CN113105016A - Oil organic matter removing device and process in zinc extraction process in waste hydrochloric acid - Google Patents
Oil organic matter removing device and process in zinc extraction process in waste hydrochloric acid Download PDFInfo
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- CN113105016A CN113105016A CN202110344247.5A CN202110344247A CN113105016A CN 113105016 A CN113105016 A CN 113105016A CN 202110344247 A CN202110344247 A CN 202110344247A CN 113105016 A CN113105016 A CN 113105016A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/26—Treatment of water, waste water, or sewage by extraction
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a device and a process for removing oil organic matters in a zinc extraction process in waste hydrochloric acid, which comprise an oil removing groove for storing the waste hydrochloric acid, a waste oil collecting groove for collecting the waste oil, an oil scraping mechanism for scraping the waste oil on the upper layer of the waste hydrochloric acid in the oil removing groove to the waste oil collecting groove, a lifting mechanism for driving the oil scraping mechanism to lift, and a waste acid collecting groove for collecting waste acid after oil is removed in the oil removing groove by the oil scraping mechanism. The waste hydrochloric acid in the oil removing groove is scraped into the waste oil collecting groove through the oil scraping mechanism, oil organic matters in the waste acid are removed, favorable conditions are created for rear-section extraction equipment, the extraction treatment capacity is improved, the problem of emulsion entrainment of an extracting agent is solved, and the entrainment loss of the extracting agent is reduced; the oil scraping efficiency of the oil scraping mechanism is high, the oil scraping unit is in a V-shaped structure formed by splicing the oil scraping plates when oil scraping is conducted, the oil scraping amount is improved, automatic separation is conducted after oil scraping of the oil scraping plates, and oil stain on the oil scraping plates is scraped into a waste oil collecting groove by the oil scraping plate cleaning mechanism, so that the oil scraping amount is further increased.
Description
Technical Field
The invention relates to the technical field of waste hydrochloric acid treatment, in particular to a device and a process for removing oil organic matters in a zinc extraction process in waste hydrochloric acid.
Background
At present, in the galvanizing industry, the zinc content in the waste hydrochloric acid is high, so that the iron oxide red blanking pipeline of an acid regeneration workshop is frequently blocked, and therefore, the applicant company carries out extraction equipment construction of the zinc content in the waste hydrochloric acid. However, the oil and fat organic matters in the waste acid are high in content, and the emulsification is serious during zinc extraction, so that the extraction agent is carried in the extracted hydrochloric acid more, and the loss of the extraction agent is about 2%. The extracted hydrochloric acid is milky in appearance, and causes serious adverse effect on the production of acid regeneration equipment. Secondly, the treatment capacity of extraction equipment is seriously reduced due to emulsification in the extraction process, the applicant company designs the treatment capacity of waste acid to be 10 square/d, and only about 3-4 square/d is needed at present, so that adverse effects are brought to the treatment of the overproof acid of the company. Therefore, it is necessary to improve the pretreatment of the zinc extraction process in the waste hydrochloric acid to remove the oil organic matters in the waste acid, so as to overcome the existing defects.
Disclosure of Invention
In order to solve the problems, remove oil organic matters in waste acid, create favorable conditions for back-end extraction equipment, improve the extraction treatment capacity and reduce the entrainment loss of an extracting agent, the technical scheme adopted by the invention is as follows:
an oil organic matter removing device for a zinc extraction process in waste hydrochloric acid comprises:
the lower end of the oil removing groove is fixed through a support and used for storing waste hydrochloric acid;
the waste oil collecting tank is arranged on one side of the oil removing tank and is used for collecting waste oil;
the oil scraping mechanism is used for scraping the waste oil on the upper layer of the waste hydrochloric acid in the oil removing groove to the waste oil collecting groove; the oil scraping mechanism comprises a rack which is arranged right above the oil removing tank and can be in clearance fit with the inner wall of the oil removing tank, a first rotating shaft, a second rotating shaft, a third rotating shaft and a speed reducing motor are arranged on the rack, the second rotating shaft is positioned between the first rotating shaft and the third rotating shaft, the third rotating shaft is positioned obliquely above the second rotating shaft, the third rotating shaft is connected with the output end of the speed reducing motor, chain wheels are arranged on two sides of the first rotating shaft, the second rotating shaft and the third rotating shaft and positioned on the inner side of the rack, the chain wheels on the same side are connected through transmission chains with accessories, and a plurality of oil scraping units are arranged between the two transmission chains; the oil scraping unit comprises a mounting frame arranged on accessories of two transmission chains, two symmetrically arranged oil scraping plates are hinged on the end face of the mounting frame, which is back to the transmission chains, a connecting rod is hinged on the oil scraping plates, the other end of the connecting rod is hinged with a sliding rod, a limiting sliding sleeve is fixed on the mounting frame, the sliding rod penetrates through the limiting sliding sleeve to be in sliding connection with the limiting sliding sleeve, a mounting plate is fixed at the other end of the sliding rod, universal balls are arranged on the mounting plate, a pressure spring is sleeved on the sliding rod and positioned between the mounting plate and the limiting sliding sleeve, and the pressure spring is used for providing elasticity for; a guide plate in rolling fit with the universal ball is fixed at the lower part of the rack, the guide plate comprises an inclined leading-in section positioned on one side of the first rotating shaft, an inclined oil outlet section positioned between the second rotating shaft and the third rotating shaft and a horizontal oil pushing section positioned between the second rotating shaft and the third rotating shaft, and two oil scraping plates of the same oil scraping unit are in a V-shaped splicing structure between the horizontal oil pushing section and the inclined oil outlet section; an oil guide plate is fixed at the lower end of the inclined oil outlet section in a sealing mode, the oil guide plate comprises a first end face arranged obliquely upwards and a second end face arranged obliquely downwards and connected with the oblique upper end of the first end face, a reference surface where a second rotating shaft and a third rotating shaft are located together is parallel to the first end face, the first end face is matched with the oil scraping plate in a sliding and sealing mode, the oblique lower end of the first end face is flush with the lower end of the oil scraping plate of the horizontal oil pushing section, and the oblique lower end of the second end face extends to the position above the waste oil collecting tank; an oil scraping plate cleaning mechanism is arranged on the rack and right above the waste oil collecting tank, and oil stains on the oil scraping plate after oil scraping are scraped into the waste oil collecting tank by the oil scraping plate cleaning mechanism;
the lifting mechanism is arranged on the bracket and used for driving the oil scraping mechanism to lift so as to adjust the height of the oil scraping plate relative to the liquid level of the waste acid or the depth of the oil scraping plate immersed in the waste acid;
and the waste acid collecting tank is arranged on the other side of the oil removing tank and is used for collecting waste acid which is removed oil in the oil removing tank through the oil scraping mechanism.
Further, the clean mechanism of frizing board includes two clean scraper blades, and clean scraper blade comes to one side be equipped with the frizing board contact cooperation in order to scrape the frizing breach of its surface oil stain towards the frizing board, and clean scraper blade passes through the mount to be fixed on frame upper portion, connects through the stiffener between two clean scraper blades.
Further, the oil removing groove lower extreme is equipped with the acid discharge pipe, and on the acid discharge pipe other end extended to the spent acid collecting vat, the last valve of installing of acid discharge pipe.
Further, install motor support frame on the spent acid collecting vat, install agitator motor on the motor support frame, the (mixing) shaft is installed to the agitator motor output, installs the stirring leaf on the (mixing) shaft.
Further, elevating system is including fixing on the support and being located the pneumatic cylinder that removes the oil groove both sides, and the pneumatic cylinder quantity of homonymy is two at least, is fixed with the extension board that corresponds with the pneumatic cylinder in the frame, and the flexible end of pneumatic cylinder is with extension board fixed connection.
Furthermore, the oil scraping plates are matched with each other to form a V-shaped structure, and corrosion-resistant sealing rubber strips are arranged at the splicing ends of the oil scraping plates.
The invention also provides a process for removing oil organic matters in the zinc extraction process in the waste hydrochloric acid, which comprises the following steps:
waste hydrochloric acid is poured into an oil removing groove, and waste oil on the surface of the waste hydrochloric acid is scraped into a waste oil collecting groove through an oil scraping mechanism;
after the oil scraping mechanism removes oil, a valve at the bottom of the oil removing tank is opened, so that waste oil flows into a waste acid collecting tank;
in the waste acid collecting tank, according to the waste hydrochloric acid: activated carbon powder = 25-35: 1, adding activated carbon powder, and stirring and reacting for 25-35 min;
after the reaction is fully performed, in a waste acid collecting tank, according to the ratio of waste hydrochloric acid: slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide = 35-40: 1, and stirring for reacting for 35-45 min;
after the stirring reaction is full, sludge is pressed and filtered by a plate-and-frame filter press, and the waste hydrochloric acid after the filter pressing enters a lower-stage extraction section.
Further, the waste acid collecting tank is internally provided with the following components in percentage by weight: activated carbon powder = 30: adding activated carbon powder according to the proportion of 1, and stirring and reacting for 30 min.
Further, the waste acid collecting tank is internally provided with the following components in percentage by weight: and (3) slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide =37.5:1, and stirring for reacting for 40 min.
Furthermore, waste oil in the waste oil collecting tank is pumped to an empty ton barrel through an oil pump, enters a waste oil treatment workshop to be treated, and sludge is treated by a secondary zinc oxide workshop.
The invention has the beneficial effects that:
1. the waste hydrochloric acid in the oil removing groove is scraped into the waste oil collecting groove through the oil scraping mechanism, oil organic matters in the waste acid are removed, favorable conditions are created for rear-section extraction equipment, the extraction treatment capacity is improved, and the entrainment loss of an extracting agent is reduced;
2. the oil scraping mechanism is high in oil scraping efficiency, the oil scraping units can improve the oil scraping amount relative to a flat plate type oil scraping plate by splicing the oil scraping plates into a V-shaped structure during oil scraping, the oil scraping plates are automatically separated after oil scraping, and the oil scraping plate cleaning mechanism scrapes oil stains on the oil scraping plates into a waste oil collecting tank, so that the oil removing effect is improved, the oil scraping amount is further increased, and meanwhile, the pollution of equipment caused by the dropping of the oil stains on the oil scraping plates is avoided;
3. through the improvement of the treatment of the former stage process, the treatment capacity of the waste hydrochloric acid containing zinc in the prior art reaches about 9 square/d, the design capacity requirement is basically met, the appearance of the waste hydrochloric acid after extraction is clear and green, the zinc content in the waste acid can be controlled below 1000mg/L, the loss of an extractant is about 1 percent, the appearance quality of the waste hydrochloric acid after extraction is greatly improved, the extraction treatment capacity is greatly improved, no obvious emulsification phenomenon exists, the loss of the extractant is reduced by about 50 percent, the emulsification entrainment phenomenon of the extractant is thoroughly solved, the treatment cost is greatly reduced, and the effect is obvious.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a partial top view of the scraper mechanism during oil scraping;
fig. 5 is a bottom view of the squeegee unit;
FIG. 6 is a top view of the blade cleaning mechanism;
FIG. 7 is a partial side view at the blade cleaning mechanism of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 1 at A;
in the figure, 1, oil removing groove; 2. a support; 3. a waste oil collecting tank; 4. a frame; 5. a first rotating shaft; 6. a second rotating shaft; 7. a third rotating shaft; 8. a reduction motor; 9. a sprocket; 10. a drive chain; 11. a mounting frame; 12. a scraper plate; 13. a connecting rod; 14. a slide bar; 15. a limiting sliding sleeve; 16. mounting a plate; 17. a ball transfer unit; 18. a pressure spring; 19. a guide plate; 20. an inclined lead-in section; 21. an inclined oil outlet section; 22. a horizontal oil pushing section; 23. an oil guide plate; 24. a first end face; 25. a second end face; 26. a waste acid collecting tank; 27. a cleaning blade; 28. an oil scraping notch; 29. a fixed mount; 30. a reinforcing bar; 31. an acid discharge pipe; 32. a valve; 33. a motor support frame; 34. a stirring motor; 35. a stirring shaft; 36. stirring blades; 37. a hydraulic cylinder; 38. an extension plate; 39. a corrosion-resistant sealing rubber strip.
Detailed Description
The invention is described in detail below with reference to the attached drawing
Example 1
As shown in fig. 1-8: an oil organic matter removing device for a zinc extraction process in waste hydrochloric acid comprises:
the lower end of the oil removing groove 1 is fixed through a support 2 and used for storing waste hydrochloric acid;
a waste oil collecting tank 3 which is arranged at one side of the oil removing tank 1 and is used for collecting waste oil;
the oil scraping mechanism is used for scraping the waste oil on the upper layer of the waste hydrochloric acid in the oil removing groove 1 to the waste oil collecting groove 3; the oil scraping mechanism comprises a rack 4 which is arranged right above the oil removing groove 1 and can be in clearance fit with the inner wall of the oil removing groove 1, a small clearance is reserved between the rack 4 and the oil removing groove 1 so as to be convenient for sufficiently scraping oil, waste oil is prevented from accumulating at the clearance between the rack 4 and the oil removing groove 1 and cannot be scraped out, and meanwhile, the oil scraping mechanism can freely lift at the inner side of the oil removing groove 1; a first rotating shaft 5, a second rotating shaft 6, a third rotating shaft 7 and a speed reducing motor 8 are mounted on the rack 4, the second rotating shaft 6 is positioned between the first rotating shaft 5 and the third rotating shaft 7, the third rotating shaft 7 is positioned above the second rotating shaft 6 in an inclined manner, the third rotating shaft 7 is connected with the output end of the speed reducing motor 8, chain wheels 9 are mounted on two sides of the first rotating shaft 5, the second rotating shaft 6 and the third rotating shaft 7 and positioned on the inner side of the rack 4, the chain wheels 9 on the same side are connected through transmission chains 10 with accessories, and a plurality of oil scraping units are mounted between the two transmission chains 10; the oil scraping unit comprises a mounting frame 11 mounted on accessories of two transmission chains 10, the length direction of the mounting frame 11 is perpendicular to the advancing direction of the mounting frame 11, two symmetrically-arranged oil scraping plates 12 are hinged to the end face, back to the transmission chains 10, of the mounting frame 11, a pivot is fixed to the lower end of the mounting frame 11, the oil scraping plates 12 are rotatably connected with the pivot so as to be hinged to the mounting frame 11, a connecting rod 13 is hinged to the oil scraping plates 12, a sliding rod 14 is hinged to the other end of the connecting rod 13, a limiting sliding sleeve 15 is fixed to the mounting frame 11, the sliding rod 14 penetrates through the limiting sliding sleeve 15 to be in sliding connection with the limiting sliding sleeve 15, a mounting plate 16 is fixed to the other end of the sliding rod 14, universal balls 17 are mounted on the mounting plate 16, a pressure spring 18 is sleeved on the sliding rod 14 and located between; a guide plate 19 in rolling fit with the universal ball 17 is fixed at the lower part of the frame 4, the guide plate 19 is flush with the end face of the frame 4, the guide plate 19 comprises an inclined leading-in section 20 positioned on one side of the first rotating shaft 5, an inclined oil outlet section 21 positioned between the second rotating shaft 6 and the third rotating shaft 7 and a horizontal oil pushing section 22 positioned between the two sections, and the two oil scraping plates 12 of the same oil scraping unit are in a V-shaped splicing structure between the horizontal oil pushing section 22 and the inclined oil outlet section 21; an oil guide plate 23 is fixed at the lower end of the inclined oil outlet section 21 in a sealing manner, the oil guide plate 23 comprises a first end face 24 arranged obliquely upwards and a second end face 25 connected with the oblique upper end of the first end face 24 and arranged obliquely downwards, a reference plane where the second rotating shaft 6 and the third rotating shaft 7 are jointly located is parallel to the first end face 24, the first end face 24 is in sliding sealing fit with the oil scraping plate 12, the oblique lower end of the first end face 24 is flush with the lower end of the oil scraping plate 12 of the horizontal oil pushing section 22, waste acid can be prevented from being scraped into the oil guide plate 23 by the oil scraping plate 12, and the oblique lower end of the second end face 25 extends to the upper part of the waste oil collecting tank 3; an oil scraping plate cleaning mechanism is arranged on the frame 4 and right above the waste oil collecting tank 3, and scrapes oil stains on the scraped oil scraping plate 12 into the waste oil collecting tank 3;
the lifting mechanism is arranged on the bracket 2 and used for driving the oil scraping mechanism to lift so as to adjust the height of the oil scraping plate 12 relative to the liquid level of waste acid or the depth of the oil scraping plate immersed in the waste acid;
and the waste acid collecting tank 26 is arranged on the other side of the oil removing tank 1 and is used for collecting waste acid which is removed by the oil scraping mechanism in the oil removing tank 1.
Further, the cleaning mechanism of the oil scraping plate comprises two cleaning scraping plates 27, one side of the cleaning scraping plate 27, which faces the oil scraping plate 12, is provided with an oil scraping notch 28 which is in contact fit with the oil scraping plate 12 to scrape off oil stains on the surface of the oil scraping plate, the cleaning scraping plates 27 are fixed on the upper portion of the frame 4 through a fixing frame 29, and the two cleaning scraping plates 27 are connected through a reinforcing rod 30, so that the cleaning scraping plates 27 can be fixed more firmly.
Further, the lower end of the oil removing groove 1 is provided with an acid discharge pipe 31, the other end of the acid discharge pipe 31 extends to the waste acid collecting groove 26, and a valve 32 is installed on the acid discharge pipe 31.
Further, install motor support frame 33 on the spent acid collecting vat 26, install agitator motor 34 on the motor support frame 33, agitator motor 34 output end installs (mixing) shaft 35, installs stirring leaf 36 on the (mixing) shaft 35. The stirring shaft 35 and the stirring blades 36 are driven to rotate by the stirring motor 34, and the waste acid collecting tank 26 is stirred, so that the waste acid is fully reacted with the activated carbon and hydrogen peroxide.
Further, elevating system is including fixing on support 2 and being located the pneumatic cylinder 37 that removes oil groove 1 both sides, and the pneumatic cylinder 37 quantity of homonymy is two at least, is fixed with the extension board 38 that corresponds with pneumatic cylinder 37 on the frame 4, and the flexible end of pneumatic cylinder 37 and extension board 38 fixed connection.
Further, the oil scraping plates 12 are fitted to form a V-shaped structure with the joint ends fitted with corrosion-resistant sealant strips 39. Through setting up corrosion-resistant joint strip 39, can make the concatenation of frizing 12 when constituting the V-arrangement structure, avoid waste oil to reveal from its concatenation clearance.
The invention also provides a process for removing oil organic matters in the zinc extraction process in the waste hydrochloric acid, which comprises the following steps:
1, pouring waste hydrochloric acid into an oil removing groove 1, and scraping waste oil on the surface of the waste hydrochloric acid into a waste oil collecting groove 3 through an oil scraping mechanism;
2, after the oil scraping mechanism removes oil, a valve 32 at the bottom of the oil removing groove 1 is opened, so that the waste oil flows into the waste acid collecting groove 26;
3 in the waste acid collection tank 26 as waste hydrochloric acid: activated carbon powder = 30: 1, adding activated carbon powder, and stirring for reaction for 30 min; the added active carbon powder can adsorb macromolecular organic matters in the waste acid and reduce the oxygen consumption of the organic matters, thereby reducing COD.
4, reacting fully, and then in a waste acid collecting tank 26, according to the ratio of waste hydrochloric acid: adding hydrogen peroxide slowly at the ratio of hydrogen peroxide =37.5:1, and stirring for reacting for 40 min; and removing COD in the waste hydrochloric acid by adding hydrogen peroxide.
And 5, after stirring and reacting fully, filtering out sludge by a plate-and-frame filter press, and feeding the filtered waste hydrochloric acid into a lower-stage extraction section.
Wherein, waste oil in the waste oil collecting vat 3 will be taken out to empty ton bucket through the oil-well pump in, get into the waste oil and handle the workshop, mud is handed over and is handled by the zinc hypoxide workshop.
To sum up, when the oil organic matter removing device in the zinc extraction process in the waste hydrochloric acid is used, the following steps are specifically performed: waste hydrochloric acid is poured into the oil removing groove 1, the speed reducing motor 8 is started, the speed reducing motor 8 drives the third rotating shaft 7 to rotate, the chain wheel 9 drives the transmission chain 10, the first rotating shaft 5 and the second rotating shaft 6 to rotate, the transmission chain 10 drives each oil scraping unit to circularly move along the triangular structure of the frame 4, when the oil scraping unit moves to the inclined lead-in section 20 of the guide plate 19, the universal ball 17 contacts the inclined lead-in section 20 and is pressed to gradually move towards the inner side of the oil removing groove 1, under the guiding action of the limiting sliding sleeve 15, the sliding rod 14 stably pushes the connecting rod 13 to move, the connecting rod 13 drives the oil scraping plate 12 to rotate, the pressure spring 18 compresses, the spliced ends of the two scrapers of the oil scraping unit are close, when the universal ball 17 moves to the joint of the inclined lead-in section 20 and the horizontal oil pushing section 22, the oil scraping plate 12 forms a V-shaped splicing structure and is sealed and attached through a corrosion-resistant sealing rubber strip 39; the oil scraping plate 12 forming the V-shaped splicing structure pushes the waste oil on the upper layer in the oil removing groove 1 to the inclined oil outlet section 21 and the first end surface 24 in the horizontal oil pushing section 22, moves obliquely and upwards at the second rotating shaft 6, is attached to the first end surface 24 to form a V-shaped oil pushing space to push the waste oil to the second end surface 25, and the waste oil is obliquely dropped into the waste oil collecting groove 3 on the second end surface 25 under the action of gravity; then the universal ball 17 is separated from the inclined oil outlet section 21, under the action of the elastic restoring force of the pressure spring 18, the pressure spring 18 pushes the mounting plate 16 to move outwards, and further drives the oil scraping plates 12 to reset, so that the length directions of the two oil scraping plates 12 are consistent with the advancing directions of the two oil scraping plates, namely the two oil scraping plates 12 are parallel, then the oil scraping plates 12 move to the cleaning scraping plates 27, the oil scraping gaps 28 are contacted with the oil scraping plates 12 through the oil scraping gaps 28, oil stains on the oil scraping plates 12 after oil scraping are scraped into the waste oil collecting tank 3, the waste oil removing efficiency is improved, the circulation is carried out in the above way until the liquid level of the waste oil is lower than that of the oil scraping plates 12, and the oil scraping plates 12; the height of the oil scraping mechanism can be adjusted through the lifting mechanism, the oil scraping mechanism is driven to descend by controlling the four hydraulic cylinders 37 to synchronously operate, so that the oil scraping plate 12 at the lowest layer can be immersed in the waste oil at the upper layer of the waste acid, and the operation is carried out until the waste oil in the oil removing groove 1 is basically removed;
and finally, opening a valve 32, discharging waste acid in the oil removing tank 1 into a waste acid collecting tank 26 through an acid discharge pipe 31, adding activated carbon powder in proportion, starting a stirring motor 34 to stir for a preset time, stirring through a stirring blade 36, fully reacting after stirring is completed, adding hydrogen peroxide in proportion into the waste acid collecting tank 26, stirring for a preset time, fully reacting after stirring is completed, sending the stirred liquid to a plate and frame filter press to filter out sludge, and enabling the filtered waste hydrochloric acid to enter a lower-stage extraction section.
Example 2
This embodiment is substantially the same as the embodiment, and differs therefrom in that:
in the waste acid collection tank 26, the ratio of waste hydrochloric acid: activated carbon powder = 28: 1, adding activated carbon powder, stirring and reacting for 28min, and adding the waste hydrochloric acid into a waste acid collecting tank 26 according to the weight ratio of waste hydrochloric acid: and (3) slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide =36:1, and stirring for reacting for 40 min.
Example 3
This embodiment is substantially the same as the embodiment, and differs therefrom in that:
in the waste acid collection tank 26, the ratio of waste hydrochloric acid: activated carbon powder = 32: 1, adding activated carbon powder, stirring and reacting for 32min, and adding the waste hydrochloric acid into a waste acid collecting tank 26 according to the weight ratio of waste hydrochloric acid: and (3) slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide =39:1, and stirring for reacting for 42 min.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (10)
1. An oil organic matter removing device for a zinc extraction process in waste hydrochloric acid is characterized by comprising the following components:
the lower end of the oil removing groove (1) is fixed through a bracket (2) and is used for storing waste hydrochloric acid;
the waste oil collecting tank (3) is arranged on one side of the oil removing tank (1) and is used for collecting waste oil;
the oil scraping mechanism is used for scraping the waste oil on the upper layer of the waste hydrochloric acid in the oil removing groove (1) to the waste oil collecting groove (3); the oil scraping mechanism comprises a rack (4) which is arranged right above the oil removing tank (1) and can be in clearance fit with the inner wall of the oil removing tank (1), a first rotating shaft (5), a second rotating shaft (6), a third rotating shaft (7) and a speed reducing motor (8) are arranged on the rack (4), the second rotating shaft (6) is positioned between the first rotating shaft (5) and the third rotating shaft (7), the third rotating shaft (7) is positioned above the second rotating shaft (6) in an inclined manner, the third rotating shaft (7) is connected with the output end of the speed reducing motor (8), chain wheels (9) are arranged on two sides of the first rotating shaft (5), the second rotating shaft (6) and the third rotating shaft (7) and are positioned on the inner side of the rack (4), the chain wheels (9) on the same side are connected through transmission chains (10) with accessories, and a plurality of oil scraping units are arranged between the two transmission chains (10); the oil scraping unit comprises a mounting frame (11) arranged on accessories of two transmission chains (10), two symmetrically-arranged oil scraping plates (12) are hinged to the end face, back to the transmission chains (10), of the mounting frame (11), a connecting rod (13) is hinged to the oil scraping plates (12), a sliding rod (14) is hinged to the other end of the connecting rod (13), a limiting sliding sleeve (15) is fixed on the mounting frame (11), the sliding rod (14) penetrates through the limiting sliding sleeve (15) to be in sliding connection with the limiting sliding sleeve, a mounting plate (16) is fixed to the other end of the sliding rod (14), a universal ball (17) is mounted on the mounting plate (16), a pressure spring (18) is sleeved on the sliding rod (14) and located between the mounting plate (16) and the limiting sliding sleeve (15), and the pressure spring (18) is used for providing elasticity for keeping the length; a guide plate (19) in rolling fit with a universal ball (17) is fixed at the lower part of the rack (4), the guide plate (19) comprises an inclined leading-in section (20) positioned on one side of the first rotating shaft (5), an inclined oil outlet section (21) positioned between the second rotating shaft (6) and the third rotating shaft (7) and a horizontal oil pushing section (22) positioned between the inclined oil outlet section and the inclined oil inlet section, and two oil scraping plates (12) of the same oil scraping unit are in a V-shaped splicing structure between the horizontal oil pushing section (22) and the inclined oil outlet section (21); an oil guide plate (23) is fixed at the lower end of the inclined oil outlet section (21) in a sealing mode, the oil guide plate (23) comprises a first end face (24) which is arranged obliquely upwards and a second end face (25) which is connected with the oblique upper end of the first end face (24) and arranged obliquely downwards, a reference surface where the second rotating shaft (6) and the third rotating shaft (7) are located together is parallel to the first end face (24), the first end face (24) is matched with the oil scraping plate (12) in a sliding and sealing mode, the oblique lower end of the first end face (24) is flush with the lower end of the oil scraping plate (12) of the horizontal oil pushing section (22), and the oblique lower end of the second end face (25) extends to the position above the waste oil collecting tank (3); an oil scraping plate cleaning mechanism is arranged on the rack (4) and right above the waste oil collecting tank (3), and oil stains on the oil scraping plate (12) after oil scraping are scraped into the waste oil collecting tank (3) by the oil scraping plate cleaning mechanism;
the lifting mechanism is arranged on the bracket (2) and used for driving the oil scraping mechanism to lift so as to adjust the height of the oil scraping plate (12) relative to the liquid level of waste acid or the depth of the oil scraping plate immersed in the waste acid;
and the waste acid collecting tank (26) is arranged on the other side of the oil removing tank (1) and is used for collecting waste acid which is removed by the oil scraping mechanism in the oil removing tank (1).
2. The oil organic matter removing device in the zinc extraction process in the waste hydrochloric acid as claimed in claim 1, wherein the scraper cleaning mechanism comprises two cleaning scrapers (27), one side of the cleaning scraper (27) facing the scraper (12) is provided with an oil scraping notch (28) which is in contact fit with the scraper (12) to scrape off oil stains on the surface of the scraper, the cleaning scraper (27) is fixed on the upper part of the frame (4) through a fixing frame (29), and the two cleaning scrapers (27) are connected through a reinforcing rod (30).
3. The oil organic matter removing device in the zinc extraction process in the waste hydrochloric acid as claimed in claim 1, wherein an acid discharge pipe (31) is arranged at the lower end of the oil removing tank (1), the other end of the acid discharge pipe (31) extends to the waste acid collecting tank (26), and a valve (32) is mounted on the acid discharge pipe (31).
4. The oil organic matter removing device in the zinc extraction process in waste hydrochloric acid as claimed in claim 1, wherein a motor support frame (33) is installed on the waste acid collecting tank (26), a stirring motor (34) is installed on the motor support frame (33), a stirring shaft (35) is installed at the output end of the stirring motor (34), and stirring blades (36) are installed on the stirring shaft (35).
5. The oil organic matter removing device in the zinc extraction process in the waste hydrochloric acid as claimed in claim 1, wherein the lifting mechanism comprises hydraulic cylinders (37) fixed on the bracket (2) and located at two sides of the oil removing tank (1), the number of the hydraulic cylinders (37) at the same side is at least two, an extension plate (38) corresponding to the hydraulic cylinders (37) is fixed on the frame (4), and the telescopic ends of the hydraulic cylinders (37) are fixedly connected with the extension plate (38).
6. The oil organic matter removing device in the zinc extraction process in the waste hydrochloric acid as claimed in claim 1, wherein the oil scraping plates (12) are matched to splice the spliced ends forming the V-shaped structure, and corrosion-resistant sealing rubber strips (39) are arranged at the spliced ends.
7. The oil organic matter removing process in the zinc extraction process in waste hydrochloric acid is characterized by comprising the following steps of:
pouring the waste hydrochloric acid into an oil removing groove (1), and scraping the waste oil on the surface of the waste hydrochloric acid into a waste oil collecting tank (3) through an oil scraping mechanism;
after the oil scraping mechanism removes oil, a valve (32) at the bottom of the oil removing groove (1) is opened, so that waste oil flows into a waste acid collecting groove (26);
in a waste acid collecting tank (26) according to the ratio of waste hydrochloric acid: activated carbon powder = 25-35: 1, adding activated carbon powder, and stirring and reacting for 25-35 min;
after the reaction is fully performed, the reaction solution is mixed in a waste acid collecting tank (26) according to the ratio of waste hydrochloric acid: slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide = 35-40: 1, and stirring for reacting for 35-45 min;
after the stirring reaction is full, sludge is pressed and filtered by a plate-and-frame filter press, and the waste hydrochloric acid after the filter pressing enters a lower-stage extraction section.
8. The process for removing oil organics in the zinc extraction process in waste hydrochloric acid as claimed in claim 7, wherein the ratio of waste hydrochloric acid in the waste acid collecting tank (26) is as follows: activated carbon powder = 30: adding activated carbon powder according to the proportion of 1, and stirring and reacting for 30 min.
9. The process for removing oil organics in the zinc extraction process in waste hydrochloric acid as claimed in claim 7, wherein the ratio of waste hydrochloric acid in the waste acid collecting tank (26) is as follows: and (3) slowly adding hydrogen peroxide according to the ratio of hydrogen peroxide =37.5:1, and stirring for reacting for 40 min.
10. The process for removing oil organic matters in the zinc extraction process in the waste hydrochloric acid as claimed in claim 7, wherein the waste oil in the waste oil collecting tank (3) is pumped into an empty ton barrel through an oil pump, and enters a waste oil treatment workshop for treatment, and the sludge is treated by a zinc suboxide workshop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110344247.5A CN113105016B (en) | 2021-03-31 | 2021-03-31 | Oil organic matter removing device and process in zinc extraction process in waste hydrochloric acid |
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| CN202110344247.5A CN113105016B (en) | 2021-03-31 | 2021-03-31 | Oil organic matter removing device and process in zinc extraction process in waste hydrochloric acid |
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| CN113105016A true CN113105016A (en) | 2021-07-13 |
| CN113105016B CN113105016B (en) | 2022-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116639763A (en) * | 2023-07-21 | 2023-08-25 | 河北恒创环保科技有限公司 | Device for removing floating oil on upper layer of waste liquid |
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| CN113105016B (en) | 2022-08-19 |
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