CN212560510U - Automobile parts electricity is thrown and is used waste liquid filtration recovery unit - Google Patents
Automobile parts electricity is thrown and is used waste liquid filtration recovery unit Download PDFInfo
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- CN212560510U CN212560510U CN202021316532.3U CN202021316532U CN212560510U CN 212560510 U CN212560510 U CN 212560510U CN 202021316532 U CN202021316532 U CN 202021316532U CN 212560510 U CN212560510 U CN 212560510U
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Abstract
The utility model discloses an automobile parts electricity is thrown and is used waste liquid filtration recovery unit, including the spent acid purification mechanism who connects the descaling bath, spent acid purification mechanism is connected with resin purification mechanism, and resin purification mechanism is connected with effluent water sump and evaporative concentration mechanism, evaporative concentration mechanism is connected with retrieval and utilization acid storage tank, the utility model discloses throw the spent acid after sour usefulness to the electrolysis and carry out effectual recovery processing, make it can clean and concentrate the purpose that reaches reuse, and the treatment cost is low.
Description
Technical Field
The utility model belongs to sour waste liquid treatment facility field is thrown in electrolysis, more specifically the utility model relates to an automobile parts waste liquid filters recovery unit for electro-polishing.
Background
At present, in the treatment of the pickling waste acid liquor of automobile parts, the spray roasting process is the most advanced regeneration process, and the waste acid liquor can be completely regenerated. In the waste acid regeneration process based on the spray roasting method, the waste acid is subjected to chemical reaction to generate free HF and HNO3, the free HF and the HNO3 are absorbed by an absorption tower to form regenerated acid, and meanwhile, multi-stage washing is carried out before the regenerated acid is discharged to the atmosphere to meet the emission standard.
The spray roasting process can recover more than 90% of hydrofluoric acid, but only about 40-60% of nitric acid can be recovered, most of the nitric acid in the waste acid solution is decomposed into NOx (nitrogen oxide NO2, short for NO) gas which is not easy to absorb under high-temperature roasting, and a large amount of NOx gas can cause expensive denitration treatment cost; meanwhile, the process together with unnecessary free nitric acid, hydrofluoric acid and water is roasted, a large amount of energy is consumed, and great pressure is brought to the day when the energy cost is increasingly high.
SUMMERY OF THE UTILITY MODEL
To the deficiency of the prior art, the utility model provides a waste acid after sour usefulness is thrown in electrolysis carries out effectual recovery processing, makes it can be clean and concentrated the purpose that reaches reuse, and the treatment cost is low.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an automobile parts electricity is thrown and is used waste liquid filtration recovery unit, is including the spent acid purification mechanism who connects the descaling bath, and spent acid purification mechanism is connected with resin purification mechanism, and resin purification mechanism is connected with effluent water sump and evaporative concentration mechanism, evaporative concentration mechanism is connected with retrieval and utilization sour storage tank.
Further spent acid purification mechanism includes membrane separation equipment.
The resin purification mechanism comprises a resin bed, an acid liquid inlet, a backwashing water inlet, an acid liquid outlet and a metal liquid outlet are formed in the resin bed, the acid liquid inlet is connected with the outlet of the waste acid purification mechanism, the metal liquid outlet is connected with a sewage pool, the backwashing water inlet is connected with a water tank, and the acid liquid outlet is connected with an evaporation concentration mechanism.
Further evaporation concentration mechanism includes first evaporation concentration jar, first evaporation concentration jar is connected with first circulation pipeline, and first evaporation concentration jar is all connected at first circulation pipeline's both ends, be provided with first heat exchanger on the first circulation pipeline, steam generator is connected to first heat exchanger, the concentrated solution exit linkage retrieval and utilization sour storage tank of first evaporation concentration jar.
Further evaporation concentration mechanism still includes the second evaporation concentration jar, the second evaporation concentration jar is connected with the second circulation pipeline, and the second evaporation concentration jar is all connected at the both ends of second circulation pipeline, be provided with the second heat exchanger on the second circulation pipeline, be provided with the secondary steam pipe between second heat exchanger and the first evaporation concentration jar, the concentrated solution exit linkage first circulation pipeline of second evaporation concentration jar.
Furthermore, forced circulation pumps are arranged on the first circulation pipeline and the second circulation pipeline.
Further, the first evaporation concentration tank and the second evaporation concentration tank are vacuum reduced pressure concentration tanks.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the membrane separation technology has the functions of separation, purification and concentration, is simple, efficient, energy-saving and environment-friendly, is a key link for keeping the stable operation of the whole system, can effectively remove the pollution of pollutants such as oil stains and suspended impurities, and provides effective guarantee for the normal operation of the system while improving the quality of recycled acid;
2. in the resin purification process, anodic oxidation acid is pumped up through the resin bed, free sulphur is adsorbed by the resin, and the aluminium sulphate solution passes. During desorption, water flows through the resin column, extracting free sulfuric acid from the resin, the device automatically absorbs to desorbs every few minutes, and the final result is an almost continuous acid purification and metal salt removal process;
3. vacuum decompression concentration jar is the process of operating under the negative pressure condition, waste acid liquid ordinary pressure evaporating temperature is higher, corrosivity is very strong, through negative pressure evaporative concentration technique, can make material boiling point greatly reduced, simultaneously, the effective heat transfer difference in temperature between live steam and the secondary steam can improve, the production intensity of evaporimeter can increase, the heating steam of decompression evaporation can use low pressure steam or waste gas as the heat source, the heat loss of system is also little in the operation, the pollution problem of acid mist leakage has been stopped simultaneously, the integration has been made to adoption economic benefits and social benefits concentration technique and negative pressure evaporative technique, through letting in heating steam first heat exchanger, the secondary steam that produces by first evaporative concentration jar is as the heating steam of second evaporative concentration jar.
Drawings
FIG. 1 is a schematic structural view of the waste liquid filtering and recycling device for electro-polishing of automobile parts of the present invention;
FIG. 2 is a schematic view of the structure of the evaporation and concentration mechanism.
Reference numerals: A. a waste acid purification mechanism; B. a resin purification mechanism; C. an evaporation and concentration mechanism; 1. a membrane separation device; 2. a water tank; 3. a resin bed; 4. a sewage tank; 5. a first heat exchanger; 6. a first circulation line; 7. a first evaporation and concentration tank; 8. a second heat exchanger; 9. a second evaporation and concentration tank; 10. a forced circulation pump; 11. a second circulation line; 12. a secondary steam pipe; 13. a pickling tank; 71. an evaporator.
Detailed Description
The embodiment of the waste liquid filtering and recycling device for automobile part electro-polishing of the present invention is further described with reference to fig. 1 and 2.
In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.
The utility model provides an automobile parts electricity is thrown and is used waste liquid filtration recovery unit, is including the spent acid purification mechanism A who connects descaling bath 13, and spent acid purification mechanism A is connected with resin purification mechanism B, and resin purification mechanism B is connected with effluent water sump 4 and evaporation concentration mechanism C, evaporation concentration mechanism C is connected with the sour storage tank of retrieval and utilization.
In this embodiment, the used acid solution is introduced into the waste acid purification mechanism a from the pickling tank 13, the waste acid purification mechanism a filters contaminants such as impurities inside, the resin purification mechanism B retains the acid in the waste acid inside, the metal salt flows out to the sewage tank 4, the acid retained in the resin purification mechanism B is backwashed by water to the evaporation concentration mechanism C, and the evaporation concentration mechanism C evaporates water to increase the acid concentration to a reusable state.
The preferred waste acid purification mechanism A of this embodiment includes membrane separation equipment 1, and membrane separation means that the mixture of different particle diameter molecules is when passing through the pellicle on the molecular level, realizes the technique of selectivity separation, and the pellicle is also known as separation membrane or filter membrane, and the membrane wall is covered with the aperture, and membrane separation technique has the function of separation, purification, concentration, has characteristics such as simple, high efficiency, energy-conservation, environmental protection again, and membrane separation technique can effectually get rid of the pollution of pollutants such as greasy dirt in the waste acid, suspended impurity, provides effective guarantee for the normal operating of system when promoting the quality of retrieval and utilization acid.
The resin purification mechanism B preferably comprises a resin bed 3, an acid liquid inlet, a backwashing water inlet, an acid liquid outlet and a metal liquid outlet are formed in the resin bed 3, the acid liquid inlet is connected with the outlet of the waste acid purification mechanism A, the metal liquid outlet is connected with a sewage pool 4, the backwashing water inlet is connected with a water tank 2, and the acid liquid outlet is connected with an evaporation concentration mechanism C.
As shown in fig. 1, the process is divided into an ascending process and a descending process, in the ascending process, the waste acid passing through the waste acid purification mechanism a firstly flows into the resin bed 3 from the acid liquid inlet, the acid is adsorbed by the resin particles, and the metal salt solution is discharged from the metal liquid outlet at the upper part to the sewage tank 4 to be collected and treated in a centralized manner; during the downward moving process, water is introduced into the resin bed 3 from the water tank 2 through the backwashing water inlet, and the acid in the resin bed 3 is backwashed by the water and flows out through the acid liquor outlet.
The evaporation concentration mechanism C that this embodiment is preferred includes first evaporation concentration jar 7, first evaporation concentration jar 7 is connected with first circulating line 6, and first evaporation concentration jar 7 is all connected at the both ends of first circulating line 6, be provided with first heat exchanger 5 on the first circulating line 6, steam generator is connected to first heat exchanger 5, the concentrated solution exit linkage retrieval and utilization acid storage tank of first evaporation concentration jar 7.
A forced circulation pump 10 is provided in the first circulation line 6.
As shown in fig. 2, a part of the acid solution backwashed in the resin bed 3 is introduced into a first evaporation concentration tank 7, the acid solution in the first evaporation concentration tank 7 is led out through a forced circulation pump 10, passes through a first heat exchanger 5 and then flows back into the first evaporation concentration tank 7, high-temperature steam is introduced into the first heat exchanger 5 through a steam generator, the acid solution is heated at the first heat exchanger 5, the water of the acid solution heated in the first evaporation concentration tank 7 is evaporated, the concentration of the acid solution is gradually increased, the top of the first evaporation concentration tank 7 is an evaporator 71, one end of a first circulation pipeline 6 is connected to the bottom end of the first evaporation concentration tank 7, the other end is connected to the top end of the evaporator 71, the acid solution is heated by the steam when flowing down from the inside of the evaporator 71 in a film shape by gravity, starts to evaporate after reaching a certain temperature, and then flows down to the bottom of the concentration tank to complete one-time, and the concentrated acid liquor flows into a recycling acid storage tank through a concentrated liquor outlet to be stored for recycling.
The evaporation concentration mechanism C preferably in this embodiment further includes a second evaporation concentration tank 9, a part of the acid solution after backwashing in the resin bed 3 is introduced into the first evaporation concentration tank 7, the second evaporation concentration tank 9 is connected to a second circulation pipeline 11, both ends of the second circulation pipeline 11 are connected to the second evaporation concentration tank 9, the second circulation pipeline 11 is provided with a second heat exchanger 8, a secondary steam pipe 12 is provided between the second heat exchanger 8 and the first evaporation concentration tank 7, and a concentrated solution outlet of the second evaporation concentration tank 9 is connected to the first circulation pipeline 6.
As shown in fig. 2, in the present embodiment, two evaporation concentration tanks are used to simultaneously concentrate the acid solution, so that the efficiency is higher, and the heating steam is introduced into the first heat exchanger 5, and the secondary steam generated by the first evaporation concentration tank 7 is used as the heating steam of the second evaporation concentration tank 9, so that the energy is saved and the cost is low while the efficiency is high.
Secondary steam generated by the first evaporation concentration tank 7 passes through the second heat exchanger 8 and is collected by condensation; in the same way, the temperature of the tertiary steam generated in the second evaporation and concentration tank 9 is lower, and the tertiary steam is directly collected through condensation.
The first evaporation concentration tank 7 and the second evaporation concentration tank 9 which are preferred in this embodiment are vacuum reduced-pressure concentration tanks, each vacuum reduced-pressure concentration tank comprises a concentrator, a condenser, a vapor-liquid separator, a cooler and a liquid receiving barrel, the concentrator is of a jacket structure, the condenser is of a tube type, and the cooler is of a coil type structure.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides an automobile parts is waste liquid filtration recovery unit for electro-polishing which characterized in that: including the spent acid purification mechanism who connects the descaling bath, spent acid purification mechanism is connected with resin purification mechanism, and resin purification mechanism is connected with effluent water sump and evaporative concentration mechanism, evaporative concentration mechanism is connected with the retrieval and utilization sour storage tank.
2. The waste liquid filtering and recycling device for automobile part electro-polishing as claimed in claim 1, wherein: the waste acid purification mechanism comprises membrane separation equipment.
3. The waste liquid filtering and recycling device for automobile part electro-polishing as claimed in claim 1, wherein: the resin purification mechanism comprises a resin bed, an acid liquid inlet, a backwashing water inlet, an acid liquid outlet and a metal liquid outlet are formed in the resin bed, the acid liquid inlet is connected with the outlet of the waste acid purification mechanism, the metal liquid outlet is connected with a sewage tank, the backwashing water inlet is connected with a water tank, and the acid liquid outlet is connected with an evaporation concentration mechanism.
4. The waste liquid filtering and recycling device for automobile part electro-polishing as claimed in any one of claims 1 to 3, wherein: the evaporation concentration mechanism comprises a first evaporation concentration tank, the first evaporation concentration tank is connected with a first circulation pipeline, the two ends of the first circulation pipeline are connected with the first evaporation concentration tank, a first heat exchanger is arranged on the first circulation pipeline, the first heat exchanger is connected with a steam generator, and a concentrated solution outlet of the first evaporation concentration tank is connected with a recycling acid storage tank.
5. The automobile parts waste liquid for electric polishing of claim 4 filters recovery unit, characterized in that: the evaporation concentration mechanism further comprises a second evaporation concentration tank, the second evaporation concentration tank is connected with a second circulation pipeline, the two ends of the second circulation pipeline are connected with the second evaporation concentration tank, a second heat exchanger is arranged on the second circulation pipeline, a secondary steam pipe is arranged between the second heat exchanger and the first evaporation concentration tank, and a concentrated solution outlet of the second evaporation concentration tank is connected with the first circulation pipeline.
6. The automobile parts waste liquid for electric polishing of claim 4 filters recovery unit, characterized in that: and the first circulating pipeline and the second circulating pipeline are both provided with forced circulating pumps.
7. The device for filtering and recovering the waste liquid for electro-polishing of the automobile parts as claimed in claim 5, wherein: and the first evaporation concentration tank and the second evaporation concentration tank are vacuum decompression concentration tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021316532.3U CN212560510U (en) | 2020-07-07 | 2020-07-07 | Automobile parts electricity is thrown and is used waste liquid filtration recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021316532.3U CN212560510U (en) | 2020-07-07 | 2020-07-07 | Automobile parts electricity is thrown and is used waste liquid filtration recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212560510U true CN212560510U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021316532.3U Active CN212560510U (en) | 2020-07-07 | 2020-07-07 | Automobile parts electricity is thrown and is used waste liquid filtration recovery unit |
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| CN (1) | CN212560510U (en) |
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2020
- 2020-07-07 CN CN202021316532.3U patent/CN212560510U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20220217 Address after: 310000 6th floor, building 2 (plant 1), No. 38, Sanxing Road, Renhe street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Yongjieda Purification Technology Co.,Ltd. Patentee after: Jiaxing Minhui Auto Parts Co., Ltd Address before: 314006 Asia Pacific Science and Technology Industrial Park, Jiaxing City, Zhejiang Province Patentee before: JIAXING MINHUI AUTOMOTIVE PARTS Co.,Ltd. |