects are achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.