CN108911109B - Oxidation device for iron-containing waste acid - Google Patents
Oxidation device for iron-containing waste acid Download PDFInfo
- Publication number
- CN108911109B CN108911109B CN201811029977.0A CN201811029977A CN108911109B CN 108911109 B CN108911109 B CN 108911109B CN 201811029977 A CN201811029977 A CN 201811029977A CN 108911109 B CN108911109 B CN 108911109B
- Authority
- CN
- China
- Prior art keywords
- liquid
- tube
- branch pipe
- pipe
- flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002253 acid Substances 0.000 title claims abstract description 37
- 239000002699 waste material Substances 0.000 title claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 230000003647 oxidation Effects 0.000 title claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 107
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 13
- 229910001448 ferrous ion Inorganic materials 0.000 abstract description 13
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 abstract description 5
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 abstract description 5
- 229910001447 ferric ion Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an oxidation device of iron-containing waste acid, which comprises a liquid storage tank, a liquid pump, a liquid guide pipe, an air pipe, a flat pipe and a liquid exchange pipe, wherein the liquid exchange pipe comprises a first branch pipe, a second branch pipe, a third branch pipe and a fourth branch pipe, the flat pipes are welded on flat holes of the first branch pipe and the second branch pipe and flat holes of the third branch pipe and flat holes of the fourth branch pipe in parallel, air inlets and air outlets connected with the air pipe are respectively arranged at the top ends of the first branch pipe and the third branch pipe, liquid inlets and liquid outlets connected with the liquid guide pipe are respectively arranged on the side walls of the upper ends of the first branch pipe and the third branch pipe, air and waste acid flow in the liquid exchange pipe in a serpentine manner through four branch pipes of a liquid separation plate, the flat pipe and the liquid exchange pipe, so that ferrous ions and air are fully contacted and oxidized into ferric ions, and the oxidation speed of the ferrous ions is improved without fixing a heat conducting sheet in the flat pipes, the whole structure is simple, an external motor and a stirring paddle are not required, and the oxidation effect is good.
Description
[ field of technology ]
The invention relates to the technical field of waste acid treatment, in particular to the technical field of an oxidation device of iron-containing waste acid.
[ background Art ]
The iron scale on the outer surface of the steel can be removed by acid washing, the waste acid solution after acid washing contains a large amount of ferrous chloride or ferrous sulfate and the like, the steel is directly discharged without treatment to pollute the environment, and the waste acid solution contains a large amount of ferrous ions and is directly thrown away to cause waste. Therefore, it is common to fully oxidize ferrous ions in waste acid solutions as raw materials to produce iron oxides with high added values. However, since ferrous ions and ferric ions exist in the waste acid solution at the same time, if the waste acid solution is directly used for producing iron oxide, the product has a plurality of impurities, so that the waste acid solution needs to be fully oxidized.
[ invention ]
The invention aims to solve the problems in the prior art, and provides an oxidation device for iron-containing waste acid, which can enable gas and waste acid to flow in a serpentine manner in a liquid exchange tube through four branch tubes of a liquid separation plate, a flat tube and the liquid exchange tube, greatly increase the flow paths of the gas and the waste acid, enable ferrous ions and the gas to fully contact and be oxidized into ferric ions, and improve the oxidation speed of the ferrous ions by fixing heat conducting sheets in the flat tube for uniform heat transfer.
In order to achieve the aim, the invention provides an oxidation device for iron-containing waste acid, which comprises a liquid storage tank, a liquid pump, a liquid guide tube, an air tube, a flat tube and a liquid exchange tube, wherein the liquid exchange tube comprises a first branched tube, a second branched tube, a third branched tube and a fourth branched tube, flat holes penetrating through inner holes of the branched tubes are formed in the side walls of the first branched tube, the second branched tube, the third branched tube and the fourth branched tube, liquid separation plates are welded on the inner walls of the flat holes of the branched tubes, the flat tubes are welded on the flat holes of the first branched tube and the second branched tube in parallel, the flat holes of the third branched tube and the flat holes of the fourth branched tube, air inlets and air outlets connected with the air tube are respectively formed in the top ends of the first branched tube and the third branched tube, and liquid inlets and liquid outlets connected with the liquid guide tube are respectively formed in the side walls of the upper ends of the first branched tube and the third branched tube.
Preferably, the other end of the liquid guide pipe connected with the liquid inlet is connected with the liquid pump, and the other end of the liquid guide pipe connected with the liquid outlet is connected with the liquid storage tank.
Preferably, the positions of the first branch pipe and the third branch pipe inner liquid separation plate are at the same height, and the positions of the second branch pipe and the fourth branch pipe inner liquid separation plate are at the same height and lower than the positions of the first branch pipe and the third branch pipe inner liquid separation plate.
Preferably, the side walls of the first branch pipe, the third branch pipe and the second branch pipe and the fourth branch pipe are respectively fixed together through welding, a plurality of through holes are formed in the side walls of the second branch pipe and the fourth branch pipe, and the positions of the through holes are lower than those of the liquid separation plates in the second branch pipe and the fourth branch pipe.
Preferably, the liquid pump is also connected to a liquid storage tank.
Preferably, the liquid storage tank is respectively provided with a liquid filling port and a liquid draining port.
Preferably, the flat tube is internally fixed with a heat conducting fin, the heat conducting fin is wave-shaped, and the wave crest and the wave trough are connected with the flat tube.
Preferably, heating sources are further arranged on the front side and the rear side of the flat tube.
The invention has the beneficial effects that: according to the invention, through the liquid separation plate, the flat pipe and the four branch pipes of the liquid exchange pipe, gas and waste acid flow in a serpentine manner in the liquid exchange pipe, so that the flow paths of the gas and the waste acid are greatly increased, ferrous ions and the gas are fully contacted and oxidized into ferric ions, and the heat conduction sheets are fixed in the flat pipe for uniform heat transfer, so that the oxidation speed of the ferrous ions is improved, the whole structure is simple, an additional motor and a stirring paddle are not required, and the oxidation effect is good.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of an oxidizing apparatus for iron-containing spent acid according to the invention;
FIG. 2 is a top view of a portion of the structure of an oxidizing apparatus for iron-containing spent acid of the invention;
FIG. 3 is a cross-sectional view of a flat tube of an oxidizing apparatus for iron-containing spent acid according to the invention.
In the figure: 1-liquid storage tank, 11-liquid filling port, 12-liquid discharge port, 2-liquid pump, 3-liquid guide tube, 4-air tube, 5-flat tube, 6-liquid exchange tube, 61-first branch tube, 611-air inlet, 612-liquid inlet, 62-second branch tube, 63-third branch tube, 631-air outlet, 632-liquid outlet, 64-fourth branch tube, 7-heat conducting fin and 8-liquid separation plate.
[ detailed description ] of the invention
Referring to fig. 1, 2 and 3, the oxidation device of iron-containing waste acid of the present invention comprises a liquid storage tank 1, a liquid pump 2, a liquid guiding tube 3, an air pipe 4, a flat tube 5 and a liquid exchanging tube 6, wherein the liquid exchanging tube 6 comprises a first sub-tube 61, a second sub-tube 62, a third sub-tube 63 and a fourth sub-tube 64, flat holes penetrating through holes in the side walls of the first sub-tube 61, the second sub-tube 62, the third sub-tube 63 and the fourth sub-tube 64 are respectively arranged on the side walls of the first sub-tube 61, the third sub-tube 63 and the fourth sub-tube 64, liquid separating plates 8 are respectively welded on the inner walls, the flat tube 5 is welded on the flat holes of the first sub-tube 61 and the second sub-tube 62 and the flat holes of the third sub-tube 63 and the fourth sub-tube 64 in parallel, the top ends of the first sub-tube 61 and the third sub-tube 63 are respectively provided with an air inlet 611 and an air outlet 631 connected with the air pipe 4, the upper end side walls of the first sub-tube 61 and the third sub-tube 63 are respectively provided with a liquid inlet 612 and a liquid outlet 631 connected with the liquid guiding tube 3, the other end of the liquid guide tube 3 connected with the liquid inlet 612 is connected with the liquid pump 2, the other end of the liquid guide tube 3 connected with the liquid outlet 632 is connected with the liquid storage tank 1, the positions of the liquid separation plates 8 in the first branch tube 61 and the third branch tube 63 are at the same height, the positions of the liquid separation plates 8 in the second branch tube 62 and the fourth branch tube 64 are at the same height and lower than the positions of the liquid separation plates 8 in the first branch tube 61 and the third branch tube 63, the side walls of the first branch tube 61, the third branch tube 63, the second branch tube 62 and the fourth branch tube 64 are respectively fixed together by welding, a plurality of through holes are arranged on the side walls of the second branch tube 62 and the fourth branch tube 64, the positions of the through holes are lower than the positions of the liquid separation plates 8 in the second branch tube 62 and the fourth branch tube 64, the liquid pump 2 is also connected with the liquid storage tank 1, the liquid storage tank 1 is provided with a liquid filling opening 11 and a liquid discharging opening 12 respectively, the flat tube 5 is internally provided with a heat conducting fin 7, the heat conducting fin 7 is wave-shaped, wave crests and wave troughs are connected with the flat tube 5, and heating sources are arranged on the front side and the rear side of the flat tube 5.
The working process of the invention comprises the following steps:
in the working process of the iron-containing waste acid oxidation device, waste acid solution to be oxidized is firstly added from the liquid adding port 11 of the liquid storage tank 1, waste acid in the liquid storage tank 1 enters the upper section of the first branch pipe 61 of the liquid exchange pipe 6 from the liquid inlet 612 through the liquid pump 2 and the liquid guide pipe 3, descending waste acid is blocked by the liquid separation plate 8 in the first branch pipe 61 so as to be reversed to the right and enters the upper section of the second branch pipe 62 through the flat pipe 5, then the middle section of the second branch pipe 62 is blocked by the liquid separation plate 8 in the second branch pipe 62 so as to be reversed to the left and returns to the middle section of the first branch pipe 61 through the flat pipe 5, the waste acid continuously descends and then enters the lower section of the second branch pipe 62 through the flat pipe 5 to the right, then enters the lower section of the fourth branch pipe 64 from the through hole of the lower section of the second branch pipe 62, and then the waste acid flows to the left through the lower section of the flat pipe 63 through the flat pipe 8 in the fourth branch pipe 64, and then flows to the upper section of the fourth branch pipe 64 from the fourth branch pipe 1 to the upper section of the flat pipe 64 through the flat pipe 3. Air or oxygen enters the liquid exchange tube 6 through the air tube 4 and passes through the air inlet 611, and the air flows in the first branch tube 61, the second branch tube 62, the third branch tube 63 and the fourth branch tube in a serpentine manner to fully oxidize ferrous ions in the waste acid and finally leaves from the air outlet 631. The gas and the waste acid circulate in the liquid exchange tube 6, and the flat tube 5 is heated by the heating source, so that the oxidation speed of ferrous ions is improved. Finally, the waste acid subjected to the cyclic oxidation is discharged from the liquid outlet 12 of the liquid storage tank 1.
According to the invention, through the liquid separation plate, the flat pipe and the four branch pipes of the liquid exchange pipe, gas and waste acid flow in a serpentine manner in the liquid exchange pipe, so that the flow paths of the gas and the waste acid are greatly increased, ferrous ions and the gas are fully contacted and oxidized into ferric ions, and the heat conduction sheets are fixed in the flat pipe for uniform heat transfer, so that the oxidation speed of the ferrous ions is improved, the whole structure is simple, an additional motor and a stirring paddle are not required, and the oxidation effect is good.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (3)
1. An oxidation device of iron-containing waste acid is characterized in that: comprises a liquid storage tank (1), a liquid pump (2), a liquid guide tube (3), an air tube (4), a flat tube (5) and a liquid exchange tube (6), wherein the liquid exchange tube (6) comprises a first branched tube (61), a second branched tube (62), a third branched tube (63) and a fourth branched tube (64), flat holes of through holes in the through tubes are formed in the side walls of the first branched tube (61), the second branched tube (62), the third branched tube (63) and the fourth branched tube (64) respectively, liquid separation plates (8) are welded on the inner walls of the flat holes, the flat tube (5) are welded on the flat holes of the first branched tube (61) and the second branched tube (62) in parallel, the flat holes of the third branched tube (63) and the fourth branched tube (64), air inlets (611) and air outlets (631) connected with the air tube (4) are formed in the top ends of the first branched tube (61) and the third branched tube (63) respectively, liquid inlets (612) are formed in the upper ends of the first branched tube (61) and the third branched tube (63) respectively, liquid inlets (612) are connected with the liquid guide tube (3) and the liquid inlet (632) are connected with the liquid guide tube (3) and the liquid outlet (2) which are connected with the other end (2), the liquid-separating device is characterized in that the positions of the liquid-separating plates (8) in the first branch pipe (61) and the third branch pipe (63) are located at the same height, the positions of the liquid-separating plates (8) in the second branch pipe (62) and the fourth branch pipe (64) are located at the same height and lower than the positions of the liquid-separating plates (8) in the first branch pipe (61) and the third branch pipe (63), the side walls of the first branch pipe (61) and the third branch pipe (63) as well as the side walls of the second branch pipe (62) and the fourth branch pipe (64) are fixed together through welding respectively, a plurality of through holes are formed in the side walls connected with the second branch pipe (62) and the fourth branch pipe (64), the positions of the through holes are lower than the positions of the liquid-separating plates (8) in the second branch pipe (62) and the fourth branch pipe (64), the liquid pump (2) is further connected with the liquid storage tank (1), and liquid inlets (11) and liquid discharge ports (12) are formed in the liquid storage tank (1) respectively.
2. An oxidation apparatus for waste acid containing iron according to claim 1, wherein: the flat tube (5) is internally fixed with a heat conducting sheet (7), and the heat conducting sheet (7) is wavy, and the wave crest and the wave trough are connected with the flat tube (5).
3. An oxidation apparatus for waste acid containing iron according to claim 1, wherein: heating sources are arranged on the front side and the rear side of the flat tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029977.0A CN108911109B (en) | 2018-09-05 | 2018-09-05 | Oxidation device for iron-containing waste acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029977.0A CN108911109B (en) | 2018-09-05 | 2018-09-05 | Oxidation device for iron-containing waste acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108911109A CN108911109A (en) | 2018-11-30 |
| CN108911109B true CN108911109B (en) | 2023-12-22 |
Family
ID=64407559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811029977.0A Active CN108911109B (en) | 2018-09-05 | 2018-09-05 | Oxidation device for iron-containing waste acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108911109B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2911119A1 (en) * | 2007-02-14 | 2008-08-21 | Bruce F. Monzyk | Floc composition containing metal ions |
| CN203999092U (en) * | 2014-06-30 | 2014-12-10 | 天津雷鸣科技有限公司 | Ferrous waste acid Function Solution Handling Device Used |
-
2018
- 2018-09-05 CN CN201811029977.0A patent/CN108911109B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2911119A1 (en) * | 2007-02-14 | 2008-08-21 | Bruce F. Monzyk | Floc composition containing metal ions |
| CN203999092U (en) * | 2014-06-30 | 2014-12-10 | 天津雷鸣科技有限公司 | Ferrous waste acid Function Solution Handling Device Used |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108911109A (en) | 2018-11-30 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231201 Address after: 314300 Daqiao new area, Xitangqiao Street Development Zone, Haiyan County, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Wilson New Material Co.,Ltd. Address before: 314300 Zhengjiaduo Village, Haiyan County Bridge New Area, Jiaxing City, Zhejiang Province Applicant before: Jiaxing Jingyuan recycling Environmental Protection Technology Co.,Ltd. |
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